Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/s390/net/Kconfig b/drivers/s390/net/Kconfig
new file mode 100644
index 0000000..a7efc39
--- /dev/null
+++ b/drivers/s390/net/Kconfig
@@ -0,0 +1,108 @@
+menu "S/390 network device drivers"
+ depends on NETDEVICES && ARCH_S390
+
+config LCS
+ tristate "Lan Channel Station Interface"
+ depends on NETDEVICES && (NET_ETHERNET || TR || FDDI)
+ help
+ Select this option if you want to use LCS networking on IBM S/390
+ or zSeries. This device driver supports Token Ring (IEEE 802.5),
+ FDDI (IEEE 802.7) and Ethernet.
+ This option is also available as a module which will be
+ called lcs.ko. If you do not know what it is, it's safe to say "Y".
+
+config CTC
+ tristate "CTC device support"
+ depends on NETDEVICES
+ help
+ Select this option if you want to use channel-to-channel networking
+ on IBM S/390 or zSeries. This device driver supports real CTC
+ coupling using ESCON. It also supports virtual CTCs when running
+ under VM. It will use the channel device configuration if this is
+ available. This option is also available as a module which will be
+ called ctc.ko. If you do not know what it is, it's safe to say "Y".
+
+config IUCV
+ tristate "IUCV support (VM only)"
+ help
+ Select this option if you want to use inter-user communication
+ under VM or VIF. If unsure, say "Y" to enable a fast communication
+ link between VM guests. At boot time the user ID of the guest needs
+ to be passed to the kernel. Note that both kernels need to be
+ compiled with this option and both need to be booted with the user ID
+ of the other VM guest.
+
+config NETIUCV
+ tristate "IUCV network device support (VM only)"
+ depends on IUCV && NETDEVICES
+ help
+ Select this option if you want to use inter-user communication
+ vehicle networking under VM or VIF. It enables a fast communication
+ link between VM guests. Using ifconfig a point-to-point connection
+ can be established to the Linux for zSeries and S7390 system
+ running on the other VM guest. This option is also available
+ as a module which will be called netiucv.ko. If unsure, say "Y".
+
+config SMSGIUCV
+ tristate "IUCV special message support (VM only)"
+ depends on IUCV
+ help
+ Select this option if you want to be able to receive SMSG messages
+ from other VM guest systems.
+
+config CLAW
+ tristate "CLAW device support"
+ depends on NETDEVICES
+ help
+ This driver supports channel attached CLAW devices.
+ CLAW is Common Link Access for Workstation. Common devices
+ that use CLAW are RS/6000s, Cisco Routers (CIP) and 3172 devices.
+ To compile as a module choose M here: The module will be called
+ claw.ko to compile into the kernel choose Y
+
+config QETH
+ tristate "Gigabit Ethernet device support"
+ depends on NETDEVICES && IP_MULTICAST && QDIO
+ help
+ This driver supports the IBM S/390 and zSeries OSA Express adapters
+ in QDIO mode (all media types), HiperSockets interfaces and VM GuestLAN
+ interfaces in QDIO and HIPER mode.
+
+ For details please refer to the documentation provided by IBM at
+ <http://www10.software.ibm.com/developerworks/opensource/linux390>
+
+ To compile this driver as a module, choose M here: the
+ module will be called qeth.ko.
+
+
+comment "Gigabit Ethernet default settings"
+ depends on QETH
+
+config QETH_IPV6
+ bool "IPv6 support for gigabit ethernet"
+ depends on (QETH = IPV6) || (QETH && IPV6 = 'y')
+ help
+ If CONFIG_QETH is switched on, this option will include IPv6
+ support in the qeth device driver.
+
+config QETH_VLAN
+ bool "VLAN support for gigabit ethernet"
+ depends on (QETH = VLAN_8021Q) || (QETH && VLAN_8021Q = 'y')
+ help
+ If CONFIG_QETH is switched on, this option will include IEEE
+ 802.1q VLAN support in the qeth device driver.
+
+config QETH_PERF_STATS
+ bool "Performance statistics in /proc"
+ depends on QETH
+ help
+ When switched on, this option will add a file in the proc-fs
+ (/proc/qeth_perf_stats) containing performance statistics. It
+ may slightly impact performance, so this is only recommended for
+ internal tuning of the device driver.
+
+config CCWGROUP
+ tristate
+ default (LCS || CTC || QETH)
+
+endmenu
diff --git a/drivers/s390/net/Makefile b/drivers/s390/net/Makefile
new file mode 100644
index 0000000..7cabb80
--- /dev/null
+++ b/drivers/s390/net/Makefile
@@ -0,0 +1,14 @@
+#
+# S/390 network devices
+#
+
+ctc-objs := ctcmain.o ctctty.o ctcdbug.o
+
+obj-$(CONFIG_IUCV) += iucv.o
+obj-$(CONFIG_NETIUCV) += netiucv.o fsm.o
+obj-$(CONFIG_SMSGIUCV) += smsgiucv.o
+obj-$(CONFIG_CTC) += ctc.o fsm.o cu3088.o
+obj-$(CONFIG_LCS) += lcs.o cu3088.o
+qeth-y := qeth_main.o qeth_mpc.o qeth_sys.o qeth_eddp.o qeth_tso.o
+qeth-$(CONFIG_PROC_FS) += qeth_proc.o
+obj-$(CONFIG_QETH) += qeth.o
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
new file mode 100644
index 0000000..06804d3
--- /dev/null
+++ b/drivers/s390/net/claw.c
@@ -0,0 +1,4447 @@
+/*
+ * drivers/s390/net/claw.c
+ * ESCON CLAW network driver
+ *
+ * $Revision: 1.35 $ $Date: 2005/03/24 12:25:38 $
+ *
+ * Linux fo zSeries version
+ * Copyright (C) 2002,2005 IBM Corporation
+ * Author(s) Original code written by:
+ * Kazuo Iimura (iimura@jp.ibm.com)
+ * Rewritten by
+ * Andy Richter (richtera@us.ibm.com)
+ * Marc Price (mwprice@us.ibm.com)
+ *
+ * sysfs parms:
+ * group x.x.rrrr,x.x.wwww
+ * read_buffer nnnnnnn
+ * write_buffer nnnnnn
+ * host_name aaaaaaaa
+ * adapter_name aaaaaaaa
+ * api_type aaaaaaaa
+ *
+ * eg.
+ * group 0.0.0200 0.0.0201
+ * read_buffer 25
+ * write_buffer 20
+ * host_name LINUX390
+ * adapter_name RS6K
+ * api_type TCPIP
+ *
+ * where
+ *
+ * The device id is decided by the order entries
+ * are added to the group the first is claw0 the second claw1
+ * up to CLAW_MAX_DEV
+ *
+ * rrrr - the first of 2 consecutive device addresses used for the
+ * CLAW protocol.
+ * The specified address is always used as the input (Read)
+ * channel and the next address is used as the output channel.
+ *
+ * wwww - the second of 2 consecutive device addresses used for
+ * the CLAW protocol.
+ * The specified address is always used as the output
+ * channel and the previous address is used as the input channel.
+ *
+ * read_buffer - specifies number of input buffers to allocate.
+ * write_buffer - specifies number of output buffers to allocate.
+ * host_name - host name
+ * adaptor_name - adaptor name
+ * api_type - API type TCPIP or API will be sent and expected
+ * as ws_name
+ *
+ * Note the following requirements:
+ * 1) host_name must match the configured adapter_name on the remote side
+ * 2) adaptor_name must match the configured host name on the remote side
+ *
+ * Change History
+ * 1.00 Initial release shipped
+ * 1.10 Changes for Buffer allocation
+ * 1.15 Changed for 2.6 Kernel No longer compiles on 2.4 or lower
+ * 1.25 Added Packing support
+ */
+#include <asm/bitops.h>
+#include <asm/ccwdev.h>
+#include <asm/ccwgroup.h>
+#include <asm/debug.h>
+#include <asm/idals.h>
+#include <asm/io.h>
+
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/if_arp.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/tcp.h>
+#include <linux/timer.h>
+#include <linux/types.h>
+#include <linux/version.h>
+
+#include "cu3088.h"
+#include "claw.h"
+
+MODULE_AUTHOR("Andy Richter <richtera@us.ibm.com>");
+MODULE_DESCRIPTION("Linux for zSeries CLAW Driver\n" \
+ "Copyright 2000,2005 IBM Corporation\n");
+MODULE_LICENSE("GPL");
+
+/* Debugging is based on DEBUGMSG, IOTRACE, or FUNCTRACE options:
+ DEBUGMSG - Enables output of various debug messages in the code
+ IOTRACE - Enables output of CCW and other IO related traces
+ FUNCTRACE - Enables output of function entry/exit trace
+ Define any combination of above options to enable tracing
+
+ CLAW also uses the s390dbf file system see claw_trace and claw_setup
+*/
+
+/* following enables tracing */
+//#define DEBUGMSG
+//#define IOTRACE
+//#define FUNCTRACE
+
+#ifdef DEBUGMSG
+#define DEBUG
+#endif
+
+#ifdef IOTRACE
+#define DEBUG
+#endif
+
+#ifdef FUNCTRACE
+#define DEBUG
+#endif
+
+ char debug_buffer[255];
+/**
+ * Debug Facility Stuff
+ */
+static debug_info_t *claw_dbf_setup;
+static debug_info_t *claw_dbf_trace;
+
+/**
+ * CLAW Debug Facility functions
+ */
+static void
+claw_unregister_debug_facility(void)
+{
+ if (claw_dbf_setup)
+ debug_unregister(claw_dbf_setup);
+ if (claw_dbf_trace)
+ debug_unregister(claw_dbf_trace);
+}
+
+static int
+claw_register_debug_facility(void)
+{
+ claw_dbf_setup = debug_register("claw_setup", 1, 1, 8);
+ claw_dbf_trace = debug_register("claw_trace", 1, 2, 8);
+ if (claw_dbf_setup == NULL || claw_dbf_trace == NULL) {
+ printk(KERN_WARNING "Not enough memory for debug facility.\n");
+ claw_unregister_debug_facility();
+ return -ENOMEM;
+ }
+ debug_register_view(claw_dbf_setup, &debug_hex_ascii_view);
+ debug_set_level(claw_dbf_setup, 2);
+ debug_register_view(claw_dbf_trace, &debug_hex_ascii_view);
+ debug_set_level(claw_dbf_trace, 2);
+ return 0;
+}
+
+static inline void
+claw_set_busy(struct net_device *dev)
+{
+ ((struct claw_privbk *) dev->priv)->tbusy=1;
+ eieio();
+}
+
+static inline void
+claw_clear_busy(struct net_device *dev)
+{
+ clear_bit(0, &(((struct claw_privbk *) dev->priv)->tbusy));
+ netif_wake_queue(dev);
+ eieio();
+}
+
+static inline int
+claw_check_busy(struct net_device *dev)
+{
+ eieio();
+ return ((struct claw_privbk *) dev->priv)->tbusy;
+}
+
+static inline void
+claw_setbit_busy(int nr,struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ set_bit(nr, (void *)&(((struct claw_privbk *)dev->priv)->tbusy));
+}
+
+static inline void
+claw_clearbit_busy(int nr,struct net_device *dev)
+{
+ clear_bit(nr,(void *)&(((struct claw_privbk *)dev->priv)->tbusy));
+ netif_wake_queue(dev);
+}
+
+static inline int
+claw_test_and_setbit_busy(int nr,struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ return test_and_set_bit(nr,
+ (void *)&(((struct claw_privbk *) dev->priv)->tbusy));
+}
+
+
+/* Functions for the DEV methods */
+
+static int claw_probe(struct ccwgroup_device *cgdev);
+static void claw_remove_device(struct ccwgroup_device *cgdev);
+static void claw_purge_skb_queue(struct sk_buff_head *q);
+static int claw_new_device(struct ccwgroup_device *cgdev);
+static int claw_shutdown_device(struct ccwgroup_device *cgdev);
+static int claw_tx(struct sk_buff *skb, struct net_device *dev);
+static int claw_change_mtu( struct net_device *dev, int new_mtu);
+static int claw_open(struct net_device *dev);
+static void claw_irq_handler(struct ccw_device *cdev,
+ unsigned long intparm, struct irb *irb);
+static void claw_irq_tasklet ( unsigned long data );
+static int claw_release(struct net_device *dev);
+static void claw_write_retry ( struct chbk * p_ch );
+static void claw_write_next ( struct chbk * p_ch );
+static void claw_timer ( struct chbk * p_ch );
+
+/* Functions */
+static int add_claw_reads(struct net_device *dev,
+ struct ccwbk* p_first, struct ccwbk* p_last);
+static void inline ccw_check_return_code (struct ccw_device *cdev,
+ int return_code);
+static void inline ccw_check_unit_check (struct chbk * p_ch,
+ unsigned char sense );
+static int find_link(struct net_device *dev, char *host_name, char *ws_name );
+static int claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid);
+static int init_ccw_bk(struct net_device *dev);
+static void probe_error( struct ccwgroup_device *cgdev);
+static struct net_device_stats *claw_stats(struct net_device *dev);
+static int inline pages_to_order_of_mag(int num_of_pages);
+static struct sk_buff *claw_pack_skb(struct claw_privbk *privptr);
+#ifdef DEBUG
+static void dumpit (char *buf, int len);
+#endif
+/* sysfs Functions */
+static ssize_t claw_hname_show(struct device *dev, char *buf);
+static ssize_t claw_hname_write(struct device *dev,
+ const char *buf, size_t count);
+static ssize_t claw_adname_show(struct device *dev, char *buf);
+static ssize_t claw_adname_write(struct device *dev,
+ const char *buf, size_t count);
+static ssize_t claw_apname_show(struct device *dev, char *buf);
+static ssize_t claw_apname_write(struct device *dev,
+ const char *buf, size_t count);
+static ssize_t claw_wbuff_show(struct device *dev, char *buf);
+static ssize_t claw_wbuff_write(struct device *dev,
+ const char *buf, size_t count);
+static ssize_t claw_rbuff_show(struct device *dev, char *buf);
+static ssize_t claw_rbuff_write(struct device *dev,
+ const char *buf, size_t count);
+static int claw_add_files(struct device *dev);
+static void claw_remove_files(struct device *dev);
+
+/* Functions for System Validate */
+static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw);
+static int claw_send_control(struct net_device *dev, __u8 type, __u8 link,
+ __u8 correlator, __u8 rc , char *local_name, char *remote_name);
+static int claw_snd_conn_req(struct net_device *dev, __u8 link);
+static int claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl);
+static int claw_snd_sys_validate_rsp(struct net_device *dev,
+ struct clawctl * p_ctl, __u32 return_code);
+static int claw_strt_conn_req(struct net_device *dev );
+static void claw_strt_read ( struct net_device *dev, int lock );
+static void claw_strt_out_IO( struct net_device *dev );
+static void claw_free_wrt_buf( struct net_device *dev );
+
+/* Functions for unpack reads */
+static void unpack_read (struct net_device *dev );
+
+/* ccwgroup table */
+
+static struct ccwgroup_driver claw_group_driver = {
+ .owner = THIS_MODULE,
+ .name = "claw",
+ .max_slaves = 2,
+ .driver_id = 0xC3D3C1E6,
+ .probe = claw_probe,
+ .remove = claw_remove_device,
+ .set_online = claw_new_device,
+ .set_offline = claw_shutdown_device,
+};
+
+/*
+*
+* Key functions
+*/
+
+/*----------------------------------------------------------------*
+ * claw_probe *
+ * this function is called for each CLAW device. *
+ *----------------------------------------------------------------*/
+static int
+claw_probe(struct ccwgroup_device *cgdev)
+{
+ int rc;
+ struct claw_privbk *privptr=NULL;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s Enter\n",__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"probe");
+ if (!get_device(&cgdev->dev))
+ return -ENODEV;
+#ifdef DEBUGMSG
+ printk(KERN_INFO "claw: variable cgdev =\n");
+ dumpit((char *)cgdev, sizeof(struct ccwgroup_device));
+#endif
+ privptr = kmalloc(sizeof(struct claw_privbk), GFP_KERNEL);
+ if (privptr == NULL) {
+ probe_error(cgdev);
+ put_device(&cgdev->dev);
+ printk(KERN_WARNING "Out of memory %s %s Exit Line %d \n",
+ cgdev->cdev[0]->dev.bus_id,__FUNCTION__,__LINE__);
+ CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM);
+ return -ENOMEM;
+ }
+ memset(privptr,0x00,sizeof(struct claw_privbk));
+ privptr->p_mtc_envelope= kmalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL);
+ privptr->p_env = kmalloc(sizeof(struct claw_env), GFP_KERNEL);
+ if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) {
+ probe_error(cgdev);
+ put_device(&cgdev->dev);
+ printk(KERN_WARNING "Out of memory %s %s Exit Line %d \n",
+ cgdev->cdev[0]->dev.bus_id,__FUNCTION__,__LINE__);
+ CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM);
+ return -ENOMEM;
+ }
+ memset(privptr->p_mtc_envelope, 0x00, MAX_ENVELOPE_SIZE);
+ memset(privptr->p_env, 0x00, sizeof(struct claw_env));
+ memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8);
+ memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8);
+ memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8);
+ privptr->p_env->packing = 0;
+ privptr->p_env->write_buffers = 5;
+ privptr->p_env->read_buffers = 5;
+ privptr->p_env->read_size = CLAW_FRAME_SIZE;
+ privptr->p_env->write_size = CLAW_FRAME_SIZE;
+ rc = claw_add_files(&cgdev->dev);
+ if (rc) {
+ probe_error(cgdev);
+ put_device(&cgdev->dev);
+ printk(KERN_WARNING "add_files failed %s %s Exit Line %d \n",
+ cgdev->cdev[0]->dev.bus_id,__FUNCTION__,__LINE__);
+ CLAW_DBF_TEXT_(2,setup,"probex%d",rc);
+ return rc;
+ }
+ printk(KERN_INFO "claw: sysfs files added for %s\n",cgdev->cdev[0]->dev.bus_id);
+ privptr->p_env->p_priv = privptr;
+ cgdev->cdev[0]->handler = claw_irq_handler;
+ cgdev->cdev[1]->handler = claw_irq_handler;
+ cgdev->dev.driver_data = privptr;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "claw:%s exit on line %d, "
+ "rc = 0\n",__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"prbext 0");
+
+ return 0;
+} /* end of claw_probe */
+
+/*-------------------------------------------------------------------*
+ * claw_tx *
+ *-------------------------------------------------------------------*/
+
+static int
+claw_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ int rc;
+ struct claw_privbk *privptr=dev->priv;
+ unsigned long saveflags;
+ struct chbk *p_ch;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"claw_tx");
+ p_ch=&privptr->channel[WRITE];
+ if (skb == NULL) {
+ printk(KERN_WARNING "%s: null pointer passed as sk_buffer\n",
+ dev->name);
+ privptr->stats.tx_dropped++;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() exit on line %d, rc = EIO\n",
+ dev->name,__FUNCTION__, __LINE__);
+#endif
+ CLAW_DBF_TEXT_(2,trace,"clawtx%d",-EIO);
+ return -EIO;
+ }
+
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: variable sk_buff=\n",dev->name);
+ dumpit((char *) skb, sizeof(struct sk_buff));
+ printk(KERN_INFO "%s: variable dev=\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+#endif
+ spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags);
+ rc=claw_hw_tx( skb, dev, 1 );
+ spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s exit on line %d, rc = %d\n",
+ dev->name, __FUNCTION__, __LINE__, rc);
+#endif
+ CLAW_DBF_TEXT_(4,trace,"clawtx%d",rc);
+ return rc;
+} /* end of claw_tx */
+
+/*------------------------------------------------------------------*
+ * pack the collect queue into an skb and return it *
+ * If not packing just return the top skb from the queue *
+ *------------------------------------------------------------------*/
+
+static struct sk_buff *
+claw_pack_skb(struct claw_privbk *privptr)
+{
+ struct sk_buff *new_skb,*held_skb;
+ struct chbk *p_ch = &privptr->channel[WRITE];
+ struct claw_env *p_env = privptr->p_env;
+ int pkt_cnt,pk_ind,so_far;
+
+ new_skb = NULL; /* assume no dice */
+ pkt_cnt = 0;
+ CLAW_DBF_TEXT(4,trace,"PackSKBe");
+ if (skb_queue_len(&p_ch->collect_queue) > 0) {
+ /* some data */
+ held_skb = skb_dequeue(&p_ch->collect_queue);
+ if (p_env->packing != DO_PACKED)
+ return held_skb;
+ if (held_skb)
+ atomic_dec(&held_skb->users);
+ else
+ return NULL;
+ /* get a new SKB we will pack at least one */
+ new_skb = dev_alloc_skb(p_env->write_size);
+ if (new_skb == NULL) {
+ atomic_inc(&held_skb->users);
+ skb_queue_head(&p_ch->collect_queue,held_skb);
+ return NULL;
+ }
+ /* we have packed packet and a place to put it */
+ pk_ind = 1;
+ so_far = 0;
+ new_skb->cb[1] = 'P'; /* every skb on queue has pack header */
+ while ((pk_ind) && (held_skb != NULL)) {
+ if (held_skb->len+so_far <= p_env->write_size-8) {
+ memcpy(skb_put(new_skb,held_skb->len),
+ held_skb->data,held_skb->len);
+ privptr->stats.tx_packets++;
+ so_far += held_skb->len;
+ pkt_cnt++;
+ dev_kfree_skb_irq(held_skb);
+ held_skb = skb_dequeue(&p_ch->collect_queue);
+ if (held_skb)
+ atomic_dec(&held_skb->users);
+ } else {
+ pk_ind = 0;
+ atomic_inc(&held_skb->users);
+ skb_queue_head(&p_ch->collect_queue,held_skb);
+ }
+ }
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: %s() Packed %d len %d\n",
+ p_env->ndev->name,
+ __FUNCTION__,pkt_cnt,new_skb->len);
+#endif
+ }
+ CLAW_DBF_TEXT(4,trace,"PackSKBx");
+ return new_skb;
+}
+
+/*-------------------------------------------------------------------*
+ * claw_change_mtu *
+ * *
+ *-------------------------------------------------------------------*/
+
+static int
+claw_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct claw_privbk *privptr=dev->priv;
+ int buff_size;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+#endif
+#ifdef DEBUGMSG
+ printk(KERN_INFO "variable dev =\n");
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "variable new_mtu = %d\n", new_mtu);
+#endif
+ CLAW_DBF_TEXT(4,trace,"setmtu");
+ buff_size = privptr->p_env->write_size;
+ if ((new_mtu < 60) || (new_mtu > buff_size)) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc=EINVAL\n",
+ dev->name,
+ __FUNCTION__, __LINE__);
+#endif
+ return -EINVAL;
+ }
+ dev->mtu = new_mtu;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",dev->name,
+ __FUNCTION__, __LINE__);
+#endif
+ return 0;
+} /* end of claw_change_mtu */
+
+
+/*-------------------------------------------------------------------*
+ * claw_open *
+ * *
+ *-------------------------------------------------------------------*/
+static int
+claw_open(struct net_device *dev)
+{
+
+ int rc;
+ int i;
+ unsigned long saveflags=0;
+ unsigned long parm;
+ struct claw_privbk *privptr;
+ DECLARE_WAITQUEUE(wait, current);
+ struct timer_list timer;
+ struct ccwbk *p_buf;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"open");
+ if (!dev | (dev->name[0] == 0x00)) {
+ CLAW_DBF_TEXT(2,trace,"BadDev");
+ printk(KERN_WARNING "claw: Bad device at open failing \n");
+ return -ENODEV;
+ }
+ privptr = (struct claw_privbk *)dev->priv;
+ /* allocate and initialize CCW blocks */
+ if (privptr->buffs_alloc == 0) {
+ rc=init_ccw_bk(dev);
+ if (rc) {
+ printk(KERN_INFO "%s:%s Exit on line %d, rc=ENOMEM\n",
+ dev->name,
+ __FUNCTION__, __LINE__);
+ CLAW_DBF_TEXT(2,trace,"openmem");
+ return -ENOMEM;
+ }
+ }
+ privptr->system_validate_comp=0;
+ privptr->release_pend=0;
+ if(strncmp(privptr->p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) {
+ privptr->p_env->read_size=DEF_PACK_BUFSIZE;
+ privptr->p_env->write_size=DEF_PACK_BUFSIZE;
+ privptr->p_env->packing=PACKING_ASK;
+ } else {
+ privptr->p_env->packing=0;
+ privptr->p_env->read_size=CLAW_FRAME_SIZE;
+ privptr->p_env->write_size=CLAW_FRAME_SIZE;
+ }
+ claw_set_busy(dev);
+ tasklet_init(&privptr->channel[READ].tasklet, claw_irq_tasklet,
+ (unsigned long) &privptr->channel[READ]);
+ for ( i = 0; i < 2; i++) {
+ CLAW_DBF_TEXT_(2,trace,"opn_ch%d",i);
+ init_waitqueue_head(&privptr->channel[i].wait);
+ /* skb_queue_head_init(&p_ch->io_queue); */
+ if (i == WRITE)
+ skb_queue_head_init(
+ &privptr->channel[WRITE].collect_queue);
+ privptr->channel[i].flag_a = 0;
+ privptr->channel[i].IO_active = 0;
+ privptr->channel[i].flag &= ~CLAW_TIMER;
+ init_timer(&timer);
+ timer.function = (void *)claw_timer;
+ timer.data = (unsigned long)(&privptr->channel[i]);
+ timer.expires = jiffies + 15*HZ;
+ add_timer(&timer);
+ spin_lock_irqsave(get_ccwdev_lock(
+ privptr->channel[i].cdev), saveflags);
+ parm = (unsigned long) &privptr->channel[i];
+ privptr->channel[i].claw_state = CLAW_START_HALT_IO;
+ rc = 0;
+ add_wait_queue(&privptr->channel[i].wait, &wait);
+ rc = ccw_device_halt(
+ (struct ccw_device *)privptr->channel[i].cdev,parm);
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irqrestore(
+ get_ccwdev_lock(privptr->channel[i].cdev), saveflags);
+ schedule();
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&privptr->channel[i].wait, &wait);
+ if(rc != 0)
+ ccw_check_return_code(privptr->channel[i].cdev, rc);
+ if((privptr->channel[i].flag & CLAW_TIMER) == 0x00)
+ del_timer(&timer);
+ }
+ if ((((privptr->channel[READ].last_dstat |
+ privptr->channel[WRITE].last_dstat) &
+ ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) ||
+ (((privptr->channel[READ].flag |
+ privptr->channel[WRITE].flag) & CLAW_TIMER) != 0x00)) {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: channel problems during open - read:"
+ " %02x - write: %02x\n",
+ dev->name,
+ privptr->channel[READ].last_dstat,
+ privptr->channel[WRITE].last_dstat);
+#endif
+ printk(KERN_INFO "%s: remote side is not ready\n", dev->name);
+ CLAW_DBF_TEXT(2,trace,"notrdy");
+
+ for ( i = 0; i < 2; i++) {
+ spin_lock_irqsave(
+ get_ccwdev_lock(privptr->channel[i].cdev),
+ saveflags);
+ parm = (unsigned long) &privptr->channel[i];
+ privptr->channel[i].claw_state = CLAW_STOP;
+ rc = ccw_device_halt(
+ (struct ccw_device *)&privptr->channel[i].cdev,
+ parm);
+ spin_unlock_irqrestore(
+ get_ccwdev_lock(privptr->channel[i].cdev),
+ saveflags);
+ if (rc != 0) {
+ ccw_check_return_code(
+ privptr->channel[i].cdev, rc);
+ }
+ }
+ free_pages((unsigned long)privptr->p_buff_ccw,
+ (int)pages_to_order_of_mag(privptr->p_buff_ccw_num));
+ if (privptr->p_env->read_size < PAGE_SIZE) {
+ free_pages((unsigned long)privptr->p_buff_read,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_read_num));
+ }
+ else {
+ p_buf=privptr->p_read_active_first;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perread ));
+ p_buf=p_buf->next;
+ }
+ }
+ if (privptr->p_env->write_size < PAGE_SIZE ) {
+ free_pages((unsigned long)privptr->p_buff_write,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_write_num));
+ }
+ else {
+ p_buf=privptr->p_write_active_first;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perwrite ));
+ p_buf=p_buf->next;
+ }
+ }
+ privptr->buffs_alloc = 0;
+ privptr->channel[READ].flag= 0x00;
+ privptr->channel[WRITE].flag = 0x00;
+ privptr->p_buff_ccw=NULL;
+ privptr->p_buff_read=NULL;
+ privptr->p_buff_write=NULL;
+ claw_clear_busy(dev);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc=EIO\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(2,trace,"open EIO");
+ return -EIO;
+ }
+
+ /* Send SystemValidate command */
+
+ claw_clear_busy(dev);
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc=0\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"openok");
+ return 0;
+} /* end of claw_open */
+
+/*-------------------------------------------------------------------*
+* *
+* claw_irq_handler *
+* *
+*--------------------------------------------------------------------*/
+static void
+claw_irq_handler(struct ccw_device *cdev,
+ unsigned long intparm, struct irb *irb)
+{
+ struct chbk *p_ch = NULL;
+ struct claw_privbk *privptr = NULL;
+ struct net_device *dev = NULL;
+ struct claw_env *p_env;
+ struct chbk *p_ch_r=NULL;
+
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s enter \n",__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"clawirq");
+ /* Bypass all 'unsolicited interrupts' */
+ if (!cdev->dev.driver_data) {
+ printk(KERN_WARNING "claw: unsolicited interrupt for device:"
+ "%s received c-%02x d-%02x\n",
+ cdev->dev.bus_id,irb->scsw.cstat, irb->scsw.dstat);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "claw: %s() "
+ "exit on line %d\n",__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(2,trace,"badirq");
+ return;
+ }
+ privptr = (struct claw_privbk *)cdev->dev.driver_data;
+
+ /* Try to extract channel from driver data. */
+ if (privptr->channel[READ].cdev == cdev)
+ p_ch = &privptr->channel[READ];
+ else if (privptr->channel[WRITE].cdev == cdev)
+ p_ch = &privptr->channel[WRITE];
+ else {
+ printk(KERN_WARNING "claw: Can't determine channel for "
+ "interrupt, device %s\n", cdev->dev.bus_id);
+ CLAW_DBF_TEXT(2,trace,"badchan");
+ return;
+ }
+ CLAW_DBF_TEXT_(4,trace,"IRQCH=%d",p_ch->flag);
+
+ dev = (struct net_device *) (p_ch->ndev);
+ p_env=privptr->p_env;
+
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: interrupt for device: %04x "
+ "received c-%02x d-%02x state-%02x\n",
+ dev->name, p_ch->devno, irb->scsw.cstat,
+ irb->scsw.dstat, p_ch->claw_state);
+#endif
+
+ /* Copy interruption response block. */
+ memcpy(p_ch->irb, irb, sizeof(struct irb));
+
+ /* Check for good subchannel return code, otherwise error message */
+ if (irb->scsw.cstat && !(irb->scsw.cstat & SCHN_STAT_PCI)) {
+ printk(KERN_INFO "%s: subchannel check for device: %04x -"
+ " Sch Stat %02x Dev Stat %02x CPA - %04x\n",
+ dev->name, p_ch->devno,
+ irb->scsw.cstat, irb->scsw.dstat,irb->scsw.cpa);
+#ifdef IOTRACE
+ dumpit((char *)irb,sizeof(struct irb));
+ dumpit((char *)(unsigned long)irb->scsw.cpa,
+ sizeof(struct ccw1));
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(2,trace,"chanchk");
+ /* return; */
+ }
+
+ /* Check the reason-code of a unit check */
+ if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+ ccw_check_unit_check(p_ch, irb->ecw[0]);
+ }
+
+ /* State machine to bring the connection up, down and to restart */
+ p_ch->last_dstat = irb->scsw.dstat;
+
+ switch (p_ch->claw_state) {
+ case CLAW_STOP:/* HALT_IO by claw_release (halt sequence) */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: CLAW_STOP enter\n", dev->name);
+#endif
+ if (!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
+ (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
+ (p_ch->irb->scsw.stctl ==
+ (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return;
+ }
+ wake_up(&p_ch->wait); /* wake up claw_release */
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: CLAW_STOP exit\n", dev->name);
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"stop");
+ return;
+
+ case CLAW_START_HALT_IO: /* HALT_IO issued by claw_open */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: process CLAW_STAT_HALT_IO\n",
+ dev->name);
+#endif
+ if (!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
+ (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
+ (p_ch->irb->scsw.stctl ==
+ (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"haltio");
+ return;
+ }
+ if (p_ch->flag == CLAW_READ) {
+ p_ch->claw_state = CLAW_START_READ;
+ wake_up(&p_ch->wait); /* wake claw_open (READ)*/
+ }
+ else
+ if (p_ch->flag == CLAW_WRITE) {
+ p_ch->claw_state = CLAW_START_WRITE;
+ /* send SYSTEM_VALIDATE */
+ claw_strt_read(dev, LOCK_NO);
+ claw_send_control(dev,
+ SYSTEM_VALIDATE_REQUEST,
+ 0, 0, 0,
+ p_env->host_name,
+ p_env->adapter_name );
+ } else {
+ printk(KERN_WARNING "claw: unsolicited "
+ "interrupt for device:"
+ "%s received c-%02x d-%02x\n",
+ cdev->dev.bus_id,
+ irb->scsw.cstat,
+ irb->scsw.dstat);
+ return;
+ }
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: process CLAW_STAT_HALT_IO exit\n",
+ dev->name);
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"haltio");
+ return;
+ case CLAW_START_READ:
+ CLAW_DBF_TEXT(4,trace,"ReadIRQ");
+ if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+ clear_bit(0, (void *)&p_ch->IO_active);
+ if ((p_ch->irb->ecw[0] & 0x41) == 0x41 ||
+ (p_ch->irb->ecw[0] & 0x40) == 0x40 ||
+ (p_ch->irb->ecw[0]) == 0)
+ {
+ privptr->stats.rx_errors++;
+ printk(KERN_INFO "%s: Restart is "
+ "required after remote "
+ "side recovers \n",
+ dev->name);
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"notrdy");
+ return;
+ }
+ if ((p_ch->irb->scsw.cstat & SCHN_STAT_PCI) &&
+ (p_ch->irb->scsw.dstat==0)) {
+ if (test_and_set_bit(CLAW_BH_ACTIVE,
+ (void *)&p_ch->flag_a) == 0) {
+ tasklet_schedule(&p_ch->tasklet);
+ }
+ else {
+ CLAW_DBF_TEXT(4,trace,"PCINoBH");
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"PCI_read");
+ return;
+ }
+ if(!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
+ (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
+ (p_ch->irb->scsw.stctl ==
+ (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"SPend_rd");
+ return;
+ }
+ clear_bit(0, (void *)&p_ch->IO_active);
+ claw_clearbit_busy(TB_RETRY,dev);
+ if (test_and_set_bit(CLAW_BH_ACTIVE,
+ (void *)&p_ch->flag_a) == 0) {
+ tasklet_schedule(&p_ch->tasklet);
+ }
+ else {
+ CLAW_DBF_TEXT(4,trace,"RdBHAct");
+ }
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: process CLAW_START_READ exit\n",
+ dev->name);
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"RdIRQXit");
+ return;
+ case CLAW_START_WRITE:
+ if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+ printk(KERN_INFO "%s: Unit Check Occured in "
+ "write channel\n",dev->name);
+ clear_bit(0, (void *)&p_ch->IO_active);
+ if (p_ch->irb->ecw[0] & 0x80 ) {
+ printk(KERN_INFO "%s: Resetting Event "
+ "occurred:\n",dev->name);
+ init_timer(&p_ch->timer);
+ p_ch->timer.function =
+ (void *)claw_write_retry;
+ p_ch->timer.data = (unsigned long)p_ch;
+ p_ch->timer.expires = jiffies + 10*HZ;
+ add_timer(&p_ch->timer);
+ printk(KERN_INFO "%s: write connection "
+ "restarting\n",dev->name);
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"rstrtwrt");
+ return;
+ }
+ if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) {
+ clear_bit(0, (void *)&p_ch->IO_active);
+ printk(KERN_INFO "%s: Unit Exception "
+ "Occured in write channel\n",
+ dev->name);
+ }
+ if(!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
+ (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
+ (p_ch->irb->scsw.stctl ==
+ (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"writeUE");
+ return;
+ }
+ clear_bit(0, (void *)&p_ch->IO_active);
+ if (claw_test_and_setbit_busy(TB_TX,dev)==0) {
+ claw_write_next(p_ch);
+ claw_clearbit_busy(TB_TX,dev);
+ claw_clear_busy(dev);
+ }
+ p_ch_r=(struct chbk *)&privptr->channel[READ];
+ if (test_and_set_bit(CLAW_BH_ACTIVE,
+ (void *)&p_ch_r->flag_a) == 0) {
+ tasklet_schedule(&p_ch_r->tasklet);
+ }
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: process CLAW_START_WRITE exit\n",
+ dev->name);
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"StWtExit");
+ return;
+ default:
+ printk(KERN_WARNING "%s: wrong selection code - irq "
+ "state=%d\n",dev->name,p_ch->claw_state);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(2,trace,"badIRQ");
+ return;
+ }
+
+} /* end of claw_irq_handler */
+
+
+/*-------------------------------------------------------------------*
+* claw_irq_tasklet *
+* *
+*--------------------------------------------------------------------*/
+static void
+claw_irq_tasklet ( unsigned long data )
+{
+ struct chbk * p_ch;
+ struct net_device *dev;
+ struct claw_privbk * privptr;
+
+ p_ch = (struct chbk *) data;
+ dev = (struct net_device *)p_ch->ndev;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+#endif
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable p_ch =\n",dev->name);
+ dumpit((char *) p_ch, sizeof(struct chbk));
+#endif
+ CLAW_DBF_TEXT(4,trace,"IRQtask");
+
+ privptr = (struct claw_privbk *) dev->priv;
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: bh routine - state-%02x\n" ,
+ dev->name, p_ch->claw_state);
+#endif
+
+ unpack_read(dev);
+ clear_bit(CLAW_BH_ACTIVE, (void *)&p_ch->flag_a);
+ CLAW_DBF_TEXT(4,trace,"TskletXt");
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return;
+} /* end of claw_irq_bh */
+
+/*-------------------------------------------------------------------*
+* claw_release *
+* *
+*--------------------------------------------------------------------*/
+static int
+claw_release(struct net_device *dev)
+{
+ int rc;
+ int i;
+ unsigned long saveflags;
+ unsigned long parm;
+ struct claw_privbk *privptr;
+ DECLARE_WAITQUEUE(wait, current);
+ struct ccwbk* p_this_ccw;
+ struct ccwbk* p_buf;
+
+ if (!dev)
+ return 0;
+ privptr = (struct claw_privbk *) dev->priv;
+ if (!privptr)
+ return 0;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"release");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "Priv Buffalloc %d\n",privptr->buffs_alloc);
+ printk(KERN_INFO "Priv p_buff_ccw = %p\n",&privptr->p_buff_ccw);
+#endif
+ privptr->release_pend=1;
+ claw_setbit_busy(TB_STOP,dev);
+ for ( i = 1; i >=0 ; i--) {
+ spin_lock_irqsave(
+ get_ccwdev_lock(privptr->channel[i].cdev), saveflags);
+ /* del_timer(&privptr->channel[READ].timer); */
+ privptr->channel[i].claw_state = CLAW_STOP;
+ privptr->channel[i].IO_active = 0;
+ parm = (unsigned long) &privptr->channel[i];
+ if (i == WRITE)
+ claw_purge_skb_queue(
+ &privptr->channel[WRITE].collect_queue);
+ rc = ccw_device_halt (privptr->channel[i].cdev, parm);
+ if (privptr->system_validate_comp==0x00) /* never opened? */
+ init_waitqueue_head(&privptr->channel[i].wait);
+ add_wait_queue(&privptr->channel[i].wait, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irqrestore(
+ get_ccwdev_lock(privptr->channel[i].cdev), saveflags);
+ schedule();
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&privptr->channel[i].wait, &wait);
+ if (rc != 0) {
+ ccw_check_return_code(privptr->channel[i].cdev, rc);
+ }
+ }
+ if (privptr->pk_skb != NULL) {
+ dev_kfree_skb(privptr->pk_skb);
+ privptr->pk_skb = NULL;
+ }
+ if(privptr->buffs_alloc != 1) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"none2fre");
+ return 0;
+ }
+ CLAW_DBF_TEXT(4,trace,"freebufs");
+ if (privptr->p_buff_ccw != NULL) {
+ free_pages((unsigned long)privptr->p_buff_ccw,
+ (int)pages_to_order_of_mag(privptr->p_buff_ccw_num));
+ }
+ CLAW_DBF_TEXT(4,trace,"freeread");
+ if (privptr->p_env->read_size < PAGE_SIZE) {
+ if (privptr->p_buff_read != NULL) {
+ free_pages((unsigned long)privptr->p_buff_read,
+ (int)pages_to_order_of_mag(privptr->p_buff_read_num));
+ }
+ }
+ else {
+ p_buf=privptr->p_read_active_first;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perread ));
+ p_buf=p_buf->next;
+ }
+ }
+ CLAW_DBF_TEXT(4,trace,"freewrit");
+ if (privptr->p_env->write_size < PAGE_SIZE ) {
+ free_pages((unsigned long)privptr->p_buff_write,
+ (int)pages_to_order_of_mag(privptr->p_buff_write_num));
+ }
+ else {
+ p_buf=privptr->p_write_active_first;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perwrite ));
+ p_buf=p_buf->next;
+ }
+ }
+ CLAW_DBF_TEXT(4,trace,"clearptr");
+ privptr->buffs_alloc = 0;
+ privptr->p_buff_ccw=NULL;
+ privptr->p_buff_read=NULL;
+ privptr->p_buff_write=NULL;
+ privptr->system_validate_comp=0;
+ privptr->release_pend=0;
+ /* Remove any writes that were pending and reset all reads */
+ p_this_ccw=privptr->p_read_active_first;
+ while (p_this_ccw!=NULL) {
+ p_this_ccw->header.length=0xffff;
+ p_this_ccw->header.opcode=0xff;
+ p_this_ccw->header.flag=0x00;
+ p_this_ccw=p_this_ccw->next;
+ }
+
+ while (privptr->p_write_active_first!=NULL) {
+ p_this_ccw=privptr->p_write_active_first;
+ p_this_ccw->header.flag=CLAW_PENDING;
+ privptr->p_write_active_first=p_this_ccw->next;
+ p_this_ccw->next=privptr->p_write_free_chain;
+ privptr->p_write_free_chain=p_this_ccw;
+ ++privptr->write_free_count;
+ }
+ privptr->p_write_active_last=NULL;
+ privptr->mtc_logical_link = -1;
+ privptr->mtc_skipping = 1;
+ privptr->mtc_offset=0;
+
+ if (((privptr->channel[READ].last_dstat |
+ privptr->channel[WRITE].last_dstat) &
+ ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) {
+ printk(KERN_WARNING "%s: channel problems during close - "
+ "read: %02x - write: %02x\n",
+ dev->name,
+ privptr->channel[READ].last_dstat,
+ privptr->channel[WRITE].last_dstat);
+ CLAW_DBF_TEXT(2,trace,"badclose");
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"rlsexit");
+ return 0;
+} /* end of claw_release */
+
+
+
+/*-------------------------------------------------------------------*
+* claw_write_retry *
+* *
+*--------------------------------------------------------------------*/
+
+static void
+claw_write_retry ( struct chbk *p_ch )
+{
+
+ struct net_device *dev=p_ch->ndev;
+
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+ printk(KERN_INFO "claw: variable p_ch =\n");
+ dumpit((char *) p_ch, sizeof(struct chbk));
+#endif
+ CLAW_DBF_TEXT(4,trace,"w_retry");
+ if (p_ch->claw_state == CLAW_STOP) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return;
+ }
+#ifdef DEBUGMSG
+ printk( KERN_INFO "%s:%s state-%02x\n" ,
+ dev->name,
+ __FUNCTION__,
+ p_ch->claw_state);
+#endif
+ claw_strt_out_IO( dev );
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"rtry_xit");
+ return;
+} /* end of claw_write_retry */
+
+
+/*-------------------------------------------------------------------*
+* claw_write_next *
+* *
+*--------------------------------------------------------------------*/
+
+static void
+claw_write_next ( struct chbk * p_ch )
+{
+
+ struct net_device *dev;
+ struct claw_privbk *privptr=NULL;
+ struct sk_buff *pk_skb;
+ int rc;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",p_ch->ndev->name,__FUNCTION__);
+ printk(KERN_INFO "%s: variable p_ch =\n",p_ch->ndev->name);
+ dumpit((char *) p_ch, sizeof(struct chbk));
+#endif
+ CLAW_DBF_TEXT(4,trace,"claw_wrt");
+ if (p_ch->claw_state == CLAW_STOP)
+ return;
+ dev = (struct net_device *) p_ch->ndev;
+ privptr = (struct claw_privbk *) dev->priv;
+ claw_free_wrt_buf( dev );
+ if ((privptr->write_free_count > 0) &&
+ (skb_queue_len(&p_ch->collect_queue) > 0)) {
+ pk_skb = claw_pack_skb(privptr);
+ while (pk_skb != NULL) {
+ rc = claw_hw_tx( pk_skb, dev,1);
+ if (privptr->write_free_count > 0) {
+ pk_skb = claw_pack_skb(privptr);
+ } else
+ pk_skb = NULL;
+ }
+ }
+ if (privptr->p_write_active_first!=NULL) {
+ claw_strt_out_IO(dev);
+ }
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return;
+} /* end of claw_write_next */
+
+/*-------------------------------------------------------------------*
+* *
+* claw_timer *
+*--------------------------------------------------------------------*/
+
+static void
+claw_timer ( struct chbk * p_ch )
+{
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Entry\n",p_ch->ndev->name,__FUNCTION__);
+ printk(KERN_INFO "%s: variable p_ch =\n",p_ch->ndev->name);
+ dumpit((char *) p_ch, sizeof(struct chbk));
+#endif
+ CLAW_DBF_TEXT(4,trace,"timer");
+ p_ch->flag |= CLAW_TIMER;
+ wake_up(&p_ch->wait);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ p_ch->ndev->name,__FUNCTION__,__LINE__);
+#endif
+ return;
+} /* end of claw_timer */
+
+
+/*
+*
+* functions
+*/
+
+
+/*-------------------------------------------------------------------*
+* *
+* pages_to_order_of_mag *
+* *
+* takes a number of pages from 1 to 512 and returns the *
+* log(num_pages)/log(2) get_free_pages() needs a base 2 order *
+* of magnitude get_free_pages() has an upper order of 9 *
+*--------------------------------------------------------------------*/
+
+static int inline
+pages_to_order_of_mag(int num_of_pages)
+{
+ int order_of_mag=1; /* assume 2 pages */
+ int nump=2;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s Enter pages = %d \n",__FUNCTION__,num_of_pages);
+#endif
+ CLAW_DBF_TEXT_(5,trace,"pages%d",num_of_pages);
+ if (num_of_pages == 1) {return 0; } /* magnitude of 0 = 1 page */
+ /* 512 pages = 2Meg on 4k page systems */
+ if (num_of_pages >= 512) {return 9; }
+ /* we have two or more pages order is at least 1 */
+ for (nump=2 ;nump <= 512;nump*=2) {
+ if (num_of_pages <= nump)
+ break;
+ order_of_mag +=1;
+ }
+ if (order_of_mag > 9) { order_of_mag = 9; } /* I know it's paranoid */
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s Exit on line %d, order = %d\n",
+ __FUNCTION__,__LINE__, order_of_mag);
+#endif
+ CLAW_DBF_TEXT_(5,trace,"mag%d",order_of_mag);
+ return order_of_mag;
+}
+
+/*-------------------------------------------------------------------*
+* *
+* add_claw_reads *
+* *
+*--------------------------------------------------------------------*/
+static int
+add_claw_reads(struct net_device *dev, struct ccwbk* p_first,
+ struct ccwbk* p_last)
+{
+ struct claw_privbk *privptr;
+ struct ccw1 temp_ccw;
+ struct endccw * p_end;
+#ifdef IOTRACE
+ struct ccwbk* p_buf;
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+#endif
+#ifdef DEBUGMSG
+ printk(KERN_INFO "dev\n");
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "p_first\n");
+ dumpit((char *) p_first, sizeof(struct ccwbk));
+ printk(KERN_INFO "p_last\n");
+ dumpit((char *) p_last, sizeof(struct ccwbk));
+#endif
+ CLAW_DBF_TEXT(4,trace,"addreads");
+ privptr = dev->priv;
+ p_end = privptr->p_end_ccw;
+
+ /* first CCW and last CCW contains a new set of read channel programs
+ * to apend the running channel programs
+ */
+ if ( p_first==NULL) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"addexit");
+ return 0;
+ }
+
+ /* set up ending CCW sequence for this segment */
+ if (p_end->read1) {
+ p_end->read1=0x00; /* second ending CCW is now active */
+ /* reset ending CCWs and setup TIC CCWs */
+ p_end->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ p_end->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ p_last->r_TIC_1.cda =(__u32)__pa(&p_end->read2_nop1);
+ p_last->r_TIC_2.cda =(__u32)__pa(&p_end->read2_nop1);
+ p_end->read2_nop2.cda=0;
+ p_end->read2_nop2.count=1;
+ }
+ else {
+ p_end->read1=0x01; /* first ending CCW is now active */
+ /* reset ending CCWs and setup TIC CCWs */
+ p_end->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ p_end->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ p_last->r_TIC_1.cda = (__u32)__pa(&p_end->read1_nop1);
+ p_last->r_TIC_2.cda = (__u32)__pa(&p_end->read1_nop1);
+ p_end->read1_nop2.cda=0;
+ p_end->read1_nop2.count=1;
+ }
+
+ if ( privptr-> p_read_active_first ==NULL ) {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s p_read_active_frist == NULL \n",
+ dev->name,__FUNCTION__);
+ printk(KERN_INFO "%s:%s Read active first/last changed \n",
+ dev->name,__FUNCTION__);
+#endif
+ privptr-> p_read_active_first= p_first; /* set new first */
+ privptr-> p_read_active_last = p_last; /* set new last */
+ }
+ else {
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s Read in progress \n",
+ dev->name,__FUNCTION__);
+#endif
+ /* set up TIC ccw */
+ temp_ccw.cda= (__u32)__pa(&p_first->read);
+ temp_ccw.count=0;
+ temp_ccw.flags=0;
+ temp_ccw.cmd_code = CCW_CLAW_CMD_TIC;
+
+
+ if (p_end->read1) {
+
+ /* first set of CCW's is chained to the new read */
+ /* chain, so the second set is chained to the active chain. */
+ /* Therefore modify the second set to point to the new */
+ /* read chain set up TIC CCWs */
+ /* make sure we update the CCW so channel doesn't fetch it */
+ /* when it's only half done */
+ memcpy( &p_end->read2_nop2, &temp_ccw ,
+ sizeof(struct ccw1));
+ privptr->p_read_active_last->r_TIC_1.cda=
+ (__u32)__pa(&p_first->read);
+ privptr->p_read_active_last->r_TIC_2.cda=
+ (__u32)__pa(&p_first->read);
+ }
+ else {
+ /* make sure we update the CCW so channel doesn't */
+ /* fetch it when it is only half done */
+ memcpy( &p_end->read1_nop2, &temp_ccw ,
+ sizeof(struct ccw1));
+ privptr->p_read_active_last->r_TIC_1.cda=
+ (__u32)__pa(&p_first->read);
+ privptr->p_read_active_last->r_TIC_2.cda=
+ (__u32)__pa(&p_first->read);
+ }
+ /* chain in new set of blocks */
+ privptr->p_read_active_last->next = p_first;
+ privptr->p_read_active_last=p_last;
+ } /* end of if ( privptr-> p_read_active_first ==NULL) */
+#ifdef IOTRACE
+ printk(KERN_INFO "%s:%s dump p_last CCW BK \n",dev->name,__FUNCTION__);
+ dumpit((char *)p_last, sizeof(struct ccwbk));
+ printk(KERN_INFO "%s:%s dump p_end CCW BK \n",dev->name,__FUNCTION__);
+ dumpit((char *)p_end, sizeof(struct endccw));
+
+ printk(KERN_INFO "%s:%s dump p_first CCW BK \n",dev->name,__FUNCTION__);
+ dumpit((char *)p_first, sizeof(struct ccwbk));
+ printk(KERN_INFO "%s:%s Dump Active CCW chain \n",
+ dev->name,__FUNCTION__);
+ p_buf=privptr->p_read_active_first;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"addexit");
+ return 0;
+} /* end of add_claw_reads */
+
+/*-------------------------------------------------------------------*
+ * ccw_check_return_code *
+ * *
+ *-------------------------------------------------------------------*/
+
+static void inline
+ccw_check_return_code(struct ccw_device *cdev, int return_code)
+{
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > enter \n",
+ cdev->dev.bus_id,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"ccwret");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "variable cdev =\n");
+ dumpit((char *) cdev, sizeof(struct ccw_device));
+ printk(KERN_INFO "variable return_code = %d\n",return_code);
+#endif
+ if (return_code != 0) {
+ switch (return_code) {
+ case -EBUSY:
+ printk(KERN_INFO "%s: Busy !\n",
+ cdev->dev.bus_id);
+ break;
+ case -ENODEV:
+ printk(KERN_EMERG "%s: Missing device called "
+ "for IO ENODEV\n", cdev->dev.bus_id);
+ break;
+ case -EIO:
+ printk(KERN_EMERG "%s: Status pending... EIO \n",
+ cdev->dev.bus_id);
+ break;
+ case -EINVAL:
+ printk(KERN_EMERG "%s: Invalid Dev State EINVAL \n",
+ cdev->dev.bus_id);
+ break;
+ default:
+ printk(KERN_EMERG "%s: Unknown error in "
+ "Do_IO %d\n",cdev->dev.bus_id, return_code);
+ }
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > exit on line %d\n",
+ cdev->dev.bus_id,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"ccwret");
+} /* end of ccw_check_return_code */
+
+/*-------------------------------------------------------------------*
+* ccw_check_unit_check *
+*--------------------------------------------------------------------*/
+
+static void inline
+ccw_check_unit_check(struct chbk * p_ch, unsigned char sense )
+{
+ struct net_device *dev = p_ch->ndev;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > enter\n",dev->name,__FUNCTION__);
+#endif
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *)dev, sizeof(struct net_device));
+ printk(KERN_INFO "%s: variable sense =\n",dev->name);
+ dumpit((char *)&sense, 2);
+#endif
+ CLAW_DBF_TEXT(4,trace,"unitchek");
+
+ printk(KERN_INFO "%s: Unit Check with sense byte:0x%04x\n",
+ dev->name, sense);
+
+ if (sense & 0x40) {
+ if (sense & 0x01) {
+ printk(KERN_WARNING "%s: Interface disconnect or "
+ "Selective reset "
+ "occurred (remote side)\n", dev->name);
+ }
+ else {
+ printk(KERN_WARNING "%s: System reset occured"
+ " (remote side)\n", dev->name);
+ }
+ }
+ else if (sense & 0x20) {
+ if (sense & 0x04) {
+ printk(KERN_WARNING "%s: Data-streaming "
+ "timeout)\n", dev->name);
+ }
+ else {
+ printk(KERN_WARNING "%s: Data-transfer parity"
+ " error\n", dev->name);
+ }
+ }
+ else if (sense & 0x10) {
+ if (sense & 0x20) {
+ printk(KERN_WARNING "%s: Hardware malfunction "
+ "(remote side)\n", dev->name);
+ }
+ else {
+ printk(KERN_WARNING "%s: read-data parity error "
+ "(remote side)\n", dev->name);
+ }
+ }
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+} /* end of ccw_check_unit_check */
+
+
+
+/*-------------------------------------------------------------------*
+* Dump buffer format *
+* *
+*--------------------------------------------------------------------*/
+#ifdef DEBUG
+static void
+dumpit(char* buf, int len)
+{
+
+ __u32 ct, sw, rm, dup;
+ char *ptr, *rptr;
+ char tbuf[82], tdup[82];
+#if (CONFIG_ARCH_S390X)
+ char addr[22];
+#else
+ char addr[12];
+#endif
+ char boff[12];
+ char bhex[82], duphex[82];
+ char basc[40];
+
+ sw = 0;
+ rptr =ptr=buf;
+ rm = 16;
+ duphex[0] = 0x00;
+ dup = 0;
+ for ( ct=0; ct < len; ct++, ptr++, rptr++ ) {
+ if (sw == 0) {
+#if (CONFIG_ARCH_S390X)
+ sprintf(addr, "%16.16lX",(unsigned long)rptr);
+#else
+ sprintf(addr, "%8.8X",(__u32)rptr);
+#endif
+ sprintf(boff, "%4.4X", (__u32)ct);
+ bhex[0] = '\0';
+ basc[0] = '\0';
+ }
+ if ((sw == 4) || (sw == 12)) {
+ strcat(bhex, " ");
+ }
+ if (sw == 8) {
+ strcat(bhex, " ");
+ }
+#if (CONFIG_ARCH_S390X)
+ sprintf(tbuf,"%2.2lX", (unsigned long)*ptr);
+#else
+ sprintf(tbuf,"%2.2X", (__u32)*ptr);
+#endif
+ tbuf[2] = '\0';
+ strcat(bhex, tbuf);
+ if ((0!=isprint(*ptr)) && (*ptr >= 0x20)) {
+ basc[sw] = *ptr;
+ }
+ else {
+ basc[sw] = '.';
+ }
+ basc[sw+1] = '\0';
+ sw++;
+ rm--;
+ if (sw==16) {
+ if ((strcmp(duphex, bhex)) !=0) {
+ if (dup !=0) {
+ sprintf(tdup,"Duplicate as above to"
+ " %s", addr);
+ printk( KERN_INFO " "
+ " --- %s ---\n",tdup);
+ }
+ printk( KERN_INFO " %s (+%s) : %s [%s]\n",
+ addr, boff, bhex, basc);
+ dup = 0;
+ strcpy(duphex, bhex);
+ }
+ else {
+ dup++;
+ }
+ sw = 0;
+ rm = 16;
+ }
+ } /* endfor */
+
+ if (sw != 0) {
+ for ( ; rm > 0; rm--, sw++ ) {
+ if ((sw==4) || (sw==12)) strcat(bhex, " ");
+ if (sw==8) strcat(bhex, " ");
+ strcat(bhex, " ");
+ strcat(basc, " ");
+ }
+ if (dup !=0) {
+ sprintf(tdup,"Duplicate as above to %s", addr);
+ printk( KERN_INFO " --- %s ---\n",
+ tdup);
+ }
+ printk( KERN_INFO " %s (+%s) : %s [%s]\n",
+ addr, boff, bhex, basc);
+ }
+ else {
+ if (dup >=1) {
+ sprintf(tdup,"Duplicate as above to %s", addr);
+ printk( KERN_INFO " --- %s ---\n",
+ tdup);
+ }
+ if (dup !=0) {
+ printk( KERN_INFO " %s (+%s) : %s [%s]\n",
+ addr, boff, bhex, basc);
+ }
+ }
+ return;
+
+} /* end of dumpit */
+#endif
+
+/*-------------------------------------------------------------------*
+* find_link *
+*--------------------------------------------------------------------*/
+static int
+find_link(struct net_device *dev, char *host_name, char *ws_name )
+{
+ struct claw_privbk *privptr;
+ struct claw_env *p_env;
+ int rc=0;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s > enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"findlink");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev = \n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "%s: variable host_name = %s\n",dev->name, host_name);
+ printk(KERN_INFO "%s: variable ws_name = %s\n",dev->name, ws_name);
+#endif
+ privptr=dev->priv;
+ p_env=privptr->p_env;
+ switch (p_env->packing)
+ {
+ case PACKING_ASK:
+ if ((memcmp(WS_APPL_NAME_PACKED, host_name, 8)!=0) ||
+ (memcmp(WS_APPL_NAME_PACKED, ws_name, 8)!=0 ))
+ rc = EINVAL;
+ break;
+ case DO_PACKED:
+ case PACK_SEND:
+ if ((memcmp(WS_APPL_NAME_IP_NAME, host_name, 8)!=0) ||
+ (memcmp(WS_APPL_NAME_IP_NAME, ws_name, 8)!=0 ))
+ rc = EINVAL;
+ break;
+ default:
+ if ((memcmp(HOST_APPL_NAME, host_name, 8)!=0) ||
+ (memcmp(p_env->api_type , ws_name, 8)!=0))
+ rc = EINVAL;
+ break;
+ }
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return 0;
+} /* end of find_link */
+
+/*-------------------------------------------------------------------*
+ * claw_hw_tx *
+ * *
+ * *
+ *-------------------------------------------------------------------*/
+
+static int
+claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid)
+{
+ int rc=0;
+ struct claw_privbk *privptr;
+ struct ccwbk *p_this_ccw;
+ struct ccwbk *p_first_ccw;
+ struct ccwbk *p_last_ccw;
+ __u32 numBuffers;
+ signed long len_of_data;
+ unsigned long bytesInThisBuffer;
+ unsigned char *pDataAddress;
+ struct endccw *pEnd;
+ struct ccw1 tempCCW;
+ struct chbk *p_ch;
+ struct claw_env *p_env;
+ int lock;
+ struct clawph *pk_head;
+ struct chbk *ch;
+#ifdef IOTRACE
+ struct ccwbk *p_buf;
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"hw_tx");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev skb =\n",dev->name);
+ dumpit((char *) skb, sizeof(struct sk_buff));
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "%s: variable linkid = %ld\n",dev->name,linkid);
+#endif
+ privptr = (struct claw_privbk *) (dev->priv);
+ p_ch=(struct chbk *)&privptr->channel[WRITE];
+ p_env =privptr->p_env;
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: %s() dump sk_buff \n",dev->name,__FUNCTION__);
+ dumpit((char *)skb ,sizeof(struct sk_buff));
+#endif
+ claw_free_wrt_buf(dev); /* Clean up free chain if posible */
+ /* scan the write queue to free any completed write packets */
+ p_first_ccw=NULL;
+ p_last_ccw=NULL;
+ if ((p_env->packing >= PACK_SEND) &&
+ (skb->cb[1] != 'P')) {
+ skb_push(skb,sizeof(struct clawph));
+ pk_head=(struct clawph *)skb->data;
+ pk_head->len=skb->len-sizeof(struct clawph);
+ if (pk_head->len%4) {
+ pk_head->len+= 4-(pk_head->len%4);
+ skb_pad(skb,4-(pk_head->len%4));
+ skb_put(skb,4-(pk_head->len%4));
+ }
+ if (p_env->packing == DO_PACKED)
+ pk_head->link_num = linkid;
+ else
+ pk_head->link_num = 0;
+ pk_head->flag = 0x00;
+ skb_pad(skb,4);
+ skb->cb[1] = 'P';
+ }
+ if (linkid == 0) {
+ if (claw_check_busy(dev)) {
+ if (privptr->write_free_count!=0) {
+ claw_clear_busy(dev);
+ }
+ else {
+ claw_strt_out_IO(dev );
+ claw_free_wrt_buf( dev );
+ if (privptr->write_free_count==0) {
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: "
+ "(claw_check_busy) no free write "
+ "buffers\n", dev->name);
+#endif
+ ch = &privptr->channel[WRITE];
+ atomic_inc(&skb->users);
+ skb_queue_tail(&ch->collect_queue, skb);
+ goto Done;
+ }
+ else {
+ claw_clear_busy(dev);
+ }
+ }
+ }
+ /* tx lock */
+ if (claw_test_and_setbit_busy(TB_TX,dev)) { /* set to busy */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: busy (claw_test_and_setbit_"
+ "busy)\n", dev->name);
+#endif
+ ch = &privptr->channel[WRITE];
+ atomic_inc(&skb->users);
+ skb_queue_tail(&ch->collect_queue, skb);
+ claw_strt_out_IO(dev );
+ rc=-EBUSY;
+ goto Done2;
+ }
+ }
+ /* See how many write buffers are required to hold this data */
+ numBuffers= ( skb->len + privptr->p_env->write_size - 1) /
+ ( privptr->p_env->write_size);
+
+ /* If that number of buffers isn't available, give up for now */
+ if (privptr->write_free_count < numBuffers ||
+ privptr->p_write_free_chain == NULL ) {
+
+ claw_setbit_busy(TB_NOBUFFER,dev);
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: busy (claw_setbit_busy"
+ "(TB_NOBUFFER))\n", dev->name);
+ printk(KERN_INFO " free_count: %d, numBuffers : %d\n",
+ (int)privptr->write_free_count,(int) numBuffers );
+#endif
+ ch = &privptr->channel[WRITE];
+ atomic_inc(&skb->users);
+ skb_queue_tail(&ch->collect_queue, skb);
+ CLAW_DBF_TEXT(2,trace,"clawbusy");
+ goto Done2;
+ }
+ pDataAddress=skb->data;
+ len_of_data=skb->len;
+
+ while (len_of_data > 0) {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() length-of-data is %ld \n",
+ dev->name ,__FUNCTION__,len_of_data);
+ dumpit((char *)pDataAddress ,64);
+#endif
+ p_this_ccw=privptr->p_write_free_chain; /* get a block */
+ if (p_this_ccw == NULL) { /* lost the race */
+ ch = &privptr->channel[WRITE];
+ atomic_inc(&skb->users);
+ skb_queue_tail(&ch->collect_queue, skb);
+ goto Done2;
+ }
+ privptr->p_write_free_chain=p_this_ccw->next;
+ p_this_ccw->next=NULL;
+ --privptr->write_free_count; /* -1 */
+ bytesInThisBuffer=len_of_data;
+ memcpy( p_this_ccw->p_buffer,pDataAddress, bytesInThisBuffer);
+ len_of_data-=bytesInThisBuffer;
+ pDataAddress+=(unsigned long)bytesInThisBuffer;
+ /* setup write CCW */
+ p_this_ccw->write.cmd_code = (linkid * 8) +1;
+ if (len_of_data>0) {
+ p_this_ccw->write.cmd_code+=MORE_to_COME_FLAG;
+ }
+ p_this_ccw->write.count=bytesInThisBuffer;
+ /* now add to end of this chain */
+ if (p_first_ccw==NULL) {
+ p_first_ccw=p_this_ccw;
+ }
+ if (p_last_ccw!=NULL) {
+ p_last_ccw->next=p_this_ccw;
+ /* set up TIC ccws */
+ p_last_ccw->w_TIC_1.cda=
+ (__u32)__pa(&p_this_ccw->write);
+ }
+ p_last_ccw=p_this_ccw; /* save new last block */
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: %s() > CCW and Buffer %ld bytes long \n",
+ dev->name,__FUNCTION__,bytesInThisBuffer);
+ dumpit((char *)p_this_ccw, sizeof(struct ccwbk));
+ dumpit((char *)p_this_ccw->p_buffer, 64);
+#endif
+ }
+
+ /* FirstCCW and LastCCW now contain a new set of write channel
+ * programs to append to the running channel program
+ */
+
+ if (p_first_ccw!=NULL) {
+ /* setup ending ccw sequence for this segment */
+ pEnd=privptr->p_end_ccw;
+ if (pEnd->write1) {
+ pEnd->write1=0x00; /* second end ccw is now active */
+ /* set up Tic CCWs */
+ p_last_ccw->w_TIC_1.cda=
+ (__u32)__pa(&pEnd->write2_nop1);
+ pEnd->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ pEnd->write2_nop2.flags =
+ CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ pEnd->write2_nop2.cda=0;
+ pEnd->write2_nop2.count=1;
+ }
+ else { /* end of if (pEnd->write1)*/
+ pEnd->write1=0x01; /* first end ccw is now active */
+ /* set up Tic CCWs */
+ p_last_ccw->w_TIC_1.cda=
+ (__u32)__pa(&pEnd->write1_nop1);
+ pEnd->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ pEnd->write1_nop2.flags =
+ CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ pEnd->write1_nop2.cda=0;
+ pEnd->write1_nop2.count=1;
+ } /* end if if (pEnd->write1) */
+
+
+ if (privptr->p_write_active_first==NULL ) {
+ privptr->p_write_active_first=p_first_ccw;
+ privptr->p_write_active_last=p_last_ccw;
+ }
+ else {
+
+ /* set up Tic CCWs */
+
+ tempCCW.cda=(__u32)__pa(&p_first_ccw->write);
+ tempCCW.count=0;
+ tempCCW.flags=0;
+ tempCCW.cmd_code=CCW_CLAW_CMD_TIC;
+
+ if (pEnd->write1) {
+
+ /*
+ * first set of ending CCW's is chained to the new write
+ * chain, so the second set is chained to the active chain
+ * Therefore modify the second set to point the new write chain.
+ * make sure we update the CCW atomically
+ * so channel does not fetch it when it's only half done
+ */
+ memcpy( &pEnd->write2_nop2, &tempCCW ,
+ sizeof(struct ccw1));
+ privptr->p_write_active_last->w_TIC_1.cda=
+ (__u32)__pa(&p_first_ccw->write);
+ }
+ else {
+
+ /*make sure we update the CCW atomically
+ *so channel does not fetch it when it's only half done
+ */
+ memcpy(&pEnd->write1_nop2, &tempCCW ,
+ sizeof(struct ccw1));
+ privptr->p_write_active_last->w_TIC_1.cda=
+ (__u32)__pa(&p_first_ccw->write);
+
+ } /* end if if (pEnd->write1) */
+
+ privptr->p_write_active_last->next=p_first_ccw;
+ privptr->p_write_active_last=p_last_ccw;
+ }
+
+ } /* endif (p_first_ccw!=NULL) */
+
+
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: %s() > Dump Active CCW chain \n",
+ dev->name,__FUNCTION__);
+ p_buf=privptr->p_write_active_first;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+ p_buf=(struct ccwbk*)privptr->p_end_ccw;
+ dumpit((char *)p_buf, sizeof(struct endccw));
+#endif
+ dev_kfree_skb(skb);
+ if (linkid==0) {
+ lock=LOCK_NO;
+ }
+ else {
+ lock=LOCK_YES;
+ }
+ claw_strt_out_IO(dev );
+ /* if write free count is zero , set NOBUFFER */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() > free_count is %d\n",
+ dev->name,__FUNCTION__,
+ (int) privptr->write_free_count );
+#endif
+ if (privptr->write_free_count==0) {
+ claw_setbit_busy(TB_NOBUFFER,dev);
+ }
+Done2:
+ claw_clearbit_busy(TB_TX,dev);
+Done:
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > exit on line %d, rc = %d \n",
+ dev->name,__FUNCTION__,__LINE__, rc);
+#endif
+ return(rc);
+} /* end of claw_hw_tx */
+
+/*-------------------------------------------------------------------*
+* *
+* init_ccw_bk *
+* *
+*--------------------------------------------------------------------*/
+
+static int
+init_ccw_bk(struct net_device *dev)
+{
+
+ __u32 ccw_blocks_required;
+ __u32 ccw_blocks_perpage;
+ __u32 ccw_pages_required;
+ __u32 claw_reads_perpage=1;
+ __u32 claw_read_pages;
+ __u32 claw_writes_perpage=1;
+ __u32 claw_write_pages;
+ void *p_buff=NULL;
+ struct ccwbk*p_free_chain;
+ struct ccwbk*p_buf;
+ struct ccwbk*p_last_CCWB;
+ struct ccwbk*p_first_CCWB;
+ struct endccw *p_endccw=NULL;
+ addr_t real_address;
+ struct claw_privbk *privptr=dev->priv;
+ struct clawh *pClawH=NULL;
+ addr_t real_TIC_address;
+ int i,j;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"init_ccw");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+#endif
+
+ /* initialize statistics field */
+ privptr->active_link_ID=0;
+ /* initialize ccwbk pointers */
+ privptr->p_write_free_chain=NULL; /* pointer to free ccw chain*/
+ privptr->p_write_active_first=NULL; /* pointer to the first write ccw*/
+ privptr->p_write_active_last=NULL; /* pointer to the last write ccw*/
+ privptr->p_read_active_first=NULL; /* pointer to the first read ccw*/
+ privptr->p_read_active_last=NULL; /* pointer to the last read ccw */
+ privptr->p_end_ccw=NULL; /* pointer to ending ccw */
+ privptr->p_claw_signal_blk=NULL; /* pointer to signal block */
+ privptr->buffs_alloc = 0;
+ memset(&privptr->end_ccw, 0x00, sizeof(struct endccw));
+ memset(&privptr->ctl_bk, 0x00, sizeof(struct clawctl));
+ /* initialize free write ccwbk counter */
+ privptr->write_free_count=0; /* number of free bufs on write chain */
+ p_last_CCWB = NULL;
+ p_first_CCWB= NULL;
+ /*
+ * We need 1 CCW block for each read buffer, 1 for each
+ * write buffer, plus 1 for ClawSignalBlock
+ */
+ ccw_blocks_required =
+ privptr->p_env->read_buffers+privptr->p_env->write_buffers+1;
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() "
+ "ccw_blocks_required=%d\n",
+ dev->name,__FUNCTION__,
+ ccw_blocks_required);
+ printk(KERN_INFO "%s: %s() "
+ "PAGE_SIZE=0x%x\n",
+ dev->name,__FUNCTION__,
+ (unsigned int)PAGE_SIZE);
+ printk(KERN_INFO "%s: %s() > "
+ "PAGE_MASK=0x%x\n",
+ dev->name,__FUNCTION__,
+ (unsigned int)PAGE_MASK);
+#endif
+ /*
+ * compute number of CCW blocks that will fit in a page
+ */
+ ccw_blocks_perpage= PAGE_SIZE / CCWBK_SIZE;
+ ccw_pages_required=
+ (ccw_blocks_required+ccw_blocks_perpage -1) /
+ ccw_blocks_perpage;
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() > ccw_blocks_perpage=%d\n",
+ dev->name,__FUNCTION__,
+ ccw_blocks_perpage);
+ printk(KERN_INFO "%s: %s() > ccw_pages_required=%d\n",
+ dev->name,__FUNCTION__,
+ ccw_pages_required);
+#endif
+ /*
+ * read and write sizes are set by 2 constants in claw.h
+ * 4k and 32k. Unpacked values other than 4k are not going to
+ * provide good performance. With packing buffers support 32k
+ * buffers are used.
+ */
+ if (privptr->p_env->read_size < PAGE_SIZE) {
+ claw_reads_perpage= PAGE_SIZE / privptr->p_env->read_size;
+ claw_read_pages= (privptr->p_env->read_buffers +
+ claw_reads_perpage -1) / claw_reads_perpage;
+ }
+ else { /* > or equal */
+ privptr->p_buff_pages_perread=
+ (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;
+ claw_read_pages=
+ privptr->p_env->read_buffers * privptr->p_buff_pages_perread;
+ }
+ if (privptr->p_env->write_size < PAGE_SIZE) {
+ claw_writes_perpage=
+ PAGE_SIZE / privptr->p_env->write_size;
+ claw_write_pages=
+ (privptr->p_env->write_buffers + claw_writes_perpage -1) /
+ claw_writes_perpage;
+
+ }
+ else { /* > or equal */
+ privptr->p_buff_pages_perwrite=
+ (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;
+ claw_write_pages=
+ privptr->p_env->write_buffers * privptr->p_buff_pages_perwrite;
+ }
+#ifdef DEBUGMSG
+ if (privptr->p_env->read_size < PAGE_SIZE) {
+ printk(KERN_INFO "%s: %s() reads_perpage=%d\n",
+ dev->name,__FUNCTION__,
+ claw_reads_perpage);
+ }
+ else {
+ printk(KERN_INFO "%s: %s() pages_perread=%d\n",
+ dev->name,__FUNCTION__,
+ privptr->p_buff_pages_perread);
+ }
+ printk(KERN_INFO "%s: %s() read_pages=%d\n",
+ dev->name,__FUNCTION__,
+ claw_read_pages);
+ if (privptr->p_env->write_size < PAGE_SIZE) {
+ printk(KERN_INFO "%s: %s() writes_perpage=%d\n",
+ dev->name,__FUNCTION__,
+ claw_writes_perpage);
+ }
+ else {
+ printk(KERN_INFO "%s: %s() pages_perwrite=%d\n",
+ dev->name,__FUNCTION__,
+ privptr->p_buff_pages_perwrite);
+ }
+ printk(KERN_INFO "%s: %s() write_pages=%d\n",
+ dev->name,__FUNCTION__,
+ claw_write_pages);
+#endif
+
+
+ /*
+ * allocate ccw_pages_required
+ */
+ if (privptr->p_buff_ccw==NULL) {
+ privptr->p_buff_ccw=
+ (void *)__get_free_pages(__GFP_DMA,
+ (int)pages_to_order_of_mag(ccw_pages_required ));
+ if (privptr->p_buff_ccw==NULL) {
+ printk(KERN_INFO "%s: %s() "
+ "__get_free_pages for CCWs failed : "
+ "pages is %d\n",
+ dev->name,__FUNCTION__,
+ ccw_pages_required );
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > "
+ "exit on line %d, rc = ENOMEM\n",
+ dev->name,__FUNCTION__,
+ __LINE__);
+#endif
+ return -ENOMEM;
+ }
+ privptr->p_buff_ccw_num=ccw_pages_required;
+ }
+ memset(privptr->p_buff_ccw, 0x00,
+ privptr->p_buff_ccw_num * PAGE_SIZE);
+
+ /*
+ * obtain ending ccw block address
+ *
+ */
+ privptr->p_end_ccw = (struct endccw *)&privptr->end_ccw;
+ real_address = (__u32)__pa(privptr->p_end_ccw);
+ /* Initialize ending CCW block */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() begin initialize ending CCW blocks\n",
+ dev->name,__FUNCTION__);
+#endif
+
+ p_endccw=privptr->p_end_ccw;
+ p_endccw->real=real_address;
+ p_endccw->write1=0x00;
+ p_endccw->read1=0x00;
+
+ /* write1_nop1 */
+ p_endccw->write1_nop1.cmd_code = CCW_CLAW_CMD_NOP;
+ p_endccw->write1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_endccw->write1_nop1.count = 1;
+ p_endccw->write1_nop1.cda = 0;
+
+ /* write1_nop2 */
+ p_endccw->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ p_endccw->write1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ p_endccw->write1_nop2.count = 1;
+ p_endccw->write1_nop2.cda = 0;
+
+ /* write2_nop1 */
+ p_endccw->write2_nop1.cmd_code = CCW_CLAW_CMD_NOP;
+ p_endccw->write2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_endccw->write2_nop1.count = 1;
+ p_endccw->write2_nop1.cda = 0;
+
+ /* write2_nop2 */
+ p_endccw->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ p_endccw->write2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ p_endccw->write2_nop2.count = 1;
+ p_endccw->write2_nop2.cda = 0;
+
+ /* read1_nop1 */
+ p_endccw->read1_nop1.cmd_code = CCW_CLAW_CMD_NOP;
+ p_endccw->read1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_endccw->read1_nop1.count = 1;
+ p_endccw->read1_nop1.cda = 0;
+
+ /* read1_nop2 */
+ p_endccw->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ p_endccw->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ p_endccw->read1_nop2.count = 1;
+ p_endccw->read1_nop2.cda = 0;
+
+ /* read2_nop1 */
+ p_endccw->read2_nop1.cmd_code = CCW_CLAW_CMD_NOP;
+ p_endccw->read2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_endccw->read2_nop1.count = 1;
+ p_endccw->read2_nop1.cda = 0;
+
+ /* read2_nop2 */
+ p_endccw->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF;
+ p_endccw->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP;
+ p_endccw->read2_nop2.count = 1;
+ p_endccw->read2_nop2.cda = 0;
+
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: %s() dump claw ending CCW BK \n",
+ dev->name,__FUNCTION__);
+ dumpit((char *)p_endccw, sizeof(struct endccw));
+#endif
+
+ /*
+ * Build a chain of CCWs
+ *
+ */
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() Begin build a chain of CCW buffer \n",
+ dev->name,__FUNCTION__);
+#endif
+ p_buff=privptr->p_buff_ccw;
+
+ p_free_chain=NULL;
+ for (i=0 ; i < ccw_pages_required; i++ ) {
+ real_address = (__u32)__pa(p_buff);
+ p_buf=p_buff;
+ for (j=0 ; j < ccw_blocks_perpage ; j++) {
+ p_buf->next = p_free_chain;
+ p_free_chain = p_buf;
+ p_buf->real=(__u32)__pa(p_buf);
+ ++p_buf;
+ }
+ p_buff+=PAGE_SIZE;
+ }
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() "
+ "End build a chain of CCW buffer \n",
+ dev->name,__FUNCTION__);
+ p_buf=p_free_chain;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+#endif
+
+ /*
+ * Initialize ClawSignalBlock
+ *
+ */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() "
+ "Begin initialize ClawSignalBlock \n",
+ dev->name,__FUNCTION__);
+#endif
+ if (privptr->p_claw_signal_blk==NULL) {
+ privptr->p_claw_signal_blk=p_free_chain;
+ p_free_chain=p_free_chain->next;
+ pClawH=(struct clawh *)privptr->p_claw_signal_blk;
+ pClawH->length=0xffff;
+ pClawH->opcode=0xff;
+ pClawH->flag=CLAW_BUSY;
+ }
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() > End initialize "
+ "ClawSignalBlock\n",
+ dev->name,__FUNCTION__);
+ dumpit((char *)privptr->p_claw_signal_blk, sizeof(struct ccwbk));
+#endif
+
+ /*
+ * allocate write_pages_required and add to free chain
+ */
+ if (privptr->p_buff_write==NULL) {
+ if (privptr->p_env->write_size < PAGE_SIZE) {
+ privptr->p_buff_write=
+ (void *)__get_free_pages(__GFP_DMA,
+ (int)pages_to_order_of_mag(claw_write_pages ));
+ if (privptr->p_buff_write==NULL) {
+ printk(KERN_INFO "%s: %s() __get_free_pages for write"
+ " bufs failed : get is for %d pages\n",
+ dev->name,__FUNCTION__,claw_write_pages );
+ free_pages((unsigned long)privptr->p_buff_ccw,
+ (int)pages_to_order_of_mag(privptr->p_buff_ccw_num));
+ privptr->p_buff_ccw=NULL;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > exit on line %d,"
+ "rc = ENOMEM\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return -ENOMEM;
+ }
+ /*
+ * Build CLAW write free chain
+ *
+ */
+
+ memset(privptr->p_buff_write, 0x00,
+ ccw_pages_required * PAGE_SIZE);
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() Begin build claw write free "
+ "chain \n",dev->name,__FUNCTION__);
+#endif
+ privptr->p_write_free_chain=NULL;
+
+ p_buff=privptr->p_buff_write;
+
+ for (i=0 ; i< privptr->p_env->write_buffers ; i++) {
+ p_buf = p_free_chain; /* get a CCW */
+ p_free_chain = p_buf->next;
+ p_buf->next =privptr->p_write_free_chain;
+ privptr->p_write_free_chain = p_buf;
+ p_buf-> p_buffer = (struct clawbuf *)p_buff;
+ p_buf-> write.cda = (__u32)__pa(p_buff);
+ p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF;
+ p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> w_read_FF.count = 1;
+ p_buf-> w_read_FF.cda =
+ (__u32)__pa(&p_buf-> header.flag);
+ p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC;
+ p_buf-> w_TIC_1.flags = 0;
+ p_buf-> w_TIC_1.count = 0;
+
+ if (((unsigned long)p_buff+privptr->p_env->write_size) >=
+ ((unsigned long)(p_buff+2*
+ (privptr->p_env->write_size) -1) & PAGE_MASK)) {
+ p_buff= p_buff+privptr->p_env->write_size;
+ }
+ }
+ }
+ else /* Buffers are => PAGE_SIZE. 1 buff per get_free_pages */
+ {
+ privptr->p_write_free_chain=NULL;
+ for (i = 0; i< privptr->p_env->write_buffers ; i++) {
+ p_buff=(void *)__get_free_pages(__GFP_DMA,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perwrite) );
+#ifdef IOTRACE
+ printk(KERN_INFO "%s:%s __get_free_pages "
+ "for writes buf: get for %d pages\n",
+ dev->name,__FUNCTION__,
+ privptr->p_buff_pages_perwrite);
+#endif
+ if (p_buff==NULL) {
+ printk(KERN_INFO "%s:%s __get_free_pages"
+ "for writes buf failed : get is for %d pages\n",
+ dev->name,
+ __FUNCTION__,
+ privptr->p_buff_pages_perwrite );
+ free_pages((unsigned long)privptr->p_buff_ccw,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_ccw_num));
+ privptr->p_buff_ccw=NULL;
+ p_buf=privptr->p_buff_write;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)
+ p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perwrite));
+ p_buf=p_buf->next;
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s exit on line %d, rc = ENOMEM\n",
+ dev->name,
+ __FUNCTION__,
+ __LINE__);
+#endif
+ return -ENOMEM;
+ } /* Error on get_pages */
+ memset(p_buff, 0x00, privptr->p_env->write_size );
+ p_buf = p_free_chain;
+ p_free_chain = p_buf->next;
+ p_buf->next = privptr->p_write_free_chain;
+ privptr->p_write_free_chain = p_buf;
+ privptr->p_buff_write = p_buf;
+ p_buf->p_buffer=(struct clawbuf *)p_buff;
+ p_buf-> write.cda = (__u32)__pa(p_buff);
+ p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF;
+ p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> w_read_FF.count = 1;
+ p_buf-> w_read_FF.cda =
+ (__u32)__pa(&p_buf-> header.flag);
+ p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC;
+ p_buf-> w_TIC_1.flags = 0;
+ p_buf-> w_TIC_1.count = 0;
+ } /* for all write_buffers */
+
+ } /* else buffers are PAGE_SIZE or bigger */
+
+ }
+ privptr->p_buff_write_num=claw_write_pages;
+ privptr->write_free_count=privptr->p_env->write_buffers;
+
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s End build claw write free chain \n",
+ dev->name,__FUNCTION__);
+ p_buf=privptr->p_write_free_chain;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+#endif
+ /*
+ * allocate read_pages_required and chain to free chain
+ */
+ if (privptr->p_buff_read==NULL) {
+ if (privptr->p_env->read_size < PAGE_SIZE) {
+ privptr->p_buff_read=
+ (void *)__get_free_pages(__GFP_DMA,
+ (int)pages_to_order_of_mag(claw_read_pages) );
+ if (privptr->p_buff_read==NULL) {
+ printk(KERN_INFO "%s: %s() "
+ "__get_free_pages for read buf failed : "
+ "get is for %d pages\n",
+ dev->name,__FUNCTION__,claw_read_pages );
+ free_pages((unsigned long)privptr->p_buff_ccw,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_ccw_num));
+ /* free the write pages size is < page size */
+ free_pages((unsigned long)privptr->p_buff_write,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_write_num));
+ privptr->p_buff_ccw=NULL;
+ privptr->p_buff_write=NULL;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > exit on line %d, rc ="
+ " ENOMEM\n",dev->name,__FUNCTION__,__LINE__);
+#endif
+ return -ENOMEM;
+ }
+ memset(privptr->p_buff_read, 0x00, claw_read_pages * PAGE_SIZE);
+ privptr->p_buff_read_num=claw_read_pages;
+ /*
+ * Build CLAW read free chain
+ *
+ */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() Begin build claw read free chain \n",
+ dev->name,__FUNCTION__);
+#endif
+ p_buff=privptr->p_buff_read;
+ for (i=0 ; i< privptr->p_env->read_buffers ; i++) {
+ p_buf = p_free_chain;
+ p_free_chain = p_buf->next;
+
+ if (p_last_CCWB==NULL) {
+ p_buf->next=NULL;
+ real_TIC_address=0;
+ p_last_CCWB=p_buf;
+ }
+ else {
+ p_buf->next=p_first_CCWB;
+ real_TIC_address=
+ (__u32)__pa(&p_first_CCWB -> read );
+ }
+
+ p_first_CCWB=p_buf;
+
+ p_buf->p_buffer=(struct clawbuf *)p_buff;
+ /* initialize read command */
+ p_buf-> read.cmd_code = CCW_CLAW_CMD_READ;
+ p_buf-> read.cda = (__u32)__pa(p_buff);
+ p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> read.count = privptr->p_env->read_size;
+
+ /* initialize read_h command */
+ p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER;
+ p_buf-> read_h.cda =
+ (__u32)__pa(&(p_buf->header));
+ p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> read_h.count = sizeof(struct clawh);
+
+ /* initialize Signal command */
+ p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD;
+ p_buf-> signal.cda =
+ (__u32)__pa(&(pClawH->flag));
+ p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> signal.count = 1;
+
+ /* initialize r_TIC_1 command */
+ p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC;
+ p_buf-> r_TIC_1.cda = (__u32)real_TIC_address;
+ p_buf-> r_TIC_1.flags = 0;
+ p_buf-> r_TIC_1.count = 0;
+
+ /* initialize r_read_FF command */
+ p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF;
+ p_buf-> r_read_FF.cda =
+ (__u32)__pa(&(pClawH->flag));
+ p_buf-> r_read_FF.flags =
+ CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI;
+ p_buf-> r_read_FF.count = 1;
+
+ /* initialize r_TIC_2 */
+ memcpy(&p_buf->r_TIC_2,
+ &p_buf->r_TIC_1, sizeof(struct ccw1));
+
+ /* initialize Header */
+ p_buf->header.length=0xffff;
+ p_buf->header.opcode=0xff;
+ p_buf->header.flag=CLAW_PENDING;
+
+ if (((unsigned long)p_buff+privptr->p_env->read_size) >=
+ ((unsigned long)(p_buff+2*(privptr->p_env->read_size) -1)
+ & PAGE_MASK) ) {
+ p_buff= p_buff+privptr->p_env->read_size;
+ }
+ else {
+ p_buff=
+ (void *)((unsigned long)
+ (p_buff+2*(privptr->p_env->read_size) -1)
+ & PAGE_MASK) ;
+ }
+ } /* for read_buffers */
+ } /* read_size < PAGE_SIZE */
+ else { /* read Size >= PAGE_SIZE */
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() Begin build claw read free chain \n",
+ dev->name,__FUNCTION__);
+#endif
+ for (i=0 ; i< privptr->p_env->read_buffers ; i++) {
+ p_buff = (void *)__get_free_pages(__GFP_DMA,
+ (int)pages_to_order_of_mag(privptr->p_buff_pages_perread) );
+ if (p_buff==NULL) {
+ printk(KERN_INFO "%s: %s() __get_free_pages for read "
+ "buf failed : get is for %d pages\n",
+ dev->name,__FUNCTION__,
+ privptr->p_buff_pages_perread );
+ free_pages((unsigned long)privptr->p_buff_ccw,
+ (int)pages_to_order_of_mag(privptr->p_buff_ccw_num));
+ /* free the write pages */
+ p_buf=privptr->p_buff_write;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perwrite ));
+ p_buf=p_buf->next;
+ }
+ /* free any read pages already alloc */
+ p_buf=privptr->p_buff_read;
+ while (p_buf!=NULL) {
+ free_pages((unsigned long)p_buf->p_buffer,
+ (int)pages_to_order_of_mag(
+ privptr->p_buff_pages_perread ));
+ p_buf=p_buf->next;
+ }
+ privptr->p_buff_ccw=NULL;
+ privptr->p_buff_write=NULL;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() exit on line %d, rc = ENOMEM\n",
+ dev->name,__FUNCTION__,
+ __LINE__);
+#endif
+ return -ENOMEM;
+ }
+ memset(p_buff, 0x00, privptr->p_env->read_size);
+ p_buf = p_free_chain;
+ privptr->p_buff_read = p_buf;
+ p_free_chain = p_buf->next;
+
+ if (p_last_CCWB==NULL) {
+ p_buf->next=NULL;
+ real_TIC_address=0;
+ p_last_CCWB=p_buf;
+ }
+ else {
+ p_buf->next=p_first_CCWB;
+ real_TIC_address=
+ (addr_t)__pa(
+ &p_first_CCWB -> read );
+ }
+
+ p_first_CCWB=p_buf;
+ /* save buff address */
+ p_buf->p_buffer=(struct clawbuf *)p_buff;
+ /* initialize read command */
+ p_buf-> read.cmd_code = CCW_CLAW_CMD_READ;
+ p_buf-> read.cda = (__u32)__pa(p_buff);
+ p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> read.count = privptr->p_env->read_size;
+
+ /* initialize read_h command */
+ p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER;
+ p_buf-> read_h.cda =
+ (__u32)__pa(&(p_buf->header));
+ p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> read_h.count = sizeof(struct clawh);
+
+ /* initialize Signal command */
+ p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD;
+ p_buf-> signal.cda =
+ (__u32)__pa(&(pClawH->flag));
+ p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ p_buf-> signal.count = 1;
+
+ /* initialize r_TIC_1 command */
+ p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC;
+ p_buf-> r_TIC_1.cda = (__u32)real_TIC_address;
+ p_buf-> r_TIC_1.flags = 0;
+ p_buf-> r_TIC_1.count = 0;
+
+ /* initialize r_read_FF command */
+ p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF;
+ p_buf-> r_read_FF.cda =
+ (__u32)__pa(&(pClawH->flag));
+ p_buf-> r_read_FF.flags =
+ CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI;
+ p_buf-> r_read_FF.count = 1;
+
+ /* initialize r_TIC_2 */
+ memcpy(&p_buf->r_TIC_2, &p_buf->r_TIC_1,
+ sizeof(struct ccw1));
+
+ /* initialize Header */
+ p_buf->header.length=0xffff;
+ p_buf->header.opcode=0xff;
+ p_buf->header.flag=CLAW_PENDING;
+
+ } /* For read_buffers */
+ } /* read_size >= PAGE_SIZE */
+ } /* pBuffread = NULL */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() > End build claw read free chain \n",
+ dev->name,__FUNCTION__);
+ p_buf=p_first_CCWB;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+
+#endif
+ add_claw_reads( dev ,p_first_CCWB , p_last_CCWB);
+ privptr->buffs_alloc = 1;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return 0;
+} /* end of init_ccw_bk */
+
+/*-------------------------------------------------------------------*
+* *
+* probe_error *
+* *
+*--------------------------------------------------------------------*/
+
+static void
+probe_error( struct ccwgroup_device *cgdev)
+{
+ struct claw_privbk *privptr;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s enter \n",__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"proberr");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s variable cgdev =\n",__FUNCTION__);
+ dumpit((char *) cgdev, sizeof(struct ccwgroup_device));
+#endif
+ privptr=(struct claw_privbk *)cgdev->dev.driver_data;
+ if (privptr!=NULL) {
+ if (privptr->p_env != NULL) {
+ kfree(privptr->p_env);
+ privptr->p_env=NULL;
+ }
+ if (privptr->p_mtc_envelope!=NULL) {
+ kfree(privptr->p_mtc_envelope);
+ privptr->p_mtc_envelope=NULL;
+ }
+ kfree(privptr);
+ privptr=NULL;
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s > exit on line %d\n",
+ __FUNCTION__,__LINE__);
+#endif
+
+ return;
+} /* probe_error */
+
+
+
+/*-------------------------------------------------------------------*
+* claw_process_control *
+* *
+* *
+*--------------------------------------------------------------------*/
+
+static int
+claw_process_control( struct net_device *dev, struct ccwbk * p_ccw)
+{
+
+ struct clawbuf *p_buf;
+ struct clawctl ctlbk;
+ struct clawctl *p_ctlbk;
+ char temp_host_name[8];
+ char temp_ws_name[8];
+ struct claw_privbk *privptr;
+ struct claw_env *p_env;
+ struct sysval *p_sysval;
+ struct conncmd *p_connect=NULL;
+ int rc;
+ struct chbk *p_ch = NULL;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > enter \n",
+ dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"clw_cntl");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "%s: variable p_ccw =\n",dev->name);
+ dumpit((char *) p_ccw, sizeof(struct ccwbk *));
+#endif
+ udelay(1000); /* Wait a ms for the control packets to
+ *catch up to each other */
+ privptr=dev->priv;
+ p_env=privptr->p_env;
+ memcpy( &temp_host_name, p_env->host_name, 8);
+ memcpy( &temp_ws_name, p_env->adapter_name , 8);
+ printk(KERN_INFO "%s: CLAW device %.8s: "
+ "Received Control Packet\n",
+ dev->name, temp_ws_name);
+ if (privptr->release_pend==1) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() > "
+ "exit on line %d, rc=0\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return 0;
+ }
+ p_buf=p_ccw->p_buffer;
+ p_ctlbk=&ctlbk;
+ if (p_env->packing == DO_PACKED) { /* packing in progress?*/
+ memcpy(p_ctlbk, &p_buf->buffer[4], sizeof(struct clawctl));
+ } else {
+ memcpy(p_ctlbk, p_buf, sizeof(struct clawctl));
+ }
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: dump claw control data inbound\n",dev->name);
+ dumpit((char *)p_ctlbk, sizeof(struct clawctl));
+#endif
+ switch (p_ctlbk->command)
+ {
+ case SYSTEM_VALIDATE_REQUEST:
+ if (p_ctlbk->version!=CLAW_VERSION_ID) {
+ claw_snd_sys_validate_rsp(dev, p_ctlbk,
+ CLAW_RC_WRONG_VERSION );
+ printk("%s: %d is wrong version id. "
+ "Expected %d\n",
+ dev->name, p_ctlbk->version,
+ CLAW_VERSION_ID);
+ }
+ p_sysval=(struct sysval *)&(p_ctlbk->data);
+ printk( "%s: Recv Sys Validate Request: "
+ "Vers=%d,link_id=%d,Corr=%d,WS name=%."
+ "8s,Host name=%.8s\n",
+ dev->name, p_ctlbk->version,
+ p_ctlbk->linkid,
+ p_ctlbk->correlator,
+ p_sysval->WS_name,
+ p_sysval->host_name);
+ if (0!=memcmp(temp_host_name,p_sysval->host_name,8)) {
+ claw_snd_sys_validate_rsp(dev, p_ctlbk,
+ CLAW_RC_NAME_MISMATCH );
+ CLAW_DBF_TEXT(2,setup,"HSTBAD");
+ CLAW_DBF_TEXT_(2,setup,"%s",p_sysval->host_name);
+ CLAW_DBF_TEXT_(2,setup,"%s",temp_host_name);
+ printk(KERN_INFO "%s: Host name mismatch\n",
+ dev->name);
+ printk(KERN_INFO "%s: Received :%s: "
+ "expected :%s: \n",
+ dev->name,
+ p_sysval->host_name,
+ temp_host_name);
+ }
+ if (0!=memcmp(temp_ws_name,p_sysval->WS_name,8)) {
+ claw_snd_sys_validate_rsp(dev, p_ctlbk,
+ CLAW_RC_NAME_MISMATCH );
+ CLAW_DBF_TEXT(2,setup,"WSNBAD");
+ CLAW_DBF_TEXT_(2,setup,"%s",p_sysval->WS_name);
+ CLAW_DBF_TEXT_(2,setup,"%s",temp_ws_name);
+ printk(KERN_INFO "%s: WS name mismatch\n",
+ dev->name);
+ printk(KERN_INFO "%s: Received :%s: "
+ "expected :%s: \n",
+ dev->name,
+ p_sysval->WS_name,
+ temp_ws_name);
+ }
+ if (( p_sysval->write_frame_size < p_env->write_size) &&
+ ( p_env->packing == 0)) {
+ claw_snd_sys_validate_rsp(dev, p_ctlbk,
+ CLAW_RC_HOST_RCV_TOO_SMALL );
+ printk(KERN_INFO "%s: host write size is too "
+ "small\n", dev->name);
+ CLAW_DBF_TEXT(2,setup,"wrtszbad");
+ }
+ if (( p_sysval->read_frame_size < p_env->read_size) &&
+ ( p_env->packing == 0)) {
+ claw_snd_sys_validate_rsp(dev, p_ctlbk,
+ CLAW_RC_HOST_RCV_TOO_SMALL );
+ printk(KERN_INFO "%s: host read size is too "
+ "small\n", dev->name);
+ CLAW_DBF_TEXT(2,setup,"rdsizbad");
+ }
+ claw_snd_sys_validate_rsp(dev, p_ctlbk, 0 );
+ printk("%s: CLAW device %.8s: System validate"
+ " completed.\n",dev->name, temp_ws_name);
+ printk("%s: sys Validate Rsize:%d Wsize:%d\n",dev->name,
+ p_sysval->read_frame_size,p_sysval->write_frame_size);
+ privptr->system_validate_comp=1;
+ if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) {
+ p_env->packing = PACKING_ASK;
+ }
+ claw_strt_conn_req(dev);
+ break;
+
+ case SYSTEM_VALIDATE_RESPONSE:
+ p_sysval=(struct sysval *)&(p_ctlbk->data);
+ printk("%s: Recv Sys Validate Resp: Vers=%d,Corr=%d,RC=%d,"
+ "WS name=%.8s,Host name=%.8s\n",
+ dev->name,
+ p_ctlbk->version,
+ p_ctlbk->correlator,
+ p_ctlbk->rc,
+ p_sysval->WS_name,
+ p_sysval->host_name);
+ switch (p_ctlbk->rc)
+ {
+ case 0:
+ printk(KERN_INFO "%s: CLAW device "
+ "%.8s: System validate "
+ "completed.\n",
+ dev->name, temp_ws_name);
+ if (privptr->system_validate_comp == 0)
+ claw_strt_conn_req(dev);
+ privptr->system_validate_comp=1;
+ break;
+ case CLAW_RC_NAME_MISMATCH:
+ printk(KERN_INFO "%s: Sys Validate "
+ "Resp : Host, WS name is "
+ "mismatch\n",
+ dev->name);
+ break;
+ case CLAW_RC_WRONG_VERSION:
+ printk(KERN_INFO "%s: Sys Validate "
+ "Resp : Wrong version\n",
+ dev->name);
+ break;
+ case CLAW_RC_HOST_RCV_TOO_SMALL:
+ printk(KERN_INFO "%s: Sys Validate "
+ "Resp : bad frame size\n",
+ dev->name);
+ break;
+ default:
+ printk(KERN_INFO "%s: Sys Validate "
+ "error code=%d \n",
+ dev->name, p_ctlbk->rc );
+ break;
+ }
+ break;
+
+ case CONNECTION_REQUEST:
+ p_connect=(struct conncmd *)&(p_ctlbk->data);
+ printk(KERN_INFO "%s: Recv Conn Req: Vers=%d,link_id=%d,"
+ "Corr=%d,HOST appl=%.8s,WS appl=%.8s\n",
+ dev->name,
+ p_ctlbk->version,
+ p_ctlbk->linkid,
+ p_ctlbk->correlator,
+ p_connect->host_name,
+ p_connect->WS_name);
+ if (privptr->active_link_ID!=0 ) {
+ claw_snd_disc(dev, p_ctlbk);
+ printk(KERN_INFO "%s: Conn Req error : "
+ "already logical link is active \n",
+ dev->name);
+ }
+ if (p_ctlbk->linkid!=1 ) {
+ claw_snd_disc(dev, p_ctlbk);
+ printk(KERN_INFO "%s: Conn Req error : "
+ "req logical link id is not 1\n",
+ dev->name);
+ }
+ rc=find_link(dev,
+ p_connect->host_name, p_connect->WS_name);
+ if (rc!=0) {
+ claw_snd_disc(dev, p_ctlbk);
+ printk(KERN_INFO "%s: Conn Req error : "
+ "req appl name does not match\n",
+ dev->name);
+ }
+ claw_send_control(dev,
+ CONNECTION_CONFIRM, p_ctlbk->linkid,
+ p_ctlbk->correlator,
+ 0, p_connect->host_name,
+ p_connect->WS_name);
+ if (p_env->packing == PACKING_ASK) {
+ printk("%s: Now Pack ask\n",dev->name);
+ p_env->packing = PACK_SEND;
+ claw_snd_conn_req(dev,0);
+ }
+ printk(KERN_INFO "%s: CLAW device %.8s: Connection "
+ "completed link_id=%d.\n",
+ dev->name, temp_ws_name,
+ p_ctlbk->linkid);
+ privptr->active_link_ID=p_ctlbk->linkid;
+ p_ch=&privptr->channel[WRITE];
+ wake_up(&p_ch->wait); /* wake up claw_open ( WRITE) */
+ break;
+ case CONNECTION_RESPONSE:
+ p_connect=(struct conncmd *)&(p_ctlbk->data);
+ printk(KERN_INFO "%s: Revc Conn Resp: Vers=%d,link_id=%d,"
+ "Corr=%d,RC=%d,Host appl=%.8s, WS appl=%.8s\n",
+ dev->name,
+ p_ctlbk->version,
+ p_ctlbk->linkid,
+ p_ctlbk->correlator,
+ p_ctlbk->rc,
+ p_connect->host_name,
+ p_connect->WS_name);
+
+ if (p_ctlbk->rc !=0 ) {
+ printk(KERN_INFO "%s: Conn Resp error: rc=%d \n",
+ dev->name, p_ctlbk->rc);
+ return 1;
+ }
+ rc=find_link(dev,
+ p_connect->host_name, p_connect->WS_name);
+ if (rc!=0) {
+ claw_snd_disc(dev, p_ctlbk);
+ printk(KERN_INFO "%s: Conn Resp error: "
+ "req appl name does not match\n",
+ dev->name);
+ }
+ /* should be until CONNECTION_CONFIRM */
+ privptr->active_link_ID = - (p_ctlbk->linkid);
+ break;
+ case CONNECTION_CONFIRM:
+ p_connect=(struct conncmd *)&(p_ctlbk->data);
+ printk(KERN_INFO "%s: Recv Conn Confirm:Vers=%d,link_id=%d,"
+ "Corr=%d,Host appl=%.8s,WS appl=%.8s\n",
+ dev->name,
+ p_ctlbk->version,
+ p_ctlbk->linkid,
+ p_ctlbk->correlator,
+ p_connect->host_name,
+ p_connect->WS_name);
+ if (p_ctlbk->linkid== -(privptr->active_link_ID)) {
+ privptr->active_link_ID=p_ctlbk->linkid;
+ if (p_env->packing > PACKING_ASK) {
+ printk(KERN_INFO "%s: Confirmed Now packing\n",dev->name);
+ p_env->packing = DO_PACKED;
+ }
+ p_ch=&privptr->channel[WRITE];
+ wake_up(&p_ch->wait);
+ }
+ else {
+ printk(KERN_INFO "%s: Conn confirm: "
+ "unexpected linkid=%d \n",
+ dev->name, p_ctlbk->linkid);
+ claw_snd_disc(dev, p_ctlbk);
+ }
+ break;
+ case DISCONNECT:
+ printk(KERN_INFO "%s: Disconnect: "
+ "Vers=%d,link_id=%d,Corr=%d\n",
+ dev->name, p_ctlbk->version,
+ p_ctlbk->linkid, p_ctlbk->correlator);
+ if ((p_ctlbk->linkid == 2) &&
+ (p_env->packing == PACK_SEND)) {
+ privptr->active_link_ID = 1;
+ p_env->packing = DO_PACKED;
+ }
+ else
+ privptr->active_link_ID=0;
+ break;
+ case CLAW_ERROR:
+ printk(KERN_INFO "%s: CLAW ERROR detected\n",
+ dev->name);
+ break;
+ default:
+ printk(KERN_INFO "%s: Unexpected command code=%d \n",
+ dev->name, p_ctlbk->command);
+ break;
+ }
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s() exit on line %d, rc = 0\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+
+ return 0;
+} /* end of claw_process_control */
+
+
+/*-------------------------------------------------------------------*
+* claw_send_control *
+* *
+*--------------------------------------------------------------------*/
+
+static int
+claw_send_control(struct net_device *dev, __u8 type, __u8 link,
+ __u8 correlator, __u8 rc, char *local_name, char *remote_name)
+{
+ struct claw_privbk *privptr;
+ struct clawctl *p_ctl;
+ struct sysval *p_sysval;
+ struct conncmd *p_connect;
+ struct sk_buff *skb;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s > enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"sndcntl");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: Sending Control Packet \n",dev->name);
+ printk(KERN_INFO "%s: variable type = 0x%X, link = "
+ "%d, correlator = %d, rc = %d\n",
+ dev->name,type, link, correlator, rc);
+ printk(KERN_INFO "%s: variable local_name = %s, "
+ "remote_name = %s\n",dev->name, local_name, remote_name);
+#endif
+ privptr=dev->priv;
+ p_ctl=(struct clawctl *)&privptr->ctl_bk;
+
+ p_ctl->command=type;
+ p_ctl->version=CLAW_VERSION_ID;
+ p_ctl->linkid=link;
+ p_ctl->correlator=correlator;
+ p_ctl->rc=rc;
+
+ p_sysval=(struct sysval *)&p_ctl->data;
+ p_connect=(struct conncmd *)&p_ctl->data;
+
+ switch (p_ctl->command) {
+ case SYSTEM_VALIDATE_REQUEST:
+ case SYSTEM_VALIDATE_RESPONSE:
+ memcpy(&p_sysval->host_name, local_name, 8);
+ memcpy(&p_sysval->WS_name, remote_name, 8);
+ if (privptr->p_env->packing > 0) {
+ p_sysval->read_frame_size=DEF_PACK_BUFSIZE;
+ p_sysval->write_frame_size=DEF_PACK_BUFSIZE;
+ } else {
+ /* how big is the piggest group of packets */
+ p_sysval->read_frame_size=privptr->p_env->read_size;
+ p_sysval->write_frame_size=privptr->p_env->write_size;
+ }
+ memset(&p_sysval->reserved, 0x00, 4);
+ break;
+ case CONNECTION_REQUEST:
+ case CONNECTION_RESPONSE:
+ case CONNECTION_CONFIRM:
+ case DISCONNECT:
+ memcpy(&p_sysval->host_name, local_name, 8);
+ memcpy(&p_sysval->WS_name, remote_name, 8);
+ if (privptr->p_env->packing > 0) {
+ /* How big is the biggest packet */
+ p_connect->reserved1[0]=CLAW_FRAME_SIZE;
+ p_connect->reserved1[1]=CLAW_FRAME_SIZE;
+ } else {
+ memset(&p_connect->reserved1, 0x00, 4);
+ memset(&p_connect->reserved2, 0x00, 4);
+ }
+ break;
+ default:
+ break;
+ }
+
+ /* write Control Record to the device */
+
+
+ skb = dev_alloc_skb(sizeof(struct clawctl));
+ if (!skb) {
+ printk( "%s:%s low on mem, returning...\n",
+ dev->name,__FUNCTION__);
+#ifdef DEBUG
+ printk(KERN_INFO "%s:%s Exit, rc = ENOMEM\n",
+ dev->name,__FUNCTION__);
+#endif
+ return -ENOMEM;
+ }
+ memcpy(skb_put(skb, sizeof(struct clawctl)),
+ p_ctl, sizeof(struct clawctl));
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: outbnd claw cntl data \n",dev->name);
+ dumpit((char *)p_ctl,sizeof(struct clawctl));
+#endif
+ if (privptr->p_env->packing >= PACK_SEND)
+ claw_hw_tx(skb, dev, 1);
+ else
+ claw_hw_tx(skb, dev, 0);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+
+ return 0;
+} /* end of claw_send_control */
+
+/*-------------------------------------------------------------------*
+* claw_snd_conn_req *
+* *
+*--------------------------------------------------------------------*/
+static int
+claw_snd_conn_req(struct net_device *dev, __u8 link)
+{
+ int rc;
+ struct claw_privbk *privptr=dev->priv;
+ struct clawctl *p_ctl;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"snd_conn");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable link = %X, dev =\n",dev->name, link);
+ dumpit((char *) dev, sizeof(struct net_device));
+#endif
+ rc = 1;
+ p_ctl=(struct clawctl *)&privptr->ctl_bk;
+ p_ctl->linkid = link;
+ if ( privptr->system_validate_comp==0x00 ) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc = 1\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return rc;
+ }
+ if (privptr->p_env->packing == PACKING_ASK )
+ rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0,
+ WS_APPL_NAME_PACKED, WS_APPL_NAME_PACKED);
+ if (privptr->p_env->packing == PACK_SEND) {
+ rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0,
+ WS_APPL_NAME_IP_NAME, WS_APPL_NAME_IP_NAME);
+ }
+ if (privptr->p_env->packing == 0)
+ rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0,
+ HOST_APPL_NAME, privptr->p_env->api_type);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n",
+ dev->name,__FUNCTION__,__LINE__, rc);
+#endif
+ return rc;
+
+} /* end of claw_snd_conn_req */
+
+
+/*-------------------------------------------------------------------*
+* claw_snd_disc *
+* *
+*--------------------------------------------------------------------*/
+
+static int
+claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl)
+{
+ int rc;
+ struct conncmd * p_connect;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"snd_dsc");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "%s: variable p_ctl",dev->name);
+ dumpit((char *) p_ctl, sizeof(struct clawctl));
+#endif
+ p_connect=(struct conncmd *)&p_ctl->data;
+
+ rc=claw_send_control(dev, DISCONNECT, p_ctl->linkid,
+ p_ctl->correlator, 0,
+ p_connect->host_name, p_connect->WS_name);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n",
+ dev->name,__FUNCTION__, __LINE__, rc);
+#endif
+ return rc;
+} /* end of claw_snd_disc */
+
+
+/*-------------------------------------------------------------------*
+* claw_snd_sys_validate_rsp *
+* *
+*--------------------------------------------------------------------*/
+
+static int
+claw_snd_sys_validate_rsp(struct net_device *dev,
+ struct clawctl *p_ctl, __u32 return_code)
+{
+ struct claw_env * p_env;
+ struct claw_privbk *privptr;
+ int rc;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",
+ dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"chkresp");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable return_code = %d, dev =\n",
+ dev->name, return_code);
+ dumpit((char *) dev, sizeof(struct net_device));
+ printk(KERN_INFO "%s: variable p_ctl =\n",dev->name);
+ dumpit((char *) p_ctl, sizeof(struct clawctl));
+#endif
+ privptr = dev->priv;
+ p_env=privptr->p_env;
+ rc=claw_send_control(dev, SYSTEM_VALIDATE_RESPONSE,
+ p_ctl->linkid,
+ p_ctl->correlator,
+ return_code,
+ p_env->host_name,
+ p_env->adapter_name );
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n",
+ dev->name,__FUNCTION__,__LINE__, rc);
+#endif
+ return rc;
+} /* end of claw_snd_sys_validate_rsp */
+
+/*-------------------------------------------------------------------*
+* claw_strt_conn_req *
+* *
+*--------------------------------------------------------------------*/
+
+static int
+claw_strt_conn_req(struct net_device *dev )
+{
+ int rc;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"conn_req");
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: variable dev =\n",dev->name);
+ dumpit((char *) dev, sizeof(struct net_device));
+#endif
+ rc=claw_snd_conn_req(dev, 1);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n",
+ dev->name,__FUNCTION__,__LINE__, rc);
+#endif
+ return rc;
+} /* end of claw_strt_conn_req */
+
+
+
+/*-------------------------------------------------------------------*
+ * claw_stats *
+ *-------------------------------------------------------------------*/
+
+static struct
+net_device_stats *claw_stats(struct net_device *dev)
+{
+ struct claw_privbk *privptr;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"stats");
+ privptr = dev->priv;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return &privptr->stats;
+} /* end of claw_stats */
+
+
+/*-------------------------------------------------------------------*
+* unpack_read *
+* *
+*--------------------------------------------------------------------*/
+static void
+unpack_read(struct net_device *dev )
+{
+ struct sk_buff *skb;
+ struct claw_privbk *privptr;
+ struct claw_env *p_env;
+ struct ccwbk *p_this_ccw;
+ struct ccwbk *p_first_ccw;
+ struct ccwbk *p_last_ccw;
+ struct clawph *p_packh;
+ void *p_packd;
+ struct clawctl *p_ctlrec=NULL;
+
+ __u32 len_of_data;
+ __u32 pack_off;
+ __u8 link_num;
+ __u8 mtc_this_frm=0;
+ __u32 bytes_to_mov;
+ struct chbk *p_ch = NULL;
+ int i=0;
+ int p=0;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s enter \n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"unpkread");
+ p_first_ccw=NULL;
+ p_last_ccw=NULL;
+ p_packh=NULL;
+ p_packd=NULL;
+ privptr=dev->priv;
+ p_env = privptr->p_env;
+ p_this_ccw=privptr->p_read_active_first;
+ i=0;
+ while (p_this_ccw!=NULL && p_this_ccw->header.flag!=CLAW_PENDING) {
+#ifdef IOTRACE
+ printk(KERN_INFO "%s p_this_ccw \n",dev->name);
+ dumpit((char*)p_this_ccw, sizeof(struct ccwbk));
+ printk(KERN_INFO "%s Inbound p_this_ccw->p_buffer(64)"
+ " pk=%d \n",dev->name,p_env->packing);
+ dumpit((char *)p_this_ccw->p_buffer, 64 );
+#endif
+ pack_off = 0;
+ p = 0;
+ p_this_ccw->header.flag=CLAW_PENDING;
+ privptr->p_read_active_first=p_this_ccw->next;
+ p_this_ccw->next=NULL;
+ p_packh = (struct clawph *)p_this_ccw->p_buffer;
+ if ((p_env->packing == PACK_SEND) &&
+ (p_packh->len == 32) &&
+ (p_packh->link_num == 0)) { /* is it a packed ctl rec? */
+ p_packh++; /* peek past pack header */
+ p_ctlrec = (struct clawctl *)p_packh;
+ p_packh--; /* un peek */
+ if ((p_ctlrec->command == CONNECTION_RESPONSE) ||
+ (p_ctlrec->command == CONNECTION_CONFIRM))
+ p_env->packing = DO_PACKED;
+ }
+ if (p_env->packing == DO_PACKED)
+ link_num=p_packh->link_num;
+ else
+ link_num=p_this_ccw->header.opcode / 8;
+ if ((p_this_ccw->header.opcode & MORE_to_COME_FLAG)!=0) {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s > More_to_come is ON\n",
+ dev->name,__FUNCTION__);
+#endif
+ mtc_this_frm=1;
+ if (p_this_ccw->header.length!=
+ privptr->p_env->read_size ) {
+ printk(KERN_INFO " %s: Invalid frame detected "
+ "length is %02x\n" ,
+ dev->name, p_this_ccw->header.length);
+ }
+ }
+
+ if (privptr->mtc_skipping) {
+ /*
+ * We're in the mode of skipping past a
+ * multi-frame message
+ * that we can't process for some reason or other.
+ * The first frame without the More-To-Come flag is
+ * the last frame of the skipped message.
+ */
+ /* in case of More-To-Come not set in this frame */
+ if (mtc_this_frm==0) {
+ privptr->mtc_skipping=0; /* Ok, the end */
+ privptr->mtc_logical_link=-1;
+ }
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s goto next "
+ "frame from MoretoComeSkip \n",
+ dev->name,__FUNCTION__);
+#endif
+ goto NextFrame;
+ }
+
+ if (link_num==0) {
+ claw_process_control(dev, p_this_ccw);
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s goto next "
+ "frame from claw_process_control \n",
+ dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"UnpkCntl");
+ goto NextFrame;
+ }
+unpack_next:
+ if (p_env->packing == DO_PACKED) {
+ if (pack_off > p_env->read_size)
+ goto NextFrame;
+ p_packd = p_this_ccw->p_buffer+pack_off;
+ p_packh = (struct clawph *) p_packd;
+ if ((p_packh->len == 0) || /* all done with this frame? */
+ (p_packh->flag != 0))
+ goto NextFrame;
+ bytes_to_mov = p_packh->len;
+ pack_off += bytes_to_mov+sizeof(struct clawph);
+ p++;
+ } else {
+ bytes_to_mov=p_this_ccw->header.length;
+ }
+ if (privptr->mtc_logical_link<0) {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s mtc_logical_link < 0 \n",
+ dev->name,__FUNCTION__);
+#endif
+
+ /*
+ * if More-To-Come is set in this frame then we don't know
+ * length of entire message, and hence have to allocate
+ * large buffer */
+
+ /* We are starting a new envelope */
+ privptr->mtc_offset=0;
+ privptr->mtc_logical_link=link_num;
+ }
+
+ if (bytes_to_mov > (MAX_ENVELOPE_SIZE- privptr->mtc_offset) ) {
+ /* error */
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s > goto next "
+ "frame from MoretoComeSkip \n",
+ dev->name,
+ __FUNCTION__);
+ printk(KERN_INFO " bytes_to_mov %d > (MAX_ENVELOPE_"
+ "SIZE-privptr->mtc_offset %d)\n",
+ bytes_to_mov,(MAX_ENVELOPE_SIZE- privptr->mtc_offset));
+#endif
+ privptr->stats.rx_frame_errors++;
+ goto NextFrame;
+ }
+ if (p_env->packing == DO_PACKED) {
+ memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset,
+ p_packd+sizeof(struct clawph), bytes_to_mov);
+
+ } else {
+ memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset,
+ p_this_ccw->p_buffer, bytes_to_mov);
+ }
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() received data \n",
+ dev->name,__FUNCTION__);
+ if (p_env->packing == DO_PACKED)
+ dumpit((char *)p_packd+sizeof(struct clawph),32);
+ else
+ dumpit((char *)p_this_ccw->p_buffer, 32);
+ printk(KERN_INFO "%s: %s() bytelength %d \n",
+ dev->name,__FUNCTION__,bytes_to_mov);
+#endif
+ if (mtc_this_frm==0) {
+ len_of_data=privptr->mtc_offset+bytes_to_mov;
+ skb=dev_alloc_skb(len_of_data);
+ if (skb) {
+ memcpy(skb_put(skb,len_of_data),
+ privptr->p_mtc_envelope,
+ len_of_data);
+ skb->mac.raw=skb->data;
+ skb->dev=dev;
+ skb->protocol=htons(ETH_P_IP);
+ skb->ip_summed=CHECKSUM_UNNECESSARY;
+ privptr->stats.rx_packets++;
+ privptr->stats.rx_bytes+=len_of_data;
+ netif_rx(skb);
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: %s() netif_"
+ "rx(skb) completed \n",
+ dev->name,__FUNCTION__);
+#endif
+ }
+ else {
+ privptr->stats.rx_dropped++;
+ printk(KERN_WARNING "%s: %s() low on memory\n",
+ dev->name,__FUNCTION__);
+ }
+ privptr->mtc_offset=0;
+ privptr->mtc_logical_link=-1;
+ }
+ else {
+ privptr->mtc_offset+=bytes_to_mov;
+ }
+ if (p_env->packing == DO_PACKED)
+ goto unpack_next;
+NextFrame:
+ /*
+ * Remove ThisCCWblock from active read queue, and add it
+ * to queue of free blocks to be reused.
+ */
+ i++;
+ p_this_ccw->header.length=0xffff;
+ p_this_ccw->header.opcode=0xff;
+ /*
+ * add this one to the free queue for later reuse
+ */
+ if (p_first_ccw==NULL) {
+ p_first_ccw = p_this_ccw;
+ }
+ else {
+ p_last_ccw->next = p_this_ccw;
+ }
+ p_last_ccw = p_this_ccw;
+ /*
+ * chain to next block on active read queue
+ */
+ p_this_ccw = privptr->p_read_active_first;
+ CLAW_DBF_TEXT_(4,trace,"rxpkt %d",p);
+ } /* end of while */
+
+ /* check validity */
+
+#ifdef IOTRACE
+ printk(KERN_INFO "%s:%s processed frame is %d \n",
+ dev->name,__FUNCTION__,i);
+ printk(KERN_INFO "%s:%s F:%lx L:%lx\n",
+ dev->name,
+ __FUNCTION__,
+ (unsigned long)p_first_ccw,
+ (unsigned long)p_last_ccw);
+#endif
+ CLAW_DBF_TEXT_(4,trace,"rxfrm %d",i);
+ add_claw_reads(dev, p_first_ccw, p_last_ccw);
+ p_ch=&privptr->channel[READ];
+ claw_strt_read(dev, LOCK_YES);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s: %s exit on line %d\n",
+ dev->name, __FUNCTION__, __LINE__);
+#endif
+ return;
+} /* end of unpack_read */
+
+/*-------------------------------------------------------------------*
+* claw_strt_read *
+* *
+*--------------------------------------------------------------------*/
+static void
+claw_strt_read (struct net_device *dev, int lock )
+{
+ int rc = 0;
+ __u32 parm;
+ unsigned long saveflags = 0;
+ struct claw_privbk *privptr=dev->priv;
+ struct ccwbk*p_ccwbk;
+ struct chbk *p_ch;
+ struct clawh *p_clawh;
+ p_ch=&privptr->channel[READ];
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__);
+ printk(KERN_INFO "%s: variable lock = %d, dev =\n",dev->name, lock);
+ dumpit((char *) dev, sizeof(struct net_device));
+#endif
+ CLAW_DBF_TEXT(4,trace,"StRdNter");
+ p_clawh=(struct clawh *)privptr->p_claw_signal_blk;
+ p_clawh->flag=CLAW_IDLE; /* 0x00 */
+
+ if ((privptr->p_write_active_first!=NULL &&
+ privptr->p_write_active_first->header.flag!=CLAW_PENDING) ||
+ (privptr->p_read_active_first!=NULL &&
+ privptr->p_read_active_first->header.flag!=CLAW_PENDING )) {
+ p_clawh->flag=CLAW_BUSY; /* 0xff */
+ }
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s state-%02x\n" ,
+ dev->name,__FUNCTION__, p_ch->claw_state);
+#endif
+ if (lock==LOCK_YES) {
+ spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags);
+ }
+ if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: HOT READ started in %s\n" ,
+ dev->name,__FUNCTION__);
+ p_clawh=(struct clawh *)privptr->p_claw_signal_blk;
+ dumpit((char *)&p_clawh->flag , 1);
+#endif
+ CLAW_DBF_TEXT(4,trace,"HotRead");
+ p_ccwbk=privptr->p_read_active_first;
+ parm = (unsigned long) p_ch;
+ rc = ccw_device_start (p_ch->cdev, &p_ccwbk->read, parm,
+ 0xff, 0);
+ if (rc != 0) {
+ ccw_check_return_code(p_ch->cdev, rc);
+ }
+ }
+ else {
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s: No READ started by %s() In progress\n" ,
+ dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,trace,"ReadAct");
+ }
+
+ if (lock==LOCK_YES) {
+ spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags);
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ CLAW_DBF_TEXT(4,trace,"StRdExit");
+ return;
+} /* end of claw_strt_read */
+
+/*-------------------------------------------------------------------*
+* claw_strt_out_IO *
+* *
+*--------------------------------------------------------------------*/
+
+static void
+claw_strt_out_IO( struct net_device *dev )
+{
+ int rc = 0;
+ unsigned long parm;
+ struct claw_privbk *privptr;
+ struct chbk *p_ch;
+ struct ccwbk *p_first_ccw;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+#endif
+ if (!dev) {
+ return;
+ }
+ privptr=(struct claw_privbk *)dev->priv;
+ p_ch=&privptr->channel[WRITE];
+
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s state-%02x\n" ,
+ dev->name,__FUNCTION__,p_ch->claw_state);
+#endif
+ CLAW_DBF_TEXT(4,trace,"strt_io");
+ p_first_ccw=privptr->p_write_active_first;
+
+ if (p_ch->claw_state == CLAW_STOP)
+ return;
+ if (p_first_ccw == NULL) {
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+ return;
+ }
+ if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) {
+ parm = (unsigned long) p_ch;
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s do_io \n" ,dev->name,__FUNCTION__);
+ dumpit((char *)p_first_ccw, sizeof(struct ccwbk));
+#endif
+ CLAW_DBF_TEXT(2,trace,"StWrtIO");
+ rc = ccw_device_start (p_ch->cdev,&p_first_ccw->write, parm,
+ 0xff, 0);
+ if (rc != 0) {
+ ccw_check_return_code(p_ch->cdev, rc);
+ }
+ }
+ dev->trans_start = jiffies;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ dev->name,__FUNCTION__,__LINE__);
+#endif
+
+ return;
+} /* end of claw_strt_out_IO */
+
+/*-------------------------------------------------------------------*
+* Free write buffers *
+* *
+*--------------------------------------------------------------------*/
+
+static void
+claw_free_wrt_buf( struct net_device *dev )
+{
+
+ struct claw_privbk *privptr=(struct claw_privbk *)dev->priv;
+ struct ccwbk*p_first_ccw;
+ struct ccwbk*p_last_ccw;
+ struct ccwbk*p_this_ccw;
+ struct ccwbk*p_next_ccw;
+#ifdef IOTRACE
+ struct ccwbk*p_buf;
+#endif
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+ printk(KERN_INFO "%s: free count = %d variable dev =\n",
+ dev->name,privptr->write_free_count);
+#endif
+ CLAW_DBF_TEXT(4,trace,"freewrtb");
+ /* scan the write queue to free any completed write packets */
+ p_first_ccw=NULL;
+ p_last_ccw=NULL;
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: Dump current CCW chain \n",dev->name );
+ p_buf=privptr->p_write_active_first;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+ if (p_buf==NULL) {
+ printk(KERN_INFO "%s: privptr->p_write_"
+ "active_first==NULL\n",dev->name );
+ }
+ p_buf=(struct ccwbk*)privptr->p_end_ccw;
+ dumpit((char *)p_buf, sizeof(struct endccw));
+#endif
+ p_this_ccw=privptr->p_write_active_first;
+ while ( (p_this_ccw!=NULL) && (p_this_ccw->header.flag!=CLAW_PENDING))
+ {
+ p_next_ccw = p_this_ccw->next;
+ if (((p_next_ccw!=NULL) &&
+ (p_next_ccw->header.flag!=CLAW_PENDING)) ||
+ ((p_this_ccw == privptr->p_write_active_last) &&
+ (p_this_ccw->header.flag!=CLAW_PENDING))) {
+ /* The next CCW is OK or this is */
+ /* the last CCW...free it @A1A */
+ privptr->p_write_active_first=p_this_ccw->next;
+ p_this_ccw->header.flag=CLAW_PENDING;
+ p_this_ccw->next=privptr->p_write_free_chain;
+ privptr->p_write_free_chain=p_this_ccw;
+ ++privptr->write_free_count;
+ privptr->stats.tx_bytes+= p_this_ccw->write.count;
+ p_this_ccw=privptr->p_write_active_first;
+ privptr->stats.tx_packets++;
+ }
+ else {
+ break;
+ }
+ }
+ if (privptr->write_free_count!=0) {
+ claw_clearbit_busy(TB_NOBUFFER,dev);
+ }
+ /* whole chain removed? */
+ if (privptr->p_write_active_first==NULL) {
+ privptr->p_write_active_last=NULL;
+#ifdef DEBUGMSG
+ printk(KERN_INFO "%s:%s p_write_"
+ "active_first==NULL\n",dev->name,__FUNCTION__);
+#endif
+ }
+#ifdef IOTRACE
+ printk(KERN_INFO "%s: Dump arranged CCW chain \n",dev->name );
+ p_buf=privptr->p_write_active_first;
+ while (p_buf!=NULL) {
+ dumpit((char *)p_buf, sizeof(struct ccwbk));
+ p_buf=p_buf->next;
+ }
+ if (p_buf==NULL) {
+ printk(KERN_INFO "%s: privptr->p_write_active_"
+ "first==NULL\n",dev->name );
+ }
+ p_buf=(struct ccwbk*)privptr->p_end_ccw;
+ dumpit((char *)p_buf, sizeof(struct endccw));
+#endif
+
+ CLAW_DBF_TEXT_(4,trace,"FWC=%d",privptr->write_free_count);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d free_count =%d\n",
+ dev->name,__FUNCTION__, __LINE__,privptr->write_free_count);
+#endif
+ return;
+}
+
+/*-------------------------------------------------------------------*
+* claw free netdevice *
+* *
+*--------------------------------------------------------------------*/
+static void
+claw_free_netdevice(struct net_device * dev, int free_dev)
+{
+ struct claw_privbk *privptr;
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"free_dev");
+
+ if (!dev)
+ return;
+ CLAW_DBF_TEXT_(2,setup,"%s",dev->name);
+ privptr = dev->priv;
+ if (dev->flags & IFF_RUNNING)
+ claw_release(dev);
+ if (privptr) {
+ privptr->channel[READ].ndev = NULL; /* say it's free */
+ }
+ dev->priv=NULL;
+#ifdef MODULE
+ if (free_dev) {
+ free_netdev(dev);
+ }
+#endif
+ CLAW_DBF_TEXT(2,setup,"feee_ok");
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit\n",dev->name,__FUNCTION__);
+#endif
+}
+
+/**
+ * Claw init netdevice
+ * Initialize everything of the net device except the name and the
+ * channel structs.
+ */
+static void
+claw_init_netdevice(struct net_device * dev)
+{
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"init_dev");
+ CLAW_DBF_TEXT_(2,setup,"%s",dev->name);
+ if (!dev) {
+ printk(KERN_WARNING "claw:%s BAD Device exit line %d\n",
+ __FUNCTION__,__LINE__);
+ CLAW_DBF_TEXT(2,setup,"baddev");
+ return;
+ }
+ dev->mtu = CLAW_DEFAULT_MTU_SIZE;
+ dev->hard_start_xmit = claw_tx;
+ dev->open = claw_open;
+ dev->stop = claw_release;
+ dev->get_stats = claw_stats;
+ dev->change_mtu = claw_change_mtu;
+ dev->hard_header_len = 0;
+ dev->addr_len = 0;
+ dev->type = ARPHRD_SLIP;
+ dev->tx_queue_len = 1300;
+ dev->flags = IFF_POINTOPOINT | IFF_NOARP;
+ SET_MODULE_OWNER(dev);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit\n",dev->name,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT(2,setup,"initok");
+ return;
+}
+
+/**
+ * Init a new channel in the privptr->channel[i].
+ *
+ * @param cdev The ccw_device to be added.
+ *
+ * @return 0 on success, !0 on error.
+ */
+static int
+add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr)
+{
+ struct chbk *p_ch;
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Enter\n",cdev->dev.bus_id,__FUNCTION__);
+#endif
+ CLAW_DBF_TEXT_(2,setup,"%s",cdev->dev.bus_id);
+ privptr->channel[i].flag = i+1; /* Read is 1 Write is 2 */
+ p_ch = &privptr->channel[i];
+ p_ch->cdev = cdev;
+ snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", cdev->dev.bus_id);
+ sscanf(cdev->dev.bus_id+4,"%x",&p_ch->devno);
+ if ((p_ch->irb = kmalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) {
+ printk(KERN_WARNING "%s Out of memory in %s for irb\n",
+ p_ch->id,__FUNCTION__);
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ p_ch->id,__FUNCTION__,__LINE__);
+#endif
+ return -ENOMEM;
+ }
+ memset(p_ch->irb, 0, sizeof (struct irb));
+#ifdef FUNCTRACE
+ printk(KERN_INFO "%s:%s Exit on line %d\n",
+ cdev->dev.bus_id,__FUNCTION__,__LINE__);
+#endif
+ return 0;
+}
+
+
+/**
+ *
+ * Setup an interface.
+ *
+ * @param cgdev Device to be setup.
+ *
+ * @returns 0 on success, !0 on failure.
+ */
+static int
+claw_new_device(struct ccwgroup_device *cgdev)
+{
+ struct claw_privbk *privptr;
+ struct claw_env *p_env;
+ struct net_device *dev;
+ int ret;
+
+ pr_debug("%s() called\n", __FUNCTION__);
+ printk(KERN_INFO "claw: add for %s\n",cgdev->cdev[READ]->dev.bus_id);
+ CLAW_DBF_TEXT(2,setup,"new_dev");
+ privptr = cgdev->dev.driver_data;
+ cgdev->cdev[READ]->dev.driver_data = privptr;
+ cgdev->cdev[WRITE]->dev.driver_data = privptr;
+ if (!privptr)
+ return -ENODEV;
+ p_env = privptr->p_env;
+ sscanf(cgdev->cdev[READ]->dev.bus_id+4,"%x",
+ &p_env->devno[READ]);
+ sscanf(cgdev->cdev[WRITE]->dev.bus_id+4,"%x",
+ &p_env->devno[WRITE]);
+ ret = add_channel(cgdev->cdev[0],0,privptr);
+ if (ret == 0)
+ ret = add_channel(cgdev->cdev[1],1,privptr);
+ if (ret != 0) {
+ printk(KERN_WARNING
+ "add channel failed "
+ "with ret = %d\n", ret);
+ goto out;
+ }
+ ret = ccw_device_set_online(cgdev->cdev[READ]);
+ if (ret != 0) {
+ printk(KERN_WARNING
+ "claw: ccw_device_set_online %s READ failed "
+ "with ret = %d\n",cgdev->cdev[READ]->dev.bus_id,ret);
+ goto out;
+ }
+ ret = ccw_device_set_online(cgdev->cdev[WRITE]);
+ if (ret != 0) {
+ printk(KERN_WARNING
+ "claw: ccw_device_set_online %s WRITE failed "
+ "with ret = %d\n",cgdev->cdev[WRITE]->dev.bus_id, ret);
+ goto out;
+ }
+ dev = alloc_netdev(0,"claw%d",claw_init_netdevice);
+ if (!dev) {
+ printk(KERN_WARNING "%s:alloc_netdev failed\n",__FUNCTION__);
+ goto out;
+ }
+ dev->priv = privptr;
+ cgdev->dev.driver_data = privptr;
+ cgdev->cdev[READ]->dev.driver_data = privptr;
+ cgdev->cdev[WRITE]->dev.driver_data = privptr;
+ /* sysfs magic */
+ SET_NETDEV_DEV(dev, &cgdev->dev);
+ if (register_netdev(dev) != 0) {
+ claw_free_netdevice(dev, 1);
+ CLAW_DBF_TEXT(2,trace,"regfail");
+ goto out;
+ }
+ dev->flags &=~IFF_RUNNING;
+ if (privptr->buffs_alloc == 0) {
+ ret=init_ccw_bk(dev);
+ if (ret !=0) {
+ printk(KERN_WARNING
+ "claw: init_ccw_bk failed with ret=%d\n", ret);
+ unregister_netdev(dev);
+ claw_free_netdevice(dev,1);
+ CLAW_DBF_TEXT(2,trace,"ccwmem");
+ goto out;
+ }
+ }
+ privptr->channel[READ].ndev = dev;
+ privptr->channel[WRITE].ndev = dev;
+ privptr->p_env->ndev = dev;
+
+ printk(KERN_INFO "%s:readsize=%d writesize=%d "
+ "readbuffer=%d writebuffer=%d read=0x%04x write=0x%04x\n",
+ dev->name, p_env->read_size,
+ p_env->write_size, p_env->read_buffers,
+ p_env->write_buffers, p_env->devno[READ],
+ p_env->devno[WRITE]);
+ printk(KERN_INFO "%s:host_name:%.8s, adapter_name "
+ ":%.8s api_type: %.8s\n",
+ dev->name, p_env->host_name,
+ p_env->adapter_name , p_env->api_type);
+ return 0;
+out:
+ ccw_device_set_offline(cgdev->cdev[1]);
+ ccw_device_set_offline(cgdev->cdev[0]);
+
+ return -ENODEV;
+}
+
+static void
+claw_purge_skb_queue(struct sk_buff_head *q)
+{
+ struct sk_buff *skb;
+
+ CLAW_DBF_TEXT(4,trace,"purgque");
+
+ while ((skb = skb_dequeue(q))) {
+ atomic_dec(&skb->users);
+ dev_kfree_skb_irq(skb);
+ }
+}
+
+/**
+ * Shutdown an interface.
+ *
+ * @param cgdev Device to be shut down.
+ *
+ * @returns 0 on success, !0 on failure.
+ */
+static int
+claw_shutdown_device(struct ccwgroup_device *cgdev)
+{
+ struct claw_privbk *priv;
+ struct net_device *ndev;
+ int ret;
+
+ pr_debug("%s() called\n", __FUNCTION__);
+ CLAW_DBF_TEXT_(2,setup,"%s",cgdev->dev.bus_id);
+ priv = cgdev->dev.driver_data;
+ if (!priv)
+ return -ENODEV;
+ ndev = priv->channel[READ].ndev;
+ if (ndev) {
+ /* Close the device */
+ printk(KERN_INFO
+ "%s: shuting down \n",ndev->name);
+ if (ndev->flags & IFF_RUNNING)
+ ret = claw_release(ndev);
+ ndev->flags &=~IFF_RUNNING;
+ unregister_netdev(ndev);
+ ndev->priv = NULL; /* cgdev data, not ndev's to free */
+ claw_free_netdevice(ndev, 1);
+ priv->channel[READ].ndev = NULL;
+ priv->channel[WRITE].ndev = NULL;
+ priv->p_env->ndev = NULL;
+ }
+ ccw_device_set_offline(cgdev->cdev[1]);
+ ccw_device_set_offline(cgdev->cdev[0]);
+ return 0;
+}
+
+static void
+claw_remove_device(struct ccwgroup_device *cgdev)
+{
+ struct claw_privbk *priv;
+
+ pr_debug("%s() called\n", __FUNCTION__);
+ CLAW_DBF_TEXT_(2,setup,"%s",cgdev->dev.bus_id);
+ priv = cgdev->dev.driver_data;
+ if (!priv) {
+ printk(KERN_WARNING "claw: %s() no Priv exiting\n",__FUNCTION__);
+ return;
+ }
+ printk(KERN_INFO "claw: %s() called %s will be removed.\n",
+ __FUNCTION__,cgdev->cdev[0]->dev.bus_id);
+ if (cgdev->state == CCWGROUP_ONLINE)
+ claw_shutdown_device(cgdev);
+ claw_remove_files(&cgdev->dev);
+ if (priv->p_mtc_envelope!=NULL) {
+ kfree(priv->p_mtc_envelope);
+ priv->p_mtc_envelope=NULL;
+ }
+ if (priv->p_env != NULL) {
+ kfree(priv->p_env);
+ priv->p_env=NULL;
+ }
+ if (priv->channel[0].irb != NULL) {
+ kfree(priv->channel[0].irb);
+ priv->channel[0].irb=NULL;
+ }
+ if (priv->channel[1].irb != NULL) {
+ kfree(priv->channel[1].irb);
+ priv->channel[1].irb=NULL;
+ }
+ kfree(priv);
+ cgdev->dev.driver_data=NULL;
+ cgdev->cdev[READ]->dev.driver_data = NULL;
+ cgdev->cdev[WRITE]->dev.driver_data = NULL;
+ put_device(&cgdev->dev);
+}
+
+
+/*
+ * sysfs attributes
+ */
+static ssize_t
+claw_hname_show(struct device *dev, char *buf)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ return sprintf(buf, "%s\n",p_env->host_name);
+}
+
+static ssize_t
+claw_hname_write(struct device *dev, const char *buf, size_t count)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ if (count > MAX_NAME_LEN+1)
+ return -EINVAL;
+ memset(p_env->host_name, 0x20, MAX_NAME_LEN);
+ strncpy(p_env->host_name,buf, count);
+ p_env->host_name[count-1] = 0x20; /* clear extra 0x0a */
+ p_env->host_name[MAX_NAME_LEN] = 0x00;
+ CLAW_DBF_TEXT(2,setup,"HstnSet");
+ CLAW_DBF_TEXT_(2,setup,"%s",p_env->host_name);
+
+ return count;
+}
+
+static DEVICE_ATTR(host_name, 0644, claw_hname_show, claw_hname_write);
+
+static ssize_t
+claw_adname_show(struct device *dev, char *buf)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ return sprintf(buf, "%s\n",p_env->adapter_name);
+}
+
+static ssize_t
+claw_adname_write(struct device *dev, const char *buf, size_t count)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ if (count > MAX_NAME_LEN+1)
+ return -EINVAL;
+ memset(p_env->adapter_name, 0x20, MAX_NAME_LEN);
+ strncpy(p_env->adapter_name,buf, count);
+ p_env->adapter_name[count-1] = 0x20; /* clear extra 0x0a */
+ p_env->adapter_name[MAX_NAME_LEN] = 0x00;
+ CLAW_DBF_TEXT(2,setup,"AdnSet");
+ CLAW_DBF_TEXT_(2,setup,"%s",p_env->adapter_name);
+
+ return count;
+}
+
+static DEVICE_ATTR(adapter_name, 0644, claw_adname_show, claw_adname_write);
+
+static ssize_t
+claw_apname_show(struct device *dev, char *buf)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ return sprintf(buf, "%s\n",
+ p_env->api_type);
+}
+
+static ssize_t
+claw_apname_write(struct device *dev, const char *buf, size_t count)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ if (count > MAX_NAME_LEN+1)
+ return -EINVAL;
+ memset(p_env->api_type, 0x20, MAX_NAME_LEN);
+ strncpy(p_env->api_type,buf, count);
+ p_env->api_type[count-1] = 0x20; /* we get a loose 0x0a */
+ p_env->api_type[MAX_NAME_LEN] = 0x00;
+ if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) {
+ p_env->read_size=DEF_PACK_BUFSIZE;
+ p_env->write_size=DEF_PACK_BUFSIZE;
+ p_env->packing=PACKING_ASK;
+ CLAW_DBF_TEXT(2,setup,"PACKING");
+ }
+ else {
+ p_env->packing=0;
+ p_env->read_size=CLAW_FRAME_SIZE;
+ p_env->write_size=CLAW_FRAME_SIZE;
+ CLAW_DBF_TEXT(2,setup,"ApiSet");
+ }
+ CLAW_DBF_TEXT_(2,setup,"%s",p_env->api_type);
+ return count;
+}
+
+static DEVICE_ATTR(api_type, 0644, claw_apname_show, claw_apname_write);
+
+static ssize_t
+claw_wbuff_show(struct device *dev, char *buf)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ return sprintf(buf, "%d\n", p_env->write_buffers);
+}
+
+static ssize_t
+claw_wbuff_write(struct device *dev, const char *buf, size_t count)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+ int nnn,max;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ sscanf(buf, "%i", &nnn);
+ if (p_env->packing) {
+ max = 64;
+ }
+ else {
+ max = 512;
+ }
+ if ((nnn > max ) || (nnn < 2))
+ return -EINVAL;
+ p_env->write_buffers = nnn;
+ CLAW_DBF_TEXT(2,setup,"Wbufset");
+ CLAW_DBF_TEXT_(2,setup,"WB=%d",p_env->write_buffers);
+ return count;
+}
+
+static DEVICE_ATTR(write_buffer, 0644, claw_wbuff_show, claw_wbuff_write);
+
+static ssize_t
+claw_rbuff_show(struct device *dev, char *buf)
+{
+ struct claw_privbk *priv;
+ struct claw_env * p_env;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ return sprintf(buf, "%d\n", p_env->read_buffers);
+}
+
+static ssize_t
+claw_rbuff_write(struct device *dev, const char *buf, size_t count)
+{
+ struct claw_privbk *priv;
+ struct claw_env *p_env;
+ int nnn,max;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ p_env = priv->p_env;
+ sscanf(buf, "%i", &nnn);
+ if (p_env->packing) {
+ max = 64;
+ }
+ else {
+ max = 512;
+ }
+ if ((nnn > max ) || (nnn < 2))
+ return -EINVAL;
+ p_env->read_buffers = nnn;
+ CLAW_DBF_TEXT(2,setup,"Rbufset");
+ CLAW_DBF_TEXT_(2,setup,"RB=%d",p_env->read_buffers);
+ return count;
+}
+
+static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write);
+
+static struct attribute *claw_attr[] = {
+ &dev_attr_read_buffer.attr,
+ &dev_attr_write_buffer.attr,
+ &dev_attr_adapter_name.attr,
+ &dev_attr_api_type.attr,
+ &dev_attr_host_name.attr,
+ NULL,
+};
+
+static struct attribute_group claw_attr_group = {
+ .attrs = claw_attr,
+};
+
+static int
+claw_add_files(struct device *dev)
+{
+ pr_debug("%s() called\n", __FUNCTION__);
+ CLAW_DBF_TEXT(2,setup,"add_file");
+ return sysfs_create_group(&dev->kobj, &claw_attr_group);
+}
+
+static void
+claw_remove_files(struct device *dev)
+{
+ pr_debug("%s() called\n", __FUNCTION__);
+ CLAW_DBF_TEXT(2,setup,"rem_file");
+ sysfs_remove_group(&dev->kobj, &claw_attr_group);
+}
+
+/*--------------------------------------------------------------------*
+* claw_init and cleanup *
+*---------------------------------------------------------------------*/
+
+static void __exit
+claw_cleanup(void)
+{
+ unregister_cu3088_discipline(&claw_group_driver);
+ claw_unregister_debug_facility();
+ printk(KERN_INFO "claw: Driver unloaded\n");
+
+}
+
+/**
+ * Initialize module.
+ * This is called just after the module is loaded.
+ *
+ * @return 0 on success, !0 on error.
+ */
+static int __init
+claw_init(void)
+{
+ int ret = 0;
+ printk(KERN_INFO "claw: starting driver "
+#ifdef MODULE
+ "module "
+#else
+ "compiled into kernel "
+#endif
+ " $Revision: 1.35 $ $Date: 2005/03/24 12:25:38 $ \n");
+
+
+#ifdef FUNCTRACE
+ printk(KERN_INFO "claw: %s() enter \n",__FUNCTION__);
+#endif
+ ret = claw_register_debug_facility();
+ if (ret) {
+ printk(KERN_WARNING "claw: %s() debug_register failed %d\n",
+ __FUNCTION__,ret);
+ return ret;
+ }
+ CLAW_DBF_TEXT(2,setup,"init_mod");
+ ret = register_cu3088_discipline(&claw_group_driver);
+ if (ret) {
+ claw_unregister_debug_facility();
+ printk(KERN_WARNING "claw; %s() cu3088 register failed %d\n",
+ __FUNCTION__,ret);
+ }
+#ifdef FUNCTRACE
+ printk(KERN_INFO "claw: %s() exit \n",__FUNCTION__);
+#endif
+ return ret;
+}
+
+module_init(claw_init);
+module_exit(claw_cleanup);
+
+
+
+/*--------------------------------------------------------------------*
+* End of File *
+*---------------------------------------------------------------------*/
+
+
diff --git a/drivers/s390/net/claw.h b/drivers/s390/net/claw.h
new file mode 100644
index 0000000..3df7197
--- /dev/null
+++ b/drivers/s390/net/claw.h
@@ -0,0 +1,335 @@
+/*******************************************************
+* Define constants *
+* *
+********************************************************/
+#define VERSION_CLAW_H "$Revision: 1.6 $"
+/*-----------------------------------------------------*
+* CCW command codes for CLAW protocol *
+*------------------------------------------------------*/
+
+#define CCW_CLAW_CMD_WRITE 0x01 /* write - not including link */
+#define CCW_CLAW_CMD_READ 0x02 /* read */
+#define CCW_CLAW_CMD_NOP 0x03 /* NOP */
+#define CCW_CLAW_CMD_SENSE 0x04 /* Sense */
+#define CCW_CLAW_CMD_SIGNAL_SMOD 0x05 /* Signal Status Modifier */
+#define CCW_CLAW_CMD_TIC 0x08 /* TIC */
+#define CCW_CLAW_CMD_READHEADER 0x12 /* read header data */
+#define CCW_CLAW_CMD_READFF 0x22 /* read an FF */
+#define CCW_CLAW_CMD_SENSEID 0xe4 /* Sense ID */
+
+
+/*-----------------------------------------------------*
+* CLAW Unique constants *
+*------------------------------------------------------*/
+
+#define MORE_to_COME_FLAG 0x04 /* OR with write CCW in case of m-t-c */
+#define CLAW_IDLE 0x00 /* flag to indicate CLAW is idle */
+#define CLAW_BUSY 0xff /* flag to indicate CLAW is busy */
+#define CLAW_PENDING 0x00 /* flag to indicate i/o is pending */
+#define CLAW_COMPLETE 0xff /* flag to indicate i/o completed */
+
+/*-----------------------------------------------------*
+* CLAW control comand code *
+*------------------------------------------------------*/
+
+#define SYSTEM_VALIDATE_REQUEST 0x01 /* System Validate request */
+#define SYSTEM_VALIDATE_RESPONSE 0x02 /* System Validate response */
+#define CONNECTION_REQUEST 0x21 /* Connection request */
+#define CONNECTION_RESPONSE 0x22 /* Connection response */
+#define CONNECTION_CONFIRM 0x23 /* Connection confirm */
+#define DISCONNECT 0x24 /* Disconnect */
+#define CLAW_ERROR 0x41 /* CLAW error message */
+#define CLAW_VERSION_ID 2 /* CLAW version ID */
+
+/*-----------------------------------------------------*
+* CLAW adater sense bytes *
+*------------------------------------------------------*/
+
+#define CLAW_ADAPTER_SENSE_BYTE 0x41 /* Stop command issued to adapter */
+
+/*-----------------------------------------------------*
+* CLAW control command return codes *
+*------------------------------------------------------*/
+
+#define CLAW_RC_NAME_MISMATCH 166 /* names do not match */
+#define CLAW_RC_WRONG_VERSION 167 /* wrong CLAW version number */
+#define CLAW_RC_HOST_RCV_TOO_SMALL 180 /* Host maximum receive is */
+ /* less than Linux on zSeries*/
+ /* transmit size */
+
+/*-----------------------------------------------------*
+* CLAW Constants application name *
+*------------------------------------------------------*/
+
+#define HOST_APPL_NAME "TCPIP "
+#define WS_APPL_NAME_IP_LINK "TCPIP "
+#define WS_APPL_NAME_IP_NAME "IP "
+#define WS_APPL_NAME_API_LINK "API "
+#define WS_APPL_NAME_PACKED "PACKED "
+#define WS_NAME_NOT_DEF "NOT_DEF "
+#define PACKING_ASK 1
+#define PACK_SEND 2
+#define DO_PACKED 3
+
+#define MAX_ENVELOPE_SIZE 65536
+#define CLAW_DEFAULT_MTU_SIZE 4096
+#define DEF_PACK_BUFSIZE 32768
+#define READ 0
+#define WRITE 1
+
+#define TB_TX 0 /* sk buffer handling in process */
+#define TB_STOP 1 /* network device stop in process */
+#define TB_RETRY 2 /* retry in process */
+#define TB_NOBUFFER 3 /* no buffer on free queue */
+#define CLAW_MAX_LINK_ID 1
+#define CLAW_MAX_DEV 256 /* max claw devices */
+#define MAX_NAME_LEN 8 /* host name, adapter name length */
+#define CLAW_FRAME_SIZE 4096
+#define CLAW_ID_SIZE BUS_ID_SIZE+3
+
+/* state machine codes used in claw_irq_handler */
+
+#define CLAW_STOP 0
+#define CLAW_START_HALT_IO 1
+#define CLAW_START_SENSEID 2
+#define CLAW_START_READ 3
+#define CLAW_START_WRITE 4
+
+/*-----------------------------------------------------*
+* Lock flag *
+*------------------------------------------------------*/
+#define LOCK_YES 0
+#define LOCK_NO 1
+
+/*-----------------------------------------------------*
+* DBF Debug macros *
+*------------------------------------------------------*/
+#define CLAW_DBF_TEXT(level, name, text) \
+ do { \
+ debug_text_event(claw_dbf_##name, level, text); \
+ } while (0)
+
+#define CLAW_DBF_HEX(level,name,addr,len) \
+do { \
+ debug_event(claw_dbf_##name,level,(void*)(addr),len); \
+} while (0)
+
+#define CLAW_DBF_TEXT_(level,name,text...) \
+do { \
+ sprintf(debug_buffer, text); \
+ debug_text_event(claw_dbf_##name,level, debug_buffer);\
+} while (0)
+
+/*******************************************************
+* Define Control Blocks *
+* *
+********************************************************/
+
+/*------------------------------------------------------*/
+/* CLAW header */
+/*------------------------------------------------------*/
+
+struct clawh {
+ __u16 length; /* length of data read by preceding read CCW */
+ __u8 opcode; /* equivalent read CCW */
+ __u8 flag; /* flag of FF to indicate read was completed */
+};
+
+/*------------------------------------------------------*/
+/* CLAW Packing header 4 bytes */
+/*------------------------------------------------------*/
+struct clawph {
+ __u16 len; /* Length of Packed Data Area */
+ __u8 flag; /* Reserved not used */
+ __u8 link_num; /* Link ID */
+};
+
+/*------------------------------------------------------*/
+/* CLAW Ending struct ccwbk */
+/*------------------------------------------------------*/
+struct endccw {
+ __u32 real; /* real address of this block */
+ __u8 write1; /* write 1 is active */
+ __u8 read1; /* read 1 is active */
+ __u16 reserved; /* reserved for future use */
+ struct ccw1 write1_nop1;
+ struct ccw1 write1_nop2;
+ struct ccw1 write2_nop1;
+ struct ccw1 write2_nop2;
+ struct ccw1 read1_nop1;
+ struct ccw1 read1_nop2;
+ struct ccw1 read2_nop1;
+ struct ccw1 read2_nop2;
+};
+
+/*------------------------------------------------------*/
+/* CLAW struct ccwbk */
+/*------------------------------------------------------*/
+struct ccwbk {
+ void *next; /* pointer to next ccw block */
+ __u32 real; /* real address of this ccw */
+ void *p_buffer; /* virtual address of data */
+ struct clawh header; /* claw header */
+ struct ccw1 write; /* write CCW */
+ struct ccw1 w_read_FF; /* read FF */
+ struct ccw1 w_TIC_1; /* TIC */
+ struct ccw1 read; /* read CCW */
+ struct ccw1 read_h; /* read header */
+ struct ccw1 signal; /* signal SMOD */
+ struct ccw1 r_TIC_1; /* TIC1 */
+ struct ccw1 r_read_FF; /* read FF */
+ struct ccw1 r_TIC_2; /* TIC2 */
+};
+
+/*------------------------------------------------------*/
+/* CLAW control block */
+/*------------------------------------------------------*/
+struct clawctl {
+ __u8 command; /* control command */
+ __u8 version; /* CLAW protocol version */
+ __u8 linkid; /* link ID */
+ __u8 correlator; /* correlator */
+ __u8 rc; /* return code */
+ __u8 reserved1; /* reserved */
+ __u8 reserved2; /* reserved */
+ __u8 reserved3; /* reserved */
+ __u8 data[24]; /* command specific fields */
+};
+
+/*------------------------------------------------------*/
+/* Data for SYSTEMVALIDATE command */
+/*------------------------------------------------------*/
+struct sysval {
+ char WS_name[8]; /* Workstation System name */
+ char host_name[8]; /* Host system name */
+ __u16 read_frame_size; /* read frame size */
+ __u16 write_frame_size; /* write frame size */
+ __u8 reserved[4]; /* reserved */
+};
+
+/*------------------------------------------------------*/
+/* Data for Connect command */
+/*------------------------------------------------------*/
+struct conncmd {
+ char WS_name[8]; /* Workstation application name */
+ char host_name[8]; /* Host application name */
+ __u16 reserved1[2]; /* read frame size */
+ __u8 reserved2[4]; /* reserved */
+};
+
+/*------------------------------------------------------*/
+/* Data for CLAW error */
+/*------------------------------------------------------*/
+struct clawwerror {
+ char reserved1[8]; /* reserved */
+ char reserved2[8]; /* reserved */
+ char reserved3[8]; /* reserved */
+};
+
+/*------------------------------------------------------*/
+/* Data buffer for CLAW */
+/*------------------------------------------------------*/
+struct clawbuf {
+ char buffer[MAX_ENVELOPE_SIZE]; /* data buffer */
+};
+
+/*------------------------------------------------------*/
+/* Channel control block for read and write channel */
+/*------------------------------------------------------*/
+
+struct chbk {
+ unsigned int devno;
+ int irq;
+ char id[CLAW_ID_SIZE];
+ __u32 IO_active;
+ __u8 claw_state;
+ struct irb *irb;
+ struct ccw_device *cdev; /* pointer to the channel device */
+ struct net_device *ndev;
+ wait_queue_head_t wait;
+ struct tasklet_struct tasklet;
+ struct timer_list timer;
+ unsigned long flag_a; /* atomic flags */
+#define CLAW_BH_ACTIVE 0
+ unsigned long flag_b; /* atomic flags */
+#define CLAW_WRITE_ACTIVE 0
+ __u8 last_dstat;
+ __u8 flag;
+ struct sk_buff_head collect_queue;
+ spinlock_t collect_lock;
+#define CLAW_WRITE 0x02 /* - Set if this is a write channel */
+#define CLAW_READ 0x01 /* - Set if this is a read channel */
+#define CLAW_TIMER 0x80 /* - Set if timer made the wake_up */
+};
+
+/*--------------------------------------------------------------*
+* CLAW environment block *
+*---------------------------------------------------------------*/
+
+struct claw_env {
+ unsigned int devno[2]; /* device number */
+ char host_name[9]; /* Host name */
+ char adapter_name [9]; /* adapter name */
+ char api_type[9]; /* TCPIP, API or PACKED */
+ void *p_priv; /* privptr */
+ __u16 read_buffers; /* read buffer number */
+ __u16 write_buffers; /* write buffer number */
+ __u16 read_size; /* read buffer size */
+ __u16 write_size; /* write buffer size */
+ __u16 dev_id; /* device ident */
+ __u8 packing; /* are we packing? */
+ volatile __u8 queme_switch; /* gate for imed packing */
+ volatile unsigned long pk_delay; /* Delay for adaptive packing */
+ __u8 in_use; /* device active flag */
+ struct net_device *ndev; /* backward ptr to the net dev*/
+};
+
+/*--------------------------------------------------------------*
+* CLAW main control block *
+*---------------------------------------------------------------*/
+
+struct claw_privbk {
+ void *p_buff_ccw;
+ __u32 p_buff_ccw_num;
+ void *p_buff_read;
+ __u32 p_buff_read_num;
+ __u32 p_buff_pages_perread;
+ void *p_buff_write;
+ __u32 p_buff_write_num;
+ __u32 p_buff_pages_perwrite;
+ long active_link_ID; /* Active logical link ID */
+ struct ccwbk *p_write_free_chain; /* pointer to free ccw chain */
+ struct ccwbk *p_write_active_first; /* ptr to the first write ccw */
+ struct ccwbk *p_write_active_last; /* ptr to the last write ccw */
+ struct ccwbk *p_read_active_first; /* ptr to the first read ccw */
+ struct ccwbk *p_read_active_last; /* ptr to the last read ccw */
+ struct endccw *p_end_ccw; /*ptr to ending ccw */
+ struct ccwbk *p_claw_signal_blk; /* ptr to signal block */
+ __u32 write_free_count; /* number of free bufs for write */
+ struct net_device_stats stats; /* device status */
+ struct chbk channel[2]; /* Channel control blocks */
+ __u8 mtc_skipping;
+ int mtc_offset;
+ int mtc_logical_link;
+ void *p_mtc_envelope;
+ struct sk_buff *pk_skb; /* packing buffer */
+ int pk_cnt;
+ struct clawctl ctl_bk;
+ struct claw_env *p_env;
+ __u8 system_validate_comp;
+ __u8 release_pend;
+ __u8 checksum_received_ip_pkts;
+ __u8 buffs_alloc;
+ struct endccw end_ccw;
+ unsigned long tbusy;
+
+};
+
+
+/************************************************************/
+/* define global constants */
+/************************************************************/
+
+#define CCWBK_SIZE sizeof(struct ccwbk)
+
+
diff --git a/drivers/s390/net/ctcdbug.c b/drivers/s390/net/ctcdbug.c
new file mode 100644
index 0000000..2c86bfa
--- /dev/null
+++ b/drivers/s390/net/ctcdbug.c
@@ -0,0 +1,83 @@
+/*
+ *
+ * linux/drivers/s390/net/ctcdbug.c ($Revision: 1.4 $)
+ *
+ * CTC / ESCON network driver - s390 dbf exploit.
+ *
+ * Copyright 2000,2003 IBM Corporation
+ *
+ * Author(s): Original Code written by
+ * Peter Tiedemann (ptiedem@de.ibm.com)
+ *
+ * $Revision: 1.4 $ $Date: 2004/08/04 10:11:59 $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "ctcdbug.h"
+
+/**
+ * Debug Facility Stuff
+ */
+debug_info_t *ctc_dbf_setup = NULL;
+debug_info_t *ctc_dbf_data = NULL;
+debug_info_t *ctc_dbf_trace = NULL;
+
+DEFINE_PER_CPU(char[256], ctc_dbf_txt_buf);
+
+void
+ctc_unregister_dbf_views(void)
+{
+ if (ctc_dbf_setup)
+ debug_unregister(ctc_dbf_setup);
+ if (ctc_dbf_data)
+ debug_unregister(ctc_dbf_data);
+ if (ctc_dbf_trace)
+ debug_unregister(ctc_dbf_trace);
+}
+int
+ctc_register_dbf_views(void)
+{
+ ctc_dbf_setup = debug_register(CTC_DBF_SETUP_NAME,
+ CTC_DBF_SETUP_INDEX,
+ CTC_DBF_SETUP_NR_AREAS,
+ CTC_DBF_SETUP_LEN);
+ ctc_dbf_data = debug_register(CTC_DBF_DATA_NAME,
+ CTC_DBF_DATA_INDEX,
+ CTC_DBF_DATA_NR_AREAS,
+ CTC_DBF_DATA_LEN);
+ ctc_dbf_trace = debug_register(CTC_DBF_TRACE_NAME,
+ CTC_DBF_TRACE_INDEX,
+ CTC_DBF_TRACE_NR_AREAS,
+ CTC_DBF_TRACE_LEN);
+
+ if ((ctc_dbf_setup == NULL) || (ctc_dbf_data == NULL) ||
+ (ctc_dbf_trace == NULL)) {
+ ctc_unregister_dbf_views();
+ return -ENOMEM;
+ }
+ debug_register_view(ctc_dbf_setup, &debug_hex_ascii_view);
+ debug_set_level(ctc_dbf_setup, CTC_DBF_SETUP_LEVEL);
+
+ debug_register_view(ctc_dbf_data, &debug_hex_ascii_view);
+ debug_set_level(ctc_dbf_data, CTC_DBF_DATA_LEVEL);
+
+ debug_register_view(ctc_dbf_trace, &debug_hex_ascii_view);
+ debug_set_level(ctc_dbf_trace, CTC_DBF_TRACE_LEVEL);
+
+ return 0;
+}
+
+
diff --git a/drivers/s390/net/ctcdbug.h b/drivers/s390/net/ctcdbug.h
new file mode 100644
index 0000000..ef88839
--- /dev/null
+++ b/drivers/s390/net/ctcdbug.h
@@ -0,0 +1,123 @@
+/*
+ *
+ * linux/drivers/s390/net/ctcdbug.h ($Revision: 1.4 $)
+ *
+ * CTC / ESCON network driver - s390 dbf exploit.
+ *
+ * Copyright 2000,2003 IBM Corporation
+ *
+ * Author(s): Original Code written by
+ * Peter Tiedemann (ptiedem@de.ibm.com)
+ *
+ * $Revision: 1.4 $ $Date: 2004/10/15 09:26:58 $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#include <asm/debug.h>
+/**
+ * Debug Facility stuff
+ */
+#define CTC_DBF_SETUP_NAME "ctc_setup"
+#define CTC_DBF_SETUP_LEN 16
+#define CTC_DBF_SETUP_INDEX 3
+#define CTC_DBF_SETUP_NR_AREAS 1
+#define CTC_DBF_SETUP_LEVEL 3
+
+#define CTC_DBF_DATA_NAME "ctc_data"
+#define CTC_DBF_DATA_LEN 128
+#define CTC_DBF_DATA_INDEX 3
+#define CTC_DBF_DATA_NR_AREAS 1
+#define CTC_DBF_DATA_LEVEL 2
+
+#define CTC_DBF_TRACE_NAME "ctc_trace"
+#define CTC_DBF_TRACE_LEN 16
+#define CTC_DBF_TRACE_INDEX 2
+#define CTC_DBF_TRACE_NR_AREAS 2
+#define CTC_DBF_TRACE_LEVEL 3
+
+#define DBF_TEXT(name,level,text) \
+ do { \
+ debug_text_event(ctc_dbf_##name,level,text); \
+ } while (0)
+
+#define DBF_HEX(name,level,addr,len) \
+ do { \
+ debug_event(ctc_dbf_##name,level,(void*)(addr),len); \
+ } while (0)
+
+DECLARE_PER_CPU(char[256], ctc_dbf_txt_buf);
+extern debug_info_t *ctc_dbf_setup;
+extern debug_info_t *ctc_dbf_data;
+extern debug_info_t *ctc_dbf_trace;
+
+
+#define DBF_TEXT_(name,level,text...) \
+ do { \
+ char* ctc_dbf_txt_buf = get_cpu_var(ctc_dbf_txt_buf); \
+ sprintf(ctc_dbf_txt_buf, text); \
+ debug_text_event(ctc_dbf_##name,level,ctc_dbf_txt_buf); \
+ put_cpu_var(ctc_dbf_txt_buf); \
+ } while (0)
+
+#define DBF_SPRINTF(name,level,text...) \
+ do { \
+ debug_sprintf_event(ctc_dbf_trace, level, ##text ); \
+ debug_sprintf_event(ctc_dbf_trace, level, text ); \
+ } while (0)
+
+
+int ctc_register_dbf_views(void);
+
+void ctc_unregister_dbf_views(void);
+
+/**
+ * some more debug stuff
+ */
+
+#define HEXDUMP16(importance,header,ptr) \
+PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
+ *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
+ *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
+ *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
+ *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
+ *(((char*)ptr)+12),*(((char*)ptr)+13), \
+ *(((char*)ptr)+14),*(((char*)ptr)+15)); \
+PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
+ *(((char*)ptr)+16),*(((char*)ptr)+17), \
+ *(((char*)ptr)+18),*(((char*)ptr)+19), \
+ *(((char*)ptr)+20),*(((char*)ptr)+21), \
+ *(((char*)ptr)+22),*(((char*)ptr)+23), \
+ *(((char*)ptr)+24),*(((char*)ptr)+25), \
+ *(((char*)ptr)+26),*(((char*)ptr)+27), \
+ *(((char*)ptr)+28),*(((char*)ptr)+29), \
+ *(((char*)ptr)+30),*(((char*)ptr)+31));
+
+static inline void
+hex_dump(unsigned char *buf, size_t len)
+{
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ if (i && !(i % 16))
+ printk("\n");
+ printk("%02x ", *(buf + i));
+ }
+ printk("\n");
+}
+
diff --git a/drivers/s390/net/ctcmain.c b/drivers/s390/net/ctcmain.c
new file mode 100644
index 0000000..7266bf5
--- /dev/null
+++ b/drivers/s390/net/ctcmain.c
@@ -0,0 +1,3304 @@
+/*
+ * $Id: ctcmain.c,v 1.72 2005/03/17 10:51:52 ptiedem Exp $
+ *
+ * CTC / ESCON network driver
+ *
+ * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ * Fixes by : Jochen Röhrig (roehrig@de.ibm.com)
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ Peter Tiedemann (ptiedem@de.ibm.com)
+ * Driver Model stuff by : Cornelia Huck <cohuck@de.ibm.com>
+ *
+ * Documentation used:
+ * - Principles of Operation (IBM doc#: SA22-7201-06)
+ * - Common IO/-Device Commands and Self Description (IBM doc#: SA22-7204-02)
+ * - Common IO/-Device Commands and Self Description (IBM doc#: SN22-5535)
+ * - ESCON Channel-to-Channel Adapter (IBM doc#: SA22-7203-00)
+ * - ESCON I/O Interface (IBM doc#: SA22-7202-029
+ *
+ * and the source of the original CTC driver by:
+ * Dieter Wellerdiek (wel@de.ibm.com)
+ * Martin Schwidefsky (schwidefsky@de.ibm.com)
+ * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
+ * Jochen Röhrig (roehrig@de.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * RELEASE-TAG: CTC/ESCON network driver $Revision: 1.72 $
+ *
+ */
+
+#undef DEBUG
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/timer.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+
+#include <linux/signal.h>
+#include <linux/string.h>
+
+#include <linux/ip.h>
+#include <linux/if_arp.h>
+#include <linux/tcp.h>
+#include <linux/skbuff.h>
+#include <linux/ctype.h>
+#include <net/dst.h>
+
+#include <asm/io.h>
+#include <asm/ccwdev.h>
+#include <asm/ccwgroup.h>
+#include <asm/uaccess.h>
+
+#include <asm/idals.h>
+
+#include "ctctty.h"
+#include "fsm.h"
+#include "cu3088.h"
+#include "ctcdbug.h"
+
+MODULE_AUTHOR("(C) 2000 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
+MODULE_DESCRIPTION("Linux for S/390 CTC/Escon Driver");
+MODULE_LICENSE("GPL");
+
+/**
+ * CCW commands, used in this driver.
+ */
+#define CCW_CMD_WRITE 0x01
+#define CCW_CMD_READ 0x02
+#define CCW_CMD_SET_EXTENDED 0xc3
+#define CCW_CMD_PREPARE 0xe3
+
+#define CTC_PROTO_S390 0
+#define CTC_PROTO_LINUX 1
+#define CTC_PROTO_LINUX_TTY 2
+#define CTC_PROTO_OS390 3
+#define CTC_PROTO_MAX 3
+
+#define CTC_BUFSIZE_LIMIT 65535
+#define CTC_BUFSIZE_DEFAULT 32768
+
+#define CTC_TIMEOUT_5SEC 5000
+
+#define CTC_INITIAL_BLOCKLEN 2
+
+#define READ 0
+#define WRITE 1
+
+#define CTC_ID_SIZE BUS_ID_SIZE+3
+
+
+struct ctc_profile {
+ unsigned long maxmulti;
+ unsigned long maxcqueue;
+ unsigned long doios_single;
+ unsigned long doios_multi;
+ unsigned long txlen;
+ unsigned long tx_time;
+ struct timespec send_stamp;
+};
+
+/**
+ * Definition of one channel
+ */
+struct channel {
+
+ /**
+ * Pointer to next channel in list.
+ */
+ struct channel *next;
+ char id[CTC_ID_SIZE];
+ struct ccw_device *cdev;
+
+ /**
+ * Type of this channel.
+ * CTC/A or Escon for valid channels.
+ */
+ enum channel_types type;
+
+ /**
+ * Misc. flags. See CHANNEL_FLAGS_... below
+ */
+ __u32 flags;
+
+ /**
+ * The protocol of this channel
+ */
+ __u16 protocol;
+
+ /**
+ * I/O and irq related stuff
+ */
+ struct ccw1 *ccw;
+ struct irb *irb;
+
+ /**
+ * RX/TX buffer size
+ */
+ int max_bufsize;
+
+ /**
+ * Transmit/Receive buffer.
+ */
+ struct sk_buff *trans_skb;
+
+ /**
+ * Universal I/O queue.
+ */
+ struct sk_buff_head io_queue;
+
+ /**
+ * TX queue for collecting skb's during busy.
+ */
+ struct sk_buff_head collect_queue;
+
+ /**
+ * Amount of data in collect_queue.
+ */
+ int collect_len;
+
+ /**
+ * spinlock for collect_queue and collect_len
+ */
+ spinlock_t collect_lock;
+
+ /**
+ * Timer for detecting unresposive
+ * I/O operations.
+ */
+ fsm_timer timer;
+
+ /**
+ * Retry counter for misc. operations.
+ */
+ int retry;
+
+ /**
+ * The finite state machine of this channel
+ */
+ fsm_instance *fsm;
+
+ /**
+ * The corresponding net_device this channel
+ * belongs to.
+ */
+ struct net_device *netdev;
+
+ struct ctc_profile prof;
+
+ unsigned char *trans_skb_data;
+
+ __u16 logflags;
+};
+
+#define CHANNEL_FLAGS_READ 0
+#define CHANNEL_FLAGS_WRITE 1
+#define CHANNEL_FLAGS_INUSE 2
+#define CHANNEL_FLAGS_BUFSIZE_CHANGED 4
+#define CHANNEL_FLAGS_FAILED 8
+#define CHANNEL_FLAGS_WAITIRQ 16
+#define CHANNEL_FLAGS_RWMASK 1
+#define CHANNEL_DIRECTION(f) (f & CHANNEL_FLAGS_RWMASK)
+
+#define LOG_FLAG_ILLEGALPKT 1
+#define LOG_FLAG_ILLEGALSIZE 2
+#define LOG_FLAG_OVERRUN 4
+#define LOG_FLAG_NOMEM 8
+
+#define CTC_LOGLEVEL_INFO 1
+#define CTC_LOGLEVEL_NOTICE 2
+#define CTC_LOGLEVEL_WARN 4
+#define CTC_LOGLEVEL_EMERG 8
+#define CTC_LOGLEVEL_ERR 16
+#define CTC_LOGLEVEL_DEBUG 32
+#define CTC_LOGLEVEL_CRIT 64
+
+#define CTC_LOGLEVEL_DEFAULT \
+(CTC_LOGLEVEL_INFO | CTC_LOGLEVEL_NOTICE | CTC_LOGLEVEL_WARN | CTC_LOGLEVEL_CRIT)
+
+#define CTC_LOGLEVEL_MAX ((CTC_LOGLEVEL_CRIT<<1)-1)
+
+static int loglevel = CTC_LOGLEVEL_DEFAULT;
+
+#define ctc_pr_debug(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_DEBUG) printk(KERN_DEBUG fmt,##arg); } while (0)
+
+#define ctc_pr_info(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_INFO) printk(KERN_INFO fmt,##arg); } while (0)
+
+#define ctc_pr_notice(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_NOTICE) printk(KERN_NOTICE fmt,##arg); } while (0)
+
+#define ctc_pr_warn(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_WARN) printk(KERN_WARNING fmt,##arg); } while (0)
+
+#define ctc_pr_emerg(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_EMERG) printk(KERN_EMERG fmt,##arg); } while (0)
+
+#define ctc_pr_err(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_ERR) printk(KERN_ERR fmt,##arg); } while (0)
+
+#define ctc_pr_crit(fmt, arg...) \
+do { if (loglevel & CTC_LOGLEVEL_CRIT) printk(KERN_CRIT fmt,##arg); } while (0)
+
+/**
+ * Linked list of all detected channels.
+ */
+static struct channel *channels = NULL;
+
+struct ctc_priv {
+ struct net_device_stats stats;
+ unsigned long tbusy;
+ /**
+ * The finite state machine of this interface.
+ */
+ fsm_instance *fsm;
+ /**
+ * The protocol of this device
+ */
+ __u16 protocol;
+ /**
+ * Timer for restarting after I/O Errors
+ */
+ fsm_timer restart_timer;
+
+ int buffer_size;
+
+ struct channel *channel[2];
+};
+
+/**
+ * Definition of our link level header.
+ */
+struct ll_header {
+ __u16 length;
+ __u16 type;
+ __u16 unused;
+};
+#define LL_HEADER_LENGTH (sizeof(struct ll_header))
+
+/**
+ * Compatibility macros for busy handling
+ * of network devices.
+ */
+static __inline__ void
+ctc_clear_busy(struct net_device * dev)
+{
+ clear_bit(0, &(((struct ctc_priv *) dev->priv)->tbusy));
+ if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
+ netif_wake_queue(dev);
+}
+
+static __inline__ int
+ctc_test_and_set_busy(struct net_device * dev)
+{
+ if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
+ netif_stop_queue(dev);
+ return test_and_set_bit(0, &((struct ctc_priv *) dev->priv)->tbusy);
+}
+
+/**
+ * Print Banner.
+ */
+static void
+print_banner(void)
+{
+ static int printed = 0;
+ char vbuf[] = "$Revision: 1.72 $";
+ char *version = vbuf;
+
+ if (printed)
+ return;
+ if ((version = strchr(version, ':'))) {
+ char *p = strchr(version + 1, '$');
+ if (p)
+ *p = '\0';
+ } else
+ version = " ??? ";
+ printk(KERN_INFO "CTC driver Version%s"
+#ifdef DEBUG
+ " (DEBUG-VERSION, " __DATE__ __TIME__ ")"
+#endif
+ " initialized\n", version);
+ printed = 1;
+}
+
+/**
+ * Return type of a detected device.
+ */
+static enum channel_types
+get_channel_type(struct ccw_device_id *id)
+{
+ enum channel_types type = (enum channel_types) id->driver_info;
+
+ if (type == channel_type_ficon)
+ type = channel_type_escon;
+
+ return type;
+}
+
+/**
+ * States of the interface statemachine.
+ */
+enum dev_states {
+ DEV_STATE_STOPPED,
+ DEV_STATE_STARTWAIT_RXTX,
+ DEV_STATE_STARTWAIT_RX,
+ DEV_STATE_STARTWAIT_TX,
+ DEV_STATE_STOPWAIT_RXTX,
+ DEV_STATE_STOPWAIT_RX,
+ DEV_STATE_STOPWAIT_TX,
+ DEV_STATE_RUNNING,
+ /**
+ * MUST be always the last element!!
+ */
+ NR_DEV_STATES
+};
+
+static const char *dev_state_names[] = {
+ "Stopped",
+ "StartWait RXTX",
+ "StartWait RX",
+ "StartWait TX",
+ "StopWait RXTX",
+ "StopWait RX",
+ "StopWait TX",
+ "Running",
+};
+
+/**
+ * Events of the interface statemachine.
+ */
+enum dev_events {
+ DEV_EVENT_START,
+ DEV_EVENT_STOP,
+ DEV_EVENT_RXUP,
+ DEV_EVENT_TXUP,
+ DEV_EVENT_RXDOWN,
+ DEV_EVENT_TXDOWN,
+ DEV_EVENT_RESTART,
+ /**
+ * MUST be always the last element!!
+ */
+ NR_DEV_EVENTS
+};
+
+static const char *dev_event_names[] = {
+ "Start",
+ "Stop",
+ "RX up",
+ "TX up",
+ "RX down",
+ "TX down",
+ "Restart",
+};
+
+/**
+ * Events of the channel statemachine
+ */
+enum ch_events {
+ /**
+ * Events, representing return code of
+ * I/O operations (ccw_device_start, ccw_device_halt et al.)
+ */
+ CH_EVENT_IO_SUCCESS,
+ CH_EVENT_IO_EBUSY,
+ CH_EVENT_IO_ENODEV,
+ CH_EVENT_IO_EIO,
+ CH_EVENT_IO_UNKNOWN,
+
+ CH_EVENT_ATTNBUSY,
+ CH_EVENT_ATTN,
+ CH_EVENT_BUSY,
+
+ /**
+ * Events, representing unit-check
+ */
+ CH_EVENT_UC_RCRESET,
+ CH_EVENT_UC_RSRESET,
+ CH_EVENT_UC_TXTIMEOUT,
+ CH_EVENT_UC_TXPARITY,
+ CH_EVENT_UC_HWFAIL,
+ CH_EVENT_UC_RXPARITY,
+ CH_EVENT_UC_ZERO,
+ CH_EVENT_UC_UNKNOWN,
+
+ /**
+ * Events, representing subchannel-check
+ */
+ CH_EVENT_SC_UNKNOWN,
+
+ /**
+ * Events, representing machine checks
+ */
+ CH_EVENT_MC_FAIL,
+ CH_EVENT_MC_GOOD,
+
+ /**
+ * Event, representing normal IRQ
+ */
+ CH_EVENT_IRQ,
+ CH_EVENT_FINSTAT,
+
+ /**
+ * Event, representing timer expiry.
+ */
+ CH_EVENT_TIMER,
+
+ /**
+ * Events, representing commands from upper levels.
+ */
+ CH_EVENT_START,
+ CH_EVENT_STOP,
+
+ /**
+ * MUST be always the last element!!
+ */
+ NR_CH_EVENTS,
+};
+
+static const char *ch_event_names[] = {
+ "ccw_device success",
+ "ccw_device busy",
+ "ccw_device enodev",
+ "ccw_device ioerr",
+ "ccw_device unknown",
+
+ "Status ATTN & BUSY",
+ "Status ATTN",
+ "Status BUSY",
+
+ "Unit check remote reset",
+ "Unit check remote system reset",
+ "Unit check TX timeout",
+ "Unit check TX parity",
+ "Unit check Hardware failure",
+ "Unit check RX parity",
+ "Unit check ZERO",
+ "Unit check Unknown",
+
+ "SubChannel check Unknown",
+
+ "Machine check failure",
+ "Machine check operational",
+
+ "IRQ normal",
+ "IRQ final",
+
+ "Timer",
+
+ "Start",
+ "Stop",
+};
+
+/**
+ * States of the channel statemachine.
+ */
+enum ch_states {
+ /**
+ * Channel not assigned to any device,
+ * initial state, direction invalid
+ */
+ CH_STATE_IDLE,
+
+ /**
+ * Channel assigned but not operating
+ */
+ CH_STATE_STOPPED,
+ CH_STATE_STARTWAIT,
+ CH_STATE_STARTRETRY,
+ CH_STATE_SETUPWAIT,
+ CH_STATE_RXINIT,
+ CH_STATE_TXINIT,
+ CH_STATE_RX,
+ CH_STATE_TX,
+ CH_STATE_RXIDLE,
+ CH_STATE_TXIDLE,
+ CH_STATE_RXERR,
+ CH_STATE_TXERR,
+ CH_STATE_TERM,
+ CH_STATE_DTERM,
+ CH_STATE_NOTOP,
+
+ /**
+ * MUST be always the last element!!
+ */
+ NR_CH_STATES,
+};
+
+static const char *ch_state_names[] = {
+ "Idle",
+ "Stopped",
+ "StartWait",
+ "StartRetry",
+ "SetupWait",
+ "RX init",
+ "TX init",
+ "RX",
+ "TX",
+ "RX idle",
+ "TX idle",
+ "RX error",
+ "TX error",
+ "Terminating",
+ "Restarting",
+ "Not operational",
+};
+
+#ifdef DEBUG
+/**
+ * Dump header and first 16 bytes of an sk_buff for debugging purposes.
+ *
+ * @param skb The sk_buff to dump.
+ * @param offset Offset relative to skb-data, where to start the dump.
+ */
+static void
+ctc_dump_skb(struct sk_buff *skb, int offset)
+{
+ unsigned char *p = skb->data;
+ __u16 bl;
+ struct ll_header *header;
+ int i;
+
+ if (!(loglevel & CTC_LOGLEVEL_DEBUG))
+ return;
+ p += offset;
+ bl = *((__u16 *) p);
+ p += 2;
+ header = (struct ll_header *) p;
+ p -= 2;
+
+ printk(KERN_DEBUG "dump:\n");
+ printk(KERN_DEBUG "blocklen=%d %04x\n", bl, bl);
+
+ printk(KERN_DEBUG "h->length=%d %04x\n", header->length,
+ header->length);
+ printk(KERN_DEBUG "h->type=%04x\n", header->type);
+ printk(KERN_DEBUG "h->unused=%04x\n", header->unused);
+ if (bl > 16)
+ bl = 16;
+ printk(KERN_DEBUG "data: ");
+ for (i = 0; i < bl; i++)
+ printk("%02x%s", *p++, (i % 16) ? " " : "\n<7>");
+ printk("\n");
+}
+#else
+static inline void
+ctc_dump_skb(struct sk_buff *skb, int offset)
+{
+}
+#endif
+
+/**
+ * Unpack a just received skb and hand it over to
+ * upper layers.
+ *
+ * @param ch The channel where this skb has been received.
+ * @param pskb The received skb.
+ */
+static __inline__ void
+ctc_unpack_skb(struct channel *ch, struct sk_buff *pskb)
+{
+ struct net_device *dev = ch->netdev;
+ struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
+ __u16 len = *((__u16 *) pskb->data);
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ skb_put(pskb, 2 + LL_HEADER_LENGTH);
+ skb_pull(pskb, 2);
+ pskb->dev = dev;
+ pskb->ip_summed = CHECKSUM_UNNECESSARY;
+ while (len > 0) {
+ struct sk_buff *skb;
+ struct ll_header *header = (struct ll_header *) pskb->data;
+
+ skb_pull(pskb, LL_HEADER_LENGTH);
+ if ((ch->protocol == CTC_PROTO_S390) &&
+ (header->type != ETH_P_IP)) {
+
+#ifndef DEBUG
+ if (!(ch->logflags & LOG_FLAG_ILLEGALPKT)) {
+#endif
+ /**
+ * Check packet type only if we stick strictly
+ * to S/390's protocol of OS390. This only
+ * supports IP. Otherwise allow any packet
+ * type.
+ */
+ ctc_pr_warn(
+ "%s Illegal packet type 0x%04x received, dropping\n",
+ dev->name, header->type);
+ ch->logflags |= LOG_FLAG_ILLEGALPKT;
+#ifndef DEBUG
+ }
+#endif
+#ifdef DEBUG
+ ctc_dump_skb(pskb, -6);
+#endif
+ privptr->stats.rx_dropped++;
+ privptr->stats.rx_frame_errors++;
+ return;
+ }
+ pskb->protocol = ntohs(header->type);
+ if (header->length <= LL_HEADER_LENGTH) {
+#ifndef DEBUG
+ if (!(ch->logflags & LOG_FLAG_ILLEGALSIZE)) {
+#endif
+ ctc_pr_warn(
+ "%s Illegal packet size %d "
+ "received (MTU=%d blocklen=%d), "
+ "dropping\n", dev->name, header->length,
+ dev->mtu, len);
+ ch->logflags |= LOG_FLAG_ILLEGALSIZE;
+#ifndef DEBUG
+ }
+#endif
+#ifdef DEBUG
+ ctc_dump_skb(pskb, -6);
+#endif
+ privptr->stats.rx_dropped++;
+ privptr->stats.rx_length_errors++;
+ return;
+ }
+ header->length -= LL_HEADER_LENGTH;
+ len -= LL_HEADER_LENGTH;
+ if ((header->length > skb_tailroom(pskb)) ||
+ (header->length > len)) {
+#ifndef DEBUG
+ if (!(ch->logflags & LOG_FLAG_OVERRUN)) {
+#endif
+ ctc_pr_warn(
+ "%s Illegal packet size %d "
+ "(beyond the end of received data), "
+ "dropping\n", dev->name, header->length);
+ ch->logflags |= LOG_FLAG_OVERRUN;
+#ifndef DEBUG
+ }
+#endif
+#ifdef DEBUG
+ ctc_dump_skb(pskb, -6);
+#endif
+ privptr->stats.rx_dropped++;
+ privptr->stats.rx_length_errors++;
+ return;
+ }
+ skb_put(pskb, header->length);
+ pskb->mac.raw = pskb->data;
+ len -= header->length;
+ skb = dev_alloc_skb(pskb->len);
+ if (!skb) {
+#ifndef DEBUG
+ if (!(ch->logflags & LOG_FLAG_NOMEM)) {
+#endif
+ ctc_pr_warn(
+ "%s Out of memory in ctc_unpack_skb\n",
+ dev->name);
+ ch->logflags |= LOG_FLAG_NOMEM;
+#ifndef DEBUG
+ }
+#endif
+ privptr->stats.rx_dropped++;
+ return;
+ }
+ memcpy(skb_put(skb, pskb->len), pskb->data, pskb->len);
+ skb->mac.raw = skb->data;
+ skb->dev = pskb->dev;
+ skb->protocol = pskb->protocol;
+ pskb->ip_summed = CHECKSUM_UNNECESSARY;
+ if (ch->protocol == CTC_PROTO_LINUX_TTY)
+ ctc_tty_netif_rx(skb);
+ else
+ netif_rx_ni(skb);
+ /**
+ * Successful rx; reset logflags
+ */
+ ch->logflags = 0;
+ dev->last_rx = jiffies;
+ privptr->stats.rx_packets++;
+ privptr->stats.rx_bytes += skb->len;
+ if (len > 0) {
+ skb_pull(pskb, header->length);
+ if (skb_tailroom(pskb) < LL_HEADER_LENGTH) {
+#ifndef DEBUG
+ if (!(ch->logflags & LOG_FLAG_OVERRUN)) {
+#endif
+ ctc_pr_warn(
+ "%s Overrun in ctc_unpack_skb\n",
+ dev->name);
+ ch->logflags |= LOG_FLAG_OVERRUN;
+#ifndef DEBUG
+ }
+#endif
+ return;
+ }
+ skb_put(pskb, LL_HEADER_LENGTH);
+ }
+ }
+}
+
+/**
+ * Check return code of a preceeding ccw_device call, halt_IO etc...
+ *
+ * @param ch The channel, the error belongs to.
+ * @param return_code The error code to inspect.
+ */
+static void inline
+ccw_check_return_code(struct channel *ch, int return_code, char *msg)
+{
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ switch (return_code) {
+ case 0:
+ fsm_event(ch->fsm, CH_EVENT_IO_SUCCESS, ch);
+ break;
+ case -EBUSY:
+ ctc_pr_warn("%s (%s): Busy !\n", ch->id, msg);
+ fsm_event(ch->fsm, CH_EVENT_IO_EBUSY, ch);
+ break;
+ case -ENODEV:
+ ctc_pr_emerg("%s (%s): Invalid device called for IO\n",
+ ch->id, msg);
+ fsm_event(ch->fsm, CH_EVENT_IO_ENODEV, ch);
+ break;
+ case -EIO:
+ ctc_pr_emerg("%s (%s): Status pending... \n",
+ ch->id, msg);
+ fsm_event(ch->fsm, CH_EVENT_IO_EIO, ch);
+ break;
+ default:
+ ctc_pr_emerg("%s (%s): Unknown error in do_IO %04x\n",
+ ch->id, msg, return_code);
+ fsm_event(ch->fsm, CH_EVENT_IO_UNKNOWN, ch);
+ }
+}
+
+/**
+ * Check sense of a unit check.
+ *
+ * @param ch The channel, the sense code belongs to.
+ * @param sense The sense code to inspect.
+ */
+static void inline
+ccw_unit_check(struct channel *ch, unsigned char sense)
+{
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if (sense & SNS0_INTERVENTION_REQ) {
+ if (sense & 0x01) {
+ if (ch->protocol != CTC_PROTO_LINUX_TTY)
+ ctc_pr_debug("%s: Interface disc. or Sel. reset "
+ "(remote)\n", ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_RCRESET, ch);
+ } else {
+ ctc_pr_debug("%s: System reset (remote)\n", ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_RSRESET, ch);
+ }
+ } else if (sense & SNS0_EQUIPMENT_CHECK) {
+ if (sense & SNS0_BUS_OUT_CHECK) {
+ ctc_pr_warn("%s: Hardware malfunction (remote)\n",
+ ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_HWFAIL, ch);
+ } else {
+ ctc_pr_warn("%s: Read-data parity error (remote)\n",
+ ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_RXPARITY, ch);
+ }
+ } else if (sense & SNS0_BUS_OUT_CHECK) {
+ if (sense & 0x04) {
+ ctc_pr_warn("%s: Data-streaming timeout)\n", ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_TXTIMEOUT, ch);
+ } else {
+ ctc_pr_warn("%s: Data-transfer parity error\n", ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_TXPARITY, ch);
+ }
+ } else if (sense & SNS0_CMD_REJECT) {
+ ctc_pr_warn("%s: Command reject\n", ch->id);
+ } else if (sense == 0) {
+ ctc_pr_debug("%s: Unit check ZERO\n", ch->id);
+ fsm_event(ch->fsm, CH_EVENT_UC_ZERO, ch);
+ } else {
+ ctc_pr_warn("%s: Unit Check with sense code: %02x\n",
+ ch->id, sense);
+ fsm_event(ch->fsm, CH_EVENT_UC_UNKNOWN, ch);
+ }
+}
+
+static void
+ctc_purge_skb_queue(struct sk_buff_head *q)
+{
+ struct sk_buff *skb;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+
+ while ((skb = skb_dequeue(q))) {
+ atomic_dec(&skb->users);
+ dev_kfree_skb_irq(skb);
+ }
+}
+
+static __inline__ int
+ctc_checkalloc_buffer(struct channel *ch, int warn)
+{
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if ((ch->trans_skb == NULL) ||
+ (ch->flags & CHANNEL_FLAGS_BUFSIZE_CHANGED)) {
+ if (ch->trans_skb != NULL)
+ dev_kfree_skb(ch->trans_skb);
+ clear_normalized_cda(&ch->ccw[1]);
+ ch->trans_skb = __dev_alloc_skb(ch->max_bufsize,
+ GFP_ATOMIC | GFP_DMA);
+ if (ch->trans_skb == NULL) {
+ if (warn)
+ ctc_pr_warn(
+ "%s: Couldn't alloc %s trans_skb\n",
+ ch->id,
+ (CHANNEL_DIRECTION(ch->flags) == READ) ?
+ "RX" : "TX");
+ return -ENOMEM;
+ }
+ ch->ccw[1].count = ch->max_bufsize;
+ if (set_normalized_cda(&ch->ccw[1], ch->trans_skb->data)) {
+ dev_kfree_skb(ch->trans_skb);
+ ch->trans_skb = NULL;
+ if (warn)
+ ctc_pr_warn(
+ "%s: set_normalized_cda for %s "
+ "trans_skb failed, dropping packets\n",
+ ch->id,
+ (CHANNEL_DIRECTION(ch->flags) == READ) ?
+ "RX" : "TX");
+ return -ENOMEM;
+ }
+ ch->ccw[1].count = 0;
+ ch->trans_skb_data = ch->trans_skb->data;
+ ch->flags &= ~CHANNEL_FLAGS_BUFSIZE_CHANGED;
+ }
+ return 0;
+}
+
+/**
+ * Dummy NOP action for statemachines
+ */
+static void
+fsm_action_nop(fsm_instance * fi, int event, void *arg)
+{
+}
+
+/**
+ * Actions for channel - statemachines.
+ *****************************************************************************/
+
+/**
+ * Normal data has been send. Free the corresponding
+ * skb (it's in io_queue), reset dev->tbusy and
+ * revert to idle state.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_txdone(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+ struct ctc_priv *privptr = dev->priv;
+ struct sk_buff *skb;
+ int first = 1;
+ int i;
+ unsigned long duration;
+ struct timespec done_stamp = xtime;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+
+ duration =
+ (done_stamp.tv_sec - ch->prof.send_stamp.tv_sec) * 1000000 +
+ (done_stamp.tv_nsec - ch->prof.send_stamp.tv_nsec) / 1000;
+ if (duration > ch->prof.tx_time)
+ ch->prof.tx_time = duration;
+
+ if (ch->irb->scsw.count != 0)
+ ctc_pr_debug("%s: TX not complete, remaining %d bytes\n",
+ dev->name, ch->irb->scsw.count);
+ fsm_deltimer(&ch->timer);
+ while ((skb = skb_dequeue(&ch->io_queue))) {
+ privptr->stats.tx_packets++;
+ privptr->stats.tx_bytes += skb->len - LL_HEADER_LENGTH;
+ if (first) {
+ privptr->stats.tx_bytes += 2;
+ first = 0;
+ }
+ atomic_dec(&skb->users);
+ dev_kfree_skb_irq(skb);
+ }
+ spin_lock(&ch->collect_lock);
+ clear_normalized_cda(&ch->ccw[4]);
+ if (ch->collect_len > 0) {
+ int rc;
+
+ if (ctc_checkalloc_buffer(ch, 1)) {
+ spin_unlock(&ch->collect_lock);
+ return;
+ }
+ ch->trans_skb->tail = ch->trans_skb->data = ch->trans_skb_data;
+ ch->trans_skb->len = 0;
+ if (ch->prof.maxmulti < (ch->collect_len + 2))
+ ch->prof.maxmulti = ch->collect_len + 2;
+ if (ch->prof.maxcqueue < skb_queue_len(&ch->collect_queue))
+ ch->prof.maxcqueue = skb_queue_len(&ch->collect_queue);
+ *((__u16 *) skb_put(ch->trans_skb, 2)) = ch->collect_len + 2;
+ i = 0;
+ while ((skb = skb_dequeue(&ch->collect_queue))) {
+ memcpy(skb_put(ch->trans_skb, skb->len), skb->data,
+ skb->len);
+ privptr->stats.tx_packets++;
+ privptr->stats.tx_bytes += skb->len - LL_HEADER_LENGTH;
+ atomic_dec(&skb->users);
+ dev_kfree_skb_irq(skb);
+ i++;
+ }
+ ch->collect_len = 0;
+ spin_unlock(&ch->collect_lock);
+ ch->ccw[1].count = ch->trans_skb->len;
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+ ch->prof.send_stamp = xtime;
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0],
+ (unsigned long) ch, 0xff, 0);
+ ch->prof.doios_multi++;
+ if (rc != 0) {
+ privptr->stats.tx_dropped += i;
+ privptr->stats.tx_errors += i;
+ fsm_deltimer(&ch->timer);
+ ccw_check_return_code(ch, rc, "chained TX");
+ }
+ } else {
+ spin_unlock(&ch->collect_lock);
+ fsm_newstate(fi, CH_STATE_TXIDLE);
+ }
+ ctc_clear_busy(dev);
+}
+
+/**
+ * Initial data is sent.
+ * Notify device statemachine that we are up and
+ * running.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_txidle(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, CH_STATE_TXIDLE);
+ fsm_event(((struct ctc_priv *) ch->netdev->priv)->fsm, DEV_EVENT_TXUP,
+ ch->netdev);
+}
+
+/**
+ * Got normal data, check for sanity, queue it up, allocate new buffer
+ * trigger bottom half, and initiate next read.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_rx(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+ struct ctc_priv *privptr = dev->priv;
+ int len = ch->max_bufsize - ch->irb->scsw.count;
+ struct sk_buff *skb = ch->trans_skb;
+ __u16 block_len = *((__u16 *) skb->data);
+ int check_len;
+ int rc;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ if (len < 8) {
+ ctc_pr_debug("%s: got packet with length %d < 8\n",
+ dev->name, len);
+ privptr->stats.rx_dropped++;
+ privptr->stats.rx_length_errors++;
+ goto again;
+ }
+ if (len > ch->max_bufsize) {
+ ctc_pr_debug("%s: got packet with length %d > %d\n",
+ dev->name, len, ch->max_bufsize);
+ privptr->stats.rx_dropped++;
+ privptr->stats.rx_length_errors++;
+ goto again;
+ }
+
+ /**
+ * VM TCP seems to have a bug sending 2 trailing bytes of garbage.
+ */
+ switch (ch->protocol) {
+ case CTC_PROTO_S390:
+ case CTC_PROTO_OS390:
+ check_len = block_len + 2;
+ break;
+ default:
+ check_len = block_len;
+ break;
+ }
+ if ((len < block_len) || (len > check_len)) {
+ ctc_pr_debug("%s: got block length %d != rx length %d\n",
+ dev->name, block_len, len);
+#ifdef DEBUG
+ ctc_dump_skb(skb, 0);
+#endif
+ *((__u16 *) skb->data) = len;
+ privptr->stats.rx_dropped++;
+ privptr->stats.rx_length_errors++;
+ goto again;
+ }
+ block_len -= 2;
+ if (block_len > 0) {
+ *((__u16 *) skb->data) = block_len;
+ ctc_unpack_skb(ch, skb);
+ }
+ again:
+ skb->data = skb->tail = ch->trans_skb_data;
+ skb->len = 0;
+ if (ctc_checkalloc_buffer(ch, 1))
+ return;
+ ch->ccw[1].count = ch->max_bufsize;
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], (unsigned long) ch, 0xff, 0);
+ if (rc != 0)
+ ccw_check_return_code(ch, rc, "normal RX");
+}
+
+static void ch_action_rxidle(fsm_instance * fi, int event, void *arg);
+
+/**
+ * Initialize connection by sending a __u16 of value 0.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_firstio(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ int rc;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+
+ if (fsm_getstate(fi) == CH_STATE_TXIDLE)
+ ctc_pr_debug("%s: remote side issued READ?, init ...\n", ch->id);
+ fsm_deltimer(&ch->timer);
+ if (ctc_checkalloc_buffer(ch, 1))
+ return;
+ if ((fsm_getstate(fi) == CH_STATE_SETUPWAIT) &&
+ (ch->protocol == CTC_PROTO_OS390)) {
+ /* OS/390 resp. z/OS */
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ *((__u16 *) ch->trans_skb->data) = CTC_INITIAL_BLOCKLEN;
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC,
+ CH_EVENT_TIMER, ch);
+ ch_action_rxidle(fi, event, arg);
+ } else {
+ struct net_device *dev = ch->netdev;
+ fsm_newstate(fi, CH_STATE_TXIDLE);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXUP, dev);
+ }
+ return;
+ }
+
+ /**
+ * Don´t setup a timer for receiving the initial RX frame
+ * if in compatibility mode, since VM TCP delays the initial
+ * frame until it has some data to send.
+ */
+ if ((CHANNEL_DIRECTION(ch->flags) == WRITE) ||
+ (ch->protocol != CTC_PROTO_S390))
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+
+ *((__u16 *) ch->trans_skb->data) = CTC_INITIAL_BLOCKLEN;
+ ch->ccw[1].count = 2; /* Transfer only length */
+
+ fsm_newstate(fi, (CHANNEL_DIRECTION(ch->flags) == READ)
+ ? CH_STATE_RXINIT : CH_STATE_TXINIT);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], (unsigned long) ch, 0xff, 0);
+ if (rc != 0) {
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, CH_STATE_SETUPWAIT);
+ ccw_check_return_code(ch, rc, "init IO");
+ }
+ /**
+ * If in compatibility mode since we don´t setup a timer, we
+ * also signal RX channel up immediately. This enables us
+ * to send packets early which in turn usually triggers some
+ * reply from VM TCP which brings up the RX channel to it´s
+ * final state.
+ */
+ if ((CHANNEL_DIRECTION(ch->flags) == READ) &&
+ (ch->protocol == CTC_PROTO_S390)) {
+ struct net_device *dev = ch->netdev;
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_RXUP,
+ dev);
+ }
+}
+
+/**
+ * Got initial data, check it. If OK,
+ * notify device statemachine that we are up and
+ * running.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_rxidle(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+ __u16 buflen;
+ int rc;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ buflen = *((__u16 *) ch->trans_skb->data);
+#ifdef DEBUG
+ ctc_pr_debug("%s: Initial RX count %d\n", dev->name, buflen);
+#endif
+ if (buflen >= CTC_INITIAL_BLOCKLEN) {
+ if (ctc_checkalloc_buffer(ch, 1))
+ return;
+ ch->ccw[1].count = ch->max_bufsize;
+ fsm_newstate(fi, CH_STATE_RXIDLE);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0],
+ (unsigned long) ch, 0xff, 0);
+ if (rc != 0) {
+ fsm_newstate(fi, CH_STATE_RXINIT);
+ ccw_check_return_code(ch, rc, "initial RX");
+ } else
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_RXUP, dev);
+ } else {
+ ctc_pr_debug("%s: Initial RX count %d not %d\n",
+ dev->name, buflen, CTC_INITIAL_BLOCKLEN);
+ ch_action_firstio(fi, event, arg);
+ }
+}
+
+/**
+ * Set channel into extended mode.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_setmode(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ int rc;
+ unsigned long saveflags;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+ fsm_newstate(fi, CH_STATE_SETUPWAIT);
+ saveflags = 0; /* avoids compiler warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_TIMER) // only for timer not yet locked
+ spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[6], (unsigned long) ch, 0xff, 0);
+ if (event == CH_EVENT_TIMER)
+ spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
+ if (rc != 0) {
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, CH_STATE_STARTWAIT);
+ ccw_check_return_code(ch, rc, "set Mode");
+ } else
+ ch->retry = 0;
+}
+
+/**
+ * Setup channel.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_start(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ unsigned long saveflags;
+ int rc;
+ struct net_device *dev;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ch == NULL) {
+ ctc_pr_warn("ch_action_start ch=NULL\n");
+ return;
+ }
+ if (ch->netdev == NULL) {
+ ctc_pr_warn("ch_action_start dev=NULL, id=%s\n", ch->id);
+ return;
+ }
+ dev = ch->netdev;
+
+#ifdef DEBUG
+ ctc_pr_debug("%s: %s channel start\n", dev->name,
+ (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX");
+#endif
+
+ if (ch->trans_skb != NULL) {
+ clear_normalized_cda(&ch->ccw[1]);
+ dev_kfree_skb(ch->trans_skb);
+ ch->trans_skb = NULL;
+ }
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ ch->ccw[1].cmd_code = CCW_CMD_READ;
+ ch->ccw[1].flags = CCW_FLAG_SLI;
+ ch->ccw[1].count = 0;
+ } else {
+ ch->ccw[1].cmd_code = CCW_CMD_WRITE;
+ ch->ccw[1].flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ ch->ccw[1].count = 0;
+ }
+ if (ctc_checkalloc_buffer(ch, 0)) {
+ ctc_pr_notice(
+ "%s: Could not allocate %s trans_skb, delaying "
+ "allocation until first transfer\n",
+ dev->name,
+ (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX");
+ }
+
+ ch->ccw[0].cmd_code = CCW_CMD_PREPARE;
+ ch->ccw[0].flags = CCW_FLAG_SLI | CCW_FLAG_CC;
+ ch->ccw[0].count = 0;
+ ch->ccw[0].cda = 0;
+ ch->ccw[2].cmd_code = CCW_CMD_NOOP; /* jointed CE + DE */
+ ch->ccw[2].flags = CCW_FLAG_SLI;
+ ch->ccw[2].count = 0;
+ ch->ccw[2].cda = 0;
+ memcpy(&ch->ccw[3], &ch->ccw[0], sizeof (struct ccw1) * 3);
+ ch->ccw[4].cda = 0;
+ ch->ccw[4].flags &= ~CCW_FLAG_IDA;
+
+ fsm_newstate(fi, CH_STATE_STARTWAIT);
+ fsm_addtimer(&ch->timer, 1000, CH_EVENT_TIMER, ch);
+ spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
+ rc = ccw_device_halt(ch->cdev, (unsigned long) ch);
+ spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
+ if (rc != 0) {
+ if (rc != -EBUSY)
+ fsm_deltimer(&ch->timer);
+ ccw_check_return_code(ch, rc, "initial HaltIO");
+ }
+#ifdef DEBUG
+ ctc_pr_debug("ctc: %s(): leaving\n", __func__);
+#endif
+}
+
+/**
+ * Shutdown a channel.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_haltio(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ unsigned long saveflags;
+ int rc;
+ int oldstate;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+ saveflags = 0; /* avoids comp warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_STOP) // only for STOP not yet locked
+ spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
+ oldstate = fsm_getstate(fi);
+ fsm_newstate(fi, CH_STATE_TERM);
+ rc = ccw_device_halt(ch->cdev, (unsigned long) ch);
+ if (event == CH_EVENT_STOP)
+ spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
+ if (rc != 0) {
+ if (rc != -EBUSY) {
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, oldstate);
+ }
+ ccw_check_return_code(ch, rc, "HaltIO in ch_action_haltio");
+ }
+}
+
+/**
+ * A channel has successfully been halted.
+ * Cleanup it's queue and notify interface statemachine.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_stopped(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, CH_STATE_STOPPED);
+ if (ch->trans_skb != NULL) {
+ clear_normalized_cda(&ch->ccw[1]);
+ dev_kfree_skb(ch->trans_skb);
+ ch->trans_skb = NULL;
+ }
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ skb_queue_purge(&ch->io_queue);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_RXDOWN, dev);
+ } else {
+ ctc_purge_skb_queue(&ch->io_queue);
+ spin_lock(&ch->collect_lock);
+ ctc_purge_skb_queue(&ch->collect_queue);
+ ch->collect_len = 0;
+ spin_unlock(&ch->collect_lock);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ }
+}
+
+/**
+ * A stop command from device statemachine arrived and we are in
+ * not operational mode. Set state to stopped.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_stop(fsm_instance * fi, int event, void *arg)
+{
+ fsm_newstate(fi, CH_STATE_STOPPED);
+}
+
+/**
+ * A machine check for no path, not operational status or gone device has
+ * happened.
+ * Cleanup queue and notify interface statemachine.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_fail(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, CH_STATE_NOTOP);
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ skb_queue_purge(&ch->io_queue);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_RXDOWN, dev);
+ } else {
+ ctc_purge_skb_queue(&ch->io_queue);
+ spin_lock(&ch->collect_lock);
+ ctc_purge_skb_queue(&ch->collect_queue);
+ ch->collect_len = 0;
+ spin_unlock(&ch->collect_lock);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ }
+}
+
+/**
+ * Handle error during setup of channel.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_setuperr(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+ /**
+ * Special case: Got UC_RCRESET on setmode.
+ * This means that remote side isn't setup. In this case
+ * simply retry after some 10 secs...
+ */
+ if ((fsm_getstate(fi) == CH_STATE_SETUPWAIT) &&
+ ((event == CH_EVENT_UC_RCRESET) ||
+ (event == CH_EVENT_UC_RSRESET))) {
+ fsm_newstate(fi, CH_STATE_STARTRETRY);
+ fsm_deltimer(&ch->timer);
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ int rc = ccw_device_halt(ch->cdev, (unsigned long) ch);
+ if (rc != 0)
+ ccw_check_return_code(
+ ch, rc, "HaltIO in ch_action_setuperr");
+ }
+ return;
+ }
+
+ ctc_pr_debug("%s: Error %s during %s channel setup state=%s\n",
+ dev->name, ch_event_names[event],
+ (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX",
+ fsm_getstate_str(fi));
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ fsm_newstate(fi, CH_STATE_RXERR);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_RXDOWN, dev);
+ } else {
+ fsm_newstate(fi, CH_STATE_TXERR);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ }
+}
+
+/**
+ * Restart a channel after an error.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_restart(fsm_instance * fi, int event, void *arg)
+{
+ unsigned long saveflags;
+ int oldstate;
+ int rc;
+
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ ctc_pr_debug("%s: %s channel restart\n", dev->name,
+ (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX");
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+ oldstate = fsm_getstate(fi);
+ fsm_newstate(fi, CH_STATE_STARTWAIT);
+ saveflags = 0; /* avoids compiler warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_TIMER) // only for timer not yet locked
+ spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
+ rc = ccw_device_halt(ch->cdev, (unsigned long) ch);
+ if (event == CH_EVENT_TIMER)
+ spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
+ if (rc != 0) {
+ if (rc != -EBUSY) {
+ fsm_deltimer(&ch->timer);
+ fsm_newstate(fi, oldstate);
+ }
+ ccw_check_return_code(ch, rc, "HaltIO in ch_action_restart");
+ }
+}
+
+/**
+ * Handle error during RX initial handshake (exchange of
+ * 0-length block header)
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_rxiniterr(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+ if (event == CH_EVENT_TIMER) {
+ fsm_deltimer(&ch->timer);
+ ctc_pr_debug("%s: Timeout during RX init handshake\n", dev->name);
+ if (ch->retry++ < 3)
+ ch_action_restart(fi, event, arg);
+ else {
+ fsm_newstate(fi, CH_STATE_RXERR);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_RXDOWN, dev);
+ }
+ } else
+ ctc_pr_warn("%s: Error during RX init handshake\n", dev->name);
+}
+
+/**
+ * Notify device statemachine if we gave up initialization
+ * of RX channel.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_rxinitfail(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+ fsm_newstate(fi, CH_STATE_RXERR);
+ ctc_pr_warn("%s: RX initialization failed\n", dev->name);
+ ctc_pr_warn("%s: RX <-> RX connection detected\n", dev->name);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_RXDOWN, dev);
+}
+
+/**
+ * Handle RX Unit check remote reset (remote disconnected)
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_rxdisc(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct channel *ch2;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ ctc_pr_debug("%s: Got remote disconnect, re-initializing ...\n",
+ dev->name);
+
+ /**
+ * Notify device statemachine
+ */
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_RXDOWN, dev);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_TXDOWN, dev);
+
+ fsm_newstate(fi, CH_STATE_DTERM);
+ ch2 = ((struct ctc_priv *) dev->priv)->channel[WRITE];
+ fsm_newstate(ch2->fsm, CH_STATE_DTERM);
+
+ ccw_device_halt(ch->cdev, (unsigned long) ch);
+ ccw_device_halt(ch2->cdev, (unsigned long) ch2);
+}
+
+/**
+ * Handle error during TX channel initialization.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_txiniterr(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(setup, 2, __FUNCTION__);
+ if (event == CH_EVENT_TIMER) {
+ fsm_deltimer(&ch->timer);
+ ctc_pr_debug("%s: Timeout during TX init handshake\n", dev->name);
+ if (ch->retry++ < 3)
+ ch_action_restart(fi, event, arg);
+ else {
+ fsm_newstate(fi, CH_STATE_TXERR);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ }
+ } else
+ ctc_pr_warn("%s: Error during TX init handshake\n", dev->name);
+}
+
+/**
+ * Handle TX timeout by retrying operation.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_txretry(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+ unsigned long saveflags;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ if (ch->retry++ > 3) {
+ ctc_pr_debug("%s: TX retry failed, restarting channel\n",
+ dev->name);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ ch_action_restart(fi, event, arg);
+ } else {
+ struct sk_buff *skb;
+
+ ctc_pr_debug("%s: TX retry %d\n", dev->name, ch->retry);
+ if ((skb = skb_peek(&ch->io_queue))) {
+ int rc = 0;
+
+ clear_normalized_cda(&ch->ccw[4]);
+ ch->ccw[4].count = skb->len;
+ if (set_normalized_cda(&ch->ccw[4], skb->data)) {
+ ctc_pr_debug(
+ "%s: IDAL alloc failed, chan restart\n",
+ dev->name);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ ch_action_restart(fi, event, arg);
+ return;
+ }
+ fsm_addtimer(&ch->timer, 1000, CH_EVENT_TIMER, ch);
+ saveflags = 0; /* avoids compiler warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_TIMER) // only for TIMER not yet locked
+ spin_lock_irqsave(get_ccwdev_lock(ch->cdev),
+ saveflags);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[3],
+ (unsigned long) ch, 0xff, 0);
+ if (event == CH_EVENT_TIMER)
+ spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev),
+ saveflags);
+ if (rc != 0) {
+ fsm_deltimer(&ch->timer);
+ ccw_check_return_code(ch, rc, "TX in ch_action_txretry");
+ ctc_purge_skb_queue(&ch->io_queue);
+ }
+ }
+ }
+
+}
+
+/**
+ * Handle fatal errors during an I/O command.
+ *
+ * @param fi An instance of a channel statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from channel * upon call.
+ */
+static void
+ch_action_iofatal(fsm_instance * fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *) arg;
+ struct net_device *dev = ch->netdev;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_deltimer(&ch->timer);
+ if (CHANNEL_DIRECTION(ch->flags) == READ) {
+ ctc_pr_debug("%s: RX I/O error\n", dev->name);
+ fsm_newstate(fi, CH_STATE_RXERR);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_RXDOWN, dev);
+ } else {
+ ctc_pr_debug("%s: TX I/O error\n", dev->name);
+ fsm_newstate(fi, CH_STATE_TXERR);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm,
+ DEV_EVENT_TXDOWN, dev);
+ }
+}
+
+static void
+ch_action_reinit(fsm_instance *fi, int event, void *arg)
+{
+ struct channel *ch = (struct channel *)arg;
+ struct net_device *dev = ch->netdev;
+ struct ctc_priv *privptr = dev->priv;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ ch_action_iofatal(fi, event, arg);
+ fsm_addtimer(&privptr->restart_timer, 1000, DEV_EVENT_RESTART, dev);
+}
+
+
+/**
+ * The statemachine for a channel.
+ */
+static const fsm_node ch_fsm[] = {
+ {CH_STATE_STOPPED, CH_EVENT_STOP, fsm_action_nop },
+ {CH_STATE_STOPPED, CH_EVENT_START, ch_action_start },
+ {CH_STATE_STOPPED, CH_EVENT_FINSTAT, fsm_action_nop },
+ {CH_STATE_STOPPED, CH_EVENT_MC_FAIL, fsm_action_nop },
+
+ {CH_STATE_NOTOP, CH_EVENT_STOP, ch_action_stop },
+ {CH_STATE_NOTOP, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_NOTOP, CH_EVENT_FINSTAT, fsm_action_nop },
+ {CH_STATE_NOTOP, CH_EVENT_MC_FAIL, fsm_action_nop },
+ {CH_STATE_NOTOP, CH_EVENT_MC_GOOD, ch_action_start },
+
+ {CH_STATE_STARTWAIT, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_STARTWAIT, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_STARTWAIT, CH_EVENT_FINSTAT, ch_action_setmode },
+ {CH_STATE_STARTWAIT, CH_EVENT_TIMER, ch_action_setuperr },
+ {CH_STATE_STARTWAIT, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_STARTWAIT, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_STARTWAIT, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_STARTRETRY, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_STARTRETRY, CH_EVENT_TIMER, ch_action_setmode },
+ {CH_STATE_STARTRETRY, CH_EVENT_FINSTAT, fsm_action_nop },
+ {CH_STATE_STARTRETRY, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_SETUPWAIT, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_SETUPWAIT, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_SETUPWAIT, CH_EVENT_FINSTAT, ch_action_firstio },
+ {CH_STATE_SETUPWAIT, CH_EVENT_UC_RCRESET, ch_action_setuperr },
+ {CH_STATE_SETUPWAIT, CH_EVENT_UC_RSRESET, ch_action_setuperr },
+ {CH_STATE_SETUPWAIT, CH_EVENT_TIMER, ch_action_setmode },
+ {CH_STATE_SETUPWAIT, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_SETUPWAIT, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_SETUPWAIT, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_RXINIT, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_RXINIT, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_RXINIT, CH_EVENT_FINSTAT, ch_action_rxidle },
+ {CH_STATE_RXINIT, CH_EVENT_UC_RCRESET, ch_action_rxiniterr },
+ {CH_STATE_RXINIT, CH_EVENT_UC_RSRESET, ch_action_rxiniterr },
+ {CH_STATE_RXINIT, CH_EVENT_TIMER, ch_action_rxiniterr },
+ {CH_STATE_RXINIT, CH_EVENT_ATTNBUSY, ch_action_rxinitfail },
+ {CH_STATE_RXINIT, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_RXINIT, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_RXINIT, CH_EVENT_UC_ZERO, ch_action_firstio },
+ {CH_STATE_RXINIT, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_RXIDLE, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_RXIDLE, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_RXIDLE, CH_EVENT_FINSTAT, ch_action_rx },
+ {CH_STATE_RXIDLE, CH_EVENT_UC_RCRESET, ch_action_rxdisc },
+// {CH_STATE_RXIDLE, CH_EVENT_UC_RSRESET, ch_action_rxretry },
+ {CH_STATE_RXIDLE, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_RXIDLE, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_RXIDLE, CH_EVENT_MC_FAIL, ch_action_fail },
+ {CH_STATE_RXIDLE, CH_EVENT_UC_ZERO, ch_action_rx },
+
+ {CH_STATE_TXINIT, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_TXINIT, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_TXINIT, CH_EVENT_FINSTAT, ch_action_txidle },
+ {CH_STATE_TXINIT, CH_EVENT_UC_RCRESET, ch_action_txiniterr },
+ {CH_STATE_TXINIT, CH_EVENT_UC_RSRESET, ch_action_txiniterr },
+ {CH_STATE_TXINIT, CH_EVENT_TIMER, ch_action_txiniterr },
+ {CH_STATE_TXINIT, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_TXINIT, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_TXINIT, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_TXIDLE, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_TXIDLE, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_TXIDLE, CH_EVENT_FINSTAT, ch_action_firstio },
+ {CH_STATE_TXIDLE, CH_EVENT_UC_RCRESET, fsm_action_nop },
+ {CH_STATE_TXIDLE, CH_EVENT_UC_RSRESET, fsm_action_nop },
+ {CH_STATE_TXIDLE, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_TXIDLE, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_TXIDLE, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_TERM, CH_EVENT_STOP, fsm_action_nop },
+ {CH_STATE_TERM, CH_EVENT_START, ch_action_restart },
+ {CH_STATE_TERM, CH_EVENT_FINSTAT, ch_action_stopped },
+ {CH_STATE_TERM, CH_EVENT_UC_RCRESET, fsm_action_nop },
+ {CH_STATE_TERM, CH_EVENT_UC_RSRESET, fsm_action_nop },
+ {CH_STATE_TERM, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_DTERM, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_DTERM, CH_EVENT_START, ch_action_restart },
+ {CH_STATE_DTERM, CH_EVENT_FINSTAT, ch_action_setmode },
+ {CH_STATE_DTERM, CH_EVENT_UC_RCRESET, fsm_action_nop },
+ {CH_STATE_DTERM, CH_EVENT_UC_RSRESET, fsm_action_nop },
+ {CH_STATE_DTERM, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_TX, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_TX, CH_EVENT_START, fsm_action_nop },
+ {CH_STATE_TX, CH_EVENT_FINSTAT, ch_action_txdone },
+ {CH_STATE_TX, CH_EVENT_UC_RCRESET, ch_action_txretry },
+ {CH_STATE_TX, CH_EVENT_UC_RSRESET, ch_action_txretry },
+ {CH_STATE_TX, CH_EVENT_TIMER, ch_action_txretry },
+ {CH_STATE_TX, CH_EVENT_IO_ENODEV, ch_action_iofatal },
+ {CH_STATE_TX, CH_EVENT_IO_EIO, ch_action_reinit },
+ {CH_STATE_TX, CH_EVENT_MC_FAIL, ch_action_fail },
+
+ {CH_STATE_RXERR, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_TXERR, CH_EVENT_STOP, ch_action_haltio },
+ {CH_STATE_TXERR, CH_EVENT_MC_FAIL, ch_action_fail },
+ {CH_STATE_RXERR, CH_EVENT_MC_FAIL, ch_action_fail },
+};
+
+static const int CH_FSM_LEN = sizeof (ch_fsm) / sizeof (fsm_node);
+
+/**
+ * Functions related to setup and device detection.
+ *****************************************************************************/
+
+static inline int
+less_than(char *id1, char *id2)
+{
+ int dev1, dev2, i;
+
+ for (i = 0; i < 5; i++) {
+ id1++;
+ id2++;
+ }
+ dev1 = simple_strtoul(id1, &id1, 16);
+ dev2 = simple_strtoul(id2, &id2, 16);
+
+ return (dev1 < dev2);
+}
+
+/**
+ * Add a new channel to the list of channels.
+ * Keeps the channel list sorted.
+ *
+ * @param cdev The ccw_device to be added.
+ * @param type The type class of the new channel.
+ *
+ * @return 0 on success, !0 on error.
+ */
+static int
+add_channel(struct ccw_device *cdev, enum channel_types type)
+{
+ struct channel **c = &channels;
+ struct channel *ch;
+
+ DBF_TEXT(trace, 2, __FUNCTION__);
+ if ((ch =
+ (struct channel *) kmalloc(sizeof (struct channel),
+ GFP_KERNEL)) == NULL) {
+ ctc_pr_warn("ctc: Out of memory in add_channel\n");
+ return -1;
+ }
+ memset(ch, 0, sizeof (struct channel));
+ if ((ch->ccw = (struct ccw1 *) kmalloc(8*sizeof(struct ccw1),
+ GFP_KERNEL | GFP_DMA)) == NULL) {
+ kfree(ch);
+ ctc_pr_warn("ctc: Out of memory in add_channel\n");
+ return -1;
+ }
+
+ memset(ch->ccw, 0, 8*sizeof(struct ccw1)); // assure all flags and counters are reset
+
+ /**
+ * "static" ccws are used in the following way:
+ *
+ * ccw[0..2] (Channel program for generic I/O):
+ * 0: prepare
+ * 1: read or write (depending on direction) with fixed
+ * buffer (idal allocated once when buffer is allocated)
+ * 2: nop
+ * ccw[3..5] (Channel program for direct write of packets)
+ * 3: prepare
+ * 4: write (idal allocated on every write).
+ * 5: nop
+ * ccw[6..7] (Channel program for initial channel setup):
+ * 6: set extended mode
+ * 7: nop
+ *
+ * ch->ccw[0..5] are initialized in ch_action_start because
+ * the channel's direction is yet unknown here.
+ */
+ ch->ccw[6].cmd_code = CCW_CMD_SET_EXTENDED;
+ ch->ccw[6].flags = CCW_FLAG_SLI;
+
+ ch->ccw[7].cmd_code = CCW_CMD_NOOP;
+ ch->ccw[7].flags = CCW_FLAG_SLI;
+
+ ch->cdev = cdev;
+ snprintf(ch->id, CTC_ID_SIZE, "ch-%s", cdev->dev.bus_id);
+ ch->type = type;
+ loglevel = CTC_LOGLEVEL_DEFAULT;
+ ch->fsm = init_fsm(ch->id, ch_state_names,
+ ch_event_names, NR_CH_STATES, NR_CH_EVENTS,
+ ch_fsm, CH_FSM_LEN, GFP_KERNEL);
+ if (ch->fsm == NULL) {
+ ctc_pr_warn("ctc: Could not create FSM in add_channel\n");
+ kfree(ch->ccw);
+ kfree(ch);
+ return -1;
+ }
+ fsm_newstate(ch->fsm, CH_STATE_IDLE);
+ if ((ch->irb = (struct irb *) kmalloc(sizeof (struct irb),
+ GFP_KERNEL)) == NULL) {
+ ctc_pr_warn("ctc: Out of memory in add_channel\n");
+ kfree_fsm(ch->fsm);
+ kfree(ch->ccw);
+ kfree(ch);
+ return -1;
+ }
+ memset(ch->irb, 0, sizeof (struct irb));
+ while (*c && less_than((*c)->id, ch->id))
+ c = &(*c)->next;
+ if (*c && (!strncmp((*c)->id, ch->id, CTC_ID_SIZE))) {
+ ctc_pr_debug(
+ "ctc: add_channel: device %s already in list, "
+ "using old entry\n", (*c)->id);
+ kfree(ch->irb);
+ kfree_fsm(ch->fsm);
+ kfree(ch->ccw);
+ kfree(ch);
+ return 0;
+ }
+ fsm_settimer(ch->fsm, &ch->timer);
+ skb_queue_head_init(&ch->io_queue);
+ skb_queue_head_init(&ch->collect_queue);
+ ch->next = *c;
+ *c = ch;
+ return 0;
+}
+
+/**
+ * Release a specific channel in the channel list.
+ *
+ * @param ch Pointer to channel struct to be released.
+ */
+static void
+channel_free(struct channel *ch)
+{
+ ch->flags &= ~CHANNEL_FLAGS_INUSE;
+ fsm_newstate(ch->fsm, CH_STATE_IDLE);
+}
+
+/**
+ * Remove a specific channel in the channel list.
+ *
+ * @param ch Pointer to channel struct to be released.
+ */
+static void
+channel_remove(struct channel *ch)
+{
+ struct channel **c = &channels;
+
+ DBF_TEXT(trace, 2, __FUNCTION__);
+ if (ch == NULL)
+ return;
+
+ channel_free(ch);
+ while (*c) {
+ if (*c == ch) {
+ *c = ch->next;
+ fsm_deltimer(&ch->timer);
+ kfree_fsm(ch->fsm);
+ clear_normalized_cda(&ch->ccw[4]);
+ if (ch->trans_skb != NULL) {
+ clear_normalized_cda(&ch->ccw[1]);
+ dev_kfree_skb(ch->trans_skb);
+ }
+ kfree(ch->ccw);
+ kfree(ch->irb);
+ kfree(ch);
+ return;
+ }
+ c = &((*c)->next);
+ }
+}
+
+/**
+ * Get a specific channel from the channel list.
+ *
+ * @param type Type of channel we are interested in.
+ * @param id Id of channel we are interested in.
+ * @param direction Direction we want to use this channel for.
+ *
+ * @return Pointer to a channel or NULL if no matching channel available.
+ */
+static struct channel
+*
+channel_get(enum channel_types type, char *id, int direction)
+{
+ struct channel *ch = channels;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+#ifdef DEBUG
+ ctc_pr_debug("ctc: %s(): searching for ch with id %s and type %d\n",
+ __func__, id, type);
+#endif
+
+ while (ch && ((strncmp(ch->id, id, CTC_ID_SIZE)) || (ch->type != type))) {
+#ifdef DEBUG
+ ctc_pr_debug("ctc: %s(): ch=0x%p (id=%s, type=%d\n",
+ __func__, ch, ch->id, ch->type);
+#endif
+ ch = ch->next;
+ }
+#ifdef DEBUG
+ ctc_pr_debug("ctc: %s(): ch=0x%pq (id=%s, type=%d\n",
+ __func__, ch, ch->id, ch->type);
+#endif
+ if (!ch) {
+ ctc_pr_warn("ctc: %s(): channel with id %s "
+ "and type %d not found in channel list\n",
+ __func__, id, type);
+ } else {
+ if (ch->flags & CHANNEL_FLAGS_INUSE)
+ ch = NULL;
+ else {
+ ch->flags |= CHANNEL_FLAGS_INUSE;
+ ch->flags &= ~CHANNEL_FLAGS_RWMASK;
+ ch->flags |= (direction == WRITE)
+ ? CHANNEL_FLAGS_WRITE : CHANNEL_FLAGS_READ;
+ fsm_newstate(ch->fsm, CH_STATE_STOPPED);
+ }
+ }
+ return ch;
+}
+
+/**
+ * Return the channel type by name.
+ *
+ * @param name Name of network interface.
+ *
+ * @return Type class of channel to be used for that interface.
+ */
+static enum channel_types inline
+extract_channel_media(char *name)
+{
+ enum channel_types ret = channel_type_unknown;
+
+ if (name != NULL) {
+ if (strncmp(name, "ctc", 3) == 0)
+ ret = channel_type_parallel;
+ if (strncmp(name, "escon", 5) == 0)
+ ret = channel_type_escon;
+ }
+ return ret;
+}
+
+static long
+__ctc_check_irb_error(struct ccw_device *cdev, struct irb *irb)
+{
+ if (!IS_ERR(irb))
+ return 0;
+
+ switch (PTR_ERR(irb)) {
+ case -EIO:
+ ctc_pr_warn("i/o-error on device %s\n", cdev->dev.bus_id);
+// CTC_DBF_TEXT(trace, 2, "ckirberr");
+// CTC_DBF_TEXT_(trace, 2, " rc%d", -EIO);
+ break;
+ case -ETIMEDOUT:
+ ctc_pr_warn("timeout on device %s\n", cdev->dev.bus_id);
+// CTC_DBF_TEXT(trace, 2, "ckirberr");
+// CTC_DBF_TEXT_(trace, 2, " rc%d", -ETIMEDOUT);
+ break;
+ default:
+ ctc_pr_warn("unknown error %ld on device %s\n", PTR_ERR(irb),
+ cdev->dev.bus_id);
+// CTC_DBF_TEXT(trace, 2, "ckirberr");
+// CTC_DBF_TEXT(trace, 2, " rc???");
+ }
+ return PTR_ERR(irb);
+}
+
+/**
+ * Main IRQ handler.
+ *
+ * @param cdev The ccw_device the interrupt is for.
+ * @param intparm interruption parameter.
+ * @param irb interruption response block.
+ */
+static void
+ctc_irq_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
+{
+ struct channel *ch;
+ struct net_device *dev;
+ struct ctc_priv *priv;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if (__ctc_check_irb_error(cdev, irb))
+ return;
+
+ /* Check for unsolicited interrupts. */
+ if (!cdev->dev.driver_data) {
+ ctc_pr_warn("ctc: Got unsolicited irq: %s c-%02x d-%02x\n",
+ cdev->dev.bus_id, irb->scsw.cstat,
+ irb->scsw.dstat);
+ return;
+ }
+
+ priv = ((struct ccwgroup_device *)cdev->dev.driver_data)
+ ->dev.driver_data;
+
+ /* Try to extract channel from driver data. */
+ if (priv->channel[READ]->cdev == cdev)
+ ch = priv->channel[READ];
+ else if (priv->channel[WRITE]->cdev == cdev)
+ ch = priv->channel[WRITE];
+ else {
+ ctc_pr_err("ctc: Can't determine channel for interrupt, "
+ "device %s\n", cdev->dev.bus_id);
+ return;
+ }
+
+ dev = (struct net_device *) (ch->netdev);
+ if (dev == NULL) {
+ ctc_pr_crit("ctc: ctc_irq_handler dev=NULL bus_id=%s, ch=0x%p\n",
+ cdev->dev.bus_id, ch);
+ return;
+ }
+
+#ifdef DEBUG
+ ctc_pr_debug("%s: interrupt for device: %s received c-%02x d-%02x\n",
+ dev->name, ch->id, irb->scsw.cstat, irb->scsw.dstat);
+#endif
+
+ /* Copy interruption response block. */
+ memcpy(ch->irb, irb, sizeof(struct irb));
+
+ /* Check for good subchannel return code, otherwise error message */
+ if (ch->irb->scsw.cstat) {
+ fsm_event(ch->fsm, CH_EVENT_SC_UNKNOWN, ch);
+ ctc_pr_warn("%s: subchannel check for device: %s - %02x %02x\n",
+ dev->name, ch->id, ch->irb->scsw.cstat,
+ ch->irb->scsw.dstat);
+ return;
+ }
+
+ /* Check the reason-code of a unit check */
+ if (ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+ ccw_unit_check(ch, ch->irb->ecw[0]);
+ return;
+ }
+ if (ch->irb->scsw.dstat & DEV_STAT_BUSY) {
+ if (ch->irb->scsw.dstat & DEV_STAT_ATTENTION)
+ fsm_event(ch->fsm, CH_EVENT_ATTNBUSY, ch);
+ else
+ fsm_event(ch->fsm, CH_EVENT_BUSY, ch);
+ return;
+ }
+ if (ch->irb->scsw.dstat & DEV_STAT_ATTENTION) {
+ fsm_event(ch->fsm, CH_EVENT_ATTN, ch);
+ return;
+ }
+ if ((ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
+ (ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
+ (ch->irb->scsw.stctl ==
+ (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))
+ fsm_event(ch->fsm, CH_EVENT_FINSTAT, ch);
+ else
+ fsm_event(ch->fsm, CH_EVENT_IRQ, ch);
+
+}
+
+/**
+ * Actions for interface - statemachine.
+ *****************************************************************************/
+
+/**
+ * Startup channels by sending CH_EVENT_START to each channel.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_start(fsm_instance * fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *) arg;
+ struct ctc_priv *privptr = dev->priv;
+ int direction;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+ fsm_deltimer(&privptr->restart_timer);
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
+ for (direction = READ; direction <= WRITE; direction++) {
+ struct channel *ch = privptr->channel[direction];
+ fsm_event(ch->fsm, CH_EVENT_START, ch);
+ }
+}
+
+/**
+ * Shutdown channels by sending CH_EVENT_STOP to each channel.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_stop(fsm_instance * fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *) arg;
+ struct ctc_priv *privptr = dev->priv;
+ int direction;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
+ for (direction = READ; direction <= WRITE; direction++) {
+ struct channel *ch = privptr->channel[direction];
+ fsm_event(ch->fsm, CH_EVENT_STOP, ch);
+ }
+}
+static void
+dev_action_restart(fsm_instance *fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct ctc_priv *privptr = dev->priv;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ ctc_pr_debug("%s: Restarting\n", dev->name);
+ dev_action_stop(fi, event, arg);
+ fsm_event(privptr->fsm, DEV_EVENT_STOP, dev);
+ fsm_addtimer(&privptr->restart_timer, CTC_TIMEOUT_5SEC,
+ DEV_EVENT_START, dev);
+}
+
+/**
+ * Called from channel statemachine
+ * when a channel is up and running.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_chup(fsm_instance * fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *) arg;
+ struct ctc_priv *privptr = dev->priv;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ switch (fsm_getstate(fi)) {
+ case DEV_STATE_STARTWAIT_RXTX:
+ if (event == DEV_EVENT_RXUP)
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_TX);
+ else
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_RX);
+ break;
+ case DEV_STATE_STARTWAIT_RX:
+ if (event == DEV_EVENT_RXUP) {
+ fsm_newstate(fi, DEV_STATE_RUNNING);
+ ctc_pr_info("%s: connected with remote side\n",
+ dev->name);
+ if (privptr->protocol == CTC_PROTO_LINUX_TTY)
+ ctc_tty_setcarrier(dev, 1);
+ ctc_clear_busy(dev);
+ }
+ break;
+ case DEV_STATE_STARTWAIT_TX:
+ if (event == DEV_EVENT_TXUP) {
+ fsm_newstate(fi, DEV_STATE_RUNNING);
+ ctc_pr_info("%s: connected with remote side\n",
+ dev->name);
+ if (privptr->protocol == CTC_PROTO_LINUX_TTY)
+ ctc_tty_setcarrier(dev, 1);
+ ctc_clear_busy(dev);
+ }
+ break;
+ case DEV_STATE_STOPWAIT_TX:
+ if (event == DEV_EVENT_RXUP)
+ fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
+ break;
+ case DEV_STATE_STOPWAIT_RX:
+ if (event == DEV_EVENT_TXUP)
+ fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
+ break;
+ }
+}
+
+/**
+ * Called from channel statemachine
+ * when a channel has been shutdown.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_chdown(fsm_instance * fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *) arg;
+ struct ctc_priv *privptr = dev->priv;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ switch (fsm_getstate(fi)) {
+ case DEV_STATE_RUNNING:
+ if (privptr->protocol == CTC_PROTO_LINUX_TTY)
+ ctc_tty_setcarrier(dev, 0);
+ if (event == DEV_EVENT_TXDOWN)
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_TX);
+ else
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_RX);
+ break;
+ case DEV_STATE_STARTWAIT_RX:
+ if (event == DEV_EVENT_TXDOWN)
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
+ break;
+ case DEV_STATE_STARTWAIT_TX:
+ if (event == DEV_EVENT_RXDOWN)
+ fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
+ break;
+ case DEV_STATE_STOPWAIT_RXTX:
+ if (event == DEV_EVENT_TXDOWN)
+ fsm_newstate(fi, DEV_STATE_STOPWAIT_RX);
+ else
+ fsm_newstate(fi, DEV_STATE_STOPWAIT_TX);
+ break;
+ case DEV_STATE_STOPWAIT_RX:
+ if (event == DEV_EVENT_RXDOWN)
+ fsm_newstate(fi, DEV_STATE_STOPPED);
+ break;
+ case DEV_STATE_STOPWAIT_TX:
+ if (event == DEV_EVENT_TXDOWN)
+ fsm_newstate(fi, DEV_STATE_STOPPED);
+ break;
+ }
+}
+
+static const fsm_node dev_fsm[] = {
+ {DEV_STATE_STOPPED, DEV_EVENT_START, dev_action_start},
+
+ {DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_START, dev_action_start },
+ {DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_RXDOWN, dev_action_chdown },
+ {DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_TXDOWN, dev_action_chdown },
+ {DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_RESTART, dev_action_restart },
+
+ {DEV_STATE_STOPWAIT_RX, DEV_EVENT_START, dev_action_start },
+ {DEV_STATE_STOPWAIT_RX, DEV_EVENT_RXUP, dev_action_chup },
+ {DEV_STATE_STOPWAIT_RX, DEV_EVENT_TXUP, dev_action_chup },
+ {DEV_STATE_STOPWAIT_RX, DEV_EVENT_RXDOWN, dev_action_chdown },
+ {DEV_STATE_STOPWAIT_RX, DEV_EVENT_RESTART, dev_action_restart },
+
+ {DEV_STATE_STOPWAIT_TX, DEV_EVENT_START, dev_action_start },
+ {DEV_STATE_STOPWAIT_TX, DEV_EVENT_RXUP, dev_action_chup },
+ {DEV_STATE_STOPWAIT_TX, DEV_EVENT_TXUP, dev_action_chup },
+ {DEV_STATE_STOPWAIT_TX, DEV_EVENT_TXDOWN, dev_action_chdown },
+ {DEV_STATE_STOPWAIT_TX, DEV_EVENT_RESTART, dev_action_restart },
+
+ {DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_STOP, dev_action_stop },
+ {DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_RXUP, dev_action_chup },
+ {DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_TXUP, dev_action_chup },
+ {DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_RXDOWN, dev_action_chdown },
+ {DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_TXDOWN, dev_action_chdown },
+ {DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_RESTART, dev_action_restart },
+
+ {DEV_STATE_STARTWAIT_TX, DEV_EVENT_STOP, dev_action_stop },
+ {DEV_STATE_STARTWAIT_TX, DEV_EVENT_RXUP, dev_action_chup },
+ {DEV_STATE_STARTWAIT_TX, DEV_EVENT_TXUP, dev_action_chup },
+ {DEV_STATE_STARTWAIT_TX, DEV_EVENT_RXDOWN, dev_action_chdown },
+ {DEV_STATE_STARTWAIT_TX, DEV_EVENT_RESTART, dev_action_restart },
+
+ {DEV_STATE_STARTWAIT_RX, DEV_EVENT_STOP, dev_action_stop },
+ {DEV_STATE_STARTWAIT_RX, DEV_EVENT_RXUP, dev_action_chup },
+ {DEV_STATE_STARTWAIT_RX, DEV_EVENT_TXUP, dev_action_chup },
+ {DEV_STATE_STARTWAIT_RX, DEV_EVENT_TXDOWN, dev_action_chdown },
+ {DEV_STATE_STARTWAIT_RX, DEV_EVENT_RESTART, dev_action_restart },
+
+ {DEV_STATE_RUNNING, DEV_EVENT_STOP, dev_action_stop },
+ {DEV_STATE_RUNNING, DEV_EVENT_RXDOWN, dev_action_chdown },
+ {DEV_STATE_RUNNING, DEV_EVENT_TXDOWN, dev_action_chdown },
+ {DEV_STATE_RUNNING, DEV_EVENT_TXUP, fsm_action_nop },
+ {DEV_STATE_RUNNING, DEV_EVENT_RXUP, fsm_action_nop },
+ {DEV_STATE_RUNNING, DEV_EVENT_RESTART, dev_action_restart },
+};
+
+static const int DEV_FSM_LEN = sizeof (dev_fsm) / sizeof (fsm_node);
+
+/**
+ * Transmit a packet.
+ * This is a helper function for ctc_tx().
+ *
+ * @param ch Channel to be used for sending.
+ * @param skb Pointer to struct sk_buff of packet to send.
+ * The linklevel header has already been set up
+ * by ctc_tx().
+ *
+ * @return 0 on success, -ERRNO on failure. (Never fails.)
+ */
+static int
+transmit_skb(struct channel *ch, struct sk_buff *skb)
+{
+ unsigned long saveflags;
+ struct ll_header header;
+ int rc = 0;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if (fsm_getstate(ch->fsm) != CH_STATE_TXIDLE) {
+ int l = skb->len + LL_HEADER_LENGTH;
+
+ spin_lock_irqsave(&ch->collect_lock, saveflags);
+ if (ch->collect_len + l > ch->max_bufsize - 2)
+ rc = -EBUSY;
+ else {
+ atomic_inc(&skb->users);
+ header.length = l;
+ header.type = skb->protocol;
+ header.unused = 0;
+ memcpy(skb_push(skb, LL_HEADER_LENGTH), &header,
+ LL_HEADER_LENGTH);
+ skb_queue_tail(&ch->collect_queue, skb);
+ ch->collect_len += l;
+ }
+ spin_unlock_irqrestore(&ch->collect_lock, saveflags);
+ } else {
+ __u16 block_len;
+ int ccw_idx;
+ struct sk_buff *nskb;
+ unsigned long hi;
+
+ /**
+ * Protect skb against beeing free'd by upper
+ * layers.
+ */
+ atomic_inc(&skb->users);
+ ch->prof.txlen += skb->len;
+ header.length = skb->len + LL_HEADER_LENGTH;
+ header.type = skb->protocol;
+ header.unused = 0;
+ memcpy(skb_push(skb, LL_HEADER_LENGTH), &header,
+ LL_HEADER_LENGTH);
+ block_len = skb->len + 2;
+ *((__u16 *) skb_push(skb, 2)) = block_len;
+
+ /**
+ * IDAL support in CTC is broken, so we have to
+ * care about skb's above 2G ourselves.
+ */
+ hi = ((unsigned long) skb->tail + LL_HEADER_LENGTH) >> 31;
+ if (hi) {
+ nskb = alloc_skb(skb->len, GFP_ATOMIC | GFP_DMA);
+ if (!nskb) {
+ atomic_dec(&skb->users);
+ skb_pull(skb, LL_HEADER_LENGTH + 2);
+ return -ENOMEM;
+ } else {
+ memcpy(skb_put(nskb, skb->len),
+ skb->data, skb->len);
+ atomic_inc(&nskb->users);
+ atomic_dec(&skb->users);
+ dev_kfree_skb_irq(skb);
+ skb = nskb;
+ }
+ }
+
+ ch->ccw[4].count = block_len;
+ if (set_normalized_cda(&ch->ccw[4], skb->data)) {
+ /**
+ * idal allocation failed, try via copying to
+ * trans_skb. trans_skb usually has a pre-allocated
+ * idal.
+ */
+ if (ctc_checkalloc_buffer(ch, 1)) {
+ /**
+ * Remove our header. It gets added
+ * again on retransmit.
+ */
+ atomic_dec(&skb->users);
+ skb_pull(skb, LL_HEADER_LENGTH + 2);
+ return -EBUSY;
+ }
+
+ ch->trans_skb->tail = ch->trans_skb->data;
+ ch->trans_skb->len = 0;
+ ch->ccw[1].count = skb->len;
+ memcpy(skb_put(ch->trans_skb, skb->len), skb->data,
+ skb->len);
+ atomic_dec(&skb->users);
+ dev_kfree_skb_irq(skb);
+ ccw_idx = 0;
+ } else {
+ skb_queue_tail(&ch->io_queue, skb);
+ ccw_idx = 3;
+ }
+ ch->retry = 0;
+ fsm_newstate(ch->fsm, CH_STATE_TX);
+ fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
+ spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
+ ch->prof.send_stamp = xtime;
+ rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx],
+ (unsigned long) ch, 0xff, 0);
+ spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
+ if (ccw_idx == 3)
+ ch->prof.doios_single++;
+ if (rc != 0) {
+ fsm_deltimer(&ch->timer);
+ ccw_check_return_code(ch, rc, "single skb TX");
+ if (ccw_idx == 3)
+ skb_dequeue_tail(&ch->io_queue);
+ /**
+ * Remove our header. It gets added
+ * again on retransmit.
+ */
+ skb_pull(skb, LL_HEADER_LENGTH + 2);
+ } else {
+ if (ccw_idx == 0) {
+ struct net_device *dev = ch->netdev;
+ struct ctc_priv *privptr = dev->priv;
+ privptr->stats.tx_packets++;
+ privptr->stats.tx_bytes +=
+ skb->len - LL_HEADER_LENGTH;
+ }
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * Interface API for upper network layers
+ *****************************************************************************/
+
+/**
+ * Open an interface.
+ * Called from generic network layer when ifconfig up is run.
+ *
+ * @param dev Pointer to interface struct.
+ *
+ * @return 0 on success, -ERRNO on failure. (Never fails.)
+ */
+static int
+ctc_open(struct net_device * dev)
+{
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_START, dev);
+ return 0;
+}
+
+/**
+ * Close an interface.
+ * Called from generic network layer when ifconfig down is run.
+ *
+ * @param dev Pointer to interface struct.
+ *
+ * @return 0 on success, -ERRNO on failure. (Never fails.)
+ */
+static int
+ctc_close(struct net_device * dev)
+{
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_STOP, dev);
+ return 0;
+}
+
+/**
+ * Start transmission of a packet.
+ * Called from generic network device layer.
+ *
+ * @param skb Pointer to buffer containing the packet.
+ * @param dev Pointer to interface struct.
+ *
+ * @return 0 if packet consumed, !0 if packet rejected.
+ * Note: If we return !0, then the packet is free'd by
+ * the generic network layer.
+ */
+static int
+ctc_tx(struct sk_buff *skb, struct net_device * dev)
+{
+ int rc = 0;
+ struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ /**
+ * Some sanity checks ...
+ */
+ if (skb == NULL) {
+ ctc_pr_warn("%s: NULL sk_buff passed\n", dev->name);
+ privptr->stats.tx_dropped++;
+ return 0;
+ }
+ if (skb_headroom(skb) < (LL_HEADER_LENGTH + 2)) {
+ ctc_pr_warn("%s: Got sk_buff with head room < %ld bytes\n",
+ dev->name, LL_HEADER_LENGTH + 2);
+ dev_kfree_skb(skb);
+ privptr->stats.tx_dropped++;
+ return 0;
+ }
+
+ /**
+ * If channels are not running, try to restart them
+ * and throw away packet.
+ */
+ if (fsm_getstate(privptr->fsm) != DEV_STATE_RUNNING) {
+ fsm_event(privptr->fsm, DEV_EVENT_START, dev);
+ if (privptr->protocol == CTC_PROTO_LINUX_TTY)
+ return -EBUSY;
+ dev_kfree_skb(skb);
+ privptr->stats.tx_dropped++;
+ privptr->stats.tx_errors++;
+ privptr->stats.tx_carrier_errors++;
+ return 0;
+ }
+
+ if (ctc_test_and_set_busy(dev))
+ return -EBUSY;
+
+ dev->trans_start = jiffies;
+ if (transmit_skb(privptr->channel[WRITE], skb) != 0)
+ rc = 1;
+ ctc_clear_busy(dev);
+ return rc;
+}
+
+/**
+ * Sets MTU of an interface.
+ *
+ * @param dev Pointer to interface struct.
+ * @param new_mtu The new MTU to use for this interface.
+ *
+ * @return 0 on success, -EINVAL if MTU is out of valid range.
+ * (valid range is 576 .. 65527). If VM is on the
+ * remote side, maximum MTU is 32760, however this is
+ * <em>not</em> checked here.
+ */
+static int
+ctc_change_mtu(struct net_device * dev, int new_mtu)
+{
+ struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ if ((new_mtu < 576) || (new_mtu > 65527) ||
+ (new_mtu > (privptr->channel[READ]->max_bufsize -
+ LL_HEADER_LENGTH - 2)))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ dev->hard_header_len = LL_HEADER_LENGTH + 2;
+ return 0;
+}
+
+/**
+ * Returns interface statistics of a device.
+ *
+ * @param dev Pointer to interface struct.
+ *
+ * @return Pointer to stats struct of this interface.
+ */
+static struct net_device_stats *
+ctc_stats(struct net_device * dev)
+{
+ return &((struct ctc_priv *) dev->priv)->stats;
+}
+
+/*
+ * sysfs attributes
+ */
+static ssize_t
+buffer_show(struct device *dev, char *buf)
+{
+ struct ctc_priv *priv;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ return sprintf(buf, "%d\n",
+ priv->buffer_size);
+}
+
+static ssize_t
+buffer_write(struct device *dev, const char *buf, size_t count)
+{
+ struct ctc_priv *priv;
+ struct net_device *ndev;
+ int bs1;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ ndev = priv->channel[READ]->netdev;
+ if (!ndev)
+ return -ENODEV;
+ sscanf(buf, "%u", &bs1);
+
+ if (bs1 > CTC_BUFSIZE_LIMIT)
+ return -EINVAL;
+ if ((ndev->flags & IFF_RUNNING) &&
+ (bs1 < (ndev->mtu + LL_HEADER_LENGTH + 2)))
+ return -EINVAL;
+ if (bs1 < (576 + LL_HEADER_LENGTH + 2))
+ return -EINVAL;
+
+ priv->buffer_size = bs1;
+ priv->channel[READ]->max_bufsize =
+ priv->channel[WRITE]->max_bufsize = bs1;
+ if (!(ndev->flags & IFF_RUNNING))
+ ndev->mtu = bs1 - LL_HEADER_LENGTH - 2;
+ priv->channel[READ]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
+ priv->channel[WRITE]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
+
+ return count;
+
+}
+
+static ssize_t
+loglevel_show(struct device *dev, char *buf)
+{
+ struct ctc_priv *priv;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ return sprintf(buf, "%d\n", loglevel);
+}
+
+static ssize_t
+loglevel_write(struct device *dev, const char *buf, size_t count)
+{
+ struct ctc_priv *priv;
+ int ll1;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ sscanf(buf, "%i", &ll1);
+
+ if ((ll1 > CTC_LOGLEVEL_MAX) || (ll1 < 0))
+ return -EINVAL;
+ loglevel = ll1;
+ return count;
+}
+
+static void
+ctc_print_statistics(struct ctc_priv *priv)
+{
+ char *sbuf;
+ char *p;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (!priv)
+ return;
+ sbuf = (char *)kmalloc(2048, GFP_KERNEL);
+ if (sbuf == NULL)
+ return;
+ p = sbuf;
+
+ p += sprintf(p, " Device FSM state: %s\n",
+ fsm_getstate_str(priv->fsm));
+ p += sprintf(p, " RX channel FSM state: %s\n",
+ fsm_getstate_str(priv->channel[READ]->fsm));
+ p += sprintf(p, " TX channel FSM state: %s\n",
+ fsm_getstate_str(priv->channel[WRITE]->fsm));
+ p += sprintf(p, " Max. TX buffer used: %ld\n",
+ priv->channel[WRITE]->prof.maxmulti);
+ p += sprintf(p, " Max. chained SKBs: %ld\n",
+ priv->channel[WRITE]->prof.maxcqueue);
+ p += sprintf(p, " TX single write ops: %ld\n",
+ priv->channel[WRITE]->prof.doios_single);
+ p += sprintf(p, " TX multi write ops: %ld\n",
+ priv->channel[WRITE]->prof.doios_multi);
+ p += sprintf(p, " Netto bytes written: %ld\n",
+ priv->channel[WRITE]->prof.txlen);
+ p += sprintf(p, " Max. TX IO-time: %ld\n",
+ priv->channel[WRITE]->prof.tx_time);
+
+ ctc_pr_debug("Statistics for %s:\n%s",
+ priv->channel[WRITE]->netdev->name, sbuf);
+ kfree(sbuf);
+ return;
+}
+
+static ssize_t
+stats_show(struct device *dev, char *buf)
+{
+ struct ctc_priv *priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ ctc_print_statistics(priv);
+ return sprintf(buf, "0\n");
+}
+
+static ssize_t
+stats_write(struct device *dev, const char *buf, size_t count)
+{
+ struct ctc_priv *priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ /* Reset statistics */
+ memset(&priv->channel[WRITE]->prof, 0,
+ sizeof(priv->channel[WRITE]->prof));
+ return count;
+}
+
+static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
+static DEVICE_ATTR(loglevel, 0644, loglevel_show, loglevel_write);
+static DEVICE_ATTR(stats, 0644, stats_show, stats_write);
+
+static int
+ctc_add_attributes(struct device *dev)
+{
+// device_create_file(dev, &dev_attr_buffer);
+ device_create_file(dev, &dev_attr_loglevel);
+ device_create_file(dev, &dev_attr_stats);
+ return 0;
+}
+
+static void
+ctc_remove_attributes(struct device *dev)
+{
+ device_remove_file(dev, &dev_attr_stats);
+ device_remove_file(dev, &dev_attr_loglevel);
+// device_remove_file(dev, &dev_attr_buffer);
+}
+
+
+static void
+ctc_netdev_unregister(struct net_device * dev)
+{
+ struct ctc_priv *privptr;
+
+ if (!dev)
+ return;
+ privptr = (struct ctc_priv *) dev->priv;
+ if (privptr->protocol != CTC_PROTO_LINUX_TTY)
+ unregister_netdev(dev);
+ else
+ ctc_tty_unregister_netdev(dev);
+}
+
+static int
+ctc_netdev_register(struct net_device * dev)
+{
+ struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
+ if (privptr->protocol != CTC_PROTO_LINUX_TTY)
+ return register_netdev(dev);
+ else
+ return ctc_tty_register_netdev(dev);
+}
+
+static void
+ctc_free_netdevice(struct net_device * dev, int free_dev)
+{
+ struct ctc_priv *privptr;
+ if (!dev)
+ return;
+ privptr = dev->priv;
+ if (privptr) {
+ if (privptr->fsm)
+ kfree_fsm(privptr->fsm);
+ kfree(privptr);
+ }
+#ifdef MODULE
+ if (free_dev)
+ free_netdev(dev);
+#endif
+}
+
+/**
+ * Initialize everything of the net device except the name and the
+ * channel structs.
+ */
+static struct net_device *
+ctc_init_netdevice(struct net_device * dev, int alloc_device,
+ struct ctc_priv *privptr)
+{
+ if (!privptr)
+ return NULL;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+ if (alloc_device) {
+ dev = kmalloc(sizeof (struct net_device), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+ memset(dev, 0, sizeof (struct net_device));
+ }
+
+ dev->priv = privptr;
+ privptr->fsm = init_fsm("ctcdev", dev_state_names,
+ dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS,
+ dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
+ if (privptr->fsm == NULL) {
+ if (alloc_device)
+ kfree(dev);
+ return NULL;
+ }
+ fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
+ fsm_settimer(privptr->fsm, &privptr->restart_timer);
+ if (dev->mtu == 0)
+ dev->mtu = CTC_BUFSIZE_DEFAULT - LL_HEADER_LENGTH - 2;
+ dev->hard_start_xmit = ctc_tx;
+ dev->open = ctc_open;
+ dev->stop = ctc_close;
+ dev->get_stats = ctc_stats;
+ dev->change_mtu = ctc_change_mtu;
+ dev->hard_header_len = LL_HEADER_LENGTH + 2;
+ dev->addr_len = 0;
+ dev->type = ARPHRD_SLIP;
+ dev->tx_queue_len = 100;
+ dev->flags = IFF_POINTOPOINT | IFF_NOARP;
+ SET_MODULE_OWNER(dev);
+ return dev;
+}
+
+static ssize_t
+ctc_proto_show(struct device *dev, char *buf)
+{
+ struct ctc_priv *priv;
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+
+ return sprintf(buf, "%d\n", priv->protocol);
+}
+
+static ssize_t
+ctc_proto_store(struct device *dev, const char *buf, size_t count)
+{
+ struct ctc_priv *priv;
+ int value;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ pr_debug("%s() called\n", __FUNCTION__);
+
+ priv = dev->driver_data;
+ if (!priv)
+ return -ENODEV;
+ sscanf(buf, "%u", &value);
+ if ((value < 0) || (value > CTC_PROTO_MAX))
+ return -EINVAL;
+ priv->protocol = value;
+
+ return count;
+}
+
+static DEVICE_ATTR(protocol, 0644, ctc_proto_show, ctc_proto_store);
+
+static ssize_t
+ctc_type_show(struct device *dev, char *buf)
+{
+ struct ccwgroup_device *cgdev;
+
+ cgdev = to_ccwgroupdev(dev);
+ if (!cgdev)
+ return -ENODEV;
+
+ return sprintf(buf, "%s\n", cu3088_type[cgdev->cdev[0]->id.driver_info]);
+}
+
+static DEVICE_ATTR(type, 0444, ctc_type_show, NULL);
+
+static struct attribute *ctc_attr[] = {
+ &dev_attr_protocol.attr,
+ &dev_attr_type.attr,
+ &dev_attr_buffer.attr,
+ NULL,
+};
+
+static struct attribute_group ctc_attr_group = {
+ .attrs = ctc_attr,
+};
+
+static int
+ctc_add_files(struct device *dev)
+{
+ pr_debug("%s() called\n", __FUNCTION__);
+
+ return sysfs_create_group(&dev->kobj, &ctc_attr_group);
+}
+
+static void
+ctc_remove_files(struct device *dev)
+{
+ pr_debug("%s() called\n", __FUNCTION__);
+
+ sysfs_remove_group(&dev->kobj, &ctc_attr_group);
+}
+
+/**
+ * Add ctc specific attributes.
+ * Add ctc private data.
+ *
+ * @param cgdev pointer to ccwgroup_device just added
+ *
+ * @returns 0 on success, !0 on failure.
+ */
+
+static int
+ctc_probe_device(struct ccwgroup_device *cgdev)
+{
+ struct ctc_priv *priv;
+ int rc;
+
+ pr_debug("%s() called\n", __FUNCTION__);
+ DBF_TEXT(trace, 3, __FUNCTION__);
+
+ if (!get_device(&cgdev->dev))
+ return -ENODEV;
+
+ priv = kmalloc(sizeof (struct ctc_priv), GFP_KERNEL);
+ if (!priv) {
+ ctc_pr_err("%s: Out of memory\n", __func__);
+ put_device(&cgdev->dev);
+ return -ENOMEM;
+ }
+
+ memset(priv, 0, sizeof (struct ctc_priv));
+ rc = ctc_add_files(&cgdev->dev);
+ if (rc) {
+ kfree(priv);
+ put_device(&cgdev->dev);
+ return rc;
+ }
+ priv->buffer_size = CTC_BUFSIZE_DEFAULT;
+ cgdev->cdev[0]->handler = ctc_irq_handler;
+ cgdev->cdev[1]->handler = ctc_irq_handler;
+ cgdev->dev.driver_data = priv;
+
+ return 0;
+}
+
+/**
+ *
+ * Setup an interface.
+ *
+ * @param cgdev Device to be setup.
+ *
+ * @returns 0 on success, !0 on failure.
+ */
+static int
+ctc_new_device(struct ccwgroup_device *cgdev)
+{
+ char read_id[CTC_ID_SIZE];
+ char write_id[CTC_ID_SIZE];
+ int direction;
+ enum channel_types type;
+ struct ctc_priv *privptr;
+ struct net_device *dev;
+ int ret;
+
+ pr_debug("%s() called\n", __FUNCTION__);
+ DBF_TEXT(setup, 3, __FUNCTION__);
+
+ privptr = cgdev->dev.driver_data;
+ if (!privptr)
+ return -ENODEV;
+
+ type = get_channel_type(&cgdev->cdev[0]->id);
+
+ snprintf(read_id, CTC_ID_SIZE, "ch-%s", cgdev->cdev[0]->dev.bus_id);
+ snprintf(write_id, CTC_ID_SIZE, "ch-%s", cgdev->cdev[1]->dev.bus_id);
+
+ if (add_channel(cgdev->cdev[0], type))
+ return -ENOMEM;
+ if (add_channel(cgdev->cdev[1], type))
+ return -ENOMEM;
+
+ ret = ccw_device_set_online(cgdev->cdev[0]);
+ if (ret != 0) {
+ printk(KERN_WARNING
+ "ccw_device_set_online (cdev[0]) failed with ret = %d\n", ret);
+ }
+
+ ret = ccw_device_set_online(cgdev->cdev[1]);
+ if (ret != 0) {
+ printk(KERN_WARNING
+ "ccw_device_set_online (cdev[1]) failed with ret = %d\n", ret);
+ }
+
+ dev = ctc_init_netdevice(NULL, 1, privptr);
+
+ if (!dev) {
+ ctc_pr_warn("ctc_init_netdevice failed\n");
+ goto out;
+ }
+
+ if (privptr->protocol == CTC_PROTO_LINUX_TTY)
+ strlcpy(dev->name, "ctctty%d", IFNAMSIZ);
+ else
+ strlcpy(dev->name, "ctc%d", IFNAMSIZ);
+
+ for (direction = READ; direction <= WRITE; direction++) {
+ privptr->channel[direction] =
+ channel_get(type, direction == READ ? read_id : write_id,
+ direction);
+ if (privptr->channel[direction] == NULL) {
+ if (direction == WRITE)
+ channel_free(privptr->channel[READ]);
+
+ ctc_free_netdevice(dev, 1);
+ goto out;
+ }
+ privptr->channel[direction]->netdev = dev;
+ privptr->channel[direction]->protocol = privptr->protocol;
+ privptr->channel[direction]->max_bufsize = privptr->buffer_size;
+ }
+ /* sysfs magic */
+ SET_NETDEV_DEV(dev, &cgdev->dev);
+
+ if (ctc_netdev_register(dev) != 0) {
+ ctc_free_netdevice(dev, 1);
+ goto out;
+ }
+
+ ctc_add_attributes(&cgdev->dev);
+
+ strlcpy(privptr->fsm->name, dev->name, sizeof (privptr->fsm->name));
+
+ print_banner();
+
+ ctc_pr_info("%s: read: %s, write: %s, proto: %d\n",
+ dev->name, privptr->channel[READ]->id,
+ privptr->channel[WRITE]->id, privptr->protocol);
+
+ return 0;
+out:
+ ccw_device_set_offline(cgdev->cdev[1]);
+ ccw_device_set_offline(cgdev->cdev[0]);
+
+ return -ENODEV;
+}
+
+/**
+ * Shutdown an interface.
+ *
+ * @param cgdev Device to be shut down.
+ *
+ * @returns 0 on success, !0 on failure.
+ */
+static int
+ctc_shutdown_device(struct ccwgroup_device *cgdev)
+{
+ struct ctc_priv *priv;
+ struct net_device *ndev;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ pr_debug("%s() called\n", __FUNCTION__);
+
+ priv = cgdev->dev.driver_data;
+ ndev = NULL;
+ if (!priv)
+ return -ENODEV;
+
+ if (priv->channel[READ]) {
+ ndev = priv->channel[READ]->netdev;
+
+ /* Close the device */
+ ctc_close(ndev);
+ ndev->flags &=~IFF_RUNNING;
+
+ ctc_remove_attributes(&cgdev->dev);
+
+ channel_free(priv->channel[READ]);
+ }
+ if (priv->channel[WRITE])
+ channel_free(priv->channel[WRITE]);
+
+ if (ndev) {
+ ctc_netdev_unregister(ndev);
+ ndev->priv = NULL;
+ ctc_free_netdevice(ndev, 1);
+ }
+
+ if (priv->fsm)
+ kfree_fsm(priv->fsm);
+
+ ccw_device_set_offline(cgdev->cdev[1]);
+ ccw_device_set_offline(cgdev->cdev[0]);
+
+ if (priv->channel[READ])
+ channel_remove(priv->channel[READ]);
+ if (priv->channel[WRITE])
+ channel_remove(priv->channel[WRITE]);
+
+ priv->channel[READ] = priv->channel[WRITE] = NULL;
+
+ return 0;
+
+}
+
+static void
+ctc_remove_device(struct ccwgroup_device *cgdev)
+{
+ struct ctc_priv *priv;
+
+ pr_debug("%s() called\n", __FUNCTION__);
+ DBF_TEXT(trace, 3, __FUNCTION__);
+
+ priv = cgdev->dev.driver_data;
+ if (!priv)
+ return;
+ if (cgdev->state == CCWGROUP_ONLINE)
+ ctc_shutdown_device(cgdev);
+ ctc_remove_files(&cgdev->dev);
+ cgdev->dev.driver_data = NULL;
+ kfree(priv);
+ put_device(&cgdev->dev);
+}
+
+static struct ccwgroup_driver ctc_group_driver = {
+ .owner = THIS_MODULE,
+ .name = "ctc",
+ .max_slaves = 2,
+ .driver_id = 0xC3E3C3,
+ .probe = ctc_probe_device,
+ .remove = ctc_remove_device,
+ .set_online = ctc_new_device,
+ .set_offline = ctc_shutdown_device,
+};
+
+/**
+ * Module related routines
+ *****************************************************************************/
+
+/**
+ * Prepare to be unloaded. Free IRQ's and release all resources.
+ * This is called just before this module is unloaded. It is
+ * <em>not</em> called, if the usage count is !0, so we don't need to check
+ * for that.
+ */
+static void __exit
+ctc_exit(void)
+{
+ unregister_cu3088_discipline(&ctc_group_driver);
+ ctc_tty_cleanup();
+ ctc_unregister_dbf_views();
+ ctc_pr_info("CTC driver unloaded\n");
+}
+
+/**
+ * Initialize module.
+ * This is called just after the module is loaded.
+ *
+ * @return 0 on success, !0 on error.
+ */
+static int __init
+ctc_init(void)
+{
+ int ret = 0;
+
+ print_banner();
+
+ ret = ctc_register_dbf_views();
+ if (ret){
+ ctc_pr_crit("ctc_init failed with ctc_register_dbf_views rc = %d\n", ret);
+ return ret;
+ }
+ ctc_tty_init();
+ ret = register_cu3088_discipline(&ctc_group_driver);
+ if (ret) {
+ ctc_tty_cleanup();
+ ctc_unregister_dbf_views();
+ }
+ return ret;
+}
+
+module_init(ctc_init);
+module_exit(ctc_exit);
+
+/* --- This is the END my friend --- */
diff --git a/drivers/s390/net/ctctty.c b/drivers/s390/net/ctctty.c
new file mode 100644
index 0000000..9257d60
--- /dev/null
+++ b/drivers/s390/net/ctctty.c
@@ -0,0 +1,1276 @@
+/*
+ * $Id: ctctty.c,v 1.26 2004/08/04 11:06:55 mschwide Exp $
+ *
+ * CTC / ESCON network driver, tty interface.
+ *
+ * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/tty.h>
+#include <linux/serial_reg.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+#include <linux/devfs_fs_kernel.h>
+#include "ctctty.h"
+#include "ctcdbug.h"
+
+#define CTC_TTY_MAJOR 43
+#define CTC_TTY_MAX_DEVICES 64
+
+#define CTC_ASYNC_MAGIC 0x49344C01 /* for paranoia-checking */
+#define CTC_ASYNC_INITIALIZED 0x80000000 /* port was initialized */
+#define CTC_ASYNC_NORMAL_ACTIVE 0x20000000 /* Normal device active */
+#define CTC_ASYNC_CLOSING 0x08000000 /* Serial port is closing */
+#define CTC_ASYNC_CTS_FLOW 0x04000000 /* Do CTS flow control */
+#define CTC_ASYNC_CHECK_CD 0x02000000 /* i.e., CLOCAL */
+#define CTC_ASYNC_HUP_NOTIFY 0x0001 /* Notify tty on hangups/closes */
+#define CTC_ASYNC_NETDEV_OPEN 0x0002 /* Underlying netdev is open */
+#define CTC_ASYNC_TX_LINESTAT 0x0004 /* Must send line status */
+#define CTC_ASYNC_SPLIT_TERMIOS 0x0008 /* Sep. termios for dialin/out */
+#define CTC_TTY_XMIT_SIZE 1024 /* Default bufsize for write */
+#define CTC_SERIAL_XMIT_MAX 4000 /* Maximum bufsize for write */
+
+/* Private data (similar to async_struct in <linux/serial.h>) */
+typedef struct {
+ int magic;
+ int flags; /* defined in tty.h */
+ int mcr; /* Modem control register */
+ int msr; /* Modem status register */
+ int lsr; /* Line status register */
+ int line;
+ int count; /* # of fd on device */
+ int blocked_open; /* # of blocked opens */
+ struct net_device *netdev;
+ struct sk_buff_head tx_queue; /* transmit queue */
+ struct sk_buff_head rx_queue; /* receive queue */
+ struct tty_struct *tty; /* Pointer to corresponding tty */
+ wait_queue_head_t open_wait;
+ wait_queue_head_t close_wait;
+ struct semaphore write_sem;
+ struct tasklet_struct tasklet;
+ struct timer_list stoptimer;
+} ctc_tty_info;
+
+/* Description of one CTC-tty */
+typedef struct {
+ struct tty_driver *ctc_tty_device; /* tty-device */
+ ctc_tty_info info[CTC_TTY_MAX_DEVICES]; /* Private data */
+} ctc_tty_driver;
+
+static ctc_tty_driver *driver;
+
+/* Leave this unchanged unless you know what you do! */
+#define MODEM_PARANOIA_CHECK
+#define MODEM_DO_RESTART
+
+#define CTC_TTY_NAME "ctctty"
+
+static __u32 ctc_tty_magic = CTC_ASYNC_MAGIC;
+static int ctc_tty_shuttingdown = 0;
+
+static spinlock_t ctc_tty_lock;
+
+/* ctc_tty_try_read() is called from within ctc_tty_rcv_skb()
+ * to stuff incoming data directly into a tty's flip-buffer. If the
+ * flip buffer is full, the packet gets queued up.
+ *
+ * Return:
+ * 1 = Success
+ * 0 = Failure, data has to be buffered and later processed by
+ * ctc_tty_readmodem().
+ */
+static int
+ctc_tty_try_read(ctc_tty_info * info, struct sk_buff *skb)
+{
+ int c;
+ int len;
+ struct tty_struct *tty;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if ((tty = info->tty)) {
+ if (info->mcr & UART_MCR_RTS) {
+ c = TTY_FLIPBUF_SIZE - tty->flip.count;
+ len = skb->len;
+ if (c >= len) {
+ memcpy(tty->flip.char_buf_ptr, skb->data, len);
+ memset(tty->flip.flag_buf_ptr, 0, len);
+ tty->flip.count += len;
+ tty->flip.char_buf_ptr += len;
+ tty->flip.flag_buf_ptr += len;
+ tty_flip_buffer_push(tty);
+ kfree_skb(skb);
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+/* ctc_tty_readmodem() is called periodically from within timer-interrupt.
+ * It tries getting received data from the receive queue an stuff it into
+ * the tty's flip-buffer.
+ */
+static int
+ctc_tty_readmodem(ctc_tty_info *info)
+{
+ int ret = 1;
+ struct tty_struct *tty;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if ((tty = info->tty)) {
+ if (info->mcr & UART_MCR_RTS) {
+ int c = TTY_FLIPBUF_SIZE - tty->flip.count;
+ struct sk_buff *skb;
+
+ if ((c > 0) && (skb = skb_dequeue(&info->rx_queue))) {
+ int len = skb->len;
+ if (len > c)
+ len = c;
+ memcpy(tty->flip.char_buf_ptr, skb->data, len);
+ skb_pull(skb, len);
+ memset(tty->flip.flag_buf_ptr, 0, len);
+ tty->flip.count += len;
+ tty->flip.char_buf_ptr += len;
+ tty->flip.flag_buf_ptr += len;
+ tty_flip_buffer_push(tty);
+ if (skb->len > 0)
+ skb_queue_head(&info->rx_queue, skb);
+ else {
+ kfree_skb(skb);
+ ret = skb_queue_len(&info->rx_queue);
+ }
+ }
+ }
+ }
+ return ret;
+}
+
+void
+ctc_tty_setcarrier(struct net_device *netdev, int on)
+{
+ int i;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if ((!driver) || ctc_tty_shuttingdown)
+ return;
+ for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
+ if (driver->info[i].netdev == netdev) {
+ ctc_tty_info *info = &driver->info[i];
+ if (on)
+ info->msr |= UART_MSR_DCD;
+ else
+ info->msr &= ~UART_MSR_DCD;
+ if ((info->flags & CTC_ASYNC_CHECK_CD) && (!on))
+ tty_hangup(info->tty);
+ }
+}
+
+void
+ctc_tty_netif_rx(struct sk_buff *skb)
+{
+ int i;
+ ctc_tty_info *info = NULL;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if (!skb)
+ return;
+ if ((!skb->dev) || (!driver) || ctc_tty_shuttingdown) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
+ if (driver->info[i].netdev == skb->dev) {
+ info = &driver->info[i];
+ break;
+ }
+ if (!info) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ if (skb->len < 6) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ if (memcmp(skb->data, &ctc_tty_magic, sizeof(__u32))) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ skb_pull(skb, sizeof(__u32));
+
+ i = *((int *)skb->data);
+ skb_pull(skb, sizeof(info->mcr));
+ if (i & UART_MCR_RTS) {
+ info->msr |= UART_MSR_CTS;
+ if (info->flags & CTC_ASYNC_CTS_FLOW)
+ info->tty->hw_stopped = 0;
+ } else {
+ info->msr &= ~UART_MSR_CTS;
+ if (info->flags & CTC_ASYNC_CTS_FLOW)
+ info->tty->hw_stopped = 1;
+ }
+ if (i & UART_MCR_DTR)
+ info->msr |= UART_MSR_DSR;
+ else
+ info->msr &= ~UART_MSR_DSR;
+ if (skb->len <= 0) {
+ kfree_skb(skb);
+ return;
+ }
+ /* Try to deliver directly via tty-flip-buf if queue is empty */
+ if (skb_queue_empty(&info->rx_queue))
+ if (ctc_tty_try_read(info, skb))
+ return;
+ /* Direct deliver failed or queue wasn't empty.
+ * Queue up for later dequeueing via timer-irq.
+ */
+ skb_queue_tail(&info->rx_queue, skb);
+ /* Schedule dequeuing */
+ tasklet_schedule(&info->tasklet);
+}
+
+static int
+ctc_tty_tint(ctc_tty_info * info)
+{
+ struct sk_buff *skb = skb_dequeue(&info->tx_queue);
+ int stopped = (info->tty->hw_stopped || info->tty->stopped);
+ int wake = 1;
+ int rc;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (!info->netdev) {
+ if (skb)
+ kfree_skb(skb);
+ return 0;
+ }
+ if (info->flags & CTC_ASYNC_TX_LINESTAT) {
+ int skb_res = info->netdev->hard_header_len +
+ sizeof(info->mcr) + sizeof(__u32);
+ /* If we must update line status,
+ * create an empty dummy skb and insert it.
+ */
+ if (skb)
+ skb_queue_head(&info->tx_queue, skb);
+
+ skb = dev_alloc_skb(skb_res);
+ if (!skb) {
+ printk(KERN_WARNING
+ "ctc_tty: Out of memory in %s%d tint\n",
+ CTC_TTY_NAME, info->line);
+ return 1;
+ }
+ skb_reserve(skb, skb_res);
+ stopped = 0;
+ wake = 0;
+ }
+ if (!skb)
+ return 0;
+ if (stopped) {
+ skb_queue_head(&info->tx_queue, skb);
+ return 1;
+ }
+#if 0
+ if (skb->len > 0)
+ printk(KERN_DEBUG "tint: %d %02x\n", skb->len, *(skb->data));
+ else
+ printk(KERN_DEBUG "tint: %d STAT\n", skb->len);
+#endif
+ memcpy(skb_push(skb, sizeof(info->mcr)), &info->mcr, sizeof(info->mcr));
+ memcpy(skb_push(skb, sizeof(__u32)), &ctc_tty_magic, sizeof(__u32));
+ rc = info->netdev->hard_start_xmit(skb, info->netdev);
+ if (rc) {
+ skb_pull(skb, sizeof(info->mcr) + sizeof(__u32));
+ if (skb->len > 0)
+ skb_queue_head(&info->tx_queue, skb);
+ else
+ kfree_skb(skb);
+ } else {
+ struct tty_struct *tty = info->tty;
+
+ info->flags &= ~CTC_ASYNC_TX_LINESTAT;
+ if (tty) {
+ tty_wakeup(tty);
+ }
+ }
+ return (skb_queue_empty(&info->tx_queue) ? 0 : 1);
+}
+
+/************************************************************
+ *
+ * Modem-functions
+ *
+ * mostly "stolen" from original Linux-serial.c and friends.
+ *
+ ************************************************************/
+
+static inline int
+ctc_tty_paranoia_check(ctc_tty_info * info, char *name, const char *routine)
+{
+#ifdef MODEM_PARANOIA_CHECK
+ if (!info) {
+ printk(KERN_WARNING "ctc_tty: null info_struct for %s in %s\n",
+ name, routine);
+ return 1;
+ }
+ if (info->magic != CTC_ASYNC_MAGIC) {
+ printk(KERN_WARNING "ctc_tty: bad magic for info struct %s in %s\n",
+ name, routine);
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+static void
+ctc_tty_inject(ctc_tty_info *info, char c)
+{
+ int skb_res;
+ struct sk_buff *skb;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_shuttingdown)
+ return;
+ skb_res = info->netdev->hard_header_len + sizeof(info->mcr) +
+ sizeof(__u32) + 1;
+ skb = dev_alloc_skb(skb_res);
+ if (!skb) {
+ printk(KERN_WARNING
+ "ctc_tty: Out of memory in %s%d tx_inject\n",
+ CTC_TTY_NAME, info->line);
+ return;
+ }
+ skb_reserve(skb, skb_res);
+ *(skb_put(skb, 1)) = c;
+ skb_queue_head(&info->tx_queue, skb);
+ tasklet_schedule(&info->tasklet);
+}
+
+static void
+ctc_tty_transmit_status(ctc_tty_info *info)
+{
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if (ctc_tty_shuttingdown)
+ return;
+ info->flags |= CTC_ASYNC_TX_LINESTAT;
+ tasklet_schedule(&info->tasklet);
+}
+
+static void
+ctc_tty_change_speed(ctc_tty_info * info)
+{
+ unsigned int cflag;
+ unsigned int quot;
+ int i;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ if (!info->tty || !info->tty->termios)
+ return;
+ cflag = info->tty->termios->c_cflag;
+
+ quot = i = cflag & CBAUD;
+ if (i & CBAUDEX) {
+ i &= ~CBAUDEX;
+ if (i < 1 || i > 2)
+ info->tty->termios->c_cflag &= ~CBAUDEX;
+ else
+ i += 15;
+ }
+ if (quot) {
+ info->mcr |= UART_MCR_DTR;
+ info->mcr |= UART_MCR_RTS;
+ ctc_tty_transmit_status(info);
+ } else {
+ info->mcr &= ~UART_MCR_DTR;
+ info->mcr &= ~UART_MCR_RTS;
+ ctc_tty_transmit_status(info);
+ return;
+ }
+
+ /* CTS flow control flag and modem status interrupts */
+ if (cflag & CRTSCTS) {
+ info->flags |= CTC_ASYNC_CTS_FLOW;
+ } else
+ info->flags &= ~CTC_ASYNC_CTS_FLOW;
+ if (cflag & CLOCAL)
+ info->flags &= ~CTC_ASYNC_CHECK_CD;
+ else {
+ info->flags |= CTC_ASYNC_CHECK_CD;
+ }
+}
+
+static int
+ctc_tty_startup(ctc_tty_info * info)
+{
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ if (info->flags & CTC_ASYNC_INITIALIZED)
+ return 0;
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "starting up %s%d ...\n", CTC_TTY_NAME, info->line);
+#endif
+ /*
+ * Now, initialize the UART
+ */
+ info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ /*
+ * and set the speed of the serial port
+ */
+ ctc_tty_change_speed(info);
+
+ info->flags |= CTC_ASYNC_INITIALIZED;
+ if (!(info->flags & CTC_ASYNC_NETDEV_OPEN))
+ info->netdev->open(info->netdev);
+ info->flags |= CTC_ASYNC_NETDEV_OPEN;
+ return 0;
+}
+
+static void
+ctc_tty_stopdev(unsigned long data)
+{
+ ctc_tty_info *info = (ctc_tty_info *)data;
+
+ if ((!info) || (!info->netdev) ||
+ (info->flags & CTC_ASYNC_INITIALIZED))
+ return;
+ info->netdev->stop(info->netdev);
+ info->flags &= ~CTC_ASYNC_NETDEV_OPEN;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void
+ctc_tty_shutdown(ctc_tty_info * info)
+{
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ if (!(info->flags & CTC_ASYNC_INITIALIZED))
+ return;
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "Shutting down %s%d ....\n", CTC_TTY_NAME, info->line);
+#endif
+ info->msr &= ~UART_MSR_RI;
+ if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
+ info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+ mod_timer(&info->stoptimer, jiffies + (10 * HZ));
+ skb_queue_purge(&info->tx_queue);
+ skb_queue_purge(&info->rx_queue);
+ info->flags &= ~CTC_ASYNC_INITIALIZED;
+}
+
+/* ctc_tty_write() is the main send-routine. It is called from the upper
+ * levels within the kernel to perform sending data. Depending on the
+ * online-flag it either directs output to the at-command-interpreter or
+ * to the lower level. Additional tasks done here:
+ * - If online, check for escape-sequence (+++)
+ * - If sending audio-data, call ctc_tty_DLEdown() to parse DLE-codes.
+ * - If receiving audio-data, call ctc_tty_end_vrx() to abort if needed.
+ * - If dialing, abort dial.
+ */
+static int
+ctc_tty_write(struct tty_struct *tty, const u_char * buf, int count)
+{
+ int c;
+ int total = 0;
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ if (ctc_tty_shuttingdown)
+ goto ex;
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_write"))
+ goto ex;
+ if (!tty)
+ goto ex;
+ if (!info->netdev) {
+ total = -ENODEV;
+ goto ex;
+ }
+ while (1) {
+ struct sk_buff *skb;
+ int skb_res;
+
+ c = (count < CTC_TTY_XMIT_SIZE) ? count : CTC_TTY_XMIT_SIZE;
+ if (c <= 0)
+ break;
+
+ skb_res = info->netdev->hard_header_len + sizeof(info->mcr) +
+ + sizeof(__u32);
+ skb = dev_alloc_skb(skb_res + c);
+ if (!skb) {
+ printk(KERN_WARNING
+ "ctc_tty: Out of memory in %s%d write\n",
+ CTC_TTY_NAME, info->line);
+ break;
+ }
+ skb_reserve(skb, skb_res);
+ memcpy(skb_put(skb, c), buf, c);
+ skb_queue_tail(&info->tx_queue, skb);
+ buf += c;
+ total += c;
+ count -= c;
+ }
+ if (skb_queue_len(&info->tx_queue)) {
+ info->lsr &= ~UART_LSR_TEMT;
+ tasklet_schedule(&info->tasklet);
+ }
+ex:
+ DBF_TEXT(trace, 6, __FUNCTION__);
+ return total;
+}
+
+static int
+ctc_tty_write_room(struct tty_struct *tty)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_write_room"))
+ return 0;
+ return CTC_TTY_XMIT_SIZE;
+}
+
+static int
+ctc_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_chars_in_buffer"))
+ return 0;
+ return 0;
+}
+
+static void
+ctc_tty_flush_buffer(struct tty_struct *tty)
+{
+ ctc_tty_info *info;
+ unsigned long flags;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (!tty)
+ goto ex;
+ spin_lock_irqsave(&ctc_tty_lock, flags);
+ info = (ctc_tty_info *) tty->driver_data;
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_flush_buffer")) {
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+ goto ex;
+ }
+ skb_queue_purge(&info->tx_queue);
+ info->lsr |= UART_LSR_TEMT;
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+ wake_up_interruptible(&tty->write_wait);
+ tty_wakeup(tty);
+ex:
+ DBF_TEXT_(trace, 2, "ex: %s ", __FUNCTION__);
+ return;
+}
+
+static void
+ctc_tty_flush_chars(struct tty_struct *tty)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_shuttingdown)
+ return;
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_flush_chars"))
+ return;
+ if (tty->stopped || tty->hw_stopped || (!skb_queue_len(&info->tx_queue)))
+ return;
+ tasklet_schedule(&info->tasklet);
+}
+
+/*
+ * ------------------------------------------------------------
+ * ctc_tty_throttle()
+ *
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void
+ctc_tty_throttle(struct tty_struct *tty)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_throttle"))
+ return;
+ info->mcr &= ~UART_MCR_RTS;
+ if (I_IXOFF(tty))
+ ctc_tty_inject(info, STOP_CHAR(tty));
+ ctc_tty_transmit_status(info);
+}
+
+static void
+ctc_tty_unthrottle(struct tty_struct *tty)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_unthrottle"))
+ return;
+ info->mcr |= UART_MCR_RTS;
+ if (I_IXOFF(tty))
+ ctc_tty_inject(info, START_CHAR(tty));
+ ctc_tty_transmit_status(info);
+}
+
+/*
+ * ------------------------------------------------------------
+ * ctc_tty_ioctl() and friends
+ * ------------------------------------------------------------
+ */
+
+/*
+ * ctc_tty_get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * is emptied. On bus types like RS485, the transmitter must
+ * release the bus after transmitting. This must be done when
+ * the transmit shift register is empty, not be done when the
+ * transmit holding register is empty. This functionality
+ * allows RS485 driver to be written in user space.
+ */
+static int
+ctc_tty_get_lsr_info(ctc_tty_info * info, uint __user *value)
+{
+ u_char status;
+ uint result;
+ ulong flags;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ spin_lock_irqsave(&ctc_tty_lock, flags);
+ status = info->lsr;
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+ result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
+ put_user(result, value);
+ return 0;
+}
+
+
+static int ctc_tty_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+ u_char control,
+ status;
+ uint result;
+ ulong flags;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_ioctl"))
+ return -ENODEV;
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ control = info->mcr;
+ spin_lock_irqsave(&ctc_tty_lock, flags);
+ status = info->msr;
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+ result = ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
+ | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
+ | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
+ | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
+ | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
+ | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
+ return result;
+}
+
+static int
+ctc_tty_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_ioctl"))
+ return -ENODEV;
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ if (set & TIOCM_RTS)
+ info->mcr |= UART_MCR_RTS;
+ if (set & TIOCM_DTR)
+ info->mcr |= UART_MCR_DTR;
+
+ if (clear & TIOCM_RTS)
+ info->mcr &= ~UART_MCR_RTS;
+ if (clear & TIOCM_DTR)
+ info->mcr &= ~UART_MCR_DTR;
+
+ if ((set | clear) & (TIOCM_RTS|TIOCM_DTR))
+ ctc_tty_transmit_status(info);
+ return 0;
+}
+
+static int
+ctc_tty_ioctl(struct tty_struct *tty, struct file *file,
+ uint cmd, ulong arg)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+ int error;
+ int retval;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_ioctl"))
+ return -ENODEV;
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ switch (cmd) {
+ case TCSBRK: /* SVID version: non-zero arg --> no break */
+#ifdef CTC_DEBUG_MODEM_IOCTL
+ printk(KERN_DEBUG "%s%d ioctl TCSBRK\n", CTC_TTY_NAME, info->line);
+#endif
+ retval = tty_check_change(tty);
+ if (retval)
+ return retval;
+ tty_wait_until_sent(tty, 0);
+ return 0;
+ case TCSBRKP: /* support for POSIX tcsendbreak() */
+#ifdef CTC_DEBUG_MODEM_IOCTL
+ printk(KERN_DEBUG "%s%d ioctl TCSBRKP\n", CTC_TTY_NAME, info->line);
+#endif
+ retval = tty_check_change(tty);
+ if (retval)
+ return retval;
+ tty_wait_until_sent(tty, 0);
+ return 0;
+ case TIOCGSOFTCAR:
+#ifdef CTC_DEBUG_MODEM_IOCTL
+ printk(KERN_DEBUG "%s%d ioctl TIOCGSOFTCAR\n", CTC_TTY_NAME,
+ info->line);
+#endif
+ error = put_user(C_CLOCAL(tty) ? 1 : 0, (ulong __user *) arg);
+ return error;
+ case TIOCSSOFTCAR:
+#ifdef CTC_DEBUG_MODEM_IOCTL
+ printk(KERN_DEBUG "%s%d ioctl TIOCSSOFTCAR\n", CTC_TTY_NAME,
+ info->line);
+#endif
+ error = get_user(arg, (ulong __user *) arg);
+ if (error)
+ return error;
+ tty->termios->c_cflag =
+ ((tty->termios->c_cflag & ~CLOCAL) |
+ (arg ? CLOCAL : 0));
+ return 0;
+ case TIOCSERGETLSR: /* Get line status register */
+#ifdef CTC_DEBUG_MODEM_IOCTL
+ printk(KERN_DEBUG "%s%d ioctl TIOCSERGETLSR\n", CTC_TTY_NAME,
+ info->line);
+#endif
+ if (access_ok(VERIFY_WRITE, (void __user *) arg, sizeof(uint)))
+ return ctc_tty_get_lsr_info(info, (uint __user *) arg);
+ else
+ return -EFAULT;
+ default:
+#ifdef CTC_DEBUG_MODEM_IOCTL
+ printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on %s%d\n", cmd,
+ CTC_TTY_NAME, info->line);
+#endif
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static void
+ctc_tty_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+ unsigned int cflag = tty->termios->c_cflag;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ ctc_tty_change_speed(info);
+
+ /* Handle transition to B0 */
+ if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) {
+ info->mcr &= ~(UART_MCR_DTR|UART_MCR_RTS);
+ ctc_tty_transmit_status(info);
+ }
+
+ /* Handle transition from B0 to other */
+ if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
+ info->mcr |= UART_MCR_DTR;
+ if (!(tty->termios->c_cflag & CRTSCTS) ||
+ !test_bit(TTY_THROTTLED, &tty->flags)) {
+ info->mcr |= UART_MCR_RTS;
+ }
+ ctc_tty_transmit_status(info);
+ }
+
+ /* Handle turning off CRTSCTS */
+ if ((old_termios->c_cflag & CRTSCTS) &&
+ !(tty->termios->c_cflag & CRTSCTS))
+ tty->hw_stopped = 0;
+}
+
+/*
+ * ------------------------------------------------------------
+ * ctc_tty_open() and friends
+ * ------------------------------------------------------------
+ */
+static int
+ctc_tty_block_til_ready(struct tty_struct *tty, struct file *filp, ctc_tty_info *info)
+{
+ DECLARE_WAITQUEUE(wait, NULL);
+ int do_clocal = 0;
+ unsigned long flags;
+ int retval;
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+ /*
+ * If the device is in the middle of being closed, then block
+ * until it's done, and then try again.
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & CTC_ASYNC_CLOSING)) {
+ if (info->flags & CTC_ASYNC_CLOSING)
+ wait_event(info->close_wait,
+ !(info->flags & CTC_ASYNC_CLOSING));
+#ifdef MODEM_DO_RESTART
+ if (info->flags & CTC_ASYNC_HUP_NOTIFY)
+ return -EAGAIN;
+ else
+ return -ERESTARTSYS;
+#else
+ return -EAGAIN;
+#endif
+ }
+ /*
+ * If non-blocking mode is set, then make the check up front
+ * and then exit.
+ */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
+ info->flags |= CTC_ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+ if (tty->termios->c_cflag & CLOCAL)
+ do_clocal = 1;
+ /*
+ * Block waiting for the carrier detect and the line to become
+ * free (i.e., not in use by the callout). While we are in
+ * this loop, info->count is dropped by one, so that
+ * ctc_tty_close() knows when to free things. We restore it upon
+ * exit, either normal or abnormal.
+ */
+ retval = 0;
+ add_wait_queue(&info->open_wait, &wait);
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_block_til_ready before block: %s%d, count = %d\n",
+ CTC_TTY_NAME, info->line, info->count);
+#endif
+ spin_lock_irqsave(&ctc_tty_lock, flags);
+ if (!(tty_hung_up_p(filp)))
+ info->count--;
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+ info->blocked_open++;
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (tty_hung_up_p(filp) ||
+ !(info->flags & CTC_ASYNC_INITIALIZED)) {
+#ifdef MODEM_DO_RESTART
+ if (info->flags & CTC_ASYNC_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+#else
+ retval = -EAGAIN;
+#endif
+ break;
+ }
+ if (!(info->flags & CTC_ASYNC_CLOSING) &&
+ (do_clocal || (info->msr & UART_MSR_DCD))) {
+ break;
+ }
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_block_til_ready blocking: %s%d, count = %d\n",
+ CTC_TTY_NAME, info->line, info->count);
+#endif
+ schedule();
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&info->open_wait, &wait);
+ if (!tty_hung_up_p(filp))
+ info->count++;
+ info->blocked_open--;
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_block_til_ready after blocking: %s%d, count = %d\n",
+ CTC_TTY_NAME, info->line, info->count);
+#endif
+ if (retval)
+ return retval;
+ info->flags |= CTC_ASYNC_NORMAL_ACTIVE;
+ return 0;
+}
+
+/*
+ * This routine is called whenever a serial port is opened. It
+ * enables interrupts for a serial port, linking in its async structure into
+ * the IRQ chain. It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+static int
+ctc_tty_open(struct tty_struct *tty, struct file *filp)
+{
+ ctc_tty_info *info;
+ unsigned long saveflags;
+ int retval,
+ line;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ line = tty->index;
+ if (line < 0 || line > CTC_TTY_MAX_DEVICES)
+ return -ENODEV;
+ info = &driver->info[line];
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_open"))
+ return -ENODEV;
+ if (!info->netdev)
+ return -ENODEV;
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_open %s, count = %d\n", tty->name,
+ info->count);
+#endif
+ spin_lock_irqsave(&ctc_tty_lock, saveflags);
+ info->count++;
+ tty->driver_data = info;
+ info->tty = tty;
+ spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
+ /*
+ * Start up serial port
+ */
+ retval = ctc_tty_startup(info);
+ if (retval) {
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_open return after startup\n");
+#endif
+ return retval;
+ }
+ retval = ctc_tty_block_til_ready(tty, filp, info);
+ if (retval) {
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_open return after ctc_tty_block_til_ready \n");
+#endif
+ return retval;
+ }
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_open %s successful...\n", tty->name);
+#endif
+ return 0;
+}
+
+static void
+ctc_tty_close(struct tty_struct *tty, struct file *filp)
+{
+ ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
+ ulong flags;
+ ulong timeout;
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ if (!info || ctc_tty_paranoia_check(info, tty->name, "ctc_tty_close"))
+ return;
+ spin_lock_irqsave(&ctc_tty_lock, flags);
+ if (tty_hung_up_p(filp)) {
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_close return after tty_hung_up_p\n");
+#endif
+ return;
+ }
+ if ((tty->count == 1) && (info->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. Info->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk(KERN_ERR "ctc_tty_close: bad port count; tty->count is 1, "
+ "info->count is %d\n", info->count);
+ info->count = 1;
+ }
+ if (--info->count < 0) {
+ printk(KERN_ERR "ctc_tty_close: bad port count for %s%d: %d\n",
+ CTC_TTY_NAME, info->line, info->count);
+ info->count = 0;
+ }
+ if (info->count) {
+ local_irq_restore(flags);
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_close after info->count != 0\n");
+#endif
+ return;
+ }
+ info->flags |= CTC_ASYNC_CLOSING;
+ tty->closing = 1;
+ /*
+ * At this point we stop accepting input. To do this, we
+ * disable the receive line status interrupts, and tell the
+ * interrupt driver to stop checking the data ready bit in the
+ * line status register.
+ */
+ if (info->flags & CTC_ASYNC_INITIALIZED) {
+ tty_wait_until_sent(tty, 30*HZ); /* 30 seconds timeout */
+ /*
+ * Before we drop DTR, make sure the UART transmitter
+ * has completely drained; this is especially
+ * important if there is a transmit FIFO!
+ */
+ timeout = jiffies + HZ;
+ while (!(info->lsr & UART_LSR_TEMT)) {
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+ msleep(500);
+ spin_lock_irqsave(&ctc_tty_lock, flags);
+ if (time_after(jiffies,timeout))
+ break;
+ }
+ }
+ ctc_tty_shutdown(info);
+ if (tty->driver->flush_buffer) {
+ skb_queue_purge(&info->tx_queue);
+ info->lsr |= UART_LSR_TEMT;
+ }
+ tty_ldisc_flush(tty);
+ info->tty = 0;
+ tty->closing = 0;
+ if (info->blocked_open) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ/2);
+ wake_up_interruptible(&info->open_wait);
+ }
+ info->flags &= ~(CTC_ASYNC_NORMAL_ACTIVE | CTC_ASYNC_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+ spin_unlock_irqrestore(&ctc_tty_lock, flags);
+#ifdef CTC_DEBUG_MODEM_OPEN
+ printk(KERN_DEBUG "ctc_tty_close normal exit\n");
+#endif
+}
+
+/*
+ * ctc_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+static void
+ctc_tty_hangup(struct tty_struct *tty)
+{
+ ctc_tty_info *info = (ctc_tty_info *)tty->driver_data;
+ unsigned long saveflags;
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_hangup"))
+ return;
+ ctc_tty_shutdown(info);
+ info->count = 0;
+ info->flags &= ~CTC_ASYNC_NORMAL_ACTIVE;
+ spin_lock_irqsave(&ctc_tty_lock, saveflags);
+ info->tty = 0;
+ spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
+ wake_up_interruptible(&info->open_wait);
+}
+
+
+/*
+ * For all online tty's, try sending data to
+ * the lower levels.
+ */
+static void
+ctc_tty_task(unsigned long arg)
+{
+ ctc_tty_info *info = (void *)arg;
+ unsigned long saveflags;
+ int again;
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ spin_lock_irqsave(&ctc_tty_lock, saveflags);
+ if ((!ctc_tty_shuttingdown) && info) {
+ again = ctc_tty_tint(info);
+ if (!again)
+ info->lsr |= UART_LSR_TEMT;
+ again |= ctc_tty_readmodem(info);
+ if (again) {
+ tasklet_schedule(&info->tasklet);
+ }
+ }
+ spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
+}
+
+static struct tty_operations ctc_ops = {
+ .open = ctc_tty_open,
+ .close = ctc_tty_close,
+ .write = ctc_tty_write,
+ .flush_chars = ctc_tty_flush_chars,
+ .write_room = ctc_tty_write_room,
+ .chars_in_buffer = ctc_tty_chars_in_buffer,
+ .flush_buffer = ctc_tty_flush_buffer,
+ .ioctl = ctc_tty_ioctl,
+ .throttle = ctc_tty_throttle,
+ .unthrottle = ctc_tty_unthrottle,
+ .set_termios = ctc_tty_set_termios,
+ .hangup = ctc_tty_hangup,
+ .tiocmget = ctc_tty_tiocmget,
+ .tiocmset = ctc_tty_tiocmset,
+};
+
+int
+ctc_tty_init(void)
+{
+ int i;
+ ctc_tty_info *info;
+ struct tty_driver *device;
+
+ DBF_TEXT(trace, 2, __FUNCTION__);
+ driver = kmalloc(sizeof(ctc_tty_driver), GFP_KERNEL);
+ if (driver == NULL) {
+ printk(KERN_WARNING "Out of memory in ctc_tty_modem_init\n");
+ return -ENOMEM;
+ }
+ memset(driver, 0, sizeof(ctc_tty_driver));
+ device = alloc_tty_driver(CTC_TTY_MAX_DEVICES);
+ if (!device) {
+ kfree(driver);
+ printk(KERN_WARNING "Out of memory in ctc_tty_modem_init\n");
+ return -ENOMEM;
+ }
+
+ device->devfs_name = "ctc/" CTC_TTY_NAME;
+ device->name = CTC_TTY_NAME;
+ device->major = CTC_TTY_MAJOR;
+ device->minor_start = 0;
+ device->type = TTY_DRIVER_TYPE_SERIAL;
+ device->subtype = SERIAL_TYPE_NORMAL;
+ device->init_termios = tty_std_termios;
+ device->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ device->flags = TTY_DRIVER_REAL_RAW;
+ device->driver_name = "ctc_tty",
+ tty_set_operations(device, &ctc_ops);
+ if (tty_register_driver(device)) {
+ printk(KERN_WARNING "ctc_tty: Couldn't register serial-device\n");
+ put_tty_driver(device);
+ kfree(driver);
+ return -1;
+ }
+ driver->ctc_tty_device = device;
+ for (i = 0; i < CTC_TTY_MAX_DEVICES; i++) {
+ info = &driver->info[i];
+ init_MUTEX(&info->write_sem);
+ tasklet_init(&info->tasklet, ctc_tty_task,
+ (unsigned long) info);
+ info->magic = CTC_ASYNC_MAGIC;
+ info->line = i;
+ info->tty = 0;
+ info->count = 0;
+ info->blocked_open = 0;
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->close_wait);
+ skb_queue_head_init(&info->tx_queue);
+ skb_queue_head_init(&info->rx_queue);
+ init_timer(&info->stoptimer);
+ info->stoptimer.function = ctc_tty_stopdev;
+ info->stoptimer.data = (unsigned long)info;
+ info->mcr = UART_MCR_RTS;
+ }
+ return 0;
+}
+
+int
+ctc_tty_register_netdev(struct net_device *dev) {
+ int ttynum;
+ char *err;
+ char *p;
+
+ DBF_TEXT(trace, 2, __FUNCTION__);
+ if ((!dev) || (!dev->name)) {
+ printk(KERN_WARNING
+ "ctc_tty_register_netdev called "
+ "with NULL dev or NULL dev-name\n");
+ return -1;
+ }
+
+ /*
+ * If the name is a format string the caller wants us to
+ * do a name allocation : format string must end with %d
+ */
+ if (strchr(dev->name, '%'))
+ {
+ int err = dev_alloc_name(dev, dev->name); // dev->name is changed by this
+ if (err < 0) {
+ printk(KERN_DEBUG "dev_alloc returned error %d\n", err);
+ return err;
+ }
+
+ }
+
+ for (p = dev->name; p && ((*p < '0') || (*p > '9')); p++);
+ ttynum = simple_strtoul(p, &err, 0);
+ if ((ttynum < 0) || (ttynum >= CTC_TTY_MAX_DEVICES) ||
+ (err && *err)) {
+ printk(KERN_WARNING
+ "ctc_tty_register_netdev called "
+ "with number in name '%s'\n", dev->name);
+ return -1;
+ }
+ if (driver->info[ttynum].netdev) {
+ printk(KERN_WARNING
+ "ctc_tty_register_netdev called "
+ "for already registered device '%s'\n",
+ dev->name);
+ return -1;
+ }
+ driver->info[ttynum].netdev = dev;
+ return 0;
+}
+
+void
+ctc_tty_unregister_netdev(struct net_device *dev) {
+ int i;
+ unsigned long saveflags;
+ ctc_tty_info *info = NULL;
+
+ DBF_TEXT(trace, 2, __FUNCTION__);
+ spin_lock_irqsave(&ctc_tty_lock, saveflags);
+ for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
+ if (driver->info[i].netdev == dev) {
+ info = &driver->info[i];
+ break;
+ }
+ if (info) {
+ info->netdev = NULL;
+ skb_queue_purge(&info->tx_queue);
+ skb_queue_purge(&info->rx_queue);
+ }
+ spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
+}
+
+void
+ctc_tty_cleanup(void) {
+ unsigned long saveflags;
+
+ DBF_TEXT(trace, 2, __FUNCTION__);
+ spin_lock_irqsave(&ctc_tty_lock, saveflags);
+ ctc_tty_shuttingdown = 1;
+ spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
+ tty_unregister_driver(driver->ctc_tty_device);
+ put_tty_driver(driver->ctc_tty_device);
+ kfree(driver);
+ driver = NULL;
+}
diff --git a/drivers/s390/net/ctctty.h b/drivers/s390/net/ctctty.h
new file mode 100644
index 0000000..84b2f8f
--- /dev/null
+++ b/drivers/s390/net/ctctty.h
@@ -0,0 +1,37 @@
+/*
+ * $Id: ctctty.h,v 1.4 2003/09/18 08:01:10 mschwide Exp $
+ *
+ * CTC / ESCON network driver, tty interface.
+ *
+ * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _CTCTTY_H_
+#define _CTCTTY_H_
+
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+
+extern int ctc_tty_register_netdev(struct net_device *);
+extern void ctc_tty_unregister_netdev(struct net_device *);
+extern void ctc_tty_netif_rx(struct sk_buff *);
+extern int ctc_tty_init(void);
+extern void ctc_tty_cleanup(void);
+extern void ctc_tty_setcarrier(struct net_device *, int);
+
+#endif
diff --git a/drivers/s390/net/cu3088.c b/drivers/s390/net/cu3088.c
new file mode 100644
index 0000000..1b0a9f1
--- /dev/null
+++ b/drivers/s390/net/cu3088.c
@@ -0,0 +1,166 @@
+/*
+ * $Id: cu3088.c,v 1.34 2004/06/15 13:16:27 pavlic Exp $
+ *
+ * CTC / LCS ccw_device driver
+ *
+ * Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Arnd Bergmann <arndb@de.ibm.com>
+ * Cornelia Huck <cohuck@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/err.h>
+
+#include <asm/ccwdev.h>
+#include <asm/ccwgroup.h>
+
+#include "cu3088.h"
+
+const char *cu3088_type[] = {
+ "not a channel",
+ "CTC/A",
+ "ESCON channel",
+ "FICON channel",
+ "P390 LCS card",
+ "OSA LCS card",
+ "unknown channel type",
+ "unsupported channel type",
+};
+
+/* static definitions */
+
+static struct ccw_device_id cu3088_ids[] = {
+ { CCW_DEVICE(0x3088, 0x08), .driver_info = channel_type_parallel },
+ { CCW_DEVICE(0x3088, 0x1f), .driver_info = channel_type_escon },
+ { CCW_DEVICE(0x3088, 0x1e), .driver_info = channel_type_ficon },
+ { CCW_DEVICE(0x3088, 0x01), .driver_info = channel_type_p390 },
+ { CCW_DEVICE(0x3088, 0x60), .driver_info = channel_type_osa2 },
+ { /* end of list */ }
+};
+
+static struct ccw_driver cu3088_driver;
+
+struct device *cu3088_root_dev;
+
+static ssize_t
+group_write(struct device_driver *drv, const char *buf, size_t count)
+{
+ const char *start, *end;
+ char bus_ids[2][BUS_ID_SIZE], *argv[2];
+ int i;
+ int ret;
+ struct ccwgroup_driver *cdrv;
+
+ cdrv = to_ccwgroupdrv(drv);
+ if (!cdrv)
+ return -EINVAL;
+ start = buf;
+ for (i=0; i<2; i++) {
+ static const char delim[] = {',', '\n'};
+ int len;
+
+ if (!(end = strchr(start, delim[i])))
+ return count;
+ len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start + 1);
+ strlcpy (bus_ids[i], start, len);
+ argv[i] = bus_ids[i];
+ start = end + 1;
+ }
+
+ ret = ccwgroup_create(cu3088_root_dev, cdrv->driver_id,
+ &cu3088_driver, 2, argv);
+
+ return (ret == 0) ? count : ret;
+}
+
+static DRIVER_ATTR(group, 0200, NULL, group_write);
+
+/* Register-unregister for ctc&lcs */
+int
+register_cu3088_discipline(struct ccwgroup_driver *dcp)
+{
+ int rc;
+
+ if (!dcp)
+ return -EINVAL;
+
+ /* Register discipline.*/
+ rc = ccwgroup_driver_register(dcp);
+ if (rc)
+ return rc;
+
+ rc = driver_create_file(&dcp->driver, &driver_attr_group);
+ if (rc)
+ ccwgroup_driver_unregister(dcp);
+
+ return rc;
+
+}
+
+void
+unregister_cu3088_discipline(struct ccwgroup_driver *dcp)
+{
+ if (!dcp)
+ return;
+
+ driver_remove_file(&dcp->driver, &driver_attr_group);
+ ccwgroup_driver_unregister(dcp);
+}
+
+static struct ccw_driver cu3088_driver = {
+ .owner = THIS_MODULE,
+ .ids = cu3088_ids,
+ .name = "cu3088",
+ .probe = ccwgroup_probe_ccwdev,
+ .remove = ccwgroup_remove_ccwdev,
+};
+
+/* module setup */
+static int __init
+cu3088_init (void)
+{
+ int rc;
+
+ cu3088_root_dev = s390_root_dev_register("cu3088");
+ if (IS_ERR(cu3088_root_dev))
+ return PTR_ERR(cu3088_root_dev);
+ rc = ccw_driver_register(&cu3088_driver);
+ if (rc)
+ s390_root_dev_unregister(cu3088_root_dev);
+
+ return rc;
+}
+
+static void __exit
+cu3088_exit (void)
+{
+ ccw_driver_unregister(&cu3088_driver);
+ s390_root_dev_unregister(cu3088_root_dev);
+}
+
+MODULE_DEVICE_TABLE(ccw,cu3088_ids);
+MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
+MODULE_LICENSE("GPL");
+
+module_init(cu3088_init);
+module_exit(cu3088_exit);
+
+EXPORT_SYMBOL_GPL(cu3088_type);
+EXPORT_SYMBOL_GPL(register_cu3088_discipline);
+EXPORT_SYMBOL_GPL(unregister_cu3088_discipline);
diff --git a/drivers/s390/net/cu3088.h b/drivers/s390/net/cu3088.h
new file mode 100644
index 0000000..0ec49a8
--- /dev/null
+++ b/drivers/s390/net/cu3088.h
@@ -0,0 +1,41 @@
+#ifndef _CU3088_H
+#define _CU3088_H
+
+/**
+ * Enum for classifying detected devices.
+ */
+enum channel_types {
+ /* Device is not a channel */
+ channel_type_none,
+
+ /* Device is a CTC/A */
+ channel_type_parallel,
+
+ /* Device is a ESCON channel */
+ channel_type_escon,
+
+ /* Device is a FICON channel */
+ channel_type_ficon,
+
+ /* Device is a P390 LCS card */
+ channel_type_p390,
+
+ /* Device is a OSA2 card */
+ channel_type_osa2,
+
+ /* Device is a channel, but we don't know
+ * anything about it */
+ channel_type_unknown,
+
+ /* Device is an unsupported model */
+ channel_type_unsupported,
+
+ /* number of type entries */
+ num_channel_types
+};
+
+extern const char *cu3088_type[num_channel_types];
+extern int register_cu3088_discipline(struct ccwgroup_driver *);
+extern void unregister_cu3088_discipline(struct ccwgroup_driver *);
+
+#endif
diff --git a/drivers/s390/net/fsm.c b/drivers/s390/net/fsm.c
new file mode 100644
index 0000000..fa09440
--- /dev/null
+++ b/drivers/s390/net/fsm.c
@@ -0,0 +1,220 @@
+/**
+ * $Id: fsm.c,v 1.6 2003/10/15 11:37:29 mschwide Exp $
+ *
+ * A generic FSM based on fsm used in isdn4linux
+ *
+ */
+
+#include "fsm.h"
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+
+MODULE_AUTHOR("(C) 2000 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
+MODULE_DESCRIPTION("Finite state machine helper functions");
+MODULE_LICENSE("GPL");
+
+fsm_instance *
+init_fsm(char *name, const char **state_names, const char **event_names, int nr_states,
+ int nr_events, const fsm_node *tmpl, int tmpl_len, int order)
+{
+ int i;
+ fsm_instance *this;
+ fsm_function_t *m;
+ fsm *f;
+
+ this = (fsm_instance *)kmalloc(sizeof(fsm_instance), order);
+ if (this == NULL) {
+ printk(KERN_WARNING
+ "fsm(%s): init_fsm: Couldn't alloc instance\n", name);
+ return NULL;
+ }
+ memset(this, 0, sizeof(fsm_instance));
+ strlcpy(this->name, name, sizeof(this->name));
+
+ f = (fsm *)kmalloc(sizeof(fsm), order);
+ if (f == NULL) {
+ printk(KERN_WARNING
+ "fsm(%s): init_fsm: Couldn't alloc fsm\n", name);
+ kfree_fsm(this);
+ return NULL;
+ }
+ memset(f, 0, sizeof(fsm));
+ f->nr_events = nr_events;
+ f->nr_states = nr_states;
+ f->event_names = event_names;
+ f->state_names = state_names;
+ this->f = f;
+
+ m = (fsm_function_t *)kmalloc(
+ sizeof(fsm_function_t) * nr_states * nr_events, order);
+ if (m == NULL) {
+ printk(KERN_WARNING
+ "fsm(%s): init_fsm: Couldn't alloc jumptable\n", name);
+ kfree_fsm(this);
+ return NULL;
+ }
+ memset(m, 0, sizeof(fsm_function_t) * f->nr_states * f->nr_events);
+ f->jumpmatrix = m;
+
+ for (i = 0; i < tmpl_len; i++) {
+ if ((tmpl[i].cond_state >= nr_states) ||
+ (tmpl[i].cond_event >= nr_events) ) {
+ printk(KERN_ERR
+ "fsm(%s): init_fsm: Bad template l=%d st(%ld/%ld) ev(%ld/%ld)\n",
+ name, i, (long)tmpl[i].cond_state, (long)f->nr_states,
+ (long)tmpl[i].cond_event, (long)f->nr_events);
+ kfree_fsm(this);
+ return NULL;
+ } else
+ m[nr_states * tmpl[i].cond_event + tmpl[i].cond_state] =
+ tmpl[i].function;
+ }
+ return this;
+}
+
+void
+kfree_fsm(fsm_instance *this)
+{
+ if (this) {
+ if (this->f) {
+ if (this->f->jumpmatrix)
+ kfree(this->f->jumpmatrix);
+ kfree(this->f);
+ }
+ kfree(this);
+ } else
+ printk(KERN_WARNING
+ "fsm: kfree_fsm called with NULL argument\n");
+}
+
+#if FSM_DEBUG_HISTORY
+void
+fsm_print_history(fsm_instance *fi)
+{
+ int idx = 0;
+ int i;
+
+ if (fi->history_size >= FSM_HISTORY_SIZE)
+ idx = fi->history_index;
+
+ printk(KERN_DEBUG "fsm(%s): History:\n", fi->name);
+ for (i = 0; i < fi->history_size; i++) {
+ int e = fi->history[idx].event;
+ int s = fi->history[idx++].state;
+ idx %= FSM_HISTORY_SIZE;
+ if (e == -1)
+ printk(KERN_DEBUG " S=%s\n",
+ fi->f->state_names[s]);
+ else
+ printk(KERN_DEBUG " S=%s E=%s\n",
+ fi->f->state_names[s],
+ fi->f->event_names[e]);
+ }
+ fi->history_size = fi->history_index = 0;
+}
+
+void
+fsm_record_history(fsm_instance *fi, int state, int event)
+{
+ fi->history[fi->history_index].state = state;
+ fi->history[fi->history_index++].event = event;
+ fi->history_index %= FSM_HISTORY_SIZE;
+ if (fi->history_size < FSM_HISTORY_SIZE)
+ fi->history_size++;
+}
+#endif
+
+const char *
+fsm_getstate_str(fsm_instance *fi)
+{
+ int st = atomic_read(&fi->state);
+ if (st >= fi->f->nr_states)
+ return "Invalid";
+ return fi->f->state_names[st];
+}
+
+static void
+fsm_expire_timer(fsm_timer *this)
+{
+#if FSM_TIMER_DEBUG
+ printk(KERN_DEBUG "fsm(%s): Timer %p expired\n",
+ this->fi->name, this);
+#endif
+ fsm_event(this->fi, this->expire_event, this->event_arg);
+}
+
+void
+fsm_settimer(fsm_instance *fi, fsm_timer *this)
+{
+ this->fi = fi;
+ this->tl.function = (void *)fsm_expire_timer;
+ this->tl.data = (long)this;
+#if FSM_TIMER_DEBUG
+ printk(KERN_DEBUG "fsm(%s): Create timer %p\n", fi->name,
+ this);
+#endif
+ init_timer(&this->tl);
+}
+
+void
+fsm_deltimer(fsm_timer *this)
+{
+#if FSM_TIMER_DEBUG
+ printk(KERN_DEBUG "fsm(%s): Delete timer %p\n", this->fi->name,
+ this);
+#endif
+ del_timer(&this->tl);
+}
+
+int
+fsm_addtimer(fsm_timer *this, int millisec, int event, void *arg)
+{
+
+#if FSM_TIMER_DEBUG
+ printk(KERN_DEBUG "fsm(%s): Add timer %p %dms\n",
+ this->fi->name, this, millisec);
+#endif
+
+ init_timer(&this->tl);
+ this->tl.function = (void *)fsm_expire_timer;
+ this->tl.data = (long)this;
+ this->expire_event = event;
+ this->event_arg = arg;
+ this->tl.expires = jiffies + (millisec * HZ) / 1000;
+ add_timer(&this->tl);
+ return 0;
+}
+
+/* FIXME: this function is never used, why */
+void
+fsm_modtimer(fsm_timer *this, int millisec, int event, void *arg)
+{
+
+#if FSM_TIMER_DEBUG
+ printk(KERN_DEBUG "fsm(%s): Restart timer %p %dms\n",
+ this->fi->name, this, millisec);
+#endif
+
+ del_timer(&this->tl);
+ init_timer(&this->tl);
+ this->tl.function = (void *)fsm_expire_timer;
+ this->tl.data = (long)this;
+ this->expire_event = event;
+ this->event_arg = arg;
+ this->tl.expires = jiffies + (millisec * HZ) / 1000;
+ add_timer(&this->tl);
+}
+
+EXPORT_SYMBOL(init_fsm);
+EXPORT_SYMBOL(kfree_fsm);
+EXPORT_SYMBOL(fsm_settimer);
+EXPORT_SYMBOL(fsm_deltimer);
+EXPORT_SYMBOL(fsm_addtimer);
+EXPORT_SYMBOL(fsm_modtimer);
+EXPORT_SYMBOL(fsm_getstate_str);
+
+#if FSM_DEBUG_HISTORY
+EXPORT_SYMBOL(fsm_print_history);
+EXPORT_SYMBOL(fsm_record_history);
+#endif
diff --git a/drivers/s390/net/fsm.h b/drivers/s390/net/fsm.h
new file mode 100644
index 0000000..f9a0110
--- /dev/null
+++ b/drivers/s390/net/fsm.h
@@ -0,0 +1,265 @@
+/* $Id: fsm.h,v 1.1.1.1 2002/03/13 19:33:09 mschwide Exp $
+ */
+#ifndef _FSM_H_
+#define _FSM_H_
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/timer.h>
+#include <linux/time.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <asm/atomic.h>
+
+/**
+ * Define this to get debugging messages.
+ */
+#define FSM_DEBUG 0
+
+/**
+ * Define this to get debugging massages for
+ * timer handling.
+ */
+#define FSM_TIMER_DEBUG 0
+
+/**
+ * Define these to record a history of
+ * Events/Statechanges and print it if a
+ * action_function is not found.
+ */
+#define FSM_DEBUG_HISTORY 0
+#define FSM_HISTORY_SIZE 40
+
+struct fsm_instance_t;
+
+/**
+ * Definition of an action function, called by a FSM
+ */
+typedef void (*fsm_function_t)(struct fsm_instance_t *, int, void *);
+
+/**
+ * Internal jump table for a FSM
+ */
+typedef struct {
+ fsm_function_t *jumpmatrix;
+ int nr_events;
+ int nr_states;
+ const char **event_names;
+ const char **state_names;
+} fsm;
+
+#if FSM_DEBUG_HISTORY
+/**
+ * Element of State/Event history used for debugging.
+ */
+typedef struct {
+ int state;
+ int event;
+} fsm_history;
+#endif
+
+/**
+ * Representation of a FSM
+ */
+typedef struct fsm_instance_t {
+ fsm *f;
+ atomic_t state;
+ char name[16];
+ void *userdata;
+ int userint;
+#if FSM_DEBUG_HISTORY
+ int history_index;
+ int history_size;
+ fsm_history history[FSM_HISTORY_SIZE];
+#endif
+} fsm_instance;
+
+/**
+ * Description of a state-event combination
+ */
+typedef struct {
+ int cond_state;
+ int cond_event;
+ fsm_function_t function;
+} fsm_node;
+
+/**
+ * Description of a FSM Timer.
+ */
+typedef struct {
+ fsm_instance *fi;
+ struct timer_list tl;
+ int expire_event;
+ void *event_arg;
+} fsm_timer;
+
+/**
+ * Creates an FSM
+ *
+ * @param name Name of this instance for logging purposes.
+ * @param state_names An array of names for all states for logging purposes.
+ * @param event_names An array of names for all events for logging purposes.
+ * @param nr_states Number of states for this instance.
+ * @param nr_events Number of events for this instance.
+ * @param tmpl An array of fsm_nodes, describing this FSM.
+ * @param tmpl_len Length of the describing array.
+ * @param order Parameter for allocation of the FSM data structs.
+ */
+extern fsm_instance *
+init_fsm(char *name, const char **state_names,
+ const char **event_names,
+ int nr_states, int nr_events, const fsm_node *tmpl,
+ int tmpl_len, int order);
+
+/**
+ * Releases an FSM
+ *
+ * @param fi Pointer to an FSM, previously created with init_fsm.
+ */
+extern void kfree_fsm(fsm_instance *fi);
+
+#if FSM_DEBUG_HISTORY
+extern void
+fsm_print_history(fsm_instance *fi);
+
+extern void
+fsm_record_history(fsm_instance *fi, int state, int event);
+#endif
+
+/**
+ * Emits an event to a FSM.
+ * If an action function is defined for the current state/event combination,
+ * this function is called.
+ *
+ * @param fi Pointer to FSM which should receive the event.
+ * @param event The event do be delivered.
+ * @param arg A generic argument, handed to the action function.
+ *
+ * @return 0 on success,
+ * 1 if current state or event is out of range
+ * !0 if state and event in range, but no action defined.
+ */
+extern __inline__ int
+fsm_event(fsm_instance *fi, int event, void *arg)
+{
+ fsm_function_t r;
+ int state = atomic_read(&fi->state);
+
+ if ((state >= fi->f->nr_states) ||
+ (event >= fi->f->nr_events) ) {
+ printk(KERN_ERR "fsm(%s): Invalid state st(%ld/%ld) ev(%d/%ld)\n",
+ fi->name, (long)state,(long)fi->f->nr_states, event,
+ (long)fi->f->nr_events);
+#if FSM_DEBUG_HISTORY
+ fsm_print_history(fi);
+#endif
+ return 1;
+ }
+ r = fi->f->jumpmatrix[fi->f->nr_states * event + state];
+ if (r) {
+#if FSM_DEBUG
+ printk(KERN_DEBUG "fsm(%s): state %s event %s\n",
+ fi->name, fi->f->state_names[state],
+ fi->f->event_names[event]);
+#endif
+#if FSM_DEBUG_HISTORY
+ fsm_record_history(fi, state, event);
+#endif
+ r(fi, event, arg);
+ return 0;
+ } else {
+#if FSM_DEBUG || FSM_DEBUG_HISTORY
+ printk(KERN_DEBUG "fsm(%s): no function for event %s in state %s\n",
+ fi->name, fi->f->event_names[event],
+ fi->f->state_names[state]);
+#endif
+#if FSM_DEBUG_HISTORY
+ fsm_print_history(fi);
+#endif
+ return !0;
+ }
+}
+
+/**
+ * Modifies the state of an FSM.
+ * This does <em>not</em> trigger an event or calls an action function.
+ *
+ * @param fi Pointer to FSM
+ * @param state The new state for this FSM.
+ */
+extern __inline__ void
+fsm_newstate(fsm_instance *fi, int newstate)
+{
+ atomic_set(&fi->state,newstate);
+#if FSM_DEBUG_HISTORY
+ fsm_record_history(fi, newstate, -1);
+#endif
+#if FSM_DEBUG
+ printk(KERN_DEBUG "fsm(%s): New state %s\n", fi->name,
+ fi->f->state_names[newstate]);
+#endif
+}
+
+/**
+ * Retrieves the state of an FSM
+ *
+ * @param fi Pointer to FSM
+ *
+ * @return The current state of the FSM.
+ */
+extern __inline__ int
+fsm_getstate(fsm_instance *fi)
+{
+ return atomic_read(&fi->state);
+}
+
+/**
+ * Retrieves the name of the state of an FSM
+ *
+ * @param fi Pointer to FSM
+ *
+ * @return The current state of the FSM in a human readable form.
+ */
+extern const char *fsm_getstate_str(fsm_instance *fi);
+
+/**
+ * Initializes a timer for an FSM.
+ * This prepares an fsm_timer for usage with fsm_addtimer.
+ *
+ * @param fi Pointer to FSM
+ * @param timer The timer to be initialized.
+ */
+extern void fsm_settimer(fsm_instance *fi, fsm_timer *);
+
+/**
+ * Clears a pending timer of an FSM instance.
+ *
+ * @param timer The timer to clear.
+ */
+extern void fsm_deltimer(fsm_timer *timer);
+
+/**
+ * Adds and starts a timer to an FSM instance.
+ *
+ * @param timer The timer to be added. The field fi of that timer
+ * must have been set to point to the instance.
+ * @param millisec Duration, after which the timer should expire.
+ * @param event Event, to trigger if timer expires.
+ * @param arg Generic argument, provided to expiry function.
+ *
+ * @return 0 on success, -1 if timer is already active.
+ */
+extern int fsm_addtimer(fsm_timer *timer, int millisec, int event, void *arg);
+
+/**
+ * Modifies a timer of an FSM.
+ *
+ * @param timer The timer to modify.
+ * @param millisec Duration, after which the timer should expire.
+ * @param event Event, to trigger if timer expires.
+ * @param arg Generic argument, provided to expiry function.
+ */
+extern void fsm_modtimer(fsm_timer *timer, int millisec, int event, void *arg);
+
+#endif /* _FSM_H_ */
diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
new file mode 100644
index 0000000..1ac6563
--- /dev/null
+++ b/drivers/s390/net/iucv.c
@@ -0,0 +1,2567 @@
+/*
+ * $Id: iucv.c,v 1.43 2005/02/09 14:47:43 braunu Exp $
+ *
+ * IUCV network driver
+ *
+ * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s):
+ * Original source:
+ * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000
+ * Xenia Tkatschow (xenia@us.ibm.com)
+ * 2Gb awareness and general cleanup:
+ * Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ *
+ * Documentation used:
+ * The original source
+ * CP Programming Service, IBM document # SC24-5760
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * RELEASE-TAG: IUCV lowlevel driver $Revision: 1.43 $
+ *
+ */
+
+/* #define DEBUG */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/config.h>
+
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <asm/atomic.h>
+#include "iucv.h"
+#include <asm/io.h>
+#include <asm/s390_ext.h>
+#include <asm/ebcdic.h>
+#include <asm/smp.h>
+#include <asm/ccwdev.h> //for root device stuff
+
+/* FLAGS:
+ * All flags are defined in the field IPFLAGS1 of each function
+ * and can be found in CP Programming Services.
+ * IPSRCCLS - Indicates you have specified a source class
+ * IPFGMCL - Indicates you have specified a target class
+ * IPFGPID - Indicates you have specified a pathid
+ * IPFGMID - Indicates you have specified a message ID
+ * IPANSLST - Indicates that you are using an address list for
+ * reply data
+ * IPBUFLST - Indicates that you are using an address list for
+ * message data
+ */
+
+#define IPSRCCLS 0x01
+#define IPFGMCL 0x01
+#define IPFGPID 0x02
+#define IPFGMID 0x04
+#define IPANSLST 0x08
+#define IPBUFLST 0x40
+
+static int
+iucv_bus_match (struct device *dev, struct device_driver *drv)
+{
+ return 0;
+}
+
+struct bus_type iucv_bus = {
+ .name = "iucv",
+ .match = iucv_bus_match,
+};
+
+struct device *iucv_root;
+
+/* General IUCV interrupt structure */
+typedef struct {
+ __u16 ippathid;
+ __u8 res1;
+ __u8 iptype;
+ __u32 res2;
+ __u8 ipvmid[8];
+ __u8 res3[24];
+} iucv_GeneralInterrupt;
+
+static iucv_GeneralInterrupt *iucv_external_int_buffer = NULL;
+
+/* Spin Lock declaration */
+
+static DEFINE_SPINLOCK(iucv_lock);
+
+static int messagesDisabled = 0;
+
+/***************INTERRUPT HANDLING ***************/
+
+typedef struct {
+ struct list_head queue;
+ iucv_GeneralInterrupt data;
+} iucv_irqdata;
+
+static struct list_head iucv_irq_queue;
+static DEFINE_SPINLOCK(iucv_irq_queue_lock);
+
+/*
+ *Internal function prototypes
+ */
+static void iucv_tasklet_handler(unsigned long);
+static void iucv_irq_handler(struct pt_regs *, __u16);
+
+static DECLARE_TASKLET(iucv_tasklet,iucv_tasklet_handler,0);
+
+/************ FUNCTION ID'S ****************************/
+
+#define ACCEPT 10
+#define CONNECT 11
+#define DECLARE_BUFFER 12
+#define PURGE 9
+#define QUERY 0
+#define QUIESCE 13
+#define RECEIVE 5
+#define REJECT 8
+#define REPLY 6
+#define RESUME 14
+#define RETRIEVE_BUFFER 2
+#define SEND 4
+#define SETMASK 16
+#define SEVER 15
+
+/**
+ * Structure: handler
+ * members: list - list management.
+ * structure: id
+ * userid - 8 char array of machine identification
+ * user_data - 16 char array for user identification
+ * mask - 24 char array used to compare the 2 previous
+ * interrupt_table - vector of interrupt functions.
+ * pgm_data - ulong, application data that is passed
+ * to the interrupt handlers
+*/
+typedef struct handler_t {
+ struct list_head list;
+ struct {
+ __u8 userid[8];
+ __u8 user_data[16];
+ __u8 mask[24];
+ } id;
+ iucv_interrupt_ops_t *interrupt_table;
+ void *pgm_data;
+} handler;
+
+/**
+ * iucv_handler_table: List of registered handlers.
+ */
+static struct list_head iucv_handler_table;
+
+/**
+ * iucv_pathid_table: an array of *handler pointing into
+ * iucv_handler_table for fast indexing by pathid;
+ */
+static handler **iucv_pathid_table;
+
+static unsigned long max_connections;
+
+/**
+ * iucv_cpuid: contains the logical cpu number of the cpu which
+ * has declared the iucv buffer by issuing DECLARE_BUFFER.
+ * If no cpu has done the initialization iucv_cpuid contains -1.
+ */
+static int iucv_cpuid = -1;
+/**
+ * register_flag: is 0 when external interrupt has not been registered
+ */
+static int register_flag;
+
+/****************FIVE 40-BYTE PARAMETER STRUCTURES******************/
+/* Data struct 1: iparml_control
+ * Used for iucv_accept
+ * iucv_connect
+ * iucv_quiesce
+ * iucv_resume
+ * iucv_sever
+ * iucv_retrieve_buffer
+ * Data struct 2: iparml_dpl (data in parameter list)
+ * Used for iucv_send_prmmsg
+ * iucv_send2way_prmmsg
+ * iucv_send2way_prmmsg_array
+ * iucv_reply_prmmsg
+ * Data struct 3: iparml_db (data in a buffer)
+ * Used for iucv_receive
+ * iucv_receive_array
+ * iucv_reject
+ * iucv_reply
+ * iucv_reply_array
+ * iucv_send
+ * iucv_send_array
+ * iucv_send2way
+ * iucv_send2way_array
+ * iucv_declare_buffer
+ * Data struct 4: iparml_purge
+ * Used for iucv_purge
+ * iucv_query
+ * Data struct 5: iparml_set_mask
+ * Used for iucv_set_mask
+ */
+
+typedef struct {
+ __u16 ippathid;
+ __u8 ipflags1;
+ __u8 iprcode;
+ __u16 ipmsglim;
+ __u16 res1;
+ __u8 ipvmid[8];
+ __u8 ipuser[16];
+ __u8 iptarget[8];
+} iparml_control;
+
+typedef struct {
+ __u16 ippathid;
+ __u8 ipflags1;
+ __u8 iprcode;
+ __u32 ipmsgid;
+ __u32 iptrgcls;
+ __u8 iprmmsg[8];
+ __u32 ipsrccls;
+ __u32 ipmsgtag;
+ __u32 ipbfadr2;
+ __u32 ipbfln2f;
+ __u32 res;
+} iparml_dpl;
+
+typedef struct {
+ __u16 ippathid;
+ __u8 ipflags1;
+ __u8 iprcode;
+ __u32 ipmsgid;
+ __u32 iptrgcls;
+ __u32 ipbfadr1;
+ __u32 ipbfln1f;
+ __u32 ipsrccls;
+ __u32 ipmsgtag;
+ __u32 ipbfadr2;
+ __u32 ipbfln2f;
+ __u32 res;
+} iparml_db;
+
+typedef struct {
+ __u16 ippathid;
+ __u8 ipflags1;
+ __u8 iprcode;
+ __u32 ipmsgid;
+ __u8 ipaudit[3];
+ __u8 res1[5];
+ __u32 res2;
+ __u32 ipsrccls;
+ __u32 ipmsgtag;
+ __u32 res3[3];
+} iparml_purge;
+
+typedef struct {
+ __u8 ipmask;
+ __u8 res1[2];
+ __u8 iprcode;
+ __u32 res2[9];
+} iparml_set_mask;
+
+typedef struct {
+ union {
+ iparml_control p_ctrl;
+ iparml_dpl p_dpl;
+ iparml_db p_db;
+ iparml_purge p_purge;
+ iparml_set_mask p_set_mask;
+ } param;
+ atomic_t in_use;
+ __u32 res;
+} __attribute__ ((aligned(8))) iucv_param;
+#define PARAM_POOL_SIZE (PAGE_SIZE / sizeof(iucv_param))
+
+static iucv_param * iucv_param_pool;
+
+MODULE_AUTHOR("(C) 2001 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
+MODULE_DESCRIPTION("Linux for S/390 IUCV lowlevel driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Debugging stuff
+ *******************************************************************************/
+
+
+#ifdef DEBUG
+static int debuglevel = 0;
+
+module_param(debuglevel, int, 0);
+MODULE_PARM_DESC(debuglevel,
+ "Specifies the debug level (0=off ... 3=all)");
+
+static void
+iucv_dumpit(char *title, void *buf, int len)
+{
+ int i;
+ __u8 *p = (__u8 *)buf;
+
+ if (debuglevel < 3)
+ return;
+
+ printk(KERN_DEBUG "%s\n", title);
+ printk(" ");
+ for (i = 0; i < len; i++) {
+ if (!(i % 16) && i != 0)
+ printk ("\n ");
+ else if (!(i % 4) && i != 0)
+ printk(" ");
+ printk("%02X", *p++);
+ }
+ if (len % 16)
+ printk ("\n");
+ return;
+}
+#define iucv_debug(lvl, fmt, args...) \
+do { \
+ if (debuglevel >= lvl) \
+ printk(KERN_DEBUG "%s: " fmt "\n", __FUNCTION__ , ## args); \
+} while (0)
+
+#else
+
+#define iucv_debug(lvl, fmt, args...)
+#define iucv_dumpit(title, buf, len)
+
+#endif
+
+/*
+ * Internal functions
+ *******************************************************************************/
+
+/**
+ * print start banner
+ */
+static void
+iucv_banner(void)
+{
+ char vbuf[] = "$Revision: 1.43 $";
+ char *version = vbuf;
+
+ if ((version = strchr(version, ':'))) {
+ char *p = strchr(version + 1, '$');
+ if (p)
+ *p = '\0';
+ } else
+ version = " ??? ";
+ printk(KERN_INFO
+ "IUCV lowlevel driver Version%s initialized\n", version);
+}
+
+/**
+ * iucv_init - Initialization
+ *
+ * Allocates and initializes various data structures.
+ */
+static int
+iucv_init(void)
+{
+ int ret;
+
+ if (iucv_external_int_buffer)
+ return 0;
+
+ if (!MACHINE_IS_VM) {
+ printk(KERN_ERR "IUCV: IUCV connection needs VM as base\n");
+ return -EPROTONOSUPPORT;
+ }
+
+ ret = bus_register(&iucv_bus);
+ if (ret) {
+ printk(KERN_ERR "IUCV: failed to register bus.\n");
+ return ret;
+ }
+
+ iucv_root = s390_root_dev_register("iucv");
+ if (IS_ERR(iucv_root)) {
+ printk(KERN_ERR "IUCV: failed to register iucv root.\n");
+ bus_unregister(&iucv_bus);
+ return PTR_ERR(iucv_root);
+ }
+
+ /* Note: GFP_DMA used used to get memory below 2G */
+ iucv_external_int_buffer = kmalloc(sizeof(iucv_GeneralInterrupt),
+ GFP_KERNEL|GFP_DMA);
+ if (!iucv_external_int_buffer) {
+ printk(KERN_WARNING
+ "%s: Could not allocate external interrupt buffer\n",
+ __FUNCTION__);
+ s390_root_dev_unregister(iucv_root);
+ bus_unregister(&iucv_bus);
+ return -ENOMEM;
+ }
+ memset(iucv_external_int_buffer, 0, sizeof(iucv_GeneralInterrupt));
+
+ /* Initialize parameter pool */
+ iucv_param_pool = kmalloc(sizeof(iucv_param) * PARAM_POOL_SIZE,
+ GFP_KERNEL|GFP_DMA);
+ if (!iucv_param_pool) {
+ printk(KERN_WARNING "%s: Could not allocate param pool\n",
+ __FUNCTION__);
+ kfree(iucv_external_int_buffer);
+ iucv_external_int_buffer = NULL;
+ s390_root_dev_unregister(iucv_root);
+ bus_unregister(&iucv_bus);
+ return -ENOMEM;
+ }
+ memset(iucv_param_pool, 0, sizeof(iucv_param) * PARAM_POOL_SIZE);
+
+ /* Initialize irq queue */
+ INIT_LIST_HEAD(&iucv_irq_queue);
+
+ /* Initialize handler table */
+ INIT_LIST_HEAD(&iucv_handler_table);
+
+ iucv_banner();
+ return 0;
+}
+
+/**
+ * iucv_exit - De-Initialization
+ *
+ * Frees everything allocated from iucv_init.
+ */
+static int iucv_retrieve_buffer (void);
+
+static void
+iucv_exit(void)
+{
+ iucv_retrieve_buffer();
+ if (iucv_external_int_buffer) {
+ kfree(iucv_external_int_buffer);
+ iucv_external_int_buffer = NULL;
+ }
+ if (iucv_param_pool) {
+ kfree(iucv_param_pool);
+ iucv_param_pool = NULL;
+ }
+ s390_root_dev_unregister(iucv_root);
+ bus_unregister(&iucv_bus);
+ printk(KERN_INFO "IUCV lowlevel driver unloaded\n");
+}
+
+/**
+ * grab_param: - Get a parameter buffer from the pre-allocated pool.
+ *
+ * This function searches for an unused element in the pre-allocated pool
+ * of parameter buffers. If one is found, it marks it "in use" and returns
+ * a pointer to it. The calling function is responsible for releasing it
+ * when it has finished its usage.
+ *
+ * Returns: A pointer to iucv_param.
+ */
+static __inline__ iucv_param *
+grab_param(void)
+{
+ iucv_param *ptr;
+ static int hint = 0;
+
+ ptr = iucv_param_pool + hint;
+ do {
+ ptr++;
+ if (ptr >= iucv_param_pool + PARAM_POOL_SIZE)
+ ptr = iucv_param_pool;
+ } while (atomic_compare_and_swap(0, 1, &ptr->in_use));
+ hint = ptr - iucv_param_pool;
+
+ memset(&ptr->param, 0, sizeof(ptr->param));
+ return ptr;
+}
+
+/**
+ * release_param - Release a parameter buffer.
+ * @p: A pointer to a struct iucv_param, previously obtained by calling
+ * grab_param().
+ *
+ * This function marks the specified parameter buffer "unused".
+ */
+static __inline__ void
+release_param(void *p)
+{
+ atomic_set(&((iucv_param *)p)->in_use, 0);
+}
+
+/**
+ * iucv_add_handler: - Add a new handler
+ * @new_handler: handle that is being entered into chain.
+ *
+ * Places new handle on iucv_handler_table, if identical handler is not
+ * found.
+ *
+ * Returns: 0 on success, !0 on failure (handler already in chain).
+ */
+static int
+iucv_add_handler (handler *new)
+{
+ ulong flags;
+
+ iucv_debug(1, "entering");
+ iucv_dumpit("handler:", new, sizeof(handler));
+
+ spin_lock_irqsave (&iucv_lock, flags);
+ if (!list_empty(&iucv_handler_table)) {
+ struct list_head *lh;
+
+ /**
+ * Search list for handler with identical id. If one
+ * is found, the new handler is _not_ added.
+ */
+ list_for_each(lh, &iucv_handler_table) {
+ handler *h = list_entry(lh, handler, list);
+ if (!memcmp(&new->id, &h->id, sizeof(h->id))) {
+ iucv_debug(1, "ret 1");
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ return 1;
+ }
+ }
+ }
+ /**
+ * If we get here, no handler was found.
+ */
+ INIT_LIST_HEAD(&new->list);
+ list_add(&new->list, &iucv_handler_table);
+ spin_unlock_irqrestore (&iucv_lock, flags);
+
+ iucv_debug(1, "exiting");
+ return 0;
+}
+
+/**
+ * b2f0:
+ * @code: identifier of IUCV call to CP.
+ * @parm: pointer to 40 byte iparml area passed to CP
+ *
+ * Calls CP to execute IUCV commands.
+ *
+ * Returns: return code from CP's IUCV call
+ */
+static __inline__ ulong
+b2f0(__u32 code, void *parm)
+{
+ iucv_dumpit("iparml before b2f0 call:", parm, sizeof(iucv_param));
+
+ asm volatile (
+ "LRA 1,0(%1)\n\t"
+ "LR 0,%0\n\t"
+ ".long 0xb2f01000"
+ :
+ : "d" (code), "a" (parm)
+ : "0", "1"
+ );
+
+ iucv_dumpit("iparml after b2f0 call:", parm, sizeof(iucv_param));
+
+ return (unsigned long)*((__u8 *)(parm + 3));
+}
+
+/*
+ * Name: iucv_add_pathid
+ * Purpose: Adds a path id to the system.
+ * Input: pathid - pathid that is going to be entered into system
+ * handle - address of handler that the pathid will be associated
+ * with.
+ * pgm_data - token passed in by application.
+ * Output: 0: successful addition of pathid
+ * - EINVAL - pathid entry is being used by another application
+ * - ENOMEM - storage allocation for a new pathid table failed
+*/
+static int
+__iucv_add_pathid(__u16 pathid, handler *handler)
+{
+
+ iucv_debug(1, "entering");
+
+ iucv_debug(1, "handler is pointing to %p", handler);
+
+ if (pathid > (max_connections - 1))
+ return -EINVAL;
+
+ if (iucv_pathid_table[pathid]) {
+ iucv_debug(1, "pathid entry is %p", iucv_pathid_table[pathid]);
+ printk(KERN_WARNING
+ "%s: Pathid being used, error.\n", __FUNCTION__);
+ return -EINVAL;
+ }
+ iucv_pathid_table[pathid] = handler;
+
+ iucv_debug(1, "exiting");
+ return 0;
+} /* end of add_pathid function */
+
+static int
+iucv_add_pathid(__u16 pathid, handler *handler)
+{
+ ulong flags;
+ int rc;
+
+ spin_lock_irqsave (&iucv_lock, flags);
+ rc = __iucv_add_pathid(pathid, handler);
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ return rc;
+}
+
+static void
+iucv_remove_pathid(__u16 pathid)
+{
+ ulong flags;
+
+ if (pathid > (max_connections - 1))
+ return;
+
+ spin_lock_irqsave (&iucv_lock, flags);
+ iucv_pathid_table[pathid] = NULL;
+ spin_unlock_irqrestore (&iucv_lock, flags);
+}
+
+/**
+ * iucv_declare_buffer_cpuid
+ * Register at VM for subsequent IUCV operations. This is executed
+ * on the reserved CPU iucv_cpuid. Called from iucv_declare_buffer().
+ */
+static void
+iucv_declare_buffer_cpuid (void *result)
+{
+ iparml_db *parm;
+
+ parm = (iparml_db *)grab_param();
+ parm->ipbfadr1 = virt_to_phys(iucv_external_int_buffer);
+ if ((*((ulong *)result) = b2f0(DECLARE_BUFFER, parm)) == 1)
+ *((ulong *)result) = parm->iprcode;
+ release_param(parm);
+}
+
+/**
+ * iucv_retrieve_buffer_cpuid:
+ * Unregister IUCV usage at VM. This is always executed on the same
+ * cpu that registered the buffer to VM.
+ * Called from iucv_retrieve_buffer().
+ */
+static void
+iucv_retrieve_buffer_cpuid (void *cpu)
+{
+ iparml_control *parm;
+
+ parm = (iparml_control *)grab_param();
+ b2f0(RETRIEVE_BUFFER, parm);
+ release_param(parm);
+}
+
+/**
+ * Name: iucv_declare_buffer
+ * Purpose: Specifies the guests real address of an external
+ * interrupt.
+ * Input: void
+ * Output: iprcode - return code from b2f0 call
+ */
+static int
+iucv_declare_buffer (void)
+{
+ unsigned long flags;
+ ulong b2f0_result;
+
+ iucv_debug(1, "entering");
+ b2f0_result = -ENODEV;
+ spin_lock_irqsave (&iucv_lock, flags);
+ if (iucv_cpuid == -1) {
+ /* Reserve any cpu for use by iucv. */
+ iucv_cpuid = smp_get_cpu(CPU_MASK_ALL);
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ smp_call_function_on(iucv_declare_buffer_cpuid,
+ &b2f0_result, 0, 1, iucv_cpuid);
+ if (b2f0_result) {
+ smp_put_cpu(iucv_cpuid);
+ iucv_cpuid = -1;
+ }
+ iucv_debug(1, "Address of EIB = %p", iucv_external_int_buffer);
+ } else {
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ b2f0_result = 0;
+ }
+ iucv_debug(1, "exiting");
+ return b2f0_result;
+}
+
+/**
+ * iucv_retrieve_buffer:
+ *
+ * Terminates all use of IUCV.
+ * Returns: return code from CP
+ */
+static int
+iucv_retrieve_buffer (void)
+{
+ iucv_debug(1, "entering");
+ if (iucv_cpuid != -1) {
+ smp_call_function_on(iucv_retrieve_buffer_cpuid,
+ 0, 0, 1, iucv_cpuid);
+ /* Release the cpu reserved by iucv_declare_buffer. */
+ smp_put_cpu(iucv_cpuid);
+ iucv_cpuid = -1;
+ }
+ iucv_debug(1, "exiting");
+ return 0;
+}
+
+/**
+ * iucv_remove_handler:
+ * @users_handler: handler to be removed
+ *
+ * Remove handler when application unregisters.
+ */
+static void
+iucv_remove_handler(handler *handler)
+{
+ unsigned long flags;
+
+ if ((!iucv_pathid_table) || (!handler))
+ return;
+
+ iucv_debug(1, "entering");
+
+ spin_lock_irqsave (&iucv_lock, flags);
+ list_del(&handler->list);
+ if (list_empty(&iucv_handler_table)) {
+ if (register_flag) {
+ unregister_external_interrupt(0x4000, iucv_irq_handler);
+ register_flag = 0;
+ }
+ }
+ spin_unlock_irqrestore (&iucv_lock, flags);
+
+ iucv_debug(1, "exiting");
+ return;
+}
+
+/**
+ * iucv_register_program:
+ * @pgmname: user identification
+ * @userid: machine identification
+ * @pgmmask: Indicates which bits in the pgmname and userid combined will be
+ * used to determine who is given control.
+ * @ops: Address of interrupt handler table.
+ * @pgm_data: Application data to be passed to interrupt handlers.
+ *
+ * Registers an application with IUCV.
+ * Returns:
+ * The address of handler, or NULL on failure.
+ * NOTE on pgmmask:
+ * If pgmname, userid and pgmmask are provided, pgmmask is entered into the
+ * handler as is.
+ * If pgmmask is NULL, the internal mask is set to all 0xff's
+ * When userid is NULL, the first 8 bytes of the internal mask are forced
+ * to 0x00.
+ * If pgmmask and userid are NULL, the first 8 bytes of the internal mask
+ * are forced to 0x00 and the last 16 bytes to 0xff.
+ */
+
+iucv_handle_t
+iucv_register_program (__u8 pgmname[16],
+ __u8 userid[8],
+ __u8 pgmmask[24],
+ iucv_interrupt_ops_t * ops, void *pgm_data)
+{
+ ulong rc = 0; /* return code from function calls */
+ handler *new_handler;
+
+ iucv_debug(1, "entering");
+
+ if (ops == NULL) {
+ /* interrupt table is not defined */
+ printk(KERN_WARNING "%s: Interrupt table is not defined, "
+ "exiting\n", __FUNCTION__);
+ return NULL;
+ }
+ if (!pgmname) {
+ printk(KERN_WARNING "%s: pgmname not provided\n", __FUNCTION__);
+ return NULL;
+ }
+
+ /* Allocate handler entry */
+ new_handler = (handler *)kmalloc(sizeof(handler), GFP_ATOMIC);
+ if (new_handler == NULL) {
+ printk(KERN_WARNING "%s: storage allocation for new handler "
+ "failed.\n", __FUNCTION__);
+ return NULL;
+ }
+
+ if (!iucv_pathid_table) {
+ if (iucv_init()) {
+ kfree(new_handler);
+ return NULL;
+ }
+
+ max_connections = iucv_query_maxconn();
+ iucv_pathid_table = kmalloc(max_connections * sizeof(handler *),
+ GFP_ATOMIC);
+ if (iucv_pathid_table == NULL) {
+ printk(KERN_WARNING "%s: iucv_pathid_table storage "
+ "allocation failed\n", __FUNCTION__);
+ kfree(new_handler);
+ return NULL;
+ }
+ memset (iucv_pathid_table, 0, max_connections * sizeof(handler *));
+ }
+ memset(new_handler, 0, sizeof (handler));
+ memcpy(new_handler->id.user_data, pgmname,
+ sizeof (new_handler->id.user_data));
+ if (userid) {
+ memcpy (new_handler->id.userid, userid,
+ sizeof (new_handler->id.userid));
+ ASCEBC (new_handler->id.userid,
+ sizeof (new_handler->id.userid));
+ EBC_TOUPPER (new_handler->id.userid,
+ sizeof (new_handler->id.userid));
+
+ if (pgmmask) {
+ memcpy (new_handler->id.mask, pgmmask,
+ sizeof (new_handler->id.mask));
+ } else {
+ memset (new_handler->id.mask, 0xFF,
+ sizeof (new_handler->id.mask));
+ }
+ } else {
+ if (pgmmask) {
+ memcpy (new_handler->id.mask, pgmmask,
+ sizeof (new_handler->id.mask));
+ } else {
+ memset (new_handler->id.mask, 0xFF,
+ sizeof (new_handler->id.mask));
+ }
+ memset (new_handler->id.userid, 0x00,
+ sizeof (new_handler->id.userid));
+ }
+ /* fill in the rest of handler */
+ new_handler->pgm_data = pgm_data;
+ new_handler->interrupt_table = ops;
+
+ /*
+ * Check if someone else is registered with same pgmname, userid
+ * and mask. If someone is already registered with same pgmname,
+ * userid and mask, registration will fail and NULL will be returned
+ * to the application.
+ * If identical handler not found, then handler is added to list.
+ */
+ rc = iucv_add_handler(new_handler);
+ if (rc) {
+ printk(KERN_WARNING "%s: Someone already registered with same "
+ "pgmname, userid, pgmmask\n", __FUNCTION__);
+ kfree (new_handler);
+ return NULL;
+ }
+
+ rc = iucv_declare_buffer();
+ if (rc) {
+ char *err = "Unknown";
+ iucv_remove_handler(new_handler);
+ kfree(new_handler);
+ switch(rc) {
+ case 0x03:
+ err = "Directory error";
+ break;
+ case 0x0a:
+ err = "Invalid length";
+ break;
+ case 0x13:
+ err = "Buffer already exists";
+ break;
+ case 0x3e:
+ err = "Buffer overlap";
+ break;
+ case 0x5c:
+ err = "Paging or storage error";
+ break;
+ }
+ printk(KERN_WARNING "%s: iucv_declare_buffer "
+ "returned error 0x%02lx (%s)\n", __FUNCTION__, rc, err);
+ return NULL;
+ }
+ if (!register_flag) {
+ /* request the 0x4000 external interrupt */
+ rc = register_external_interrupt (0x4000, iucv_irq_handler);
+ if (rc) {
+ iucv_remove_handler(new_handler);
+ kfree (new_handler);
+ printk(KERN_WARNING "%s: "
+ "register_external_interrupt returned %ld\n",
+ __FUNCTION__, rc);
+ return NULL;
+
+ }
+ register_flag = 1;
+ }
+ iucv_debug(1, "exiting");
+ return new_handler;
+} /* end of register function */
+
+/**
+ * iucv_unregister_program:
+ * @handle: address of handler
+ *
+ * Unregister application with IUCV.
+ * Returns:
+ * 0 on success, -EINVAL, if specified handle is invalid.
+ */
+
+int
+iucv_unregister_program (iucv_handle_t handle)
+{
+ handler *h = NULL;
+ struct list_head *lh;
+ int i;
+ ulong flags;
+
+ iucv_debug(1, "entering");
+ iucv_debug(1, "address of handler is %p", h);
+
+ /* Checking if handle is valid */
+ spin_lock_irqsave (&iucv_lock, flags);
+ list_for_each(lh, &iucv_handler_table) {
+ if ((handler *)handle == list_entry(lh, handler, list)) {
+ h = (handler *)handle;
+ break;
+ }
+ }
+ if (!h) {
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ if (handle)
+ printk(KERN_WARNING
+ "%s: Handler not found in iucv_handler_table.\n",
+ __FUNCTION__);
+ else
+ printk(KERN_WARNING
+ "%s: NULL handle passed by application.\n",
+ __FUNCTION__);
+ return -EINVAL;
+ }
+
+ /**
+ * First, walk thru iucv_pathid_table and sever any pathid which is
+ * still pointing to the handler to be removed.
+ */
+ for (i = 0; i < max_connections; i++)
+ if (iucv_pathid_table[i] == h) {
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ iucv_sever(i, h->id.user_data);
+ spin_lock_irqsave(&iucv_lock, flags);
+ }
+ spin_unlock_irqrestore (&iucv_lock, flags);
+
+ iucv_remove_handler(h);
+ kfree(h);
+
+ iucv_debug(1, "exiting");
+ return 0;
+}
+
+/**
+ * iucv_accept:
+ * @pathid: Path identification number
+ * @msglim_reqstd: The number of outstanding messages requested.
+ * @user_data: Data specified by the iucv_connect function.
+ * @flags1: Contains options for this path.
+ * - IPPRTY (0x20) Specifies if you want to send priority message.
+ * - IPRMDATA (0x80) Specifies whether your program can handle a message
+ * in the parameter list.
+ * - IPQUSCE (0x40) Specifies whether you want to quiesce the path being
+ * established.
+ * @handle: Address of handler.
+ * @pgm_data: Application data passed to interrupt handlers.
+ * @flags1_out: Pointer to an int. If not NULL, on return the options for
+ * the path are stored at the given location:
+ * - IPPRTY (0x20) Indicates you may send a priority message.
+ * @msglim: Pointer to an __u16. If not NULL, on return the maximum
+ * number of outstanding messages is stored at the given
+ * location.
+ *
+ * This function is issued after the user receives a Connection Pending external
+ * interrupt and now wishes to complete the IUCV communication path.
+ * Returns:
+ * return code from CP
+ */
+int
+iucv_accept(__u16 pathid, __u16 msglim_reqstd,
+ __u8 user_data[16], int flags1,
+ iucv_handle_t handle, void *pgm_data,
+ int *flags1_out, __u16 * msglim)
+{
+ ulong b2f0_result = 0;
+ ulong flags;
+ struct list_head *lh;
+ handler *h = NULL;
+ iparml_control *parm;
+
+ iucv_debug(1, "entering");
+ iucv_debug(1, "pathid = %d", pathid);
+
+ /* Checking if handle is valid */
+ spin_lock_irqsave (&iucv_lock, flags);
+ list_for_each(lh, &iucv_handler_table) {
+ if ((handler *)handle == list_entry(lh, handler, list)) {
+ h = (handler *)handle;
+ break;
+ }
+ }
+ spin_unlock_irqrestore (&iucv_lock, flags);
+
+ if (!h) {
+ if (handle)
+ printk(KERN_WARNING
+ "%s: Handler not found in iucv_handler_table.\n",
+ __FUNCTION__);
+ else
+ printk(KERN_WARNING
+ "%s: NULL handle passed by application.\n",
+ __FUNCTION__);
+ return -EINVAL;
+ }
+
+ parm = (iparml_control *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->ipmsglim = msglim_reqstd;
+ if (user_data)
+ memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
+
+ parm->ipflags1 = (__u8)flags1;
+ b2f0_result = b2f0(ACCEPT, parm);
+
+ if (!b2f0_result) {
+ if (msglim)
+ *msglim = parm->ipmsglim;
+ if (pgm_data)
+ h->pgm_data = pgm_data;
+ if (flags1_out)
+ *flags1_out = (parm->ipflags1 & IPPRTY) ? IPPRTY : 0;
+ }
+ release_param(parm);
+
+ iucv_debug(1, "exiting");
+ return b2f0_result;
+}
+
+/**
+ * iucv_connect:
+ * @pathid: Path identification number
+ * @msglim_reqstd: Number of outstanding messages requested
+ * @user_data: 16-byte user data
+ * @userid: 8-byte of user identification
+ * @system_name: 8-byte identifying the system name
+ * @flags1: Specifies options for this path:
+ * - IPPRTY (0x20) Specifies if you want to send priority message.
+ * - IPRMDATA (0x80) Specifies whether your program can handle a message
+ * in the parameter list.
+ * - IPQUSCE (0x40) Specifies whether you want to quiesce the path being
+ * established.
+ * - IPLOCAL (0x01) Allows an application to force the partner to be on the
+ * local system. If local is specified then target class
+ * cannot be specified.
+ * @flags1_out: Pointer to an int. If not NULL, on return the options for
+ * the path are stored at the given location:
+ * - IPPRTY (0x20) Indicates you may send a priority message.
+ * @msglim: Pointer to an __u16. If not NULL, on return the maximum
+ * number of outstanding messages is stored at the given
+ * location.
+ * @handle: Address of handler.
+ * @pgm_data: Application data to be passed to interrupt handlers.
+ *
+ * This function establishes an IUCV path. Although the connect may complete
+ * successfully, you are not able to use the path until you receive an IUCV
+ * Connection Complete external interrupt.
+ * Returns: return code from CP, or one of the following
+ * - ENOMEM
+ * - return code from iucv_declare_buffer
+ * - EINVAL - invalid handle passed by application
+ * - EINVAL - pathid address is NULL
+ * - ENOMEM - pathid table storage allocation failed
+ * - return code from internal function add_pathid
+ */
+int
+iucv_connect (__u16 *pathid, __u16 msglim_reqstd,
+ __u8 user_data[16], __u8 userid[8],
+ __u8 system_name[8], int flags1,
+ int *flags1_out, __u16 * msglim,
+ iucv_handle_t handle, void *pgm_data)
+{
+ iparml_control *parm;
+ iparml_control local_parm;
+ struct list_head *lh;
+ ulong b2f0_result = 0;
+ ulong flags;
+ int add_pathid_result = 0;
+ handler *h = NULL;
+ __u8 no_memory[16] = "NO MEMORY";
+
+ iucv_debug(1, "entering");
+
+ /* Checking if handle is valid */
+ spin_lock_irqsave (&iucv_lock, flags);
+ list_for_each(lh, &iucv_handler_table) {
+ if ((handler *)handle == list_entry(lh, handler, list)) {
+ h = (handler *)handle;
+ break;
+ }
+ }
+ spin_unlock_irqrestore (&iucv_lock, flags);
+
+ if (!h) {
+ if (handle)
+ printk(KERN_WARNING
+ "%s: Handler not found in iucv_handler_table.\n",
+ __FUNCTION__);
+ else
+ printk(KERN_WARNING
+ "%s: NULL handle passed by application.\n",
+ __FUNCTION__);
+ return -EINVAL;
+ }
+
+ if (pathid == NULL) {
+ printk(KERN_WARNING "%s: NULL pathid pointer\n",
+ __FUNCTION__);
+ return -EINVAL;
+ }
+
+ parm = (iparml_control *)grab_param();
+
+ parm->ipmsglim = msglim_reqstd;
+
+ if (user_data)
+ memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
+
+ if (userid) {
+ memcpy(parm->ipvmid, userid, sizeof(parm->ipvmid));
+ ASCEBC(parm->ipvmid, sizeof(parm->ipvmid));
+ EBC_TOUPPER(parm->ipvmid, sizeof(parm->ipvmid));
+ }
+
+ if (system_name) {
+ memcpy(parm->iptarget, system_name, sizeof(parm->iptarget));
+ ASCEBC(parm->iptarget, sizeof(parm->iptarget));
+ EBC_TOUPPER(parm->iptarget, sizeof(parm->iptarget));
+ }
+
+ /* In order to establish an IUCV connection, the procedure is:
+ *
+ * b2f0(CONNECT)
+ * take the ippathid from the b2f0 call
+ * register the handler to the ippathid
+ *
+ * Unfortunately, the ConnectionEstablished message gets sent after the
+ * b2f0(CONNECT) call but before the register is handled.
+ *
+ * In order for this race condition to be eliminated, the IUCV Control
+ * Interrupts must be disabled for the above procedure.
+ *
+ * David Kennedy <dkennedy@linuxcare.com>
+ */
+
+ /* Enable everything but IUCV Control messages */
+ iucv_setmask(~(AllInterrupts));
+ messagesDisabled = 1;
+
+ spin_lock_irqsave (&iucv_lock, flags);
+ parm->ipflags1 = (__u8)flags1;
+ b2f0_result = b2f0(CONNECT, parm);
+ memcpy(&local_parm, parm, sizeof(local_parm));
+ release_param(parm);
+ parm = &local_parm;
+ if (!b2f0_result)
+ add_pathid_result = __iucv_add_pathid(parm->ippathid, h);
+ spin_unlock_irqrestore (&iucv_lock, flags);
+
+ if (b2f0_result) {
+ iucv_setmask(~0);
+ messagesDisabled = 0;
+ return b2f0_result;
+ }
+
+ *pathid = parm->ippathid;
+
+ /* Enable everything again */
+ iucv_setmask(IUCVControlInterruptsFlag);
+
+ if (msglim)
+ *msglim = parm->ipmsglim;
+ if (flags1_out)
+ *flags1_out = (parm->ipflags1 & IPPRTY) ? IPPRTY : 0;
+
+ if (add_pathid_result) {
+ iucv_sever(*pathid, no_memory);
+ printk(KERN_WARNING "%s: add_pathid failed with rc ="
+ " %d\n", __FUNCTION__, add_pathid_result);
+ return(add_pathid_result);
+ }
+
+ iucv_debug(1, "exiting");
+ return b2f0_result;
+}
+
+/**
+ * iucv_purge:
+ * @pathid: Path identification number
+ * @msgid: Message ID of message to purge.
+ * @srccls: Message class of the message to purge.
+ * @audit: Pointer to an __u32. If not NULL, on return, information about
+ * asynchronous errors that may have affected the normal completion
+ * of this message ist stored at the given location.
+ *
+ * Cancels a message you have sent.
+ * Returns: return code from CP
+ */
+int
+iucv_purge (__u16 pathid, __u32 msgid, __u32 srccls, __u32 *audit)
+{
+ iparml_purge *parm;
+ ulong b2f0_result = 0;
+
+ iucv_debug(1, "entering");
+ iucv_debug(1, "pathid = %d", pathid);
+
+ parm = (iparml_purge *)grab_param();
+
+ parm->ipmsgid = msgid;
+ parm->ippathid = pathid;
+ parm->ipsrccls = srccls;
+ parm->ipflags1 |= (IPSRCCLS | IPFGMID | IPFGPID);
+ b2f0_result = b2f0(PURGE, parm);
+
+ if (!b2f0_result && audit) {
+ memcpy(audit, parm->ipaudit, sizeof(parm->ipaudit));
+ /* parm->ipaudit has only 3 bytes */
+ *audit >>= 8;
+ }
+
+ release_param(parm);
+
+ iucv_debug(1, "b2f0_result = %ld", b2f0_result);
+ iucv_debug(1, "exiting");
+ return b2f0_result;
+}
+
+/**
+ * iucv_query_generic:
+ * @want_maxconn: Flag, describing which value is to be returned.
+ *
+ * Helper function for iucv_query_maxconn() and iucv_query_bufsize().
+ *
+ * Returns: The buffersize, if want_maxconn is 0; the maximum number of
+ * connections, if want_maxconn is 1 or an error-code < 0 on failure.
+ */
+static int
+iucv_query_generic(int want_maxconn)
+{
+ iparml_purge *parm = (iparml_purge *)grab_param();
+ int bufsize, maxconn;
+ int ccode;
+
+ /**
+ * Call b2f0 and store R0 (max buffer size),
+ * R1 (max connections) and CC.
+ */
+ asm volatile (
+ "LRA 1,0(%4)\n\t"
+ "LR 0,%3\n\t"
+ ".long 0xb2f01000\n\t"
+ "IPM %0\n\t"
+ "SRL %0,28\n\t"
+ "ST 0,%1\n\t"
+ "ST 1,%2\n\t"
+ : "=d" (ccode), "=m" (bufsize), "=m" (maxconn)
+ : "d" (QUERY), "a" (parm)
+ : "0", "1", "cc"
+ );
+ release_param(parm);
+
+ if (ccode)
+ return -EPERM;
+ if (want_maxconn)
+ return maxconn;
+ return bufsize;
+}
+
+/**
+ * iucv_query_maxconn:
+ *
+ * Determines the maximum number of connections thay may be established.
+ *
+ * Returns: Maximum number of connections that can be.
+ */
+ulong
+iucv_query_maxconn(void)
+{
+ return iucv_query_generic(1);
+}
+
+/**
+ * iucv_query_bufsize:
+ *
+ * Determines the size of the external interrupt buffer.
+ *
+ * Returns: Size of external interrupt buffer.
+ */
+ulong
+iucv_query_bufsize (void)
+{
+ return iucv_query_generic(0);
+}
+
+/**
+ * iucv_quiesce:
+ * @pathid: Path identification number
+ * @user_data: 16-byte user data
+ *
+ * Temporarily suspends incoming messages on an IUCV path.
+ * You can later reactivate the path by invoking the iucv_resume function.
+ * Returns: return code from CP
+ */
+int
+iucv_quiesce (__u16 pathid, __u8 user_data[16])
+{
+ iparml_control *parm;
+ ulong b2f0_result = 0;
+
+ iucv_debug(1, "entering");
+ iucv_debug(1, "pathid = %d", pathid);
+
+ parm = (iparml_control *)grab_param();
+
+ memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
+ parm->ippathid = pathid;
+
+ b2f0_result = b2f0(QUIESCE, parm);
+ release_param(parm);
+
+ iucv_debug(1, "b2f0_result = %ld", b2f0_result);
+ iucv_debug(1, "exiting");
+
+ return b2f0_result;
+}
+
+/**
+ * iucv_receive:
+ * @pathid: Path identification number.
+ * @buffer: Address of buffer to receive. Must be below 2G.
+ * @buflen: Length of buffer to receive.
+ * @msgid: Specifies the message ID.
+ * @trgcls: Specifies target class.
+ * @flags1_out: Receives options for path on return.
+ * - IPNORPY (0x10) Specifies whether a reply is required
+ * - IPPRTY (0x20) Specifies if you want to send priority message
+ * - IPRMDATA (0x80) Specifies the data is contained in the parameter list
+ * @residual_buffer: Receives the address of buffer updated by the number
+ * of bytes you have received on return.
+ * @residual_length: On return, receives one of the following values:
+ * - 0 If the receive buffer is the same length as
+ * the message.
+ * - Remaining bytes in buffer If the receive buffer is longer than the
+ * message.
+ * - Remaining bytes in message If the receive buffer is shorter than the
+ * message.
+ *
+ * This function receives messages that are being sent to you over established
+ * paths.
+ * Returns: return code from CP IUCV call; If the receive buffer is shorter
+ * than the message, always 5
+ * -EINVAL - buffer address is pointing to NULL
+ */
+int
+iucv_receive (__u16 pathid, __u32 msgid, __u32 trgcls,
+ void *buffer, ulong buflen,
+ int *flags1_out, ulong * residual_buffer, ulong * residual_length)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+ int moved = 0; /* number of bytes moved from parmlist to buffer */
+
+ iucv_debug(2, "entering");
+
+ if (!buffer)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ipbfadr1 = (__u32) (addr_t) buffer;
+ parm->ipbfln1f = (__u32) ((ulong) buflen);
+ parm->ipmsgid = msgid;
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipflags1 = (IPFGPID | IPFGMID | IPFGMCL);
+
+ b2f0_result = b2f0(RECEIVE, parm);
+
+ if (!b2f0_result || b2f0_result == 5) {
+ if (flags1_out) {
+ iucv_debug(2, "*flags1_out = %d", *flags1_out);
+ *flags1_out = (parm->ipflags1 & (~0x07));
+ iucv_debug(2, "*flags1_out = %d", *flags1_out);
+ }
+
+ if (!(parm->ipflags1 & IPRMDATA)) { /*msg not in parmlist */
+ if (residual_length)
+ *residual_length = parm->ipbfln1f;
+
+ if (residual_buffer)
+ *residual_buffer = parm->ipbfadr1;
+ } else {
+ moved = min_t (unsigned long, buflen, 8);
+
+ memcpy ((char *) buffer,
+ (char *) &parm->ipbfadr1, moved);
+
+ if (buflen < 8)
+ b2f0_result = 5;
+
+ if (residual_length)
+ *residual_length = abs (buflen - 8);
+
+ if (residual_buffer)
+ *residual_buffer = (ulong) (buffer + moved);
+ }
+ }
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_receive_array
+ * Purpose: This function receives messages that are being sent to you
+ * over established paths.
+ * Input: pathid - path identification number
+ * buffer - address of array of buffers
+ * buflen - total length of buffers
+ * msgid - specifies the message ID.
+ * trgcls - specifies target class
+ * Output:
+ * flags1_out: Options for path.
+ * IPNORPY - 0x10 specifies whether a reply is required
+ * IPPRTY - 0x20 specifies if you want to send priority message
+ * IPRMDATA - 0x80 specifies the data is contained in the parameter list
+ * residual_buffer - address points to the current list entry IUCV
+ * is working on.
+ * residual_length -
+ * Contains one of the following values, if the receive buffer is:
+ * The same length as the message, this field is zero.
+ * Longer than the message, this field contains the number of
+ * bytes remaining in the buffer.
+ * Shorter than the message, this field contains the residual
+ * count (that is, the number of bytes remaining in the
+ * message that does not fit into the buffer. In this case
+ * b2f0_result = 5.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer address is NULL
+ */
+int
+iucv_receive_array (__u16 pathid,
+ __u32 msgid, __u32 trgcls,
+ iucv_array_t * buffer, ulong buflen,
+ int *flags1_out,
+ ulong * residual_buffer, ulong * residual_length)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+ int i = 0, moved = 0, need_to_move = 8, dyn_len;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ipbfadr1 = (__u32) ((ulong) buffer);
+ parm->ipbfln1f = (__u32) buflen;
+ parm->ipmsgid = msgid;
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipflags1 = (IPBUFLST | IPFGPID | IPFGMID | IPFGMCL);
+
+ b2f0_result = b2f0(RECEIVE, parm);
+
+ if (!b2f0_result || b2f0_result == 5) {
+
+ if (flags1_out) {
+ iucv_debug(2, "*flags1_out = %d", *flags1_out);
+ *flags1_out = (parm->ipflags1 & (~0x07));
+ iucv_debug(2, "*flags1_out = %d", *flags1_out);
+ }
+
+ if (!(parm->ipflags1 & IPRMDATA)) { /*msg not in parmlist */
+
+ if (residual_length)
+ *residual_length = parm->ipbfln1f;
+
+ if (residual_buffer)
+ *residual_buffer = parm->ipbfadr1;
+
+ } else {
+ /* copy msg from parmlist to users array. */
+
+ while ((moved < 8) && (moved < buflen)) {
+ dyn_len =
+ min_t (unsigned int,
+ (buffer + i)->length, need_to_move);
+
+ memcpy ((char *)((ulong)((buffer + i)->address)),
+ ((char *) &parm->ipbfadr1) + moved,
+ dyn_len);
+
+ moved += dyn_len;
+ need_to_move -= dyn_len;
+
+ (buffer + i)->address =
+ (__u32)
+ ((ulong)(__u8 *) ((ulong)(buffer + i)->address)
+ + dyn_len);
+
+ (buffer + i)->length -= dyn_len;
+ i++;
+ }
+
+ if (need_to_move) /* buflen < 8 bytes */
+ b2f0_result = 5;
+
+ if (residual_length)
+ *residual_length = abs (buflen - 8);
+
+ if (residual_buffer) {
+ if (!moved)
+ *residual_buffer = (ulong) buffer;
+ else
+ *residual_buffer =
+ (ulong) (buffer + (i - 1));
+ }
+
+ }
+ }
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+ return b2f0_result;
+}
+
+/**
+ * iucv_reject:
+ * @pathid: Path identification number.
+ * @msgid: Message ID of the message to reject.
+ * @trgcls: Target class of the message to reject.
+ * Returns: return code from CP
+ *
+ * Refuses a specified message. Between the time you are notified of a
+ * message and the time that you complete the message, the message may
+ * be rejected.
+ */
+int
+iucv_reject (__u16 pathid, __u32 msgid, __u32 trgcls)
+{
+ iparml_db *parm;
+ ulong b2f0_result = 0;
+
+ iucv_debug(1, "entering");
+ iucv_debug(1, "pathid = %d", pathid);
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->ipmsgid = msgid;
+ parm->iptrgcls = trgcls;
+ parm->ipflags1 = (IPFGMCL | IPFGMID | IPFGPID);
+
+ b2f0_result = b2f0(REJECT, parm);
+ release_param(parm);
+
+ iucv_debug(1, "b2f0_result = %ld", b2f0_result);
+ iucv_debug(1, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_reply
+ * Purpose: This function responds to the two-way messages that you
+ * receive. You must identify completely the message to
+ * which you wish to reply. ie, pathid, msgid, and trgcls.
+ * Input: pathid - path identification number
+ * msgid - specifies the message ID.
+ * trgcls - specifies target class
+ * flags1 - option for path
+ * IPPRTY- 0x20 - specifies if you want to send priority message
+ * buffer - address of reply buffer
+ * buflen - length of reply buffer
+ * Output: ipbfadr2 - Address of buffer updated by the number
+ * of bytes you have moved.
+ * ipbfln2f - Contains one of the following values:
+ * If the answer buffer is the same length as the reply, this field
+ * contains zero.
+ * If the answer buffer is longer than the reply, this field contains
+ * the number of bytes remaining in the buffer.
+ * If the answer buffer is shorter than the reply, this field contains
+ * a residual count (that is, the number of bytes remianing in the
+ * reply that does not fit into the buffer. In this
+ * case b2f0_result = 5.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer address is NULL
+ */
+int
+iucv_reply (__u16 pathid,
+ __u32 msgid, __u32 trgcls,
+ int flags1,
+ void *buffer, ulong buflen, ulong * ipbfadr2, ulong * ipbfln2f)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ipbfadr2 = (__u32) ((ulong) buffer);
+ parm->ipbfln2f = (__u32) buflen; /* length of message */
+ parm->ippathid = pathid;
+ parm->ipmsgid = msgid;
+ parm->iptrgcls = trgcls;
+ parm->ipflags1 = (__u8) flags1; /* priority message */
+
+ b2f0_result = b2f0(REPLY, parm);
+
+ if ((!b2f0_result) || (b2f0_result == 5)) {
+ if (ipbfadr2)
+ *ipbfadr2 = parm->ipbfadr2;
+ if (ipbfln2f)
+ *ipbfln2f = parm->ipbfln2f;
+ }
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_reply_array
+ * Purpose: This function responds to the two-way messages that you
+ * receive. You must identify completely the message to
+ * which you wish to reply. ie, pathid, msgid, and trgcls.
+ * The array identifies a list of addresses and lengths of
+ * discontiguous buffers that contains the reply data.
+ * Input: pathid - path identification number
+ * msgid - specifies the message ID.
+ * trgcls - specifies target class
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * buffer - address of array of reply buffers
+ * buflen - total length of reply buffers
+ * Output: ipbfadr2 - Address of buffer which IUCV is currently working on.
+ * ipbfln2f - Contains one of the following values:
+ * If the answer buffer is the same length as the reply, this field
+ * contains zero.
+ * If the answer buffer is longer than the reply, this field contains
+ * the number of bytes remaining in the buffer.
+ * If the answer buffer is shorter than the reply, this field contains
+ * a residual count (that is, the number of bytes remianing in the
+ * reply that does not fit into the buffer. In this
+ * case b2f0_result = 5.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer address is NULL
+*/
+int
+iucv_reply_array (__u16 pathid,
+ __u32 msgid, __u32 trgcls,
+ int flags1,
+ iucv_array_t * buffer,
+ ulong buflen, ulong * ipbfadr2, ulong * ipbfln2f)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ipbfadr2 = (__u32) ((ulong) buffer);
+ parm->ipbfln2f = buflen; /* length of message */
+ parm->ippathid = pathid;
+ parm->ipmsgid = msgid;
+ parm->iptrgcls = trgcls;
+ parm->ipflags1 = (IPANSLST | flags1);
+
+ b2f0_result = b2f0(REPLY, parm);
+
+ if ((!b2f0_result) || (b2f0_result == 5)) {
+
+ if (ipbfadr2)
+ *ipbfadr2 = parm->ipbfadr2;
+ if (ipbfln2f)
+ *ipbfln2f = parm->ipbfln2f;
+ }
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_reply_prmmsg
+ * Purpose: This function responds to the two-way messages that you
+ * receive. You must identify completely the message to
+ * which you wish to reply. ie, pathid, msgid, and trgcls.
+ * Prmmsg signifies the data is moved into the
+ * parameter list.
+ * Input: pathid - path identification number
+ * msgid - specifies the message ID.
+ * trgcls - specifies target class
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * prmmsg - 8-bytes of data to be placed into the parameter
+ * list.
+ * Output: NA
+ * Return: b2f0_result - return code from CP
+*/
+int
+iucv_reply_prmmsg (__u16 pathid,
+ __u32 msgid, __u32 trgcls, int flags1, __u8 prmmsg[8])
+{
+ iparml_dpl *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ parm = (iparml_dpl *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->ipmsgid = msgid;
+ parm->iptrgcls = trgcls;
+ memcpy(parm->iprmmsg, prmmsg, sizeof (parm->iprmmsg));
+ parm->ipflags1 = (IPRMDATA | flags1);
+
+ b2f0_result = b2f0(REPLY, parm);
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/**
+ * iucv_resume:
+ * @pathid: Path identification number
+ * @user_data: 16-byte of user data
+ *
+ * This function restores communication over a quiesced path.
+ * Returns: return code from CP
+ */
+int
+iucv_resume (__u16 pathid, __u8 user_data[16])
+{
+ iparml_control *parm;
+ ulong b2f0_result = 0;
+
+ iucv_debug(1, "entering");
+ iucv_debug(1, "pathid = %d", pathid);
+
+ parm = (iparml_control *)grab_param();
+
+ memcpy (parm->ipuser, user_data, sizeof (*user_data));
+ parm->ippathid = pathid;
+
+ b2f0_result = b2f0(RESUME, parm);
+ release_param(parm);
+
+ iucv_debug(1, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send
+ * Purpose: sends messages
+ * Input: pathid - ushort, pathid
+ * msgid - ulong *, id of message returned to caller
+ * trgcls - ulong, target message class
+ * srccls - ulong, source message class
+ * msgtag - ulong, message tag
+ * flags1 - Contains options for this path.
+ * IPPRTY - Ox20 - specifies if you want to send a priority message.
+ * buffer - pointer to buffer
+ * buflen - ulong, length of buffer
+ * Output: b2f0_result - return code from b2f0 call
+ * msgid - returns message id
+ */
+int
+iucv_send (__u16 pathid, __u32 * msgid,
+ __u32 trgcls, __u32 srccls,
+ __u32 msgtag, int flags1, void *buffer, ulong buflen)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ipbfadr1 = (__u32) ((ulong) buffer);
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipbfln1f = (__u32) buflen; /* length of message */
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipflags1 = (IPNORPY | flags1); /* one way priority message */
+
+ b2f0_result = b2f0(SEND, parm);
+
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send_array
+ * Purpose: This function transmits data to another application.
+ * The contents of buffer is the address of the array of
+ * addresses and lengths of discontiguous buffers that hold
+ * the message text. This is a one-way message and the
+ * receiver will not reply to the message.
+ * Input: pathid - path identification number
+ * trgcls - specifies target class
+ * srccls - specifies the source message class
+ * msgtag - specifies a tag to be associated witht the message
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * buffer - address of array of send buffers
+ * buflen - total length of send buffers
+ * Output: msgid - specifies the message ID.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer address is NULL
+ */
+int
+iucv_send_array (__u16 pathid,
+ __u32 * msgid,
+ __u32 trgcls,
+ __u32 srccls,
+ __u32 msgtag, int flags1, iucv_array_t * buffer, ulong buflen)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipbfadr1 = (__u32) ((ulong) buffer);
+ parm->ipbfln1f = (__u32) buflen; /* length of message */
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipflags1 = (IPNORPY | IPBUFLST | flags1);
+ b2f0_result = b2f0(SEND, parm);
+
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send_prmmsg
+ * Purpose: This function transmits data to another application.
+ * Prmmsg specifies that the 8-bytes of data are to be moved
+ * into the parameter list. This is a one-way message and the
+ * receiver will not reply to the message.
+ * Input: pathid - path identification number
+ * trgcls - specifies target class
+ * srccls - specifies the source message class
+ * msgtag - specifies a tag to be associated with the message
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * prmmsg - 8-bytes of data to be placed into parameter list
+ * Output: msgid - specifies the message ID.
+ * Return: b2f0_result - return code from CP
+*/
+int
+iucv_send_prmmsg (__u16 pathid,
+ __u32 * msgid,
+ __u32 trgcls,
+ __u32 srccls, __u32 msgtag, int flags1, __u8 prmmsg[8])
+{
+ iparml_dpl *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ parm = (iparml_dpl *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipflags1 = (IPRMDATA | IPNORPY | flags1);
+ memcpy(parm->iprmmsg, prmmsg, sizeof(parm->iprmmsg));
+
+ b2f0_result = b2f0(SEND, parm);
+
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send2way
+ * Purpose: This function transmits data to another application.
+ * Data to be transmitted is in a buffer. The receiver
+ * of the send is expected to reply to the message and
+ * a buffer is provided into which IUCV moves the reply
+ * to this message.
+ * Input: pathid - path identification number
+ * trgcls - specifies target class
+ * srccls - specifies the source message class
+ * msgtag - specifies a tag associated with the message
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * buffer - address of send buffer
+ * buflen - length of send buffer
+ * ansbuf - address of buffer to reply with
+ * anslen - length of buffer to reply with
+ * Output: msgid - specifies the message ID.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer or ansbuf address is NULL
+ */
+int
+iucv_send2way (__u16 pathid,
+ __u32 * msgid,
+ __u32 trgcls,
+ __u32 srccls,
+ __u32 msgtag,
+ int flags1,
+ void *buffer, ulong buflen, void *ansbuf, ulong anslen)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer || !ansbuf)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipbfadr1 = (__u32) ((ulong) buffer);
+ parm->ipbfln1f = (__u32) buflen; /* length of message */
+ parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
+ parm->ipbfln2f = (__u32) anslen;
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipflags1 = flags1; /* priority message */
+
+ b2f0_result = b2f0(SEND, parm);
+
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send2way_array
+ * Purpose: This function transmits data to another application.
+ * The contents of buffer is the address of the array of
+ * addresses and lengths of discontiguous buffers that hold
+ * the message text. The receiver of the send is expected to
+ * reply to the message and a buffer is provided into which
+ * IUCV moves the reply to this message.
+ * Input: pathid - path identification number
+ * trgcls - specifies target class
+ * srccls - specifies the source message class
+ * msgtag - spcifies a tag to be associated with the message
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * buffer - address of array of send buffers
+ * buflen - total length of send buffers
+ * ansbuf - address of buffer to reply with
+ * anslen - length of buffer to reply with
+ * Output: msgid - specifies the message ID.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer address is NULL
+ */
+int
+iucv_send2way_array (__u16 pathid,
+ __u32 * msgid,
+ __u32 trgcls,
+ __u32 srccls,
+ __u32 msgtag,
+ int flags1,
+ iucv_array_t * buffer,
+ ulong buflen, iucv_array_t * ansbuf, ulong anslen)
+{
+ iparml_db *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!buffer || !ansbuf)
+ return -EINVAL;
+
+ parm = (iparml_db *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipbfadr1 = (__u32) ((ulong) buffer);
+ parm->ipbfln1f = (__u32) buflen; /* length of message */
+ parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
+ parm->ipbfln2f = (__u32) anslen;
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipflags1 = (IPBUFLST | IPANSLST | flags1);
+ b2f0_result = b2f0(SEND, parm);
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send2way_prmmsg
+ * Purpose: This function transmits data to another application.
+ * Prmmsg specifies that the 8-bytes of data are to be moved
+ * into the parameter list. This is a two-way message and the
+ * receiver of the message is expected to reply. A buffer
+ * is provided into which IUCV moves the reply to this
+ * message.
+ * Input: pathid - path identification number
+ * trgcls - specifies target class
+ * srccls - specifies the source message class
+ * msgtag - specifies a tag to be associated with the message
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * prmmsg - 8-bytes of data to be placed in parameter list
+ * ansbuf - address of buffer to reply with
+ * anslen - length of buffer to reply with
+ * Output: msgid - specifies the message ID.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - buffer address is NULL
+*/
+int
+iucv_send2way_prmmsg (__u16 pathid,
+ __u32 * msgid,
+ __u32 trgcls,
+ __u32 srccls,
+ __u32 msgtag,
+ ulong flags1, __u8 prmmsg[8], void *ansbuf, ulong anslen)
+{
+ iparml_dpl *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!ansbuf)
+ return -EINVAL;
+
+ parm = (iparml_dpl *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
+ parm->ipbfln2f = (__u32) anslen;
+ parm->ipflags1 = (IPRMDATA | flags1); /* message in prmlist */
+ memcpy(parm->iprmmsg, prmmsg, sizeof(parm->iprmmsg));
+
+ b2f0_result = b2f0(SEND, parm);
+
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+
+ return b2f0_result;
+}
+
+/*
+ * Name: iucv_send2way_prmmsg_array
+ * Purpose: This function transmits data to another application.
+ * Prmmsg specifies that the 8-bytes of data are to be moved
+ * into the parameter list. This is a two-way message and the
+ * receiver of the message is expected to reply. A buffer
+ * is provided into which IUCV moves the reply to this
+ * message. The contents of ansbuf is the address of the
+ * array of addresses and lengths of discontiguous buffers
+ * that contain the reply.
+ * Input: pathid - path identification number
+ * trgcls - specifies target class
+ * srccls - specifies the source message class
+ * msgtag - specifies a tag to be associated with the message
+ * flags1 - option for path
+ * IPPRTY- specifies if you want to send priority message
+ * prmmsg - 8-bytes of data to be placed into the parameter list
+ * ansbuf - address of buffer to reply with
+ * anslen - length of buffer to reply with
+ * Output: msgid - specifies the message ID.
+ * Return: b2f0_result - return code from CP
+ * (-EINVAL) - ansbuf address is NULL
+ */
+int
+iucv_send2way_prmmsg_array (__u16 pathid,
+ __u32 * msgid,
+ __u32 trgcls,
+ __u32 srccls,
+ __u32 msgtag,
+ int flags1,
+ __u8 prmmsg[8],
+ iucv_array_t * ansbuf, ulong anslen)
+{
+ iparml_dpl *parm;
+ ulong b2f0_result;
+
+ iucv_debug(2, "entering");
+
+ if (!ansbuf)
+ return -EINVAL;
+
+ parm = (iparml_dpl *)grab_param();
+
+ parm->ippathid = pathid;
+ parm->iptrgcls = trgcls;
+ parm->ipsrccls = srccls;
+ parm->ipmsgtag = msgtag;
+ parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
+ parm->ipbfln2f = (__u32) anslen;
+ parm->ipflags1 = (IPRMDATA | IPANSLST | flags1);
+ memcpy(parm->iprmmsg, prmmsg, sizeof(parm->iprmmsg));
+ b2f0_result = b2f0(SEND, parm);
+ if ((!b2f0_result) && (msgid))
+ *msgid = parm->ipmsgid;
+ release_param(parm);
+
+ iucv_debug(2, "exiting");
+ return b2f0_result;
+}
+
+void
+iucv_setmask_cpuid (void *result)
+{
+ iparml_set_mask *parm;
+
+ iucv_debug(1, "entering");
+ parm = (iparml_set_mask *)grab_param();
+ parm->ipmask = *((__u8*)result);
+ *((ulong *)result) = b2f0(SETMASK, parm);
+ release_param(parm);
+
+ iucv_debug(1, "b2f0_result = %ld", *((ulong *)result));
+ iucv_debug(1, "exiting");
+}
+
+/*
+ * Name: iucv_setmask
+ * Purpose: This function enables or disables the following IUCV
+ * external interruptions: Nonpriority and priority message
+ * interrupts, nonpriority and priority reply interrupts.
+ * Input: SetMaskFlag - options for interrupts
+ * 0x80 - Nonpriority_MessagePendingInterruptsFlag
+ * 0x40 - Priority_MessagePendingInterruptsFlag
+ * 0x20 - Nonpriority_MessageCompletionInterruptsFlag
+ * 0x10 - Priority_MessageCompletionInterruptsFlag
+ * 0x08 - IUCVControlInterruptsFlag
+ * Output: NA
+ * Return: b2f0_result - return code from CP
+*/
+int
+iucv_setmask (int SetMaskFlag)
+{
+ union {
+ ulong result;
+ __u8 param;
+ } u;
+ int cpu;
+
+ u.param = SetMaskFlag;
+ cpu = get_cpu();
+ smp_call_function_on(iucv_setmask_cpuid, &u, 0, 1, iucv_cpuid);
+ put_cpu();
+
+ return u.result;
+}
+
+/**
+ * iucv_sever:
+ * @pathid: Path identification number
+ * @user_data: 16-byte of user data
+ *
+ * This function terminates an iucv path.
+ * Returns: return code from CP
+ */
+int
+iucv_sever(__u16 pathid, __u8 user_data[16])
+{
+ iparml_control *parm;
+ ulong b2f0_result = 0;
+
+ iucv_debug(1, "entering");
+ parm = (iparml_control *)grab_param();
+
+ memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
+ parm->ippathid = pathid;
+
+ b2f0_result = b2f0(SEVER, parm);
+
+ if (!b2f0_result)
+ iucv_remove_pathid(pathid);
+ release_param(parm);
+
+ iucv_debug(1, "exiting");
+ return b2f0_result;
+}
+
+/*
+ * Interrupt Handlers
+ *******************************************************************************/
+
+/**
+ * iucv_irq_handler:
+ * @regs: Current registers
+ * @code: irq code
+ *
+ * Handles external interrupts coming in from CP.
+ * Places the interrupt buffer on a queue and schedules iucv_tasklet_handler().
+ */
+static void
+iucv_irq_handler(struct pt_regs *regs, __u16 code)
+{
+ iucv_irqdata *irqdata;
+
+ irqdata = kmalloc(sizeof(iucv_irqdata), GFP_ATOMIC);
+ if (!irqdata) {
+ printk(KERN_WARNING "%s: out of memory\n", __FUNCTION__);
+ return;
+ }
+
+ memcpy(&irqdata->data, iucv_external_int_buffer,
+ sizeof(iucv_GeneralInterrupt));
+
+ spin_lock(&iucv_irq_queue_lock);
+ list_add_tail(&irqdata->queue, &iucv_irq_queue);
+ spin_unlock(&iucv_irq_queue_lock);
+
+ tasklet_schedule(&iucv_tasklet);
+}
+
+/**
+ * iucv_do_int:
+ * @int_buf: Pointer to copy of external interrupt buffer
+ *
+ * The workhorse for handling interrupts queued by iucv_irq_handler().
+ * This function is called from the bottom half iucv_tasklet_handler().
+ */
+static void
+iucv_do_int(iucv_GeneralInterrupt * int_buf)
+{
+ handler *h = NULL;
+ struct list_head *lh;
+ ulong flags;
+ iucv_interrupt_ops_t *interrupt = NULL; /* interrupt addresses */
+ __u8 temp_buff1[24], temp_buff2[24]; /* masked handler id. */
+ int rc = 0, j = 0;
+ __u8 no_listener[16] = "NO LISTENER";
+
+ iucv_debug(2, "entering, pathid %d, type %02X",
+ int_buf->ippathid, int_buf->iptype);
+ iucv_dumpit("External Interrupt Buffer:",
+ int_buf, sizeof(iucv_GeneralInterrupt));
+
+ ASCEBC (no_listener, 16);
+
+ if (int_buf->iptype != 01) {
+ if ((int_buf->ippathid) > (max_connections - 1)) {
+ printk(KERN_WARNING "%s: Got interrupt with pathid %d"
+ " > max_connections (%ld)\n", __FUNCTION__,
+ int_buf->ippathid, max_connections - 1);
+ } else {
+ h = iucv_pathid_table[int_buf->ippathid];
+ interrupt = h->interrupt_table;
+ iucv_dumpit("Handler:", h, sizeof(handler));
+ }
+ }
+
+ /* end of if statement */
+ switch (int_buf->iptype) {
+ case 0x01: /* connection pending */
+ if (messagesDisabled) {
+ iucv_setmask(~0);
+ messagesDisabled = 0;
+ }
+ spin_lock_irqsave(&iucv_lock, flags);
+ list_for_each(lh, &iucv_handler_table) {
+ h = list_entry(lh, handler, list);
+ memcpy(temp_buff1, &(int_buf->ipvmid), 24);
+ memcpy(temp_buff2, &(h->id.userid), 24);
+ for (j = 0; j < 24; j++) {
+ temp_buff1[j] &= (h->id.mask)[j];
+ temp_buff2[j] &= (h->id.mask)[j];
+ }
+
+ iucv_dumpit("temp_buff1:",
+ temp_buff1, sizeof(temp_buff1));
+ iucv_dumpit("temp_buff2",
+ temp_buff2, sizeof(temp_buff2));
+
+ if (!memcmp (temp_buff1, temp_buff2, 24)) {
+
+ iucv_debug(2,
+ "found a matching handler");
+ break;
+ } else
+ h = NULL;
+ }
+ spin_unlock_irqrestore (&iucv_lock, flags);
+ if (h) {
+ /* ADD PATH TO PATHID TABLE */
+ rc = iucv_add_pathid(int_buf->ippathid, h);
+ if (rc) {
+ iucv_sever (int_buf->ippathid,
+ no_listener);
+ iucv_debug(1,
+ "add_pathid failed, rc = %d",
+ rc);
+ } else {
+ interrupt = h->interrupt_table;
+ if (interrupt->ConnectionPending) {
+ EBCASC (int_buf->ipvmid, 8);
+ interrupt->ConnectionPending(
+ (iucv_ConnectionPending *)int_buf,
+ h->pgm_data);
+ } else
+ iucv_sever(int_buf->ippathid,
+ no_listener);
+ }
+ } else
+ iucv_sever(int_buf->ippathid, no_listener);
+ break;
+
+ case 0x02: /*connection complete */
+ if (messagesDisabled) {
+ iucv_setmask(~0);
+ messagesDisabled = 0;
+ }
+ if (h) {
+ if (interrupt->ConnectionComplete)
+ {
+ interrupt->ConnectionComplete(
+ (iucv_ConnectionComplete *)int_buf,
+ h->pgm_data);
+ }
+ else
+ iucv_debug(1,
+ "ConnectionComplete not called");
+ } else
+ iucv_sever(int_buf->ippathid, no_listener);
+ break;
+
+ case 0x03: /* connection severed */
+ if (messagesDisabled) {
+ iucv_setmask(~0);
+ messagesDisabled = 0;
+ }
+ if (h) {
+ if (interrupt->ConnectionSevered)
+ interrupt->ConnectionSevered(
+ (iucv_ConnectionSevered *)int_buf,
+ h->pgm_data);
+
+ else
+ iucv_sever (int_buf->ippathid, no_listener);
+ } else
+ iucv_sever(int_buf->ippathid, no_listener);
+ break;
+
+ case 0x04: /* connection quiesced */
+ if (messagesDisabled) {
+ iucv_setmask(~0);
+ messagesDisabled = 0;
+ }
+ if (h) {
+ if (interrupt->ConnectionQuiesced)
+ interrupt->ConnectionQuiesced(
+ (iucv_ConnectionQuiesced *)int_buf,
+ h->pgm_data);
+ else
+ iucv_debug(1,
+ "ConnectionQuiesced not called");
+ }
+ break;
+
+ case 0x05: /* connection resumed */
+ if (messagesDisabled) {
+ iucv_setmask(~0);
+ messagesDisabled = 0;
+ }
+ if (h) {
+ if (interrupt->ConnectionResumed)
+ interrupt->ConnectionResumed(
+ (iucv_ConnectionResumed *)int_buf,
+ h->pgm_data);
+ else
+ iucv_debug(1,
+ "ConnectionResumed not called");
+ }
+ break;
+
+ case 0x06: /* priority message complete */
+ case 0x07: /* nonpriority message complete */
+ if (h) {
+ if (interrupt->MessageComplete)
+ interrupt->MessageComplete(
+ (iucv_MessageComplete *)int_buf,
+ h->pgm_data);
+ else
+ iucv_debug(2,
+ "MessageComplete not called");
+ }
+ break;
+
+ case 0x08: /* priority message pending */
+ case 0x09: /* nonpriority message pending */
+ if (h) {
+ if (interrupt->MessagePending)
+ interrupt->MessagePending(
+ (iucv_MessagePending *) int_buf,
+ h->pgm_data);
+ else
+ iucv_debug(2,
+ "MessagePending not called");
+ }
+ break;
+ default: /* unknown iucv type */
+ printk(KERN_WARNING "%s: unknown iucv interrupt\n",
+ __FUNCTION__);
+ break;
+ } /* end switch */
+
+ iucv_debug(2, "exiting pathid %d, type %02X",
+ int_buf->ippathid, int_buf->iptype);
+
+ return;
+}
+
+/**
+ * iucv_tasklet_handler:
+ *
+ * This function loops over the queue of irq buffers and runs iucv_do_int()
+ * on every queue element.
+ */
+static void
+iucv_tasklet_handler(unsigned long ignored)
+{
+ struct list_head head;
+ struct list_head *next;
+ ulong flags;
+
+ spin_lock_irqsave(&iucv_irq_queue_lock, flags);
+ list_add(&head, &iucv_irq_queue);
+ list_del_init(&iucv_irq_queue);
+ spin_unlock_irqrestore (&iucv_irq_queue_lock, flags);
+
+ next = head.next;
+ while (next != &head) {
+ iucv_irqdata *p = list_entry(next, iucv_irqdata, queue);
+
+ next = next->next;
+ iucv_do_int(&p->data);
+ kfree(p);
+ }
+
+ return;
+}
+
+subsys_initcall(iucv_init);
+module_exit(iucv_exit);
+
+/**
+ * Export all public stuff
+ */
+EXPORT_SYMBOL (iucv_bus);
+EXPORT_SYMBOL (iucv_root);
+EXPORT_SYMBOL (iucv_accept);
+EXPORT_SYMBOL (iucv_connect);
+#if 0
+EXPORT_SYMBOL (iucv_purge);
+EXPORT_SYMBOL (iucv_query_maxconn);
+EXPORT_SYMBOL (iucv_query_bufsize);
+EXPORT_SYMBOL (iucv_quiesce);
+#endif
+EXPORT_SYMBOL (iucv_receive);
+#if 0
+EXPORT_SYMBOL (iucv_receive_array);
+#endif
+EXPORT_SYMBOL (iucv_reject);
+#if 0
+EXPORT_SYMBOL (iucv_reply);
+EXPORT_SYMBOL (iucv_reply_array);
+EXPORT_SYMBOL (iucv_resume);
+#endif
+EXPORT_SYMBOL (iucv_reply_prmmsg);
+EXPORT_SYMBOL (iucv_send);
+#if 0
+EXPORT_SYMBOL (iucv_send2way);
+EXPORT_SYMBOL (iucv_send2way_array);
+EXPORT_SYMBOL (iucv_send_array);
+EXPORT_SYMBOL (iucv_send2way_prmmsg);
+EXPORT_SYMBOL (iucv_send2way_prmmsg_array);
+EXPORT_SYMBOL (iucv_send_prmmsg);
+EXPORT_SYMBOL (iucv_setmask);
+#endif
+EXPORT_SYMBOL (iucv_sever);
+EXPORT_SYMBOL (iucv_register_program);
+EXPORT_SYMBOL (iucv_unregister_program);
diff --git a/drivers/s390/net/iucv.h b/drivers/s390/net/iucv.h
new file mode 100644
index 0000000..1983302
--- /dev/null
+++ b/drivers/s390/net/iucv.h
@@ -0,0 +1,849 @@
+/*
+ * drivers/s390/net/iucv.h
+ * IUCV base support.
+ *
+ * S390 version
+ * Copyright (C) 2000 IBM Corporation
+ * Author(s):Alan Altmark (Alan_Altmark@us.ibm.com)
+ * Xenia Tkatschow (xenia@us.ibm.com)
+ *
+ *
+ * Functionality:
+ * To explore any of the IUCV functions, one must first register
+ * their program using iucv_register_program(). Once your program has
+ * successfully completed a register, it can exploit the other functions.
+ * For furthur reference on all IUCV functionality, refer to the
+ * CP Programming Services book, also available on the web
+ * thru www.ibm.com/s390/vm/pubs, manual # SC24-5760
+ *
+ * Definition of Return Codes
+ * -All positive return codes including zero are reflected back
+ * from CP except for iucv_register_program. The definition of each
+ * return code can be found in CP Programming Services book.
+ * Also available on the web thru www.ibm.com/s390/vm/pubs, manual # SC24-5760
+ * - Return Code of:
+ * (-EINVAL) Invalid value
+ * (-ENOMEM) storage allocation failed
+ * pgmask defined in iucv_register_program will be set depending on input
+ * paramters.
+ *
+ */
+
+#include <linux/types.h>
+#include <asm/debug.h>
+
+/**
+ * Debug Facility stuff
+ */
+#define IUCV_DBF_SETUP_NAME "iucv_setup"
+#define IUCV_DBF_SETUP_LEN 32
+#define IUCV_DBF_SETUP_INDEX 1
+#define IUCV_DBF_SETUP_NR_AREAS 1
+#define IUCV_DBF_SETUP_LEVEL 3
+
+#define IUCV_DBF_DATA_NAME "iucv_data"
+#define IUCV_DBF_DATA_LEN 128
+#define IUCV_DBF_DATA_INDEX 1
+#define IUCV_DBF_DATA_NR_AREAS 1
+#define IUCV_DBF_DATA_LEVEL 2
+
+#define IUCV_DBF_TRACE_NAME "iucv_trace"
+#define IUCV_DBF_TRACE_LEN 16
+#define IUCV_DBF_TRACE_INDEX 2
+#define IUCV_DBF_TRACE_NR_AREAS 1
+#define IUCV_DBF_TRACE_LEVEL 3
+
+#define IUCV_DBF_TEXT(name,level,text) \
+ do { \
+ debug_text_event(iucv_dbf_##name,level,text); \
+ } while (0)
+
+#define IUCV_DBF_HEX(name,level,addr,len) \
+ do { \
+ debug_event(iucv_dbf_##name,level,(void*)(addr),len); \
+ } while (0)
+
+DECLARE_PER_CPU(char[256], iucv_dbf_txt_buf);
+
+#define IUCV_DBF_TEXT_(name,level,text...) \
+ do { \
+ char* iucv_dbf_txt_buf = get_cpu_var(iucv_dbf_txt_buf); \
+ sprintf(iucv_dbf_txt_buf, text); \
+ debug_text_event(iucv_dbf_##name,level,iucv_dbf_txt_buf); \
+ put_cpu_var(iucv_dbf_txt_buf); \
+ } while (0)
+
+#define IUCV_DBF_SPRINTF(name,level,text...) \
+ do { \
+ debug_sprintf_event(iucv_dbf_trace, level, ##text ); \
+ debug_sprintf_event(iucv_dbf_trace, level, text ); \
+ } while (0)
+
+/**
+ * some more debug stuff
+ */
+#define IUCV_HEXDUMP16(importance,header,ptr) \
+PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
+ *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
+ *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
+ *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
+ *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
+ *(((char*)ptr)+12),*(((char*)ptr)+13), \
+ *(((char*)ptr)+14),*(((char*)ptr)+15)); \
+PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
+ *(((char*)ptr)+16),*(((char*)ptr)+17), \
+ *(((char*)ptr)+18),*(((char*)ptr)+19), \
+ *(((char*)ptr)+20),*(((char*)ptr)+21), \
+ *(((char*)ptr)+22),*(((char*)ptr)+23), \
+ *(((char*)ptr)+24),*(((char*)ptr)+25), \
+ *(((char*)ptr)+26),*(((char*)ptr)+27), \
+ *(((char*)ptr)+28),*(((char*)ptr)+29), \
+ *(((char*)ptr)+30),*(((char*)ptr)+31));
+
+static inline void
+iucv_hex_dump(unsigned char *buf, size_t len)
+{
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ if (i && !(i % 16))
+ printk("\n");
+ printk("%02x ", *(buf + i));
+ }
+ printk("\n");
+}
+/**
+ * end of debug stuff
+ */
+
+#define uchar unsigned char
+#define ushort unsigned short
+#define ulong unsigned long
+#define iucv_handle_t void *
+
+/* flags1:
+ * All flags are defined in the field IPFLAGS1 of each function
+ * and can be found in CP Programming Services.
+ * IPLOCAL - Indicates the connect can only be satisfied on the
+ * local system
+ * IPPRTY - Indicates a priority message
+ * IPQUSCE - Indicates you do not want to receive messages on a
+ * path until an iucv_resume is issued
+ * IPRMDATA - Indicates that the message is in the parameter list
+ */
+#define IPLOCAL 0x01
+#define IPPRTY 0x20
+#define IPQUSCE 0x40
+#define IPRMDATA 0x80
+
+/* flags1_out:
+ * All flags are defined in the output field of IPFLAGS1 for each function
+ * and can be found in CP Programming Services.
+ * IPNORPY - Specifies this is a one-way message and no reply is expected.
+ * IPPRTY - Indicates a priority message is permitted. Defined in flags1.
+ */
+#define IPNORPY 0x10
+
+#define Nonpriority_MessagePendingInterruptsFlag 0x80
+#define Priority_MessagePendingInterruptsFlag 0x40
+#define Nonpriority_MessageCompletionInterruptsFlag 0x20
+#define Priority_MessageCompletionInterruptsFlag 0x10
+#define IUCVControlInterruptsFlag 0x08
+#define AllInterrupts 0xf8
+/*
+ * Mapping of external interrupt buffers should be used with the corresponding
+ * interrupt types.
+ * Names: iucv_ConnectionPending -> connection pending
+ * iucv_ConnectionComplete -> connection complete
+ * iucv_ConnectionSevered -> connection severed
+ * iucv_ConnectionQuiesced -> connection quiesced
+ * iucv_ConnectionResumed -> connection resumed
+ * iucv_MessagePending -> message pending
+ * iucv_MessageComplete -> message complete
+ */
+typedef struct {
+ u16 ippathid;
+ uchar ipflags1;
+ uchar iptype;
+ u16 ipmsglim;
+ u16 res1;
+ uchar ipvmid[8];
+ uchar ipuser[16];
+ u32 res3;
+ uchar ippollfg;
+ uchar res4[3];
+} iucv_ConnectionPending;
+
+typedef struct {
+ u16 ippathid;
+ uchar ipflags1;
+ uchar iptype;
+ u16 ipmsglim;
+ u16 res1;
+ uchar res2[8];
+ uchar ipuser[16];
+ u32 res3;
+ uchar ippollfg;
+ uchar res4[3];
+} iucv_ConnectionComplete;
+
+typedef struct {
+ u16 ippathid;
+ uchar res1;
+ uchar iptype;
+ u32 res2;
+ uchar res3[8];
+ uchar ipuser[16];
+ u32 res4;
+ uchar ippollfg;
+ uchar res5[3];
+} iucv_ConnectionSevered;
+
+typedef struct {
+ u16 ippathid;
+ uchar res1;
+ uchar iptype;
+ u32 res2;
+ uchar res3[8];
+ uchar ipuser[16];
+ u32 res4;
+ uchar ippollfg;
+ uchar res5[3];
+} iucv_ConnectionQuiesced;
+
+typedef struct {
+ u16 ippathid;
+ uchar res1;
+ uchar iptype;
+ u32 res2;
+ uchar res3[8];
+ uchar ipuser[16];
+ u32 res4;
+ uchar ippollfg;
+ uchar res5[3];
+} iucv_ConnectionResumed;
+
+typedef struct {
+ u16 ippathid;
+ uchar ipflags1;
+ uchar iptype;
+ u32 ipmsgid;
+ u32 iptrgcls;
+ union u2 {
+ u32 iprmmsg1_u32;
+ uchar iprmmsg1[4];
+ } ln1msg1;
+ union u1 {
+ u32 ipbfln1f;
+ uchar iprmmsg2[4];
+ } ln1msg2;
+ u32 res1[3];
+ u32 ipbfln2f;
+ uchar ippollfg;
+ uchar res2[3];
+} iucv_MessagePending;
+
+typedef struct {
+ u16 ippathid;
+ uchar ipflags1;
+ uchar iptype;
+ u32 ipmsgid;
+ u32 ipaudit;
+ uchar iprmmsg[8];
+ u32 ipsrccls;
+ u32 ipmsgtag;
+ u32 res;
+ u32 ipbfln2f;
+ uchar ippollfg;
+ uchar res2[3];
+} iucv_MessageComplete;
+
+/*
+ * iucv_interrupt_ops_t: Is a vector of functions that handle
+ * IUCV interrupts.
+ * Parameter list:
+ * eib - is a pointer to a 40-byte area described
+ * with one of the structures above.
+ * pgm_data - this data is strictly for the
+ * interrupt handler that is passed by
+ * the application. This may be an address
+ * or token.
+*/
+typedef struct {
+ void (*ConnectionPending) (iucv_ConnectionPending * eib,
+ void *pgm_data);
+ void (*ConnectionComplete) (iucv_ConnectionComplete * eib,
+ void *pgm_data);
+ void (*ConnectionSevered) (iucv_ConnectionSevered * eib,
+ void *pgm_data);
+ void (*ConnectionQuiesced) (iucv_ConnectionQuiesced * eib,
+ void *pgm_data);
+ void (*ConnectionResumed) (iucv_ConnectionResumed * eib,
+ void *pgm_data);
+ void (*MessagePending) (iucv_MessagePending * eib, void *pgm_data);
+ void (*MessageComplete) (iucv_MessageComplete * eib, void *pgm_data);
+} iucv_interrupt_ops_t;
+
+/*
+ *iucv_array_t : Defines buffer array.
+ * Inside the array may be 31- bit addresses and 31-bit lengths.
+*/
+typedef struct {
+ u32 address;
+ u32 length;
+} iucv_array_t __attribute__ ((aligned (8)));
+
+extern struct bus_type iucv_bus;
+extern struct device *iucv_root;
+
+/* -prototypes- */
+/*
+ * Name: iucv_register_program
+ * Purpose: Registers an application with IUCV
+ * Input: prmname - user identification
+ * userid - machine identification
+ * pgmmask - indicates which bits in the prmname and userid combined will be
+ * used to determine who is given control
+ * ops - address of vector of interrupt handlers
+ * pgm_data- application data passed to interrupt handlers
+ * Output: NA
+ * Return: address of handler
+ * (0) - Error occurred, registration not completed.
+ * NOTE: Exact cause of failure will be recorded in syslog.
+*/
+iucv_handle_t iucv_register_program (uchar pgmname[16],
+ uchar userid[8],
+ uchar pgmmask[24],
+ iucv_interrupt_ops_t * ops,
+ void *pgm_data);
+
+/*
+ * Name: iucv_unregister_program
+ * Purpose: Unregister application with IUCV
+ * Input: address of handler
+ * Output: NA
+ * Return: (0) - Normal return
+ * (-EINVAL) - Internal error, wild pointer
+*/
+int iucv_unregister_program (iucv_handle_t handle);
+
+/*
+ * Name: iucv_accept
+ * Purpose: This function is issued after the user receives a Connection Pending external
+ * interrupt and now wishes to complete the IUCV communication path.
+ * Input: pathid - u16 , Path identification number
+ * msglim_reqstd - u16, The number of outstanding messages requested.
+ * user_data - uchar[16], Data specified by the iucv_connect function.
+ * flags1 - int, Contains options for this path.
+ * -IPPRTY - 0x20- Specifies if you want to send priority message.
+ * -IPRMDATA - 0x80, Specifies whether your program can handle a message
+ * in the parameter list.
+ * -IPQUSCE - 0x40, Specifies whether you want to quiesce the path being
+ * established.
+ * handle - iucv_handle_t, Address of handler.
+ * pgm_data - void *, Application data passed to interrupt handlers.
+ * flags1_out - int * Contains information about the path
+ * - IPPRTY - 0x20, Indicates you may send priority messages.
+ * msglim - *u16, Number of outstanding messages.
+ * Output: return code from CP IUCV call.
+*/
+
+int iucv_accept (u16 pathid,
+ u16 msglim_reqstd,
+ uchar user_data[16],
+ int flags1,
+ iucv_handle_t handle,
+ void *pgm_data, int *flags1_out, u16 * msglim);
+
+/*
+ * Name: iucv_connect
+ * Purpose: This function establishes an IUCV path. Although the connect may complete
+ * successfully, you are not able to use the path until you receive an IUCV
+ * Connection Complete external interrupt.
+ * Input: pathid - u16 *, Path identification number
+ * msglim_reqstd - u16, Number of outstanding messages requested
+ * user_data - uchar[16], 16-byte user data
+ * userid - uchar[8], User identification
+ * system_name - uchar[8], 8-byte identifying the system name
+ * flags1 - int, Contains options for this path.
+ * -IPPRTY - 0x20, Specifies if you want to send priority message.
+ * -IPRMDATA - 0x80, Specifies whether your program can handle a message
+ * in the parameter list.
+ * -IPQUSCE - 0x40, Specifies whether you want to quiesce the path being
+ * established.
+ * -IPLOCAL - 0X01, Allows an application to force the partner to be on
+ * the local system. If local is specified then target class cannot be
+ * specified.
+ * flags1_out - int * Contains information about the path
+ * - IPPRTY - 0x20, Indicates you may send priority messages.
+ * msglim - * u16, Number of outstanding messages
+ * handle - iucv_handle_t, Address of handler
+ * pgm_data - void *, Application data passed to interrupt handlers
+ * Output: return code from CP IUCV call
+ * rc - return code from iucv_declare_buffer
+ * -EINVAL - Invalid handle passed by application
+ * -EINVAL - Pathid address is NULL
+ * add_pathid_result - Return code from internal function add_pathid
+*/
+int
+ iucv_connect (u16 * pathid,
+ u16 msglim_reqstd,
+ uchar user_data[16],
+ uchar userid[8],
+ uchar system_name[8],
+ int flags1,
+ int *flags1_out,
+ u16 * msglim, iucv_handle_t handle, void *pgm_data);
+
+/*
+ * Name: iucv_purge
+ * Purpose: This function cancels a message that you have sent.
+ * Input: pathid - Path identification number.
+ * msgid - Specifies the message ID of the message to be purged.
+ * srccls - Specifies the source message class.
+ * Output: audit - Contains information about asynchronous error
+ * that may have affected the normal completion
+ * of this message.
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_purge (u16 pathid, u32 msgid, u32 srccls, __u32 *audit);
+/*
+ * Name: iucv_query_maxconn
+ * Purpose: This function determines the maximum number of communication paths you
+ * may establish.
+ * Return: maxconn - ulong, Maximum number of connection the virtual machine may
+ * establish.
+*/
+ulong iucv_query_maxconn (void);
+
+/*
+ * Name: iucv_query_bufsize
+ * Purpose: This function determines how large an external interrupt
+ * buffer IUCV requires to store information.
+ * Return: bufsize - ulong, Size of external interrupt buffer.
+ */
+ulong iucv_query_bufsize (void);
+
+/*
+ * Name: iucv_quiesce
+ * Purpose: This function temporarily suspends incoming messages on an
+ * IUCV path. You can later reactivate the path by invoking
+ * the iucv_resume function.
+ * Input: pathid - Path identification number
+ * user_data - 16-bytes of user data
+ * Output: NA
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_quiesce (u16 pathid, uchar user_data[16]);
+
+/*
+ * Name: iucv_receive
+ * Purpose: This function receives messages that are being sent to you
+ * over established paths. Data will be returned in buffer for length of
+ * buflen.
+ * Input:
+ * pathid - Path identification number.
+ * buffer - Address of buffer to receive.
+ * buflen - Length of buffer to receive.
+ * msgid - Specifies the message ID.
+ * trgcls - Specifies target class.
+ * Output:
+ * flags1_out: int *, Contains information about this path.
+ * IPNORPY - 0x10 Specifies this is a one-way message and no reply is
+ * expected.
+ * IPPRTY - 0x20 Specifies if you want to send priority message.
+ * IPRMDATA - 0x80 specifies the data is contained in the parameter list
+ * residual_buffer - address of buffer updated by the number
+ * of bytes you have received.
+ * residual_length -
+ * Contains one of the following values, if the receive buffer is:
+ * The same length as the message, this field is zero.
+ * Longer than the message, this field contains the number of
+ * bytes remaining in the buffer.
+ * Shorter than the message, this field contains the residual
+ * count (that is, the number of bytes remaining in the
+ * message that does not fit into the buffer. In this
+ * case b2f0_result = 5.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - buffer address is pointing to NULL
+*/
+int iucv_receive (u16 pathid,
+ u32 msgid,
+ u32 trgcls,
+ void *buffer,
+ ulong buflen,
+ int *flags1_out,
+ ulong * residual_buffer, ulong * residual_length);
+
+ /*
+ * Name: iucv_receive_array
+ * Purpose: This function receives messages that are being sent to you
+ * over established paths. Data will be returned in first buffer for
+ * length of first buffer.
+ * Input: pathid - Path identification number.
+ * msgid - specifies the message ID.
+ * trgcls - Specifies target class.
+ * buffer - Address of array of buffers.
+ * buflen - Total length of buffers.
+ * Output:
+ * flags1_out: int *, Contains information about this path.
+ * IPNORPY - 0x10 Specifies this is a one-way message and no reply is
+ * expected.
+ * IPPRTY - 0x20 Specifies if you want to send priority message.
+ * IPRMDATA - 0x80 specifies the data is contained in the parameter list
+ * residual_buffer - address points to the current list entry IUCV
+ * is working on.
+ * residual_length -
+ * Contains one of the following values, if the receive buffer is:
+ * The same length as the message, this field is zero.
+ * Longer than the message, this field contains the number of
+ * bytes remaining in the buffer.
+ * Shorter than the message, this field contains the residual
+ * count (that is, the number of bytes remaining in the
+ * message that does not fit into the buffer. In this
+ * case b2f0_result = 5.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+ */
+int iucv_receive_array (u16 pathid,
+ u32 msgid,
+ u32 trgcls,
+ iucv_array_t * buffer,
+ ulong buflen,
+ int *flags1_out,
+ ulong * residual_buffer, ulong * residual_length);
+
+/*
+ * Name: iucv_reject
+ * Purpose: The reject function refuses a specified message. Between the
+ * time you are notified of a message and the time that you
+ * complete the message, the message may be rejected.
+ * Input: pathid - Path identification number.
+ * msgid - Specifies the message ID.
+ * trgcls - Specifies target class.
+ * Output: NA
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_reject (u16 pathid, u32 msgid, u32 trgcls);
+
+/*
+ * Name: iucv_reply
+ * Purpose: This function responds to the two-way messages that you
+ * receive. You must identify completely the message to
+ * which you wish to reply. ie, pathid, msgid, and trgcls.
+ * Input: pathid - Path identification number.
+ * msgid - Specifies the message ID.
+ * trgcls - Specifies target class.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20, Specifies if you want to send priority message.
+ * buffer - Address of reply buffer.
+ * buflen - Length of reply buffer.
+ * Output: residual_buffer - Address of buffer updated by the number
+ * of bytes you have moved.
+ * residual_length - Contains one of the following values:
+ * If the answer buffer is the same length as the reply, this field
+ * contains zero.
+ * If the answer buffer is longer than the reply, this field contains
+ * the number of bytes remaining in the buffer.
+ * If the answer buffer is shorter than the reply, this field contains
+ * a residual count (that is, the number of bytes remianing in the
+ * reply that does not fit into the buffer. In this
+ * case b2f0_result = 5.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+*/
+int iucv_reply (u16 pathid,
+ u32 msgid,
+ u32 trgcls,
+ int flags1,
+ void *buffer, ulong buflen, ulong * residual_buffer,
+ ulong * residual_length);
+
+/*
+ * Name: iucv_reply_array
+ * Purpose: This function responds to the two-way messages that you
+ * receive. You must identify completely the message to
+ * which you wish to reply. ie, pathid, msgid, and trgcls.
+ * The array identifies a list of addresses and lengths of
+ * discontiguous buffers that contains the reply data.
+ * Input: pathid - Path identification number
+ * msgid - Specifies the message ID.
+ * trgcls - Specifies target class.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20, Specifies if you want to send priority message.
+ * buffer - Address of array of reply buffers.
+ * buflen - Total length of reply buffers.
+ * Output: residual_buffer - Address of buffer which IUCV is currently working on.
+ * residual_length - Contains one of the following values:
+ * If the answer buffer is the same length as the reply, this field
+ * contains zero.
+ * If the answer buffer is longer than the reply, this field contains
+ * the number of bytes remaining in the buffer.
+ * If the answer buffer is shorter than the reply, this field contains
+ * a residual count (that is, the number of bytes remianing in the
+ * reply that does not fit into the buffer. In this
+ * case b2f0_result = 5.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+*/
+int iucv_reply_array (u16 pathid,
+ u32 msgid,
+ u32 trgcls,
+ int flags1,
+ iucv_array_t * buffer,
+ ulong buflen, ulong * residual_address,
+ ulong * residual_length);
+
+/*
+ * Name: iucv_reply_prmmsg
+ * Purpose: This function responds to the two-way messages that you
+ * receive. You must identify completely the message to
+ * which you wish to reply. ie, pathid, msgid, and trgcls.
+ * Prmmsg signifies the data is moved into the
+ * parameter list.
+ * Input: pathid - Path identification number.
+ * msgid - Specifies the message ID.
+ * trgcls - Specifies target class.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 Specifies if you want to send priority message.
+ * prmmsg - 8-bytes of data to be placed into the parameter.
+ * list.
+ * Output: NA
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_reply_prmmsg (u16 pathid,
+ u32 msgid, u32 trgcls, int flags1, uchar prmmsg[8]);
+
+/*
+ * Name: iucv_resume
+ * Purpose: This function restores communications over a quiesced path
+ * Input: pathid - Path identification number.
+ * user_data - 16-bytes of user data.
+ * Output: NA
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_resume (u16 pathid, uchar user_data[16]);
+
+/*
+ * Name: iucv_send
+ * Purpose: This function transmits data to another application.
+ * Data to be transmitted is in a buffer and this is a
+ * one-way message and the receiver will not reply to the
+ * message.
+ * Input: pathid - Path identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag to be associated with the message.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 Specifies if you want to send priority message.
+ * buffer - Address of send buffer.
+ * buflen - Length of send buffer.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+*/
+int iucv_send (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls, u32 msgtag, int flags1, void *buffer, ulong buflen);
+
+/*
+ * Name: iucv_send_array
+ * Purpose: This function transmits data to another application.
+ * The contents of buffer is the address of the array of
+ * addresses and lengths of discontiguous buffers that hold
+ * the message text. This is a one-way message and the
+ * receiver will not reply to the message.
+ * Input: pathid - Path identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag to be associated witht the message.
+ * flags1 - Option for path.
+ * IPPRTY- specifies if you want to send priority message.
+ * buffer - Address of array of send buffers.
+ * buflen - Total length of send buffers.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+*/
+int iucv_send_array (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls,
+ u32 msgtag,
+ int flags1, iucv_array_t * buffer, ulong buflen);
+
+/*
+ * Name: iucv_send_prmmsg
+ * Purpose: This function transmits data to another application.
+ * Prmmsg specifies that the 8-bytes of data are to be moved
+ * into the parameter list. This is a one-way message and the
+ * receiver will not reply to the message.
+ * Input: pathid - Path identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag to be associated with the message.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 specifies if you want to send priority message.
+ * prmmsg - 8-bytes of data to be placed into parameter list.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_send_prmmsg (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls, u32 msgtag, int flags1, uchar prmmsg[8]);
+
+/*
+ * Name: iucv_send2way
+ * Purpose: This function transmits data to another application.
+ * Data to be transmitted is in a buffer. The receiver
+ * of the send is expected to reply to the message and
+ * a buffer is provided into which IUCV moves the reply
+ * to this message.
+ * Input: pathid - Path identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag associated with the message.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 Specifies if you want to send priority message.
+ * buffer - Address of send buffer.
+ * buflen - Length of send buffer.
+ * ansbuf - Address of buffer into which IUCV moves the reply of
+ * this message.
+ * anslen - Address of length of buffer.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer or ansbuf address is NULL.
+*/
+int iucv_send2way (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls,
+ u32 msgtag,
+ int flags1,
+ void *buffer, ulong buflen, void *ansbuf, ulong anslen);
+
+/*
+ * Name: iucv_send2way_array
+ * Purpose: This function transmits data to another application.
+ * The contents of buffer is the address of the array of
+ * addresses and lengths of discontiguous buffers that hold
+ * the message text. The receiver of the send is expected to
+ * reply to the message and a buffer is provided into which
+ * IUCV moves the reply to this message.
+ * Input: pathid - Path identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag to be associated with the message.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 Specifies if you want to send priority message.
+ * buffer - Sddress of array of send buffers.
+ * buflen - Total length of send buffers.
+ * ansbuf - Address of array of buffer into which IUCV moves the reply
+ * of this message.
+ * anslen - Address of length reply buffers.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+*/
+int iucv_send2way_array (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls,
+ u32 msgtag,
+ int flags1,
+ iucv_array_t * buffer,
+ ulong buflen, iucv_array_t * ansbuf, ulong anslen);
+
+/*
+ * Name: iucv_send2way_prmmsg
+ * Purpose: This function transmits data to another application.
+ * Prmmsg specifies that the 8-bytes of data are to be moved
+ * into the parameter list. This is a two-way message and the
+ * receiver of the message is expected to reply. A buffer
+ * is provided into which IUCV moves the reply to this
+ * message.
+ * Input: pathid - Rath identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag to be associated with the message.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 Specifies if you want to send priority message.
+ * prmmsg - 8-bytes of data to be placed in parameter list.
+ * ansbuf - Address of buffer into which IUCV moves the reply of
+ * this message.
+ * anslen - Address of length of buffer.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Buffer address is NULL.
+*/
+int iucv_send2way_prmmsg (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls,
+ u32 msgtag,
+ ulong flags1,
+ uchar prmmsg[8], void *ansbuf, ulong anslen);
+
+/*
+ * Name: iucv_send2way_prmmsg_array
+ * Purpose: This function transmits data to another application.
+ * Prmmsg specifies that the 8-bytes of data are to be moved
+ * into the parameter list. This is a two-way message and the
+ * receiver of the message is expected to reply. A buffer
+ * is provided into which IUCV moves the reply to this
+ * message. The contents of ansbuf is the address of the
+ * array of addresses and lengths of discontiguous buffers
+ * that contain the reply.
+ * Input: pathid - Path identification number.
+ * trgcls - Specifies target class.
+ * srccls - Specifies the source message class.
+ * msgtag - Specifies a tag to be associated with the message.
+ * flags1 - Option for path.
+ * IPPRTY- 0x20 specifies if you want to send priority message.
+ * prmmsg - 8-bytes of data to be placed into the parameter list.
+ * ansbuf - Address of array of buffer into which IUCV moves the reply
+ * of this message.
+ * anslen - Address of length of reply buffers.
+ * Output: msgid - Specifies the message ID.
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Ansbuf address is NULL.
+*/
+int iucv_send2way_prmmsg_array (u16 pathid,
+ u32 * msgid,
+ u32 trgcls,
+ u32 srccls,
+ u32 msgtag,
+ int flags1,
+ uchar prmmsg[8],
+ iucv_array_t * ansbuf, ulong anslen);
+
+/*
+ * Name: iucv_setmask
+ * Purpose: This function enables or disables the following IUCV
+ * external interruptions: Nonpriority and priority message
+ * interrupts, nonpriority and priority reply interrupts.
+ * Input: SetMaskFlag - options for interrupts
+ * 0x80 - Nonpriority_MessagePendingInterruptsFlag
+ * 0x40 - Priority_MessagePendingInterruptsFlag
+ * 0x20 - Nonpriority_MessageCompletionInterruptsFlag
+ * 0x10 - Priority_MessageCompletionInterruptsFlag
+ * 0x08 - IUCVControlInterruptsFlag
+ * Output: NA
+ * Return: Return code from CP IUCV call.
+*/
+int iucv_setmask (int SetMaskFlag);
+
+/*
+ * Name: iucv_sever
+ * Purpose: This function terminates an IUCV path.
+ * Input: pathid - Path identification number.
+ * user_data - 16-bytes of user data.
+ * Output: NA
+ * Return: Return code from CP IUCV call.
+ * (-EINVAL) - Interal error, wild pointer.
+*/
+int iucv_sever (u16 pathid, uchar user_data[16]);
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
new file mode 100644
index 0000000..0f76e94
--- /dev/null
+++ b/drivers/s390/net/lcs.c
@@ -0,0 +1,2347 @@
+/*
+ * linux/drivers/s390/net/lcs.c
+ *
+ * Linux for S/390 Lan Channel Station Network Driver
+ *
+ * Copyright (C) 1999-2001 IBM Deutschland Entwicklung GmbH,
+ * IBM Corporation
+ * Author(s): Original Code written by
+ * DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
+ * Rewritten by
+ * Frank Pavlic (pavlic@de.ibm.com) and
+ * Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * $Revision: 1.96 $ $Date: 2004/11/11 13:42:33 $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/if.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/trdevice.h>
+#include <linux/fddidevice.h>
+#include <linux/inetdevice.h>
+#include <linux/in.h>
+#include <linux/igmp.h>
+#include <linux/delay.h>
+#include <net/arp.h>
+#include <net/ip.h>
+
+#include <asm/debug.h>
+#include <asm/idals.h>
+#include <asm/timex.h>
+#include <linux/device.h>
+#include <asm/ccwgroup.h>
+
+#include "lcs.h"
+#include "cu3088.h"
+
+
+#if !defined(CONFIG_NET_ETHERNET) && \
+ !defined(CONFIG_TR) && !defined(CONFIG_FDDI)
+#error Cannot compile lcs.c without some net devices switched on.
+#endif
+
+/**
+ * initialization string for output
+ */
+#define VERSION_LCS_C "$Revision: 1.96 $"
+
+static char version[] __initdata = "LCS driver ("VERSION_LCS_C "/" VERSION_LCS_H ")";
+static char debug_buffer[255];
+
+/**
+ * Some prototypes.
+ */
+static void lcs_tasklet(unsigned long);
+static void lcs_start_kernel_thread(struct lcs_card *card);
+static void lcs_get_frames_cb(struct lcs_channel *, struct lcs_buffer *);
+static int lcs_send_delipm(struct lcs_card *, struct lcs_ipm_list *);
+
+/**
+ * Debug Facility Stuff
+ */
+static debug_info_t *lcs_dbf_setup;
+static debug_info_t *lcs_dbf_trace;
+
+/**
+ * LCS Debug Facility functions
+ */
+static void
+lcs_unregister_debug_facility(void)
+{
+ if (lcs_dbf_setup)
+ debug_unregister(lcs_dbf_setup);
+ if (lcs_dbf_trace)
+ debug_unregister(lcs_dbf_trace);
+}
+
+static int
+lcs_register_debug_facility(void)
+{
+ lcs_dbf_setup = debug_register("lcs_setup", 1, 1, 8);
+ lcs_dbf_trace = debug_register("lcs_trace", 1, 2, 8);
+ if (lcs_dbf_setup == NULL || lcs_dbf_trace == NULL) {
+ PRINT_ERR("Not enough memory for debug facility.\n");
+ lcs_unregister_debug_facility();
+ return -ENOMEM;
+ }
+ debug_register_view(lcs_dbf_setup, &debug_hex_ascii_view);
+ debug_set_level(lcs_dbf_setup, 4);
+ debug_register_view(lcs_dbf_trace, &debug_hex_ascii_view);
+ debug_set_level(lcs_dbf_trace, 4);
+ return 0;
+}
+
+/**
+ * Allocate io buffers.
+ */
+static int
+lcs_alloc_channel(struct lcs_channel *channel)
+{
+ int cnt;
+
+ LCS_DBF_TEXT(2, setup, "ichalloc");
+ for (cnt = 0; cnt < LCS_NUM_BUFFS; cnt++) {
+ /* alloc memory fo iobuffer */
+ channel->iob[cnt].data = (void *)
+ kmalloc(LCS_IOBUFFERSIZE, GFP_DMA | GFP_KERNEL);
+ if (channel->iob[cnt].data == NULL)
+ break;
+ memset(channel->iob[cnt].data, 0, LCS_IOBUFFERSIZE);
+ channel->iob[cnt].state = BUF_STATE_EMPTY;
+ }
+ if (cnt < LCS_NUM_BUFFS) {
+ /* Not all io buffers could be allocated. */
+ LCS_DBF_TEXT(2, setup, "echalloc");
+ while (cnt-- > 0)
+ kfree(channel->iob[cnt].data);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/**
+ * Free io buffers.
+ */
+static void
+lcs_free_channel(struct lcs_channel *channel)
+{
+ int cnt;
+
+ LCS_DBF_TEXT(2, setup, "ichfree");
+ for (cnt = 0; cnt < LCS_NUM_BUFFS; cnt++) {
+ if (channel->iob[cnt].data != NULL)
+ kfree(channel->iob[cnt].data);
+ channel->iob[cnt].data = NULL;
+ }
+}
+
+/*
+ * Cleanup channel.
+ */
+static void
+lcs_cleanup_channel(struct lcs_channel *channel)
+{
+ LCS_DBF_TEXT(3, setup, "cleanch");
+ /* Kill write channel tasklets. */
+ tasklet_kill(&channel->irq_tasklet);
+ /* Free channel buffers. */
+ lcs_free_channel(channel);
+}
+
+/**
+ * LCS free memory for card and channels.
+ */
+static void
+lcs_free_card(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(2, setup, "remcard");
+ LCS_DBF_HEX(2, setup, &card, sizeof(void*));
+ kfree(card);
+}
+
+/**
+ * LCS alloc memory for card and channels
+ */
+static struct lcs_card *
+lcs_alloc_card(void)
+{
+ struct lcs_card *card;
+ int rc;
+
+ LCS_DBF_TEXT(2, setup, "alloclcs");
+
+ card = kmalloc(sizeof(struct lcs_card), GFP_KERNEL | GFP_DMA);
+ if (card == NULL)
+ return NULL;
+ memset(card, 0, sizeof(struct lcs_card));
+ card->lan_type = LCS_FRAME_TYPE_AUTO;
+ card->pkt_seq = 0;
+ card->lancmd_timeout = LCS_LANCMD_TIMEOUT_DEFAULT;
+ /* Allocate io buffers for the read channel. */
+ rc = lcs_alloc_channel(&card->read);
+ if (rc){
+ LCS_DBF_TEXT(2, setup, "iccwerr");
+ lcs_free_card(card);
+ return NULL;
+ }
+ /* Allocate io buffers for the write channel. */
+ rc = lcs_alloc_channel(&card->write);
+ if (rc) {
+ LCS_DBF_TEXT(2, setup, "iccwerr");
+ lcs_cleanup_channel(&card->read);
+ lcs_free_card(card);
+ return NULL;
+ }
+
+#ifdef CONFIG_IP_MULTICAST
+ INIT_LIST_HEAD(&card->ipm_list);
+#endif
+ LCS_DBF_HEX(2, setup, &card, sizeof(void*));
+ return card;
+}
+
+/*
+ * Setup read channel.
+ */
+static void
+lcs_setup_read_ccws(struct lcs_card *card)
+{
+ int cnt;
+
+ LCS_DBF_TEXT(2, setup, "ireadccw");
+ /* Setup read ccws. */
+ memset(card->read.ccws, 0, sizeof (struct ccw1) * (LCS_NUM_BUFFS + 1));
+ for (cnt = 0; cnt < LCS_NUM_BUFFS; cnt++) {
+ card->read.ccws[cnt].cmd_code = LCS_CCW_READ;
+ card->read.ccws[cnt].count = LCS_IOBUFFERSIZE;
+ card->read.ccws[cnt].flags =
+ CCW_FLAG_CC | CCW_FLAG_SLI | CCW_FLAG_PCI;
+ /*
+ * Note: we have allocated the buffer with GFP_DMA, so
+ * we do not need to do set_normalized_cda.
+ */
+ card->read.ccws[cnt].cda =
+ (__u32) __pa(card->read.iob[cnt].data);
+ ((struct lcs_header *)
+ card->read.iob[cnt].data)->offset = LCS_ILLEGAL_OFFSET;
+ card->read.iob[cnt].callback = lcs_get_frames_cb;
+ card->read.iob[cnt].state = BUF_STATE_READY;
+ card->read.iob[cnt].count = LCS_IOBUFFERSIZE;
+ }
+ card->read.ccws[0].flags &= ~CCW_FLAG_PCI;
+ card->read.ccws[LCS_NUM_BUFFS - 1].flags &= ~CCW_FLAG_PCI;
+ card->read.ccws[LCS_NUM_BUFFS - 1].flags |= CCW_FLAG_SUSPEND;
+ /* Last ccw is a tic (transfer in channel). */
+ card->read.ccws[LCS_NUM_BUFFS].cmd_code = LCS_CCW_TRANSFER;
+ card->read.ccws[LCS_NUM_BUFFS].cda =
+ (__u32) __pa(card->read.ccws);
+ /* Setg initial state of the read channel. */
+ card->read.state = CH_STATE_INIT;
+
+ card->read.io_idx = 0;
+ card->read.buf_idx = 0;
+}
+
+static void
+lcs_setup_read(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(3, setup, "initread");
+
+ lcs_setup_read_ccws(card);
+ /* Initialize read channel tasklet. */
+ card->read.irq_tasklet.data = (unsigned long) &card->read;
+ card->read.irq_tasklet.func = lcs_tasklet;
+ /* Initialize waitqueue. */
+ init_waitqueue_head(&card->read.wait_q);
+}
+
+/*
+ * Setup write channel.
+ */
+static void
+lcs_setup_write_ccws(struct lcs_card *card)
+{
+ int cnt;
+
+ LCS_DBF_TEXT(3, setup, "iwritccw");
+ /* Setup write ccws. */
+ memset(card->write.ccws, 0, sizeof(struct ccw1) * LCS_NUM_BUFFS + 1);
+ for (cnt = 0; cnt < LCS_NUM_BUFFS; cnt++) {
+ card->write.ccws[cnt].cmd_code = LCS_CCW_WRITE;
+ card->write.ccws[cnt].count = 0;
+ card->write.ccws[cnt].flags =
+ CCW_FLAG_SUSPEND | CCW_FLAG_CC | CCW_FLAG_SLI;
+ /*
+ * Note: we have allocated the buffer with GFP_DMA, so
+ * we do not need to do set_normalized_cda.
+ */
+ card->write.ccws[cnt].cda =
+ (__u32) __pa(card->write.iob[cnt].data);
+ }
+ /* Last ccw is a tic (transfer in channel). */
+ card->write.ccws[LCS_NUM_BUFFS].cmd_code = LCS_CCW_TRANSFER;
+ card->write.ccws[LCS_NUM_BUFFS].cda =
+ (__u32) __pa(card->write.ccws);
+ /* Set initial state of the write channel. */
+ card->read.state = CH_STATE_INIT;
+
+ card->write.io_idx = 0;
+ card->write.buf_idx = 0;
+}
+
+static void
+lcs_setup_write(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(3, setup, "initwrit");
+
+ lcs_setup_write_ccws(card);
+ /* Initialize write channel tasklet. */
+ card->write.irq_tasklet.data = (unsigned long) &card->write;
+ card->write.irq_tasklet.func = lcs_tasklet;
+ /* Initialize waitqueue. */
+ init_waitqueue_head(&card->write.wait_q);
+}
+
+static void
+lcs_set_allowed_threads(struct lcs_card *card, unsigned long threads)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->mask_lock, flags);
+ card->thread_allowed_mask = threads;
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ wake_up(&card->wait_q);
+}
+static inline int
+lcs_threads_running(struct lcs_card *card, unsigned long threads)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&card->mask_lock, flags);
+ rc = (card->thread_running_mask & threads);
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ return rc;
+}
+
+static int
+lcs_wait_for_threads(struct lcs_card *card, unsigned long threads)
+{
+ return wait_event_interruptible(card->wait_q,
+ lcs_threads_running(card, threads) == 0);
+}
+
+static inline int
+lcs_set_thread_start_bit(struct lcs_card *card, unsigned long thread)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->mask_lock, flags);
+ if ( !(card->thread_allowed_mask & thread) ||
+ (card->thread_start_mask & thread) ) {
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ return -EPERM;
+ }
+ card->thread_start_mask |= thread;
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ return 0;
+}
+
+static void
+lcs_clear_thread_running_bit(struct lcs_card *card, unsigned long thread)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->mask_lock, flags);
+ card->thread_running_mask &= ~thread;
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ wake_up(&card->wait_q);
+}
+
+static inline int
+__lcs_do_run_thread(struct lcs_card *card, unsigned long thread)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&card->mask_lock, flags);
+ if (card->thread_start_mask & thread){
+ if ((card->thread_allowed_mask & thread) &&
+ !(card->thread_running_mask & thread)){
+ rc = 1;
+ card->thread_start_mask &= ~thread;
+ card->thread_running_mask |= thread;
+ } else
+ rc = -EPERM;
+ }
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ return rc;
+}
+
+static int
+lcs_do_run_thread(struct lcs_card *card, unsigned long thread)
+{
+ int rc = 0;
+ wait_event(card->wait_q,
+ (rc = __lcs_do_run_thread(card, thread)) >= 0);
+ return rc;
+}
+
+static int
+lcs_do_start_thread(struct lcs_card *card, unsigned long thread)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&card->mask_lock, flags);
+ LCS_DBF_TEXT_(4, trace, " %02x%02x%02x",
+ (u8) card->thread_start_mask,
+ (u8) card->thread_allowed_mask,
+ (u8) card->thread_running_mask);
+ rc = (card->thread_start_mask & thread);
+ spin_unlock_irqrestore(&card->mask_lock, flags);
+ return rc;
+}
+
+/**
+ * Initialize channels,card and state machines.
+ */
+static void
+lcs_setup_card(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(2, setup, "initcard");
+ LCS_DBF_HEX(2, setup, &card, sizeof(void*));
+
+ lcs_setup_read(card);
+ lcs_setup_write(card);
+ /* Set cards initial state. */
+ card->state = DEV_STATE_DOWN;
+ card->tx_buffer = NULL;
+ card->tx_emitted = 0;
+
+ /* Initialize kernel thread task used for LGW commands. */
+ INIT_WORK(&card->kernel_thread_starter,
+ (void *)lcs_start_kernel_thread,card);
+ card->thread_start_mask = 0;
+ card->thread_allowed_mask = 0;
+ card->thread_running_mask = 0;
+ init_waitqueue_head(&card->wait_q);
+ spin_lock_init(&card->lock);
+ spin_lock_init(&card->ipm_lock);
+ spin_lock_init(&card->mask_lock);
+#ifdef CONFIG_IP_MULTICAST
+ INIT_LIST_HEAD(&card->ipm_list);
+#endif
+ INIT_LIST_HEAD(&card->lancmd_waiters);
+}
+
+static inline void
+lcs_clear_multicast_list(struct lcs_card *card)
+{
+#ifdef CONFIG_IP_MULTICAST
+ struct lcs_ipm_list *ipm;
+ unsigned long flags;
+
+ /* Free multicast list. */
+ LCS_DBF_TEXT(3, setup, "clmclist");
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ while (!list_empty(&card->ipm_list)){
+ ipm = list_entry(card->ipm_list.next,
+ struct lcs_ipm_list, list);
+ list_del(&ipm->list);
+ if (ipm->ipm_state != LCS_IPM_STATE_SET_REQUIRED){
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+ lcs_send_delipm(card, ipm);
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ }
+ kfree(ipm);
+ }
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+#endif
+}
+/**
+ * Cleanup channels,card and state machines.
+ */
+static void
+lcs_cleanup_card(struct lcs_card *card)
+{
+
+ LCS_DBF_TEXT(3, setup, "cleancrd");
+ LCS_DBF_HEX(2,setup,&card,sizeof(void*));
+
+ if (card->dev != NULL)
+ free_netdev(card->dev);
+ /* Cleanup channels. */
+ lcs_cleanup_channel(&card->write);
+ lcs_cleanup_channel(&card->read);
+}
+
+/**
+ * Start channel.
+ */
+static int
+lcs_start_channel(struct lcs_channel *channel)
+{
+ unsigned long flags;
+ int rc;
+
+ LCS_DBF_TEXT_(4,trace,"ssch%s", channel->ccwdev->dev.bus_id);
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_start(channel->ccwdev,
+ channel->ccws + channel->io_idx, 0, 0,
+ DOIO_DENY_PREFETCH | DOIO_ALLOW_SUSPEND);
+ if (rc == 0)
+ channel->state = CH_STATE_RUNNING;
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+ if (rc) {
+ LCS_DBF_TEXT_(4,trace,"essh%s", channel->ccwdev->dev.bus_id);
+ PRINT_ERR("Error in starting channel, rc=%d!\n", rc);
+ }
+ return rc;
+}
+
+static int
+lcs_clear_channel(struct lcs_channel *channel)
+{
+ unsigned long flags;
+ int rc;
+
+ LCS_DBF_TEXT(4,trace,"clearch");
+ LCS_DBF_TEXT_(4,trace,"%s", channel->ccwdev->dev.bus_id);
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_clear(channel->ccwdev, (addr_t) channel);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+ if (rc) {
+ LCS_DBF_TEXT_(4,trace,"ecsc%s", channel->ccwdev->dev.bus_id);
+ return rc;
+ }
+ wait_event(channel->wait_q, (channel->state == CH_STATE_CLEARED));
+ channel->state = CH_STATE_STOPPED;
+ return rc;
+}
+
+
+/**
+ * Stop channel.
+ */
+static int
+lcs_stop_channel(struct lcs_channel *channel)
+{
+ unsigned long flags;
+ int rc;
+
+ if (channel->state == CH_STATE_STOPPED)
+ return 0;
+ LCS_DBF_TEXT(4,trace,"haltsch");
+ LCS_DBF_TEXT_(4,trace,"%s", channel->ccwdev->dev.bus_id);
+ channel->state = CH_STATE_INIT;
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_halt(channel->ccwdev, (addr_t) channel);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+ if (rc) {
+ LCS_DBF_TEXT_(4,trace,"ehsc%s", channel->ccwdev->dev.bus_id);
+ return rc;
+ }
+ /* Asynchronous halt initialted. Wait for its completion. */
+ wait_event(channel->wait_q, (channel->state == CH_STATE_HALTED));
+ lcs_clear_channel(channel);
+ return 0;
+}
+
+/**
+ * start read and write channel
+ */
+static int
+lcs_start_channels(struct lcs_card *card)
+{
+ int rc;
+
+ LCS_DBF_TEXT(2, trace, "chstart");
+ /* start read channel */
+ rc = lcs_start_channel(&card->read);
+ if (rc)
+ return rc;
+ /* start write channel */
+ rc = lcs_start_channel(&card->write);
+ if (rc)
+ lcs_stop_channel(&card->read);
+ return rc;
+}
+
+/**
+ * stop read and write channel
+ */
+static int
+lcs_stop_channels(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(2, trace, "chhalt");
+ lcs_stop_channel(&card->read);
+ lcs_stop_channel(&card->write);
+ return 0;
+}
+
+/**
+ * Get empty buffer.
+ */
+static struct lcs_buffer *
+__lcs_get_buffer(struct lcs_channel *channel)
+{
+ int index;
+
+ LCS_DBF_TEXT(5, trace, "_getbuff");
+ index = channel->io_idx;
+ do {
+ if (channel->iob[index].state == BUF_STATE_EMPTY) {
+ channel->iob[index].state = BUF_STATE_LOCKED;
+ return channel->iob + index;
+ }
+ index = (index + 1) & (LCS_NUM_BUFFS - 1);
+ } while (index != channel->io_idx);
+ return NULL;
+}
+
+static struct lcs_buffer *
+lcs_get_buffer(struct lcs_channel *channel)
+{
+ struct lcs_buffer *buffer;
+ unsigned long flags;
+
+ LCS_DBF_TEXT(5, trace, "getbuff");
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ buffer = __lcs_get_buffer(channel);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+ return buffer;
+}
+
+/**
+ * Resume channel program if the channel is suspended.
+ */
+static int
+__lcs_resume_channel(struct lcs_channel *channel)
+{
+ int rc;
+
+ if (channel->state != CH_STATE_SUSPENDED)
+ return 0;
+ if (channel->ccws[channel->io_idx].flags & CCW_FLAG_SUSPEND)
+ return 0;
+ LCS_DBF_TEXT_(5, trace, "rsch%s", channel->ccwdev->dev.bus_id);
+ rc = ccw_device_resume(channel->ccwdev);
+ if (rc) {
+ LCS_DBF_TEXT_(4, trace, "ersc%s", channel->ccwdev->dev.bus_id);
+ PRINT_ERR("Error in lcs_resume_channel: rc=%d\n",rc);
+ } else
+ channel->state = CH_STATE_RUNNING;
+ return rc;
+
+}
+
+/**
+ * Make a buffer ready for processing.
+ */
+static inline void
+__lcs_ready_buffer_bits(struct lcs_channel *channel, int index)
+{
+ int prev, next;
+
+ LCS_DBF_TEXT(5, trace, "rdybits");
+ prev = (index - 1) & (LCS_NUM_BUFFS - 1);
+ next = (index + 1) & (LCS_NUM_BUFFS - 1);
+ /* Check if we may clear the suspend bit of this buffer. */
+ if (channel->ccws[next].flags & CCW_FLAG_SUSPEND) {
+ /* Check if we have to set the PCI bit. */
+ if (!(channel->ccws[prev].flags & CCW_FLAG_SUSPEND))
+ /* Suspend bit of the previous buffer is not set. */
+ channel->ccws[index].flags |= CCW_FLAG_PCI;
+ /* Suspend bit of the next buffer is set. */
+ channel->ccws[index].flags &= ~CCW_FLAG_SUSPEND;
+ }
+}
+
+static int
+lcs_ready_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
+{
+ unsigned long flags;
+ int index, rc;
+
+ LCS_DBF_TEXT(5, trace, "rdybuff");
+ if (buffer->state != BUF_STATE_LOCKED &&
+ buffer->state != BUF_STATE_PROCESSED)
+ BUG();
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ buffer->state = BUF_STATE_READY;
+ index = buffer - channel->iob;
+ /* Set length. */
+ channel->ccws[index].count = buffer->count;
+ /* Check relevant PCI/suspend bits. */
+ __lcs_ready_buffer_bits(channel, index);
+ rc = __lcs_resume_channel(channel);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+ return rc;
+}
+
+/**
+ * Mark the buffer as processed. Take care of the suspend bit
+ * of the previous buffer. This function is called from
+ * interrupt context, so the lock must not be taken.
+ */
+static int
+__lcs_processed_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
+{
+ int index, prev, next;
+
+ LCS_DBF_TEXT(5, trace, "prcsbuff");
+ if (buffer->state != BUF_STATE_READY)
+ BUG();
+ buffer->state = BUF_STATE_PROCESSED;
+ index = buffer - channel->iob;
+ prev = (index - 1) & (LCS_NUM_BUFFS - 1);
+ next = (index + 1) & (LCS_NUM_BUFFS - 1);
+ /* Set the suspend bit and clear the PCI bit of this buffer. */
+ channel->ccws[index].flags |= CCW_FLAG_SUSPEND;
+ channel->ccws[index].flags &= ~CCW_FLAG_PCI;
+ /* Check the suspend bit of the previous buffer. */
+ if (channel->iob[prev].state == BUF_STATE_READY) {
+ /*
+ * Previous buffer is in state ready. It might have
+ * happened in lcs_ready_buffer that the suspend bit
+ * has not been cleared to avoid an endless loop.
+ * Do it now.
+ */
+ __lcs_ready_buffer_bits(channel, prev);
+ }
+ /* Clear PCI bit of next buffer. */
+ channel->ccws[next].flags &= ~CCW_FLAG_PCI;
+ return __lcs_resume_channel(channel);
+}
+
+/**
+ * Put a processed buffer back to state empty.
+ */
+static void
+lcs_release_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
+{
+ unsigned long flags;
+
+ LCS_DBF_TEXT(5, trace, "relbuff");
+ if (buffer->state != BUF_STATE_LOCKED &&
+ buffer->state != BUF_STATE_PROCESSED)
+ BUG();
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ buffer->state = BUF_STATE_EMPTY;
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+}
+
+/**
+ * Get buffer for a lan command.
+ */
+static struct lcs_buffer *
+lcs_get_lancmd(struct lcs_card *card, int count)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(4, trace, "getlncmd");
+ /* Get buffer and wait if none is available. */
+ wait_event(card->write.wait_q,
+ ((buffer = lcs_get_buffer(&card->write)) != NULL));
+ count += sizeof(struct lcs_header);
+ *(__u16 *)(buffer->data + count) = 0;
+ buffer->count = count + sizeof(__u16);
+ buffer->callback = lcs_release_buffer;
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->offset = count;
+ cmd->type = LCS_FRAME_TYPE_CONTROL;
+ cmd->slot = 0;
+ return buffer;
+}
+
+
+static void
+lcs_get_reply(struct lcs_reply *reply)
+{
+ WARN_ON(atomic_read(&reply->refcnt) <= 0);
+ atomic_inc(&reply->refcnt);
+}
+
+static void
+lcs_put_reply(struct lcs_reply *reply)
+{
+ WARN_ON(atomic_read(&reply->refcnt) <= 0);
+ if (atomic_dec_and_test(&reply->refcnt)) {
+ kfree(reply);
+ }
+
+}
+
+static struct lcs_reply *
+lcs_alloc_reply(struct lcs_cmd *cmd)
+{
+ struct lcs_reply *reply;
+
+ LCS_DBF_TEXT(4, trace, "getreply");
+
+ reply = kmalloc(sizeof(struct lcs_reply), GFP_ATOMIC);
+ if (!reply)
+ return NULL;
+ memset(reply,0,sizeof(struct lcs_reply));
+ atomic_set(&reply->refcnt,1);
+ reply->sequence_no = cmd->sequence_no;
+ reply->received = 0;
+ reply->rc = 0;
+ init_waitqueue_head(&reply->wait_q);
+
+ return reply;
+}
+
+/**
+ * Notifier function for lancmd replies. Called from read irq.
+ */
+static void
+lcs_notify_lancmd_waiters(struct lcs_card *card, struct lcs_cmd *cmd)
+{
+ struct list_head *l, *n;
+ struct lcs_reply *reply;
+
+ LCS_DBF_TEXT(4, trace, "notiwait");
+ spin_lock(&card->lock);
+ list_for_each_safe(l, n, &card->lancmd_waiters) {
+ reply = list_entry(l, struct lcs_reply, list);
+ if (reply->sequence_no == cmd->sequence_no) {
+ lcs_get_reply(reply);
+ list_del_init(&reply->list);
+ if (reply->callback != NULL)
+ reply->callback(card, cmd);
+ reply->received = 1;
+ reply->rc = cmd->return_code;
+ wake_up(&reply->wait_q);
+ lcs_put_reply(reply);
+ break;
+ }
+ }
+ spin_unlock(&card->lock);
+}
+
+/**
+ * Emit buffer of a lan comand.
+ */
+void
+lcs_lancmd_timeout(unsigned long data)
+{
+ struct lcs_reply *reply, *list_reply, *r;
+ unsigned long flags;
+
+ LCS_DBF_TEXT(4, trace, "timeout");
+ reply = (struct lcs_reply *) data;
+ spin_lock_irqsave(&reply->card->lock, flags);
+ list_for_each_entry_safe(list_reply, r,
+ &reply->card->lancmd_waiters,list) {
+ if (reply == list_reply) {
+ lcs_get_reply(reply);
+ list_del_init(&reply->list);
+ spin_unlock_irqrestore(&reply->card->lock, flags);
+ reply->received = 1;
+ reply->rc = -ETIME;
+ wake_up(&reply->wait_q);
+ lcs_put_reply(reply);
+ return;
+ }
+ }
+ spin_unlock_irqrestore(&reply->card->lock, flags);
+}
+
+static int
+lcs_send_lancmd(struct lcs_card *card, struct lcs_buffer *buffer,
+ void (*reply_callback)(struct lcs_card *, struct lcs_cmd *))
+{
+ struct lcs_reply *reply;
+ struct lcs_cmd *cmd;
+ struct timer_list timer;
+ unsigned long flags;
+ int rc;
+
+ LCS_DBF_TEXT(4, trace, "sendcmd");
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->return_code = 0;
+ cmd->sequence_no = card->sequence_no++;
+ reply = lcs_alloc_reply(cmd);
+ if (!reply)
+ return -ENOMEM;
+ reply->callback = reply_callback;
+ reply->card = card;
+ spin_lock_irqsave(&card->lock, flags);
+ list_add_tail(&reply->list, &card->lancmd_waiters);
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ buffer->callback = lcs_release_buffer;
+ rc = lcs_ready_buffer(&card->write, buffer);
+ if (rc)
+ return rc;
+ init_timer(&timer);
+ timer.function = lcs_lancmd_timeout;
+ timer.data = (unsigned long) reply;
+ timer.expires = jiffies + HZ*card->lancmd_timeout;
+ add_timer(&timer);
+ wait_event(reply->wait_q, reply->received);
+ del_timer_sync(&timer);
+ LCS_DBF_TEXT_(4, trace, "rc:%d",reply->rc);
+ rc = reply->rc;
+ lcs_put_reply(reply);
+ return rc ? -EIO : 0;
+}
+
+/**
+ * LCS startup command
+ */
+static int
+lcs_send_startup(struct lcs_card *card, __u8 initiator)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2, trace, "startup");
+ buffer = lcs_get_lancmd(card, LCS_STD_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_STARTUP;
+ cmd->initiator = initiator;
+ cmd->cmd.lcs_startup.buff_size = LCS_IOBUFFERSIZE;
+ return lcs_send_lancmd(card, buffer, NULL);
+}
+
+/**
+ * LCS shutdown command
+ */
+static int
+lcs_send_shutdown(struct lcs_card *card)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2, trace, "shutdown");
+ buffer = lcs_get_lancmd(card, LCS_STD_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_SHUTDOWN;
+ cmd->initiator = LCS_INITIATOR_TCPIP;
+ return lcs_send_lancmd(card, buffer, NULL);
+}
+
+/**
+ * LCS lanstat command
+ */
+static void
+__lcs_lanstat_cb(struct lcs_card *card, struct lcs_cmd *cmd)
+{
+ LCS_DBF_TEXT(2, trace, "statcb");
+ memcpy(card->mac, cmd->cmd.lcs_lanstat_cmd.mac_addr, LCS_MAC_LENGTH);
+}
+
+static int
+lcs_send_lanstat(struct lcs_card *card)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2,trace, "cmdstat");
+ buffer = lcs_get_lancmd(card, LCS_STD_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ /* Setup lanstat command. */
+ cmd->cmd_code = LCS_CMD_LANSTAT;
+ cmd->initiator = LCS_INITIATOR_TCPIP;
+ cmd->cmd.lcs_std_cmd.lan_type = card->lan_type;
+ cmd->cmd.lcs_std_cmd.portno = card->portno;
+ return lcs_send_lancmd(card, buffer, __lcs_lanstat_cb);
+}
+
+/**
+ * send stoplan command
+ */
+static int
+lcs_send_stoplan(struct lcs_card *card, __u8 initiator)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2, trace, "cmdstpln");
+ buffer = lcs_get_lancmd(card, LCS_STD_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_STOPLAN;
+ cmd->initiator = initiator;
+ cmd->cmd.lcs_std_cmd.lan_type = card->lan_type;
+ cmd->cmd.lcs_std_cmd.portno = card->portno;
+ return lcs_send_lancmd(card, buffer, NULL);
+}
+
+/**
+ * send startlan command
+ */
+static void
+__lcs_send_startlan_cb(struct lcs_card *card, struct lcs_cmd *cmd)
+{
+ LCS_DBF_TEXT(2, trace, "srtlancb");
+ card->lan_type = cmd->cmd.lcs_std_cmd.lan_type;
+ card->portno = cmd->cmd.lcs_std_cmd.portno;
+}
+
+static int
+lcs_send_startlan(struct lcs_card *card, __u8 initiator)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2, trace, "cmdstaln");
+ buffer = lcs_get_lancmd(card, LCS_STD_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_STARTLAN;
+ cmd->initiator = initiator;
+ cmd->cmd.lcs_std_cmd.lan_type = card->lan_type;
+ cmd->cmd.lcs_std_cmd.portno = card->portno;
+ return lcs_send_lancmd(card, buffer, __lcs_send_startlan_cb);
+}
+
+#ifdef CONFIG_IP_MULTICAST
+/**
+ * send setipm command (Multicast)
+ */
+static int
+lcs_send_setipm(struct lcs_card *card,struct lcs_ipm_list *ipm_list)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2, trace, "cmdsetim");
+ buffer = lcs_get_lancmd(card, LCS_MULTICAST_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_SETIPM;
+ cmd->initiator = LCS_INITIATOR_TCPIP;
+ cmd->cmd.lcs_qipassist.lan_type = card->lan_type;
+ cmd->cmd.lcs_qipassist.portno = card->portno;
+ cmd->cmd.lcs_qipassist.version = 4;
+ cmd->cmd.lcs_qipassist.num_ip_pairs = 1;
+ memcpy(cmd->cmd.lcs_qipassist.lcs_ipass_ctlmsg.ip_mac_pair,
+ &ipm_list->ipm, sizeof (struct lcs_ip_mac_pair));
+ LCS_DBF_TEXT_(2, trace, "%x",ipm_list->ipm.ip_addr);
+ return lcs_send_lancmd(card, buffer, NULL);
+}
+
+/**
+ * send delipm command (Multicast)
+ */
+static int
+lcs_send_delipm(struct lcs_card *card,struct lcs_ipm_list *ipm_list)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+
+ LCS_DBF_TEXT(2, trace, "cmddelim");
+ buffer = lcs_get_lancmd(card, LCS_MULTICAST_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_DELIPM;
+ cmd->initiator = LCS_INITIATOR_TCPIP;
+ cmd->cmd.lcs_qipassist.lan_type = card->lan_type;
+ cmd->cmd.lcs_qipassist.portno = card->portno;
+ cmd->cmd.lcs_qipassist.version = 4;
+ cmd->cmd.lcs_qipassist.num_ip_pairs = 1;
+ memcpy(cmd->cmd.lcs_qipassist.lcs_ipass_ctlmsg.ip_mac_pair,
+ &ipm_list->ipm, sizeof (struct lcs_ip_mac_pair));
+ LCS_DBF_TEXT_(2, trace, "%x",ipm_list->ipm.ip_addr);
+ return lcs_send_lancmd(card, buffer, NULL);
+}
+
+/**
+ * check if multicast is supported by LCS
+ */
+static void
+__lcs_check_multicast_cb(struct lcs_card *card, struct lcs_cmd *cmd)
+{
+ LCS_DBF_TEXT(2, trace, "chkmccb");
+ card->ip_assists_supported =
+ cmd->cmd.lcs_qipassist.ip_assists_supported;
+ card->ip_assists_enabled =
+ cmd->cmd.lcs_qipassist.ip_assists_enabled;
+}
+
+static int
+lcs_check_multicast_support(struct lcs_card *card)
+{
+ struct lcs_buffer *buffer;
+ struct lcs_cmd *cmd;
+ int rc;
+
+ LCS_DBF_TEXT(2, trace, "cmdqipa");
+ /* Send query ipassist. */
+ buffer = lcs_get_lancmd(card, LCS_STD_CMD_SIZE);
+ cmd = (struct lcs_cmd *) buffer->data;
+ cmd->cmd_code = LCS_CMD_QIPASSIST;
+ cmd->initiator = LCS_INITIATOR_TCPIP;
+ cmd->cmd.lcs_qipassist.lan_type = card->lan_type;
+ cmd->cmd.lcs_qipassist.portno = card->portno;
+ cmd->cmd.lcs_qipassist.version = 4;
+ cmd->cmd.lcs_qipassist.num_ip_pairs = 1;
+ rc = lcs_send_lancmd(card, buffer, __lcs_check_multicast_cb);
+ if (rc != 0) {
+ PRINT_ERR("Query IPAssist failed. Assuming unsupported!\n");
+ return -EOPNOTSUPP;
+ }
+ /* Print out supported assists: IPv6 */
+ PRINT_INFO("LCS device %s %s IPv6 support\n", card->dev->name,
+ (card->ip_assists_supported & LCS_IPASS_IPV6_SUPPORT) ?
+ "with" : "without");
+ /* Print out supported assist: Multicast */
+ PRINT_INFO("LCS device %s %s Multicast support\n", card->dev->name,
+ (card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT) ?
+ "with" : "without");
+ if (card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT)
+ return 0;
+ return -EOPNOTSUPP;
+}
+
+/**
+ * set or del multicast address on LCS card
+ */
+static void
+lcs_fix_multicast_list(struct lcs_card *card)
+{
+ struct list_head failed_list;
+ struct lcs_ipm_list *ipm, *tmp;
+ unsigned long flags;
+ int rc;
+
+ LCS_DBF_TEXT(4,trace, "fixipm");
+ INIT_LIST_HEAD(&failed_list);
+ spin_lock_irqsave(&card->ipm_lock, flags);
+list_modified:
+ list_for_each_entry_safe(ipm, tmp, &card->ipm_list, list){
+ switch (ipm->ipm_state) {
+ case LCS_IPM_STATE_SET_REQUIRED:
+ /* del from ipm_list so noone else can tamper with
+ * this entry */
+ list_del_init(&ipm->list);
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+ rc = lcs_send_setipm(card, ipm);
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ if (rc) {
+ PRINT_INFO("Adding multicast address failed."
+ "Table possibly full!\n");
+ /* store ipm in failed list -> will be added
+ * to ipm_list again, so a retry will be done
+ * during the next call of this function */
+ list_add_tail(&ipm->list, &failed_list);
+ } else {
+ ipm->ipm_state = LCS_IPM_STATE_ON_CARD;
+ /* re-insert into ipm_list */
+ list_add_tail(&ipm->list, &card->ipm_list);
+ }
+ goto list_modified;
+ case LCS_IPM_STATE_DEL_REQUIRED:
+ list_del(&ipm->list);
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+ lcs_send_delipm(card, ipm);
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ kfree(ipm);
+ goto list_modified;
+ case LCS_IPM_STATE_ON_CARD:
+ break;
+ }
+ }
+ /* re-insert all entries from the failed_list into ipm_list */
+ list_for_each_entry(ipm, &failed_list, list) {
+ list_del_init(&ipm->list);
+ list_add_tail(&ipm->list, &card->ipm_list);
+ }
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+ if (card->state == DEV_STATE_UP)
+ netif_wake_queue(card->dev);
+}
+
+/**
+ * get mac address for the relevant Multicast address
+ */
+static void
+lcs_get_mac_for_ipm(__u32 ipm, char *mac, struct net_device *dev)
+{
+ LCS_DBF_TEXT(4,trace, "getmac");
+ if (dev->type == ARPHRD_IEEE802_TR)
+ ip_tr_mc_map(ipm, mac);
+ else
+ ip_eth_mc_map(ipm, mac);
+}
+
+/**
+ * function called by net device to handle multicast address relevant things
+ */
+static inline void
+lcs_remove_mc_addresses(struct lcs_card *card, struct in_device *in4_dev)
+{
+ struct ip_mc_list *im4;
+ struct list_head *l;
+ struct lcs_ipm_list *ipm;
+ unsigned long flags;
+ char buf[MAX_ADDR_LEN];
+
+ LCS_DBF_TEXT(4, trace, "remmclst");
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ list_for_each(l, &card->ipm_list) {
+ ipm = list_entry(l, struct lcs_ipm_list, list);
+ for (im4 = in4_dev->mc_list; im4 != NULL; im4 = im4->next) {
+ lcs_get_mac_for_ipm(im4->multiaddr, buf, card->dev);
+ if ( (ipm->ipm.ip_addr == im4->multiaddr) &&
+ (memcmp(buf, &ipm->ipm.mac_addr,
+ LCS_MAC_LENGTH) == 0) )
+ break;
+ }
+ if (im4 == NULL)
+ ipm->ipm_state = LCS_IPM_STATE_DEL_REQUIRED;
+ }
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+}
+
+static inline struct lcs_ipm_list *
+lcs_check_addr_entry(struct lcs_card *card, struct ip_mc_list *im4, char *buf)
+{
+ struct lcs_ipm_list *tmp, *ipm = NULL;
+ struct list_head *l;
+ unsigned long flags;
+
+ LCS_DBF_TEXT(4, trace, "chkmcent");
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ list_for_each(l, &card->ipm_list) {
+ tmp = list_entry(l, struct lcs_ipm_list, list);
+ if ( (tmp->ipm.ip_addr == im4->multiaddr) &&
+ (memcmp(buf, &tmp->ipm.mac_addr,
+ LCS_MAC_LENGTH) == 0) ) {
+ ipm = tmp;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+ return ipm;
+}
+
+static inline void
+lcs_set_mc_addresses(struct lcs_card *card, struct in_device *in4_dev)
+{
+
+ struct ip_mc_list *im4;
+ struct lcs_ipm_list *ipm;
+ char buf[MAX_ADDR_LEN];
+ unsigned long flags;
+
+ LCS_DBF_TEXT(4, trace, "setmclst");
+ for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
+ lcs_get_mac_for_ipm(im4->multiaddr, buf, card->dev);
+ ipm = lcs_check_addr_entry(card, im4, buf);
+ if (ipm != NULL)
+ continue; /* Address already in list. */
+ ipm = (struct lcs_ipm_list *)
+ kmalloc(sizeof(struct lcs_ipm_list), GFP_ATOMIC);
+ if (ipm == NULL) {
+ PRINT_INFO("Not enough memory to add "
+ "new multicast entry!\n");
+ break;
+ }
+ memset(ipm, 0, sizeof(struct lcs_ipm_list));
+ memcpy(&ipm->ipm.mac_addr, buf, LCS_MAC_LENGTH);
+ ipm->ipm.ip_addr = im4->multiaddr;
+ ipm->ipm_state = LCS_IPM_STATE_SET_REQUIRED;
+ spin_lock_irqsave(&card->ipm_lock, flags);
+ list_add(&ipm->list, &card->ipm_list);
+ spin_unlock_irqrestore(&card->ipm_lock, flags);
+ }
+}
+
+static int
+lcs_register_mc_addresses(void *data)
+{
+ struct lcs_card *card;
+ struct in_device *in4_dev;
+
+ card = (struct lcs_card *) data;
+ daemonize("regipm");
+
+ if (!lcs_do_run_thread(card, LCS_SET_MC_THREAD))
+ return 0;
+ LCS_DBF_TEXT(4, trace, "regmulti");
+
+ in4_dev = in_dev_get(card->dev);
+ if (in4_dev == NULL)
+ goto out;
+ read_lock(&in4_dev->mc_list_lock);
+ lcs_remove_mc_addresses(card,in4_dev);
+ lcs_set_mc_addresses(card, in4_dev);
+ read_unlock(&in4_dev->mc_list_lock);
+ in_dev_put(in4_dev);
+
+ lcs_fix_multicast_list(card);
+out:
+ lcs_clear_thread_running_bit(card, LCS_SET_MC_THREAD);
+ return 0;
+}
+/**
+ * function called by net device to
+ * handle multicast address relevant things
+ */
+static void
+lcs_set_multicast_list(struct net_device *dev)
+{
+ struct lcs_card *card;
+
+ LCS_DBF_TEXT(4, trace, "setmulti");
+ card = (struct lcs_card *) dev->priv;
+
+ if (!lcs_set_thread_start_bit(card, LCS_SET_MC_THREAD)) {
+ schedule_work(&card->kernel_thread_starter);
+ }
+}
+
+#endif /* CONFIG_IP_MULTICAST */
+
+static long
+lcs_check_irb_error(struct ccw_device *cdev, struct irb *irb)
+{
+ if (!IS_ERR(irb))
+ return 0;
+
+ switch (PTR_ERR(irb)) {
+ case -EIO:
+ PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
+ LCS_DBF_TEXT(2, trace, "ckirberr");
+ LCS_DBF_TEXT_(2, trace, " rc%d", -EIO);
+ break;
+ case -ETIMEDOUT:
+ PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
+ LCS_DBF_TEXT(2, trace, "ckirberr");
+ LCS_DBF_TEXT_(2, trace, " rc%d", -ETIMEDOUT);
+ break;
+ default:
+ PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
+ cdev->dev.bus_id);
+ LCS_DBF_TEXT(2, trace, "ckirberr");
+ LCS_DBF_TEXT(2, trace, " rc???");
+ }
+ return PTR_ERR(irb);
+}
+
+
+/**
+ * IRQ Handler for LCS channels
+ */
+static void
+lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
+{
+ struct lcs_card *card;
+ struct lcs_channel *channel;
+ int index;
+
+ if (lcs_check_irb_error(cdev, irb))
+ return;
+
+ card = CARD_FROM_DEV(cdev);
+ if (card->read.ccwdev == cdev)
+ channel = &card->read;
+ else
+ channel = &card->write;
+
+ LCS_DBF_TEXT_(5, trace, "Rint%s",cdev->dev.bus_id);
+ LCS_DBF_TEXT_(5, trace, "%4x%4x",irb->scsw.cstat, irb->scsw.dstat);
+ LCS_DBF_TEXT_(5, trace, "%4x%4x",irb->scsw.fctl, irb->scsw.actl);
+
+ /* How far in the ccw chain have we processed? */
+ if ((channel->state != CH_STATE_INIT) &&
+ (irb->scsw.fctl & SCSW_FCTL_START_FUNC)) {
+ index = (struct ccw1 *) __va((addr_t) irb->scsw.cpa)
+ - channel->ccws;
+ if ((irb->scsw.actl & SCSW_ACTL_SUSPENDED) ||
+ (irb->scsw.cstat | SCHN_STAT_PCI))
+ /* Bloody io subsystem tells us lies about cpa... */
+ index = (index - 1) & (LCS_NUM_BUFFS - 1);
+ while (channel->io_idx != index) {
+ __lcs_processed_buffer(channel,
+ channel->iob + channel->io_idx);
+ channel->io_idx =
+ (channel->io_idx + 1) & (LCS_NUM_BUFFS - 1);
+ }
+ }
+
+ if ((irb->scsw.dstat & DEV_STAT_DEV_END) ||
+ (irb->scsw.dstat & DEV_STAT_CHN_END) ||
+ (irb->scsw.dstat & DEV_STAT_UNIT_CHECK))
+ /* Mark channel as stopped. */
+ channel->state = CH_STATE_STOPPED;
+ else if (irb->scsw.actl & SCSW_ACTL_SUSPENDED)
+ /* CCW execution stopped on a suspend bit. */
+ channel->state = CH_STATE_SUSPENDED;
+
+ if (irb->scsw.fctl & SCSW_FCTL_HALT_FUNC) {
+ if (irb->scsw.cc != 0) {
+ ccw_device_halt(channel->ccwdev, (addr_t) channel);
+ return;
+ }
+ /* The channel has been stopped by halt_IO. */
+ channel->state = CH_STATE_HALTED;
+ }
+
+ if (irb->scsw.fctl & SCSW_FCTL_CLEAR_FUNC) {
+ channel->state = CH_STATE_CLEARED;
+ }
+ /* Do the rest in the tasklet. */
+ tasklet_schedule(&channel->irq_tasklet);
+}
+
+/**
+ * Tasklet for IRQ handler
+ */
+static void
+lcs_tasklet(unsigned long data)
+{
+ unsigned long flags;
+ struct lcs_channel *channel;
+ struct lcs_buffer *iob;
+ int buf_idx;
+ int rc;
+
+ channel = (struct lcs_channel *) data;
+ LCS_DBF_TEXT_(5, trace, "tlet%s",channel->ccwdev->dev.bus_id);
+
+ /* Check for processed buffers. */
+ iob = channel->iob;
+ buf_idx = channel->buf_idx;
+ while (iob[buf_idx].state == BUF_STATE_PROCESSED) {
+ /* Do the callback thing. */
+ if (iob[buf_idx].callback != NULL)
+ iob[buf_idx].callback(channel, iob + buf_idx);
+ buf_idx = (buf_idx + 1) & (LCS_NUM_BUFFS - 1);
+ }
+ channel->buf_idx = buf_idx;
+
+ if (channel->state == CH_STATE_STOPPED)
+ // FIXME: what if rc != 0 ??
+ rc = lcs_start_channel(channel);
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ if (channel->state == CH_STATE_SUSPENDED &&
+ channel->iob[channel->io_idx].state == BUF_STATE_READY) {
+ // FIXME: what if rc != 0 ??
+ rc = __lcs_resume_channel(channel);
+ }
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+
+ /* Something happened on the channel. Wake up waiters. */
+ wake_up(&channel->wait_q);
+}
+
+/**
+ * Finish current tx buffer and make it ready for transmit.
+ */
+static void
+__lcs_emit_txbuffer(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(5, trace, "emittx");
+ *(__u16 *)(card->tx_buffer->data + card->tx_buffer->count) = 0;
+ card->tx_buffer->count += 2;
+ lcs_ready_buffer(&card->write, card->tx_buffer);
+ card->tx_buffer = NULL;
+ card->tx_emitted++;
+}
+
+/**
+ * Callback for finished tx buffers.
+ */
+static void
+lcs_txbuffer_cb(struct lcs_channel *channel, struct lcs_buffer *buffer)
+{
+ struct lcs_card *card;
+
+ LCS_DBF_TEXT(5, trace, "txbuffcb");
+ /* Put buffer back to pool. */
+ lcs_release_buffer(channel, buffer);
+ card = (struct lcs_card *)
+ ((char *) channel - offsetof(struct lcs_card, write));
+ spin_lock(&card->lock);
+ card->tx_emitted--;
+ if (card->tx_emitted <= 0 && card->tx_buffer != NULL)
+ /*
+ * Last running tx buffer has finished. Submit partially
+ * filled current buffer.
+ */
+ __lcs_emit_txbuffer(card);
+ spin_unlock(&card->lock);
+}
+
+/**
+ * Packet transmit function called by network stack
+ */
+static int
+__lcs_start_xmit(struct lcs_card *card, struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct lcs_header *header;
+
+ LCS_DBF_TEXT(5, trace, "hardxmit");
+ if (skb == NULL) {
+ card->stats.tx_dropped++;
+ card->stats.tx_errors++;
+ return -EIO;
+ }
+ if (card->state != DEV_STATE_UP) {
+ dev_kfree_skb(skb);
+ card->stats.tx_dropped++;
+ card->stats.tx_errors++;
+ card->stats.tx_carrier_errors++;
+ return 0;
+ }
+ if (netif_queue_stopped(dev) ) {
+ card->stats.tx_dropped++;
+ return -EBUSY;
+ }
+ if (card->tx_buffer != NULL &&
+ card->tx_buffer->count + sizeof(struct lcs_header) +
+ skb->len + sizeof(u16) > LCS_IOBUFFERSIZE)
+ /* skb too big for current tx buffer. */
+ __lcs_emit_txbuffer(card);
+ if (card->tx_buffer == NULL) {
+ /* Get new tx buffer */
+ card->tx_buffer = lcs_get_buffer(&card->write);
+ if (card->tx_buffer == NULL) {
+ card->stats.tx_dropped++;
+ return -EBUSY;
+ }
+ card->tx_buffer->callback = lcs_txbuffer_cb;
+ card->tx_buffer->count = 0;
+ }
+ header = (struct lcs_header *)
+ (card->tx_buffer->data + card->tx_buffer->count);
+ card->tx_buffer->count += skb->len + sizeof(struct lcs_header);
+ header->offset = card->tx_buffer->count;
+ header->type = card->lan_type;
+ header->slot = card->portno;
+ memcpy(header + 1, skb->data, skb->len);
+ card->stats.tx_bytes += skb->len;
+ card->stats.tx_packets++;
+ dev_kfree_skb(skb);
+ if (card->tx_emitted <= 0)
+ /* If this is the first tx buffer emit it immediately. */
+ __lcs_emit_txbuffer(card);
+ return 0;
+}
+
+static int
+lcs_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct lcs_card *card;
+ int rc;
+
+ LCS_DBF_TEXT(5, trace, "pktxmit");
+ card = (struct lcs_card *) dev->priv;
+ spin_lock(&card->lock);
+ rc = __lcs_start_xmit(card, skb, dev);
+ spin_unlock(&card->lock);
+ return rc;
+}
+
+/**
+ * send startlan and lanstat command to make LCS device ready
+ */
+static int
+lcs_startlan_auto(struct lcs_card *card)
+{
+ int rc;
+
+ LCS_DBF_TEXT(2, trace, "strtauto");
+#ifdef CONFIG_NET_ETHERNET
+ card->lan_type = LCS_FRAME_TYPE_ENET;
+ rc = lcs_send_startlan(card, LCS_INITIATOR_TCPIP);
+ if (rc == 0)
+ return 0;
+
+#endif
+#ifdef CONFIG_TR
+ card->lan_type = LCS_FRAME_TYPE_TR;
+ rc = lcs_send_startlan(card, LCS_INITIATOR_TCPIP);
+ if (rc == 0)
+ return 0;
+#endif
+#ifdef CONFIG_FDDI
+ card->lan_type = LCS_FRAME_TYPE_FDDI;
+ rc = lcs_send_startlan(card, LCS_INITIATOR_TCPIP);
+ if (rc == 0)
+ return 0;
+#endif
+ return -EIO;
+}
+
+static int
+lcs_startlan(struct lcs_card *card)
+{
+ int rc, i;
+
+ LCS_DBF_TEXT(2, trace, "startlan");
+ rc = 0;
+ if (card->portno != LCS_INVALID_PORT_NO) {
+ if (card->lan_type == LCS_FRAME_TYPE_AUTO)
+ rc = lcs_startlan_auto(card);
+ else
+ rc = lcs_send_startlan(card, LCS_INITIATOR_TCPIP);
+ } else {
+ for (i = 0; i <= 16; i++) {
+ card->portno = i;
+ if (card->lan_type != LCS_FRAME_TYPE_AUTO)
+ rc = lcs_send_startlan(card,
+ LCS_INITIATOR_TCPIP);
+ else
+ /* autodetecting lan type */
+ rc = lcs_startlan_auto(card);
+ if (rc == 0)
+ break;
+ }
+ }
+ if (rc == 0)
+ return lcs_send_lanstat(card);
+ return rc;
+}
+
+/**
+ * LCS detect function
+ * setup channels and make them I/O ready
+ */
+static int
+lcs_detect(struct lcs_card *card)
+{
+ int rc = 0;
+
+ LCS_DBF_TEXT(2, setup, "lcsdetct");
+ /* start/reset card */
+ if (card->dev)
+ netif_stop_queue(card->dev);
+ rc = lcs_stop_channels(card);
+ if (rc == 0) {
+ rc = lcs_start_channels(card);
+ if (rc == 0) {
+ rc = lcs_send_startup(card, LCS_INITIATOR_TCPIP);
+ if (rc == 0)
+ rc = lcs_startlan(card);
+ }
+ }
+ if (rc == 0) {
+ card->state = DEV_STATE_UP;
+ } else {
+ card->state = DEV_STATE_DOWN;
+ card->write.state = CH_STATE_INIT;
+ card->read.state = CH_STATE_INIT;
+ }
+ return rc;
+}
+
+/**
+ * reset card
+ */
+static int
+lcs_resetcard(struct lcs_card *card)
+{
+ int retries;
+
+ LCS_DBF_TEXT(2, trace, "rescard");
+ for (retries = 0; retries < 10; retries++) {
+ if (lcs_detect(card) == 0) {
+ netif_wake_queue(card->dev);
+ card->state = DEV_STATE_UP;
+ PRINT_INFO("LCS device %s successfully restarted!\n",
+ card->dev->name);
+ return 0;
+ }
+ msleep(3000);
+ }
+ PRINT_ERR("Error in Reseting LCS card!\n");
+ return -EIO;
+}
+
+
+/**
+ * LCS Stop card
+ */
+static int
+lcs_stopcard(struct lcs_card *card)
+{
+ int rc;
+
+ LCS_DBF_TEXT(3, setup, "stopcard");
+
+ if (card->read.state != CH_STATE_STOPPED &&
+ card->write.state != CH_STATE_STOPPED &&
+ card->state == DEV_STATE_UP) {
+ lcs_clear_multicast_list(card);
+ rc = lcs_send_stoplan(card,LCS_INITIATOR_TCPIP);
+ rc = lcs_send_shutdown(card);
+ }
+ rc = lcs_stop_channels(card);
+ card->state = DEV_STATE_DOWN;
+
+ return rc;
+}
+
+/**
+ * LGW initiated commands
+ */
+static int
+lcs_lgw_startlan_thread(void *data)
+{
+ struct lcs_card *card;
+
+ card = (struct lcs_card *) data;
+ daemonize("lgwstpln");
+
+ if (!lcs_do_run_thread(card, LCS_STARTLAN_THREAD))
+ return 0;
+ LCS_DBF_TEXT(4, trace, "lgwstpln");
+ if (card->dev)
+ netif_stop_queue(card->dev);
+ if (lcs_startlan(card) == 0) {
+ netif_wake_queue(card->dev);
+ card->state = DEV_STATE_UP;
+ PRINT_INFO("LCS Startlan for device %s succeeded!\n",
+ card->dev->name);
+
+ } else
+ PRINT_ERR("LCS Startlan for device %s failed!\n",
+ card->dev->name);
+ lcs_clear_thread_running_bit(card, LCS_STARTLAN_THREAD);
+ return 0;
+}
+
+/**
+ * Send startup command initiated by Lan Gateway
+ */
+static int
+lcs_lgw_startup_thread(void *data)
+{
+ int rc;
+
+ struct lcs_card *card;
+
+ card = (struct lcs_card *) data;
+ daemonize("lgwstaln");
+
+ if (!lcs_do_run_thread(card, LCS_STARTUP_THREAD))
+ return 0;
+ LCS_DBF_TEXT(4, trace, "lgwstaln");
+ if (card->dev)
+ netif_stop_queue(card->dev);
+ rc = lcs_send_startup(card, LCS_INITIATOR_LGW);
+ if (rc != 0) {
+ PRINT_ERR("Startup for LCS device %s initiated " \
+ "by LGW failed!\nReseting card ...\n",
+ card->dev->name);
+ /* do a card reset */
+ rc = lcs_resetcard(card);
+ if (rc == 0)
+ goto Done;
+ }
+ rc = lcs_startlan(card);
+ if (rc == 0) {
+ netif_wake_queue(card->dev);
+ card->state = DEV_STATE_UP;
+ }
+Done:
+ if (rc == 0)
+ PRINT_INFO("LCS Startup for device %s succeeded!\n",
+ card->dev->name);
+ else
+ PRINT_ERR("LCS Startup for device %s failed!\n",
+ card->dev->name);
+ lcs_clear_thread_running_bit(card, LCS_STARTUP_THREAD);
+ return 0;
+}
+
+
+/**
+ * send stoplan command initiated by Lan Gateway
+ */
+static int
+lcs_lgw_stoplan_thread(void *data)
+{
+ struct lcs_card *card;
+ int rc;
+
+ card = (struct lcs_card *) data;
+ daemonize("lgwstop");
+
+ if (!lcs_do_run_thread(card, LCS_STOPLAN_THREAD))
+ return 0;
+ LCS_DBF_TEXT(4, trace, "lgwstop");
+ if (card->dev)
+ netif_stop_queue(card->dev);
+ if (lcs_send_stoplan(card, LCS_INITIATOR_LGW) == 0)
+ PRINT_INFO("Stoplan for %s initiated by LGW succeeded!\n",
+ card->dev->name);
+ else
+ PRINT_ERR("Stoplan %s initiated by LGW failed!\n",
+ card->dev->name);
+ /*Try to reset the card, stop it on failure */
+ rc = lcs_resetcard(card);
+ if (rc != 0)
+ rc = lcs_stopcard(card);
+ lcs_clear_thread_running_bit(card, LCS_STOPLAN_THREAD);
+ return rc;
+}
+
+/**
+ * Kernel Thread helper functions for LGW initiated commands
+ */
+static void
+lcs_start_kernel_thread(struct lcs_card *card)
+{
+ LCS_DBF_TEXT(5, trace, "krnthrd");
+ if (lcs_do_start_thread(card, LCS_STARTUP_THREAD))
+ kernel_thread(lcs_lgw_startup_thread, (void *) card, SIGCHLD);
+ if (lcs_do_start_thread(card, LCS_STARTLAN_THREAD))
+ kernel_thread(lcs_lgw_startlan_thread, (void *) card, SIGCHLD);
+ if (lcs_do_start_thread(card, LCS_STOPLAN_THREAD))
+ kernel_thread(lcs_lgw_stoplan_thread, (void *) card, SIGCHLD);
+#ifdef CONFIG_IP_MULTICAST
+ if (lcs_do_start_thread(card, LCS_SET_MC_THREAD))
+ kernel_thread(lcs_register_mc_addresses, (void *) card, SIGCHLD);
+#endif
+}
+
+/**
+ * Process control frames.
+ */
+static void
+lcs_get_control(struct lcs_card *card, struct lcs_cmd *cmd)
+{
+ LCS_DBF_TEXT(5, trace, "getctrl");
+ if (cmd->initiator == LCS_INITIATOR_LGW) {
+ switch(cmd->cmd_code) {
+ case LCS_CMD_STARTUP:
+ if (!lcs_set_thread_start_bit(card,
+ LCS_STARTUP_THREAD))
+ schedule_work(&card->kernel_thread_starter);
+ break;
+ case LCS_CMD_STARTLAN:
+ if (!lcs_set_thread_start_bit(card,
+ LCS_STARTLAN_THREAD))
+ schedule_work(&card->kernel_thread_starter);
+ break;
+ case LCS_CMD_STOPLAN:
+ if (!lcs_set_thread_start_bit(card,
+ LCS_STOPLAN_THREAD))
+ schedule_work(&card->kernel_thread_starter);
+ break;
+ default:
+ PRINT_INFO("UNRECOGNIZED LGW COMMAND\n");
+ break;
+ }
+ } else
+ lcs_notify_lancmd_waiters(card, cmd);
+}
+
+/**
+ * Unpack network packet.
+ */
+static void
+lcs_get_skb(struct lcs_card *card, char *skb_data, unsigned int skb_len)
+{
+ struct sk_buff *skb;
+
+ LCS_DBF_TEXT(5, trace, "getskb");
+ if (card->dev == NULL ||
+ card->state != DEV_STATE_UP)
+ /* The card isn't up. Ignore the packet. */
+ return;
+
+ skb = dev_alloc_skb(skb_len);
+ if (skb == NULL) {
+ PRINT_ERR("LCS: alloc_skb failed for device=%s\n",
+ card->dev->name);
+ card->stats.rx_dropped++;
+ return;
+ }
+ skb->dev = card->dev;
+ memcpy(skb_put(skb, skb_len), skb_data, skb_len);
+ skb->protocol = card->lan_type_trans(skb, card->dev);
+ card->stats.rx_bytes += skb_len;
+ card->stats.rx_packets++;
+ *((__u32 *)skb->cb) = ++card->pkt_seq;
+ netif_rx(skb);
+}
+
+/**
+ * LCS main routine to get packets and lancmd replies from the buffers
+ */
+static void
+lcs_get_frames_cb(struct lcs_channel *channel, struct lcs_buffer *buffer)
+{
+ struct lcs_card *card;
+ struct lcs_header *lcs_hdr;
+ __u16 offset;
+
+ LCS_DBF_TEXT(5, trace, "lcsgtpkt");
+ lcs_hdr = (struct lcs_header *) buffer->data;
+ if (lcs_hdr->offset == LCS_ILLEGAL_OFFSET) {
+ LCS_DBF_TEXT(4, trace, "-eiogpkt");
+ return;
+ }
+ card = (struct lcs_card *)
+ ((char *) channel - offsetof(struct lcs_card, read));
+ offset = 0;
+ while (lcs_hdr->offset != 0) {
+ if (lcs_hdr->offset <= 0 ||
+ lcs_hdr->offset > LCS_IOBUFFERSIZE ||
+ lcs_hdr->offset < offset) {
+ /* Offset invalid. */
+ card->stats.rx_length_errors++;
+ card->stats.rx_errors++;
+ return;
+ }
+ /* What kind of frame is it? */
+ if (lcs_hdr->type == LCS_FRAME_TYPE_CONTROL)
+ /* Control frame. */
+ lcs_get_control(card, (struct lcs_cmd *) lcs_hdr);
+ else if (lcs_hdr->type == LCS_FRAME_TYPE_ENET ||
+ lcs_hdr->type == LCS_FRAME_TYPE_TR ||
+ lcs_hdr->type == LCS_FRAME_TYPE_FDDI)
+ /* Normal network packet. */
+ lcs_get_skb(card, (char *)(lcs_hdr + 1),
+ lcs_hdr->offset - offset -
+ sizeof(struct lcs_header));
+ else
+ /* Unknown frame type. */
+ ; // FIXME: error message ?
+ /* Proceed to next frame. */
+ offset = lcs_hdr->offset;
+ lcs_hdr->offset = LCS_ILLEGAL_OFFSET;
+ lcs_hdr = (struct lcs_header *) (buffer->data + offset);
+ }
+ /* The buffer is now empty. Make it ready again. */
+ lcs_ready_buffer(&card->read, buffer);
+}
+
+/**
+ * get network statistics for ifconfig and other user programs
+ */
+static struct net_device_stats *
+lcs_getstats(struct net_device *dev)
+{
+ struct lcs_card *card;
+
+ LCS_DBF_TEXT(4, trace, "netstats");
+ card = (struct lcs_card *) dev->priv;
+ return &card->stats;
+}
+
+/**
+ * stop lcs device
+ * This function will be called by user doing ifconfig xxx down
+ */
+static int
+lcs_stop_device(struct net_device *dev)
+{
+ struct lcs_card *card;
+ int rc;
+
+ LCS_DBF_TEXT(2, trace, "stopdev");
+ card = (struct lcs_card *) dev->priv;
+ netif_stop_queue(dev);
+ dev->flags &= ~IFF_UP;
+ rc = lcs_stopcard(card);
+ if (rc)
+ PRINT_ERR("Try it again!\n ");
+ return rc;
+}
+
+/**
+ * start lcs device and make it runnable
+ * This function will be called by user doing ifconfig xxx up
+ */
+static int
+lcs_open_device(struct net_device *dev)
+{
+ struct lcs_card *card;
+ int rc;
+
+ LCS_DBF_TEXT(2, trace, "opendev");
+ card = (struct lcs_card *) dev->priv;
+ /* initialize statistics */
+ rc = lcs_detect(card);
+ if (rc) {
+ PRINT_ERR("LCS:Error in opening device!\n");
+
+ } else {
+ dev->flags |= IFF_UP;
+ netif_wake_queue(dev);
+ card->state = DEV_STATE_UP;
+ }
+ return rc;
+}
+
+/**
+ * show function for portno called by cat or similar things
+ */
+static ssize_t
+lcs_portno_show (struct device *dev, char *buf)
+{
+ struct lcs_card *card;
+
+ card = (struct lcs_card *)dev->driver_data;
+
+ if (!card)
+ return 0;
+
+ return sprintf(buf, "%d\n", card->portno);
+}
+
+/**
+ * store the value which is piped to file portno
+ */
+static ssize_t
+lcs_portno_store (struct device *dev, const char *buf, size_t count)
+{
+ struct lcs_card *card;
+ int value;
+
+ card = (struct lcs_card *)dev->driver_data;
+
+ if (!card)
+ return 0;
+
+ sscanf(buf, "%u", &value);
+ /* TODO: sanity checks */
+ card->portno = value;
+
+ return count;
+
+}
+
+static DEVICE_ATTR(portno, 0644, lcs_portno_show, lcs_portno_store);
+
+static ssize_t
+lcs_type_show(struct device *dev, char *buf)
+{
+ struct ccwgroup_device *cgdev;
+
+ cgdev = to_ccwgroupdev(dev);
+ if (!cgdev)
+ return -ENODEV;
+
+ return sprintf(buf, "%s\n", cu3088_type[cgdev->cdev[0]->id.driver_info]);
+}
+
+static DEVICE_ATTR(type, 0444, lcs_type_show, NULL);
+
+static ssize_t
+lcs_timeout_show(struct device *dev, char *buf)
+{
+ struct lcs_card *card;
+
+ card = (struct lcs_card *)dev->driver_data;
+
+ return card ? sprintf(buf, "%u\n", card->lancmd_timeout) : 0;
+}
+
+static ssize_t
+lcs_timeout_store (struct device *dev, const char *buf, size_t count)
+{
+ struct lcs_card *card;
+ int value;
+
+ card = (struct lcs_card *)dev->driver_data;
+
+ if (!card)
+ return 0;
+
+ sscanf(buf, "%u", &value);
+ /* TODO: sanity checks */
+ card->lancmd_timeout = value;
+
+ return count;
+
+}
+
+DEVICE_ATTR(lancmd_timeout, 0644, lcs_timeout_show, lcs_timeout_store);
+
+static struct attribute * lcs_attrs[] = {
+ &dev_attr_portno.attr,
+ &dev_attr_type.attr,
+ &dev_attr_lancmd_timeout.attr,
+ NULL,
+};
+
+static struct attribute_group lcs_attr_group = {
+ .attrs = lcs_attrs,
+};
+
+/**
+ * lcs_probe_device is called on establishing a new ccwgroup_device.
+ */
+static int
+lcs_probe_device(struct ccwgroup_device *ccwgdev)
+{
+ struct lcs_card *card;
+ int ret;
+
+ if (!get_device(&ccwgdev->dev))
+ return -ENODEV;
+
+ LCS_DBF_TEXT(2, setup, "add_dev");
+ card = lcs_alloc_card();
+ if (!card) {
+ PRINT_ERR("Allocation of lcs card failed\n");
+ put_device(&ccwgdev->dev);
+ return -ENOMEM;
+ }
+ ret = sysfs_create_group(&ccwgdev->dev.kobj, &lcs_attr_group);
+ if (ret) {
+ PRINT_ERR("Creating attributes failed");
+ lcs_free_card(card);
+ put_device(&ccwgdev->dev);
+ return ret;
+ }
+ ccwgdev->dev.driver_data = card;
+ ccwgdev->cdev[0]->handler = lcs_irq;
+ ccwgdev->cdev[1]->handler = lcs_irq;
+ return 0;
+}
+
+static int
+lcs_register_netdev(struct ccwgroup_device *ccwgdev)
+{
+ struct lcs_card *card;
+
+ LCS_DBF_TEXT(2, setup, "regnetdv");
+ card = (struct lcs_card *)ccwgdev->dev.driver_data;
+ if (card->dev->reg_state != NETREG_UNINITIALIZED)
+ return 0;
+ SET_NETDEV_DEV(card->dev, &ccwgdev->dev);
+ return register_netdev(card->dev);
+}
+
+/**
+ * lcs_new_device will be called by setting the group device online.
+ */
+
+static int
+lcs_new_device(struct ccwgroup_device *ccwgdev)
+{
+ struct lcs_card *card;
+ struct net_device *dev=NULL;
+ enum lcs_dev_states recover_state;
+ int rc;
+
+ card = (struct lcs_card *)ccwgdev->dev.driver_data;
+ if (!card)
+ return -ENODEV;
+
+ LCS_DBF_TEXT(2, setup, "newdev");
+ LCS_DBF_HEX(3, setup, &card, sizeof(void*));
+ card->read.ccwdev = ccwgdev->cdev[0];
+ card->write.ccwdev = ccwgdev->cdev[1];
+
+ recover_state = card->state;
+ ccw_device_set_online(card->read.ccwdev);
+ ccw_device_set_online(card->write.ccwdev);
+
+ LCS_DBF_TEXT(3, setup, "lcsnewdv");
+
+ lcs_setup_card(card);
+ rc = lcs_detect(card);
+ if (rc) {
+ LCS_DBF_TEXT(2, setup, "dtctfail");
+ PRINT_WARN("Detection of LCS card failed with return code "
+ "%d (0x%x)\n", rc, rc);
+ lcs_stopcard(card);
+ goto out;
+ }
+ if (card->dev) {
+ LCS_DBF_TEXT(2, setup, "samedev");
+ LCS_DBF_HEX(3, setup, &card, sizeof(void*));
+ goto netdev_out;
+ }
+ switch (card->lan_type) {
+#ifdef CONFIG_NET_ETHERNET
+ case LCS_FRAME_TYPE_ENET:
+ card->lan_type_trans = eth_type_trans;
+ dev = alloc_etherdev(0);
+ break;
+#endif
+#ifdef CONFIG_TR
+ case LCS_FRAME_TYPE_TR:
+ card->lan_type_trans = tr_type_trans;
+ dev = alloc_trdev(0);
+ break;
+#endif
+#ifdef CONFIG_FDDI
+ case LCS_FRAME_TYPE_FDDI:
+ card->lan_type_trans = fddi_type_trans;
+ dev = alloc_fddidev(0);
+ break;
+#endif
+ default:
+ LCS_DBF_TEXT(3, setup, "errinit");
+ PRINT_ERR("LCS: Initialization failed\n");
+ PRINT_ERR("LCS: No device found!\n");
+ goto out;
+ }
+ if (!dev)
+ goto out;
+ card->dev = dev;
+netdev_out:
+ card->dev->priv = card;
+ card->dev->open = lcs_open_device;
+ card->dev->stop = lcs_stop_device;
+ card->dev->hard_start_xmit = lcs_start_xmit;
+ card->dev->get_stats = lcs_getstats;
+ SET_MODULE_OWNER(dev);
+ if (lcs_register_netdev(ccwgdev) != 0)
+ goto out;
+ memcpy(card->dev->dev_addr, card->mac, LCS_MAC_LENGTH);
+#ifdef CONFIG_IP_MULTICAST
+ if (!lcs_check_multicast_support(card))
+ card->dev->set_multicast_list = lcs_set_multicast_list;
+#endif
+ netif_stop_queue(card->dev);
+ lcs_set_allowed_threads(card,0xffffffff);
+ if (recover_state == DEV_STATE_RECOVER) {
+ lcs_set_multicast_list(card->dev);
+ card->dev->flags |= IFF_UP;
+ netif_wake_queue(card->dev);
+ card->state = DEV_STATE_UP;
+ } else
+ lcs_stopcard(card);
+
+ return 0;
+out:
+
+ ccw_device_set_offline(card->read.ccwdev);
+ ccw_device_set_offline(card->write.ccwdev);
+ return -ENODEV;
+}
+
+/**
+ * lcs_shutdown_device, called when setting the group device offline.
+ */
+static int
+lcs_shutdown_device(struct ccwgroup_device *ccwgdev)
+{
+ struct lcs_card *card;
+ enum lcs_dev_states recover_state;
+ int ret;
+
+ LCS_DBF_TEXT(3, setup, "shtdndev");
+ card = (struct lcs_card *)ccwgdev->dev.driver_data;
+ if (!card)
+ return -ENODEV;
+ lcs_set_allowed_threads(card, 0);
+ if (lcs_wait_for_threads(card, LCS_SET_MC_THREAD))
+ return -ERESTARTSYS;
+ LCS_DBF_HEX(3, setup, &card, sizeof(void*));
+ recover_state = card->state;
+
+ ret = lcs_stop_device(card->dev);
+ ret = ccw_device_set_offline(card->read.ccwdev);
+ ret = ccw_device_set_offline(card->write.ccwdev);
+ if (recover_state == DEV_STATE_UP) {
+ card->state = DEV_STATE_RECOVER;
+ }
+ if (ret)
+ return ret;
+ return 0;
+}
+
+/**
+ * lcs_remove_device, free buffers and card
+ */
+static void
+lcs_remove_device(struct ccwgroup_device *ccwgdev)
+{
+ struct lcs_card *card;
+
+ card = (struct lcs_card *)ccwgdev->dev.driver_data;
+ if (!card)
+ return;
+
+ PRINT_INFO("Removing lcs group device ....\n");
+ LCS_DBF_TEXT(3, setup, "remdev");
+ LCS_DBF_HEX(3, setup, &card, sizeof(void*));
+ if (ccwgdev->state == CCWGROUP_ONLINE) {
+ lcs_shutdown_device(ccwgdev);
+ }
+ if (card->dev)
+ unregister_netdev(card->dev);
+ sysfs_remove_group(&ccwgdev->dev.kobj, &lcs_attr_group);
+ lcs_cleanup_card(card);
+ lcs_free_card(card);
+ put_device(&ccwgdev->dev);
+}
+
+/**
+ * LCS ccwgroup driver registration
+ */
+static struct ccwgroup_driver lcs_group_driver = {
+ .owner = THIS_MODULE,
+ .name = "lcs",
+ .max_slaves = 2,
+ .driver_id = 0xD3C3E2,
+ .probe = lcs_probe_device,
+ .remove = lcs_remove_device,
+ .set_online = lcs_new_device,
+ .set_offline = lcs_shutdown_device,
+};
+
+/**
+ * LCS Module/Kernel initialization function
+ */
+static int
+__init lcs_init_module(void)
+{
+ int rc;
+
+ PRINT_INFO("Loading %s\n",version);
+ rc = lcs_register_debug_facility();
+ LCS_DBF_TEXT(0, setup, "lcsinit");
+ if (rc) {
+ PRINT_ERR("Initialization failed\n");
+ return rc;
+ }
+
+ rc = register_cu3088_discipline(&lcs_group_driver);
+ if (rc) {
+ PRINT_ERR("Initialization failed\n");
+ return rc;
+ }
+
+ return 0;
+}
+
+
+/**
+ * LCS module cleanup function
+ */
+static void
+__exit lcs_cleanup_module(void)
+{
+ PRINT_INFO("Terminating lcs module.\n");
+ LCS_DBF_TEXT(0, trace, "cleanup");
+ unregister_cu3088_discipline(&lcs_group_driver);
+ lcs_unregister_debug_facility();
+}
+
+module_init(lcs_init_module);
+module_exit(lcs_cleanup_module);
+
+MODULE_AUTHOR("Frank Pavlic <pavlic@de.ibm.com>");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h
new file mode 100644
index 0000000..a7f348e
--- /dev/null
+++ b/drivers/s390/net/lcs.h
@@ -0,0 +1,321 @@
+/*lcs.h*/
+
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+#include <asm/ccwdev.h>
+
+#define VERSION_LCS_H "$Revision: 1.19 $"
+
+#define LCS_DBF_TEXT(level, name, text) \
+ do { \
+ debug_text_event(lcs_dbf_##name, level, text); \
+ } while (0)
+
+#define LCS_DBF_HEX(level,name,addr,len) \
+do { \
+ debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
+} while (0)
+
+#define LCS_DBF_TEXT_(level,name,text...) \
+do { \
+ sprintf(debug_buffer, text); \
+ debug_text_event(lcs_dbf_##name,level, debug_buffer);\
+} while (0)
+
+/**
+ * some more definitions for debug or output stuff
+ */
+#define PRINTK_HEADER " lcs: "
+
+/**
+ * sysfs related stuff
+ */
+#define CARD_FROM_DEV(cdev) \
+ (struct lcs_card *) \
+ ((struct ccwgroup_device *)cdev->dev.driver_data)->dev.driver_data;
+/**
+ * CCW commands used in this driver
+ */
+#define LCS_CCW_WRITE 0x01
+#define LCS_CCW_READ 0x02
+#define LCS_CCW_TRANSFER 0x08
+
+/**
+ * LCS device status primitives
+ */
+#define LCS_CMD_STARTLAN 0x01
+#define LCS_CMD_STOPLAN 0x02
+#define LCS_CMD_LANSTAT 0x04
+#define LCS_CMD_STARTUP 0x07
+#define LCS_CMD_SHUTDOWN 0x08
+#define LCS_CMD_QIPASSIST 0xb2
+#define LCS_CMD_SETIPM 0xb4
+#define LCS_CMD_DELIPM 0xb5
+
+#define LCS_INITIATOR_TCPIP 0x00
+#define LCS_INITIATOR_LGW 0x01
+#define LCS_STD_CMD_SIZE 16
+#define LCS_MULTICAST_CMD_SIZE 404
+
+/**
+ * LCS IPASSIST MASKS,only used when multicast is switched on
+ */
+/* Not supported by LCS */
+#define LCS_IPASS_ARP_PROCESSING 0x0001
+#define LCS_IPASS_IN_CHECKSUM_SUPPORT 0x0002
+#define LCS_IPASS_OUT_CHECKSUM_SUPPORT 0x0004
+#define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008
+#define LCS_IPASS_IP_FILTERING 0x0010
+/* Supported by lcs 3172 */
+#define LCS_IPASS_IPV6_SUPPORT 0x0020
+#define LCS_IPASS_MULTICAST_SUPPORT 0x0040
+
+/**
+ * LCS sense byte definitions
+ */
+#define LCS_SENSE_INTERFACE_DISCONNECT 0x01
+#define LCS_SENSE_EQUIPMENT_CHECK 0x10
+#define LCS_SENSE_BUS_OUT_CHECK 0x20
+#define LCS_SENSE_INTERVENTION_REQUIRED 0x40
+#define LCS_SENSE_CMD_REJECT 0x80
+#define LCS_SENSE_RESETTING_EVENT 0x0080
+#define LCS_SENSE_DEVICE_ONLINE 0x0020
+
+/**
+ * LCS packet type definitions
+ */
+#define LCS_FRAME_TYPE_CONTROL 0
+#define LCS_FRAME_TYPE_ENET 1
+#define LCS_FRAME_TYPE_TR 2
+#define LCS_FRAME_TYPE_FDDI 7
+#define LCS_FRAME_TYPE_AUTO -1
+
+/**
+ * some more definitions,we will sort them later
+ */
+#define LCS_ILLEGAL_OFFSET 0xffff
+#define LCS_IOBUFFERSIZE 0x5000
+#define LCS_NUM_BUFFS 8 /* needs to be power of 2 */
+#define LCS_MAC_LENGTH 6
+#define LCS_INVALID_PORT_NO -1
+#define LCS_LANCMD_TIMEOUT_DEFAULT 5
+
+/**
+ * Multicast state
+ */
+#define LCS_IPM_STATE_SET_REQUIRED 0
+#define LCS_IPM_STATE_DEL_REQUIRED 1
+#define LCS_IPM_STATE_ON_CARD 2
+
+/**
+ * LCS IP Assist declarations
+ * seems to be only used for multicast
+ */
+#define LCS_IPASS_ARP_PROCESSING 0x0001
+#define LCS_IPASS_INBOUND_CSUM_SUPP 0x0002
+#define LCS_IPASS_OUTBOUND_CSUM_SUPP 0x0004
+#define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008
+#define LCS_IPASS_IP_FILTERING 0x0010
+#define LCS_IPASS_IPV6_SUPPORT 0x0020
+#define LCS_IPASS_MULTICAST_SUPPORT 0x0040
+
+/**
+ * LCS Buffer states
+ */
+enum lcs_buffer_states {
+ BUF_STATE_EMPTY, /* buffer is empty */
+ BUF_STATE_LOCKED, /* buffer is locked, don't touch */
+ BUF_STATE_READY, /* buffer is ready for read/write */
+ BUF_STATE_PROCESSED,
+};
+
+/**
+ * LCS Channel State Machine declarations
+ */
+enum lcs_channel_states {
+ CH_STATE_INIT,
+ CH_STATE_HALTED,
+ CH_STATE_STOPPED,
+ CH_STATE_RUNNING,
+ CH_STATE_SUSPENDED,
+ CH_STATE_CLEARED,
+};
+
+/**
+ * LCS device state machine
+ */
+enum lcs_dev_states {
+ DEV_STATE_DOWN,
+ DEV_STATE_UP,
+ DEV_STATE_RECOVER,
+};
+
+enum lcs_threads {
+ LCS_SET_MC_THREAD = 1,
+ LCS_STARTLAN_THREAD = 2,
+ LCS_STOPLAN_THREAD = 4,
+ LCS_STARTUP_THREAD = 8,
+};
+/**
+ * LCS struct declarations
+ */
+struct lcs_header {
+ __u16 offset;
+ __u8 type;
+ __u8 slot;
+} __attribute__ ((packed));
+
+struct lcs_ip_mac_pair {
+ __u32 ip_addr;
+ __u8 mac_addr[LCS_MAC_LENGTH];
+ __u8 reserved[2];
+} __attribute__ ((packed));
+
+struct lcs_ipm_list {
+ struct list_head list;
+ struct lcs_ip_mac_pair ipm;
+ __u8 ipm_state;
+};
+
+struct lcs_cmd {
+ __u16 offset;
+ __u8 type;
+ __u8 slot;
+ __u8 cmd_code;
+ __u8 initiator;
+ __u16 sequence_no;
+ __u16 return_code;
+ union {
+ struct {
+ __u8 lan_type;
+ __u8 portno;
+ __u16 parameter_count;
+ __u8 operator_flags[3];
+ __u8 reserved[3];
+ } lcs_std_cmd;
+ struct {
+ __u16 unused1;
+ __u16 buff_size;
+ __u8 unused2[6];
+ } lcs_startup;
+ struct {
+ __u8 lan_type;
+ __u8 portno;
+ __u8 unused[10];
+ __u8 mac_addr[LCS_MAC_LENGTH];
+ __u32 num_packets_deblocked;
+ __u32 num_packets_blocked;
+ __u32 num_packets_tx_on_lan;
+ __u32 num_tx_errors_detected;
+ __u32 num_tx_packets_disgarded;
+ __u32 num_packets_rx_from_lan;
+ __u32 num_rx_errors_detected;
+ __u32 num_rx_discarded_nobuffs_avail;
+ __u32 num_rx_packets_too_large;
+ } lcs_lanstat_cmd;
+#ifdef CONFIG_IP_MULTICAST
+ struct {
+ __u8 lan_type;
+ __u8 portno;
+ __u16 num_ip_pairs;
+ __u16 ip_assists_supported;
+ __u16 ip_assists_enabled;
+ __u16 version;
+ struct {
+ struct lcs_ip_mac_pair
+ ip_mac_pair[32];
+ __u32 response_data;
+ } lcs_ipass_ctlmsg __attribute ((packed));
+ } lcs_qipassist __attribute__ ((packed));
+#endif /*CONFIG_IP_MULTICAST */
+ } cmd __attribute__ ((packed));
+} __attribute__ ((packed));
+
+/**
+ * Forward declarations.
+ */
+struct lcs_card;
+struct lcs_channel;
+
+/**
+ * Definition of an lcs buffer.
+ */
+struct lcs_buffer {
+ enum lcs_buffer_states state;
+ void *data;
+ int count;
+ /* Callback for completion notification. */
+ void (*callback)(struct lcs_channel *, struct lcs_buffer *);
+};
+
+struct lcs_reply {
+ struct list_head list;
+ __u16 sequence_no;
+ atomic_t refcnt;
+ /* Callback for completion notification. */
+ void (*callback)(struct lcs_card *, struct lcs_cmd *);
+ wait_queue_head_t wait_q;
+ struct lcs_card *card;
+ int received;
+ int rc;
+};
+
+/**
+ * Definition of an lcs channel
+ */
+struct lcs_channel {
+ enum lcs_channel_states state;
+ struct ccw_device *ccwdev;
+ struct ccw1 ccws[LCS_NUM_BUFFS + 1];
+ wait_queue_head_t wait_q;
+ struct tasklet_struct irq_tasklet;
+ struct lcs_buffer iob[LCS_NUM_BUFFS];
+ int io_idx;
+ int buf_idx;
+};
+
+
+/**
+ * definition of the lcs card
+ */
+struct lcs_card {
+ spinlock_t lock;
+ spinlock_t ipm_lock;
+ enum lcs_dev_states state;
+ struct net_device *dev;
+ struct net_device_stats stats;
+ unsigned short (*lan_type_trans)(struct sk_buff *skb,
+ struct net_device *dev);
+ struct lcs_channel read;
+ struct lcs_channel write;
+ struct lcs_buffer *tx_buffer;
+ int tx_emitted;
+ struct list_head lancmd_waiters;
+ int lancmd_timeout;
+
+ struct work_struct kernel_thread_starter;
+ spinlock_t mask_lock;
+ unsigned long thread_start_mask;
+ unsigned long thread_running_mask;
+ unsigned long thread_allowed_mask;
+ wait_queue_head_t wait_q;
+
+#ifdef CONFIG_IP_MULTICAST
+ struct list_head ipm_list;
+#endif
+ __u8 mac[LCS_MAC_LENGTH];
+ __u16 ip_assists_supported;
+ __u16 ip_assists_enabled;
+ __s8 lan_type;
+ __u32 pkt_seq;
+ __u16 sequence_no;
+ __s16 portno;
+ /* Some info copied from probeinfo */
+ u8 device_forced;
+ u8 max_port_no;
+ u8 hint_port_no;
+ s16 port_protocol_no;
+} __attribute__ ((aligned(8)));
+
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c
new file mode 100644
index 0000000..16e8e69
--- /dev/null
+++ b/drivers/s390/net/netiucv.c
@@ -0,0 +1,2149 @@
+/*
+ * $Id: netiucv.c,v 1.63 2004/07/27 13:36:05 mschwide Exp $
+ *
+ * IUCV network driver
+ *
+ * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ *
+ * Driverfs integration and all bugs therein by Cornelia Huck(cohuck@de.ibm.com)
+ *
+ * Documentation used:
+ * the source of the original IUCV driver by:
+ * Stefan Hegewald <hegewald@de.ibm.com>
+ * Hartmut Penner <hpenner@de.ibm.com>
+ * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
+ * Martin Schwidefsky (schwidefsky@de.ibm.com)
+ * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * RELEASE-TAG: IUCV network driver $Revision: 1.63 $
+ *
+ */
+
+#undef DEBUG
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/timer.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+
+#include <linux/signal.h>
+#include <linux/string.h>
+#include <linux/device.h>
+
+#include <linux/ip.h>
+#include <linux/if_arp.h>
+#include <linux/tcp.h>
+#include <linux/skbuff.h>
+#include <linux/ctype.h>
+#include <net/dst.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include "iucv.h"
+#include "fsm.h"
+
+MODULE_AUTHOR
+ ("(C) 2001 IBM Corporation by Fritz Elfert (felfert@millenux.com)");
+MODULE_DESCRIPTION ("Linux for S/390 IUCV network driver");
+
+
+#define PRINTK_HEADER " iucv: " /* for debugging */
+
+static struct device_driver netiucv_driver = {
+ .name = "netiucv",
+ .bus = &iucv_bus,
+};
+
+/**
+ * Per connection profiling data
+ */
+struct connection_profile {
+ unsigned long maxmulti;
+ unsigned long maxcqueue;
+ unsigned long doios_single;
+ unsigned long doios_multi;
+ unsigned long txlen;
+ unsigned long tx_time;
+ struct timespec send_stamp;
+ unsigned long tx_pending;
+ unsigned long tx_max_pending;
+};
+
+/**
+ * Representation of one iucv connection
+ */
+struct iucv_connection {
+ struct iucv_connection *next;
+ iucv_handle_t handle;
+ __u16 pathid;
+ struct sk_buff *rx_buff;
+ struct sk_buff *tx_buff;
+ struct sk_buff_head collect_queue;
+ struct sk_buff_head commit_queue;
+ spinlock_t collect_lock;
+ int collect_len;
+ int max_buffsize;
+ fsm_timer timer;
+ fsm_instance *fsm;
+ struct net_device *netdev;
+ struct connection_profile prof;
+ char userid[9];
+};
+
+/**
+ * Linked list of all connection structs.
+ */
+static struct iucv_connection *iucv_connections;
+
+/**
+ * Representation of event-data for the
+ * connection state machine.
+ */
+struct iucv_event {
+ struct iucv_connection *conn;
+ void *data;
+};
+
+/**
+ * Private part of the network device structure
+ */
+struct netiucv_priv {
+ struct net_device_stats stats;
+ unsigned long tbusy;
+ fsm_instance *fsm;
+ struct iucv_connection *conn;
+ struct device *dev;
+};
+
+/**
+ * Link level header for a packet.
+ */
+typedef struct ll_header_t {
+ __u16 next;
+} ll_header;
+
+#define NETIUCV_HDRLEN (sizeof(ll_header))
+#define NETIUCV_BUFSIZE_MAX 32768
+#define NETIUCV_BUFSIZE_DEFAULT NETIUCV_BUFSIZE_MAX
+#define NETIUCV_MTU_MAX (NETIUCV_BUFSIZE_MAX - NETIUCV_HDRLEN)
+#define NETIUCV_MTU_DEFAULT 9216
+#define NETIUCV_QUEUELEN_DEFAULT 50
+#define NETIUCV_TIMEOUT_5SEC 5000
+
+/**
+ * Compatibility macros for busy handling
+ * of network devices.
+ */
+static __inline__ void netiucv_clear_busy(struct net_device *dev)
+{
+ clear_bit(0, &(((struct netiucv_priv *)dev->priv)->tbusy));
+ netif_wake_queue(dev);
+}
+
+static __inline__ int netiucv_test_and_set_busy(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ return test_and_set_bit(0, &((struct netiucv_priv *)dev->priv)->tbusy);
+}
+
+static __u8 iucv_host[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+static __u8 iucvMagic[16] = {
+ 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+ 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40
+};
+
+/**
+ * This mask means the 16-byte IUCV "magic" and the origin userid must
+ * match exactly as specified in order to give connection_pending()
+ * control.
+ */
+static __u8 netiucv_mask[] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+};
+
+/**
+ * Convert an iucv userId to its printable
+ * form (strip whitespace at end).
+ *
+ * @param An iucv userId
+ *
+ * @returns The printable string (static data!!)
+ */
+static __inline__ char *
+netiucv_printname(char *name)
+{
+ static char tmp[9];
+ char *p = tmp;
+ memcpy(tmp, name, 8);
+ tmp[8] = '\0';
+ while (*p && (!isspace(*p)))
+ p++;
+ *p = '\0';
+ return tmp;
+}
+
+/**
+ * States of the interface statemachine.
+ */
+enum dev_states {
+ DEV_STATE_STOPPED,
+ DEV_STATE_STARTWAIT,
+ DEV_STATE_STOPWAIT,
+ DEV_STATE_RUNNING,
+ /**
+ * MUST be always the last element!!
+ */
+ NR_DEV_STATES
+};
+
+static const char *dev_state_names[] = {
+ "Stopped",
+ "StartWait",
+ "StopWait",
+ "Running",
+};
+
+/**
+ * Events of the interface statemachine.
+ */
+enum dev_events {
+ DEV_EVENT_START,
+ DEV_EVENT_STOP,
+ DEV_EVENT_CONUP,
+ DEV_EVENT_CONDOWN,
+ /**
+ * MUST be always the last element!!
+ */
+ NR_DEV_EVENTS
+};
+
+static const char *dev_event_names[] = {
+ "Start",
+ "Stop",
+ "Connection up",
+ "Connection down",
+};
+
+/**
+ * Events of the connection statemachine
+ */
+enum conn_events {
+ /**
+ * Events, representing callbacks from
+ * lowlevel iucv layer)
+ */
+ CONN_EVENT_CONN_REQ,
+ CONN_EVENT_CONN_ACK,
+ CONN_EVENT_CONN_REJ,
+ CONN_EVENT_CONN_SUS,
+ CONN_EVENT_CONN_RES,
+ CONN_EVENT_RX,
+ CONN_EVENT_TXDONE,
+
+ /**
+ * Events, representing errors return codes from
+ * calls to lowlevel iucv layer
+ */
+
+ /**
+ * Event, representing timer expiry.
+ */
+ CONN_EVENT_TIMER,
+
+ /**
+ * Events, representing commands from upper levels.
+ */
+ CONN_EVENT_START,
+ CONN_EVENT_STOP,
+
+ /**
+ * MUST be always the last element!!
+ */
+ NR_CONN_EVENTS,
+};
+
+static const char *conn_event_names[] = {
+ "Remote connection request",
+ "Remote connection acknowledge",
+ "Remote connection reject",
+ "Connection suspended",
+ "Connection resumed",
+ "Data received",
+ "Data sent",
+
+ "Timer",
+
+ "Start",
+ "Stop",
+};
+
+/**
+ * States of the connection statemachine.
+ */
+enum conn_states {
+ /**
+ * Connection not assigned to any device,
+ * initial state, invalid
+ */
+ CONN_STATE_INVALID,
+
+ /**
+ * Userid assigned but not operating
+ */
+ CONN_STATE_STOPPED,
+
+ /**
+ * Connection registered,
+ * no connection request sent yet,
+ * no connection request received
+ */
+ CONN_STATE_STARTWAIT,
+
+ /**
+ * Connection registered and connection request sent,
+ * no acknowledge and no connection request received yet.
+ */
+ CONN_STATE_SETUPWAIT,
+
+ /**
+ * Connection up and running idle
+ */
+ CONN_STATE_IDLE,
+
+ /**
+ * Data sent, awaiting CONN_EVENT_TXDONE
+ */
+ CONN_STATE_TX,
+
+ /**
+ * Error during registration.
+ */
+ CONN_STATE_REGERR,
+
+ /**
+ * Error during registration.
+ */
+ CONN_STATE_CONNERR,
+
+ /**
+ * MUST be always the last element!!
+ */
+ NR_CONN_STATES,
+};
+
+static const char *conn_state_names[] = {
+ "Invalid",
+ "Stopped",
+ "StartWait",
+ "SetupWait",
+ "Idle",
+ "TX",
+ "Terminating",
+ "Registration error",
+ "Connect error",
+};
+
+
+/**
+ * Debug Facility Stuff
+ */
+static debug_info_t *iucv_dbf_setup = NULL;
+static debug_info_t *iucv_dbf_data = NULL;
+static debug_info_t *iucv_dbf_trace = NULL;
+
+DEFINE_PER_CPU(char[256], iucv_dbf_txt_buf);
+
+static void
+iucv_unregister_dbf_views(void)
+{
+ if (iucv_dbf_setup)
+ debug_unregister(iucv_dbf_setup);
+ if (iucv_dbf_data)
+ debug_unregister(iucv_dbf_data);
+ if (iucv_dbf_trace)
+ debug_unregister(iucv_dbf_trace);
+}
+static int
+iucv_register_dbf_views(void)
+{
+ iucv_dbf_setup = debug_register(IUCV_DBF_SETUP_NAME,
+ IUCV_DBF_SETUP_INDEX,
+ IUCV_DBF_SETUP_NR_AREAS,
+ IUCV_DBF_SETUP_LEN);
+ iucv_dbf_data = debug_register(IUCV_DBF_DATA_NAME,
+ IUCV_DBF_DATA_INDEX,
+ IUCV_DBF_DATA_NR_AREAS,
+ IUCV_DBF_DATA_LEN);
+ iucv_dbf_trace = debug_register(IUCV_DBF_TRACE_NAME,
+ IUCV_DBF_TRACE_INDEX,
+ IUCV_DBF_TRACE_NR_AREAS,
+ IUCV_DBF_TRACE_LEN);
+
+ if ((iucv_dbf_setup == NULL) || (iucv_dbf_data == NULL) ||
+ (iucv_dbf_trace == NULL)) {
+ iucv_unregister_dbf_views();
+ return -ENOMEM;
+ }
+ debug_register_view(iucv_dbf_setup, &debug_hex_ascii_view);
+ debug_set_level(iucv_dbf_setup, IUCV_DBF_SETUP_LEVEL);
+
+ debug_register_view(iucv_dbf_data, &debug_hex_ascii_view);
+ debug_set_level(iucv_dbf_data, IUCV_DBF_DATA_LEVEL);
+
+ debug_register_view(iucv_dbf_trace, &debug_hex_ascii_view);
+ debug_set_level(iucv_dbf_trace, IUCV_DBF_TRACE_LEVEL);
+
+ return 0;
+}
+
+/**
+ * Callback-wrappers, called from lowlevel iucv layer.
+ *****************************************************************************/
+
+static void
+netiucv_callback_rx(iucv_MessagePending *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+
+ fsm_event(conn->fsm, CONN_EVENT_RX, &ev);
+}
+
+static void
+netiucv_callback_txdone(iucv_MessageComplete *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+ fsm_event(conn->fsm, CONN_EVENT_TXDONE, &ev);
+}
+
+static void
+netiucv_callback_connack(iucv_ConnectionComplete *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+ fsm_event(conn->fsm, CONN_EVENT_CONN_ACK, &ev);
+}
+
+static void
+netiucv_callback_connreq(iucv_ConnectionPending *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+ fsm_event(conn->fsm, CONN_EVENT_CONN_REQ, &ev);
+}
+
+static void
+netiucv_callback_connrej(iucv_ConnectionSevered *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+ fsm_event(conn->fsm, CONN_EVENT_CONN_REJ, &ev);
+}
+
+static void
+netiucv_callback_connsusp(iucv_ConnectionQuiesced *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+ fsm_event(conn->fsm, CONN_EVENT_CONN_SUS, &ev);
+}
+
+static void
+netiucv_callback_connres(iucv_ConnectionResumed *eib, void *pgm_data)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)pgm_data;
+ struct iucv_event ev;
+
+ ev.conn = conn;
+ ev.data = (void *)eib;
+ fsm_event(conn->fsm, CONN_EVENT_CONN_RES, &ev);
+}
+
+static iucv_interrupt_ops_t netiucv_ops = {
+ .ConnectionPending = netiucv_callback_connreq,
+ .ConnectionComplete = netiucv_callback_connack,
+ .ConnectionSevered = netiucv_callback_connrej,
+ .ConnectionQuiesced = netiucv_callback_connsusp,
+ .ConnectionResumed = netiucv_callback_connres,
+ .MessagePending = netiucv_callback_rx,
+ .MessageComplete = netiucv_callback_txdone
+};
+
+/**
+ * Dummy NOP action for all statemachines
+ */
+static void
+fsm_action_nop(fsm_instance *fi, int event, void *arg)
+{
+}
+
+/**
+ * Actions of the connection statemachine
+ *****************************************************************************/
+
+/**
+ * Helper function for conn_action_rx()
+ * Unpack a just received skb and hand it over to
+ * upper layers.
+ *
+ * @param conn The connection where this skb has been received.
+ * @param pskb The received skb.
+ */
+//static __inline__ void
+static void
+netiucv_unpack_skb(struct iucv_connection *conn, struct sk_buff *pskb)
+{
+ struct net_device *dev = conn->netdev;
+ struct netiucv_priv *privptr = dev->priv;
+ __u16 offset = 0;
+
+ skb_put(pskb, NETIUCV_HDRLEN);
+ pskb->dev = dev;
+ pskb->ip_summed = CHECKSUM_NONE;
+ pskb->protocol = ntohs(ETH_P_IP);
+
+ while (1) {
+ struct sk_buff *skb;
+ ll_header *header = (ll_header *)pskb->data;
+
+ if (!header->next)
+ break;
+
+ skb_pull(pskb, NETIUCV_HDRLEN);
+ header->next -= offset;
+ offset += header->next;
+ header->next -= NETIUCV_HDRLEN;
+ if (skb_tailroom(pskb) < header->next) {
+ PRINT_WARN("%s: Illegal next field in iucv header: "
+ "%d > %d\n",
+ dev->name, header->next, skb_tailroom(pskb));
+ IUCV_DBF_TEXT_(data, 2, "Illegal next field: %d > %d\n",
+ header->next, skb_tailroom(pskb));
+ return;
+ }
+ skb_put(pskb, header->next);
+ pskb->mac.raw = pskb->data;
+ skb = dev_alloc_skb(pskb->len);
+ if (!skb) {
+ PRINT_WARN("%s Out of memory in netiucv_unpack_skb\n",
+ dev->name);
+ IUCV_DBF_TEXT(data, 2,
+ "Out of memory in netiucv_unpack_skb\n");
+ privptr->stats.rx_dropped++;
+ return;
+ }
+ memcpy(skb_put(skb, pskb->len), pskb->data, pskb->len);
+ skb->mac.raw = skb->data;
+ skb->dev = pskb->dev;
+ skb->protocol = pskb->protocol;
+ pskb->ip_summed = CHECKSUM_UNNECESSARY;
+ /*
+ * Since receiving is always initiated from a tasklet (in iucv.c),
+ * we must use netif_rx_ni() instead of netif_rx()
+ */
+ netif_rx_ni(skb);
+ dev->last_rx = jiffies;
+ privptr->stats.rx_packets++;
+ privptr->stats.rx_bytes += skb->len;
+ skb_pull(pskb, header->next);
+ skb_put(pskb, NETIUCV_HDRLEN);
+ }
+}
+
+static void
+conn_action_rx(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ iucv_MessagePending *eib = (iucv_MessagePending *)ev->data;
+ struct netiucv_priv *privptr =(struct netiucv_priv *)conn->netdev->priv;
+
+ __u32 msglen = eib->ln1msg2.ipbfln1f;
+ int rc;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+
+ if (!conn->netdev) {
+ /* FRITZ: How to tell iucv LL to drop the msg? */
+ PRINT_WARN("Received data for unlinked connection\n");
+ IUCV_DBF_TEXT(data, 2,
+ "Received data for unlinked connection\n");
+ return;
+ }
+ if (msglen > conn->max_buffsize) {
+ /* FRITZ: How to tell iucv LL to drop the msg? */
+ privptr->stats.rx_dropped++;
+ PRINT_WARN("msglen %d > max_buffsize %d\n",
+ msglen, conn->max_buffsize);
+ IUCV_DBF_TEXT_(data, 2, "msglen %d > max_buffsize %d\n",
+ msglen, conn->max_buffsize);
+ return;
+ }
+ conn->rx_buff->data = conn->rx_buff->tail = conn->rx_buff->head;
+ conn->rx_buff->len = 0;
+ rc = iucv_receive(conn->pathid, eib->ipmsgid, eib->iptrgcls,
+ conn->rx_buff->data, msglen, NULL, NULL, NULL);
+ if (rc || msglen < 5) {
+ privptr->stats.rx_errors++;
+ PRINT_WARN("iucv_receive returned %08x\n", rc);
+ IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_receive\n", rc);
+ return;
+ }
+ netiucv_unpack_skb(conn, conn->rx_buff);
+}
+
+static void
+conn_action_txdone(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ iucv_MessageComplete *eib = (iucv_MessageComplete *)ev->data;
+ struct netiucv_priv *privptr = NULL;
+ /* Shut up, gcc! skb is always below 2G. */
+ __u32 single_flag = eib->ipmsgtag;
+ __u32 txbytes = 0;
+ __u32 txpackets = 0;
+ __u32 stat_maxcq = 0;
+ struct sk_buff *skb;
+ unsigned long saveflags;
+ ll_header header;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+
+ if (conn && conn->netdev && conn->netdev->priv)
+ privptr = (struct netiucv_priv *)conn->netdev->priv;
+ conn->prof.tx_pending--;
+ if (single_flag) {
+ if ((skb = skb_dequeue(&conn->commit_queue))) {
+ atomic_dec(&skb->users);
+ dev_kfree_skb_any(skb);
+ if (privptr) {
+ privptr->stats.tx_packets++;
+ privptr->stats.tx_bytes +=
+ (skb->len - NETIUCV_HDRLEN
+ - NETIUCV_HDRLEN);
+ }
+ }
+ }
+ conn->tx_buff->data = conn->tx_buff->tail = conn->tx_buff->head;
+ conn->tx_buff->len = 0;
+ spin_lock_irqsave(&conn->collect_lock, saveflags);
+ while ((skb = skb_dequeue(&conn->collect_queue))) {
+ header.next = conn->tx_buff->len + skb->len + NETIUCV_HDRLEN;
+ memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header,
+ NETIUCV_HDRLEN);
+ memcpy(skb_put(conn->tx_buff, skb->len), skb->data, skb->len);
+ txbytes += skb->len;
+ txpackets++;
+ stat_maxcq++;
+ atomic_dec(&skb->users);
+ dev_kfree_skb_any(skb);
+ }
+ if (conn->collect_len > conn->prof.maxmulti)
+ conn->prof.maxmulti = conn->collect_len;
+ conn->collect_len = 0;
+ spin_unlock_irqrestore(&conn->collect_lock, saveflags);
+ if (conn->tx_buff->len) {
+ int rc;
+
+ header.next = 0;
+ memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header,
+ NETIUCV_HDRLEN);
+
+ conn->prof.send_stamp = xtime;
+ rc = iucv_send(conn->pathid, NULL, 0, 0, 0, 0,
+ conn->tx_buff->data, conn->tx_buff->len);
+ conn->prof.doios_multi++;
+ conn->prof.txlen += conn->tx_buff->len;
+ conn->prof.tx_pending++;
+ if (conn->prof.tx_pending > conn->prof.tx_max_pending)
+ conn->prof.tx_max_pending = conn->prof.tx_pending;
+ if (rc) {
+ conn->prof.tx_pending--;
+ fsm_newstate(fi, CONN_STATE_IDLE);
+ if (privptr)
+ privptr->stats.tx_errors += txpackets;
+ PRINT_WARN("iucv_send returned %08x\n", rc);
+ IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc);
+ } else {
+ if (privptr) {
+ privptr->stats.tx_packets += txpackets;
+ privptr->stats.tx_bytes += txbytes;
+ }
+ if (stat_maxcq > conn->prof.maxcqueue)
+ conn->prof.maxcqueue = stat_maxcq;
+ }
+ } else
+ fsm_newstate(fi, CONN_STATE_IDLE);
+}
+
+static void
+conn_action_connaccept(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ iucv_ConnectionPending *eib = (iucv_ConnectionPending *)ev->data;
+ struct net_device *netdev = conn->netdev;
+ struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv;
+ int rc;
+ __u16 msglimit;
+ __u8 udata[16];
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ rc = iucv_accept(eib->ippathid, NETIUCV_QUEUELEN_DEFAULT, udata, 0,
+ conn->handle, conn, NULL, &msglimit);
+ if (rc) {
+ PRINT_WARN("%s: IUCV accept failed with error %d\n",
+ netdev->name, rc);
+ IUCV_DBF_TEXT_(setup, 2, "rc %d from iucv_accept", rc);
+ return;
+ }
+ fsm_newstate(fi, CONN_STATE_IDLE);
+ conn->pathid = eib->ippathid;
+ netdev->tx_queue_len = msglimit;
+ fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev);
+}
+
+static void
+conn_action_connreject(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ struct net_device *netdev = conn->netdev;
+ iucv_ConnectionPending *eib = (iucv_ConnectionPending *)ev->data;
+ __u8 udata[16];
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ iucv_sever(eib->ippathid, udata);
+ if (eib->ippathid != conn->pathid) {
+ PRINT_INFO("%s: IR Connection Pending; "
+ "pathid %d does not match original pathid %d\n",
+ netdev->name, eib->ippathid, conn->pathid);
+ IUCV_DBF_TEXT_(data, 2,
+ "connreject: IR pathid %d, conn. pathid %d\n",
+ eib->ippathid, conn->pathid);
+ iucv_sever(conn->pathid, udata);
+ }
+}
+
+static void
+conn_action_connack(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ iucv_ConnectionComplete *eib = (iucv_ConnectionComplete *)ev->data;
+ struct net_device *netdev = conn->netdev;
+ struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ fsm_deltimer(&conn->timer);
+ fsm_newstate(fi, CONN_STATE_IDLE);
+ if (eib->ippathid != conn->pathid) {
+ PRINT_INFO("%s: IR Connection Complete; "
+ "pathid %d does not match original pathid %d\n",
+ netdev->name, eib->ippathid, conn->pathid);
+ IUCV_DBF_TEXT_(data, 2,
+ "connack: IR pathid %d, conn. pathid %d\n",
+ eib->ippathid, conn->pathid);
+ conn->pathid = eib->ippathid;
+ }
+ netdev->tx_queue_len = eib->ipmsglim;
+ fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev);
+}
+
+static void
+conn_action_conntimsev(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_connection *conn = (struct iucv_connection *)arg;
+ __u8 udata[16];
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ fsm_deltimer(&conn->timer);
+ iucv_sever(conn->pathid, udata);
+ fsm_newstate(fi, CONN_STATE_STARTWAIT);
+}
+
+static void
+conn_action_connsever(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ struct net_device *netdev = conn->netdev;
+ struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv;
+ __u8 udata[16];
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ fsm_deltimer(&conn->timer);
+ iucv_sever(conn->pathid, udata);
+ PRINT_INFO("%s: Remote dropped connection\n", netdev->name);
+ IUCV_DBF_TEXT(data, 2,
+ "conn_action_connsever: Remote dropped connection\n");
+ fsm_newstate(fi, CONN_STATE_STARTWAIT);
+ fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev);
+}
+
+static void
+conn_action_start(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ __u16 msglimit;
+ int rc;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ if (!conn->handle) {
+ IUCV_DBF_TEXT(trace, 5, "calling iucv_register_program\n");
+ conn->handle =
+ iucv_register_program(iucvMagic, conn->userid,
+ netiucv_mask,
+ &netiucv_ops, conn);
+ fsm_newstate(fi, CONN_STATE_STARTWAIT);
+ if (!conn->handle) {
+ fsm_newstate(fi, CONN_STATE_REGERR);
+ conn->handle = NULL;
+ IUCV_DBF_TEXT(setup, 2,
+ "NULL from iucv_register_program\n");
+ return;
+ }
+
+ PRINT_DEBUG("%s('%s'): registered successfully\n",
+ conn->netdev->name, conn->userid);
+ }
+
+ PRINT_DEBUG("%s('%s'): connecting ...\n",
+ conn->netdev->name, conn->userid);
+
+ /* We must set the state before calling iucv_connect because the callback
+ * handler could be called at any point after the connection request is
+ * sent */
+
+ fsm_newstate(fi, CONN_STATE_SETUPWAIT);
+ rc = iucv_connect(&(conn->pathid), NETIUCV_QUEUELEN_DEFAULT, iucvMagic,
+ conn->userid, iucv_host, 0, NULL, &msglimit,
+ conn->handle, conn);
+ switch (rc) {
+ case 0:
+ conn->netdev->tx_queue_len = msglimit;
+ fsm_addtimer(&conn->timer, NETIUCV_TIMEOUT_5SEC,
+ CONN_EVENT_TIMER, conn);
+ return;
+ case 11:
+ PRINT_INFO("%s: User %s is currently not available.\n",
+ conn->netdev->name,
+ netiucv_printname(conn->userid));
+ fsm_newstate(fi, CONN_STATE_STARTWAIT);
+ return;
+ case 12:
+ PRINT_INFO("%s: User %s is currently not ready.\n",
+ conn->netdev->name,
+ netiucv_printname(conn->userid));
+ fsm_newstate(fi, CONN_STATE_STARTWAIT);
+ return;
+ case 13:
+ PRINT_WARN("%s: Too many IUCV connections.\n",
+ conn->netdev->name);
+ fsm_newstate(fi, CONN_STATE_CONNERR);
+ break;
+ case 14:
+ PRINT_WARN(
+ "%s: User %s has too many IUCV connections.\n",
+ conn->netdev->name,
+ netiucv_printname(conn->userid));
+ fsm_newstate(fi, CONN_STATE_CONNERR);
+ break;
+ case 15:
+ PRINT_WARN(
+ "%s: No IUCV authorization in CP directory.\n",
+ conn->netdev->name);
+ fsm_newstate(fi, CONN_STATE_CONNERR);
+ break;
+ default:
+ PRINT_WARN("%s: iucv_connect returned error %d\n",
+ conn->netdev->name, rc);
+ fsm_newstate(fi, CONN_STATE_CONNERR);
+ break;
+ }
+ IUCV_DBF_TEXT_(setup, 5, "iucv_connect rc is %d\n", rc);
+ IUCV_DBF_TEXT(trace, 5, "calling iucv_unregister_program\n");
+ iucv_unregister_program(conn->handle);
+ conn->handle = NULL;
+}
+
+static void
+netiucv_purge_skb_queue(struct sk_buff_head *q)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(q))) {
+ atomic_dec(&skb->users);
+ dev_kfree_skb_any(skb);
+ }
+}
+
+static void
+conn_action_stop(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ struct net_device *netdev = conn->netdev;
+ struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ fsm_deltimer(&conn->timer);
+ fsm_newstate(fi, CONN_STATE_STOPPED);
+ netiucv_purge_skb_queue(&conn->collect_queue);
+ if (conn->handle)
+ IUCV_DBF_TEXT(trace, 5, "calling iucv_unregister_program\n");
+ iucv_unregister_program(conn->handle);
+ conn->handle = NULL;
+ netiucv_purge_skb_queue(&conn->commit_queue);
+ fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev);
+}
+
+static void
+conn_action_inval(fsm_instance *fi, int event, void *arg)
+{
+ struct iucv_event *ev = (struct iucv_event *)arg;
+ struct iucv_connection *conn = ev->conn;
+ struct net_device *netdev = conn->netdev;
+
+ PRINT_WARN("%s: Cannot connect without username\n",
+ netdev->name);
+ IUCV_DBF_TEXT(data, 2, "conn_action_inval called\n");
+}
+
+static const fsm_node conn_fsm[] = {
+ { CONN_STATE_INVALID, CONN_EVENT_START, conn_action_inval },
+ { CONN_STATE_STOPPED, CONN_EVENT_START, conn_action_start },
+
+ { CONN_STATE_STOPPED, CONN_EVENT_STOP, conn_action_stop },
+ { CONN_STATE_STARTWAIT, CONN_EVENT_STOP, conn_action_stop },
+ { CONN_STATE_SETUPWAIT, CONN_EVENT_STOP, conn_action_stop },
+ { CONN_STATE_IDLE, CONN_EVENT_STOP, conn_action_stop },
+ { CONN_STATE_TX, CONN_EVENT_STOP, conn_action_stop },
+ { CONN_STATE_REGERR, CONN_EVENT_STOP, conn_action_stop },
+ { CONN_STATE_CONNERR, CONN_EVENT_STOP, conn_action_stop },
+
+ { CONN_STATE_STOPPED, CONN_EVENT_CONN_REQ, conn_action_connreject },
+ { CONN_STATE_STARTWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept },
+ { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept },
+ { CONN_STATE_IDLE, CONN_EVENT_CONN_REQ, conn_action_connreject },
+ { CONN_STATE_TX, CONN_EVENT_CONN_REQ, conn_action_connreject },
+
+ { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_ACK, conn_action_connack },
+ { CONN_STATE_SETUPWAIT, CONN_EVENT_TIMER, conn_action_conntimsev },
+
+ { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REJ, conn_action_connsever },
+ { CONN_STATE_IDLE, CONN_EVENT_CONN_REJ, conn_action_connsever },
+ { CONN_STATE_TX, CONN_EVENT_CONN_REJ, conn_action_connsever },
+
+ { CONN_STATE_IDLE, CONN_EVENT_RX, conn_action_rx },
+ { CONN_STATE_TX, CONN_EVENT_RX, conn_action_rx },
+
+ { CONN_STATE_TX, CONN_EVENT_TXDONE, conn_action_txdone },
+ { CONN_STATE_IDLE, CONN_EVENT_TXDONE, conn_action_txdone },
+};
+
+static const int CONN_FSM_LEN = sizeof(conn_fsm) / sizeof(fsm_node);
+
+
+/**
+ * Actions for interface - statemachine.
+ *****************************************************************************/
+
+/**
+ * Startup connection by sending CONN_EVENT_START to it.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_start(fsm_instance *fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct netiucv_priv *privptr = dev->priv;
+ struct iucv_event ev;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ ev.conn = privptr->conn;
+ fsm_newstate(fi, DEV_STATE_STARTWAIT);
+ fsm_event(privptr->conn->fsm, CONN_EVENT_START, &ev);
+}
+
+/**
+ * Shutdown connection by sending CONN_EVENT_STOP to it.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_stop(fsm_instance *fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct netiucv_priv *privptr = dev->priv;
+ struct iucv_event ev;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ ev.conn = privptr->conn;
+
+ fsm_newstate(fi, DEV_STATE_STOPWAIT);
+ fsm_event(privptr->conn->fsm, CONN_EVENT_STOP, &ev);
+}
+
+/**
+ * Called from connection statemachine
+ * when a connection is up and running.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_connup(fsm_instance *fi, int event, void *arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct netiucv_priv *privptr = dev->priv;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ switch (fsm_getstate(fi)) {
+ case DEV_STATE_STARTWAIT:
+ fsm_newstate(fi, DEV_STATE_RUNNING);
+ PRINT_INFO("%s: connected with remote side %s\n",
+ dev->name, privptr->conn->userid);
+ IUCV_DBF_TEXT(setup, 3,
+ "connection is up and running\n");
+ break;
+ case DEV_STATE_STOPWAIT:
+ PRINT_INFO(
+ "%s: got connection UP event during shutdown!\n",
+ dev->name);
+ IUCV_DBF_TEXT(data, 2,
+ "dev_action_connup: in DEV_STATE_STOPWAIT\n");
+ break;
+ }
+}
+
+/**
+ * Called from connection statemachine
+ * when a connection has been shutdown.
+ *
+ * @param fi An instance of an interface statemachine.
+ * @param event The event, just happened.
+ * @param arg Generic pointer, casted from struct net_device * upon call.
+ */
+static void
+dev_action_conndown(fsm_instance *fi, int event, void *arg)
+{
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ switch (fsm_getstate(fi)) {
+ case DEV_STATE_RUNNING:
+ fsm_newstate(fi, DEV_STATE_STARTWAIT);
+ break;
+ case DEV_STATE_STOPWAIT:
+ fsm_newstate(fi, DEV_STATE_STOPPED);
+ IUCV_DBF_TEXT(setup, 3, "connection is down\n");
+ break;
+ }
+}
+
+static const fsm_node dev_fsm[] = {
+ { DEV_STATE_STOPPED, DEV_EVENT_START, dev_action_start },
+
+ { DEV_STATE_STOPWAIT, DEV_EVENT_START, dev_action_start },
+ { DEV_STATE_STOPWAIT, DEV_EVENT_CONDOWN, dev_action_conndown },
+
+ { DEV_STATE_STARTWAIT, DEV_EVENT_STOP, dev_action_stop },
+ { DEV_STATE_STARTWAIT, DEV_EVENT_CONUP, dev_action_connup },
+
+ { DEV_STATE_RUNNING, DEV_EVENT_STOP, dev_action_stop },
+ { DEV_STATE_RUNNING, DEV_EVENT_CONDOWN, dev_action_conndown },
+ { DEV_STATE_RUNNING, DEV_EVENT_CONUP, fsm_action_nop },
+};
+
+static const int DEV_FSM_LEN = sizeof(dev_fsm) / sizeof(fsm_node);
+
+/**
+ * Transmit a packet.
+ * This is a helper function for netiucv_tx().
+ *
+ * @param conn Connection to be used for sending.
+ * @param skb Pointer to struct sk_buff of packet to send.
+ * The linklevel header has already been set up
+ * by netiucv_tx().
+ *
+ * @return 0 on success, -ERRNO on failure. (Never fails.)
+ */
+static int
+netiucv_transmit_skb(struct iucv_connection *conn, struct sk_buff *skb) {
+ unsigned long saveflags;
+ ll_header header;
+ int rc = 0;
+
+ if (fsm_getstate(conn->fsm) != CONN_STATE_IDLE) {
+ int l = skb->len + NETIUCV_HDRLEN;
+
+ spin_lock_irqsave(&conn->collect_lock, saveflags);
+ if (conn->collect_len + l >
+ (conn->max_buffsize - NETIUCV_HDRLEN)) {
+ rc = -EBUSY;
+ IUCV_DBF_TEXT(data, 2,
+ "EBUSY from netiucv_transmit_skb\n");
+ } else {
+ atomic_inc(&skb->users);
+ skb_queue_tail(&conn->collect_queue, skb);
+ conn->collect_len += l;
+ }
+ spin_unlock_irqrestore(&conn->collect_lock, saveflags);
+ } else {
+ struct sk_buff *nskb = skb;
+ /**
+ * Copy the skb to a new allocated skb in lowmem only if the
+ * data is located above 2G in memory or tailroom is < 2.
+ */
+ unsigned long hi =
+ ((unsigned long)(skb->tail + NETIUCV_HDRLEN)) >> 31;
+ int copied = 0;
+ if (hi || (skb_tailroom(skb) < 2)) {
+ nskb = alloc_skb(skb->len + NETIUCV_HDRLEN +
+ NETIUCV_HDRLEN, GFP_ATOMIC | GFP_DMA);
+ if (!nskb) {
+ PRINT_WARN("%s: Could not allocate tx_skb\n",
+ conn->netdev->name);
+ IUCV_DBF_TEXT(data, 2, "alloc_skb failed\n");
+ rc = -ENOMEM;
+ return rc;
+ } else {
+ skb_reserve(nskb, NETIUCV_HDRLEN);
+ memcpy(skb_put(nskb, skb->len),
+ skb->data, skb->len);
+ }
+ copied = 1;
+ }
+ /**
+ * skb now is below 2G and has enough room. Add headers.
+ */
+ header.next = nskb->len + NETIUCV_HDRLEN;
+ memcpy(skb_push(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN);
+ header.next = 0;
+ memcpy(skb_put(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN);
+
+ fsm_newstate(conn->fsm, CONN_STATE_TX);
+ conn->prof.send_stamp = xtime;
+
+ rc = iucv_send(conn->pathid, NULL, 0, 0, 1 /* single_flag */,
+ 0, nskb->data, nskb->len);
+ /* Shut up, gcc! nskb is always below 2G. */
+ conn->prof.doios_single++;
+ conn->prof.txlen += skb->len;
+ conn->prof.tx_pending++;
+ if (conn->prof.tx_pending > conn->prof.tx_max_pending)
+ conn->prof.tx_max_pending = conn->prof.tx_pending;
+ if (rc) {
+ struct netiucv_priv *privptr;
+ fsm_newstate(conn->fsm, CONN_STATE_IDLE);
+ conn->prof.tx_pending--;
+ privptr = (struct netiucv_priv *)conn->netdev->priv;
+ if (privptr)
+ privptr->stats.tx_errors++;
+ if (copied)
+ dev_kfree_skb(nskb);
+ else {
+ /**
+ * Remove our headers. They get added
+ * again on retransmit.
+ */
+ skb_pull(skb, NETIUCV_HDRLEN);
+ skb_trim(skb, skb->len - NETIUCV_HDRLEN);
+ }
+ PRINT_WARN("iucv_send returned %08x\n", rc);
+ IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc);
+ } else {
+ if (copied)
+ dev_kfree_skb(skb);
+ atomic_inc(&nskb->users);
+ skb_queue_tail(&conn->commit_queue, nskb);
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * Interface API for upper network layers
+ *****************************************************************************/
+
+/**
+ * Open an interface.
+ * Called from generic network layer when ifconfig up is run.
+ *
+ * @param dev Pointer to interface struct.
+ *
+ * @return 0 on success, -ERRNO on failure. (Never fails.)
+ */
+static int
+netiucv_open(struct net_device *dev) {
+ fsm_event(((struct netiucv_priv *)dev->priv)->fsm, DEV_EVENT_START,dev);
+ return 0;
+}
+
+/**
+ * Close an interface.
+ * Called from generic network layer when ifconfig down is run.
+ *
+ * @param dev Pointer to interface struct.
+ *
+ * @return 0 on success, -ERRNO on failure. (Never fails.)
+ */
+static int
+netiucv_close(struct net_device *dev) {
+ fsm_event(((struct netiucv_priv *)dev->priv)->fsm, DEV_EVENT_STOP, dev);
+ return 0;
+}
+
+/**
+ * Start transmission of a packet.
+ * Called from generic network device layer.
+ *
+ * @param skb Pointer to buffer containing the packet.
+ * @param dev Pointer to interface struct.
+ *
+ * @return 0 if packet consumed, !0 if packet rejected.
+ * Note: If we return !0, then the packet is free'd by
+ * the generic network layer.
+ */
+static int netiucv_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ int rc = 0;
+ struct netiucv_priv *privptr = dev->priv;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ /**
+ * Some sanity checks ...
+ */
+ if (skb == NULL) {
+ PRINT_WARN("%s: NULL sk_buff passed\n", dev->name);
+ IUCV_DBF_TEXT(data, 2, "netiucv_tx: skb is NULL\n");
+ privptr->stats.tx_dropped++;
+ return 0;
+ }
+ if (skb_headroom(skb) < NETIUCV_HDRLEN) {
+ PRINT_WARN("%s: Got sk_buff with head room < %ld bytes\n",
+ dev->name, NETIUCV_HDRLEN);
+ IUCV_DBF_TEXT(data, 2,
+ "netiucv_tx: skb_headroom < NETIUCV_HDRLEN\n");
+ dev_kfree_skb(skb);
+ privptr->stats.tx_dropped++;
+ return 0;
+ }
+
+ /**
+ * If connection is not running, try to restart it
+ * and throw away packet.
+ */
+ if (fsm_getstate(privptr->fsm) != DEV_STATE_RUNNING) {
+ fsm_event(privptr->fsm, DEV_EVENT_START, dev);
+ dev_kfree_skb(skb);
+ privptr->stats.tx_dropped++;
+ privptr->stats.tx_errors++;
+ privptr->stats.tx_carrier_errors++;
+ return 0;
+ }
+
+ if (netiucv_test_and_set_busy(dev)) {
+ IUCV_DBF_TEXT(data, 2, "EBUSY from netiucv_tx\n");
+ return -EBUSY;
+ }
+ dev->trans_start = jiffies;
+ if (netiucv_transmit_skb(privptr->conn, skb))
+ rc = 1;
+ netiucv_clear_busy(dev);
+ return rc;
+}
+
+/**
+ * Returns interface statistics of a device.
+ *
+ * @param dev Pointer to interface struct.
+ *
+ * @return Pointer to stats struct of this interface.
+ */
+static struct net_device_stats *
+netiucv_stats (struct net_device * dev)
+{
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return &((struct netiucv_priv *)dev->priv)->stats;
+}
+
+/**
+ * Sets MTU of an interface.
+ *
+ * @param dev Pointer to interface struct.
+ * @param new_mtu The new MTU to use for this interface.
+ *
+ * @return 0 on success, -EINVAL if MTU is out of valid range.
+ * (valid range is 576 .. NETIUCV_MTU_MAX).
+ */
+static int
+netiucv_change_mtu (struct net_device * dev, int new_mtu)
+{
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ if ((new_mtu < 576) || (new_mtu > NETIUCV_MTU_MAX)) {
+ IUCV_DBF_TEXT(setup, 2, "given MTU out of valid range\n");
+ return -EINVAL;
+ }
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+/**
+ * attributes in sysfs
+ *****************************************************************************/
+
+static ssize_t
+user_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%s\n", netiucv_printname(priv->conn->userid));
+}
+
+static ssize_t
+user_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+ struct net_device *ndev = priv->conn->netdev;
+ char *p;
+ char *tmp;
+ char username[10];
+ int i;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ if (count>9) {
+ PRINT_WARN("netiucv: username too long (%d)!\n", (int)count);
+ IUCV_DBF_TEXT_(setup, 2,
+ "%d is length of username\n", (int)count);
+ return -EINVAL;
+ }
+
+ tmp = strsep((char **) &buf, "\n");
+ for (i=0, p=tmp; i<8 && *p; i++, p++) {
+ if (isalnum(*p) || (*p == '$'))
+ username[i]= *p;
+ else if (*p == '\n') {
+ /* trailing lf, grr */
+ break;
+ } else {
+ PRINT_WARN("netiucv: Invalid char %c in username!\n",
+ *p);
+ IUCV_DBF_TEXT_(setup, 2,
+ "username: invalid character %c\n",
+ *p);
+ return -EINVAL;
+ }
+ }
+ while (i<9)
+ username[i++] = ' ';
+ username[9] = '\0';
+
+ if (memcmp(username, priv->conn->userid, 8)) {
+ /* username changed */
+ if (ndev->flags & (IFF_UP | IFF_RUNNING)) {
+ PRINT_WARN(
+ "netiucv: device %s active, connected to %s\n",
+ dev->bus_id, priv->conn->userid);
+ PRINT_WARN("netiucv: user cannot be updated\n");
+ IUCV_DBF_TEXT(setup, 2, "user_write: device active\n");
+ return -EBUSY;
+ }
+ }
+ memcpy(priv->conn->userid, username, 9);
+
+ return count;
+
+}
+
+static DEVICE_ATTR(user, 0644, user_show, user_write);
+
+static ssize_t
+buffer_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%d\n", priv->conn->max_buffsize);
+}
+
+static ssize_t
+buffer_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+ struct net_device *ndev = priv->conn->netdev;
+ char *e;
+ int bs1;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ if (count >= 39)
+ return -EINVAL;
+
+ bs1 = simple_strtoul(buf, &e, 0);
+
+ if (e && (!isspace(*e))) {
+ PRINT_WARN("netiucv: Invalid character in buffer!\n");
+ IUCV_DBF_TEXT_(setup, 2, "buffer_write: invalid char %c\n", *e);
+ return -EINVAL;
+ }
+ if (bs1 > NETIUCV_BUFSIZE_MAX) {
+ PRINT_WARN("netiucv: Given buffer size %d too large.\n",
+ bs1);
+ IUCV_DBF_TEXT_(setup, 2,
+ "buffer_write: buffer size %d too large\n",
+ bs1);
+ return -EINVAL;
+ }
+ if ((ndev->flags & IFF_RUNNING) &&
+ (bs1 < (ndev->mtu + NETIUCV_HDRLEN + 2))) {
+ PRINT_WARN("netiucv: Given buffer size %d too small.\n",
+ bs1);
+ IUCV_DBF_TEXT_(setup, 2,
+ "buffer_write: buffer size %d too small\n",
+ bs1);
+ return -EINVAL;
+ }
+ if (bs1 < (576 + NETIUCV_HDRLEN + NETIUCV_HDRLEN)) {
+ PRINT_WARN("netiucv: Given buffer size %d too small.\n",
+ bs1);
+ IUCV_DBF_TEXT_(setup, 2,
+ "buffer_write: buffer size %d too small\n",
+ bs1);
+ return -EINVAL;
+ }
+
+ priv->conn->max_buffsize = bs1;
+ if (!(ndev->flags & IFF_RUNNING))
+ ndev->mtu = bs1 - NETIUCV_HDRLEN - NETIUCV_HDRLEN;
+
+ return count;
+
+}
+
+static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
+
+static ssize_t
+dev_fsm_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%s\n", fsm_getstate_str(priv->fsm));
+}
+
+static DEVICE_ATTR(device_fsm_state, 0444, dev_fsm_show, NULL);
+
+static ssize_t
+conn_fsm_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%s\n", fsm_getstate_str(priv->conn->fsm));
+}
+
+static DEVICE_ATTR(connection_fsm_state, 0444, conn_fsm_show, NULL);
+
+static ssize_t
+maxmulti_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.maxmulti);
+}
+
+static ssize_t
+maxmulti_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.maxmulti = 0;
+ return count;
+}
+
+static DEVICE_ATTR(max_tx_buffer_used, 0644, maxmulti_show, maxmulti_write);
+
+static ssize_t
+maxcq_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.maxcqueue);
+}
+
+static ssize_t
+maxcq_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.maxcqueue = 0;
+ return count;
+}
+
+static DEVICE_ATTR(max_chained_skbs, 0644, maxcq_show, maxcq_write);
+
+static ssize_t
+sdoio_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.doios_single);
+}
+
+static ssize_t
+sdoio_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.doios_single = 0;
+ return count;
+}
+
+static DEVICE_ATTR(tx_single_write_ops, 0644, sdoio_show, sdoio_write);
+
+static ssize_t
+mdoio_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.doios_multi);
+}
+
+static ssize_t
+mdoio_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ priv->conn->prof.doios_multi = 0;
+ return count;
+}
+
+static DEVICE_ATTR(tx_multi_write_ops, 0644, mdoio_show, mdoio_write);
+
+static ssize_t
+txlen_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.txlen);
+}
+
+static ssize_t
+txlen_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.txlen = 0;
+ return count;
+}
+
+static DEVICE_ATTR(netto_bytes, 0644, txlen_show, txlen_write);
+
+static ssize_t
+txtime_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.tx_time);
+}
+
+static ssize_t
+txtime_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.tx_time = 0;
+ return count;
+}
+
+static DEVICE_ATTR(max_tx_io_time, 0644, txtime_show, txtime_write);
+
+static ssize_t
+txpend_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.tx_pending);
+}
+
+static ssize_t
+txpend_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.tx_pending = 0;
+ return count;
+}
+
+static DEVICE_ATTR(tx_pending, 0644, txpend_show, txpend_write);
+
+static ssize_t
+txmpnd_show (struct device *dev, char *buf)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 5, __FUNCTION__);
+ return sprintf(buf, "%ld\n", priv->conn->prof.tx_max_pending);
+}
+
+static ssize_t
+txmpnd_write (struct device *dev, const char *buf, size_t count)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+
+ IUCV_DBF_TEXT(trace, 4, __FUNCTION__);
+ priv->conn->prof.tx_max_pending = 0;
+ return count;
+}
+
+static DEVICE_ATTR(tx_max_pending, 0644, txmpnd_show, txmpnd_write);
+
+static struct attribute *netiucv_attrs[] = {
+ &dev_attr_buffer.attr,
+ &dev_attr_user.attr,
+ NULL,
+};
+
+static struct attribute_group netiucv_attr_group = {
+ .attrs = netiucv_attrs,
+};
+
+static struct attribute *netiucv_stat_attrs[] = {
+ &dev_attr_device_fsm_state.attr,
+ &dev_attr_connection_fsm_state.attr,
+ &dev_attr_max_tx_buffer_used.attr,
+ &dev_attr_max_chained_skbs.attr,
+ &dev_attr_tx_single_write_ops.attr,
+ &dev_attr_tx_multi_write_ops.attr,
+ &dev_attr_netto_bytes.attr,
+ &dev_attr_max_tx_io_time.attr,
+ &dev_attr_tx_pending.attr,
+ &dev_attr_tx_max_pending.attr,
+ NULL,
+};
+
+static struct attribute_group netiucv_stat_attr_group = {
+ .name = "stats",
+ .attrs = netiucv_stat_attrs,
+};
+
+static inline int
+netiucv_add_files(struct device *dev)
+{
+ int ret;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ ret = sysfs_create_group(&dev->kobj, &netiucv_attr_group);
+ if (ret)
+ return ret;
+ ret = sysfs_create_group(&dev->kobj, &netiucv_stat_attr_group);
+ if (ret)
+ sysfs_remove_group(&dev->kobj, &netiucv_attr_group);
+ return ret;
+}
+
+static inline void
+netiucv_remove_files(struct device *dev)
+{
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ sysfs_remove_group(&dev->kobj, &netiucv_stat_attr_group);
+ sysfs_remove_group(&dev->kobj, &netiucv_attr_group);
+}
+
+static int
+netiucv_register_device(struct net_device *ndev)
+{
+ struct netiucv_priv *priv = ndev->priv;
+ struct device *dev = kmalloc(sizeof(struct device), GFP_KERNEL);
+ int ret;
+
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ if (dev) {
+ memset(dev, 0, sizeof(struct device));
+ snprintf(dev->bus_id, BUS_ID_SIZE, "net%s", ndev->name);
+ dev->bus = &iucv_bus;
+ dev->parent = iucv_root;
+ /*
+ * The release function could be called after the
+ * module has been unloaded. It's _only_ task is to
+ * free the struct. Therefore, we specify kfree()
+ * directly here. (Probably a little bit obfuscating
+ * but legitime ...).
+ */
+ dev->release = (void (*)(struct device *))kfree;
+ dev->driver = &netiucv_driver;
+ } else
+ return -ENOMEM;
+
+ ret = device_register(dev);
+
+ if (ret)
+ return ret;
+ ret = netiucv_add_files(dev);
+ if (ret)
+ goto out_unreg;
+ priv->dev = dev;
+ dev->driver_data = priv;
+ return 0;
+
+out_unreg:
+ device_unregister(dev);
+ return ret;
+}
+
+static void
+netiucv_unregister_device(struct device *dev)
+{
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ netiucv_remove_files(dev);
+ device_unregister(dev);
+}
+
+/**
+ * Allocate and initialize a new connection structure.
+ * Add it to the list of netiucv connections;
+ */
+static struct iucv_connection *
+netiucv_new_connection(struct net_device *dev, char *username)
+{
+ struct iucv_connection **clist = &iucv_connections;
+ struct iucv_connection *conn =
+ (struct iucv_connection *)
+ kmalloc(sizeof(struct iucv_connection), GFP_KERNEL);
+
+ if (conn) {
+ memset(conn, 0, sizeof(struct iucv_connection));
+ skb_queue_head_init(&conn->collect_queue);
+ skb_queue_head_init(&conn->commit_queue);
+ conn->max_buffsize = NETIUCV_BUFSIZE_DEFAULT;
+ conn->netdev = dev;
+
+ conn->rx_buff = alloc_skb(NETIUCV_BUFSIZE_DEFAULT,
+ GFP_KERNEL | GFP_DMA);
+ if (!conn->rx_buff) {
+ kfree(conn);
+ return NULL;
+ }
+ conn->tx_buff = alloc_skb(NETIUCV_BUFSIZE_DEFAULT,
+ GFP_KERNEL | GFP_DMA);
+ if (!conn->tx_buff) {
+ kfree_skb(conn->rx_buff);
+ kfree(conn);
+ return NULL;
+ }
+ conn->fsm = init_fsm("netiucvconn", conn_state_names,
+ conn_event_names, NR_CONN_STATES,
+ NR_CONN_EVENTS, conn_fsm, CONN_FSM_LEN,
+ GFP_KERNEL);
+ if (!conn->fsm) {
+ kfree_skb(conn->tx_buff);
+ kfree_skb(conn->rx_buff);
+ kfree(conn);
+ return NULL;
+ }
+ fsm_settimer(conn->fsm, &conn->timer);
+ fsm_newstate(conn->fsm, CONN_STATE_INVALID);
+
+ if (username) {
+ memcpy(conn->userid, username, 9);
+ fsm_newstate(conn->fsm, CONN_STATE_STOPPED);
+ }
+
+ conn->next = *clist;
+ *clist = conn;
+ }
+ return conn;
+}
+
+/**
+ * Release a connection structure and remove it from the
+ * list of netiucv connections.
+ */
+static void
+netiucv_remove_connection(struct iucv_connection *conn)
+{
+ struct iucv_connection **clist = &iucv_connections;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ if (conn == NULL)
+ return;
+ while (*clist) {
+ if (*clist == conn) {
+ *clist = conn->next;
+ if (conn->handle) {
+ iucv_unregister_program(conn->handle);
+ conn->handle = NULL;
+ }
+ fsm_deltimer(&conn->timer);
+ kfree_fsm(conn->fsm);
+ kfree_skb(conn->rx_buff);
+ kfree_skb(conn->tx_buff);
+ return;
+ }
+ clist = &((*clist)->next);
+ }
+}
+
+/**
+ * Release everything of a net device.
+ */
+static void
+netiucv_free_netdevice(struct net_device *dev)
+{
+ struct netiucv_priv *privptr;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ if (!dev)
+ return;
+
+ privptr = (struct netiucv_priv *)dev->priv;
+ if (privptr) {
+ if (privptr->conn)
+ netiucv_remove_connection(privptr->conn);
+ if (privptr->fsm)
+ kfree_fsm(privptr->fsm);
+ privptr->conn = NULL; privptr->fsm = NULL;
+ /* privptr gets freed by free_netdev() */
+ }
+ free_netdev(dev);
+}
+
+/**
+ * Initialize a net device. (Called from kernel in alloc_netdev())
+ */
+static void
+netiucv_setup_netdevice(struct net_device *dev)
+{
+ memset(dev->priv, 0, sizeof(struct netiucv_priv));
+
+ dev->mtu = NETIUCV_MTU_DEFAULT;
+ dev->hard_start_xmit = netiucv_tx;
+ dev->open = netiucv_open;
+ dev->stop = netiucv_close;
+ dev->get_stats = netiucv_stats;
+ dev->change_mtu = netiucv_change_mtu;
+ dev->destructor = netiucv_free_netdevice;
+ dev->hard_header_len = NETIUCV_HDRLEN;
+ dev->addr_len = 0;
+ dev->type = ARPHRD_SLIP;
+ dev->tx_queue_len = NETIUCV_QUEUELEN_DEFAULT;
+ dev->flags = IFF_POINTOPOINT | IFF_NOARP;
+ SET_MODULE_OWNER(dev);
+}
+
+/**
+ * Allocate and initialize everything of a net device.
+ */
+static struct net_device *
+netiucv_init_netdevice(char *username)
+{
+ struct netiucv_priv *privptr;
+ struct net_device *dev;
+
+ dev = alloc_netdev(sizeof(struct netiucv_priv), "iucv%d",
+ netiucv_setup_netdevice);
+ if (!dev)
+ return NULL;
+ if (dev_alloc_name(dev, dev->name) < 0) {
+ free_netdev(dev);
+ return NULL;
+ }
+
+ privptr = (struct netiucv_priv *)dev->priv;
+ privptr->fsm = init_fsm("netiucvdev", dev_state_names,
+ dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS,
+ dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
+ if (!privptr->fsm) {
+ free_netdev(dev);
+ return NULL;
+ }
+ privptr->conn = netiucv_new_connection(dev, username);
+ if (!privptr->conn) {
+ kfree_fsm(privptr->fsm);
+ free_netdev(dev);
+ IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_new_connection\n");
+ return NULL;
+ }
+ fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
+
+ return dev;
+}
+
+static ssize_t
+conn_write(struct device_driver *drv, const char *buf, size_t count)
+{
+ char *p;
+ char username[10];
+ int i, ret;
+ struct net_device *dev;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ if (count>9) {
+ PRINT_WARN("netiucv: username too long (%d)!\n", (int)count);
+ IUCV_DBF_TEXT(setup, 2, "conn_write: too long\n");
+ return -EINVAL;
+ }
+
+ for (i=0, p=(char *)buf; i<8 && *p; i++, p++) {
+ if (isalnum(*p) || (*p == '$'))
+ username[i]= *p;
+ else if (*p == '\n') {
+ /* trailing lf, grr */
+ break;
+ } else {
+ PRINT_WARN("netiucv: Invalid character in username!\n");
+ IUCV_DBF_TEXT_(setup, 2,
+ "conn_write: invalid character %c\n", *p);
+ return -EINVAL;
+ }
+ }
+ while (i<9)
+ username[i++] = ' ';
+ username[9] = '\0';
+ dev = netiucv_init_netdevice(username);
+ if (!dev) {
+ PRINT_WARN(
+ "netiucv: Could not allocate network device structure "
+ "for user '%s'\n", netiucv_printname(username));
+ IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_init_netdevice\n");
+ return -ENODEV;
+ }
+
+ if ((ret = netiucv_register_device(dev))) {
+ IUCV_DBF_TEXT_(setup, 2,
+ "ret %d from netiucv_register_device\n", ret);
+ goto out_free_ndev;
+ }
+
+ /* sysfs magic */
+ SET_NETDEV_DEV(dev,
+ (struct device*)((struct netiucv_priv*)dev->priv)->dev);
+
+ if ((ret = register_netdev(dev))) {
+ netiucv_unregister_device((struct device*)
+ ((struct netiucv_priv*)dev->priv)->dev);
+ goto out_free_ndev;
+ }
+
+ PRINT_INFO("%s: '%s'\n", dev->name, netiucv_printname(username));
+
+ return count;
+
+out_free_ndev:
+ PRINT_WARN("netiucv: Could not register '%s'\n", dev->name);
+ IUCV_DBF_TEXT(setup, 2, "conn_write: could not register\n");
+ netiucv_free_netdevice(dev);
+ return ret;
+}
+
+DRIVER_ATTR(connection, 0200, NULL, conn_write);
+
+static ssize_t
+remove_write (struct device_driver *drv, const char *buf, size_t count)
+{
+ struct iucv_connection **clist = &iucv_connections;
+ struct net_device *ndev;
+ struct netiucv_priv *priv;
+ struct device *dev;
+ char name[IFNAMSIZ];
+ char *p;
+ int i;
+
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+
+ if (count >= IFNAMSIZ)
+ count = IFNAMSIZ-1;
+
+ for (i=0, p=(char *)buf; i<count && *p; i++, p++) {
+ if ((*p == '\n') | (*p == ' ')) {
+ /* trailing lf, grr */
+ break;
+ } else {
+ name[i]=*p;
+ }
+ }
+ name[i] = '\0';
+
+ while (*clist) {
+ ndev = (*clist)->netdev;
+ priv = (struct netiucv_priv*)ndev->priv;
+ dev = priv->dev;
+
+ if (strncmp(name, ndev->name, count)) {
+ clist = &((*clist)->next);
+ continue;
+ }
+ if (ndev->flags & (IFF_UP | IFF_RUNNING)) {
+ PRINT_WARN(
+ "netiucv: net device %s active with peer %s\n",
+ ndev->name, priv->conn->userid);
+ PRINT_WARN("netiucv: %s cannot be removed\n",
+ ndev->name);
+ IUCV_DBF_TEXT(data, 2, "remove_write: still active\n");
+ return -EBUSY;
+ }
+ unregister_netdev(ndev);
+ netiucv_unregister_device(dev);
+ return count;
+ }
+ PRINT_WARN("netiucv: net device %s unknown\n", name);
+ IUCV_DBF_TEXT(data, 2, "remove_write: unknown device\n");
+ return -EINVAL;
+}
+
+DRIVER_ATTR(remove, 0200, NULL, remove_write);
+
+static void
+netiucv_banner(void)
+{
+ char vbuf[] = "$Revision: 1.63 $";
+ char *version = vbuf;
+
+ if ((version = strchr(version, ':'))) {
+ char *p = strchr(version + 1, '$');
+ if (p)
+ *p = '\0';
+ } else
+ version = " ??? ";
+ PRINT_INFO("NETIUCV driver Version%s initialized\n", version);
+}
+
+static void __exit
+netiucv_exit(void)
+{
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ while (iucv_connections) {
+ struct net_device *ndev = iucv_connections->netdev;
+ struct netiucv_priv *priv = (struct netiucv_priv*)ndev->priv;
+ struct device *dev = priv->dev;
+
+ unregister_netdev(ndev);
+ netiucv_unregister_device(dev);
+ }
+
+ driver_remove_file(&netiucv_driver, &driver_attr_connection);
+ driver_remove_file(&netiucv_driver, &driver_attr_remove);
+ driver_unregister(&netiucv_driver);
+ iucv_unregister_dbf_views();
+
+ PRINT_INFO("NETIUCV driver unloaded\n");
+ return;
+}
+
+static int __init
+netiucv_init(void)
+{
+ int ret;
+
+ ret = iucv_register_dbf_views();
+ if (ret) {
+ PRINT_WARN("netiucv_init failed, "
+ "iucv_register_dbf_views rc = %d\n", ret);
+ return ret;
+ }
+ IUCV_DBF_TEXT(trace, 3, __FUNCTION__);
+ ret = driver_register(&netiucv_driver);
+ if (ret) {
+ PRINT_ERR("NETIUCV: failed to register driver.\n");
+ IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_register\n", ret);
+ iucv_unregister_dbf_views();
+ return ret;
+ }
+
+ /* Add entry for specifying connections. */
+ ret = driver_create_file(&netiucv_driver, &driver_attr_connection);
+ if (!ret) {
+ ret = driver_create_file(&netiucv_driver, &driver_attr_remove);
+ netiucv_banner();
+ } else {
+ PRINT_ERR("NETIUCV: failed to add driver attribute.\n");
+ IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_create_file\n", ret);
+ driver_unregister(&netiucv_driver);
+ iucv_unregister_dbf_views();
+ }
+ return ret;
+}
+
+module_init(netiucv_init);
+module_exit(netiucv_exit);
+MODULE_LICENSE("GPL");
diff --git a/drivers/s390/net/qeth.h b/drivers/s390/net/qeth.h
new file mode 100644
index 0000000..a341041
--- /dev/null
+++ b/drivers/s390/net/qeth.h
@@ -0,0 +1,1162 @@
+#ifndef __QETH_H__
+#define __QETH_H__
+
+#include <linux/if.h>
+#include <linux/if_arp.h>
+
+#include <linux/if_tr.h>
+#include <linux/trdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+
+#include <net/ipv6.h>
+#include <linux/in6.h>
+#include <net/if_inet6.h>
+#include <net/addrconf.h>
+
+
+#include <linux/bitops.h>
+
+#include <asm/debug.h>
+#include <asm/qdio.h>
+#include <asm/ccwdev.h>
+#include <asm/ccwgroup.h>
+
+#include "qeth_mpc.h"
+
+#define VERSION_QETH_H "$Revision: 1.135 $"
+
+#ifdef CONFIG_QETH_IPV6
+#define QETH_VERSION_IPV6 ":IPv6"
+#else
+#define QETH_VERSION_IPV6 ""
+#endif
+#ifdef CONFIG_QETH_VLAN
+#define QETH_VERSION_VLAN ":VLAN"
+#else
+#define QETH_VERSION_VLAN ""
+#endif
+
+/**
+ * Debug Facility stuff
+ */
+#define QETH_DBF_SETUP_NAME "qeth_setup"
+#define QETH_DBF_SETUP_LEN 8
+#define QETH_DBF_SETUP_INDEX 3
+#define QETH_DBF_SETUP_NR_AREAS 1
+#define QETH_DBF_SETUP_LEVEL 5
+
+#define QETH_DBF_MISC_NAME "qeth_misc"
+#define QETH_DBF_MISC_LEN 128
+#define QETH_DBF_MISC_INDEX 1
+#define QETH_DBF_MISC_NR_AREAS 1
+#define QETH_DBF_MISC_LEVEL 2
+
+#define QETH_DBF_DATA_NAME "qeth_data"
+#define QETH_DBF_DATA_LEN 96
+#define QETH_DBF_DATA_INDEX 3
+#define QETH_DBF_DATA_NR_AREAS 1
+#define QETH_DBF_DATA_LEVEL 2
+
+#define QETH_DBF_CONTROL_NAME "qeth_control"
+#define QETH_DBF_CONTROL_LEN 256
+#define QETH_DBF_CONTROL_INDEX 3
+#define QETH_DBF_CONTROL_NR_AREAS 2
+#define QETH_DBF_CONTROL_LEVEL 5
+
+#define QETH_DBF_TRACE_NAME "qeth_trace"
+#define QETH_DBF_TRACE_LEN 8
+#define QETH_DBF_TRACE_INDEX 2
+#define QETH_DBF_TRACE_NR_AREAS 2
+#define QETH_DBF_TRACE_LEVEL 3
+extern debug_info_t *qeth_dbf_trace;
+
+#define QETH_DBF_SENSE_NAME "qeth_sense"
+#define QETH_DBF_SENSE_LEN 64
+#define QETH_DBF_SENSE_INDEX 1
+#define QETH_DBF_SENSE_NR_AREAS 1
+#define QETH_DBF_SENSE_LEVEL 2
+
+#define QETH_DBF_QERR_NAME "qeth_qerr"
+#define QETH_DBF_QERR_LEN 8
+#define QETH_DBF_QERR_INDEX 1
+#define QETH_DBF_QERR_NR_AREAS 2
+#define QETH_DBF_QERR_LEVEL 2
+
+#define QETH_DBF_TEXT(name,level,text) \
+ do { \
+ debug_text_event(qeth_dbf_##name,level,text); \
+ } while (0)
+
+#define QETH_DBF_HEX(name,level,addr,len) \
+ do { \
+ debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
+ } while (0)
+
+DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);
+
+#define QETH_DBF_TEXT_(name,level,text...) \
+ do { \
+ char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf); \
+ sprintf(dbf_txt_buf, text); \
+ debug_text_event(qeth_dbf_##name,level,dbf_txt_buf); \
+ put_cpu_var(qeth_dbf_txt_buf); \
+ } while (0)
+
+#define QETH_DBF_SPRINTF(name,level,text...) \
+ do { \
+ debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
+ debug_sprintf_event(qeth_dbf_trace, level, text ); \
+ } while (0)
+
+/**
+ * some more debug stuff
+ */
+#define PRINTK_HEADER "qeth: "
+
+#define HEXDUMP16(importance,header,ptr) \
+PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
+ *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
+ *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
+ *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
+ *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
+ *(((char*)ptr)+12),*(((char*)ptr)+13), \
+ *(((char*)ptr)+14),*(((char*)ptr)+15)); \
+PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
+ *(((char*)ptr)+16),*(((char*)ptr)+17), \
+ *(((char*)ptr)+18),*(((char*)ptr)+19), \
+ *(((char*)ptr)+20),*(((char*)ptr)+21), \
+ *(((char*)ptr)+22),*(((char*)ptr)+23), \
+ *(((char*)ptr)+24),*(((char*)ptr)+25), \
+ *(((char*)ptr)+26),*(((char*)ptr)+27), \
+ *(((char*)ptr)+28),*(((char*)ptr)+29), \
+ *(((char*)ptr)+30),*(((char*)ptr)+31));
+
+static inline void
+qeth_hex_dump(unsigned char *buf, size_t len)
+{
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ if (i && !(i % 16))
+ printk("\n");
+ printk("%02x ", *(buf + i));
+ }
+ printk("\n");
+}
+
+#define SENSE_COMMAND_REJECT_BYTE 0
+#define SENSE_COMMAND_REJECT_FLAG 0x80
+#define SENSE_RESETTING_EVENT_BYTE 1
+#define SENSE_RESETTING_EVENT_FLAG 0x80
+
+#define atomic_swap(a,b) xchg((int *)a.counter, b)
+
+/*
+ * Common IO related definitions
+ */
+extern struct device *qeth_root_dev;
+extern struct ccw_driver qeth_ccw_driver;
+extern struct ccwgroup_driver qeth_ccwgroup_driver;
+
+#define CARD_RDEV(card) card->read.ccwdev
+#define CARD_WDEV(card) card->write.ccwdev
+#define CARD_DDEV(card) card->data.ccwdev
+#define CARD_BUS_ID(card) card->gdev->dev.bus_id
+#define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
+#define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
+#define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
+#define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id
+
+#define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
+ ((struct ccwgroup_device *)cdev->dev.driver_data)\
+ ->dev.driver_data;
+
+/**
+ * card stuff
+ */
+#ifdef CONFIG_QETH_PERF_STATS
+struct qeth_perf_stats {
+ unsigned int bufs_rec;
+ unsigned int bufs_sent;
+
+ unsigned int skbs_sent_pack;
+ unsigned int bufs_sent_pack;
+
+ unsigned int sc_dp_p;
+ unsigned int sc_p_dp;
+ /* qdio_input_handler: number of times called, time spent in */
+ __u64 inbound_start_time;
+ unsigned int inbound_cnt;
+ unsigned int inbound_time;
+ /* qeth_send_packet: number of times called, time spent in */
+ __u64 outbound_start_time;
+ unsigned int outbound_cnt;
+ unsigned int outbound_time;
+ /* qdio_output_handler: number of times called, time spent in */
+ __u64 outbound_handler_start_time;
+ unsigned int outbound_handler_cnt;
+ unsigned int outbound_handler_time;
+ /* number of calls to and time spent in do_QDIO for inbound queue */
+ __u64 inbound_do_qdio_start_time;
+ unsigned int inbound_do_qdio_cnt;
+ unsigned int inbound_do_qdio_time;
+ /* number of calls to and time spent in do_QDIO for outbound queues */
+ __u64 outbound_do_qdio_start_time;
+ unsigned int outbound_do_qdio_cnt;
+ unsigned int outbound_do_qdio_time;
+ /* eddp data */
+ unsigned int large_send_bytes;
+ unsigned int large_send_cnt;
+ unsigned int sg_skbs_sent;
+ unsigned int sg_frags_sent;
+};
+#endif /* CONFIG_QETH_PERF_STATS */
+
+/* Routing stuff */
+struct qeth_routing_info {
+ enum qeth_routing_types type;
+};
+
+/* IPA stuff */
+struct qeth_ipa_info {
+ __u32 supported_funcs;
+ __u32 enabled_funcs;
+};
+
+static inline int
+qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
+{
+ return (ipa->supported_funcs & func);
+}
+
+static inline int
+qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
+{
+ return (ipa->supported_funcs & ipa->enabled_funcs & func);
+}
+
+#define qeth_adp_supported(c,f) \
+ qeth_is_ipa_supported(&c->options.adp, f)
+#define qeth_adp_enabled(c,f) \
+ qeth_is_ipa_enabled(&c->options.adp, f)
+#define qeth_is_supported(c,f) \
+ qeth_is_ipa_supported(&c->options.ipa4, f)
+#define qeth_is_enabled(c,f) \
+ qeth_is_ipa_enabled(&c->options.ipa4, f)
+#ifdef CONFIG_QETH_IPV6
+#define qeth_is_supported6(c,f) \
+ qeth_is_ipa_supported(&c->options.ipa6, f)
+#define qeth_is_enabled6(c,f) \
+ qeth_is_ipa_enabled(&c->options.ipa6, f)
+#else /* CONFIG_QETH_IPV6 */
+#define qeth_is_supported6(c,f) 0
+#define qeth_is_enabled6(c,f) 0
+#endif /* CONFIG_QETH_IPV6 */
+#define qeth_is_ipafunc_supported(c,prot,f) \
+ (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
+#define qeth_is_ipafunc_enabled(c,prot,f) \
+ (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)
+
+
+#define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
+#define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
+#define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
+#define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108
+
+#define QETH_MODELLIST_ARRAY \
+ {{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
+ QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
+ QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
+ QETH_MAX_QUEUES,0}, \
+ {0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
+ QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
+ QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
+ QETH_MAX_QUEUES,0x103}, \
+ {0,0,0,0,0,0,0,0,0}}
+
+#define QETH_REAL_CARD 1
+#define QETH_VLAN_CARD 2
+#define QETH_BUFSIZE 4096
+
+/**
+ * some more defs
+ */
+#define IF_NAME_LEN 16
+#define QETH_TX_TIMEOUT 100 * HZ
+#define QETH_HEADER_SIZE 32
+#define MAX_PORTNO 15
+#define QETH_FAKE_LL_LEN ETH_HLEN
+#define QETH_FAKE_LL_V6_ADDR_POS 24
+
+/*IPv6 address autoconfiguration stuff*/
+#define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
+#define UNIQUE_ID_NOT_BY_CARD 0x10000
+
+/*****************************************************************************/
+/* QDIO queue and buffer handling */
+/*****************************************************************************/
+#define QETH_MAX_QUEUES 4
+#define QETH_IN_BUF_SIZE_DEFAULT 65536
+#define QETH_IN_BUF_COUNT_DEFAULT 16
+#define QETH_IN_BUF_COUNT_MIN 8
+#define QETH_IN_BUF_COUNT_MAX 128
+#define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
+#define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
+ ((card)->qdio.in_buf_pool.buf_count / 2)
+
+/* buffers we have to be behind before we get a PCI */
+#define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
+/*enqueued free buffers left before we get a PCI*/
+#define QETH_PCI_THRESHOLD_B(card) 0
+/*not used unless the microcode gets patched*/
+#define QETH_PCI_TIMER_VALUE(card) 3
+
+#define QETH_MIN_INPUT_THRESHOLD 1
+#define QETH_MAX_INPUT_THRESHOLD 500
+#define QETH_MIN_OUTPUT_THRESHOLD 1
+#define QETH_MAX_OUTPUT_THRESHOLD 300
+
+/* priority queing */
+#define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
+#define QETH_DEFAULT_QUEUE 2
+#define QETH_NO_PRIO_QUEUEING 0
+#define QETH_PRIO_Q_ING_PREC 1
+#define QETH_PRIO_Q_ING_TOS 2
+#define IP_TOS_LOWDELAY 0x10
+#define IP_TOS_HIGHTHROUGHPUT 0x08
+#define IP_TOS_HIGHRELIABILITY 0x04
+#define IP_TOS_NOTIMPORTANT 0x02
+
+/* Packing */
+#define QETH_LOW_WATERMARK_PACK 2
+#define QETH_HIGH_WATERMARK_PACK 5
+#define QETH_WATERMARK_PACK_FUZZ 1
+
+#define QETH_IP_HEADER_SIZE 40
+
+struct qeth_hdr_layer3 {
+ __u8 id;
+ __u8 flags;
+ __u16 inbound_checksum; /*TSO:__u16 seqno */
+ __u32 token; /*TSO: __u32 reserved */
+ __u16 length;
+ __u8 vlan_prio;
+ __u8 ext_flags;
+ __u16 vlan_id;
+ __u16 frame_offset;
+ __u8 dest_addr[16];
+} __attribute__ ((packed));
+
+struct qeth_hdr_layer2 {
+ __u8 id;
+ __u8 flags[3];
+ __u8 port_no;
+ __u8 hdr_length;
+ __u16 pkt_length;
+ __u16 seq_no;
+ __u16 vlan_id;
+ __u32 reserved;
+ __u8 reserved2[16];
+} __attribute__ ((packed));
+
+struct qeth_hdr {
+ union {
+ struct qeth_hdr_layer2 l2;
+ struct qeth_hdr_layer3 l3;
+ } hdr;
+} __attribute__ ((packed));
+
+
+/* flags for qeth_hdr.flags */
+#define QETH_HDR_PASSTHRU 0x10
+#define QETH_HDR_IPV6 0x80
+#define QETH_HDR_CAST_MASK 0x07
+enum qeth_cast_flags {
+ QETH_CAST_UNICAST = 0x06,
+ QETH_CAST_MULTICAST = 0x04,
+ QETH_CAST_BROADCAST = 0x05,
+ QETH_CAST_ANYCAST = 0x07,
+ QETH_CAST_NOCAST = 0x00,
+};
+
+enum qeth_layer2_frame_flags {
+ QETH_LAYER2_FLAG_MULTICAST = 0x01,
+ QETH_LAYER2_FLAG_BROADCAST = 0x02,
+ QETH_LAYER2_FLAG_UNICAST = 0x04,
+ QETH_LAYER2_FLAG_VLAN = 0x10,
+};
+
+enum qeth_header_ids {
+ QETH_HEADER_TYPE_LAYER3 = 0x01,
+ QETH_HEADER_TYPE_LAYER2 = 0x02,
+ QETH_HEADER_TYPE_TSO = 0x03,
+};
+/* flags for qeth_hdr.ext_flags */
+#define QETH_HDR_EXT_VLAN_FRAME 0x01
+#define QETH_HDR_EXT_TOKEN_ID 0x02
+#define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
+#define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
+#define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
+#define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
+#define QETH_HDR_EXT_UDP_TSO 0x40 /*bit off for TCP*/
+
+static inline int
+qeth_is_last_sbale(struct qdio_buffer_element *sbale)
+{
+ return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
+}
+
+enum qeth_qdio_buffer_states {
+ /*
+ * inbound: read out by driver; owned by hardware in order to be filled
+ * outbound: owned by driver in order to be filled
+ */
+ QETH_QDIO_BUF_EMPTY,
+ /*
+ * inbound: filled by hardware; owned by driver in order to be read out
+ * outbound: filled by driver; owned by hardware in order to be sent
+ */
+ QETH_QDIO_BUF_PRIMED,
+};
+
+enum qeth_qdio_info_states {
+ QETH_QDIO_UNINITIALIZED,
+ QETH_QDIO_ALLOCATED,
+ QETH_QDIO_ESTABLISHED,
+};
+
+struct qeth_buffer_pool_entry {
+ struct list_head list;
+ struct list_head init_list;
+ void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
+};
+
+struct qeth_qdio_buffer_pool {
+ struct list_head entry_list;
+ int buf_count;
+};
+
+struct qeth_qdio_buffer {
+ struct qdio_buffer *buffer;
+ volatile enum qeth_qdio_buffer_states state;
+ /* the buffer pool entry currently associated to this buffer */
+ struct qeth_buffer_pool_entry *pool_entry;
+};
+
+struct qeth_qdio_q {
+ struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
+ struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
+ /*
+ * buf_to_init means "buffer must be initialized by driver and must
+ * be made available for hardware" -> state is set to EMPTY
+ */
+ volatile int next_buf_to_init;
+} __attribute__ ((aligned(256)));
+
+/* possible types of qeth large_send support */
+enum qeth_large_send_types {
+ QETH_LARGE_SEND_NO,
+ QETH_LARGE_SEND_EDDP,
+ QETH_LARGE_SEND_TSO,
+};
+
+struct qeth_qdio_out_buffer {
+ struct qdio_buffer *buffer;
+ atomic_t state;
+ volatile int next_element_to_fill;
+ struct sk_buff_head skb_list;
+ struct list_head ctx_list;
+};
+
+struct qeth_card;
+
+enum qeth_out_q_states {
+ QETH_OUT_Q_UNLOCKED,
+ QETH_OUT_Q_LOCKED,
+ QETH_OUT_Q_LOCKED_FLUSH,
+};
+
+struct qeth_qdio_out_q {
+ struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
+ struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
+ int queue_no;
+ struct qeth_card *card;
+ atomic_t state;
+ volatile int do_pack;
+ /*
+ * index of buffer to be filled by driver; state EMPTY or PACKING
+ */
+ volatile int next_buf_to_fill;
+ /*
+ * number of buffers that are currently filled (PRIMED)
+ * -> these buffers are hardware-owned
+ */
+ atomic_t used_buffers;
+ /* indicates whether PCI flag must be set (or if one is outstanding) */
+ atomic_t set_pci_flags_count;
+} __attribute__ ((aligned(256)));
+
+struct qeth_qdio_info {
+ volatile enum qeth_qdio_info_states state;
+ /* input */
+ struct qeth_qdio_q *in_q;
+ struct qeth_qdio_buffer_pool in_buf_pool;
+ struct qeth_qdio_buffer_pool init_pool;
+ int in_buf_size;
+
+ /* output */
+ int no_out_queues;
+ struct qeth_qdio_out_q **out_qs;
+
+ /* priority queueing */
+ int do_prio_queueing;
+ int default_out_queue;
+};
+
+enum qeth_send_errors {
+ QETH_SEND_ERROR_NONE,
+ QETH_SEND_ERROR_LINK_FAILURE,
+ QETH_SEND_ERROR_RETRY,
+ QETH_SEND_ERROR_KICK_IT,
+};
+
+#define QETH_ETH_MAC_V4 0x0100 /* like v4 */
+#define QETH_ETH_MAC_V6 0x3333 /* like v6 */
+/* tr mc mac is longer, but that will be enough to detect mc frames */
+#define QETH_TR_MAC_NC 0xc000 /* non-canonical */
+#define QETH_TR_MAC_C 0x0300 /* canonical */
+
+#define DEFAULT_ADD_HHLEN 0
+#define MAX_ADD_HHLEN 1024
+
+/**
+ * buffer stuff for read channel
+ */
+#define QETH_CMD_BUFFER_NO 8
+
+/**
+ * channel state machine
+ */
+enum qeth_channel_states {
+ CH_STATE_UP,
+ CH_STATE_DOWN,
+ CH_STATE_ACTIVATING,
+ CH_STATE_HALTED,
+ CH_STATE_STOPPED,
+};
+/**
+ * card state machine
+ */
+enum qeth_card_states {
+ CARD_STATE_DOWN,
+ CARD_STATE_HARDSETUP,
+ CARD_STATE_SOFTSETUP,
+ CARD_STATE_UP,
+ CARD_STATE_RECOVER,
+};
+
+/**
+ * Protocol versions
+ */
+enum qeth_prot_versions {
+ QETH_PROT_SNA = 0x0001,
+ QETH_PROT_IPV4 = 0x0004,
+ QETH_PROT_IPV6 = 0x0006,
+};
+
+enum qeth_ip_types {
+ QETH_IP_TYPE_NORMAL,
+ QETH_IP_TYPE_VIPA,
+ QETH_IP_TYPE_RXIP,
+ QETH_IP_TYPE_DEL_ALL_MC,
+};
+
+enum qeth_cmd_buffer_state {
+ BUF_STATE_FREE,
+ BUF_STATE_LOCKED,
+ BUF_STATE_PROCESSED,
+};
+/**
+ * IP address and multicast list
+ */
+struct qeth_ipaddr {
+ struct list_head entry;
+ enum qeth_ip_types type;
+ enum qeth_ipa_setdelip_flags set_flags;
+ enum qeth_ipa_setdelip_flags del_flags;
+ int is_multicast;
+ volatile int users;
+ enum qeth_prot_versions proto;
+ unsigned char mac[OSA_ADDR_LEN];
+ union {
+ struct {
+ unsigned int addr;
+ unsigned int mask;
+ } a4;
+ struct {
+ struct in6_addr addr;
+ unsigned int pfxlen;
+ } a6;
+ } u;
+};
+
+struct qeth_ipato_entry {
+ struct list_head entry;
+ enum qeth_prot_versions proto;
+ char addr[16];
+ int mask_bits;
+};
+
+struct qeth_ipato {
+ int enabled;
+ int invert4;
+ int invert6;
+ struct list_head entries;
+};
+
+struct qeth_channel;
+
+struct qeth_cmd_buffer {
+ enum qeth_cmd_buffer_state state;
+ struct qeth_channel *channel;
+ unsigned char *data;
+ int rc;
+ void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
+};
+
+
+/**
+ * definition of a qeth channel, used for read and write
+ */
+struct qeth_channel {
+ enum qeth_channel_states state;
+ struct ccw1 ccw;
+ spinlock_t iob_lock;
+ wait_queue_head_t wait_q;
+ struct tasklet_struct irq_tasklet;
+ struct ccw_device *ccwdev;
+/*command buffer for control data*/
+ struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
+ atomic_t irq_pending;
+ volatile int io_buf_no;
+ volatile int buf_no;
+};
+
+/**
+ * OSA card related definitions
+ */
+struct qeth_token {
+ __u32 issuer_rm_w;
+ __u32 issuer_rm_r;
+ __u32 cm_filter_w;
+ __u32 cm_filter_r;
+ __u32 cm_connection_w;
+ __u32 cm_connection_r;
+ __u32 ulp_filter_w;
+ __u32 ulp_filter_r;
+ __u32 ulp_connection_w;
+ __u32 ulp_connection_r;
+};
+
+struct qeth_seqno {
+ __u32 trans_hdr;
+ __u32 pdu_hdr;
+ __u32 pdu_hdr_ack;
+ __u16 ipa;
+};
+
+struct qeth_reply {
+ struct list_head list;
+ wait_queue_head_t wait_q;
+ int (*callback)(struct qeth_card *,struct qeth_reply *,unsigned long);
+ u32 seqno;
+ unsigned long offset;
+ int received;
+ int rc;
+ void *param;
+ struct qeth_card *card;
+ atomic_t refcnt;
+};
+
+#define QETH_BROADCAST_WITH_ECHO 1
+#define QETH_BROADCAST_WITHOUT_ECHO 2
+
+struct qeth_card_blkt {
+ int time_total;
+ int inter_packet;
+ int inter_packet_jumbo;
+};
+
+
+
+struct qeth_card_info {
+ unsigned short unit_addr2;
+ unsigned short cula;
+ unsigned short chpid;
+ __u16 func_level;
+ char mcl_level[QETH_MCL_LENGTH + 1];
+ int guestlan;
+ int layer2_mac_registered;
+ int portname_required;
+ int portno;
+ char portname[9];
+ enum qeth_card_types type;
+ enum qeth_link_types link_type;
+ int is_multicast_different;
+ int initial_mtu;
+ int max_mtu;
+ int broadcast_capable;
+ int unique_id;
+ struct qeth_card_blkt blkt;
+ __u32 csum_mask;
+};
+
+struct qeth_card_options {
+ struct qeth_routing_info route4;
+ struct qeth_ipa_info ipa4;
+ struct qeth_ipa_info adp; /*Adapter parameters*/
+#ifdef CONFIG_QETH_IPV6
+ struct qeth_routing_info route6;
+ struct qeth_ipa_info ipa6;
+#endif /* QETH_IPV6 */
+ enum qeth_checksum_types checksum_type;
+ int broadcast_mode;
+ int macaddr_mode;
+ int fake_broadcast;
+ int add_hhlen;
+ int fake_ll;
+ int layer2;
+ enum qeth_large_send_types large_send;
+};
+
+/*
+ * thread bits for qeth_card thread masks
+ */
+enum qeth_threads {
+ QETH_SET_IP_THREAD = 1,
+ QETH_RECOVER_THREAD = 2,
+};
+
+struct qeth_card {
+ struct list_head list;
+ enum qeth_card_states state;
+ int lan_online;
+ spinlock_t lock;
+/*hardware and sysfs stuff*/
+ struct ccwgroup_device *gdev;
+ struct qeth_channel read;
+ struct qeth_channel write;
+ struct qeth_channel data;
+
+ struct net_device *dev;
+ struct net_device_stats stats;
+
+ struct qeth_card_info info;
+ struct qeth_token token;
+ struct qeth_seqno seqno;
+ struct qeth_card_options options;
+
+ wait_queue_head_t wait_q;
+#ifdef CONFIG_QETH_VLAN
+ spinlock_t vlanlock;
+ struct vlan_group *vlangrp;
+#endif
+ struct work_struct kernel_thread_starter;
+ spinlock_t thread_mask_lock;
+ volatile unsigned long thread_start_mask;
+ volatile unsigned long thread_allowed_mask;
+ volatile unsigned long thread_running_mask;
+ spinlock_t ip_lock;
+ struct list_head ip_list;
+ struct list_head *ip_tbd_list;
+ struct qeth_ipato ipato;
+ struct list_head cmd_waiter_list;
+ /* QDIO buffer handling */
+ struct qeth_qdio_info qdio;
+#ifdef CONFIG_QETH_PERF_STATS
+ struct qeth_perf_stats perf_stats;
+#endif /* CONFIG_QETH_PERF_STATS */
+ int use_hard_stop;
+ int (*orig_hard_header)(struct sk_buff *,struct net_device *,
+ unsigned short,void *,void *,unsigned);
+};
+
+struct qeth_card_list_struct {
+ struct list_head list;
+ rwlock_t rwlock;
+};
+
+extern struct qeth_card_list_struct qeth_card_list;
+
+/*notifier list */
+struct qeth_notify_list_struct {
+ struct list_head list;
+ struct task_struct *task;
+ int signum;
+};
+extern spinlock_t qeth_notify_lock;
+extern struct list_head qeth_notify_list;
+
+/*some helper functions*/
+
+#define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
+
+inline static __u8
+qeth_get_ipa_adp_type(enum qeth_link_types link_type)
+{
+ switch (link_type) {
+ case QETH_LINK_TYPE_HSTR:
+ return 2;
+ default:
+ return 1;
+ }
+}
+
+inline static int
+qeth_realloc_headroom(struct qeth_card *card, struct sk_buff **skb, int size)
+{
+ struct sk_buff *new_skb = NULL;
+
+ if (skb_headroom(*skb) < size){
+ new_skb = skb_realloc_headroom(*skb, size);
+ if (!new_skb) {
+ PRINT_ERR("qeth_prepare_skb: could "
+ "not realloc headroom for qeth_hdr "
+ "on interface %s", QETH_CARD_IFNAME(card));
+ return -ENOMEM;
+ }
+ *skb = new_skb;
+ }
+ return 0;
+}
+static inline struct sk_buff *
+qeth_pskb_unshare(struct sk_buff *skb, int pri)
+{
+ struct sk_buff *nskb;
+ if (!skb_cloned(skb))
+ return skb;
+ nskb = skb_copy(skb, pri);
+ kfree_skb(skb); /* free our shared copy */
+ return nskb;
+}
+
+
+inline static void *
+qeth_push_skb(struct qeth_card *card, struct sk_buff **skb, int size)
+{
+ void *hdr;
+
+ hdr = (void *) skb_push(*skb, size);
+ /*
+ * sanity check, the Linux memory allocation scheme should
+ * never present us cases like this one (the qdio header size plus
+ * the first 40 bytes of the paket cross a 4k boundary)
+ */
+ if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
+ (((unsigned long) hdr + size +
+ QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
+ PRINT_ERR("qeth_prepare_skb: misaligned "
+ "packet on interface %s. Discarded.",
+ QETH_CARD_IFNAME(card));
+ return NULL;
+ }
+ return hdr;
+}
+
+inline static int
+qeth_get_hlen(__u8 link_type)
+{
+#ifdef CONFIG_QETH_IPV6
+ switch (link_type) {
+ case QETH_LINK_TYPE_HSTR:
+ case QETH_LINK_TYPE_LANE_TR:
+ return sizeof(struct qeth_hdr) + TR_HLEN;
+ default:
+#ifdef CONFIG_QETH_VLAN
+ return sizeof(struct qeth_hdr) + VLAN_ETH_HLEN;
+#else
+ return sizeof(struct qeth_hdr) + ETH_HLEN;
+#endif
+ }
+#else /* CONFIG_QETH_IPV6 */
+#ifdef CONFIG_QETH_VLAN
+ return sizeof(struct qeth_hdr) + VLAN_HLEN;
+#else
+ return sizeof(struct qeth_hdr);
+#endif
+#endif /* CONFIG_QETH_IPV6 */
+}
+
+inline static unsigned short
+qeth_get_netdev_flags(struct qeth_card *card)
+{
+ if (card->options.layer2)
+ return 0;
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_IQD:
+ return IFF_NOARP;
+#ifdef CONFIG_QETH_IPV6
+ default:
+ return 0;
+#else
+ default:
+ return IFF_NOARP;
+#endif
+ }
+}
+
+inline static int
+qeth_get_initial_mtu_for_card(struct qeth_card * card)
+{
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_UNKNOWN:
+ return 1500;
+ case QETH_CARD_TYPE_IQD:
+ return card->info.max_mtu;
+ case QETH_CARD_TYPE_OSAE:
+ switch (card->info.link_type) {
+ case QETH_LINK_TYPE_HSTR:
+ case QETH_LINK_TYPE_LANE_TR:
+ return 2000;
+ default:
+ return 1492;
+ }
+ default:
+ return 1500;
+ }
+}
+
+inline static int
+qeth_get_max_mtu_for_card(int cardtype)
+{
+ switch (cardtype) {
+ case QETH_CARD_TYPE_UNKNOWN:
+ return 61440;
+ case QETH_CARD_TYPE_OSAE:
+ return 61440;
+ case QETH_CARD_TYPE_IQD:
+ return 57344;
+ default:
+ return 1500;
+ }
+}
+
+inline static int
+qeth_get_mtu_out_of_mpc(int cardtype)
+{
+ switch (cardtype) {
+ case QETH_CARD_TYPE_IQD:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+inline static int
+qeth_get_mtu_outof_framesize(int framesize)
+{
+ switch (framesize) {
+ case 0x4000:
+ return 8192;
+ case 0x6000:
+ return 16384;
+ case 0xa000:
+ return 32768;
+ case 0xffff:
+ return 57344;
+ default:
+ return 0;
+ }
+}
+
+inline static int
+qeth_mtu_is_valid(struct qeth_card * card, int mtu)
+{
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_OSAE:
+ return ((mtu >= 576) && (mtu <= 61440));
+ case QETH_CARD_TYPE_IQD:
+ return ((mtu >= 576) &&
+ (mtu <= card->info.max_mtu + 4096 - 32));
+ case QETH_CARD_TYPE_UNKNOWN:
+ default:
+ return 1;
+ }
+}
+
+inline static int
+qeth_get_arphdr_type(int cardtype, int linktype)
+{
+ switch (cardtype) {
+ case QETH_CARD_TYPE_OSAE:
+ switch (linktype) {
+ case QETH_LINK_TYPE_LANE_TR:
+ case QETH_LINK_TYPE_HSTR:
+ return ARPHRD_IEEE802_TR;
+ default:
+ return ARPHRD_ETHER;
+ }
+ case QETH_CARD_TYPE_IQD:
+ default:
+ return ARPHRD_ETHER;
+ }
+}
+
+#ifdef CONFIG_QETH_PERF_STATS
+inline static int
+qeth_get_micros(void)
+{
+ return (int) (get_clock() >> 12);
+}
+#endif
+
+static inline int
+qeth_get_qdio_q_format(struct qeth_card *card)
+{
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_IQD:
+ return 2;
+ default:
+ return 0;
+ }
+}
+
+static inline void
+qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
+{
+ sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
+}
+
+static inline int
+qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
+{
+ const char *start, *end;
+ char abuf[4];
+ char *tmp;
+ int len;
+ int i;
+
+ start = buf;
+ for (i = 0; i < 3; i++) {
+ if (!(end = strchr(start, '.')))
+ return -EINVAL;
+ len = end - start;
+ memset(abuf, 0, 4);
+ strncpy(abuf, start, len);
+ addr[i] = simple_strtoul(abuf, &tmp, 10);
+ start = end + 1;
+ }
+ memset(abuf, 0, 4);
+ strcpy(abuf, start);
+ addr[3] = simple_strtoul(abuf, &tmp, 10);
+ return 0;
+}
+
+static inline void
+qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
+{
+ sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
+ ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
+ addr[0], addr[1], addr[2], addr[3],
+ addr[4], addr[5], addr[6], addr[7],
+ addr[8], addr[9], addr[10], addr[11],
+ addr[12], addr[13], addr[14], addr[15]);
+}
+
+static inline int
+qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
+{
+ const char *start, *end;
+ u16 *tmp_addr;
+ char abuf[5];
+ char *tmp;
+ int len;
+ int i;
+
+ tmp_addr = (u16 *)addr;
+ start = buf;
+ for (i = 0; i < 7; i++) {
+ if (!(end = strchr(start, ':')))
+ return -EINVAL;
+ len = end - start;
+ memset(abuf, 0, 5);
+ strncpy(abuf, start, len);
+ tmp_addr[i] = simple_strtoul(abuf, &tmp, 16);
+ start = end + 1;
+ }
+ memset(abuf, 0, 5);
+ strcpy(abuf, start);
+ tmp_addr[7] = simple_strtoul(abuf, &tmp, 16);
+ return 0;
+}
+
+static inline void
+qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
+ char *buf)
+{
+ if (proto == QETH_PROT_IPV4)
+ return qeth_ipaddr4_to_string(addr, buf);
+ else if (proto == QETH_PROT_IPV6)
+ return qeth_ipaddr6_to_string(addr, buf);
+}
+
+static inline int
+qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
+ __u8 *addr)
+{
+ if (proto == QETH_PROT_IPV4)
+ return qeth_string_to_ipaddr4(buf, addr);
+ else if (proto == QETH_PROT_IPV6)
+ return qeth_string_to_ipaddr6(buf, addr);
+ else
+ return -EINVAL;
+}
+
+extern int
+qeth_setrouting_v4(struct qeth_card *);
+extern int
+qeth_setrouting_v6(struct qeth_card *);
+
+extern int
+qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
+
+extern void
+qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);
+
+extern int
+qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
+
+extern void
+qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
+
+extern int
+qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
+
+extern void
+qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
+
+extern int
+qeth_notifier_register(struct task_struct *, int );
+
+extern int
+qeth_notifier_unregister(struct task_struct * );
+
+extern void
+qeth_schedule_recovery(struct qeth_card *);
+
+extern int
+qeth_realloc_buffer_pool(struct qeth_card *, int);
+
+extern int
+qeth_set_large_send(struct qeth_card *);
+
+extern void
+qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
+ struct sk_buff *, int, int);
+extern void
+qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
+
+#endif /* __QETH_H__ */
diff --git a/drivers/s390/net/qeth_eddp.c b/drivers/s390/net/qeth_eddp.c
new file mode 100644
index 0000000..7ee1c06
--- /dev/null
+++ b/drivers/s390/net/qeth_eddp.c
@@ -0,0 +1,643 @@
+/*
+ *
+ * linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.11 $)
+ *
+ * Enhanced Device Driver Packing (EDDP) support for the qeth driver.
+ *
+ * Copyright 2004 IBM Corporation
+ *
+ * Author(s): Thomas Spatzier <tspat@de.ibm.com>
+ *
+ * $Revision: 1.11 $ $Date: 2005/03/24 09:04:18 $
+ *
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/ip.h>
+#include <linux/inetdevice.h>
+#include <linux/netdevice.h>
+#include <linux/kernel.h>
+#include <linux/tcp.h>
+#include <net/tcp.h>
+#include <linux/skbuff.h>
+
+#include <net/ip.h>
+
+#include "qeth.h"
+#include "qeth_mpc.h"
+#include "qeth_eddp.h"
+
+int
+qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *queue,
+ struct qeth_eddp_context *ctx)
+{
+ int index = queue->next_buf_to_fill;
+ int elements_needed = ctx->num_elements;
+ int elements_in_buffer;
+ int skbs_in_buffer;
+ int buffers_needed = 0;
+
+ QETH_DBF_TEXT(trace, 5, "eddpcbfc");
+ while(elements_needed > 0) {
+ buffers_needed++;
+ if (atomic_read(&queue->bufs[index].state) !=
+ QETH_QDIO_BUF_EMPTY)
+ return -EBUSY;
+
+ elements_in_buffer = QETH_MAX_BUFFER_ELEMENTS(queue->card) -
+ queue->bufs[index].next_element_to_fill;
+ skbs_in_buffer = elements_in_buffer / ctx->elements_per_skb;
+ elements_needed -= skbs_in_buffer * ctx->elements_per_skb;
+ index = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
+ }
+ return buffers_needed;
+}
+
+static inline void
+qeth_eddp_free_context(struct qeth_eddp_context *ctx)
+{
+ int i;
+
+ QETH_DBF_TEXT(trace, 5, "eddpfctx");
+ for (i = 0; i < ctx->num_pages; ++i)
+ free_page((unsigned long)ctx->pages[i]);
+ kfree(ctx->pages);
+ if (ctx->elements != NULL)
+ kfree(ctx->elements);
+ kfree(ctx);
+}
+
+
+static inline void
+qeth_eddp_get_context(struct qeth_eddp_context *ctx)
+{
+ atomic_inc(&ctx->refcnt);
+}
+
+void
+qeth_eddp_put_context(struct qeth_eddp_context *ctx)
+{
+ if (atomic_dec_return(&ctx->refcnt) == 0)
+ qeth_eddp_free_context(ctx);
+}
+
+void
+qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf)
+{
+ struct qeth_eddp_context_reference *ref;
+
+ QETH_DBF_TEXT(trace, 6, "eddprctx");
+ while (!list_empty(&buf->ctx_list)){
+ ref = list_entry(buf->ctx_list.next,
+ struct qeth_eddp_context_reference, list);
+ qeth_eddp_put_context(ref->ctx);
+ list_del(&ref->list);
+ kfree(ref);
+ }
+}
+
+static inline int
+qeth_eddp_buf_ref_context(struct qeth_qdio_out_buffer *buf,
+ struct qeth_eddp_context *ctx)
+{
+ struct qeth_eddp_context_reference *ref;
+
+ QETH_DBF_TEXT(trace, 6, "eddprfcx");
+ ref = kmalloc(sizeof(struct qeth_eddp_context_reference), GFP_ATOMIC);
+ if (ref == NULL)
+ return -ENOMEM;
+ qeth_eddp_get_context(ctx);
+ ref->ctx = ctx;
+ list_add_tail(&ref->list, &buf->ctx_list);
+ return 0;
+}
+
+int
+qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
+ struct qeth_eddp_context *ctx,
+ int index)
+{
+ struct qeth_qdio_out_buffer *buf = NULL;
+ struct qdio_buffer *buffer;
+ int elements = ctx->num_elements;
+ int element = 0;
+ int flush_cnt = 0;
+ int must_refcnt = 1;
+ int i;
+
+ QETH_DBF_TEXT(trace, 5, "eddpfibu");
+ while (elements > 0) {
+ buf = &queue->bufs[index];
+ if (atomic_read(&buf->state) != QETH_QDIO_BUF_EMPTY){
+ /* normally this should not happen since we checked for
+ * available elements in qeth_check_elements_for_context
+ */
+ if (element == 0)
+ return -EBUSY;
+ else {
+ PRINT_WARN("could only partially fill eddp "
+ "buffer!\n");
+ goto out;
+ }
+ }
+ /* check if the whole next skb fits into current buffer */
+ if ((QETH_MAX_BUFFER_ELEMENTS(queue->card) -
+ buf->next_element_to_fill)
+ < ctx->elements_per_skb){
+ /* no -> go to next buffer */
+ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
+ index = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
+ flush_cnt++;
+ /* new buffer, so we have to add ctx to buffer'ctx_list
+ * and increment ctx's refcnt */
+ must_refcnt = 1;
+ continue;
+ }
+ if (must_refcnt){
+ must_refcnt = 0;
+ if (qeth_eddp_buf_ref_context(buf, ctx)){
+ PRINT_WARN("no memory to create eddp context "
+ "reference\n");
+ goto out_check;
+ }
+ }
+ buffer = buf->buffer;
+ /* fill one skb into buffer */
+ for (i = 0; i < ctx->elements_per_skb; ++i){
+ buffer->element[buf->next_element_to_fill].addr =
+ ctx->elements[element].addr;
+ buffer->element[buf->next_element_to_fill].length =
+ ctx->elements[element].length;
+ buffer->element[buf->next_element_to_fill].flags =
+ ctx->elements[element].flags;
+ buf->next_element_to_fill++;
+ element++;
+ elements--;
+ }
+ }
+out_check:
+ if (!queue->do_pack) {
+ QETH_DBF_TEXT(trace, 6, "fillbfnp");
+ /* set state to PRIMED -> will be flushed */
+ if (buf->next_element_to_fill > 0){
+ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
+ flush_cnt++;
+ }
+ } else {
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.skbs_sent_pack++;
+#endif
+ QETH_DBF_TEXT(trace, 6, "fillbfpa");
+ if (buf->next_element_to_fill >=
+ QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
+ /*
+ * packed buffer if full -> set state PRIMED
+ * -> will be flushed
+ */
+ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
+ flush_cnt++;
+ }
+ }
+out:
+ return flush_cnt;
+}
+
+static inline int
+qeth_get_skb_data_len(struct sk_buff *skb)
+{
+ int len = skb->len;
+ int i;
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i)
+ len -= skb_shinfo(skb)->frags[i].size;
+ return len;
+}
+
+static inline void
+qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
+ struct qeth_eddp_data *eddp)
+{
+ u8 *page;
+ int page_remainder;
+ int page_offset;
+ int hdr_len;
+ struct qeth_eddp_element *element;
+
+ QETH_DBF_TEXT(trace, 5, "eddpcrsh");
+ page = ctx->pages[ctx->offset >> PAGE_SHIFT];
+ page_offset = ctx->offset % PAGE_SIZE;
+ element = &ctx->elements[ctx->num_elements];
+ hdr_len = eddp->nhl + eddp->thl;
+ /* FIXME: layer2 and VLAN !!! */
+ if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
+ hdr_len += ETH_HLEN;
+ if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
+ hdr_len += VLAN_HLEN;
+ /* does complete header fit in current page ? */
+ page_remainder = PAGE_SIZE - page_offset;
+ if (page_remainder < (sizeof(struct qeth_hdr) + hdr_len)){
+ /* no -> go to start of next page */
+ ctx->offset += page_remainder;
+ page = ctx->pages[ctx->offset >> PAGE_SHIFT];
+ page_offset = 0;
+ }
+ memcpy(page + page_offset, &eddp->qh, sizeof(struct qeth_hdr));
+ element->addr = page + page_offset;
+ element->length = sizeof(struct qeth_hdr);
+ ctx->offset += sizeof(struct qeth_hdr);
+ page_offset += sizeof(struct qeth_hdr);
+ /* add mac header (?) */
+ if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2){
+ memcpy(page + page_offset, &eddp->mac, ETH_HLEN);
+ element->length += ETH_HLEN;
+ ctx->offset += ETH_HLEN;
+ page_offset += ETH_HLEN;
+ }
+ /* add VLAN tag */
+ if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)){
+ memcpy(page + page_offset, &eddp->vlan, VLAN_HLEN);
+ element->length += VLAN_HLEN;
+ ctx->offset += VLAN_HLEN;
+ page_offset += VLAN_HLEN;
+ }
+ /* add network header */
+ memcpy(page + page_offset, (u8 *)&eddp->nh, eddp->nhl);
+ element->length += eddp->nhl;
+ eddp->nh_in_ctx = page + page_offset;
+ ctx->offset += eddp->nhl;
+ page_offset += eddp->nhl;
+ /* add transport header */
+ memcpy(page + page_offset, (u8 *)&eddp->th, eddp->thl);
+ element->length += eddp->thl;
+ eddp->th_in_ctx = page + page_offset;
+ ctx->offset += eddp->thl;
+}
+
+static inline void
+qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
+ u32 *hcsum)
+{
+ struct skb_frag_struct *frag;
+ int left_in_frag;
+ int copy_len;
+ u8 *src;
+
+ QETH_DBF_TEXT(trace, 5, "eddpcdtc");
+ if (skb_shinfo(eddp->skb)->nr_frags == 0) {
+ memcpy(dst, eddp->skb->data + eddp->skb_offset, len);
+ *hcsum = csum_partial(eddp->skb->data + eddp->skb_offset, len,
+ *hcsum);
+ eddp->skb_offset += len;
+ } else {
+ while (len > 0) {
+ if (eddp->frag < 0) {
+ /* we're in skb->data */
+ left_in_frag = qeth_get_skb_data_len(eddp->skb)
+ - eddp->skb_offset;
+ src = eddp->skb->data + eddp->skb_offset;
+ } else {
+ frag = &skb_shinfo(eddp->skb)->
+ frags[eddp->frag];
+ left_in_frag = frag->size - eddp->frag_offset;
+ src = (u8 *)(
+ (page_to_pfn(frag->page) << PAGE_SHIFT)+
+ frag->page_offset + eddp->frag_offset);
+ }
+ if (left_in_frag <= 0) {
+ eddp->frag++;
+ eddp->frag_offset = 0;
+ continue;
+ }
+ copy_len = min(left_in_frag, len);
+ memcpy(dst, src, copy_len);
+ *hcsum = csum_partial(src, copy_len, *hcsum);
+ dst += copy_len;
+ eddp->frag_offset += copy_len;
+ eddp->skb_offset += copy_len;
+ len -= copy_len;
+ }
+ }
+}
+
+static inline void
+qeth_eddp_create_segment_data_tcp(struct qeth_eddp_context *ctx,
+ struct qeth_eddp_data *eddp, int data_len,
+ u32 hcsum)
+{
+ u8 *page;
+ int page_remainder;
+ int page_offset;
+ struct qeth_eddp_element *element;
+ int first_lap = 1;
+
+ QETH_DBF_TEXT(trace, 5, "eddpcsdt");
+ page = ctx->pages[ctx->offset >> PAGE_SHIFT];
+ page_offset = ctx->offset % PAGE_SIZE;
+ element = &ctx->elements[ctx->num_elements];
+ while (data_len){
+ page_remainder = PAGE_SIZE - page_offset;
+ if (page_remainder < data_len){
+ qeth_eddp_copy_data_tcp(page + page_offset, eddp,
+ page_remainder, &hcsum);
+ element->length += page_remainder;
+ if (first_lap)
+ element->flags = SBAL_FLAGS_FIRST_FRAG;
+ else
+ element->flags = SBAL_FLAGS_MIDDLE_FRAG;
+ ctx->num_elements++;
+ element++;
+ data_len -= page_remainder;
+ ctx->offset += page_remainder;
+ page = ctx->pages[ctx->offset >> PAGE_SHIFT];
+ page_offset = 0;
+ element->addr = page + page_offset;
+ } else {
+ qeth_eddp_copy_data_tcp(page + page_offset, eddp,
+ data_len, &hcsum);
+ element->length += data_len;
+ if (!first_lap)
+ element->flags = SBAL_FLAGS_LAST_FRAG;
+ ctx->num_elements++;
+ ctx->offset += data_len;
+ data_len = 0;
+ }
+ first_lap = 0;
+ }
+ ((struct tcphdr *)eddp->th_in_ctx)->check = csum_fold(hcsum);
+}
+
+static inline u32
+qeth_eddp_check_tcp4_hdr(struct qeth_eddp_data *eddp, int data_len)
+{
+ u32 phcsum; /* pseudo header checksum */
+
+ QETH_DBF_TEXT(trace, 5, "eddpckt4");
+ eddp->th.tcp.h.check = 0;
+ /* compute pseudo header checksum */
+ phcsum = csum_tcpudp_nofold(eddp->nh.ip4.h.saddr, eddp->nh.ip4.h.daddr,
+ eddp->thl + data_len, IPPROTO_TCP, 0);
+ /* compute checksum of tcp header */
+ return csum_partial((u8 *)&eddp->th, eddp->thl, phcsum);
+}
+
+static inline u32
+qeth_eddp_check_tcp6_hdr(struct qeth_eddp_data *eddp, int data_len)
+{
+ u32 proto;
+ u32 phcsum; /* pseudo header checksum */
+
+ QETH_DBF_TEXT(trace, 5, "eddpckt6");
+ eddp->th.tcp.h.check = 0;
+ /* compute pseudo header checksum */
+ phcsum = csum_partial((u8 *)&eddp->nh.ip6.h.saddr,
+ sizeof(struct in6_addr), 0);
+ phcsum = csum_partial((u8 *)&eddp->nh.ip6.h.daddr,
+ sizeof(struct in6_addr), phcsum);
+ proto = htonl(IPPROTO_TCP);
+ phcsum = csum_partial((u8 *)&proto, sizeof(u32), phcsum);
+ return phcsum;
+}
+
+static inline struct qeth_eddp_data *
+qeth_eddp_create_eddp_data(struct qeth_hdr *qh, u8 *nh, u8 nhl, u8 *th, u8 thl)
+{
+ struct qeth_eddp_data *eddp;
+
+ QETH_DBF_TEXT(trace, 5, "eddpcrda");
+ eddp = kmalloc(sizeof(struct qeth_eddp_data), GFP_ATOMIC);
+ if (eddp){
+ memset(eddp, 0, sizeof(struct qeth_eddp_data));
+ eddp->nhl = nhl;
+ eddp->thl = thl;
+ memcpy(&eddp->qh, qh, sizeof(struct qeth_hdr));
+ memcpy(&eddp->nh, nh, nhl);
+ memcpy(&eddp->th, th, thl);
+ eddp->frag = -1; /* initially we're in skb->data */
+ }
+ return eddp;
+}
+
+static inline void
+__qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
+ struct qeth_eddp_data *eddp)
+{
+ struct tcphdr *tcph;
+ int data_len;
+ u32 hcsum;
+
+ QETH_DBF_TEXT(trace, 5, "eddpftcp");
+ eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl;
+ tcph = eddp->skb->h.th;
+ while (eddp->skb_offset < eddp->skb->len) {
+ data_len = min((int)skb_shinfo(eddp->skb)->tso_size,
+ (int)(eddp->skb->len - eddp->skb_offset));
+ /* prepare qdio hdr */
+ if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2){
+ eddp->qh.hdr.l2.pkt_length = data_len + ETH_HLEN +
+ eddp->nhl + eddp->thl -
+ sizeof(struct qeth_hdr);
+#ifdef CONFIG_QETH_VLAN
+ if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
+ eddp->qh.hdr.l2.pkt_length += VLAN_HLEN;
+#endif /* CONFIG_QETH_VLAN */
+ } else
+ eddp->qh.hdr.l3.length = data_len + eddp->nhl +
+ eddp->thl;
+ /* prepare ip hdr */
+ if (eddp->skb->protocol == ETH_P_IP){
+ eddp->nh.ip4.h.tot_len = data_len + eddp->nhl +
+ eddp->thl;
+ eddp->nh.ip4.h.check = 0;
+ eddp->nh.ip4.h.check =
+ ip_fast_csum((u8 *)&eddp->nh.ip4.h,
+ eddp->nh.ip4.h.ihl);
+ } else
+ eddp->nh.ip6.h.payload_len = data_len + eddp->thl;
+ /* prepare tcp hdr */
+ if (data_len == (eddp->skb->len - eddp->skb_offset)){
+ /* last segment -> set FIN and PSH flags */
+ eddp->th.tcp.h.fin = tcph->fin;
+ eddp->th.tcp.h.psh = tcph->psh;
+ }
+ if (eddp->skb->protocol == ETH_P_IP)
+ hcsum = qeth_eddp_check_tcp4_hdr(eddp, data_len);
+ else
+ hcsum = qeth_eddp_check_tcp6_hdr(eddp, data_len);
+ /* fill the next segment into the context */
+ qeth_eddp_create_segment_hdrs(ctx, eddp);
+ qeth_eddp_create_segment_data_tcp(ctx, eddp, data_len, hcsum);
+ if (eddp->skb_offset >= eddp->skb->len)
+ break;
+ /* prepare headers for next round */
+ if (eddp->skb->protocol == ETH_P_IP)
+ eddp->nh.ip4.h.id++;
+ eddp->th.tcp.h.seq += data_len;
+ }
+}
+
+static inline int
+qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
+ struct sk_buff *skb, struct qeth_hdr *qhdr)
+{
+ struct qeth_eddp_data *eddp = NULL;
+
+ QETH_DBF_TEXT(trace, 5, "eddpficx");
+ /* create our segmentation headers and copy original headers */
+ if (skb->protocol == ETH_P_IP)
+ eddp = qeth_eddp_create_eddp_data(qhdr, (u8 *)skb->nh.iph,
+ skb->nh.iph->ihl*4,
+ (u8 *)skb->h.th, skb->h.th->doff*4);
+ else
+ eddp = qeth_eddp_create_eddp_data(qhdr, (u8 *)skb->nh.ipv6h,
+ sizeof(struct ipv6hdr),
+ (u8 *)skb->h.th, skb->h.th->doff*4);
+
+ if (eddp == NULL) {
+ QETH_DBF_TEXT(trace, 2, "eddpfcnm");
+ return -ENOMEM;
+ }
+ if (qhdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
+ memcpy(&eddp->mac, eth_hdr(skb), ETH_HLEN);
+#ifdef CONFIG_QETH_VLAN
+ if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)) {
+ eddp->vlan[0] = __constant_htons(skb->protocol);
+ eddp->vlan[1] = htons(vlan_tx_tag_get(skb));
+ }
+#endif /* CONFIG_QETH_VLAN */
+ }
+ /* the next flags will only be set on the last segment */
+ eddp->th.tcp.h.fin = 0;
+ eddp->th.tcp.h.psh = 0;
+ eddp->skb = skb;
+ /* begin segmentation and fill context */
+ __qeth_eddp_fill_context_tcp(ctx, eddp);
+ kfree(eddp);
+ return 0;
+}
+
+static inline void
+qeth_eddp_calc_num_pages(struct qeth_eddp_context *ctx, struct sk_buff *skb,
+ int hdr_len)
+{
+ int skbs_per_page;
+
+ QETH_DBF_TEXT(trace, 5, "eddpcanp");
+ /* can we put multiple skbs in one page? */
+ skbs_per_page = PAGE_SIZE / (skb_shinfo(skb)->tso_size + hdr_len);
+ if (skbs_per_page > 1){
+ ctx->num_pages = (skb_shinfo(skb)->tso_segs + 1) /
+ skbs_per_page + 1;
+ ctx->elements_per_skb = 1;
+ } else {
+ /* no -> how many elements per skb? */
+ ctx->elements_per_skb = (skb_shinfo(skb)->tso_size + hdr_len +
+ PAGE_SIZE) >> PAGE_SHIFT;
+ ctx->num_pages = ctx->elements_per_skb *
+ (skb_shinfo(skb)->tso_segs + 1);
+ }
+ ctx->num_elements = ctx->elements_per_skb *
+ (skb_shinfo(skb)->tso_segs + 1);
+}
+
+static inline struct qeth_eddp_context *
+qeth_eddp_create_context_generic(struct qeth_card *card, struct sk_buff *skb,
+ int hdr_len)
+{
+ struct qeth_eddp_context *ctx = NULL;
+ u8 *addr;
+ int i;
+
+ QETH_DBF_TEXT(trace, 5, "creddpcg");
+ /* create the context and allocate pages */
+ ctx = kmalloc(sizeof(struct qeth_eddp_context), GFP_ATOMIC);
+ if (ctx == NULL){
+ QETH_DBF_TEXT(trace, 2, "ceddpcn1");
+ return NULL;
+ }
+ memset(ctx, 0, sizeof(struct qeth_eddp_context));
+ ctx->type = QETH_LARGE_SEND_EDDP;
+ qeth_eddp_calc_num_pages(ctx, skb, hdr_len);
+ if (ctx->elements_per_skb > QETH_MAX_BUFFER_ELEMENTS(card)){
+ QETH_DBF_TEXT(trace, 2, "ceddpcis");
+ kfree(ctx);
+ return NULL;
+ }
+ ctx->pages = kmalloc(ctx->num_pages * sizeof(u8 *), GFP_ATOMIC);
+ if (ctx->pages == NULL){
+ QETH_DBF_TEXT(trace, 2, "ceddpcn2");
+ kfree(ctx);
+ return NULL;
+ }
+ memset(ctx->pages, 0, ctx->num_pages * sizeof(u8 *));
+ for (i = 0; i < ctx->num_pages; ++i){
+ addr = (u8 *)__get_free_page(GFP_ATOMIC);
+ if (addr == NULL){
+ QETH_DBF_TEXT(trace, 2, "ceddpcn3");
+ ctx->num_pages = i;
+ qeth_eddp_free_context(ctx);
+ return NULL;
+ }
+ memset(addr, 0, PAGE_SIZE);
+ ctx->pages[i] = addr;
+ }
+ ctx->elements = kmalloc(ctx->num_elements *
+ sizeof(struct qeth_eddp_element), GFP_ATOMIC);
+ if (ctx->elements == NULL){
+ QETH_DBF_TEXT(trace, 2, "ceddpcn4");
+ qeth_eddp_free_context(ctx);
+ return NULL;
+ }
+ memset(ctx->elements, 0,
+ ctx->num_elements * sizeof(struct qeth_eddp_element));
+ /* reset num_elements; will be incremented again in fill_buffer to
+ * reflect number of actually used elements */
+ ctx->num_elements = 0;
+ return ctx;
+}
+
+static inline struct qeth_eddp_context *
+qeth_eddp_create_context_tcp(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *qhdr)
+{
+ struct qeth_eddp_context *ctx = NULL;
+
+ QETH_DBF_TEXT(trace, 5, "creddpct");
+ if (skb->protocol == ETH_P_IP)
+ ctx = qeth_eddp_create_context_generic(card, skb,
+ sizeof(struct qeth_hdr) + skb->nh.iph->ihl*4 +
+ skb->h.th->doff*4);
+ else if (skb->protocol == ETH_P_IPV6)
+ ctx = qeth_eddp_create_context_generic(card, skb,
+ sizeof(struct qeth_hdr) + sizeof(struct ipv6hdr) +
+ skb->h.th->doff*4);
+ else
+ QETH_DBF_TEXT(trace, 2, "cetcpinv");
+
+ if (ctx == NULL) {
+ QETH_DBF_TEXT(trace, 2, "creddpnl");
+ return NULL;
+ }
+ if (qeth_eddp_fill_context_tcp(ctx, skb, qhdr)){
+ QETH_DBF_TEXT(trace, 2, "ceddptfe");
+ qeth_eddp_free_context(ctx);
+ return NULL;
+ }
+ atomic_set(&ctx->refcnt, 1);
+ return ctx;
+}
+
+struct qeth_eddp_context *
+qeth_eddp_create_context(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *qhdr)
+{
+ QETH_DBF_TEXT(trace, 5, "creddpc");
+ switch (skb->sk->sk_protocol){
+ case IPPROTO_TCP:
+ return qeth_eddp_create_context_tcp(card, skb, qhdr);
+ default:
+ QETH_DBF_TEXT(trace, 2, "eddpinvp");
+ }
+ return NULL;
+}
+
+
diff --git a/drivers/s390/net/qeth_eddp.h b/drivers/s390/net/qeth_eddp.h
new file mode 100644
index 0000000..e1b5186
--- /dev/null
+++ b/drivers/s390/net/qeth_eddp.h
@@ -0,0 +1,85 @@
+/*
+ * linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.5 $)
+ *
+ * Header file for qeth enhanced device driver pakcing.
+ *
+ * Copyright 2004 IBM Corporation
+ *
+ * Author(s): Thomas Spatzier <tspat@de.ibm.com>
+ *
+ * $Revision: 1.5 $ $Date: 2005/03/24 09:04:18 $
+ *
+ */
+#ifndef __QETH_EDDP_H__
+#define __QETH_EDDP_H__
+
+struct qeth_eddp_element {
+ u32 flags;
+ u32 length;
+ void *addr;
+};
+
+struct qeth_eddp_context {
+ atomic_t refcnt;
+ enum qeth_large_send_types type;
+ int num_pages; /* # of allocated pages */
+ u8 **pages; /* pointers to pages */
+ int offset; /* offset in ctx during creation */
+ int num_elements; /* # of required 'SBALEs' */
+ struct qeth_eddp_element *elements; /* array of 'SBALEs' */
+ int elements_per_skb; /* # of 'SBALEs' per skb **/
+};
+
+struct qeth_eddp_context_reference {
+ struct list_head list;
+ struct qeth_eddp_context *ctx;
+};
+
+extern struct qeth_eddp_context *
+qeth_eddp_create_context(struct qeth_card *,struct sk_buff *,struct qeth_hdr *);
+
+extern void
+qeth_eddp_put_context(struct qeth_eddp_context *);
+
+extern int
+qeth_eddp_fill_buffer(struct qeth_qdio_out_q *,struct qeth_eddp_context *,int);
+
+extern void
+qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *);
+
+extern int
+qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *,
+ struct qeth_eddp_context *);
+/*
+ * Data used for fragmenting a IP packet.
+ */
+struct qeth_eddp_data {
+ struct qeth_hdr qh;
+ struct ethhdr mac;
+ u16 vlan[2];
+ union {
+ struct {
+ struct iphdr h;
+ u8 options[40];
+ } ip4;
+ struct {
+ struct ipv6hdr h;
+ } ip6;
+ } nh;
+ u8 nhl;
+ void *nh_in_ctx; /* address of nh within the ctx */
+ union {
+ struct {
+ struct tcphdr h;
+ u8 options[40];
+ } tcp;
+ } th;
+ u8 thl;
+ void *th_in_ctx; /* address of th within the ctx */
+ struct sk_buff *skb;
+ int skb_offset;
+ int frag;
+ int frag_offset;
+} __attribute__ ((packed));
+
+#endif /* __QETH_EDDP_H__ */
diff --git a/drivers/s390/net/qeth_fs.h b/drivers/s390/net/qeth_fs.h
new file mode 100644
index 0000000..5c9a51ce
--- /dev/null
+++ b/drivers/s390/net/qeth_fs.h
@@ -0,0 +1,163 @@
+/*
+ * linux/drivers/s390/net/qeth_fs.h
+ *
+ * Linux on zSeries OSA Express and HiperSockets support.
+ *
+ * This header file contains definitions related to sysfs and procfs.
+ *
+ * Copyright 2000,2003 IBM Corporation
+ * Author(s): Thomas Spatzier <tspat@de.ibm.com>
+ *
+ */
+#ifndef __QETH_FS_H__
+#define __QETH_FS_H__
+
+#define VERSION_QETH_FS_H "$Revision: 1.9 $"
+
+extern const char *VERSION_QETH_PROC_C;
+extern const char *VERSION_QETH_SYS_C;
+
+#ifdef CONFIG_PROC_FS
+extern int
+qeth_create_procfs_entries(void);
+
+extern void
+qeth_remove_procfs_entries(void);
+#else
+static inline int
+qeth_create_procfs_entries(void)
+{
+ return 0;
+}
+
+static inline void
+qeth_remove_procfs_entries(void)
+{
+}
+#endif /* CONFIG_PROC_FS */
+
+extern int
+qeth_create_device_attributes(struct device *dev);
+
+extern void
+qeth_remove_device_attributes(struct device *dev);
+
+extern int
+qeth_create_driver_attributes(void);
+
+extern void
+qeth_remove_driver_attributes(void);
+
+/*
+ * utility functions used in qeth_proc.c and qeth_sys.c
+ */
+
+static inline const char *
+qeth_get_checksum_str(struct qeth_card *card)
+{
+ if (card->options.checksum_type == SW_CHECKSUMMING)
+ return "sw";
+ else if (card->options.checksum_type == HW_CHECKSUMMING)
+ return "hw";
+ else
+ return "no";
+}
+
+static inline const char *
+qeth_get_prioq_str(struct qeth_card *card, char *buf)
+{
+ if (card->qdio.do_prio_queueing == QETH_NO_PRIO_QUEUEING)
+ sprintf(buf, "always_q_%i", card->qdio.default_out_queue);
+ else
+ strcpy(buf, (card->qdio.do_prio_queueing ==
+ QETH_PRIO_Q_ING_PREC)?
+ "by_prec." : "by_ToS");
+ return buf;
+}
+
+static inline const char *
+qeth_get_bufsize_str(struct qeth_card *card)
+{
+ if (card->qdio.in_buf_size == 16384)
+ return "16k";
+ else if (card->qdio.in_buf_size == 24576)
+ return "24k";
+ else if (card->qdio.in_buf_size == 32768)
+ return "32k";
+ else if (card->qdio.in_buf_size == 40960)
+ return "40k";
+ else
+ return "64k";
+}
+
+static inline const char *
+qeth_get_cardname(struct qeth_card *card)
+{
+ if (card->info.guestlan) {
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_OSAE:
+ return " Guest LAN QDIO";
+ case QETH_CARD_TYPE_IQD:
+ return " Guest LAN Hiper";
+ default:
+ return " unknown";
+ }
+ } else {
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_OSAE:
+ return " OSD Express";
+ case QETH_CARD_TYPE_IQD:
+ return " HiperSockets";
+ default:
+ return " unknown";
+ }
+ }
+ return " n/a";
+}
+
+/* max length to be returned: 14 */
+static inline const char *
+qeth_get_cardname_short(struct qeth_card *card)
+{
+ if (card->info.guestlan){
+ switch (card->info.type){
+ case QETH_CARD_TYPE_OSAE:
+ return "GuestLAN QDIO";
+ case QETH_CARD_TYPE_IQD:
+ return "GuestLAN Hiper";
+ default:
+ return "unknown";
+ }
+ } else {
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_OSAE:
+ switch (card->info.link_type) {
+ case QETH_LINK_TYPE_FAST_ETH:
+ return "OSD_100";
+ case QETH_LINK_TYPE_HSTR:
+ return "HSTR";
+ case QETH_LINK_TYPE_GBIT_ETH:
+ return "OSD_1000";
+ case QETH_LINK_TYPE_10GBIT_ETH:
+ return "OSD_10GIG";
+ case QETH_LINK_TYPE_LANE_ETH100:
+ return "OSD_FE_LANE";
+ case QETH_LINK_TYPE_LANE_TR:
+ return "OSD_TR_LANE";
+ case QETH_LINK_TYPE_LANE_ETH1000:
+ return "OSD_GbE_LANE";
+ case QETH_LINK_TYPE_LANE:
+ return "OSD_ATM_LANE";
+ default:
+ return "OSD_Express";
+ }
+ case QETH_CARD_TYPE_IQD:
+ return "HiperSockets";
+ default:
+ return "unknown";
+ }
+ }
+ return "n/a";
+}
+
+#endif /* __QETH_FS_H__ */
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
new file mode 100644
index 0000000..607b925
--- /dev/null
+++ b/drivers/s390/net/qeth_main.c
@@ -0,0 +1,8236 @@
+/*
+ *
+ * linux/drivers/s390/net/qeth_main.c ($Revision: 1.206 $)
+ *
+ * Linux on zSeries OSA Express and HiperSockets support
+ *
+ * Copyright 2000,2003 IBM Corporation
+ *
+ * Author(s): Original Code written by
+ * Utz Bacher (utz.bacher@de.ibm.com)
+ * Rewritten by
+ * Frank Pavlic (pavlic@de.ibm.com) and
+ * Thomas Spatzier <tspat@de.ibm.com>
+ *
+ * $Revision: 1.206 $ $Date: 2005/03/24 09:04:18 $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/***
+ * eye catcher; just for debugging purposes
+ */
+void volatile
+qeth_eyecatcher(void)
+{
+ return;
+}
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/ip.h>
+#include <linux/inetdevice.h>
+#include <linux/netdevice.h>
+#include <linux/sched.h>
+#include <linux/workqueue.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/tcp.h>
+#include <linux/icmp.h>
+#include <linux/skbuff.h>
+#include <linux/in.h>
+#include <linux/igmp.h>
+#include <linux/init.h>
+#include <linux/reboot.h>
+#include <linux/mii.h>
+#include <linux/rcupdate.h>
+#include <linux/ethtool.h>
+
+#include <net/arp.h>
+#include <net/ip.h>
+#include <net/route.h>
+
+#include <asm/ebcdic.h>
+#include <asm/io.h>
+#include <asm/qeth.h>
+#include <asm/timex.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+
+#include "qeth.h"
+#include "qeth_mpc.h"
+#include "qeth_fs.h"
+#include "qeth_eddp.h"
+#include "qeth_tso.h"
+
+#define VERSION_QETH_C "$Revision: 1.206 $"
+static const char *version = "qeth S/390 OSA-Express driver";
+
+/**
+ * Debug Facility Stuff
+ */
+static debug_info_t *qeth_dbf_setup = NULL;
+static debug_info_t *qeth_dbf_data = NULL;
+static debug_info_t *qeth_dbf_misc = NULL;
+static debug_info_t *qeth_dbf_control = NULL;
+debug_info_t *qeth_dbf_trace = NULL;
+static debug_info_t *qeth_dbf_sense = NULL;
+static debug_info_t *qeth_dbf_qerr = NULL;
+
+DEFINE_PER_CPU(char[256], qeth_dbf_txt_buf);
+
+/**
+ * some more definitions and declarations
+ */
+static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
+
+/* list of our cards */
+struct qeth_card_list_struct qeth_card_list;
+/*process list want to be notified*/
+spinlock_t qeth_notify_lock;
+struct list_head qeth_notify_list;
+
+static void qeth_send_control_data_cb(struct qeth_channel *,
+ struct qeth_cmd_buffer *);
+
+/**
+ * here we go with function implementation
+ */
+static void
+qeth_init_qdio_info(struct qeth_card *card);
+
+static int
+qeth_init_qdio_queues(struct qeth_card *card);
+
+static int
+qeth_alloc_qdio_buffers(struct qeth_card *card);
+
+static void
+qeth_free_qdio_buffers(struct qeth_card *);
+
+static void
+qeth_clear_qdio_buffers(struct qeth_card *);
+
+static void
+qeth_clear_ip_list(struct qeth_card *, int, int);
+
+static void
+qeth_clear_ipacmd_list(struct qeth_card *);
+
+static int
+qeth_qdio_clear_card(struct qeth_card *, int);
+
+static void
+qeth_clear_working_pool_list(struct qeth_card *);
+
+static void
+qeth_clear_cmd_buffers(struct qeth_channel *);
+
+static int
+qeth_stop(struct net_device *);
+
+static void
+qeth_clear_ipato_list(struct qeth_card *);
+
+static int
+qeth_is_addr_covered_by_ipato(struct qeth_card *, struct qeth_ipaddr *);
+
+static void
+qeth_irq_tasklet(unsigned long);
+
+static int
+qeth_set_online(struct ccwgroup_device *);
+
+static struct qeth_ipaddr *
+qeth_get_addr_buffer(enum qeth_prot_versions);
+
+static void
+qeth_set_multicast_list(struct net_device *);
+
+static void
+qeth_notify_processes(void)
+{
+ /*notify all registered processes */
+ struct qeth_notify_list_struct *n_entry;
+
+ QETH_DBF_TEXT(trace,3,"procnoti");
+ spin_lock(&qeth_notify_lock);
+ list_for_each_entry(n_entry, &qeth_notify_list, list) {
+ send_sig(n_entry->signum, n_entry->task, 1);
+ }
+ spin_unlock(&qeth_notify_lock);
+
+}
+int
+qeth_notifier_unregister(struct task_struct *p)
+{
+ struct qeth_notify_list_struct *n_entry, *tmp;
+
+ QETH_DBF_TEXT(trace, 2, "notunreg");
+ spin_lock(&qeth_notify_lock);
+ list_for_each_entry_safe(n_entry, tmp, &qeth_notify_list, list) {
+ if (n_entry->task == p) {
+ list_del(&n_entry->list);
+ kfree(n_entry);
+ goto out;
+ }
+ }
+out:
+ spin_unlock(&qeth_notify_lock);
+ return 0;
+}
+int
+qeth_notifier_register(struct task_struct *p, int signum)
+{
+ struct qeth_notify_list_struct *n_entry;
+
+
+ /*check first if entry already exists*/
+ spin_lock(&qeth_notify_lock);
+ list_for_each_entry(n_entry, &qeth_notify_list, list) {
+ if (n_entry->task == p) {
+ n_entry->signum = signum;
+ spin_unlock(&qeth_notify_lock);
+ return 0;
+ }
+ }
+ spin_unlock(&qeth_notify_lock);
+
+ n_entry = (struct qeth_notify_list_struct *)
+ kmalloc(sizeof(struct qeth_notify_list_struct),GFP_KERNEL);
+ if (!n_entry)
+ return -ENOMEM;
+ n_entry->task = p;
+ n_entry->signum = signum;
+ spin_lock(&qeth_notify_lock);
+ list_add(&n_entry->list,&qeth_notify_list);
+ spin_unlock(&qeth_notify_lock);
+ return 0;
+}
+
+
+/**
+ * free channel command buffers
+ */
+static void
+qeth_clean_channel(struct qeth_channel *channel)
+{
+ int cnt;
+
+ QETH_DBF_TEXT(setup, 2, "freech");
+ for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
+ kfree(channel->iob[cnt].data);
+}
+
+/**
+ * free card
+ */
+static void
+qeth_free_card(struct qeth_card *card)
+{
+
+ QETH_DBF_TEXT(setup, 2, "freecrd");
+ QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
+ qeth_clean_channel(&card->read);
+ qeth_clean_channel(&card->write);
+ if (card->dev)
+ free_netdev(card->dev);
+ qeth_clear_ip_list(card, 0, 0);
+ qeth_clear_ipato_list(card);
+ kfree(card->ip_tbd_list);
+ qeth_free_qdio_buffers(card);
+ kfree(card);
+}
+
+/**
+ * alloc memory for command buffer per channel
+ */
+static int
+qeth_setup_channel(struct qeth_channel *channel)
+{
+ int cnt;
+
+ QETH_DBF_TEXT(setup, 2, "setupch");
+ for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
+ channel->iob[cnt].data = (char *)
+ kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
+ if (channel->iob[cnt].data == NULL)
+ break;
+ channel->iob[cnt].state = BUF_STATE_FREE;
+ channel->iob[cnt].channel = channel;
+ channel->iob[cnt].callback = qeth_send_control_data_cb;
+ channel->iob[cnt].rc = 0;
+ }
+ if (cnt < QETH_CMD_BUFFER_NO) {
+ while (cnt-- > 0)
+ kfree(channel->iob[cnt].data);
+ return -ENOMEM;
+ }
+ channel->buf_no = 0;
+ channel->io_buf_no = 0;
+ atomic_set(&channel->irq_pending, 0);
+ spin_lock_init(&channel->iob_lock);
+
+ init_waitqueue_head(&channel->wait_q);
+ channel->irq_tasklet.data = (unsigned long) channel;
+ channel->irq_tasklet.func = qeth_irq_tasklet;
+ return 0;
+}
+
+/**
+ * alloc memory for card structure
+ */
+static struct qeth_card *
+qeth_alloc_card(void)
+{
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(setup, 2, "alloccrd");
+ card = (struct qeth_card *) kmalloc(sizeof(struct qeth_card),
+ GFP_DMA|GFP_KERNEL);
+ if (!card)
+ return NULL;
+ QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
+ memset(card, 0, sizeof(struct qeth_card));
+ if (qeth_setup_channel(&card->read)) {
+ kfree(card);
+ return NULL;
+ }
+ if (qeth_setup_channel(&card->write)) {
+ qeth_clean_channel(&card->read);
+ kfree(card);
+ return NULL;
+ }
+ return card;
+}
+
+static long
+__qeth_check_irb_error(struct ccw_device *cdev, struct irb *irb)
+{
+ if (!IS_ERR(irb))
+ return 0;
+
+ switch (PTR_ERR(irb)) {
+ case -EIO:
+ PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
+ QETH_DBF_TEXT(trace, 2, "ckirberr");
+ QETH_DBF_TEXT_(trace, 2, " rc%d", -EIO);
+ break;
+ case -ETIMEDOUT:
+ PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
+ QETH_DBF_TEXT(trace, 2, "ckirberr");
+ QETH_DBF_TEXT_(trace, 2, " rc%d", -ETIMEDOUT);
+ break;
+ default:
+ PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
+ cdev->dev.bus_id);
+ QETH_DBF_TEXT(trace, 2, "ckirberr");
+ QETH_DBF_TEXT(trace, 2, " rc???");
+ }
+ return PTR_ERR(irb);
+}
+
+static int
+qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
+{
+ int dstat,cstat;
+ char *sense;
+
+ sense = (char *) irb->ecw;
+ cstat = irb->scsw.cstat;
+ dstat = irb->scsw.dstat;
+
+ if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
+ SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
+ SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
+ QETH_DBF_TEXT(trace,2, "CGENCHK");
+ PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
+ cdev->dev.bus_id, dstat, cstat);
+ HEXDUMP16(WARN, "irb: ", irb);
+ HEXDUMP16(WARN, "irb: ", ((char *) irb) + 32);
+ return 1;
+ }
+
+ if (dstat & DEV_STAT_UNIT_CHECK) {
+ if (sense[SENSE_RESETTING_EVENT_BYTE] &
+ SENSE_RESETTING_EVENT_FLAG) {
+ QETH_DBF_TEXT(trace,2,"REVIND");
+ return 1;
+ }
+ if (sense[SENSE_COMMAND_REJECT_BYTE] &
+ SENSE_COMMAND_REJECT_FLAG) {
+ QETH_DBF_TEXT(trace,2,"CMDREJi");
+ return 0;
+ }
+ if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
+ QETH_DBF_TEXT(trace,2,"AFFE");
+ return 1;
+ }
+ if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
+ QETH_DBF_TEXT(trace,2,"ZEROSEN");
+ return 0;
+ }
+ QETH_DBF_TEXT(trace,2,"DGENCHK");
+ return 1;
+ }
+ return 0;
+}
+static int qeth_issue_next_read(struct qeth_card *);
+
+/**
+ * interrupt handler
+ */
+static void
+qeth_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
+{
+ int rc;
+ int cstat,dstat;
+ struct qeth_cmd_buffer *buffer;
+ struct qeth_channel *channel;
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace,5,"irq");
+
+ if (__qeth_check_irb_error(cdev, irb))
+ return;
+ cstat = irb->scsw.cstat;
+ dstat = irb->scsw.dstat;
+
+ card = CARD_FROM_CDEV(cdev);
+ if (!card)
+ return;
+
+ if (card->read.ccwdev == cdev){
+ channel = &card->read;
+ QETH_DBF_TEXT(trace,5,"read");
+ } else if (card->write.ccwdev == cdev) {
+ channel = &card->write;
+ QETH_DBF_TEXT(trace,5,"write");
+ } else {
+ channel = &card->data;
+ QETH_DBF_TEXT(trace,5,"data");
+ }
+ atomic_set(&channel->irq_pending, 0);
+
+ if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
+ channel->state = CH_STATE_STOPPED;
+
+ if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
+ channel->state = CH_STATE_HALTED;
+
+ /*let's wake up immediately on data channel*/
+ if ((channel == &card->data) && (intparm != 0))
+ goto out;
+
+ if (intparm == QETH_CLEAR_CHANNEL_PARM) {
+ QETH_DBF_TEXT(trace, 6, "clrchpar");
+ /* we don't have to handle this further */
+ intparm = 0;
+ }
+ if (intparm == QETH_HALT_CHANNEL_PARM) {
+ QETH_DBF_TEXT(trace, 6, "hltchpar");
+ /* we don't have to handle this further */
+ intparm = 0;
+ }
+ if ((dstat & DEV_STAT_UNIT_EXCEP) ||
+ (dstat & DEV_STAT_UNIT_CHECK) ||
+ (cstat)) {
+ if (irb->esw.esw0.erw.cons) {
+ /* TODO: we should make this s390dbf */
+ PRINT_WARN("sense data available on channel %s.\n",
+ CHANNEL_ID(channel));
+ PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
+ HEXDUMP16(WARN,"irb: ",irb);
+ HEXDUMP16(WARN,"sense data: ",irb->ecw);
+ }
+ rc = qeth_get_problem(cdev,irb);
+ if (rc) {
+ qeth_schedule_recovery(card);
+ goto out;
+ }
+ }
+
+ if (intparm) {
+ buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
+ buffer->state = BUF_STATE_PROCESSED;
+ }
+ if (channel == &card->data)
+ return;
+
+ if (channel == &card->read &&
+ channel->state == CH_STATE_UP)
+ qeth_issue_next_read(card);
+
+ tasklet_schedule(&channel->irq_tasklet);
+ return;
+out:
+ wake_up(&card->wait_q);
+}
+
+/**
+ * tasklet function scheduled from irq handler
+ */
+static void
+qeth_irq_tasklet(unsigned long data)
+{
+ struct qeth_card *card;
+ struct qeth_channel *channel;
+ struct qeth_cmd_buffer *iob;
+ __u8 index;
+
+ QETH_DBF_TEXT(trace,5,"irqtlet");
+ channel = (struct qeth_channel *) data;
+ iob = channel->iob;
+ index = channel->buf_no;
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ while (iob[index].state == BUF_STATE_PROCESSED) {
+ if (iob[index].callback !=NULL) {
+ iob[index].callback(channel,iob + index);
+ }
+ index = (index + 1) % QETH_CMD_BUFFER_NO;
+ }
+ channel->buf_no = index;
+ wake_up(&card->wait_q);
+}
+
+static int qeth_stop_card(struct qeth_card *);
+
+static int
+qeth_set_offline(struct ccwgroup_device *cgdev)
+{
+ struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
+ int rc = 0;
+ enum qeth_card_states recover_flag;
+
+ QETH_DBF_TEXT(setup, 3, "setoffl");
+ QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
+
+ recover_flag = card->state;
+ if (qeth_stop_card(card) == -ERESTARTSYS){
+ PRINT_WARN("Stopping card %s interrupted by user!\n",
+ CARD_BUS_ID(card));
+ return -ERESTARTSYS;
+ }
+ if ((rc = ccw_device_set_offline(CARD_DDEV(card))) ||
+ (rc = ccw_device_set_offline(CARD_WDEV(card))) ||
+ (rc = ccw_device_set_offline(CARD_RDEV(card)))) {
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ }
+ if (recover_flag == CARD_STATE_UP)
+ card->state = CARD_STATE_RECOVER;
+ qeth_notify_processes();
+ return 0;
+}
+
+static int
+qeth_wait_for_threads(struct qeth_card *card, unsigned long threads);
+
+
+static void
+qeth_remove_device(struct ccwgroup_device *cgdev)
+{
+ struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(setup, 3, "rmdev");
+ QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
+
+ if (!card)
+ return;
+
+ if (qeth_wait_for_threads(card, 0xffffffff))
+ return;
+
+ if (cgdev->state == CCWGROUP_ONLINE){
+ card->use_hard_stop = 1;
+ qeth_set_offline(cgdev);
+ }
+ /* remove form our internal list */
+ write_lock_irqsave(&qeth_card_list.rwlock, flags);
+ list_del(&card->list);
+ write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
+ if (card->dev)
+ unregister_netdev(card->dev);
+ qeth_remove_device_attributes(&cgdev->dev);
+ qeth_free_card(card);
+ cgdev->dev.driver_data = NULL;
+ put_device(&cgdev->dev);
+}
+
+static int
+qeth_register_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
+static int
+qeth_deregister_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
+
+/**
+ * Add/remove address to/from card's ip list, i.e. try to add or remove
+ * reference to/from an IP address that is already registered on the card.
+ * Returns:
+ * 0 address was on card and its reference count has been adjusted,
+ * but is still > 0, so nothing has to be done
+ * also returns 0 if card was not on card and the todo was to delete
+ * the address -> there is also nothing to be done
+ * 1 address was not on card and the todo is to add it to the card's ip
+ * list
+ * -1 address was on card and its reference count has been decremented
+ * to <= 0 by the todo -> address must be removed from card
+ */
+static int
+__qeth_ref_ip_on_card(struct qeth_card *card, struct qeth_ipaddr *todo,
+ struct qeth_ipaddr **__addr)
+{
+ struct qeth_ipaddr *addr;
+ int found = 0;
+
+ list_for_each_entry(addr, &card->ip_list, entry) {
+ if ((addr->proto == QETH_PROT_IPV4) &&
+ (todo->proto == QETH_PROT_IPV4) &&
+ (addr->type == todo->type) &&
+ (addr->u.a4.addr == todo->u.a4.addr) &&
+ (addr->u.a4.mask == todo->u.a4.mask) ){
+ found = 1;
+ break;
+ }
+ if ((addr->proto == QETH_PROT_IPV6) &&
+ (todo->proto == QETH_PROT_IPV6) &&
+ (addr->type == todo->type) &&
+ (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
+ (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
+ sizeof(struct in6_addr)) == 0)) {
+ found = 1;
+ break;
+ }
+ }
+ if (found){
+ addr->users += todo->users;
+ if (addr->users <= 0){
+ *__addr = addr;
+ return -1;
+ } else {
+ /* for VIPA and RXIP limit refcount to 1 */
+ if (addr->type != QETH_IP_TYPE_NORMAL)
+ addr->users = 1;
+ return 0;
+ }
+ }
+ if (todo->users > 0){
+ /* for VIPA and RXIP limit refcount to 1 */
+ if (todo->type != QETH_IP_TYPE_NORMAL)
+ todo->users = 1;
+ return 1;
+ } else
+ return 0;
+}
+
+static inline int
+__qeth_address_exists_in_list(struct list_head *list, struct qeth_ipaddr *addr,
+ int same_type)
+{
+ struct qeth_ipaddr *tmp;
+
+ list_for_each_entry(tmp, list, entry) {
+ if ((tmp->proto == QETH_PROT_IPV4) &&
+ (addr->proto == QETH_PROT_IPV4) &&
+ ((same_type && (tmp->type == addr->type)) ||
+ (!same_type && (tmp->type != addr->type)) ) &&
+ (tmp->u.a4.addr == addr->u.a4.addr) ){
+ return 1;
+ }
+ if ((tmp->proto == QETH_PROT_IPV6) &&
+ (addr->proto == QETH_PROT_IPV6) &&
+ ((same_type && (tmp->type == addr->type)) ||
+ (!same_type && (tmp->type != addr->type)) ) &&
+ (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
+ sizeof(struct in6_addr)) == 0) ) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Add IP to be added to todo list. If there is already an "add todo"
+ * in this list we just incremenent the reference count.
+ * Returns 0 if we just incremented reference count.
+ */
+static int
+__qeth_insert_ip_todo(struct qeth_card *card, struct qeth_ipaddr *addr, int add)
+{
+ struct qeth_ipaddr *tmp, *t;
+ int found = 0;
+
+ list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
+ if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
+ (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
+ return 0;
+ if ((tmp->proto == QETH_PROT_IPV4) &&
+ (addr->proto == QETH_PROT_IPV4) &&
+ (tmp->type == addr->type) &&
+ (tmp->is_multicast == addr->is_multicast) &&
+ (tmp->u.a4.addr == addr->u.a4.addr) &&
+ (tmp->u.a4.mask == addr->u.a4.mask) ){
+ found = 1;
+ break;
+ }
+ if ((tmp->proto == QETH_PROT_IPV6) &&
+ (addr->proto == QETH_PROT_IPV6) &&
+ (tmp->type == addr->type) &&
+ (tmp->is_multicast == addr->is_multicast) &&
+ (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
+ (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
+ sizeof(struct in6_addr)) == 0) ){
+ found = 1;
+ break;
+ }
+ }
+ if (found){
+ if (addr->users != 0)
+ tmp->users += addr->users;
+ else
+ tmp->users += add? 1:-1;
+ if (tmp->users == 0){
+ list_del(&tmp->entry);
+ kfree(tmp);
+ }
+ return 0;
+ } else {
+ if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
+ list_add(&addr->entry, card->ip_tbd_list);
+ else {
+ if (addr->users == 0)
+ addr->users += add? 1:-1;
+ if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
+ qeth_is_addr_covered_by_ipato(card, addr)){
+ QETH_DBF_TEXT(trace, 2, "tkovaddr");
+ addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
+ }
+ list_add_tail(&addr->entry, card->ip_tbd_list);
+ }
+ return 1;
+ }
+}
+
+/**
+ * Remove IP address from list
+ */
+static int
+qeth_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,4,"delip");
+ if (addr->proto == QETH_PROT_IPV4)
+ QETH_DBF_HEX(trace,4,&addr->u.a4.addr,4);
+ else {
+ QETH_DBF_HEX(trace,4,&addr->u.a6.addr,8);
+ QETH_DBF_HEX(trace,4,((char *)&addr->u.a6.addr)+8,8);
+ }
+ spin_lock_irqsave(&card->ip_lock, flags);
+ rc = __qeth_insert_ip_todo(card, addr, 0);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return rc;
+}
+
+static int
+qeth_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,4,"addip");
+ if (addr->proto == QETH_PROT_IPV4)
+ QETH_DBF_HEX(trace,4,&addr->u.a4.addr,4);
+ else {
+ QETH_DBF_HEX(trace,4,&addr->u.a6.addr,8);
+ QETH_DBF_HEX(trace,4,((char *)&addr->u.a6.addr)+8,8);
+ }
+ spin_lock_irqsave(&card->ip_lock, flags);
+ rc = __qeth_insert_ip_todo(card, addr, 1);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return rc;
+}
+
+static inline void
+__qeth_delete_all_mc(struct qeth_card *card, unsigned long *flags)
+{
+ struct qeth_ipaddr *addr, *tmp;
+ int rc;
+
+ list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
+ if (addr->is_multicast) {
+ spin_unlock_irqrestore(&card->ip_lock, *flags);
+ rc = qeth_deregister_addr_entry(card, addr);
+ spin_lock_irqsave(&card->ip_lock, *flags);
+ if (!rc) {
+ list_del(&addr->entry);
+ kfree(addr);
+ }
+ }
+ }
+}
+
+static void
+qeth_set_ip_addr_list(struct qeth_card *card)
+{
+ struct list_head *tbd_list;
+ struct qeth_ipaddr *todo, *addr;
+ unsigned long flags;
+ int rc;
+
+ QETH_DBF_TEXT(trace, 2, "sdiplist");
+ QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
+
+ spin_lock_irqsave(&card->ip_lock, flags);
+ tbd_list = card->ip_tbd_list;
+ card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
+ if (!card->ip_tbd_list) {
+ QETH_DBF_TEXT(trace, 0, "silnomem");
+ card->ip_tbd_list = tbd_list;
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return;
+ } else
+ INIT_LIST_HEAD(card->ip_tbd_list);
+
+ while (!list_empty(tbd_list)){
+ todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
+ list_del(&todo->entry);
+ if (todo->type == QETH_IP_TYPE_DEL_ALL_MC){
+ __qeth_delete_all_mc(card, &flags);
+ kfree(todo);
+ continue;
+ }
+ rc = __qeth_ref_ip_on_card(card, todo, &addr);
+ if (rc == 0) {
+ /* nothing to be done; only adjusted refcount */
+ kfree(todo);
+ } else if (rc == 1) {
+ /* new entry to be added to on-card list */
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ rc = qeth_register_addr_entry(card, todo);
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (!rc)
+ list_add_tail(&todo->entry, &card->ip_list);
+ else
+ kfree(todo);
+ } else if (rc == -1) {
+ /* on-card entry to be removed */
+ list_del_init(&addr->entry);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ rc = qeth_deregister_addr_entry(card, addr);
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (!rc)
+ kfree(addr);
+ else
+ list_add_tail(&addr->entry, &card->ip_list);
+ kfree(todo);
+ }
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ kfree(tbd_list);
+}
+
+static void qeth_delete_mc_addresses(struct qeth_card *);
+static void qeth_add_multicast_ipv4(struct qeth_card *);
+#ifdef CONFIG_QETH_IPV6
+static void qeth_add_multicast_ipv6(struct qeth_card *);
+#endif
+
+static inline int
+qeth_set_thread_start_bit(struct qeth_card *card, unsigned long thread)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ if ( !(card->thread_allowed_mask & thread) ||
+ (card->thread_start_mask & thread) ) {
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ return -EPERM;
+ }
+ card->thread_start_mask |= thread;
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ return 0;
+}
+
+static void
+qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ card->thread_start_mask &= ~thread;
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ wake_up(&card->wait_q);
+}
+
+static void
+qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ card->thread_running_mask &= ~thread;
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ wake_up(&card->wait_q);
+}
+
+static inline int
+__qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ if (card->thread_start_mask & thread){
+ if ((card->thread_allowed_mask & thread) &&
+ !(card->thread_running_mask & thread)){
+ rc = 1;
+ card->thread_start_mask &= ~thread;
+ card->thread_running_mask |= thread;
+ } else
+ rc = -EPERM;
+ }
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ return rc;
+}
+
+static int
+qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
+{
+ int rc = 0;
+
+ wait_event(card->wait_q,
+ (rc = __qeth_do_run_thread(card, thread)) >= 0);
+ return rc;
+}
+
+static int
+qeth_register_ip_addresses(void *ptr)
+{
+ struct qeth_card *card;
+
+ card = (struct qeth_card *) ptr;
+ daemonize("qeth_reg_ip");
+ QETH_DBF_TEXT(trace,4,"regipth1");
+ if (!qeth_do_run_thread(card, QETH_SET_IP_THREAD))
+ return 0;
+ QETH_DBF_TEXT(trace,4,"regipth2");
+ qeth_set_ip_addr_list(card);
+ qeth_clear_thread_running_bit(card, QETH_SET_IP_THREAD);
+ return 0;
+}
+
+static int
+qeth_recover(void *ptr)
+{
+ struct qeth_card *card;
+ int rc = 0;
+
+ card = (struct qeth_card *) ptr;
+ daemonize("qeth_recover");
+ QETH_DBF_TEXT(trace,2,"recover1");
+ QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
+ if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
+ return 0;
+ QETH_DBF_TEXT(trace,2,"recover2");
+ PRINT_WARN("Recovery of device %s started ...\n",
+ CARD_BUS_ID(card));
+ card->use_hard_stop = 1;
+ qeth_set_offline(card->gdev);
+ rc = qeth_set_online(card->gdev);
+ if (!rc)
+ PRINT_INFO("Device %s successfully recovered!\n",
+ CARD_BUS_ID(card));
+ else
+ PRINT_INFO("Device %s could not be recovered!\n",
+ CARD_BUS_ID(card));
+ /* don't run another scheduled recovery */
+ qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
+ qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
+ return 0;
+}
+
+void
+qeth_schedule_recovery(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(trace,2,"startrec");
+
+ if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+}
+
+static int
+qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ QETH_DBF_TEXT_(trace, 4, " %02x%02x%02x",
+ (u8) card->thread_start_mask,
+ (u8) card->thread_allowed_mask,
+ (u8) card->thread_running_mask);
+ rc = (card->thread_start_mask & thread);
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ return rc;
+}
+
+static void
+qeth_start_kernel_thread(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(trace , 2, "strthrd");
+
+ if (card->read.state != CH_STATE_UP &&
+ card->write.state != CH_STATE_UP)
+ return;
+
+ if (qeth_do_start_thread(card, QETH_SET_IP_THREAD))
+ kernel_thread(qeth_register_ip_addresses, (void *)card,SIGCHLD);
+ if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
+ kernel_thread(qeth_recover, (void *) card, SIGCHLD);
+}
+
+
+static void
+qeth_set_intial_options(struct qeth_card *card)
+{
+ card->options.route4.type = NO_ROUTER;
+#ifdef CONFIG_QETH_IPV6
+ card->options.route6.type = NO_ROUTER;
+#endif /* QETH_IPV6 */
+ card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
+ card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
+ card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
+ card->options.fake_broadcast = 0;
+ card->options.add_hhlen = DEFAULT_ADD_HHLEN;
+ card->options.fake_ll = 0;
+ card->options.layer2 = 0;
+}
+
+/**
+ * initialize channels ,card and all state machines
+ */
+static int
+qeth_setup_card(struct qeth_card *card)
+{
+
+ QETH_DBF_TEXT(setup, 2, "setupcrd");
+ QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
+
+ card->read.state = CH_STATE_DOWN;
+ card->write.state = CH_STATE_DOWN;
+ card->data.state = CH_STATE_DOWN;
+ card->state = CARD_STATE_DOWN;
+ card->lan_online = 0;
+ card->use_hard_stop = 0;
+ card->dev = NULL;
+#ifdef CONFIG_QETH_VLAN
+ spin_lock_init(&card->vlanlock);
+ card->vlangrp = NULL;
+#endif
+ spin_lock_init(&card->ip_lock);
+ spin_lock_init(&card->thread_mask_lock);
+ card->thread_start_mask = 0;
+ card->thread_allowed_mask = 0;
+ card->thread_running_mask = 0;
+ INIT_WORK(&card->kernel_thread_starter,
+ (void *)qeth_start_kernel_thread,card);
+ INIT_LIST_HEAD(&card->ip_list);
+ card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
+ if (!card->ip_tbd_list) {
+ QETH_DBF_TEXT(setup, 0, "iptbdnom");
+ return -ENOMEM;
+ }
+ INIT_LIST_HEAD(card->ip_tbd_list);
+ INIT_LIST_HEAD(&card->cmd_waiter_list);
+ init_waitqueue_head(&card->wait_q);
+ /* intial options */
+ qeth_set_intial_options(card);
+ /* IP address takeover */
+ INIT_LIST_HEAD(&card->ipato.entries);
+ card->ipato.enabled = 0;
+ card->ipato.invert4 = 0;
+ card->ipato.invert6 = 0;
+ /* init QDIO stuff */
+ qeth_init_qdio_info(card);
+ return 0;
+}
+
+static int
+is_1920_device (struct qeth_card *card)
+{
+ int single_queue = 0;
+ struct ccw_device *ccwdev;
+ struct channelPath_dsc {
+ u8 flags;
+ u8 lsn;
+ u8 desc;
+ u8 chpid;
+ u8 swla;
+ u8 zeroes;
+ u8 chla;
+ u8 chpp;
+ } *chp_dsc;
+
+ QETH_DBF_TEXT(setup, 2, "chk_1920");
+
+ ccwdev = card->data.ccwdev;
+ chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
+ if (chp_dsc != NULL) {
+ /* CHPP field bit 6 == 1 -> single queue */
+ single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
+ kfree(chp_dsc);
+ }
+ QETH_DBF_TEXT_(setup, 2, "rc:%x", single_queue);
+ return single_queue;
+}
+
+static int
+qeth_determine_card_type(struct qeth_card *card)
+{
+ int i = 0;
+
+ QETH_DBF_TEXT(setup, 2, "detcdtyp");
+
+ while (known_devices[i][4]) {
+ if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
+ (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
+ card->info.type = known_devices[i][4];
+ if (is_1920_device(card)) {
+ PRINT_INFO("Priority Queueing not able "
+ "due to hardware limitations!\n");
+ card->qdio.no_out_queues = 1;
+ card->qdio.default_out_queue = 0;
+ } else {
+ card->qdio.no_out_queues = known_devices[i][8];
+ }
+ card->info.is_multicast_different = known_devices[i][9];
+ return 0;
+ }
+ i++;
+ }
+ card->info.type = QETH_CARD_TYPE_UNKNOWN;
+ PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
+ return -ENOENT;
+}
+
+static int
+qeth_probe_device(struct ccwgroup_device *gdev)
+{
+ struct qeth_card *card;
+ struct device *dev;
+ unsigned long flags;
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "probedev");
+
+ dev = &gdev->dev;
+ if (!get_device(dev))
+ return -ENODEV;
+
+ card = qeth_alloc_card();
+ if (!card) {
+ put_device(dev);
+ QETH_DBF_TEXT_(setup, 2, "1err%d", -ENOMEM);
+ return -ENOMEM;
+ }
+ card->read.ccwdev = gdev->cdev[0];
+ card->write.ccwdev = gdev->cdev[1];
+ card->data.ccwdev = gdev->cdev[2];
+
+ if ((rc = qeth_setup_card(card))){
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ put_device(dev);
+ qeth_free_card(card);
+ return rc;
+ }
+ gdev->dev.driver_data = card;
+ card->gdev = gdev;
+ gdev->cdev[0]->handler = qeth_irq;
+ gdev->cdev[1]->handler = qeth_irq;
+ gdev->cdev[2]->handler = qeth_irq;
+
+ rc = qeth_create_device_attributes(dev);
+ if (rc) {
+ put_device(dev);
+ qeth_free_card(card);
+ return rc;
+ }
+ if ((rc = qeth_determine_card_type(card))){
+ PRINT_WARN("%s: not a valid card type\n", __func__);
+ QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
+ put_device(dev);
+ qeth_free_card(card);
+ return rc;
+ }
+ /* insert into our internal list */
+ write_lock_irqsave(&qeth_card_list.rwlock, flags);
+ list_add_tail(&card->list, &qeth_card_list.list);
+ write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
+ return rc;
+}
+
+
+static int
+qeth_get_unitaddr(struct qeth_card *card)
+{
+ int length;
+ char *prcd;
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "getunit");
+ rc = read_conf_data(CARD_DDEV(card), (void **) &prcd, &length);
+ if (rc) {
+ PRINT_ERR("read_conf_data for device %s returned %i\n",
+ CARD_DDEV_ID(card), rc);
+ return rc;
+ }
+ card->info.chpid = prcd[30];
+ card->info.unit_addr2 = prcd[31];
+ card->info.cula = prcd[63];
+ card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
+ (prcd[0x11] == _ascebc['M']));
+ return 0;
+}
+
+static void
+qeth_init_tokens(struct qeth_card *card)
+{
+ card->token.issuer_rm_w = 0x00010103UL;
+ card->token.cm_filter_w = 0x00010108UL;
+ card->token.cm_connection_w = 0x0001010aUL;
+ card->token.ulp_filter_w = 0x0001010bUL;
+ card->token.ulp_connection_w = 0x0001010dUL;
+}
+
+static inline __u16
+raw_devno_from_bus_id(char *id)
+{
+ id += (strlen(id) - 4);
+ return (__u16) simple_strtoul(id, &id, 16);
+}
+/**
+ * setup channel
+ */
+static void
+qeth_setup_ccw(struct qeth_channel *channel,unsigned char *iob, __u32 len)
+{
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace, 4, "setupccw");
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ if (channel == &card->read)
+ memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
+ else
+ memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
+ channel->ccw.count = len;
+ channel->ccw.cda = (__u32) __pa(iob);
+}
+
+/**
+ * get free buffer for ccws (IDX activation, lancmds,ipassists...)
+ */
+static struct qeth_cmd_buffer *
+__qeth_get_buffer(struct qeth_channel *channel)
+{
+ __u8 index;
+
+ QETH_DBF_TEXT(trace, 6, "getbuff");
+ index = channel->io_buf_no;
+ do {
+ if (channel->iob[index].state == BUF_STATE_FREE) {
+ channel->iob[index].state = BUF_STATE_LOCKED;
+ channel->io_buf_no = (channel->io_buf_no + 1) %
+ QETH_CMD_BUFFER_NO;
+ memset(channel->iob[index].data, 0, QETH_BUFSIZE);
+ return channel->iob + index;
+ }
+ index = (index + 1) % QETH_CMD_BUFFER_NO;
+ } while(index != channel->io_buf_no);
+
+ return NULL;
+}
+
+/**
+ * release command buffer
+ */
+static void
+qeth_release_buffer(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
+{
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace, 6, "relbuff");
+ spin_lock_irqsave(&channel->iob_lock, flags);
+ memset(iob->data, 0, QETH_BUFSIZE);
+ iob->state = BUF_STATE_FREE;
+ iob->callback = qeth_send_control_data_cb;
+ iob->rc = 0;
+ spin_unlock_irqrestore(&channel->iob_lock, flags);
+}
+
+static struct qeth_cmd_buffer *
+qeth_get_buffer(struct qeth_channel *channel)
+{
+ struct qeth_cmd_buffer *buffer = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&channel->iob_lock, flags);
+ buffer = __qeth_get_buffer(channel);
+ spin_unlock_irqrestore(&channel->iob_lock, flags);
+ return buffer;
+}
+
+static struct qeth_cmd_buffer *
+qeth_wait_for_buffer(struct qeth_channel *channel)
+{
+ struct qeth_cmd_buffer *buffer;
+ wait_event(channel->wait_q,
+ ((buffer = qeth_get_buffer(channel)) != NULL));
+ return buffer;
+}
+
+static void
+qeth_clear_cmd_buffers(struct qeth_channel *channel)
+{
+ int cnt = 0;
+
+ for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++)
+ qeth_release_buffer(channel,&channel->iob[cnt]);
+ channel->buf_no = 0;
+ channel->io_buf_no = 0;
+}
+
+/**
+ * start IDX for read and write channel
+ */
+static int
+qeth_idx_activate_get_answer(struct qeth_channel *channel,
+ void (*idx_reply_cb)(struct qeth_channel *,
+ struct qeth_cmd_buffer *))
+{
+ struct qeth_cmd_buffer *iob;
+ unsigned long flags;
+ int rc;
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(setup, 2, "idxanswr");
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ iob = qeth_get_buffer(channel);
+ iob->callback = idx_reply_cb;
+ memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
+ channel->ccw.count = QETH_BUFSIZE;
+ channel->ccw.cda = (__u32) __pa(iob->data);
+
+ wait_event(card->wait_q,
+ atomic_compare_and_swap(0,1,&channel->irq_pending) == 0);
+ QETH_DBF_TEXT(setup, 6, "noirqpnd");
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_start(channel->ccwdev,
+ &channel->ccw,(addr_t) iob, 0, 0);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+
+ if (rc) {
+ PRINT_ERR("qeth: Error2 in activating channel rc=%d\n",rc);
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ atomic_set(&channel->irq_pending, 0);
+ wake_up(&card->wait_q);
+ return rc;
+ }
+ rc = wait_event_interruptible_timeout(card->wait_q,
+ channel->state == CH_STATE_UP, QETH_TIMEOUT);
+ if (rc == -ERESTARTSYS)
+ return rc;
+ if (channel->state != CH_STATE_UP){
+ rc = -ETIME;
+ QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
+ qeth_clear_cmd_buffers(channel);
+ } else
+ rc = 0;
+ return rc;
+}
+
+static int
+qeth_idx_activate_channel(struct qeth_channel *channel,
+ void (*idx_reply_cb)(struct qeth_channel *,
+ struct qeth_cmd_buffer *))
+{
+ struct qeth_card *card;
+ struct qeth_cmd_buffer *iob;
+ unsigned long flags;
+ __u16 temp;
+ int rc;
+
+ card = CARD_FROM_CDEV(channel->ccwdev);
+
+ QETH_DBF_TEXT(setup, 2, "idxactch");
+
+ iob = qeth_get_buffer(channel);
+ iob->callback = idx_reply_cb;
+ memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
+ channel->ccw.count = IDX_ACTIVATE_SIZE;
+ channel->ccw.cda = (__u32) __pa(iob->data);
+ if (channel == &card->write) {
+ memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
+ memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
+ &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
+ card->seqno.trans_hdr++;
+ } else {
+ memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
+ memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
+ &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
+ }
+ memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
+ &card->token.issuer_rm_w,QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
+ &card->info.func_level,sizeof(__u16));
+ temp = raw_devno_from_bus_id(CARD_DDEV_ID(card));
+ memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
+ temp = (card->info.cula << 8) + card->info.unit_addr2;
+ memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
+
+ wait_event(card->wait_q,
+ atomic_compare_and_swap(0,1,&channel->irq_pending) == 0);
+ QETH_DBF_TEXT(setup, 6, "noirqpnd");
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_start(channel->ccwdev,
+ &channel->ccw,(addr_t) iob, 0, 0);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+
+ if (rc) {
+ PRINT_ERR("qeth: Error1 in activating channel. rc=%d\n",rc);
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ atomic_set(&channel->irq_pending, 0);
+ wake_up(&card->wait_q);
+ return rc;
+ }
+ rc = wait_event_interruptible_timeout(card->wait_q,
+ channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
+ if (rc == -ERESTARTSYS)
+ return rc;
+ if (channel->state != CH_STATE_ACTIVATING) {
+ PRINT_WARN("qeth: IDX activate timed out!\n");
+ QETH_DBF_TEXT_(setup, 2, "2err%d", -ETIME);
+ qeth_clear_cmd_buffers(channel);
+ return -ETIME;
+ }
+ return qeth_idx_activate_get_answer(channel,idx_reply_cb);
+}
+
+static int
+qeth_peer_func_level(int level)
+{
+ if ((level & 0xff) == 8)
+ return (level & 0xff) + 0x400;
+ if (((level >> 8) & 3) == 1)
+ return (level & 0xff) + 0x200;
+ return level;
+}
+
+static void
+qeth_idx_write_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
+{
+ struct qeth_card *card;
+ __u16 temp;
+
+ QETH_DBF_TEXT(setup ,2, "idxwrcb");
+
+ if (channel->state == CH_STATE_DOWN) {
+ channel->state = CH_STATE_ACTIVATING;
+ goto out;
+ }
+ card = CARD_FROM_CDEV(channel->ccwdev);
+
+ if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
+ PRINT_ERR("IDX_ACTIVATE on write channel device %s: negative "
+ "reply\n", CARD_WDEV_ID(card));
+ goto out;
+ }
+ memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
+ if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
+ PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
+ "function level mismatch "
+ "(sent: 0x%x, received: 0x%x)\n",
+ CARD_WDEV_ID(card), card->info.func_level, temp);
+ goto out;
+ }
+ channel->state = CH_STATE_UP;
+out:
+ qeth_release_buffer(channel, iob);
+}
+
+static int
+qeth_check_idx_response(unsigned char *buffer)
+{
+ if (!buffer)
+ return 0;
+
+ QETH_DBF_HEX(control, 2, buffer, QETH_DBF_CONTROL_LEN);
+ if ((buffer[2] & 0xc0) == 0xc0) {
+ PRINT_WARN("received an IDX TERMINATE "
+ "with cause code 0x%02x%s\n",
+ buffer[4],
+ ((buffer[4] == 0x22) ?
+ " -- try another portname" : ""));
+ QETH_DBF_TEXT(trace, 2, "ckidxres");
+ QETH_DBF_TEXT(trace, 2, " idxterm");
+ QETH_DBF_TEXT_(trace, 2, " rc%d", -EIO);
+ return -EIO;
+ }
+ return 0;
+}
+
+static void
+qeth_idx_read_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
+{
+ struct qeth_card *card;
+ __u16 temp;
+
+ QETH_DBF_TEXT(setup , 2, "idxrdcb");
+ if (channel->state == CH_STATE_DOWN) {
+ channel->state = CH_STATE_ACTIVATING;
+ goto out;
+ }
+
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ if (qeth_check_idx_response(iob->data)) {
+ goto out;
+ }
+ if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
+ PRINT_ERR("IDX_ACTIVATE on read channel device %s: negative "
+ "reply\n", CARD_RDEV_ID(card));
+ goto out;
+ }
+
+/**
+ * temporary fix for microcode bug
+ * to revert it,replace OR by AND
+ */
+ if ( (!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
+ (card->info.type == QETH_CARD_TYPE_OSAE) )
+ card->info.portname_required = 1;
+
+ memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
+ if (temp != qeth_peer_func_level(card->info.func_level)) {
+ PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
+ "level mismatch (sent: 0x%x, received: 0x%x)\n",
+ CARD_RDEV_ID(card), card->info.func_level, temp);
+ goto out;
+ }
+ memcpy(&card->token.issuer_rm_r,
+ QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
+ QETH_MPC_TOKEN_LENGTH);
+ memcpy(&card->info.mcl_level[0],
+ QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
+ channel->state = CH_STATE_UP;
+out:
+ qeth_release_buffer(channel,iob);
+}
+
+static int
+qeth_issue_next_read(struct qeth_card *card)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(trace,5,"issnxrd");
+ if (card->read.state != CH_STATE_UP)
+ return -EIO;
+ iob = qeth_get_buffer(&card->read);
+ if (!iob) {
+ PRINT_WARN("issue_next_read failed: no iob available!\n");
+ return -ENOMEM;
+ }
+ qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
+ wait_event(card->wait_q,
+ atomic_compare_and_swap(0,1,&card->read.irq_pending) == 0);
+ QETH_DBF_TEXT(trace, 6, "noirqpnd");
+ rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
+ (addr_t) iob, 0, 0);
+ if (rc) {
+ PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
+ atomic_set(&card->read.irq_pending, 0);
+ qeth_schedule_recovery(card);
+ wake_up(&card->wait_q);
+ }
+ return rc;
+}
+
+static struct qeth_reply *
+qeth_alloc_reply(struct qeth_card *card)
+{
+ struct qeth_reply *reply;
+
+ reply = kmalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
+ if (reply){
+ memset(reply, 0, sizeof(struct qeth_reply));
+ atomic_set(&reply->refcnt, 1);
+ reply->card = card;
+ };
+ return reply;
+}
+
+static void
+qeth_get_reply(struct qeth_reply *reply)
+{
+ WARN_ON(atomic_read(&reply->refcnt) <= 0);
+ atomic_inc(&reply->refcnt);
+}
+
+static void
+qeth_put_reply(struct qeth_reply *reply)
+{
+ WARN_ON(atomic_read(&reply->refcnt) <= 0);
+ if (atomic_dec_and_test(&reply->refcnt))
+ kfree(reply);
+}
+
+static void
+qeth_cmd_timeout(unsigned long data)
+{
+ struct qeth_reply *reply, *list_reply, *r;
+ unsigned long flags;
+
+ reply = (struct qeth_reply *) data;
+ spin_lock_irqsave(&reply->card->lock, flags);
+ list_for_each_entry_safe(list_reply, r,
+ &reply->card->cmd_waiter_list, list) {
+ if (reply == list_reply){
+ qeth_get_reply(reply);
+ list_del_init(&reply->list);
+ spin_unlock_irqrestore(&reply->card->lock, flags);
+ reply->rc = -ETIME;
+ reply->received = 1;
+ wake_up(&reply->wait_q);
+ qeth_put_reply(reply);
+ return;
+ }
+ }
+ spin_unlock_irqrestore(&reply->card->lock, flags);
+}
+
+static void
+qeth_reset_ip_addresses(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(trace, 2, "rstipadd");
+
+ qeth_clear_ip_list(card, 0, 1);
+ /* this function will also schedule the SET_IP_THREAD */
+ qeth_set_multicast_list(card->dev);
+}
+
+static struct qeth_ipa_cmd *
+qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
+{
+ struct qeth_ipa_cmd *cmd = NULL;
+
+ QETH_DBF_TEXT(trace,5,"chkipad");
+ if (IS_IPA(iob->data)){
+ cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
+ if (IS_IPA_REPLY(cmd))
+ return cmd;
+ else {
+ switch (cmd->hdr.command) {
+ case IPA_CMD_STOPLAN:
+ PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
+ "there is a network problem or "
+ "someone pulled the cable or "
+ "disabled the port.\n",
+ QETH_CARD_IFNAME(card),
+ card->info.chpid);
+ card->lan_online = 0;
+ netif_carrier_off(card->dev);
+ return NULL;
+ case IPA_CMD_STARTLAN:
+ PRINT_INFO("Link reestablished on %s "
+ "(CHPID 0x%X). Scheduling "
+ "IP address reset.\n",
+ QETH_CARD_IFNAME(card),
+ card->info.chpid);
+ card->lan_online = 1;
+ netif_carrier_on(card->dev);
+ qeth_reset_ip_addresses(card);
+ return NULL;
+ case IPA_CMD_REGISTER_LOCAL_ADDR:
+ QETH_DBF_TEXT(trace,3, "irla");
+ break;
+ case IPA_CMD_UNREGISTER_LOCAL_ADDR:
+ QETH_DBF_TEXT(trace,3, "urla");
+ break;
+ default:
+ PRINT_WARN("Received data is IPA "
+ "but not a reply!\n");
+ break;
+ }
+ }
+ }
+ return cmd;
+}
+
+/**
+ * wake all waiting ipa commands
+ */
+static void
+qeth_clear_ipacmd_list(struct qeth_card *card)
+{
+ struct qeth_reply *reply, *r;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace, 4, "clipalst");
+
+ spin_lock_irqsave(&card->lock, flags);
+ list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
+ qeth_get_reply(reply);
+ reply->rc = -EIO;
+ reply->received = 1;
+ list_del_init(&reply->list);
+ wake_up(&reply->wait_q);
+ qeth_put_reply(reply);
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+qeth_send_control_data_cb(struct qeth_channel *channel,
+ struct qeth_cmd_buffer *iob)
+{
+ struct qeth_card *card;
+ struct qeth_reply *reply, *r;
+ struct qeth_ipa_cmd *cmd;
+ unsigned long flags;
+ int keep_reply;
+
+ QETH_DBF_TEXT(trace,4,"sndctlcb");
+
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ if (qeth_check_idx_response(iob->data)) {
+ qeth_clear_ipacmd_list(card);
+ qeth_schedule_recovery(card);
+ goto out;
+ }
+
+ cmd = qeth_check_ipa_data(card, iob);
+ if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
+ goto out;
+
+ spin_lock_irqsave(&card->lock, flags);
+ list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
+ if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
+ ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
+ qeth_get_reply(reply);
+ list_del_init(&reply->list);
+ spin_unlock_irqrestore(&card->lock, flags);
+ keep_reply = 0;
+ if (reply->callback != NULL) {
+ if (cmd) {
+ reply->offset = (__u16)((char*)cmd -
+ (char *)iob->data);
+ keep_reply = reply->callback(card,
+ reply,
+ (unsigned long)cmd);
+ }
+ else
+ keep_reply = reply->callback(card,
+ reply,
+ (unsigned long)iob);
+ }
+ if (cmd)
+ reply->rc = (u16) cmd->hdr.return_code;
+ else if (iob->rc)
+ reply->rc = iob->rc;
+ if (keep_reply) {
+ spin_lock_irqsave(&card->lock, flags);
+ list_add_tail(&reply->list,
+ &card->cmd_waiter_list);
+ spin_unlock_irqrestore(&card->lock, flags);
+ } else {
+ reply->received = 1;
+ wake_up(&reply->wait_q);
+ }
+ qeth_put_reply(reply);
+ goto out;
+ }
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+out:
+ memcpy(&card->seqno.pdu_hdr_ack,
+ QETH_PDU_HEADER_SEQ_NO(iob->data),
+ QETH_SEQ_NO_LENGTH);
+ qeth_release_buffer(channel,iob);
+}
+
+static int
+qeth_send_control_data(struct qeth_card *card, int len,
+ struct qeth_cmd_buffer *iob,
+ int (*reply_cb)
+ (struct qeth_card *, struct qeth_reply*, unsigned long),
+ void *reply_param)
+
+{
+ int rc;
+ unsigned long flags;
+ struct qeth_reply *reply;
+ struct timer_list timer;
+
+ QETH_DBF_TEXT(trace, 2, "sendctl");
+
+ qeth_setup_ccw(&card->write,iob->data,len);
+
+ memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
+ &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
+ card->seqno.trans_hdr++;
+
+ memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
+ &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
+ card->seqno.pdu_hdr++;
+ memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
+ &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
+ iob->callback = qeth_release_buffer;
+
+ reply = qeth_alloc_reply(card);
+ if (!reply) {
+ PRINT_WARN("Could no alloc qeth_reply!\n");
+ return -ENOMEM;
+ }
+ reply->callback = reply_cb;
+ reply->param = reply_param;
+ if (card->state == CARD_STATE_DOWN)
+ reply->seqno = QETH_IDX_COMMAND_SEQNO;
+ else
+ reply->seqno = card->seqno.ipa++;
+ init_timer(&timer);
+ timer.function = qeth_cmd_timeout;
+ timer.data = (unsigned long) reply;
+ if (IS_IPA(iob->data))
+ timer.expires = jiffies + QETH_IPA_TIMEOUT;
+ else
+ timer.expires = jiffies + QETH_TIMEOUT;
+ init_waitqueue_head(&reply->wait_q);
+ spin_lock_irqsave(&card->lock, flags);
+ list_add_tail(&reply->list, &card->cmd_waiter_list);
+ spin_unlock_irqrestore(&card->lock, flags);
+ QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
+ wait_event(card->wait_q,
+ atomic_compare_and_swap(0,1,&card->write.irq_pending) == 0);
+ QETH_DBF_TEXT(trace, 6, "noirqpnd");
+ spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
+ rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
+ (addr_t) iob, 0, 0);
+ spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
+ if (rc){
+ PRINT_WARN("qeth_send_control_data: "
+ "ccw_device_start rc = %i\n", rc);
+ QETH_DBF_TEXT_(trace, 2, " err%d", rc);
+ spin_lock_irqsave(&card->lock, flags);
+ list_del_init(&reply->list);
+ qeth_put_reply(reply);
+ spin_unlock_irqrestore(&card->lock, flags);
+ qeth_release_buffer(iob->channel, iob);
+ atomic_set(&card->write.irq_pending, 0);
+ wake_up(&card->wait_q);
+ return rc;
+ }
+ add_timer(&timer);
+ wait_event(reply->wait_q, reply->received);
+ del_timer_sync(&timer);
+ rc = reply->rc;
+ qeth_put_reply(reply);
+ return rc;
+}
+
+static int
+qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
+ int (*reply_cb)
+ (struct qeth_card *,struct qeth_reply*, unsigned long),
+ void *reply_param)
+{
+ int rc;
+ char prot_type;
+
+ QETH_DBF_TEXT(trace,4,"sendipa");
+
+ memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
+
+ if (card->options.layer2)
+ prot_type = QETH_PROT_LAYER2;
+ else
+ prot_type = QETH_PROT_TCPIP;
+
+ memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data),&prot_type,1);
+ memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
+ &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
+
+ rc = qeth_send_control_data(card, IPA_CMD_LENGTH, iob,
+ reply_cb, reply_param);
+ return rc;
+}
+
+
+static int
+qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup, 2, "cmenblcb");
+
+ iob = (struct qeth_cmd_buffer *) data;
+ memcpy(&card->token.cm_filter_r,
+ QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
+ QETH_MPC_TOKEN_LENGTH);
+ QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
+ return 0;
+}
+
+static int
+qeth_cm_enable(struct qeth_card *card)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup,2,"cmenable");
+
+ iob = qeth_wait_for_buffer(&card->write);
+ memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
+ memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
+ &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
+ &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
+
+ rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
+ qeth_cm_enable_cb, NULL);
+ return rc;
+}
+
+static int
+qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup, 2, "cmsetpcb");
+
+ iob = (struct qeth_cmd_buffer *) data;
+ memcpy(&card->token.cm_connection_r,
+ QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
+ QETH_MPC_TOKEN_LENGTH);
+ QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
+ return 0;
+}
+
+static int
+qeth_cm_setup(struct qeth_card *card)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup,2,"cmsetup");
+
+ iob = qeth_wait_for_buffer(&card->write);
+ memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
+ memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
+ &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
+ &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
+ &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
+ rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
+ qeth_cm_setup_cb, NULL);
+ return rc;
+
+}
+
+static int
+qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+
+ __u16 mtu, framesize;
+ __u16 len;
+ __u8 link_type;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup, 2, "ulpenacb");
+
+ iob = (struct qeth_cmd_buffer *) data;
+ memcpy(&card->token.ulp_filter_r,
+ QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
+ QETH_MPC_TOKEN_LENGTH);
+ if (qeth_get_mtu_out_of_mpc(card->info.type)) {
+ memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
+ mtu = qeth_get_mtu_outof_framesize(framesize);
+ if (!mtu) {
+ iob->rc = -EINVAL;
+ QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
+ return 0;
+ }
+ card->info.max_mtu = mtu;
+ card->info.initial_mtu = mtu;
+ card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
+ } else {
+ card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
+ card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
+ card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
+ }
+
+ memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
+ if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
+ memcpy(&link_type,
+ QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
+ card->info.link_type = link_type;
+ } else
+ card->info.link_type = 0;
+ QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
+ return 0;
+}
+
+static int
+qeth_ulp_enable(struct qeth_card *card)
+{
+ int rc;
+ char prot_type;
+ struct qeth_cmd_buffer *iob;
+
+ /*FIXME: trace view callbacks*/
+ QETH_DBF_TEXT(setup,2,"ulpenabl");
+
+ iob = qeth_wait_for_buffer(&card->write);
+ memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
+
+ *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
+ (__u8) card->info.portno;
+ if (card->options.layer2)
+ prot_type = QETH_PROT_LAYER2;
+ else
+ prot_type = QETH_PROT_TCPIP;
+
+ memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data),&prot_type,1);
+ memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
+ &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
+ &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
+ card->info.portname, 9);
+ rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
+ qeth_ulp_enable_cb, NULL);
+ return rc;
+
+}
+
+static inline __u16
+__raw_devno_from_bus_id(char *id)
+{
+ id += (strlen(id) - 4);
+ return (__u16) simple_strtoul(id, &id, 16);
+}
+
+static int
+qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup, 2, "ulpstpcb");
+
+ iob = (struct qeth_cmd_buffer *) data;
+ memcpy(&card->token.ulp_connection_r,
+ QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
+ QETH_MPC_TOKEN_LENGTH);
+ QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
+ return 0;
+}
+
+static int
+qeth_ulp_setup(struct qeth_card *card)
+{
+ int rc;
+ __u16 temp;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup,2,"ulpsetup");
+
+ iob = qeth_wait_for_buffer(&card->write);
+ memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
+
+ memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
+ &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
+ &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
+ &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
+
+ temp = __raw_devno_from_bus_id(CARD_DDEV_ID(card));
+ memcpy(QETH_ULP_SETUP_CUA(iob->data), &temp, 2);
+ temp = (card->info.cula << 8) + card->info.unit_addr2;
+ memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
+ rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
+ qeth_ulp_setup_cb, NULL);
+ return rc;
+}
+
+static inline int
+qeth_check_for_inbound_error(struct qeth_qdio_buffer *buf,
+ unsigned int qdio_error,
+ unsigned int siga_error)
+{
+ int rc = 0;
+
+ if (qdio_error || siga_error) {
+ QETH_DBF_TEXT(trace, 2, "qdinerr");
+ QETH_DBF_TEXT(qerr, 2, "qdinerr");
+ QETH_DBF_TEXT_(qerr, 2, " F15=%02X",
+ buf->buffer->element[15].flags & 0xff);
+ QETH_DBF_TEXT_(qerr, 2, " F14=%02X",
+ buf->buffer->element[14].flags & 0xff);
+ QETH_DBF_TEXT_(qerr, 2, " qerr=%X", qdio_error);
+ QETH_DBF_TEXT_(qerr, 2, " serr=%X", siga_error);
+ rc = 1;
+ }
+ return rc;
+}
+
+static inline struct sk_buff *
+qeth_get_skb(unsigned int length)
+{
+ struct sk_buff* skb;
+#ifdef CONFIG_QETH_VLAN
+ if ((skb = dev_alloc_skb(length + VLAN_HLEN)))
+ skb_reserve(skb, VLAN_HLEN);
+#else
+ skb = dev_alloc_skb(length);
+#endif
+ return skb;
+}
+
+static inline struct sk_buff *
+qeth_get_next_skb(struct qeth_card *card, struct qdio_buffer *buffer,
+ struct qdio_buffer_element **__element, int *__offset,
+ struct qeth_hdr **hdr)
+{
+ struct qdio_buffer_element *element = *__element;
+ int offset = *__offset;
+ struct sk_buff *skb = NULL;
+ int skb_len;
+ void *data_ptr;
+ int data_len;
+
+ QETH_DBF_TEXT(trace,6,"nextskb");
+ /* qeth_hdr must not cross element boundaries */
+ if (element->length < offset + sizeof(struct qeth_hdr)){
+ if (qeth_is_last_sbale(element))
+ return NULL;
+ element++;
+ offset = 0;
+ if (element->length < sizeof(struct qeth_hdr))
+ return NULL;
+ }
+ *hdr = element->addr + offset;
+
+ offset += sizeof(struct qeth_hdr);
+ if (card->options.layer2)
+ skb_len = (*hdr)->hdr.l2.pkt_length;
+ else
+ skb_len = (*hdr)->hdr.l3.length;
+
+ if (!skb_len)
+ return NULL;
+ if (card->options.fake_ll){
+ if (!(skb = qeth_get_skb(skb_len + QETH_FAKE_LL_LEN)))
+ goto no_mem;
+ skb_pull(skb, QETH_FAKE_LL_LEN);
+ } else if (!(skb = qeth_get_skb(skb_len)))
+ goto no_mem;
+ data_ptr = element->addr + offset;
+ while (skb_len) {
+ data_len = min(skb_len, (int)(element->length - offset));
+ if (data_len)
+ memcpy(skb_put(skb, data_len), data_ptr, data_len);
+ skb_len -= data_len;
+ if (skb_len){
+ if (qeth_is_last_sbale(element)){
+ QETH_DBF_TEXT(trace,4,"unexeob");
+ QETH_DBF_TEXT_(trace,4,"%s",CARD_BUS_ID(card));
+ QETH_DBF_TEXT(qerr,2,"unexeob");
+ QETH_DBF_TEXT_(qerr,2,"%s",CARD_BUS_ID(card));
+ QETH_DBF_HEX(misc,4,buffer,sizeof(*buffer));
+ dev_kfree_skb_any(skb);
+ card->stats.rx_errors++;
+ return NULL;
+ }
+ element++;
+ offset = 0;
+ data_ptr = element->addr;
+ } else {
+ offset += data_len;
+ }
+ }
+ *__element = element;
+ *__offset = offset;
+ return skb;
+no_mem:
+ if (net_ratelimit()){
+ PRINT_WARN("No memory for packet received on %s.\n",
+ QETH_CARD_IFNAME(card));
+ QETH_DBF_TEXT(trace,2,"noskbmem");
+ QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
+ }
+ card->stats.rx_dropped++;
+ return NULL;
+}
+
+static inline unsigned short
+qeth_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+ struct qeth_card *card;
+ struct ethhdr *eth;
+
+ QETH_DBF_TEXT(trace,6,"typtrans");
+
+ card = (struct qeth_card *)dev->priv;
+#ifdef CONFIG_TR
+ if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
+ (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
+ return tr_type_trans(skb,dev);
+#endif /* CONFIG_TR */
+ skb->mac.raw = skb->data;
+ skb_pull(skb, ETH_HLEN );
+ eth = eth_hdr(skb);
+
+ if (*eth->h_dest & 1) {
+ if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_MULTICAST;
+ } else if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
+ skb->pkt_type = PACKET_OTHERHOST;
+
+ if (ntohs(eth->h_proto) >= 1536)
+ return eth->h_proto;
+ if (*(unsigned short *) (skb->data) == 0xFFFF)
+ return htons(ETH_P_802_3);
+ return htons(ETH_P_802_2);
+}
+
+static inline void
+qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *hdr)
+{
+ struct ethhdr *fake_hdr;
+ struct iphdr *ip_hdr;
+
+ QETH_DBF_TEXT(trace,5,"skbfake");
+ skb->mac.raw = skb->data - QETH_FAKE_LL_LEN;
+ /* this is a fake ethernet header */
+ fake_hdr = (struct ethhdr *) skb->mac.raw;
+
+ /* the destination MAC address */
+ switch (skb->pkt_type){
+ case PACKET_MULTICAST:
+ switch (skb->protocol){
+#ifdef CONFIG_QETH_IPV6
+ case __constant_htons(ETH_P_IPV6):
+ ndisc_mc_map((struct in6_addr *)
+ skb->data + QETH_FAKE_LL_V6_ADDR_POS,
+ fake_hdr->h_dest, card->dev, 0);
+ break;
+#endif /* CONFIG_QETH_IPV6 */
+ case __constant_htons(ETH_P_IP):
+ ip_hdr = (struct iphdr *)skb->data;
+ if (card->dev->type == ARPHRD_IEEE802_TR)
+ ip_tr_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
+ else
+ ip_eth_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
+ break;
+ default:
+ memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
+ }
+ break;
+ case PACKET_BROADCAST:
+ memset(fake_hdr->h_dest, 0xff, ETH_ALEN);
+ break;
+ default:
+ memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
+ }
+ /* the source MAC address */
+ if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
+ memcpy(fake_hdr->h_source, &hdr->hdr.l3.dest_addr[2], ETH_ALEN);
+ else
+ memset(fake_hdr->h_source, 0, ETH_ALEN);
+ /* the protocol */
+ fake_hdr->h_proto = skb->protocol;
+}
+
+static inline void
+qeth_rebuild_skb_vlan(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *hdr)
+{
+#ifdef CONFIG_QETH_VLAN
+ u16 *vlan_tag;
+
+ if (hdr->hdr.l3.ext_flags &
+ (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
+ vlan_tag = (u16 *) skb_push(skb, VLAN_HLEN);
+ *vlan_tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
+ hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
+ *(vlan_tag + 1) = skb->protocol;
+ skb->protocol = __constant_htons(ETH_P_8021Q);
+ }
+#endif /* CONFIG_QETH_VLAN */
+}
+
+static inline __u16
+qeth_layer2_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *hdr)
+{
+ unsigned short vlan_id = 0;
+#ifdef CONFIG_QETH_VLAN
+ struct vlan_hdr *vhdr;
+#endif
+
+ skb->pkt_type = PACKET_HOST;
+ skb->protocol = qeth_type_trans(skb, skb->dev);
+ if (card->options.checksum_type == NO_CHECKSUMMING)
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb->ip_summed = CHECKSUM_NONE;
+#ifdef CONFIG_QETH_VLAN
+ if (hdr->hdr.l2.flags[2] & (QETH_LAYER2_FLAG_VLAN)) {
+ vhdr = (struct vlan_hdr *) skb->data;
+ skb->protocol =
+ __constant_htons(vhdr->h_vlan_encapsulated_proto);
+ vlan_id = hdr->hdr.l2.vlan_id;
+ skb_pull(skb, VLAN_HLEN);
+ }
+#endif
+ return vlan_id;
+}
+
+static inline void
+qeth_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *hdr)
+{
+#ifdef CONFIG_QETH_IPV6
+ if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
+ skb->pkt_type = PACKET_HOST;
+ skb->protocol = qeth_type_trans(skb, card->dev);
+ return;
+ }
+#endif /* CONFIG_QETH_IPV6 */
+ skb->protocol = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
+ ETH_P_IP);
+ switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK){
+ case QETH_CAST_UNICAST:
+ skb->pkt_type = PACKET_HOST;
+ break;
+ case QETH_CAST_MULTICAST:
+ skb->pkt_type = PACKET_MULTICAST;
+ card->stats.multicast++;
+ break;
+ case QETH_CAST_BROADCAST:
+ skb->pkt_type = PACKET_BROADCAST;
+ card->stats.multicast++;
+ break;
+ case QETH_CAST_ANYCAST:
+ case QETH_CAST_NOCAST:
+ default:
+ skb->pkt_type = PACKET_HOST;
+ }
+ qeth_rebuild_skb_vlan(card, skb, hdr);
+ if (card->options.fake_ll)
+ qeth_rebuild_skb_fake_ll(card, skb, hdr);
+ else
+ skb->mac.raw = skb->data;
+ skb->ip_summed = card->options.checksum_type;
+ if (card->options.checksum_type == HW_CHECKSUMMING){
+ if ( (hdr->hdr.l3.ext_flags &
+ (QETH_HDR_EXT_CSUM_HDR_REQ |
+ QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
+ (QETH_HDR_EXT_CSUM_HDR_REQ |
+ QETH_HDR_EXT_CSUM_TRANSP_REQ) )
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb->ip_summed = SW_CHECKSUMMING;
+ }
+}
+
+static inline void
+qeth_process_inbound_buffer(struct qeth_card *card,
+ struct qeth_qdio_buffer *buf, int index)
+{
+ struct qdio_buffer_element *element;
+ struct sk_buff *skb;
+ struct qeth_hdr *hdr;
+ int offset;
+ int rxrc;
+ __u16 vlan_tag = 0;
+
+ /* get first element of current buffer */
+ element = (struct qdio_buffer_element *)&buf->buffer->element[0];
+ offset = 0;
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.bufs_rec++;
+#endif
+ while((skb = qeth_get_next_skb(card, buf->buffer, &element,
+ &offset, &hdr))) {
+ skb->dev = card->dev;
+ if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
+ vlan_tag = qeth_layer2_rebuild_skb(card, skb, hdr);
+ else
+ qeth_rebuild_skb(card, skb, hdr);
+ /* is device UP ? */
+ if (!(card->dev->flags & IFF_UP)){
+ dev_kfree_skb_any(skb);
+ continue;
+ }
+#ifdef CONFIG_QETH_VLAN
+ if (vlan_tag)
+ vlan_hwaccel_rx(skb, card->vlangrp, vlan_tag);
+ else
+#endif
+ rxrc = netif_rx(skb);
+ card->dev->last_rx = jiffies;
+ card->stats.rx_packets++;
+ card->stats.rx_bytes += skb->len;
+ }
+}
+
+static inline struct qeth_buffer_pool_entry *
+qeth_get_buffer_pool_entry(struct qeth_card *card)
+{
+ struct qeth_buffer_pool_entry *entry;
+
+ QETH_DBF_TEXT(trace, 6, "gtbfplen");
+ if (!list_empty(&card->qdio.in_buf_pool.entry_list)) {
+ entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
+ struct qeth_buffer_pool_entry, list);
+ list_del_init(&entry->list);
+ return entry;
+ }
+ return NULL;
+}
+
+static inline void
+qeth_init_input_buffer(struct qeth_card *card, struct qeth_qdio_buffer *buf)
+{
+ struct qeth_buffer_pool_entry *pool_entry;
+ int i;
+
+ pool_entry = qeth_get_buffer_pool_entry(card);
+ /*
+ * since the buffer is accessed only from the input_tasklet
+ * there shouldn't be a need to synchronize; also, since we use
+ * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
+ * buffers
+ */
+ BUG_ON(!pool_entry);
+
+ buf->pool_entry = pool_entry;
+ for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
+ buf->buffer->element[i].length = PAGE_SIZE;
+ buf->buffer->element[i].addr = pool_entry->elements[i];
+ if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
+ buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
+ else
+ buf->buffer->element[i].flags = 0;
+ }
+ buf->state = QETH_QDIO_BUF_EMPTY;
+}
+
+static inline void
+qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
+ struct qeth_qdio_out_buffer *buf)
+{
+ int i;
+ struct sk_buff *skb;
+
+ /* is PCI flag set on buffer? */
+ if (buf->buffer->element[0].flags & 0x40)
+ atomic_dec(&queue->set_pci_flags_count);
+
+ while ((skb = skb_dequeue(&buf->skb_list))){
+ atomic_dec(&skb->users);
+ dev_kfree_skb_any(skb);
+ }
+ qeth_eddp_buf_release_contexts(buf);
+ for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i){
+ buf->buffer->element[i].length = 0;
+ buf->buffer->element[i].addr = NULL;
+ buf->buffer->element[i].flags = 0;
+ }
+ buf->next_element_to_fill = 0;
+ atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
+}
+
+static inline void
+qeth_queue_input_buffer(struct qeth_card *card, int index)
+{
+ struct qeth_qdio_q *queue = card->qdio.in_q;
+ int count;
+ int i;
+ int rc;
+
+ QETH_DBF_TEXT(trace,6,"queinbuf");
+ count = (index < queue->next_buf_to_init)?
+ card->qdio.in_buf_pool.buf_count -
+ (queue->next_buf_to_init - index) :
+ card->qdio.in_buf_pool.buf_count -
+ (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
+ /* only requeue at a certain threshold to avoid SIGAs */
+ if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)){
+ for (i = queue->next_buf_to_init;
+ i < queue->next_buf_to_init + count; ++i)
+ qeth_init_input_buffer(card,
+ &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]);
+ /*
+ * according to old code it should be avoided to requeue all
+ * 128 buffers in order to benefit from PCI avoidance.
+ * this function keeps at least one buffer (the buffer at
+ * 'index') un-requeued -> this buffer is the first buffer that
+ * will be requeued the next time
+ */
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.inbound_do_qdio_cnt++;
+ card->perf_stats.inbound_do_qdio_start_time = qeth_get_micros();
+#endif
+ rc = do_QDIO(CARD_DDEV(card),
+ QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
+ 0, queue->next_buf_to_init, count, NULL);
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.inbound_do_qdio_time += qeth_get_micros() -
+ card->perf_stats.inbound_do_qdio_start_time;
+#endif
+ if (rc){
+ PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
+ "return %i (device %s).\n",
+ rc, CARD_DDEV_ID(card));
+ QETH_DBF_TEXT(trace,2,"qinberr");
+ QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
+ }
+ queue->next_buf_to_init = (queue->next_buf_to_init + count) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ }
+}
+
+static inline void
+qeth_put_buffer_pool_entry(struct qeth_card *card,
+ struct qeth_buffer_pool_entry *entry)
+{
+ QETH_DBF_TEXT(trace, 6, "ptbfplen");
+ list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
+}
+
+static void
+qeth_qdio_input_handler(struct ccw_device * ccwdev, unsigned int status,
+ unsigned int qdio_err, unsigned int siga_err,
+ unsigned int queue, int first_element, int count,
+ unsigned long card_ptr)
+{
+ struct net_device *net_dev;
+ struct qeth_card *card;
+ struct qeth_qdio_buffer *buffer;
+ int index;
+ int i;
+
+ QETH_DBF_TEXT(trace, 6, "qdinput");
+ card = (struct qeth_card *) card_ptr;
+ net_dev = card->dev;
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.inbound_cnt++;
+ card->perf_stats.inbound_start_time = qeth_get_micros();
+#endif
+ if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
+ if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
+ QETH_DBF_TEXT(trace, 1,"qdinchk");
+ QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
+ QETH_DBF_TEXT_(trace,1,"%04X%04X",first_element,count);
+ QETH_DBF_TEXT_(trace,1,"%04X%04X", queue, status);
+ qeth_schedule_recovery(card);
+ return;
+ }
+ }
+ for (i = first_element; i < (first_element + count); ++i) {
+ index = i % QDIO_MAX_BUFFERS_PER_Q;
+ buffer = &card->qdio.in_q->bufs[index];
+ if (!((status == QDIO_STATUS_LOOK_FOR_ERROR) &&
+ qeth_check_for_inbound_error(buffer, qdio_err, siga_err)))
+ qeth_process_inbound_buffer(card, buffer, index);
+ /* clear buffer and give back to hardware */
+ qeth_put_buffer_pool_entry(card, buffer->pool_entry);
+ qeth_queue_input_buffer(card, index);
+ }
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.inbound_time += qeth_get_micros() -
+ card->perf_stats.inbound_start_time;
+#endif
+}
+
+static inline int
+qeth_handle_send_error(struct qeth_card *card,
+ struct qeth_qdio_out_buffer *buffer,
+ int qdio_err, int siga_err)
+{
+ int sbalf15 = buffer->buffer->element[15].flags & 0xff;
+ int cc = siga_err & 3;
+
+ QETH_DBF_TEXT(trace, 6, "hdsnderr");
+ switch (cc) {
+ case 0:
+ if (qdio_err){
+ QETH_DBF_TEXT(trace, 1,"lnkfail");
+ QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
+ QETH_DBF_TEXT_(trace,1,"%04x %02x",
+ (u16)qdio_err, (u8)sbalf15);
+ return QETH_SEND_ERROR_LINK_FAILURE;
+ }
+ return QETH_SEND_ERROR_NONE;
+ case 2:
+ if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
+ QETH_DBF_TEXT(trace, 1, "SIGAcc2B");
+ QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
+ return QETH_SEND_ERROR_KICK_IT;
+ }
+ if ((sbalf15 >= 15) && (sbalf15 <= 31))
+ return QETH_SEND_ERROR_RETRY;
+ return QETH_SEND_ERROR_LINK_FAILURE;
+ /* look at qdio_error and sbalf 15 */
+ case 1:
+ QETH_DBF_TEXT(trace, 1, "SIGAcc1");
+ QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
+ return QETH_SEND_ERROR_LINK_FAILURE;
+ case 3:
+ QETH_DBF_TEXT(trace, 1, "SIGAcc3");
+ QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
+ return QETH_SEND_ERROR_KICK_IT;
+ }
+ return QETH_SEND_ERROR_LINK_FAILURE;
+}
+
+void
+qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
+ int index, int count)
+{
+ struct qeth_qdio_out_buffer *buf;
+ int rc;
+ int i;
+
+ QETH_DBF_TEXT(trace, 6, "flushbuf");
+
+ for (i = index; i < index + count; ++i) {
+ buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
+ buf->buffer->element[buf->next_element_to_fill - 1].flags |=
+ SBAL_FLAGS_LAST_ENTRY;
+
+ if (queue->card->info.type == QETH_CARD_TYPE_IQD)
+ continue;
+
+ if (!queue->do_pack){
+ if ((atomic_read(&queue->used_buffers) >=
+ (QETH_HIGH_WATERMARK_PACK -
+ QETH_WATERMARK_PACK_FUZZ)) &&
+ !atomic_read(&queue->set_pci_flags_count)){
+ /* it's likely that we'll go to packing
+ * mode soon */
+ atomic_inc(&queue->set_pci_flags_count);
+ buf->buffer->element[0].flags |= 0x40;
+ }
+ } else {
+ if (!atomic_read(&queue->set_pci_flags_count)){
+ /*
+ * there's no outstanding PCI any more, so we
+ * have to request a PCI to be sure the the PCI
+ * will wake at some time in the future then we
+ * can flush packed buffers that might still be
+ * hanging around, which can happen if no
+ * further send was requested by the stack
+ */
+ atomic_inc(&queue->set_pci_flags_count);
+ buf->buffer->element[0].flags |= 0x40;
+ }
+ }
+ }
+
+ queue->card->dev->trans_start = jiffies;
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.outbound_do_qdio_cnt++;
+ queue->card->perf_stats.outbound_do_qdio_start_time = qeth_get_micros();
+#endif
+ if (under_int)
+ rc = do_QDIO(CARD_DDEV(queue->card),
+ QDIO_FLAG_SYNC_OUTPUT | QDIO_FLAG_UNDER_INTERRUPT,
+ queue->queue_no, index, count, NULL);
+ else
+ rc = do_QDIO(CARD_DDEV(queue->card), QDIO_FLAG_SYNC_OUTPUT,
+ queue->queue_no, index, count, NULL);
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.outbound_do_qdio_time += qeth_get_micros() -
+ queue->card->perf_stats.outbound_do_qdio_start_time;
+#endif
+ if (rc){
+ QETH_DBF_SPRINTF(trace, 0, "qeth_flush_buffers: do_QDIO "
+ "returned error (%i) on device %s.",
+ rc, CARD_DDEV_ID(queue->card));
+ QETH_DBF_TEXT(trace, 2, "flushbuf");
+ QETH_DBF_TEXT_(trace, 2, " err%d", rc);
+ queue->card->stats.tx_errors += count;
+ /* this must not happen under normal circumstances. if it
+ * happens something is really wrong -> recover */
+ qeth_schedule_recovery(queue->card);
+ return;
+ }
+ atomic_add(count, &queue->used_buffers);
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.bufs_sent += count;
+#endif
+}
+
+/*
+ * Switched to packing state if the number of used buffers on a queue
+ * reaches a certain limit.
+ */
+static inline void
+qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
+{
+ if (!queue->do_pack) {
+ if (atomic_read(&queue->used_buffers)
+ >= QETH_HIGH_WATERMARK_PACK){
+ /* switch non-PACKING -> PACKING */
+ QETH_DBF_TEXT(trace, 6, "np->pack");
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.sc_dp_p++;
+#endif
+ queue->do_pack = 1;
+ }
+ }
+}
+
+/*
+ * Switches from packing to non-packing mode. If there is a packing
+ * buffer on the queue this buffer will be prepared to be flushed.
+ * In that case 1 is returned to inform the caller. If no buffer
+ * has to be flushed, zero is returned.
+ */
+static inline int
+qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
+{
+ struct qeth_qdio_out_buffer *buffer;
+ int flush_count = 0;
+
+ if (queue->do_pack) {
+ if (atomic_read(&queue->used_buffers)
+ <= QETH_LOW_WATERMARK_PACK) {
+ /* switch PACKING -> non-PACKING */
+ QETH_DBF_TEXT(trace, 6, "pack->np");
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.sc_p_dp++;
+#endif
+ queue->do_pack = 0;
+ /* flush packing buffers */
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ if ((atomic_read(&buffer->state) ==
+ QETH_QDIO_BUF_EMPTY) &&
+ (buffer->next_element_to_fill > 0)) {
+ atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
+ flush_count++;
+ queue->next_buf_to_fill =
+ (queue->next_buf_to_fill + 1) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ }
+ }
+ }
+ return flush_count;
+}
+
+/*
+ * Called to flush a packing buffer if no more pci flags are on the queue.
+ * Checks if there is a packing buffer and prepares it to be flushed.
+ * In that case returns 1, otherwise zero.
+ */
+static inline int
+qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
+{
+ struct qeth_qdio_out_buffer *buffer;
+
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ if((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
+ (buffer->next_element_to_fill > 0)){
+ /* it's a packing buffer */
+ atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
+ queue->next_buf_to_fill =
+ (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
+ return 1;
+ }
+ return 0;
+}
+
+static inline void
+qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
+{
+ int index;
+ int flush_cnt = 0;
+ int q_was_packing = 0;
+
+ /*
+ * check if weed have to switch to non-packing mode or if
+ * we have to get a pci flag out on the queue
+ */
+ if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
+ !atomic_read(&queue->set_pci_flags_count)){
+ if (atomic_swap(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
+ QETH_OUT_Q_UNLOCKED) {
+ /*
+ * If we get in here, there was no action in
+ * do_send_packet. So, we check if there is a
+ * packing buffer to be flushed here.
+ */
+ netif_stop_queue(queue->card->dev);
+ index = queue->next_buf_to_fill;
+ q_was_packing = queue->do_pack;
+ flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
+ if (!flush_cnt &&
+ !atomic_read(&queue->set_pci_flags_count))
+ flush_cnt +=
+ qeth_flush_buffers_on_no_pci(queue);
+#ifdef CONFIG_QETH_PERF_STATS
+ if (q_was_packing)
+ queue->card->perf_stats.bufs_sent_pack +=
+ flush_cnt;
+#endif
+ if (flush_cnt)
+ qeth_flush_buffers(queue, 1, index, flush_cnt);
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ }
+ }
+}
+
+static void
+qeth_qdio_output_handler(struct ccw_device * ccwdev, unsigned int status,
+ unsigned int qdio_error, unsigned int siga_error,
+ unsigned int __queue, int first_element, int count,
+ unsigned long card_ptr)
+{
+ struct qeth_card *card = (struct qeth_card *) card_ptr;
+ struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
+ struct qeth_qdio_out_buffer *buffer;
+ int i;
+
+ QETH_DBF_TEXT(trace, 6, "qdouhdl");
+ if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
+ if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
+ QETH_DBF_SPRINTF(trace, 2, "On device %s: "
+ "received active check "
+ "condition (0x%08x).",
+ CARD_BUS_ID(card), status);
+ QETH_DBF_TEXT(trace, 2, "chkcond");
+ QETH_DBF_TEXT_(trace, 2, "%08x", status);
+ netif_stop_queue(card->dev);
+ qeth_schedule_recovery(card);
+ return;
+ }
+ }
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.outbound_handler_cnt++;
+ card->perf_stats.outbound_handler_start_time = qeth_get_micros();
+#endif
+ for(i = first_element; i < (first_element + count); ++i){
+ buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
+ /*we only handle the KICK_IT error by doing a recovery */
+ if (qeth_handle_send_error(card, buffer, qdio_error, siga_error)
+ == QETH_SEND_ERROR_KICK_IT){
+ netif_stop_queue(card->dev);
+ qeth_schedule_recovery(card);
+ return;
+ }
+ qeth_clear_output_buffer(queue, buffer);
+ }
+ atomic_sub(count, &queue->used_buffers);
+ /* check if we need to do something on this outbound queue */
+ if (card->info.type != QETH_CARD_TYPE_IQD)
+ qeth_check_outbound_queue(queue);
+
+ netif_wake_queue(queue->card->dev);
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.outbound_handler_time += qeth_get_micros() -
+ card->perf_stats.outbound_handler_start_time;
+#endif
+}
+
+static void
+qeth_create_qib_param_field(struct qeth_card *card, char *param_field)
+{
+
+ param_field[0] = _ascebc['P'];
+ param_field[1] = _ascebc['C'];
+ param_field[2] = _ascebc['I'];
+ param_field[3] = _ascebc['T'];
+ *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
+ *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
+ *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
+}
+
+static void
+qeth_create_qib_param_field_blkt(struct qeth_card *card, char *param_field)
+{
+ param_field[16] = _ascebc['B'];
+ param_field[17] = _ascebc['L'];
+ param_field[18] = _ascebc['K'];
+ param_field[19] = _ascebc['T'];
+ *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
+ *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
+ *((unsigned int *) (¶m_field[28])) = card->info.blkt.inter_packet_jumbo;
+}
+
+static void
+qeth_initialize_working_pool_list(struct qeth_card *card)
+{
+ struct qeth_buffer_pool_entry *entry;
+
+ QETH_DBF_TEXT(trace,5,"inwrklst");
+
+ list_for_each_entry(entry,
+ &card->qdio.init_pool.entry_list, init_list) {
+ qeth_put_buffer_pool_entry(card,entry);
+ }
+}
+
+static void
+qeth_clear_working_pool_list(struct qeth_card *card)
+{
+ struct qeth_buffer_pool_entry *pool_entry, *tmp;
+
+ QETH_DBF_TEXT(trace,5,"clwrklst");
+ list_for_each_entry_safe(pool_entry, tmp,
+ &card->qdio.in_buf_pool.entry_list, list){
+ list_del(&pool_entry->list);
+ }
+}
+
+static void
+qeth_free_buffer_pool(struct qeth_card *card)
+{
+ struct qeth_buffer_pool_entry *pool_entry, *tmp;
+ int i=0;
+ QETH_DBF_TEXT(trace,5,"freepool");
+ list_for_each_entry_safe(pool_entry, tmp,
+ &card->qdio.init_pool.entry_list, init_list){
+ for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
+ free_page((unsigned long)pool_entry->elements[i]);
+ list_del(&pool_entry->init_list);
+ kfree(pool_entry);
+ }
+}
+
+static int
+qeth_alloc_buffer_pool(struct qeth_card *card)
+{
+ struct qeth_buffer_pool_entry *pool_entry;
+ void *ptr;
+ int i, j;
+
+ QETH_DBF_TEXT(trace,5,"alocpool");
+ for (i = 0; i < card->qdio.init_pool.buf_count; ++i){
+ pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
+ if (!pool_entry){
+ qeth_free_buffer_pool(card);
+ return -ENOMEM;
+ }
+ for(j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j){
+ ptr = (void *) __get_free_page(GFP_KERNEL);
+ if (!ptr) {
+ while (j > 0)
+ free_page((unsigned long)
+ pool_entry->elements[--j]);
+ kfree(pool_entry);
+ qeth_free_buffer_pool(card);
+ return -ENOMEM;
+ }
+ pool_entry->elements[j] = ptr;
+ }
+ list_add(&pool_entry->init_list,
+ &card->qdio.init_pool.entry_list);
+ }
+ return 0;
+}
+
+int
+qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
+{
+ QETH_DBF_TEXT(trace, 2, "realcbp");
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
+ qeth_clear_working_pool_list(card);
+ qeth_free_buffer_pool(card);
+ card->qdio.in_buf_pool.buf_count = bufcnt;
+ card->qdio.init_pool.buf_count = bufcnt;
+ return qeth_alloc_buffer_pool(card);
+}
+
+static int
+qeth_alloc_qdio_buffers(struct qeth_card *card)
+{
+ int i, j;
+
+ QETH_DBF_TEXT(setup, 2, "allcqdbf");
+
+ if (card->qdio.state == QETH_QDIO_ALLOCATED)
+ return 0;
+
+ card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q), GFP_KERNEL);
+ if (!card->qdio.in_q)
+ return - ENOMEM;
+ QETH_DBF_TEXT(setup, 2, "inq");
+ QETH_DBF_HEX(setup, 2, &card->qdio.in_q, sizeof(void *));
+ memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
+ /* give inbound qeth_qdio_buffers their qdio_buffers */
+ for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
+ card->qdio.in_q->bufs[i].buffer =
+ &card->qdio.in_q->qdio_bufs[i];
+ /* inbound buffer pool */
+ if (qeth_alloc_buffer_pool(card)){
+ kfree(card->qdio.in_q);
+ return -ENOMEM;
+ }
+ /* outbound */
+ card->qdio.out_qs =
+ kmalloc(card->qdio.no_out_queues *
+ sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
+ if (!card->qdio.out_qs){
+ qeth_free_buffer_pool(card);
+ return -ENOMEM;
+ }
+ for (i = 0; i < card->qdio.no_out_queues; ++i){
+ card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
+ GFP_KERNEL);
+ if (!card->qdio.out_qs[i]){
+ while (i > 0)
+ kfree(card->qdio.out_qs[--i]);
+ kfree(card->qdio.out_qs);
+ return -ENOMEM;
+ }
+ QETH_DBF_TEXT_(setup, 2, "outq %i", i);
+ QETH_DBF_HEX(setup, 2, &card->qdio.out_qs[i], sizeof(void *));
+ memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
+ card->qdio.out_qs[i]->queue_no = i;
+ /* give outbound qeth_qdio_buffers their qdio_buffers */
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
+ card->qdio.out_qs[i]->bufs[j].buffer =
+ &card->qdio.out_qs[i]->qdio_bufs[j];
+ skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
+ skb_list);
+ INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
+ }
+ }
+ card->qdio.state = QETH_QDIO_ALLOCATED;
+ return 0;
+}
+
+static void
+qeth_free_qdio_buffers(struct qeth_card *card)
+{
+ int i, j;
+
+ QETH_DBF_TEXT(trace, 2, "freeqdbf");
+ if (card->qdio.state == QETH_QDIO_UNINITIALIZED)
+ return;
+ kfree(card->qdio.in_q);
+ /* inbound buffer pool */
+ qeth_free_buffer_pool(card);
+ /* free outbound qdio_qs */
+ for (i = 0; i < card->qdio.no_out_queues; ++i){
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
+ qeth_clear_output_buffer(card->qdio.out_qs[i],
+ &card->qdio.out_qs[i]->bufs[j]);
+ kfree(card->qdio.out_qs[i]);
+ }
+ kfree(card->qdio.out_qs);
+ card->qdio.state = QETH_QDIO_UNINITIALIZED;
+}
+
+static void
+qeth_clear_qdio_buffers(struct qeth_card *card)
+{
+ int i, j;
+
+ QETH_DBF_TEXT(trace, 2, "clearqdbf");
+ /* clear outbound buffers to free skbs */
+ for (i = 0; i < card->qdio.no_out_queues; ++i)
+ if (card->qdio.out_qs[i]){
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
+ qeth_clear_output_buffer(card->qdio.out_qs[i],
+ &card->qdio.out_qs[i]->bufs[j]);
+ }
+}
+
+static void
+qeth_init_qdio_info(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(setup, 4, "intqdinf");
+ card->qdio.state = QETH_QDIO_UNINITIALIZED;
+ /* inbound */
+ card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
+ card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
+ card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
+ INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
+ INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
+ /* outbound */
+ card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
+ card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
+}
+
+static int
+qeth_init_qdio_queues(struct qeth_card *card)
+{
+ int i, j;
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "initqdqs");
+
+ /* inbound queue */
+ memset(card->qdio.in_q->qdio_bufs, 0,
+ QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
+ qeth_initialize_working_pool_list(card);
+ /*give only as many buffers to hardware as we have buffer pool entries*/
+ for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
+ qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
+ card->qdio.in_q->next_buf_to_init = card->qdio.in_buf_pool.buf_count - 1;
+ rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
+ card->qdio.in_buf_pool.buf_count - 1, NULL);
+ if (rc) {
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ return rc;
+ }
+ rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
+ if (rc) {
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ return rc;
+ }
+ /* outbound queue */
+ for (i = 0; i < card->qdio.no_out_queues; ++i){
+ memset(card->qdio.out_qs[i]->qdio_bufs, 0,
+ QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
+ qeth_clear_output_buffer(card->qdio.out_qs[i],
+ &card->qdio.out_qs[i]->bufs[j]);
+ }
+ card->qdio.out_qs[i]->card = card;
+ card->qdio.out_qs[i]->next_buf_to_fill = 0;
+ card->qdio.out_qs[i]->do_pack = 0;
+ atomic_set(&card->qdio.out_qs[i]->used_buffers,0);
+ atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
+ atomic_set(&card->qdio.out_qs[i]->state,
+ QETH_OUT_Q_UNLOCKED);
+ }
+ return 0;
+}
+
+static int
+qeth_qdio_establish(struct qeth_card *card)
+{
+ struct qdio_initialize init_data;
+ char *qib_param_field;
+ struct qdio_buffer **in_sbal_ptrs;
+ struct qdio_buffer **out_sbal_ptrs;
+ int i, j, k;
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "qdioest");
+
+ qib_param_field = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
+ GFP_KERNEL);
+ if (!qib_param_field)
+ return -ENOMEM;
+
+ memset(qib_param_field, 0, QDIO_MAX_BUFFERS_PER_Q * sizeof(char));
+
+ qeth_create_qib_param_field(card, qib_param_field);
+ qeth_create_qib_param_field_blkt(card, qib_param_field);
+
+ in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
+ GFP_KERNEL);
+ if (!in_sbal_ptrs) {
+ kfree(qib_param_field);
+ return -ENOMEM;
+ }
+ for(i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
+ in_sbal_ptrs[i] = (struct qdio_buffer *)
+ virt_to_phys(card->qdio.in_q->bufs[i].buffer);
+
+ out_sbal_ptrs =
+ kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
+ sizeof(void *), GFP_KERNEL);
+ if (!out_sbal_ptrs) {
+ kfree(in_sbal_ptrs);
+ kfree(qib_param_field);
+ return -ENOMEM;
+ }
+ for(i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
+ for(j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k){
+ out_sbal_ptrs[k] = (struct qdio_buffer *)
+ virt_to_phys(card->qdio.out_qs[i]->
+ bufs[j].buffer);
+ }
+
+ memset(&init_data, 0, sizeof(struct qdio_initialize));
+ init_data.cdev = CARD_DDEV(card);
+ init_data.q_format = qeth_get_qdio_q_format(card);
+ init_data.qib_param_field_format = 0;
+ init_data.qib_param_field = qib_param_field;
+ init_data.min_input_threshold = QETH_MIN_INPUT_THRESHOLD;
+ init_data.max_input_threshold = QETH_MAX_INPUT_THRESHOLD;
+ init_data.min_output_threshold = QETH_MIN_OUTPUT_THRESHOLD;
+ init_data.max_output_threshold = QETH_MAX_OUTPUT_THRESHOLD;
+ init_data.no_input_qs = 1;
+ init_data.no_output_qs = card->qdio.no_out_queues;
+ init_data.input_handler = (qdio_handler_t *)
+ qeth_qdio_input_handler;
+ init_data.output_handler = (qdio_handler_t *)
+ qeth_qdio_output_handler;
+ init_data.int_parm = (unsigned long) card;
+ init_data.flags = QDIO_INBOUND_0COPY_SBALS |
+ QDIO_OUTBOUND_0COPY_SBALS |
+ QDIO_USE_OUTBOUND_PCIS;
+ init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
+ init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
+
+ if (!(rc = qdio_initialize(&init_data)))
+ card->qdio.state = QETH_QDIO_ESTABLISHED;
+
+ kfree(out_sbal_ptrs);
+ kfree(in_sbal_ptrs);
+ kfree(qib_param_field);
+ return rc;
+}
+
+static int
+qeth_qdio_activate(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(setup,3,"qdioact");
+ return qdio_activate(CARD_DDEV(card), 0);
+}
+
+static int
+qeth_clear_channel(struct qeth_channel *channel)
+{
+ unsigned long flags;
+ struct qeth_card *card;
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"clearch");
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+
+ if (rc)
+ return rc;
+ rc = wait_event_interruptible_timeout(card->wait_q,
+ channel->state==CH_STATE_STOPPED, QETH_TIMEOUT);
+ if (rc == -ERESTARTSYS)
+ return rc;
+ if (channel->state != CH_STATE_STOPPED)
+ return -ETIME;
+ channel->state = CH_STATE_DOWN;
+ return 0;
+}
+
+static int
+qeth_halt_channel(struct qeth_channel *channel)
+{
+ unsigned long flags;
+ struct qeth_card *card;
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"haltch");
+ card = CARD_FROM_CDEV(channel->ccwdev);
+ spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
+ rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
+ spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
+
+ if (rc)
+ return rc;
+ rc = wait_event_interruptible_timeout(card->wait_q,
+ channel->state==CH_STATE_HALTED, QETH_TIMEOUT);
+ if (rc == -ERESTARTSYS)
+ return rc;
+ if (channel->state != CH_STATE_HALTED)
+ return -ETIME;
+ return 0;
+}
+
+static int
+qeth_halt_channels(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"haltchs");
+ if ((rc = qeth_halt_channel(&card->read)))
+ return rc;
+ if ((rc = qeth_halt_channel(&card->write)))
+ return rc;
+ return qeth_halt_channel(&card->data);
+}
+static int
+qeth_clear_channels(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"clearchs");
+ if ((rc = qeth_clear_channel(&card->read)))
+ return rc;
+ if ((rc = qeth_clear_channel(&card->write)))
+ return rc;
+ return qeth_clear_channel(&card->data);
+}
+
+static int
+qeth_clear_halt_card(struct qeth_card *card, int halt)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"clhacrd");
+ QETH_DBF_HEX(trace, 3, &card, sizeof(void *));
+
+ if (halt)
+ rc = qeth_halt_channels(card);
+ if (rc)
+ return rc;
+ return qeth_clear_channels(card);
+}
+
+static int
+qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"qdioclr");
+ if (card->qdio.state == QETH_QDIO_ESTABLISHED){
+ if ((rc = qdio_cleanup(CARD_DDEV(card),
+ (card->info.type == QETH_CARD_TYPE_IQD) ?
+ QDIO_FLAG_CLEANUP_USING_HALT :
+ QDIO_FLAG_CLEANUP_USING_CLEAR)))
+ QETH_DBF_TEXT_(trace, 3, "1err%d", rc);
+ card->qdio.state = QETH_QDIO_ALLOCATED;
+ }
+ if ((rc = qeth_clear_halt_card(card, use_halt)))
+ QETH_DBF_TEXT_(trace, 3, "2err%d", rc);
+ card->state = CARD_STATE_DOWN;
+ return rc;
+}
+
+static int
+qeth_dm_act(struct qeth_card *card)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(setup,2,"dmact");
+
+ iob = qeth_wait_for_buffer(&card->write);
+ memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
+
+ memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
+ &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
+ memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
+ &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
+ rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
+ return rc;
+}
+
+static int
+qeth_mpc_initialize(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(setup,2,"mpcinit");
+
+ if ((rc = qeth_issue_next_read(card))){
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ return rc;
+ }
+ if ((rc = qeth_cm_enable(card))){
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ return rc;
+ }
+ if ((rc = qeth_cm_setup(card))){
+ QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
+ return rc;
+ }
+ if ((rc = qeth_ulp_enable(card))){
+ QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
+ return rc;
+ }
+ if ((rc = qeth_ulp_setup(card))){
+ QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
+ return rc;
+ }
+ if ((rc = qeth_alloc_qdio_buffers(card))){
+ QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
+ return rc;
+ }
+ if ((rc = qeth_qdio_establish(card))){
+ QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
+ qeth_free_qdio_buffers(card);
+ goto out_qdio;
+ }
+ if ((rc = qeth_qdio_activate(card))){
+ QETH_DBF_TEXT_(setup, 2, "7err%d", rc);
+ goto out_qdio;
+ }
+ if ((rc = qeth_dm_act(card))){
+ QETH_DBF_TEXT_(setup, 2, "8err%d", rc);
+ goto out_qdio;
+ }
+
+ return 0;
+out_qdio:
+ qeth_qdio_clear_card(card, card->info.type==QETH_CARD_TYPE_OSAE);
+ return rc;
+}
+
+static struct net_device *
+qeth_get_netdevice(enum qeth_card_types type, enum qeth_link_types linktype)
+{
+ struct net_device *dev = NULL;
+
+ switch (type) {
+ case QETH_CARD_TYPE_OSAE:
+ switch (linktype) {
+ case QETH_LINK_TYPE_LANE_TR:
+ case QETH_LINK_TYPE_HSTR:
+#ifdef CONFIG_TR
+ dev = alloc_trdev(0);
+#endif /* CONFIG_TR */
+ break;
+ default:
+ dev = alloc_etherdev(0);
+ }
+ break;
+ case QETH_CARD_TYPE_IQD:
+ dev = alloc_netdev(0, "hsi%d", ether_setup);
+ break;
+ default:
+ dev = alloc_etherdev(0);
+ }
+ return dev;
+}
+
+/*hard_header fake function; used in case fake_ll is set */
+static int
+qeth_fake_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, void *daddr, void *saddr,
+ unsigned len)
+{
+ struct ethhdr *hdr;
+
+ hdr = (struct ethhdr *)skb_push(skb, QETH_FAKE_LL_LEN);
+ memcpy(hdr->h_source, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr->h_dest, "FAKELL", ETH_ALEN);
+ if (type != ETH_P_802_3)
+ hdr->h_proto = htons(type);
+ else
+ hdr->h_proto = htons(len);
+ return QETH_FAKE_LL_LEN;
+}
+
+static inline int
+qeth_send_packet(struct qeth_card *, struct sk_buff *);
+
+static int
+qeth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ int rc;
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace, 6, "hrdstxmi");
+ card = (struct qeth_card *)dev->priv;
+ if (skb==NULL) {
+ card->stats.tx_dropped++;
+ card->stats.tx_errors++;
+ /* return OK; otherwise ksoftirqd goes to 100% */
+ return NETDEV_TX_OK;
+ }
+ if ((card->state != CARD_STATE_UP) || !card->lan_online) {
+ card->stats.tx_dropped++;
+ card->stats.tx_errors++;
+ card->stats.tx_carrier_errors++;
+ dev_kfree_skb_any(skb);
+ /* return OK; otherwise ksoftirqd goes to 100% */
+ return NETDEV_TX_OK;
+ }
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.outbound_cnt++;
+ card->perf_stats.outbound_start_time = qeth_get_micros();
+#endif
+ netif_stop_queue(dev);
+ if ((rc = qeth_send_packet(card, skb))) {
+ if (rc == -EBUSY) {
+ return NETDEV_TX_BUSY;
+ } else {
+ card->stats.tx_errors++;
+ card->stats.tx_dropped++;
+ dev_kfree_skb_any(skb);
+ /*set to OK; otherwise ksoftirqd goes to 100% */
+ rc = NETDEV_TX_OK;
+ }
+ }
+ netif_wake_queue(dev);
+#ifdef CONFIG_QETH_PERF_STATS
+ card->perf_stats.outbound_time += qeth_get_micros() -
+ card->perf_stats.outbound_start_time;
+#endif
+ return rc;
+}
+
+static int
+qeth_verify_vlan_dev(struct net_device *dev, struct qeth_card *card)
+{
+ int rc = 0;
+#ifdef CONFIG_QETH_VLAN
+ struct vlan_group *vg;
+ int i;
+
+ if (!(vg = card->vlangrp))
+ return rc;
+
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++){
+ if (vg->vlan_devices[i] == dev){
+ rc = QETH_VLAN_CARD;
+ break;
+ }
+ }
+#endif
+ return rc;
+}
+
+static int
+qeth_verify_dev(struct net_device *dev)
+{
+ struct qeth_card *card;
+ unsigned long flags;
+ int rc = 0;
+
+ read_lock_irqsave(&qeth_card_list.rwlock, flags);
+ list_for_each_entry(card, &qeth_card_list.list, list){
+ if (card->dev == dev){
+ rc = QETH_REAL_CARD;
+ break;
+ }
+ rc = qeth_verify_vlan_dev(dev, card);
+ if (rc)
+ break;
+ }
+ read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
+
+ return rc;
+}
+
+static struct qeth_card *
+qeth_get_card_from_dev(struct net_device *dev)
+{
+ struct qeth_card *card = NULL;
+ int rc;
+
+ rc = qeth_verify_dev(dev);
+ if (rc == QETH_REAL_CARD)
+ card = (struct qeth_card *)dev->priv;
+ else if (rc == QETH_VLAN_CARD)
+ card = (struct qeth_card *)
+ VLAN_DEV_INFO(dev)->real_dev->priv;
+
+ QETH_DBF_TEXT_(trace, 4, "%d", rc);
+ return card ;
+}
+
+static void
+qeth_tx_timeout(struct net_device *dev)
+{
+ struct qeth_card *card;
+
+ card = (struct qeth_card *) dev->priv;
+ card->stats.tx_errors++;
+ qeth_schedule_recovery(card);
+}
+
+static int
+qeth_open(struct net_device *dev)
+{
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace, 4, "qethopen");
+
+ card = (struct qeth_card *) dev->priv;
+
+ if (card->state != CARD_STATE_SOFTSETUP)
+ return -ENODEV;
+
+ if ( (card->options.layer2) &&
+ (!card->info.layer2_mac_registered)) {
+ QETH_DBF_TEXT(trace,4,"nomacadr");
+ return -EPERM;
+ }
+ card->dev->flags |= IFF_UP;
+ netif_start_queue(dev);
+ card->data.state = CH_STATE_UP;
+ card->state = CARD_STATE_UP;
+
+ if (!card->lan_online){
+ if (netif_carrier_ok(dev))
+ netif_carrier_off(dev);
+ }
+ return 0;
+}
+
+static int
+qeth_stop(struct net_device *dev)
+{
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace, 4, "qethstop");
+
+ card = (struct qeth_card *) dev->priv;
+
+ netif_stop_queue(dev);
+ card->dev->flags &= ~IFF_UP;
+ if (card->state == CARD_STATE_UP)
+ card->state = CARD_STATE_SOFTSETUP;
+ return 0;
+}
+
+static inline int
+qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
+{
+ int cast_type = RTN_UNSPEC;
+
+ if (skb->dst && skb->dst->neighbour){
+ cast_type = skb->dst->neighbour->type;
+ if ((cast_type == RTN_BROADCAST) ||
+ (cast_type == RTN_MULTICAST) ||
+ (cast_type == RTN_ANYCAST))
+ return cast_type;
+ else
+ return RTN_UNSPEC;
+ }
+ /* try something else */
+ if (skb->protocol == ETH_P_IPV6)
+ return (skb->nh.raw[24] == 0xff) ? RTN_MULTICAST : 0;
+ else if (skb->protocol == ETH_P_IP)
+ return ((skb->nh.raw[16] & 0xf0) == 0xe0) ? RTN_MULTICAST : 0;
+ /* ... */
+ if (!memcmp(skb->data, skb->dev->broadcast, 6))
+ return RTN_BROADCAST;
+ else {
+ u16 hdr_mac;
+
+ hdr_mac = *((u16 *)skb->data);
+ /* tr multicast? */
+ switch (card->info.link_type) {
+ case QETH_LINK_TYPE_HSTR:
+ case QETH_LINK_TYPE_LANE_TR:
+ if ((hdr_mac == QETH_TR_MAC_NC) ||
+ (hdr_mac == QETH_TR_MAC_C))
+ return RTN_MULTICAST;
+ /* eth or so multicast? */
+ default:
+ if ((hdr_mac == QETH_ETH_MAC_V4) ||
+ (hdr_mac == QETH_ETH_MAC_V6))
+ return RTN_MULTICAST;
+ }
+ }
+ return cast_type;
+}
+
+static inline int
+qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
+ int ipv, int cast_type)
+{
+ if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
+ return card->qdio.default_out_queue;
+ switch (card->qdio.no_out_queues) {
+ case 4:
+ if (cast_type && card->info.is_multicast_different)
+ return card->info.is_multicast_different &
+ (card->qdio.no_out_queues - 1);
+ if (card->qdio.do_prio_queueing && (ipv == 4)) {
+ if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_TOS){
+ if (skb->nh.iph->tos & IP_TOS_NOTIMPORTANT)
+ return 3;
+ if (skb->nh.iph->tos & IP_TOS_HIGHRELIABILITY)
+ return 2;
+ if (skb->nh.iph->tos & IP_TOS_HIGHTHROUGHPUT)
+ return 1;
+ if (skb->nh.iph->tos & IP_TOS_LOWDELAY)
+ return 0;
+ }
+ if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_PREC)
+ return 3 - (skb->nh.iph->tos >> 6);
+ } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
+ /* TODO: IPv6!!! */
+ }
+ return card->qdio.default_out_queue;
+ case 1: /* fallthrough for single-out-queue 1920-device */
+ default:
+ return card->qdio.default_out_queue;
+ }
+}
+
+static inline int
+qeth_get_ip_version(struct sk_buff *skb)
+{
+ switch (skb->protocol) {
+ case ETH_P_IPV6:
+ return 6;
+ case ETH_P_IP:
+ return 4;
+ default:
+ return 0;
+ }
+}
+
+static inline int
+qeth_prepare_skb(struct qeth_card *card, struct sk_buff **skb,
+ struct qeth_hdr **hdr, int ipv)
+{
+ int rc = 0;
+#ifdef CONFIG_QETH_VLAN
+ u16 *tag;
+#endif
+
+ QETH_DBF_TEXT(trace, 6, "prepskb");
+
+ rc = qeth_realloc_headroom(card, skb, sizeof(struct qeth_hdr));
+ if (rc)
+ return rc;
+#ifdef CONFIG_QETH_VLAN
+ if (card->vlangrp && vlan_tx_tag_present(*skb) &&
+ ((ipv == 6) || card->options.layer2) ) {
+ /*
+ * Move the mac addresses (6 bytes src, 6 bytes dest)
+ * to the beginning of the new header. We are using three
+ * memcpys instead of one memmove to save cycles.
+ */
+ skb_push(*skb, VLAN_HLEN);
+ memcpy((*skb)->data, (*skb)->data + 4, 4);
+ memcpy((*skb)->data + 4, (*skb)->data + 8, 4);
+ memcpy((*skb)->data + 8, (*skb)->data + 12, 4);
+ tag = (u16 *)((*skb)->data + 12);
+ /*
+ * first two bytes = ETH_P_8021Q (0x8100)
+ * second two bytes = VLANID
+ */
+ *tag = __constant_htons(ETH_P_8021Q);
+ *(tag + 1) = htons(vlan_tx_tag_get(*skb));
+ }
+#endif
+ *hdr = (struct qeth_hdr *)
+ qeth_push_skb(card, skb, sizeof(struct qeth_hdr));
+ if (hdr == NULL)
+ return -EINVAL;
+ return 0;
+}
+
+static inline u8
+qeth_get_qeth_hdr_flags4(int cast_type)
+{
+ if (cast_type == RTN_MULTICAST)
+ return QETH_CAST_MULTICAST;
+ if (cast_type == RTN_BROADCAST)
+ return QETH_CAST_BROADCAST;
+ return QETH_CAST_UNICAST;
+}
+
+static inline u8
+qeth_get_qeth_hdr_flags6(int cast_type)
+{
+ u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
+ if (cast_type == RTN_MULTICAST)
+ return ct | QETH_CAST_MULTICAST;
+ if (cast_type == RTN_ANYCAST)
+ return ct | QETH_CAST_ANYCAST;
+ if (cast_type == RTN_BROADCAST)
+ return ct | QETH_CAST_BROADCAST;
+ return ct | QETH_CAST_UNICAST;
+}
+
+static inline void
+qeth_layer2_get_packet_type(struct qeth_card *card, struct qeth_hdr *hdr,
+ struct sk_buff *skb)
+{
+ __u16 hdr_mac;
+
+ if (!memcmp(skb->data+QETH_HEADER_SIZE,
+ skb->dev->broadcast,6)) { /* broadcast? */
+ *(__u32 *)hdr->hdr.l2.flags |=
+ QETH_LAYER2_FLAG_BROADCAST << 8;
+ return;
+ }
+ hdr_mac=*((__u16*)skb->data);
+ /* tr multicast? */
+ switch (card->info.link_type) {
+ case QETH_LINK_TYPE_HSTR:
+ case QETH_LINK_TYPE_LANE_TR:
+ if ((hdr_mac == QETH_TR_MAC_NC) ||
+ (hdr_mac == QETH_TR_MAC_C) )
+ *(__u32 *)hdr->hdr.l2.flags |=
+ QETH_LAYER2_FLAG_MULTICAST << 8;
+ else
+ *(__u32 *)hdr->hdr.l2.flags |=
+ QETH_LAYER2_FLAG_UNICAST << 8;
+ break;
+ /* eth or so multicast? */
+ default:
+ if ( (hdr_mac==QETH_ETH_MAC_V4) ||
+ (hdr_mac==QETH_ETH_MAC_V6) )
+ *(__u32 *)hdr->hdr.l2.flags |=
+ QETH_LAYER2_FLAG_MULTICAST << 8;
+ else
+ *(__u32 *)hdr->hdr.l2.flags |=
+ QETH_LAYER2_FLAG_UNICAST << 8;
+ }
+}
+
+static inline void
+qeth_layer2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
+ struct sk_buff *skb, int cast_type)
+{
+ memset(hdr, 0, sizeof(struct qeth_hdr));
+ hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
+
+ /* set byte 0 to "0x02" and byte 3 to casting flags */
+ if (cast_type==RTN_MULTICAST)
+ *(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_MULTICAST << 8;
+ else if (cast_type==RTN_BROADCAST)
+ *(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_BROADCAST << 8;
+ else
+ qeth_layer2_get_packet_type(card, hdr, skb);
+
+ hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
+#ifdef CONFIG_QETH_VLAN
+ /* VSWITCH relies on the VLAN
+ * information to be present in
+ * the QDIO header */
+ if ((card->vlangrp != NULL) &&
+ vlan_tx_tag_present(skb)) {
+ *(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_VLAN << 8;
+ hdr->hdr.l2.vlan_id = vlan_tx_tag_get(skb);
+ }
+#endif
+}
+
+void
+qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
+ struct sk_buff *skb, int ipv, int cast_type)
+{
+ QETH_DBF_TEXT(trace, 6, "fillhdr");
+
+ memset(hdr, 0, sizeof(struct qeth_hdr));
+ if (card->options.layer2) {
+ qeth_layer2_fill_header(card, hdr, skb, cast_type);
+ return;
+ }
+ hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+ hdr->hdr.l3.ext_flags = 0;
+#ifdef CONFIG_QETH_VLAN
+ /*
+ * before we're going to overwrite this location with next hop ip.
+ * v6 uses passthrough, v4 sets the tag in the QDIO header.
+ */
+ if (card->vlangrp && vlan_tx_tag_present(skb)) {
+ hdr->hdr.l3.ext_flags = (ipv == 4) ?
+ QETH_HDR_EXT_VLAN_FRAME :
+ QETH_HDR_EXT_INCLUDE_VLAN_TAG;
+ hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
+ }
+#endif /* CONFIG_QETH_VLAN */
+ hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
+ if (ipv == 4) { /* IPv4 */
+ hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags4(cast_type);
+ memset(hdr->hdr.l3.dest_addr, 0, 12);
+ if ((skb->dst) && (skb->dst->neighbour)) {
+ *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
+ *((u32 *) skb->dst->neighbour->primary_key);
+ } else {
+ /* fill in destination address used in ip header */
+ *((u32 *) (&hdr->hdr.l3.dest_addr[12])) = skb->nh.iph->daddr;
+ }
+ } else if (ipv == 6) { /* IPv6 or passthru */
+ hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags6(cast_type);
+ if ((skb->dst) && (skb->dst->neighbour)) {
+ memcpy(hdr->hdr.l3.dest_addr,
+ skb->dst->neighbour->primary_key, 16);
+ } else {
+ /* fill in destination address used in ip header */
+ memcpy(hdr->hdr.l3.dest_addr, &skb->nh.ipv6h->daddr, 16);
+ }
+ } else { /* passthrough */
+ if (!memcmp(skb->data + sizeof(struct qeth_hdr),
+ skb->dev->broadcast, 6)) { /* broadcast? */
+ hdr->hdr.l3.flags = QETH_CAST_BROADCAST | QETH_HDR_PASSTHRU;
+ } else {
+ hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
+ QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
+ QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
+ }
+ }
+}
+
+static inline void
+__qeth_fill_buffer_frag(struct sk_buff *skb, struct qdio_buffer *buffer,
+ int *next_element_to_fill)
+{
+ int length = skb->len;
+ struct skb_frag_struct *frag;
+ int fragno;
+ unsigned long addr;
+ int element;
+ int first_lap = 1;
+
+ fragno = skb_shinfo(skb)->nr_frags; /* start with last frag */
+ element = *next_element_to_fill + fragno;
+ while (length > 0) {
+ if (fragno > 0) {
+ frag = &skb_shinfo(skb)->frags[fragno - 1];
+ addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
+ frag->page_offset;
+ buffer->element[element].addr = (char *)addr;
+ buffer->element[element].length = frag->size;
+ length -= frag->size;
+ if (first_lap)
+ buffer->element[element].flags =
+ SBAL_FLAGS_LAST_FRAG;
+ else
+ buffer->element[element].flags =
+ SBAL_FLAGS_MIDDLE_FRAG;
+ } else {
+ buffer->element[element].addr = skb->data;
+ buffer->element[element].length = length;
+ length = 0;
+ buffer->element[element].flags =
+ SBAL_FLAGS_FIRST_FRAG;
+ }
+ element--;
+ fragno--;
+ first_lap = 0;
+ }
+ *next_element_to_fill += skb_shinfo(skb)->nr_frags + 1;
+}
+
+static inline void
+__qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
+ int *next_element_to_fill)
+{
+ int length = skb->len;
+ int length_here;
+ int element;
+ char *data;
+ int first_lap = 1;
+
+ element = *next_element_to_fill;
+ data = skb->data;
+ while (length > 0) {
+ /* length_here is the remaining amount of data in this page */
+ length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
+ if (length < length_here)
+ length_here = length;
+ buffer->element[element].addr = data;
+ buffer->element[element].length = length_here;
+ length -= length_here;
+ if (!length){
+ if (first_lap)
+ buffer->element[element].flags = 0;
+ else
+ buffer->element[element].flags =
+ SBAL_FLAGS_LAST_FRAG;
+ } else {
+ if (first_lap)
+ buffer->element[element].flags =
+ SBAL_FLAGS_FIRST_FRAG;
+ else
+ buffer->element[element].flags =
+ SBAL_FLAGS_MIDDLE_FRAG;
+ }
+ data += length_here;
+ element++;
+ first_lap = 0;
+ }
+ *next_element_to_fill = element;
+}
+
+static inline int
+qeth_fill_buffer(struct qeth_qdio_out_q *queue,
+ struct qeth_qdio_out_buffer *buf,
+ struct sk_buff *skb)
+{
+ struct qdio_buffer *buffer;
+ int flush_cnt = 0;
+
+ QETH_DBF_TEXT(trace, 6, "qdfillbf");
+ buffer = buf->buffer;
+ atomic_inc(&skb->users);
+ skb_queue_tail(&buf->skb_list, skb);
+ if (skb_shinfo(skb)->nr_frags == 0)
+ __qeth_fill_buffer(skb, buffer,
+ (int *)&buf->next_element_to_fill);
+ else
+ __qeth_fill_buffer_frag(skb, buffer,
+ (int *)&buf->next_element_to_fill);
+
+ if (!queue->do_pack) {
+ QETH_DBF_TEXT(trace, 6, "fillbfnp");
+ /* set state to PRIMED -> will be flushed */
+ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
+ flush_cnt = 1;
+ } else {
+ QETH_DBF_TEXT(trace, 6, "fillbfpa");
+#ifdef CONFIG_QETH_PERF_STATS
+ queue->card->perf_stats.skbs_sent_pack++;
+#endif
+ if (buf->next_element_to_fill >=
+ QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
+ /*
+ * packed buffer if full -> set state PRIMED
+ * -> will be flushed
+ */
+ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
+ flush_cnt = 1;
+ }
+ }
+ return flush_cnt;
+}
+
+static inline int
+qeth_do_send_packet_fast(struct qeth_card *card, struct qeth_qdio_out_q *queue,
+ struct sk_buff *skb, struct qeth_hdr *hdr,
+ int elements_needed,
+ struct qeth_eddp_context *ctx)
+{
+ struct qeth_qdio_out_buffer *buffer;
+ int buffers_needed = 0;
+ int flush_cnt = 0;
+ int index;
+
+ QETH_DBF_TEXT(trace, 6, "dosndpfa");
+
+ /* spin until we get the queue ... */
+ while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED,
+ QETH_OUT_Q_LOCKED,
+ &queue->state));
+ /* ... now we've got the queue */
+ index = queue->next_buf_to_fill;
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ /*
+ * check if buffer is empty to make sure that we do not 'overtake'
+ * ourselves and try to fill a buffer that is already primed
+ */
+ if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
+ card->stats.tx_dropped++;
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ return -EBUSY;
+ }
+ if (ctx == NULL)
+ queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ else {
+ buffers_needed = qeth_eddp_check_buffers_for_context(queue,ctx);
+ if (buffers_needed < 0) {
+ card->stats.tx_dropped++;
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ return -EBUSY;
+ }
+ queue->next_buf_to_fill =
+ (queue->next_buf_to_fill + buffers_needed) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ }
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ if (ctx == NULL) {
+ qeth_fill_buffer(queue, buffer, skb);
+ qeth_flush_buffers(queue, 0, index, 1);
+ } else {
+ flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
+ WARN_ON(buffers_needed != flush_cnt);
+ qeth_flush_buffers(queue, 0, index, flush_cnt);
+ }
+ return 0;
+}
+
+static inline int
+qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
+ struct sk_buff *skb, struct qeth_hdr *hdr,
+ int elements_needed, struct qeth_eddp_context *ctx)
+{
+ struct qeth_qdio_out_buffer *buffer;
+ int start_index;
+ int flush_count = 0;
+ int do_pack = 0;
+ int tmp;
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace, 6, "dosndpkt");
+
+ /* spin until we get the queue ... */
+ while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED,
+ QETH_OUT_Q_LOCKED,
+ &queue->state));
+ start_index = queue->next_buf_to_fill;
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ /*
+ * check if buffer is empty to make sure that we do not 'overtake'
+ * ourselves and try to fill a buffer that is already primed
+ */
+ if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY){
+ card->stats.tx_dropped++;
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ return -EBUSY;
+ }
+ /* check if we need to switch packing state of this queue */
+ qeth_switch_to_packing_if_needed(queue);
+ if (queue->do_pack){
+ do_pack = 1;
+ if (ctx == NULL) {
+ /* does packet fit in current buffer? */
+ if((QETH_MAX_BUFFER_ELEMENTS(card) -
+ buffer->next_element_to_fill) < elements_needed){
+ /* ... no -> set state PRIMED */
+ atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
+ flush_count++;
+ queue->next_buf_to_fill =
+ (queue->next_buf_to_fill + 1) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ /* we did a step forward, so check buffer state
+ * again */
+ if (atomic_read(&buffer->state) !=
+ QETH_QDIO_BUF_EMPTY){
+ card->stats.tx_dropped++;
+ qeth_flush_buffers(queue, 0, start_index, flush_count);
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ return -EBUSY;
+ }
+ }
+ } else {
+ /* check if we have enough elements (including following
+ * free buffers) to handle eddp context */
+ if (qeth_eddp_check_buffers_for_context(queue,ctx) < 0){
+ printk("eddp tx_dropped 1\n");
+ card->stats.tx_dropped++;
+ rc = -EBUSY;
+ goto out;
+ }
+ }
+ }
+ if (ctx == NULL)
+ tmp = qeth_fill_buffer(queue, buffer, skb);
+ else {
+ tmp = qeth_eddp_fill_buffer(queue,ctx,queue->next_buf_to_fill);
+ if (tmp < 0) {
+ printk("eddp tx_dropped 2\n");
+ card->stats.tx_dropped++;
+ rc = - EBUSY;
+ goto out;
+ }
+ }
+ queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ flush_count += tmp;
+out:
+ if (flush_count)
+ qeth_flush_buffers(queue, 0, start_index, flush_count);
+ /*
+ * queue->state will go from LOCKED -> UNLOCKED or from
+ * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
+ * (switch packing state or flush buffer to get another pci flag out).
+ * In that case we will enter this loop
+ */
+ while (atomic_dec_return(&queue->state)){
+ flush_count = 0;
+ start_index = queue->next_buf_to_fill;
+ /* check if we can go back to non-packing state */
+ flush_count += qeth_switch_to_nonpacking_if_needed(queue);
+ /*
+ * check if we need to flush a packing buffer to get a pci
+ * flag out on the queue
+ */
+ if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
+ flush_count += qeth_flush_buffers_on_no_pci(queue);
+ if (flush_count)
+ qeth_flush_buffers(queue, 0, start_index, flush_count);
+ }
+ /* at this point the queue is UNLOCKED again */
+#ifdef CONFIG_QETH_PERF_STATS
+ if (do_pack)
+ queue->card->perf_stats.bufs_sent_pack += flush_count;
+#endif /* CONFIG_QETH_PERF_STATS */
+
+ return rc;
+}
+
+static inline int
+qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
+{
+ int ipv = 0;
+ int cast_type;
+ struct qeth_qdio_out_q *queue;
+ struct qeth_hdr *hdr;
+ int elements_needed = 0;
+ enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
+ struct qeth_eddp_context *ctx = NULL;
+ int rc;
+
+ QETH_DBF_TEXT(trace, 6, "sendpkt");
+
+ if (!card->options.layer2) {
+ ipv = qeth_get_ip_version(skb);
+ if ((card->dev->hard_header == qeth_fake_header) && ipv) {
+ if ((skb = qeth_pskb_unshare(skb,GFP_ATOMIC)) == NULL) {
+ card->stats.tx_dropped++;
+ dev_kfree_skb_irq(skb);
+ return 0;
+ }
+ skb_pull(skb, QETH_FAKE_LL_LEN);
+ }
+ }
+ cast_type = qeth_get_cast_type(card, skb);
+ if ((cast_type == RTN_BROADCAST) && (card->info.broadcast_capable == 0)){
+ card->stats.tx_dropped++;
+ card->stats.tx_errors++;
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ queue = card->qdio.out_qs
+ [qeth_get_priority_queue(card, skb, ipv, cast_type)];
+
+ if (skb_shinfo(skb)->tso_size)
+ large_send = card->options.large_send;
+
+ if ((rc = qeth_prepare_skb(card, &skb, &hdr, ipv))){
+ QETH_DBF_TEXT_(trace, 4, "pskbe%d", rc);
+ return rc;
+ }
+ /*are we able to do TSO ? If so ,prepare and send it from here */
+ if ((large_send == QETH_LARGE_SEND_TSO) &&
+ (cast_type == RTN_UNSPEC)) {
+ rc = qeth_tso_send_packet(card, skb, queue,
+ ipv, cast_type);
+ goto do_statistics;
+ }
+
+ qeth_fill_header(card, hdr, skb, ipv, cast_type);
+ if (large_send == QETH_LARGE_SEND_EDDP) {
+ ctx = qeth_eddp_create_context(card, skb, hdr);
+ if (ctx == NULL) {
+ PRINT_WARN("could not create eddp context\n");
+ return -EINVAL;
+ }
+ } else {
+ elements_needed = qeth_get_elements_no(card,(void*) hdr, skb);
+ if (!elements_needed)
+ return -EINVAL;
+ }
+
+ if (card->info.type != QETH_CARD_TYPE_IQD)
+ rc = qeth_do_send_packet(card, queue, skb, hdr,
+ elements_needed, ctx);
+ else
+ rc = qeth_do_send_packet_fast(card, queue, skb, hdr,
+ elements_needed, ctx);
+do_statistics:
+ if (!rc){
+ card->stats.tx_packets++;
+ card->stats.tx_bytes += skb->len;
+#ifdef CONFIG_QETH_PERF_STATS
+ if (skb_shinfo(skb)->tso_size) {
+ card->perf_stats.large_send_bytes += skb->len;
+ card->perf_stats.large_send_cnt++;
+ }
+ if (skb_shinfo(skb)->nr_frags > 0){
+ card->perf_stats.sg_skbs_sent++;
+ /* nr_frags + skb->data */
+ card->perf_stats.sg_frags_sent +=
+ skb_shinfo(skb)->nr_frags + 1;
+ }
+#endif /* CONFIG_QETH_PERF_STATS */
+ }
+ if (ctx != NULL) {
+ /* drop creator's reference */
+ qeth_eddp_put_context(ctx);
+ /* free skb; it's not referenced by a buffer */
+ if (rc == 0)
+ dev_kfree_skb_any(skb);
+
+ }
+ return rc;
+}
+
+static int
+qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
+{
+ struct qeth_card *card = (struct qeth_card *) dev->priv;
+ int rc = 0;
+
+ switch(regnum){
+ case MII_BMCR: /* Basic mode control register */
+ rc = BMCR_FULLDPLX;
+ if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH)&&
+ (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
+ rc |= BMCR_SPEED100;
+ break;
+ case MII_BMSR: /* Basic mode status register */
+ rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
+ BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
+ BMSR_100BASE4;
+ break;
+ case MII_PHYSID1: /* PHYS ID 1 */
+ rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
+ dev->dev_addr[2];
+ rc = (rc >> 5) & 0xFFFF;
+ break;
+ case MII_PHYSID2: /* PHYS ID 2 */
+ rc = (dev->dev_addr[2] << 10) & 0xFFFF;
+ break;
+ case MII_ADVERTISE: /* Advertisement control reg */
+ rc = ADVERTISE_ALL;
+ break;
+ case MII_LPA: /* Link partner ability reg */
+ rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
+ LPA_100BASE4 | LPA_LPACK;
+ break;
+ case MII_EXPANSION: /* Expansion register */
+ break;
+ case MII_DCOUNTER: /* disconnect counter */
+ break;
+ case MII_FCSCOUNTER: /* false carrier counter */
+ break;
+ case MII_NWAYTEST: /* N-way auto-neg test register */
+ break;
+ case MII_RERRCOUNTER: /* rx error counter */
+ rc = card->stats.rx_errors;
+ break;
+ case MII_SREVISION: /* silicon revision */
+ break;
+ case MII_RESV1: /* reserved 1 */
+ break;
+ case MII_LBRERROR: /* loopback, rx, bypass error */
+ break;
+ case MII_PHYADDR: /* physical address */
+ break;
+ case MII_RESV2: /* reserved 2 */
+ break;
+ case MII_TPISTATUS: /* TPI status for 10mbps */
+ break;
+ case MII_NCONFIG: /* network interface config */
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+ return rc;
+}
+
+static void
+qeth_mdio_write(struct net_device *dev, int phy_id, int regnum, int value)
+{
+ switch(regnum){
+ case MII_BMCR: /* Basic mode control register */
+ case MII_BMSR: /* Basic mode status register */
+ case MII_PHYSID1: /* PHYS ID 1 */
+ case MII_PHYSID2: /* PHYS ID 2 */
+ case MII_ADVERTISE: /* Advertisement control reg */
+ case MII_LPA: /* Link partner ability reg */
+ case MII_EXPANSION: /* Expansion register */
+ case MII_DCOUNTER: /* disconnect counter */
+ case MII_FCSCOUNTER: /* false carrier counter */
+ case MII_NWAYTEST: /* N-way auto-neg test register */
+ case MII_RERRCOUNTER: /* rx error counter */
+ case MII_SREVISION: /* silicon revision */
+ case MII_RESV1: /* reserved 1 */
+ case MII_LBRERROR: /* loopback, rx, bypass error */
+ case MII_PHYADDR: /* physical address */
+ case MII_RESV2: /* reserved 2 */
+ case MII_TPISTATUS: /* TPI status for 10mbps */
+ case MII_NCONFIG: /* network interface config */
+ default:
+ break;
+ }
+}
+
+static inline const char *
+qeth_arp_get_error_cause(int *rc)
+{
+ switch (*rc) {
+ case QETH_IPA_ARP_RC_FAILED:
+ *rc = -EIO;
+ return "operation failed";
+ case QETH_IPA_ARP_RC_NOTSUPP:
+ *rc = -EOPNOTSUPP;
+ return "operation not supported";
+ case QETH_IPA_ARP_RC_OUT_OF_RANGE:
+ *rc = -EINVAL;
+ return "argument out of range";
+ case QETH_IPA_ARP_RC_Q_NOTSUPP:
+ *rc = -EOPNOTSUPP;
+ return "query operation not supported";
+ case QETH_IPA_ARP_RC_Q_NO_DATA:
+ *rc = -ENOENT;
+ return "no query data available";
+ default:
+ return "unknown error";
+ }
+}
+
+static int
+qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
+ __u16, long);
+
+static int
+qeth_arp_set_no_entries(struct qeth_card *card, int no_entries)
+{
+ int tmp;
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"arpstnoe");
+
+ /* TODO: really not supported by GuestLAN? */
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
+ PRINT_WARN("ARP processing not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+ rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
+ no_entries);
+ if (rc) {
+ tmp = rc;
+ PRINT_WARN("Could not set number of ARP entries on %s: "
+ "%s (0x%x/%d)\n",
+ QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
+ tmp, tmp);
+ }
+ return rc;
+}
+
+static inline void
+qeth_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
+ struct qeth_arp_query_data *qdata,
+ int entry_size, int uentry_size)
+{
+ char *entry_ptr;
+ char *uentry_ptr;
+ int i;
+
+ entry_ptr = (char *)&qdata->data;
+ uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
+ for (i = 0; i < qdata->no_entries; ++i){
+ /* strip off 32 bytes "media specific information" */
+ memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
+ entry_ptr += entry_size;
+ uentry_ptr += uentry_size;
+ }
+}
+
+static int
+qeth_arp_query_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_arp_query_data *qdata;
+ struct qeth_arp_query_info *qinfo;
+ int entry_size;
+ int uentry_size;
+ int i;
+
+ QETH_DBF_TEXT(trace,4,"arpquecb");
+
+ qinfo = (struct qeth_arp_query_info *) reply->param;
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code) {
+ QETH_DBF_TEXT_(trace,4,"qaer1%i", cmd->hdr.return_code);
+ return 0;
+ }
+ if (cmd->data.setassparms.hdr.return_code) {
+ cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
+ QETH_DBF_TEXT_(trace,4,"qaer2%i", cmd->hdr.return_code);
+ return 0;
+ }
+ qdata = &cmd->data.setassparms.data.query_arp;
+ switch(qdata->reply_bits){
+ case 5:
+ uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
+ if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
+ uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
+ break;
+ case 7:
+ /* fall through to default */
+ default:
+ /* tr is the same as eth -> entry7 */
+ uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
+ if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
+ uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
+ break;
+ }
+ /* check if there is enough room in userspace */
+ if ((qinfo->udata_len - qinfo->udata_offset) <
+ qdata->no_entries * uentry_size){
+ QETH_DBF_TEXT_(trace, 4, "qaer3%i", -ENOMEM);
+ cmd->hdr.return_code = -ENOMEM;
+ PRINT_WARN("query ARP user space buffer is too small for "
+ "the returned number of ARP entries. "
+ "Aborting query!\n");
+ goto out_error;
+ }
+ QETH_DBF_TEXT_(trace, 4, "anore%i",
+ cmd->data.setassparms.hdr.number_of_replies);
+ QETH_DBF_TEXT_(trace, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
+ QETH_DBF_TEXT_(trace, 4, "anoen%i", qdata->no_entries);
+
+ if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
+ /* strip off "media specific information" */
+ qeth_copy_arp_entries_stripped(qinfo, qdata, entry_size,
+ uentry_size);
+ } else
+ /*copy entries to user buffer*/
+ memcpy(qinfo->udata + qinfo->udata_offset,
+ (char *)&qdata->data, qdata->no_entries*uentry_size);
+
+ qinfo->no_entries += qdata->no_entries;
+ qinfo->udata_offset += (qdata->no_entries*uentry_size);
+ /* check if all replies received ... */
+ if (cmd->data.setassparms.hdr.seq_no <
+ cmd->data.setassparms.hdr.number_of_replies)
+ return 1;
+ memcpy(qinfo->udata, &qinfo->no_entries, 4);
+ /* keep STRIP_ENTRIES flag so the user program can distinguish
+ * stripped entries from normal ones */
+ if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
+ qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
+ memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET,&qdata->reply_bits,2);
+ return 0;
+out_error:
+ i = 0;
+ memcpy(qinfo->udata, &i, 4);
+ return 0;
+}
+
+static int
+qeth_send_ipa_arp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
+ int len, int (*reply_cb)(struct qeth_card *,
+ struct qeth_reply *,
+ unsigned long),
+ void *reply_param)
+{
+ QETH_DBF_TEXT(trace,4,"sendarp");
+
+ memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
+ memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
+ &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
+ return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
+ reply_cb, reply_param);
+}
+
+static int
+qeth_send_ipa_snmp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
+ int len, int (*reply_cb)(struct qeth_card *,
+ struct qeth_reply *,
+ unsigned long),
+ void *reply_param)
+{
+ u16 s1, s2;
+
+ QETH_DBF_TEXT(trace,4,"sendsnmp");
+
+ memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
+ memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
+ &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
+ /* adjust PDU length fields in IPA_PDU_HEADER */
+ s1 = (u32) IPA_PDU_HEADER_SIZE + len;
+ s2 = (u32) len;
+ memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
+ memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
+ memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
+ memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
+ return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
+ reply_cb, reply_param);
+}
+
+static struct qeth_cmd_buffer *
+qeth_get_setassparms_cmd(struct qeth_card *, enum qeth_ipa_funcs,
+ __u16, __u16, enum qeth_prot_versions);
+static int
+qeth_arp_query(struct qeth_card *card, char *udata)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_arp_query_info qinfo = {0, };
+ int tmp;
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"arpquery");
+
+ /*
+ * currently GuestLAN does only deliver all zeros on query arp,
+ * even though arp processing is supported (according to IPA supp.
+ * funcs flags); since all zeros is no valueable information,
+ * we say EOPNOTSUPP for all ARP functions
+ */
+ /*if (card->info.guestlan)
+ return -EOPNOTSUPP; */
+ if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
+ IPA_ARP_PROCESSING)) {
+ PRINT_WARN("ARP processing not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+ /* get size of userspace buffer and mask_bits -> 6 bytes */
+ if (copy_from_user(&qinfo, udata, 6))
+ return -EFAULT;
+ if (!(qinfo.udata = kmalloc(qinfo.udata_len, GFP_KERNEL)))
+ return -ENOMEM;
+ memset(qinfo.udata, 0, qinfo.udata_len);
+ qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
+ iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_QUERY_INFO,
+ sizeof(int),QETH_PROT_IPV4);
+
+ rc = qeth_send_ipa_arp_cmd(card, iob,
+ QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
+ qeth_arp_query_cb, (void *)&qinfo);
+ if (rc) {
+ tmp = rc;
+ PRINT_WARN("Error while querying ARP cache on %s: %s "
+ "(0x%x/%d)\n",
+ QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
+ tmp, tmp);
+ copy_to_user(udata, qinfo.udata, 4);
+ } else {
+ copy_to_user(udata, qinfo.udata, qinfo.udata_len);
+ }
+ kfree(qinfo.udata);
+ return rc;
+}
+
+/**
+ * SNMP command callback
+ */
+static int
+qeth_snmp_command_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long sdata)
+{
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_arp_query_info *qinfo;
+ struct qeth_snmp_cmd *snmp;
+ unsigned char *data;
+ __u16 data_len;
+
+ QETH_DBF_TEXT(trace,3,"snpcmdcb");
+
+ cmd = (struct qeth_ipa_cmd *) sdata;
+ data = (unsigned char *)((char *)cmd - reply->offset);
+ qinfo = (struct qeth_arp_query_info *) reply->param;
+ snmp = &cmd->data.setadapterparms.data.snmp;
+
+ if (cmd->hdr.return_code) {
+ QETH_DBF_TEXT_(trace,4,"scer1%i", cmd->hdr.return_code);
+ return 0;
+ }
+ if (cmd->data.setadapterparms.hdr.return_code) {
+ cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
+ QETH_DBF_TEXT_(trace,4,"scer2%i", cmd->hdr.return_code);
+ return 0;
+ }
+ data_len = *((__u16*)QETH_IPA_PDU_LEN_PDU1(data));
+ if (cmd->data.setadapterparms.hdr.seq_no == 1)
+ data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
+ else
+ data_len -= (__u16)((char*)&snmp->request - (char *)cmd);
+
+ /* check if there is enough room in userspace */
+ if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
+ QETH_DBF_TEXT_(trace, 4, "scer3%i", -ENOMEM);
+ cmd->hdr.return_code = -ENOMEM;
+ return 0;
+ }
+ QETH_DBF_TEXT_(trace, 4, "snore%i",
+ cmd->data.setadapterparms.hdr.used_total);
+ QETH_DBF_TEXT_(trace, 4, "sseqn%i", cmd->data.setadapterparms.hdr.seq_no);
+ /*copy entries to user buffer*/
+ if (cmd->data.setadapterparms.hdr.seq_no == 1) {
+ memcpy(qinfo->udata + qinfo->udata_offset,
+ (char *)snmp,
+ data_len + offsetof(struct qeth_snmp_cmd,data));
+ qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
+ } else {
+ memcpy(qinfo->udata + qinfo->udata_offset,
+ (char *)&snmp->request, data_len);
+ }
+ qinfo->udata_offset += data_len;
+ /* check if all replies received ... */
+ QETH_DBF_TEXT_(trace, 4, "srtot%i",
+ cmd->data.setadapterparms.hdr.used_total);
+ QETH_DBF_TEXT_(trace, 4, "srseq%i",
+ cmd->data.setadapterparms.hdr.seq_no);
+ if (cmd->data.setadapterparms.hdr.seq_no <
+ cmd->data.setadapterparms.hdr.used_total)
+ return 1;
+ return 0;
+}
+
+static struct qeth_cmd_buffer *
+qeth_get_ipacmd_buffer(struct qeth_card *, enum qeth_ipa_cmds,
+ enum qeth_prot_versions );
+
+static struct qeth_cmd_buffer *
+qeth_get_adapter_cmd(struct qeth_card *card, __u32 command, __u32 cmdlen)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETADAPTERPARMS,
+ QETH_PROT_IPV4);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
+ cmd->data.setadapterparms.hdr.command_code = command;
+ cmd->data.setadapterparms.hdr.used_total = 1;
+ cmd->data.setadapterparms.hdr.seq_no = 1;
+
+ return iob;
+}
+
+/**
+ * function to send SNMP commands to OSA-E card
+ */
+static int
+qeth_snmp_command(struct qeth_card *card, char *udata)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_snmp_ureq *ureq;
+ int req_len;
+ struct qeth_arp_query_info qinfo = {0, };
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"snmpcmd");
+
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+
+ if ((!qeth_adp_supported(card,IPA_SETADP_SET_SNMP_CONTROL)) &&
+ (!card->options.layer2) ) {
+ PRINT_WARN("SNMP Query MIBS not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+ /* skip 4 bytes (data_len struct member) to get req_len */
+ if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
+ return -EFAULT;
+ ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
+ if (!ureq) {
+ QETH_DBF_TEXT(trace, 2, "snmpnome");
+ return -ENOMEM;
+ }
+ if (copy_from_user(ureq, udata,
+ req_len+sizeof(struct qeth_snmp_ureq_hdr))){
+ kfree(ureq);
+ return -EFAULT;
+ }
+ qinfo.udata_len = ureq->hdr.data_len;
+ if (!(qinfo.udata = kmalloc(qinfo.udata_len, GFP_KERNEL))){
+ kfree(ureq);
+ return -ENOMEM;
+ }
+ memset(qinfo.udata, 0, qinfo.udata_len);
+ qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
+
+ iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
+ QETH_SNMP_SETADP_CMDLENGTH + req_len);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
+ rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
+ qeth_snmp_command_cb, (void *)&qinfo);
+ if (rc)
+ PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
+ QETH_CARD_IFNAME(card), rc);
+ else
+ copy_to_user(udata, qinfo.udata, qinfo.udata_len);
+
+ kfree(ureq);
+ kfree(qinfo.udata);
+ return rc;
+}
+
+static int
+qeth_default_setassparms_cb(struct qeth_card *, struct qeth_reply *,
+ unsigned long);
+
+static int
+qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *,
+ __u16, long,
+ int (*reply_cb)
+ (struct qeth_card *, struct qeth_reply *, unsigned long),
+ void *reply_param);
+
+static int
+qeth_arp_add_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
+{
+ struct qeth_cmd_buffer *iob;
+ char buf[16];
+ int tmp;
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"arpadent");
+
+ /*
+ * currently GuestLAN does only deliver all zeros on query arp,
+ * even though arp processing is supported (according to IPA supp.
+ * funcs flags); since all zeros is no valueable information,
+ * we say EOPNOTSUPP for all ARP functions
+ */
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
+ PRINT_WARN("ARP processing not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_ADD_ENTRY,
+ sizeof(struct qeth_arp_cache_entry),
+ QETH_PROT_IPV4);
+ rc = qeth_send_setassparms(card, iob,
+ sizeof(struct qeth_arp_cache_entry),
+ (unsigned long) entry,
+ qeth_default_setassparms_cb, NULL);
+ if (rc) {
+ tmp = rc;
+ qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
+ PRINT_WARN("Could not add ARP entry for address %s on %s: "
+ "%s (0x%x/%d)\n",
+ buf, QETH_CARD_IFNAME(card),
+ qeth_arp_get_error_cause(&rc), tmp, tmp);
+ }
+ return rc;
+}
+
+static int
+qeth_arp_remove_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
+{
+ struct qeth_cmd_buffer *iob;
+ char buf[16] = {0, };
+ int tmp;
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"arprment");
+
+ /*
+ * currently GuestLAN does only deliver all zeros on query arp,
+ * even though arp processing is supported (according to IPA supp.
+ * funcs flags); since all zeros is no valueable information,
+ * we say EOPNOTSUPP for all ARP functions
+ */
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
+ PRINT_WARN("ARP processing not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+ memcpy(buf, entry, 12);
+ iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_REMOVE_ENTRY,
+ 12,
+ QETH_PROT_IPV4);
+ rc = qeth_send_setassparms(card, iob,
+ 12, (unsigned long)buf,
+ qeth_default_setassparms_cb, NULL);
+ if (rc) {
+ tmp = rc;
+ memset(buf, 0, 16);
+ qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
+ PRINT_WARN("Could not delete ARP entry for address %s on %s: "
+ "%s (0x%x/%d)\n",
+ buf, QETH_CARD_IFNAME(card),
+ qeth_arp_get_error_cause(&rc), tmp, tmp);
+ }
+ return rc;
+}
+
+static int
+qeth_arp_flush_cache(struct qeth_card *card)
+{
+ int rc;
+ int tmp;
+
+ QETH_DBF_TEXT(trace,3,"arpflush");
+
+ /*
+ * currently GuestLAN does only deliver all zeros on query arp,
+ * even though arp processing is supported (according to IPA supp.
+ * funcs flags); since all zeros is no valueable information,
+ * we say EOPNOTSUPP for all ARP functions
+ */
+ if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
+ PRINT_WARN("ARP processing not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+ rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
+ if (rc){
+ tmp = rc;
+ PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n",
+ QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
+ tmp, tmp);
+ }
+ return rc;
+}
+
+static int
+qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+ struct qeth_arp_cache_entry arp_entry;
+ struct mii_ioctl_data *mii_data;
+ int rc = 0;
+
+ if (!card)
+ return -ENODEV;
+
+ if ((card->state != CARD_STATE_UP) &&
+ (card->state != CARD_STATE_SOFTSETUP))
+ return -ENODEV;
+
+ switch (cmd){
+ case SIOC_QETH_ARP_SET_NO_ENTRIES:
+ if ( !capable(CAP_NET_ADMIN) ||
+ (card->options.layer2) ) {
+ rc = -EPERM;
+ break;
+ }
+ rc = qeth_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
+ break;
+ case SIOC_QETH_ARP_QUERY_INFO:
+ if ( !capable(CAP_NET_ADMIN) ||
+ (card->options.layer2) ) {
+ rc = -EPERM;
+ break;
+ }
+ rc = qeth_arp_query(card, rq->ifr_ifru.ifru_data);
+ break;
+ case SIOC_QETH_ARP_ADD_ENTRY:
+ if ( !capable(CAP_NET_ADMIN) ||
+ (card->options.layer2) ) {
+ rc = -EPERM;
+ break;
+ }
+ if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
+ sizeof(struct qeth_arp_cache_entry)))
+ rc = -EFAULT;
+ else
+ rc = qeth_arp_add_entry(card, &arp_entry);
+ break;
+ case SIOC_QETH_ARP_REMOVE_ENTRY:
+ if ( !capable(CAP_NET_ADMIN) ||
+ (card->options.layer2) ) {
+ rc = -EPERM;
+ break;
+ }
+ if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
+ sizeof(struct qeth_arp_cache_entry)))
+ rc = -EFAULT;
+ else
+ rc = qeth_arp_remove_entry(card, &arp_entry);
+ break;
+ case SIOC_QETH_ARP_FLUSH_CACHE:
+ if ( !capable(CAP_NET_ADMIN) ||
+ (card->options.layer2) ) {
+ rc = -EPERM;
+ break;
+ }
+ rc = qeth_arp_flush_cache(card);
+ break;
+ case SIOC_QETH_ADP_SET_SNMP_CONTROL:
+ rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
+ break;
+ case SIOC_QETH_GET_CARD_TYPE:
+ if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
+ !card->info.guestlan)
+ return 1;
+ return 0;
+ break;
+ case SIOCGMIIPHY:
+ mii_data = if_mii(rq);
+ mii_data->phy_id = 0;
+ break;
+ case SIOCGMIIREG:
+ mii_data = if_mii(rq);
+ if (mii_data->phy_id != 0)
+ rc = -EINVAL;
+ else
+ mii_data->val_out = qeth_mdio_read(dev,mii_data->phy_id,
+ mii_data->reg_num);
+ break;
+ case SIOCSMIIREG:
+ rc = -EOPNOTSUPP;
+ break;
+ /* TODO: remove return if qeth_mdio_write does something */
+ if (!capable(CAP_NET_ADMIN)){
+ rc = -EPERM;
+ break;
+ }
+ mii_data = if_mii(rq);
+ if (mii_data->phy_id != 0)
+ rc = -EINVAL;
+ else
+ qeth_mdio_write(dev, mii_data->phy_id, mii_data->reg_num,
+ mii_data->val_in);
+ break;
+ default:
+ rc = -EOPNOTSUPP;
+ }
+ if (rc)
+ QETH_DBF_TEXT_(trace, 2, "ioce%d", rc);
+ return rc;
+}
+
+static struct net_device_stats *
+qeth_get_stats(struct net_device *dev)
+{
+ struct qeth_card *card;
+
+ card = (struct qeth_card *) (dev->priv);
+
+ QETH_DBF_TEXT(trace,5,"getstat");
+
+ return &card->stats;
+}
+
+static int
+qeth_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct qeth_card *card;
+ char dbf_text[15];
+
+ card = (struct qeth_card *) (dev->priv);
+
+ QETH_DBF_TEXT(trace,4,"chgmtu");
+ sprintf(dbf_text, "%8x", new_mtu);
+ QETH_DBF_TEXT(trace,4,dbf_text);
+
+ if (new_mtu < 64)
+ return -EINVAL;
+ if (new_mtu > 65535)
+ return -EINVAL;
+ if ((!qeth_is_supported(card,IPA_IP_FRAGMENTATION)) &&
+ (!qeth_mtu_is_valid(card, new_mtu)))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+#ifdef CONFIG_QETH_VLAN
+static void
+qeth_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+{
+ struct qeth_card *card;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace,4,"vlanreg");
+
+ card = (struct qeth_card *) dev->priv;
+ spin_lock_irqsave(&card->vlanlock, flags);
+ card->vlangrp = grp;
+ spin_unlock_irqrestore(&card->vlanlock, flags);
+}
+
+static inline void
+qeth_free_vlan_buffer(struct qeth_card *card, struct qeth_qdio_out_buffer *buf,
+ unsigned short vid)
+{
+ int i;
+ struct sk_buff *skb;
+ struct sk_buff_head tmp_list;
+
+ skb_queue_head_init(&tmp_list);
+ for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
+ while ((skb = skb_dequeue(&buf->skb_list))){
+ if (vlan_tx_tag_present(skb) &&
+ (vlan_tx_tag_get(skb) == vid)) {
+ atomic_dec(&skb->users);
+ dev_kfree_skb(skb);
+ } else
+ skb_queue_tail(&tmp_list, skb);
+ }
+ }
+ while ((skb = skb_dequeue(&tmp_list)))
+ skb_queue_tail(&buf->skb_list, skb);
+}
+
+static void
+qeth_free_vlan_skbs(struct qeth_card *card, unsigned short vid)
+{
+ int i, j;
+
+ QETH_DBF_TEXT(trace, 4, "frvlskbs");
+ for (i = 0; i < card->qdio.no_out_queues; ++i){
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
+ qeth_free_vlan_buffer(card, &card->qdio.
+ out_qs[i]->bufs[j], vid);
+ }
+}
+
+static void
+qeth_free_vlan_addresses4(struct qeth_card *card, unsigned short vid)
+{
+ struct in_device *in_dev;
+ struct in_ifaddr *ifa;
+ struct qeth_ipaddr *addr;
+
+ QETH_DBF_TEXT(trace, 4, "frvaddr4");
+ if (!card->vlangrp)
+ return;
+ rcu_read_lock();
+ in_dev = __in_dev_get(card->vlangrp->vlan_devices[vid]);
+ if (!in_dev)
+ goto out;
+ for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
+ addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
+ if (addr){
+ addr->u.a4.addr = ifa->ifa_address;
+ addr->u.a4.mask = ifa->ifa_mask;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ if (!qeth_delete_ip(card, addr))
+ kfree(addr);
+ }
+ }
+out:
+ rcu_read_unlock();
+}
+
+static void
+qeth_free_vlan_addresses6(struct qeth_card *card, unsigned short vid)
+{
+#ifdef CONFIG_QETH_IPV6
+ struct inet6_dev *in6_dev;
+ struct inet6_ifaddr *ifa;
+ struct qeth_ipaddr *addr;
+
+ QETH_DBF_TEXT(trace, 4, "frvaddr6");
+ if (!card->vlangrp)
+ return;
+ in6_dev = in6_dev_get(card->vlangrp->vlan_devices[vid]);
+ if (!in6_dev)
+ return;
+ for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next){
+ addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
+ if (addr){
+ memcpy(&addr->u.a6.addr, &ifa->addr,
+ sizeof(struct in6_addr));
+ addr->u.a6.pfxlen = ifa->prefix_len;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ if (!qeth_delete_ip(card, addr))
+ kfree(addr);
+ }
+ }
+ in6_dev_put(in6_dev);
+#endif /* CONFIG_QETH_IPV6 */
+}
+
+static void
+qeth_layer2_send_setdelvlan(struct qeth_card *card, __u16 i,
+ enum qeth_ipa_cmds ipacmd)
+{
+ int rc;
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT_(trace, 4, "L2sdv%x",ipacmd);
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setdelvlan.vlan_id = i;
+
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+ if (rc) {
+ PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
+ "Continuing\n",i, QETH_CARD_IFNAME(card), rc);
+ QETH_DBF_TEXT_(trace, 2, "L2VL%4x", ipacmd);
+ QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
+ QETH_DBF_TEXT_(trace, 2, "err%d", rc);
+ }
+}
+
+static void
+qeth_layer2_process_vlans(struct qeth_card *card, int clear)
+{
+ unsigned short i;
+
+ QETH_DBF_TEXT(trace, 3, "L2prcvln");
+
+ if (!card->vlangrp)
+ return;
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ if (card->vlangrp->vlan_devices[i] == NULL)
+ continue;
+ if (clear)
+ qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
+ else
+ qeth_layer2_send_setdelvlan(card, i, IPA_CMD_SETVLAN);
+ }
+}
+
+/*add_vid is layer 2 used only ....*/
+static void
+qeth_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT_(trace, 4, "aid:%d", vid);
+
+ card = (struct qeth_card *) dev->priv;
+ if (!card->options.layer2)
+ return;
+ qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
+}
+
+/*... kill_vid used for both modes*/
+static void
+qeth_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+ struct qeth_card *card;
+ unsigned long flags;
+
+ QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);
+
+ card = (struct qeth_card *) dev->priv;
+ /* free all skbs for the vlan device */
+ qeth_free_vlan_skbs(card, vid);
+ spin_lock_irqsave(&card->vlanlock, flags);
+ /* unregister IP addresses of vlan device */
+ qeth_free_vlan_addresses4(card, vid);
+ qeth_free_vlan_addresses6(card, vid);
+ if (card->vlangrp)
+ card->vlangrp->vlan_devices[vid] = NULL;
+ spin_unlock_irqrestore(&card->vlanlock, flags);
+ if (card->options.layer2)
+ qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
+ qeth_set_multicast_list(card->dev);
+}
+#endif
+
+/**
+ * set multicast address on card
+ */
+static void
+qeth_set_multicast_list(struct net_device *dev)
+{
+ struct qeth_card *card = (struct qeth_card *) dev->priv;
+
+ QETH_DBF_TEXT(trace,3,"setmulti");
+ qeth_delete_mc_addresses(card);
+ qeth_add_multicast_ipv4(card);
+#ifdef CONFIG_QETH_IPV6
+ qeth_add_multicast_ipv6(card);
+#endif
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+}
+
+static int
+qeth_neigh_setup(struct net_device *dev, struct neigh_parms *np)
+{
+ return 0;
+}
+
+static void
+qeth_get_mac_for_ipm(__u32 ipm, char *mac, struct net_device *dev)
+{
+ if (dev->type == ARPHRD_IEEE802_TR)
+ ip_tr_mc_map(ipm, mac);
+ else
+ ip_eth_mc_map(ipm, mac);
+}
+
+static struct qeth_ipaddr *
+qeth_get_addr_buffer(enum qeth_prot_versions prot)
+{
+ struct qeth_ipaddr *addr;
+
+ addr = kmalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
+ if (addr == NULL) {
+ PRINT_WARN("Not enough memory to add address\n");
+ return NULL;
+ }
+ memset(addr,0,sizeof(struct qeth_ipaddr));
+ addr->type = QETH_IP_TYPE_NORMAL;
+ addr->proto = prot;
+ return addr;
+}
+
+static void
+qeth_delete_mc_addresses(struct qeth_card *card)
+{
+ struct qeth_ipaddr *iptodo;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace,4,"delmc");
+ iptodo = qeth_get_addr_buffer(QETH_PROT_IPV4);
+ if (!iptodo) {
+ QETH_DBF_TEXT(trace, 2, "dmcnomem");
+ return;
+ }
+ iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (!__qeth_insert_ip_todo(card, iptodo, 0))
+ kfree(iptodo);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+static inline void
+qeth_add_mc(struct qeth_card *card, struct in_device *in4_dev)
+{
+ struct qeth_ipaddr *ipm;
+ struct ip_mc_list *im4;
+ char buf[MAX_ADDR_LEN];
+
+ QETH_DBF_TEXT(trace,4,"addmc");
+ for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
+ qeth_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
+ ipm = qeth_get_addr_buffer(QETH_PROT_IPV4);
+ if (!ipm)
+ continue;
+ ipm->u.a4.addr = im4->multiaddr;
+ memcpy(ipm->mac,buf,OSA_ADDR_LEN);
+ ipm->is_multicast = 1;
+ if (!qeth_add_ip(card,ipm))
+ kfree(ipm);
+ }
+}
+
+static inline void
+qeth_add_vlan_mc(struct qeth_card *card)
+{
+#ifdef CONFIG_QETH_VLAN
+ struct in_device *in_dev;
+ struct vlan_group *vg;
+ int i;
+
+ QETH_DBF_TEXT(trace,4,"addmcvl");
+ if ( ((card->options.layer2 == 0) &&
+ (!qeth_is_supported(card,IPA_FULL_VLAN))) ||
+ (card->vlangrp == NULL) )
+ return ;
+
+ vg = card->vlangrp;
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ if (vg->vlan_devices[i] == NULL ||
+ !(vg->vlan_devices[i]->flags & IFF_UP))
+ continue;
+ in_dev = in_dev_get(vg->vlan_devices[i]);
+ if (!in_dev)
+ continue;
+ read_lock(&in_dev->mc_list_lock);
+ qeth_add_mc(card,in_dev);
+ read_unlock(&in_dev->mc_list_lock);
+ in_dev_put(in_dev);
+ }
+#endif
+}
+
+static void
+qeth_add_multicast_ipv4(struct qeth_card *card)
+{
+ struct in_device *in4_dev;
+
+ QETH_DBF_TEXT(trace,4,"chkmcv4");
+ in4_dev = in_dev_get(card->dev);
+ if (in4_dev == NULL)
+ return;
+ read_lock(&in4_dev->mc_list_lock);
+ qeth_add_mc(card, in4_dev);
+ qeth_add_vlan_mc(card);
+ read_unlock(&in4_dev->mc_list_lock);
+ in_dev_put(in4_dev);
+}
+
+#ifdef CONFIG_QETH_IPV6
+static inline void
+qeth_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
+{
+ struct qeth_ipaddr *ipm;
+ struct ifmcaddr6 *im6;
+ char buf[MAX_ADDR_LEN];
+
+ QETH_DBF_TEXT(trace,4,"addmc6");
+ for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
+ ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
+ ipm = qeth_get_addr_buffer(QETH_PROT_IPV6);
+ if (!ipm)
+ continue;
+ ipm->is_multicast = 1;
+ memcpy(ipm->mac,buf,OSA_ADDR_LEN);
+ memcpy(&ipm->u.a6.addr,&im6->mca_addr.s6_addr,
+ sizeof(struct in6_addr));
+ if (!qeth_add_ip(card,ipm))
+ kfree(ipm);
+ }
+}
+
+static inline void
+qeth_add_vlan_mc6(struct qeth_card *card)
+{
+#ifdef CONFIG_QETH_VLAN
+ struct inet6_dev *in_dev;
+ struct vlan_group *vg;
+ int i;
+
+ QETH_DBF_TEXT(trace,4,"admc6vl");
+ if ( ((card->options.layer2 == 0) &&
+ (!qeth_is_supported(card,IPA_FULL_VLAN))) ||
+ (card->vlangrp == NULL))
+ return ;
+
+ vg = card->vlangrp;
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ if (vg->vlan_devices[i] == NULL ||
+ !(vg->vlan_devices[i]->flags & IFF_UP))
+ continue;
+ in_dev = in6_dev_get(vg->vlan_devices[i]);
+ if (!in_dev)
+ continue;
+ read_lock(&in_dev->lock);
+ qeth_add_mc6(card,in_dev);
+ read_unlock(&in_dev->lock);
+ in6_dev_put(in_dev);
+ }
+#endif /* CONFIG_QETH_VLAN */
+}
+
+static void
+qeth_add_multicast_ipv6(struct qeth_card *card)
+{
+ struct inet6_dev *in6_dev;
+
+ QETH_DBF_TEXT(trace,4,"chkmcv6");
+ if ((card->options.layer2 == 0) &&
+ (!qeth_is_supported(card, IPA_IPV6)) )
+ return ;
+
+ in6_dev = in6_dev_get(card->dev);
+ if (in6_dev == NULL)
+ return;
+ read_lock(&in6_dev->lock);
+ qeth_add_mc6(card, in6_dev);
+ qeth_add_vlan_mc6(card);
+ read_unlock(&in6_dev->lock);
+ in6_dev_put(in6_dev);
+}
+#endif /* CONFIG_QETH_IPV6 */
+
+static int
+qeth_layer2_send_setdelmac(struct qeth_card *card, __u8 *mac,
+ enum qeth_ipa_cmds ipacmd,
+ int (*reply_cb) (struct qeth_card *,
+ struct qeth_reply*,
+ unsigned long))
+{
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(trace, 2, "L2sdmac");
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
+ memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
+ return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
+}
+
+static int
+qeth_layer2_send_setgroupmac_cb(struct qeth_card *card,
+ struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ __u8 *mac;
+
+ QETH_DBF_TEXT(trace, 2, "L2Sgmacb");
+ cmd = (struct qeth_ipa_cmd *) data;
+ mac = &cmd->data.setdelmac.mac[0];
+ /* MAC already registered, needed in couple/uncouple case */
+ if (cmd->hdr.return_code == 0x2005) {
+ PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \
+ "already existing on %s \n",
+ mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
+ QETH_CARD_IFNAME(card));
+ cmd->hdr.return_code = 0;
+ }
+ if (cmd->hdr.return_code)
+ PRINT_ERR("Could not set group MAC " \
+ "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
+ mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
+ QETH_CARD_IFNAME(card),cmd->hdr.return_code);
+ return 0;
+}
+
+static int
+qeth_layer2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
+{
+ QETH_DBF_TEXT(trace, 2, "L2Sgmac");
+ return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
+ qeth_layer2_send_setgroupmac_cb);
+}
+
+static int
+qeth_layer2_send_delgroupmac_cb(struct qeth_card *card,
+ struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ __u8 *mac;
+
+ QETH_DBF_TEXT(trace, 2, "L2Dgmacb");
+ cmd = (struct qeth_ipa_cmd *) data;
+ mac = &cmd->data.setdelmac.mac[0];
+ if (cmd->hdr.return_code)
+ PRINT_ERR("Could not delete group MAC " \
+ "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
+ mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
+ QETH_CARD_IFNAME(card), cmd->hdr.return_code);
+ return 0;
+}
+
+static int
+qeth_layer2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
+{
+ QETH_DBF_TEXT(trace, 2, "L2Dgmac");
+ return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
+ qeth_layer2_send_delgroupmac_cb);
+}
+
+static int
+qeth_layer2_send_setmac_cb(struct qeth_card *card,
+ struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace, 2, "L2Smaccb");
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code) {
+ QETH_DBF_TEXT_(trace, 2, "L2er%x", cmd->hdr.return_code);
+ PRINT_WARN("Error in registering MAC address on " \
+ "device %s: x%x\n", CARD_BUS_ID(card),
+ cmd->hdr.return_code);
+ card->info.layer2_mac_registered = 0;
+ cmd->hdr.return_code = -EIO;
+ } else {
+ card->info.layer2_mac_registered = 1;
+ memcpy(card->dev->dev_addr,cmd->data.setdelmac.mac,
+ OSA_ADDR_LEN);
+ PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
+ "successfully registered on device %s\n",
+ card->dev->dev_addr[0], card->dev->dev_addr[1],
+ card->dev->dev_addr[2], card->dev->dev_addr[3],
+ card->dev->dev_addr[4], card->dev->dev_addr[5],
+ card->dev->name);
+ }
+ return 0;
+}
+
+static int
+qeth_layer2_send_setmac(struct qeth_card *card, __u8 *mac)
+{
+ QETH_DBF_TEXT(trace, 2, "L2Setmac");
+ return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
+ qeth_layer2_send_setmac_cb);
+}
+
+static int
+qeth_layer2_send_delmac_cb(struct qeth_card *card,
+ struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace, 2, "L2Dmaccb");
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code) {
+ PRINT_WARN("Error in deregistering MAC address on " \
+ "device %s: x%x\n", CARD_BUS_ID(card),
+ cmd->hdr.return_code);
+ QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
+ cmd->hdr.return_code = -EIO;
+ return 0;
+ }
+ card->info.layer2_mac_registered = 0;
+
+ return 0;
+}
+static int
+qeth_layer2_send_delmac(struct qeth_card *card, __u8 *mac)
+{
+ QETH_DBF_TEXT(trace, 2, "L2Delmac");
+ if (!card->info.layer2_mac_registered)
+ return 0;
+ return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
+ qeth_layer2_send_delmac_cb);
+}
+
+static int
+qeth_layer2_set_mac_address(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+ struct qeth_card *card;
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace, 3, "setmac");
+
+ if (qeth_verify_dev(dev) != QETH_REAL_CARD) {
+ QETH_DBF_TEXT(trace, 3, "setmcINV");
+ return -EOPNOTSUPP;
+ }
+ card = (struct qeth_card *) dev->priv;
+
+ if (!card->options.layer2) {
+ PRINT_WARN("Setting MAC address on %s is not supported"
+ "in Layer 3 mode.\n", dev->name);
+ QETH_DBF_TEXT(trace, 3, "setmcLY3");
+ return -EOPNOTSUPP;
+ }
+ QETH_DBF_TEXT_(trace, 3, "%s", CARD_BUS_ID(card));
+ QETH_DBF_HEX(trace, 3, addr->sa_data, OSA_ADDR_LEN);
+ rc = qeth_layer2_send_delmac(card, &card->dev->dev_addr[0]);
+ if (!rc)
+ rc = qeth_layer2_send_setmac(card, addr->sa_data);
+ return rc;
+}
+
+static void
+qeth_fill_ipacmd_header(struct qeth_card *card, struct qeth_ipa_cmd *cmd,
+ __u8 command, enum qeth_prot_versions prot)
+{
+ memset(cmd, 0, sizeof (struct qeth_ipa_cmd));
+ cmd->hdr.command = command;
+ cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
+ cmd->hdr.seqno = card->seqno.ipa;
+ cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
+ cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
+ if (card->options.layer2)
+ cmd->hdr.prim_version_no = 2;
+ else
+ cmd->hdr.prim_version_no = 1;
+ cmd->hdr.param_count = 1;
+ cmd->hdr.prot_version = prot;
+ cmd->hdr.ipa_supported = 0;
+ cmd->hdr.ipa_enabled = 0;
+}
+
+static struct qeth_cmd_buffer *
+qeth_get_ipacmd_buffer(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
+ enum qeth_prot_versions prot)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ iob = qeth_wait_for_buffer(&card->write);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
+
+ return iob;
+}
+
+static int
+qeth_send_setdelmc(struct qeth_card *card, struct qeth_ipaddr *addr, int ipacmd)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"setdelmc");
+
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ memcpy(&cmd->data.setdelipm.mac,addr->mac, OSA_ADDR_LEN);
+ if (addr->proto == QETH_PROT_IPV6)
+ memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
+ sizeof(struct in6_addr));
+ else
+ memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr,4);
+
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+}
+static inline void
+qeth_fill_netmask(u8 *netmask, unsigned int len)
+{
+ int i,j;
+ for (i=0;i<16;i++) {
+ j=(len)-(i*8);
+ if (j >= 8)
+ netmask[i] = 0xff;
+ else if (j > 0)
+ netmask[i] = (u8)(0xFF00>>j);
+ else
+ netmask[i] = 0;
+ }
+}
+
+static int
+qeth_send_setdelip(struct qeth_card *card, struct qeth_ipaddr *addr,
+ int ipacmd, unsigned int flags)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+ __u8 netmask[16];
+
+ QETH_DBF_TEXT(trace,4,"setdelip");
+ QETH_DBF_TEXT_(trace,4,"flags%02X", flags);
+
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ if (addr->proto == QETH_PROT_IPV6) {
+ memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
+ sizeof(struct in6_addr));
+ qeth_fill_netmask(netmask,addr->u.a6.pfxlen);
+ memcpy(cmd->data.setdelip6.mask, netmask,
+ sizeof(struct in6_addr));
+ cmd->data.setdelip6.flags = flags;
+ } else {
+ memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
+ memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
+ cmd->data.setdelip4.flags = flags;
+ }
+
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+}
+
+static int
+qeth_layer2_register_addr_entry(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ if (!addr->is_multicast)
+ return 0;
+ QETH_DBF_TEXT(trace, 2, "setgmac");
+ QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
+ return qeth_layer2_send_setgroupmac(card, &addr->mac[0]);
+}
+
+static int
+qeth_layer2_deregister_addr_entry(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ if (!addr->is_multicast)
+ return 0;
+ QETH_DBF_TEXT(trace, 2, "delgmac");
+ QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
+ return qeth_layer2_send_delgroupmac(card, &addr->mac[0]);
+}
+
+static int
+qeth_layer3_register_addr_entry(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ char buf[50];
+ int rc;
+ int cnt = 3;
+
+ if (addr->proto == QETH_PROT_IPV4) {
+ QETH_DBF_TEXT(trace, 2,"setaddr4");
+ QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
+ } else if (addr->proto == QETH_PROT_IPV6) {
+ QETH_DBF_TEXT(trace, 2, "setaddr6");
+ QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
+ QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
+ } else {
+ QETH_DBF_TEXT(trace, 2, "setaddr?");
+ QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
+ }
+ do {
+ if (addr->is_multicast)
+ rc = qeth_send_setdelmc(card, addr, IPA_CMD_SETIPM);
+ else
+ rc = qeth_send_setdelip(card, addr, IPA_CMD_SETIP,
+ addr->set_flags);
+ if (rc)
+ QETH_DBF_TEXT(trace, 2, "failed");
+ } while ((--cnt > 0) && rc);
+ if (rc){
+ QETH_DBF_TEXT(trace, 2, "FAILED");
+ qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
+ PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n",
+ buf, rc, rc);
+ }
+ return rc;
+}
+
+static int
+qeth_layer3_deregister_addr_entry(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ //char buf[50];
+ int rc;
+
+ if (addr->proto == QETH_PROT_IPV4) {
+ QETH_DBF_TEXT(trace, 2,"deladdr4");
+ QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
+ } else if (addr->proto == QETH_PROT_IPV6) {
+ QETH_DBF_TEXT(trace, 2, "deladdr6");
+ QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
+ QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
+ } else {
+ QETH_DBF_TEXT(trace, 2, "deladdr?");
+ QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
+ }
+ if (addr->is_multicast)
+ rc = qeth_send_setdelmc(card, addr, IPA_CMD_DELIPM);
+ else
+ rc = qeth_send_setdelip(card, addr, IPA_CMD_DELIP,
+ addr->del_flags);
+ if (rc) {
+ QETH_DBF_TEXT(trace, 2, "failed");
+ /* TODO: re-activate this warning as soon as we have a
+ * clean mirco code
+ qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
+ PRINT_WARN("Could not deregister IP address %s (rc=%x)\n",
+ buf, rc);
+ */
+ }
+ return rc;
+}
+
+static int
+qeth_register_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ if (card->options.layer2)
+ return qeth_layer2_register_addr_entry(card, addr);
+
+ return qeth_layer3_register_addr_entry(card, addr);
+}
+
+static int
+qeth_deregister_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ if (card->options.layer2)
+ return qeth_layer2_deregister_addr_entry(card, addr);
+
+ return qeth_layer3_deregister_addr_entry(card, addr);
+}
+
+static u32
+qeth_ethtool_get_tx_csum(struct net_device *dev)
+{
+ /* We may need to say that we support tx csum offload if
+ * we do EDDP or TSO. There are discussions going on to
+ * enforce rules in the stack and in ethtool that make
+ * SG and TSO depend on HW_CSUM. At the moment there are
+ * no such rules....
+ * If we say yes here, we have to checksum outbound packets
+ * any time. */
+ return 0;
+}
+
+static int
+qeth_ethtool_set_tx_csum(struct net_device *dev, u32 data)
+{
+ return -EINVAL;
+}
+
+static u32
+qeth_ethtool_get_rx_csum(struct net_device *dev)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+
+ return (card->options.checksum_type == HW_CHECKSUMMING);
+}
+
+static int
+qeth_ethtool_set_rx_csum(struct net_device *dev, u32 data)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+ if (data)
+ card->options.checksum_type = HW_CHECKSUMMING;
+ else
+ card->options.checksum_type = SW_CHECKSUMMING;
+ return 0;
+}
+
+static u32
+qeth_ethtool_get_sg(struct net_device *dev)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+
+ return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
+ (dev->features & NETIF_F_SG));
+}
+
+static int
+qeth_ethtool_set_sg(struct net_device *dev, u32 data)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+
+ if (data) {
+ if (card->options.large_send != QETH_LARGE_SEND_NO)
+ dev->features |= NETIF_F_SG;
+ else {
+ dev->features &= ~NETIF_F_SG;
+ return -EINVAL;
+ }
+ } else
+ dev->features &= ~NETIF_F_SG;
+ return 0;
+}
+
+static u32
+qeth_ethtool_get_tso(struct net_device *dev)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+
+ return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
+ (dev->features & NETIF_F_TSO));
+}
+
+static int
+qeth_ethtool_set_tso(struct net_device *dev, u32 data)
+{
+ struct qeth_card *card = (struct qeth_card *)dev->priv;
+
+ if (data) {
+ if (card->options.large_send != QETH_LARGE_SEND_NO)
+ dev->features |= NETIF_F_TSO;
+ else {
+ dev->features &= ~NETIF_F_TSO;
+ return -EINVAL;
+ }
+ } else
+ dev->features &= ~NETIF_F_TSO;
+ return 0;
+}
+
+static struct ethtool_ops qeth_ethtool_ops = {
+ .get_tx_csum = qeth_ethtool_get_tx_csum,
+ .set_tx_csum = qeth_ethtool_set_tx_csum,
+ .get_rx_csum = qeth_ethtool_get_rx_csum,
+ .set_rx_csum = qeth_ethtool_set_rx_csum,
+ .get_sg = qeth_ethtool_get_sg,
+ .set_sg = qeth_ethtool_set_sg,
+ .get_tso = qeth_ethtool_get_tso,
+ .set_tso = qeth_ethtool_set_tso,
+};
+
+static int
+qeth_netdev_init(struct net_device *dev)
+{
+ struct qeth_card *card;
+
+ card = (struct qeth_card *) dev->priv;
+
+ QETH_DBF_TEXT(trace,3,"initdev");
+
+ dev->tx_timeout = &qeth_tx_timeout;
+ dev->watchdog_timeo = QETH_TX_TIMEOUT;
+ dev->open = qeth_open;
+ dev->stop = qeth_stop;
+ dev->hard_start_xmit = qeth_hard_start_xmit;
+ dev->do_ioctl = qeth_do_ioctl;
+ dev->get_stats = qeth_get_stats;
+ dev->change_mtu = qeth_change_mtu;
+ dev->neigh_setup = qeth_neigh_setup;
+ dev->set_multicast_list = qeth_set_multicast_list;
+#ifdef CONFIG_QETH_VLAN
+ dev->vlan_rx_register = qeth_vlan_rx_register;
+ dev->vlan_rx_kill_vid = qeth_vlan_rx_kill_vid;
+ dev->vlan_rx_add_vid = qeth_vlan_rx_add_vid;
+#endif
+ dev->hard_header = card->orig_hard_header;
+ if (qeth_get_netdev_flags(card) & IFF_NOARP) {
+ dev->rebuild_header = NULL;
+ dev->hard_header = NULL;
+ if (card->options.fake_ll)
+ dev->hard_header = qeth_fake_header;
+ dev->header_cache_update = NULL;
+ dev->hard_header_cache = NULL;
+ }
+#ifdef CONFIG_QETH_IPV6
+ /*IPv6 address autoconfiguration stuff*/
+ if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
+ card->dev->dev_id = card->info.unique_id & 0xffff;
+#endif
+ dev->hard_header_parse = NULL;
+ dev->set_mac_address = qeth_layer2_set_mac_address;
+ dev->flags |= qeth_get_netdev_flags(card);
+ if ((card->options.fake_broadcast) ||
+ (card->info.broadcast_capable))
+ dev->flags |= IFF_BROADCAST;
+ dev->hard_header_len =
+ qeth_get_hlen(card->info.link_type) + card->options.add_hhlen;
+ dev->addr_len = OSA_ADDR_LEN;
+ dev->mtu = card->info.initial_mtu;
+
+ SET_ETHTOOL_OPS(dev, &qeth_ethtool_ops);
+
+ SET_MODULE_OWNER(dev);
+ return 0;
+}
+
+static void
+qeth_init_func_level(struct qeth_card *card)
+{
+ if (card->ipato.enabled) {
+ if (card->info.type == QETH_CARD_TYPE_IQD)
+ card->info.func_level =
+ QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
+ else
+ card->info.func_level =
+ QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
+ } else {
+ if (card->info.type == QETH_CARD_TYPE_IQD)
+ card->info.func_level =
+ QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
+ else
+ card->info.func_level =
+ QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
+ }
+}
+
+/**
+ * hardsetup card, initialize MPC and QDIO stuff
+ */
+static int
+qeth_hardsetup_card(struct qeth_card *card)
+{
+ int retries = 3;
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "hrdsetup");
+
+retry:
+ if (retries < 3){
+ PRINT_WARN("Retrying to do IDX activates.\n");
+ ccw_device_set_offline(CARD_DDEV(card));
+ ccw_device_set_offline(CARD_WDEV(card));
+ ccw_device_set_offline(CARD_RDEV(card));
+ ccw_device_set_online(CARD_RDEV(card));
+ ccw_device_set_online(CARD_WDEV(card));
+ ccw_device_set_online(CARD_DDEV(card));
+ }
+ rc = qeth_qdio_clear_card(card,card->info.type==QETH_CARD_TYPE_OSAE);
+ if (rc == -ERESTARTSYS) {
+ QETH_DBF_TEXT(setup, 2, "break1");
+ return rc;
+ } else if (rc) {
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ if (--retries < 0)
+ goto out;
+ else
+ goto retry;
+ }
+ if ((rc = qeth_get_unitaddr(card))){
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ return rc;
+ }
+ qeth_init_tokens(card);
+ qeth_init_func_level(card);
+ rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
+ if (rc == -ERESTARTSYS) {
+ QETH_DBF_TEXT(setup, 2, "break2");
+ return rc;
+ } else if (rc) {
+ QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
+ if (--retries < 0)
+ goto out;
+ else
+ goto retry;
+ }
+ rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
+ if (rc == -ERESTARTSYS) {
+ QETH_DBF_TEXT(setup, 2, "break3");
+ return rc;
+ } else if (rc) {
+ QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
+ if (--retries < 0)
+ goto out;
+ else
+ goto retry;
+ }
+ if ((rc = qeth_mpc_initialize(card))){
+ QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
+ goto out;
+ }
+ /*network device will be recovered*/
+ if (card->dev) {
+ card->dev->hard_header = card->orig_hard_header;
+ return 0;
+ }
+ /* at first set_online allocate netdev */
+ card->dev = qeth_get_netdevice(card->info.type,
+ card->info.link_type);
+ if (!card->dev){
+ qeth_qdio_clear_card(card, card->info.type ==
+ QETH_CARD_TYPE_OSAE);
+ rc = -ENODEV;
+ QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
+ goto out;
+ }
+ card->dev->priv = card;
+ card->orig_hard_header = card->dev->hard_header;
+ card->dev->type = qeth_get_arphdr_type(card->info.type,
+ card->info.link_type);
+ card->dev->init = qeth_netdev_init;
+ return 0;
+out:
+ PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
+ return rc;
+}
+
+static int
+qeth_default_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"defadpcb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code == 0){
+ cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
+ if (cmd->hdr.prot_version == QETH_PROT_IPV4)
+ card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
+#ifdef CONFIG_QETH_IPV6
+ if (cmd->hdr.prot_version == QETH_PROT_IPV6)
+ card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
+#endif
+ }
+ if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
+ cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
+ card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
+ QETH_DBF_TEXT_(trace, 3, "csum:%d", card->info.csum_mask);
+ }
+ return 0;
+}
+
+static int
+qeth_default_setadapterparms_cb(struct qeth_card *card,
+ struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"defadpcb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code == 0)
+ cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
+ return 0;
+}
+
+static int
+qeth_query_setadapterparms_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,3,"quyadpcb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
+ card->info.link_type =
+ cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
+ card->options.adp.supported_funcs =
+ cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
+ return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
+}
+
+static int
+qeth_query_setadapterparms(struct qeth_card *card)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(trace,3,"queryadp");
+ iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
+ sizeof(struct qeth_ipacmd_setadpparms));
+ rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
+ return rc;
+}
+
+static int
+qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
+ struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"chgmaccb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ memcpy(card->dev->dev_addr,
+ &cmd->data.setadapterparms.data.change_addr.addr,OSA_ADDR_LEN);
+ qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
+ return 0;
+}
+
+static int
+qeth_setadpparms_change_macaddr(struct qeth_card *card)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"chgmac");
+
+ iob = qeth_get_adapter_cmd(card,IPA_SETADP_ALTER_MAC_ADDRESS,
+ sizeof(struct qeth_ipacmd_setadpparms));
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
+ cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
+ memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
+ card->dev->dev_addr, OSA_ADDR_LEN);
+ rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
+ NULL);
+ return rc;
+}
+
+static int
+qeth_send_setadp_mode(struct qeth_card *card, __u32 command, __u32 mode)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"adpmode");
+
+ iob = qeth_get_adapter_cmd(card, command,
+ sizeof(struct qeth_ipacmd_setadpparms));
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setadapterparms.data.mode = mode;
+ rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
+ NULL);
+ return rc;
+}
+
+static inline int
+qeth_setadapter_hstr(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,4,"adphstr");
+
+ if (qeth_adp_supported(card,IPA_SETADP_SET_BROADCAST_MODE)) {
+ rc = qeth_send_setadp_mode(card, IPA_SETADP_SET_BROADCAST_MODE,
+ card->options.broadcast_mode);
+ if (rc)
+ PRINT_WARN("couldn't set broadcast mode on "
+ "device %s: x%x\n",
+ CARD_BUS_ID(card), rc);
+ rc = qeth_send_setadp_mode(card, IPA_SETADP_ALTER_MAC_ADDRESS,
+ card->options.macaddr_mode);
+ if (rc)
+ PRINT_WARN("couldn't set macaddr mode on "
+ "device %s: x%x\n", CARD_BUS_ID(card), rc);
+ return rc;
+ }
+ if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
+ PRINT_WARN("set adapter parameters not available "
+ "to set broadcast mode, using ALLRINGS "
+ "on device %s:\n", CARD_BUS_ID(card));
+ if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
+ PRINT_WARN("set adapter parameters not available "
+ "to set macaddr mode, using NONCANONICAL "
+ "on device %s:\n", CARD_BUS_ID(card));
+ return 0;
+}
+
+static int
+qeth_setadapter_parms(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "setadprm");
+
+ if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)){
+ PRINT_WARN("set adapter parameters not supported "
+ "on device %s.\n",
+ CARD_BUS_ID(card));
+ QETH_DBF_TEXT(setup, 2, " notsupp");
+ return 0;
+ }
+ rc = qeth_query_setadapterparms(card);
+ if (rc) {
+ PRINT_WARN("couldn't set adapter parameters on device %s: "
+ "x%x\n", CARD_BUS_ID(card), rc);
+ return rc;
+ }
+ if (qeth_adp_supported(card,IPA_SETADP_ALTER_MAC_ADDRESS)) {
+ rc = qeth_setadpparms_change_macaddr(card);
+ if (rc)
+ PRINT_WARN("couldn't get MAC address on "
+ "device %s: x%x\n",
+ CARD_BUS_ID(card), rc);
+ }
+
+ if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
+ (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
+ rc = qeth_setadapter_hstr(card);
+
+ return rc;
+}
+
+static int
+qeth_layer2_initialize(struct qeth_card *card)
+{
+ int rc = 0;
+
+
+ QETH_DBF_TEXT(setup, 2, "doL2init");
+ QETH_DBF_TEXT_(setup, 2, "doL2%s", CARD_BUS_ID(card));
+
+ rc = qeth_setadpparms_change_macaddr(card);
+ if (rc) {
+ PRINT_WARN("couldn't get MAC address on "
+ "device %s: x%x\n",
+ CARD_BUS_ID(card), rc);
+ QETH_DBF_TEXT_(setup, 2,"1err%d",rc);
+ return rc;
+ }
+ QETH_DBF_HEX(setup,2, card->dev->dev_addr, OSA_ADDR_LEN);
+
+ rc = qeth_layer2_send_setmac(card, &card->dev->dev_addr[0]);
+ if (rc)
+ QETH_DBF_TEXT_(setup, 2,"2err%d",rc);
+ return 0;
+}
+
+
+static int
+qeth_send_startstoplan(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
+ enum qeth_prot_versions prot)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ iob = qeth_get_ipacmd_buffer(card,ipacmd,prot);
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+}
+
+static int
+qeth_send_startlan(struct qeth_card *card, enum qeth_prot_versions prot)
+{
+ int rc;
+
+ QETH_DBF_TEXT_(setup, 2, "strtlan%i", prot);
+
+ rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, prot);
+ return rc;
+}
+
+static int
+qeth_send_stoplan(struct qeth_card *card)
+{
+ int rc = 0;
+
+ /*
+ * TODO: according to the IPA format document page 14,
+ * TCP/IP (we!) never issue a STOPLAN
+ * is this right ?!?
+ */
+ QETH_DBF_TEXT(trace, 2, "stoplan");
+
+ rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, QETH_PROT_IPV4);
+ return rc;
+}
+
+static int
+qeth_query_ipassists_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(setup, 2, "qipasscb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
+ card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
+ card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
+ } else {
+#ifdef CONFIG_QETH_IPV6
+ card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
+ card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
+#endif
+ }
+ QETH_DBF_TEXT(setup, 2, "suppenbl");
+ QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_supported);
+ QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_enabled);
+ return 0;
+}
+
+static int
+qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT_(setup, 2, "qipassi%i", prot);
+ if (card->options.layer2) {
+ QETH_DBF_TEXT(setup, 2, "noprmly2");
+ return -EPERM;
+ }
+
+ iob = qeth_get_ipacmd_buffer(card,IPA_CMD_QIPASSIST,prot);
+ rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
+ return rc;
+}
+
+static struct qeth_cmd_buffer *
+qeth_get_setassparms_cmd(struct qeth_card *card, enum qeth_ipa_funcs ipa_func,
+ __u16 cmd_code, __u16 len,
+ enum qeth_prot_versions prot)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"getasscm");
+ iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETASSPARMS,prot);
+
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setassparms.hdr.assist_no = ipa_func;
+ cmd->data.setassparms.hdr.length = 8 + len;
+ cmd->data.setassparms.hdr.command_code = cmd_code;
+ cmd->data.setassparms.hdr.return_code = 0;
+ cmd->data.setassparms.hdr.seq_no = 0;
+
+ return iob;
+}
+
+static int
+qeth_send_setassparms(struct qeth_card *card, struct qeth_cmd_buffer *iob,
+ __u16 len, long data,
+ int (*reply_cb)
+ (struct qeth_card *,struct qeth_reply *,unsigned long),
+ void *reply_param)
+{
+ int rc;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,4,"sendassp");
+
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ if (len <= sizeof(__u32))
+ cmd->data.setassparms.data.flags_32bit = (__u32) data;
+ else if (len > sizeof(__u32))
+ memcpy(&cmd->data.setassparms.data, (void *) data, len);
+
+ rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
+ return rc;
+}
+
+#ifdef CONFIG_QETH_IPV6
+static int
+qeth_send_simple_setassparms_ipv6(struct qeth_card *card,
+ enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
+
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(trace,4,"simassp6");
+ iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
+ 0, QETH_PROT_IPV6);
+ rc = qeth_send_setassparms(card, iob, 0, 0,
+ qeth_default_setassparms_cb, NULL);
+ return rc;
+}
+#endif
+
+static int
+qeth_send_simple_setassparms(struct qeth_card *card,
+ enum qeth_ipa_funcs ipa_func,
+ __u16 cmd_code, long data)
+{
+ int rc;
+ int length = 0;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(trace,4,"simassp4");
+ if (data)
+ length = sizeof(__u32);
+ iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
+ length, QETH_PROT_IPV4);
+ rc = qeth_send_setassparms(card, iob, length, data,
+ qeth_default_setassparms_cb, NULL);
+ return rc;
+}
+
+static inline int
+qeth_start_ipa_arp_processing(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"ipaarp");
+
+ if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
+ PRINT_WARN("ARP processing not supported "
+ "on %s!\n", QETH_CARD_IFNAME(card));
+ return 0;
+ }
+ rc = qeth_send_simple_setassparms(card,IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ PRINT_WARN("Could not start ARP processing "
+ "assist on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ }
+ return rc;
+}
+
+static int
+qeth_start_ipa_ip_fragmentation(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"ipaipfrg");
+
+ if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
+ PRINT_INFO("Hardware IP fragmentation not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ PRINT_WARN("Could not start Hardware IP fragmentation "
+ "assist on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ } else
+ PRINT_INFO("Hardware IP fragmentation enabled \n");
+ return rc;
+}
+
+static int
+qeth_start_ipa_source_mac(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"stsrcmac");
+
+ if (!card->options.fake_ll)
+ return -EOPNOTSUPP;
+
+ if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
+ PRINT_INFO("Inbound source address not "
+ "supported on %s\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
+ IPA_CMD_ASS_START, 0);
+ if (rc)
+ PRINT_WARN("Could not start inbound source "
+ "assist on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ return rc;
+}
+
+static int
+qeth_start_ipa_vlan(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"strtvlan");
+
+#ifdef CONFIG_QETH_VLAN
+ if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
+ PRINT_WARN("VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
+ IPA_CMD_ASS_START,0);
+ if (rc) {
+ PRINT_WARN("Could not start vlan "
+ "assist on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ } else {
+ PRINT_INFO("VLAN enabled \n");
+ card->dev->features |=
+ NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX;
+ }
+#endif /* QETH_VLAN */
+ return rc;
+}
+
+static int
+qeth_start_ipa_multicast(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"stmcast");
+
+ if (!qeth_is_supported(card, IPA_MULTICASTING)) {
+ PRINT_WARN("Multicast not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
+ IPA_CMD_ASS_START,0);
+ if (rc) {
+ PRINT_WARN("Could not start multicast "
+ "assist on %s: rc=%i\n",
+ QETH_CARD_IFNAME(card), rc);
+ } else {
+ PRINT_INFO("Multicast enabled\n");
+ card->dev->flags |= IFF_MULTICAST;
+ }
+ return rc;
+}
+
+#ifdef CONFIG_QETH_IPV6
+static int
+qeth_softsetup_ipv6(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"softipv6");
+
+ netif_stop_queue(card->dev);
+ rc = qeth_send_startlan(card, QETH_PROT_IPV6);
+ if (rc) {
+ PRINT_ERR("IPv6 startlan failed on %s\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ netif_wake_queue(card->dev);
+ rc = qeth_query_ipassists(card,QETH_PROT_IPV6);
+ if (rc) {
+ PRINT_ERR("IPv6 query ipassist failed on %s\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ rc = qeth_send_simple_setassparms(card, IPA_IPV6,
+ IPA_CMD_ASS_START, 3);
+ if (rc) {
+ PRINT_WARN("IPv6 start assist (version 4) failed "
+ "on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ return rc;
+ }
+ rc = qeth_send_simple_setassparms_ipv6(card, IPA_IPV6,
+ IPA_CMD_ASS_START);
+ if (rc) {
+ PRINT_WARN("IPV6 start assist (version 6) failed "
+ "on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ return rc;
+ }
+ rc = qeth_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
+ IPA_CMD_ASS_START);
+ if (rc) {
+ PRINT_WARN("Could not enable passthrough "
+ "on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ return rc;
+ }
+ PRINT_INFO("IPV6 enabled \n");
+ return 0;
+}
+
+#endif
+
+static int
+qeth_start_ipa_ipv6(struct qeth_card *card)
+{
+ int rc = 0;
+#ifdef CONFIG_QETH_IPV6
+ QETH_DBF_TEXT(trace,3,"strtipv6");
+
+ if (!qeth_is_supported(card, IPA_IPV6)) {
+ PRINT_WARN("IPv6 not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ return 0;
+ }
+ rc = qeth_softsetup_ipv6(card);
+#endif
+ return rc ;
+}
+
+static int
+qeth_start_ipa_broadcast(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"stbrdcst");
+ card->info.broadcast_capable = 0;
+ if (!qeth_is_supported(card, IPA_FILTERING)) {
+ PRINT_WARN("Broadcast not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+ rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ PRINT_WARN("Could not enable broadcasting filtering "
+ "on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ goto out;
+ }
+
+ rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
+ IPA_CMD_ASS_CONFIGURE, 1);
+ if (rc) {
+ PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n",
+ QETH_CARD_IFNAME(card), rc);
+ goto out;
+ }
+ card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
+ PRINT_INFO("Broadcast enabled \n");
+ rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
+ IPA_CMD_ASS_ENABLE, 1);
+ if (rc) {
+ PRINT_WARN("Could not set up broadcast echo filtering on "
+ "%s: 0x%x\n", QETH_CARD_IFNAME(card), rc);
+ goto out;
+ }
+ card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
+out:
+ if (card->info.broadcast_capable)
+ card->dev->flags |= IFF_BROADCAST;
+ else
+ card->dev->flags &= ~IFF_BROADCAST;
+ return rc;
+}
+
+static int
+qeth_send_checksum_command(struct qeth_card *card)
+{
+ int rc;
+
+ rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ PRINT_WARN("Starting Inbound HW Checksumming failed on %s: "
+ "0x%x,\ncontinuing using Inbound SW Checksumming\n",
+ QETH_CARD_IFNAME(card), rc);
+ return rc;
+ }
+ rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
+ IPA_CMD_ASS_ENABLE,
+ card->info.csum_mask);
+ if (rc) {
+ PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: "
+ "0x%x,\ncontinuing using Inbound SW Checksumming\n",
+ QETH_CARD_IFNAME(card), rc);
+ return rc;
+ }
+ return 0;
+}
+
+static int
+qeth_start_ipa_checksum(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"strtcsum");
+
+ if (card->options.checksum_type == NO_CHECKSUMMING) {
+ PRINT_WARN("Using no checksumming on %s.\n",
+ QETH_CARD_IFNAME(card));
+ return 0;
+ }
+ if (card->options.checksum_type == SW_CHECKSUMMING) {
+ PRINT_WARN("Using SW checksumming on %s.\n",
+ QETH_CARD_IFNAME(card));
+ return 0;
+ }
+ if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
+ PRINT_WARN("Inbound HW Checksumming not "
+ "supported on %s,\ncontinuing "
+ "using Inbound SW Checksumming\n",
+ QETH_CARD_IFNAME(card));
+ card->options.checksum_type = SW_CHECKSUMMING;
+ return 0;
+ }
+ rc = qeth_send_checksum_command(card);
+ if (!rc) {
+ PRINT_INFO("HW Checksumming (inbound) enabled \n");
+ }
+ return rc;
+}
+
+static int
+qeth_start_ipa_tso(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"sttso");
+
+ if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
+ PRINT_WARN("Outbound TSO not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ rc = -EOPNOTSUPP;
+ } else {
+ rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
+ IPA_CMD_ASS_START,0);
+ if (rc)
+ PRINT_WARN("Could not start outbound TSO "
+ "assist on %s: rc=%i\n",
+ QETH_CARD_IFNAME(card), rc);
+ else
+ PRINT_INFO("Outbound TSO enabled\n");
+ }
+ if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)){
+ card->options.large_send = QETH_LARGE_SEND_NO;
+ card->dev->features &= ~ (NETIF_F_TSO | NETIF_F_SG);
+ }
+ return rc;
+}
+
+static int
+qeth_start_ipassists(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(trace,3,"strtipas");
+ qeth_start_ipa_arp_processing(card); /* go on*/
+ qeth_start_ipa_ip_fragmentation(card); /* go on*/
+ qeth_start_ipa_source_mac(card); /* go on*/
+ qeth_start_ipa_vlan(card); /* go on*/
+ qeth_start_ipa_multicast(card); /* go on*/
+ qeth_start_ipa_ipv6(card); /* go on*/
+ qeth_start_ipa_broadcast(card); /* go on*/
+ qeth_start_ipa_checksum(card); /* go on*/
+ qeth_start_ipa_tso(card); /* go on*/
+ return 0;
+}
+
+static int
+qeth_send_setrouting(struct qeth_card *card, enum qeth_routing_types type,
+ enum qeth_prot_versions prot)
+{
+ int rc;
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT(trace,4,"setroutg");
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setrtg.type = (type);
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+
+}
+
+static void
+qeth_correct_routing_type(struct qeth_card *card, enum qeth_routing_types *type,
+ enum qeth_prot_versions prot)
+{
+ if (card->info.type == QETH_CARD_TYPE_IQD) {
+ switch (*type) {
+ case NO_ROUTER:
+ case PRIMARY_CONNECTOR:
+ case SECONDARY_CONNECTOR:
+ case MULTICAST_ROUTER:
+ return;
+ default:
+ goto out_inval;
+ }
+ } else {
+ switch (*type) {
+ case NO_ROUTER:
+ case PRIMARY_ROUTER:
+ case SECONDARY_ROUTER:
+ return;
+ case MULTICAST_ROUTER:
+ if (qeth_is_ipafunc_supported(card, prot,
+ IPA_OSA_MC_ROUTER))
+ return;
+ default:
+ goto out_inval;
+ }
+ }
+out_inval:
+ PRINT_WARN("Routing type '%s' not supported for interface %s.\n"
+ "Router status set to 'no router'.\n",
+ ((*type == PRIMARY_ROUTER)? "primary router" :
+ (*type == SECONDARY_ROUTER)? "secondary router" :
+ (*type == PRIMARY_CONNECTOR)? "primary connector" :
+ (*type == SECONDARY_CONNECTOR)? "secondary connector" :
+ (*type == MULTICAST_ROUTER)? "multicast router" :
+ "unknown"),
+ card->dev->name);
+ *type = NO_ROUTER;
+}
+
+int
+qeth_setrouting_v4(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(trace,3,"setrtg4");
+
+ qeth_correct_routing_type(card, &card->options.route4.type,
+ QETH_PROT_IPV4);
+
+ rc = qeth_send_setrouting(card, card->options.route4.type,
+ QETH_PROT_IPV4);
+ if (rc) {
+ card->options.route4.type = NO_ROUTER;
+ PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
+ "Type set to 'no router'.\n",
+ rc, QETH_CARD_IFNAME(card));
+ }
+ return rc;
+}
+
+int
+qeth_setrouting_v6(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace,3,"setrtg6");
+#ifdef CONFIG_QETH_IPV6
+
+ qeth_correct_routing_type(card, &card->options.route6.type,
+ QETH_PROT_IPV6);
+
+ if ((card->options.route6.type == NO_ROUTER) ||
+ ((card->info.type == QETH_CARD_TYPE_OSAE) &&
+ (card->options.route6.type == MULTICAST_ROUTER) &&
+ !qeth_is_supported6(card,IPA_OSA_MC_ROUTER)))
+ return 0;
+ rc = qeth_send_setrouting(card, card->options.route6.type,
+ QETH_PROT_IPV6);
+ if (rc) {
+ card->options.route6.type = NO_ROUTER;
+ PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
+ "Type set to 'no router'.\n",
+ rc, QETH_CARD_IFNAME(card));
+ }
+#endif
+ return rc;
+}
+
+int
+qeth_set_large_send(struct qeth_card *card)
+{
+ int rc = 0;
+
+ if (card->dev == NULL)
+ return 0;
+
+ netif_stop_queue(card->dev);
+ switch (card->options.large_send) {
+ case QETH_LARGE_SEND_EDDP:
+ card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
+ break;
+ case QETH_LARGE_SEND_TSO:
+ if (qeth_is_supported(card, IPA_OUTBOUND_TSO)){
+ card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
+ } else {
+ PRINT_WARN("TSO not supported on %s. "
+ "large_send set to 'no'.\n",
+ card->dev->name);
+ card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
+ card->options.large_send = QETH_LARGE_SEND_NO;
+ rc = -EOPNOTSUPP;
+ }
+ break;
+ default: /* includes QETH_LARGE_SEND_NO */
+ card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
+ break;
+ }
+
+ netif_wake_queue(card->dev);
+ return rc;
+}
+
+/*
+ * softsetup card: init IPA stuff
+ */
+static int
+qeth_softsetup_card(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(setup, 2, "softsetp");
+
+ if ((rc = qeth_send_startlan(card, QETH_PROT_IPV4))){
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ if (rc == 0xe080){
+ PRINT_WARN("LAN on card %s if offline! "
+ "Continuing softsetup.\n",
+ CARD_BUS_ID(card));
+ card->lan_online = 0;
+ } else
+ return rc;
+ } else
+ card->lan_online = 1;
+ if (card->options.layer2) {
+ card->dev->features |=
+ NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX;
+ card->dev->flags|=IFF_MULTICAST|IFF_BROADCAST;
+ card->info.broadcast_capable=1;
+ if ((rc = qeth_layer2_initialize(card))) {
+ QETH_DBF_TEXT_(setup, 2, "L2err%d", rc);
+ return rc;
+ }
+#ifdef CONFIG_QETH_VLAN
+ qeth_layer2_process_vlans(card, 0);
+#endif
+ goto out;
+ }
+ if ((card->options.large_send == QETH_LARGE_SEND_EDDP) ||
+ (card->options.large_send == QETH_LARGE_SEND_TSO))
+ card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
+ else
+ card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
+
+ if ((rc = qeth_setadapter_parms(card)))
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ if ((rc = qeth_start_ipassists(card)))
+ QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
+ if ((rc = qeth_setrouting_v4(card)))
+ QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
+ if ((rc = qeth_setrouting_v6(card)))
+ QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
+out:
+ netif_stop_queue(card->dev);
+ return 0;
+}
+
+#ifdef CONFIG_QETH_IPV6
+static int
+qeth_get_unique_id_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code == 0)
+ card->info.unique_id = *((__u16 *)
+ &cmd->data.create_destroy_addr.unique_id[6]);
+ else {
+ card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
+ UNIQUE_ID_NOT_BY_CARD;
+ PRINT_WARN("couldn't get a unique id from the card on device "
+ "%s (result=x%x), using default id. ipv6 "
+ "autoconfig on other lpars may lead to duplicate "
+ "ip addresses. please use manually "
+ "configured ones.\n",
+ CARD_BUS_ID(card), cmd->hdr.return_code);
+ }
+ return 0;
+}
+#endif
+
+static int
+qeth_put_unique_id(struct qeth_card *card)
+{
+
+ int rc = 0;
+#ifdef CONFIG_QETH_IPV6
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(trace,2,"puniqeid");
+
+ if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
+ UNIQUE_ID_NOT_BY_CARD)
+ return -1;
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
+ QETH_PROT_IPV6);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
+ card->info.unique_id;
+ memcpy(&cmd->data.create_destroy_addr.unique_id[0],
+ card->dev->dev_addr, OSA_ADDR_LEN);
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+#else
+ card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
+ UNIQUE_ID_NOT_BY_CARD;
+#endif
+ return rc;
+}
+
+/**
+ * Clear IP List
+ */
+static void
+qeth_clear_ip_list(struct qeth_card *card, int clean, int recover)
+{
+ struct qeth_ipaddr *addr, *tmp;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace,4,"clearip");
+ spin_lock_irqsave(&card->ip_lock, flags);
+ /* clear todo list */
+ list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry){
+ list_del(&addr->entry);
+ kfree(addr);
+ }
+
+ while (!list_empty(&card->ip_list)) {
+ addr = list_entry(card->ip_list.next,
+ struct qeth_ipaddr, entry);
+ list_del_init(&addr->entry);
+ if (clean) {
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ qeth_deregister_addr_entry(card, addr);
+ spin_lock_irqsave(&card->ip_lock, flags);
+ }
+ if (!recover || addr->is_multicast) {
+ kfree(addr);
+ continue;
+ }
+ list_add_tail(&addr->entry, card->ip_tbd_list);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+static void
+qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
+ int clear_start_mask)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ card->thread_allowed_mask = threads;
+ if (clear_start_mask)
+ card->thread_start_mask &= threads;
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ wake_up(&card->wait_q);
+}
+
+static inline int
+qeth_threads_running(struct qeth_card *card, unsigned long threads)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ rc = (card->thread_running_mask & threads);
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+ return rc;
+}
+
+static int
+qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
+{
+ return wait_event_interruptible(card->wait_q,
+ qeth_threads_running(card, threads) == 0);
+}
+
+static int
+qeth_stop_card(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(setup ,2,"stopcard");
+ QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
+
+ qeth_set_allowed_threads(card, 0, 1);
+ if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
+ return -ERESTARTSYS;
+ if (card->read.state == CH_STATE_UP &&
+ card->write.state == CH_STATE_UP &&
+ (card->state == CARD_STATE_UP)) {
+ rtnl_lock();
+ dev_close(card->dev);
+ rtnl_unlock();
+ if (!card->use_hard_stop) {
+ __u8 *mac = &card->dev->dev_addr[0];
+ rc = qeth_layer2_send_delmac(card, mac);
+ QETH_DBF_TEXT_(setup, 2, "Lerr%d", rc);
+ if ((rc = qeth_send_stoplan(card)))
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ }
+ card->state = CARD_STATE_SOFTSETUP;
+ }
+ if (card->state == CARD_STATE_SOFTSETUP) {
+#ifdef CONFIG_QETH_VLAN
+ if (card->options.layer2)
+ qeth_layer2_process_vlans(card, 1);
+#endif
+ qeth_clear_ip_list(card, !card->use_hard_stop, 1);
+ qeth_clear_ipacmd_list(card);
+ card->state = CARD_STATE_HARDSETUP;
+ }
+ if (card->state == CARD_STATE_HARDSETUP) {
+ if ((!card->use_hard_stop) &&
+ (!card->options.layer2))
+ if ((rc = qeth_put_unique_id(card)))
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ qeth_qdio_clear_card(card, 0);
+ qeth_clear_qdio_buffers(card);
+ qeth_clear_working_pool_list(card);
+ card->state = CARD_STATE_DOWN;
+ }
+ if (card->state == CARD_STATE_DOWN) {
+ qeth_clear_cmd_buffers(&card->read);
+ qeth_clear_cmd_buffers(&card->write);
+ }
+ card->use_hard_stop = 0;
+ return rc;
+}
+
+
+static int
+qeth_get_unique_id(struct qeth_card *card)
+{
+ int rc = 0;
+#ifdef CONFIG_QETH_IPV6
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(setup, 2, "guniqeid");
+
+ if (!qeth_is_supported(card,IPA_IPV6)) {
+ card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
+ UNIQUE_ID_NOT_BY_CARD;
+ return 0;
+ }
+
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
+ QETH_PROT_IPV6);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
+ card->info.unique_id;
+
+ rc = qeth_send_ipa_cmd(card, iob, qeth_get_unique_id_cb, NULL);
+#else
+ card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
+ UNIQUE_ID_NOT_BY_CARD;
+#endif
+ return rc;
+}
+static void
+qeth_print_status_with_portname(struct qeth_card *card)
+{
+ char dbf_text[15];
+ int i;
+
+ sprintf(dbf_text, "%s", card->info.portname + 1);
+ for (i = 0; i < 8; i++)
+ dbf_text[i] =
+ (char) _ebcasc[(__u8) dbf_text[i]];
+ dbf_text[8] = 0;
+ printk("qeth: Device %s/%s/%s is a%s card%s%s%s\n"
+ "with link type %s (portname: %s)\n",
+ CARD_RDEV_ID(card),
+ CARD_WDEV_ID(card),
+ CARD_DDEV_ID(card),
+ qeth_get_cardname(card),
+ (card->info.mcl_level[0]) ? " (level: " : "",
+ (card->info.mcl_level[0]) ? card->info.mcl_level : "",
+ (card->info.mcl_level[0]) ? ")" : "",
+ qeth_get_cardname_short(card),
+ dbf_text);
+
+}
+
+static void
+qeth_print_status_no_portname(struct qeth_card *card)
+{
+ if (card->info.portname[0])
+ printk("qeth: Device %s/%s/%s is a%s "
+ "card%s%s%s\nwith link type %s "
+ "(no portname needed by interface).\n",
+ CARD_RDEV_ID(card),
+ CARD_WDEV_ID(card),
+ CARD_DDEV_ID(card),
+ qeth_get_cardname(card),
+ (card->info.mcl_level[0]) ? " (level: " : "",
+ (card->info.mcl_level[0]) ? card->info.mcl_level : "",
+ (card->info.mcl_level[0]) ? ")" : "",
+ qeth_get_cardname_short(card));
+ else
+ printk("qeth: Device %s/%s/%s is a%s "
+ "card%s%s%s\nwith link type %s.\n",
+ CARD_RDEV_ID(card),
+ CARD_WDEV_ID(card),
+ CARD_DDEV_ID(card),
+ qeth_get_cardname(card),
+ (card->info.mcl_level[0]) ? " (level: " : "",
+ (card->info.mcl_level[0]) ? card->info.mcl_level : "",
+ (card->info.mcl_level[0]) ? ")" : "",
+ qeth_get_cardname_short(card));
+}
+
+static void
+qeth_print_status_message(struct qeth_card *card)
+{
+ switch (card->info.type) {
+ case QETH_CARD_TYPE_OSAE:
+ /* VM will use a non-zero first character
+ * to indicate a HiperSockets like reporting
+ * of the level OSA sets the first character to zero
+ * */
+ if (!card->info.mcl_level[0]) {
+ sprintf(card->info.mcl_level,"%02x%02x",
+ card->info.mcl_level[2],
+ card->info.mcl_level[3]);
+
+ card->info.mcl_level[QETH_MCL_LENGTH] = 0;
+ break;
+ }
+ /* fallthrough */
+ case QETH_CARD_TYPE_IQD:
+ card->info.mcl_level[0] = (char) _ebcasc[(__u8)
+ card->info.mcl_level[0]];
+ card->info.mcl_level[1] = (char) _ebcasc[(__u8)
+ card->info.mcl_level[1]];
+ card->info.mcl_level[2] = (char) _ebcasc[(__u8)
+ card->info.mcl_level[2]];
+ card->info.mcl_level[3] = (char) _ebcasc[(__u8)
+ card->info.mcl_level[3]];
+ card->info.mcl_level[QETH_MCL_LENGTH] = 0;
+ break;
+ default:
+ memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
+ }
+ if (card->info.portname_required)
+ qeth_print_status_with_portname(card);
+ else
+ qeth_print_status_no_portname(card);
+}
+
+static int
+qeth_register_netdev(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(setup, 3, "regnetd");
+ if (card->dev->reg_state != NETREG_UNINITIALIZED) {
+ qeth_netdev_init(card->dev);
+ return 0;
+ }
+ /* sysfs magic */
+ SET_NETDEV_DEV(card->dev, &card->gdev->dev);
+ return register_netdev(card->dev);
+}
+
+static void
+qeth_start_again(struct qeth_card *card)
+{
+ QETH_DBF_TEXT(setup ,2, "startag");
+
+ rtnl_lock();
+ dev_open(card->dev);
+ rtnl_unlock();
+ /* this also sets saved unicast addresses */
+ qeth_set_multicast_list(card->dev);
+}
+
+
+/* Layer 2 specific stuff */
+#define IGNORE_PARAM_EQ(option,value,reset_value,msg) \
+ if (card->options.option == value) { \
+ PRINT_ERR("%s not supported with layer 2 " \
+ "functionality, ignoring option on read" \
+ "channel device %s .\n",msg,CARD_RDEV_ID(card)); \
+ card->options.option = reset_value; \
+ }
+#define IGNORE_PARAM_NEQ(option,value,reset_value,msg) \
+ if (card->options.option != value) { \
+ PRINT_ERR("%s not supported with layer 2 " \
+ "functionality, ignoring option on read" \
+ "channel device %s .\n",msg,CARD_RDEV_ID(card)); \
+ card->options.option = reset_value; \
+ }
+
+
+static void qeth_make_parameters_consistent(struct qeth_card *card)
+{
+
+ if (card->options.layer2) {
+ if (card->info.type == QETH_CARD_TYPE_IQD) {
+ PRINT_ERR("Device %s does not support " \
+ "layer 2 functionality. " \
+ "Ignoring layer2 option.\n",CARD_BUS_ID(card));
+ }
+ IGNORE_PARAM_NEQ(route4.type, NO_ROUTER, NO_ROUTER,
+ "Routing options are");
+#ifdef CONFIG_QETH_IPV6
+ IGNORE_PARAM_NEQ(route6.type, NO_ROUTER, NO_ROUTER,
+ "Routing options are");
+#endif
+ IGNORE_PARAM_EQ(checksum_type, HW_CHECKSUMMING,
+ QETH_CHECKSUM_DEFAULT,
+ "Checksumming options are");
+ IGNORE_PARAM_NEQ(broadcast_mode, QETH_TR_BROADCAST_ALLRINGS,
+ QETH_TR_BROADCAST_ALLRINGS,
+ "Broadcast mode options are");
+ IGNORE_PARAM_NEQ(macaddr_mode, QETH_TR_MACADDR_NONCANONICAL,
+ QETH_TR_MACADDR_NONCANONICAL,
+ "Canonical MAC addr options are");
+ IGNORE_PARAM_NEQ(fake_broadcast, 0, 0,
+ "Broadcast faking options are");
+ IGNORE_PARAM_NEQ(add_hhlen, DEFAULT_ADD_HHLEN,
+ DEFAULT_ADD_HHLEN,"Option add_hhlen is");
+ IGNORE_PARAM_NEQ(fake_ll, 0, 0,"Option fake_ll is");
+ }
+}
+
+
+static int
+qeth_set_online(struct ccwgroup_device *gdev)
+{
+ struct qeth_card *card = gdev->dev.driver_data;
+ int rc = 0;
+ enum qeth_card_states recover_flag;
+
+ BUG_ON(!card);
+ QETH_DBF_TEXT(setup ,2, "setonlin");
+ QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
+
+ qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
+ if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)){
+ PRINT_WARN("set_online of card %s interrupted by user!\n",
+ CARD_BUS_ID(card));
+ return -ERESTARTSYS;
+ }
+
+ recover_flag = card->state;
+ if ((rc = ccw_device_set_online(CARD_RDEV(card))) ||
+ (rc = ccw_device_set_online(CARD_WDEV(card))) ||
+ (rc = ccw_device_set_online(CARD_DDEV(card)))){
+ QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
+ return -EIO;
+ }
+
+ if (card->options.layer2)
+ qeth_make_parameters_consistent(card);
+
+ if ((rc = qeth_hardsetup_card(card))){
+ QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
+ goto out_remove;
+ }
+ card->state = CARD_STATE_HARDSETUP;
+
+ if (!(rc = qeth_query_ipassists(card,QETH_PROT_IPV4)))
+ rc = qeth_get_unique_id(card);
+
+ if (rc && card->options.layer2 == 0) {
+ QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
+ goto out_remove;
+ }
+ qeth_print_status_message(card);
+ if ((rc = qeth_register_netdev(card))){
+ QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
+ goto out_remove;
+ }
+ if ((rc = qeth_softsetup_card(card))){
+ QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
+ goto out_remove;
+ }
+ card->state = CARD_STATE_SOFTSETUP;
+
+ if ((rc = qeth_init_qdio_queues(card))){
+ QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
+ goto out_remove;
+ }
+/*maybe it was set offline without ifconfig down
+ * we can also use this state for recovery purposes*/
+ qeth_set_allowed_threads(card, 0xffffffff, 0);
+ if (recover_flag == CARD_STATE_RECOVER)
+ qeth_start_again(card);
+ qeth_notify_processes();
+ return 0;
+out_remove:
+ card->use_hard_stop = 1;
+ qeth_stop_card(card);
+ ccw_device_set_offline(CARD_DDEV(card));
+ ccw_device_set_offline(CARD_WDEV(card));
+ ccw_device_set_offline(CARD_RDEV(card));
+ if (recover_flag == CARD_STATE_RECOVER)
+ card->state = CARD_STATE_RECOVER;
+ else
+ card->state = CARD_STATE_DOWN;
+ return -ENODEV;
+}
+
+static struct ccw_device_id qeth_ids[] = {
+ {CCW_DEVICE(0x1731, 0x01), driver_info:QETH_CARD_TYPE_OSAE},
+ {CCW_DEVICE(0x1731, 0x05), driver_info:QETH_CARD_TYPE_IQD},
+ {},
+};
+MODULE_DEVICE_TABLE(ccw, qeth_ids);
+
+struct device *qeth_root_dev = NULL;
+
+struct ccwgroup_driver qeth_ccwgroup_driver = {
+ .owner = THIS_MODULE,
+ .name = "qeth",
+ .driver_id = 0xD8C5E3C8,
+ .probe = qeth_probe_device,
+ .remove = qeth_remove_device,
+ .set_online = qeth_set_online,
+ .set_offline = qeth_set_offline,
+};
+
+struct ccw_driver qeth_ccw_driver = {
+ .name = "qeth",
+ .ids = qeth_ids,
+ .probe = ccwgroup_probe_ccwdev,
+ .remove = ccwgroup_remove_ccwdev,
+};
+
+
+static void
+qeth_unregister_dbf_views(void)
+{
+ if (qeth_dbf_setup)
+ debug_unregister(qeth_dbf_setup);
+ if (qeth_dbf_qerr)
+ debug_unregister(qeth_dbf_qerr);
+ if (qeth_dbf_sense)
+ debug_unregister(qeth_dbf_sense);
+ if (qeth_dbf_misc)
+ debug_unregister(qeth_dbf_misc);
+ if (qeth_dbf_data)
+ debug_unregister(qeth_dbf_data);
+ if (qeth_dbf_control)
+ debug_unregister(qeth_dbf_control);
+ if (qeth_dbf_trace)
+ debug_unregister(qeth_dbf_trace);
+}
+static int
+qeth_register_dbf_views(void)
+{
+ qeth_dbf_setup = debug_register(QETH_DBF_SETUP_NAME,
+ QETH_DBF_SETUP_INDEX,
+ QETH_DBF_SETUP_NR_AREAS,
+ QETH_DBF_SETUP_LEN);
+ qeth_dbf_misc = debug_register(QETH_DBF_MISC_NAME,
+ QETH_DBF_MISC_INDEX,
+ QETH_DBF_MISC_NR_AREAS,
+ QETH_DBF_MISC_LEN);
+ qeth_dbf_data = debug_register(QETH_DBF_DATA_NAME,
+ QETH_DBF_DATA_INDEX,
+ QETH_DBF_DATA_NR_AREAS,
+ QETH_DBF_DATA_LEN);
+ qeth_dbf_control = debug_register(QETH_DBF_CONTROL_NAME,
+ QETH_DBF_CONTROL_INDEX,
+ QETH_DBF_CONTROL_NR_AREAS,
+ QETH_DBF_CONTROL_LEN);
+ qeth_dbf_sense = debug_register(QETH_DBF_SENSE_NAME,
+ QETH_DBF_SENSE_INDEX,
+ QETH_DBF_SENSE_NR_AREAS,
+ QETH_DBF_SENSE_LEN);
+ qeth_dbf_qerr = debug_register(QETH_DBF_QERR_NAME,
+ QETH_DBF_QERR_INDEX,
+ QETH_DBF_QERR_NR_AREAS,
+ QETH_DBF_QERR_LEN);
+ qeth_dbf_trace = debug_register(QETH_DBF_TRACE_NAME,
+ QETH_DBF_TRACE_INDEX,
+ QETH_DBF_TRACE_NR_AREAS,
+ QETH_DBF_TRACE_LEN);
+
+ if ((qeth_dbf_setup == NULL) || (qeth_dbf_misc == NULL) ||
+ (qeth_dbf_data == NULL) || (qeth_dbf_control == NULL) ||
+ (qeth_dbf_sense == NULL) || (qeth_dbf_qerr == NULL) ||
+ (qeth_dbf_trace == NULL)) {
+ qeth_unregister_dbf_views();
+ return -ENOMEM;
+ }
+ debug_register_view(qeth_dbf_setup, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_setup, QETH_DBF_SETUP_LEVEL);
+
+ debug_register_view(qeth_dbf_misc, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_misc, QETH_DBF_MISC_LEVEL);
+
+ debug_register_view(qeth_dbf_data, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_data, QETH_DBF_DATA_LEVEL);
+
+ debug_register_view(qeth_dbf_control, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_control, QETH_DBF_CONTROL_LEVEL);
+
+ debug_register_view(qeth_dbf_sense, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_sense, QETH_DBF_SENSE_LEVEL);
+
+ debug_register_view(qeth_dbf_qerr, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_qerr, QETH_DBF_QERR_LEVEL);
+
+ debug_register_view(qeth_dbf_trace, &debug_hex_ascii_view);
+ debug_set_level(qeth_dbf_trace, QETH_DBF_TRACE_LEVEL);
+
+ return 0;
+}
+
+#ifdef CONFIG_QETH_IPV6
+extern struct neigh_table arp_tbl;
+static struct neigh_ops *arp_direct_ops;
+static int (*qeth_old_arp_constructor) (struct neighbour *);
+
+static struct neigh_ops arp_direct_ops_template = {
+ .family = AF_INET,
+ .destructor = NULL,
+ .solicit = NULL,
+ .error_report = NULL,
+ .output = dev_queue_xmit,
+ .connected_output = dev_queue_xmit,
+ .hh_output = dev_queue_xmit,
+ .queue_xmit = dev_queue_xmit
+};
+
+static int
+qeth_arp_constructor(struct neighbour *neigh)
+{
+ struct net_device *dev = neigh->dev;
+ struct in_device *in_dev;
+ struct neigh_parms *parms;
+ struct qeth_card *card;
+
+ card = qeth_get_card_from_dev(dev);
+ if (card == NULL)
+ goto out;
+ if((card->options.layer2) ||
+ (card->dev->hard_header == qeth_fake_header))
+ goto out;
+
+ rcu_read_lock();
+ in_dev = rcu_dereference(__in_dev_get(dev));
+ if (in_dev == NULL) {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ parms = in_dev->arp_parms;
+ __neigh_parms_put(neigh->parms);
+ neigh->parms = neigh_parms_clone(parms);
+ rcu_read_unlock();
+
+ neigh->type = inet_addr_type(*(u32 *) neigh->primary_key);
+ neigh->nud_state = NUD_NOARP;
+ neigh->ops = arp_direct_ops;
+ neigh->output = neigh->ops->queue_xmit;
+ return 0;
+out:
+ return qeth_old_arp_constructor(neigh);
+}
+#endif /*CONFIG_QETH_IPV6*/
+
+/*
+ * IP address takeover related functions
+ */
+static void
+qeth_clear_ipato_list(struct qeth_card *card)
+{
+ struct qeth_ipato_entry *ipatoe, *tmp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
+ list_del(&ipatoe->entry);
+ kfree(ipatoe);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+int
+qeth_add_ipato_entry(struct qeth_card *card, struct qeth_ipato_entry *new)
+{
+ struct qeth_ipato_entry *ipatoe;
+ unsigned long flags;
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace, 2, "addipato");
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry(ipatoe, &card->ipato.entries, entry){
+ if (ipatoe->proto != new->proto)
+ continue;
+ if (!memcmp(ipatoe->addr, new->addr,
+ (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
+ (ipatoe->mask_bits == new->mask_bits)){
+ PRINT_WARN("ipato entry already exists!\n");
+ rc = -EEXIST;
+ break;
+ }
+ }
+ if (!rc) {
+ list_add_tail(&new->entry, &card->ipato.entries);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return rc;
+}
+
+void
+qeth_del_ipato_entry(struct qeth_card *card, enum qeth_prot_versions proto,
+ u8 *addr, int mask_bits)
+{
+ struct qeth_ipato_entry *ipatoe, *tmp;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace, 2, "delipato");
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry){
+ if (ipatoe->proto != proto)
+ continue;
+ if (!memcmp(ipatoe->addr, addr,
+ (proto == QETH_PROT_IPV4)? 4:16) &&
+ (ipatoe->mask_bits == mask_bits)){
+ list_del(&ipatoe->entry);
+ kfree(ipatoe);
+ }
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+static inline void
+qeth_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
+{
+ int i, j;
+ u8 octet;
+
+ for (i = 0; i < len; ++i){
+ octet = addr[i];
+ for (j = 7; j >= 0; --j){
+ bits[i*8 + j] = octet & 1;
+ octet >>= 1;
+ }
+ }
+}
+
+static int
+qeth_is_addr_covered_by_ipato(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ struct qeth_ipato_entry *ipatoe;
+ u8 addr_bits[128] = {0, };
+ u8 ipatoe_bits[128] = {0, };
+ int rc = 0;
+
+ if (!card->ipato.enabled)
+ return 0;
+
+ qeth_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
+ (addr->proto == QETH_PROT_IPV4)? 4:16);
+ list_for_each_entry(ipatoe, &card->ipato.entries, entry){
+ if (addr->proto != ipatoe->proto)
+ continue;
+ qeth_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
+ (ipatoe->proto==QETH_PROT_IPV4) ?
+ 4:16);
+ if (addr->proto == QETH_PROT_IPV4)
+ rc = !memcmp(addr_bits, ipatoe_bits,
+ min(32, ipatoe->mask_bits));
+ else
+ rc = !memcmp(addr_bits, ipatoe_bits,
+ min(128, ipatoe->mask_bits));
+ if (rc)
+ break;
+ }
+ /* invert? */
+ if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
+ rc = !rc;
+ else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
+ rc = !rc;
+
+ return rc;
+}
+
+/*
+ * VIPA related functions
+ */
+int
+qeth_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+ unsigned long flags;
+ int rc = 0;
+
+ ipaddr = qeth_get_addr_buffer(proto);
+ if (ipaddr){
+ if (proto == QETH_PROT_IPV4){
+ QETH_DBF_TEXT(trace, 2, "addvipa4");
+ memcpy(&ipaddr->u.a4.addr, addr, 4);
+ ipaddr->u.a4.mask = 0;
+#ifdef CONFIG_QETH_IPV6
+ } else if (proto == QETH_PROT_IPV6){
+ QETH_DBF_TEXT(trace, 2, "addvipa6");
+ memcpy(&ipaddr->u.a6.addr, addr, 16);
+ ipaddr->u.a6.pfxlen = 0;
+#endif
+ }
+ ipaddr->type = QETH_IP_TYPE_VIPA;
+ ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
+ ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
+ } else
+ return -ENOMEM;
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
+ __qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
+ rc = -EEXIST;
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ if (rc){
+ PRINT_WARN("Cannot add VIPA. Address already exists!\n");
+ return rc;
+ }
+ if (!qeth_add_ip(card, ipaddr))
+ kfree(ipaddr);
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+ return rc;
+}
+
+void
+qeth_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+
+ ipaddr = qeth_get_addr_buffer(proto);
+ if (ipaddr){
+ if (proto == QETH_PROT_IPV4){
+ QETH_DBF_TEXT(trace, 2, "delvipa4");
+ memcpy(&ipaddr->u.a4.addr, addr, 4);
+ ipaddr->u.a4.mask = 0;
+#ifdef CONFIG_QETH_IPV6
+ } else if (proto == QETH_PROT_IPV6){
+ QETH_DBF_TEXT(trace, 2, "delvipa6");
+ memcpy(&ipaddr->u.a6.addr, addr, 16);
+ ipaddr->u.a6.pfxlen = 0;
+#endif
+ }
+ ipaddr->type = QETH_IP_TYPE_VIPA;
+ } else
+ return;
+ if (!qeth_delete_ip(card, ipaddr))
+ kfree(ipaddr);
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+}
+
+/*
+ * proxy ARP related functions
+ */
+int
+qeth_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+ unsigned long flags;
+ int rc = 0;
+
+ ipaddr = qeth_get_addr_buffer(proto);
+ if (ipaddr){
+ if (proto == QETH_PROT_IPV4){
+ QETH_DBF_TEXT(trace, 2, "addrxip4");
+ memcpy(&ipaddr->u.a4.addr, addr, 4);
+ ipaddr->u.a4.mask = 0;
+#ifdef CONFIG_QETH_IPV6
+ } else if (proto == QETH_PROT_IPV6){
+ QETH_DBF_TEXT(trace, 2, "addrxip6");
+ memcpy(&ipaddr->u.a6.addr, addr, 16);
+ ipaddr->u.a6.pfxlen = 0;
+#endif
+ }
+ ipaddr->type = QETH_IP_TYPE_RXIP;
+ ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
+ ipaddr->del_flags = 0;
+ } else
+ return -ENOMEM;
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
+ __qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
+ rc = -EEXIST;
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ if (rc){
+ PRINT_WARN("Cannot add RXIP. Address already exists!\n");
+ return rc;
+ }
+ if (!qeth_add_ip(card, ipaddr))
+ kfree(ipaddr);
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+ return 0;
+}
+
+void
+qeth_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+
+ ipaddr = qeth_get_addr_buffer(proto);
+ if (ipaddr){
+ if (proto == QETH_PROT_IPV4){
+ QETH_DBF_TEXT(trace, 2, "addrxip4");
+ memcpy(&ipaddr->u.a4.addr, addr, 4);
+ ipaddr->u.a4.mask = 0;
+#ifdef CONFIG_QETH_IPV6
+ } else if (proto == QETH_PROT_IPV6){
+ QETH_DBF_TEXT(trace, 2, "addrxip6");
+ memcpy(&ipaddr->u.a6.addr, addr, 16);
+ ipaddr->u.a6.pfxlen = 0;
+#endif
+ }
+ ipaddr->type = QETH_IP_TYPE_RXIP;
+ } else
+ return;
+ if (!qeth_delete_ip(card, ipaddr))
+ kfree(ipaddr);
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+}
+
+/**
+ * IP event handler
+ */
+static int
+qeth_ip_event(struct notifier_block *this,
+ unsigned long event,void *ptr)
+{
+ struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+ struct net_device *dev =(struct net_device *) ifa->ifa_dev->dev;
+ struct qeth_ipaddr *addr;
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace,3,"ipevent");
+ card = qeth_get_card_from_dev(dev);
+ if (!card)
+ return NOTIFY_DONE;
+ if (card->options.layer2)
+ return NOTIFY_DONE;
+
+ addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
+ if (addr != NULL) {
+ addr->u.a4.addr = ifa->ifa_address;
+ addr->u.a4.mask = ifa->ifa_mask;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ } else
+ goto out;
+
+ switch(event) {
+ case NETDEV_UP:
+ if (!qeth_add_ip(card, addr))
+ kfree(addr);
+ break;
+ case NETDEV_DOWN:
+ if (!qeth_delete_ip(card, addr))
+ kfree(addr);
+ break;
+ default:
+ break;
+ }
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block qeth_ip_notifier = {
+ qeth_ip_event,
+ 0
+};
+
+#ifdef CONFIG_QETH_IPV6
+/**
+ * IPv6 event handler
+ */
+static int
+qeth_ip6_event(struct notifier_block *this,
+ unsigned long event,void *ptr)
+{
+
+ struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
+ struct net_device *dev = (struct net_device *)ifa->idev->dev;
+ struct qeth_ipaddr *addr;
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT(trace,3,"ip6event");
+
+ card = qeth_get_card_from_dev(dev);
+ if (!card)
+ return NOTIFY_DONE;
+ if (!qeth_is_supported(card, IPA_IPV6))
+ return NOTIFY_DONE;
+
+ addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
+ if (addr != NULL) {
+ memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
+ addr->u.a6.pfxlen = ifa->prefix_len;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ } else
+ goto out;
+
+ switch(event) {
+ case NETDEV_UP:
+ if (!qeth_add_ip(card, addr))
+ kfree(addr);
+ break;
+ case NETDEV_DOWN:
+ if (!qeth_delete_ip(card, addr))
+ kfree(addr);
+ break;
+ default:
+ break;
+ }
+ if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
+ schedule_work(&card->kernel_thread_starter);
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block qeth_ip6_notifier = {
+ qeth_ip6_event,
+ 0
+};
+#endif
+
+static int
+qeth_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+
+ struct device *entry;
+ struct qeth_card *card;
+
+ down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+ list_for_each_entry(entry, &qeth_ccwgroup_driver.driver.devices,
+ driver_list) {
+ card = (struct qeth_card *) entry->driver_data;
+ qeth_clear_ip_list(card, 0, 0);
+ qeth_qdio_clear_card(card, 0);
+ }
+ up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+ return NOTIFY_DONE;
+}
+
+
+static struct notifier_block qeth_reboot_notifier = {
+ qeth_reboot_event,
+ 0
+};
+
+static int
+qeth_register_notifiers(void)
+{
+ int r;
+
+ QETH_DBF_TEXT(trace,5,"regnotif");
+ if ((r = register_reboot_notifier(&qeth_reboot_notifier)))
+ return r;
+ if ((r = register_inetaddr_notifier(&qeth_ip_notifier)))
+ goto out_reboot;
+#ifdef CONFIG_QETH_IPV6
+ if ((r = register_inet6addr_notifier(&qeth_ip6_notifier)))
+ goto out_ipv4;
+#endif
+ return 0;
+
+#ifdef CONFIG_QETH_IPV6
+out_ipv4:
+ unregister_inetaddr_notifier(&qeth_ip_notifier);
+#endif
+out_reboot:
+ unregister_reboot_notifier(&qeth_reboot_notifier);
+ return r;
+}
+
+/**
+ * unregister all event notifiers
+ */
+static void
+qeth_unregister_notifiers(void)
+{
+
+ QETH_DBF_TEXT(trace,5,"unregnot");
+ BUG_ON(unregister_reboot_notifier(&qeth_reboot_notifier));
+ BUG_ON(unregister_inetaddr_notifier(&qeth_ip_notifier));
+#ifdef CONFIG_QETH_IPV6
+ BUG_ON(unregister_inet6addr_notifier(&qeth_ip6_notifier));
+#endif /* QETH_IPV6 */
+
+}
+
+#ifdef CONFIG_QETH_IPV6
+static int
+qeth_ipv6_init(void)
+{
+ qeth_old_arp_constructor = arp_tbl.constructor;
+ write_lock(&arp_tbl.lock);
+ arp_tbl.constructor = qeth_arp_constructor;
+ write_unlock(&arp_tbl.lock);
+
+ arp_direct_ops = (struct neigh_ops*)
+ kmalloc(sizeof(struct neigh_ops), GFP_KERNEL);
+ if (!arp_direct_ops)
+ return -ENOMEM;
+
+ memcpy(arp_direct_ops, &arp_direct_ops_template,
+ sizeof(struct neigh_ops));
+
+ return 0;
+}
+
+static void
+qeth_ipv6_uninit(void)
+{
+ write_lock(&arp_tbl.lock);
+ arp_tbl.constructor = qeth_old_arp_constructor;
+ write_unlock(&arp_tbl.lock);
+ kfree(arp_direct_ops);
+}
+#endif /* CONFIG_QETH_IPV6 */
+
+static void
+qeth_sysfs_unregister(void)
+{
+ qeth_remove_driver_attributes();
+ ccw_driver_unregister(&qeth_ccw_driver);
+ ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
+ s390_root_dev_unregister(qeth_root_dev);
+}
+/**
+ * register qeth at sysfs
+ */
+static int
+qeth_sysfs_register(void)
+{
+ int rc=0;
+
+ rc = ccwgroup_driver_register(&qeth_ccwgroup_driver);
+ if (rc)
+ return rc;
+ rc = ccw_driver_register(&qeth_ccw_driver);
+ if (rc)
+ return rc;
+ rc = qeth_create_driver_attributes();
+ if (rc)
+ return rc;
+ qeth_root_dev = s390_root_dev_register("qeth");
+ if (IS_ERR(qeth_root_dev)) {
+ rc = PTR_ERR(qeth_root_dev);
+ return rc;
+ }
+ return 0;
+}
+
+/***
+ * init function
+ */
+static int __init
+qeth_init(void)
+{
+ int rc=0;
+
+ qeth_eyecatcher();
+ PRINT_INFO("loading %s (%s/%s/%s/%s/%s/%s/%s %s %s)\n",
+ version, VERSION_QETH_C, VERSION_QETH_H,
+ VERSION_QETH_MPC_H, VERSION_QETH_MPC_C,
+ VERSION_QETH_FS_H, VERSION_QETH_PROC_C,
+ VERSION_QETH_SYS_C, QETH_VERSION_IPV6,
+ QETH_VERSION_VLAN);
+
+ INIT_LIST_HEAD(&qeth_card_list.list);
+ INIT_LIST_HEAD(&qeth_notify_list);
+ spin_lock_init(&qeth_notify_lock);
+ rwlock_init(&qeth_card_list.rwlock);
+
+ if (qeth_register_dbf_views())
+ goto out_err;
+ if (qeth_sysfs_register())
+ goto out_sysfs;
+
+#ifdef CONFIG_QETH_IPV6
+ if (qeth_ipv6_init()) {
+ PRINT_ERR("Out of memory during ipv6 init.\n");
+ goto out_sysfs;
+ }
+#endif /* QETH_IPV6 */
+ if (qeth_register_notifiers())
+ goto out_ipv6;
+ if (qeth_create_procfs_entries())
+ goto out_notifiers;
+
+ return rc;
+
+out_notifiers:
+ qeth_unregister_notifiers();
+out_ipv6:
+#ifdef CONFIG_QETH_IPV6
+ qeth_ipv6_uninit();
+#endif /* QETH_IPV6 */
+out_sysfs:
+ qeth_sysfs_unregister();
+ qeth_unregister_dbf_views();
+out_err:
+ PRINT_ERR("Initialization failed");
+ return rc;
+}
+
+static void
+__exit qeth_exit(void)
+{
+ struct qeth_card *card, *tmp;
+ unsigned long flags;
+
+ QETH_DBF_TEXT(trace,1, "cleanup.");
+
+ /*
+ * Weed would not need to clean up our devices here, because the
+ * common device layer calls qeth_remove_device for each device
+ * as soon as we unregister our driver (done in qeth_sysfs_unregister).
+ * But we do cleanup here so we can do a "soft" shutdown of our cards.
+ * qeth_remove_device called by the common device layer would otherwise
+ * do a "hard" shutdown (card->use_hard_stop is set to one in
+ * qeth_remove_device).
+ */
+again:
+ read_lock_irqsave(&qeth_card_list.rwlock, flags);
+ list_for_each_entry_safe(card, tmp, &qeth_card_list.list, list){
+ read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
+ qeth_set_offline(card->gdev);
+ qeth_remove_device(card->gdev);
+ goto again;
+ }
+ read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
+#ifdef CONFIG_QETH_IPV6
+ qeth_ipv6_uninit();
+#endif
+ qeth_unregister_notifiers();
+ qeth_remove_procfs_entries();
+ qeth_sysfs_unregister();
+ qeth_unregister_dbf_views();
+ printk("qeth: removed\n");
+}
+
+EXPORT_SYMBOL(qeth_eyecatcher);
+module_init(qeth_init);
+module_exit(qeth_exit);
+MODULE_AUTHOR("Frank Pavlic <pavlic@de.ibm.com>");
+MODULE_DESCRIPTION("Linux on zSeries OSA Express and HiperSockets support\n" \
+ "Copyright 2000,2003 IBM Corporation\n");
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/s390/net/qeth_mpc.c b/drivers/s390/net/qeth_mpc.c
new file mode 100644
index 0000000..f685ecc
--- /dev/null
+++ b/drivers/s390/net/qeth_mpc.c
@@ -0,0 +1,168 @@
+/*
+ * linux/drivers/s390/net/qeth_mpc.c
+ *
+ * Linux on zSeries OSA Express and HiperSockets support
+ *
+ * Copyright 2000,2003 IBM Corporation
+ * Author(s): Frank Pavlic <pavlic@de.ibm.com>
+ * Thomas Spatzier <tspat@de.ibm.com>
+ *
+ */
+#include <asm/cio.h>
+#include "qeth_mpc.h"
+
+const char *VERSION_QETH_MPC_C = "$Revision: 1.11 $";
+
+unsigned char IDX_ACTIVATE_READ[]={
+ 0x00,0x00,0x80,0x00, 0x00,0x00,0x00,0x00,
+ 0x19,0x01,0x01,0x80, 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0xc8,0xc1,
+ 0xd3,0xd3,0xd6,0xd3, 0xc5,0x40,0x00,0x00,
+ 0x00,0x00
+};
+
+unsigned char IDX_ACTIVATE_WRITE[]={
+ 0x00,0x00,0x80,0x00, 0x00,0x00,0x00,0x00,
+ 0x15,0x01,0x01,0x80, 0x00,0x00,0x00,0x00,
+ 0xff,0xff,0x00,0x00, 0x00,0x00,0xc8,0xc1,
+ 0xd3,0xd3,0xd6,0xd3, 0xc5,0x40,0x00,0x00,
+ 0x00,0x00
+};
+
+unsigned char CM_ENABLE[]={
+ 0x00,0xe0,0x00,0x00, 0x00,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x14, 0x00,0x00,0x00,0x63,
+ 0x10,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x00,
+ 0x81,0x7e,0x00,0x01, 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x24,0x00,0x23,
+ 0x00,0x00,0x23,0x05, 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
+ 0x01,0x00,0x00,0x23, 0x00,0x00,0x00,0x40,
+ 0x00,0x0c,0x41,0x02, 0x00,0x17,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x0b,0x04,0x01,
+ 0x7e,0x04,0x05,0x00, 0x01,0x01,0x0f,
+ 0x00,
+ 0x0c,0x04,0x02,0xff, 0xff,0xff,0xff,0xff,
+ 0xff,0xff,0xff
+};
+
+unsigned char CM_SETUP[]={
+ 0x00,0xe0,0x00,0x00, 0x00,0x00,0x00,0x02,
+ 0x00,0x00,0x00,0x14, 0x00,0x00,0x00,0x64,
+ 0x10,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x00,
+ 0x81,0x7e,0x00,0x01, 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x24,0x00,0x24,
+ 0x00,0x00,0x24,0x05, 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
+ 0x01,0x00,0x00,0x24, 0x00,0x00,0x00,0x40,
+ 0x00,0x0c,0x41,0x04, 0x00,0x18,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x09,0x04,0x04,
+ 0x05,0x00,0x01,0x01, 0x11,
+ 0x00,0x09,0x04,
+ 0x05,0x05,0x00,0x00, 0x00,0x00,
+ 0x00,0x06,
+ 0x04,0x06,0xc8,0x00
+};
+
+unsigned char ULP_ENABLE[]={
+ 0x00,0xe0,0x00,0x00, 0x00,0x00,0x00,0x03,
+ 0x00,0x00,0x00,0x14, 0x00,0x00,0x00,0x6b,
+ 0x10,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x00,
+ 0x41,0x7e,0x00,0x01, 0x00,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x00, 0x00,0x24,0x00,0x2b,
+ 0x00,0x00,0x2b,0x05, 0x20,0x01,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
+ 0x01,0x00,0x00,0x2b, 0x00,0x00,0x00,0x40,
+ 0x00,0x0c,0x41,0x02, 0x00,0x1f,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x0b,0x04,0x01,
+ 0x03,0x04,0x05,0x00, 0x01,0x01,0x12,
+ 0x00,
+ 0x14,0x04,0x0a,0x00, 0x20,0x00,0x00,0xff,
+ 0xff,0x00,0x08,0xc8, 0xe8,0xc4,0xf1,0xc7,
+ 0xf1,0x00,0x00
+};
+
+unsigned char ULP_SETUP[]={
+ 0x00,0xe0,0x00,0x00, 0x00,0x00,0x00,0x04,
+ 0x00,0x00,0x00,0x14, 0x00,0x00,0x00,0x6c,
+ 0x10,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x00,
+ 0x41,0x7e,0x00,0x01, 0x00,0x00,0x00,0x02,
+ 0x00,0x00,0x00,0x01, 0x00,0x24,0x00,0x2c,
+ 0x00,0x00,0x2c,0x05, 0x20,0x01,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
+ 0x01,0x00,0x00,0x2c, 0x00,0x00,0x00,0x40,
+ 0x00,0x0c,0x41,0x04, 0x00,0x20,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x09,0x04,0x04,
+ 0x05,0x00,0x01,0x01, 0x14,
+ 0x00,0x09,0x04,
+ 0x05,0x05,0x30,0x01, 0x00,0x00,
+ 0x00,0x06,
+ 0x04,0x06,0x40,0x00,
+ 0x00,0x08,0x04,0x0b,
+ 0x00,0x00,0x00,0x00
+};
+
+unsigned char DM_ACT[]={
+ 0x00,0xe0,0x00,0x00, 0x00,0x00,0x00,0x05,
+ 0x00,0x00,0x00,0x14, 0x00,0x00,0x00,0x55,
+ 0x10,0x00,0x00,0x01,
+ 0x00,0x00,0x00,0x00,
+ 0x41,0x7e,0x00,0x01, 0x00,0x00,0x00,0x03,
+ 0x00,0x00,0x00,0x02, 0x00,0x24,0x00,0x15,
+ 0x00,0x00,0x2c,0x05, 0x20,0x01,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
+ 0x01,0x00,0x00,0x15, 0x00,0x00,0x00,0x40,
+ 0x00,0x0c,0x43,0x60, 0x00,0x09,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x09,0x04,0x04,
+ 0x05,0x40,0x01,0x01, 0x00
+};
+
+unsigned char IPA_PDU_HEADER[]={
+ 0x00,0xe0,0x00,0x00, 0x77,0x77,0x77,0x77,
+ 0x00,0x00,0x00,0x14, 0x00,0x00,
+ (IPA_PDU_HEADER_SIZE+sizeof(struct qeth_ipa_cmd))/256,
+ (IPA_PDU_HEADER_SIZE+sizeof(struct qeth_ipa_cmd))%256,
+ 0x10,0x00,0x00,0x01, 0x00,0x00,0x00,0x00,
+ 0xc1,0x03,0x00,0x01, 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00, 0x00,0x24,
+ sizeof(struct qeth_ipa_cmd)/256,
+ sizeof(struct qeth_ipa_cmd)%256,
+ 0x00,
+ sizeof(struct qeth_ipa_cmd)/256,
+ sizeof(struct qeth_ipa_cmd),0x05, 0x77,0x77,0x77,0x77,
+ 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
+ 0x01,0x00,
+ sizeof(struct qeth_ipa_cmd)/256,
+ sizeof(struct qeth_ipa_cmd)%256,
+ 0x00,0x00,0x00,0x40,
+};
+
+unsigned char WRITE_CCW[]={
+ 0x01,CCW_FLAG_SLI,0,0,
+ 0,0,0,0
+};
+
+unsigned char READ_CCW[]={
+ 0x02,CCW_FLAG_SLI,0,0,
+ 0,0,0,0
+};
+
+
+
+
+
+
+
+
+
+
+
diff --git a/drivers/s390/net/qeth_mpc.h b/drivers/s390/net/qeth_mpc.h
new file mode 100644
index 0000000..3d916b5
--- /dev/null
+++ b/drivers/s390/net/qeth_mpc.h
@@ -0,0 +1,538 @@
+/*
+ * linux/drivers/s390/net/qeth_mpc.h
+ *
+ * Linux on zSeries OSA Express and HiperSockets support
+ *
+ * Copyright 2000,2003 IBM Corporation
+ * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
+ * Thomas Spatzier <tspat@de.ibm.com>
+ * Frank Pavlic <pavlic@de.ibm.com>
+ *
+ */
+#ifndef __QETH_MPC_H__
+#define __QETH_MPC_H__
+
+#include <asm/qeth.h>
+
+#define VERSION_QETH_MPC_H "$Revision: 1.43 $"
+
+extern const char *VERSION_QETH_MPC_C;
+
+#define IPA_PDU_HEADER_SIZE 0x40
+#define QETH_IPA_PDU_LEN_TOTAL(buffer) (buffer+0x0e)
+#define QETH_IPA_PDU_LEN_PDU1(buffer) (buffer+0x26)
+#define QETH_IPA_PDU_LEN_PDU2(buffer) (buffer+0x2a)
+#define QETH_IPA_PDU_LEN_PDU3(buffer) (buffer+0x3a)
+
+extern unsigned char IPA_PDU_HEADER[];
+#define QETH_IPA_CMD_DEST_ADDR(buffer) (buffer+0x2c)
+
+#define IPA_CMD_LENGTH (IPA_PDU_HEADER_SIZE + sizeof(struct qeth_ipa_cmd))
+
+#define QETH_SEQ_NO_LENGTH 4
+#define QETH_MPC_TOKEN_LENGTH 4
+#define QETH_MCL_LENGTH 4
+#define OSA_ADDR_LEN 6
+
+#define QETH_TIMEOUT (10 * HZ)
+#define QETH_IPA_TIMEOUT (45 * HZ)
+#define QETH_IDX_COMMAND_SEQNO 0xffff0000
+#define SR_INFO_LEN 16
+
+#define QETH_CLEAR_CHANNEL_PARM -10
+#define QETH_HALT_CHANNEL_PARM -11
+
+/*****************************************************************************/
+/* IP Assist related definitions */
+/*****************************************************************************/
+#define IPA_CMD_INITIATOR_HOST 0x00
+#define IPA_CMD_INITIATOR_HYDRA 0x01
+#define IPA_CMD_PRIM_VERSION_NO 0x01
+
+enum qeth_card_types {
+ QETH_CARD_TYPE_UNKNOWN = 0,
+ QETH_CARD_TYPE_OSAE = 10,
+ QETH_CARD_TYPE_IQD = 1234,
+};
+
+#define QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE 0x18
+/* only the first two bytes are looked at in qeth_get_cardname_short */
+enum qeth_link_types {
+ QETH_LINK_TYPE_FAST_ETH = 0x01,
+ QETH_LINK_TYPE_HSTR = 0x02,
+ QETH_LINK_TYPE_GBIT_ETH = 0x03,
+ QETH_LINK_TYPE_10GBIT_ETH = 0x10,
+ QETH_LINK_TYPE_LANE_ETH100 = 0x81,
+ QETH_LINK_TYPE_LANE_TR = 0x82,
+ QETH_LINK_TYPE_LANE_ETH1000 = 0x83,
+ QETH_LINK_TYPE_LANE = 0x88,
+ QETH_LINK_TYPE_ATM_NATIVE = 0x90,
+};
+
+enum qeth_tr_macaddr_modes {
+ QETH_TR_MACADDR_NONCANONICAL = 0,
+ QETH_TR_MACADDR_CANONICAL = 1,
+};
+
+enum qeth_tr_broadcast_modes {
+ QETH_TR_BROADCAST_ALLRINGS = 0,
+ QETH_TR_BROADCAST_LOCAL = 1,
+};
+
+/* these values match CHECKSUM_* in include/linux/skbuff.h */
+enum qeth_checksum_types {
+ SW_CHECKSUMMING = 0, /* TODO: set to bit flag used in IPA Command */
+ HW_CHECKSUMMING = 1,
+ NO_CHECKSUMMING = 2,
+};
+#define QETH_CHECKSUM_DEFAULT SW_CHECKSUMMING
+
+/*
+ * Routing stuff
+ */
+#define RESET_ROUTING_FLAG 0x10 /* indicate that routing type shall be set */
+enum qeth_routing_types {
+ NO_ROUTER = 0, /* TODO: set to bit flag used in IPA Command */
+ PRIMARY_ROUTER = 1,
+ SECONDARY_ROUTER = 2,
+ MULTICAST_ROUTER = 3,
+ PRIMARY_CONNECTOR = 4,
+ SECONDARY_CONNECTOR = 5,
+};
+
+
+/* IPA Commands */
+enum qeth_ipa_cmds {
+ IPA_CMD_STARTLAN = 0x01,
+ IPA_CMD_STOPLAN = 0x02,
+ IPA_CMD_SETVMAC = 0x21,
+ IPA_CMD_DELVMAC = 0x22,
+ IPA_CMD_SETGMAC = 0x23,
+ IPA_CMD_DELGMAC = 0x24,
+ IPA_CMD_SETVLAN = 0x25,
+ IPA_CMD_DELVLAN = 0x26,
+ IPA_CMD_SETIP = 0xb1,
+ IPA_CMD_DELIP = 0xb7,
+ IPA_CMD_QIPASSIST = 0xb2,
+ IPA_CMD_SETASSPARMS = 0xb3,
+ IPA_CMD_SETIPM = 0xb4,
+ IPA_CMD_DELIPM = 0xb5,
+ IPA_CMD_SETRTG = 0xb6,
+ IPA_CMD_SETADAPTERPARMS = 0xb8,
+ IPA_CMD_IPFRAME = 0xb9,
+ IPA_CMD_ADD_ADDR_ENTRY = 0xc1,
+ IPA_CMD_DELETE_ADDR_ENTRY = 0xc2,
+ IPA_CMD_CREATE_ADDR = 0xc3,
+ IPA_CMD_DESTROY_ADDR = 0xc4,
+ IPA_CMD_REGISTER_LOCAL_ADDR = 0xd1,
+ IPA_CMD_UNREGISTER_LOCAL_ADDR = 0xd2,
+};
+
+enum qeth_ip_ass_cmds {
+ IPA_CMD_ASS_START = 0x0001,
+ IPA_CMD_ASS_STOP = 0x0002,
+ IPA_CMD_ASS_CONFIGURE = 0x0003,
+ IPA_CMD_ASS_ENABLE = 0x0004,
+};
+
+enum qeth_arp_process_subcmds {
+ IPA_CMD_ASS_ARP_SET_NO_ENTRIES = 0x0003,
+ IPA_CMD_ASS_ARP_QUERY_CACHE = 0x0004,
+ IPA_CMD_ASS_ARP_ADD_ENTRY = 0x0005,
+ IPA_CMD_ASS_ARP_REMOVE_ENTRY = 0x0006,
+ IPA_CMD_ASS_ARP_FLUSH_CACHE = 0x0007,
+ IPA_CMD_ASS_ARP_QUERY_INFO = 0x0104,
+ IPA_CMD_ASS_ARP_QUERY_STATS = 0x0204,
+};
+
+/* Return Codes for IPA Commands */
+enum qeth_ipa_return_codes {
+ IPA_RC_SUCCESS = 0x0000,
+ IPA_RC_NOTSUPP = 0x0001,
+ IPA_RC_NO_ACCESS = 0x0002,
+ IPA_RC_FAILED = 0x0003,
+ IPA_RC_DATA_MISMATCH = 0xe001,
+ IPA_RC_INVALID_LAN_TYPE = 0xe003,
+ IPA_RC_INVALID_LAN_NO = 0xe004,
+ IPA_RC_IPADDR_ALREADY_REG = 0xe005,
+ IPA_RC_IPADDR_TABLE_FULL = 0xe006,
+ IPA_RC_IPADDR_ALREADY_USED = 0xe00a,
+ IPA_RC_ASSNO_NOT_SUPP = 0xe00d,
+ IPA_RC_ASSCMD_START_FAILED = 0xe00e,
+ IPA_RC_ASSCMD_PART_SUCCESS = 0xe00f,
+ IPA_RC_IPADDR_NOT_DEFINED = 0xe010,
+ IPA_RC_LAN_OFFLINE = 0xe080,
+};
+
+/* IPA function flags; each flag marks availability of respective function */
+enum qeth_ipa_funcs {
+ IPA_ARP_PROCESSING = 0x00000001L,
+ IPA_INBOUND_CHECKSUM = 0x00000002L,
+ IPA_OUTBOUND_CHECKSUM = 0x00000004L,
+ IPA_IP_FRAGMENTATION = 0x00000008L,
+ IPA_FILTERING = 0x00000010L,
+ IPA_IPV6 = 0x00000020L,
+ IPA_MULTICASTING = 0x00000040L,
+ IPA_IP_REASSEMBLY = 0x00000080L,
+ IPA_QUERY_ARP_COUNTERS = 0x00000100L,
+ IPA_QUERY_ARP_ADDR_INFO = 0x00000200L,
+ IPA_SETADAPTERPARMS = 0x00000400L,
+ IPA_VLAN_PRIO = 0x00000800L,
+ IPA_PASSTHRU = 0x00001000L,
+ IPA_FULL_VLAN = 0x00004000L,
+ IPA_SOURCE_MAC = 0x00010000L,
+ IPA_OSA_MC_ROUTER = 0x00020000L,
+ IPA_QUERY_ARP_ASSIST = 0x00040000L,
+ IPA_INBOUND_TSO = 0x00080000L,
+ IPA_OUTBOUND_TSO = 0x00100000L,
+};
+
+/* SETIP/DELIP IPA Command: ***************************************************/
+enum qeth_ipa_setdelip_flags {
+ QETH_IPA_SETDELIP_DEFAULT = 0x00L, /* default */
+ QETH_IPA_SETIP_VIPA_FLAG = 0x01L, /* no grat. ARP */
+ QETH_IPA_SETIP_TAKEOVER_FLAG = 0x02L, /* nofail on grat. ARP */
+ QETH_IPA_DELIP_ADDR_2_B_TAKEN_OVER = 0x20L,
+ QETH_IPA_DELIP_VIPA_FLAG = 0x40L,
+ QETH_IPA_DELIP_ADDR_NEEDS_SETIP = 0x80L,
+};
+
+/* SETADAPTER IPA Command: ****************************************************/
+enum qeth_ipa_setadp_cmd {
+ IPA_SETADP_QUERY_COMMANDS_SUPPORTED = 0x01,
+ IPA_SETADP_ALTER_MAC_ADDRESS = 0x02,
+ IPA_SETADP_ADD_DELETE_GROUP_ADDRESS = 0x04,
+ IPA_SETADP_ADD_DELETE_FUNCTIONAL_ADDR = 0x08,
+ IPA_SETADP_SET_ADDRESSING_MODE = 0x10,
+ IPA_SETADP_SET_CONFIG_PARMS = 0x20,
+ IPA_SETADP_SET_CONFIG_PARMS_EXTENDED = 0x40,
+ IPA_SETADP_SET_BROADCAST_MODE = 0x80,
+ IPA_SETADP_SEND_OSA_MESSAGE = 0x0100,
+ IPA_SETADP_SET_SNMP_CONTROL = 0x0200,
+ IPA_SETADP_READ_SNMP_PARMS = 0x0400,
+ IPA_SETADP_WRITE_SNMP_PARMS = 0x0800,
+ IPA_SETADP_QUERY_CARD_INFO = 0x1000,
+};
+enum qeth_ipa_mac_ops {
+ CHANGE_ADDR_READ_MAC = 0,
+ CHANGE_ADDR_REPLACE_MAC = 1,
+ CHANGE_ADDR_ADD_MAC = 2,
+ CHANGE_ADDR_DEL_MAC = 4,
+ CHANGE_ADDR_RESET_MAC = 8,
+};
+enum qeth_ipa_addr_ops {
+ CHANGE_ADDR_READ_ADDR = 0,
+ CHANGE_ADDR_ADD_ADDR = 1,
+ CHANGE_ADDR_DEL_ADDR = 2,
+ CHANGE_ADDR_FLUSH_ADDR_TABLE = 4,
+
+
+};
+/* (SET)DELIP(M) IPA stuff ***************************************************/
+struct qeth_ipacmd_setdelip4 {
+ __u8 ip_addr[4];
+ __u8 mask[4];
+ __u32 flags;
+} __attribute__ ((packed));
+
+struct qeth_ipacmd_setdelip6 {
+ __u8 ip_addr[16];
+ __u8 mask[16];
+ __u32 flags;
+} __attribute__ ((packed));
+
+struct qeth_ipacmd_setdelipm {
+ __u8 mac[6];
+ __u8 padding[2];
+ __u8 ip6[12];
+ __u8 ip4[4];
+} __attribute__ ((packed));
+
+struct qeth_ipacmd_layer2setdelmac {
+ __u32 mac_length;
+ __u8 mac[6];
+} __attribute__ ((packed));
+
+struct qeth_ipacmd_layer2setdelvlan {
+ __u16 vlan_id;
+} __attribute__ ((packed));
+
+
+struct qeth_ipacmd_setassparms_hdr {
+ __u32 assist_no;
+ __u16 length;
+ __u16 command_code;
+ __u16 return_code;
+ __u8 number_of_replies;
+ __u8 seq_no;
+} __attribute__((packed));
+
+struct qeth_arp_query_data {
+ __u16 request_bits;
+ __u16 reply_bits;
+ __u32 no_entries;
+ char data;
+} __attribute__((packed));
+
+/* used as parameter for arp_query reply */
+struct qeth_arp_query_info {
+ __u32 udata_len;
+ __u16 mask_bits;
+ __u32 udata_offset;
+ __u32 no_entries;
+ char *udata;
+};
+
+/* SETASSPARMS IPA Command: */
+struct qeth_ipacmd_setassparms {
+ struct qeth_ipacmd_setassparms_hdr hdr;
+ union {
+ __u32 flags_32bit;
+ struct qeth_arp_cache_entry add_arp_entry;
+ struct qeth_arp_query_data query_arp;
+ __u8 ip[16];
+ } data;
+} __attribute__ ((packed));
+
+
+/* SETRTG IPA Command: ****************************************************/
+struct qeth_set_routing {
+ __u8 type;
+};
+
+/* SETADAPTERPARMS IPA Command: *******************************************/
+struct qeth_query_cmds_supp {
+ __u32 no_lantypes_supp;
+ __u8 lan_type;
+ __u8 reserved1[3];
+ __u32 supported_cmds;
+ __u8 reserved2[8];
+} __attribute__ ((packed));
+
+struct qeth_change_addr {
+ __u32 cmd;
+ __u32 addr_size;
+ __u32 no_macs;
+ __u8 addr[OSA_ADDR_LEN];
+} __attribute__ ((packed));
+
+
+struct qeth_snmp_cmd {
+ __u8 token[16];
+ __u32 request;
+ __u32 interface;
+ __u32 returncode;
+ __u32 firmwarelevel;
+ __u32 seqno;
+ __u8 data;
+} __attribute__ ((packed));
+
+struct qeth_snmp_ureq_hdr {
+ __u32 data_len;
+ __u32 req_len;
+ __u32 reserved1;
+ __u32 reserved2;
+} __attribute__ ((packed));
+
+struct qeth_snmp_ureq {
+ struct qeth_snmp_ureq_hdr hdr;
+ struct qeth_snmp_cmd cmd;
+} __attribute__((packed));
+
+struct qeth_ipacmd_setadpparms_hdr {
+ __u32 supp_hw_cmds;
+ __u32 reserved1;
+ __u16 cmdlength;
+ __u16 reserved2;
+ __u32 command_code;
+ __u16 return_code;
+ __u8 used_total;
+ __u8 seq_no;
+ __u32 reserved3;
+} __attribute__ ((packed));
+
+struct qeth_ipacmd_setadpparms {
+ struct qeth_ipacmd_setadpparms_hdr hdr;
+ union {
+ struct qeth_query_cmds_supp query_cmds_supp;
+ struct qeth_change_addr change_addr;
+ struct qeth_snmp_cmd snmp;
+ __u32 mode;
+ } data;
+} __attribute__ ((packed));
+
+/* IPFRAME IPA Command: ***************************************************/
+/* TODO: define in analogy to commands define above */
+
+/* ADD_ADDR_ENTRY IPA Command: ********************************************/
+/* TODO: define in analogy to commands define above */
+
+/* DELETE_ADDR_ENTRY IPA Command: *****************************************/
+/* TODO: define in analogy to commands define above */
+
+/* CREATE_ADDR IPA Command: ***********************************************/
+struct qeth_create_destroy_address {
+ __u8 unique_id[8];
+} __attribute__ ((packed));
+
+/* REGISTER_LOCAL_ADDR IPA Command: ***************************************/
+/* TODO: define in analogy to commands define above */
+
+/* UNREGISTER_LOCAL_ADDR IPA Command: *************************************/
+/* TODO: define in analogy to commands define above */
+
+/* Header for each IPA command */
+struct qeth_ipacmd_hdr {
+ __u8 command;
+ __u8 initiator;
+ __u16 seqno;
+ __u16 return_code;
+ __u8 adapter_type;
+ __u8 rel_adapter_no;
+ __u8 prim_version_no;
+ __u8 param_count;
+ __u16 prot_version;
+ __u32 ipa_supported;
+ __u32 ipa_enabled;
+} __attribute__ ((packed));
+
+/* The IPA command itself */
+struct qeth_ipa_cmd {
+ struct qeth_ipacmd_hdr hdr;
+ union {
+ struct qeth_ipacmd_setdelip4 setdelip4;
+ struct qeth_ipacmd_setdelip6 setdelip6;
+ struct qeth_ipacmd_setdelipm setdelipm;
+ struct qeth_ipacmd_setassparms setassparms;
+ struct qeth_ipacmd_layer2setdelmac setdelmac;
+ struct qeth_ipacmd_layer2setdelvlan setdelvlan;
+ struct qeth_create_destroy_address create_destroy_addr;
+ struct qeth_ipacmd_setadpparms setadapterparms;
+ struct qeth_set_routing setrtg;
+ } data;
+} __attribute__ ((packed));
+
+/*
+ * special command for ARP processing.
+ * this is not included in setassparms command before, because we get
+ * problem with the size of struct qeth_ipacmd_setassparms otherwise
+ */
+enum qeth_ipa_arp_return_codes {
+ QETH_IPA_ARP_RC_SUCCESS = 0x0000,
+ QETH_IPA_ARP_RC_FAILED = 0x0001,
+ QETH_IPA_ARP_RC_NOTSUPP = 0x0002,
+ QETH_IPA_ARP_RC_OUT_OF_RANGE = 0x0003,
+ QETH_IPA_ARP_RC_Q_NOTSUPP = 0x0004,
+ QETH_IPA_ARP_RC_Q_NO_DATA = 0x0008,
+};
+
+#define QETH_SETASS_BASE_LEN (sizeof(struct qeth_ipacmd_hdr) + \
+ sizeof(struct qeth_ipacmd_setassparms_hdr))
+#define QETH_IPA_ARP_DATA_POS(buffer) (buffer + IPA_PDU_HEADER_SIZE + \
+ QETH_SETASS_BASE_LEN)
+#define QETH_SETADP_BASE_LEN (sizeof(struct qeth_ipacmd_hdr) + \
+ sizeof(struct qeth_ipacmd_setadpparms_hdr))
+#define QETH_SNMP_SETADP_CMDLENGTH 16
+
+#define QETH_ARP_DATA_SIZE 3968
+#define QETH_ARP_CMD_LEN (QETH_ARP_DATA_SIZE + 8)
+/* Helper functions */
+#define IS_IPA_REPLY(cmd) (cmd->hdr.initiator == IPA_CMD_INITIATOR_HOST)
+
+/*****************************************************************************/
+/* END OF IP Assist related definitions */
+/*****************************************************************************/
+
+
+extern unsigned char WRITE_CCW[];
+extern unsigned char READ_CCW[];
+
+extern unsigned char CM_ENABLE[];
+#define CM_ENABLE_SIZE 0x63
+#define QETH_CM_ENABLE_ISSUER_RM_TOKEN(buffer) (buffer+0x2c)
+#define QETH_CM_ENABLE_FILTER_TOKEN(buffer) (buffer+0x53)
+#define QETH_CM_ENABLE_USER_DATA(buffer) (buffer+0x5b)
+
+#define QETH_CM_ENABLE_RESP_FILTER_TOKEN(buffer) \
+ (PDU_ENCAPSULATION(buffer)+ 0x13)
+
+
+extern unsigned char CM_SETUP[];
+#define CM_SETUP_SIZE 0x64
+#define QETH_CM_SETUP_DEST_ADDR(buffer) (buffer+0x2c)
+#define QETH_CM_SETUP_CONNECTION_TOKEN(buffer) (buffer+0x51)
+#define QETH_CM_SETUP_FILTER_TOKEN(buffer) (buffer+0x5a)
+
+#define QETH_CM_SETUP_RESP_DEST_ADDR(buffer) \
+ (PDU_ENCAPSULATION(buffer) + 0x1a)
+
+extern unsigned char ULP_ENABLE[];
+#define ULP_ENABLE_SIZE 0x6b
+#define QETH_ULP_ENABLE_LINKNUM(buffer) (buffer+0x61)
+#define QETH_ULP_ENABLE_DEST_ADDR(buffer) (buffer+0x2c)
+#define QETH_ULP_ENABLE_FILTER_TOKEN(buffer) (buffer+0x53)
+#define QETH_ULP_ENABLE_PORTNAME_AND_LL(buffer) (buffer+0x62)
+#define QETH_ULP_ENABLE_RESP_FILTER_TOKEN(buffer) \
+ (PDU_ENCAPSULATION(buffer) + 0x13)
+#define QETH_ULP_ENABLE_RESP_MAX_MTU(buffer) \
+ (PDU_ENCAPSULATION(buffer)+ 0x1f)
+#define QETH_ULP_ENABLE_RESP_DIFINFO_LEN(buffer) \
+ (PDU_ENCAPSULATION(buffer) + 0x17)
+#define QETH_ULP_ENABLE_RESP_LINK_TYPE(buffer) \
+ (PDU_ENCAPSULATION(buffer)+ 0x2b)
+/* Layer 2 defintions */
+#define QETH_PROT_LAYER2 0x08
+#define QETH_PROT_TCPIP 0x03
+#define QETH_ULP_ENABLE_PROT_TYPE(buffer) (buffer+0x50)
+#define QETH_IPA_CMD_PROT_TYPE(buffer) (buffer+0x19)
+
+extern unsigned char ULP_SETUP[];
+#define ULP_SETUP_SIZE 0x6c
+#define QETH_ULP_SETUP_DEST_ADDR(buffer) (buffer+0x2c)
+#define QETH_ULP_SETUP_CONNECTION_TOKEN(buffer) (buffer+0x51)
+#define QETH_ULP_SETUP_FILTER_TOKEN(buffer) (buffer+0x5a)
+#define QETH_ULP_SETUP_CUA(buffer) (buffer+0x68)
+#define QETH_ULP_SETUP_REAL_DEVADDR(buffer) (buffer+0x6a)
+
+#define QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(buffer) \
+ (PDU_ENCAPSULATION(buffer)+0x1a)
+
+
+extern unsigned char DM_ACT[];
+#define DM_ACT_SIZE 0x55
+#define QETH_DM_ACT_DEST_ADDR(buffer) (buffer+0x2c)
+#define QETH_DM_ACT_CONNECTION_TOKEN(buffer) (buffer+0x51)
+
+
+
+#define QETH_TRANSPORT_HEADER_SEQ_NO(buffer) (buffer+4)
+#define QETH_PDU_HEADER_SEQ_NO(buffer) (buffer+0x1c)
+#define QETH_PDU_HEADER_ACK_SEQ_NO(buffer) (buffer+0x20)
+
+extern unsigned char IDX_ACTIVATE_READ[];
+extern unsigned char IDX_ACTIVATE_WRITE[];
+
+#define IDX_ACTIVATE_SIZE 0x22
+#define QETH_IDX_ACT_ISSUER_RM_TOKEN(buffer) (buffer+0x0c)
+#define QETH_IDX_NO_PORTNAME_REQUIRED(buffer) ((buffer)[0x0b]&0x80)
+#define QETH_IDX_ACT_FUNC_LEVEL(buffer) (buffer+0x10)
+#define QETH_IDX_ACT_DATASET_NAME(buffer) (buffer+0x16)
+#define QETH_IDX_ACT_QDIO_DEV_CUA(buffer) (buffer+0x1e)
+#define QETH_IDX_ACT_QDIO_DEV_REALADDR(buffer) (buffer+0x20)
+#define QETH_IS_IDX_ACT_POS_REPLY(buffer) (((buffer)[0x08]&3)==2)
+#define QETH_IDX_REPLY_LEVEL(buffer) (buffer+0x12)
+
+#define PDU_ENCAPSULATION(buffer) \
+ (buffer + *(buffer + (*(buffer+0x0b)) + \
+ *(buffer + *(buffer+0x0b)+0x11) +0x07))
+
+#define IS_IPA(buffer) \
+ ((buffer) && \
+ ( *(buffer + ((*(buffer+0x0b))+4) )==0xc1) )
+
+#define ADDR_FRAME_TYPE_DIX 1
+#define ADDR_FRAME_TYPE_802_3 2
+#define ADDR_FRAME_TYPE_TR_WITHOUT_SR 0x10
+#define ADDR_FRAME_TYPE_TR_WITH_SR 0x20
+
+#endif
diff --git a/drivers/s390/net/qeth_proc.c b/drivers/s390/net/qeth_proc.c
new file mode 100644
index 0000000..0471919
--- /dev/null
+++ b/drivers/s390/net/qeth_proc.c
@@ -0,0 +1,495 @@
+/*
+ *
+ * linux/drivers/s390/net/qeth_fs.c ($Revision: 1.13 $)
+ *
+ * Linux on zSeries OSA Express and HiperSockets support
+ * This file contains code related to procfs.
+ *
+ * Copyright 2000,2003 IBM Corporation
+ *
+ * Author(s): Thomas Spatzier <tspat@de.ibm.com>
+ *
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/list.h>
+#include <linux/rwsem.h>
+
+#include "qeth.h"
+#include "qeth_mpc.h"
+#include "qeth_fs.h"
+
+const char *VERSION_QETH_PROC_C = "$Revision: 1.13 $";
+
+/***** /proc/qeth *****/
+#define QETH_PROCFILE_NAME "qeth"
+static struct proc_dir_entry *qeth_procfile;
+
+static void *
+qeth_procfile_seq_start(struct seq_file *s, loff_t *offset)
+{
+ struct list_head *next_card = NULL;
+ int i = 0;
+
+ down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+
+ if (*offset == 0)
+ return SEQ_START_TOKEN;
+
+ /* get card at pos *offset */
+ list_for_each(next_card, &qeth_ccwgroup_driver.driver.devices)
+ if (++i == *offset)
+ return next_card;
+
+ return NULL;
+}
+
+static void
+qeth_procfile_seq_stop(struct seq_file *s, void* it)
+{
+ up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+}
+
+static void *
+qeth_procfile_seq_next(struct seq_file *s, void *it, loff_t *offset)
+{
+ struct list_head *next_card = NULL;
+ struct list_head *current_card;
+
+ if (it == SEQ_START_TOKEN) {
+ next_card = qeth_ccwgroup_driver.driver.devices.next;
+ if (next_card->next == next_card) /* list empty */
+ return NULL;
+ (*offset)++;
+ } else {
+ current_card = (struct list_head *)it;
+ if (current_card->next == &qeth_ccwgroup_driver.driver.devices)
+ return NULL; /* end of list reached */
+ next_card = current_card->next;
+ (*offset)++;
+ }
+
+ return next_card;
+}
+
+static inline const char *
+qeth_get_router_str(struct qeth_card *card, int ipv)
+{
+ int routing_type = 0;
+
+ if (ipv == 4){
+ routing_type = card->options.route4.type;
+ } else {
+#ifdef CONFIG_QETH_IPV6
+ routing_type = card->options.route6.type;
+#else
+ return "n/a";
+#endif /* CONFIG_QETH_IPV6 */
+ }
+
+ if (routing_type == PRIMARY_ROUTER)
+ return "pri";
+ else if (routing_type == SECONDARY_ROUTER)
+ return "sec";
+ else if (routing_type == MULTICAST_ROUTER) {
+ if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
+ return "mc+";
+ return "mc";
+ } else if (routing_type == PRIMARY_CONNECTOR) {
+ if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
+ return "p+c";
+ return "p.c";
+ } else if (routing_type == SECONDARY_CONNECTOR) {
+ if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
+ return "s+c";
+ return "s.c";
+ } else if (routing_type == NO_ROUTER)
+ return "no";
+ else
+ return "unk";
+}
+
+static int
+qeth_procfile_seq_show(struct seq_file *s, void *it)
+{
+ struct device *device;
+ struct qeth_card *card;
+ char tmp[12]; /* for qeth_get_prioq_str */
+
+ if (it == SEQ_START_TOKEN){
+ seq_printf(s, "devices CHPID interface "
+ "cardtype port chksum prio-q'ing rtr4 "
+ "rtr6 fsz cnt\n");
+ seq_printf(s, "-------------------------- ----- ---------- "
+ "-------------- ---- ------ ---------- ---- "
+ "---- ----- -----\n");
+ } else {
+ device = list_entry(it, struct device, driver_list);
+ card = device->driver_data;
+ seq_printf(s, "%s/%s/%s x%02X %-10s %-14s %-4i ",
+ CARD_RDEV_ID(card),
+ CARD_WDEV_ID(card),
+ CARD_DDEV_ID(card),
+ card->info.chpid,
+ QETH_CARD_IFNAME(card),
+ qeth_get_cardname_short(card),
+ card->info.portno);
+ if (card->lan_online)
+ seq_printf(s, "%-6s %-10s %-4s %-4s %-5s %-5i\n",
+ qeth_get_checksum_str(card),
+ qeth_get_prioq_str(card, tmp),
+ qeth_get_router_str(card, 4),
+ qeth_get_router_str(card, 6),
+ qeth_get_bufsize_str(card),
+ card->qdio.in_buf_pool.buf_count);
+ else
+ seq_printf(s, " +++ LAN OFFLINE +++\n");
+ }
+ return 0;
+}
+
+static struct seq_operations qeth_procfile_seq_ops = {
+ .start = qeth_procfile_seq_start,
+ .stop = qeth_procfile_seq_stop,
+ .next = qeth_procfile_seq_next,
+ .show = qeth_procfile_seq_show,
+};
+
+static int
+qeth_procfile_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &qeth_procfile_seq_ops);
+}
+
+static struct file_operations qeth_procfile_fops = {
+ .owner = THIS_MODULE,
+ .open = qeth_procfile_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+/***** /proc/qeth_perf *****/
+#define QETH_PERF_PROCFILE_NAME "qeth_perf"
+static struct proc_dir_entry *qeth_perf_procfile;
+
+#ifdef CONFIG_QETH_PERF_STATS
+
+static void *
+qeth_perf_procfile_seq_start(struct seq_file *s, loff_t *offset)
+{
+ struct list_head *next_card = NULL;
+ int i = 0;
+
+ down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+ /* get card at pos *offset */
+ list_for_each(next_card, &qeth_ccwgroup_driver.driver.devices){
+ if (i == *offset)
+ return next_card;
+ i++;
+ }
+ return NULL;
+}
+
+static void
+qeth_perf_procfile_seq_stop(struct seq_file *s, void* it)
+{
+ up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+}
+
+static void *
+qeth_perf_procfile_seq_next(struct seq_file *s, void *it, loff_t *offset)
+{
+ struct list_head *current_card = (struct list_head *)it;
+
+ if (current_card->next == &qeth_ccwgroup_driver.driver.devices)
+ return NULL; /* end of list reached */
+ (*offset)++;
+ return current_card->next;
+}
+
+static int
+qeth_perf_procfile_seq_show(struct seq_file *s, void *it)
+{
+ struct device *device;
+ struct qeth_card *card;
+
+ device = list_entry(it, struct device, driver_list);
+ card = device->driver_data;
+ seq_printf(s, "For card with devnos %s/%s/%s (%s):\n",
+ CARD_RDEV_ID(card),
+ CARD_WDEV_ID(card),
+ CARD_DDEV_ID(card),
+ QETH_CARD_IFNAME(card)
+ );
+ seq_printf(s, " Skb's/buffers received : %li/%i\n"
+ " Skb's/buffers sent : %li/%i\n\n",
+ card->stats.rx_packets, card->perf_stats.bufs_rec,
+ card->stats.tx_packets, card->perf_stats.bufs_sent
+ );
+ seq_printf(s, " Skb's/buffers sent without packing : %li/%i\n"
+ " Skb's/buffers sent with packing : %i/%i\n\n",
+ card->stats.tx_packets - card->perf_stats.skbs_sent_pack,
+ card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack,
+ card->perf_stats.skbs_sent_pack,
+ card->perf_stats.bufs_sent_pack
+ );
+ seq_printf(s, " Skbs sent in SG mode : %i\n"
+ " Skb fragments sent in SG mode : %i\n\n",
+ card->perf_stats.sg_skbs_sent,
+ card->perf_stats.sg_frags_sent);
+ seq_printf(s, " large_send tx (in Kbytes) : %i\n"
+ " large_send count : %i\n\n",
+ card->perf_stats.large_send_bytes >> 10,
+ card->perf_stats.large_send_cnt);
+ seq_printf(s, " Packing state changes no pkg.->packing : %i/%i\n"
+ " Watermarks L/H : %i/%i\n"
+ " Current buffer usage (outbound q's) : "
+ "%i/%i/%i/%i\n\n",
+ card->perf_stats.sc_dp_p, card->perf_stats.sc_p_dp,
+ QETH_LOW_WATERMARK_PACK, QETH_HIGH_WATERMARK_PACK,
+ atomic_read(&card->qdio.out_qs[0]->used_buffers),
+ (card->qdio.no_out_queues > 1)?
+ atomic_read(&card->qdio.out_qs[1]->used_buffers)
+ : 0,
+ (card->qdio.no_out_queues > 2)?
+ atomic_read(&card->qdio.out_qs[2]->used_buffers)
+ : 0,
+ (card->qdio.no_out_queues > 3)?
+ atomic_read(&card->qdio.out_qs[3]->used_buffers)
+ : 0
+ );
+ seq_printf(s, " Inbound handler time (in us) : %i\n"
+ " Inbound handler count : %i\n"
+ " Inbound do_QDIO time (in us) : %i\n"
+ " Inbound do_QDIO count : %i\n\n"
+ " Outbound handler time (in us) : %i\n"
+ " Outbound handler count : %i\n\n"
+ " Outbound time (in us, incl QDIO) : %i\n"
+ " Outbound count : %i\n"
+ " Outbound do_QDIO time (in us) : %i\n"
+ " Outbound do_QDIO count : %i\n\n",
+ card->perf_stats.inbound_time,
+ card->perf_stats.inbound_cnt,
+ card->perf_stats.inbound_do_qdio_time,
+ card->perf_stats.inbound_do_qdio_cnt,
+ card->perf_stats.outbound_handler_time,
+ card->perf_stats.outbound_handler_cnt,
+ card->perf_stats.outbound_time,
+ card->perf_stats.outbound_cnt,
+ card->perf_stats.outbound_do_qdio_time,
+ card->perf_stats.outbound_do_qdio_cnt
+ );
+ return 0;
+}
+
+static struct seq_operations qeth_perf_procfile_seq_ops = {
+ .start = qeth_perf_procfile_seq_start,
+ .stop = qeth_perf_procfile_seq_stop,
+ .next = qeth_perf_procfile_seq_next,
+ .show = qeth_perf_procfile_seq_show,
+};
+
+static int
+qeth_perf_procfile_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &qeth_perf_procfile_seq_ops);
+}
+
+static struct file_operations qeth_perf_procfile_fops = {
+ .owner = THIS_MODULE,
+ .open = qeth_perf_procfile_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+#define qeth_perf_procfile_created qeth_perf_procfile
+#else
+#define qeth_perf_procfile_created 1
+#endif /* CONFIG_QETH_PERF_STATS */
+
+/***** /proc/qeth_ipa_takeover *****/
+#define QETH_IPATO_PROCFILE_NAME "qeth_ipa_takeover"
+static struct proc_dir_entry *qeth_ipato_procfile;
+
+static void *
+qeth_ipato_procfile_seq_start(struct seq_file *s, loff_t *offset)
+{
+ struct list_head *next_card = NULL;
+ int i = 0;
+
+ down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+ /* TODO: finish this */
+ /*
+ * maybe SEQ_SATRT_TOKEN can be returned for offset 0
+ * output driver settings then;
+ * else output setting for respective card
+ */
+ /* get card at pos *offset */
+ list_for_each(next_card, &qeth_ccwgroup_driver.driver.devices){
+ if (i == *offset)
+ return next_card;
+ i++;
+ }
+ return NULL;
+}
+
+static void
+qeth_ipato_procfile_seq_stop(struct seq_file *s, void* it)
+{
+ up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+}
+
+static void *
+qeth_ipato_procfile_seq_next(struct seq_file *s, void *it, loff_t *offset)
+{
+ struct list_head *current_card = (struct list_head *)it;
+
+ /* TODO: finish this */
+ /*
+ * maybe SEQ_SATRT_TOKEN can be returned for offset 0
+ * output driver settings then;
+ * else output setting for respective card
+ */
+ if (current_card->next == &qeth_ccwgroup_driver.driver.devices)
+ return NULL; /* end of list reached */
+ (*offset)++;
+ return current_card->next;
+}
+
+static int
+qeth_ipato_procfile_seq_show(struct seq_file *s, void *it)
+{
+ struct device *device;
+ struct qeth_card *card;
+
+ /* TODO: finish this */
+ /*
+ * maybe SEQ_SATRT_TOKEN can be returned for offset 0
+ * output driver settings then;
+ * else output setting for respective card
+ */
+ device = list_entry(it, struct device, driver_list);
+ card = device->driver_data;
+
+ return 0;
+}
+
+static struct seq_operations qeth_ipato_procfile_seq_ops = {
+ .start = qeth_ipato_procfile_seq_start,
+ .stop = qeth_ipato_procfile_seq_stop,
+ .next = qeth_ipato_procfile_seq_next,
+ .show = qeth_ipato_procfile_seq_show,
+};
+
+static int
+qeth_ipato_procfile_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &qeth_ipato_procfile_seq_ops);
+}
+
+static struct file_operations qeth_ipato_procfile_fops = {
+ .owner = THIS_MODULE,
+ .open = qeth_ipato_procfile_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+int __init
+qeth_create_procfs_entries(void)
+{
+ qeth_procfile = create_proc_entry(QETH_PROCFILE_NAME,
+ S_IFREG | 0444, NULL);
+ if (qeth_procfile)
+ qeth_procfile->proc_fops = &qeth_procfile_fops;
+
+#ifdef CONFIG_QETH_PERF_STATS
+ qeth_perf_procfile = create_proc_entry(QETH_PERF_PROCFILE_NAME,
+ S_IFREG | 0444, NULL);
+ if (qeth_perf_procfile)
+ qeth_perf_procfile->proc_fops = &qeth_perf_procfile_fops;
+#endif /* CONFIG_QETH_PERF_STATS */
+
+ qeth_ipato_procfile = create_proc_entry(QETH_IPATO_PROCFILE_NAME,
+ S_IFREG | 0444, NULL);
+ if (qeth_ipato_procfile)
+ qeth_ipato_procfile->proc_fops = &qeth_ipato_procfile_fops;
+
+ if (qeth_procfile &&
+ qeth_ipato_procfile &&
+ qeth_perf_procfile_created)
+ return 0;
+ else
+ return -ENOMEM;
+}
+
+void __exit
+qeth_remove_procfs_entries(void)
+{
+ if (qeth_procfile)
+ remove_proc_entry(QETH_PROCFILE_NAME, NULL);
+ if (qeth_perf_procfile)
+ remove_proc_entry(QETH_PERF_PROCFILE_NAME, NULL);
+ if (qeth_ipato_procfile)
+ remove_proc_entry(QETH_IPATO_PROCFILE_NAME, NULL);
+}
+
+
+/* ONLY FOR DEVELOPMENT! -> make it as module */
+/*
+static void
+qeth_create_sysfs_entries(void)
+{
+ struct device *dev;
+
+ down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+
+ list_for_each_entry(dev, &qeth_ccwgroup_driver.driver.devices,
+ driver_list)
+ qeth_create_device_attributes(dev);
+
+ up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+}
+
+static void
+qeth_remove_sysfs_entries(void)
+{
+ struct device *dev;
+
+ down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+
+ list_for_each_entry(dev, &qeth_ccwgroup_driver.driver.devices,
+ driver_list)
+ qeth_remove_device_attributes(dev);
+
+ up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
+}
+
+static int __init
+qeth_fs_init(void)
+{
+ printk(KERN_INFO "qeth_fs_init\n");
+ qeth_create_procfs_entries();
+ qeth_create_sysfs_entries();
+
+ return 0;
+}
+
+static void __exit
+qeth_fs_exit(void)
+{
+ printk(KERN_INFO "qeth_fs_exit\n");
+ qeth_remove_procfs_entries();
+ qeth_remove_sysfs_entries();
+}
+
+
+module_init(qeth_fs_init);
+module_exit(qeth_fs_exit);
+
+MODULE_LICENSE("GPL");
+*/
diff --git a/drivers/s390/net/qeth_sys.c b/drivers/s390/net/qeth_sys.c
new file mode 100644
index 0000000..2403483
--- /dev/null
+++ b/drivers/s390/net/qeth_sys.c
@@ -0,0 +1,1788 @@
+/*
+ *
+ * linux/drivers/s390/net/qeth_sys.c ($Revision: 1.51 $)
+ *
+ * Linux on zSeries OSA Express and HiperSockets support
+ * This file contains code related to sysfs.
+ *
+ * Copyright 2000,2003 IBM Corporation
+ *
+ * Author(s): Thomas Spatzier <tspat@de.ibm.com>
+ * Frank Pavlic <pavlic@de.ibm.com>
+ *
+ */
+#include <linux/list.h>
+#include <linux/rwsem.h>
+
+#include <asm/ebcdic.h>
+
+#include "qeth.h"
+#include "qeth_mpc.h"
+#include "qeth_fs.h"
+
+const char *VERSION_QETH_SYS_C = "$Revision: 1.51 $";
+
+/*****************************************************************************/
+/* */
+/* /sys-fs stuff UNDER DEVELOPMENT !!! */
+/* */
+/*****************************************************************************/
+//low/high watermark
+
+static ssize_t
+qeth_dev_state_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+ if (!card)
+ return -EINVAL;
+
+ switch (card->state) {
+ case CARD_STATE_DOWN:
+ return sprintf(buf, "DOWN\n");
+ case CARD_STATE_HARDSETUP:
+ return sprintf(buf, "HARDSETUP\n");
+ case CARD_STATE_SOFTSETUP:
+ return sprintf(buf, "SOFTSETUP\n");
+ case CARD_STATE_UP:
+ if (card->lan_online)
+ return sprintf(buf, "UP (LAN ONLINE)\n");
+ else
+ return sprintf(buf, "UP (LAN OFFLINE)\n");
+ case CARD_STATE_RECOVER:
+ return sprintf(buf, "RECOVER\n");
+ default:
+ return sprintf(buf, "UNKNOWN\n");
+ }
+}
+
+static DEVICE_ATTR(state, 0444, qeth_dev_state_show, NULL);
+
+static ssize_t
+qeth_dev_chpid_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%02X\n", card->info.chpid);
+}
+
+static DEVICE_ATTR(chpid, 0444, qeth_dev_chpid_show, NULL);
+
+static ssize_t
+qeth_dev_if_name_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+ if (!card)
+ return -EINVAL;
+ return sprintf(buf, "%s\n", QETH_CARD_IFNAME(card));
+}
+
+static DEVICE_ATTR(if_name, 0444, qeth_dev_if_name_show, NULL);
+
+static ssize_t
+qeth_dev_card_type_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%s\n", qeth_get_cardname_short(card));
+}
+
+static DEVICE_ATTR(card_type, 0444, qeth_dev_card_type_show, NULL);
+
+static ssize_t
+qeth_dev_portno_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->info.portno);
+}
+
+static ssize_t
+qeth_dev_portno_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ unsigned int portno;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ portno = simple_strtoul(buf, &tmp, 16);
+ if ((portno < 0) || (portno > MAX_PORTNO)){
+ PRINT_WARN("portno 0x%X is out of range\n", portno);
+ return -EINVAL;
+ }
+
+ card->info.portno = portno;
+ return count;
+}
+
+static DEVICE_ATTR(portno, 0644, qeth_dev_portno_show, qeth_dev_portno_store);
+
+static ssize_t
+qeth_dev_portname_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+ char portname[9] = {0, };
+
+ if (!card)
+ return -EINVAL;
+
+ if (card->info.portname_required) {
+ memcpy(portname, card->info.portname + 1, 8);
+ EBCASC(portname, 8);
+ return sprintf(buf, "%s\n", portname);
+ } else
+ return sprintf(buf, "no portname required\n");
+}
+
+static ssize_t
+qeth_dev_portname_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ tmp = strsep((char **) &buf, "\n");
+ if ((strlen(tmp) > 8) || (strlen(tmp) < 2))
+ return -EINVAL;
+
+ card->info.portname[0] = strlen(tmp);
+ /* for beauty reasons */
+ for (i = 1; i < 9; i++)
+ card->info.portname[i] = ' ';
+ strcpy(card->info.portname + 1, tmp);
+ ASCEBC(card->info.portname + 1, 8);
+
+ return count;
+}
+
+static DEVICE_ATTR(portname, 0644, qeth_dev_portname_show,
+ qeth_dev_portname_store);
+
+static ssize_t
+qeth_dev_checksum_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%s checksumming\n", qeth_get_checksum_str(card));
+}
+
+static ssize_t
+qeth_dev_checksum_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ tmp = strsep((char **) &buf, "\n");
+ if (!strcmp(tmp, "sw_checksumming"))
+ card->options.checksum_type = SW_CHECKSUMMING;
+ else if (!strcmp(tmp, "hw_checksumming"))
+ card->options.checksum_type = HW_CHECKSUMMING;
+ else if (!strcmp(tmp, "no_checksumming"))
+ card->options.checksum_type = NO_CHECKSUMMING;
+ else {
+ PRINT_WARN("Unknown checksumming type '%s'\n", tmp);
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(checksumming, 0644, qeth_dev_checksum_show,
+ qeth_dev_checksum_store);
+
+static ssize_t
+qeth_dev_prioqing_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ switch (card->qdio.do_prio_queueing) {
+ case QETH_PRIO_Q_ING_PREC:
+ return sprintf(buf, "%s\n", "by precedence");
+ case QETH_PRIO_Q_ING_TOS:
+ return sprintf(buf, "%s\n", "by type of service");
+ default:
+ return sprintf(buf, "always queue %i\n",
+ card->qdio.default_out_queue);
+ }
+}
+
+static ssize_t
+qeth_dev_prioqing_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ /* check if 1920 devices are supported ,
+ * if though we have to permit priority queueing
+ */
+ if (card->qdio.no_out_queues == 1) {
+ PRINT_WARN("Priority queueing disabled due "
+ "to hardware limitations!\n");
+ card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
+ return -EPERM;
+ }
+
+ tmp = strsep((char **) &buf, "\n");
+ if (!strcmp(tmp, "prio_queueing_prec"))
+ card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_PREC;
+ else if (!strcmp(tmp, "prio_queueing_tos"))
+ card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_TOS;
+ else if (!strcmp(tmp, "no_prio_queueing:0")) {
+ card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
+ card->qdio.default_out_queue = 0;
+ } else if (!strcmp(tmp, "no_prio_queueing:1")) {
+ card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
+ card->qdio.default_out_queue = 1;
+ } else if (!strcmp(tmp, "no_prio_queueing:2")) {
+ card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
+ card->qdio.default_out_queue = 2;
+ } else if (!strcmp(tmp, "no_prio_queueing:3")) {
+ card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
+ card->qdio.default_out_queue = 3;
+ } else if (!strcmp(tmp, "no_prio_queueing")) {
+ card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
+ card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
+ } else {
+ PRINT_WARN("Unknown queueing type '%s'\n", tmp);
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(priority_queueing, 0644, qeth_dev_prioqing_show,
+ qeth_dev_prioqing_store);
+
+static ssize_t
+qeth_dev_bufcnt_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->qdio.in_buf_pool.buf_count);
+}
+
+static ssize_t
+qeth_dev_bufcnt_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int cnt, old_cnt;
+ int rc;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ old_cnt = card->qdio.in_buf_pool.buf_count;
+ cnt = simple_strtoul(buf, &tmp, 10);
+ cnt = (cnt < QETH_IN_BUF_COUNT_MIN) ? QETH_IN_BUF_COUNT_MIN :
+ ((cnt > QETH_IN_BUF_COUNT_MAX) ? QETH_IN_BUF_COUNT_MAX : cnt);
+ if (old_cnt != cnt) {
+ if ((rc = qeth_realloc_buffer_pool(card, cnt)))
+ PRINT_WARN("Error (%d) while setting "
+ "buffer count.\n", rc);
+ }
+ return count;
+}
+
+static DEVICE_ATTR(buffer_count, 0644, qeth_dev_bufcnt_show,
+ qeth_dev_bufcnt_store);
+
+static inline ssize_t
+qeth_dev_route_show(struct qeth_card *card, struct qeth_routing_info *route,
+ char *buf)
+{
+ switch (route->type) {
+ case PRIMARY_ROUTER:
+ return sprintf(buf, "%s\n", "primary router");
+ case SECONDARY_ROUTER:
+ return sprintf(buf, "%s\n", "secondary router");
+ case MULTICAST_ROUTER:
+ if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
+ return sprintf(buf, "%s\n", "multicast router+");
+ else
+ return sprintf(buf, "%s\n", "multicast router");
+ case PRIMARY_CONNECTOR:
+ if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
+ return sprintf(buf, "%s\n", "primary connector+");
+ else
+ return sprintf(buf, "%s\n", "primary connector");
+ case SECONDARY_CONNECTOR:
+ if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
+ return sprintf(buf, "%s\n", "secondary connector+");
+ else
+ return sprintf(buf, "%s\n", "secondary connector");
+ default:
+ return sprintf(buf, "%s\n", "no");
+ }
+}
+
+static ssize_t
+qeth_dev_route4_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_route_show(card, &card->options.route4, buf);
+}
+
+static inline ssize_t
+qeth_dev_route_store(struct qeth_card *card, struct qeth_routing_info *route,
+ enum qeth_prot_versions prot, const char *buf, size_t count)
+{
+ enum qeth_routing_types old_route_type = route->type;
+ char *tmp;
+ int rc;
+
+ tmp = strsep((char **) &buf, "\n");
+
+ if (!strcmp(tmp, "no_router")){
+ route->type = NO_ROUTER;
+ } else if (!strcmp(tmp, "primary_connector")) {
+ route->type = PRIMARY_CONNECTOR;
+ } else if (!strcmp(tmp, "secondary_connector")) {
+ route->type = SECONDARY_CONNECTOR;
+ } else if (!strcmp(tmp, "multicast_router")) {
+ route->type = MULTICAST_ROUTER;
+ } else if (!strcmp(tmp, "primary_router")) {
+ route->type = PRIMARY_ROUTER;
+ } else if (!strcmp(tmp, "secondary_router")) {
+ route->type = SECONDARY_ROUTER;
+ } else if (!strcmp(tmp, "multicast_router")) {
+ route->type = MULTICAST_ROUTER;
+ } else {
+ PRINT_WARN("Invalid routing type '%s'.\n", tmp);
+ return -EINVAL;
+ }
+ if (((card->state == CARD_STATE_SOFTSETUP) ||
+ (card->state == CARD_STATE_UP)) &&
+ (old_route_type != route->type)){
+ if (prot == QETH_PROT_IPV4)
+ rc = qeth_setrouting_v4(card);
+ else if (prot == QETH_PROT_IPV6)
+ rc = qeth_setrouting_v6(card);
+ }
+ return count;
+}
+
+static ssize_t
+qeth_dev_route4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_route_store(card, &card->options.route4,
+ QETH_PROT_IPV4, buf, count);
+}
+
+static DEVICE_ATTR(route4, 0644, qeth_dev_route4_show, qeth_dev_route4_store);
+
+#ifdef CONFIG_QETH_IPV6
+static ssize_t
+qeth_dev_route6_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (!qeth_is_supported(card, IPA_IPV6))
+ return sprintf(buf, "%s\n", "n/a");
+
+ return qeth_dev_route_show(card, &card->options.route6, buf);
+}
+
+static ssize_t
+qeth_dev_route6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (!qeth_is_supported(card, IPA_IPV6)){
+ PRINT_WARN("IPv6 not supported for interface %s.\n"
+ "Routing status no changed.\n",
+ QETH_CARD_IFNAME(card));
+ return -ENOTSUPP;
+ }
+
+ return qeth_dev_route_store(card, &card->options.route6,
+ QETH_PROT_IPV6, buf, count);
+}
+
+static DEVICE_ATTR(route6, 0644, qeth_dev_route6_show, qeth_dev_route6_store);
+#endif
+
+static ssize_t
+qeth_dev_add_hhlen_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->options.add_hhlen);
+}
+
+static ssize_t
+qeth_dev_add_hhlen_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ i = simple_strtoul(buf, &tmp, 10);
+ if ((i < 0) || (i > MAX_ADD_HHLEN)) {
+ PRINT_WARN("add_hhlen out of range\n");
+ return -EINVAL;
+ }
+ card->options.add_hhlen = i;
+
+ return count;
+}
+
+static DEVICE_ATTR(add_hhlen, 0644, qeth_dev_add_hhlen_show,
+ qeth_dev_add_hhlen_store);
+
+static ssize_t
+qeth_dev_fake_ll_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->options.fake_ll? 1:0);
+}
+
+static ssize_t
+qeth_dev_fake_ll_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ i = simple_strtoul(buf, &tmp, 16);
+ if ((i != 0) && (i != 1)) {
+ PRINT_WARN("fake_ll: write 0 or 1 to this file!\n");
+ return -EINVAL;
+ }
+ card->options.fake_ll = i;
+ return count;
+}
+
+static DEVICE_ATTR(fake_ll, 0644, qeth_dev_fake_ll_show,
+ qeth_dev_fake_ll_store);
+
+static ssize_t
+qeth_dev_fake_broadcast_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
+}
+
+static ssize_t
+qeth_dev_fake_broadcast_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ i = simple_strtoul(buf, &tmp, 16);
+ if ((i == 0) || (i == 1))
+ card->options.fake_broadcast = i;
+ else {
+ PRINT_WARN("fake_broadcast: write 0 or 1 to this file!\n");
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(fake_broadcast, 0644, qeth_dev_fake_broadcast_show,
+ qeth_dev_fake_broadcast_store);
+
+static ssize_t
+qeth_dev_recover_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if (card->state != CARD_STATE_UP)
+ return -EPERM;
+
+ i = simple_strtoul(buf, &tmp, 16);
+ if (i == 1)
+ qeth_schedule_recovery(card);
+
+ return count;
+}
+
+static DEVICE_ATTR(recover, 0200, NULL, qeth_dev_recover_store);
+
+static ssize_t
+qeth_dev_broadcast_mode_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
+ (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
+ return sprintf(buf, "n/a\n");
+
+ return sprintf(buf, "%s\n", (card->options.broadcast_mode ==
+ QETH_TR_BROADCAST_ALLRINGS)?
+ "all rings":"local");
+}
+
+static ssize_t
+qeth_dev_broadcast_mode_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
+ (card->info.link_type == QETH_LINK_TYPE_LANE_TR))){
+ PRINT_WARN("Device is not a tokenring device!\n");
+ return -EINVAL;
+ }
+
+ tmp = strsep((char **) &buf, "\n");
+
+ if (!strcmp(tmp, "local")){
+ card->options.broadcast_mode = QETH_TR_BROADCAST_LOCAL;
+ return count;
+ } else if (!strcmp(tmp, "all_rings")) {
+ card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
+ return count;
+ } else {
+ PRINT_WARN("broadcast_mode: invalid mode %s!\n",
+ tmp);
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(broadcast_mode, 0644, qeth_dev_broadcast_mode_show,
+ qeth_dev_broadcast_mode_store);
+
+static ssize_t
+qeth_dev_canonical_macaddr_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
+ (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
+ return sprintf(buf, "n/a\n");
+
+ return sprintf(buf, "%i\n", (card->options.macaddr_mode ==
+ QETH_TR_MACADDR_CANONICAL)? 1:0);
+}
+
+static ssize_t
+qeth_dev_canonical_macaddr_store(struct device *dev, const char *buf,
+ size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
+ (card->info.link_type == QETH_LINK_TYPE_LANE_TR))){
+ PRINT_WARN("Device is not a tokenring device!\n");
+ return -EINVAL;
+ }
+
+ i = simple_strtoul(buf, &tmp, 16);
+ if ((i == 0) || (i == 1))
+ card->options.macaddr_mode = i?
+ QETH_TR_MACADDR_CANONICAL :
+ QETH_TR_MACADDR_NONCANONICAL;
+ else {
+ PRINT_WARN("canonical_macaddr: write 0 or 1 to this file!\n");
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(canonical_macaddr, 0644, qeth_dev_canonical_macaddr_show,
+ qeth_dev_canonical_macaddr_store);
+
+static ssize_t
+qeth_dev_layer2_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->options.layer2 ? 1:0);
+}
+
+static ssize_t
+qeth_dev_layer2_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if (((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER)) ||
+ (card->info.type != QETH_CARD_TYPE_OSAE))
+ return -EPERM;
+
+ i = simple_strtoul(buf, &tmp, 16);
+ if ((i == 0) || (i == 1))
+ card->options.layer2 = i;
+ else {
+ PRINT_WARN("layer2: write 0 or 1 to this file!\n");
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(layer2, 0644, qeth_dev_layer2_show,
+ qeth_dev_layer2_store);
+
+static ssize_t
+qeth_dev_large_send_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ switch (card->options.large_send) {
+ case QETH_LARGE_SEND_NO:
+ return sprintf(buf, "%s\n", "no");
+ case QETH_LARGE_SEND_EDDP:
+ return sprintf(buf, "%s\n", "EDDP");
+ case QETH_LARGE_SEND_TSO:
+ return sprintf(buf, "%s\n", "TSO");
+ default:
+ return sprintf(buf, "%s\n", "N/A");
+ }
+}
+
+static ssize_t
+qeth_dev_large_send_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ enum qeth_large_send_types type;
+ int rc = 0;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ tmp = strsep((char **) &buf, "\n");
+
+ if (!strcmp(tmp, "no")){
+ type = QETH_LARGE_SEND_NO;
+ } else if (!strcmp(tmp, "EDDP")) {
+ type = QETH_LARGE_SEND_EDDP;
+ } else if (!strcmp(tmp, "TSO")) {
+ type = QETH_LARGE_SEND_TSO;
+ } else {
+ PRINT_WARN("large_send: invalid mode %s!\n", tmp);
+ return -EINVAL;
+ }
+ if (card->options.large_send == type)
+ return count;
+ card->options.large_send = type;
+ if ((rc = qeth_set_large_send(card)))
+ return rc;
+
+ return count;
+}
+
+static DEVICE_ATTR(large_send, 0644, qeth_dev_large_send_show,
+ qeth_dev_large_send_store);
+
+static ssize_t
+qeth_dev_blkt_show(char *buf, struct qeth_card *card, int value )
+{
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", value);
+}
+
+static ssize_t
+qeth_dev_blkt_store(struct qeth_card *card, const char *buf, size_t count,
+ int *value, int max_value)
+{
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ i = simple_strtoul(buf, &tmp, 10);
+ if (i <= max_value) {
+ *value = i;
+ } else {
+ PRINT_WARN("blkt total time: write values between"
+ " 0 and %d to this file!\n", max_value);
+ return -EINVAL;
+ }
+ return count;
+}
+
+static ssize_t
+qeth_dev_blkt_total_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ return qeth_dev_blkt_show(buf, card, card->info.blkt.time_total);
+}
+
+
+static ssize_t
+qeth_dev_blkt_total_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ return qeth_dev_blkt_store(card, buf, count,
+ &card->info.blkt.time_total,1000);
+}
+
+
+
+static DEVICE_ATTR(total, 0644, qeth_dev_blkt_total_show,
+ qeth_dev_blkt_total_store);
+
+static ssize_t
+qeth_dev_blkt_inter_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ return qeth_dev_blkt_show(buf, card, card->info.blkt.inter_packet);
+}
+
+
+static ssize_t
+qeth_dev_blkt_inter_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ return qeth_dev_blkt_store(card, buf, count,
+ &card->info.blkt.inter_packet,100);
+}
+
+static DEVICE_ATTR(inter, 0644, qeth_dev_blkt_inter_show,
+ qeth_dev_blkt_inter_store);
+
+static ssize_t
+qeth_dev_blkt_inter_jumbo_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ return qeth_dev_blkt_show(buf, card,
+ card->info.blkt.inter_packet_jumbo);
+}
+
+
+static ssize_t
+qeth_dev_blkt_inter_jumbo_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ return qeth_dev_blkt_store(card, buf, count,
+ &card->info.blkt.inter_packet_jumbo,100);
+}
+
+static DEVICE_ATTR(inter_jumbo, 0644, qeth_dev_blkt_inter_jumbo_show,
+ qeth_dev_blkt_inter_jumbo_store);
+
+static struct device_attribute * qeth_blkt_device_attrs[] = {
+ &dev_attr_total,
+ &dev_attr_inter,
+ &dev_attr_inter_jumbo,
+ NULL,
+};
+
+static struct attribute_group qeth_device_blkt_group = {
+ .name = "blkt",
+ .attrs = (struct attribute **)qeth_blkt_device_attrs,
+};
+
+static struct device_attribute * qeth_device_attrs[] = {
+ &dev_attr_state,
+ &dev_attr_chpid,
+ &dev_attr_if_name,
+ &dev_attr_card_type,
+ &dev_attr_portno,
+ &dev_attr_portname,
+ &dev_attr_checksumming,
+ &dev_attr_priority_queueing,
+ &dev_attr_buffer_count,
+ &dev_attr_route4,
+#ifdef CONFIG_QETH_IPV6
+ &dev_attr_route6,
+#endif
+ &dev_attr_add_hhlen,
+ &dev_attr_fake_ll,
+ &dev_attr_fake_broadcast,
+ &dev_attr_recover,
+ &dev_attr_broadcast_mode,
+ &dev_attr_canonical_macaddr,
+ &dev_attr_layer2,
+ &dev_attr_large_send,
+ NULL,
+};
+
+static struct attribute_group qeth_device_attr_group = {
+ .attrs = (struct attribute **)qeth_device_attrs,
+};
+
+
+#define QETH_DEVICE_ATTR(_id,_name,_mode,_show,_store) \
+struct device_attribute dev_attr_##_id = { \
+ .attr = {.name=__stringify(_name), .mode=_mode, .owner=THIS_MODULE },\
+ .show = _show, \
+ .store = _store, \
+};
+
+int
+qeth_check_layer2(struct qeth_card *card)
+{
+ if (card->options.layer2)
+ return -EPERM;
+ return 0;
+}
+
+
+static ssize_t
+qeth_dev_ipato_enable_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
+}
+
+static ssize_t
+qeth_dev_ipato_enable_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ tmp = strsep((char **) &buf, "\n");
+ if (!strcmp(tmp, "toggle")){
+ card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
+ } else if (!strcmp(tmp, "1")){
+ card->ipato.enabled = 1;
+ } else if (!strcmp(tmp, "0")){
+ card->ipato.enabled = 0;
+ } else {
+ PRINT_WARN("ipato_enable: write 0, 1 or 'toggle' to "
+ "this file\n");
+ return -EINVAL;
+ }
+ return count;
+}
+
+static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
+ qeth_dev_ipato_enable_show,
+ qeth_dev_ipato_enable_store);
+
+static ssize_t
+qeth_dev_ipato_invert4_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
+}
+
+static ssize_t
+qeth_dev_ipato_invert4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ tmp = strsep((char **) &buf, "\n");
+ if (!strcmp(tmp, "toggle")){
+ card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
+ } else if (!strcmp(tmp, "1")){
+ card->ipato.invert4 = 1;
+ } else if (!strcmp(tmp, "0")){
+ card->ipato.invert4 = 0;
+ } else {
+ PRINT_WARN("ipato_invert4: write 0, 1 or 'toggle' to "
+ "this file\n");
+ return -EINVAL;
+ }
+ return count;
+}
+
+static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
+ qeth_dev_ipato_invert4_show,
+ qeth_dev_ipato_invert4_store);
+
+static inline ssize_t
+qeth_dev_ipato_add_show(char *buf, struct qeth_card *card,
+ enum qeth_prot_versions proto)
+{
+ struct qeth_ipato_entry *ipatoe;
+ unsigned long flags;
+ char addr_str[40];
+ int entry_len; /* length of 1 entry string, differs between v4 and v6 */
+ int i = 0;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
+ /* add strlen for "/<mask>\n" */
+ entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry(ipatoe, &card->ipato.entries, entry){
+ if (ipatoe->proto != proto)
+ continue;
+ /* String must not be longer than PAGE_SIZE. So we check if
+ * string length gets near PAGE_SIZE. Then we can savely display
+ * the next IPv6 address (worst case, compared to IPv4) */
+ if ((PAGE_SIZE - i) <= entry_len)
+ break;
+ qeth_ipaddr_to_string(proto, ipatoe->addr, addr_str);
+ i += snprintf(buf + i, PAGE_SIZE - i,
+ "%s/%i\n", addr_str, ipatoe->mask_bits);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ i += snprintf(buf + i, PAGE_SIZE - i, "\n");
+
+ return i;
+}
+
+static ssize_t
+qeth_dev_ipato_add4_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
+}
+
+static inline int
+qeth_parse_ipatoe(const char* buf, enum qeth_prot_versions proto,
+ u8 *addr, int *mask_bits)
+{
+ const char *start, *end;
+ char *tmp;
+ char buffer[49] = {0, };
+
+ start = buf;
+ /* get address string */
+ end = strchr(start, '/');
+ if (!end){
+ PRINT_WARN("Invalid format for ipato_addx/delx. "
+ "Use <ip addr>/<mask bits>\n");
+ return -EINVAL;
+ }
+ strncpy(buffer, start, end - start);
+ if (qeth_string_to_ipaddr(buffer, proto, addr)){
+ PRINT_WARN("Invalid IP address format!\n");
+ return -EINVAL;
+ }
+ start = end + 1;
+ *mask_bits = simple_strtoul(start, &tmp, 10);
+
+ return 0;
+}
+
+static inline ssize_t
+qeth_dev_ipato_add_store(const char *buf, size_t count,
+ struct qeth_card *card, enum qeth_prot_versions proto)
+{
+ struct qeth_ipato_entry *ipatoe;
+ u8 addr[16];
+ int mask_bits;
+ int rc;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ if ((rc = qeth_parse_ipatoe(buf, proto, addr, &mask_bits)))
+ return rc;
+
+ if (!(ipatoe = kmalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL))){
+ PRINT_WARN("No memory to allocate ipato entry\n");
+ return -ENOMEM;
+ }
+ memset(ipatoe, 0, sizeof(struct qeth_ipato_entry));
+ ipatoe->proto = proto;
+ memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
+ ipatoe->mask_bits = mask_bits;
+
+ if ((rc = qeth_add_ipato_entry(card, ipatoe))){
+ kfree(ipatoe);
+ return rc;
+ }
+
+ return count;
+}
+
+static ssize_t
+qeth_dev_ipato_add4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
+}
+
+static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
+ qeth_dev_ipato_add4_show,
+ qeth_dev_ipato_add4_store);
+
+static inline ssize_t
+qeth_dev_ipato_del_store(const char *buf, size_t count,
+ struct qeth_card *card, enum qeth_prot_versions proto)
+{
+ u8 addr[16];
+ int mask_bits;
+ int rc;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ if ((rc = qeth_parse_ipatoe(buf, proto, addr, &mask_bits)))
+ return rc;
+
+ qeth_del_ipato_entry(card, proto, addr, mask_bits);
+
+ return count;
+}
+
+static ssize_t
+qeth_dev_ipato_del4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
+}
+
+static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
+ qeth_dev_ipato_del4_store);
+
+#ifdef CONFIG_QETH_IPV6
+static ssize_t
+qeth_dev_ipato_invert6_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
+}
+
+static ssize_t
+qeth_dev_ipato_invert6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+ char *tmp;
+
+ if (!card)
+ return -EINVAL;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ tmp = strsep((char **) &buf, "\n");
+ if (!strcmp(tmp, "toggle")){
+ card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
+ } else if (!strcmp(tmp, "1")){
+ card->ipato.invert6 = 1;
+ } else if (!strcmp(tmp, "0")){
+ card->ipato.invert6 = 0;
+ } else {
+ PRINT_WARN("ipato_invert6: write 0, 1 or 'toggle' to "
+ "this file\n");
+ return -EINVAL;
+ }
+ return count;
+}
+
+static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
+ qeth_dev_ipato_invert6_show,
+ qeth_dev_ipato_invert6_store);
+
+
+static ssize_t
+qeth_dev_ipato_add6_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
+}
+
+static ssize_t
+qeth_dev_ipato_add6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
+}
+
+static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
+ qeth_dev_ipato_add6_show,
+ qeth_dev_ipato_add6_store);
+
+static ssize_t
+qeth_dev_ipato_del6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
+}
+
+static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
+ qeth_dev_ipato_del6_store);
+#endif /* CONFIG_QETH_IPV6 */
+
+static struct device_attribute * qeth_ipato_device_attrs[] = {
+ &dev_attr_ipato_enable,
+ &dev_attr_ipato_invert4,
+ &dev_attr_ipato_add4,
+ &dev_attr_ipato_del4,
+#ifdef CONFIG_QETH_IPV6
+ &dev_attr_ipato_invert6,
+ &dev_attr_ipato_add6,
+ &dev_attr_ipato_del6,
+#endif
+ NULL,
+};
+
+static struct attribute_group qeth_device_ipato_group = {
+ .name = "ipa_takeover",
+ .attrs = (struct attribute **)qeth_ipato_device_attrs,
+};
+
+static inline ssize_t
+qeth_dev_vipa_add_show(char *buf, struct qeth_card *card,
+ enum qeth_prot_versions proto)
+{
+ struct qeth_ipaddr *ipaddr;
+ char addr_str[40];
+ int entry_len; /* length of 1 entry string, differs between v4 and v6 */
+ unsigned long flags;
+ int i = 0;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
+ entry_len += 2; /* \n + terminator */
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry(ipaddr, &card->ip_list, entry){
+ if (ipaddr->proto != proto)
+ continue;
+ if (ipaddr->type != QETH_IP_TYPE_VIPA)
+ continue;
+ /* String must not be longer than PAGE_SIZE. So we check if
+ * string length gets near PAGE_SIZE. Then we can savely display
+ * the next IPv6 address (worst case, compared to IPv4) */
+ if ((PAGE_SIZE - i) <= entry_len)
+ break;
+ qeth_ipaddr_to_string(proto, (const u8 *)&ipaddr->u, addr_str);
+ i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ i += snprintf(buf + i, PAGE_SIZE - i, "\n");
+
+ return i;
+}
+
+static ssize_t
+qeth_dev_vipa_add4_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
+}
+
+static inline int
+qeth_parse_vipae(const char* buf, enum qeth_prot_versions proto,
+ u8 *addr)
+{
+ if (qeth_string_to_ipaddr(buf, proto, addr)){
+ PRINT_WARN("Invalid IP address format!\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static inline ssize_t
+qeth_dev_vipa_add_store(const char *buf, size_t count,
+ struct qeth_card *card, enum qeth_prot_versions proto)
+{
+ u8 addr[16] = {0, };
+ int rc;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ if ((rc = qeth_parse_vipae(buf, proto, addr)))
+ return rc;
+
+ if ((rc = qeth_add_vipa(card, proto, addr)))
+ return rc;
+
+ return count;
+}
+
+static ssize_t
+qeth_dev_vipa_add4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
+}
+
+static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
+ qeth_dev_vipa_add4_show,
+ qeth_dev_vipa_add4_store);
+
+static inline ssize_t
+qeth_dev_vipa_del_store(const char *buf, size_t count,
+ struct qeth_card *card, enum qeth_prot_versions proto)
+{
+ u8 addr[16];
+ int rc;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ if ((rc = qeth_parse_vipae(buf, proto, addr)))
+ return rc;
+
+ qeth_del_vipa(card, proto, addr);
+
+ return count;
+}
+
+static ssize_t
+qeth_dev_vipa_del4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
+}
+
+static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
+ qeth_dev_vipa_del4_store);
+
+#ifdef CONFIG_QETH_IPV6
+static ssize_t
+qeth_dev_vipa_add6_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
+}
+
+static ssize_t
+qeth_dev_vipa_add6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
+}
+
+static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
+ qeth_dev_vipa_add6_show,
+ qeth_dev_vipa_add6_store);
+
+static ssize_t
+qeth_dev_vipa_del6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ return qeth_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
+}
+
+static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
+ qeth_dev_vipa_del6_store);
+#endif /* CONFIG_QETH_IPV6 */
+
+static struct device_attribute * qeth_vipa_device_attrs[] = {
+ &dev_attr_vipa_add4,
+ &dev_attr_vipa_del4,
+#ifdef CONFIG_QETH_IPV6
+ &dev_attr_vipa_add6,
+ &dev_attr_vipa_del6,
+#endif
+ NULL,
+};
+
+static struct attribute_group qeth_device_vipa_group = {
+ .name = "vipa",
+ .attrs = (struct attribute **)qeth_vipa_device_attrs,
+};
+
+static inline ssize_t
+qeth_dev_rxip_add_show(char *buf, struct qeth_card *card,
+ enum qeth_prot_versions proto)
+{
+ struct qeth_ipaddr *ipaddr;
+ char addr_str[40];
+ int entry_len; /* length of 1 entry string, differs between v4 and v6 */
+ unsigned long flags;
+ int i = 0;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+
+ entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
+ entry_len += 2; /* \n + terminator */
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry(ipaddr, &card->ip_list, entry){
+ if (ipaddr->proto != proto)
+ continue;
+ if (ipaddr->type != QETH_IP_TYPE_RXIP)
+ continue;
+ /* String must not be longer than PAGE_SIZE. So we check if
+ * string length gets near PAGE_SIZE. Then we can savely display
+ * the next IPv6 address (worst case, compared to IPv4) */
+ if ((PAGE_SIZE - i) <= entry_len)
+ break;
+ qeth_ipaddr_to_string(proto, (const u8 *)&ipaddr->u, addr_str);
+ i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ i += snprintf(buf + i, PAGE_SIZE - i, "\n");
+
+ return i;
+}
+
+static ssize_t
+qeth_dev_rxip_add4_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
+}
+
+static inline int
+qeth_parse_rxipe(const char* buf, enum qeth_prot_versions proto,
+ u8 *addr)
+{
+ if (qeth_string_to_ipaddr(buf, proto, addr)){
+ PRINT_WARN("Invalid IP address format!\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static inline ssize_t
+qeth_dev_rxip_add_store(const char *buf, size_t count,
+ struct qeth_card *card, enum qeth_prot_versions proto)
+{
+ u8 addr[16] = {0, };
+ int rc;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ if ((rc = qeth_parse_rxipe(buf, proto, addr)))
+ return rc;
+
+ if ((rc = qeth_add_rxip(card, proto, addr)))
+ return rc;
+
+ return count;
+}
+
+static ssize_t
+qeth_dev_rxip_add4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
+}
+
+static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
+ qeth_dev_rxip_add4_show,
+ qeth_dev_rxip_add4_store);
+
+static inline ssize_t
+qeth_dev_rxip_del_store(const char *buf, size_t count,
+ struct qeth_card *card, enum qeth_prot_versions proto)
+{
+ u8 addr[16];
+ int rc;
+
+ if (qeth_check_layer2(card))
+ return -EPERM;
+ if ((rc = qeth_parse_rxipe(buf, proto, addr)))
+ return rc;
+
+ qeth_del_rxip(card, proto, addr);
+
+ return count;
+}
+
+static ssize_t
+qeth_dev_rxip_del4_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
+}
+
+static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
+ qeth_dev_rxip_del4_store);
+
+#ifdef CONFIG_QETH_IPV6
+static ssize_t
+qeth_dev_rxip_add6_show(struct device *dev, char *buf)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
+}
+
+static ssize_t
+qeth_dev_rxip_add6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
+}
+
+static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
+ qeth_dev_rxip_add6_show,
+ qeth_dev_rxip_add6_store);
+
+static ssize_t
+qeth_dev_rxip_del6_store(struct device *dev, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev->driver_data;
+
+ if (!card)
+ return -EINVAL;
+
+ return qeth_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
+}
+
+static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
+ qeth_dev_rxip_del6_store);
+#endif /* CONFIG_QETH_IPV6 */
+
+static struct device_attribute * qeth_rxip_device_attrs[] = {
+ &dev_attr_rxip_add4,
+ &dev_attr_rxip_del4,
+#ifdef CONFIG_QETH_IPV6
+ &dev_attr_rxip_add6,
+ &dev_attr_rxip_del6,
+#endif
+ NULL,
+};
+
+static struct attribute_group qeth_device_rxip_group = {
+ .name = "rxip",
+ .attrs = (struct attribute **)qeth_rxip_device_attrs,
+};
+
+int
+qeth_create_device_attributes(struct device *dev)
+{
+ int ret;
+
+ if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_attr_group)))
+ return ret;
+ if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group))){
+ sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
+ return ret;
+ }
+ if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group))){
+ sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
+ return ret;
+ }
+ if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group))){
+ sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
+ }
+ if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_blkt_group)))
+ return ret;
+
+ return ret;
+}
+
+void
+qeth_remove_device_attributes(struct device *dev)
+{
+ sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_blkt_group);
+}
+
+/**********************/
+/* DRIVER ATTRIBUTES */
+/**********************/
+static ssize_t
+qeth_driver_group_store(struct device_driver *ddrv, const char *buf,
+ size_t count)
+{
+ const char *start, *end;
+ char bus_ids[3][BUS_ID_SIZE], *argv[3];
+ int i;
+ int err;
+
+ start = buf;
+ for (i = 0; i < 3; i++) {
+ static const char delim[] = { ',', ',', '\n' };
+ int len;
+
+ if (!(end = strchr(start, delim[i])))
+ return -EINVAL;
+ len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start);
+ strncpy(bus_ids[i], start, len);
+ bus_ids[i][len] = '\0';
+ start = end + 1;
+ argv[i] = bus_ids[i];
+ }
+ err = ccwgroup_create(qeth_root_dev, qeth_ccwgroup_driver.driver_id,
+ &qeth_ccw_driver, 3, argv);
+ if (err)
+ return err;
+ else
+ return count;
+}
+
+
+static DRIVER_ATTR(group, 0200, 0, qeth_driver_group_store);
+
+static ssize_t
+qeth_driver_notifier_register_store(struct device_driver *ddrv, const char *buf,
+ size_t count)
+{
+ int rc;
+ int signum;
+ char *tmp, *tmp2;
+
+ tmp = strsep((char **) &buf, "\n");
+ if (!strncmp(tmp, "unregister", 10)){
+ if ((rc = qeth_notifier_unregister(current)))
+ return rc;
+ return count;
+ }
+
+ signum = simple_strtoul(tmp, &tmp2, 10);
+ if ((signum < 0) || (signum > 32)){
+ PRINT_WARN("Signal number %d is out of range\n", signum);
+ return -EINVAL;
+ }
+ if ((rc = qeth_notifier_register(current, signum)))
+ return rc;
+
+ return count;
+}
+
+static DRIVER_ATTR(notifier_register, 0200, 0,
+ qeth_driver_notifier_register_store);
+
+int
+qeth_create_driver_attributes(void)
+{
+ int rc;
+
+ if ((rc = driver_create_file(&qeth_ccwgroup_driver.driver,
+ &driver_attr_group)))
+ return rc;
+ return driver_create_file(&qeth_ccwgroup_driver.driver,
+ &driver_attr_notifier_register);
+}
+
+void
+qeth_remove_driver_attributes(void)
+{
+ driver_remove_file(&qeth_ccwgroup_driver.driver,
+ &driver_attr_group);
+ driver_remove_file(&qeth_ccwgroup_driver.driver,
+ &driver_attr_notifier_register);
+}
diff --git a/drivers/s390/net/qeth_tso.c b/drivers/s390/net/qeth_tso.c
new file mode 100644
index 0000000..c919762
--- /dev/null
+++ b/drivers/s390/net/qeth_tso.c
@@ -0,0 +1,285 @@
+/*
+ * linux/drivers/s390/net/qeth_tso.c ($Revision: 1.6 $)
+ *
+ * Header file for qeth TCP Segmentation Offload support.
+ *
+ * Copyright 2004 IBM Corporation
+ *
+ * Author(s): Frank Pavlic <pavlic@de.ibm.com>
+ *
+ * $Revision: 1.6 $ $Date: 2005/03/24 09:04:18 $
+ *
+ */
+
+#include <linux/skbuff.h>
+#include <linux/tcp.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <net/ip6_checksum.h>
+#include "qeth.h"
+#include "qeth_mpc.h"
+#include "qeth_tso.h"
+
+/**
+ * skb already partially prepared
+ * classic qdio header in skb->data
+ * */
+static inline struct qeth_hdr_tso *
+qeth_tso_prepare_skb(struct qeth_card *card, struct sk_buff **skb)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace, 5, "tsoprsk");
+ rc = qeth_realloc_headroom(card, skb,sizeof(struct qeth_hdr_ext_tso));
+ if (rc)
+ return NULL;
+
+ return qeth_push_skb(card, skb, sizeof(struct qeth_hdr_ext_tso));
+}
+
+/**
+ * fill header for a TSO packet
+ */
+static inline void
+qeth_tso_fill_header(struct qeth_card *card, struct sk_buff *skb)
+{
+ struct qeth_hdr_tso *hdr;
+ struct tcphdr *tcph;
+ struct iphdr *iph;
+
+ QETH_DBF_TEXT(trace, 5, "tsofhdr");
+
+ hdr = (struct qeth_hdr_tso *) skb->data;
+ iph = skb->nh.iph;
+ tcph = skb->h.th;
+ /*fix header to TSO values ...*/
+ hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
+ /*set values which are fix for the first approach ...*/
+ hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
+ hdr->ext.imb_hdr_no = 1;
+ hdr->ext.hdr_type = 1;
+ hdr->ext.hdr_version = 1;
+ hdr->ext.hdr_len = 28;
+ /*insert non-fix values */
+ hdr->ext.mss = skb_shinfo(skb)->tso_size;
+ hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
+ hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
+ sizeof(struct qeth_hdr_tso));
+}
+
+/**
+ * change some header values as requested by hardware
+ */
+static inline void
+qeth_tso_set_tcpip_header(struct qeth_card *card, struct sk_buff *skb)
+{
+ struct iphdr *iph;
+ struct ipv6hdr *ip6h;
+ struct tcphdr *tcph;
+
+ iph = skb->nh.iph;
+ ip6h = skb->nh.ipv6h;
+ tcph = skb->h.th;
+
+ tcph->check = 0;
+ if (skb->protocol == ETH_P_IPV6) {
+ ip6h->payload_len = 0;
+ tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+ 0, IPPROTO_TCP, 0);
+ return;
+ }
+ /*OSA want us to set these values ...*/
+ tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+ 0, IPPROTO_TCP, 0);
+ iph->tot_len = 0;
+ iph->check = 0;
+}
+
+static inline struct qeth_hdr_tso *
+qeth_tso_prepare_packet(struct qeth_card *card, struct sk_buff *skb,
+ int ipv, int cast_type)
+{
+ struct qeth_hdr_tso *hdr;
+ int rc = 0;
+
+ QETH_DBF_TEXT(trace, 5, "tsoprep");
+
+ /*get headroom for tso qdio header */
+ hdr = (struct qeth_hdr_tso *) qeth_tso_prepare_skb(card, &skb);
+ if (hdr == NULL) {
+ QETH_DBF_TEXT_(trace, 4, "2err%d", rc);
+ return NULL;
+ }
+ memset(hdr, 0, sizeof(struct qeth_hdr_tso));
+ /*fill first 32 bytes of qdio header as used
+ *FIXME: TSO has two struct members
+ * with different names but same size
+ * */
+ qeth_fill_header(card, &hdr->hdr, skb, ipv, cast_type);
+ qeth_tso_fill_header(card, skb);
+ qeth_tso_set_tcpip_header(card, skb);
+ return hdr;
+}
+
+static inline int
+qeth_tso_get_queue_buffer(struct qeth_qdio_out_q *queue)
+{
+ struct qeth_qdio_out_buffer *buffer;
+ int flush_cnt = 0;
+
+ QETH_DBF_TEXT(trace, 5, "tsobuf");
+
+ /* force to non-packing*/
+ if (queue->do_pack)
+ queue->do_pack = 0;
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ /* get a new buffer if current is already in use*/
+ if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
+ (buffer->next_element_to_fill > 0)) {
+ atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
+ queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ flush_cnt++;
+ }
+ return flush_cnt;
+}
+
+static inline void
+__qeth_tso_fill_buffer_frag(struct qeth_qdio_out_buffer *buf,
+ struct sk_buff *skb)
+{
+ struct skb_frag_struct *frag;
+ struct qdio_buffer *buffer;
+ int fragno, cnt, element;
+ unsigned long addr;
+
+ QETH_DBF_TEXT(trace, 6, "tsfilfrg");
+
+ /*initialize variables ...*/
+ fragno = skb_shinfo(skb)->nr_frags;
+ buffer = buf->buffer;
+ element = buf->next_element_to_fill;
+ /*fill buffer elements .....*/
+ for (cnt = 0; cnt < fragno; cnt++) {
+ frag = &skb_shinfo(skb)->frags[cnt];
+ addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
+ frag->page_offset;
+ buffer->element[element].addr = (char *)addr;
+ buffer->element[element].length = frag->size;
+ if (cnt < (fragno - 1))
+ buffer->element[element].flags =
+ SBAL_FLAGS_MIDDLE_FRAG;
+ else
+ buffer->element[element].flags =
+ SBAL_FLAGS_LAST_FRAG;
+ element++;
+ }
+ buf->next_element_to_fill = element;
+}
+
+static inline int
+qeth_tso_fill_buffer(struct qeth_qdio_out_buffer *buf,
+ struct sk_buff *skb)
+{
+ int length, length_here, element;
+ int hdr_len;
+ struct qdio_buffer *buffer;
+ struct qeth_hdr_tso *hdr;
+ char *data;
+
+ QETH_DBF_TEXT(trace, 3, "tsfilbuf");
+
+ /*increment user count and queue skb ...*/
+ atomic_inc(&skb->users);
+ skb_queue_tail(&buf->skb_list, skb);
+
+ /*initialize all variables...*/
+ buffer = buf->buffer;
+ hdr = (struct qeth_hdr_tso *)skb->data;
+ hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
+ data = skb->data + hdr_len;
+ length = skb->len - hdr_len;
+ element = buf->next_element_to_fill;
+ /*fill first buffer entry only with header information */
+ buffer->element[element].addr = skb->data;
+ buffer->element[element].length = hdr_len;
+ buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
+ buf->next_element_to_fill++;
+
+ if (skb_shinfo(skb)->nr_frags > 0) {
+ __qeth_tso_fill_buffer_frag(buf, skb);
+ goto out;
+ }
+
+ /*start filling buffer entries ...*/
+ element++;
+ while (length > 0) {
+ /* length_here is the remaining amount of data in this page */
+ length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
+ if (length < length_here)
+ length_here = length;
+ buffer->element[element].addr = data;
+ buffer->element[element].length = length_here;
+ length -= length_here;
+ if (!length)
+ buffer->element[element].flags =
+ SBAL_FLAGS_LAST_FRAG;
+ else
+ buffer->element[element].flags =
+ SBAL_FLAGS_MIDDLE_FRAG;
+ data += length_here;
+ element++;
+ }
+ /*set the buffer to primed ...*/
+ buf->next_element_to_fill = element;
+out:
+ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
+ return 1;
+}
+
+int
+qeth_tso_send_packet(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_qdio_out_q *queue, int ipv, int cast_type)
+{
+ int flush_cnt = 0;
+ struct qeth_hdr_tso *hdr;
+ struct qeth_qdio_out_buffer *buffer;
+ int start_index;
+
+ QETH_DBF_TEXT(trace, 3, "tsosend");
+
+ if (!(hdr = qeth_tso_prepare_packet(card, skb, ipv, cast_type)))
+ return -ENOMEM;
+ /*check if skb fits in one SBAL ...*/
+ if (!(qeth_get_elements_no(card, (void*)hdr, skb)))
+ return -EINVAL;
+ /*lock queue, force switching to non-packing and send it ...*/
+ while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED,
+ QETH_OUT_Q_LOCKED,
+ &queue->state));
+ start_index = queue->next_buf_to_fill;
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ /*check if card is too busy ...*/
+ if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY){
+ card->stats.tx_dropped++;
+ goto out;
+ }
+ /*let's force to non-packing and get a new SBAL*/
+ flush_cnt += qeth_tso_get_queue_buffer(queue);
+ buffer = &queue->bufs[queue->next_buf_to_fill];
+ if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
+ card->stats.tx_dropped++;
+ goto out;
+ }
+ flush_cnt += qeth_tso_fill_buffer(buffer, skb);
+ queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
+ QDIO_MAX_BUFFERS_PER_Q;
+out:
+ atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
+ if (flush_cnt)
+ qeth_flush_buffers(queue, 0, start_index, flush_cnt);
+ /*do some statistics */
+ card->stats.tx_packets++;
+ card->stats.tx_bytes += skb->len;
+ return 0;
+}
diff --git a/drivers/s390/net/qeth_tso.h b/drivers/s390/net/qeth_tso.h
new file mode 100644
index 0000000..83504de
--- /dev/null
+++ b/drivers/s390/net/qeth_tso.h
@@ -0,0 +1,58 @@
+/*
+ * linux/drivers/s390/net/qeth_tso.h ($Revision: 1.4 $)
+ *
+ * Header file for qeth TCP Segmentation Offload support.
+ *
+ * Copyright 2004 IBM Corporation
+ *
+ * Author(s): Frank Pavlic <pavlic@de.ibm.com>
+ *
+ * $Revision: 1.4 $ $Date: 2005/03/24 09:04:18 $
+ *
+ */
+#ifndef __QETH_TSO_H__
+#define __QETH_TSO_H__
+
+
+extern int
+qeth_tso_send_packet(struct qeth_card *, struct sk_buff *,
+ struct qeth_qdio_out_q *, int , int);
+
+struct qeth_hdr_ext_tso {
+ __u16 hdr_tot_len;
+ __u8 imb_hdr_no;
+ __u8 reserved;
+ __u8 hdr_type;
+ __u8 hdr_version;
+ __u16 hdr_len;
+ __u32 payload_len;
+ __u16 mss;
+ __u16 dg_hdr_len;
+ __u8 padding[16];
+} __attribute__ ((packed));
+
+struct qeth_hdr_tso {
+ struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
+ struct qeth_hdr_ext_tso ext;
+} __attribute__ ((packed));
+
+/*some helper functions*/
+
+static inline int
+qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb)
+{
+ int elements_needed = 0;
+
+ if (skb_shinfo(skb)->nr_frags > 0)
+ elements_needed = (skb_shinfo(skb)->nr_frags + 1);
+ if (elements_needed == 0 )
+ elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
+ + skb->len) >> PAGE_SHIFT);
+ if (elements_needed > QETH_MAX_BUFFER_ELEMENTS(card)){
+ PRINT_ERR("qeth_do_send_packet: invalid size of "
+ "IP packet. Discarded.");
+ return 0;
+ }
+ return elements_needed;
+}
+#endif /* __QETH_TSO_H__ */
diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
new file mode 100644
index 0000000..a3d2858
--- /dev/null
+++ b/drivers/s390/net/smsgiucv.c
@@ -0,0 +1,180 @@
+/*
+ * IUCV special message driver
+ *
+ * Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <asm/cpcmd.h>
+#include <asm/ebcdic.h>
+
+#include "iucv.h"
+
+struct smsg_callback {
+ struct list_head list;
+ char *prefix;
+ int len;
+ void (*callback)(char *str);
+};
+
+MODULE_AUTHOR
+ ("(C) 2003 IBM Corporation by Martin Schwidefsky (schwidefsky@de.ibm.com)");
+MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
+
+static iucv_handle_t smsg_handle;
+static unsigned short smsg_pathid;
+static DEFINE_SPINLOCK(smsg_list_lock);
+static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list);
+
+static void
+smsg_connection_complete(iucv_ConnectionComplete *eib, void *pgm_data)
+{
+}
+
+
+static void
+smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
+{
+ struct smsg_callback *cb;
+ unsigned char *msg;
+ unsigned short len;
+ int rc;
+
+ len = eib->ln1msg2.ipbfln1f;
+ msg = kmalloc(len + 1, GFP_ATOMIC|GFP_DMA);
+ if (!msg) {
+ iucv_reject(eib->ippathid, eib->ipmsgid, eib->iptrgcls);
+ return;
+ }
+ rc = iucv_receive(eib->ippathid, eib->ipmsgid, eib->iptrgcls,
+ msg, len, 0, 0, 0);
+ if (rc == 0) {
+ msg[len] = 0;
+ EBCASC(msg, len);
+ spin_lock(&smsg_list_lock);
+ list_for_each_entry(cb, &smsg_list, list)
+ if (strncmp(msg + 8, cb->prefix, cb->len) == 0) {
+ cb->callback(msg + 8);
+ break;
+ }
+ spin_unlock(&smsg_list_lock);
+ }
+ kfree(msg);
+}
+
+static iucv_interrupt_ops_t smsg_ops = {
+ .ConnectionComplete = smsg_connection_complete,
+ .MessagePending = smsg_message_pending,
+};
+
+static struct device_driver smsg_driver = {
+ .name = "SMSGIUCV",
+ .bus = &iucv_bus,
+};
+
+int
+smsg_register_callback(char *prefix, void (*callback)(char *str))
+{
+ struct smsg_callback *cb;
+
+ cb = kmalloc(sizeof(struct smsg_callback), GFP_KERNEL);
+ if (!cb)
+ return -ENOMEM;
+ cb->prefix = prefix;
+ cb->len = strlen(prefix);
+ cb->callback = callback;
+ spin_lock(&smsg_list_lock);
+ list_add_tail(&cb->list, &smsg_list);
+ spin_unlock(&smsg_list_lock);
+ return 0;
+}
+
+void
+smsg_unregister_callback(char *prefix, void (*callback)(char *str))
+{
+ struct smsg_callback *cb, *tmp;
+
+ spin_lock(&smsg_list_lock);
+ cb = 0;
+ list_for_each_entry(tmp, &smsg_list, list)
+ if (tmp->callback == callback &&
+ strcmp(tmp->prefix, prefix) == 0) {
+ cb = tmp;
+ list_del(&cb->list);
+ break;
+ }
+ spin_unlock(&smsg_list_lock);
+ kfree(cb);
+}
+
+static void __exit
+smsg_exit(void)
+{
+ if (smsg_handle > 0) {
+ cpcmd("SET SMSG OFF", 0, 0);
+ iucv_sever(smsg_pathid, 0);
+ iucv_unregister_program(smsg_handle);
+ driver_unregister(&smsg_driver);
+ }
+ return;
+}
+
+static int __init
+smsg_init(void)
+{
+ static unsigned char pgmmask[24] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ };
+ int rc;
+
+ rc = driver_register(&smsg_driver);
+ if (rc != 0) {
+ printk(KERN_ERR "SMSGIUCV: failed to register driver.\n");
+ return rc;
+ }
+ smsg_handle = iucv_register_program("SMSGIUCV ", "*MSG ",
+ pgmmask, &smsg_ops, 0);
+ if (!smsg_handle) {
+ printk(KERN_ERR "SMSGIUCV: failed to register to iucv");
+ driver_unregister(&smsg_driver);
+ return -EIO; /* better errno ? */
+ }
+ rc = iucv_connect (&smsg_pathid, 1, 0, "*MSG ", 0, 0, 0, 0,
+ smsg_handle, 0);
+ if (rc) {
+ printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG");
+ iucv_unregister_program(smsg_handle);
+ driver_unregister(&smsg_driver);
+ smsg_handle = 0;
+ return -EIO;
+ }
+ cpcmd("SET SMSG IUCV", 0, 0);
+ return 0;
+}
+
+module_init(smsg_init);
+module_exit(smsg_exit);
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(smsg_register_callback);
+EXPORT_SYMBOL(smsg_unregister_callback);
diff --git a/drivers/s390/net/smsgiucv.h b/drivers/s390/net/smsgiucv.h
new file mode 100644
index 0000000..04cd871
--- /dev/null
+++ b/drivers/s390/net/smsgiucv.h
@@ -0,0 +1,10 @@
+/*
+ * IUCV special message driver
+ *
+ * Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ */
+
+int smsg_register_callback(char *, void (*)(char *));
+void smsg_unregister_callback(char *, void (*)(char *));
+