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/net/pcmcia/3c589_cs.c b/drivers/net/pcmcia/3c589_cs.c
new file mode 100644
index 0000000..89abdda
--- /dev/null
+++ b/drivers/net/pcmcia/3c589_cs.c
@@ -0,0 +1,1081 @@
+/*======================================================================
+
+ A PCMCIA ethernet driver for the 3com 3c589 card.
+
+ Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
+
+ 3c589_cs.c 1.162 2001/10/13 00:08:50
+
+ The network driver code is based on Donald Becker's 3c589 code:
+
+ Written 1994 by Donald Becker.
+ Copyright 1993 United States Government as represented by the
+ Director, National Security Agency. This software may be used and
+ distributed according to the terms of the GNU General Public License,
+ incorporated herein by reference.
+ Donald Becker may be reached at becker@scyld.com
+
+ Updated for 2.5.x by Alan Cox <alan@redhat.com>
+
+======================================================================*/
+
+#define DRV_NAME "3c589_cs"
+#define DRV_VERSION "1.162-ac"
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/delay.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/ioport.h>
+#include <linux/bitops.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+/* To minimize the size of the driver source I only define operating
+ constants if they are used several times. You'll need the manual
+ if you want to understand driver details. */
+/* Offsets from base I/O address. */
+#define EL3_DATA 0x00
+#define EL3_TIMER 0x0a
+#define EL3_CMD 0x0e
+#define EL3_STATUS 0x0e
+
+#define EEPROM_READ 0x0080
+#define EEPROM_BUSY 0x8000
+
+#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
+
+/* The top five bits written to EL3_CMD are a command, the lower
+ 11 bits are the parameter, if applicable. */
+enum c509cmd {
+ TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
+ RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
+ TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
+ FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
+ SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
+ SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
+ StatsDisable = 22<<11, StopCoax = 23<<11,
+};
+
+enum c509status {
+ IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
+ TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
+ IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000
+};
+
+/* The SetRxFilter command accepts the following classes: */
+enum RxFilter {
+ RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
+};
+
+/* Register window 1 offsets, the window used in normal operation. */
+#define TX_FIFO 0x00
+#define RX_FIFO 0x00
+#define RX_STATUS 0x08
+#define TX_STATUS 0x0B
+#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
+
+#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
+#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
+#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
+#define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
+
+/* Time in jiffies before concluding Tx hung */
+#define TX_TIMEOUT ((400*HZ)/1000)
+
+struct el3_private {
+ dev_link_t link;
+ dev_node_t node;
+ struct net_device_stats stats;
+ /* For transceiver monitoring */
+ struct timer_list media;
+ u16 media_status;
+ u16 fast_poll;
+ unsigned long last_irq;
+ spinlock_t lock;
+};
+
+static char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
+
+/*====================================================================*/
+
+/* Module parameters */
+
+MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
+MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
+MODULE_LICENSE("GPL");
+
+#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
+
+/* Special hook for setting if_port when module is loaded */
+INT_MODULE_PARM(if_port, 0);
+
+#ifdef PCMCIA_DEBUG
+INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+static void tc589_config(dev_link_t *link);
+static void tc589_release(dev_link_t *link);
+static int tc589_event(event_t event, int priority,
+ event_callback_args_t *args);
+
+static u16 read_eeprom(kio_addr_t ioaddr, int index);
+static void tc589_reset(struct net_device *dev);
+static void media_check(unsigned long arg);
+static int el3_config(struct net_device *dev, struct ifmap *map);
+static int el3_open(struct net_device *dev);
+static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void update_stats(struct net_device *dev);
+static struct net_device_stats *el3_get_stats(struct net_device *dev);
+static int el3_rx(struct net_device *dev);
+static int el3_close(struct net_device *dev);
+static void el3_tx_timeout(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+static struct ethtool_ops netdev_ethtool_ops;
+
+static dev_info_t dev_info = "3c589_cs";
+
+static dev_link_t *tc589_attach(void);
+static void tc589_detach(dev_link_t *);
+
+static dev_link_t *dev_list;
+
+/*======================================================================
+
+ tc589_attach() creates an "instance" of the driver, allocating
+ local data structures for one device. The device is registered
+ with Card Services.
+
+======================================================================*/
+
+static dev_link_t *tc589_attach(void)
+{
+ struct el3_private *lp;
+ client_reg_t client_reg;
+ dev_link_t *link;
+ struct net_device *dev;
+ int ret;
+
+ DEBUG(0, "3c589_attach()\n");
+
+ /* Create new ethernet device */
+ dev = alloc_etherdev(sizeof(struct el3_private));
+ if (!dev)
+ return NULL;
+ lp = netdev_priv(dev);
+ link = &lp->link;
+ link->priv = dev;
+
+ spin_lock_init(&lp->lock);
+ link->io.NumPorts1 = 16;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+ link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+ link->irq.Handler = &el3_interrupt;
+ link->irq.Instance = dev;
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.Vcc = 50;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+ link->conf.ConfigIndex = 1;
+ link->conf.Present = PRESENT_OPTION;
+
+ /* The EL3-specific entries in the device structure. */
+ SET_MODULE_OWNER(dev);
+ dev->hard_start_xmit = &el3_start_xmit;
+ dev->set_config = &el3_config;
+ dev->get_stats = &el3_get_stats;
+ dev->set_multicast_list = &set_multicast_list;
+ dev->open = &el3_open;
+ dev->stop = &el3_close;
+#ifdef HAVE_TX_TIMEOUT
+ dev->tx_timeout = el3_tx_timeout;
+ dev->watchdog_timeo = TX_TIMEOUT;
+#endif
+ SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.EventMask =
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &tc589_event;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+ ret = pcmcia_register_client(&link->handle, &client_reg);
+ if (ret != 0) {
+ cs_error(link->handle, RegisterClient, ret);
+ tc589_detach(link);
+ return NULL;
+ }
+
+ return link;
+} /* tc589_attach */
+
+/*======================================================================
+
+ This deletes a driver "instance". The device is de-registered
+ with Card Services. If it has been released, all local data
+ structures are freed. Otherwise, the structures will be freed
+ when the device is released.
+
+======================================================================*/
+
+static void tc589_detach(dev_link_t *link)
+{
+ struct net_device *dev = link->priv;
+ dev_link_t **linkp;
+
+ DEBUG(0, "3c589_detach(0x%p)\n", link);
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link) break;
+ if (*linkp == NULL)
+ return;
+
+ if (link->dev)
+ unregister_netdev(dev);
+
+ if (link->state & DEV_CONFIG)
+ tc589_release(link);
+
+ if (link->handle)
+ pcmcia_deregister_client(link->handle);
+
+ /* Unlink device structure, free bits */
+ *linkp = link->next;
+ free_netdev(dev);
+} /* tc589_detach */
+
+/*======================================================================
+
+ tc589_config() is scheduled to run after a CARD_INSERTION event
+ is received, to configure the PCMCIA socket, and to make the
+ ethernet device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static void tc589_config(dev_link_t *link)
+{
+ client_handle_t handle = link->handle;
+ struct net_device *dev = link->priv;
+ struct el3_private *lp = netdev_priv(dev);
+ tuple_t tuple;
+ cisparse_t parse;
+ u16 buf[32], *phys_addr;
+ int last_fn, last_ret, i, j, multi = 0, fifo;
+ kio_addr_t ioaddr;
+ char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
+
+ DEBUG(0, "3c589_config(0x%p)\n", link);
+
+ phys_addr = (u16 *)dev->dev_addr;
+ tuple.Attributes = 0;
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ tuple.TupleData = (cisdata_t *)buf;
+ tuple.TupleDataMax = sizeof(buf);
+ tuple.TupleOffset = 0;
+ CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+ CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /* Is this a 3c562? */
+ tuple.DesiredTuple = CISTPL_MANFID;
+ tuple.Attributes = TUPLE_RETURN_COMMON;
+ if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
+ (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) {
+ if (le16_to_cpu(buf[0]) != MANFID_3COM)
+ printk(KERN_INFO "3c589_cs: hmmm, is this really a "
+ "3Com card??\n");
+ multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
+ }
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ /* For the 3c562, the base address must be xx00-xx7f */
+ link->io.IOAddrLines = 16;
+ for (i = j = 0; j < 0x400; j += 0x10) {
+ if (multi && (j & 0x80)) continue;
+ link->io.BasePort1 = j ^ 0x300;
+ i = pcmcia_request_io(link->handle, &link->io);
+ if (i == CS_SUCCESS) break;
+ }
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestIO, i);
+ goto failed;
+ }
+ CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
+ CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+
+ dev->irq = link->irq.AssignedIRQ;
+ dev->base_addr = link->io.BasePort1;
+ ioaddr = dev->base_addr;
+ EL3WINDOW(0);
+
+ /* The 3c589 has an extra EEPROM for configuration info, including
+ the hardware address. The 3c562 puts the address in the CIS. */
+ tuple.DesiredTuple = 0x88;
+ if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
+ pcmcia_get_tuple_data(handle, &tuple);
+ for (i = 0; i < 3; i++)
+ phys_addr[i] = htons(buf[i]);
+ } else {
+ for (i = 0; i < 3; i++)
+ phys_addr[i] = htons(read_eeprom(ioaddr, i));
+ if (phys_addr[0] == 0x6060) {
+ printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
+ "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
+ goto failed;
+ }
+ }
+
+ /* The address and resource configuration register aren't loaded from
+ the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
+ outw(0x3f00, ioaddr + 8);
+ fifo = inl(ioaddr);
+
+ /* The if_port symbol can be set when the module is loaded */
+ if ((if_port >= 0) && (if_port <= 3))
+ dev->if_port = if_port;
+ else
+ printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
+
+ link->dev = &lp->node;
+ link->state &= ~DEV_CONFIG_PENDING;
+ SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+
+ if (register_netdev(dev) != 0) {
+ printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
+ link->dev = NULL;
+ goto failed;
+ }
+
+ strcpy(lp->node.dev_name, dev->name);
+
+ printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
+ dev->name, (multi ? "562" : "589"), dev->base_addr,
+ dev->irq);
+ for (i = 0; i < 6; i++)
+ printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
+ printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
+ (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
+ if_names[dev->if_port]);
+ return;
+
+cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+failed:
+ tc589_release(link);
+ return;
+
+} /* tc589_config */
+
+/*======================================================================
+
+ After a card is removed, tc589_release() will unregister the net
+ device, and release the PCMCIA configuration. If the device is
+ still open, this will be postponed until it is closed.
+
+======================================================================*/
+
+static void tc589_release(dev_link_t *link)
+{
+ DEBUG(0, "3c589_release(0x%p)\n", link);
+
+ pcmcia_release_configuration(link->handle);
+ pcmcia_release_io(link->handle, &link->io);
+ pcmcia_release_irq(link->handle, &link->irq);
+
+ link->state &= ~DEV_CONFIG;
+}
+
+/*======================================================================
+
+ The card status event handler. Mostly, this schedules other
+ stuff to run after an event is received. A CARD_REMOVAL event
+ also sets some flags to discourage the net drivers from trying
+ to talk to the card any more.
+
+======================================================================*/
+
+static int tc589_event(event_t event, int priority,
+ event_callback_args_t *args)
+{
+ dev_link_t *link = args->client_data;
+ struct net_device *dev = link->priv;
+
+ DEBUG(1, "3c589_event(0x%06x)\n", event);
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ link->state &= ~DEV_PRESENT;
+ if (link->state & DEV_CONFIG)
+ netif_device_detach(dev);
+ break;
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ tc589_config(link);
+ break;
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ if (link->state & DEV_CONFIG) {
+ if (link->open)
+ netif_device_detach(dev);
+ pcmcia_release_configuration(link->handle);
+ }
+ break;
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (link->state & DEV_CONFIG) {
+ pcmcia_request_configuration(link->handle, &link->conf);
+ if (link->open) {
+ tc589_reset(dev);
+ netif_device_attach(dev);
+ }
+ }
+ break;
+ }
+ return 0;
+} /* tc589_event */
+
+/*====================================================================*/
+
+/*
+ Use this for commands that may take time to finish
+*/
+static void tc589_wait_for_completion(struct net_device *dev, int cmd)
+{
+ int i = 100;
+ outw(cmd, dev->base_addr + EL3_CMD);
+ while (--i > 0)
+ if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
+ if (i == 0)
+ printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
+ dev->name, cmd);
+}
+
+/*
+ Read a word from the EEPROM using the regular EEPROM access register.
+ Assume that we are in register window zero.
+*/
+static u16 read_eeprom(kio_addr_t ioaddr, int index)
+{
+ int i;
+ outw(EEPROM_READ + index, ioaddr + 10);
+ /* Reading the eeprom takes 162 us */
+ for (i = 1620; i >= 0; i--)
+ if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
+ break;
+ return inw(ioaddr + 12);
+}
+
+/*
+ Set transceiver type, perhaps to something other than what the user
+ specified in dev->if_port.
+*/
+static void tc589_set_xcvr(struct net_device *dev, int if_port)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr = dev->base_addr;
+
+ EL3WINDOW(0);
+ switch (if_port) {
+ case 0: case 1: outw(0, ioaddr + 6); break;
+ case 2: outw(3<<14, ioaddr + 6); break;
+ case 3: outw(1<<14, ioaddr + 6); break;
+ }
+ /* On PCMCIA, this just turns on the LED */
+ outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
+ /* 10baseT interface, enable link beat and jabber check. */
+ EL3WINDOW(4);
+ outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
+ EL3WINDOW(1);
+ if (if_port == 2)
+ lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
+ else
+ lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
+}
+
+static void dump_status(struct net_device *dev)
+{
+ kio_addr_t ioaddr = dev->base_addr;
+ EL3WINDOW(1);
+ printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
+ "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
+ inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
+ inw(ioaddr+TX_FREE));
+ EL3WINDOW(4);
+ printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
+ " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
+ inw(ioaddr+0x08), inw(ioaddr+0x0a));
+ EL3WINDOW(1);
+}
+
+/* Reset and restore all of the 3c589 registers. */
+static void tc589_reset(struct net_device *dev)
+{
+ kio_addr_t ioaddr = dev->base_addr;
+ int i;
+
+ EL3WINDOW(0);
+ outw(0x0001, ioaddr + 4); /* Activate board. */
+ outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
+
+ /* Set the station address in window 2. */
+ EL3WINDOW(2);
+ for (i = 0; i < 6; i++)
+ outb(dev->dev_addr[i], ioaddr + i);
+
+ tc589_set_xcvr(dev, dev->if_port);
+
+ /* Switch to the stats window, and clear all stats by reading. */
+ outw(StatsDisable, ioaddr + EL3_CMD);
+ EL3WINDOW(6);
+ for (i = 0; i < 9; i++)
+ inb(ioaddr+i);
+ inw(ioaddr + 10);
+ inw(ioaddr + 12);
+
+ /* Switch to register set 1 for normal use. */
+ EL3WINDOW(1);
+
+ /* Accept b-cast and phys addr only. */
+ outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
+ outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
+ outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
+ outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
+ /* Allow status bits to be seen. */
+ outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
+ /* Ack all pending events, and set active indicator mask. */
+ outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
+ ioaddr + EL3_CMD);
+ outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
+ | AdapterFailure, ioaddr + EL3_CMD);
+}
+
+static void netdev_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, DRV_NAME);
+ strcpy(info->version, DRV_VERSION);
+ sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
+}
+
+#ifdef PCMCIA_DEBUG
+static u32 netdev_get_msglevel(struct net_device *dev)
+{
+ return pc_debug;
+}
+
+static void netdev_set_msglevel(struct net_device *dev, u32 level)
+{
+ pc_debug = level;
+}
+#endif /* PCMCIA_DEBUG */
+
+static struct ethtool_ops netdev_ethtool_ops = {
+ .get_drvinfo = netdev_get_drvinfo,
+#ifdef PCMCIA_DEBUG
+ .get_msglevel = netdev_get_msglevel,
+ .set_msglevel = netdev_set_msglevel,
+#endif /* PCMCIA_DEBUG */
+};
+
+static int el3_config(struct net_device *dev, struct ifmap *map)
+{
+ if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
+ if (map->port <= 3) {
+ dev->if_port = map->port;
+ printk(KERN_INFO "%s: switched to %s port\n",
+ dev->name, if_names[dev->if_port]);
+ tc589_set_xcvr(dev, dev->if_port);
+ } else
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int el3_open(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ dev_link_t *link = &lp->link;
+
+ if (!DEV_OK(link))
+ return -ENODEV;
+
+ link->open++;
+ netif_start_queue(dev);
+
+ tc589_reset(dev);
+ init_timer(&lp->media);
+ lp->media.function = &media_check;
+ lp->media.data = (unsigned long) dev;
+ lp->media.expires = jiffies + HZ;
+ add_timer(&lp->media);
+
+ DEBUG(1, "%s: opened, status %4.4x.\n",
+ dev->name, inw(dev->base_addr + EL3_STATUS));
+
+ return 0;
+}
+
+static void el3_tx_timeout(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr = dev->base_addr;
+
+ printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
+ dump_status(dev);
+ lp->stats.tx_errors++;
+ dev->trans_start = jiffies;
+ /* Issue TX_RESET and TX_START commands. */
+ tc589_wait_for_completion(dev, TxReset);
+ outw(TxEnable, ioaddr + EL3_CMD);
+ netif_wake_queue(dev);
+}
+
+static void pop_tx_status(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr = dev->base_addr;
+ int i;
+
+ /* Clear the Tx status stack. */
+ for (i = 32; i > 0; i--) {
+ u_char tx_status = inb(ioaddr + TX_STATUS);
+ if (!(tx_status & 0x84)) break;
+ /* reset transmitter on jabber error or underrun */
+ if (tx_status & 0x30)
+ tc589_wait_for_completion(dev, TxReset);
+ if (tx_status & 0x38) {
+ DEBUG(1, "%s: transmit error: status 0x%02x\n",
+ dev->name, tx_status);
+ outw(TxEnable, ioaddr + EL3_CMD);
+ lp->stats.tx_aborted_errors++;
+ }
+ outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
+ }
+}
+
+static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ kio_addr_t ioaddr = dev->base_addr;
+ struct el3_private *priv = netdev_priv(dev);
+
+ DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
+ "status %4.4x.\n", dev->name, (long)skb->len,
+ inw(ioaddr + EL3_STATUS));
+
+ priv->stats.tx_bytes += skb->len;
+
+ /* Put out the doubleword header... */
+ outw(skb->len, ioaddr + TX_FIFO);
+ outw(0x00, ioaddr + TX_FIFO);
+ /* ... and the packet rounded to a doubleword. */
+ outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
+
+ dev->trans_start = jiffies;
+ if (inw(ioaddr + TX_FREE) <= 1536) {
+ netif_stop_queue(dev);
+ /* Interrupt us when the FIFO has room for max-sized packet. */
+ outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
+ }
+
+ dev_kfree_skb(skb);
+ pop_tx_status(dev);
+
+ return 0;
+}
+
+/* The EL3 interrupt handler. */
+static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr;
+ __u16 status;
+ int i = 0, handled = 1;
+
+ if (!netif_device_present(dev))
+ return IRQ_NONE;
+
+ ioaddr = dev->base_addr;
+
+ DEBUG(3, "%s: interrupt, status %4.4x.\n",
+ dev->name, inw(ioaddr + EL3_STATUS));
+
+ spin_lock(&lp->lock);
+ while ((status = inw(ioaddr + EL3_STATUS)) &
+ (IntLatch | RxComplete | StatsFull)) {
+ if ((status & 0xe000) != 0x2000) {
+ DEBUG(1, "%s: interrupt from dead card\n", dev->name);
+ handled = 0;
+ break;
+ }
+
+ if (status & RxComplete)
+ el3_rx(dev);
+
+ if (status & TxAvailable) {
+ DEBUG(3, " TX room bit was handled.\n");
+ /* There's room in the FIFO for a full-sized packet. */
+ outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
+ netif_wake_queue(dev);
+ }
+
+ if (status & TxComplete)
+ pop_tx_status(dev);
+
+ if (status & (AdapterFailure | RxEarly | StatsFull)) {
+ /* Handle all uncommon interrupts. */
+ if (status & StatsFull) /* Empty statistics. */
+ update_stats(dev);
+ if (status & RxEarly) { /* Rx early is unused. */
+ el3_rx(dev);
+ outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
+ }
+ if (status & AdapterFailure) {
+ u16 fifo_diag;
+ EL3WINDOW(4);
+ fifo_diag = inw(ioaddr + 4);
+ EL3WINDOW(1);
+ printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
+ " register %04x.\n", dev->name, fifo_diag);
+ if (fifo_diag & 0x0400) {
+ /* Tx overrun */
+ tc589_wait_for_completion(dev, TxReset);
+ outw(TxEnable, ioaddr + EL3_CMD);
+ }
+ if (fifo_diag & 0x2000) {
+ /* Rx underrun */
+ tc589_wait_for_completion(dev, RxReset);
+ set_multicast_list(dev);
+ outw(RxEnable, ioaddr + EL3_CMD);
+ }
+ outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
+ }
+ }
+
+ if (++i > 10) {
+ printk(KERN_ERR "%s: infinite loop in interrupt, "
+ "status %4.4x.\n", dev->name, status);
+ /* Clear all interrupts */
+ outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
+ break;
+ }
+ /* Acknowledge the IRQ. */
+ outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
+ }
+
+ lp->last_irq = jiffies;
+ spin_unlock(&lp->lock);
+ DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
+ dev->name, inw(ioaddr + EL3_STATUS));
+ return IRQ_RETVAL(handled);
+}
+
+static void media_check(unsigned long arg)
+{
+ struct net_device *dev = (struct net_device *)(arg);
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr = dev->base_addr;
+ u16 media, errs;
+ unsigned long flags;
+
+ if (!netif_device_present(dev)) goto reschedule;
+
+ EL3WINDOW(1);
+ /* Check for pending interrupt with expired latency timer: with
+ this, we can limp along even if the interrupt is blocked */
+ if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
+ (inb(ioaddr + EL3_TIMER) == 0xff)) {
+ if (!lp->fast_poll)
+ printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
+ el3_interrupt(dev->irq, lp, NULL);
+ lp->fast_poll = HZ;
+ }
+ if (lp->fast_poll) {
+ lp->fast_poll--;
+ lp->media.expires = jiffies + HZ/100;
+ add_timer(&lp->media);
+ return;
+ }
+
+ /* lp->lock guards the EL3 window. Window should always be 1 except
+ when the lock is held */
+ spin_lock_irqsave(&lp->lock, flags);
+ EL3WINDOW(4);
+ media = inw(ioaddr+WN4_MEDIA) & 0xc810;
+
+ /* Ignore collisions unless we've had no irq's recently */
+ if (jiffies - lp->last_irq < HZ) {
+ media &= ~0x0010;
+ } else {
+ /* Try harder to detect carrier errors */
+ EL3WINDOW(6);
+ outw(StatsDisable, ioaddr + EL3_CMD);
+ errs = inb(ioaddr + 0);
+ outw(StatsEnable, ioaddr + EL3_CMD);
+ lp->stats.tx_carrier_errors += errs;
+ if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
+ }
+
+ if (media != lp->media_status) {
+ if ((media & lp->media_status & 0x8000) &&
+ ((lp->media_status ^ media) & 0x0800))
+ printk(KERN_INFO "%s: %s link beat\n", dev->name,
+ (lp->media_status & 0x0800 ? "lost" : "found"));
+ else if ((media & lp->media_status & 0x4000) &&
+ ((lp->media_status ^ media) & 0x0010))
+ printk(KERN_INFO "%s: coax cable %s\n", dev->name,
+ (lp->media_status & 0x0010 ? "ok" : "problem"));
+ if (dev->if_port == 0) {
+ if (media & 0x8000) {
+ if (media & 0x0800)
+ printk(KERN_INFO "%s: flipped to 10baseT\n",
+ dev->name);
+ else
+ tc589_set_xcvr(dev, 2);
+ } else if (media & 0x4000) {
+ if (media & 0x0010)
+ tc589_set_xcvr(dev, 1);
+ else
+ printk(KERN_INFO "%s: flipped to 10base2\n",
+ dev->name);
+ }
+ }
+ lp->media_status = media;
+ }
+
+ EL3WINDOW(1);
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+reschedule:
+ lp->media.expires = jiffies + HZ;
+ add_timer(&lp->media);
+}
+
+static struct net_device_stats *el3_get_stats(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ unsigned long flags;
+ dev_link_t *link = &lp->link;
+
+ if (DEV_OK(link)) {
+ spin_lock_irqsave(&lp->lock, flags);
+ update_stats(dev);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ }
+ return &lp->stats;
+}
+
+/*
+ Update statistics. We change to register window 6, so this should be run
+ single-threaded if the device is active. This is expected to be a rare
+ operation, and it's simpler for the rest of the driver to assume that
+ window 1 is always valid rather than use a special window-state variable.
+
+ Caller must hold the lock for this
+*/
+static void update_stats(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr = dev->base_addr;
+
+ DEBUG(2, "%s: updating the statistics.\n", dev->name);
+ /* Turn off statistics updates while reading. */
+ outw(StatsDisable, ioaddr + EL3_CMD);
+ /* Switch to the stats window, and read everything. */
+ EL3WINDOW(6);
+ lp->stats.tx_carrier_errors += inb(ioaddr + 0);
+ lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
+ /* Multiple collisions. */ inb(ioaddr + 2);
+ lp->stats.collisions += inb(ioaddr + 3);
+ lp->stats.tx_window_errors += inb(ioaddr + 4);
+ lp->stats.rx_fifo_errors += inb(ioaddr + 5);
+ lp->stats.tx_packets += inb(ioaddr + 6);
+ /* Rx packets */ inb(ioaddr + 7);
+ /* Tx deferrals */ inb(ioaddr + 8);
+ /* Rx octets */ inw(ioaddr + 10);
+ /* Tx octets */ inw(ioaddr + 12);
+
+ /* Back to window 1, and turn statistics back on. */
+ EL3WINDOW(1);
+ outw(StatsEnable, ioaddr + EL3_CMD);
+}
+
+static int el3_rx(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ kio_addr_t ioaddr = dev->base_addr;
+ int worklimit = 32;
+ short rx_status;
+
+ DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
+ dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
+ while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
+ (--worklimit >= 0)) {
+ if (rx_status & 0x4000) { /* Error, update stats. */
+ short error = rx_status & 0x3800;
+ lp->stats.rx_errors++;
+ switch (error) {
+ case 0x0000: lp->stats.rx_over_errors++; break;
+ case 0x0800: lp->stats.rx_length_errors++; break;
+ case 0x1000: lp->stats.rx_frame_errors++; break;
+ case 0x1800: lp->stats.rx_length_errors++; break;
+ case 0x2000: lp->stats.rx_frame_errors++; break;
+ case 0x2800: lp->stats.rx_crc_errors++; break;
+ }
+ } else {
+ short pkt_len = rx_status & 0x7ff;
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(pkt_len+5);
+
+ DEBUG(3, " Receiving packet size %d status %4.4x.\n",
+ pkt_len, rx_status);
+ if (skb != NULL) {
+ skb->dev = dev;
+ skb_reserve(skb, 2);
+ insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
+ (pkt_len+3)>>2);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ dev->last_rx = jiffies;
+ lp->stats.rx_packets++;
+ lp->stats.rx_bytes += pkt_len;
+ } else {
+ DEBUG(1, "%s: couldn't allocate a sk_buff of"
+ " size %d.\n", dev->name, pkt_len);
+ lp->stats.rx_dropped++;
+ }
+ }
+ /* Pop the top of the Rx FIFO */
+ tc589_wait_for_completion(dev, RxDiscard);
+ }
+ if (worklimit == 0)
+ printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
+ return 0;
+}
+
+static void set_multicast_list(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ dev_link_t *link = &lp->link;
+ kio_addr_t ioaddr = dev->base_addr;
+ u16 opts = SetRxFilter | RxStation | RxBroadcast;
+
+ if (!(DEV_OK(link))) return;
+ if (dev->flags & IFF_PROMISC)
+ opts |= RxMulticast | RxProm;
+ else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
+ opts |= RxMulticast;
+ outw(opts, ioaddr + EL3_CMD);
+}
+
+static int el3_close(struct net_device *dev)
+{
+ struct el3_private *lp = netdev_priv(dev);
+ dev_link_t *link = &lp->link;
+ kio_addr_t ioaddr = dev->base_addr;
+
+ DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
+
+ if (DEV_OK(link)) {
+ /* Turn off statistics ASAP. We update lp->stats below. */
+ outw(StatsDisable, ioaddr + EL3_CMD);
+
+ /* Disable the receiver and transmitter. */
+ outw(RxDisable, ioaddr + EL3_CMD);
+ outw(TxDisable, ioaddr + EL3_CMD);
+
+ if (dev->if_port == 2)
+ /* Turn off thinnet power. Green! */
+ outw(StopCoax, ioaddr + EL3_CMD);
+ else if (dev->if_port == 1) {
+ /* Disable link beat and jabber */
+ EL3WINDOW(4);
+ outw(0, ioaddr + WN4_MEDIA);
+ }
+
+ /* Switching back to window 0 disables the IRQ. */
+ EL3WINDOW(0);
+ /* But we explicitly zero the IRQ line select anyway. */
+ outw(0x0f00, ioaddr + WN0_IRQ);
+
+ /* Check if the card still exists */
+ if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
+ update_stats(dev);
+ }
+
+ link->open--;
+ netif_stop_queue(dev);
+ del_timer_sync(&lp->media);
+
+ return 0;
+}
+
+static struct pcmcia_driver tc589_driver = {
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = "3c589_cs",
+ },
+ .attach = tc589_attach,
+ .detach = tc589_detach,
+};
+
+static int __init init_tc589(void)
+{
+ return pcmcia_register_driver(&tc589_driver);
+}
+
+static void __exit exit_tc589(void)
+{
+ pcmcia_unregister_driver(&tc589_driver);
+ BUG_ON(dev_list != NULL);
+}
+
+module_init(init_tc589);
+module_exit(exit_tc589);