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/tokenring/tms380tr.c b/drivers/net/tokenring/tms380tr.c
new file mode 100644
index 0000000..df43b44
--- /dev/null
+++ b/drivers/net/tokenring/tms380tr.c
@@ -0,0 +1,2410 @@
+/*
+ * tms380tr.c: A network driver library for Texas Instruments TMS380-based
+ * Token Ring Adapters.
+ *
+ * Originally sktr.c: Written 1997 by Christoph Goos
+ *
+ * A fine result of the Linux Systems Network Architecture Project.
+ * http://www.linux-sna.org
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * The following modules are currently available for card support:
+ * - tmspci (Generic PCI card support)
+ * - abyss (Madge PCI support)
+ * - tmsisa (SysKonnect TR4/16 ISA)
+ *
+ * Sources:
+ * - The hardware related parts of this driver are take from
+ * the SysKonnect Token Ring driver for Windows NT.
+ * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
+ * driver, as well as the 'skeleton.c' driver by Donald Becker.
+ * - Also various other drivers in the linux source tree were taken
+ * as samples for some tasks.
+ * - TI TMS380 Second-Generation Token Ring User's Guide
+ * - TI datasheets for respective chips
+ * - David Hein at Texas Instruments
+ * - Various Madge employees
+ *
+ * Maintainer(s):
+ * JS Jay Schulist jschlst@samba.org
+ * CG Christoph Goos cgoos@syskonnect.de
+ * AF Adam Fritzler mid@auk.cx
+ * MLP Mike Phillips phillim@amtrak.com
+ * JF Jochen Friedrich jochen@scram.de
+ *
+ * Modification History:
+ * 29-Aug-97 CG Created
+ * 04-Apr-98 CG Fixed problems caused by tok_timer_check
+ * 10-Apr-98 CG Fixed lockups at cable disconnection
+ * 27-May-98 JS Formated to Linux Kernel Format
+ * 31-May-98 JS Hacked in PCI support
+ * 16-Jun-98 JS Modulized for multiple cards with one driver
+ * Sep-99 AF Renamed to tms380tr (supports more than SK's)
+ * 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support
+ * Fixed a bug causing double copies on PCI
+ * Fixed for new multicast stuff (2.2/2.3)
+ * 25-Sep-99 AF Uped TPL_NUM from 3 to 9
+ * Removed extraneous 'No free TPL'
+ * 22-Dec-99 AF Added Madge PCI Mk2 support and generalized
+ * parts of the initilization procedure.
+ * 30-Dec-99 AF Turned tms380tr into a library ala 8390.
+ * Madge support is provided in the abyss module
+ * Generic PCI support is in the tmspci module.
+ * 30-Nov-00 JF Updated PCI code to support IO MMU via
+ * pci_map_static(). Alpha uses this MMU for ISA
+ * as well.
+ * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some
+ * cleanup.
+ * 13-Jan-02 JF Add spinlock to fix race condition.
+ * 09-Nov-02 JF Fixed printks to not SPAM the console during
+ * normal operation.
+ * 30-Dec-02 JF Removed incorrect __init from
+ * tms380tr_init_card.
+ *
+ * To do:
+ * 1. Multi/Broadcast packet handling (this may have fixed itself)
+ * 2. Write a sktrisa module that includes the old ISA support (done)
+ * 3. Allow modules to load their own microcode
+ * 4. Speed up the BUD process -- freezing the kernel for 3+sec is
+ * quite unacceptable.
+ * 5. Still a few remaining stalls when the cable is unplugged.
+ */
+
+#ifdef MODULE
+static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
+#endif
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/trdevice.h>
+#include <linux/firmware.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+#include "tms380tr.h" /* Our Stuff */
+
+/* Use 0 for production, 1 for verification, 2 for debug, and
+ * 3 for very verbose debug.
+ */
+#ifndef TMS380TR_DEBUG
+#define TMS380TR_DEBUG 0
+#endif
+static unsigned int tms380tr_debug = TMS380TR_DEBUG;
+
+static struct device tms_device;
+
+/* Index to functions, as function prototypes.
+ * Alphabetical by function name.
+ */
+
+/* "A" */
+/* "B" */
+static int tms380tr_bringup_diags(struct net_device *dev);
+/* "C" */
+static void tms380tr_cancel_tx_queue(struct net_local* tp);
+static int tms380tr_chipset_init(struct net_device *dev);
+static void tms380tr_chk_irq(struct net_device *dev);
+static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
+static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
+static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
+int tms380tr_close(struct net_device *dev);
+static void tms380tr_cmd_status_irq(struct net_device *dev);
+/* "D" */
+static void tms380tr_disable_interrupts(struct net_device *dev);
+#if TMS380TR_DEBUG > 0
+static void tms380tr_dump(unsigned char *Data, int length);
+#endif
+/* "E" */
+static void tms380tr_enable_interrupts(struct net_device *dev);
+static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
+static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
+/* "F" */
+/* "G" */
+static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
+/* "H" */
+static int tms380tr_hardware_send_packet(struct sk_buff *skb,
+ struct net_device *dev);
+/* "I" */
+static int tms380tr_init_adapter(struct net_device *dev);
+static void tms380tr_init_ipb(struct net_local *tp);
+static void tms380tr_init_net_local(struct net_device *dev);
+static void tms380tr_init_opb(struct net_device *dev);
+/* "M" */
+/* "O" */
+int tms380tr_open(struct net_device *dev);
+static void tms380tr_open_adapter(struct net_device *dev);
+/* "P" */
+/* "R" */
+static void tms380tr_rcv_status_irq(struct net_device *dev);
+static int tms380tr_read_ptr(struct net_device *dev);
+static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
+ unsigned short Address, int Length);
+static int tms380tr_reset_adapter(struct net_device *dev);
+static void tms380tr_reset_interrupt(struct net_device *dev);
+static void tms380tr_ring_status_irq(struct net_device *dev);
+/* "S" */
+static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev);
+static void tms380tr_set_multicast_list(struct net_device *dev);
+static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
+/* "T" */
+static void tms380tr_timer_chk(unsigned long data);
+static void tms380tr_timer_end_wait(unsigned long data);
+static void tms380tr_tx_status_irq(struct net_device *dev);
+/* "U" */
+static void tms380tr_update_rcv_stats(struct net_local *tp,
+ unsigned char DataPtr[], unsigned int Length);
+/* "W" */
+void tms380tr_wait(unsigned long time);
+static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
+static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
+
+#define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg))
+#define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg))
+#define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg))
+#define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg))
+
+
+
+#if 0 /* TMS380TR_DEBUG > 0 */
+static int madgemc_sifprobe(struct net_device *dev)
+{
+ unsigned char old, chk1, chk2;
+
+ old = SIFREADB(SIFADR); /* Get the old SIFADR value */
+
+ chk1 = 0; /* Begin with check value 0 */
+ do {
+ madgemc_setregpage(dev, 0);
+ /* Write new SIFADR value */
+ SIFWRITEB(chk1, SIFADR);
+ chk2 = SIFREADB(SIFADR);
+ if (chk2 != chk1)
+ return -1;
+
+ madgemc_setregpage(dev, 1);
+ /* Read, invert and write */
+ chk2 = SIFREADB(SIFADD);
+ if (chk2 != chk1)
+ return -1;
+
+ madgemc_setregpage(dev, 0);
+ chk2 ^= 0x0FE;
+ SIFWRITEB(chk2, SIFADR);
+
+ /* Read, invert and compare */
+ madgemc_setregpage(dev, 1);
+ chk2 = SIFREADB(SIFADD);
+ madgemc_setregpage(dev, 0);
+ chk2 ^= 0x0FE;
+
+ if(chk1 != chk2)
+ return (-1); /* No adapter */
+ chk1 -= 2;
+ } while(chk1 != 0); /* Repeat 128 times (all byte values) */
+
+ madgemc_setregpage(dev, 0); /* sanity */
+ /* Restore the SIFADR value */
+ SIFWRITEB(old, SIFADR);
+
+ return (0);
+}
+#endif
+
+/*
+ * Open/initialize the board. This is called sometime after
+ * booting when the 'ifconfig' program is run.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is non-reboot way to recover if something goes wrong.
+ */
+int tms380tr_open(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ int err;
+
+ /* init the spinlock */
+ spin_lock_init(&tp->lock);
+ init_timer(&tp->timer);
+
+ /* Reset the hardware here. Don't forget to set the station address. */
+
+#ifdef CONFIG_ISA
+ if(dev->dma > 0)
+ {
+ unsigned long flags=claim_dma_lock();
+ disable_dma(dev->dma);
+ set_dma_mode(dev->dma, DMA_MODE_CASCADE);
+ enable_dma(dev->dma);
+ release_dma_lock(flags);
+ }
+#endif
+
+ err = tms380tr_chipset_init(dev);
+ if(err)
+ {
+ printk(KERN_INFO "%s: Chipset initialization error\n",
+ dev->name);
+ return (-1);
+ }
+
+ tp->timer.expires = jiffies + 30*HZ;
+ tp->timer.function = tms380tr_timer_end_wait;
+ tp->timer.data = (unsigned long)dev;
+ add_timer(&tp->timer);
+
+ printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
+ dev->name, tms380tr_read_ptr(dev));
+
+ tms380tr_enable_interrupts(dev);
+ tms380tr_open_adapter(dev);
+
+ netif_start_queue(dev);
+
+ /* Wait for interrupt from hardware. If interrupt does not come,
+ * there will be a timeout from the timer.
+ */
+ tp->Sleeping = 1;
+ interruptible_sleep_on(&tp->wait_for_tok_int);
+ del_timer(&tp->timer);
+
+ /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
+ if(tp->AdapterVirtOpenFlag == 0)
+ {
+ tms380tr_disable_interrupts(dev);
+ return (-1);
+ }
+
+ tp->StartTime = jiffies;
+
+ /* Start function control timer */
+ tp->timer.expires = jiffies + 2*HZ;
+ tp->timer.function = tms380tr_timer_chk;
+ tp->timer.data = (unsigned long)dev;
+ add_timer(&tp->timer);
+
+ return (0);
+}
+
+/*
+ * Timeout function while waiting for event
+ */
+static void tms380tr_timer_end_wait(unsigned long data)
+{
+ struct net_device *dev = (struct net_device*)data;
+ struct net_local *tp = netdev_priv(dev);
+
+ if(tp->Sleeping)
+ {
+ tp->Sleeping = 0;
+ wake_up_interruptible(&tp->wait_for_tok_int);
+ }
+
+ return;
+}
+
+/*
+ * Initialize the chipset
+ */
+static int tms380tr_chipset_init(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ int err;
+
+ tms380tr_init_ipb(tp);
+ tms380tr_init_opb(dev);
+ tms380tr_init_net_local(dev);
+
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
+ err = tms380tr_reset_adapter(dev);
+ if(err < 0)
+ return (-1);
+
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
+ err = tms380tr_bringup_diags(dev);
+ if(err < 0)
+ return (-1);
+
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
+ err = tms380tr_init_adapter(dev);
+ if(err < 0)
+ return (-1);
+
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Done!\n", dev->name);
+ return (0);
+}
+
+/*
+ * Initializes the net_local structure.
+ */
+static void tms380tr_init_net_local(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ int i;
+ dma_addr_t dmabuf;
+
+ tp->scb.CMD = 0;
+ tp->scb.Parm[0] = 0;
+ tp->scb.Parm[1] = 0;
+
+ tp->ssb.STS = 0;
+ tp->ssb.Parm[0] = 0;
+ tp->ssb.Parm[1] = 0;
+ tp->ssb.Parm[2] = 0;
+
+ tp->CMDqueue = 0;
+
+ tp->AdapterOpenFlag = 0;
+ tp->AdapterVirtOpenFlag = 0;
+ tp->ScbInUse = 0;
+ tp->OpenCommandIssued = 0;
+ tp->ReOpenInProgress = 0;
+ tp->HaltInProgress = 0;
+ tp->TransmitHaltScheduled = 0;
+ tp->LobeWireFaultLogged = 0;
+ tp->LastOpenStatus = 0;
+ tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
+
+ /* Create circular chain of transmit lists */
+ for (i = 0; i < TPL_NUM; i++)
+ {
+ tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
+ tp->Tpl[i].Status = 0;
+ tp->Tpl[i].FrameSize = 0;
+ tp->Tpl[i].FragList[0].DataCount = 0;
+ tp->Tpl[i].FragList[0].DataAddr = 0;
+ tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
+ tp->Tpl[i].MData = NULL;
+ tp->Tpl[i].TPLIndex = i;
+ tp->Tpl[i].DMABuff = 0;
+ tp->Tpl[i].BusyFlag = 0;
+ }
+
+ tp->TplFree = tp->TplBusy = &tp->Tpl[0];
+
+ /* Create circular chain of receive lists */
+ for (i = 0; i < RPL_NUM; i++)
+ {
+ tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
+ tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
+ tp->Rpl[i].FrameSize = 0;
+ tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
+
+ /* Alloc skb and point adapter to data area */
+ tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
+ tp->Rpl[i].DMABuff = 0;
+
+ /* skb == NULL ? then use local buffer */
+ if(tp->Rpl[i].Skb == NULL)
+ {
+ tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
+ tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
+ tp->Rpl[i].MData = tp->LocalRxBuffers[i];
+ }
+ else /* SKB != NULL */
+ {
+ tp->Rpl[i].Skb->dev = dev;
+ skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
+
+ /* data unreachable for DMA ? then use local buffer */
+ dmabuf = pci_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE);
+ if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
+ {
+ tp->Rpl[i].SkbStat = SKB_DATA_COPY;
+ tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
+ tp->Rpl[i].MData = tp->LocalRxBuffers[i];
+ }
+ else /* DMA directly in skb->data */
+ {
+ tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
+ tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
+ tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
+ tp->Rpl[i].DMABuff = dmabuf;
+ }
+ }
+
+ tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
+ tp->Rpl[i].RPLIndex = i;
+ }
+
+ tp->RplHead = &tp->Rpl[0];
+ tp->RplTail = &tp->Rpl[RPL_NUM-1];
+ tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
+
+ return;
+}
+
+/*
+ * Initializes the initialisation parameter block.
+ */
+static void tms380tr_init_ipb(struct net_local *tp)
+{
+ tp->ipb.Init_Options = BURST_MODE;
+ tp->ipb.CMD_Status_IV = 0;
+ tp->ipb.TX_IV = 0;
+ tp->ipb.RX_IV = 0;
+ tp->ipb.Ring_Status_IV = 0;
+ tp->ipb.SCB_Clear_IV = 0;
+ tp->ipb.Adapter_CHK_IV = 0;
+ tp->ipb.RX_Burst_Size = BURST_SIZE;
+ tp->ipb.TX_Burst_Size = BURST_SIZE;
+ tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
+ tp->ipb.SCB_Addr = 0;
+ tp->ipb.SSB_Addr = 0;
+
+ return;
+}
+
+/*
+ * Initializes the open parameter block.
+ */
+static void tms380tr_init_opb(struct net_device *dev)
+{
+ struct net_local *tp;
+ unsigned long Addr;
+ unsigned short RplSize = RPL_SIZE;
+ unsigned short TplSize = TPL_SIZE;
+ unsigned short BufferSize = BUFFER_SIZE;
+ int i;
+
+ tp = netdev_priv(dev);
+
+ tp->ocpl.OPENOptions = 0;
+ tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
+ tp->ocpl.FullDuplex = 0;
+ tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
+
+ /*
+ * Set node address
+ *
+ * We go ahead and put it in the OPB even though on
+ * most of the generic adapters this isn't required.
+ * Its simpler this way. -- ASF
+ */
+ for (i=0;i<6;i++)
+ tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
+
+ tp->ocpl.GroupAddr = 0;
+ tp->ocpl.FunctAddr = 0;
+ tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
+ tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
+ tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
+ tp->ocpl.Reserved = 0;
+ tp->ocpl.TXBufMin = TX_BUF_MIN;
+ tp->ocpl.TXBufMax = TX_BUF_MAX;
+
+ Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
+
+ tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
+ tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
+
+ return;
+}
+
+/*
+ * Send OPEN command to adapter
+ */
+static void tms380tr_open_adapter(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+
+ if(tp->OpenCommandIssued)
+ return;
+
+ tp->OpenCommandIssued = 1;
+ tms380tr_exec_cmd(dev, OC_OPEN);
+
+ return;
+}
+
+/*
+ * Clear the adapter's interrupt flag. Clear system interrupt enable
+ * (SINTEN): disable adapter to system interrupts.
+ */
+static void tms380tr_disable_interrupts(struct net_device *dev)
+{
+ SIFWRITEB(0, SIFACL);
+
+ return;
+}
+
+/*
+ * Set the adapter's interrupt flag. Set system interrupt enable
+ * (SINTEN): enable adapter to system interrupts.
+ */
+static void tms380tr_enable_interrupts(struct net_device *dev)
+{
+ SIFWRITEB(ACL_SINTEN, SIFACL);
+
+ return;
+}
+
+/*
+ * Put command in command queue, try to execute it.
+ */
+static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
+{
+ struct net_local *tp = netdev_priv(dev);
+
+ tp->CMDqueue |= Command;
+ tms380tr_chk_outstanding_cmds(dev);
+
+ return;
+}
+
+static void tms380tr_timeout(struct net_device *dev)
+{
+ /*
+ * If we get here, some higher level has decided we are broken.
+ * There should really be a "kick me" function call instead.
+ *
+ * Resetting the token ring adapter takes a long time so just
+ * fake transmission time and go on trying. Our own timeout
+ * routine is in tms380tr_timer_chk()
+ */
+ dev->trans_start = jiffies;
+ netif_wake_queue(dev);
+}
+
+/*
+ * Gets skb from system, queues it and checks if it can be sent
+ */
+static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ int err;
+
+ err = tms380tr_hardware_send_packet(skb, dev);
+ if(tp->TplFree->NextTPLPtr->BusyFlag)
+ netif_stop_queue(dev);
+ return (err);
+}
+
+/*
+ * Move frames into adapter tx queue
+ */
+static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ TPL *tpl;
+ short length;
+ unsigned char *buf;
+ unsigned long flags;
+ int i;
+ dma_addr_t dmabuf, newbuf;
+ struct net_local *tp = netdev_priv(dev);
+
+ /* Try to get a free TPL from the chain.
+ *
+ * NOTE: We *must* always leave one unused TPL in the chain,
+ * because otherwise the adapter might send frames twice.
+ */
+ spin_lock_irqsave(&tp->lock, flags);
+ if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
+ if (tms380tr_debug > 0)
+ printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
+ spin_unlock_irqrestore(&tp->lock, flags);
+ return 1;
+ }
+
+ dmabuf = 0;
+
+ /* Is buffer reachable for Busmaster-DMA? */
+
+ length = skb->len;
+ dmabuf = pci_map_single(tp->pdev, skb->data, length, PCI_DMA_TODEVICE);
+ if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
+ /* Copy frame to local buffer */
+ pci_unmap_single(tp->pdev, dmabuf, length, PCI_DMA_TODEVICE);
+ dmabuf = 0;
+ i = tp->TplFree->TPLIndex;
+ buf = tp->LocalTxBuffers[i];
+ memcpy(buf, skb->data, length);
+ newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
+ }
+ else {
+ /* Send direct from skb->data */
+ newbuf = dmabuf;
+ buf = skb->data;
+ }
+ /* Source address in packet? */
+ tms380tr_chk_src_addr(buf, dev->dev_addr);
+ tp->LastSendTime = jiffies;
+ tpl = tp->TplFree; /* Get the "free" TPL */
+ tpl->BusyFlag = 1; /* Mark TPL as busy */
+ tp->TplFree = tpl->NextTPLPtr;
+
+ /* Save the skb for delayed return of skb to system */
+ tpl->Skb = skb;
+ tpl->DMABuff = dmabuf;
+ tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
+ tpl->FragList[0].DataAddr = htonl(newbuf);
+
+ /* Write the data length in the transmit list. */
+ tpl->FrameSize = cpu_to_be16((unsigned short)length);
+ tpl->MData = buf;
+
+ /* Transmit the frame and set the status values. */
+ tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
+ | TX_END_FRAME | TX_PASS_SRC_ADDR
+ | TX_FRAME_IRQ);
+
+ /* Let adapter send the frame. */
+ tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ return 0;
+}
+
+/*
+ * Write the given value to the 'Status' field of the specified TPL.
+ * NOTE: This function should be used whenever the status of any TPL must be
+ * modified by the driver, because the compiler may otherwise change the
+ * order of instructions such that writing the TPL status may be executed at
+ * an undesireable time. When this function is used, the status is always
+ * written when the function is called.
+ */
+static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
+{
+ tpl->Status = Status;
+}
+
+static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
+{
+ unsigned char SRBit;
+
+ if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
+ return;
+ if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
+ return;
+
+ SRBit = frame[8] & 0x80;
+ memcpy(&frame[8], hw_addr, 6);
+ frame[8] |= SRBit;
+
+ return;
+}
+
+/*
+ * The timer routine: Check if adapter still open and working, reopen if not.
+ */
+static void tms380tr_timer_chk(unsigned long data)
+{
+ struct net_device *dev = (struct net_device*)data;
+ struct net_local *tp = netdev_priv(dev);
+
+ if(tp->HaltInProgress)
+ return;
+
+ tms380tr_chk_outstanding_cmds(dev);
+ if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
+ && (tp->TplFree != tp->TplBusy))
+ {
+ /* Anything to send, but stalled too long */
+ tp->LastSendTime = jiffies;
+ tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
+ }
+
+ tp->timer.expires = jiffies + 2*HZ;
+ add_timer(&tp->timer);
+
+ if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
+ return;
+ tp->ReOpenInProgress = 1;
+ tms380tr_open_adapter(dev);
+
+ return;
+}
+
+/*
+ * The typical workload of the driver: Handle the network interface interrupts.
+ */
+irqreturn_t tms380tr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = dev_id;
+ struct net_local *tp;
+ unsigned short irq_type;
+ int handled = 0;
+
+ if(dev == NULL) {
+ printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
+ return IRQ_NONE;
+ }
+
+ tp = netdev_priv(dev);
+
+ irq_type = SIFREADW(SIFSTS);
+
+ while(irq_type & STS_SYSTEM_IRQ) {
+ handled = 1;
+ irq_type &= STS_IRQ_MASK;
+
+ if(!tms380tr_chk_ssb(tp, irq_type)) {
+ printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
+ break;
+ }
+
+ switch(irq_type) {
+ case STS_IRQ_RECEIVE_STATUS:
+ tms380tr_reset_interrupt(dev);
+ tms380tr_rcv_status_irq(dev);
+ break;
+
+ case STS_IRQ_TRANSMIT_STATUS:
+ /* Check if TRANSMIT.HALT command is complete */
+ if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
+ tp->TransmitCommandActive = 0;
+ tp->TransmitHaltScheduled = 0;
+
+ /* Issue a new transmit command. */
+ tms380tr_exec_cmd(dev, OC_TRANSMIT);
+ }
+
+ tms380tr_reset_interrupt(dev);
+ tms380tr_tx_status_irq(dev);
+ break;
+
+ case STS_IRQ_COMMAND_STATUS:
+ /* The SSB contains status of last command
+ * other than receive/transmit.
+ */
+ tms380tr_cmd_status_irq(dev);
+ break;
+
+ case STS_IRQ_SCB_CLEAR:
+ /* The SCB is free for another command. */
+ tp->ScbInUse = 0;
+ tms380tr_chk_outstanding_cmds(dev);
+ break;
+
+ case STS_IRQ_RING_STATUS:
+ tms380tr_ring_status_irq(dev);
+ break;
+
+ case STS_IRQ_ADAPTER_CHECK:
+ tms380tr_chk_irq(dev);
+ break;
+
+ case STS_IRQ_LLC_STATUS:
+ printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
+ break;
+
+ case STS_IRQ_TIMER:
+ printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
+ break;
+
+ case STS_IRQ_RECEIVE_PENDING:
+ printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
+ break;
+
+ default:
+ printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
+ break;
+ }
+
+ /* Reset system interrupt if not already done. */
+ if(irq_type != STS_IRQ_TRANSMIT_STATUS
+ && irq_type != STS_IRQ_RECEIVE_STATUS) {
+ tms380tr_reset_interrupt(dev);
+ }
+
+ irq_type = SIFREADW(SIFSTS);
+ }
+
+ return IRQ_RETVAL(handled);
+}
+
+/*
+ * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
+ */
+static void tms380tr_reset_interrupt(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ SSB *ssb = &tp->ssb;
+
+ /*
+ * [Workaround for "Data Late"]
+ * Set all fields of the SSB to well-defined values so we can
+ * check if the adapter has written the SSB.
+ */
+
+ ssb->STS = (unsigned short) -1;
+ ssb->Parm[0] = (unsigned short) -1;
+ ssb->Parm[1] = (unsigned short) -1;
+ ssb->Parm[2] = (unsigned short) -1;
+
+ /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
+ * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
+ */
+ tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
+
+ return;
+}
+
+/*
+ * Check if the SSB has actually been written by the adapter.
+ */
+static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
+{
+ SSB *ssb = &tp->ssb; /* The address of the SSB. */
+
+ /* C 0 1 2 INTERRUPT CODE
+ * - - - - --------------
+ * 1 1 1 1 TRANSMIT STATUS
+ * 1 1 1 1 RECEIVE STATUS
+ * 1 ? ? 0 COMMAND STATUS
+ * 0 0 0 0 SCB CLEAR
+ * 1 1 0 0 RING STATUS
+ * 0 0 0 0 ADAPTER CHECK
+ *
+ * 0 = SSB field not affected by interrupt
+ * 1 = SSB field is affected by interrupt
+ *
+ * C = SSB ADDRESS +0: COMMAND
+ * 0 = SSB ADDRESS +2: STATUS 0
+ * 1 = SSB ADDRESS +4: STATUS 1
+ * 2 = SSB ADDRESS +6: STATUS 2
+ */
+
+ /* Check if this interrupt does use the SSB. */
+
+ if(IrqType != STS_IRQ_TRANSMIT_STATUS
+ && IrqType != STS_IRQ_RECEIVE_STATUS
+ && IrqType != STS_IRQ_COMMAND_STATUS
+ && IrqType != STS_IRQ_RING_STATUS)
+ {
+ return (1); /* SSB not involved. */
+ }
+
+ /* Note: All fields of the SSB have been set to all ones (-1) after it
+ * has last been used by the software (see DriverIsr()).
+ *
+ * Check if the affected SSB fields are still unchanged.
+ */
+
+ if(ssb->STS == (unsigned short) -1)
+ return (0); /* Command field not yet available. */
+ if(IrqType == STS_IRQ_COMMAND_STATUS)
+ return (1); /* Status fields not always affected. */
+ if(ssb->Parm[0] == (unsigned short) -1)
+ return (0); /* Status 1 field not yet available. */
+ if(IrqType == STS_IRQ_RING_STATUS)
+ return (1); /* Status 2 & 3 fields not affected. */
+
+ /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
+ if(ssb->Parm[1] == (unsigned short) -1)
+ return (0); /* Status 2 field not yet available. */
+ if(ssb->Parm[2] == (unsigned short) -1)
+ return (0); /* Status 3 field not yet available. */
+
+ return (1); /* All SSB fields have been written by the adapter. */
+}
+
+/*
+ * Evaluates the command results status in the SSB status field.
+ */
+static void tms380tr_cmd_status_irq(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned short ssb_cmd, ssb_parm_0;
+ unsigned short ssb_parm_1;
+ char *open_err = "Open error -";
+ char *code_err = "Open code -";
+
+ /* Copy the ssb values to local variables */
+ ssb_cmd = tp->ssb.STS;
+ ssb_parm_0 = tp->ssb.Parm[0];
+ ssb_parm_1 = tp->ssb.Parm[1];
+
+ if(ssb_cmd == OPEN)
+ {
+ tp->Sleeping = 0;
+ if(!tp->ReOpenInProgress)
+ wake_up_interruptible(&tp->wait_for_tok_int);
+
+ tp->OpenCommandIssued = 0;
+ tp->ScbInUse = 0;
+
+ if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
+ {
+ /* Success, the adapter is open. */
+ tp->LobeWireFaultLogged = 0;
+ tp->AdapterOpenFlag = 1;
+ tp->AdapterVirtOpenFlag = 1;
+ tp->TransmitCommandActive = 0;
+ tms380tr_exec_cmd(dev, OC_TRANSMIT);
+ tms380tr_exec_cmd(dev, OC_RECEIVE);
+
+ if(tp->ReOpenInProgress)
+ tp->ReOpenInProgress = 0;
+
+ return;
+ }
+ else /* The adapter did not open. */
+ {
+ if(ssb_parm_0 & NODE_ADDR_ERROR)
+ printk(KERN_INFO "%s: Node address error\n",
+ dev->name);
+ if(ssb_parm_0 & LIST_SIZE_ERROR)
+ printk(KERN_INFO "%s: List size error\n",
+ dev->name);
+ if(ssb_parm_0 & BUF_SIZE_ERROR)
+ printk(KERN_INFO "%s: Buffer size error\n",
+ dev->name);
+ if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
+ printk(KERN_INFO "%s: Tx buffer count error\n",
+ dev->name);
+ if(ssb_parm_0 & INVALID_OPEN_OPTION)
+ printk(KERN_INFO "%s: Invalid open option\n",
+ dev->name);
+ if(ssb_parm_0 & OPEN_ERROR)
+ {
+ /* Show the open phase. */
+ switch(ssb_parm_0 & OPEN_PHASES_MASK)
+ {
+ case LOBE_MEDIA_TEST:
+ if(!tp->LobeWireFaultLogged)
+ {
+ tp->LobeWireFaultLogged = 1;
+ printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
+ }
+ tp->ReOpenInProgress = 1;
+ tp->AdapterOpenFlag = 0;
+ tp->AdapterVirtOpenFlag = 1;
+ tms380tr_open_adapter(dev);
+ return;
+
+ case PHYSICAL_INSERTION:
+ printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
+ break;
+
+ case ADDRESS_VERIFICATION:
+ printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
+ break;
+
+ case PARTICIPATION_IN_RING_POLL:
+ printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
+ break;
+
+ case REQUEST_INITIALISATION:
+ printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
+ break;
+
+ case FULLDUPLEX_CHECK:
+ printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
+ break;
+
+ default:
+ printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
+ break;
+ }
+
+ /* Show the open errors. */
+ switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
+ {
+ case OPEN_FUNCTION_FAILURE:
+ printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_FUNCTION_FAILURE;
+ break;
+
+ case OPEN_SIGNAL_LOSS:
+ printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_SIGNAL_LOSS;
+ break;
+
+ case OPEN_TIMEOUT:
+ printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_TIMEOUT;
+ break;
+
+ case OPEN_RING_FAILURE:
+ printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_RING_FAILURE;
+ break;
+
+ case OPEN_RING_BEACONING:
+ printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_RING_BEACONING;
+ break;
+
+ case OPEN_DUPLICATE_NODEADDR:
+ printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_DUPLICATE_NODEADDR;
+ break;
+
+ case OPEN_REQUEST_INIT:
+ printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_REQUEST_INIT;
+ break;
+
+ case OPEN_REMOVE_RECEIVED:
+ printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_REMOVE_RECEIVED;
+ break;
+
+ case OPEN_FULLDUPLEX_SET:
+ printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_FULLDUPLEX_SET;
+ break;
+
+ default:
+ printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
+ tp->LastOpenStatus =
+ OPEN_FUNCTION_FAILURE;
+ break;
+ }
+ }
+
+ tp->AdapterOpenFlag = 0;
+ tp->AdapterVirtOpenFlag = 0;
+
+ return;
+ }
+ }
+ else
+ {
+ if(ssb_cmd != READ_ERROR_LOG)
+ return;
+
+ /* Add values from the error log table to the MAC
+ * statistics counters and update the errorlogtable
+ * memory.
+ */
+ tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
+ tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
+ tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
+ tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
+ tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
+ tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
+ tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
+ tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
+ tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
+ tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
+ tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
+ tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
+ tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
+ }
+
+ return;
+}
+
+/*
+ * The inverse routine to tms380tr_open().
+ */
+int tms380tr_close(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ netif_stop_queue(dev);
+
+ del_timer(&tp->timer);
+
+ /* Flush the Tx and disable Rx here. */
+
+ tp->HaltInProgress = 1;
+ tms380tr_exec_cmd(dev, OC_CLOSE);
+ tp->timer.expires = jiffies + 1*HZ;
+ tp->timer.function = tms380tr_timer_end_wait;
+ tp->timer.data = (unsigned long)dev;
+ add_timer(&tp->timer);
+
+ tms380tr_enable_interrupts(dev);
+
+ tp->Sleeping = 1;
+ interruptible_sleep_on(&tp->wait_for_tok_int);
+ tp->TransmitCommandActive = 0;
+
+ del_timer(&tp->timer);
+ tms380tr_disable_interrupts(dev);
+
+#ifdef CONFIG_ISA
+ if(dev->dma > 0)
+ {
+ unsigned long flags=claim_dma_lock();
+ disable_dma(dev->dma);
+ release_dma_lock(flags);
+ }
+#endif
+
+ SIFWRITEW(0xFF00, SIFCMD);
+#if 0
+ if(dev->dma > 0) /* what the? */
+ SIFWRITEB(0xff, POSREG);
+#endif
+ tms380tr_cancel_tx_queue(tp);
+
+ return (0);
+}
+
+/*
+ * Get the current statistics. This may be called with the card open
+ * or closed.
+ */
+static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+
+ return ((struct net_device_stats *)&tp->MacStat);
+}
+
+/*
+ * Set or clear the multicast filter for this adapter.
+ */
+static void tms380tr_set_multicast_list(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned int OpenOptions;
+
+ OpenOptions = tp->ocpl.OPENOptions &
+ ~(PASS_ADAPTER_MAC_FRAMES
+ | PASS_ATTENTION_FRAMES
+ | PASS_BEACON_MAC_FRAMES
+ | COPY_ALL_MAC_FRAMES
+ | COPY_ALL_NON_MAC_FRAMES);
+
+ tp->ocpl.FunctAddr = 0;
+
+ if(dev->flags & IFF_PROMISC)
+ /* Enable promiscuous mode */
+ OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
+ COPY_ALL_MAC_FRAMES;
+ else
+ {
+ if(dev->flags & IFF_ALLMULTI)
+ {
+ /* Disable promiscuous mode, use normal mode. */
+ tp->ocpl.FunctAddr = 0xFFFFFFFF;
+ }
+ else
+ {
+ int i;
+ struct dev_mc_list *mclist = dev->mc_list;
+ for (i=0; i< dev->mc_count; i++)
+ {
+ ((char *)(&tp->ocpl.FunctAddr))[0] |=
+ mclist->dmi_addr[2];
+ ((char *)(&tp->ocpl.FunctAddr))[1] |=
+ mclist->dmi_addr[3];
+ ((char *)(&tp->ocpl.FunctAddr))[2] |=
+ mclist->dmi_addr[4];
+ ((char *)(&tp->ocpl.FunctAddr))[3] |=
+ mclist->dmi_addr[5];
+ mclist = mclist->next;
+ }
+ }
+ tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
+ }
+
+ tp->ocpl.OPENOptions = OpenOptions;
+ tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
+ return;
+}
+
+/*
+ * Wait for some time (microseconds)
+ */
+void tms380tr_wait(unsigned long time)
+{
+#if 0
+ long tmp;
+
+ tmp = jiffies + time/(1000000/HZ);
+ do {
+ current->state = TASK_INTERRUPTIBLE;
+ tmp = schedule_timeout(tmp);
+ } while(time_after(tmp, jiffies));
+#else
+ udelay(time);
+#endif
+ return;
+}
+
+/*
+ * Write a command value to the SIFCMD register
+ */
+static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
+{
+ unsigned short cmd;
+ unsigned short SifStsValue;
+ unsigned long loop_counter;
+
+ WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
+ cmd = (unsigned short)WriteValue;
+ loop_counter = 0,5 * 800000;
+ do {
+ SifStsValue = SIFREADW(SIFSTS);
+ } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
+ SIFWRITEW(cmd, SIFCMD);
+
+ return;
+}
+
+/*
+ * Processes adapter hardware reset, halts adapter and downloads firmware,
+ * clears the halt bit.
+ */
+static int tms380tr_reset_adapter(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned short *fw_ptr;
+ unsigned short count, c, count2;
+ const struct firmware *fw_entry = NULL;
+
+ strncpy(tms_device.bus_id,dev->name, BUS_ID_SIZE);
+
+ if (request_firmware(&fw_entry, "tms380tr.bin", &tms_device) != 0) {
+ printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
+ dev->name, "tms380tr.bin");
+ return (-1);
+ }
+
+ fw_ptr = (unsigned short *)fw_entry->data;
+ count2 = fw_entry->size / 2;
+
+ /* Hardware adapter reset */
+ SIFWRITEW(ACL_ARESET, SIFACL);
+ tms380tr_wait(40);
+
+ c = SIFREADW(SIFACL);
+ tms380tr_wait(20);
+
+ if(dev->dma == 0) /* For PCI adapters */
+ {
+ c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
+ if(tp->setnselout)
+ c |= (*tp->setnselout)(dev);
+ }
+
+ /* In case a command is pending - forget it */
+ tp->ScbInUse = 0;
+
+ c &= ~ACL_ARESET; /* Clear adapter reset bit */
+ c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
+ c |= ACL_BOOT;
+ c |= ACL_SINTEN;
+ c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
+ SIFWRITEW(c, SIFACL);
+ tms380tr_wait(40);
+
+ count = 0;
+ /* Download firmware via DIO interface: */
+ do {
+ if (count2 < 3) continue;
+
+ /* Download first address part */
+ SIFWRITEW(*fw_ptr, SIFADX);
+ fw_ptr++;
+ count2--;
+ /* Download second address part */
+ SIFWRITEW(*fw_ptr, SIFADD);
+ fw_ptr++;
+ count2--;
+
+ if((count = *fw_ptr) != 0) /* Load loop counter */
+ {
+ fw_ptr++; /* Download block data */
+ count2--;
+ if (count > count2) continue;
+
+ for(; count > 0; count--)
+ {
+ SIFWRITEW(*fw_ptr, SIFINC);
+ fw_ptr++;
+ count2--;
+ }
+ }
+ else /* Stop, if last block downloaded */
+ {
+ c = SIFREADW(SIFACL);
+ c &= (~ACL_CPHALT | ACL_SINTEN);
+
+ /* Clear CPHALT and start BUD */
+ SIFWRITEW(c, SIFACL);
+ if (fw_entry)
+ release_firmware(fw_entry);
+ return (1);
+ }
+ } while(count == 0);
+
+ if (fw_entry)
+ release_firmware(fw_entry);
+ printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
+ return (-1);
+}
+
+/*
+ * Starts bring up diagnostics of token ring adapter and evaluates
+ * diagnostic results.
+ */
+static int tms380tr_bringup_diags(struct net_device *dev)
+{
+ int loop_cnt, retry_cnt;
+ unsigned short Status;
+
+ tms380tr_wait(HALF_SECOND);
+ tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
+ tms380tr_wait(HALF_SECOND);
+
+ retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
+
+ do {
+ retry_cnt--;
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "BUD-Status: ");
+ loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
+ do { /* Inspect BUD results */
+ loop_cnt--;
+ tms380tr_wait(HALF_SECOND);
+ Status = SIFREADW(SIFSTS);
+ Status &= STS_MASK;
+
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG " %04X \n", Status);
+ /* BUD successfully completed */
+ if(Status == STS_INITIALIZE)
+ return (1);
+ /* Unrecoverable hardware error, BUD not completed? */
+ } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
+ != (STS_ERROR | STS_TEST)));
+
+ /* Error preventing completion of BUD */
+ if(retry_cnt > 0)
+ {
+ printk(KERN_INFO "%s: Adapter Software Reset.\n",
+ dev->name);
+ tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
+ tms380tr_wait(HALF_SECOND);
+ }
+ } while(retry_cnt > 0);
+
+ Status = SIFREADW(SIFSTS);
+
+ printk(KERN_INFO "%s: Hardware error\n", dev->name);
+ /* Hardware error occurred! */
+ Status &= 0x001f;
+ if (Status & 0x0010)
+ printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
+ else if ((Status & 0x000f) > 6)
+ printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
+ else
+ printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
+
+ return (-1);
+}
+
+/*
+ * Copy initialisation data to adapter memory, beginning at address
+ * 1:0A00; Starting DMA test and evaluating result bits.
+ */
+static int tms380tr_init_adapter(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+
+ const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
+ const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
+ 0xC5, 0xD9, 0xC3, 0xD4};
+ void *ptr = (void *)&tp->ipb;
+ unsigned short *ipb_ptr = (unsigned short *)ptr;
+ unsigned char *cb_ptr = (unsigned char *) &tp->scb;
+ unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
+ unsigned short Status;
+ int i, loop_cnt, retry_cnt;
+
+ /* Normalize: byte order low/high, word order high/low! (only IPB!) */
+ tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
+ tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
+
+ if(tms380tr_debug > 3)
+ {
+ printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
+ printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
+ printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
+ printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
+ }
+ /* Maximum: three initialization retries */
+ retry_cnt = INIT_MAX_RETRIES;
+
+ do {
+ retry_cnt--;
+
+ /* Transfer initialization block */
+ SIFWRITEW(0x0001, SIFADX);
+
+ /* To address 0001:0A00 of adapter RAM */
+ SIFWRITEW(0x0A00, SIFADD);
+
+ /* Write 11 words to adapter RAM */
+ for(i = 0; i < 11; i++)
+ SIFWRITEW(ipb_ptr[i], SIFINC);
+
+ /* Execute SCB adapter command */
+ tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
+
+ loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
+
+ /* While remaining retries, no error and not completed */
+ do {
+ Status = 0;
+ loop_cnt--;
+ tms380tr_wait(HALF_SECOND);
+
+ /* Mask interesting status bits */
+ Status = SIFREADW(SIFSTS);
+ Status &= STS_MASK;
+ } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
+ && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
+
+ if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
+ {
+ /* Initialization completed without error */
+ i = 0;
+ do { /* Test if contents of SCB is valid */
+ if(SCB_Test[i] != *(cb_ptr + i))
+ {
+ printk(KERN_INFO "%s: DMA failed\n", dev->name);
+ /* DMA data error: wrong data in SCB */
+ return (-1);
+ }
+ i++;
+ } while(i < 6);
+
+ i = 0;
+ do { /* Test if contents of SSB is valid */
+ if(SSB_Test[i] != *(sb_ptr + i))
+ /* DMA data error: wrong data in SSB */
+ return (-1);
+ i++;
+ } while (i < 8);
+
+ return (1); /* Adapter successfully initialized */
+ }
+ else
+ {
+ if((Status & STS_ERROR) != 0)
+ {
+ /* Initialization error occurred */
+ Status = SIFREADW(SIFSTS);
+ Status &= STS_ERROR_MASK;
+ /* ShowInitialisationErrorCode(Status); */
+ printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
+ return (-1); /* Unrecoverable error */
+ }
+ else
+ {
+ if(retry_cnt > 0)
+ {
+ /* Reset adapter and try init again */
+ tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
+ tms380tr_wait(HALF_SECOND);
+ }
+ }
+ }
+ } while(retry_cnt > 0);
+
+ printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
+ return (-1);
+}
+
+/*
+ * Check for outstanding commands in command queue and tries to execute
+ * command immediately. Corresponding command flag in command queue is cleared.
+ */
+static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned long Addr = 0;
+
+ if(tp->CMDqueue == 0)
+ return; /* No command execution */
+
+ /* If SCB in use: no command */
+ if(tp->ScbInUse == 1)
+ return;
+
+ /* Check if adapter is opened, avoiding COMMAND_REJECT
+ * interrupt by the adapter!
+ */
+ if(tp->AdapterOpenFlag == 0)
+ {
+ if(tp->CMDqueue & OC_OPEN)
+ {
+ /* Execute OPEN command */
+ tp->CMDqueue ^= OC_OPEN;
+
+ Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
+ tp->scb.Parm[0] = LOWORD(Addr);
+ tp->scb.Parm[1] = HIWORD(Addr);
+ tp->scb.CMD = OPEN;
+ }
+ else
+ /* No OPEN command queued, but adapter closed. Note:
+ * We'll try to re-open the adapter in DriverPoll()
+ */
+ return; /* No adapter command issued */
+ }
+ else
+ {
+ /* Adapter is open; evaluate command queue: try to execute
+ * outstanding commands (depending on priority!) CLOSE
+ * command queued
+ */
+ if(tp->CMDqueue & OC_CLOSE)
+ {
+ tp->CMDqueue ^= OC_CLOSE;
+ tp->AdapterOpenFlag = 0;
+ tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
+ tp->scb.Parm[1] = 0; /* but should be set to zero! */
+ tp->scb.CMD = CLOSE;
+ if(!tp->HaltInProgress)
+ tp->CMDqueue |= OC_OPEN; /* re-open adapter */
+ else
+ tp->CMDqueue = 0; /* no more commands */
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_RECEIVE)
+ {
+ tp->CMDqueue ^= OC_RECEIVE;
+ Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
+ tp->scb.Parm[0] = LOWORD(Addr);
+ tp->scb.Parm[1] = HIWORD(Addr);
+ tp->scb.CMD = RECEIVE;
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_TRANSMIT_HALT)
+ {
+ /* NOTE: TRANSMIT.HALT must be checked
+ * before TRANSMIT.
+ */
+ tp->CMDqueue ^= OC_TRANSMIT_HALT;
+ tp->scb.CMD = TRANSMIT_HALT;
+
+ /* Parm[0] and Parm[1] are ignored
+ * but should be set to zero!
+ */
+ tp->scb.Parm[0] = 0;
+ tp->scb.Parm[1] = 0;
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_TRANSMIT)
+ {
+ /* NOTE: TRANSMIT must be
+ * checked after TRANSMIT.HALT
+ */
+ if(tp->TransmitCommandActive)
+ {
+ if(!tp->TransmitHaltScheduled)
+ {
+ tp->TransmitHaltScheduled = 1;
+ tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
+ }
+ tp->TransmitCommandActive = 0;
+ return;
+ }
+
+ tp->CMDqueue ^= OC_TRANSMIT;
+ tms380tr_cancel_tx_queue(tp);
+ Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
+ tp->scb.Parm[0] = LOWORD(Addr);
+ tp->scb.Parm[1] = HIWORD(Addr);
+ tp->scb.CMD = TRANSMIT;
+ tp->TransmitCommandActive = 1;
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
+ {
+ tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
+ tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
+ tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
+ tp->scb.Parm[1] = 0; /* is ignored but should be zero */
+ tp->scb.CMD = MODIFY_OPEN_PARMS;
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
+ {
+ tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
+ tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
+ tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
+ tp->scb.CMD = SET_FUNCT_ADDR;
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_SET_GROUP_ADDR)
+ {
+ tp->CMDqueue ^= OC_SET_GROUP_ADDR;
+ tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
+ tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
+ tp->scb.CMD = SET_GROUP_ADDR;
+ }
+ else
+ {
+ if(tp->CMDqueue & OC_READ_ERROR_LOG)
+ {
+ tp->CMDqueue ^= OC_READ_ERROR_LOG;
+ Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
+ tp->scb.Parm[0] = LOWORD(Addr);
+ tp->scb.Parm[1] = HIWORD(Addr);
+ tp->scb.CMD = READ_ERROR_LOG;
+ }
+ else
+ {
+ printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
+ tp->CMDqueue = 0;
+ return;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
+
+ /* Execute SCB and generate IRQ when done. */
+ tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
+
+ return;
+}
+
+/*
+ * IRQ conditions: signal loss on the ring, transmit or receive of beacon
+ * frames (disabled if bit 1 of OPEN option is set); report error MAC
+ * frame transmit (disabled if bit 2 of OPEN option is set); open or short
+ * circuit fault on the lobe is detected; remove MAC frame received;
+ * error counter overflow (255); opened adapter is the only station in ring.
+ * After some of the IRQs the adapter is closed!
+ */
+static void tms380tr_ring_status_irq(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+
+ tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
+
+ /* First: fill up statistics */
+ if(tp->ssb.Parm[0] & SIGNAL_LOSS)
+ {
+ printk(KERN_INFO "%s: Signal Loss\n", dev->name);
+ tp->MacStat.line_errors++;
+ }
+
+ /* Adapter is closed, but initialized */
+ if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
+ {
+ printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
+ dev->name);
+ tp->MacStat.line_errors++;
+ }
+
+ if(tp->ssb.Parm[0] & RING_RECOVERY)
+ printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
+
+ /* Counter overflow: read error log */
+ if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
+ {
+ printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
+ tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
+ }
+
+ /* Adapter is closed, but initialized */
+ if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
+ printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
+ dev->name);
+
+ /* Adapter is closed, but initialized */
+ if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
+ printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
+ dev->name);
+
+ if(tp->ssb.Parm[0] & HARD_ERROR)
+ printk(KERN_INFO "%s: Hard Error\n", dev->name);
+
+ if(tp->ssb.Parm[0] & SOFT_ERROR)
+ printk(KERN_INFO "%s: Soft Error\n", dev->name);
+
+ if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
+ printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
+
+ if(tp->ssb.Parm[0] & SINGLE_STATION)
+ printk(KERN_INFO "%s: Single Station\n", dev->name);
+
+ /* Check if adapter has been closed */
+ if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
+ {
+ printk(KERN_INFO "%s: Adapter closed (Reopening),"
+ "CurrentRingStat %x\n",
+ dev->name, tp->CurrentRingStatus);
+ tp->AdapterOpenFlag = 0;
+ tms380tr_open_adapter(dev);
+ }
+
+ return;
+}
+
+/*
+ * Issued if adapter has encountered an unrecoverable hardware
+ * or software error.
+ */
+static void tms380tr_chk_irq(struct net_device *dev)
+{
+ int i;
+ unsigned short AdapterCheckBlock[4];
+ struct net_local *tp = netdev_priv(dev);
+
+ tp->AdapterOpenFlag = 0; /* Adapter closed now */
+
+ /* Page number of adapter memory */
+ SIFWRITEW(0x0001, SIFADX);
+ /* Address offset */
+ SIFWRITEW(CHECKADDR, SIFADR);
+
+ /* Reading 8 byte adapter check block. */
+ for(i = 0; i < 4; i++)
+ AdapterCheckBlock[i] = SIFREADW(SIFINC);
+
+ if(tms380tr_debug > 3)
+ {
+ printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
+ for (i = 0; i < 4; i++)
+ printk("%04X", AdapterCheckBlock[i]);
+ printk("\n");
+ }
+
+ switch(AdapterCheckBlock[0])
+ {
+ case DIO_PARITY:
+ printk(KERN_INFO "%s: DIO parity error\n", dev->name);
+ break;
+
+ case DMA_READ_ABORT:
+ printk(KERN_INFO "%s DMA read operation aborted:\n",
+ dev->name);
+ switch (AdapterCheckBlock[1])
+ {
+ case 0:
+ printk(KERN_INFO "Timeout\n");
+ printk(KERN_INFO "Address: %04X %04X\n",
+ AdapterCheckBlock[2],
+ AdapterCheckBlock[3]);
+ break;
+
+ case 1:
+ printk(KERN_INFO "Parity error\n");
+ printk(KERN_INFO "Address: %04X %04X\n",
+ AdapterCheckBlock[2],
+ AdapterCheckBlock[3]);
+ break;
+
+ case 2:
+ printk(KERN_INFO "Bus error\n");
+ printk(KERN_INFO "Address: %04X %04X\n",
+ AdapterCheckBlock[2],
+ AdapterCheckBlock[3]);
+ break;
+
+ default:
+ printk(KERN_INFO "Unknown error.\n");
+ break;
+ }
+ break;
+
+ case DMA_WRITE_ABORT:
+ printk(KERN_INFO "%s: DMA write operation aborted: \n",
+ dev->name);
+ switch (AdapterCheckBlock[1])
+ {
+ case 0:
+ printk(KERN_INFO "Timeout\n");
+ printk(KERN_INFO "Address: %04X %04X\n",
+ AdapterCheckBlock[2],
+ AdapterCheckBlock[3]);
+ break;
+
+ case 1:
+ printk(KERN_INFO "Parity error\n");
+ printk(KERN_INFO "Address: %04X %04X\n",
+ AdapterCheckBlock[2],
+ AdapterCheckBlock[3]);
+ break;
+
+ case 2:
+ printk(KERN_INFO "Bus error\n");
+ printk(KERN_INFO "Address: %04X %04X\n",
+ AdapterCheckBlock[2],
+ AdapterCheckBlock[3]);
+ break;
+
+ default:
+ printk(KERN_INFO "Unknown error.\n");
+ break;
+ }
+ break;
+
+ case ILLEGAL_OP_CODE:
+ printk(KERN_INFO "%s: Illegal operation code in firmware\n",
+ dev->name);
+ /* Parm[0-3]: adapter internal register R13-R15 */
+ break;
+
+ case PARITY_ERRORS:
+ printk(KERN_INFO "%s: Adapter internal bus parity error\n",
+ dev->name);
+ /* Parm[0-3]: adapter internal register R13-R15 */
+ break;
+
+ case RAM_DATA_ERROR:
+ printk(KERN_INFO "%s: RAM data error\n", dev->name);
+ /* Parm[0-1]: MSW/LSW address of RAM location. */
+ break;
+
+ case RAM_PARITY_ERROR:
+ printk(KERN_INFO "%s: RAM parity error\n", dev->name);
+ /* Parm[0-1]: MSW/LSW address of RAM location. */
+ break;
+
+ case RING_UNDERRUN:
+ printk(KERN_INFO "%s: Internal DMA underrun detected\n",
+ dev->name);
+ break;
+
+ case INVALID_IRQ:
+ printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
+ dev->name);
+ /* Parm[0-3]: adapter internal register R13-R15 */
+ break;
+
+ case INVALID_ERROR_IRQ:
+ printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
+ dev->name);
+ /* Parm[0-3]: adapter internal register R13-R15 */
+ break;
+
+ case INVALID_XOP:
+ printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
+ dev->name);
+ /* Parm[0-3]: adapter internal register R13-R15 */
+ break;
+
+ default:
+ printk(KERN_INFO "%s: Unknown status", dev->name);
+ break;
+ }
+
+ if(tms380tr_chipset_init(dev) == 1)
+ {
+ /* Restart of firmware successful */
+ tp->AdapterOpenFlag = 1;
+ }
+
+ return;
+}
+
+/*
+ * Internal adapter pointer to RAM data are copied from adapter into
+ * host system.
+ */
+static int tms380tr_read_ptr(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned short adapterram;
+
+ tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
+ ADAPTER_INT_PTRS, 16);
+ tms380tr_read_ram(dev, (unsigned char *)&adapterram,
+ cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
+ return be16_to_cpu(adapterram);
+}
+
+/*
+ * Reads a number of bytes from adapter to system memory.
+ */
+static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
+ unsigned short Address, int Length)
+{
+ int i;
+ unsigned short old_sifadx, old_sifadr, InWord;
+
+ /* Save the current values */
+ old_sifadx = SIFREADW(SIFADX);
+ old_sifadr = SIFREADW(SIFADR);
+
+ /* Page number of adapter memory */
+ SIFWRITEW(0x0001, SIFADX);
+ /* Address offset in adapter RAM */
+ SIFWRITEW(Address, SIFADR);
+
+ /* Copy len byte from adapter memory to system data area. */
+ i = 0;
+ for(;;)
+ {
+ InWord = SIFREADW(SIFINC);
+
+ *(Data + i) = HIBYTE(InWord); /* Write first byte */
+ if(++i == Length) /* All is done break */
+ break;
+
+ *(Data + i) = LOBYTE(InWord); /* Write second byte */
+ if (++i == Length) /* All is done break */
+ break;
+ }
+
+ /* Restore original values */
+ SIFWRITEW(old_sifadx, SIFADX);
+ SIFWRITEW(old_sifadr, SIFADR);
+
+ return;
+}
+
+/*
+ * Cancel all queued packets in the transmission queue.
+ */
+static void tms380tr_cancel_tx_queue(struct net_local* tp)
+{
+ TPL *tpl;
+
+ /*
+ * NOTE: There must not be an active TRANSMIT command pending, when
+ * this function is called.
+ */
+ if(tp->TransmitCommandActive)
+ return;
+
+ for(;;)
+ {
+ tpl = tp->TplBusy;
+ if(!tpl->BusyFlag)
+ break;
+ /* "Remove" TPL from busy list. */
+ tp->TplBusy = tpl->NextTPLPtr;
+ tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
+ tpl->BusyFlag = 0; /* "free" TPL */
+
+ printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
+ if (tpl->DMABuff)
+ pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE);
+ dev_kfree_skb_any(tpl->Skb);
+ }
+
+ return;
+}
+
+/*
+ * This function is called whenever a transmit interrupt is generated by the
+ * adapter. For a command complete interrupt, it is checked if we have to
+ * issue a new transmit command or not.
+ */
+static void tms380tr_tx_status_irq(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned char HighByte, HighAc, LowAc;
+ TPL *tpl;
+
+ /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
+ * available, because the CLEAR SSB command has already been issued.
+ *
+ * Process all complete transmissions.
+ */
+
+ for(;;)
+ {
+ tpl = tp->TplBusy;
+ if(!tpl->BusyFlag || (tpl->Status
+ & (TX_VALID | TX_FRAME_COMPLETE))
+ != TX_FRAME_COMPLETE)
+ {
+ break;
+ }
+
+ /* "Remove" TPL from busy list. */
+ tp->TplBusy = tpl->NextTPLPtr ;
+
+ /* Check the transmit status field only for directed frames*/
+ if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
+ {
+ HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
+ HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
+ LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
+
+ if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
+ {
+ printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
+ dev->name,
+ *(unsigned long *)&tpl->MData[2+2]);
+ }
+ else
+ {
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Directed frame tx'd\n",
+ dev->name);
+ }
+ }
+ else
+ {
+ if(!DIRECTED_FRAME(tpl))
+ {
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
+ dev->name);
+ }
+ }
+
+ tp->MacStat.tx_packets++;
+ if (tpl->DMABuff)
+ pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE);
+ dev_kfree_skb_irq(tpl->Skb);
+ tpl->BusyFlag = 0; /* "free" TPL */
+ }
+
+ if(!tp->TplFree->NextTPLPtr->BusyFlag)
+ netif_wake_queue(dev);
+ return;
+}
+
+/*
+ * Called if a frame receive interrupt is generated by the adapter.
+ * Check if the frame is valid and indicate it to system.
+ */
+static void tms380tr_rcv_status_irq(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned char *ReceiveDataPtr;
+ struct sk_buff *skb;
+ unsigned int Length, Length2;
+ RPL *rpl;
+ RPL *SaveHead;
+ dma_addr_t dmabuf;
+
+ /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
+ * available, because the CLEAR SSB command has already been issued.
+ *
+ * Process all complete receives.
+ */
+
+ for(;;)
+ {
+ rpl = tp->RplHead;
+ if(rpl->Status & RX_VALID)
+ break; /* RPL still in use by adapter */
+
+ /* Forward RPLHead pointer to next list. */
+ SaveHead = tp->RplHead;
+ tp->RplHead = rpl->NextRPLPtr;
+
+ /* Get the frame size (Byte swap for Intel).
+ * Do this early (see workaround comment below)
+ */
+ Length = be16_to_cpu((unsigned short)rpl->FrameSize);
+
+ /* Check if the Frame_Start, Frame_End and
+ * Frame_Complete bits are set.
+ */
+ if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
+ == VALID_SINGLE_BUFFER_FRAME)
+ {
+ ReceiveDataPtr = rpl->MData;
+
+ /* Workaround for delayed write of FrameSize on ISA
+ * (FrameSize is false but valid-bit is reset)
+ * Frame size is set to zero when the RPL is freed.
+ * Length2 is there because there have also been
+ * cases where the FrameSize was partially written
+ */
+ Length2 = be16_to_cpu((unsigned short)rpl->FrameSize);
+
+ if(Length == 0 || Length != Length2)
+ {
+ tp->RplHead = SaveHead;
+ break; /* Return to tms380tr_interrupt */
+ }
+ tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
+
+ if(tms380tr_debug > 3)
+ printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
+ dev->name, Length, Length);
+
+ /* Indicate the received frame to system the
+ * adapter does the Source-Routing padding for
+ * us. See: OpenOptions in tms380tr_init_opb()
+ */
+ skb = rpl->Skb;
+ if(rpl->SkbStat == SKB_UNAVAILABLE)
+ {
+ /* Try again to allocate skb */
+ skb = dev_alloc_skb(tp->MaxPacketSize);
+ if(skb == NULL)
+ {
+ /* Update Stats ?? */
+ }
+ else
+ {
+ skb->dev = dev;
+ skb_put(skb, tp->MaxPacketSize);
+ rpl->SkbStat = SKB_DATA_COPY;
+ ReceiveDataPtr = rpl->MData;
+ }
+ }
+
+ if(skb && (rpl->SkbStat == SKB_DATA_COPY
+ || rpl->SkbStat == SKB_DMA_DIRECT))
+ {
+ if(rpl->SkbStat == SKB_DATA_COPY)
+ memcpy(skb->data, ReceiveDataPtr, Length);
+
+ /* Deliver frame to system */
+ rpl->Skb = NULL;
+ skb_trim(skb,Length);
+ skb->protocol = tr_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->last_rx = jiffies;
+ }
+ }
+ else /* Invalid frame */
+ {
+ if(rpl->Skb != NULL)
+ dev_kfree_skb_irq(rpl->Skb);
+
+ /* Skip list. */
+ if(rpl->Status & RX_START_FRAME)
+ /* Frame start bit is set -> overflow. */
+ tp->MacStat.rx_errors++;
+ }
+ if (rpl->DMABuff)
+ pci_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, PCI_DMA_TODEVICE);
+ rpl->DMABuff = 0;
+
+ /* Allocate new skb for rpl */
+ rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
+ /* skb == NULL ? then use local buffer */
+ if(rpl->Skb == NULL)
+ {
+ rpl->SkbStat = SKB_UNAVAILABLE;
+ rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
+ rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
+ }
+ else /* skb != NULL */
+ {
+ rpl->Skb->dev = dev;
+ skb_put(rpl->Skb, tp->MaxPacketSize);
+
+ /* Data unreachable for DMA ? then use local buffer */
+ dmabuf = pci_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE);
+ if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
+ {
+ rpl->SkbStat = SKB_DATA_COPY;
+ rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
+ rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
+ }
+ else
+ {
+ /* DMA directly in skb->data */
+ rpl->SkbStat = SKB_DMA_DIRECT;
+ rpl->FragList[0].DataAddr = htonl(dmabuf);
+ rpl->MData = rpl->Skb->data;
+ rpl->DMABuff = dmabuf;
+ }
+ }
+
+ rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
+ rpl->FrameSize = 0;
+
+ /* Pass the last RPL back to the adapter */
+ tp->RplTail->FrameSize = 0;
+
+ /* Reset the CSTAT field in the list. */
+ tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
+
+ /* Current RPL becomes last one in list. */
+ tp->RplTail = tp->RplTail->NextRPLPtr;
+
+ /* Inform adapter about RPL valid. */
+ tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
+ }
+
+ return;
+}
+
+/*
+ * This function should be used whenever the status of any RPL must be
+ * modified by the driver, because the compiler may otherwise change the
+ * order of instructions such that writing the RPL status may be executed
+ * at an undesireable time. When this function is used, the status is
+ * always written when the function is called.
+ */
+static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
+{
+ rpl->Status = Status;
+
+ return;
+}
+
+/*
+ * The function updates the statistic counters in mac->MacStat.
+ * It differtiates between directed and broadcast/multicast ( ==functional)
+ * frames.
+ */
+static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
+ unsigned int Length)
+{
+ tp->MacStat.rx_packets++;
+ tp->MacStat.rx_bytes += Length;
+
+ /* Test functional bit */
+ if(DataPtr[2] & GROUP_BIT)
+ tp->MacStat.multicast++;
+
+ return;
+}
+
+static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct net_local *tp = netdev_priv(dev);
+ struct sockaddr *saddr = addr;
+
+ if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
+ printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
+ return -EIO;
+ }
+ memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
+ return 0;
+}
+
+#if TMS380TR_DEBUG > 0
+/*
+ * Dump Packet (data)
+ */
+static void tms380tr_dump(unsigned char *Data, int length)
+{
+ int i, j;
+
+ for (i = 0, j = 0; i < length / 8; i++, j += 8)
+ {
+ printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
+ Data[j+0],Data[j+1],Data[j+2],Data[j+3],
+ Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
+ }
+
+ return;
+}
+#endif
+
+void tmsdev_term(struct net_device *dev)
+{
+ struct net_local *tp;
+
+ tp = netdev_priv(dev);
+ pci_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
+ PCI_DMA_BIDIRECTIONAL);
+}
+
+int tmsdev_init(struct net_device *dev, unsigned long dmalimit,
+ struct pci_dev *pdev)
+{
+ struct net_local *tms_local;
+
+ memset(dev->priv, 0, sizeof(struct net_local));
+ tms_local = netdev_priv(dev);
+ init_waitqueue_head(&tms_local->wait_for_tok_int);
+ tms_local->dmalimit = dmalimit;
+ tms_local->pdev = pdev;
+ tms_local->dmabuffer = pci_map_single(pdev, (void *)tms_local,
+ sizeof(struct net_local), PCI_DMA_BIDIRECTIONAL);
+ if (tms_local->dmabuffer + sizeof(struct net_local) > dmalimit)
+ {
+ printk(KERN_INFO "%s: Memory not accessible for DMA\n",
+ dev->name);
+ tmsdev_term(dev);
+ return -ENOMEM;
+ }
+
+ /* These can be overridden by the card driver if needed */
+ dev->open = tms380tr_open;
+ dev->stop = tms380tr_close;
+ dev->do_ioctl = NULL;
+ dev->hard_start_xmit = tms380tr_send_packet;
+ dev->tx_timeout = tms380tr_timeout;
+ dev->watchdog_timeo = HZ;
+ dev->get_stats = tms380tr_get_stats;
+ dev->set_multicast_list = &tms380tr_set_multicast_list;
+ dev->set_mac_address = tms380tr_set_mac_address;
+
+ return 0;
+}
+
+#ifdef MODULE
+
+EXPORT_SYMBOL(tms380tr_open);
+EXPORT_SYMBOL(tms380tr_close);
+EXPORT_SYMBOL(tms380tr_interrupt);
+EXPORT_SYMBOL(tmsdev_init);
+EXPORT_SYMBOL(tmsdev_term);
+EXPORT_SYMBOL(tms380tr_wait);
+
+struct module *TMS380_module = NULL;
+
+int init_module(void)
+{
+ printk(KERN_DEBUG "%s", version);
+
+ TMS380_module = &__this_module;
+ return 0;
+}
+
+void cleanup_module(void)
+{
+ TMS380_module = NULL;
+}
+#endif
+
+MODULE_LICENSE("GPL");
+
+
+/*
+ * Local variables:
+ * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tms380tr.c"
+ * alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tms380tr.c"
+ * c-set-style "K&R"
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */