text:  /*
    * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
    * All rights reserved.  www.lanmedia.com
    * Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl>
    *
    * This code is written by:
    * Andrew Stanley-Jones (asj@cban.com)
    * Rob Braun (bbraun@vix.com),
    * Michael Graff (explorer@vix.com) and
    * Matt Thomas (matt@3am-software.com).
    *
    * With Help By:
    * David Boggs
    * Ron Crane
    * Alan Cox
    *
    * This software may be used and distributed according to the terms
    * of the GNU General Public License version 2, incorporated herein by reference.
    *
    * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards.
    *
    * To control link specific options lmcctl is required.
    * It can be obtained from ftp.lanmedia.com.
    *
    * Linux driver notes:
    * Linux uses the device struct lmc_private to pass private information
    * around.
    *
    * The initialization portion of this driver (the lmc_reset() and the
    * lmc_dec_reset() functions, as well as the led controls and the
    * lmc_initcsrs() functions.
    *
    * The watchdog function runs every second and checks to see if
    * we still have link, and that the timing source is what we expected
    * it to be.  If link is lost, the interface is marked down, and
    * we no longer can transmit.
    *
    */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/string.h>
  #include <linux/timer.h>
  #include <linux/ptrace.h>
  #include <linux/errno.h>
  #include <linux/ioport.h>
  #include <linux/slab.h>
  #include <linux/interrupt.h>
  #include <linux/pci.h>
  #include <linux/delay.h>
  #include <linux/hdlc.h>
  #include <linux/init.h>
  #include <linux/in.h>
  #include <linux/if_arp.h>
  #include <linux/netdevice.h>
  #include <linux/etherdevice.h>
  #include <linux/skbuff.h>
  #include <linux/inet.h>
  #include <linux/bitops.h>
  #include <asm/processor.h>             /* Processor type for cache alignment. */
  #include <asm/io.h>
  #include <asm/dma.h>
  #include <asm/uaccess.h>
  //#include <asm/spinlock.h>
  
  #define DRIVER_MAJOR_VERSION     1
  #define DRIVER_MINOR_VERSION    34
  #define DRIVER_SUB_VERSION       0
  
  #define DRIVER_VERSION  ((DRIVER_MAJOR_VERSION << 8) + DRIVER_MINOR_VERSION)
  
  #include "lmc.h"
  #include "lmc_var.h"
  #include "lmc_ioctl.h"
  #include "lmc_debug.h"
  #include "lmc_proto.h"
  
  static int LMC_PKT_BUF_SZ = 1542;
  
  static DEFINE_PCI_DEVICE_TABLE(lmc_pci_tbl) = {
  	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST,
  	  PCI_VENDOR_ID_LMC, PCI_ANY_ID },
  	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST,
  	  PCI_ANY_ID, PCI_VENDOR_ID_LMC },
  	{ 0 }
  };
  
  MODULE_DEVICE_TABLE(pci, lmc_pci_tbl);
  MODULE_LICENSE("GPL v2");
  
  
  static netdev_tx_t lmc_start_xmit(struct sk_buff *skb,
  					struct net_device *dev);
  static int lmc_rx (struct net_device *dev);
  static int lmc_open(struct net_device *dev);
  static int lmc_close(struct net_device *dev);
  static struct net_device_stats *lmc_get_stats(struct net_device *dev);
  static irqreturn_t lmc_interrupt(int irq, void *dev_instance);
  static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, size_t csr_size);
  static void lmc_softreset(lmc_softc_t * const);
  static void lmc_running_reset(struct net_device *dev);
  static int lmc_ifdown(struct net_device * const);
  static void lmc_watchdog(unsigned long data);
  static void lmc_reset(lmc_softc_t * const sc);
  static void lmc_dec_reset(lmc_softc_t * const sc);
  static void lmc_driver_timeout(struct net_device *dev);
  
  /*
   * linux reserves 16 device specific IOCTLs.  We call them
   * LMCIOC* to control various bits of our world.
   */
  int lmc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      lmc_ctl_t ctl;
      int ret = -EOPNOTSUPP;
      u16 regVal;
      unsigned long flags;
  
      lmc_trace(dev, "lmc_ioctl in");
  
      /*
       * Most functions mess with the structure
       * Disable interrupts while we do the polling
       */
  
      switch (cmd) {
          /*
           * Return current driver state.  Since we keep this up
           * To date internally, just copy this out to the user.
           */
      case LMCIOCGINFO: /*fold01*/
  	if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof(lmc_ctl_t)))
  		ret = -EFAULT;
  	else
  		ret = 0;
          break;
  
      case LMCIOCSINFO: /*fold01*/
          if (!capable(CAP_NET_ADMIN)) {
              ret = -EPERM;
              break;
          }
  
          if(dev->flags & IFF_UP){
              ret = -EBUSY;
              break;
          }
  
  	if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
  		ret = -EFAULT;
  		break;
  	}
  
  	spin_lock_irqsave(&sc->lmc_lock, flags);
          sc->lmc_media->set_status (sc, &ctl);
  
          if(ctl.crc_length != sc->ictl.crc_length) {
              sc->lmc_media->set_crc_length(sc, ctl.crc_length);
  	    if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16)
  		sc->TxDescriptControlInit |=  LMC_TDES_ADD_CRC_DISABLE;
  	    else
  		sc->TxDescriptControlInit &= ~LMC_TDES_ADD_CRC_DISABLE;
          }
  	spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
          ret = 0;
          break;
  
      case LMCIOCIFTYPE: /*fold01*/
          {
  	    u16 old_type = sc->if_type;
  	    u16	new_type;
  
  	    if (!capable(CAP_NET_ADMIN)) {
  		ret = -EPERM;
  		break;
  	    }
  
  	    if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u16))) {
  		ret = -EFAULT;
  		break;
  	    }
  
              
  	    if (new_type == old_type)
  	    {
  		ret = 0 ;
  		break;				/* no change */
              }
              
  	    spin_lock_irqsave(&sc->lmc_lock, flags);
              lmc_proto_close(sc);
  
              sc->if_type = new_type;
              lmc_proto_attach(sc);
  	    ret = lmc_proto_open(sc);
  	    spin_unlock_irqrestore(&sc->lmc_lock, flags);
  	    break;
  	}
  
      case LMCIOCGETXINFO: /*fold01*/
  	spin_lock_irqsave(&sc->lmc_lock, flags);
          sc->lmc_xinfo.Magic0 = 0xBEEFCAFE;
  
          sc->lmc_xinfo.PciCardType = sc->lmc_cardtype;
          sc->lmc_xinfo.PciSlotNumber = 0;
          sc->lmc_xinfo.DriverMajorVersion = DRIVER_MAJOR_VERSION;
          sc->lmc_xinfo.DriverMinorVersion = DRIVER_MINOR_VERSION;
          sc->lmc_xinfo.DriverSubVersion = DRIVER_SUB_VERSION;
          sc->lmc_xinfo.XilinxRevisionNumber =
              lmc_mii_readreg (sc, 0, 3) & 0xf;
          sc->lmc_xinfo.MaxFrameSize = LMC_PKT_BUF_SZ;
          sc->lmc_xinfo.link_status = sc->lmc_media->get_link_status (sc);
          sc->lmc_xinfo.mii_reg16 = lmc_mii_readreg (sc, 0, 16);
  	spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
          sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
  
          if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo,
  			 sizeof(struct lmc_xinfo)))
  		ret = -EFAULT;
  	else
  		ret = 0;
  
          break;
  
      case LMCIOCGETLMCSTATS:
  	    spin_lock_irqsave(&sc->lmc_lock, flags);
  	    if (sc->lmc_cardtype == LMC_CARDTYPE_T1) {
  		    lmc_mii_writereg(sc, 0, 17, T1FRAMER_FERR_LSB);
  		    sc->extra_stats.framingBitErrorCount +=
  			    lmc_mii_readreg(sc, 0, 18) & 0xff;
  		    lmc_mii_writereg(sc, 0, 17, T1FRAMER_FERR_MSB);
  		    sc->extra_stats.framingBitErrorCount +=
  			    (lmc_mii_readreg(sc, 0, 18) & 0xff) << 8;
  		    lmc_mii_writereg(sc, 0, 17, T1FRAMER_LCV_LSB);
  		    sc->extra_stats.lineCodeViolationCount +=
  			    lmc_mii_readreg(sc, 0, 18) & 0xff;
  		    lmc_mii_writereg(sc, 0, 17, T1FRAMER_LCV_MSB);
  		    sc->extra_stats.lineCodeViolationCount +=
  			    (lmc_mii_readreg(sc, 0, 18) & 0xff) << 8;
  		    lmc_mii_writereg(sc, 0, 17, T1FRAMER_AERR);
  		    regVal = lmc_mii_readreg(sc, 0, 18) & 0xff;
  
  		    sc->extra_stats.lossOfFrameCount +=
  			    (regVal & T1FRAMER_LOF_MASK) >> 4;
  		    sc->extra_stats.changeOfFrameAlignmentCount +=
  			    (regVal & T1FRAMER_COFA_MASK) >> 2;
  		    sc->extra_stats.severelyErroredFrameCount +=
  			    regVal & T1FRAMER_SEF_MASK;
  	    }
  	    spin_unlock_irqrestore(&sc->lmc_lock, flags);
  	    if (copy_to_user(ifr->ifr_data, &sc->lmc_device->stats,
  			     sizeof(sc->lmc_device->stats)) ||
  		copy_to_user(ifr->ifr_data + sizeof(sc->lmc_device->stats),
  			     &sc->extra_stats, sizeof(sc->extra_stats)))
  		    ret = -EFAULT;
  	    else
  		    ret = 0;
  	    break;
  
      case LMCIOCCLEARLMCSTATS:
  	    if (!capable(CAP_NET_ADMIN)) {
  		    ret = -EPERM;
  		    break;
  	    }
  
  	    spin_lock_irqsave(&sc->lmc_lock, flags);
  	    memset(&sc->lmc_device->stats, 0, sizeof(sc->lmc_device->stats));
  	    memset(&sc->extra_stats, 0, sizeof(sc->extra_stats));
  	    sc->extra_stats.check = STATCHECK;
  	    sc->extra_stats.version_size = (DRIVER_VERSION << 16) +
  		    sizeof(sc->lmc_device->stats) + sizeof(sc->extra_stats);
  	    sc->extra_stats.lmc_cardtype = sc->lmc_cardtype;
  	    spin_unlock_irqrestore(&sc->lmc_lock, flags);
  	    ret = 0;
  	    break;
  
      case LMCIOCSETCIRCUIT: /*fold01*/
          if (!capable(CAP_NET_ADMIN)){
              ret = -EPERM;
              break;
          }
  
          if(dev->flags & IFF_UP){
              ret = -EBUSY;
              break;
          }
  
  	if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
  		ret = -EFAULT;
  		break;
  	}
  	spin_lock_irqsave(&sc->lmc_lock, flags);
          sc->lmc_media->set_circuit_type(sc, ctl.circuit_type);
          sc->ictl.circuit_type = ctl.circuit_type;
  	spin_unlock_irqrestore(&sc->lmc_lock, flags);
          ret = 0;
  
          break;
  
      case LMCIOCRESET: /*fold01*/
          if (!capable(CAP_NET_ADMIN)){
              ret = -EPERM;
              break;
          }
  
  	spin_lock_irqsave(&sc->lmc_lock, flags);
          /* Reset driver and bring back to current state */
          printk (" REG16 before reset +%04x\n", lmc_mii_readreg (sc, 0, 16));
          lmc_running_reset (dev);
          printk (" REG16 after reset +%04x\n", lmc_mii_readreg (sc, 0, 16));
  
          LMC_EVENT_LOG(LMC_EVENT_FORCEDRESET, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16));
  	spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
          ret = 0;
          break;
  
  #ifdef DEBUG
      case LMCIOCDUMPEVENTLOG:
  	if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof(u32))) {
  		ret = -EFAULT;
  		break;
  	}
  	if (copy_to_user(ifr->ifr_data + sizeof(u32), lmcEventLogBuf,
  			 sizeof(lmcEventLogBuf)))
  		ret = -EFAULT;
  	else
  		ret = 0;
  
          break;
  #endif /* end ifdef _DBG_EVENTLOG */
      case LMCIOCT1CONTROL: /*fold01*/
          if (sc->lmc_cardtype != LMC_CARDTYPE_T1){
              ret = -EOPNOTSUPP;
              break;
          }
          break;
      case LMCIOCXILINX: /*fold01*/
          {
              struct lmc_xilinx_control xc; /*fold02*/
  
              if (!capable(CAP_NET_ADMIN)){
                  ret = -EPERM;
                  break;
              }
  
              /*
               * Stop the xwitter whlie we restart the hardware
               */
              netif_stop_queue(dev);
  
  	    if (copy_from_user(&xc, ifr->ifr_data, sizeof(struct lmc_xilinx_control))) {
  		ret = -EFAULT;
  		break;
  	    }
              switch(xc.command){
              case lmc_xilinx_reset: /*fold02*/
                  {
                      u16 mii;
  		    spin_lock_irqsave(&sc->lmc_lock, flags);
                      mii = lmc_mii_readreg (sc, 0, 16);
  
                      /*
                       * Make all of them 0 and make input
                       */
                      lmc_gpio_mkinput(sc, 0xff);
  
                      /*
                       * make the reset output
                       */
                      lmc_gpio_mkoutput(sc, LMC_GEP_RESET);
  
                      /*
                       * RESET low to force configuration.  This also forces
                       * the transmitter clock to be internal, but we expect to reset
                       * that later anyway.
                       */
  
                      sc->lmc_gpio &= ~LMC_GEP_RESET;
                      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
  
  
                      /*
                       * hold for more than 10 microseconds
                       */
                      udelay(50);
  
                      sc->lmc_gpio |= LMC_GEP_RESET;
                      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
  
  
                      /*
                       * stop driving Xilinx-related signals
                       */
                      lmc_gpio_mkinput(sc, 0xff);
  
                      /* Reset the frammer hardware */
                      sc->lmc_media->set_link_status (sc, 1);
                      sc->lmc_media->set_status (sc, NULL);
  //                    lmc_softreset(sc);
  
                      {
                          int i;
                          for(i = 0; i < 5; i++){
                              lmc_led_on(sc, LMC_DS3_LED0);
                              mdelay(100);
                              lmc_led_off(sc, LMC_DS3_LED0);
                              lmc_led_on(sc, LMC_DS3_LED1);
                              mdelay(100);
                              lmc_led_off(sc, LMC_DS3_LED1);
                              lmc_led_on(sc, LMC_DS3_LED3);
                              mdelay(100);
                              lmc_led_off(sc, LMC_DS3_LED3);
                              lmc_led_on(sc, LMC_DS3_LED2);
                              mdelay(100);
                              lmc_led_off(sc, LMC_DS3_LED2);
                          }
                      }
  		    spin_unlock_irqrestore(&sc->lmc_lock, flags);
                      
                      
  
                      ret = 0x0;
  
                  }
  
                  break;
              case lmc_xilinx_load_prom: /*fold02*/
                  {
                      u16 mii;
                      int timeout = 500000;
  		    spin_lock_irqsave(&sc->lmc_lock, flags);
                      mii = lmc_mii_readreg (sc, 0, 16);
  
                      /*
                       * Make all of them 0 and make input
                       */
                      lmc_gpio_mkinput(sc, 0xff);
  
                      /*
                       * make the reset output
                       */
                      lmc_gpio_mkoutput(sc,  LMC_GEP_DP | LMC_GEP_RESET);
  
                      /*
                       * RESET low to force configuration.  This also forces
                       * the transmitter clock to be internal, but we expect to reset
                       * that later anyway.
                       */
  
                      sc->lmc_gpio &= ~(LMC_GEP_RESET | LMC_GEP_DP);
                      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
  
  
                      /*
                       * hold for more than 10 microseconds
                       */
                      udelay(50);
  
                      sc->lmc_gpio |= LMC_GEP_DP | LMC_GEP_RESET;
                      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
  
                      /*
                       * busy wait for the chip to reset
                       */
                      while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 &&
                             (timeout-- > 0))
                          cpu_relax();
  
  
                      /*
                       * stop driving Xilinx-related signals
                       */
                      lmc_gpio_mkinput(sc, 0xff);
  		    spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
                      ret = 0x0;
                      
  
                      break;
  
                  }
  
              case lmc_xilinx_load: /*fold02*/
                  {
                      char *data;
                      int pos;
                      int timeout = 500000;
  
                      if (!xc.data) {
                              ret = -EINVAL;
                              break;
                      }
  
                      data = kmalloc(xc.len, GFP_KERNEL);
                      if (!data) {
                              printk(KERN_WARNING "%s: Failed to allocate memory for copy\n", dev->name);
                              ret = -ENOMEM;
                              break;
                      }
                      
                      if(copy_from_user(data, xc.data, xc.len))
                      {
                      	kfree(data);
                      	ret = -ENOMEM;
                      	break;
                      }
  
                      printk("%s: Starting load of data Len: %d at 0x%p == 0x%p\n", dev->name, xc.len, xc.data, data);
  
  		    spin_lock_irqsave(&sc->lmc_lock, flags);
                      lmc_gpio_mkinput(sc, 0xff);
  
                      /*
                       * Clear the Xilinx and start prgramming from the DEC
                       */
  
                      /*
                       * Set ouput as:
                       * Reset: 0 (active)
                       * DP:    0 (active)
                       * Mode:  1
                       *
                       */
                      sc->lmc_gpio = 0x00;
                      sc->lmc_gpio &= ~LMC_GEP_DP;
                      sc->lmc_gpio &= ~LMC_GEP_RESET;
                      sc->lmc_gpio |=  LMC_GEP_MODE;
                      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
  
                      lmc_gpio_mkoutput(sc, LMC_GEP_MODE | LMC_GEP_DP | LMC_GEP_RESET);
  
                      /*
                       * Wait at least 10 us 20 to be safe
                       */
                      udelay(50);
  
                      /*
                       * Clear reset and activate programming lines
                       * Reset: Input
                       * DP:    Input
                       * Clock: Output
                       * Data:  Output
                       * Mode:  Output
                       */
                      lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET);
  
                      /*
                       * Set LOAD, DATA, Clock to 1
                       */
                      sc->lmc_gpio = 0x00;
                      sc->lmc_gpio |= LMC_GEP_MODE;
                      sc->lmc_gpio |= LMC_GEP_DATA;
                      sc->lmc_gpio |= LMC_GEP_CLK;
                      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
                      
                      lmc_gpio_mkoutput(sc, LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_MODE );
  
                      /*
                       * busy wait for the chip to reset
                       */
                      while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 &&
                             (timeout-- > 0))
                          cpu_relax();
  
                      printk(KERN_DEBUG "%s: Waited %d for the Xilinx to clear it's memory\n", dev->name, 500000-timeout);
  
                      for(pos = 0; pos < xc.len; pos++){
                          switch(data[pos]){
                          case 0:
                              sc->lmc_gpio &= ~LMC_GEP_DATA; /* Data is 0 */
                              break;
                          case 1:
                              sc->lmc_gpio |= LMC_GEP_DATA; /* Data is 1 */
                              break;
                          default:
                              printk(KERN_WARNING "%s Bad data in xilinx programming data at %d, got %d wanted 0 or 1\n", dev->name, pos, data[pos]);
                              sc->lmc_gpio |= LMC_GEP_DATA; /* Assume it's 1 */
                          }
                          sc->lmc_gpio &= ~LMC_GEP_CLK; /* Clock to zero */
                          sc->lmc_gpio |= LMC_GEP_MODE;
                          LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
                          udelay(1);
                          
                          sc->lmc_gpio |= LMC_GEP_CLK; /* Put the clack back to one */
                          sc->lmc_gpio |= LMC_GEP_MODE;
                          LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
                          udelay(1);
                      }
                      if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0){
                          printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (corrupted data)\n", dev->name);
                      }
                      else if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0){
                          printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (done)\n", dev->name);
                      }
                      else {
                          printk(KERN_DEBUG "%s: Done reprogramming Xilinx, %d bits, good luck!\n", dev->name, pos);
                      }
  
                      lmc_gpio_mkinput(sc, 0xff);
                      
                      sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET;
                      lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
  
                      sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET;
                      lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
  		    spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
                      kfree(data);
                      
                      ret = 0;
                      
                      break;
                  }
              default: /*fold02*/
                  ret = -EBADE;
                  break;
              }
  
              netif_wake_queue(dev);
              sc->lmc_txfull = 0;
  
          }
          break;
      default: /*fold01*/
          /* If we don't know what to do, give the protocol a shot. */
          ret = lmc_proto_ioctl (sc, ifr, cmd);
          break;
      }
  
      lmc_trace(dev, "lmc_ioctl out");
  
      return ret;
  }
  
  
  /* the watchdog process that cruises around */
  static void lmc_watchdog (unsigned long data) /*fold00*/
  {
      struct net_device *dev = (struct net_device *)data;
      lmc_softc_t *sc = dev_to_sc(dev);
      int link_status;
      u32 ticks;
      unsigned long flags;
  
      lmc_trace(dev, "lmc_watchdog in");
  
      spin_lock_irqsave(&sc->lmc_lock, flags);
  
      if(sc->check != 0xBEAFCAFE){
          printk("LMC: Corrupt net_device struct, breaking out\n");
  	spin_unlock_irqrestore(&sc->lmc_lock, flags);
          return;
      }
  
  
      /* Make sure the tx jabber and rx watchdog are off,
       * and the transmit and receive processes are running.
       */
  
      LMC_CSR_WRITE (sc, csr_15, 0x00000011);
      sc->lmc_cmdmode |= TULIP_CMD_TXRUN | TULIP_CMD_RXRUN;
      LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode);
  
      if (sc->lmc_ok == 0)
          goto kick_timer;
  
      LMC_EVENT_LOG(LMC_EVENT_WATCHDOG, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16));
  
      /* --- begin time out check -----------------------------------
       * check for a transmit interrupt timeout
       * Has the packet xmt vs xmt serviced threshold been exceeded */
      if (sc->lmc_taint_tx == sc->lastlmc_taint_tx &&
  	sc->lmc_device->stats.tx_packets > sc->lasttx_packets &&
  	sc->tx_TimeoutInd == 0)
      {
  
          /* wait for the watchdog to come around again */
          sc->tx_TimeoutInd = 1;
      }
      else if (sc->lmc_taint_tx == sc->lastlmc_taint_tx &&
  	     sc->lmc_device->stats.tx_packets > sc->lasttx_packets &&
  	     sc->tx_TimeoutInd)
      {
  
          LMC_EVENT_LOG(LMC_EVENT_XMTINTTMO, LMC_CSR_READ (sc, csr_status), 0);
  
          sc->tx_TimeoutDisplay = 1;
  	sc->extra_stats.tx_TimeoutCnt++;
  
          /* DEC chip is stuck, hit it with a RESET!!!! */
          lmc_running_reset (dev);
  
  
          /* look at receive & transmit process state to make sure they are running */
          LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
  
          /* look at: DSR - 02  for Reg 16
           *                  CTS - 08
           *                  DCD - 10
           *                  RI  - 20
           * for Reg 17
           */
          LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg (sc, 0, 16), lmc_mii_readreg (sc, 0, 17));
  
          /* reset the transmit timeout detection flag */
          sc->tx_TimeoutInd = 0;
          sc->lastlmc_taint_tx = sc->lmc_taint_tx;
  	sc->lasttx_packets = sc->lmc_device->stats.tx_packets;
      } else {
          sc->tx_TimeoutInd = 0;
          sc->lastlmc_taint_tx = sc->lmc_taint_tx;
  	sc->lasttx_packets = sc->lmc_device->stats.tx_packets;
      }
  
      /* --- end time out check ----------------------------------- */
  
  
      link_status = sc->lmc_media->get_link_status (sc);
  
      /*
       * hardware level link lost, but the interface is marked as up.
       * Mark it as down.
       */
      if ((link_status == 0) && (sc->last_link_status != 0)) {
          printk(KERN_WARNING "%s: hardware/physical link down\n", dev->name);
          sc->last_link_status = 0;
          /* lmc_reset (sc); Why reset??? The link can go down ok */
  
          /* Inform the world that link has been lost */
  	netif_carrier_off(dev);
      }
  
      /*
       * hardware link is up, but the interface is marked as down.
       * Bring it back up again.
       */
       if (link_status != 0 && sc->last_link_status == 0) {
           printk(KERN_WARNING "%s: hardware/physical link up\n", dev->name);
           sc->last_link_status = 1;
           /* lmc_reset (sc); Again why reset??? */
  
  	 netif_carrier_on(dev);
       }
  
      /* Call media specific watchdog functions */
      sc->lmc_media->watchdog(sc);
  
      /*
       * Poke the transmitter to make sure it
       * never stops, even if we run out of mem
       */
      LMC_CSR_WRITE(sc, csr_rxpoll, 0);
  
      /*
       * Check for code that failed
       * and try and fix it as appropriate
       */
      if(sc->failed_ring == 1){
          /*
           * Failed to setup the recv/xmit rin
           * Try again
           */
          sc->failed_ring = 0;
          lmc_softreset(sc);
      }
      if(sc->failed_recv_alloc == 1){
          /*
           * We failed to alloc mem in the
           * interrupt handler, go through the rings
           * and rebuild them
           */
          sc->failed_recv_alloc = 0;
          lmc_softreset(sc);
      }
  
  
      /*
       * remember the timer value
       */
  kick_timer:
  
      ticks = LMC_CSR_READ (sc, csr_gp_timer);
      LMC_CSR_WRITE (sc, csr_gp_timer, 0xffffffffUL);
      sc->ictl.ticks = 0x0000ffff - (ticks & 0x0000ffff);
  
      /*
       * restart this timer.
       */
      sc->timer.expires = jiffies + (HZ);
      add_timer (&sc->timer);
  
      spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
      lmc_trace(dev, "lmc_watchdog out");
  
  }
  
  static int lmc_attach(struct net_device *dev, unsigned short encoding,
  		      unsigned short parity)
  {
  	if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)
  		return 0;
  	return -EINVAL;
  }
  
  static const struct net_device_ops lmc_ops = {
  	.ndo_open       = lmc_open,
  	.ndo_stop       = lmc_close,
  	.ndo_change_mtu = hdlc_change_mtu,
  	.ndo_start_xmit = hdlc_start_xmit,
  	.ndo_do_ioctl   = lmc_ioctl,
  	.ndo_tx_timeout = lmc_driver_timeout,
  	.ndo_get_stats  = lmc_get_stats,
  };
  
  static int __devinit lmc_init_one(struct pci_dev *pdev,
  				  const struct pci_device_id *ent)
  {
  	lmc_softc_t *sc;
  	struct net_device *dev;
  	u16 subdevice;
  	u16 AdapModelNum;
  	int err;
  	static int cards_found;
  
  	/* lmc_trace(dev, "lmc_init_one in"); */
  
  	err = pci_enable_device(pdev);
  	if (err) {
  		printk(KERN_ERR "lmc: pci enable failed: %d\n", err);
  		return err;
  	}
  
  	err = pci_request_regions(pdev, "lmc");
  	if (err) {
  		printk(KERN_ERR "lmc: pci_request_region failed\n");
  		goto err_req_io;
  	}
  
  	/*
  	 * Allocate our own device structure
  	 */
  	sc = kzalloc(sizeof(lmc_softc_t), GFP_KERNEL);
  	if (!sc) {
  		err = -ENOMEM;
  		goto err_kzalloc;
  	}
  
  	dev = alloc_hdlcdev(sc);
  	if (!dev) {
  		printk(KERN_ERR "lmc:alloc_netdev for device failed\n");
  		goto err_hdlcdev;
  	}
  
  
  	dev->type = ARPHRD_HDLC;
  	dev_to_hdlc(dev)->xmit = lmc_start_xmit;
  	dev_to_hdlc(dev)->attach = lmc_attach;
  	dev->netdev_ops = &lmc_ops;
  	dev->watchdog_timeo = HZ; /* 1 second */
  	dev->tx_queue_len = 100;
  	sc->lmc_device = dev;
  	sc->name = dev->name;
  	sc->if_type = LMC_PPP;
  	sc->check = 0xBEAFCAFE;
  	dev->base_addr = pci_resource_start(pdev, 0);
  	dev->irq = pdev->irq;
  	pci_set_drvdata(pdev, dev);
  	SET_NETDEV_DEV(dev, &pdev->dev);
  
  	/*
  	 * This will get the protocol layer ready and do any 1 time init's
  	 * Must have a valid sc and dev structure
  	 */
  	lmc_proto_attach(sc);
  
  	/* Init the spin lock so can call it latter */
  
  	spin_lock_init(&sc->lmc_lock);
  	pci_set_master(pdev);
  
  	printk(KERN_INFO "%s: detected at %lx, irq %d\n", dev->name,
  	       dev->base_addr, dev->irq);
  
  	err = register_hdlc_device(dev);
  	if (err) {
  		printk(KERN_ERR "%s: register_netdev failed.\n", dev->name);
  		free_netdev(dev);
  		goto err_hdlcdev;
  	}
  
      sc->lmc_cardtype = LMC_CARDTYPE_UNKNOWN;
      sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
  
      /*
       *
       * Check either the subvendor or the subdevice, some systems reverse
       * the setting in the bois, seems to be version and arch dependent?
       * Fix the error, exchange the two values 
       */
      if ((subdevice = pdev->subsystem_device) == PCI_VENDOR_ID_LMC)
  	    subdevice = pdev->subsystem_vendor;
  
      switch (subdevice) {
      case PCI_DEVICE_ID_LMC_HSSI:
  	printk(KERN_INFO "%s: LMC HSSI\n", dev->name);
          sc->lmc_cardtype = LMC_CARDTYPE_HSSI;
          sc->lmc_media = &lmc_hssi_media;
          break;
      case PCI_DEVICE_ID_LMC_DS3:
  	printk(KERN_INFO "%s: LMC DS3\n", dev->name);
          sc->lmc_cardtype = LMC_CARDTYPE_DS3;
          sc->lmc_media = &lmc_ds3_media;
          break;
      case PCI_DEVICE_ID_LMC_SSI:
  	printk(KERN_INFO "%s: LMC SSI\n", dev->name);
          sc->lmc_cardtype = LMC_CARDTYPE_SSI;
          sc->lmc_media = &lmc_ssi_media;
          break;
      case PCI_DEVICE_ID_LMC_T1:
  	printk(KERN_INFO "%s: LMC T1\n", dev->name);
          sc->lmc_cardtype = LMC_CARDTYPE_T1;
          sc->lmc_media = &lmc_t1_media;
          break;
      default:
  	printk(KERN_WARNING "%s: LMC UNKNOWN CARD!\n", dev->name);
          break;
      }
  
      lmc_initcsrs (sc, dev->base_addr, 8);
  
      lmc_gpio_mkinput (sc, 0xff);
      sc->lmc_gpio = 0;		/* drive no signals yet */
  
      sc->lmc_media->defaults (sc);
  
      sc->lmc_media->set_link_status (sc, LMC_LINK_UP);
  
      /* verify that the PCI Sub System ID matches the Adapter Model number
       * from the MII register
       */
      AdapModelNum = (lmc_mii_readreg (sc, 0, 3) & 0x3f0) >> 4;
  
      if ((AdapModelNum != LMC_ADAP_T1 || /* detect LMC1200 */
  	 subdevice != PCI_DEVICE_ID_LMC_T1) &&
  	(AdapModelNum != LMC_ADAP_SSI || /* detect LMC1000 */
  	 subdevice != PCI_DEVICE_ID_LMC_SSI) &&
  	(AdapModelNum != LMC_ADAP_DS3 || /* detect LMC5245 */
  	 subdevice != PCI_DEVICE_ID_LMC_DS3) &&
  	(AdapModelNum != LMC_ADAP_HSSI || /* detect LMC5200 */
  	 subdevice != PCI_DEVICE_ID_LMC_HSSI))
  	    printk(KERN_WARNING "%s: Model number (%d) miscompare for PCI"
  		   " Subsystem ID = 0x%04x\n",
  		   dev->name, AdapModelNum, subdevice);
  
      /*
       * reset clock
       */
      LMC_CSR_WRITE (sc, csr_gp_timer, 0xFFFFFFFFUL);
  
      sc->board_idx = cards_found++;
      sc->extra_stats.check = STATCHECK;
      sc->extra_stats.version_size = (DRIVER_VERSION << 16) +
  	    sizeof(sc->lmc_device->stats) + sizeof(sc->extra_stats);
      sc->extra_stats.lmc_cardtype = sc->lmc_cardtype;
  
      sc->lmc_ok = 0;
      sc->last_link_status = 0;
  
      lmc_trace(dev, "lmc_init_one out");
      return 0;
  
  err_hdlcdev:
  	pci_set_drvdata(pdev, NULL);
  	kfree(sc);
  err_kzalloc:
  	pci_release_regions(pdev);
  err_req_io:
  	pci_disable_device(pdev);
  	return err;
  }
  
  /*
   * Called from pci when removing module.
   */
  static void __devexit lmc_remove_one(struct pci_dev *pdev)
  {
  	struct net_device *dev = pci_get_drvdata(pdev);
  
  	if (dev) {
  		printk(KERN_DEBUG "%s: removing...\n", dev->name);
  		unregister_hdlc_device(dev);
  		free_netdev(dev);
  		pci_release_regions(pdev);
  		pci_disable_device(pdev);
  		pci_set_drvdata(pdev, NULL);
  	}
  }
  
  /* After this is called, packets can be sent.
   * Does not initialize the addresses
   */
  static int lmc_open(struct net_device *dev)
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      int err;
  
      lmc_trace(dev, "lmc_open in");
  
      lmc_led_on(sc, LMC_DS3_LED0);
  
      lmc_dec_reset(sc);
      lmc_reset(sc);
  
      LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ(sc, csr_status), 0);
      LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg(sc, 0, 16),
  		  lmc_mii_readreg(sc, 0, 17));
  
      if (sc->lmc_ok){
          lmc_trace(dev, "lmc_open lmc_ok out");
          return 0;
      }
  
      lmc_softreset (sc);
  
      /* Since we have to use PCI bus, this should work on x86,alpha,ppc */
      if (request_irq (dev->irq, lmc_interrupt, IRQF_SHARED, dev->name, dev)){
          printk(KERN_WARNING "%s: could not get irq: %d\n", dev->name, dev->irq);
          lmc_trace(dev, "lmc_open irq failed out");
          return -EAGAIN;
      }
      sc->got_irq = 1;
  
      /* Assert Terminal Active */
      sc->lmc_miireg16 |= LMC_MII16_LED_ALL;
      sc->lmc_media->set_link_status (sc, LMC_LINK_UP);
  
      /*
       * reset to last state.
       */
      sc->lmc_media->set_status (sc, NULL);
  
      /* setup default bits to be used in tulip_desc_t transmit descriptor
       * -baz */
      sc->TxDescriptControlInit = (
                                   LMC_TDES_INTERRUPT_ON_COMPLETION
                                   | LMC_TDES_FIRST_SEGMENT
                                   | LMC_TDES_LAST_SEGMENT
                                   | LMC_TDES_SECOND_ADDR_CHAINED
                                   | LMC_TDES_DISABLE_PADDING
                                  );
  
      if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) {
          /* disable 32 bit CRC generated by ASIC */
          sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE;
      }
      sc->lmc_media->set_crc_length(sc, sc->ictl.crc_length);
      /* Acknoledge the Terminal Active and light LEDs */
  
      /* dev->flags |= IFF_UP; */
  
      if ((err = lmc_proto_open(sc)) != 0)
  	    return err;
  
      netif_start_queue(dev);
      sc->extra_stats.tx_tbusy0++;
  
      /*
       * select what interrupts we want to get
       */
      sc->lmc_intrmask = 0;
      /* Should be using the default interrupt mask defined in the .h file. */
      sc->lmc_intrmask |= (TULIP_STS_NORMALINTR
                           | TULIP_STS_RXINTR
                           | TULIP_STS_TXINTR
                           | TULIP_STS_ABNRMLINTR
                           | TULIP_STS_SYSERROR
                           | TULIP_STS_TXSTOPPED
                           | TULIP_STS_TXUNDERFLOW
                           | TULIP_STS_RXSTOPPED
  		         | TULIP_STS_RXNOBUF
                          );
      LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask);
  
      sc->lmc_cmdmode |= TULIP_CMD_TXRUN;
      sc->lmc_cmdmode |= TULIP_CMD_RXRUN;
      LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode);
  
      sc->lmc_ok = 1; /* Run watchdog */
  
      /*
       * Set the if up now - pfb
       */
  
      sc->last_link_status = 1;
  
      /*
       * Setup a timer for the watchdog on probe, and start it running.
       * Since lmc_ok == 0, it will be a NOP for now.
       */
      init_timer (&sc->timer);
      sc->timer.expires = jiffies + HZ;
      sc->timer.data = (unsigned long) dev;
      sc->timer.function = lmc_watchdog;
      add_timer (&sc->timer);
  
      lmc_trace(dev, "lmc_open out");
  
      return 0;
  }
  
  /* Total reset to compensate for the AdTran DSU doing bad things
   *  under heavy load
   */
  
  static void lmc_running_reset (struct net_device *dev) /*fold00*/
  {
      lmc_softc_t *sc = dev_to_sc(dev);
  
      lmc_trace(dev, "lmc_runnig_reset in");
  
      /* stop interrupts */
      /* Clear the interrupt mask */
      LMC_CSR_WRITE (sc, csr_intr, 0x00000000);
  
      lmc_dec_reset (sc);
      lmc_reset (sc);
      lmc_softreset (sc);
      /* sc->lmc_miireg16 |= LMC_MII16_LED_ALL; */
      sc->lmc_media->set_link_status (sc, 1);
      sc->lmc_media->set_status (sc, NULL);
  
      netif_wake_queue(dev);
  
      sc->lmc_txfull = 0;
      sc->extra_stats.tx_tbusy0++;
  
      sc->lmc_intrmask = TULIP_DEFAULT_INTR_MASK;
      LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask);
  
      sc->lmc_cmdmode |= (TULIP_CMD_TXRUN | TULIP_CMD_RXRUN);
      LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode);
  
      lmc_trace(dev, "lmc_runnin_reset_out");
  }
  
  
  /* This is what is called when you ifconfig down a device.
   * This disables the timer for the watchdog and keepalives,
   * and disables the irq for dev.
   */
  static int lmc_close(struct net_device *dev)
  {
      /* not calling release_region() as we should */
      lmc_softc_t *sc = dev_to_sc(dev);
  
      lmc_trace(dev, "lmc_close in");
  
      sc->lmc_ok = 0;
      sc->lmc_media->set_link_status (sc, 0);
      del_timer (&sc->timer);
      lmc_proto_close(sc);
      lmc_ifdown (dev);
  
      lmc_trace(dev, "lmc_close out");
  
      return 0;
  }
  
  /* Ends the transfer of packets */
  /* When the interface goes down, this is called */
  static int lmc_ifdown (struct net_device *dev) /*fold00*/
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      u32 csr6;
      int i;
  
      lmc_trace(dev, "lmc_ifdown in");
  
      /* Don't let anything else go on right now */
      //    dev->start = 0;
      netif_stop_queue(dev);
      sc->extra_stats.tx_tbusy1++;
  
      /* stop interrupts */
      /* Clear the interrupt mask */
      LMC_CSR_WRITE (sc, csr_intr, 0x00000000);
  
      /* Stop Tx and Rx on the chip */
      csr6 = LMC_CSR_READ (sc, csr_command);
      csr6 &= ~LMC_DEC_ST;		/* Turn off the Transmission bit */
      csr6 &= ~LMC_DEC_SR;		/* Turn off the Receive bit */
      LMC_CSR_WRITE (sc, csr_command, csr6);
  
      sc->lmc_device->stats.rx_missed_errors +=
  	    LMC_CSR_READ(sc, csr_missed_frames) & 0xffff;
  
      /* release the interrupt */
      if(sc->got_irq == 1){
          free_irq (dev->irq, dev);
          sc->got_irq = 0;
      }
  
      /* free skbuffs in the Rx queue */
      for (i = 0; i < LMC_RXDESCS; i++)
      {
          struct sk_buff *skb = sc->lmc_rxq[i];
          sc->lmc_rxq[i] = NULL;
          sc->lmc_rxring[i].status = 0;
          sc->lmc_rxring[i].length = 0;
          sc->lmc_rxring[i].buffer1 = 0xDEADBEEF;
          if (skb != NULL)
              dev_kfree_skb(skb);
          sc->lmc_rxq[i] = NULL;
      }
  
      for (i = 0; i < LMC_TXDESCS; i++)
      {
          if (sc->lmc_txq[i] != NULL)
              dev_kfree_skb(sc->lmc_txq[i]);
          sc->lmc_txq[i] = NULL;
      }
  
      lmc_led_off (sc, LMC_MII16_LED_ALL);
  
      netif_wake_queue(dev);
      sc->extra_stats.tx_tbusy0++;
  
      lmc_trace(dev, "lmc_ifdown out");
  
      return 0;
  }
  
  /* Interrupt handling routine.  This will take an incoming packet, or clean
   * up after a trasmit.
   */
  static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/
  {
      struct net_device *dev = (struct net_device *) dev_instance;
      lmc_softc_t *sc = dev_to_sc(dev);
      u32 csr;
      int i;
      s32 stat;
      unsigned int badtx;
      u32 firstcsr;
      int max_work = LMC_RXDESCS;
      int handled = 0;
  
      lmc_trace(dev, "lmc_interrupt in");
  
      spin_lock(&sc->lmc_lock);
  
      /*
       * Read the csr to find what interrupts we have (if any)
       */
      csr = LMC_CSR_READ (sc, csr_status);
  
      /*
       * Make sure this is our interrupt
       */
      if ( ! (csr & sc->lmc_intrmask)) {
          goto lmc_int_fail_out;
      }
  
      firstcsr = csr;
  
      /* always go through this loop at least once */
      while (csr & sc->lmc_intrmask) {
  	handled = 1;
  
          /*
           * Clear interrupt bits, we handle all case below
           */
          LMC_CSR_WRITE (sc, csr_status, csr);
  
          /*
           * One of
           *  - Transmit process timed out CSR5<1>
           *  - Transmit jabber timeout    CSR5<3>
           *  - Transmit underflow         CSR5<5>
           *  - Transmit Receiver buffer unavailable CSR5<7>
           *  - Receive process stopped    CSR5<8>
           *  - Receive watchdog timeout   CSR5<9>
           *  - Early transmit interrupt   CSR5<10>
           *
           * Is this really right? Should we do a running reset for jabber?
           * (being a WAN card and all)
           */
          if (csr & TULIP_STS_ABNRMLINTR){
              lmc_running_reset (dev);
              break;
          }
          
          if (csr & TULIP_STS_RXINTR){
              lmc_trace(dev, "rx interrupt");
              lmc_rx (dev);
              
          }
          if (csr & (TULIP_STS_TXINTR | TULIP_STS_TXNOBUF | TULIP_STS_TXSTOPPED)) {
  
  	    int		n_compl = 0 ;
              /* reset the transmit timeout detection flag -baz */
  	    sc->extra_stats.tx_NoCompleteCnt = 0;
  
              badtx = sc->lmc_taint_tx;
              i = badtx % LMC_TXDESCS;
  
              while ((badtx < sc->lmc_next_tx)) {
                  stat = sc->lmc_txring[i].status;
  
                  LMC_EVENT_LOG (LMC_EVENT_XMTINT, stat,
  						 sc->lmc_txring[i].length);
                  /*
                   * If bit 31 is 1 the tulip owns it break out of the loop
                   */
                  if (stat & 0x80000000)
                      break;
  
  		n_compl++ ;		/* i.e., have an empty slot in ring */
                  /*
                   * If we have no skbuff or have cleared it
                   * Already continue to the next buffer
                   */
                  if (sc->lmc_txq[i] == NULL)
                      continue;
  
  		/*
  		 * Check the total error summary to look for any errors
  		 */
  		if (stat & 0x8000) {
  			sc->lmc_device->stats.tx_errors++;
  			if (stat & 0x4104)
  				sc->lmc_device->stats.tx_aborted_errors++;
  			if (stat & 0x0C00)
  				sc->lmc_device->stats.tx_carrier_errors++;
  			if (stat & 0x0200)
  				sc->lmc_device->stats.tx_window_errors++;
  			if (stat & 0x0002)
  				sc->lmc_device->stats.tx_fifo_errors++;
  		} else {
  			sc->lmc_device->stats.tx_bytes += sc->lmc_txring[i].length & 0x7ff;
  
  			sc->lmc_device->stats.tx_packets++;
                  }
  
                  //                dev_kfree_skb(sc->lmc_txq[i]);
                  dev_kfree_skb_irq(sc->lmc_txq[i]);
                  sc->lmc_txq[i] = NULL;
  
                  badtx++;
                  i = badtx % LMC_TXDESCS;
              }
  
              if (sc->lmc_next_tx - badtx > LMC_TXDESCS)
              {
                  printk ("%s: out of sync pointer\n", dev->name);
                  badtx += LMC_TXDESCS;
              }
              LMC_EVENT_LOG(LMC_EVENT_TBUSY0, n_compl, 0);
              sc->lmc_txfull = 0;
              netif_wake_queue(dev);
  	    sc->extra_stats.tx_tbusy0++;
  
  
  #ifdef DEBUG
  	    sc->extra_stats.dirtyTx = badtx;
  	    sc->extra_stats.lmc_next_tx = sc->lmc_next_tx;
  	    sc->extra_stats.lmc_txfull = sc->lmc_txfull;
  #endif
              sc->lmc_taint_tx = badtx;
  
              /*
               * Why was there a break here???
               */
          }			/* end handle transmit interrupt */
  
          if (csr & TULIP_STS_SYSERROR) {
              u32 error;
              printk (KERN_WARNING "%s: system bus error csr: %#8.8x\n", dev->name, csr);
              error = csr>>23 & 0x7;
              switch(error){
              case 0x000:
                  printk(KERN_WARNING "%s: Parity Fault (bad)\n", dev->name);
                  break;
              case 0x001:
                  printk(KERN_WARNING "%s: Master Abort (naughty)\n", dev->name);
                  break;
              case 0x010:
                  printk(KERN_WARNING "%s: Target Abort (not so naughty)\n", dev->name);
                  break;
              default:
                  printk(KERN_WARNING "%s: This bus error code was supposed to be reserved!\n", dev->name);
              }
              lmc_dec_reset (sc);
              lmc_reset (sc);
              LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
              LMC_EVENT_LOG(LMC_EVENT_RESET2,
                            lmc_mii_readreg (sc, 0, 16),
                            lmc_mii_readreg (sc, 0, 17));
  
          }
  
          
          if(max_work-- <= 0)
              break;
          
          /*
           * Get current csr status to make sure
           * we've cleared all interrupts
           */
          csr = LMC_CSR_READ (sc, csr_status);
      }				/* end interrupt loop */
      LMC_EVENT_LOG(LMC_EVENT_INT, firstcsr, csr);
  
  lmc_int_fail_out:
  
      spin_unlock(&sc->lmc_lock);
  
      lmc_trace(dev, "lmc_interrupt out");
      return IRQ_RETVAL(handled);
  }
  
  static netdev_tx_t lmc_start_xmit(struct sk_buff *skb,
  					struct net_device *dev)
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      u32 flag;
      int entry;
      unsigned long flags;
  
      lmc_trace(dev, "lmc_start_xmit in");
  
      spin_lock_irqsave(&sc->lmc_lock, flags);
  
      /* normal path, tbusy known to be zero */
  
      entry = sc->lmc_next_tx % LMC_TXDESCS;
  
      sc->lmc_txq[entry] = skb;
      sc->lmc_txring[entry].buffer1 = virt_to_bus (skb->data);
  
      LMC_CONSOLE_LOG("xmit", skb->data, skb->len);
  
  #ifndef GCOM
      /* If the queue is less than half full, don't interrupt */
      if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS / 2)
      {
          /* Do not interrupt on completion of this packet */
          flag = 0x60000000;
          netif_wake_queue(dev);
      }
      else if (sc->lmc_next_tx - sc->lmc_taint_tx == LMC_TXDESCS / 2)
      {
          /* This generates an interrupt on completion of this packet */
          flag = 0xe0000000;
          netif_wake_queue(dev);
      }
      else if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS - 1)
      {
          /* Do not interrupt on completion of this packet */
          flag = 0x60000000;
          netif_wake_queue(dev);
      }
      else
      {
          /* This generates an interrupt on completion of this packet */
          flag = 0xe0000000;
          sc->lmc_txfull = 1;
          netif_stop_queue(dev);
      }
  #else
      flag = LMC_TDES_INTERRUPT_ON_COMPLETION;
  
      if (sc->lmc_next_tx - sc->lmc_taint_tx >= LMC_TXDESCS - 1)
      {				/* ring full, go busy */
          sc->lmc_txfull = 1;
  	netif_stop_queue(dev);
  	sc->extra_stats.tx_tbusy1++;
          LMC_EVENT_LOG(LMC_EVENT_TBUSY1, entry, 0);
      }
  #endif
  
  
      if (entry == LMC_TXDESCS - 1)	/* last descriptor in ring */
  	flag |= LMC_TDES_END_OF_RING;	/* flag as such for Tulip */
  
      /* don't pad small packets either */
      flag = sc->lmc_txring[entry].length = (skb->len) | flag |
  						sc->TxDescriptControlInit;
  
      /* set the transmit timeout flag to be checked in
       * the watchdog timer handler. -baz
       */
  
      sc->extra_stats.tx_NoCompleteCnt++;
      sc->lmc_next_tx++;
  
      /* give ownership to the chip */
      LMC_EVENT_LOG(LMC_EVENT_XMT, flag, entry);
      sc->lmc_txring[entry].status = 0x80000000;
  
      /* send now! */
      LMC_CSR_WRITE (sc, csr_txpoll, 0);
  
      spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
      lmc_trace(dev, "lmc_start_xmit_out");
      return NETDEV_TX_OK;
  }
  
  
  static int lmc_rx(struct net_device *dev)
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      int i;
      int rx_work_limit = LMC_RXDESCS;
      unsigned int next_rx;
      int rxIntLoopCnt;		/* debug -baz */
      int localLengthErrCnt = 0;
      long stat;
      struct sk_buff *skb, *nsb;
      u16 len;
  
      lmc_trace(dev, "lmc_rx in");
  
      lmc_led_on(sc, LMC_DS3_LED3);
  
      rxIntLoopCnt = 0;		/* debug -baz */
  
      i = sc->lmc_next_rx % LMC_RXDESCS;
      next_rx = sc->lmc_next_rx;
  
      while (((stat = sc->lmc_rxring[i].status) & LMC_RDES_OWN_BIT) != DESC_OWNED_BY_DC21X4)
      {
          rxIntLoopCnt++;		/* debug -baz */
          len = ((stat & LMC_RDES_FRAME_LENGTH) >> RDES_FRAME_LENGTH_BIT_NUMBER);
          if ((stat & 0x0300) != 0x0300) {  /* Check first segment and last segment */
  		if ((stat & 0x0000ffff) != 0x7fff) {
  			/* Oversized frame */
  			sc->lmc_device->stats.rx_length_errors++;
  			goto skip_packet;
  		}
  	}
  
  	if (stat & 0x00000008) { /* Catch a dribbling bit error */
  		sc->lmc_device->stats.rx_errors++;
  		sc->lmc_device->stats.rx_frame_errors++;
  		goto skip_packet;
  	}
  
  
  	if (stat & 0x00000004) { /* Catch a CRC error by the Xilinx */
  		sc->lmc_device->stats.rx_errors++;
  		sc->lmc_device->stats.rx_crc_errors++;
  		goto skip_packet;
  	}
  
  	if (len > LMC_PKT_BUF_SZ) {
  		sc->lmc_device->stats.rx_length_errors++;
  		localLengthErrCnt++;
  		goto skip_packet;
  	}
  
  	if (len < sc->lmc_crcSize + 2) {
  		sc->lmc_device->stats.rx_length_errors++;
  		sc->extra_stats.rx_SmallPktCnt++;
  		localLengthErrCnt++;
  		goto skip_packet;
  	}
  
          if(stat & 0x00004000){
              printk(KERN_WARNING "%s: Receiver descriptor error, receiver out of sync?\n", dev->name);
          }
  
          len -= sc->lmc_crcSize;
  
          skb = sc->lmc_rxq[i];
  
          /*
           * We ran out of memory at some point
           * just allocate an skb buff and continue.
           */
          
          if (!skb) {
              nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
              if (nsb) {
                  sc->lmc_rxq[i] = nsb;
                  nsb->dev = dev;
                  sc->lmc_rxring[i].buffer1 = virt_to_bus(skb_tail_pointer(nsb));
              }
              sc->failed_recv_alloc = 1;
              goto skip_packet;
          }
          
  	sc->lmc_device->stats.rx_packets++;
  	sc->lmc_device->stats.rx_bytes += len;
  
          LMC_CONSOLE_LOG("recv", skb->data, len);
  
          /*
           * I'm not sure of the sanity of this
           * Packets could be arriving at a constant
           * 44.210mbits/sec and we're going to copy
           * them into a new buffer??
           */
          
          if(len > (LMC_MTU - (LMC_MTU>>2))){ /* len > LMC_MTU * 0.75 */
              /*
               * If it's a large packet don't copy it just hand it up
               */
          give_it_anyways:
  
              sc->lmc_rxq[i] = NULL;
              sc->lmc_rxring[i].buffer1 = 0x0;
  
              skb_put (skb, len);
              skb->protocol = lmc_proto_type(sc, skb);
              skb_reset_mac_header(skb);
              /* skb_reset_network_header(skb); */
              skb->dev = dev;
              lmc_proto_netif(sc, skb);
  
              /*
               * This skb will be destroyed by the upper layers, make a new one
               */
              nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
              if (nsb) {
                  sc->lmc_rxq[i] = nsb;
                  nsb->dev = dev;
                  sc->lmc_rxring[i].buffer1 = virt_to_bus(skb_tail_pointer(nsb));
                  /* Transferred to 21140 below */
              }
              else {
                  /*
                   * We've run out of memory, stop trying to allocate
                   * memory and exit the interrupt handler
                   *
                   * The chip may run out of receivers and stop
                   * in which care we'll try to allocate the buffer
                   * again.  (once a second)
                   */
  		sc->extra_stats.rx_BuffAllocErr++;
                  LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len);
                  sc->failed_recv_alloc = 1;
                  goto skip_out_of_mem;
              }
          }
          else {
              nsb = dev_alloc_skb(len);
              if(!nsb) {
                  goto give_it_anyways;
              }
              skb_copy_from_linear_data(skb, skb_put(nsb, len), len);
              
              nsb->protocol = lmc_proto_type(sc, nsb);
              skb_reset_mac_header(nsb);
              /* skb_reset_network_header(nsb); */
              nsb->dev = dev;
              lmc_proto_netif(sc, nsb);
          }
  
      skip_packet:
          LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len);
          sc->lmc_rxring[i].status = DESC_OWNED_BY_DC21X4;
  
          sc->lmc_next_rx++;
          i = sc->lmc_next_rx % LMC_RXDESCS;
          rx_work_limit--;
          if (rx_work_limit < 0)
              break;
      }
  
      /* detect condition for LMC1000 where DSU cable attaches and fills
       * descriptors with bogus packets
       *
      if (localLengthErrCnt > LMC_RXDESCS - 3) {
  	sc->extra_stats.rx_BadPktSurgeCnt++;
  	LMC_EVENT_LOG(LMC_EVENT_BADPKTSURGE, localLengthErrCnt,
  		      sc->extra_stats.rx_BadPktSurgeCnt);
      } */
  
      /* save max count of receive descriptors serviced */
      if (rxIntLoopCnt > sc->extra_stats.rxIntLoopCnt)
  	    sc->extra_stats.rxIntLoopCnt = rxIntLoopCnt; /* debug -baz */
  
  #ifdef DEBUG
      if (rxIntLoopCnt == 0)
      {
          for (i = 0; i < LMC_RXDESCS; i++)
          {
              if ((sc->lmc_rxring[i].status & LMC_RDES_OWN_BIT)
                  != DESC_OWNED_BY_DC21X4)
              {
                  rxIntLoopCnt++;
              }
          }
          LMC_EVENT_LOG(LMC_EVENT_RCVEND, rxIntLoopCnt, 0);
      }
  #endif
  
  
      lmc_led_off(sc, LMC_DS3_LED3);
  
  skip_out_of_mem:
  
      lmc_trace(dev, "lmc_rx out");
  
      return 0;
  }
  
  static struct net_device_stats *lmc_get_stats(struct net_device *dev)
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      unsigned long flags;
  
      lmc_trace(dev, "lmc_get_stats in");
  
      spin_lock_irqsave(&sc->lmc_lock, flags);
  
      sc->lmc_device->stats.rx_missed_errors += LMC_CSR_READ(sc, csr_missed_frames) & 0xffff;
  
      spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
      lmc_trace(dev, "lmc_get_stats out");
  
      return &sc->lmc_device->stats;
  }
  
  static struct pci_driver lmc_driver = {
  	.name		= "lmc",
  	.id_table	= lmc_pci_tbl,
  	.probe		= lmc_init_one,
  	.remove		= __devexit_p(lmc_remove_one),
  };
  
  static int __init init_lmc(void)
  {
      return pci_register_driver(&lmc_driver);
  }
  
  static void __exit exit_lmc(void)
  {
      pci_unregister_driver(&lmc_driver);
  }
  
  module_init(init_lmc);
  module_exit(exit_lmc);
  
  unsigned lmc_mii_readreg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno) /*fold00*/
  {
      int i;
      int command = (0xf6 << 10) | (devaddr << 5) | regno;
      int retval = 0;
  
      lmc_trace(sc->lmc_device, "lmc_mii_readreg in");
  
      LMC_MII_SYNC (sc);
  
      lmc_trace(sc->lmc_device, "lmc_mii_readreg: done sync");
  
      for (i = 15; i >= 0; i--)
      {
          int dataval = (command & (1 << i)) ? 0x20000 : 0;
  
          LMC_CSR_WRITE (sc, csr_9, dataval);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
          LMC_CSR_WRITE (sc, csr_9, dataval | 0x10000);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
      }
  
      lmc_trace(sc->lmc_device, "lmc_mii_readreg: done1");
  
      for (i = 19; i > 0; i--)
      {
          LMC_CSR_WRITE (sc, csr_9, 0x40000);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
          retval = (retval << 1) | ((LMC_CSR_READ (sc, csr_9) & 0x80000) ? 1 : 0);
          LMC_CSR_WRITE (sc, csr_9, 0x40000 | 0x10000);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
      }
  
      lmc_trace(sc->lmc_device, "lmc_mii_readreg out");
  
      return (retval >> 1) & 0xffff;
  }
  
  void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno, unsigned data) /*fold00*/
  {
      int i = 32;
      int command = (0x5002 << 16) | (devaddr << 23) | (regno << 18) | data;
  
      lmc_trace(sc->lmc_device, "lmc_mii_writereg in");
  
      LMC_MII_SYNC (sc);
  
      i = 31;
      while (i >= 0)
      {
          int datav;
  
          if (command & (1 << i))
              datav = 0x20000;
          else
              datav = 0x00000;
  
          LMC_CSR_WRITE (sc, csr_9, datav);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
          LMC_CSR_WRITE (sc, csr_9, (datav | 0x10000));
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
          i--;
      }
  
      i = 2;
      while (i > 0)
      {
          LMC_CSR_WRITE (sc, csr_9, 0x40000);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
          LMC_CSR_WRITE (sc, csr_9, 0x50000);
          lmc_delay ();
          /* __SLOW_DOWN_IO; */
          i--;
      }
  
      lmc_trace(sc->lmc_device, "lmc_mii_writereg out");
  }
  
  static void lmc_softreset (lmc_softc_t * const sc) /*fold00*/
  {
      int i;
  
      lmc_trace(sc->lmc_device, "lmc_softreset in");
  
      /* Initialize the receive rings and buffers. */
      sc->lmc_txfull = 0;
      sc->lmc_next_rx = 0;
      sc->lmc_next_tx = 0;
      sc->lmc_taint_rx = 0;
      sc->lmc_taint_tx = 0;
  
      /*
       * Setup each one of the receiver buffers
       * allocate an skbuff for each one, setup the descriptor table
       * and point each buffer at the next one
       */
  
      for (i = 0; i < LMC_RXDESCS; i++)
      {
          struct sk_buff *skb;
  
          if (sc->lmc_rxq[i] == NULL)
          {
              skb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
              if(skb == NULL){
                  printk(KERN_WARNING "%s: Failed to allocate receiver ring, will try again\n", sc->name);
                  sc->failed_ring = 1;
                  break;
              }
              else{
                  sc->lmc_rxq[i] = skb;
              }
          }
          else
          {
              skb = sc->lmc_rxq[i];
          }
  
          skb->dev = sc->lmc_device;
  
          /* owned by 21140 */
          sc->lmc_rxring[i].status = 0x80000000;
  
          /* used to be PKT_BUF_SZ now uses skb since we lose some to head room */
          sc->lmc_rxring[i].length = skb_tailroom(skb);
  
          /* use to be tail which is dumb since you're thinking why write
           * to the end of the packj,et but since there's nothing there tail == data
           */
          sc->lmc_rxring[i].buffer1 = virt_to_bus (skb->data);
  
          /* This is fair since the structure is static and we have the next address */
          sc->lmc_rxring[i].buffer2 = virt_to_bus (&sc->lmc_rxring[i + 1]);
  
      }
  
      /*
       * Sets end of ring
       */
      if (i != 0) {
          sc->lmc_rxring[i - 1].length |= 0x02000000; /* Set end of buffers flag */
          sc->lmc_rxring[i - 1].buffer2 = virt_to_bus(&sc->lmc_rxring[0]); /* Point back to the start */
      }
      LMC_CSR_WRITE (sc, csr_rxlist, virt_to_bus (sc->lmc_rxring)); /* write base address */
  
      /* Initialize the transmit rings and buffers */
      for (i = 0; i < LMC_TXDESCS; i++)
      {
          if (sc->lmc_txq[i] != NULL){		/* have buffer */
              dev_kfree_skb(sc->lmc_txq[i]);	/* free it */
  	    sc->lmc_device->stats.tx_dropped++;	/* We just dropped a packet */
          }
          sc->lmc_txq[i] = NULL;
          sc->lmc_txring[i].status = 0x00000000;
          sc->lmc_txring[i].buffer2 = virt_to_bus (&sc->lmc_txring[i + 1]);
      }
      sc->lmc_txring[i - 1].buffer2 = virt_to_bus (&sc->lmc_txring[0]);
      LMC_CSR_WRITE (sc, csr_txlist, virt_to_bus (sc->lmc_txring));
  
      lmc_trace(sc->lmc_device, "lmc_softreset out");
  }
  
  void lmc_gpio_mkinput(lmc_softc_t * const sc, u32 bits) /*fold00*/
  {
      lmc_trace(sc->lmc_device, "lmc_gpio_mkinput in");
      sc->lmc_gpio_io &= ~bits;
      LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
      lmc_trace(sc->lmc_device, "lmc_gpio_mkinput out");
  }
  
  void lmc_gpio_mkoutput(lmc_softc_t * const sc, u32 bits) /*fold00*/
  {
      lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput in");
      sc->lmc_gpio_io |= bits;
      LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
      lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput out");
  }
  
  void lmc_led_on(lmc_softc_t * const sc, u32 led) /*fold00*/
  {
      lmc_trace(sc->lmc_device, "lmc_led_on in");
      if((~sc->lmc_miireg16) & led){ /* Already on! */
          lmc_trace(sc->lmc_device, "lmc_led_on aon out");
          return;
      }
      
      sc->lmc_miireg16 &= ~led;
      lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
      lmc_trace(sc->lmc_device, "lmc_led_on out");
  }
  
  void lmc_led_off(lmc_softc_t * const sc, u32 led) /*fold00*/
  {
      lmc_trace(sc->lmc_device, "lmc_led_off in");
      if(sc->lmc_miireg16 & led){ /* Already set don't do anything */
          lmc_trace(sc->lmc_device, "lmc_led_off aoff out");
          return;
      }
      
      sc->lmc_miireg16 |= led;
      lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
      lmc_trace(sc->lmc_device, "lmc_led_off out");
  }
  
  static void lmc_reset(lmc_softc_t * const sc) /*fold00*/
  {
      lmc_trace(sc->lmc_device, "lmc_reset in");
      sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET;
      lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
  
      sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET;
      lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
  
      /*
       * make some of the GPIO pins be outputs
       */
      lmc_gpio_mkoutput(sc, LMC_GEP_RESET);
  
      /*
       * RESET low to force state reset.  This also forces
       * the transmitter clock to be internal, but we expect to reset
       * that later anyway.
       */
      sc->lmc_gpio &= ~(LMC_GEP_RESET);
      LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
  
      /*
       * hold for more than 10 microseconds
       */
      udelay(50);
  
      /*
       * stop driving Xilinx-related signals
       */
      lmc_gpio_mkinput(sc, LMC_GEP_RESET);
  
      /*
       * Call media specific init routine
       */
      sc->lmc_media->init(sc);
  
      sc->extra_stats.resetCount++;
      lmc_trace(sc->lmc_device, "lmc_reset out");
  }
  
  static void lmc_dec_reset(lmc_softc_t * const sc) /*fold00*/
  {
      u32 val;
      lmc_trace(sc->lmc_device, "lmc_dec_reset in");
  
      /*
       * disable all interrupts
       */
      sc->lmc_intrmask = 0;
      LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask);
  
      /*
       * Reset the chip with a software reset command.
       * Wait 10 microseconds (actually 50 PCI cycles but at
       * 33MHz that comes to two microseconds but wait a
       * bit longer anyways)
       */
      LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
      udelay(25);
  #ifdef __sparc__
      sc->lmc_busmode = LMC_CSR_READ(sc, csr_busmode);
      sc->lmc_busmode = 0x00100000;
      sc->lmc_busmode &= ~TULIP_BUSMODE_SWRESET;
      LMC_CSR_WRITE(sc, csr_busmode, sc->lmc_busmode);
  #endif
      sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command);
  
      /*
       * We want:
       *   no ethernet address in frames we write
       *   disable padding (txdesc, padding disable)
       *   ignore runt frames (rdes0 bit 15)
       *   no receiver watchdog or transmitter jabber timer
       *       (csr15 bit 0,14 == 1)
       *   if using 16-bit CRC, turn off CRC (trans desc, crc disable)
       */
  
      sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS
                           | TULIP_CMD_FULLDUPLEX
                           | TULIP_CMD_PASSBADPKT
                           | TULIP_CMD_NOHEARTBEAT
                           | TULIP_CMD_PORTSELECT
                           | TULIP_CMD_RECEIVEALL
                           | TULIP_CMD_MUSTBEONE
                         );
      sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE
                            | TULIP_CMD_THRESHOLDCTL
                            | TULIP_CMD_STOREFWD
                            | TULIP_CMD_TXTHRSHLDCTL
                          );
  
      LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
  
      /*
       * disable receiver watchdog and transmit jabber
       */
      val = LMC_CSR_READ(sc, csr_sia_general);
      val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE);
      LMC_CSR_WRITE(sc, csr_sia_general, val);
  
      lmc_trace(sc->lmc_device, "lmc_dec_reset out");
  }
  
  static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, /*fold00*/
                           size_t csr_size)
  {
      lmc_trace(sc->lmc_device, "lmc_initcsrs in");
      sc->lmc_csrs.csr_busmode	        = csr_base +  0 * csr_size;
      sc->lmc_csrs.csr_txpoll		= csr_base +  1 * csr_size;
      sc->lmc_csrs.csr_rxpoll		= csr_base +  2 * csr_size;
      sc->lmc_csrs.csr_rxlist		= csr_base +  3 * csr_size;
      sc->lmc_csrs.csr_txlist		= csr_base +  4 * csr_size;
      sc->lmc_csrs.csr_status		= csr_base +  5 * csr_size;
      sc->lmc_csrs.csr_command	        = csr_base +  6 * csr_size;
      sc->lmc_csrs.csr_intr		= csr_base +  7 * csr_size;
      sc->lmc_csrs.csr_missed_frames	= csr_base +  8 * csr_size;
      sc->lmc_csrs.csr_9		        = csr_base +  9 * csr_size;
      sc->lmc_csrs.csr_10		        = csr_base + 10 * csr_size;
      sc->lmc_csrs.csr_11		        = csr_base + 11 * csr_size;
      sc->lmc_csrs.csr_12		        = csr_base + 12 * csr_size;
      sc->lmc_csrs.csr_13		        = csr_base + 13 * csr_size;
      sc->lmc_csrs.csr_14		        = csr_base + 14 * csr_size;
      sc->lmc_csrs.csr_15		        = csr_base + 15 * csr_size;
      lmc_trace(sc->lmc_device, "lmc_initcsrs out");
  }
  
  static void lmc_driver_timeout(struct net_device *dev)
  {
      lmc_softc_t *sc = dev_to_sc(dev);
      u32 csr6;
      unsigned long flags;
  
      lmc_trace(dev, "lmc_driver_timeout in");
  
      spin_lock_irqsave(&sc->lmc_lock, flags);
  
      printk("%s: Xmitter busy|\n", dev->name);
  
      sc->extra_stats.tx_tbusy_calls++;
      if (jiffies - dev_trans_start(dev) < TX_TIMEOUT)
  	    goto bug_out;
  
      /*
       * Chip seems to have locked up
       * Reset it
       * This whips out all our decriptor
       * table and starts from scartch
       */
  
      LMC_EVENT_LOG(LMC_EVENT_XMTPRCTMO,
                    LMC_CSR_READ (sc, csr_status),
  		  sc->extra_stats.tx_ProcTimeout);
  
      lmc_running_reset (dev);
  
      LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
      LMC_EVENT_LOG(LMC_EVENT_RESET2,
                    lmc_mii_readreg (sc, 0, 16),
                    lmc_mii_readreg (sc, 0, 17));
  
      /* restart the tx processes */
      csr6 = LMC_CSR_READ (sc, csr_command);
      LMC_CSR_WRITE (sc, csr_command, csr6 | 0x0002);
      LMC_CSR_WRITE (sc, csr_command, csr6 | 0x2002);
  
      /* immediate transmit */
      LMC_CSR_WRITE (sc, csr_txpoll, 0);
  
      sc->lmc_device->stats.tx_errors++;
      sc->extra_stats.tx_ProcTimeout++; /* -baz */
  
      dev->trans_start = jiffies; /* prevent tx timeout */
  
  bug_out:
  
      spin_unlock_irqrestore(&sc->lmc_lock, flags);
  
      lmc_trace(dev, "lmc_driver_timout out");
  
  
  }
  