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slicoss.c

/**************************************************************************
 *
 * Copyright  2000-2006 Alacritech, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY ALACRITECH, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ALACRITECH, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of Alacritech, Inc.
 *
 **************************************************************************/

/*
 * FILENAME: slicoss.c
 *
 * The SLICOSS driver for Alacritech's IS-NIC products.
 *
 * This driver is supposed to support:
 *
 *      Mojave cards (single port PCI Gigabit) both copper and fiber
 *      Oasis cards (single and dual port PCI-x Gigabit) copper and fiber
 *      Kalahari cards (dual and quad port PCI-e Gigabit) copper and fiber
 *
 * The driver was acutally tested on Oasis and Kalahari cards.
 *
 *
 * NOTE: This is the standard, non-accelerated version of Alacritech's
 *       IS-NIC driver.
 */


#define KLUDGE_FOR_4GB_BOUNDARY         1
#define DEBUG_MICROCODE                 1
#define DBG                             1
#define SLIC_INTERRUPT_PROCESS_LIMIT      1
#define SLIC_OFFLOAD_IP_CHECKSUM          1
#define STATS_TIMER_INTERVAL              2
#define PING_TIMER_INTERVAL                   1

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/moduleparam.h>

#include <linux/firmware.h>
#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
#include <asm/unaligned.h>

#include <linux/ethtool.h>
#include <linux/uaccess.h>
#include "slichw.h"
#include "slic.h"

static struct net_device_stats *slic_get_stats(struct net_device *dev);
static int slic_entry_open(struct net_device *dev);
static int slic_entry_halt(struct net_device *dev);
static int slic_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static int slic_xmit_start(struct sk_buff *skb, struct net_device *dev);
static void slic_xmit_fail(struct adapter *adapter, struct sk_buff *skb,
                     void *cmd, u32 skbtype, u32 status);
static void slic_config_pci(struct pci_dev *pcidev);
static struct sk_buff *slic_rcvqueue_getnext(struct adapter *adapter);
static int slic_mac_set_address(struct net_device *dev, void *ptr);
static void slic_link_event_handler(struct adapter *adapter);
static void slic_upr_request_complete(struct adapter *adapter, u32 isr);
static int slic_rspqueue_init(struct adapter *adapter);
static void slic_rspqueue_free(struct adapter *adapter);
static struct slic_rspbuf *slic_rspqueue_getnext(struct adapter *adapter);
static int slic_cmdq_init(struct adapter *adapter);
static void slic_cmdq_free(struct adapter *adapter);
static void slic_cmdq_reset(struct adapter *adapter);
static void slic_cmdq_addcmdpage(struct adapter *adapter, u32 *page);
static void slic_cmdq_getdone(struct adapter *adapter);
static void slic_cmdq_putdone_irq(struct adapter *adapter,
                          struct slic_hostcmd *cmd);
static struct slic_hostcmd *slic_cmdq_getfree(struct adapter *adapter);
static int slic_rcvqueue_init(struct adapter *adapter);
static int slic_rcvqueue_fill(struct adapter *adapter);
static u32 slic_rcvqueue_reinsert(struct adapter *adapter, struct sk_buff *skb);
static void slic_rcvqueue_free(struct adapter *adapter);
static void slic_adapter_set_hwaddr(struct adapter *adapter);
static int slic_card_init(struct sliccard *card, struct adapter *adapter);
static void slic_intagg_set(struct adapter *adapter, u32 value);
static int slic_card_download(struct adapter *adapter);
static u32 slic_card_locate(struct adapter *adapter);
static int slic_if_init(struct adapter *adapter);
static int slic_adapter_allocresources(struct adapter *adapter);
static void slic_adapter_freeresources(struct adapter *adapter);
static void slic_link_config(struct adapter *adapter, u32 linkspeed,
                       u32 linkduplex);
static void slic_unmap_mmio_space(struct adapter *adapter);
static void slic_card_cleanup(struct sliccard *card);
static void slic_soft_reset(struct adapter *adapter);
static bool slic_mac_filter(struct adapter *adapter,
                      struct ether_header *ether_frame);
static void slic_mac_address_config(struct adapter *adapter);
static void slic_mac_config(struct adapter *adapter);
static void slic_mcast_set_mask(struct adapter *adapter);
static void slic_config_set(struct adapter *adapter, bool linkchange);
static void slic_config_clear(struct adapter *adapter);
static void slic_config_get(struct adapter *adapter, u32 config,
                      u32 configh);
static void slic_timer_load_check(ulong context);
static void slic_assert_fail(void);
static ushort slic_eeprom_cksum(char *m, int len);
static void slic_upr_start(struct adapter *adapter);
static void slic_link_upr_complete(struct adapter *adapter, u32 Isr);
static int  slic_upr_request(struct adapter *adapter, u32 upr_request,
                       u32 upr_data, u32 upr_data_h, u32 upr_buffer,
                       u32 upr_buffer_h);
static void slic_mcast_set_list(struct net_device *dev);


static uint slic_first_init = 1;
static char *slic_banner = "Alacritech SLIC Technology(tm) Server "\
            "and Storage Accelerator (Non-Accelerated)";

static char *slic_proc_version = "2.0.351  2006/07/14 12:26:00";
static char *slic_product_name = "SLIC Technology(tm) Server "\
            "and Storage Accelerator (Non-Accelerated)";
static char *slic_vendor = "Alacritech, Inc.";

static int slic_debug = 1;
static int debug = -1;
static struct net_device *head_netdevice;

static struct base_driver slic_global = { {}, 0, 0, 0, 1, NULL, NULL };
static int intagg_delay = 100;
static u32 dynamic_intagg;
static unsigned int rcv_count;
static struct dentry *slic_debugfs;

#define DRV_NAME          "slicoss"
#define DRV_VERSION       "2.0.1"
#define DRV_AUTHOR        "Alacritech, Inc. Engineering"
#define DRV_DESCRIPTION   "Alacritech SLIC Techonology(tm) "\
            "Non-Accelerated Driver"
#define DRV_COPYRIGHT     "Copyright  2000-2006 Alacritech, Inc. "\
            "All rights reserved."
#define PFX          DRV_NAME " "

MODULE_AUTHOR(DRV_AUTHOR);
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_LICENSE("Dual BSD/GPL");

module_param(dynamic_intagg, int, 0);
MODULE_PARM_DESC(dynamic_intagg, "Dynamic Interrupt Aggregation Setting");
module_param(intagg_delay, int, 0);
MODULE_PARM_DESC(intagg_delay, "uSec Interrupt Aggregation Delay");

static struct pci_device_id slic_pci_tbl[] __devinitdata = {
      {PCI_VENDOR_ID_ALACRITECH,
       SLIC_1GB_DEVICE_ID,
       PCI_ANY_ID, PCI_ANY_ID,},
      {PCI_VENDOR_ID_ALACRITECH,
       SLIC_2GB_DEVICE_ID,
       PCI_ANY_ID, PCI_ANY_ID,},
      {0,}
};

MODULE_DEVICE_TABLE(pci, slic_pci_tbl);

#ifdef ASSERT
#undef ASSERT
#endif

#ifndef ASSERT
#define ASSERT(a) do {                                      \
      if (!(a)) {                                     \
            printk(KERN_ERR "slicoss ASSERT() Failure: function %s"     \
                  "line %d\n", __func__, __LINE__);         \
            slic_assert_fail();                             \
      }                                               \
} while (0)
#endif


#define SLIC_GET_SLIC_HANDLE(_adapter, _pslic_handle)                   \
{                                                                       \
    spin_lock_irqsave(&_adapter->handle_lock.lock,                      \
                  _adapter->handle_lock.flags);                   \
    _pslic_handle  =  _adapter->pfree_slic_handles;                     \
    if (_pslic_handle) {                                                \
      ASSERT(_pslic_handle->type == SLIC_HANDLE_FREE);                \
      _adapter->pfree_slic_handles = _pslic_handle->next;             \
    }                                                                   \
    spin_unlock_irqrestore(&_adapter->handle_lock.lock,                 \
                  _adapter->handle_lock.flags);                   \
}

#define SLIC_FREE_SLIC_HANDLE(_adapter, _pslic_handle)                  \
{                                                                       \
    _pslic_handle->type = SLIC_HANDLE_FREE;                             \
    spin_lock_irqsave(&_adapter->handle_lock.lock,                      \
                  _adapter->handle_lock.flags);                   \
    _pslic_handle->next = _adapter->pfree_slic_handles;                 \
    _adapter->pfree_slic_handles = _pslic_handle;                       \
    spin_unlock_irqrestore(&_adapter->handle_lock.lock,                 \
                  _adapter->handle_lock.flags);                   \
}

static void slic_debug_init(void);
static void slic_debug_cleanup(void);
static void slic_debug_adapter_create(struct adapter *adapter);
static void slic_debug_adapter_destroy(struct adapter *adapter);
static void slic_debug_card_create(struct sliccard *card);
static void slic_debug_card_destroy(struct sliccard *card);

static inline void slic_reg32_write(void __iomem *reg, u32 value, bool flush)
{
      writel(value, reg);
      if (flush)
            mb();
}

static inline void slic_reg64_write(struct adapter *adapter, void __iomem *reg,
                            u32 value, void __iomem *regh, u32 paddrh,
                            bool flush)
{
      spin_lock_irqsave(&adapter->bit64reglock.lock,
                        adapter->bit64reglock.flags);
      if (paddrh != adapter->curaddrupper) {
            adapter->curaddrupper = paddrh;
            writel(paddrh, regh);
      }
      writel(value, reg);
      if (flush)
            mb();
      spin_unlock_irqrestore(&adapter->bit64reglock.lock,
                        adapter->bit64reglock.flags);
}

static void slic_init_driver(void)
{
      if (slic_first_init) {
            slic_first_init = 0;
            spin_lock_init(&slic_global.driver_lock.lock);
            slic_debug_init();
      }
}

static void slic_init_adapter(struct net_device *netdev,
                        struct pci_dev *pcidev,
                        const struct pci_device_id *pci_tbl_entry,
                        void __iomem *memaddr, int chip_idx)
{
      ushort index;
      struct slic_handle *pslic_handle;
      struct adapter *adapter = (struct adapter *)netdev_priv(netdev);

/*    adapter->pcidev = pcidev;*/
      adapter->vendid = pci_tbl_entry->vendor;
      adapter->devid = pci_tbl_entry->device;
      adapter->subsysid = pci_tbl_entry->subdevice;
      adapter->busnumber = pcidev->bus->number;
      adapter->slotnumber = ((pcidev->devfn >> 3) & 0x1F);
      adapter->functionnumber = (pcidev->devfn & 0x7);
      adapter->memorylength = pci_resource_len(pcidev, 0);
      adapter->slic_regs = (__iomem struct slic_regs *)memaddr;
      adapter->irq = pcidev->irq;
/*    adapter->netdev = netdev;*/
      adapter->next_netdevice = head_netdevice;
      head_netdevice = netdev;
      adapter->chipid = chip_idx;
      adapter->port = 0;      /*adapter->functionnumber;*/
      adapter->cardindex = adapter->port;
      adapter->memorybase = memaddr;
      spin_lock_init(&adapter->upr_lock.lock);
      spin_lock_init(&adapter->bit64reglock.lock);
      spin_lock_init(&adapter->adapter_lock.lock);
      spin_lock_init(&adapter->reset_lock.lock);
      spin_lock_init(&adapter->handle_lock.lock);

      adapter->card_size = 1;
      /*
        Initialize slic_handle array
      */
      ASSERT(SLIC_CMDQ_MAXCMDS <= 0xFFFF);
      /*
       Start with 1.  0 is an invalid host handle.
      */
      for (index = 1, pslic_handle = &adapter->slic_handles[1];
           index < SLIC_CMDQ_MAXCMDS; index++, pslic_handle++) {

            pslic_handle->token.handle_index = index;
            pslic_handle->type = SLIC_HANDLE_FREE;
            pslic_handle->next = adapter->pfree_slic_handles;
            adapter->pfree_slic_handles = pslic_handle;
      }
      adapter->pshmem = (struct slic_shmem *)
                              pci_alloc_consistent(adapter->pcidev,
                              sizeof(struct slic_shmem),
                              &adapter->
                              phys_shmem);
      ASSERT(adapter->pshmem);

      memset(adapter->pshmem, 0, sizeof(struct slic_shmem));

      return;
}

static const struct net_device_ops slic_netdev_ops = {
      .ndo_open         = slic_entry_open,
      .ndo_stop         = slic_entry_halt,
      .ndo_start_xmit         = slic_xmit_start,
      .ndo_do_ioctl           = slic_ioctl,
      .ndo_set_mac_address    = slic_mac_set_address,
      .ndo_get_stats          = slic_get_stats,
      .ndo_set_multicast_list = slic_mcast_set_list,
      .ndo_validate_addr      = eth_validate_addr,
      .ndo_set_mac_address    = eth_mac_addr,
      .ndo_change_mtu         = eth_change_mtu,
};

static int __devinit slic_entry_probe(struct pci_dev *pcidev,
                         const struct pci_device_id *pci_tbl_entry)
{
      static int cards_found;
      static int did_version;
      int err = -ENODEV;
      struct net_device *netdev;
      struct adapter *adapter;
      void __iomem *memmapped_ioaddr = NULL;
      u32 status = 0;
      ulong mmio_start = 0;
      ulong mmio_len = 0;
      struct sliccard *card = NULL;

      slic_global.dynamic_intagg = dynamic_intagg;

      err = pci_enable_device(pcidev);

      if (err)
            return err;

      if (slic_debug > 0 && did_version++ == 0) {
            printk(KERN_DEBUG "%s\n", slic_banner);
            printk(KERN_DEBUG "%s\n", slic_proc_version);
      }

      err = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
      if (err) {
            err = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
            if (err)
                  goto err_out_disable_pci;
      }

      err = pci_request_regions(pcidev, DRV_NAME);
      if (err)
            goto err_out_disable_pci;

      pci_set_master(pcidev);

      netdev = alloc_etherdev(sizeof(struct adapter));
      if (!netdev) {
            err = -ENOMEM;
            goto err_out_exit_slic_probe;
      }

      SET_NETDEV_DEV(netdev, &pcidev->dev);

      pci_set_drvdata(pcidev, netdev);
      adapter = netdev_priv(netdev);
      adapter->netdev = netdev;
      adapter->pcidev = pcidev;

      mmio_start = pci_resource_start(pcidev, 0);
      mmio_len = pci_resource_len(pcidev, 0);


/*    memmapped_ioaddr =  (u32)ioremap_nocache(mmio_start, mmio_len);*/
      memmapped_ioaddr = ioremap(mmio_start, mmio_len);
      if (!memmapped_ioaddr) {
            dev_err(&pcidev->dev, "cannot remap MMIO region %lx @ %lx\n",
                  mmio_len, mmio_start);
            goto err_out_free_netdev;
      }

      slic_config_pci(pcidev);

      slic_init_driver();

      slic_init_adapter(netdev,
                    pcidev, pci_tbl_entry, memmapped_ioaddr, cards_found);

      status = slic_card_locate(adapter);
      if (status) {
            dev_err(&pcidev->dev, "cannot locate card\n");
            goto err_out_free_mmio_region;
      }

      card = adapter->card;

      if (!adapter->allocated) {
            card->adapters_allocated++;
            adapter->allocated = 1;
      }

      status = slic_card_init(card, adapter);

      if (status != STATUS_SUCCESS) {
            card->state = CARD_FAIL;
            adapter->state = ADAPT_FAIL;
            adapter->linkstate = LINK_DOWN;
            dev_err(&pcidev->dev, "FAILED status[%x]\n", status);
      } else {
            slic_adapter_set_hwaddr(adapter);
      }

      netdev->base_addr = (unsigned long)adapter->memorybase;
      netdev->irq = adapter->irq;
      netdev->netdev_ops = &slic_netdev_ops;

      slic_debug_adapter_create(adapter);

      strcpy(netdev->name, "eth%d");
      err = register_netdev(netdev);
      if (err) {
            dev_err(&pcidev->dev, "Cannot register net device, aborting.\n");
            goto err_out_unmap;
      }

      cards_found++;

      return status;

err_out_unmap:
      iounmap(memmapped_ioaddr);
err_out_free_mmio_region:
      release_mem_region(mmio_start, mmio_len);
err_out_free_netdev:
      free_netdev(netdev);
err_out_exit_slic_probe:
      pci_release_regions(pcidev);
err_out_disable_pci:
      pci_disable_device(pcidev);
      return err;
}

static int slic_entry_open(struct net_device *dev)
{
      struct adapter *adapter = (struct adapter *) netdev_priv(dev);
      struct sliccard *card = adapter->card;
      u32 locked = 0;
      int status;

      ASSERT(adapter);
      ASSERT(card);

      netif_stop_queue(adapter->netdev);

      spin_lock_irqsave(&slic_global.driver_lock.lock,
                        slic_global.driver_lock.flags);
      locked = 1;
      if (!adapter->activated) {
            card->adapters_activated++;
            slic_global.num_slic_ports_active++;
            adapter->activated = 1;
      }
      status = slic_if_init(adapter);

      if (status != STATUS_SUCCESS) {
            if (adapter->activated) {
                  card->adapters_activated--;
                  slic_global.num_slic_ports_active--;
                  adapter->activated = 0;
            }
            if (locked) {
                  spin_unlock_irqrestore(&slic_global.driver_lock.lock,
                                    slic_global.driver_lock.flags);
                  locked = 0;
            }
            return status;
      }
      if (!card->master)
            card->master = adapter;

      if (locked) {
            spin_unlock_irqrestore(&slic_global.driver_lock.lock,
                              slic_global.driver_lock.flags);
            locked = 0;
      }

      return STATUS_SUCCESS;
}

static void __devexit slic_entry_remove(struct pci_dev *pcidev)
{
      struct net_device *dev = pci_get_drvdata(pcidev);
      u32 mmio_start = 0;
      uint mmio_len = 0;
      struct adapter *adapter = (struct adapter *) netdev_priv(dev);
      struct sliccard *card;
      struct mcast_address *mcaddr, *mlist;

      ASSERT(adapter);
      slic_adapter_freeresources(adapter);
      slic_unmap_mmio_space(adapter);
      unregister_netdev(dev);

      mmio_start = pci_resource_start(pcidev, 0);
      mmio_len = pci_resource_len(pcidev, 0);

      release_mem_region(mmio_start, mmio_len);

      iounmap((void __iomem *)dev->base_addr);
      /* free multicast addresses */
      mlist = adapter->mcastaddrs;
      while (mlist) {
            mcaddr = mlist;
            mlist = mlist->next;
            kfree(mcaddr);
      }
      ASSERT(adapter->card);
      card = adapter->card;
      ASSERT(card->adapters_allocated);
      card->adapters_allocated--;
      adapter->allocated = 0;
      if (!card->adapters_allocated) {
            struct sliccard *curr_card = slic_global.slic_card;
            if (curr_card == card) {
                  slic_global.slic_card = card->next;
            } else {
                  while (curr_card->next != card)
                        curr_card = curr_card->next;
                  ASSERT(curr_card);
                  curr_card->next = card->next;
            }
            ASSERT(slic_global.num_slic_cards);
            slic_global.num_slic_cards--;
            slic_card_cleanup(card);
      }
      kfree(dev);
      pci_release_regions(pcidev);
}

static int slic_entry_halt(struct net_device *dev)
{
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      struct sliccard *card = adapter->card;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;

      spin_lock_irqsave(&slic_global.driver_lock.lock,
                        slic_global.driver_lock.flags);
      ASSERT(card);
      netif_stop_queue(adapter->netdev);
      adapter->state = ADAPT_DOWN;
      adapter->linkstate = LINK_DOWN;
      adapter->upr_list = NULL;
      adapter->upr_busy = 0;
      adapter->devflags_prev = 0;
      ASSERT(card->adapter[adapter->cardindex] == adapter);
      slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
      adapter->all_reg_writes++;
      adapter->icr_reg_writes++;
      slic_config_clear(adapter);
      if (adapter->activated) {
            card->adapters_activated--;
            slic_global.num_slic_ports_active--;
            adapter->activated = 0;
      }
#ifdef AUTOMATIC_RESET
      slic_reg32_write(&slic_regs->slic_reset_iface, 0, FLUSH);
#endif
      /*
       *  Reset the adapter's cmd queues
       */
      slic_cmdq_reset(adapter);

#ifdef AUTOMATIC_RESET
      if (!card->adapters_activated)
            slic_card_init(card, adapter);
#endif

      spin_unlock_irqrestore(&slic_global.driver_lock.lock,
                        slic_global.driver_lock.flags);
      return STATUS_SUCCESS;
}

static int slic_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      struct ethtool_cmd edata;
      struct ethtool_cmd ecmd;
      u32 data[7];
      u32 intagg;

      ASSERT(rq);
      switch (cmd) {
      case SIOCSLICSETINTAGG:
            if (copy_from_user(data, rq->ifr_data, 28))
                  return -EFAULT;
            intagg = data[0];
            dev_err(&dev->dev, "%s: set interrupt aggregation to %d\n",
                  __func__, intagg);
            slic_intagg_set(adapter, intagg);
            return 0;

#ifdef SLIC_TRACE_DUMP_ENABLED
      case SIOCSLICTRACEDUMP:
            {
                  u32 value;
                  DBG_IOCTL("slic_ioctl  SIOCSLIC_TRACE_DUMP\n");

                  if (copy_from_user(data, rq->ifr_data, 28)) {
                        PRINT_ERROR
                            ("slic: copy_from_user FAILED getting \
                             initial simba param\n");
                        return -EFAULT;
                  }

                  value = data[0];
                  if (tracemon_request == SLIC_DUMP_DONE) {
                        PRINT_ERROR
                            ("ATK Diagnostic Trace Dump Requested\n");
                        tracemon_request = SLIC_DUMP_REQUESTED;
                        tracemon_request_type = value;
                        tracemon_timestamp = jiffies;
                  } else if ((tracemon_request == SLIC_DUMP_REQUESTED) ||
                           (tracemon_request ==
                            SLIC_DUMP_IN_PROGRESS)) {
                        PRINT_ERROR
                            ("ATK Diagnostic Trace Dump Requested but \
                             already in progress... ignore\n");
                  } else {
                        PRINT_ERROR
                            ("ATK Diagnostic Trace Dump Requested\n");
                        tracemon_request = SLIC_DUMP_REQUESTED;
                        tracemon_request_type = value;
                        tracemon_timestamp = jiffies;
                  }
                  return 0;
            }
#endif
      case SIOCETHTOOL:
            ASSERT(adapter);
            if (copy_from_user(&ecmd, rq->ifr_data, sizeof(ecmd)))
                  return -EFAULT;

            if (ecmd.cmd == ETHTOOL_GSET) {
                  edata.supported = (SUPPORTED_10baseT_Half |
                                 SUPPORTED_10baseT_Full |
                                 SUPPORTED_100baseT_Half |
                                 SUPPORTED_100baseT_Full |
                                 SUPPORTED_Autoneg | SUPPORTED_MII);
                  edata.port = PORT_MII;
                  edata.transceiver = XCVR_INTERNAL;
                  edata.phy_address = 0;
                  if (adapter->linkspeed == LINK_100MB)
                        edata.speed = SPEED_100;
                  else if (adapter->linkspeed == LINK_10MB)
                        edata.speed = SPEED_10;
                  else
                        edata.speed = 0;

                  if (adapter->linkduplex == LINK_FULLD)
                        edata.duplex = DUPLEX_FULL;
                  else
                        edata.duplex = DUPLEX_HALF;

                  edata.autoneg = AUTONEG_ENABLE;
                  edata.maxtxpkt = 1;
                  edata.maxrxpkt = 1;
                  if (copy_to_user(rq->ifr_data, &edata, sizeof(edata)))
                        return -EFAULT;

            } else if (ecmd.cmd == ETHTOOL_SSET) {
                  if (!capable(CAP_NET_ADMIN))
                        return -EPERM;

                  if (adapter->linkspeed == LINK_100MB)
                        edata.speed = SPEED_100;
                  else if (adapter->linkspeed == LINK_10MB)
                        edata.speed = SPEED_10;
                  else
                        edata.speed = 0;

                  if (adapter->linkduplex == LINK_FULLD)
                        edata.duplex = DUPLEX_FULL;
                  else
                        edata.duplex = DUPLEX_HALF;

                  edata.autoneg = AUTONEG_ENABLE;
                  edata.maxtxpkt = 1;
                  edata.maxrxpkt = 1;
                  if ((ecmd.speed != edata.speed) ||
                      (ecmd.duplex != edata.duplex)) {
                        u32 speed;
                        u32 duplex;

                        if (ecmd.speed == SPEED_10)
                              speed = 0;
                        else
                              speed = PCR_SPEED_100;
                        if (ecmd.duplex == DUPLEX_FULL)
                              duplex = PCR_DUPLEX_FULL;
                        else
                              duplex = 0;
                        slic_link_config(adapter, speed, duplex);
                        slic_link_event_handler(adapter);
                  }
            }
            return 0;
      default:
            return -EOPNOTSUPP;
      }
}

#define  XMIT_FAIL_LINK_STATE               1
#define  XMIT_FAIL_ZERO_LENGTH              2
#define  XMIT_FAIL_HOSTCMD_FAIL             3

static void slic_xmit_build_request(struct adapter *adapter,
                       struct slic_hostcmd *hcmd, struct sk_buff *skb)
{
      struct slic_host64_cmd *ihcmd;
      ulong phys_addr;

      ihcmd = &hcmd->cmd64;

      ihcmd->flags = (adapter->port << IHFLG_IFSHFT);
      ihcmd->command = IHCMD_XMT_REQ;
      ihcmd->u.slic_buffers.totlen = skb->len;
      phys_addr = pci_map_single(adapter->pcidev, skb->data, skb->len,
                  PCI_DMA_TODEVICE);
      ihcmd->u.slic_buffers.bufs[0].paddrl = SLIC_GET_ADDR_LOW(phys_addr);
      ihcmd->u.slic_buffers.bufs[0].paddrh = SLIC_GET_ADDR_HIGH(phys_addr);
      ihcmd->u.slic_buffers.bufs[0].length = skb->len;
#if defined(CONFIG_X86_64)
      hcmd->cmdsize = (u32) ((((u64)&ihcmd->u.slic_buffers.bufs[1] -
                             (u64) hcmd) + 31) >> 5);
#elif defined(CONFIG_X86)
      hcmd->cmdsize = ((((u32) &ihcmd->u.slic_buffers.bufs[1] -
                     (u32) hcmd) + 31) >> 5);
#else
      Stop Compilation;
#endif
}

#define NORMAL_ETHFRAME     0

static int slic_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
      struct sliccard *card;
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      struct slic_hostcmd *hcmd = NULL;
      u32 status = 0;
      u32 skbtype = NORMAL_ETHFRAME;
      void *offloadcmd = NULL;

      card = adapter->card;
      ASSERT(card);
      if ((adapter->linkstate != LINK_UP) ||
          (adapter->state != ADAPT_UP) || (card->state != CARD_UP)) {
            status = XMIT_FAIL_LINK_STATE;
            goto xmit_fail;

      } else if (skb->len == 0) {
            status = XMIT_FAIL_ZERO_LENGTH;
            goto xmit_fail;
      }

      if (skbtype == NORMAL_ETHFRAME) {
            hcmd = slic_cmdq_getfree(adapter);
            if (!hcmd) {
                  adapter->xmitq_full = 1;
                  status = XMIT_FAIL_HOSTCMD_FAIL;
                  goto xmit_fail;
            }
            ASSERT(hcmd->pslic_handle);
            ASSERT(hcmd->cmd64.hosthandle ==
                   hcmd->pslic_handle->token.handle_token);
            hcmd->skb = skb;
            hcmd->busy = 1;
            hcmd->type = SLIC_CMD_DUMB;
            if (skbtype == NORMAL_ETHFRAME)
                  slic_xmit_build_request(adapter, hcmd, skb);
      }
      adapter->stats.tx_packets++;
      adapter->stats.tx_bytes += skb->len;

#ifdef DEBUG_DUMP
      if (adapter->kill_card) {
            struct slic_host64_cmd ihcmd;

            ihcmd = &hcmd->cmd64;

            ihcmd->flags |= 0x40;
            adapter->kill_card = 0; /* only do this once */
      }
#endif
      if (hcmd->paddrh == 0) {
            slic_reg32_write(&adapter->slic_regs->slic_cbar,
                         (hcmd->paddrl | hcmd->cmdsize), DONT_FLUSH);
      } else {
            slic_reg64_write(adapter, &adapter->slic_regs->slic_cbar64,
                         (hcmd->paddrl | hcmd->cmdsize),
                         &adapter->slic_regs->slic_addr_upper,
                         hcmd->paddrh, DONT_FLUSH);
      }
xmit_done:
      return 0;
xmit_fail:
      slic_xmit_fail(adapter, skb, offloadcmd, skbtype, status);
      goto xmit_done;
}

static void slic_xmit_fail(struct adapter *adapter,
                struct sk_buff *skb,
                void *cmd, u32 skbtype, u32 status)
{
      if (adapter->xmitq_full)
            netif_stop_queue(adapter->netdev);
      if ((cmd == NULL) && (status <= XMIT_FAIL_HOSTCMD_FAIL)) {
            switch (status) {
            case XMIT_FAIL_LINK_STATE:
                  dev_err(&adapter->netdev->dev,
                        "reject xmit skb[%p: %x] linkstate[%s] "
                        "adapter[%s:%d] card[%s:%d]\n",
                        skb, skb->pkt_type,
                        SLIC_LINKSTATE(adapter->linkstate),
                        SLIC_ADAPTER_STATE(adapter->state),
                        adapter->state,
                        SLIC_CARD_STATE(adapter->card->state),
                        adapter->card->state);
                  break;
            case XMIT_FAIL_ZERO_LENGTH:
                  dev_err(&adapter->netdev->dev,
                        "xmit_start skb->len == 0 skb[%p] type[%x]\n",
                        skb, skb->pkt_type);
                  break;
            case XMIT_FAIL_HOSTCMD_FAIL:
                  dev_err(&adapter->netdev->dev,
                        "xmit_start skb[%p] type[%x] No host commands "
                        "available\n", skb, skb->pkt_type);
                  break;
            default:
                  ASSERT(0);
            }
      }
      dev_kfree_skb(skb);
      adapter->stats.tx_dropped++;
}

static void slic_rcv_handle_error(struct adapter *adapter,
                              struct slic_rcvbuf *rcvbuf)
{
      struct slic_hddr_wds *hdr = (struct slic_hddr_wds *)rcvbuf->data;

      if (adapter->devid != SLIC_1GB_DEVICE_ID) {
            if (hdr->frame_status14 & VRHSTAT_802OE)
                  adapter->if_events.oflow802++;
            if (hdr->frame_status14 & VRHSTAT_TPOFLO)
                  adapter->if_events.Tprtoflow++;
            if (hdr->frame_status_b14 & VRHSTATB_802UE)
                  adapter->if_events.uflow802++;
            if (hdr->frame_status_b14 & VRHSTATB_RCVE) {
                  adapter->if_events.rcvearly++;
                  adapter->stats.rx_fifo_errors++;
            }
            if (hdr->frame_status_b14 & VRHSTATB_BUFF) {
                  adapter->if_events.Bufov++;
                  adapter->stats.rx_over_errors++;
            }
            if (hdr->frame_status_b14 & VRHSTATB_CARRE) {
                  adapter->if_events.Carre++;
                  adapter->stats.tx_carrier_errors++;
            }
            if (hdr->frame_status_b14 & VRHSTATB_LONGE)
                  adapter->if_events.Longe++;
            if (hdr->frame_status_b14 & VRHSTATB_PREA)
                  adapter->if_events.Invp++;
            if (hdr->frame_status_b14 & VRHSTATB_CRC) {
                  adapter->if_events.Crc++;
                  adapter->stats.rx_crc_errors++;
            }
            if (hdr->frame_status_b14 & VRHSTATB_DRBL)
                  adapter->if_events.Drbl++;
            if (hdr->frame_status_b14 & VRHSTATB_CODE)
                  adapter->if_events.Code++;
            if (hdr->frame_status_b14 & VRHSTATB_TPCSUM)
                  adapter->if_events.TpCsum++;
            if (hdr->frame_status_b14 & VRHSTATB_TPHLEN)
                  adapter->if_events.TpHlen++;
            if (hdr->frame_status_b14 & VRHSTATB_IPCSUM)
                  adapter->if_events.IpCsum++;
            if (hdr->frame_status_b14 & VRHSTATB_IPLERR)
                  adapter->if_events.IpLen++;
            if (hdr->frame_status_b14 & VRHSTATB_IPHERR)
                  adapter->if_events.IpHlen++;
      } else {
            if (hdr->frame_statusGB & VGBSTAT_XPERR) {
                  u32 xerr = hdr->frame_statusGB >> VGBSTAT_XERRSHFT;

                  if (xerr == VGBSTAT_XCSERR)
                        adapter->if_events.TpCsum++;
                  if (xerr == VGBSTAT_XUFLOW)
                        adapter->if_events.Tprtoflow++;
                  if (xerr == VGBSTAT_XHLEN)
                        adapter->if_events.TpHlen++;
            }
            if (hdr->frame_statusGB & VGBSTAT_NETERR) {
                  u32 nerr =
                      (hdr->
                       frame_statusGB >> VGBSTAT_NERRSHFT) &
                      VGBSTAT_NERRMSK;
                  if (nerr == VGBSTAT_NCSERR)
                        adapter->if_events.IpCsum++;
                  if (nerr == VGBSTAT_NUFLOW)
                        adapter->if_events.IpLen++;
                  if (nerr == VGBSTAT_NHLEN)
                        adapter->if_events.IpHlen++;
            }
            if (hdr->frame_statusGB & VGBSTAT_LNKERR) {
                  u32 lerr = hdr->frame_statusGB & VGBSTAT_LERRMSK;

                  if (lerr == VGBSTAT_LDEARLY)
                        adapter->if_events.rcvearly++;
                  if (lerr == VGBSTAT_LBOFLO)
                        adapter->if_events.Bufov++;
                  if (lerr == VGBSTAT_LCODERR)
                        adapter->if_events.Code++;
                  if (lerr == VGBSTAT_LDBLNBL)
                        adapter->if_events.Drbl++;
                  if (lerr == VGBSTAT_LCRCERR)
                        adapter->if_events.Crc++;
                  if (lerr == VGBSTAT_LOFLO)
                        adapter->if_events.oflow802++;
                  if (lerr == VGBSTAT_LUFLO)
                        adapter->if_events.uflow802++;
            }
      }
      return;
}

#define TCP_OFFLOAD_FRAME_PUSHFLAG  0x10000000
#define M_FAST_PATH                 0x0040

static void slic_rcv_handler(struct adapter *adapter)
{
      struct sk_buff *skb;
      struct slic_rcvbuf *rcvbuf;
      u32 frames = 0;

      while ((skb = slic_rcvqueue_getnext(adapter))) {
            u32 rx_bytes;

            ASSERT(skb->head);
            rcvbuf = (struct slic_rcvbuf *)skb->head;
            adapter->card->events++;
            if (rcvbuf->status & IRHDDR_ERR) {
                  adapter->rx_errors++;
                  slic_rcv_handle_error(adapter, rcvbuf);
                  slic_rcvqueue_reinsert(adapter, skb);
                  continue;
            }

            if (!slic_mac_filter(adapter, (struct ether_header *)
                              rcvbuf->data)) {
                  slic_rcvqueue_reinsert(adapter, skb);
                  continue;
            }
            skb_pull(skb, SLIC_RCVBUF_HEADSIZE);
            rx_bytes = (rcvbuf->length & IRHDDR_FLEN_MSK);
            skb_put(skb, rx_bytes);
            adapter->stats.rx_packets++;
            adapter->stats.rx_bytes += rx_bytes;
#if SLIC_OFFLOAD_IP_CHECKSUM
            skb->ip_summed = CHECKSUM_UNNECESSARY;
#endif

            skb->dev = adapter->netdev;
            skb->protocol = eth_type_trans(skb, skb->dev);
            netif_rx(skb);

            ++frames;
#if SLIC_INTERRUPT_PROCESS_LIMIT
            if (frames >= SLIC_RCVQ_MAX_PROCESS_ISR) {
                  adapter->rcv_interrupt_yields++;
                  break;
            }
#endif
      }
      adapter->max_isr_rcvs = max(adapter->max_isr_rcvs, frames);
}

static void slic_xmit_complete(struct adapter *adapter)
{
      struct slic_hostcmd *hcmd;
      struct slic_rspbuf *rspbuf;
      u32 frames = 0;
      struct slic_handle_word slic_handle_word;

      do {
            rspbuf = slic_rspqueue_getnext(adapter);
            if (!rspbuf)
                  break;
            adapter->xmit_completes++;
            adapter->card->events++;
            /*
             Get the complete host command buffer
            */
            slic_handle_word.handle_token = rspbuf->hosthandle;
            ASSERT(slic_handle_word.handle_index);
            ASSERT(slic_handle_word.handle_index <= SLIC_CMDQ_MAXCMDS);
            hcmd =
                (struct slic_hostcmd *)
                  adapter->slic_handles[slic_handle_word.handle_index].
                                                      address;
/*      hcmd = (struct slic_hostcmd *) rspbuf->hosthandle; */
            ASSERT(hcmd);
            ASSERT(hcmd->pslic_handle ==
                   &adapter->slic_handles[slic_handle_word.handle_index]);
            if (hcmd->type == SLIC_CMD_DUMB) {
                  if (hcmd->skb)
                        dev_kfree_skb_irq(hcmd->skb);
                  slic_cmdq_putdone_irq(adapter, hcmd);
            }
            rspbuf->status = 0;
            rspbuf->hosthandle = 0;
            frames++;
      } while (1);
      adapter->max_isr_xmits = max(adapter->max_isr_xmits, frames);
}

static irqreturn_t slic_interrupt(int irq, void *dev_id)
{
      struct net_device *dev = (struct net_device *)dev_id;
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      u32 isr;

      if ((adapter->pshmem) && (adapter->pshmem->isr)) {
            slic_reg32_write(&adapter->slic_regs->slic_icr,
                         ICR_INT_MASK, FLUSH);
            isr = adapter->isrcopy = adapter->pshmem->isr;
            adapter->pshmem->isr = 0;
            adapter->num_isrs++;
            switch (adapter->card->state) {
            case CARD_UP:
                  if (isr & ~ISR_IO) {
                        if (isr & ISR_ERR) {
                              adapter->error_interrupts++;
                              if (isr & ISR_RMISS) {
                                    int count;
                                    int pre_count;
                                    int errors;

                                    struct slic_rcvqueue *rcvq =
                                        &adapter->rcvqueue;

                                    adapter->
                                        error_rmiss_interrupts++;
                                    if (!rcvq->errors)
                                          rcv_count = rcvq->count;
                                    pre_count = rcvq->count;
                                    errors = rcvq->errors;

                                    while (rcvq->count <
                                           SLIC_RCVQ_FILLTHRESH) {
                                          count =
                                              slic_rcvqueue_fill
                                              (adapter);
                                          if (!count)
                                                break;
                                    }
                              } else if (isr & ISR_XDROP) {
                                    dev_err(&dev->dev,
                                          "isr & ISR_ERR [%x] "
                                          "ISR_XDROP \n", isr);
                              } else {
                                    dev_err(&dev->dev,
                                          "isr & ISR_ERR [%x]\n",
                                          isr);
                              }
                        }

                        if (isr & ISR_LEVENT) {
                              adapter->linkevent_interrupts++;
                              slic_link_event_handler(adapter);
                        }

                        if ((isr & ISR_UPC) ||
                            (isr & ISR_UPCERR) || (isr & ISR_UPCBSY)) {
                              adapter->upr_interrupts++;
                              slic_upr_request_complete(adapter, isr);
                        }
                  }

                  if (isr & ISR_RCV) {
                        adapter->rcv_interrupts++;
                        slic_rcv_handler(adapter);
                  }

                  if (isr & ISR_CMD) {
                        adapter->xmit_interrupts++;
                        slic_xmit_complete(adapter);
                  }
                  break;

            case CARD_DOWN:
                  if ((isr & ISR_UPC) ||
                      (isr & ISR_UPCERR) || (isr & ISR_UPCBSY)) {
                        adapter->upr_interrupts++;
                        slic_upr_request_complete(adapter, isr);
                  }
                  break;

            default:
                  break;
            }

            adapter->isrcopy = 0;
            adapter->all_reg_writes += 2;
            adapter->isr_reg_writes++;
            slic_reg32_write(&adapter->slic_regs->slic_isr, 0, FLUSH);
      } else {
            adapter->false_interrupts++;
      }
      return IRQ_HANDLED;
}

/*
 * slic_link_event_handler -
 *
 * Initiate a link configuration sequence.  The link configuration begins
 * by issuing a READ_LINK_STATUS command to the Utility Processor on the
 * SLIC.  Since the command finishes asynchronously, the slic_upr_comlete
 * routine will follow it up witha UP configuration write command, which
 * will also complete asynchronously.
 *
 */
static void slic_link_event_handler(struct adapter *adapter)
{
      int status;
      struct slic_shmem *pshmem;

      if (adapter->state != ADAPT_UP) {
            /* Adapter is not operational.  Ignore.  */
            return;
      }

      pshmem = (struct slic_shmem *)adapter->phys_shmem;

#if defined(CONFIG_X86_64)
      status = slic_upr_request(adapter,
                          SLIC_UPR_RLSR,
                          SLIC_GET_ADDR_LOW(&pshmem->linkstatus),
                          SLIC_GET_ADDR_HIGH(&pshmem->linkstatus),
                          0, 0);
#elif defined(CONFIG_X86)
      status = slic_upr_request(adapter, SLIC_UPR_RLSR,
            (u32) &pshmem->linkstatus,    /* no 4GB wrap guaranteed */
                          0, 0, 0);
#else
      Stop compilation;
#endif
      ASSERT((status == STATUS_SUCCESS) || (status == STATUS_PENDING));
}

static void slic_init_cleanup(struct adapter *adapter)
{
      if (adapter->intrregistered) {
            adapter->intrregistered = 0;
            free_irq(adapter->netdev->irq, adapter->netdev);

      }
      if (adapter->pshmem) {
            pci_free_consistent(adapter->pcidev,
                            sizeof(struct slic_shmem),
                            adapter->pshmem, adapter->phys_shmem);
            adapter->pshmem = NULL;
            adapter->phys_shmem = (dma_addr_t) NULL;
      }

      if (adapter->pingtimerset) {
            adapter->pingtimerset = 0;
            del_timer(&adapter->pingtimer);
      }

      slic_rspqueue_free(adapter);
      slic_cmdq_free(adapter);
      slic_rcvqueue_free(adapter);
}

static struct net_device_stats *slic_get_stats(struct net_device *dev)
{
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      struct net_device_stats *stats;

      ASSERT(adapter);
      stats = &adapter->stats;
      stats->collisions = adapter->slic_stats.iface.xmit_collisions;
      stats->rx_errors = adapter->slic_stats.iface.rcv_errors;
      stats->tx_errors = adapter->slic_stats.iface.xmt_errors;
      stats->rx_missed_errors = adapter->slic_stats.iface.rcv_discards;
      stats->tx_heartbeat_errors = 0;
      stats->tx_aborted_errors = 0;
      stats->tx_window_errors = 0;
      stats->tx_fifo_errors = 0;
      stats->rx_frame_errors = 0;
      stats->rx_length_errors = 0;
      return &adapter->stats;
}

/*
 *  Allocate a mcast_address structure to hold the multicast address.
 *  Link it in.
 */
static int slic_mcast_add_list(struct adapter *adapter, char *address)
{
      struct mcast_address *mcaddr, *mlist;
      bool equaladdr;

      /* Check to see if it already exists */
      mlist = adapter->mcastaddrs;
      while (mlist) {
            ETHER_EQ_ADDR(mlist->address, address, equaladdr);
            if (equaladdr)
                  return STATUS_SUCCESS;
            mlist = mlist->next;
      }

      /* Doesn't already exist.  Allocate a structure to hold it */
      mcaddr = kmalloc(sizeof(struct mcast_address), GFP_ATOMIC);
      if (mcaddr == NULL)
            return 1;

      memcpy(mcaddr->address, address, 6);

      mcaddr->next = adapter->mcastaddrs;
      adapter->mcastaddrs = mcaddr;

      return STATUS_SUCCESS;
}

/*
 * Functions to obtain the CRC corresponding to the destination mac address.
 * This is a standard ethernet CRC in that it is a 32-bit, reflected CRC using
 * the polynomial:
 *   x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 +
 *   x^4 + x^2 + x^1.
 *
 * After the CRC for the 6 bytes is generated (but before the value is
 * complemented),
 * we must then transpose the value and return bits 30-23.
 *
 */
static u32 slic_crc_table[256];     /* Table of CRCs for all possible byte values */
static u32 slic_crc_init;     /* Is table initialized */

/*
 *  Contruct the CRC32 table
 */
static void slic_mcast_init_crc32(void)
{
      u32 c;            /*  CRC shit reg                 */
      u32 e = 0;        /*  Poly X-or pattern            */
      int i;                  /*  counter                      */
      int k;                  /*  byte being shifted into crc  */

      static int p[] = { 0, 1, 2, 4, 5, 7, 8, 10, 11, 12, 16, 22, 23, 26 };

      for (i = 0; i < sizeof(p) / sizeof(int); i++)
            e |= 1L << (31 - p[i]);

      for (i = 1; i < 256; i++) {
            c = i;
            for (k = 8; k; k--)
                  c = c & 1 ? (c >> 1) ^ e : c >> 1;
            slic_crc_table[i] = c;
      }
}

/*
 *  Return the MAC hast as described above.
 */
static unsigned char slic_mcast_get_mac_hash(char *macaddr)
{
      u32 crc;
      char *p;
      int i;
      unsigned char machash = 0;

      if (!slic_crc_init) {
            slic_mcast_init_crc32();
            slic_crc_init = 1;
      }

      crc = 0xFFFFFFFF; /* Preload shift register, per crc-32 spec */
      for (i = 0, p = macaddr; i < 6; ++p, ++i)
            crc = (crc >> 8) ^ slic_crc_table[(crc ^ *p) & 0xFF];

      /* Return bits 1-8, transposed */
      for (i = 1; i < 9; i++)
            machash |= (((crc >> i) & 1) << (8 - i));

      return machash;
}

static void slic_mcast_set_bit(struct adapter *adapter, char *address)
{
      unsigned char crcpoly;

      /* Get the CRC polynomial for the mac address */
      crcpoly = slic_mcast_get_mac_hash(address);

      /* We only have space on the SLIC for 64 entries.  Lop
       * off the top two bits. (2^6 = 64)
       */
      crcpoly &= 0x3F;

      /* OR in the new bit into our 64 bit mask. */
      adapter->mcastmask |= (u64) 1 << crcpoly;
}

static void slic_mcast_set_list(struct net_device *dev)
{
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      int status = STATUS_SUCCESS;
      int i;
      char *addresses;
      struct dev_mc_list *mc_list = dev->mc_list;
      int mc_count = dev->mc_count;

      ASSERT(adapter);

      for (i = 1; i <= mc_count; i++) {
            addresses = (char *) &mc_list->dmi_addr;
            if (mc_list->dmi_addrlen == 6) {
                  status = slic_mcast_add_list(adapter, addresses);
                  if (status != STATUS_SUCCESS)
                        break;
            } else {
                  status = -EINVAL;
                  break;
            }
            slic_mcast_set_bit(adapter, addresses);
            mc_list = mc_list->next;
      }

      if (adapter->devflags_prev != dev->flags) {
            adapter->macopts = MAC_DIRECTED;
            if (dev->flags) {
                  if (dev->flags & IFF_BROADCAST)
                        adapter->macopts |= MAC_BCAST;
                  if (dev->flags & IFF_PROMISC)
                        adapter->macopts |= MAC_PROMISC;
                  if (dev->flags & IFF_ALLMULTI)
                        adapter->macopts |= MAC_ALLMCAST;
                  if (dev->flags & IFF_MULTICAST)
                        adapter->macopts |= MAC_MCAST;
            }
            adapter->devflags_prev = dev->flags;
            slic_config_set(adapter, true);
      } else {
            if (status == STATUS_SUCCESS)
                  slic_mcast_set_mask(adapter);
      }
      return;
}

static void slic_mcast_set_mask(struct adapter *adapter)
{
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;

      if (adapter->macopts & (MAC_ALLMCAST | MAC_PROMISC)) {
            /* Turn on all multicast addresses. We have to do this for
             * promiscuous mode as well as ALLMCAST mode.  It saves the
             * Microcode from having to keep state about the MAC
             * configuration.
             */
            slic_reg32_write(&slic_regs->slic_mcastlow, 0xFFFFFFFF, FLUSH);
            slic_reg32_write(&slic_regs->slic_mcasthigh, 0xFFFFFFFF,
                         FLUSH);
      } else {
            /* Commit our multicast mast to the SLIC by writing to the
             * multicast address mask registers
             */
            slic_reg32_write(&slic_regs->slic_mcastlow,
                  (u32)(adapter->mcastmask & 0xFFFFFFFF), FLUSH);
            slic_reg32_write(&slic_regs->slic_mcasthigh,
                  (u32)((adapter->mcastmask >> 32) & 0xFFFFFFFF), FLUSH);
      }
}

static void slic_timer_ping(ulong dev)
{
      struct adapter *adapter;
      struct sliccard *card;

      ASSERT(dev);
      adapter = netdev_priv((struct net_device *)dev);
      ASSERT(adapter);
      card = adapter->card;
      ASSERT(card);

      adapter->pingtimer.expires = jiffies + (PING_TIMER_INTERVAL * HZ);
      add_timer(&adapter->pingtimer);
}

/*
 *  slic_if_init
 *
 *  Perform initialization of our slic interface.
 *
 */
static int slic_if_init(struct adapter *adapter)
{
      struct sliccard *card = adapter->card;
      struct net_device *dev = adapter->netdev;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;
      struct slic_shmem *pshmem;
      int status = 0;

      ASSERT(card);

      /* adapter should be down at this point */
      if (adapter->state != ADAPT_DOWN) {
            dev_err(&dev->dev, "%s: adapter->state != ADAPT_DOWN\n",
                  __func__);
            return -EIO;
      }
      ASSERT(adapter->linkstate == LINK_DOWN);

      adapter->devflags_prev = dev->flags;
      adapter->macopts = MAC_DIRECTED;
      if (dev->flags) {
            if (dev->flags & IFF_BROADCAST)
                  adapter->macopts |= MAC_BCAST;
            if (dev->flags & IFF_PROMISC)
                  adapter->macopts |= MAC_PROMISC;
            if (dev->flags & IFF_ALLMULTI)
                  adapter->macopts |= MAC_ALLMCAST;
            if (dev->flags & IFF_MULTICAST)
                  adapter->macopts |= MAC_MCAST;
      }
      status = slic_adapter_allocresources(adapter);
      if (status != STATUS_SUCCESS) {
            dev_err(&dev->dev,
                  "%s: slic_adapter_allocresources FAILED %x\n",
                  __func__, status);
            slic_adapter_freeresources(adapter);
            return status;
      }

      if (!adapter->queues_initialized) {
            if (slic_rspqueue_init(adapter))
                  return -ENOMEM;
            if (slic_cmdq_init(adapter))
                  return -ENOMEM;
            if (slic_rcvqueue_init(adapter))
                  return -ENOMEM;
            adapter->queues_initialized = 1;
      }

      slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
      mdelay(1);

      if (!adapter->isp_initialized) {
            pshmem = (struct slic_shmem *)adapter->phys_shmem;

            spin_lock_irqsave(&adapter->bit64reglock.lock,
                              adapter->bit64reglock.flags);

#if defined(CONFIG_X86_64)
            slic_reg32_write(&slic_regs->slic_addr_upper,
                         SLIC_GET_ADDR_HIGH(&pshmem->isr), DONT_FLUSH);
            slic_reg32_write(&slic_regs->slic_isp,
                         SLIC_GET_ADDR_LOW(&pshmem->isr), FLUSH);
#elif defined(CONFIG_X86)
            slic_reg32_write(&slic_regs->slic_addr_upper, 0, DONT_FLUSH);
            slic_reg32_write(&slic_regs->slic_isp, (u32)&pshmem->isr, FLUSH);
#else
            Stop Compilations
#endif
            spin_unlock_irqrestore(&adapter->bit64reglock.lock,
                              adapter->bit64reglock.flags);
            adapter->isp_initialized = 1;
      }

      adapter->state = ADAPT_UP;
      if (!card->loadtimerset) {
            init_timer(&card->loadtimer);
            card->loadtimer.expires =
                jiffies + (SLIC_LOADTIMER_PERIOD * HZ);
            card->loadtimer.data = (ulong) card;
            card->loadtimer.function = &slic_timer_load_check;
            add_timer(&card->loadtimer);

            card->loadtimerset = 1;
      }

      if (!adapter->pingtimerset) {
            init_timer(&adapter->pingtimer);
            adapter->pingtimer.expires =
                jiffies + (PING_TIMER_INTERVAL * HZ);
            adapter->pingtimer.data = (ulong) dev;
            adapter->pingtimer.function = &slic_timer_ping;
            add_timer(&adapter->pingtimer);
            adapter->pingtimerset = 1;
            adapter->card->pingstatus = ISR_PINGMASK;
      }

      /*
       *    clear any pending events, then enable interrupts
       */
      adapter->isrcopy = 0;
      adapter->pshmem->isr = 0;
      slic_reg32_write(&slic_regs->slic_isr, 0, FLUSH);
      slic_reg32_write(&slic_regs->slic_icr, ICR_INT_ON, FLUSH);

      slic_link_config(adapter, LINK_AUTOSPEED, LINK_AUTOD);
      slic_link_event_handler(adapter);

      return STATUS_SUCCESS;
}

static void slic_unmap_mmio_space(struct adapter *adapter)
{
      if (adapter->slic_regs)
            iounmap(adapter->slic_regs);
      adapter->slic_regs = NULL;
}

static int slic_adapter_allocresources(struct adapter *adapter)
{
      if (!adapter->intrregistered) {
            int retval;

            spin_unlock_irqrestore(&slic_global.driver_lock.lock,
                              slic_global.driver_lock.flags);

            retval = request_irq(adapter->netdev->irq,
                             &slic_interrupt,
                             IRQF_SHARED,
                             adapter->netdev->name, adapter->netdev);

            spin_lock_irqsave(&slic_global.driver_lock.lock,
                              slic_global.driver_lock.flags);

            if (retval) {
                  dev_err(&adapter->netdev->dev,
                        "request_irq (%s) FAILED [%x]\n",
                        adapter->netdev->name, retval);
                  return retval;
            }
            adapter->intrregistered = 1;
      }
      return STATUS_SUCCESS;
}

static void slic_config_pci(struct pci_dev *pcidev)
{
      u16 pci_command;
      u16 new_command;

      pci_read_config_word(pcidev, PCI_COMMAND, &pci_command);

      new_command = pci_command | PCI_COMMAND_MASTER
          | PCI_COMMAND_MEMORY
          | PCI_COMMAND_INVALIDATE
          | PCI_COMMAND_PARITY | PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK;
      if (pci_command != new_command)
            pci_write_config_word(pcidev, PCI_COMMAND, new_command);
}

static void slic_adapter_freeresources(struct adapter *adapter)
{
      slic_init_cleanup(adapter);
      memset(&adapter->stats, 0, sizeof(struct net_device_stats));
      adapter->error_interrupts = 0;
      adapter->rcv_interrupts = 0;
      adapter->xmit_interrupts = 0;
      adapter->linkevent_interrupts = 0;
      adapter->upr_interrupts = 0;
      adapter->num_isrs = 0;
      adapter->xmit_completes = 0;
      adapter->rcv_broadcasts = 0;
      adapter->rcv_multicasts = 0;
      adapter->rcv_unicasts = 0;
}

/*
 *  slic_link_config
 *
 *  Write phy control to configure link duplex/speed
 *
 */
static void slic_link_config(struct adapter *adapter,
                  u32 linkspeed, u32 linkduplex)
{
      u32 __iomem *wphy;
      u32 speed;
      u32 duplex;
      u32 phy_config;
      u32 phy_advreg;
      u32 phy_gctlreg;

      if (adapter->state != ADAPT_UP)
            return;

      ASSERT((adapter->devid == SLIC_1GB_DEVICE_ID)
             || (adapter->devid == SLIC_2GB_DEVICE_ID));

      if (linkspeed > LINK_1000MB)
            linkspeed = LINK_AUTOSPEED;
      if (linkduplex > LINK_AUTOD)
            linkduplex = LINK_AUTOD;

      wphy = &adapter->slic_regs->slic_wphy;

      if ((linkspeed == LINK_AUTOSPEED) || (linkspeed == LINK_1000MB)) {
            if (adapter->flags & ADAPT_FLAGS_FIBERMEDIA) {
                  /*  We've got a fiber gigabit interface, and register
                   *  4 is different in fiber mode than in copper mode
                   */

                  /* advertise FD only @1000 Mb */
                  phy_advreg = (MIICR_REG_4 | (PAR_ADV1000XFD));
                  /* enable PAUSE frames        */
                  phy_advreg |= PAR_ASYMPAUSE_FIBER;
                  slic_reg32_write(wphy, phy_advreg, FLUSH);

                  if (linkspeed == LINK_AUTOSPEED) {
                        /* reset phy, enable auto-neg  */
                        phy_config =
                            (MIICR_REG_PCR |
                             (PCR_RESET | PCR_AUTONEG |
                              PCR_AUTONEG_RST));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                  } else {    /* forced 1000 Mb FD*/
                        /* power down phy to break link
                           this may not work) */
                        phy_config = (MIICR_REG_PCR | PCR_POWERDOWN);
                        slic_reg32_write(wphy, phy_config, FLUSH);
                        /* wait, Marvell says 1 sec,
                           try to get away with 10 ms  */
                        mdelay(10);

                        /* disable auto-neg, set speed/duplex,
                           soft reset phy, powerup */
                        phy_config =
                            (MIICR_REG_PCR |
                             (PCR_RESET | PCR_SPEED_1000 |
                              PCR_DUPLEX_FULL));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                  }
            } else {    /* copper gigabit */

                  /* Auto-Negotiate or 1000 Mb must be auto negotiated
                   * We've got a copper gigabit interface, and
                   * register 4 is different in copper mode than
                   * in fiber mode
                   */
                  if (linkspeed == LINK_AUTOSPEED) {
                        /* advertise 10/100 Mb modes   */
                        phy_advreg =
                            (MIICR_REG_4 |
                             (PAR_ADV100FD | PAR_ADV100HD | PAR_ADV10FD
                              | PAR_ADV10HD));
                  } else {
                  /* linkspeed == LINK_1000MB -
                     don't advertise 10/100 Mb modes  */
                        phy_advreg = MIICR_REG_4;
                  }
                  /* enable PAUSE frames  */
                  phy_advreg |= PAR_ASYMPAUSE;
                  /* required by the Cicada PHY  */
                  phy_advreg |= PAR_802_3;
                  slic_reg32_write(wphy, phy_advreg, FLUSH);
                  /* advertise FD only @1000 Mb  */
                  phy_gctlreg = (MIICR_REG_9 | (PGC_ADV1000FD));
                  slic_reg32_write(wphy, phy_gctlreg, FLUSH);

                  if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
                        /* if a Marvell PHY
                           enable auto crossover */
                        phy_config =
                            (MIICR_REG_16 | (MRV_REG16_XOVERON));
                        slic_reg32_write(wphy, phy_config, FLUSH);

                        /* reset phy, enable auto-neg  */
                        phy_config =
                            (MIICR_REG_PCR |
                             (PCR_RESET | PCR_AUTONEG |
                              PCR_AUTONEG_RST));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                  } else {    /* it's a Cicada PHY  */
                        /* enable and restart auto-neg (don't reset)  */
                        phy_config =
                            (MIICR_REG_PCR |
                             (PCR_AUTONEG | PCR_AUTONEG_RST));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                  }
            }
      } else {
            /* Forced 10/100  */
            if (linkspeed == LINK_10MB)
                  speed = 0;
            else
                  speed = PCR_SPEED_100;
            if (linkduplex == LINK_HALFD)
                  duplex = 0;
            else
                  duplex = PCR_DUPLEX_FULL;

            if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
                  /* if a Marvell PHY
                     disable auto crossover  */
                  phy_config = (MIICR_REG_16 | (MRV_REG16_XOVEROFF));
                  slic_reg32_write(wphy, phy_config, FLUSH);
            }

            /* power down phy to break link (this may not work)  */
            phy_config = (MIICR_REG_PCR | (PCR_POWERDOWN | speed | duplex));
            slic_reg32_write(wphy, phy_config, FLUSH);

            /* wait, Marvell says 1 sec, try to get away with 10 ms */
            mdelay(10);

            if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
                  /* if a Marvell PHY
                     disable auto-neg, set speed,
                     soft reset phy, powerup */
                  phy_config =
                      (MIICR_REG_PCR | (PCR_RESET | speed | duplex));
                  slic_reg32_write(wphy, phy_config, FLUSH);
            } else {    /* it's a Cicada PHY  */
                  /* disable auto-neg, set speed, powerup  */
                  phy_config = (MIICR_REG_PCR | (speed | duplex));
                  slic_reg32_write(wphy, phy_config, FLUSH);
            }
      }
}

static void slic_card_cleanup(struct sliccard *card)
{
      if (card->loadtimerset) {
            card->loadtimerset = 0;
            del_timer(&card->loadtimer);
      }

      slic_debug_card_destroy(card);

      kfree(card);
}

static int slic_card_download_gbrcv(struct adapter *adapter)
{
      const struct firmware *fw;
      const char *file = "";
      int ret;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;
      u32 codeaddr;
      u32 instruction;
      int index = 0;
      u32 rcvucodelen = 0;

      switch (adapter->devid) {
      case SLIC_2GB_DEVICE_ID:
            file = "slicoss/oasisrcvucode.sys";
            break;
      case SLIC_1GB_DEVICE_ID:
            file = "slicoss/gbrcvucode.sys";
            break;
      default:
            ASSERT(0);
            break;
      }

      ret = request_firmware(&fw, file, &adapter->pcidev->dev);
      if (ret) {
            dev_err(&adapter->pcidev->dev,
                  "SLICOSS: Failed to load firmware %s\n", file);
            return ret;
      }

      rcvucodelen = *(u32 *)(fw->data + index);
      index += 4;
      switch (adapter->devid) {
      case SLIC_2GB_DEVICE_ID:
            if (rcvucodelen != OasisRcvUCodeLen)
                  return -EINVAL;
            break;
      case SLIC_1GB_DEVICE_ID:
            if (rcvucodelen != GBRcvUCodeLen)
                  return -EINVAL;
            break;
      default:
            ASSERT(0);
            break;
      }
      /* start download */
      slic_reg32_write(&slic_regs->slic_rcv_wcs, SLIC_RCVWCS_BEGIN, FLUSH);
      /* download the rcv sequencer ucode */
      for (codeaddr = 0; codeaddr < rcvucodelen; codeaddr++) {
            /* write out instruction address */
            slic_reg32_write(&slic_regs->slic_rcv_wcs, codeaddr, FLUSH);

            instruction = *(u32 *)(fw->data + index);
            index += 4;
            /* write out the instruction data low addr */
            slic_reg32_write(&slic_regs->slic_rcv_wcs, instruction, FLUSH);

            instruction = *(u8 *)(fw->data + index);
            index++;
            /* write out the instruction data high addr */
            slic_reg32_write(&slic_regs->slic_rcv_wcs, (u8)instruction,
                         FLUSH);
      }

      /* download finished */
      release_firmware(fw);
      slic_reg32_write(&slic_regs->slic_rcv_wcs, SLIC_RCVWCS_FINISH, FLUSH);
      return 0;
}

static int slic_card_download(struct adapter *adapter)
{
      const struct firmware *fw;
      const char *file = "";
      int ret;
      u32 section;
      int thissectionsize;
      int codeaddr;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;
      u32 instruction;
      u32 baseaddress;
      u32 i;
      u32 numsects = 0;
      u32 sectsize[3];
      u32 sectstart[3];
      int ucode_start, index = 0;

      switch (adapter->devid) {
      case SLIC_2GB_DEVICE_ID:
            file = "slicoss/oasisdownload.sys";
            break;
      case SLIC_1GB_DEVICE_ID:
            file = "slicoss/gbdownload.sys";
            break;
      default:
            ASSERT(0);
            break;
      }
      ret = request_firmware(&fw, file, &adapter->pcidev->dev);
      if (ret) {
            dev_err(&adapter->pcidev->dev,
                  "SLICOSS: Failed to load firmware %s\n", file);
            return ret;
      }
      numsects = *(u32 *)(fw->data + index);
      index += 4;
      ASSERT(numsects <= 3);
      for (i = 0; i < numsects; i++) {
            sectsize[i] = *(u32 *)(fw->data + index);
            index += 4;
      }
      for (i = 0; i < numsects; i++) {
            sectstart[i] = *(u32 *)(fw->data + index);
            index += 4;
      }
      ucode_start = index;
      instruction = *(u32 *)(fw->data + index);
      index += 4;
      for (section = 0; section < numsects; section++) {
            baseaddress = sectstart[section];
            thissectionsize = sectsize[section] >> 3;

            for (codeaddr = 0; codeaddr < thissectionsize; codeaddr++) {
                  /* Write out instruction address */
                  slic_reg32_write(&slic_regs->slic_wcs,
                               baseaddress + codeaddr, FLUSH);
                  /* Write out instruction to low addr */
                  slic_reg32_write(&slic_regs->slic_wcs, instruction, FLUSH);
                  instruction = *(u32 *)(fw->data + index);
                  index += 4;

                  /* Write out instruction to high addr */
                  slic_reg32_write(&slic_regs->slic_wcs, instruction, FLUSH);
                  instruction = *(u32 *)(fw->data + index);
                  index += 4;
            }
      }
      index = ucode_start;
      for (section = 0; section < numsects; section++) {
            instruction = *(u32 *)(fw->data + index);
            baseaddress = sectstart[section];
            if (baseaddress < 0x8000)
                  continue;
            thissectionsize = sectsize[section] >> 3;

            for (codeaddr = 0; codeaddr < thissectionsize; codeaddr++) {
                  /* Write out instruction address */
                  slic_reg32_write(&slic_regs->slic_wcs,
                        SLIC_WCS_COMPARE | (baseaddress + codeaddr),
                        FLUSH);
                  /* Write out instruction to low addr */
                  slic_reg32_write(&slic_regs->slic_wcs, instruction,
                               FLUSH);
                  instruction = *(u32 *)(fw->data + index);
                  index += 4;
                  /* Write out instruction to high addr */
                  slic_reg32_write(&slic_regs->slic_wcs, instruction,
                               FLUSH);
                  instruction = *(u32 *)(fw->data + index);
                  index += 4;

                  /* Check SRAM location zero. If it is non-zero. Abort.*/
/*                failure = readl((u32 __iomem *)&slic_regs->slic_reset);
                  if (failure) {
                        release_firmware(fw);
                        return -EIO;
                  }*/
            }
      }
      release_firmware(fw);
      /* Everything OK, kick off the card */
      mdelay(10);
      slic_reg32_write(&slic_regs->slic_wcs, SLIC_WCS_START, FLUSH);

      /* stall for 20 ms, long enough for ucode to init card
         and reach mainloop */
      mdelay(20);

      return STATUS_SUCCESS;
}

static void slic_adapter_set_hwaddr(struct adapter *adapter)
{
      struct sliccard *card = adapter->card;

      if ((adapter->card) && (card->config_set)) {
            memcpy(adapter->macaddr,
                   card->config.MacInfo[adapter->functionnumber].macaddrA,
                   sizeof(struct slic_config_mac));
            if (!(adapter->currmacaddr[0] || adapter->currmacaddr[1] ||
                  adapter->currmacaddr[2] || adapter->currmacaddr[3] ||
                  adapter->currmacaddr[4] || adapter->currmacaddr[5])) {
                  memcpy(adapter->currmacaddr, adapter->macaddr, 6);
            }
            if (adapter->netdev) {
                  memcpy(adapter->netdev->dev_addr, adapter->currmacaddr,
                         6);
            }
      }
}

static void slic_intagg_set(struct adapter *adapter, u32 value)
{
      slic_reg32_write(&adapter->slic_regs->slic_intagg, value, FLUSH);
      adapter->card->loadlevel_current = value;
}

static int slic_card_init(struct sliccard *card, struct adapter *adapter)
{
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;
      struct slic_eeprom *peeprom;
      struct oslic_eeprom *pOeeprom;
      dma_addr_t phys_config;
      u32 phys_configh;
      u32 phys_configl;
      u32 i = 0;
      struct slic_shmem *pshmem;
      int status;
      uint macaddrs = card->card_size;
      ushort eecodesize;
      ushort dramsize;
      ushort ee_chksum;
      ushort calc_chksum;
      struct slic_config_mac *pmac;
      unsigned char fruformat;
      unsigned char oemfruformat;
      struct atk_fru *patkfru;
      union oemfru *poemfru;

      /* Reset everything except PCI configuration space */
      slic_soft_reset(adapter);

      /* Download the microcode */
      status = slic_card_download(adapter);

      if (status != STATUS_SUCCESS) {
            dev_err(&adapter->pcidev->dev,
                  "download failed bus %d slot %d\n",
                  adapter->busnumber, adapter->slotnumber);
            return status;
      }

      if (!card->config_set) {
            peeprom = pci_alloc_consistent(adapter->pcidev,
                                     sizeof(struct slic_eeprom),
                                     &phys_config);

            phys_configl = SLIC_GET_ADDR_LOW(phys_config);
            phys_configh = SLIC_GET_ADDR_HIGH(phys_config);

            if (!peeprom) {
                  dev_err(&adapter->pcidev->dev,
                        "eeprom read failed to get memory "
                        "bus %d slot %d\n", adapter->busnumber,
                        adapter->slotnumber);
                  return -ENOMEM;
            } else {
                  memset(peeprom, 0, sizeof(struct slic_eeprom));
            }
            slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
            mdelay(1);
            pshmem = (struct slic_shmem *)adapter->phys_shmem;

            spin_lock_irqsave(&adapter->bit64reglock.lock,
                              adapter->bit64reglock.flags);
            slic_reg32_write(&slic_regs->slic_addr_upper, 0, DONT_FLUSH);
            slic_reg32_write(&slic_regs->slic_isp,
                         SLIC_GET_ADDR_LOW(&pshmem->isr), FLUSH);
            spin_unlock_irqrestore(&adapter->bit64reglock.lock,
                              adapter->bit64reglock.flags);

            slic_config_get(adapter, phys_configl, phys_configh);

            for (;;) {
                  if (adapter->pshmem->isr) {
                        if (adapter->pshmem->isr & ISR_UPC) {
                              adapter->pshmem->isr = 0;
                              slic_reg64_write(adapter,
                                    &slic_regs->slic_isp, 0,
                                    &slic_regs->slic_addr_upper,
                                    0, FLUSH);
                              slic_reg32_write(&slic_regs->slic_isr,
                                           0, FLUSH);

                              slic_upr_request_complete(adapter, 0);
                              break;
                        } else {
                              adapter->pshmem->isr = 0;
                              slic_reg32_write(&slic_regs->slic_isr,
                                           0, FLUSH);
                        }
                  } else {
                        mdelay(1);
                        i++;
                        if (i > 5000) {
                              dev_err(&adapter->pcidev->dev,
                                    "%d config data fetch timed out!\n",
                                    adapter->port);
                              slic_reg64_write(adapter,
                                    &slic_regs->slic_isp, 0,
                                    &slic_regs->slic_addr_upper,
                                    0, FLUSH);
                              return -EINVAL;
                        }
                  }
            }

            switch (adapter->devid) {
            /* Oasis card */
            case SLIC_2GB_DEVICE_ID:
                  /* extract EEPROM data and pointers to EEPROM data */
                  pOeeprom = (struct oslic_eeprom *) peeprom;
                  eecodesize = pOeeprom->EecodeSize;
                  dramsize = pOeeprom->DramSize;
                  pmac = pOeeprom->MacInfo;
                  fruformat = pOeeprom->FruFormat;
                  patkfru = &pOeeprom->AtkFru;
                  oemfruformat = pOeeprom->OemFruFormat;
                  poemfru = &pOeeprom->OemFru;
                  macaddrs = 2;
                  /* Minor kludge for Oasis card
                       get 2 MAC addresses from the
                       EEPROM to ensure that function 1
                       gets the Port 1 MAC address */
                  break;
            default:
                  /* extract EEPROM data and pointers to EEPROM data */
                  eecodesize = peeprom->EecodeSize;
                  dramsize = peeprom->DramSize;
                  pmac = peeprom->u2.mac.MacInfo;
                  fruformat = peeprom->FruFormat;
                  patkfru = &peeprom->AtkFru;
                  oemfruformat = peeprom->OemFruFormat;
                  poemfru = &peeprom->OemFru;
                  break;
            }

            card->config.EepromValid = false;

            /*  see if the EEPROM is valid by checking it's checksum */
            if ((eecodesize <= MAX_EECODE_SIZE) &&
                (eecodesize >= MIN_EECODE_SIZE)) {

                  ee_chksum =
                      *(u16 *) ((char *) peeprom + (eecodesize - 2));
                  /*
                      calculate the EEPROM checksum
                  */
                  calc_chksum =
                      ~slic_eeprom_cksum((char *) peeprom,
                                     (eecodesize - 2));
                  /*
                      if the ucdoe chksum flag bit worked,
                      we wouldn't need this shit
                  */
                  if (ee_chksum == calc_chksum)
                        card->config.EepromValid = true;
            }
            /*  copy in the DRAM size */
            card->config.DramSize = dramsize;

            /*  copy in the MAC address(es) */
            for (i = 0; i < macaddrs; i++) {
                  memcpy(&card->config.MacInfo[i],
                         &pmac[i], sizeof(struct slic_config_mac));
            }

            /*  copy the Alacritech FRU information */
            card->config.FruFormat = fruformat;
            memcpy(&card->config.AtkFru, patkfru,
                                    sizeof(struct atk_fru));

            pci_free_consistent(adapter->pcidev,
                            sizeof(struct slic_eeprom),
                            peeprom, phys_config);

            if ((!card->config.EepromValid) &&
                (adapter->reg_params.fail_on_bad_eeprom)) {
                  slic_reg64_write(adapter, &slic_regs->slic_isp, 0,
                               &slic_regs->slic_addr_upper,
                               0, FLUSH);
                  dev_err(&adapter->pcidev->dev,
                        "unsupported CONFIGURATION EEPROM invalid\n");
                  return -EINVAL;
            }

            card->config_set = 1;
      }

      if (slic_card_download_gbrcv(adapter)) {
            dev_err(&adapter->pcidev->dev,
                  "unable to download GB receive microcode\n");
            return -EINVAL;
      }

      if (slic_global.dynamic_intagg)
            slic_intagg_set(adapter, 0);
      else
            slic_intagg_set(adapter, intagg_delay);

      /*
       *  Initialize ping status to "ok"
       */
      card->pingstatus = ISR_PINGMASK;

      /*
       * Lastly, mark our card state as up and return success
       */
      card->state = CARD_UP;
      card->reset_in_progress = 0;

      return STATUS_SUCCESS;
}

static u32 slic_card_locate(struct adapter *adapter)
{
      struct sliccard *card = slic_global.slic_card;
      struct physcard *physcard = slic_global.phys_card;
      ushort card_hostid;
      u16 __iomem *hostid_reg;
      uint i;
      uint rdhostid_offset = 0;

      switch (adapter->devid) {
      case SLIC_2GB_DEVICE_ID:
            rdhostid_offset = SLIC_RDHOSTID_2GB;
            break;
      case SLIC_1GB_DEVICE_ID:
            rdhostid_offset = SLIC_RDHOSTID_1GB;
            break;
      default:
            ASSERT(0);
            break;
      }

      hostid_reg =
          (u16 __iomem *) (((u8 __iomem *) (adapter->slic_regs)) +
          rdhostid_offset);

      /* read the 16 bit hostid from SRAM */
      card_hostid = (ushort) readw(hostid_reg);

      /* Initialize a new card structure if need be */
      if (card_hostid == SLIC_HOSTID_DEFAULT) {
            card = kzalloc(sizeof(struct sliccard), GFP_KERNEL);
            if (card == NULL)
                  return -ENOMEM;

            card->next = slic_global.slic_card;
            slic_global.slic_card = card;
            card->busnumber = adapter->busnumber;
            card->slotnumber = adapter->slotnumber;

            /* Find an available cardnum */
            for (i = 0; i < SLIC_MAX_CARDS; i++) {
                  if (slic_global.cardnuminuse[i] == 0) {
                        slic_global.cardnuminuse[i] = 1;
                        card->cardnum = i;
                        break;
                  }
            }
            slic_global.num_slic_cards++;

            slic_debug_card_create(card);
      } else {
            /* Card exists, find the card this adapter belongs to */
            while (card) {
                  if (card->cardnum == card_hostid)
                        break;
                  card = card->next;
            }
      }

      ASSERT(card);
      if (!card)
            return STATUS_FAILURE;
      /* Put the adapter in the card's adapter list */
      ASSERT(card->adapter[adapter->port] == NULL);
      if (!card->adapter[adapter->port]) {
            card->adapter[adapter->port] = adapter;
            adapter->card = card;
      }

      card->card_size = 1;    /* one port per *logical* card */

      while (physcard) {
            for (i = 0; i < SLIC_MAX_PORTS; i++) {
                  if (!physcard->adapter[i])
                        continue;
                  else
                        break;
            }
            ASSERT(i != SLIC_MAX_PORTS);
            if (physcard->adapter[i]->slotnumber == adapter->slotnumber)
                  break;
            physcard = physcard->next;
      }
      if (!physcard) {
            /* no structure allocated for this physical card yet */
            physcard = kzalloc(sizeof(struct physcard), GFP_ATOMIC);
            ASSERT(physcard);

            physcard->next = slic_global.phys_card;
            slic_global.phys_card = physcard;
            physcard->adapters_allocd = 1;
      } else {
            physcard->adapters_allocd++;
      }
      /* Note - this is ZERO relative */
      adapter->physport = physcard->adapters_allocd - 1;

      ASSERT(physcard->adapter[adapter->physport] == NULL);
      physcard->adapter[adapter->physport] = adapter;
      adapter->physcard = physcard;

      return 0;
}

static void slic_soft_reset(struct adapter *adapter)
{
      if (adapter->card->state == CARD_UP) {
            slic_reg32_write(&adapter->slic_regs->slic_quiesce, 0, FLUSH);
            mdelay(1);
      }

      slic_reg32_write(&adapter->slic_regs->slic_reset, SLIC_RESET_MAGIC,
                   FLUSH);
      mdelay(1);
}

static void slic_config_set(struct adapter *adapter, bool linkchange)
{
      u32 value;
      u32 RcrReset;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;

      if (linkchange) {
            /* Setup MAC */
            slic_mac_config(adapter);
            RcrReset = GRCR_RESET;
      } else {
            slic_mac_address_config(adapter);
            RcrReset = 0;
      }

      if (adapter->linkduplex == LINK_FULLD) {
            /* setup xmtcfg */
            value = (GXCR_RESET |   /* Always reset     */
                   GXCR_XMTEN |     /* Enable transmit  */
                   GXCR_PAUSEEN);   /* Enable pause     */

            slic_reg32_write(&slic_regs->slic_wxcfg, value, FLUSH);

            /* Setup rcvcfg last */
            value = (RcrReset |     /* Reset, if linkchange */
                   GRCR_CTLEN |     /* Enable CTL frames    */
                   GRCR_ADDRAEN |   /* Address A enable     */
                   GRCR_RCVBAD |    /* Rcv bad frames       */
                   (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));
      } else {
            /* setup xmtcfg */
            value = (GXCR_RESET |   /* Always reset     */
                   GXCR_XMTEN);     /* Enable transmit  */

            slic_reg32_write(&slic_regs->slic_wxcfg, value, FLUSH);

            /* Setup rcvcfg last */
            value = (RcrReset |     /* Reset, if linkchange */
                   GRCR_ADDRAEN |   /* Address A enable     */
                   GRCR_RCVBAD |    /* Rcv bad frames       */
                   (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));
      }

      if (adapter->state != ADAPT_DOWN) {
            /* Only enable receive if we are restarting or running */
            value |= GRCR_RCVEN;
      }

      if (adapter->macopts & MAC_PROMISC)
            value |= GRCR_RCVALL;

      slic_reg32_write(&slic_regs->slic_wrcfg, value, FLUSH);
}

/*
 *  Turn off RCV and XMT, power down PHY
 */
static void slic_config_clear(struct adapter *adapter)
{
      u32 value;
      u32 phy_config;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;

      /* Setup xmtcfg */
      value = (GXCR_RESET |   /* Always reset */
             GXCR_PAUSEEN);   /* Enable pause */

      slic_reg32_write(&slic_regs->slic_wxcfg, value, FLUSH);

      value = (GRCR_RESET |   /* Always reset      */
             GRCR_CTLEN |     /* Enable CTL frames */
             GRCR_ADDRAEN |   /* Address A enable  */
             (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));

      slic_reg32_write(&slic_regs->slic_wrcfg, value, FLUSH);

      /* power down phy */
      phy_config = (MIICR_REG_PCR | (PCR_POWERDOWN));
      slic_reg32_write(&slic_regs->slic_wphy, phy_config, FLUSH);
}

static void slic_config_get(struct adapter *adapter, u32 config,
                                          u32 config_h)
{
      int status;

      status = slic_upr_request(adapter,
                          SLIC_UPR_RCONFIG,
                          (u32) config, (u32) config_h, 0, 0);
      ASSERT(status == 0);
}

static void slic_mac_address_config(struct adapter *adapter)
{
      u32 value;
      u32 value2;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;

      value = *(u32 *) &adapter->currmacaddr[2];
      value = ntohl(value);
      slic_reg32_write(&slic_regs->slic_wraddral, value, FLUSH);
      slic_reg32_write(&slic_regs->slic_wraddrbl, value, FLUSH);

      value2 = (u32) ((adapter->currmacaddr[0] << 8 |
                       adapter->currmacaddr[1]) & 0xFFFF);

      slic_reg32_write(&slic_regs->slic_wraddrah, value2, FLUSH);
      slic_reg32_write(&slic_regs->slic_wraddrbh, value2, FLUSH);

      /* Write our multicast mask out to the card.  This is done */
      /* here in addition to the slic_mcast_addr_set routine     */
      /* because ALL_MCAST may have been enabled or disabled     */
      slic_mcast_set_mask(adapter);
}

static void slic_mac_config(struct adapter *adapter)
{
      u32 value;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;

      /* Setup GMAC gaps */
      if (adapter->linkspeed == LINK_1000MB) {
            value = ((GMCR_GAPBB_1000 << GMCR_GAPBB_SHIFT) |
                   (GMCR_GAPR1_1000 << GMCR_GAPR1_SHIFT) |
                   (GMCR_GAPR2_1000 << GMCR_GAPR2_SHIFT));
      } else {
            value = ((GMCR_GAPBB_100 << GMCR_GAPBB_SHIFT) |
                   (GMCR_GAPR1_100 << GMCR_GAPR1_SHIFT) |
                   (GMCR_GAPR2_100 << GMCR_GAPR2_SHIFT));
      }

      /* enable GMII */
      if (adapter->linkspeed == LINK_1000MB)
            value |= GMCR_GBIT;

      /* enable fullduplex */
      if ((adapter->linkduplex == LINK_FULLD)
          || (adapter->macopts & MAC_LOOPBACK)) {
            value |= GMCR_FULLD;
      }

      /* write mac config */
      slic_reg32_write(&slic_regs->slic_wmcfg, value, FLUSH);

      /* setup mac addresses */
      slic_mac_address_config(adapter);
}

static bool slic_mac_filter(struct adapter *adapter,
                  struct ether_header *ether_frame)
{
      u32 opts = adapter->macopts;
      u32 *dhost4 = (u32 *)&ether_frame->ether_dhost[0];
      u16 *dhost2 = (u16 *)&ether_frame->ether_dhost[4];
      bool equaladdr;

      if (opts & MAC_PROMISC)
            return true;

      if ((*dhost4 == 0xFFFFFFFF) && (*dhost2 == 0xFFFF)) {
            if (opts & MAC_BCAST) {
                  adapter->rcv_broadcasts++;
                  return true;
            } else {
                  return false;
            }
      }

      if (ether_frame->ether_dhost[0] & 0x01) {
            if (opts & MAC_ALLMCAST) {
                  adapter->rcv_multicasts++;
                  adapter->stats.multicast++;
                  return true;
            }
            if (opts & MAC_MCAST) {
                  struct mcast_address *mcaddr = adapter->mcastaddrs;

                  while (mcaddr) {
                        ETHER_EQ_ADDR(mcaddr->address,
                                    ether_frame->ether_dhost,
                                    equaladdr);
                        if (equaladdr) {
                              adapter->rcv_multicasts++;
                              adapter->stats.multicast++;
                              return true;
                        }
                        mcaddr = mcaddr->next;
                  }
                  return false;
            } else {
                  return false;
            }
      }
      if (opts & MAC_DIRECTED) {
            adapter->rcv_unicasts++;
            return true;
      }
      return false;

}

static int slic_mac_set_address(struct net_device *dev, void *ptr)
{
      struct adapter *adapter = (struct adapter *)netdev_priv(dev);
      struct sockaddr *addr = ptr;

      if (netif_running(dev))
            return -EBUSY;
      if (!adapter)
            return -EBUSY;

      memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
      memcpy(adapter->currmacaddr, addr->sa_data, dev->addr_len);

      slic_config_set(adapter, true);
      return 0;
}

static void slic_timer_load_check(ulong cardaddr)
{
      struct sliccard *card = (struct sliccard *)cardaddr;
      struct adapter *adapter = card->master;
      u32 __iomem *intagg;
      u32 load = card->events;
      u32 level = 0;

      intagg = &adapter->slic_regs->slic_intagg;

      if ((adapter) && (adapter->state == ADAPT_UP) &&
          (card->state == CARD_UP) && (slic_global.dynamic_intagg)) {
            if (adapter->devid == SLIC_1GB_DEVICE_ID) {
                  if (adapter->linkspeed == LINK_1000MB)
                        level = 100;
                  else {
                        if (load > SLIC_LOAD_5)
                              level = SLIC_INTAGG_5;
                        else if (load > SLIC_LOAD_4)
                              level = SLIC_INTAGG_4;
                        else if (load > SLIC_LOAD_3)
                              level = SLIC_INTAGG_3;
                        else if (load > SLIC_LOAD_2)
                              level = SLIC_INTAGG_2;
                        else if (load > SLIC_LOAD_1)
                              level = SLIC_INTAGG_1;
                        else
                              level = SLIC_INTAGG_0;
                  }
                  if (card->loadlevel_current != level) {
                        card->loadlevel_current = level;
                        slic_reg32_write(intagg, level, FLUSH);
                  }
            } else {
                  if (load > SLIC_LOAD_5)
                        level = SLIC_INTAGG_5;
                  else if (load > SLIC_LOAD_4)
                        level = SLIC_INTAGG_4;
                  else if (load > SLIC_LOAD_3)
                        level = SLIC_INTAGG_3;
                  else if (load > SLIC_LOAD_2)
                        level = SLIC_INTAGG_2;
                  else if (load > SLIC_LOAD_1)
                        level = SLIC_INTAGG_1;
                  else
                        level = SLIC_INTAGG_0;
                  if (card->loadlevel_current != level) {
                        card->loadlevel_current = level;
                        slic_reg32_write(intagg, level, FLUSH);
                  }
            }
      }
      card->events = 0;
      card->loadtimer.expires = jiffies + (SLIC_LOADTIMER_PERIOD * HZ);
      add_timer(&card->loadtimer);
}

static void slic_assert_fail(void)
{
      u32 cpuid;
      u32 curr_pid;
      cpuid = smp_processor_id();
      curr_pid = current->pid;

      printk(KERN_ERR "%s CPU # %d ---- PID # %d\n",
             __func__, cpuid, curr_pid);
}

static int slic_upr_queue_request(struct adapter *adapter,
                     u32 upr_request,
                     u32 upr_data,
                     u32 upr_data_h,
                     u32 upr_buffer, u32 upr_buffer_h)
{
      struct slic_upr *upr;
      struct slic_upr *uprqueue;

      upr = kmalloc(sizeof(struct slic_upr), GFP_ATOMIC);
      if (!upr)
            return -ENOMEM;

      upr->adapter = adapter->port;
      upr->upr_request = upr_request;
      upr->upr_data = upr_data;
      upr->upr_buffer = upr_buffer;
      upr->upr_data_h = upr_data_h;
      upr->upr_buffer_h = upr_buffer_h;
      upr->next = NULL;
      if (adapter->upr_list) {
            uprqueue = adapter->upr_list;

            while (uprqueue->next)
                  uprqueue = uprqueue->next;
            uprqueue->next = upr;
      } else {
            adapter->upr_list = upr;
      }
      return STATUS_SUCCESS;
}

static int slic_upr_request(struct adapter *adapter,
                 u32 upr_request,
                 u32 upr_data,
                 u32 upr_data_h,
                 u32 upr_buffer, u32 upr_buffer_h)
{
      int status;

      spin_lock_irqsave(&adapter->upr_lock.lock, adapter->upr_lock.flags);
      status = slic_upr_queue_request(adapter,
                              upr_request,
                              upr_data,
                              upr_data_h, upr_buffer, upr_buffer_h);
      if (status != STATUS_SUCCESS) {
            spin_unlock_irqrestore(&adapter->upr_lock.lock,
                              adapter->upr_lock.flags);
            return status;
      }
      slic_upr_start(adapter);
      spin_unlock_irqrestore(&adapter->upr_lock.lock,
                        adapter->upr_lock.flags);
      return STATUS_PENDING;
}

static void slic_upr_request_complete(struct adapter *adapter, u32 isr)
{
      struct sliccard *card = adapter->card;
      struct slic_upr *upr;

      spin_lock_irqsave(&adapter->upr_lock.lock, adapter->upr_lock.flags);
      upr = adapter->upr_list;
      if (!upr) {
            ASSERT(0);
            spin_unlock_irqrestore(&adapter->upr_lock.lock,
                              adapter->upr_lock.flags);
            return;
      }
      adapter->upr_list = upr->next;
      upr->next = NULL;
      adapter->upr_busy = 0;
      ASSERT(adapter->port == upr->adapter);
      switch (upr->upr_request) {
      case SLIC_UPR_STATS:
            {
                  struct slic_stats *slicstats =
                      (struct slic_stats *) &adapter->pshmem->inicstats;
                  struct slic_stats *newstats = slicstats;
                  struct slic_stats  *old = &adapter->inicstats_prev;
                  struct slicnet_stats *stst = &adapter->slic_stats;

                  if (isr & ISR_UPCERR) {
                        dev_err(&adapter->netdev->dev,
                              "SLIC_UPR_STATS command failed isr[%x]\n",
                              isr);

                        break;
                  }
                  UPDATE_STATS_GB(stst->tcp.xmit_tcp_segs,
                              newstats->xmit_tcp_segs_gb,
                              old->xmit_tcp_segs_gb);

                  UPDATE_STATS_GB(stst->tcp.xmit_tcp_bytes,
                              newstats->xmit_tcp_bytes_gb,
                              old->xmit_tcp_bytes_gb);

                  UPDATE_STATS_GB(stst->tcp.rcv_tcp_segs,
                              newstats->rcv_tcp_segs_gb,
                              old->rcv_tcp_segs_gb);

                  UPDATE_STATS_GB(stst->tcp.rcv_tcp_bytes,
                              newstats->rcv_tcp_bytes_gb,
                              old->rcv_tcp_bytes_gb);

                  UPDATE_STATS_GB(stst->iface.xmt_bytes,
                              newstats->xmit_bytes_gb,
                              old->xmit_bytes_gb);

                  UPDATE_STATS_GB(stst->iface.xmt_ucast,
                              newstats->xmit_unicasts_gb,
                              old->xmit_unicasts_gb);

                  UPDATE_STATS_GB(stst->iface.rcv_bytes,
                              newstats->rcv_bytes_gb,
                              old->rcv_bytes_gb);

                  UPDATE_STATS_GB(stst->iface.rcv_ucast,
                              newstats->rcv_unicasts_gb,
                              old->rcv_unicasts_gb);

                  UPDATE_STATS_GB(stst->iface.xmt_errors,
                              newstats->xmit_collisions_gb,
                              old->xmit_collisions_gb);

                  UPDATE_STATS_GB(stst->iface.xmt_errors,
                              newstats->xmit_excess_collisions_gb,
                              old->xmit_excess_collisions_gb);

                  UPDATE_STATS_GB(stst->iface.xmt_errors,
                              newstats->xmit_other_error_gb,
                              old->xmit_other_error_gb);

                  UPDATE_STATS_GB(stst->iface.rcv_errors,
                              newstats->rcv_other_error_gb,
                              old->rcv_other_error_gb);

                  UPDATE_STATS_GB(stst->iface.rcv_discards,
                              newstats->rcv_drops_gb,
                              old->rcv_drops_gb);

                  if (newstats->rcv_drops_gb > old->rcv_drops_gb) {
                        adapter->rcv_drops +=
                            (newstats->rcv_drops_gb -
                             old->rcv_drops_gb);
                  }
                  memcpy(old, newstats, sizeof(struct slic_stats));
                  break;
            }
      case SLIC_UPR_RLSR:
            slic_link_upr_complete(adapter, isr);
            break;
      case SLIC_UPR_RCONFIG:
            break;
      case SLIC_UPR_RPHY:
            ASSERT(0);
            break;
      case SLIC_UPR_ENLB:
            ASSERT(0);
            break;
      case SLIC_UPR_ENCT:
            ASSERT(0);
            break;
      case SLIC_UPR_PDWN:
            ASSERT(0);
            break;
      case SLIC_UPR_PING:
            card->pingstatus |= (isr & ISR_PINGDSMASK);
            break;
      default:
            ASSERT(0);
      }
      kfree(upr);
      slic_upr_start(adapter);
      spin_unlock_irqrestore(&adapter->upr_lock.lock,
                        adapter->upr_lock.flags);
}

static void slic_upr_start(struct adapter *adapter)
{
      struct slic_upr *upr;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;
/*
    char * ptr1;
    char * ptr2;
    uint cmdoffset;
*/
      upr = adapter->upr_list;
      if (!upr)
            return;
      if (adapter->upr_busy)
            return;
      adapter->upr_busy = 1;

      switch (upr->upr_request) {
      case SLIC_UPR_STATS:
            if (upr->upr_data_h == 0) {
                  slic_reg32_write(&slic_regs->slic_stats, upr->upr_data,
                               FLUSH);
            } else {
                  slic_reg64_write(adapter, &slic_regs->slic_stats64,
                               upr->upr_data,
                               &slic_regs->slic_addr_upper,
                               upr->upr_data_h, FLUSH);
            }
            break;

      case SLIC_UPR_RLSR:
            slic_reg64_write(adapter, &slic_regs->slic_rlsr, upr->upr_data,
                         &slic_regs->slic_addr_upper, upr->upr_data_h,
                         FLUSH);
            break;

      case SLIC_UPR_RCONFIG:
            slic_reg64_write(adapter, &slic_regs->slic_rconfig,
                         upr->upr_data, &slic_regs->slic_addr_upper,
                         upr->upr_data_h, FLUSH);
            break;
      case SLIC_UPR_PING:
            slic_reg32_write(&slic_regs->slic_ping, 1, FLUSH);
            break;
      default:
            ASSERT(0);
      }
}

static void slic_link_upr_complete(struct adapter *adapter, u32 isr)
{
      u32 linkstatus = adapter->pshmem->linkstatus;
      uint linkup;
      unsigned char linkspeed;
      unsigned char linkduplex;

      if ((isr & ISR_UPCERR) || (isr & ISR_UPCBSY)) {
            struct slic_shmem *pshmem;

            pshmem = (struct slic_shmem *)adapter->phys_shmem;
#if defined(CONFIG_X86_64)
            slic_upr_queue_request(adapter,
                               SLIC_UPR_RLSR,
                               SLIC_GET_ADDR_LOW(&pshmem->linkstatus),
                               SLIC_GET_ADDR_HIGH(&pshmem->linkstatus),
                               0, 0);
#elif defined(CONFIG_X86)
            slic_upr_queue_request(adapter,
                               SLIC_UPR_RLSR,
                               (u32) &pshmem->linkstatus,
                               SLIC_GET_ADDR_HIGH(pshmem), 0, 0);
#else
            Stop Compilation;
#endif
            return;
      }
      if (adapter->state != ADAPT_UP)
            return;

      ASSERT((adapter->devid == SLIC_1GB_DEVICE_ID)
             || (adapter->devid == SLIC_2GB_DEVICE_ID));

      linkup = linkstatus & GIG_LINKUP ? LINK_UP : LINK_DOWN;
      if (linkstatus & GIG_SPEED_1000)
            linkspeed = LINK_1000MB;
      else if (linkstatus & GIG_SPEED_100)
            linkspeed = LINK_100MB;
      else
            linkspeed = LINK_10MB;

      if (linkstatus & GIG_FULLDUPLEX)
            linkduplex = LINK_FULLD;
      else
            linkduplex = LINK_HALFD;

      if ((adapter->linkstate == LINK_DOWN) && (linkup == LINK_DOWN))
            return;

      /* link up event, but nothing has changed */
      if ((adapter->linkstate == LINK_UP) &&
          (linkup == LINK_UP) &&
          (adapter->linkspeed == linkspeed) &&
          (adapter->linkduplex == linkduplex))
            return;

      /* link has changed at this point */

      /* link has gone from up to down */
      if (linkup == LINK_DOWN) {
            adapter->linkstate = LINK_DOWN;
            return;
      }

      /* link has gone from down to up */
      adapter->linkspeed = linkspeed;
      adapter->linkduplex = linkduplex;

      if (adapter->linkstate != LINK_UP) {
            /* setup the mac */
            slic_config_set(adapter, true);
            adapter->linkstate = LINK_UP;
            netif_start_queue(adapter->netdev);
      }
}

/*
 *  this is here to checksum the eeprom, there is some ucode bug
 *  which prevens us from using the ucode result.
 *  remove this once ucode is fixed.
 */
static ushort slic_eeprom_cksum(char *m, int len)
{
#define ADDCARRY(x)  (x > 65535 ? x -= 65535 : x)
#define REDUCE {l_util.l = sum; sum = l_util.s[0] + l_util.s[1]; ADDCARRY(sum);\
            }

      u16 *w;
      u32 sum = 0;
      u32 byte_swapped = 0;
      u32 w_int;

      union {
            char c[2];
            ushort s;
      } s_util;

      union {
            ushort s[2];
            int l;
      } l_util;

      l_util.l = 0;
      s_util.s = 0;

      w = (u16 *)m;
#ifdef CONFIG_X86_64
      w_int = (u32) ((ulong) w & 0x00000000FFFFFFFF);
#else
      w_int = (u32) (w);
#endif
      if ((1 & w_int) && (len > 0)) {
            REDUCE;
            sum <<= 8;
            s_util.c[0] = *(unsigned char *)w;
            w = (u16 *)((char *)w + 1);
            len--;
            byte_swapped = 1;
      }

      /* Unroll the loop to make overhead from branches &c small. */
      while ((len -= 32) >= 0) {
            sum += w[0];
            sum += w[1];
            sum += w[2];
            sum += w[3];
            sum += w[4];
            sum += w[5];
            sum += w[6];
            sum += w[7];
            sum += w[8];
            sum += w[9];
            sum += w[10];
            sum += w[11];
            sum += w[12];
            sum += w[13];
            sum += w[14];
            sum += w[15];
            w = (u16 *)((ulong) w + 16);  /* verify */
      }
      len += 32;
      while ((len -= 8) >= 0) {
            sum += w[0];
            sum += w[1];
            sum += w[2];
            sum += w[3];
            w = (u16 *)((ulong) w + 4);   /* verify */
      }
      len += 8;
      if (len != 0 || byte_swapped != 0) {
            REDUCE;
            while ((len -= 2) >= 0)
                  sum += *w++;      /* verify */
            if (byte_swapped) {
                  REDUCE;
                  sum <<= 8;
                  byte_swapped = 0;
                  if (len == -1) {
                        s_util.c[1] = *(char *) w;
                        sum += s_util.s;
                        len = 0;
                  } else {
                        len = -1;
                  }

            } else if (len == -1) {
                  s_util.c[0] = *(char *) w;
            }

            if (len == -1) {
                  s_util.c[1] = 0;
                  sum += s_util.s;
            }
      }
      REDUCE;
      return (ushort) sum;
}

static int slic_rspqueue_init(struct adapter *adapter)
{
      int i;
      struct slic_rspqueue *rspq = &adapter->rspqueue;
      __iomem struct slic_regs *slic_regs = adapter->slic_regs;
      u32 paddrh = 0;

      ASSERT(adapter->state == ADAPT_DOWN);
      memset(rspq, 0, sizeof(struct slic_rspqueue));

      rspq->num_pages = SLIC_RSPQ_PAGES_GB;

      for (i = 0; i < rspq->num_pages; i++) {
            rspq->vaddr[i] = pci_alloc_consistent(adapter->pcidev,
                                          PAGE_SIZE,
                                          &rspq->paddr[i]);
            if (!rspq->vaddr[i]) {
                  dev_err(&adapter->pcidev->dev,
                        "pci_alloc_consistent failed\n");
                  slic_rspqueue_free(adapter);
                  return STATUS_FAILURE;
            }
#ifndef CONFIG_X86_64
            ASSERT(((u32) rspq->vaddr[i] & 0xFFFFF000) ==
                   (u32) rspq->vaddr[i]);
            ASSERT(((u32) rspq->paddr[i] & 0xFFFFF000) ==
                   (u32) rspq->paddr[i]);
#endif
            memset(rspq->vaddr[i], 0, PAGE_SIZE);

            if (paddrh == 0) {
                  slic_reg32_write(&slic_regs->slic_rbar,
                        (rspq->paddr[i] | SLIC_RSPQ_BUFSINPAGE),
                        DONT_FLUSH);
            } else {
                  slic_reg64_write(adapter, &slic_regs->slic_rbar64,
                        (rspq->paddr[i] | SLIC_RSPQ_BUFSINPAGE),
                        &slic_regs->slic_addr_upper,
                        paddrh, DONT_FLUSH);
            }
      }
      rspq->offset = 0;
      rspq->pageindex = 0;
      rspq->rspbuf = (struct slic_rspbuf *)rspq->vaddr[0];
      return STATUS_SUCCESS;
}

static void slic_rspqueue_free(struct adapter *adapter)
{
      int i;
      struct slic_rspqueue *rspq = &adapter->rspqueue;

      for (i = 0; i < rspq->num_pages; i++) {
            if (rspq->vaddr[i]) {
                  pci_free_consistent(adapter->pcidev, PAGE_SIZE,
                                  rspq->vaddr[i], rspq->paddr[i]);
            }
            rspq->vaddr[i] = NULL;
            rspq->paddr[i] = 0;
      }
      rspq->offset = 0;
      rspq->pageindex = 0;
      rspq->rspbuf = NULL;
}

static struct slic_rspbuf *slic_rspqueue_getnext(struct adapter *adapter)
{
      struct slic_rspqueue *rspq = &adapter->rspqueue;
      struct slic_rspbuf *buf;

      if (!(rspq->rspbuf->status))
            return NULL;

      buf = rspq->rspbuf;
#ifndef CONFIG_X86_64
      ASSERT((buf->status & 0xFFFFFFE0) == 0);
#endif
      ASSERT(buf->hosthandle);
      if (++rspq->offset < SLIC_RSPQ_BUFSINPAGE) {
            rspq->rspbuf++;
#ifndef CONFIG_X86_64
            ASSERT(((u32) rspq->rspbuf & 0xFFFFFFE0) ==
                   (u32) rspq->rspbuf);
#endif
      } else {
            ASSERT(rspq->offset == SLIC_RSPQ_BUFSINPAGE);
            slic_reg64_write(adapter, &adapter->slic_regs->slic_rbar64,
                  (rspq->paddr[rspq->pageindex] | SLIC_RSPQ_BUFSINPAGE),
                  &adapter->slic_regs->slic_addr_upper, 0, DONT_FLUSH);
            rspq->pageindex = (++rspq->pageindex) % rspq->num_pages;
            rspq->offset = 0;
            rspq->rspbuf = (struct slic_rspbuf *)
                                    rspq->vaddr[rspq->pageindex];
#ifndef CONFIG_X86_64
            ASSERT(((u32) rspq->rspbuf & 0xFFFFF000) ==
                   (u32) rspq->rspbuf);
#endif
      }
#ifndef CONFIG_X86_64
      ASSERT(((u32) buf & 0xFFFFFFE0) == (u32) buf);
#endif
      return buf;
}

static void slic_cmdqmem_init(struct adapter *adapter)
{
      struct slic_cmdqmem *cmdqmem = &adapter->cmdqmem;

      memset(cmdqmem, 0, sizeof(struct slic_cmdqmem));
}

static void slic_cmdqmem_free(struct adapter *adapter)
{
      struct slic_cmdqmem *cmdqmem = &adapter->cmdqmem;
      int i;

      for (i = 0; i < SLIC_CMDQ_MAXPAGES; i++) {
            if (cmdqmem->pages[i]) {
                  pci_free_consistent(adapter->pcidev,
                                  PAGE_SIZE,
                                  (void *) cmdqmem->pages[i],
                                  cmdqmem->dma_pages[i]);
            }
      }
      memset(cmdqmem, 0, sizeof(struct slic_cmdqmem));
}

static u32 *slic_cmdqmem_addpage(struct adapter *adapter)
{
      struct slic_cmdqmem *cmdqmem = &adapter->cmdqmem;
      u32 *pageaddr;

      if (cmdqmem->pagecnt >= SLIC_CMDQ_MAXPAGES)
            return NULL;
      pageaddr = pci_alloc_consistent(adapter->pcidev,
                              PAGE_SIZE,
                              &cmdqmem->dma_pages[cmdqmem->pagecnt]);
      if (!pageaddr)
            return NULL;
#ifndef CONFIG_X86_64
      ASSERT(((u32) pageaddr & 0xFFFFF000) == (u32) pageaddr);
#endif
      cmdqmem->pages[cmdqmem->pagecnt] = pageaddr;
      cmdqmem->pagecnt++;
      return pageaddr;
}

static int slic_cmdq_init(struct adapter *adapter)
{
      int i;
      u32 *pageaddr;

      ASSERT(adapter->state == ADAPT_DOWN);
      memset(&adapter->cmdq_all, 0, sizeof(struct slic_cmdqueue));
      memset(&adapter->cmdq_free, 0, sizeof(struct slic_cmdqueue));
      memset(&adapter->cmdq_done, 0, sizeof(struct slic_cmdqueue));
      spin_lock_init(&adapter->cmdq_all.lock.lock);
      spin_lock_init(&adapter->cmdq_free.lock.lock);
      spin_lock_init(&adapter->cmdq_done.lock.lock);
      slic_cmdqmem_init(adapter);
      adapter->slic_handle_ix = 1;
      for (i = 0; i < SLIC_CMDQ_INITPAGES; i++) {
            pageaddr = slic_cmdqmem_addpage(adapter);
#ifndef CONFIG_X86_64
            ASSERT(((u32) pageaddr & 0xFFFFF000) == (u32) pageaddr);
#endif
            if (!pageaddr) {
                  slic_cmdq_free(adapter);
                  return STATUS_FAILURE;
            }
            slic_cmdq_addcmdpage(adapter, pageaddr);
      }
      adapter->slic_handle_ix = 1;

      return STATUS_SUCCESS;
}

static void slic_cmdq_free(struct adapter *adapter)
{
      struct slic_hostcmd *cmd;

      cmd = adapter->cmdq_all.head;
      while (cmd) {
            if (cmd->busy) {
                  struct sk_buff *tempskb;

                  tempskb = cmd->skb;
                  if (tempskb) {
                        cmd->skb = NULL;
                        dev_kfree_skb_irq(tempskb);
                  }
            }
            cmd = cmd->next_all;
      }
      memset(&adapter->cmdq_all, 0, sizeof(struct slic_cmdqueue));
      memset(&adapter->cmdq_free, 0, sizeof(struct slic_cmdqueue));
      memset(&adapter->cmdq_done, 0, sizeof(struct slic_cmdqueue));
      slic_cmdqmem_free(adapter);
}

static void slic_cmdq_reset(struct adapter *adapter)
{
      struct slic_hostcmd *hcmd;
      struct sk_buff *skb;
      u32 outstanding;

      spin_lock_irqsave(&adapter->cmdq_free.lock.lock,
                  adapter->cmdq_free.lock.flags);
      spin_lock_irqsave(&adapter->cmdq_done.lock.lock,
                  adapter->cmdq_done.lock.flags);
      outstanding = adapter->cmdq_all.count - adapter->cmdq_done.count;
      outstanding -= adapter->cmdq_free.count;
      hcmd = adapter->cmdq_all.head;
      while (hcmd) {
            if (hcmd->busy) {
                  skb = hcmd->skb;
                  ASSERT(skb);
                  hcmd->busy = 0;
                  hcmd->skb = NULL;
                  dev_kfree_skb_irq(skb);
            }
            hcmd = hcmd->next_all;
      }
      adapter->cmdq_free.count = 0;
      adapter->cmdq_free.head = NULL;
      adapter->cmdq_free.tail = NULL;
      adapter->cmdq_done.count = 0;
      adapter->cmdq_done.head = NULL;
      adapter->cmdq_done.tail = NULL;
      adapter->cmdq_free.head = adapter->cmdq_all.head;
      hcmd = adapter->cmdq_all.head;
      while (hcmd) {
            adapter->cmdq_free.count++;
            hcmd->next = hcmd->next_all;
            hcmd = hcmd->next_all;
      }
      if (adapter->cmdq_free.count != adapter->cmdq_all.count) {
            dev_err(&adapter->netdev->dev,
                  "free_count %d != all count %d\n",
                  adapter->cmdq_free.count, adapter->cmdq_all.count);
      }
      spin_unlock_irqrestore(&adapter->cmdq_done.lock.lock,
                        adapter->cmdq_done.lock.flags);
      spin_unlock_irqrestore(&adapter->cmdq_free.lock.lock,
                        adapter->cmdq_free.lock.flags);
}

static void slic_cmdq_addcmdpage(struct adapter *adapter, u32 *page)
{
      struct slic_hostcmd *cmd;
      struct slic_hostcmd *prev;
      struct slic_hostcmd *tail;
      struct slic_cmdqueue *cmdq;
      int cmdcnt;
      void *cmdaddr;
      ulong phys_addr;
      u32 phys_addrl;
      u32 phys_addrh;
      struct slic_handle *pslic_handle;

      cmdaddr = page;
      cmd = (struct slic_hostcmd *)cmdaddr;
      cmdcnt = 0;

      phys_addr = virt_to_bus((void *)page);
      phys_addrl = SLIC_GET_ADDR_LOW(phys_addr);
      phys_addrh = SLIC_GET_ADDR_HIGH(phys_addr);

      prev = NULL;
      tail = cmd;
      while ((cmdcnt < SLIC_CMDQ_CMDSINPAGE) &&
             (adapter->slic_handle_ix < 256)) {
            /* Allocate and initialize a SLIC_HANDLE for this command */
            SLIC_GET_SLIC_HANDLE(adapter, pslic_handle);
            if (pslic_handle == NULL)
                  ASSERT(0);
            ASSERT(pslic_handle ==
                   &adapter->slic_handles[pslic_handle->token.
                                    handle_index]);
            pslic_handle->type = SLIC_HANDLE_CMD;
            pslic_handle->address = (void *) cmd;
            pslic_handle->offset = (ushort) adapter->slic_handle_ix++;
            pslic_handle->other_handle = NULL;
            pslic_handle->next = NULL;

            cmd->pslic_handle = pslic_handle;
            cmd->cmd64.hosthandle = pslic_handle->token.handle_token;
            cmd->busy = false;
            cmd->paddrl = phys_addrl;
            cmd->paddrh = phys_addrh;
            cmd->next_all = prev;
            cmd->next = prev;
            prev = cmd;
            phys_addrl += SLIC_HOSTCMD_SIZE;
            cmdaddr += SLIC_HOSTCMD_SIZE;

            cmd = (struct slic_hostcmd *)cmdaddr;
            cmdcnt++;
      }

      cmdq = &adapter->cmdq_all;
      cmdq->count += cmdcnt;  /*  SLIC_CMDQ_CMDSINPAGE;   mooktodo */
      tail->next_all = cmdq->head;
      cmdq->head = prev;
      cmdq = &adapter->cmdq_free;
      spin_lock_irqsave(&cmdq->lock.lock, cmdq->lock.flags);
      cmdq->count += cmdcnt;  /*  SLIC_CMDQ_CMDSINPAGE;   mooktodo */
      tail->next = cmdq->head;
      cmdq->head = prev;
      spin_unlock_irqrestore(&cmdq->lock.lock, cmdq->lock.flags);
}

static struct slic_hostcmd *slic_cmdq_getfree(struct adapter *adapter)
{
      struct slic_cmdqueue *cmdq = &adapter->cmdq_free;
      struct slic_hostcmd *cmd = NULL;

lock_and_retry:
      spin_lock_irqsave(&cmdq->lock.lock, cmdq->lock.flags);
retry:
      cmd = cmdq->head;
      if (cmd) {
            cmdq->head = cmd->next;
            cmdq->count--;
            spin_unlock_irqrestore(&cmdq->lock.lock, cmdq->lock.flags);
      } else {
            slic_cmdq_getdone(adapter);
            cmd = cmdq->head;
            if (cmd) {
                  goto retry;
            } else {
                  u32 *pageaddr;

                  spin_unlock_irqrestore(&cmdq->lock.lock,
                                    cmdq->lock.flags);
                  pageaddr = slic_cmdqmem_addpage(adapter);
                  if (pageaddr) {
                        slic_cmdq_addcmdpage(adapter, pageaddr);
                        goto lock_and_retry;
                  }
            }
      }
      return cmd;
}

static void slic_cmdq_getdone(struct adapter *adapter)
{
      struct slic_cmdqueue *done_cmdq = &adapter->cmdq_done;
      struct slic_cmdqueue *free_cmdq = &adapter->cmdq_free;

      ASSERT(free_cmdq->head == NULL);
      spin_lock_irqsave(&done_cmdq->lock.lock, done_cmdq->lock.flags);

      free_cmdq->head = done_cmdq->head;
      free_cmdq->count = done_cmdq->count;
      done_cmdq->head = NULL;
      done_cmdq->tail = NULL;
      done_cmdq->count = 0;
      spin_unlock_irqrestore(&done_cmdq->lock.lock, done_cmdq->lock.flags);
}

static void slic_cmdq_putdone_irq(struct adapter *adapter,
                        struct slic_hostcmd *cmd)
{
      struct slic_cmdqueue *cmdq = &adapter->cmdq_done;

      spin_lock(&cmdq->lock.lock);
      cmd->busy = 0;
      cmd->next = cmdq->head;
      cmdq->head = cmd;
      cmdq->count++;
      if ((adapter->xmitq_full) && (cmdq->count > 10))
            netif_wake_queue(adapter->netdev);
      spin_unlock(&cmdq->lock.lock);
}

static int slic_rcvqueue_init(struct adapter *adapter)
{
      int i, count;
      struct slic_rcvqueue *rcvq = &adapter->rcvqueue;

      ASSERT(adapter->state == ADAPT_DOWN);
      rcvq->tail = NULL;
      rcvq->head = NULL;
      rcvq->size = SLIC_RCVQ_ENTRIES;
      rcvq->errors = 0;
      rcvq->count = 0;
      i = (SLIC_RCVQ_ENTRIES / SLIC_RCVQ_FILLENTRIES);
      count = 0;
      while (i) {
            count += slic_rcvqueue_fill(adapter);
            i--;
      }
      if (rcvq->count < SLIC_RCVQ_MINENTRIES) {
            slic_rcvqueue_free(adapter);
            return STATUS_FAILURE;
      }
      return STATUS_SUCCESS;
}

static void slic_rcvqueue_free(struct adapter *adapter)
{
      struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
      struct sk_buff *skb;

      while (rcvq->head) {
            skb = rcvq->head;
            rcvq->head = rcvq->head->next;
            dev_kfree_skb(skb);
      }
      rcvq->tail = NULL;
      rcvq->head = NULL;
      rcvq->count = 0;
}

static struct sk_buff *slic_rcvqueue_getnext(struct adapter *adapter)
{
      struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
      struct sk_buff *skb;
      struct slic_rcvbuf *rcvbuf;
      int count;

      if (rcvq->count) {
            skb = rcvq->head;
            rcvbuf = (struct slic_rcvbuf *)skb->head;
            ASSERT(rcvbuf);

            if (rcvbuf->status & IRHDDR_SVALID) {
                  rcvq->head = rcvq->head->next;
                  skb->next = NULL;
                  rcvq->count--;
            } else {
                  skb = NULL;
            }
      } else {
            dev_err(&adapter->netdev->dev,
                  "RcvQ Empty!! rcvq[%p] count[%x]\n", rcvq, rcvq->count);
            skb = NULL;
      }
      while (rcvq->count < SLIC_RCVQ_FILLTHRESH) {
            count = slic_rcvqueue_fill(adapter);
            if (!count)
                  break;
      }
      if (skb)
            rcvq->errors = 0;
      return skb;
}

static int slic_rcvqueue_fill(struct adapter *adapter)
{
      void *paddr;
      u32 paddrl;
      u32 paddrh;
      struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
      int i = 0;
      struct device *dev = &adapter->netdev->dev;

      while (i < SLIC_RCVQ_FILLENTRIES) {
            struct slic_rcvbuf *rcvbuf;
            struct sk_buff *skb;
#ifdef KLUDGE_FOR_4GB_BOUNDARY
retry_rcvqfill:
#endif
            skb = alloc_skb(SLIC_RCVQ_RCVBUFSIZE, GFP_ATOMIC);
            if (skb) {
                  paddr = (void *)pci_map_single(adapter->pcidev,
                                            skb->data,
                                            SLIC_RCVQ_RCVBUFSIZE,
                                            PCI_DMA_FROMDEVICE);
                  paddrl = SLIC_GET_ADDR_LOW(paddr);
                  paddrh = SLIC_GET_ADDR_HIGH(paddr);

                  skb->len = SLIC_RCVBUF_HEADSIZE;
                  rcvbuf = (struct slic_rcvbuf *)skb->head;
                  rcvbuf->status = 0;
                  skb->next = NULL;
#ifdef KLUDGE_FOR_4GB_BOUNDARY
                  if (paddrl == 0) {
                        dev_err(dev, "%s: LOW 32bits PHYSICAL ADDRESS == 0\n",
                              __func__);
                        dev_err(dev, "skb[%p] PROBLEM\n", skb);
                        dev_err(dev, "         skbdata[%p]\n", skb->data);
                        dev_err(dev, "         skblen[%x]\n", skb->len);
                        dev_err(dev, "         paddr[%p]\n", paddr);
                        dev_err(dev, "         paddrl[%x]\n", paddrl);
                        dev_err(dev, "         paddrh[%x]\n", paddrh);
                        dev_err(dev, "         rcvq->head[%p]\n", rcvq->head);
                        dev_err(dev, "         rcvq->tail[%p]\n", rcvq->tail);
                        dev_err(dev, "         rcvq->count[%x]\n", rcvq->count);
                        dev_err(dev, "SKIP THIS SKB!!!!!!!!\n");
                        goto retry_rcvqfill;
                  }
#else
                  if (paddrl == 0) {
                        dev_err(dev, "%s: LOW 32bits PHYSICAL ADDRESS == 0\n",
                              __func__);
                        dev_err(dev, "skb[%p] PROBLEM\n", skb);
                        dev_err(dev, "         skbdata[%p]\n", skb->data);
                        dev_err(dev, "         skblen[%x]\n", skb->len);
                        dev_err(dev, "         paddr[%p]\n", paddr);
                        dev_err(dev, "         paddrl[%x]\n", paddrl);
                        dev_err(dev, "         paddrh[%x]\n", paddrh);
                        dev_err(dev, "         rcvq->head[%p]\n", rcvq->head);
                        dev_err(dev, "         rcvq->tail[%p]\n", rcvq->tail);
                        dev_err(dev, "         rcvq->count[%x]\n", rcvq->count);
                        dev_err(dev, "GIVE TO CARD ANYWAY\n");
                  }
#endif
                  if (paddrh == 0) {
                        slic_reg32_write(&adapter->slic_regs->slic_hbar,
                                     (u32)paddrl, DONT_FLUSH);
                  } else {
                        slic_reg64_write(adapter,
                              &adapter->slic_regs->slic_hbar64,
                              paddrl,
                              &adapter->slic_regs->slic_addr_upper,
                              paddrh, DONT_FLUSH);
                  }
                  if (rcvq->head)
                        rcvq->tail->next = skb;
                  else
                        rcvq->head = skb;
                  rcvq->tail = skb;
                  rcvq->count++;
                  i++;
            } else {
                  dev_err(&adapter->netdev->dev,
                        "slic_rcvqueue_fill could only get [%d] skbuffs\n",
                        i);
                  break;
            }
      }
      return i;
}

static u32 slic_rcvqueue_reinsert(struct adapter *adapter, struct sk_buff *skb)
{
      struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
      void *paddr;
      u32 paddrl;
      u32 paddrh;
      struct slic_rcvbuf *rcvbuf = (struct slic_rcvbuf *)skb->head;
      struct device *dev;

      ASSERT(skb->len == SLIC_RCVBUF_HEADSIZE);

      paddr = (void *)pci_map_single(adapter->pcidev, skb->head,
                          SLIC_RCVQ_RCVBUFSIZE, PCI_DMA_FROMDEVICE);
      rcvbuf->status = 0;
      skb->next = NULL;

      paddrl = SLIC_GET_ADDR_LOW(paddr);
      paddrh = SLIC_GET_ADDR_HIGH(paddr);

      if (paddrl == 0) {
            dev = &adapter->netdev->dev;
            dev_err(dev, "%s: LOW 32bits PHYSICAL ADDRESS == 0\n",
                  __func__);
            dev_err(dev, "skb[%p] PROBLEM\n", skb);
            dev_err(dev, "         skbdata[%p]\n", skb->data);
            dev_err(dev, "         skblen[%x]\n", skb->len);
            dev_err(dev, "         paddr[%p]\n", paddr);
            dev_err(dev, "         paddrl[%x]\n", paddrl);
            dev_err(dev, "         paddrh[%x]\n", paddrh);
            dev_err(dev, "         rcvq->head[%p]\n", rcvq->head);
            dev_err(dev, "         rcvq->tail[%p]\n", rcvq->tail);
            dev_err(dev, "         rcvq->count[%x]\n", rcvq->count);
      }
      if (paddrh == 0) {
            slic_reg32_write(&adapter->slic_regs->slic_hbar, (u32)paddrl,
                         DONT_FLUSH);
      } else {
            slic_reg64_write(adapter, &adapter->slic_regs->slic_hbar64,
                         paddrl, &adapter->slic_regs->slic_addr_upper,
                         paddrh, DONT_FLUSH);
      }
      if (rcvq->head)
            rcvq->tail->next = skb;
      else
            rcvq->head = skb;
      rcvq->tail = skb;
      rcvq->count++;
      return rcvq->count;
}

static int slic_debug_card_show(struct seq_file *seq, void *v)
{
#ifdef MOOKTODO
      int i;
      struct sliccard *card = seq->private;
      struct slic_config *config = &card->config;
      unsigned char *fru = (unsigned char *)(&card->config.atk_fru);
      unsigned char *oemfru = (unsigned char *)(&card->config.OemFru);
#endif

      seq_printf(seq, "driver_version           : %s\n", slic_proc_version);
      seq_printf(seq, "Microcode versions:           \n");
      seq_printf(seq, "    Gigabit (gb)         : %s %s\n",
                MOJAVE_UCODE_VERS_STRING, MOJAVE_UCODE_VERS_DATE);
      seq_printf(seq, "    Gigabit Receiver     : %s %s\n",
                GB_RCVUCODE_VERS_STRING, GB_RCVUCODE_VERS_DATE);
      seq_printf(seq, "Vendor                   : %s\n", slic_vendor);
      seq_printf(seq, "Product Name             : %s\n", slic_product_name);
#ifdef MOOKTODO
      seq_printf(seq, "VendorId                 : %4.4X\n",
                config->VendorId);
      seq_printf(seq, "DeviceId                 : %4.4X\n",
                config->DeviceId);
      seq_printf(seq, "RevisionId               : %2.2x\n",
                config->RevisionId);
      seq_printf(seq, "Bus    #                 : %d\n", card->busnumber);
      seq_printf(seq, "Device #                 : %d\n", card->slotnumber);
      seq_printf(seq, "Interfaces               : %d\n", card->card_size);
      seq_printf(seq, "     Initialized         : %d\n",
                card->adapters_activated);
      seq_printf(seq, "     Allocated           : %d\n",
                card->adapters_allocated);
      ASSERT(card->card_size <= SLIC_NBR_MACS);
      for (i = 0; i < card->card_size; i++) {
            seq_printf(seq,
                     "     MAC%d : %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
                     i, config->macinfo[i].macaddrA[0],
                     config->macinfo[i].macaddrA[1],
                     config->macinfo[i].macaddrA[2],
                     config->macinfo[i].macaddrA[3],
                     config->macinfo[i].macaddrA[4],
                     config->macinfo[i].macaddrA[5]);
      }
      seq_printf(seq, "     IF  Init State Duplex/Speed irq\n");
      seq_printf(seq, "     -------------------------------\n");
      for (i = 0; i < card->adapters_allocated; i++) {
            struct adapter *adapter;

            adapter = card->adapter[i];
            if (adapter) {
                  seq_printf(seq,
                            "     %d   %d   %s  %s  %s    0x%X\n",
                            adapter->physport, adapter->state,
                            SLIC_LINKSTATE(adapter->linkstate),
                            SLIC_DUPLEX(adapter->linkduplex),
                            SLIC_SPEED(adapter->linkspeed),
                            (uint) adapter->irq);
            }
      }
      seq_printf(seq, "Generation #             : %4.4X\n", card->gennumber);
      seq_printf(seq, "RcvQ max entries         : %4.4X\n",
                SLIC_RCVQ_ENTRIES);
      seq_printf(seq, "Ping Status              : %8.8X\n",
                card->pingstatus);
      seq_printf(seq, "Minimum grant            : %2.2x\n",
                config->MinGrant);
      seq_printf(seq, "Maximum Latency          : %2.2x\n", config->MaxLat);
      seq_printf(seq, "PciStatus                : %4.4x\n",
                config->Pcistatus);
      seq_printf(seq, "Debug Device Id          : %4.4x\n",
                config->DbgDevId);
      seq_printf(seq, "DRAM ROM Function        : %4.4x\n",
                config->DramRomFn);
      seq_printf(seq, "Network interface Pin 1  : %2.2x\n",
                config->NetIntPin1);
      seq_printf(seq, "Network interface Pin 2  : %2.2x\n",
                config->NetIntPin1);
      seq_printf(seq, "Network interface Pin 3  : %2.2x\n",
                config->NetIntPin1);
      seq_printf(seq, "PM capabilities          : %4.4X\n",
                config->PMECapab);
      seq_printf(seq, "Network Clock Controls   : %4.4X\n",
                config->NwClkCtrls);

      switch (config->FruFormat) {
      case ATK_FRU_FORMAT:
            {
                  seq_printf(seq,
                      "Vendor                   : Alacritech, Inc.\n");
                  seq_printf(seq,
                      "Assembly #               : %c%c%c%c%c%c\n",
                            fru[0], fru[1], fru[2], fru[3], fru[4],
                            fru[5]);
                  seq_printf(seq,
                            "Revision #               : %c%c\n",
                            fru[6], fru[7]);

                  if (config->OEMFruFormat == VENDOR4_FRU_FORMAT) {
                        seq_printf(seq,
                                  "Serial   #               : "
                                  "%c%c%c%c%c%c%c%c%c%c%c%c\n",
                                  fru[8], fru[9], fru[10],
                                  fru[11], fru[12], fru[13],
                                  fru[16], fru[17], fru[18],
                                  fru[19], fru[20], fru[21]);
                  } else {
                        seq_printf(seq,
                                  "Serial   #               : "
                                  "%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",
                                  fru[8], fru[9], fru[10],
                                  fru[11], fru[12], fru[13],
                                  fru[14], fru[15], fru[16],
                                  fru[17], fru[18], fru[19],
                                  fru[20], fru[21]);
                  }
                  break;
            }

      default:
            {
                  seq_printf(seq,
                      "Vendor                   : Alacritech, Inc.\n");
                  seq_printf(seq,
                      "Serial   #               : Empty FRU\n");
                  break;
            }
      }

      switch (config->OEMFruFormat) {
      case VENDOR1_FRU_FORMAT:
            {
                  seq_printf(seq, "FRU Information:\n");
                  seq_printf(seq, "    Commodity #          : %c\n",
                            oemfru[0]);
                  seq_printf(seq,
                            "    Assembly #           : %c%c%c%c\n",
                            oemfru[1], oemfru[2], oemfru[3], oemfru[4]);
                  seq_printf(seq,
                            "    Revision #           : %c%c\n",
                            oemfru[5], oemfru[6]);
                  seq_printf(seq,
                            "    Supplier #           : %c%c\n",
                            oemfru[7], oemfru[8]);
                  seq_printf(seq,
                            "    Date                 : %c%c\n",
                            oemfru[9], oemfru[10]);
                  seq_sprintf(seq,
                            "    Sequence #           : %c%c%c\n",
                            oemfru[11], oemfru[12], oemfru[13]);
                  break;
            }

      case VENDOR2_FRU_FORMAT:
            {
                  seq_printf(seq, "FRU Information:\n");
                  seq_printf(seq,
                            "    Part     #           : "
                            "%c%c%c%c%c%c%c%c\n",
                            oemfru[0], oemfru[1], oemfru[2],
                            oemfru[3], oemfru[4], oemfru[5],
                            oemfru[6], oemfru[7]);
                  seq_printf(seq,
                            "    Supplier #           : %c%c%c%c%c\n",
                            oemfru[8], oemfru[9], oemfru[10],
                            oemfru[11], oemfru[12]);
                  seq_printf(seq,
                            "    Date                 : %c%c%c\n",
                            oemfru[13], oemfru[14], oemfru[15]);
                  seq_sprintf(seq,
                            "    Sequence #           : %c%c%c%c\n",
                            oemfru[16], oemfru[17], oemfru[18],
                            oemfru[19]);
                  break;
            }

      case VENDOR3_FRU_FORMAT:
            {
                  seq_printf(seq, "FRU Information:\n");
            }

      case VENDOR4_FRU_FORMAT:
            {
                  seq_printf(seq, "FRU Information:\n");
                  seq_printf(seq,
                            "    FRU Number           : "
                            "%c%c%c%c%c%c%c%c\n",
                            oemfru[0], oemfru[1], oemfru[2],
                            oemfru[3], oemfru[4], oemfru[5],
                            oemfru[6], oemfru[7]);
                  seq_sprintf(seq,
                            "    Part Number          : "
                            "%c%c%c%c%c%c%c%c\n",
                            oemfru[8], oemfru[9], oemfru[10],
                            oemfru[11], oemfru[12], oemfru[13],
                            oemfru[14], oemfru[15]);
                  seq_printf(seq,
                            "    EC Level             : "
                            "%c%c%c%c%c%c%c%c\n",
                            oemfru[16], oemfru[17], oemfru[18],
                            oemfru[19], oemfru[20], oemfru[21],
                            oemfru[22], oemfru[23]);
                  break;
            }

      default:
            break;
      }
#endif

      return 0;
}

static int slic_debug_adapter_show(struct seq_file *seq, void *v)
{
      struct adapter *adapter = seq->private;

      if ((adapter->netdev) && (adapter->netdev->name)) {
            seq_printf(seq, "info: interface          : %s\n",
                      adapter->netdev->name);
      }
      seq_printf(seq, "info: status             : %s\n",
            SLIC_LINKSTATE(adapter->linkstate));
      seq_printf(seq, "info: port               : %d\n",
            adapter->physport);
      seq_printf(seq, "info: speed              : %s\n",
            SLIC_SPEED(adapter->linkspeed));
      seq_printf(seq, "info: duplex             : %s\n",
            SLIC_DUPLEX(adapter->linkduplex));
      seq_printf(seq, "info: irq                : 0x%X\n",
            (uint) adapter->irq);
      seq_printf(seq, "info: Interrupt Agg Delay: %d usec\n",
            adapter->card->loadlevel_current);
      seq_printf(seq, "info: RcvQ max entries   : %4.4X\n",
            SLIC_RCVQ_ENTRIES);
      seq_printf(seq, "info: RcvQ current       : %4.4X\n",
                adapter->rcvqueue.count);
      seq_printf(seq, "rx stats: packets                  : %8.8lX\n",
                adapter->stats.rx_packets);
      seq_printf(seq, "rx stats: bytes                    : %8.8lX\n",
                adapter->stats.rx_bytes);
      seq_printf(seq, "rx stats: broadcasts               : %8.8X\n",
                adapter->rcv_broadcasts);
      seq_printf(seq, "rx stats: multicasts               : %8.8X\n",
                adapter->rcv_multicasts);
      seq_printf(seq, "rx stats: unicasts                 : %8.8X\n",
                adapter->rcv_unicasts);
      seq_printf(seq, "rx stats: errors                   : %8.8X\n",
                (u32) adapter->slic_stats.iface.rcv_errors);
      seq_printf(seq, "rx stats: Missed errors            : %8.8X\n",
                (u32) adapter->slic_stats.iface.rcv_discards);
      seq_printf(seq, "rx stats: drops                    : %8.8X\n",
                  (u32) adapter->rcv_drops);
      seq_printf(seq, "tx stats: packets                  : %8.8lX\n",
                  adapter->stats.tx_packets);
      seq_printf(seq, "tx stats: bytes                    : %8.8lX\n",
                  adapter->stats.tx_bytes);
      seq_printf(seq, "tx stats: errors                   : %8.8X\n",
                  (u32) adapter->slic_stats.iface.xmt_errors);
      seq_printf(seq, "rx stats: multicasts               : %8.8lX\n",
                  adapter->stats.multicast);
      seq_printf(seq, "tx stats: collision errors         : %8.8X\n",
                  (u32) adapter->slic_stats.iface.xmit_collisions);
      seq_printf(seq, "perf: Max rcv frames/isr           : %8.8X\n",
                  adapter->max_isr_rcvs);
      seq_printf(seq, "perf: Rcv interrupt yields         : %8.8X\n",
                  adapter->rcv_interrupt_yields);
      seq_printf(seq, "perf: Max xmit complete/isr        : %8.8X\n",
                  adapter->max_isr_xmits);
      seq_printf(seq, "perf: error interrupts             : %8.8X\n",
                  adapter->error_interrupts);
      seq_printf(seq, "perf: error rmiss interrupts       : %8.8X\n",
                  adapter->error_rmiss_interrupts);
      seq_printf(seq, "perf: rcv interrupts               : %8.8X\n",
                  adapter->rcv_interrupts);
      seq_printf(seq, "perf: xmit interrupts              : %8.8X\n",
                  adapter->xmit_interrupts);
      seq_printf(seq, "perf: link event interrupts        : %8.8X\n",
                  adapter->linkevent_interrupts);
      seq_printf(seq, "perf: UPR interrupts               : %8.8X\n",
                  adapter->upr_interrupts);
      seq_printf(seq, "perf: interrupt count              : %8.8X\n",
                  adapter->num_isrs);
      seq_printf(seq, "perf: false interrupts             : %8.8X\n",
                  adapter->false_interrupts);
      seq_printf(seq, "perf: All register writes          : %8.8X\n",
                  adapter->all_reg_writes);
      seq_printf(seq, "perf: ICR register writes          : %8.8X\n",
                  adapter->icr_reg_writes);
      seq_printf(seq, "perf: ISR register writes          : %8.8X\n",
                  adapter->isr_reg_writes);
      seq_printf(seq, "ifevents: overflow 802 errors      : %8.8X\n",
                  adapter->if_events.oflow802);
      seq_printf(seq, "ifevents: transport overflow errors: %8.8X\n",
                  adapter->if_events.Tprtoflow);
      seq_printf(seq, "ifevents: underflow errors         : %8.8X\n",
                  adapter->if_events.uflow802);
      seq_printf(seq, "ifevents: receive early            : %8.8X\n",
                  adapter->if_events.rcvearly);
      seq_printf(seq, "ifevents: buffer overflows         : %8.8X\n",
                  adapter->if_events.Bufov);
      seq_printf(seq, "ifevents: carrier errors           : %8.8X\n",
                  adapter->if_events.Carre);
      seq_printf(seq, "ifevents: Long                     : %8.8X\n",
                  adapter->if_events.Longe);
      seq_printf(seq, "ifevents: invalid preambles        : %8.8X\n",
                  adapter->if_events.Invp);
      seq_printf(seq, "ifevents: CRC errors               : %8.8X\n",
                  adapter->if_events.Crc);
      seq_printf(seq, "ifevents: dribble nibbles          : %8.8X\n",
                  adapter->if_events.Drbl);
      seq_printf(seq, "ifevents: Code violations          : %8.8X\n",
                  adapter->if_events.Code);
      seq_printf(seq, "ifevents: TCP checksum errors      : %8.8X\n",
                  adapter->if_events.TpCsum);
      seq_printf(seq, "ifevents: TCP header short errors  : %8.8X\n",
                  adapter->if_events.TpHlen);
      seq_printf(seq, "ifevents: IP checksum errors       : %8.8X\n",
                  adapter->if_events.IpCsum);
      seq_printf(seq, "ifevents: IP frame incompletes     : %8.8X\n",
                  adapter->if_events.IpLen);
      seq_printf(seq, "ifevents: IP headers shorts        : %8.8X\n",
                  adapter->if_events.IpHlen);

      return 0;
}
static int slic_debug_adapter_open(struct inode *inode, struct file *file)
{
      return single_open(file, slic_debug_adapter_show, inode->i_private);
}

static int slic_debug_card_open(struct inode *inode, struct file *file)
{
      return single_open(file, slic_debug_card_show, inode->i_private);
}

static const struct file_operations slic_debug_adapter_fops = {
      .owner            = THIS_MODULE,
      .open       = slic_debug_adapter_open,
      .read       = seq_read,
      .llseek           = seq_lseek,
      .release    = single_release,
};

static const struct file_operations slic_debug_card_fops = {
      .owner            = THIS_MODULE,
      .open       = slic_debug_card_open,
      .read       = seq_read,
      .llseek           = seq_lseek,
      .release    = single_release,
};

static void slic_debug_adapter_create(struct adapter *adapter)
{
      struct dentry *d;
      char    name[7];
      struct sliccard *card = adapter->card;

      if (!card->debugfs_dir)
            return;

      sprintf(name, "port%d", adapter->port);
      d = debugfs_create_file(name, S_IRUGO,
                        card->debugfs_dir, adapter,
                        &slic_debug_adapter_fops);
      if (!d || IS_ERR(d))
            pr_info(PFX "%s: debugfs create failed\n", name);
      else
            adapter->debugfs_entry = d;
}

static void slic_debug_adapter_destroy(struct adapter *adapter)
{
      if (adapter->debugfs_entry) {
            debugfs_remove(adapter->debugfs_entry);
            adapter->debugfs_entry = NULL;
      }
}

static void slic_debug_card_create(struct sliccard *card)
{
      struct dentry *d;
      char    name[IFNAMSIZ];

      snprintf(name, sizeof(name), "slic%d", card->cardnum);
      d = debugfs_create_dir(name, slic_debugfs);
      if (!d || IS_ERR(d))
            pr_info(PFX "%s: debugfs create dir failed\n",
                        name);
      else {
            card->debugfs_dir = d;
            d = debugfs_create_file("cardinfo", S_IRUGO,
                        slic_debugfs, card,
                        &slic_debug_card_fops);
            if (!d || IS_ERR(d))
                  pr_info(PFX "%s: debugfs create failed\n",
                              name);
            else
                  card->debugfs_cardinfo = d;
      }
}

static void slic_debug_card_destroy(struct sliccard *card)
{
      int i;

      for (i = 0; i < card->card_size; i++) {
            struct adapter *adapter;

            adapter = card->adapter[i];
            if (adapter)
                  slic_debug_adapter_destroy(adapter);
      }
      if (card->debugfs_cardinfo) {
            debugfs_remove(card->debugfs_cardinfo);
            card->debugfs_cardinfo = NULL;
      }
      if (card->debugfs_dir) {
            debugfs_remove(card->debugfs_dir);
            card->debugfs_dir = NULL;
      }
}

static void slic_debug_init(void)
{
      struct dentry *ent;

      ent = debugfs_create_dir("slic", NULL);
      if (!ent || IS_ERR(ent)) {
            pr_info(PFX "debugfs create directory failed\n");
            return;
      }

      slic_debugfs = ent;
}

static void slic_debug_cleanup(void)
{
      if (slic_debugfs) {
            debugfs_remove(slic_debugfs);
            slic_debugfs = NULL;
      }
}

/******************************************************************************/
/****************   MODULE INITIATION / TERMINATION FUNCTIONS   ***************/
/******************************************************************************/

static struct pci_driver slic_driver = {
      .name = DRV_NAME,
      .id_table = slic_pci_tbl,
      .probe = slic_entry_probe,
      .remove = __devexit_p(slic_entry_remove),
};

static int __init slic_module_init(void)
{
      slic_init_driver();

      if (debug >= 0 && slic_debug != debug)
            printk(KERN_DEBUG KBUILD_MODNAME ": debug level is %d.\n",
                   debug);
      if (debug >= 0)
            slic_debug = debug;

      return pci_register_driver(&slic_driver);
}

static void __exit slic_module_cleanup(void)
{
      pci_unregister_driver(&slic_driver);
      slic_debug_cleanup();
}

module_init(slic_module_init);
module_exit(slic_module_cleanup);

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