/**************************************************************************
 *
 * 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 actually 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 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 DEFINE_PCI_DEVICE_TABLE(slic_pci_tbl) = {
        { PCI_DEVICE(PCI_VENDOR_ID_ALACRITECH, SLIC_1GB_DEVICE_ID) },
        { PCI_DEVICE(PCI_VENDOR_ID_ALACRITECH, SLIC_2GB_DEVICE_ID) },
        { 0 }
};

MODULE_DEVICE_TABLE(pci, slic_pci_tbl);

#ifdef ASSERT
#undef ASSERT
#endif

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);
}

#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 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);
}

/*
 * 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 < ARRAY_SIZE(p); 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_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);
}

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

/*
 *  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 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:
                return -ENOENT;
        }

        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) {
                        release_firmware(fw);
                        return -EINVAL;
                }
                break;
        case SLIC_1GB_DEVICE_ID:
                if (rcvucodelen != GBRcvUCodeLen) {
                        release_firmware(fw);
                        return -EINVAL;
                }
                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;
}

MODULE_FIRMWARE("slicoss/oasisrcvucode.sys");
MODULE_FIRMWARE("slicoss/gbrcvucode.sys");

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 0;
}

MODULE_FIRMWARE("slicoss/oasisdownload.sys");
MODULE_FIRMWARE("slicoss/gbdownload.sys");

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

        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++;
                        netdev->stats.multicast++;
                        return true;
                }
                if (opts & MAC_MCAST) {
                        struct mcast_address *mcaddr = adapter->mcastaddrs;

                        while (mcaddr) {
                                if (!compare_ether_addr(mcaddr->address,
                                                        ether_frame->ether_dhost)) {
                                        adapter->rcv_multicasts++;
                                        netdev->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 = netdev_priv(dev);
        struct sockaddr *addr = ptr;

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

        if (!is_valid_ether_addr(addr->sa_data))
                return -EINVAL;

        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 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 0;
}

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 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 rc;

        spin_lock_irqsave(&adapter->upr_lock.lock, adapter->upr_lock.flags);
        rc = slic_upr_queue_request(adapter,
                                        upr_request,
                                        upr_data,
                                        upr_data_h, upr_buffer, upr_buffer_h);
        if (rc)
                goto err_unlock_irq;

        slic_upr_start(adapter);
err_unlock_irq:
        spin_unlock_irqrestore(&adapter->upr_lock.lock,
                                adapter->upr_lock.flags);
        return rc;
}

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 BITS_PER_LONG == 64
                slic_upr_queue_request(adapter,
                                       SLIC_UPR_RLSR,
                                       SLIC_GET_ADDR_LOW(&pshmem->linkstatus),
                                       SLIC_GET_ADDR_HIGH(&pshmem->linkstatus),
                                       0, 0);
#else
                slic_upr_queue_request(adapter,
                                       SLIC_UPR_RLSR,
                                       (u32) &pshmem->linkstatus,
                                       SLIC_GET_ADDR_HIGH(pshmem), 0, 0);
#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);
        }
}

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_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);
}

/*
 *  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;
#if BITS_PER_LONG == 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 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 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 -ENOMEM;
                }
                /* FIXME:
                 * do we really need this assertions (4K PAGE_SIZE aligned addr)? */
#if 0
#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
#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 0;
}

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;
#if BITS_PER_LONG == 32
        ASSERT((buf->status & 0xFFFFFFE0) == 0);
#endif
        ASSERT(buf->hosthandle);
        if (++rspq->offset < SLIC_RSPQ_BUFSINPAGE) {
                rspq->rspbuf++;
#if BITS_PER_LONG == 32
                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];
#if BITS_PER_LONG == 32
                ASSERT(((u32) rspq->rspbuf & 0xFFFFF000) ==
                       (u32) rspq->rspbuf);
#endif
        }
#if BITS_PER_LONG == 32
        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;
#if BITS_PER_LONG == 32
        ASSERT(((u32) pageaddr & 0xFFFFF000) == (u32) pageaddr);
#endif
        cmdqmem->pages[cmdqmem->pagecnt] = pageaddr;
        cmdqmem->pagecnt++;
        return pageaddr;
}

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_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 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);
#if BITS_PER_LONG == 32
                ASSERT(((u32) pageaddr & 0xFFFFF000) == (u32) pageaddr);
#endif
                if (!pageaddr) {
                        slic_cmdq_free(adapter);
                        return -ENOMEM;
                }
                slic_cmdq_addcmdpage(adapter, pageaddr);
        }
        adapter->slic_handle_ix = 1;

        return 0;
}

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_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 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_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_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 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 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 -ENOMEM;
        }
        return 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 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;
        struct net_device *netdev = adapter->netdev;

        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",
                    netdev->stats.rx_packets);
        seq_printf(seq, "rx stats: bytes                    : %8.8lX\n",
                    netdev->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",
                        netdev->stats.tx_packets);
        seq_printf(seq, "tx stats: bytes                    : %8.8lX\n",
                        netdev->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",
                        netdev->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)
{
        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;
        }
}

/*
 * 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 BITS_PER_LONG == 64
        status = slic_upr_request(adapter,
                                  SLIC_UPR_RLSR,
                                  SLIC_GET_ADDR_LOW(&pshmem->linkstatus),
                                  SLIC_GET_ADDR_HIGH(&pshmem->linkstatus),
                                  0, 0);
#else
        status = slic_upr_request(adapter, SLIC_UPR_RLSR,
                (u32) &pshmem->linkstatus,      /* no 4GB wrap guaranteed */
                                  0, 0, 0);
#endif
        ASSERT(status == 0);
}

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);
}

/*
 *  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;

        /* Check to see if it already exists */
        mlist = adapter->mcastaddrs;
        while (mlist) {
                if (!compare_ether_addr(mlist->address, address))
                        return 0;
                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 0;
}

static void slic_mcast_set_list(struct net_device *dev)
{
        struct adapter *adapter = netdev_priv(dev);
        int status = 0;
        char *addresses;
        struct netdev_hw_addr *ha;

        ASSERT(adapter);

        netdev_for_each_mc_addr(ha, dev) {
                addresses = (char *) &ha->addr;
                status = slic_mcast_add_list(adapter, addresses);
                if (status != 0)
                        break;
                slic_mcast_set_bit(adapter, addresses);
        }

        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 == 0)
                        slic_mcast_set_mask(adapter);
        }
}

#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 BITS_PER_LONG == 64
        hcmd->cmdsize = (u32) ((((u64)&ihcmd->u.slic_buffers.bufs[1] -
                                     (u64) hcmd) + 31) >> 5);
#else
        hcmd->cmdsize = ((((u32) &ihcmd->u.slic_buffers.bufs[1] -
                           (u32) hcmd) + 31) >> 5);
#endif
}

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->netdev->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;
        struct net_device *netdev = adapter->netdev;

        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++;
                        netdev->stats.rx_fifo_errors++;
                }
                if (hdr->frame_status_b14 & VRHSTATB_BUFF) {
                        adapter->if_events.Bufov++;
                        netdev->stats.rx_over_errors++;
                }
                if (hdr->frame_status_b14 & VRHSTATB_CARRE) {
                        adapter->if_events.Carre++;
                        netdev->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++;
                        netdev->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 net_device *netdev = adapter->netdev;
        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);
                netdev->stats.rx_packets++;
                netdev->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 = 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;
}

#define NORMAL_ETHFRAME     0

static netdev_tx_t slic_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
        struct sliccard *card;
        struct adapter *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);
        }
        dev->stats.tx_packets++;
        dev->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 NETDEV_TX_OK;
xmit_fail:
        slic_xmit_fail(adapter, skb, offloadcmd, skbtype, status);
        goto xmit_done;
}


static void slic_adapter_freeresources(struct adapter *adapter)
{
        slic_init_cleanup(adapter);
        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;
}

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);