cnic.c

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/* cnic.c: Broadcom CNIC core network driver.
 *
 * Copyright (c) 2006-2012 Broadcom Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Original skeleton written by: John(Zongxi) Chen ([email protected])
 * Modified and maintained by: Michael Chan <[email protected]>
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/uio_driver.h>
#include <linux/in.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/prefetch.h>
#include <linux/random.h>
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#define BCM_VLAN 1
#endif
#include <net/ip.h>
#include <net/tcp.h>
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/ip6_checksum.h>
#include <scsi/iscsi_if.h>

#include "cnic_if.h"
#include "bnx2.h"
#include "bnx2x/bnx2x_reg.h"
#include "bnx2x/bnx2x_fw_defs.h"
#include "bnx2x/bnx2x_hsi.h"
#include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
#include "../../../scsi/bnx2fc/bnx2fc_constants.h"
#include "cnic.h"
#include "cnic_defs.h"

#define DRV_MODULE_NAME     "cnic"

static char version[] __devinitdata =
    "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";

MODULE_AUTHOR("Michael Chan <[email protected]> and John(Zongxi) "
          "Chen ([email protected]");
MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(CNIC_MODULE_VERSION);

/* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
static LIST_HEAD(cnic_dev_list);
static LIST_HEAD(cnic_udev_list);
static DEFINE_RWLOCK(cnic_dev_lock);
static DEFINE_MUTEX(cnic_lock);

static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];

/* helper function, assuming cnic_lock is held */
static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
{
    return rcu_dereference_protected(cnic_ulp_tbl[type],
                     lockdep_is_held(&cnic_lock));
}

static int cnic_service_bnx2(void *, void *);
static int cnic_service_bnx2x(void *, void *);
static int cnic_ctl(void *, struct cnic_ctl_info *);

static struct cnic_ops cnic_bnx2_ops = {
    .cnic_owner = THIS_MODULE,
    .cnic_handler   = cnic_service_bnx2,
    .cnic_ctl   = cnic_ctl,
};

static struct cnic_ops cnic_bnx2x_ops = {
    .cnic_owner = THIS_MODULE,
    .cnic_handler   = cnic_service_bnx2x,
    .cnic_ctl   = cnic_ctl,
};

static struct workqueue_struct *cnic_wq;

static void cnic_shutdown_rings(struct cnic_dev *);
static void cnic_init_rings(struct cnic_dev *);
static int cnic_cm_set_pg(struct cnic_sock *);

static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
{
    struct cnic_uio_dev *udev = uinfo->priv;
    struct cnic_dev *dev;

    if (!capable(CAP_NET_ADMIN))
        return -EPERM;

    if (udev->uio_dev != -1)
        return -EBUSY;

    rtnl_lock();
    dev = udev->dev;

    if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
        rtnl_unlock();
        return -ENODEV;
    }

    udev->uio_dev = iminor(inode);

    cnic_shutdown_rings(dev);
    cnic_init_rings(dev);
    rtnl_unlock();

    return 0;
}

static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
{
    struct cnic_uio_dev *udev = uinfo->priv;

    udev->uio_dev = -1;
    return 0;
}

static inline void cnic_hold(struct cnic_dev *dev)
{
    atomic_inc(&dev->ref_count);
}

static inline void cnic_put(struct cnic_dev *dev)
{
    atomic_dec(&dev->ref_count);
}

static inline void csk_hold(struct cnic_sock *csk)
{
    atomic_inc(&csk->ref_count);
}

static inline void csk_put(struct cnic_sock *csk)
{
    atomic_dec(&csk->ref_count);
}

static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
{
    struct cnic_dev *cdev;

    read_lock(&cnic_dev_lock);
    list_for_each_entry(cdev, &cnic_dev_list, list) {
        if (netdev == cdev->netdev) {
            cnic_hold(cdev);
            read_unlock(&cnic_dev_lock);
            return cdev;
        }
    }
    read_unlock(&cnic_dev_lock);
    return NULL;
}

static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
{
    atomic_inc(&ulp_ops->ref_count);
}

static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
{
    atomic_dec(&ulp_ops->ref_count);
}

static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;
    struct drv_ctl_io *io = &info.data.io;

    info.cmd = DRV_CTL_CTX_WR_CMD;
    io->cid_addr = cid_addr;
    io->offset = off;
    io->data = val;
    ethdev->drv_ctl(dev->netdev, &info);
}

static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;
    struct drv_ctl_io *io = &info.data.io;

    info.cmd = DRV_CTL_CTXTBL_WR_CMD;
    io->offset = off;
    io->dma_addr = addr;
    ethdev->drv_ctl(dev->netdev, &info);
}

static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;
    struct drv_ctl_l2_ring *ring = &info.data.ring;

    if (start)
        info.cmd = DRV_CTL_START_L2_CMD;
    else
        info.cmd = DRV_CTL_STOP_L2_CMD;

    ring->cid = cid;
    ring->client_id = cl_id;
    ethdev->drv_ctl(dev->netdev, &info);
}

static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;
    struct drv_ctl_io *io = &info.data.io;

    info.cmd = DRV_CTL_IO_WR_CMD;
    io->offset = off;
    io->data = val;
    ethdev->drv_ctl(dev->netdev, &info);
}

static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;
    struct drv_ctl_io *io = &info.data.io;

    info.cmd = DRV_CTL_IO_RD_CMD;
    io->offset = off;
    ethdev->drv_ctl(dev->netdev, &info);
    return io->data;
}

static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;
    struct fcoe_capabilities *fcoe_cap =
        &info.data.register_data.fcoe_features;

    if (reg) {
        info.cmd = DRV_CTL_ULP_REGISTER_CMD;
        if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
            memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
    } else {
        info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
    }

    info.data.ulp_type = ulp_type;
    ethdev->drv_ctl(dev->netdev, &info);
}

static int cnic_in_use(struct cnic_sock *csk)
{
    return test_bit(SK_F_INUSE, &csk->flags);
}

static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct drv_ctl_info info;

    info.cmd = cmd;
    info.data.credit.credit_count = count;
    ethdev->drv_ctl(dev->netdev, &info);
}

static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
{
    u32 i;

    if (!cp->ctx_tbl)
        return -EINVAL;

    for (i = 0; i < cp->max_cid_space; i++) {
        if (cp->ctx_tbl[i].cid == cid) {
            *l5_cid = i;
            return 0;
        }
    }
    return -EINVAL;
}

static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
               struct cnic_sock *csk)
{
    struct iscsi_path path_req;
    char *buf = NULL;
    u16 len = 0;
    u32 msg_type = ISCSI_KEVENT_IF_DOWN;
    struct cnic_ulp_ops *ulp_ops;
    struct cnic_uio_dev *udev = cp->udev;
    int rc = 0, retry = 0;

    if (!udev || udev->uio_dev == -1)
        return -ENODEV;

    if (csk) {
        len = sizeof(path_req);
        buf = (char *) &path_req;
        memset(&path_req, 0, len);

        msg_type = ISCSI_KEVENT_PATH_REQ;
        path_req.handle = (u64) csk->l5_cid;
        if (test_bit(SK_F_IPV6, &csk->flags)) {
            memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
                   sizeof(struct in6_addr));
            path_req.ip_addr_len = 16;
        } else {
            memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
                   sizeof(struct in_addr));
            path_req.ip_addr_len = 4;
        }
        path_req.vlan_id = csk->vlan_id;
        path_req.pmtu = csk->mtu;
    }

    while (retry < 3) {
        rc = 0;
        rcu_read_lock();
        ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
        if (ulp_ops)
            rc = ulp_ops->iscsi_nl_send_msg(
                cp->ulp_handle[CNIC_ULP_ISCSI],
                msg_type, buf, len);
        rcu_read_unlock();
        if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
            break;

        msleep(100);
        retry++;
    }
    return rc;
}

static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);

static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
                  char *buf, u16 len)
{
    int rc = -EINVAL;

    switch (msg_type) {
    case ISCSI_UEVENT_PATH_UPDATE: {
        struct cnic_local *cp;
        u32 l5_cid;
        struct cnic_sock *csk;
        struct iscsi_path *path_resp;

        if (len < sizeof(*path_resp))
            break;

        path_resp = (struct iscsi_path *) buf;
        cp = dev->cnic_priv;
        l5_cid = (u32) path_resp->handle;
        if (l5_cid >= MAX_CM_SK_TBL_SZ)
            break;

        rcu_read_lock();
        if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
            rc = -ENODEV;
            rcu_read_unlock();
            break;
        }
        csk = &cp->csk_tbl[l5_cid];
        csk_hold(csk);
        if (cnic_in_use(csk) &&
            test_bit(SK_F_CONNECT_START, &csk->flags)) {

            csk->vlan_id = path_resp->vlan_id;

            memcpy(csk->ha, path_resp->mac_addr, 6);
            if (test_bit(SK_F_IPV6, &csk->flags))
                memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
                       sizeof(struct in6_addr));
            else
                memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
                       sizeof(struct in_addr));

            if (is_valid_ether_addr(csk->ha)) {
                cnic_cm_set_pg(csk);
            } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
                !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {

                cnic_cm_upcall(cp, csk,
                    L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
                clear_bit(SK_F_CONNECT_START, &csk->flags);
            }
        }
        csk_put(csk);
        rcu_read_unlock();
        rc = 0;
    }
    }

    return rc;
}

static int cnic_offld_prep(struct cnic_sock *csk)
{
    if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
        return 0;

    if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
        clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
        return 0;
    }

    return 1;
}

static int cnic_close_prep(struct cnic_sock *csk)
{
    clear_bit(SK_F_CONNECT_START, &csk->flags);
    smp_mb__after_clear_bit();

    if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
        while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
            msleep(1);

        return 1;
    }
    return 0;
}

static int cnic_abort_prep(struct cnic_sock *csk)
{
    clear_bit(SK_F_CONNECT_START, &csk->flags);
    smp_mb__after_clear_bit();

    while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
        msleep(1);

    if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
        csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
        return 1;
    }

    return 0;
}

int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
{
    struct cnic_dev *dev;

    if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
        pr_err("%s: Bad type %d\n", __func__, ulp_type);
        return -EINVAL;
    }
    mutex_lock(&cnic_lock);
    if (cnic_ulp_tbl_prot(ulp_type)) {
        pr_err("%s: Type %d has already been registered\n",
               __func__, ulp_type);
        mutex_unlock(&cnic_lock);
        return -EBUSY;
    }

    read_lock(&cnic_dev_lock);
    list_for_each_entry(dev, &cnic_dev_list, list) {
        struct cnic_local *cp = dev->cnic_priv;

        clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
    }
    read_unlock(&cnic_dev_lock);

    atomic_set(&ulp_ops->ref_count, 0);
    rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
    mutex_unlock(&cnic_lock);

    /* Prevent race conditions with netdev_event */
    rtnl_lock();
    list_for_each_entry(dev, &cnic_dev_list, list) {
        struct cnic_local *cp = dev->cnic_priv;

        if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
            ulp_ops->cnic_init(dev);
    }
    rtnl_unlock();

    return 0;
}

int cnic_unregister_driver(int ulp_type)
{
    struct cnic_dev *dev;
    struct cnic_ulp_ops *ulp_ops;
    int i = 0;

    if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
        pr_err("%s: Bad type %d\n", __func__, ulp_type);
        return -EINVAL;
    }
    mutex_lock(&cnic_lock);
    ulp_ops = cnic_ulp_tbl_prot(ulp_type);
    if (!ulp_ops) {
        pr_err("%s: Type %d has not been registered\n",
               __func__, ulp_type);
        goto out_unlock;
    }
    read_lock(&cnic_dev_lock);
    list_for_each_entry(dev, &cnic_dev_list, list) {
        struct cnic_local *cp = dev->cnic_priv;

        if (rcu_dereference(cp->ulp_ops[ulp_type])) {
            pr_err("%s: Type %d still has devices registered\n",
                   __func__, ulp_type);
            read_unlock(&cnic_dev_lock);
            goto out_unlock;
        }
    }
    read_unlock(&cnic_dev_lock);

    RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);

    mutex_unlock(&cnic_lock);
    synchronize_rcu();
    while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
        msleep(100);
        i++;
    }

    if (atomic_read(&ulp_ops->ref_count) != 0)
        pr_warn("%s: Failed waiting for ref count to go to zero\n",
            __func__);
    return 0;

out_unlock:
    mutex_unlock(&cnic_lock);
    return -EINVAL;
}

static int cnic_start_hw(struct cnic_dev *);
static void cnic_stop_hw(struct cnic_dev *);

static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
                void *ulp_ctx)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_ulp_ops *ulp_ops;

    if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
        pr_err("%s: Bad type %d\n", __func__, ulp_type);
        return -EINVAL;
    }
    mutex_lock(&cnic_lock);
    if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
        pr_err("%s: Driver with type %d has not been registered\n",
               __func__, ulp_type);
        mutex_unlock(&cnic_lock);
        return -EAGAIN;
    }
    if (rcu_dereference(cp->ulp_ops[ulp_type])) {
        pr_err("%s: Type %d has already been registered to this device\n",
               __func__, ulp_type);
        mutex_unlock(&cnic_lock);
        return -EBUSY;
    }

    clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
    cp->ulp_handle[ulp_type] = ulp_ctx;
    ulp_ops = cnic_ulp_tbl_prot(ulp_type);
    rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
    cnic_hold(dev);

    if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
        if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
            ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);

    mutex_unlock(&cnic_lock);

    cnic_ulp_ctl(dev, ulp_type, true);

    return 0;

}
EXPORT_SYMBOL(cnic_register_driver);

static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
{
    struct cnic_local *cp = dev->cnic_priv;
    int i = 0;

    if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
        pr_err("%s: Bad type %d\n", __func__, ulp_type);
        return -EINVAL;
    }
    mutex_lock(&cnic_lock);
    if (rcu_dereference(cp->ulp_ops[ulp_type])) {
        RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
        cnic_put(dev);
    } else {
        pr_err("%s: device not registered to this ulp type %d\n",
               __func__, ulp_type);
        mutex_unlock(&cnic_lock);
        return -EINVAL;
    }
    mutex_unlock(&cnic_lock);

    if (ulp_type == CNIC_ULP_ISCSI)
        cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
    else if (ulp_type == CNIC_ULP_FCOE)
        dev->fcoe_cap = NULL;

    synchronize_rcu();

    while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
           i < 20) {
        msleep(100);
        i++;
    }
    if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
        netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");

    cnic_ulp_ctl(dev, ulp_type, false);

    return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
                u32 next)
{
    id_tbl->start = start_id;
    id_tbl->max = size;
    id_tbl->next = next;
    spin_lock_init(&id_tbl->lock);
    id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
    if (!id_tbl->table)
        return -ENOMEM;

    return 0;
}

static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
{
    kfree(id_tbl->table);
    id_tbl->table = NULL;
}

static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
{
    int ret = -1;

    id -= id_tbl->start;
    if (id >= id_tbl->max)
        return ret;

    spin_lock(&id_tbl->lock);
    if (!test_bit(id, id_tbl->table)) {
        set_bit(id, id_tbl->table);
        ret = 0;
    }
    spin_unlock(&id_tbl->lock);
    return ret;
}

/* Returns -1 if not successful */
static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
{
    u32 id;

    spin_lock(&id_tbl->lock);
    id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
    if (id >= id_tbl->max) {
        id = -1;
        if (id_tbl->next != 0) {
            id = find_first_zero_bit(id_tbl->table, id_tbl->next);
            if (id >= id_tbl->next)
                id = -1;
        }
    }

    if (id < id_tbl->max) {
        set_bit(id, id_tbl->table);
        id_tbl->next = (id + 1) & (id_tbl->max - 1);
        id += id_tbl->start;
    }

    spin_unlock(&id_tbl->lock);

    return id;
}

static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
{
    if (id == -1)
        return;

    id -= id_tbl->start;
    if (id >= id_tbl->max)
        return;

    clear_bit(id, id_tbl->table);
}

static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
{
    int i;

    if (!dma->pg_arr)
        return;

    for (i = 0; i < dma->num_pages; i++) {
        if (dma->pg_arr[i]) {
            dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
                      dma->pg_arr[i], dma->pg_map_arr[i]);
            dma->pg_arr[i] = NULL;
        }
    }
    if (dma->pgtbl) {
        dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
                  dma->pgtbl, dma->pgtbl_map);
        dma->pgtbl = NULL;
    }
    kfree(dma->pg_arr);
    dma->pg_arr = NULL;
    dma->num_pages = 0;
}

static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
{
    int i;
    __le32 *page_table = (__le32 *) dma->pgtbl;

    for (i = 0; i < dma->num_pages; i++) {
        /* Each entry needs to be in big endian format. */
        *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
        page_table++;
        *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
        page_table++;
    }
}

static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
    int i;
    __le32 *page_table = (__le32 *) dma->pgtbl;

    for (i = 0; i < dma->num_pages; i++) {
        /* Each entry needs to be in little endian format. */
        *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
        page_table++;
        *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
        page_table++;
    }
}

static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
              int pages, int use_pg_tbl)
{
    int i, size;
    struct cnic_local *cp = dev->cnic_priv;

    size = pages * (sizeof(void *) + sizeof(dma_addr_t));
    dma->pg_arr = kzalloc(size, GFP_ATOMIC);
    if (dma->pg_arr == NULL)
        return -ENOMEM;

    dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
    dma->num_pages = pages;

    for (i = 0; i < pages; i++) {
        dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
                            BCM_PAGE_SIZE,
                            &dma->pg_map_arr[i],
                            GFP_ATOMIC);
        if (dma->pg_arr[i] == NULL)
            goto error;
    }
    if (!use_pg_tbl)
        return 0;

    dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
              ~(BCM_PAGE_SIZE - 1);
    dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
                    &dma->pgtbl_map, GFP_ATOMIC);
    if (dma->pgtbl == NULL)
        goto error;

    cp->setup_pgtbl(dev, dma);

    return 0;

error:
    cnic_free_dma(dev, dma);
    return -ENOMEM;
}

static void cnic_free_context(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int i;

    for (i = 0; i < cp->ctx_blks; i++) {
        if (cp->ctx_arr[i].ctx) {
            dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
                      cp->ctx_arr[i].ctx,
                      cp->ctx_arr[i].mapping);
            cp->ctx_arr[i].ctx = NULL;
        }
    }
}

static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
{
    if (udev->l2_buf) {
        dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
                  udev->l2_buf, udev->l2_buf_map);
        udev->l2_buf = NULL;
    }

    if (udev->l2_ring) {
        dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
                  udev->l2_ring, udev->l2_ring_map);
        udev->l2_ring = NULL;
    }

}

static void __cnic_free_uio(struct cnic_uio_dev *udev)
{
    uio_unregister_device(&udev->cnic_uinfo);

    __cnic_free_uio_rings(udev);

    pci_dev_put(udev->pdev);
    kfree(udev);
}

static void cnic_free_uio(struct cnic_uio_dev *udev)
{
    if (!udev)
        return;

    write_lock(&cnic_dev_lock);
    list_del_init(&udev->list);
    write_unlock(&cnic_dev_lock);
    __cnic_free_uio(udev);
}

static void cnic_free_resc(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev = cp->udev;

    if (udev) {
        udev->dev = NULL;
        cp->udev = NULL;
        if (udev->uio_dev == -1)
            __cnic_free_uio_rings(udev);
    }

    cnic_free_context(dev);
    kfree(cp->ctx_arr);
    cp->ctx_arr = NULL;
    cp->ctx_blks = 0;

    cnic_free_dma(dev, &cp->gbl_buf_info);
    cnic_free_dma(dev, &cp->kwq_info);
    cnic_free_dma(dev, &cp->kwq_16_data_info);
    cnic_free_dma(dev, &cp->kcq2.dma);
    cnic_free_dma(dev, &cp->kcq1.dma);
    kfree(cp->iscsi_tbl);
    cp->iscsi_tbl = NULL;
    kfree(cp->ctx_tbl);
    cp->ctx_tbl = NULL;

    cnic_free_id_tbl(&cp->fcoe_cid_tbl);
    cnic_free_id_tbl(&cp->cid_tbl);
}

static int cnic_alloc_context(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    if (CHIP_NUM(cp) == CHIP_NUM_5709) {
        int i, k, arr_size;

        cp->ctx_blk_size = BCM_PAGE_SIZE;
        cp->cids_per_blk = BCM_PAGE_SIZE / 128;
        arr_size = BNX2_MAX_CID / cp->cids_per_blk *
               sizeof(struct cnic_ctx);
        cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
        if (cp->ctx_arr == NULL)
            return -ENOMEM;

        k = 0;
        for (i = 0; i < 2; i++) {
            u32 j, reg, off, lo, hi;

            if (i == 0)
                off = BNX2_PG_CTX_MAP;
            else
                off = BNX2_ISCSI_CTX_MAP;

            reg = cnic_reg_rd_ind(dev, off);
            lo = reg >> 16;
            hi = reg & 0xffff;
            for (j = lo; j < hi; j += cp->cids_per_blk, k++)
                cp->ctx_arr[k].cid = j;
        }

        cp->ctx_blks = k;
        if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
            cp->ctx_blks = 0;
            return -ENOMEM;
        }

        for (i = 0; i < cp->ctx_blks; i++) {
            cp->ctx_arr[i].ctx =
                dma_alloc_coherent(&dev->pcidev->dev,
                           BCM_PAGE_SIZE,
                           &cp->ctx_arr[i].mapping,
                           GFP_KERNEL);
            if (cp->ctx_arr[i].ctx == NULL)
                return -ENOMEM;
        }
    }
    return 0;
}

static u16 cnic_bnx2_next_idx(u16 idx)
{
    return idx + 1;
}

static u16 cnic_bnx2_hw_idx(u16 idx)
{
    return idx;
}

static u16 cnic_bnx2x_next_idx(u16 idx)
{
    idx++;
    if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
        idx++;

    return idx;
}

static u16 cnic_bnx2x_hw_idx(u16 idx)
{
    if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
        idx++;
    return idx;
}

static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
              bool use_pg_tbl)
{
    int err, i, use_page_tbl = 0;
    struct kcqe **kcq;

    if (use_pg_tbl)
        use_page_tbl = 1;

    err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
    if (err)
        return err;

    kcq = (struct kcqe **) info->dma.pg_arr;
    info->kcq = kcq;

    info->next_idx = cnic_bnx2_next_idx;
    info->hw_idx = cnic_bnx2_hw_idx;
    if (use_pg_tbl)
        return 0;

    info->next_idx = cnic_bnx2x_next_idx;
    info->hw_idx = cnic_bnx2x_hw_idx;

    for (i = 0; i < KCQ_PAGE_CNT; i++) {
        struct bnx2x_bd_chain_next *next =
            (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
        int j = i + 1;

        if (j >= KCQ_PAGE_CNT)
            j = 0;
        next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
        next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
    }
    return 0;
}

static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
{
    struct cnic_local *cp = udev->dev->cnic_priv;

    if (udev->l2_ring)
        return 0;

    udev->l2_ring_size = pages * BCM_PAGE_SIZE;
    udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
                       &udev->l2_ring_map,
                       GFP_KERNEL | __GFP_COMP);
    if (!udev->l2_ring)
        return -ENOMEM;

    udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
    udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
    udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
                      &udev->l2_buf_map,
                      GFP_KERNEL | __GFP_COMP);
    if (!udev->l2_buf) {
        __cnic_free_uio_rings(udev);
        return -ENOMEM;
    }

    return 0;

}

static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev;

    read_lock(&cnic_dev_lock);
    list_for_each_entry(udev, &cnic_udev_list, list) {
        if (udev->pdev == dev->pcidev) {
            udev->dev = dev;
            if (__cnic_alloc_uio_rings(udev, pages)) {
                udev->dev = NULL;
                read_unlock(&cnic_dev_lock);
                return -ENOMEM;
            }
            cp->udev = udev;
            read_unlock(&cnic_dev_lock);
            return 0;
        }
    }
    read_unlock(&cnic_dev_lock);

    udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
    if (!udev)
        return -ENOMEM;

    udev->uio_dev = -1;

    udev->dev = dev;
    udev->pdev = dev->pcidev;

    if (__cnic_alloc_uio_rings(udev, pages))
        goto err_udev;

    write_lock(&cnic_dev_lock);
    list_add(&udev->list, &cnic_udev_list);
    write_unlock(&cnic_dev_lock);

    pci_dev_get(udev->pdev);

    cp->udev = udev;

    return 0;

 err_udev:
    kfree(udev);
    return -ENOMEM;
}

static int cnic_init_uio(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev = cp->udev;
    struct uio_info *uinfo;
    int ret = 0;

    if (!udev)
        return -ENOMEM;

    uinfo = &udev->cnic_uinfo;

    uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
    uinfo->mem[0].internal_addr = dev->regview;
    uinfo->mem[0].memtype = UIO_MEM_PHYS;

    if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
        uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
                             TX_MAX_TSS_RINGS + 1);
        uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
                    PAGE_MASK;
        if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
            uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
        else
            uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;

        uinfo->name = "bnx2_cnic";
    } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
        uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);

        uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
            PAGE_MASK;
        uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);

        uinfo->name = "bnx2x_cnic";
    }

    uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

    uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
    uinfo->mem[2].size = udev->l2_ring_size;
    uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

    uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
    uinfo->mem[3].size = udev->l2_buf_size;
    uinfo->mem[3].memtype = UIO_MEM_LOGICAL;

    uinfo->version = CNIC_MODULE_VERSION;
    uinfo->irq = UIO_IRQ_CUSTOM;

    uinfo->open = cnic_uio_open;
    uinfo->release = cnic_uio_close;

    if (udev->uio_dev == -1) {
        if (!uinfo->priv) {
            uinfo->priv = udev;

            ret = uio_register_device(&udev->pdev->dev, uinfo);
        }
    } else {
        cnic_init_rings(dev);
    }

    return ret;
}

static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int ret;

    ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
    if (ret)
        goto error;
    cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;

    ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
    if (ret)
        goto error;

    ret = cnic_alloc_context(dev);
    if (ret)
        goto error;

    ret = cnic_alloc_uio_rings(dev, 2);
    if (ret)
        goto error;

    ret = cnic_init_uio(dev);
    if (ret)
        goto error;

    return 0;

error:
    cnic_free_resc(dev);
    return ret;
}

static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int ctx_blk_size = cp->ethdev->ctx_blk_size;
    int total_mem, blks, i;

    total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
    blks = total_mem / ctx_blk_size;
    if (total_mem % ctx_blk_size)
        blks++;

    if (blks > cp->ethdev->ctx_tbl_len)
        return -ENOMEM;

    cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
    if (cp->ctx_arr == NULL)
        return -ENOMEM;

    cp->ctx_blks = blks;
    cp->ctx_blk_size = ctx_blk_size;
    if (!BNX2X_CHIP_IS_57710(cp->chip_id))
        cp->ctx_align = 0;
    else
        cp->ctx_align = ctx_blk_size;

    cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;

    for (i = 0; i < blks; i++) {
        cp->ctx_arr[i].ctx =
            dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
                       &cp->ctx_arr[i].mapping,
                       GFP_KERNEL);
        if (cp->ctx_arr[i].ctx == NULL)
            return -ENOMEM;

        if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
            if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
                cnic_free_context(dev);
                cp->ctx_blk_size += cp->ctx_align;
                i = -1;
                continue;
            }
        }
    }
    return 0;
}

static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    u32 start_cid = ethdev->starting_cid;
    int i, j, n, ret, pages;
    struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

    cp->iro_arr = ethdev->iro_arr;

    cp->max_cid_space = MAX_ISCSI_TBL_SZ;
    cp->iscsi_start_cid = start_cid;
    cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;

    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
        cp->max_cid_space += dev->max_fcoe_conn;
        cp->fcoe_init_cid = ethdev->fcoe_init_cid;
        if (!cp->fcoe_init_cid)
            cp->fcoe_init_cid = 0x10;
    }

    cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
                GFP_KERNEL);
    if (!cp->iscsi_tbl)
        goto error;

    cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
                cp->max_cid_space, GFP_KERNEL);
    if (!cp->ctx_tbl)
        goto error;

    for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
        cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
        cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
    }

    for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
        cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;

    pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
        PAGE_SIZE;

    ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
    if (ret)
        return -ENOMEM;

    n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
    for (i = 0, j = 0; i < cp->max_cid_space; i++) {
        long off = CNIC_KWQ16_DATA_SIZE * (i % n);

        cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
        cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
                           off;

        if ((i % n) == (n - 1))
            j++;
    }

    ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
    if (ret)
        goto error;

    if (CNIC_SUPPORTS_FCOE(cp)) {
        ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
        if (ret)
            goto error;
    }

    pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
    ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
    if (ret)
        goto error;

    ret = cnic_alloc_bnx2x_context(dev);
    if (ret)
        goto error;

    if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
        return 0;

    cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;

    cp->l2_rx_ring_size = 15;

    ret = cnic_alloc_uio_rings(dev, 4);
    if (ret)
        goto error;

    ret = cnic_init_uio(dev);
    if (ret)
        goto error;

    return 0;

error:
    cnic_free_resc(dev);
    return -ENOMEM;
}

static inline u32 cnic_kwq_avail(struct cnic_local *cp)
{
    return cp->max_kwq_idx -
        ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
}

static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
                  u32 num_wqes)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct kwqe *prod_qe;
    u16 prod, sw_prod, i;

    if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
        return -EAGAIN;     /* bnx2 is down */

    spin_lock_bh(&cp->cnic_ulp_lock);
    if (num_wqes > cnic_kwq_avail(cp) &&
        !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
        spin_unlock_bh(&cp->cnic_ulp_lock);
        return -EAGAIN;
    }

    clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);

    prod = cp->kwq_prod_idx;
    sw_prod = prod & MAX_KWQ_IDX;
    for (i = 0; i < num_wqes; i++) {
        prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
        memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
        prod++;
        sw_prod = prod & MAX_KWQ_IDX;
    }
    cp->kwq_prod_idx = prod;

    CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);

    spin_unlock_bh(&cp->cnic_ulp_lock);
    return 0;
}

static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
                   union l5cm_specific_data *l5_data)
{
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
    dma_addr_t map;

    map = ctx->kwqe_data_mapping;
    l5_data->phy_address.lo = (u64) map & 0xffffffff;
    l5_data->phy_address.hi = (u64) map >> 32;
    return ctx->kwqe_data;
}

static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
                u32 type, union l5cm_specific_data *l5_data)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct l5cm_spe kwqe;
    struct kwqe_16 *kwq[1];
    u16 type_16;
    int ret;

    kwqe.hdr.conn_and_cmd_data =
        cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
                 BNX2X_HW_CID(cp, cid)));

    type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
    type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
           SPE_HDR_FUNCTION_ID;

    kwqe.hdr.type = cpu_to_le16(type_16);
    kwqe.hdr.reserved1 = 0;
    kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
    kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);

    kwq[0] = (struct kwqe_16 *) &kwqe;

    spin_lock_bh(&cp->cnic_ulp_lock);
    ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
    spin_unlock_bh(&cp->cnic_ulp_lock);

    if (ret == 1)
        return 0;

    return ret;
}

static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
                   struct kcqe *cqes[], u32 num_cqes)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_ulp_ops *ulp_ops;

    rcu_read_lock();
    ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
    if (likely(ulp_ops)) {
        ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
                      cqes, num_cqes);
    }
    rcu_read_unlock();
}

static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
    int hq_bds, pages;
    u32 pfid = cp->pfid;

    cp->num_iscsi_tasks = req1->num_tasks_per_conn;
    cp->num_ccells = req1->num_ccells_per_conn;
    cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
                  cp->num_iscsi_tasks;
    cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
            BNX2X_ISCSI_R2TQE_SIZE;
    cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
    pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
    hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
    cp->num_cqs = req1->num_cqs;

    if (!dev->max_iscsi_conn)
        return 0;

    /* init Tstorm RAM */
    CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
          req1->rq_num_wqes);
    CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
          PAGE_SIZE);
    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
    CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
          TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
          req1->num_tasks_per_conn);

    /* init Ustorm RAM */
    CNIC_WR16(dev, BAR_USTRORM_INTMEM +
          USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
          req1->rq_buffer_size);
    CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
          PAGE_SIZE);
    CNIC_WR8(dev, BAR_USTRORM_INTMEM +
         USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
    CNIC_WR16(dev, BAR_USTRORM_INTMEM +
          USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
          req1->num_tasks_per_conn);
    CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
          req1->rq_num_wqes);
    CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
          req1->cq_num_wqes);
    CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
          cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

    /* init Xstorm RAM */
    CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
          PAGE_SIZE);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
    CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
          XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
          req1->num_tasks_per_conn);
    CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
          hq_bds);
    CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
          req1->num_tasks_per_conn);
    CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
          cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

    /* init Cstorm RAM */
    CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
          PAGE_SIZE);
    CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
         CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
    CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
          CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
          req1->num_tasks_per_conn);
    CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
          req1->cq_num_wqes);
    CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
          hq_bds);

    return 0;
}

static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
    struct cnic_local *cp = dev->cnic_priv;
    u32 pfid = cp->pfid;
    struct iscsi_kcqe kcqe;
    struct kcqe *cqes[1];

    memset(&kcqe, 0, sizeof(kcqe));
    if (!dev->max_iscsi_conn) {
        kcqe.completion_status =
            ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
        goto done;
    }

    CNIC_WR(dev, BAR_TSTRORM_INTMEM +
        TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
    CNIC_WR(dev, BAR_TSTRORM_INTMEM +
        TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
        req2->error_bit_map[1]);

    CNIC_WR16(dev, BAR_USTRORM_INTMEM +
          USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
    CNIC_WR(dev, BAR_USTRORM_INTMEM +
        USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
    CNIC_WR(dev, BAR_USTRORM_INTMEM +
        USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
        req2->error_bit_map[1]);

    CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
          CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);

    kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;

done:
    kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);

    return 0;
}

static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

    if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
        struct cnic_iscsi *iscsi = ctx->proto.iscsi;

        cnic_free_dma(dev, &iscsi->hq_info);
        cnic_free_dma(dev, &iscsi->r2tq_info);
        cnic_free_dma(dev, &iscsi->task_array_info);
        cnic_free_id(&cp->cid_tbl, ctx->cid);
    } else {
        cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
    }

    ctx->cid = 0;
}

static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
    u32 cid;
    int ret, pages;
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
    struct cnic_iscsi *iscsi = ctx->proto.iscsi;

    if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
        cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
        if (cid == -1) {
            ret = -ENOMEM;
            goto error;
        }
        ctx->cid = cid;
        return 0;
    }

    cid = cnic_alloc_new_id(&cp->cid_tbl);
    if (cid == -1) {
        ret = -ENOMEM;
        goto error;
    }

    ctx->cid = cid;
    pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;

    ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
    if (ret)
        goto error;

    pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
    ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
    if (ret)
        goto error;

    pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
    ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
    if (ret)
        goto error;

    return 0;

error:
    cnic_free_bnx2x_conn_resc(dev, l5_cid);
    return ret;
}

static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
                struct regpair *ctx_addr)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
    int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
    unsigned long align_off = 0;
    dma_addr_t ctx_map;
    void *ctx;

    if (cp->ctx_align) {
        unsigned long mask = cp->ctx_align - 1;

        if (cp->ctx_arr[blk].mapping & mask)
            align_off = cp->ctx_align -
                    (cp->ctx_arr[blk].mapping & mask);
    }
    ctx_map = cp->ctx_arr[blk].mapping + align_off +
        (off * BNX2X_CONTEXT_MEM_SIZE);
    ctx = cp->ctx_arr[blk].ctx + align_off +
          (off * BNX2X_CONTEXT_MEM_SIZE);
    if (init)
        memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);

    ctx_addr->lo = ctx_map & 0xffffffff;
    ctx_addr->hi = (u64) ctx_map >> 32;
    return ctx;
}

static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
                u32 num)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct iscsi_kwqe_conn_offload1 *req1 =
            (struct iscsi_kwqe_conn_offload1 *) wqes[0];
    struct iscsi_kwqe_conn_offload2 *req2 =
            (struct iscsi_kwqe_conn_offload2 *) wqes[1];
    struct iscsi_kwqe_conn_offload3 *req3;
    struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
    struct cnic_iscsi *iscsi = ctx->proto.iscsi;
    u32 cid = ctx->cid;
    u32 hw_cid = BNX2X_HW_CID(cp, cid);
    struct iscsi_context *ictx;
    struct regpair context_addr;
    int i, j, n = 2, n_max;
    u8 port = CNIC_PORT(cp);

    ctx->ctx_flags = 0;
    if (!req2->num_additional_wqes)
        return -EINVAL;

    n_max = req2->num_additional_wqes + 2;

    ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
    if (ictx == NULL)
        return -ENOMEM;

    req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];

    ictx->xstorm_ag_context.hq_prod = 1;

    ictx->xstorm_st_context.iscsi.first_burst_length =
        ISCSI_DEF_FIRST_BURST_LEN;
    ictx->xstorm_st_context.iscsi.max_send_pdu_length =
        ISCSI_DEF_MAX_RECV_SEG_LEN;
    ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
        req1->sq_page_table_addr_lo;
    ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
        req1->sq_page_table_addr_hi;
    ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
    ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
    ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
        iscsi->hq_info.pgtbl_map & 0xffffffff;
    ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
        (u64) iscsi->hq_info.pgtbl_map >> 32;
    ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
        iscsi->hq_info.pgtbl[0];
    ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
        iscsi->hq_info.pgtbl[1];
    ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
        iscsi->r2tq_info.pgtbl_map & 0xffffffff;
    ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
        (u64) iscsi->r2tq_info.pgtbl_map >> 32;
    ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
        iscsi->r2tq_info.pgtbl[0];
    ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
        iscsi->r2tq_info.pgtbl[1];
    ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
        iscsi->task_array_info.pgtbl_map & 0xffffffff;
    ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
        (u64) iscsi->task_array_info.pgtbl_map >> 32;
    ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
        BNX2X_ISCSI_PBL_NOT_CACHED;
    ictx->xstorm_st_context.iscsi.flags.flags |=
        XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
    ictx->xstorm_st_context.iscsi.flags.flags |=
        XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
    ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
        ETH_P_8021Q;
    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
        cp->port_mode == CHIP_2_PORT_MODE) {

        port = 0;
    }
    ictx->xstorm_st_context.common.flags =
        1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
    ictx->xstorm_st_context.common.flags =
        port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;

    ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
    /* TSTORM requires the base address of RQ DB & not PTE */
    ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
        req2->rq_page_table_addr_lo & PAGE_MASK;
    ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
        req2->rq_page_table_addr_hi;
    ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
    ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
    ictx->tstorm_st_context.tcp.flags2 |=
        TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
    ictx->tstorm_st_context.tcp.ooo_support_mode =
        TCP_TSTORM_OOO_DROP_AND_PROC_ACK;

    ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;

    ictx->ustorm_st_context.ring.rq.pbl_base.lo =
        req2->rq_page_table_addr_lo;
    ictx->ustorm_st_context.ring.rq.pbl_base.hi =
        req2->rq_page_table_addr_hi;
    ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
    ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
    ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
        iscsi->r2tq_info.pgtbl_map & 0xffffffff;
    ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
        (u64) iscsi->r2tq_info.pgtbl_map >> 32;
    ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
        iscsi->r2tq_info.pgtbl[0];
    ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
        iscsi->r2tq_info.pgtbl[1];
    ictx->ustorm_st_context.ring.cq_pbl_base.lo =
        req1->cq_page_table_addr_lo;
    ictx->ustorm_st_context.ring.cq_pbl_base.hi =
        req1->cq_page_table_addr_hi;
    ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
    ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
    ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
    ictx->ustorm_st_context.task_pbe_cache_index =
        BNX2X_ISCSI_PBL_NOT_CACHED;
    ictx->ustorm_st_context.task_pdu_cache_index =
        BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;

    for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
        if (j == 3) {
            if (n >= n_max)
                break;
            req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
            j = 0;
        }
        ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
        ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
            req3->qp_first_pte[j].hi;
        ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
            req3->qp_first_pte[j].lo;
    }

    ictx->ustorm_st_context.task_pbl_base.lo =
        iscsi->task_array_info.pgtbl_map & 0xffffffff;
    ictx->ustorm_st_context.task_pbl_base.hi =
        (u64) iscsi->task_array_info.pgtbl_map >> 32;
    ictx->ustorm_st_context.tce_phy_addr.lo =
        iscsi->task_array_info.pgtbl[0];
    ictx->ustorm_st_context.tce_phy_addr.hi =
        iscsi->task_array_info.pgtbl[1];
    ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
    ictx->ustorm_st_context.num_cqs = cp->num_cqs;
    ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
    ictx->ustorm_st_context.negotiated_rx_and_flags |=
        ISCSI_DEF_MAX_BURST_LEN;
    ictx->ustorm_st_context.negotiated_rx |=
        ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
        USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;

    ictx->cstorm_st_context.hq_pbl_base.lo =
        iscsi->hq_info.pgtbl_map & 0xffffffff;
    ictx->cstorm_st_context.hq_pbl_base.hi =
        (u64) iscsi->hq_info.pgtbl_map >> 32;
    ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
    ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
    ictx->cstorm_st_context.task_pbl_base.lo =
        iscsi->task_array_info.pgtbl_map & 0xffffffff;
    ictx->cstorm_st_context.task_pbl_base.hi =
        (u64) iscsi->task_array_info.pgtbl_map >> 32;
    /* CSTORM and USTORM initialization is different, CSTORM requires
     * CQ DB base & not PTE addr */
    ictx->cstorm_st_context.cq_db_base.lo =
        req1->cq_page_table_addr_lo & PAGE_MASK;
    ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
    ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
    ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
    for (i = 0; i < cp->num_cqs; i++) {
        ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
            ISCSI_INITIAL_SN;
        ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
            ISCSI_INITIAL_SN;
    }

    ictx->xstorm_ag_context.cdu_reserved =
        CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
                       ISCSI_CONNECTION_TYPE);
    ictx->ustorm_ag_context.cdu_usage =
        CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
                       ISCSI_CONNECTION_TYPE);
    return 0;

}

static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
                   u32 num, int *work)
{
    struct iscsi_kwqe_conn_offload1 *req1;
    struct iscsi_kwqe_conn_offload2 *req2;
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_context *ctx;
    struct iscsi_kcqe kcqe;
    struct kcqe *cqes[1];
    u32 l5_cid;
    int ret = 0;

    if (num < 2) {
        *work = num;
        return -EINVAL;
    }

    req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
    req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
    if ((num - 2) < req2->num_additional_wqes) {
        *work = num;
        return -EINVAL;
    }
    *work = 2 + req2->num_additional_wqes;

    l5_cid = req1->iscsi_conn_id;
    if (l5_cid >= MAX_ISCSI_TBL_SZ)
        return -EINVAL;

    memset(&kcqe, 0, sizeof(kcqe));
    kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
    kcqe.iscsi_conn_id = l5_cid;
    kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;

    ctx = &cp->ctx_tbl[l5_cid];
    if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
        kcqe.completion_status =
            ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
        goto done;
    }

    if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
        atomic_dec(&cp->iscsi_conn);
        goto done;
    }
    ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
    if (ret) {
        atomic_dec(&cp->iscsi_conn);
        ret = 0;
        goto done;
    }
    ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
    if (ret < 0) {
        cnic_free_bnx2x_conn_resc(dev, l5_cid);
        atomic_dec(&cp->iscsi_conn);
        goto done;
    }

    kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
    kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);

done:
    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
    return 0;
}


static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct iscsi_kwqe_conn_update *req =
        (struct iscsi_kwqe_conn_update *) kwqe;
    void *data;
    union l5cm_specific_data l5_data;
    u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
    int ret;

    if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
        return -EINVAL;

    data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
    if (!data)
        return -ENOMEM;

    memcpy(data, kwqe, sizeof(struct kwqe));

    ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
            req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
    return ret;
}

static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
    union l5cm_specific_data l5_data;
    int ret;
    u32 hw_cid;

    init_waitqueue_head(&ctx->waitq);
    ctx->wait_cond = 0;
    memset(&l5_data, 0, sizeof(l5_data));
    hw_cid = BNX2X_HW_CID(cp, ctx->cid);

    ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
                  hw_cid, NONE_CONNECTION_TYPE, &l5_data);

    if (ret == 0) {
        wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
        if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
            return -EBUSY;
    }

    return 0;
}

static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct iscsi_kwqe_conn_destroy *req =
        (struct iscsi_kwqe_conn_destroy *) kwqe;
    u32 l5_cid = req->reserved0;
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
    int ret = 0;
    struct iscsi_kcqe kcqe;
    struct kcqe *cqes[1];

    if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
        goto skip_cfc_delete;

    if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
        unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;

        if (delta > (2 * HZ))
            delta = 0;

        set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
        queue_delayed_work(cnic_wq, &cp->delete_task, delta);
        goto destroy_reply;
    }

    ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

skip_cfc_delete:
    cnic_free_bnx2x_conn_resc(dev, l5_cid);

    if (!ret) {
        atomic_dec(&cp->iscsi_conn);
        clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
    }

destroy_reply:
    memset(&kcqe, 0, sizeof(kcqe));
    kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
    kcqe.iscsi_conn_id = l5_cid;
    kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
    kcqe.iscsi_conn_context_id = req->context_id;

    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);

    return 0;
}

static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
                      struct l4_kwq_connect_req1 *kwqe1,
                      struct l4_kwq_connect_req3 *kwqe3,
                      struct l5cm_active_conn_buffer *conn_buf)
{
    struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
    struct l5cm_xstorm_conn_buffer *xstorm_buf =
        &conn_buf->xstorm_conn_buffer;
    struct l5cm_tstorm_conn_buffer *tstorm_buf =
        &conn_buf->tstorm_conn_buffer;
    struct regpair context_addr;
    u32 cid = BNX2X_SW_CID(kwqe1->cid);
    struct in6_addr src_ip, dst_ip;
    int i;
    u32 *addrp;

    addrp = (u32 *) &conn_addr->local_ip_addr;
    for (i = 0; i < 4; i++, addrp++)
        src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);

    addrp = (u32 *) &conn_addr->remote_ip_addr;
    for (i = 0; i < 4; i++, addrp++)
        dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);

    cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);

    xstorm_buf->context_addr.hi = context_addr.hi;
    xstorm_buf->context_addr.lo = context_addr.lo;
    xstorm_buf->mss = 0xffff;
    xstorm_buf->rcv_buf = kwqe3->rcv_buf;
    if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
        xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
    xstorm_buf->pseudo_header_checksum =
        swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));

    if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
        tstorm_buf->params |=
            L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
    if (kwqe3->ka_timeout) {
        tstorm_buf->ka_enable = 1;
        tstorm_buf->ka_timeout = kwqe3->ka_timeout;
        tstorm_buf->ka_interval = kwqe3->ka_interval;
        tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
    }
    tstorm_buf->max_rt_time = 0xffffffff;
}

static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 pfid = cp->pfid;
    u8 *mac = dev->mac_addr;

    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);

    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
         mac[4]);
    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
         mac[2]);
    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
    CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
         TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
         mac[0]);
}

static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
{
    struct cnic_local *cp = dev->cnic_priv;
    u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
    u16 tstorm_flags = 0;

    if (tcp_ts) {
        xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
        tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
    }

    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);

    CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
          TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
}

static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
                  u32 num, int *work)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct l4_kwq_connect_req1 *kwqe1 =
        (struct l4_kwq_connect_req1 *) wqes[0];
    struct l4_kwq_connect_req3 *kwqe3;
    struct l5cm_active_conn_buffer *conn_buf;
    struct l5cm_conn_addr_params *conn_addr;
    union l5cm_specific_data l5_data;
    u32 l5_cid = kwqe1->pg_cid;
    struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
    int ret;

    if (num < 2) {
        *work = num;
        return -EINVAL;
    }

    if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
        *work = 3;
    else
        *work = 2;

    if (num < *work) {
        *work = num;
        return -EINVAL;
    }

    if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
        netdev_err(dev->netdev, "conn_buf size too big\n");
        return -ENOMEM;
    }
    conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
    if (!conn_buf)
        return -ENOMEM;

    memset(conn_buf, 0, sizeof(*conn_buf));

    conn_addr = &conn_buf->conn_addr_buf;
    conn_addr->remote_addr_0 = csk->ha[0];
    conn_addr->remote_addr_1 = csk->ha[1];
    conn_addr->remote_addr_2 = csk->ha[2];
    conn_addr->remote_addr_3 = csk->ha[3];
    conn_addr->remote_addr_4 = csk->ha[4];
    conn_addr->remote_addr_5 = csk->ha[5];

    if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
        struct l4_kwq_connect_req2 *kwqe2 =
            (struct l4_kwq_connect_req2 *) wqes[1];

        conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
        conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
        conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;

        conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
        conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
        conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
        conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
    }
    kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];

    conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
    conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
    conn_addr->local_tcp_port = kwqe1->src_port;
    conn_addr->remote_tcp_port = kwqe1->dst_port;

    conn_addr->pmtu = kwqe3->pmtu;
    cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);

    CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
          XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);

    cnic_bnx2x_set_tcp_timestamp(dev,
        kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);

    ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
            kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
    if (!ret)
        set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);

    return ret;
}

static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
    union l5cm_specific_data l5_data;
    int ret;

    memset(&l5_data, 0, sizeof(l5_data));
    ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
            req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
    return ret;
}

static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
    union l5cm_specific_data l5_data;
    int ret;

    memset(&l5_data, 0, sizeof(l5_data));
    ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
            req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
    return ret;
}
static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
    struct l4_kcq kcqe;
    struct kcqe *cqes[1];

    memset(&kcqe, 0, sizeof(kcqe));
    kcqe.pg_host_opaque = req->host_opaque;
    kcqe.pg_cid = req->host_opaque;
    kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
    return 0;
}

static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
    struct l4_kcq kcqe;
    struct kcqe *cqes[1];

    memset(&kcqe, 0, sizeof(kcqe));
    kcqe.pg_host_opaque = req->pg_host_opaque;
    kcqe.pg_cid = req->pg_cid;
    kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
    return 0;
}

static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct fcoe_kwqe_stat *req;
    struct fcoe_stat_ramrod_params *fcoe_stat;
    union l5cm_specific_data l5_data;
    struct cnic_local *cp = dev->cnic_priv;
    int ret;
    u32 cid;

    req = (struct fcoe_kwqe_stat *) kwqe;
    cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);

    fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
    if (!fcoe_stat)
        return -ENOMEM;

    memset(fcoe_stat, 0, sizeof(*fcoe_stat));
    memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));

    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    return ret;
}

static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
                 u32 num, int *work)
{
    int ret;
    struct cnic_local *cp = dev->cnic_priv;
    u32 cid;
    struct fcoe_init_ramrod_params *fcoe_init;
    struct fcoe_kwqe_init1 *req1;
    struct fcoe_kwqe_init2 *req2;
    struct fcoe_kwqe_init3 *req3;
    union l5cm_specific_data l5_data;

    if (num < 3) {
        *work = num;
        return -EINVAL;
    }
    req1 = (struct fcoe_kwqe_init1 *) wqes[0];
    req2 = (struct fcoe_kwqe_init2 *) wqes[1];
    req3 = (struct fcoe_kwqe_init3 *) wqes[2];
    if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
        *work = 1;
        return -EINVAL;
    }
    if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
        *work = 2;
        return -EINVAL;
    }

    if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
        netdev_err(dev->netdev, "fcoe_init size too big\n");
        return -ENOMEM;
    }
    fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
    if (!fcoe_init)
        return -ENOMEM;

    memset(fcoe_init, 0, sizeof(*fcoe_init));
    memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
    memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
    memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
    fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
    fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
    fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;

    fcoe_init->sb_num = cp->status_blk_num;
    fcoe_init->eq_prod = MAX_KCQ_IDX;
    fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
    cp->kcq2.sw_prod_idx = 0;

    cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    *work = 3;
    return ret;
}

static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
                 u32 num, int *work)
{
    int ret = 0;
    u32 cid = -1, l5_cid;
    struct cnic_local *cp = dev->cnic_priv;
    struct fcoe_kwqe_conn_offload1 *req1;
    struct fcoe_kwqe_conn_offload2 *req2;
    struct fcoe_kwqe_conn_offload3 *req3;
    struct fcoe_kwqe_conn_offload4 *req4;
    struct fcoe_conn_offload_ramrod_params *fcoe_offload;
    struct cnic_context *ctx;
    struct fcoe_context *fctx;
    struct regpair ctx_addr;
    union l5cm_specific_data l5_data;
    struct fcoe_kcqe kcqe;
    struct kcqe *cqes[1];

    if (num < 4) {
        *work = num;
        return -EINVAL;
    }
    req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
    req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
    req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
    req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];

    *work = 4;

    l5_cid = req1->fcoe_conn_id;
    if (l5_cid >= dev->max_fcoe_conn)
        goto err_reply;

    l5_cid += BNX2X_FCOE_L5_CID_BASE;

    ctx = &cp->ctx_tbl[l5_cid];
    if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
        goto err_reply;

    ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
    if (ret) {
        ret = 0;
        goto err_reply;
    }
    cid = ctx->cid;

    fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
    if (fctx) {
        u32 hw_cid = BNX2X_HW_CID(cp, cid);
        u32 val;

        val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
                         FCOE_CONNECTION_TYPE);
        fctx->xstorm_ag_context.cdu_reserved = val;
        val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
                         FCOE_CONNECTION_TYPE);
        fctx->ustorm_ag_context.cdu_usage = val;
    }
    if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
        netdev_err(dev->netdev, "fcoe_offload size too big\n");
        goto err_reply;
    }
    fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
    if (!fcoe_offload)
        goto err_reply;

    memset(fcoe_offload, 0, sizeof(*fcoe_offload));
    memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
    memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
    memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
    memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));

    cid = BNX2X_HW_CID(cp, cid);
    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    if (!ret)
        set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);

    return ret;

err_reply:
    if (cid != -1)
        cnic_free_bnx2x_conn_resc(dev, l5_cid);

    memset(&kcqe, 0, sizeof(kcqe));
    kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
    kcqe.fcoe_conn_id = req1->fcoe_conn_id;
    kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;

    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
    return ret;
}

static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct fcoe_kwqe_conn_enable_disable *req;
    struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
    union l5cm_specific_data l5_data;
    int ret;
    u32 cid, l5_cid;
    struct cnic_local *cp = dev->cnic_priv;

    req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
    cid = req->context_id;
    l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;

    if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
        netdev_err(dev->netdev, "fcoe_enable size too big\n");
        return -ENOMEM;
    }
    fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
    if (!fcoe_enable)
        return -ENOMEM;

    memset(fcoe_enable, 0, sizeof(*fcoe_enable));
    memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    return ret;
}

static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct fcoe_kwqe_conn_enable_disable *req;
    struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
    union l5cm_specific_data l5_data;
    int ret;
    u32 cid, l5_cid;
    struct cnic_local *cp = dev->cnic_priv;

    req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
    cid = req->context_id;
    l5_cid = req->conn_id;
    if (l5_cid >= dev->max_fcoe_conn)
        return -EINVAL;

    l5_cid += BNX2X_FCOE_L5_CID_BASE;

    if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
        netdev_err(dev->netdev, "fcoe_disable size too big\n");
        return -ENOMEM;
    }
    fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
    if (!fcoe_disable)
        return -ENOMEM;

    memset(fcoe_disable, 0, sizeof(*fcoe_disable));
    memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    return ret;
}

static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct fcoe_kwqe_conn_destroy *req;
    union l5cm_specific_data l5_data;
    int ret;
    u32 cid, l5_cid;
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_context *ctx;
    struct fcoe_kcqe kcqe;
    struct kcqe *cqes[1];

    req = (struct fcoe_kwqe_conn_destroy *) kwqe;
    cid = req->context_id;
    l5_cid = req->conn_id;
    if (l5_cid >= dev->max_fcoe_conn)
        return -EINVAL;

    l5_cid += BNX2X_FCOE_L5_CID_BASE;

    ctx = &cp->ctx_tbl[l5_cid];

    init_waitqueue_head(&ctx->waitq);
    ctx->wait_cond = 0;

    memset(&kcqe, 0, sizeof(kcqe));
    kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
    memset(&l5_data, 0, sizeof(l5_data));
    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    if (ret == 0) {
        wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
        if (ctx->wait_cond)
            kcqe.completion_status = 0;
    }

    set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
    queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));

    kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
    kcqe.fcoe_conn_id = req->conn_id;
    kcqe.fcoe_conn_context_id = cid;

    cqes[0] = (struct kcqe *) &kcqe;
    cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
    return ret;
}

static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 i;

    for (i = start_cid; i < cp->max_cid_space; i++) {
        struct cnic_context *ctx = &cp->ctx_tbl[i];
        int j;

        while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
            msleep(10);

        for (j = 0; j < 5; j++) {
            if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
                break;
            msleep(20);
        }

        if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
            netdev_warn(dev->netdev, "CID %x not deleted\n",
                   ctx->cid);
    }
}

static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct fcoe_kwqe_destroy *req;
    union l5cm_specific_data l5_data;
    struct cnic_local *cp = dev->cnic_priv;
    int ret;
    u32 cid;

    cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);

    req = (struct fcoe_kwqe_destroy *) kwqe;
    cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);

    memset(&l5_data, 0, sizeof(l5_data));
    ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
                  FCOE_CONNECTION_TYPE, &l5_data);
    return ret;
}

static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct kcqe kcqe;
    struct kcqe *cqes[1];
    u32 cid;
    u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
    u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
    u32 kcqe_op;
    int ulp_type;

    cid = kwqe->kwqe_info0;
    memset(&kcqe, 0, sizeof(kcqe));

    if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
        u32 l5_cid = 0;

        ulp_type = CNIC_ULP_FCOE;
        if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
            struct fcoe_kwqe_conn_enable_disable *req;

            req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
            kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
            cid = req->context_id;
            l5_cid = req->conn_id;
        } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
            kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
        } else {
            return;
        }
        kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
        kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
        kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
        kcqe.kcqe_info2 = cid;
        kcqe.kcqe_info0 = l5_cid;

    } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
        ulp_type = CNIC_ULP_ISCSI;
        if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
            cid = kwqe->kwqe_info1;

        kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
        kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
        kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
        kcqe.kcqe_info2 = cid;
        cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);

    } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
        struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;

        ulp_type = CNIC_ULP_L4;
        if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
            kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
        else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
            kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
        else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
            kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
        else
            return;

        kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
                    KCQE_FLAGS_LAYER_MASK_L4;
        l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
        l4kcqe->cid = cid;
        cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
    } else {
        return;
    }

    cqes[0] = &kcqe;
    cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
}

static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
                     struct kwqe *wqes[], u32 num_wqes)
{
    int i, work, ret;
    u32 opcode;
    struct kwqe *kwqe;

    if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
        return -EAGAIN;     /* bnx2 is down */

    for (i = 0; i < num_wqes; ) {
        kwqe = wqes[i];
        opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
        work = 1;

        switch (opcode) {
        case ISCSI_KWQE_OPCODE_INIT1:
            ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
            break;
        case ISCSI_KWQE_OPCODE_INIT2:
            ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
            break;
        case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
            ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
                             num_wqes - i, &work);
            break;
        case ISCSI_KWQE_OPCODE_UPDATE_CONN:
            ret = cnic_bnx2x_iscsi_update(dev, kwqe);
            break;
        case ISCSI_KWQE_OPCODE_DESTROY_CONN:
            ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
            break;
        case L4_KWQE_OPCODE_VALUE_CONNECT1:
            ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
                         &work);
            break;
        case L4_KWQE_OPCODE_VALUE_CLOSE:
            ret = cnic_bnx2x_close(dev, kwqe);
            break;
        case L4_KWQE_OPCODE_VALUE_RESET:
            ret = cnic_bnx2x_reset(dev, kwqe);
            break;
        case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
            ret = cnic_bnx2x_offload_pg(dev, kwqe);
            break;
        case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
            ret = cnic_bnx2x_update_pg(dev, kwqe);
            break;
        case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
            ret = 0;
            break;
        default:
            ret = 0;
            netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
                   opcode);
            break;
        }
        if (ret < 0) {
            netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
                   opcode);

            /* Possibly bnx2x parity error, send completion
             * to ulp drivers with error code to speed up
             * cleanup and reset recovery.
             */
            if (ret == -EIO || ret == -EAGAIN)
                cnic_bnx2x_kwqe_err(dev, kwqe);
        }
        i += work;
    }
    return 0;
}

static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
                    struct kwqe *wqes[], u32 num_wqes)
{
    struct cnic_local *cp = dev->cnic_priv;
    int i, work, ret;
    u32 opcode;
    struct kwqe *kwqe;

    if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
        return -EAGAIN;     /* bnx2 is down */

    if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
        return -EINVAL;

    for (i = 0; i < num_wqes; ) {
        kwqe = wqes[i];
        opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
        work = 1;

        switch (opcode) {
        case FCOE_KWQE_OPCODE_INIT1:
            ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
                            num_wqes - i, &work);
            break;
        case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
            ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
                            num_wqes - i, &work);
            break;
        case FCOE_KWQE_OPCODE_ENABLE_CONN:
            ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
            break;
        case FCOE_KWQE_OPCODE_DISABLE_CONN:
            ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
            break;
        case FCOE_KWQE_OPCODE_DESTROY_CONN:
            ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
            break;
        case FCOE_KWQE_OPCODE_DESTROY:
            ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
            break;
        case FCOE_KWQE_OPCODE_STAT:
            ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
            break;
        default:
            ret = 0;
            netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
                   opcode);
            break;
        }
        if (ret < 0) {
            netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
                   opcode);

            /* Possibly bnx2x parity error, send completion
             * to ulp drivers with error code to speed up
             * cleanup and reset recovery.
             */
            if (ret == -EIO || ret == -EAGAIN)
                cnic_bnx2x_kwqe_err(dev, kwqe);
        }
        i += work;
    }
    return 0;
}

static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
                   u32 num_wqes)
{
    int ret = -EINVAL;
    u32 layer_code;

    if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
        return -EAGAIN;     /* bnx2x is down */

    if (!num_wqes)
        return 0;

    layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
    switch (layer_code) {
    case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
    case KWQE_FLAGS_LAYER_MASK_L4:
    case KWQE_FLAGS_LAYER_MASK_L2:
        ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
        break;

    case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
        ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
        break;
    }
    return ret;
}

static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
{
    if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
        return KCQE_FLAGS_LAYER_MASK_L4;

    return opflag & KCQE_FLAGS_LAYER_MASK;
}

static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
    struct cnic_local *cp = dev->cnic_priv;
    int i, j, comp = 0;

    i = 0;
    j = 1;
    while (num_cqes) {
        struct cnic_ulp_ops *ulp_ops;
        int ulp_type;
        u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
        u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);

        if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
            comp++;

        while (j < num_cqes) {
            u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;

            if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
                break;

            if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
                comp++;
            j++;
        }

        if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
            ulp_type = CNIC_ULP_RDMA;
        else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
            ulp_type = CNIC_ULP_ISCSI;
        else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
            ulp_type = CNIC_ULP_FCOE;
        else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
            ulp_type = CNIC_ULP_L4;
        else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
            goto end;
        else {
            netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
                   kcqe_op_flag);
            goto end;
        }

        rcu_read_lock();
        ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
        if (likely(ulp_ops)) {
            ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
                          cp->completed_kcq + i, j);
        }
        rcu_read_unlock();
end:
        num_cqes -= j;
        i += j;
        j = 1;
    }
    if (unlikely(comp))
        cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
}

static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
{
    struct cnic_local *cp = dev->cnic_priv;
    u16 i, ri, hw_prod, last;
    struct kcqe *kcqe;
    int kcqe_cnt = 0, last_cnt = 0;

    i = ri = last = info->sw_prod_idx;
    ri &= MAX_KCQ_IDX;
    hw_prod = *info->hw_prod_idx_ptr;
    hw_prod = info->hw_idx(hw_prod);

    while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
        kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
        cp->completed_kcq[kcqe_cnt++] = kcqe;
        i = info->next_idx(i);
        ri = i & MAX_KCQ_IDX;
        if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
            last_cnt = kcqe_cnt;
            last = i;
        }
    }

    info->sw_prod_idx = last;
    return last_cnt;
}

static int cnic_l2_completion(struct cnic_local *cp)
{
    u16 hw_cons, sw_cons;
    struct cnic_uio_dev *udev = cp->udev;
    union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
                    (udev->l2_ring + (2 * BCM_PAGE_SIZE));
    u32 cmd;
    int comp = 0;

    if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
        return 0;

    hw_cons = *cp->rx_cons_ptr;
    if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
        hw_cons++;

    sw_cons = cp->rx_cons;
    while (sw_cons != hw_cons) {
        u8 cqe_fp_flags;

        cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
        cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
        if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
            cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
            cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
            if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
                cmd == RAMROD_CMD_ID_ETH_HALT)
                comp++;
        }
        sw_cons = BNX2X_NEXT_RCQE(sw_cons);
    }
    return comp;
}

static void cnic_chk_pkt_rings(struct cnic_local *cp)
{
    u16 rx_cons, tx_cons;
    int comp = 0;

    if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
        return;

    rx_cons = *cp->rx_cons_ptr;
    tx_cons = *cp->tx_cons_ptr;
    if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
        if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
            comp = cnic_l2_completion(cp);

        cp->tx_cons = tx_cons;
        cp->rx_cons = rx_cons;

        if (cp->udev)
            uio_event_notify(&cp->udev->cnic_uinfo);
    }
    if (comp)
        clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
}

static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
    int kcqe_cnt;

    /* status block index must be read before reading other fields */
    rmb();
    cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

    while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {

        service_kcqes(dev, kcqe_cnt);

        /* Tell compiler that status_blk fields can change. */
        barrier();
        status_idx = (u16) *cp->kcq1.status_idx_ptr;
        /* status block index must be read first */
        rmb();
        cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
    }

    CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);

    cnic_chk_pkt_rings(cp);

    return status_idx;
}

static int cnic_service_bnx2(void *data, void *status_blk)
{
    struct cnic_dev *dev = data;

    if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
        struct status_block *sblk = status_blk;

        return sblk->status_idx;
    }

    return cnic_service_bnx2_queues(dev);
}

static void cnic_service_bnx2_msix(unsigned long data)
{
    struct cnic_dev *dev = (struct cnic_dev *) data;
    struct cnic_local *cp = dev->cnic_priv;

    cp->last_status_idx = cnic_service_bnx2_queues(dev);

    CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
        BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}

static void cnic_doirq(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
        u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;

        prefetch(cp->status_blk.gen);
        prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);

        tasklet_schedule(&cp->cnic_irq_task);
    }
}

static irqreturn_t cnic_irq(int irq, void *dev_instance)
{
    struct cnic_dev *dev = dev_instance;
    struct cnic_local *cp = dev->cnic_priv;

    if (cp->ack_int)
        cp->ack_int(dev);

    cnic_doirq(dev);

    return IRQ_HANDLED;
}

static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
                      u16 index, u8 op, u8 update)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
               COMMAND_REG_INT_ACK);
    struct igu_ack_register igu_ack;

    igu_ack.status_block_index = index;
    igu_ack.sb_id_and_flags =
            ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
             (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
             (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
             (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));

    CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
}

static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
                u16 index, u8 op, u8 update)
{
    struct igu_regular cmd_data;
    u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;

    cmd_data.sb_id_and_flags =
        (index << IGU_REGULAR_SB_INDEX_SHIFT) |
        (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
        (update << IGU_REGULAR_BUPDATE_SHIFT) |
        (op << IGU_REGULAR_ENABLE_INT_SHIFT);


    CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
}

static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
               IGU_INT_DISABLE, 0);
}

static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
            IGU_INT_DISABLE, 0);
}

static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
{
    struct cnic_local *cp = dev->cnic_priv;

    cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
               IGU_INT_ENABLE, 1);
}

static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
{
    struct cnic_local *cp = dev->cnic_priv;

    cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
            IGU_INT_ENABLE, 1);
}

static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
{
    u32 last_status = *info->status_idx_ptr;
    int kcqe_cnt;

    /* status block index must be read before reading the KCQ */
    rmb();
    while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {

        service_kcqes(dev, kcqe_cnt);

        /* Tell compiler that sblk fields can change. */
        barrier();

        last_status = *info->status_idx_ptr;
        /* status block index must be read before reading the KCQ */
        rmb();
    }
    return last_status;
}

static void cnic_service_bnx2x_bh(unsigned long data)
{
    struct cnic_dev *dev = (struct cnic_dev *) data;
    struct cnic_local *cp = dev->cnic_priv;
    u32 status_idx, new_status_idx;

    if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
        return;

    while (1) {
        status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);

        CNIC_WR16(dev, cp->kcq1.io_addr,
              cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);

        if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE) {
            cp->arm_int(dev, status_idx);
            break;
        }

        new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);

        if (new_status_idx != status_idx)
            continue;

        CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
              MAX_KCQ_IDX);

        cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
                status_idx, IGU_INT_ENABLE, 1);

        break;
    }
}

static int cnic_service_bnx2x(void *data, void *status_blk)
{
    struct cnic_dev *dev = data;
    struct cnic_local *cp = dev->cnic_priv;

    if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
        cnic_doirq(dev);

    cnic_chk_pkt_rings(cp);

    return 0;
}

static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
{
    struct cnic_ulp_ops *ulp_ops;

    if (if_type == CNIC_ULP_ISCSI)
        cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);

    mutex_lock(&cnic_lock);
    ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
                        lockdep_is_held(&cnic_lock));
    if (!ulp_ops) {
        mutex_unlock(&cnic_lock);
        return;
    }
    set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
    mutex_unlock(&cnic_lock);

    if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
        ulp_ops->cnic_stop(cp->ulp_handle[if_type]);

    clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}

static void cnic_ulp_stop(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int if_type;

    for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
        cnic_ulp_stop_one(cp, if_type);
}

static void cnic_ulp_start(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int if_type;

    for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
        struct cnic_ulp_ops *ulp_ops;

        mutex_lock(&cnic_lock);
        ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
                            lockdep_is_held(&cnic_lock));
        if (!ulp_ops || !ulp_ops->cnic_start) {
            mutex_unlock(&cnic_lock);
            continue;
        }
        set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
        mutex_unlock(&cnic_lock);

        if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
            ulp_ops->cnic_start(cp->ulp_handle[if_type]);

        clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
    }
}

static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_ulp_ops *ulp_ops;
    int rc;

    mutex_lock(&cnic_lock);
    ulp_ops = cnic_ulp_tbl_prot(ulp_type);
    if (ulp_ops && ulp_ops->cnic_get_stats)
        rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
    else
        rc = -ENODEV;
    mutex_unlock(&cnic_lock);
    return rc;
}

static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
    struct cnic_dev *dev = data;
    int ulp_type = CNIC_ULP_ISCSI;

    switch (info->cmd) {
    case CNIC_CTL_STOP_CMD:
        cnic_hold(dev);

        cnic_ulp_stop(dev);
        cnic_stop_hw(dev);

        cnic_put(dev);
        break;
    case CNIC_CTL_START_CMD:
        cnic_hold(dev);

        if (!cnic_start_hw(dev))
            cnic_ulp_start(dev);

        cnic_put(dev);
        break;
    case CNIC_CTL_STOP_ISCSI_CMD: {
        struct cnic_local *cp = dev->cnic_priv;
        set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
        queue_delayed_work(cnic_wq, &cp->delete_task, 0);
        break;
    }
    case CNIC_CTL_COMPLETION_CMD: {
        struct cnic_ctl_completion *comp = &info->data.comp;
        u32 cid = BNX2X_SW_CID(comp->cid);
        u32 l5_cid;
        struct cnic_local *cp = dev->cnic_priv;

        if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
            break;

        if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
            struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

            if (unlikely(comp->error)) {
                set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
                netdev_err(dev->netdev,
                       "CID %x CFC delete comp error %x\n",
                       cid, comp->error);
            }

            ctx->wait_cond = 1;
            wake_up(&ctx->waitq);
        }
        break;
    }
    case CNIC_CTL_FCOE_STATS_GET_CMD:
        ulp_type = CNIC_ULP_FCOE;
        /* fall through */
    case CNIC_CTL_ISCSI_STATS_GET_CMD:
        cnic_hold(dev);
        cnic_copy_ulp_stats(dev, ulp_type);
        cnic_put(dev);
        break;

    default:
        return -EINVAL;
    }
    return 0;
}

static void cnic_ulp_init(struct cnic_dev *dev)
{
    int i;
    struct cnic_local *cp = dev->cnic_priv;

    for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
        struct cnic_ulp_ops *ulp_ops;

        mutex_lock(&cnic_lock);
        ulp_ops = cnic_ulp_tbl_prot(i);
        if (!ulp_ops || !ulp_ops->cnic_init) {
            mutex_unlock(&cnic_lock);
            continue;
        }
        ulp_get(ulp_ops);
        mutex_unlock(&cnic_lock);

        if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
            ulp_ops->cnic_init(dev);

        ulp_put(ulp_ops);
    }
}

static void cnic_ulp_exit(struct cnic_dev *dev)
{
    int i;
    struct cnic_local *cp = dev->cnic_priv;

    for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
        struct cnic_ulp_ops *ulp_ops;

        mutex_lock(&cnic_lock);
        ulp_ops = cnic_ulp_tbl_prot(i);
        if (!ulp_ops || !ulp_ops->cnic_exit) {
            mutex_unlock(&cnic_lock);
            continue;
        }
        ulp_get(ulp_ops);
        mutex_unlock(&cnic_lock);

        if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
            ulp_ops->cnic_exit(dev);

        ulp_put(ulp_ops);
    }
}

static int cnic_cm_offload_pg(struct cnic_sock *csk)
{
    struct cnic_dev *dev = csk->dev;
    struct l4_kwq_offload_pg *l4kwqe;
    struct kwqe *wqes[1];

    l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
    memset(l4kwqe, 0, sizeof(*l4kwqe));
    wqes[0] = (struct kwqe *) l4kwqe;

    l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
    l4kwqe->flags =
        L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
    l4kwqe->l2hdr_nbytes = ETH_HLEN;

    l4kwqe->da0 = csk->ha[0];
    l4kwqe->da1 = csk->ha[1];
    l4kwqe->da2 = csk->ha[2];
    l4kwqe->da3 = csk->ha[3];
    l4kwqe->da4 = csk->ha[4];
    l4kwqe->da5 = csk->ha[5];

    l4kwqe->sa0 = dev->mac_addr[0];
    l4kwqe->sa1 = dev->mac_addr[1];
    l4kwqe->sa2 = dev->mac_addr[2];
    l4kwqe->sa3 = dev->mac_addr[3];
    l4kwqe->sa4 = dev->mac_addr[4];
    l4kwqe->sa5 = dev->mac_addr[5];

    l4kwqe->etype = ETH_P_IP;
    l4kwqe->ipid_start = DEF_IPID_START;
    l4kwqe->host_opaque = csk->l5_cid;

    if (csk->vlan_id) {
        l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
        l4kwqe->vlan_tag = csk->vlan_id;
        l4kwqe->l2hdr_nbytes += 4;
    }

    return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_update_pg(struct cnic_sock *csk)
{
    struct cnic_dev *dev = csk->dev;
    struct l4_kwq_update_pg *l4kwqe;
    struct kwqe *wqes[1];

    l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
    memset(l4kwqe, 0, sizeof(*l4kwqe));
    wqes[0] = (struct kwqe *) l4kwqe;

    l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
    l4kwqe->flags =
        L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
    l4kwqe->pg_cid = csk->pg_cid;

    l4kwqe->da0 = csk->ha[0];
    l4kwqe->da1 = csk->ha[1];
    l4kwqe->da2 = csk->ha[2];
    l4kwqe->da3 = csk->ha[3];
    l4kwqe->da4 = csk->ha[4];
    l4kwqe->da5 = csk->ha[5];

    l4kwqe->pg_host_opaque = csk->l5_cid;
    l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;

    return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_upload_pg(struct cnic_sock *csk)
{
    struct cnic_dev *dev = csk->dev;
    struct l4_kwq_upload *l4kwqe;
    struct kwqe *wqes[1];

    l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
    memset(l4kwqe, 0, sizeof(*l4kwqe));
    wqes[0] = (struct kwqe *) l4kwqe;

    l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
    l4kwqe->flags =
        L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
    l4kwqe->cid = csk->pg_cid;

    return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_conn_req(struct cnic_sock *csk)
{
    struct cnic_dev *dev = csk->dev;
    struct l4_kwq_connect_req1 *l4kwqe1;
    struct l4_kwq_connect_req2 *l4kwqe2;
    struct l4_kwq_connect_req3 *l4kwqe3;
    struct kwqe *wqes[3];
    u8 tcp_flags = 0;
    int num_wqes = 2;

    l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
    l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
    l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
    memset(l4kwqe1, 0, sizeof(*l4kwqe1));
    memset(l4kwqe2, 0, sizeof(*l4kwqe2));
    memset(l4kwqe3, 0, sizeof(*l4kwqe3));

    l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
    l4kwqe3->flags =
        L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
    l4kwqe3->ka_timeout = csk->ka_timeout;
    l4kwqe3->ka_interval = csk->ka_interval;
    l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
    l4kwqe3->tos = csk->tos;
    l4kwqe3->ttl = csk->ttl;
    l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
    l4kwqe3->pmtu = csk->mtu;
    l4kwqe3->rcv_buf = csk->rcv_buf;
    l4kwqe3->snd_buf = csk->snd_buf;
    l4kwqe3->seed = csk->seed;

    wqes[0] = (struct kwqe *) l4kwqe1;
    if (test_bit(SK_F_IPV6, &csk->flags)) {
        wqes[1] = (struct kwqe *) l4kwqe2;
        wqes[2] = (struct kwqe *) l4kwqe3;
        num_wqes = 3;

        l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
        l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
        l4kwqe2->flags =
            L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
            L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
        l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
        l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
        l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
        l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
        l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
        l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
        l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
                   sizeof(struct tcphdr);
    } else {
        wqes[1] = (struct kwqe *) l4kwqe3;
        l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
                   sizeof(struct tcphdr);
    }

    l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
    l4kwqe1->flags =
        (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
         L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
    l4kwqe1->cid = csk->cid;
    l4kwqe1->pg_cid = csk->pg_cid;
    l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
    l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
    l4kwqe1->src_port = be16_to_cpu(csk->src_port);
    l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
    if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
        tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
    if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
        tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
    if (csk->tcp_flags & SK_TCP_NAGLE)
        tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
    if (csk->tcp_flags & SK_TCP_TIMESTAMP)
        tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
    if (csk->tcp_flags & SK_TCP_SACK)
        tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
    if (csk->tcp_flags & SK_TCP_SEG_SCALING)
        tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;

    l4kwqe1->tcp_flags = tcp_flags;

    return dev->submit_kwqes(dev, wqes, num_wqes);
}

static int cnic_cm_close_req(struct cnic_sock *csk)
{
    struct cnic_dev *dev = csk->dev;
    struct l4_kwq_close_req *l4kwqe;
    struct kwqe *wqes[1];

    l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
    memset(l4kwqe, 0, sizeof(*l4kwqe));
    wqes[0] = (struct kwqe *) l4kwqe;

    l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
    l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
    l4kwqe->cid = csk->cid;

    return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_abort_req(struct cnic_sock *csk)
{
    struct cnic_dev *dev = csk->dev;
    struct l4_kwq_reset_req *l4kwqe;
    struct kwqe *wqes[1];

    l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
    memset(l4kwqe, 0, sizeof(*l4kwqe));
    wqes[0] = (struct kwqe *) l4kwqe;

    l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
    l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
    l4kwqe->cid = csk->cid;

    return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
              u32 l5_cid, struct cnic_sock **csk, void *context)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_sock *csk1;

    if (l5_cid >= MAX_CM_SK_TBL_SZ)
        return -EINVAL;

    if (cp->ctx_tbl) {
        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

        if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
            return -EAGAIN;
    }

    csk1 = &cp->csk_tbl[l5_cid];
    if (atomic_read(&csk1->ref_count))
        return -EAGAIN;

    if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
        return -EBUSY;

    csk1->dev = dev;
    csk1->cid = cid;
    csk1->l5_cid = l5_cid;
    csk1->ulp_type = ulp_type;
    csk1->context = context;

    csk1->ka_timeout = DEF_KA_TIMEOUT;
    csk1->ka_interval = DEF_KA_INTERVAL;
    csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
    csk1->tos = DEF_TOS;
    csk1->ttl = DEF_TTL;
    csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
    csk1->rcv_buf = DEF_RCV_BUF;
    csk1->snd_buf = DEF_SND_BUF;
    csk1->seed = DEF_SEED;

    *csk = csk1;
    return 0;
}

static void cnic_cm_cleanup(struct cnic_sock *csk)
{
    if (csk->src_port) {
        struct cnic_dev *dev = csk->dev;
        struct cnic_local *cp = dev->cnic_priv;

        cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
        csk->src_port = 0;
    }
}

static void cnic_close_conn(struct cnic_sock *csk)
{
    if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
        cnic_cm_upload_pg(csk);
        clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
    }
    cnic_cm_cleanup(csk);
}

static int cnic_cm_destroy(struct cnic_sock *csk)
{
    if (!cnic_in_use(csk))
        return -EINVAL;

    csk_hold(csk);
    clear_bit(SK_F_INUSE, &csk->flags);
    smp_mb__after_clear_bit();
    while (atomic_read(&csk->ref_count) != 1)
        msleep(1);
    cnic_cm_cleanup(csk);

    csk->flags = 0;
    csk_put(csk);
    return 0;
}

static inline u16 cnic_get_vlan(struct net_device *dev,
                struct net_device **vlan_dev)
{
    if (dev->priv_flags & IFF_802_1Q_VLAN) {
        *vlan_dev = vlan_dev_real_dev(dev);
        return vlan_dev_vlan_id(dev);
    }
    *vlan_dev = dev;
    return 0;
}

static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
                 struct dst_entry **dst)
{
#if defined(CONFIG_INET)
    struct rtable *rt;

    rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
    if (!IS_ERR(rt)) {
        *dst = &rt->dst;
        return 0;
    }
    return PTR_ERR(rt);
#else
    return -ENETUNREACH;
#endif
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
                 struct dst_entry **dst)
{
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
    struct flowi6 fl6;

    memset(&fl6, 0, sizeof(fl6));
    fl6.daddr = dst_addr->sin6_addr;
    if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
        fl6.flowi6_oif = dst_addr->sin6_scope_id;

    *dst = ip6_route_output(&init_net, NULL, &fl6);
    if ((*dst)->error) {
        dst_release(*dst);
        *dst = NULL;
        return -ENETUNREACH;
    } else
        return 0;
#endif

    return -ENETUNREACH;
}

static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
                       int ulp_type)
{
    struct cnic_dev *dev = NULL;
    struct dst_entry *dst;
    struct net_device *netdev = NULL;
    int err = -ENETUNREACH;

    if (dst_addr->sin_family == AF_INET)
        err = cnic_get_v4_route(dst_addr, &dst);
    else if (dst_addr->sin_family == AF_INET6) {
        struct sockaddr_in6 *dst_addr6 =
            (struct sockaddr_in6 *) dst_addr;

        err = cnic_get_v6_route(dst_addr6, &dst);
    } else
        return NULL;

    if (err)
        return NULL;

    if (!dst->dev)
        goto done;

    cnic_get_vlan(dst->dev, &netdev);

    dev = cnic_from_netdev(netdev);

done:
    dst_release(dst);
    if (dev)
        cnic_put(dev);
    return dev;
}

static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
    struct cnic_dev *dev = csk->dev;
    struct cnic_local *cp = dev->cnic_priv;

    return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
}

static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
    struct cnic_dev *dev = csk->dev;
    struct cnic_local *cp = dev->cnic_priv;
    int is_v6, rc = 0;
    struct dst_entry *dst = NULL;
    struct net_device *realdev;
    __be16 local_port;
    u32 port_id;

    if (saddr->local.v6.sin6_family == AF_INET6 &&
        saddr->remote.v6.sin6_family == AF_INET6)
        is_v6 = 1;
    else if (saddr->local.v4.sin_family == AF_INET &&
         saddr->remote.v4.sin_family == AF_INET)
        is_v6 = 0;
    else
        return -EINVAL;

    clear_bit(SK_F_IPV6, &csk->flags);

    if (is_v6) {
        set_bit(SK_F_IPV6, &csk->flags);
        cnic_get_v6_route(&saddr->remote.v6, &dst);

        memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
               sizeof(struct in6_addr));
        csk->dst_port = saddr->remote.v6.sin6_port;
        local_port = saddr->local.v6.sin6_port;

    } else {
        cnic_get_v4_route(&saddr->remote.v4, &dst);

        csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
        csk->dst_port = saddr->remote.v4.sin_port;
        local_port = saddr->local.v4.sin_port;
    }

    csk->vlan_id = 0;
    csk->mtu = dev->netdev->mtu;
    if (dst && dst->dev) {
        u16 vlan = cnic_get_vlan(dst->dev, &realdev);
        if (realdev == dev->netdev) {
            csk->vlan_id = vlan;
            csk->mtu = dst_mtu(dst);
        }
    }

    port_id = be16_to_cpu(local_port);
    if (port_id >= CNIC_LOCAL_PORT_MIN &&
        port_id < CNIC_LOCAL_PORT_MAX) {
        if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
            port_id = 0;
    } else
        port_id = 0;

    if (!port_id) {
        port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
        if (port_id == -1) {
            rc = -ENOMEM;
            goto err_out;
        }
        local_port = cpu_to_be16(port_id);
    }
    csk->src_port = local_port;

err_out:
    dst_release(dst);
    return rc;
}

static void cnic_init_csk_state(struct cnic_sock *csk)
{
    csk->state = 0;
    clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
    clear_bit(SK_F_CLOSING, &csk->flags);
}

static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
    struct cnic_local *cp = csk->dev->cnic_priv;
    int err = 0;

    if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
        return -EOPNOTSUPP;

    if (!cnic_in_use(csk))
        return -EINVAL;

    if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
        return -EINVAL;

    cnic_init_csk_state(csk);

    err = cnic_get_route(csk, saddr);
    if (err)
        goto err_out;

    err = cnic_resolve_addr(csk, saddr);
    if (!err)
        return 0;

err_out:
    clear_bit(SK_F_CONNECT_START, &csk->flags);
    return err;
}

static int cnic_cm_abort(struct cnic_sock *csk)
{
    struct cnic_local *cp = csk->dev->cnic_priv;
    u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;

    if (!cnic_in_use(csk))
        return -EINVAL;

    if (cnic_abort_prep(csk))
        return cnic_cm_abort_req(csk);

    /* Getting here means that we haven't started connect, or
     * connect was not successful.
     */

    cp->close_conn(csk, opcode);
    if (csk->state != opcode)
        return -EALREADY;

    return 0;
}

static int cnic_cm_close(struct cnic_sock *csk)
{
    if (!cnic_in_use(csk))
        return -EINVAL;

    if (cnic_close_prep(csk)) {
        csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
        return cnic_cm_close_req(csk);
    } else {
        return -EALREADY;
    }
    return 0;
}

static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
               u8 opcode)
{
    struct cnic_ulp_ops *ulp_ops;
    int ulp_type = csk->ulp_type;

    rcu_read_lock();
    ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
    if (ulp_ops) {
        if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
            ulp_ops->cm_connect_complete(csk);
        else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
            ulp_ops->cm_close_complete(csk);
        else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
            ulp_ops->cm_remote_abort(csk);
        else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
            ulp_ops->cm_abort_complete(csk);
        else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
            ulp_ops->cm_remote_close(csk);
    }
    rcu_read_unlock();
}

static int cnic_cm_set_pg(struct cnic_sock *csk)
{
    if (cnic_offld_prep(csk)) {
        if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
            cnic_cm_update_pg(csk);
        else
            cnic_cm_offload_pg(csk);
    }
    return 0;
}

static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 l5_cid = kcqe->pg_host_opaque;
    u8 opcode = kcqe->op_code;
    struct cnic_sock *csk = &cp->csk_tbl[l5_cid];

    csk_hold(csk);
    if (!cnic_in_use(csk))
        goto done;

    if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
        clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
        goto done;
    }
    /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
    if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
        clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
        cnic_cm_upcall(cp, csk,
                   L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
        goto done;
    }

    csk->pg_cid = kcqe->pg_cid;
    set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
    cnic_cm_conn_req(csk);

done:
    csk_put(csk);
}

static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
    u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
    struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

    ctx->timestamp = jiffies;
    ctx->wait_cond = 1;
    wake_up(&ctx->waitq);
}

static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
    u8 opcode = l4kcqe->op_code;
    u32 l5_cid;
    struct cnic_sock *csk;

    if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
        cnic_process_fcoe_term_conn(dev, kcqe);
        return;
    }
    if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
        opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
        cnic_cm_process_offld_pg(dev, l4kcqe);
        return;
    }

    l5_cid = l4kcqe->conn_id;
    if (opcode & 0x80)
        l5_cid = l4kcqe->cid;
    if (l5_cid >= MAX_CM_SK_TBL_SZ)
        return;

    csk = &cp->csk_tbl[l5_cid];
    csk_hold(csk);

    if (!cnic_in_use(csk)) {
        csk_put(csk);
        return;
    }

    switch (opcode) {
    case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
        if (l4kcqe->status != 0) {
            clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
            cnic_cm_upcall(cp, csk,
                       L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
        }
        break;
    case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
        if (l4kcqe->status == 0)
            set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
        else if (l4kcqe->status ==
             L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
            set_bit(SK_F_HW_ERR, &csk->flags);

        smp_mb__before_clear_bit();
        clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
        cnic_cm_upcall(cp, csk, opcode);
        break;

    case L5CM_RAMROD_CMD_ID_CLOSE:
        if (l4kcqe->status != 0) {
            netdev_warn(dev->netdev, "RAMROD CLOSE compl with "
                    "status 0x%x\n", l4kcqe->status);
            opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
            /* Fall through */
        } else {
            break;
        }
    case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
    case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
    case L4_KCQE_OPCODE_VALUE_RESET_COMP:
    case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
    case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
        if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
            set_bit(SK_F_HW_ERR, &csk->flags);

        cp->close_conn(csk, opcode);
        break;

    case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
        /* after we already sent CLOSE_REQ */
        if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
            !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
            csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
            cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
        else
            cnic_cm_upcall(cp, csk, opcode);
        break;
    }
    csk_put(csk);
}

static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
{
    struct cnic_dev *dev = data;
    int i;

    for (i = 0; i < num; i++)
        cnic_cm_process_kcqe(dev, kcqe[i]);
}

static struct cnic_ulp_ops cm_ulp_ops = {
    .indicate_kcqes     = cnic_cm_indicate_kcqe,
};

static void cnic_cm_free_mem(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    kfree(cp->csk_tbl);
    cp->csk_tbl = NULL;
    cnic_free_id_tbl(&cp->csk_port_tbl);
}

static int cnic_cm_alloc_mem(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 port_id;

    cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
                  GFP_KERNEL);
    if (!cp->csk_tbl)
        return -ENOMEM;

    port_id = random32();
    port_id %= CNIC_LOCAL_PORT_RANGE;
    if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
                 CNIC_LOCAL_PORT_MIN, port_id)) {
        cnic_cm_free_mem(dev);
        return -ENOMEM;
    }
    return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
    if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
        /* Unsolicited RESET_COMP or RESET_RECEIVED */
        opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
        csk->state = opcode;
    }

    /* 1. If event opcode matches the expected event in csk->state
     * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
     *    event
     * 3. If the expected event is 0, meaning the connection was never
     *    never established, we accept the opcode from cm_abort.
     */
    if (opcode == csk->state || csk->state == 0 ||
        csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
        csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
        if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
            if (csk->state == 0)
                csk->state = opcode;
            return 1;
        }
    }
    return 0;
}

static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
{
    struct cnic_dev *dev = csk->dev;
    struct cnic_local *cp = dev->cnic_priv;

    if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
        cnic_cm_upcall(cp, csk, opcode);
        return;
    }

    clear_bit(SK_F_CONNECT_START, &csk->flags);
    cnic_close_conn(csk);
    csk->state = opcode;
    cnic_cm_upcall(cp, csk, opcode);
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
{
    u32 seed;

    seed = random32();
    cnic_ctx_wr(dev, 45, 0, seed);
    return 0;
}

static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
{
    struct cnic_dev *dev = csk->dev;
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
    union l5cm_specific_data l5_data;
    u32 cmd = 0;
    int close_complete = 0;

    switch (opcode) {
    case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
    case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
    case L4_KCQE_OPCODE_VALUE_RESET_COMP:
        if (cnic_ready_to_close(csk, opcode)) {
            if (test_bit(SK_F_HW_ERR, &csk->flags))
                close_complete = 1;
            else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
                cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
            else
                close_complete = 1;
        }
        break;
    case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
        cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
        break;
    case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
        close_complete = 1;
        break;
    }
    if (cmd) {
        memset(&l5_data, 0, sizeof(l5_data));

        cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
                    &l5_data);
    } else if (close_complete) {
        ctx->timestamp = jiffies;
        cnic_close_conn(csk);
        cnic_cm_upcall(cp, csk, csk->state);
    }
}

static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    if (!cp->ctx_tbl)
        return;

    if (!netif_running(dev->netdev))
        return;

    cnic_bnx2x_delete_wait(dev, 0);

    cancel_delayed_work(&cp->delete_task);
    flush_workqueue(cnic_wq);

    if (atomic_read(&cp->iscsi_conn) != 0)
        netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
                atomic_read(&cp->iscsi_conn));
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 pfid = cp->pfid;
    u32 port = CNIC_PORT(cp);

    cnic_init_bnx2x_mac(dev);
    cnic_bnx2x_set_tcp_timestamp(dev, 1);

    CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
          XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);

    CNIC_WR(dev, BAR_XSTRORM_INTMEM +
        XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
    CNIC_WR(dev, BAR_XSTRORM_INTMEM +
        XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
        DEF_MAX_DA_COUNT);

    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
    CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
         XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
    CNIC_WR(dev, BAR_XSTRORM_INTMEM +
        XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);

    CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
        DEF_MAX_CWND);
    return 0;
}

static void cnic_delete_task(struct work_struct *work)
{
    struct cnic_local *cp;
    struct cnic_dev *dev;
    u32 i;
    int need_resched = 0;

    cp = container_of(work, struct cnic_local, delete_task.work);
    dev = cp->dev;

    if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
        struct drv_ctl_info info;

        cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);

        info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
        cp->ethdev->drv_ctl(dev->netdev, &info);
    }

    for (i = 0; i < cp->max_cid_space; i++) {
        struct cnic_context *ctx = &cp->ctx_tbl[i];
        int err;

        if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
            !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
            continue;

        if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
            need_resched = 1;
            continue;
        }

        if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
            continue;

        err = cnic_bnx2x_destroy_ramrod(dev, i);

        cnic_free_bnx2x_conn_resc(dev, i);
        if (!err) {
            if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
                atomic_dec(&cp->iscsi_conn);

            clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
        }
    }

    if (need_resched)
        queue_delayed_work(cnic_wq, &cp->delete_task,
                   msecs_to_jiffies(10));

}

static int cnic_cm_open(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int err;

    err = cnic_cm_alloc_mem(dev);
    if (err)
        return err;

    err = cp->start_cm(dev);

    if (err)
        goto err_out;

    INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

    dev->cm_create = cnic_cm_create;
    dev->cm_destroy = cnic_cm_destroy;
    dev->cm_connect = cnic_cm_connect;
    dev->cm_abort = cnic_cm_abort;
    dev->cm_close = cnic_cm_close;
    dev->cm_select_dev = cnic_cm_select_dev;

    cp->ulp_handle[CNIC_ULP_L4] = dev;
    rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
    return 0;

err_out:
    cnic_cm_free_mem(dev);
    return err;
}

static int cnic_cm_shutdown(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    int i;

    if (!cp->csk_tbl)
        return 0;

    for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
        struct cnic_sock *csk = &cp->csk_tbl[i];

        clear_bit(SK_F_INUSE, &csk->flags);
        cnic_cm_cleanup(csk);
    }
    cnic_cm_free_mem(dev);

    return 0;
}

static void cnic_init_context(struct cnic_dev *dev, u32 cid)
{
    u32 cid_addr;
    int i;

    cid_addr = GET_CID_ADDR(cid);

    for (i = 0; i < CTX_SIZE; i += 4)
        cnic_ctx_wr(dev, cid_addr, i, 0);
}

static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
{
    struct cnic_local *cp = dev->cnic_priv;
    int ret = 0, i;
    u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;

    if (CHIP_NUM(cp) != CHIP_NUM_5709)
        return 0;

    for (i = 0; i < cp->ctx_blks; i++) {
        int j;
        u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
        u32 val;

        memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);

        CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
            (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
        CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
            (u64) cp->ctx_arr[i].mapping >> 32);
        CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
            BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
        for (j = 0; j < 10; j++) {

            val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
            if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
                break;
            udelay(5);
        }
        if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
            ret = -EBUSY;
            break;
        }
    }
    return ret;
}

static void cnic_free_irq(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;

    if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
        cp->disable_int_sync(dev);
        tasklet_kill(&cp->cnic_irq_task);
        free_irq(ethdev->irq_arr[0].vector, dev);
    }
}

static int cnic_request_irq(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    int err;

    err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
    if (err)
        tasklet_disable(&cp->cnic_irq_task);

    return err;
}

static int cnic_init_bnx2_irq(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;

    if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
        int err, i = 0;
        int sblk_num = cp->status_blk_num;
        u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
               BNX2_HC_SB_CONFIG_1;

        CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);

        CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
        CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
        CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);

        cp->last_status_idx = cp->status_blk.bnx2->status_idx;
        tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
                 (unsigned long) dev);
        err = cnic_request_irq(dev);
        if (err)
            return err;

        while (cp->status_blk.bnx2->status_completion_producer_index &&
               i < 10) {
            CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
                1 << (11 + sblk_num));
            udelay(10);
            i++;
            barrier();
        }
        if (cp->status_blk.bnx2->status_completion_producer_index) {
            cnic_free_irq(dev);
            goto failed;
        }

    } else {
        struct status_block *sblk = cp->status_blk.gen;
        u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
        int i = 0;

        while (sblk->status_completion_producer_index && i < 10) {
            CNIC_WR(dev, BNX2_HC_COMMAND,
                hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
            udelay(10);
            i++;
            barrier();
        }
        if (sblk->status_completion_producer_index)
            goto failed;

    }
    return 0;

failed:
    netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
    return -EBUSY;
}

static void cnic_enable_bnx2_int(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;

    if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
        return;

    CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
        BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}

static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;

    if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
        return;

    CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
        BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
    CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
    synchronize_irq(ethdev->irq_arr[0].vector);
}

static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct cnic_uio_dev *udev = cp->udev;
    u32 cid_addr, tx_cid, sb_id;
    u32 val, offset0, offset1, offset2, offset3;
    int i;
    struct tx_bd *txbd;
    dma_addr_t buf_map, ring_map = udev->l2_ring_map;
    struct status_block *s_blk = cp->status_blk.gen;

    sb_id = cp->status_blk_num;
    tx_cid = 20;
    cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
    if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
        struct status_block_msix *sblk = cp->status_blk.bnx2;

        tx_cid = TX_TSS_CID + sb_id - 1;
        CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
            (TX_TSS_CID << 7));
        cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
    }
    cp->tx_cons = *cp->tx_cons_ptr;

    cid_addr = GET_CID_ADDR(tx_cid);
    if (CHIP_NUM(cp) == CHIP_NUM_5709) {
        u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;

        for (i = 0; i < PHY_CTX_SIZE; i += 4)
            cnic_ctx_wr(dev, cid_addr2, i, 0);

        offset0 = BNX2_L2CTX_TYPE_XI;
        offset1 = BNX2_L2CTX_CMD_TYPE_XI;
        offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
        offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
    } else {
        cnic_init_context(dev, tx_cid);
        cnic_init_context(dev, tx_cid + 1);

        offset0 = BNX2_L2CTX_TYPE;
        offset1 = BNX2_L2CTX_CMD_TYPE;
        offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
        offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
    }
    val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
    cnic_ctx_wr(dev, cid_addr, offset0, val);

    val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
    cnic_ctx_wr(dev, cid_addr, offset1, val);

    txbd = udev->l2_ring;

    buf_map = udev->l2_buf_map;
    for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
        txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
        txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
    }
    val = (u64) ring_map >> 32;
    cnic_ctx_wr(dev, cid_addr, offset2, val);
    txbd->tx_bd_haddr_hi = val;

    val = (u64) ring_map & 0xffffffff;
    cnic_ctx_wr(dev, cid_addr, offset3, val);
    txbd->tx_bd_haddr_lo = val;
}

static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct cnic_uio_dev *udev = cp->udev;
    u32 cid_addr, sb_id, val, coal_reg, coal_val;
    int i;
    struct rx_bd *rxbd;
    struct status_block *s_blk = cp->status_blk.gen;
    dma_addr_t ring_map = udev->l2_ring_map;

    sb_id = cp->status_blk_num;
    cnic_init_context(dev, 2);
    cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
    coal_reg = BNX2_HC_COMMAND;
    coal_val = CNIC_RD(dev, coal_reg);
    if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
        struct status_block_msix *sblk = cp->status_blk.bnx2;

        cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
        coal_reg = BNX2_HC_COALESCE_NOW;
        coal_val = 1 << (11 + sb_id);
    }
    i = 0;
    while (!(*cp->rx_cons_ptr != 0) && i < 10) {
        CNIC_WR(dev, coal_reg, coal_val);
        udelay(10);
        i++;
        barrier();
    }
    cp->rx_cons = *cp->rx_cons_ptr;

    cid_addr = GET_CID_ADDR(2);
    val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
          BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
    cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);

    if (sb_id == 0)
        val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
    else
        val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
    cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

    rxbd = udev->l2_ring + BCM_PAGE_SIZE;
    for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
        dma_addr_t buf_map;
        int n = (i % cp->l2_rx_ring_size) + 1;

        buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
        rxbd->rx_bd_len = cp->l2_single_buf_size;
        rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
        rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
        rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
    }
    val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
    cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
    rxbd->rx_bd_haddr_hi = val;

    val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
    cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
    rxbd->rx_bd_haddr_lo = val;

    val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
    cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
}

static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
{
    struct kwqe *wqes[1], l2kwqe;

    memset(&l2kwqe, 0, sizeof(l2kwqe));
    wqes[0] = &l2kwqe;
    l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
                  (L2_KWQE_OPCODE_VALUE_FLUSH <<
                   KWQE_OPCODE_SHIFT) | 2;
    dev->submit_kwqes(dev, wqes, 1);
}

static void cnic_set_bnx2_mac(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 val;

    val = cp->func << 2;

    cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);

    val = cnic_reg_rd_ind(dev, cp->shmem_base +
                  BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
    dev->mac_addr[0] = (u8) (val >> 8);
    dev->mac_addr[1] = (u8) val;

    CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);

    val = cnic_reg_rd_ind(dev, cp->shmem_base +
                  BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
    dev->mac_addr[2] = (u8) (val >> 24);
    dev->mac_addr[3] = (u8) (val >> 16);
    dev->mac_addr[4] = (u8) (val >> 8);
    dev->mac_addr[5] = (u8) val;

    CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);

    val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
    if (CHIP_NUM(cp) != CHIP_NUM_5709)
        val |= BNX2_RPM_SORT_USER2_PROM_VLAN;

    CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
    CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
    CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
}

static int cnic_start_bnx2_hw(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    struct status_block *sblk = cp->status_blk.gen;
    u32 val, kcq_cid_addr, kwq_cid_addr;
    int err;

    cnic_set_bnx2_mac(dev);

    val = CNIC_RD(dev, BNX2_MQ_CONFIG);
    val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
    if (BCM_PAGE_BITS > 12)
        val |= (12 - 8)  << 4;
    else
        val |= (BCM_PAGE_BITS - 8)  << 4;

    CNIC_WR(dev, BNX2_MQ_CONFIG, val);

    CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
    CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
    CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);

    err = cnic_setup_5709_context(dev, 1);
    if (err)
        return err;

    cnic_init_context(dev, KWQ_CID);
    cnic_init_context(dev, KCQ_CID);

    kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
    cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;

    cp->max_kwq_idx = MAX_KWQ_IDX;
    cp->kwq_prod_idx = 0;
    cp->kwq_con_idx = 0;
    set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);

    if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
        cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
    else
        cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;

    /* Initialize the kernel work queue context. */
    val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
          (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
    cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);

    val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
    cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);

    val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
    cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);

    val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
    cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);

    val = (u32) cp->kwq_info.pgtbl_map;
    cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);

    kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
    cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;

    cp->kcq1.sw_prod_idx = 0;
    cp->kcq1.hw_prod_idx_ptr =
        &sblk->status_completion_producer_index;

    cp->kcq1.status_idx_ptr = &sblk->status_idx;

    /* Initialize the kernel complete queue context. */
    val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
          (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
    cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);

    val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
    cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);

    val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
    cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);

    val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
    cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);

    val = (u32) cp->kcq1.dma.pgtbl_map;
    cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);

    cp->int_num = 0;
    if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
        struct status_block_msix *msblk = cp->status_blk.bnx2;
        u32 sb_id = cp->status_blk_num;
        u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);

        cp->kcq1.hw_prod_idx_ptr =
            &msblk->status_completion_producer_index;
        cp->kcq1.status_idx_ptr = &msblk->status_idx;
        cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
        cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
    }

    /* Enable Commnad Scheduler notification when we write to the
     * host producer index of the kernel contexts. */
    CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);

    /* Enable Command Scheduler notification when we write to either
     * the Send Queue or Receive Queue producer indexes of the kernel
     * bypass contexts. */
    CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
    CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);

    /* Notify COM when the driver post an application buffer. */
    CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);

    /* Set the CP and COM doorbells.  These two processors polls the
     * doorbell for a non zero value before running.  This must be done
     * after setting up the kernel queue contexts. */
    cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
    cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);

    cnic_init_bnx2_tx_ring(dev);
    cnic_init_bnx2_rx_ring(dev);

    err = cnic_init_bnx2_irq(dev);
    if (err) {
        netdev_err(dev->netdev, "cnic_init_irq failed\n");
        cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
        cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
        return err;
    }

    return 0;
}

static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    u32 start_offset = ethdev->ctx_tbl_offset;
    int i;

    for (i = 0; i < cp->ctx_blks; i++) {
        struct cnic_ctx *ctx = &cp->ctx_arr[i];
        dma_addr_t map = ctx->mapping;

        if (cp->ctx_align) {
            unsigned long mask = cp->ctx_align - 1;

            map = (map + mask) & ~mask;
        }

        cnic_ctx_tbl_wr(dev, start_offset + i, map);
    }
}

static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    int err = 0;

    tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
             (unsigned long) dev);
    if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
        err = cnic_request_irq(dev);

    return err;
}

static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
                        u16 sb_id, u8 sb_index,
                        u8 disable)
{

    u32 addr = BAR_CSTRORM_INTMEM +
            CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
            offsetof(struct hc_status_block_data_e1x, index_data) +
            sizeof(struct hc_index_data)*sb_index +
            offsetof(struct hc_index_data, flags);
    u16 flags = CNIC_RD16(dev, addr);
    /* clear and set */
    flags &= ~HC_INDEX_DATA_HC_ENABLED;
    flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
          HC_INDEX_DATA_HC_ENABLED);
    CNIC_WR16(dev, addr, flags);
}

static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u8 sb_id = cp->status_blk_num;

    CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
            CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
            offsetof(struct hc_status_block_data_e1x, index_data) +
            sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
            offsetof(struct hc_index_data, timeout), 64 / 4);
    cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
                    struct client_init_ramrod_data *data)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev = cp->udev;
    union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
    dma_addr_t buf_map, ring_map = udev->l2_ring_map;
    struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
    int i;
    u32 cli = cp->ethdev->iscsi_l2_client_id;
    u32 val;

    memset(txbd, 0, BCM_PAGE_SIZE);

    buf_map = udev->l2_buf_map;
    for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
        struct eth_tx_start_bd *start_bd = &txbd->start_bd;
        struct eth_tx_parse_bd_e1x *pbd_e1x =
            &((txbd + 1)->parse_bd_e1x);
        struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
        struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);

        start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
        start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
        reg_bd->addr_hi = start_bd->addr_hi;
        reg_bd->addr_lo = start_bd->addr_lo + 0x10;
        start_bd->nbytes = cpu_to_le16(0x10);
        start_bd->nbd = cpu_to_le16(3);
        start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
        start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
        start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);

        if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
            pbd_e2->parsing_data = (UNICAST_ADDRESS <<
                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
        else
             pbd_e1x->global_data = (UNICAST_ADDRESS <<
                ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
    }

    val = (u64) ring_map >> 32;
    txbd->next_bd.addr_hi = cpu_to_le32(val);

    data->tx.tx_bd_page_base.hi = cpu_to_le32(val);

    val = (u64) ring_map & 0xffffffff;
    txbd->next_bd.addr_lo = cpu_to_le32(val);

    data->tx.tx_bd_page_base.lo = cpu_to_le32(val);

    /* Other ramrod params */
    data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
    data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;

    /* reset xstorm per client statistics */
    if (cli < MAX_STAT_COUNTER_ID) {
        data->general.statistics_zero_flg = 1;
        data->general.statistics_en_flg = 1;
        data->general.statistics_counter_id = cli;
    }

    cp->tx_cons_ptr =
        &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
}

static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
                    struct client_init_ramrod_data *data)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev = cp->udev;
    struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
                BCM_PAGE_SIZE);
    struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
                (udev->l2_ring + (2 * BCM_PAGE_SIZE));
    struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
    int i;
    u32 cli = cp->ethdev->iscsi_l2_client_id;
    int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
    u32 val;
    dma_addr_t ring_map = udev->l2_ring_map;

    /* General data */
    data->general.client_id = cli;
    data->general.activate_flg = 1;
    data->general.sp_client_id = cli;
    data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
    data->general.func_id = cp->pfid;

    for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
        dma_addr_t buf_map;
        int n = (i % cp->l2_rx_ring_size) + 1;

        buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
        rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
        rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
    }

    val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
    rxbd->addr_hi = cpu_to_le32(val);
    data->rx.bd_page_base.hi = cpu_to_le32(val);

    val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
    rxbd->addr_lo = cpu_to_le32(val);
    data->rx.bd_page_base.lo = cpu_to_le32(val);

    rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
    val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
    rxcqe->addr_hi = cpu_to_le32(val);
    data->rx.cqe_page_base.hi = cpu_to_le32(val);

    val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
    rxcqe->addr_lo = cpu_to_le32(val);
    data->rx.cqe_page_base.lo = cpu_to_le32(val);

    /* Other ramrod params */
    data->rx.client_qzone_id = cl_qzone_id;
    data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
    data->rx.status_block_id = BNX2X_DEF_SB_ID;

    data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;

    data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
    data->rx.outer_vlan_removal_enable_flg = 1;
    data->rx.silent_vlan_removal_flg = 1;
    data->rx.silent_vlan_value = 0;
    data->rx.silent_vlan_mask = 0xffff;

    cp->rx_cons_ptr =
        &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
    cp->rx_cons = *cp->rx_cons_ptr;
}

static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    u32 pfid = cp->pfid;

    cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
               CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
    cp->kcq1.sw_prod_idx = 0;

    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
        struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

        cp->kcq1.hw_prod_idx_ptr =
            &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
        cp->kcq1.status_idx_ptr =
            &sb->sb.running_index[SM_RX_ID];
    } else {
        struct host_hc_status_block_e1x *sb = cp->status_blk.gen;

        cp->kcq1.hw_prod_idx_ptr =
            &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
        cp->kcq1.status_idx_ptr =
            &sb->sb.running_index[SM_RX_ID];
    }

    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
        struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

        cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
                    USTORM_FCOE_EQ_PROD_OFFSET(pfid);
        cp->kcq2.sw_prod_idx = 0;
        cp->kcq2.hw_prod_idx_ptr =
            &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
        cp->kcq2.status_idx_ptr =
            &sb->sb.running_index[SM_RX_ID];
    }
}

static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    int func = CNIC_FUNC(cp), ret;
    u32 pfid;

    dev->stats_addr = ethdev->addr_drv_info_to_mcp;
    cp->port_mode = CHIP_PORT_MODE_NONE;

    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
        u32 val;

        pci_read_config_dword(dev->pcidev, PCICFG_ME_REGISTER, &val);
        cp->func = (u8) ((val & ME_REG_ABS_PF_NUM) >>
                 ME_REG_ABS_PF_NUM_SHIFT);
        func = CNIC_FUNC(cp);

        val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
        if (!(val & 1))
            val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
        else
            val = (val >> 1) & 1;

        if (val) {
            cp->port_mode = CHIP_4_PORT_MODE;
            cp->pfid = func >> 1;
        } else {
            cp->port_mode = CHIP_2_PORT_MODE;
            cp->pfid = func & 0x6;
        }
    } else {
        cp->pfid = func;
    }
    pfid = cp->pfid;

    ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
                   cp->iscsi_start_cid, 0);

    if (ret)
        return -ENOMEM;

    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
        ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
                    cp->fcoe_start_cid, 0);

        if (ret)
            return -ENOMEM;
    }

    cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

    cnic_init_bnx2x_kcq(dev);

    /* Only 1 EQ */
    CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
    CNIC_WR(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
    CNIC_WR(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
        cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
    CNIC_WR(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
        (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
    CNIC_WR(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
        cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
    CNIC_WR(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
        (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
    CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
    CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
    CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
        HC_INDEX_ISCSI_EQ_CONS);

    CNIC_WR(dev, BAR_USTRORM_INTMEM +
        USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
        cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
    CNIC_WR(dev, BAR_USTRORM_INTMEM +
        USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
        (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

    CNIC_WR(dev, BAR_TSTRORM_INTMEM +
        TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

    cnic_setup_bnx2x_context(dev);

    ret = cnic_init_bnx2x_irq(dev);
    if (ret)
        return ret;

    return 0;
}

static void cnic_init_rings(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev = cp->udev;

    if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
        return;

    if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
        cnic_init_bnx2_tx_ring(dev);
        cnic_init_bnx2_rx_ring(dev);
        set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
    } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
        u32 cli = cp->ethdev->iscsi_l2_client_id;
        u32 cid = cp->ethdev->iscsi_l2_cid;
        u32 cl_qzone_id;
        struct client_init_ramrod_data *data;
        union l5cm_specific_data l5_data;
        struct ustorm_eth_rx_producers rx_prods = {0};
        u32 off, i, *cid_ptr;

        rx_prods.bd_prod = 0;
        rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
        barrier();

        cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

        off = BAR_USTRORM_INTMEM +
            (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
             USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
             USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));

        for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
            CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);

        set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

        data = udev->l2_buf;
        cid_ptr = udev->l2_buf + 12;

        memset(data, 0, sizeof(*data));

        cnic_init_bnx2x_tx_ring(dev, data);
        cnic_init_bnx2x_rx_ring(dev, data);

        l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
        l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;

        set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

        cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
            cid, ETH_CONNECTION_TYPE, &l5_data);

        i = 0;
        while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
               ++i < 10)
            msleep(1);

        if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
            netdev_err(dev->netdev,
                "iSCSI CLIENT_SETUP did not complete\n");
        cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
        cnic_ring_ctl(dev, cid, cli, 1);
        *cid_ptr = cid;
    }
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_uio_dev *udev = cp->udev;
    void *rx_ring;

    if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
        return;

    if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
        cnic_shutdown_bnx2_rx_ring(dev);
    } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
        u32 cli = cp->ethdev->iscsi_l2_client_id;
        u32 cid = cp->ethdev->iscsi_l2_cid;
        union l5cm_specific_data l5_data;
        int i;

        cnic_ring_ctl(dev, cid, cli, 0);

        set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

        l5_data.phy_address.lo = cli;
        l5_data.phy_address.hi = 0;
        cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
            cid, ETH_CONNECTION_TYPE, &l5_data);
        i = 0;
        while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
               ++i < 10)
            msleep(1);

        if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
            netdev_err(dev->netdev,
                "iSCSI CLIENT_HALT did not complete\n");
        cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);

        memset(&l5_data, 0, sizeof(l5_data));
        cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
            cid, NONE_CONNECTION_TYPE, &l5_data);
        msleep(10);
    }
    clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
    rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
    memset(rx_ring, 0, BCM_PAGE_SIZE);
}

static int cnic_register_netdev(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    int err;

    if (!ethdev)
        return -ENODEV;

    if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
        return 0;

    err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
    if (err)
        netdev_err(dev->netdev, "register_cnic failed\n");

    return err;
}

static void cnic_unregister_netdev(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;

    if (!ethdev)
        return;

    ethdev->drv_unregister_cnic(dev->netdev);
}

static int cnic_start_hw(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;
    struct cnic_eth_dev *ethdev = cp->ethdev;
    int err;

    if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
        return -EALREADY;

    dev->regview = ethdev->io_base;
    pci_dev_get(dev->pcidev);
    cp->func = PCI_FUNC(dev->pcidev->devfn);
    cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
    cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

    err = cp->alloc_resc(dev);
    if (err) {
        netdev_err(dev->netdev, "allocate resource failure\n");
        goto err1;
    }

    err = cp->start_hw(dev);
    if (err)
        goto err1;

    err = cnic_cm_open(dev);
    if (err)
        goto err1;

    set_bit(CNIC_F_CNIC_UP, &dev->flags);

    cp->enable_int(dev);

    return 0;

err1:
    cp->free_resc(dev);
    pci_dev_put(dev->pcidev);
    return err;
}

static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
{
    cnic_disable_bnx2_int_sync(dev);

    cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
    cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);

    cnic_init_context(dev, KWQ_CID);
    cnic_init_context(dev, KCQ_CID);

    cnic_setup_5709_context(dev, 0);
    cnic_free_irq(dev);

    cnic_free_resc(dev);
}


static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
{
    struct cnic_local *cp = dev->cnic_priv;

    cnic_free_irq(dev);
    *cp->kcq1.hw_prod_idx_ptr = 0;
    CNIC_WR(dev, BAR_CSTRORM_INTMEM +
        CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
    CNIC_WR16(dev, cp->kcq1.io_addr, 0);
    cnic_free_resc(dev);
}

static void cnic_stop_hw(struct cnic_dev *dev)
{
    if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
        struct cnic_local *cp = dev->cnic_priv;
        int i = 0;

        /* Need to wait for the ring shutdown event to complete
         * before clearing the CNIC_UP flag.
         */
        while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
            msleep(100);
            i++;
        }
        cnic_shutdown_rings(dev);
        cp->stop_cm(dev);
        clear_bit(CNIC_F_CNIC_UP, &dev->flags);
        RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
        synchronize_rcu();
        cnic_cm_shutdown(dev);
        cp->stop_hw(dev);
        pci_dev_put(dev->pcidev);
    }
}

static void cnic_free_dev(struct cnic_dev *dev)
{
    int i = 0;

    while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
        msleep(100);
        i++;
    }
    if (atomic_read(&dev->ref_count) != 0)
        netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");

    netdev_info(dev->netdev, "Removed CNIC device\n");
    dev_put(dev->netdev);
    kfree(dev);
}

static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
                       struct pci_dev *pdev)
{
    struct cnic_dev *cdev;
    struct cnic_local *cp;
    int alloc_size;

    alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);

    cdev = kzalloc(alloc_size , GFP_KERNEL);
    if (cdev == NULL) {
        netdev_err(dev, "allocate dev struct failure\n");
        return NULL;
    }

    cdev->netdev = dev;
    cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
    cdev->register_device = cnic_register_device;
    cdev->unregister_device = cnic_unregister_device;
    cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;

    cp = cdev->cnic_priv;
    cp->dev = cdev;
    cp->l2_single_buf_size = 0x400;
    cp->l2_rx_ring_size = 3;

    spin_lock_init(&cp->cnic_ulp_lock);

    netdev_info(dev, "Added CNIC device\n");

    return cdev;
}

static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
{
    struct pci_dev *pdev;
    struct cnic_dev *cdev;
    struct cnic_local *cp;
    struct cnic_eth_dev *ethdev = NULL;
    struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;

    probe = symbol_get(bnx2_cnic_probe);
    if (probe) {
        ethdev = (*probe)(dev);
        symbol_put(bnx2_cnic_probe);
    }
    if (!ethdev)
        return NULL;

    pdev = ethdev->pdev;
    if (!pdev)
        return NULL;

    dev_hold(dev);
    pci_dev_get(pdev);
    if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
         pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
        (pdev->revision < 0x10)) {
        pci_dev_put(pdev);
        goto cnic_err;
    }
    pci_dev_put(pdev);

    cdev = cnic_alloc_dev(dev, pdev);
    if (cdev == NULL)
        goto cnic_err;

    set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
    cdev->submit_kwqes = cnic_submit_bnx2_kwqes;

    cp = cdev->cnic_priv;
    cp->ethdev = ethdev;
    cdev->pcidev = pdev;
    cp->chip_id = ethdev->chip_id;

    cdev->max_iscsi_conn = ethdev->max_iscsi_conn;

    cp->cnic_ops = &cnic_bnx2_ops;
    cp->start_hw = cnic_start_bnx2_hw;
    cp->stop_hw = cnic_stop_bnx2_hw;
    cp->setup_pgtbl = cnic_setup_page_tbl;
    cp->alloc_resc = cnic_alloc_bnx2_resc;
    cp->free_resc = cnic_free_resc;
    cp->start_cm = cnic_cm_init_bnx2_hw;
    cp->stop_cm = cnic_cm_stop_bnx2_hw;
    cp->enable_int = cnic_enable_bnx2_int;
    cp->disable_int_sync = cnic_disable_bnx2_int_sync;
    cp->close_conn = cnic_close_bnx2_conn;
    return cdev;

cnic_err:
    dev_put(dev);
    return NULL;
}

static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
    struct pci_dev *pdev;
    struct cnic_dev *cdev;
    struct cnic_local *cp;
    struct cnic_eth_dev *ethdev = NULL;
    struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;

    probe = symbol_get(bnx2x_cnic_probe);
    if (probe) {
        ethdev = (*probe)(dev);
        symbol_put(bnx2x_cnic_probe);
    }
    if (!ethdev)
        return NULL;

    pdev = ethdev->pdev;
    if (!pdev)
        return NULL;

    dev_hold(dev);
    cdev = cnic_alloc_dev(dev, pdev);
    if (cdev == NULL) {
        dev_put(dev);
        return NULL;
    }

    set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
    cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;

    cp = cdev->cnic_priv;
    cp->ethdev = ethdev;
    cdev->pcidev = pdev;
    cp->chip_id = ethdev->chip_id;

    cdev->stats_addr = ethdev->addr_drv_info_to_mcp;

    if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
        cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
    if (CNIC_SUPPORTS_FCOE(cp))
        cdev->max_fcoe_conn = ethdev->max_fcoe_conn;

    if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
        cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;

    memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);

    cp->cnic_ops = &cnic_bnx2x_ops;
    cp->start_hw = cnic_start_bnx2x_hw;
    cp->stop_hw = cnic_stop_bnx2x_hw;
    cp->setup_pgtbl = cnic_setup_page_tbl_le;
    cp->alloc_resc = cnic_alloc_bnx2x_resc;
    cp->free_resc = cnic_free_resc;
    cp->start_cm = cnic_cm_init_bnx2x_hw;
    cp->stop_cm = cnic_cm_stop_bnx2x_hw;
    cp->enable_int = cnic_enable_bnx2x_int;
    cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
    if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
        cp->ack_int = cnic_ack_bnx2x_e2_msix;
        cp->arm_int = cnic_arm_bnx2x_e2_msix;
    } else {
        cp->ack_int = cnic_ack_bnx2x_msix;
        cp->arm_int = cnic_arm_bnx2x_msix;
    }
    cp->close_conn = cnic_close_bnx2x_conn;
    return cdev;
}

static struct cnic_dev *is_cnic_dev(struct net_device *dev)
{
    struct ethtool_drvinfo drvinfo;
    struct cnic_dev *cdev = NULL;

    if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
        memset(&drvinfo, 0, sizeof(drvinfo));
        dev->ethtool_ops->get_drvinfo(dev, &drvinfo);

        if (!strcmp(drvinfo.driver, "bnx2"))
            cdev = init_bnx2_cnic(dev);
        if (!strcmp(drvinfo.driver, "bnx2x"))
            cdev = init_bnx2x_cnic(dev);
        if (cdev) {
            write_lock(&cnic_dev_lock);
            list_add(&cdev->list, &cnic_dev_list);
            write_unlock(&cnic_dev_lock);
        }
    }
    return cdev;
}

static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
                  u16 vlan_id)
{
    int if_type;

    rcu_read_lock();
    for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
        struct cnic_ulp_ops *ulp_ops;
        void *ctx;

        ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
        if (!ulp_ops || !ulp_ops->indicate_netevent)
            continue;

        ctx = cp->ulp_handle[if_type];

        ulp_ops->indicate_netevent(ctx, event, vlan_id);
    }
    rcu_read_unlock();
}

/* netdev event handler */
static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
                             void *ptr)
{
    struct net_device *netdev = ptr;
    struct cnic_dev *dev;
    int new_dev = 0;

    dev = cnic_from_netdev(netdev);

    if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
        /* Check for the hot-plug device */
        dev = is_cnic_dev(netdev);
        if (dev) {
            new_dev = 1;
            cnic_hold(dev);
        }
    }
    if (dev) {
        struct cnic_local *cp = dev->cnic_priv;

        if (new_dev)
            cnic_ulp_init(dev);
        else if (event == NETDEV_UNREGISTER)
            cnic_ulp_exit(dev);

        if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
            if (cnic_register_netdev(dev) != 0) {
                cnic_put(dev);
                goto done;
            }
            if (!cnic_start_hw(dev))
                cnic_ulp_start(dev);
        }

        cnic_rcv_netevent(cp, event, 0);

        if (event == NETDEV_GOING_DOWN) {
            cnic_ulp_stop(dev);
            cnic_stop_hw(dev);
            cnic_unregister_netdev(dev);
        } else if (event == NETDEV_UNREGISTER) {
            write_lock(&cnic_dev_lock);
            list_del_init(&dev->list);
            write_unlock(&cnic_dev_lock);

            cnic_put(dev);
            cnic_free_dev(dev);
            goto done;
        }
        cnic_put(dev);
    } else {
        struct net_device *realdev;
        u16 vid;

        vid = cnic_get_vlan(netdev, &realdev);
        if (realdev) {
            dev = cnic_from_netdev(realdev);
            if (dev) {
                vid |= VLAN_TAG_PRESENT;
                cnic_rcv_netevent(dev->cnic_priv, event, vid);
                cnic_put(dev);
            }
        }
    }
done:
    return NOTIFY_DONE;
}

static struct notifier_block cnic_netdev_notifier = {
    .notifier_call = cnic_netdev_event
};

static void cnic_release(void)
{
    struct cnic_dev *dev;
    struct cnic_uio_dev *udev;

    while (!list_empty(&cnic_dev_list)) {
        dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
        if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
            cnic_ulp_stop(dev);
            cnic_stop_hw(dev);
        }

        cnic_ulp_exit(dev);
        cnic_unregister_netdev(dev);
        list_del_init(&dev->list);
        cnic_free_dev(dev);
    }
    while (!list_empty(&cnic_udev_list)) {
        udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
                  list);
        cnic_free_uio(udev);
    }
}

static int __init cnic_init(void)
{
    int rc = 0;

    pr_info("%s", version);

    rc = register_netdevice_notifier(&cnic_netdev_notifier);
    if (rc) {
        cnic_release();
        return rc;
    }

    cnic_wq = create_singlethread_workqueue("cnic_wq");
    if (!cnic_wq) {
        cnic_release();
        unregister_netdevice_notifier(&cnic_netdev_notifier);
        return -ENOMEM;
    }

    return 0;
}

static void __exit cnic_exit(void)
{
    unregister_netdevice_notifier(&cnic_netdev_notifier);
    cnic_release();
    destroy_workqueue(cnic_wq);
}

module_init(cnic_init);
module_exit(cnic_exit);