path: root/drivers/net/ethernet/broadcom/cnic.c

/* cnic.c: Broadcom CNIC core network driver.
 *
 * Copyright (c) 2006-2011 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 (zongxi@broadcom.com)
 * Modified and maintained by: Michael Chan <mchan@broadcom.com>
 */

#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 "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 <mchan@broadcom.com> and John(Zongxi) "
	      "Chen (zongxi@broadcom.com");
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 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;

	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)) {

			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_assign_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)
		netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
	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);

	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_assign_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);

	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");

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

	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;
	}

	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;
	}

	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_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;
			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;
	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)
		goto err_udev;

	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)
		goto err_dma;

	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_dma:
	dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
			  udev->l2_ring, udev->l2_ring_map);
 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 = dev->netdev->base_addr;
	uinfo->mem[0].internal_addr = dev->regview;
	uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
	uinfo->mem[0].memtype = UIO_MEM_PHYS;

	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		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[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 (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
		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;

	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 -EBUSY;
}

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 +