[SCSI] cnic: Add new Broadcom CNIC driver.

The CNIC driver controls BNX2 hardware rings and resources used by
iSCSI.  Most hardware resources for iSCSI are separate from those
used for ethernet networking.

iSCSI uses a separate MAC address and IP address.  The CNIC driver
creates a UIO interface to handle the non-offloaded packets such as
ARP, etc in userspace.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 2711 insertions, 0 deletions

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
new file mode 100644
index 000000000000..8d740376bbd2
--- /dev/null
+++ b/drivers/net/cnic.c
@@ -0,0 +1,2711 @@
+/* cnic.c: Broadcom CNIC core network driver.
+ *
+ * Copyright (c) 2006-2009 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>
+ */
+
+#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>
+#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 <scsi/iscsi_if.h>
+
+#include "cnic_if.h"
+#include "bnx2.h"
+#include "cnic.h"
+#include "cnic_defs.h"
+
+#define DRV_MODULE_NAME		"cnic"
+#define PFX DRV_MODULE_NAME	": "
+
+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);
+
+static LIST_HEAD(cnic_dev_list);
+static DEFINE_RWLOCK(cnic_dev_lock);
+static DEFINE_MUTEX(cnic_lock);
+
+static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
+
+static int cnic_service_bnx2(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 void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *);
+static void cnic_init_bnx2_tx_ring(struct cnic_dev *);
+static void cnic_init_bnx2_rx_ring(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_dev *dev = uinfo->priv;
+	struct cnic_local *cp = dev->cnic_priv;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (cp->uio_dev != -1)
+		return -EBUSY;
+
+	cp->uio_dev = iminor(inode);
+
+	cnic_shutdown_bnx2_rx_ring(dev);
+
+	cnic_init_bnx2_tx_ring(dev);
+	cnic_init_bnx2_rx_ring(dev);
+
+	return 0;
+}
+
+static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
+{
+	struct cnic_dev *dev = uinfo->priv;
+	struct cnic_local *cp = dev->cnic_priv;
+
+	cp->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 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_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_kwq_completion(struct cnic_dev *dev, u32 count)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	struct cnic_eth_dev *ethdev = cp->ethdev;
+	struct drv_ctl_info info;
+
+	info.cmd = DRV_CTL_COMPLETION_CMD;
+	info.data.comp.comp_count = count;
+	ethdev->drv_ctl(dev->netdev, &info);
+}
+
+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;
+
+	if (cp->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;
+	}
+
+	rcu_read_lock();
+	ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]);
+	if (ulp_ops)
+		ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
+	rcu_read_unlock();
+	return 0;
+}
+
+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;
+
+		csk = &cp->csk_tbl[l5_cid];
+		csk_hold(csk);
+		if (cnic_in_use(csk)) {
+			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);
+		}
+		csk_put(csk);
+		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 >= MAX_CNIC_ULP_TYPE) {
+		printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n",
+		       ulp_type);
+		return -EINVAL;
+	}
+	mutex_lock(&cnic_lock);
+	if (cnic_ulp_tbl[ulp_type]) {
+		printk(KERN_ERR PFX "cnic_register_driver: Type %d has already "
+				    "been registered\n", 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);
+
+	rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
+	mutex_unlock(&cnic_lock);
+
+	/* Prevent race conditions with netdev_event */
+	rtnl_lock();
+	read_lock(&cnic_dev_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);
+	}
+	read_unlock(&cnic_dev_lock);
+	rtnl_unlock();
+
+	return 0;
+}
+
+int cnic_unregister_driver(int ulp_type)
+{
+	struct cnic_dev *dev;
+
+	if (ulp_type >= MAX_CNIC_ULP_TYPE) {
+		printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n",
+		       ulp_type);
+		return -EINVAL;
+	}
+	mutex_lock(&cnic_lock);
+	if (!cnic_ulp_tbl[ulp_type]) {
+		printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not "
+				    "been registered\n", 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])) {
+			printk(KERN_ERR PFX "cnic_unregister_driver: Type %d "
+			       "still has devices registered\n", 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();
+	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 >= MAX_CNIC_ULP_TYPE) {
+		printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n",
+		       ulp_type);
+		return -EINVAL;
+	}
+	mutex_lock(&cnic_lock);
+	if (cnic_ulp_tbl[ulp_type] == NULL) {
+		printk(KERN_ERR PFX "cnic_register_device: Driver with type %d "
+				    "has not been registered\n", ulp_type);
+		mutex_unlock(&cnic_lock);
+		return -EAGAIN;
+	}
+	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
+		printk(KERN_ERR PFX "cnic_register_device: Type %d has already "
+		       "been registered to this device\n", 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[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;
+
+	if (ulp_type >= MAX_CNIC_ULP_TYPE) {
+		printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n",
+		       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 {
+		printk(KERN_ERR PFX "cnic_unregister_device: device not "
+		       "registered to this ulp type %d\n", ulp_type);
+		mutex_unlock(&cnic_lock);
+		return -EINVAL;
+	}
+	mutex_unlock(&cnic_lock);
+
+	synchronize_rcu();
+
+	return 0;
+}
+EXPORT_SYMBOL(cnic_unregister_driver);
+
+static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
+{
+	id_tbl->start = start_id;
+	id_tbl->max = size;
+	id_tbl->next = 0;
+	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]) {
+			pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE,
+					    dma->pg_arr[i], dma->pg_map_arr[i]);
+			dma->pg_arr[i] = NULL;
+		}
+	}
+	if (dma->pgtbl) {
+		pci_free_consistent(dev->pcidev, 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;
+	u32 *page_table = dma->pgtbl;
+
+	for (i = 0; i < dma->num_pages; i++) {
+		/* Each entry needs to be in big endian format. */
+		*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
+		page_table++;
+		*page_table = (u32) dma->pg_map_arr[i];
+		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] = pci_alloc_consistent(dev->pcidev,
+						      BCM_PAGE_SIZE,
+						      &dma->pg_map_arr[i]);
+		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 = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size,
+					  &dma->pgtbl_map);
+	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_resc(struct cnic_dev *dev)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	int i = 0;
+
+	if (cp->cnic_uinfo) {
+		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
+		while (cp->uio_dev != -1 && i < 15) {
+			msleep(100);
+			i++;
+		}
+		uio_unregister_device(cp->cnic_uinfo);
+		kfree(cp->cnic_uinfo);
+		cp->cnic_uinfo = NULL;
+	}
+
+	if (cp->l2_buf) {
+		pci_free_consistent(dev->pcidev, cp->l2_buf_size,
+				    cp->l2_buf, cp->l2_buf_map);
+		cp->l2_buf = NULL;
+	}
+
+	if (cp->l2_ring) {
+		pci_free_consistent(dev->pcidev, cp->l2_ring_size,
+				    cp->l2_ring, cp->l2_ring_map);
+		cp->l2_ring = NULL;
+	}
+
+	for (i = 0; i < cp->ctx_blks; i++) {
+		if (cp->ctx_arr[i].ctx) {
+			pci_free_consistent(dev->pcidev, cp->ctx_blk_size,
+					    cp->ctx_arr[i].ctx,
+					    cp->ctx_arr[i].mapping);
+			cp->ctx_arr[i].ctx = NULL;
+		}
+	}
+	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->conn_buf_info);
+	cnic_free_dma(dev, &cp->kwq_info);
+	cnic_free_dma(dev, &cp->kcq_info);
+	kfree(cp->iscsi_tbl);
+	cp->iscsi_tbl = NULL;
+	kfree(cp->ctx_tbl);
+	cp->ctx_tbl = NULL;
+
+	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 =
+				pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE,
+						     &cp->ctx_arr[i].mapping);
+			if (cp->ctx_arr[i].ctx == NULL)
+				return -ENOMEM;
+		}
+	}
+	return 0;
+}
+
+static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	struct uio_info *uinfo;
+	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_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
+	if (ret)
+		goto error;
+	cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
+
+	ret = cnic_alloc_context(dev);
+	if (ret)
+		goto error;
+
+	cp->l2_ring_size = 2 * BCM_PAGE_SIZE;
+	cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size,
+					   &cp->l2_ring_map);
+	if (!cp->l2_ring)
+		goto error;
+
+	cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
+	cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
+	cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size,
+					   &cp->l2_buf_map);
+	if (!cp->l2_buf)
+		goto error;
+
+	uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
+	if (!uinfo)
+		goto error;
+
+	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;
+
+	uinfo->mem[1].addr = (unsigned long) cp->status_blk & 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->mem[1].memtype = UIO_MEM_LOGICAL;
+
+	uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
+	uinfo->mem[2].size = cp->l2_ring_size;
+	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
+
+	uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
+	uinfo->mem[3].size = cp->l2_buf_size;
+	uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
+
+	uinfo->name = "bnx2_cnic";
+	uinfo->version = CNIC_MODULE_VERSION;
+	uinfo->irq = UIO_IRQ_CUSTOM;
+
+	uinfo->open = cnic_uio_open;
+	uinfo->release = cnic_uio_close;
+
+	uinfo->priv = dev;
+
+	ret = uio_register_device(&dev->pcidev->dev, uinfo);
+	if (ret) {
+		kfree(uinfo);
+		goto error;
+	}
+
+	cp->cnic_uinfo = uinfo;
+
+	return 0;
+
+error:
+	cnic_free_resc(dev);
+	return ret;
+}
+
+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) &&
+	    !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
+		spin_unlock_bh(&cp->cnic_ulp_lock);
+		return -EAGAIN;
+	}
+
+	cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
+
+	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 service_kcqes(struct cnic_dev *dev, int num_cqes)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	int i, j;
+
+	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 = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
+
+		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
+			cnic_kwq_completion(dev, 1);
+
+		while (j < num_cqes) {
+			u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
+
+			if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
+				break;
+
+			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
+				cnic_kwq_completion(dev, 1);
+			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_L4)
+			ulp_type = CNIC_ULP_L4;
+		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
+			goto end;
+		else {
+			printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n",
+			       dev->netdev->name, 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;
+	}
+	return;
+}
+
+static u16 cnic_bnx2_next_idx(u16 idx)
+{
+	return idx + 1;
+}
+
+static u16 cnic_bnx2_hw_idx(u16 idx)
+{
+	return idx;
+}
+
+static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	u16 i, ri, last;
+	struct kcqe *kcqe;
+	int kcqe_cnt = 0, last_cnt = 0;
+
+	i = ri = last = *sw_prod;
+	ri &= MAX_KCQ_IDX;
+
+	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
+		kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
+		cp->completed_kcq[kcqe_cnt++] = kcqe;
+		i = cp->next_idx(i);
+		ri = i & MAX_KCQ_IDX;
+		if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
+			last_cnt = kcqe_cnt;
+			last = i;
+		}
+	}
+
+	*sw_prod = last;
+	return last_cnt;
+}
+
+static void cnic_chk_bnx2_pkt_rings(struct cnic_local *cp)
+{
+	u16 rx_cons = *cp->rx_cons_ptr;
+	u16 tx_cons = *cp->tx_cons_ptr;
+
+	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
+		cp->tx_cons = tx_cons;
+		cp->rx_cons = rx_cons;
+		uio_event_notify(cp->cnic_uinfo);
+	}
+}
+
+static int cnic_service_bnx2(void *data, void *status_blk)
+{
+	struct cnic_dev *dev = data;
+	struct status_block *sblk = status_blk;
+	struct cnic_local *cp = dev->cnic_priv;
+	u32 status_idx = sblk->status_idx;
+	u16 hw_prod, sw_prod;
+	int kcqe_cnt;
+
+	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
+		return status_idx;
+
+	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
+
+	hw_prod = sblk->status_completion_producer_index;
+	sw_prod = cp->kcq_prod_idx;
+	while (sw_prod != hw_prod) {
+		kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
+		if (kcqe_cnt == 0)
+			goto done;
+
+		service_kcqes(dev, kcqe_cnt);
+
+		/* Tell compiler that status_blk fields can change. */
+		barrier();
+		if (status_idx != sblk->status_idx) {
+			status_idx = sblk->status_idx;
+			cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
+			hw_prod = sblk->status_completion_producer_index;
+		} else
+			break;
+	}
+
+done:
+	CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
+
+	cp->kcq_prod_idx = sw_prod;
+
+	cnic_chk_bnx2_pkt_rings(cp);
+	return status_idx;
+}
+
+static void cnic_service_bnx2_msix(unsigned long data)
+{
+	struct cnic_dev *dev = (struct cnic_dev *) data;
+	struct cnic_local *cp = dev->cnic_priv;
+	struct status_block_msix *status_blk = cp->bnx2_status_blk;
+	u32 status_idx = status_blk->status_idx;
+	u16 hw_prod, sw_prod;
+	int kcqe_cnt;
+
+	cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
+
+	hw_prod = status_blk->status_completion_producer_index;
+	sw_prod = cp->kcq_prod_idx;
+	while (sw_prod != hw_prod) {
+		kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
+		if (kcqe_cnt == 0)
+			goto done;
+
+		service_kcqes(dev, kcqe_cnt);
+
+		/* Tell compiler that status_blk fields can change. */
+		barrier();
+		if (status_idx != status_blk->status_idx) {
+			status_idx = status_blk->status_idx;
+			cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
+			hw_prod = status_blk->status_completion_producer_index;
+		} else
+			break;
+	}
+
+done:
+	CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
+	cp->kcq_prod_idx = sw_prod;
+
+	cnic_chk_bnx2_pkt_rings(cp);
+
+	cp->last_status_idx = status_idx;
+	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
+		BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
+}
+
+static irqreturn_t cnic_irq(int irq, void *dev_instance)
+{
+	struct cnic_dev *dev = dev_instance;
+	struct cnic_local *cp = dev->cnic_priv;
+	u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
+
+	if (cp->ack_int)
+		cp->ack_int(dev);
+
+	prefetch(cp->status_blk);
+	prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
+
+	if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
+		tasklet_schedule(&cp->cnic_irq_task);
+
+	return IRQ_HANDLED;
+}
+
+static void cnic_ulp_stop(struct cnic_dev *dev)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	int if_type;
+
+	rcu_read_lock();
+	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
+		struct cnic_ulp_ops *ulp_ops;
+
+		ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
+		if (!ulp_ops)
+			continue;
+
+		if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
+			ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
+	}
+	rcu_read_unlock();
+}
+
+static void cnic_ulp_start(struct cnic_dev *dev)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	int if_type;
+
+	rcu_read_lock();
+	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
+		struct cnic_ulp_ops *ulp_ops;
+
+		ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
+		if (!ulp_ops || !ulp_ops->cnic_start)
+			continue;
+
+		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
+			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
+	}
+	rcu_read_unlock();
+}
+
+static int cnic_ctl(void *data, struct cnic_ctl_info *info)
+{
+	struct cnic_dev *dev = data;
+
+	switch (info->cmd) {
+	case CNIC_CTL_STOP_CMD:
+		cnic_hold(dev);
+		mutex_lock(&cnic_lock);
+
+		cnic_ulp_stop(dev);
+		cnic_stop_hw(dev);
+
+		mutex_unlock(&cnic_lock);
+		cnic_put(dev);
+		break;
+	case CNIC_CTL_START_CMD:
+		cnic_hold(dev);
+		mutex_lock(&cnic_lock);
+
+		if (!cnic_start_hw(dev))
+			cnic_ulp_start(dev);
+
+		mutex_unlock(&cnic_lock);
+		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;
+
+	rcu_read_lock();
+	for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
+		struct cnic_ulp_ops *ulp_ops;
+
+		ulp_ops = rcu_dereference(cnic_ulp_tbl[i]);
+		if (!ulp_ops || !ulp_ops->cnic_init)
+			continue;
+
+		if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
+			ulp_ops->cnic_init(dev);
+
+	}
+	rcu_read_unlock();
+}
+
+static void cnic_ulp_exit(struct cnic_dev *dev)
+{
+	int i;
+	struct cnic_local *cp = dev->cnic_priv;
+
+	rcu_read_lock();
+	for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
+		struct cnic_ulp_ops *ulp_ops;
+
+		ulp_ops = rcu_dereference(cnic_ulp_tbl[i]);
+		if (!ulp_ops || !ulp_ops->cnic_exit)
+			continue;
+
+		if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
+			ulp_ops->cnic_exit(dev);
+
+	}
+	rcu_read_unlock();
+}
+
+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_count = DEF_IPID_COUNT;
+	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;
+
+	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, 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)
+{
+	struct flowi fl;
+	int err;
+	struct rtable *rt;
+
+	memset(&fl, 0, sizeof(fl));
+	fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
+
+	err = ip_route_output_key(&init_net, &rt, &fl);
+	if (!err)
+		*dst = &rt->u.dst;
+	return err;
+}
+
+static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
+			     struct dst_entry **dst)
+{
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	struct flowi fl;
+
+	memset(&fl, 0, sizeof(fl));
+	ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
+	if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
+		fl.oif = dst_addr->sin6_scope_id;
+
+	*dst = ip6_route_output(&init_net, NULL, &fl);
+	if (*dst)
+		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, err, rc = -ENETUNREACH;
+	struct dst_entry *dst;
+	struct net_device *realdev;
+	u32 local_port;
+
+	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) {
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+		set_bit(SK_F_IPV6, &csk->flags);
+		err = cnic_get_v6_route(&saddr->remote.v6, &dst);
+		if (err)
+			return err;
+
+		if (!dst || dst->error || !dst->dev)
+			goto err_out;
+
+		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
+		return rc;
+#endif
+
+	} else {
+		err = cnic_get_v4_route(&saddr->remote.v4, &dst);
+		if (err)
+			return err;
+
+		if (!dst || dst->error || !dst->dev)
+			goto err_out;
+
+		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 = cnic_get_vlan(dst->dev, &realdev);
+	if (realdev != dev->netdev)
+		goto err_out;
+
+	if (local_port >= CNIC_LOCAL_PORT_MIN &&
+	    local_port < CNIC_LOCAL_PORT_MAX) {
+		if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
+			local_port = 0;
+	} else
+		local_port = 0;
+
+	if (!local_port) {
+		local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
+		if (local_port == -1) {
+			rc = -ENOMEM;
+			goto err_out;
+		}
+	}
+	csk->src_port = local_port;
+
+	csk->mtu = dst_mtu(dst);
+	rc = 0;
+
+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)
+{
+	int err = 0;
+
+	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;
+
+	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.
+	 */
+
+	csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
+	if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
+		opcode = csk->state;
+	else
+		opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
+	cp->close_conn(csk, opcode);
+
+	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);
+	}
+	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;
+	}
+	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_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 == 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 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
+		if (l4kcqe->status == 0)
+			set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
+
+		smp_mb__before_clear_bit();
+		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
+		cnic_cm_upcall(cp, csk, opcode);
+		break;
+
+	case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
+		if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
+			csk->state = opcode;
+		/* fall through */
+	case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
+	case L4_KCQE_OPCODE_VALUE_RESET_COMP:
+		cp->close_conn(csk, opcode);
+		break;
+
+	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
+		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;
+
+	cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
+			      GFP_KERNEL);
+	if (!cp->csk_tbl)
+		return -ENOMEM;
+
+	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
+			     CNIC_LOCAL_PORT_MIN)) {
+		cnic_cm_free_mem(dev);
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
+{
+	if ((opcode == csk->state) ||
+	    (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
+	     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
+		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
+			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;
+
+	clear_bit(SK_F_CONNECT_START, &csk->flags);
+	if (cnic_ready_to_close(csk, opcode)) {
+		cnic_close_conn(csk);
+		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;
+
+	get_random_bytes(&seed, 4);
+	cnic_ctx_wr(dev, 45, 0, seed);
+	return 0;
+}
+
+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;
+
+	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;
+
+	cp->stop_cm(dev);
+
+	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)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	u32 cid_addr;
+	int i;
+
+	if (CHIP_NUM(cp) == CHIP_NUM_5709)
+		return;
+
+	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_disable(&cp->cnic_irq_task);
+		free_irq(ethdev->irq_arr[0].vector, dev);
+	}
+}
+
+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->bnx2_status_blk = cp->status_blk;
+		cp->last_status_idx = cp->bnx2_status_blk->status_idx;
+		tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix,
+			     (unsigned long) dev);
+		err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
+				  "cnic", dev);
+		if (err) {
+			tasklet_disable(&cp->cnic_irq_task);
+			return err;
+		}
+		while (cp->bnx2_status_blk->status_completion_producer_index &&
+		       i < 10) {
+			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
+				1 << (11 + sblk_num));
+			udelay(10);
+			i++;
+			barrier();
+		}
+		if (cp->bnx2_status_blk->status_completion_producer_index) {
+			cnic_free_irq(dev);
+			goto failed;
+		}
+
+	} else {
+		struct status_block *sblk = cp->status_blk;
+		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:
+	printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n",
+	       dev->netdev->name);
+	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;
+	u32 cid_addr, tx_cid, sb_id;
+	u32 val, offset0, offset1, offset2, offset3;
+	int i;
+	struct tx_bd *txbd;
+	dma_addr_t buf_map;
+	struct status_block *s_blk = cp->status_blk;
+
+	sb_id = cp->status_blk_num;
+	tx_cid = 20;
+	cnic_init_context(dev, tx_cid);
+	cnic_init_context(dev, tx_cid + 1);
+	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;
+
+		tx_cid = TX_TSS_CID + sb_id - 1;
+		cnic_init_context(dev, tx_cid);
+		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 {
+		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 = (struct tx_bd *) cp->l2_ring;
+
+	buf_map = cp->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) cp->l2_ring_map >> 32;
+	cnic_ctx_wr(dev, cid_addr, offset2, val);
+	txbd->tx_bd_haddr_hi = val;
+
+	val = (u64) cp->l2_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;
+	u32 cid_addr, sb_id, val, coal_reg, coal_val;
+	int i;
+	struct rx_bd *rxbd;
+	struct status_block *s_blk = cp->status_blk;
+
+	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;
+
+		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_STATUSB_NUM_SHIFT;
+	else
+		val = BNX2_L2CTX_STATUSB_NUM(sb_id);
+	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
+
+	rxbd = (struct rx_bd *) (cp->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 = cp->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) (cp->l2_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) (cp->l2_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_FLAGS_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;
+	u32 val;
+	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);
+
+	cp->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;
+	cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
+
+	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, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
+
+	val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
+	cnic_ctx_wr(dev, cp->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, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
+
+	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
+	cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
+
+	val = (u32) cp->kwq_info.pgtbl_map;
+	cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
+
+	cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
+	cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
+
+	cp->kcq_prod_idx = 0;
+
+	/* 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, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
+
+	val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
+	cnic_ctx_wr(dev, cp->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, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
+
+	val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
+	cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
+
+	val = (u32) cp->kcq_info.pgtbl_map;
+	cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
+
+	cp->int_num = 0;
+	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
+		u32 sb_id = cp->status_blk_num;
+		u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id);
+
+		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
+		cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
+		cnic_ctx_wr(dev, cp->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) {
+		printk(KERN_ERR PFX "%s: cnic_init_irq failed\n",
+		       dev->netdev->name);
+		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 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;
+
+	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
+	if (err) {
+		printk(KERN_ERR PFX "%s: register_cnic failed\n",
+		       dev->netdev->name);
+		goto err2;
+	}
+
+	dev->regview = ethdev->io_base;
+	cp->chip_id = ethdev->chip_id;
+	pci_dev_get(dev->pcidev);
+	cp->func = PCI_FUNC(dev->pcidev->devfn);
+	cp->status_blk = ethdev->irq_arr[0].status_blk;
+	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
+
+	err = cp->alloc_resc(dev);
+	if (err) {
+		printk(KERN_ERR PFX "%s: allocate resource failure\n",
+		       dev->netdev->name);
+		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:
+	ethdev->drv_unregister_cnic(dev->netdev);
+	cp->free_resc(dev);
+	pci_dev_put(dev->pcidev);
+err2:
+	return err;
+}
+
+static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
+{
+	struct cnic_local *cp = dev->cnic_priv;
+	struct cnic_eth_dev *ethdev = cp->ethdev;
+
+	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);
+
+	ethdev->drv_unregister_cnic(dev->netdev);
+
+	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;
+
+		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
+		rcu_assign_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)
+		printk(KERN_ERR PFX "%s: Failed waiting for ref count to go"
+				    " to zero.\n", dev->netdev->name);
+
+	printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name);
+	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) {
+		printk(KERN_ERR PFX "%s: allocate dev struct failure\n",
+		       dev->name);
+		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->uio_dev = -1;
+	cp->l2_single_buf_size = 0x400;
+	cp->l2_rx_ring_size = 3;
+
+	spin_lock_init(&cp->cnic_ulp_lock);
+
+	printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name);
+
+	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)(void *) = NULL;
+
+	probe = __symbol_get("bnx2_cnic_probe");
+	if (probe) {
+		ethdev = (*probe)(dev);
+		symbol_put_addr(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) {
+		u8 rev;
+
+		pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
+		if (rev < 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->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;
+	cp->next_idx = cnic_bnx2_next_idx;
+	cp->hw_idx = cnic_bnx2_hw_idx;
+	return cdev;
+
+cnic_err:
+	dev_put(dev);
+	return NULL;
+}
+
+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 (cdev) {
+			write_lock(&cnic_dev_lock);
+			list_add(&cdev->list, &cnic_dev_list);
+			write_unlock(&cnic_dev_lock);
+		}
+	}
+	return cdev;
+}
+
+/**
+ * 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 if_type;
+	int new_dev = 0;
+
+	dev = cnic_from_netdev(netdev);
+
+	if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
+		/* 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);
+		else if (event == NETDEV_UP) {
+			mutex_lock(&cnic_lock);
+			if (!cnic_start_hw(dev))
+				cnic_ulp_start(dev);
+			mutex_unlock(&cnic_lock);
+		}
+
+		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);
+		}
+		rcu_read_unlock();
+
+		if (event == NETDEV_GOING_DOWN) {
+			mutex_lock(&cnic_lock);
+			cnic_ulp_stop(dev);
+			cnic_stop_hw(dev);
+			mutex_unlock(&cnic_lock);
+		} 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);
+	}
+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;
+
+	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);
+		list_del_init(&dev->list);
+		cnic_free_dev(dev);
+	}
+}
+
+static int __init cnic_init(void)
+{
+	int rc = 0;
+
+	printk(KERN_INFO "%s", version);
+
+	rc = register_netdevice_notifier(&cnic_netdev_notifier);
+	if (rc) {
+		cnic_release();
+		return rc;
+	}
+
+	return 0;
+}
+
+static void __exit cnic_exit(void)
+{
+	unregister_netdevice_notifier(&cnic_netdev_notifier);
+	cnic_release();
+	return;
+}
+
+module_init(cnic_init);
+module_exit(cnic_exit);