dirty fix to merging

1 files changed, 6044 insertions, 0 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
new file mode 100644
index 00000000..ee47820c
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -0,0 +1,6044 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2010 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/blkdev.h>
+#include <linux/iscsi_boot_sysfs.h>
+#include <linux/inet.h>
+
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+
+#include "ql4_def.h"
+#include "ql4_version.h"
+#include "ql4_glbl.h"
+#include "ql4_dbg.h"
+#include "ql4_inline.h"
+
+/*
+ * Driver version
+ */
+static char qla4xxx_version_str[40];
+
+/*
+ * SRB allocation cache
+ */
+static struct kmem_cache *srb_cachep;
+
+/*
+ * Module parameter information and variables
+ */
+static int ql4xdisablesysfsboot = 1;
+module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ql4xdisablesysfsboot,
+		 " Set to disable exporting boot targets to sysfs.\n"
+		 "\t\t  0 - Export boot targets\n"
+		 "\t\t  1 - Do not export boot targets (Default)");
+
+int ql4xdontresethba;
+module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ql4xdontresethba,
+		 " Don't reset the HBA for driver recovery.\n"
+		 "\t\t  0 - It will reset HBA (Default)\n"
+		 "\t\t  1 - It will NOT reset HBA");
+
+int ql4xextended_error_logging;
+module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ql4xextended_error_logging,
+		 " Option to enable extended error logging.\n"
+		 "\t\t  0 - no logging (Default)\n"
+		 "\t\t  2 - debug logging");
+
+int ql4xenablemsix = 1;
+module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql4xenablemsix,
+		 " Set to enable MSI or MSI-X interrupt mechanism.\n"
+		 "\t\t  0 = enable INTx interrupt mechanism.\n"
+		 "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
+		 "\t\t  2 = enable MSI interrupt mechanism.");
+
+#define QL4_DEF_QDEPTH 32
+static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
+module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ql4xmaxqdepth,
+		 " Maximum queue depth to report for target devices.\n"
+		 "\t\t  Default: 32.");
+
+static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
+module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
+MODULE_PARM_DESC(ql4xsess_recovery_tmo,
+		" Target Session Recovery Timeout.\n"
+		"\t\t  Default: 120 sec.");
+
+static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
+/*
+ * SCSI host template entry points
+ */
+static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
+
+/*
+ * iSCSI template entry points
+ */
+static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
+				     enum iscsi_param param, char *buf);
+static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
+				  enum iscsi_param param, char *buf);
+static int qla4xxx_host_get_param(struct Scsi_Host *shost,
+				  enum iscsi_host_param param, char *buf);
+static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
+				   uint32_t len);
+static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
+				   enum iscsi_param_type param_type,
+				   int param, char *buf);
+static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
+static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
+						 struct sockaddr *dst_addr,
+						 int non_blocking);
+static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
+static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
+static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
+				enum iscsi_param param, char *buf);
+static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
+static struct iscsi_cls_conn *
+qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
+static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
+			     struct iscsi_cls_conn *cls_conn,
+			     uint64_t transport_fd, int is_leading);
+static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
+static struct iscsi_cls_session *
+qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
+			uint16_t qdepth, uint32_t initial_cmdsn);
+static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
+static void qla4xxx_task_work(struct work_struct *wdata);
+static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
+static int qla4xxx_task_xmit(struct iscsi_task *);
+static void qla4xxx_task_cleanup(struct iscsi_task *);
+static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
+static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
+				   struct iscsi_stats *stats);
+static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
+			     uint32_t iface_type, uint32_t payload_size,
+			     uint32_t pid, struct sockaddr *dst_addr);
+static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
+				 uint32_t *num_entries, char *buf);
+static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
+
+/*
+ * SCSI host template entry points
+ */
+static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
+static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_slave_alloc(struct scsi_device *device);
+static int qla4xxx_slave_configure(struct scsi_device *device);
+static void qla4xxx_slave_destroy(struct scsi_device *sdev);
+static umode_t ql4_attr_is_visible(int param_type, int param);
+static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
+
+static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
+    QLA82XX_LEGACY_INTR_CONFIG;
+
+static struct scsi_host_template qla4xxx_driver_template = {
+	.module			= THIS_MODULE,
+	.name			= DRIVER_NAME,
+	.proc_name		= DRIVER_NAME,
+	.queuecommand		= qla4xxx_queuecommand,
+
+	.eh_abort_handler	= qla4xxx_eh_abort,
+	.eh_device_reset_handler = qla4xxx_eh_device_reset,
+	.eh_target_reset_handler = qla4xxx_eh_target_reset,
+	.eh_host_reset_handler	= qla4xxx_eh_host_reset,
+	.eh_timed_out		= qla4xxx_eh_cmd_timed_out,
+
+	.slave_configure	= qla4xxx_slave_configure,
+	.slave_alloc		= qla4xxx_slave_alloc,
+	.slave_destroy		= qla4xxx_slave_destroy,
+
+	.this_id		= -1,
+	.cmd_per_lun		= 3,
+	.use_clustering		= ENABLE_CLUSTERING,
+	.sg_tablesize		= SG_ALL,
+
+	.max_sectors		= 0xFFFF,
+	.shost_attrs		= qla4xxx_host_attrs,
+	.host_reset		= qla4xxx_host_reset,
+	.vendor_id		= SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
+};
+
+static struct iscsi_transport qla4xxx_iscsi_transport = {
+	.owner			= THIS_MODULE,
+	.name			= DRIVER_NAME,
+	.caps			= CAP_TEXT_NEGO |
+				  CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
+				  CAP_DATADGST | CAP_LOGIN_OFFLOAD |
+				  CAP_MULTI_R2T,
+	.attr_is_visible	= ql4_attr_is_visible,
+	.create_session         = qla4xxx_session_create,
+	.destroy_session        = qla4xxx_session_destroy,
+	.start_conn             = qla4xxx_conn_start,
+	.create_conn            = qla4xxx_conn_create,
+	.bind_conn              = qla4xxx_conn_bind,
+	.stop_conn              = iscsi_conn_stop,
+	.destroy_conn           = qla4xxx_conn_destroy,
+	.set_param              = iscsi_set_param,
+	.get_conn_param		= qla4xxx_conn_get_param,
+	.get_session_param	= qla4xxx_session_get_param,
+	.get_ep_param           = qla4xxx_get_ep_param,
+	.ep_connect		= qla4xxx_ep_connect,
+	.ep_poll		= qla4xxx_ep_poll,
+	.ep_disconnect		= qla4xxx_ep_disconnect,
+	.get_stats		= qla4xxx_conn_get_stats,
+	.send_pdu		= iscsi_conn_send_pdu,
+	.xmit_task		= qla4xxx_task_xmit,
+	.cleanup_task		= qla4xxx_task_cleanup,
+	.alloc_pdu		= qla4xxx_alloc_pdu,
+
+	.get_host_param		= qla4xxx_host_get_param,
+	.set_iface_param	= qla4xxx_iface_set_param,
+	.get_iface_param	= qla4xxx_get_iface_param,
+	.bsg_request		= qla4xxx_bsg_request,
+	.send_ping		= qla4xxx_send_ping,
+	.get_chap		= qla4xxx_get_chap_list,
+	.delete_chap		= qla4xxx_delete_chap,
+};
+
+static struct scsi_transport_template *qla4xxx_scsi_transport;
+
+static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
+			     uint32_t iface_type, uint32_t payload_size,
+			     uint32_t pid, struct sockaddr *dst_addr)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	struct sockaddr_in *addr;
+	struct sockaddr_in6 *addr6;
+	uint32_t options = 0;
+	uint8_t ipaddr[IPv6_ADDR_LEN];
+	int rval;
+
+	memset(ipaddr, 0, IPv6_ADDR_LEN);
+	/* IPv4 to IPv4 */
+	if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
+	    (dst_addr->sa_family == AF_INET)) {
+		addr = (struct sockaddr_in *)dst_addr;
+		memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
+				  "dest: %pI4\n", __func__,
+				  &ha->ip_config.ip_address, ipaddr));
+		rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
+					 ipaddr);
+		if (rval)
+			rval = -EINVAL;
+	} else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
+		   (dst_addr->sa_family == AF_INET6)) {
+		/* IPv6 to IPv6 */
+		addr6 = (struct sockaddr_in6 *)dst_addr;
+		memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
+
+		options |= PING_IPV6_PROTOCOL_ENABLE;
+
+		/* Ping using LinkLocal address */
+		if ((iface_num == 0) || (iface_num == 1)) {
+			DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
+					  "src: %pI6 dest: %pI6\n", __func__,
+					  &ha->ip_config.ipv6_link_local_addr,
+					  ipaddr));
+			options |= PING_IPV6_LINKLOCAL_ADDR;
+			rval = qla4xxx_ping_iocb(ha, options, payload_size,
+						 pid, ipaddr);
+		} else {
+			ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
+				   "not supported\n", __func__, iface_num);
+			rval = -ENOSYS;
+			goto exit_send_ping;
+		}
+
+		/*
+		 * If ping using LinkLocal address fails, try ping using
+		 * IPv6 address
+		 */
+		if (rval != QLA_SUCCESS) {
+			options &= ~PING_IPV6_LINKLOCAL_ADDR;
+			if (iface_num == 0) {
+				options |= PING_IPV6_ADDR0;
+				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
+						  "Ping src: %pI6 "
+						  "dest: %pI6\n", __func__,
+						  &ha->ip_config.ipv6_addr0,
+						  ipaddr));
+			} else if (iface_num == 1) {
+				options |= PING_IPV6_ADDR1;
+				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
+						  "Ping src: %pI6 "
+						  "dest: %pI6\n", __func__,
+						  &ha->ip_config.ipv6_addr1,
+						  ipaddr));
+			}
+			rval = qla4xxx_ping_iocb(ha, options, payload_size,
+						 pid, ipaddr);
+			if (rval)
+				rval = -EINVAL;
+		}
+	} else
+		rval = -ENOSYS;
+exit_send_ping:
+	return rval;
+}
+
+static umode_t ql4_attr_is_visible(int param_type, int param)
+{
+	switch (param_type) {
+	case ISCSI_HOST_PARAM:
+		switch (param) {
+		case ISCSI_HOST_PARAM_HWADDRESS:
+		case ISCSI_HOST_PARAM_IPADDRESS:
+		case ISCSI_HOST_PARAM_INITIATOR_NAME:
+		case ISCSI_HOST_PARAM_PORT_STATE:
+		case ISCSI_HOST_PARAM_PORT_SPEED:
+			return S_IRUGO;
+		default:
+			return 0;
+		}
+	case ISCSI_PARAM:
+		switch (param) {
+		case ISCSI_PARAM_PERSISTENT_ADDRESS:
+		case ISCSI_PARAM_PERSISTENT_PORT:
+		case ISCSI_PARAM_CONN_ADDRESS:
+		case ISCSI_PARAM_CONN_PORT:
+		case ISCSI_PARAM_TARGET_NAME:
+		case ISCSI_PARAM_TPGT:
+		case ISCSI_PARAM_TARGET_ALIAS:
+		case ISCSI_PARAM_MAX_BURST:
+		case ISCSI_PARAM_MAX_R2T:
+		case ISCSI_PARAM_FIRST_BURST:
+		case ISCSI_PARAM_MAX_RECV_DLENGTH:
+		case ISCSI_PARAM_MAX_XMIT_DLENGTH:
+		case ISCSI_PARAM_IFACE_NAME:
+		case ISCSI_PARAM_CHAP_OUT_IDX:
+		case ISCSI_PARAM_CHAP_IN_IDX:
+		case ISCSI_PARAM_USERNAME:
+		case ISCSI_PARAM_PASSWORD:
+		case ISCSI_PARAM_USERNAME_IN:
+		case ISCSI_PARAM_PASSWORD_IN:
+			return S_IRUGO;
+		default:
+			return 0;
+		}
+	case ISCSI_NET_PARAM:
+		switch (param) {
+		case ISCSI_NET_PARAM_IPV4_ADDR:
+		case ISCSI_NET_PARAM_IPV4_SUBNET:
+		case ISCSI_NET_PARAM_IPV4_GW:
+		case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
+		case ISCSI_NET_PARAM_IFACE_ENABLE:
+		case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
+		case ISCSI_NET_PARAM_IPV6_ADDR:
+		case ISCSI_NET_PARAM_IPV6_ROUTER:
+		case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
+		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
+		case ISCSI_NET_PARAM_VLAN_ID:
+		case ISCSI_NET_PARAM_VLAN_PRIORITY:
+		case ISCSI_NET_PARAM_VLAN_ENABLED:
+		case ISCSI_NET_PARAM_MTU:
+		case ISCSI_NET_PARAM_PORT:
+			return S_IRUGO;
+		default:
+			return 0;
+		}
+	}
+
+	return 0;
+}
+
+static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
+				  uint32_t *num_entries, char *buf)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	struct ql4_chap_table *chap_table;
+	struct iscsi_chap_rec *chap_rec;
+	int max_chap_entries = 0;
+	int valid_chap_entries = 0;
+	int ret = 0, i;
+
+	if (is_qla8022(ha))
+		max_chap_entries = (ha->hw.flt_chap_size / 2) /
+					sizeof(struct ql4_chap_table);
+	else
+		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
+
+	ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
+			__func__, *num_entries, chap_tbl_idx);
+
+	if (!buf) {
+		ret = -ENOMEM;
+		goto exit_get_chap_list;
+	}
+
+	chap_rec = (struct iscsi_chap_rec *) buf;
+	mutex_lock(&ha->chap_sem);
+	for (i = chap_tbl_idx; i < max_chap_entries; i++) {
+		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
+		if (chap_table->cookie !=
+		    __constant_cpu_to_le16(CHAP_VALID_COOKIE))
+			continue;
+
+		chap_rec->chap_tbl_idx = i;
+		strncpy(chap_rec->username, chap_table->name,
+			ISCSI_CHAP_AUTH_NAME_MAX_LEN);
+		strncpy(chap_rec->password, chap_table->secret,
+			QL4_CHAP_MAX_SECRET_LEN);
+		chap_rec->password_length = chap_table->secret_len;
+
+		if (chap_table->flags & BIT_7) /* local */
+			chap_rec->chap_type = CHAP_TYPE_OUT;
+
+		if (chap_table->flags & BIT_6) /* peer */
+			chap_rec->chap_type = CHAP_TYPE_IN;
+
+		chap_rec++;
+
+		valid_chap_entries++;
+		if (valid_chap_entries == *num_entries)
+			break;
+		else
+			continue;
+	}
+	mutex_unlock(&ha->chap_sem);
+
+exit_get_chap_list:
+	ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
+			__func__,  valid_chap_entries);
+	*num_entries = valid_chap_entries;
+	return ret;
+}
+
+static int __qla4xxx_is_chap_active(struct device *dev, void *data)
+{
+	int ret = 0;
+	uint16_t *chap_tbl_idx = (uint16_t *) data;
+	struct iscsi_cls_session *cls_session;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+
+	if (!iscsi_is_session_dev(dev))
+		goto exit_is_chap_active;
+
+	cls_session = iscsi_dev_to_session(dev);
+	sess = cls_session->dd_data;
+	ddb_entry = sess->dd_data;
+
+	if (iscsi_session_chkready(cls_session))
+		goto exit_is_chap_active;
+
+	if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
+		ret = 1;
+
+exit_is_chap_active:
+	return ret;
+}
+
+static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
+				  uint16_t chap_tbl_idx)
+{
+	int ret = 0;
+
+	ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
+				    __qla4xxx_is_chap_active);
+
+	return ret;
+}
+
+static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	struct ql4_chap_table *chap_table;
+	dma_addr_t chap_dma;
+	int max_chap_entries = 0;
+	uint32_t offset = 0;
+	uint32_t chap_size;
+	int ret = 0;
+
+	chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
+	if (chap_table == NULL)
+		return -ENOMEM;
+
+	memset(chap_table, 0, sizeof(struct ql4_chap_table));
+
+	if (is_qla8022(ha))
+		max_chap_entries = (ha->hw.flt_chap_size / 2) /
+				   sizeof(struct ql4_chap_table);
+	else
+		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
+
+	if (chap_tbl_idx > max_chap_entries) {
+		ret = -EINVAL;
+		goto exit_delete_chap;
+	}
+
+	/* Check if chap index is in use.
+	 * If chap is in use don't delet chap entry */
+	ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
+	if (ret) {
+		ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
+			   "delete from flash\n", chap_tbl_idx);
+		ret = -EBUSY;
+		goto exit_delete_chap;
+	}
+
+	chap_size = sizeof(struct ql4_chap_table);
+	if (is_qla40XX(ha))
+		offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
+	else {
+		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
+		/* flt_chap_size is CHAP table size for both ports
+		 * so divide it by 2 to calculate the offset for second port
+		 */
+		if (ha->port_num == 1)
+			offset += (ha->hw.flt_chap_size / 2);
+		offset += (chap_tbl_idx * chap_size);
+	}
+
+	ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
+	if (ret != QLA_SUCCESS) {
+		ret = -EINVAL;
+		goto exit_delete_chap;
+	}
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
+			  __le16_to_cpu(chap_table->cookie)));
+
+	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
+		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
+		goto exit_delete_chap;
+	}
+
+	chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
+
+	offset = FLASH_CHAP_OFFSET |
+			(chap_tbl_idx * sizeof(struct ql4_chap_table));
+	ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
+				FLASH_OPT_RMW_COMMIT);
+	if (ret == QLA_SUCCESS && ha->chap_list) {
+		mutex_lock(&ha->chap_sem);
+		/* Update ha chap_list cache */
+		memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
+			chap_table, sizeof(struct ql4_chap_table));
+		mutex_unlock(&ha->chap_sem);
+	}
+	if (ret != QLA_SUCCESS)
+		ret =  -EINVAL;
+
+exit_delete_chap:
+	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
+	return ret;
+}
+
+static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
+				   enum iscsi_param_type param_type,
+				   int param, char *buf)
+{
+	struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	int len = -ENOSYS;
+
+	if (param_type != ISCSI_NET_PARAM)
+		return -ENOSYS;
+
+	switch (param) {
+	case ISCSI_NET_PARAM_IPV4_ADDR:
+		len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
+		break;
+	case ISCSI_NET_PARAM_IPV4_SUBNET:
+		len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
+		break;
+	case ISCSI_NET_PARAM_IPV4_GW:
+		len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
+		break;
+	case ISCSI_NET_PARAM_IFACE_ENABLE:
+		if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
+			len = sprintf(buf, "%s\n",
+				      (ha->ip_config.ipv4_options &
+				       IPOPT_IPV4_PROTOCOL_ENABLE) ?
+				      "enabled" : "disabled");
+		else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
+			len = sprintf(buf, "%s\n",
+				      (ha->ip_config.ipv6_options &
+				       IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
+				       "enabled" : "disabled");
+		break;
+	case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
+		len = sprintf(buf, "%s\n",
+			      (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
+			      "dhcp" : "static");
+		break;
+	case ISCSI_NET_PARAM_IPV6_ADDR:
+		if (iface->iface_num == 0)
+			len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
+		if (iface->iface_num == 1)
+			len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
+		break;
+	case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
+		len = sprintf(buf, "%pI6\n",
+			      &ha->ip_config.ipv6_link_local_addr);
+		break;
+	case ISCSI_NET_PARAM_IPV6_ROUTER:
+		len = sprintf(buf, "%pI6\n",
+			      &ha->ip_config.ipv6_default_router_addr);
+		break;
+	case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
+		len = sprintf(buf, "%s\n",
+			      (ha->ip_config.ipv6_addl_options &
+			       IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
+			       "nd" : "static");
+		break;
+	case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
+		len = sprintf(buf, "%s\n",
+			      (ha->ip_config.ipv6_addl_options &
+			       IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
+			       "auto" : "static");
+		break;
+	case ISCSI_NET_PARAM_VLAN_ID:
+		if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
+			len = sprintf(buf, "%d\n",
+				      (ha->ip_config.ipv4_vlan_tag &
+				       ISCSI_MAX_VLAN_ID));
+		else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
+			len = sprintf(buf, "%d\n",
+				      (ha->ip_config.ipv6_vlan_tag &
+				       ISCSI_MAX_VLAN_ID));
+		break;
+	case ISCSI_NET_PARAM_VLAN_PRIORITY:
+		if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
+			len = sprintf(buf, "%d\n",
+				      ((ha->ip_config.ipv4_vlan_tag >> 13) &
+					ISCSI_MAX_VLAN_PRIORITY));
+		else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
+			len = sprintf(buf, "%d\n",
+				      ((ha->ip_config.ipv6_vlan_tag >> 13) &
+					ISCSI_MAX_VLAN_PRIORITY));
+		break;
+	case ISCSI_NET_PARAM_VLAN_ENABLED:
+		if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
+			len = sprintf(buf, "%s\n",
+				      (ha->ip_config.ipv4_options &
+				       IPOPT_VLAN_TAGGING_ENABLE) ?
+				       "enabled" : "disabled");
+		else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
+			len = sprintf(buf, "%s\n",
+				      (ha->ip_config.ipv6_options &
+				       IPV6_OPT_VLAN_TAGGING_ENABLE) ?
+				       "enabled" : "disabled");
+		break;
+	case ISCSI_NET_PARAM_MTU:
+		len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
+		break;
+	case ISCSI_NET_PARAM_PORT:
+		if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
+			len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
+		else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
+			len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
+		break;
+	default:
+		len = -ENOSYS;
+	}
+
+	return len;
+}
+
+static struct iscsi_endpoint *
+qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
+		   int non_blocking)
+{
+	int ret;
+	struct iscsi_endpoint *ep;
+	struct qla_endpoint *qla_ep;
+	struct scsi_qla_host *ha;
+	struct sockaddr_in *addr;
+	struct sockaddr_in6 *addr6;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	if (!shost) {
+		ret = -ENXIO;
+		printk(KERN_ERR "%s: shost is NULL\n",
+		       __func__);
+		return ERR_PTR(ret);
+	}
+
+	ha = iscsi_host_priv(shost);
+
+	ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
+	if (!ep) {
+		ret = -ENOMEM;
+		return ERR_PTR(ret);
+	}
+
+	qla_ep = ep->dd_data;
+	memset(qla_ep, 0, sizeof(struct qla_endpoint));
+	if (dst_addr->sa_family == AF_INET) {
+		memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
+		addr = (struct sockaddr_in *)&qla_ep->dst_addr;
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
+				  (char *)&addr->sin_addr));
+	} else if (dst_addr->sa_family == AF_INET6) {
+		memcpy(&qla_ep->dst_addr, dst_addr,
+		       sizeof(struct sockaddr_in6));
+		addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
+				  (char *)&addr6->sin6_addr));
+	}
+
+	qla_ep->host = shost;
+
+	return ep;
+}
+
+static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
+{
+	struct qla_endpoint *qla_ep;
+	struct scsi_qla_host *ha;
+	int ret = 0;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	qla_ep = ep->dd_data;
+	ha = to_qla_host(qla_ep->host);
+
+	if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
+		ret = 1;
+
+	return ret;
+}
+
+static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
+{
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	iscsi_destroy_endpoint(ep);
+}
+
+static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
+				enum iscsi_param param,
+				char *buf)
+{
+	struct qla_endpoint *qla_ep = ep->dd_data;
+	struct sockaddr *dst_addr;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+
+	switch (param) {
+	case ISCSI_PARAM_CONN_PORT:
+	case ISCSI_PARAM_CONN_ADDRESS:
+		if (!qla_ep)
+			return -ENOTCONN;
+
+		dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
+		if (!dst_addr)
+			return -ENOTCONN;
+
+		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
+						 &qla_ep->dst_addr, param, buf);
+	default:
+		return -ENOSYS;
+	}
+}
+
+static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
+				   struct iscsi_stats *stats)
+{
+	struct iscsi_session *sess;
+	struct iscsi_cls_session *cls_sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+	struct ql_iscsi_stats *ql_iscsi_stats;
+	int stats_size;
+	int ret;
+	dma_addr_t iscsi_stats_dma;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+
+	cls_sess = iscsi_conn_to_session(cls_conn);
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
+	/* Allocate memory */
+	ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
+					    &iscsi_stats_dma, GFP_KERNEL);
+	if (!ql_iscsi_stats) {
+		ql4_printk(KERN_ERR, ha,
+			   "Unable to allocate memory for iscsi stats\n");
+		goto exit_get_stats;
+	}
+
+	ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
+				     iscsi_stats_dma);
+	if (ret != QLA_SUCCESS) {
+		ql4_printk(KERN_ERR, ha,
+			   "Unable to retreive iscsi stats\n");
+		goto free_stats;
+	}
+
+	/* octets */
+	stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
+	stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
+	/* xmit pdus */
+	stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
+	stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
+	stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
+	stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
+	stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
+	stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
+	stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
+	stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
+	/* recv pdus */
+	stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
+	stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
+	stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
+	stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
+	stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
+	stats->logoutrsp_pdus =
+			le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
+	stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
+	stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
+	stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
+
+free_stats:
+	dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
+			  iscsi_stats_dma);
+exit_get_stats:
+	return;
+}
+
+static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
+{
+	struct iscsi_cls_session *session;
+	struct iscsi_session *sess;
+	unsigned long flags;
+	enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
+
+	session = starget_to_session(scsi_target(sc->device));
+	sess = session->dd_data;
+
+	spin_lock_irqsave(&session->lock, flags);
+	if (session->state == ISCSI_SESSION_FAILED)
+		ret = BLK_EH_RESET_TIMER;
+	spin_unlock_irqrestore(&session->lock, flags);
+
+	return ret;
+}
+
+static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+	uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
+
+	qla4xxx_get_firmware_state(ha);
+
+	switch (ha->addl_fw_state & 0x0F00) {
+	case FW_ADDSTATE_LINK_SPEED_10MBPS:
+		speed = ISCSI_PORT_SPEED_10MBPS;
+		break;
+	case FW_ADDSTATE_LINK_SPEED_100MBPS:
+		speed = ISCSI_PORT_SPEED_100MBPS;
+		break;
+	case FW_ADDSTATE_LINK_SPEED_1GBPS:
+		speed = ISCSI_PORT_SPEED_1GBPS;
+		break;
+	case FW_ADDSTATE_LINK_SPEED_10GBPS:
+		speed = ISCSI_PORT_SPEED_10GBPS;
+		break;
+	}
+	ihost->port_speed = speed;
+}
+
+static void qla4xxx_set_port_state(struct Scsi_Host *shost)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+	uint32_t state = ISCSI_PORT_STATE_DOWN;
+
+	if (test_bit(AF_LINK_UP, &ha->flags))
+		state = ISCSI_PORT_STATE_UP;
+
+	ihost->port_state = state;
+}
+
+static int qla4xxx_host_get_param(struct Scsi_Host *shost,
+				  enum iscsi_host_param param, char *buf)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	int len;
+
+	switch (param) {
+	case ISCSI_HOST_PARAM_HWADDRESS:
+		len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
+		break;
+	case ISCSI_HOST_PARAM_IPADDRESS:
+		len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
+		break;
+	case ISCSI_HOST_PARAM_INITIATOR_NAME:
+		len = sprintf(buf, "%s\n", ha->name_string);
+		break;
+	case ISCSI_HOST_PARAM_PORT_STATE:
+		qla4xxx_set_port_state(shost);
+		len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
+		break;
+	case ISCSI_HOST_PARAM_PORT_SPEED:
+		qla4xxx_set_port_speed(shost);
+		len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
+		break;
+	default:
+		return -ENOSYS;
+	}
+
+	return len;
+}
+
+static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
+{
+	if (ha->iface_ipv4)
+		return;
+
+	/* IPv4 */
+	ha->iface_ipv4 = iscsi_create_iface(ha->host,
+					    &qla4xxx_iscsi_transport,
+					    ISCSI_IFACE_TYPE_IPV4, 0, 0);
+	if (!ha->iface_ipv4)
+		ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
+			   "iface0.\n");
+}
+
+static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
+{
+	if (!ha->iface_ipv6_0)
+		/* IPv6 iface-0 */
+		ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
+						      &qla4xxx_iscsi_transport,
+						      ISCSI_IFACE_TYPE_IPV6, 0,
+						      0);
+	if (!ha->iface_ipv6_0)
+		ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
+			   "iface0.\n");
+
+	if (!ha->iface_ipv6_1)
+		/* IPv6 iface-1 */
+		ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
+						      &qla4xxx_iscsi_transport,
+						      ISCSI_IFACE_TYPE_IPV6, 1,
+						      0);
+	if (!ha->iface_ipv6_1)
+		ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
+			   "iface1.\n");
+}
+
+static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
+{
+	if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
+		qla4xxx_create_ipv4_iface(ha);
+
+	if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
+		qla4xxx_create_ipv6_iface(ha);
+}
+
+static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
+{
+	if (ha->iface_ipv4) {
+		iscsi_destroy_iface(ha->iface_ipv4);
+		ha->iface_ipv4 = NULL;
+	}
+}
+
+static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
+{
+	if (ha->iface_ipv6_0) {
+		iscsi_destroy_iface(ha->iface_ipv6_0);
+		ha->iface_ipv6_0 = NULL;
+	}
+	if (ha->iface_ipv6_1) {
+		iscsi_destroy_iface(ha->iface_ipv6_1);
+		ha->iface_ipv6_1 = NULL;
+	}
+}
+
+static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
+{
+	qla4xxx_destroy_ipv4_iface(ha);
+	qla4xxx_destroy_ipv6_iface(ha);
+}
+
+static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
+			     struct iscsi_iface_param_info *iface_param,
+			     struct addr_ctrl_blk *init_fw_cb)
+{
+	/*
+	 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
+	 * iface_num 1 is valid only for IPv6 Addr.
+	 */
+	switch (iface_param->param) {
+	case ISCSI_NET_PARAM_IPV6_ADDR:
+		if (iface_param->iface_num & 0x1)
+			/* IPv6 Addr 1 */
+			memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
+			       sizeof(init_fw_cb->ipv6_addr1));
+		else
+			/* IPv6 Addr 0 */
+			memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
+			       sizeof(init_fw_cb->ipv6_addr0));
+		break;
+	case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
+		if (iface_param->iface_num & 0x1)
+			break;
+		memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
+		       sizeof(init_fw_cb->ipv6_if_id));
+		break;
+	case ISCSI_NET_PARAM_IPV6_ROUTER:
+		if (iface_param->iface_num & 0x1)
+			break;
+		memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
+		       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
+		break;
+	case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
+		/* Autocfg applies to even interface */
+		if (iface_param->iface_num & 0x1)
+			break;
+
+		if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
+			init_fw_cb->ipv6_addtl_opts &=
+				cpu_to_le16(
+				  ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
+		else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
+			init_fw_cb->ipv6_addtl_opts |=
+				cpu_to_le16(
+				  IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
+		else
+			ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
+				   "IPv6 addr\n");
+		break;
+	case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
+		/* Autocfg applies to even interface */
+		if (iface_param->iface_num & 0x1)
+			break;
+
+		if (iface_param->value[0] ==
+		    ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
+			init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
+					IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
+		else if (iface_param->value[0] ==
+			 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
+			init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
+				       ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
+		else
+			ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
+				   "IPv6 linklocal addr\n");
+		break;
+	case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
+		/* Autocfg applies to even interface */
+		if (iface_param->iface_num & 0x1)
+			break;
+
+		if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
+			memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
+			       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
+		break;
+	case ISCSI_NET_PARAM_IFACE_ENABLE:
+		if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
+			init_fw_cb->ipv6_opts |=
+				cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
+			qla4xxx_create_ipv6_iface(ha);
+		} else {
+			init_fw_cb->ipv6_opts &=
+				cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
+					    0xFFFF);
+			qla4xxx_destroy_ipv6_iface(ha);
+		}
+		break;
+	case ISCSI_NET_PARAM_VLAN_TAG:
+		if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
+			break;
+		init_fw_cb->ipv6_vlan_tag =
+				cpu_to_be16(*(uint16_t *)iface_param->value);
+		break;
+	case ISCSI_NET_PARAM_VLAN_ENABLED:
+		if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
+			init_fw_cb->ipv6_opts |=
+				cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
+		else
+			init_fw_cb->ipv6_opts &=
+				cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
+		break;
+	case ISCSI_NET_PARAM_MTU:
+		init_fw_cb->eth_mtu_size =
+				cpu_to_le16(*(uint16_t *)iface_param->value);
+		break;
+	case ISCSI_NET_PARAM_PORT:
+		/* Autocfg applies to even interface */
+		if (iface_param->iface_num & 0x1)
+			break;
+
+		init_fw_cb->ipv6_port =
+				cpu_to_le16(*(uint16_t *)iface_param->value);
+		break;
+	default:
+		ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
+			   iface_param->param);
+		break;
+	}
+}
+
+static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
+			     struct iscsi_iface_param_info *iface_param,
+			     struct addr_ctrl_blk *init_fw_cb)
+{
+	switch (iface_param->param) {
+	case ISCSI_NET_PARAM_IPV4_ADDR:
+		memcpy(init_fw_cb->ipv4_addr, iface_param->value,
+		       sizeof(init_fw_cb->ipv4_addr));
+		break;
+	case ISCSI_NET_PARAM_IPV4_SUBNET:
+		memcpy(init_fw_cb->ipv4_subnet,	iface_param->value,
+		       sizeof(init_fw_cb->ipv4_subnet));
+		break;
+	case ISCSI_NET_PARAM_IPV4_GW:
+		memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
+		       sizeof(init_fw_cb->ipv4_gw_addr));
+		break;
+	case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
+		if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
+			init_fw_cb->ipv4_tcp_opts |=
+					cpu_to_le16(TCPOPT_DHCP_ENABLE);
+		else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
+			init_fw_cb->ipv4_tcp_opts &=
+					cpu_to_le16(~TCPOPT_DHCP_ENABLE);
+		else
+			ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
+		break;
+	case ISCSI_NET_PARAM_IFACE_ENABLE:
+		if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
+			init_fw_cb->ipv4_ip_opts |=
+				cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
+			qla4xxx_create_ipv4_iface(ha);
+		} else {
+			init_fw_cb->ipv4_ip_opts &=
+				cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
+					    0xFFFF);
+			qla4xxx_destroy_ipv4_iface(ha);
+		}
+		break;
+	case ISCSI_NET_PARAM_VLAN_TAG:
+		if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
+			break;
+		init_fw_cb->ipv4_vlan_tag =
+				cpu_to_be16(*(uint16_t *)iface_param->value);
+		break;
+	case ISCSI_NET_PARAM_VLAN_ENABLED:
+		if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
+			init_fw_cb->ipv4_ip_opts |=
+					cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
+		else
+			init_fw_cb->ipv4_ip_opts &=
+					cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
+		break;
+	case ISCSI_NET_PARAM_MTU:
+		init_fw_cb->eth_mtu_size =
+				cpu_to_le16(*(uint16_t *)iface_param->value);
+		break;
+	case ISCSI_NET_PARAM_PORT:
+		init_fw_cb->ipv4_port =
+				cpu_to_le16(*(uint16_t *)iface_param->value);
+		break;
+	default:
+		ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
+			   iface_param->param);
+		break;
+	}
+}
+
+static void
+qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
+{
+	struct addr_ctrl_blk_def *acb;
+	acb = (struct addr_ctrl_blk_def *)init_fw_cb;
+	memset(acb->reserved1, 0, sizeof(acb->reserved1));
+	memset(acb->reserved2, 0, sizeof(acb->reserved2));
+	memset(acb->reserved3, 0, sizeof(acb->reserved3));
+	memset(acb->reserved4, 0, sizeof(acb->reserved4));
+	memset(acb->reserved5, 0, sizeof(acb->reserved5));
+	memset(acb->reserved6, 0, sizeof(acb->reserved6));
+	memset(acb->reserved7, 0, sizeof(acb->reserved7));
+	memset(acb->reserved8, 0, sizeof(acb->reserved8));
+	memset(acb->reserved9, 0, sizeof(acb->reserved9));
+	memset(acb->reserved10, 0, sizeof(acb->reserved10));
+	memset(acb->reserved11, 0, sizeof(acb->reserved11));
+	memset(acb->reserved12, 0, sizeof(acb->reserved12));
+	memset(acb->reserved13, 0, sizeof(acb->reserved13));
+	memset(acb->reserved14, 0, sizeof(acb->reserved14));
+	memset(acb->reserved15, 0, sizeof(acb->reserved15));
+}
+
+static int
+qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	int rval = 0;
+	struct iscsi_iface_param_info *iface_param = NULL;
+	struct addr_ctrl_blk *init_fw_cb = NULL;
+	dma_addr_t init_fw_cb_dma;
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	uint32_t rem = len;
+	struct nlattr *attr;
+
+	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+					sizeof(struct addr_ctrl_blk),
+					&init_fw_cb_dma, GFP_KERNEL);
+	if (!init_fw_cb) {
+		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
+			   __func__);
+		return -ENOMEM;
+	}
+
+	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
+		ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
+		rval = -EIO;
+		goto exit_init_fw_cb;
+	}
+
+	nla_for_each_attr(attr, data, len, rem) {
+		iface_param = nla_data(attr);
+
+		if (iface_param->param_type != ISCSI_NET_PARAM)
+			continue;
+
+		switch (iface_param->iface_type) {
+		case ISCSI_IFACE_TYPE_IPV4:
+			switch (iface_param->iface_num) {
+			case 0:
+				qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
+				break;
+			default:
+				/* Cannot have more than one IPv4 interface */
+				ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
+					   "number = %d\n",
+					   iface_param->iface_num);
+				break;
+			}
+			break;
+		case ISCSI_IFACE_TYPE_IPV6:
+			switch (iface_param->iface_num) {
+			case 0:
+			case 1:
+				qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
+				break;
+			default:
+				/* Cannot have more than two IPv6 interface */
+				ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
+					   "number = %d\n",
+					   iface_param->iface_num);
+				break;
+			}
+			break;
+		default:
+			ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
+			break;
+		}
+	}
+
+	init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
+
+	rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
+				 sizeof(struct addr_ctrl_blk),
+				 FLASH_OPT_RMW_COMMIT);
+	if (rval != QLA_SUCCESS) {
+		ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
+			   __func__);
+		rval = -EIO;
+		goto exit_init_fw_cb;
+	}
+
+	rval = qla4xxx_disable_acb(ha);
+	if (rval != QLA_SUCCESS) {
+		ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
+			   __func__);
+		rval = -EIO;
+		goto exit_init_fw_cb;
+	}
+
+	wait_for_completion_timeout(&ha->disable_acb_comp,
+				    DISABLE_ACB_TOV * HZ);
+
+	qla4xxx_initcb_to_acb(init_fw_cb);
+
+	rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
+	if (rval != QLA_SUCCESS) {
+		ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
+			   __func__);
+		rval = -EIO;
+		goto exit_init_fw_cb;
+	}
+
+	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
+	qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
+				  init_fw_cb_dma);
+
+exit_init_fw_cb:
+	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
+			  init_fw_cb, init_fw_cb_dma);
+
+	return rval;
+}
+
+static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
+				     enum iscsi_param param, char *buf)
+{
+	struct iscsi_session *sess = cls_sess->dd_data;
+	struct ddb_entry *ddb_entry = sess->dd_data;
+	struct scsi_qla_host *ha = ddb_entry->ha;
+	int rval, len;
+	uint16_t idx;
+
+	switch (param) {
+	case ISCSI_PARAM_CHAP_IN_IDX:
+		rval = qla4xxx_get_chap_index(ha, sess->username_in,
+					      sess->password_in, BIDI_CHAP,
+					      &idx);
+		if (rval)
+			return -EINVAL;
+
+		len = sprintf(buf, "%hu\n", idx);
+		break;
+	case ISCSI_PARAM_CHAP_OUT_IDX:
+		rval = qla4xxx_get_chap_index(ha, sess->username,
+					      sess->password, LOCAL_CHAP,
+					      &idx);
+		if (rval)
+			return -EINVAL;
+
+		len = sprintf(buf, "%hu\n", idx);
+		break;
+	default:
+		return iscsi_session_get_param(cls_sess, param, buf);
+	}
+
+	return len;
+}
+
+static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
+				  enum iscsi_param param, char *buf)
+{
+	struct iscsi_conn *conn;
+	struct qla_conn *qla_conn;
+	struct sockaddr *dst_addr;
+	int len = 0;
+
+	conn = cls_conn->dd_data;
+	qla_conn = conn->dd_data;
+	dst_addr = &qla_conn->qla_ep->dst_addr;
+
+	switch (param) {
+	case ISCSI_PARAM_CONN_PORT:
+	case ISCSI_PARAM_CONN_ADDRESS:
+		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
+						 dst_addr, param, buf);
+	default:
+		return iscsi_conn_get_param(cls_conn, param, buf);
+	}
+
+	return len;
+
+}
+
+int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
+{
+	uint32_t mbx_sts = 0;
+	uint16_t tmp_ddb_index;
+	int ret;
+
+get_ddb_index:
+	tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
+
+	if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "Free DDB index not available\n"));
+		ret = QLA_ERROR;
+		goto exit_get_ddb_index;
+	}
+
+	if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
+		goto get_ddb_index;
+
+	DEBUG2(ql4_printk(KERN_INFO, ha,
+			  "Found a free DDB index at %d\n", tmp_ddb_index));
+	ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
+	if (ret == QLA_ERROR) {
+		if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
+			ql4_printk(KERN_INFO, ha,
+				   "DDB index = %d not available trying next\n",
+				   tmp_ddb_index);
+			goto get_ddb_index;
+		}
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "Free FW DDB not available\n"));
+	}
+
+	*ddb_index = tmp_ddb_index;
+
+exit_get_ddb_index:
+	return ret;
+}
+
+static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
+				   struct ddb_entry *ddb_entry,
+				   char *existing_ipaddr,
+				   char *user_ipaddr)
+{
+	uint8_t dst_ipaddr[IPv6_ADDR_LEN];
+	char formatted_ipaddr[DDB_IPADDR_LEN];
+	int status = QLA_SUCCESS, ret = 0;
+
+	if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
+		ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
+			       '\0', NULL);
+		if (ret == 0) {
+			status = QLA_ERROR;
+			goto out_match;
+		}
+		ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
+	} else {
+		ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
+			       '\0', NULL);
+		if (ret == 0) {
+			status = QLA_ERROR;
+			goto out_match;
+		}
+		ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
+	}
+
+	if (strcmp(existing_ipaddr, formatted_ipaddr))
+		status = QLA_ERROR;
+
+out_match:
+	return status;
+}
+
+static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
+				      struct iscsi_cls_conn *cls_conn)
+{
+	int idx = 0, max_ddbs, rval;
+	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
+	struct iscsi_session *sess, *existing_sess;
+	struct iscsi_conn *conn, *existing_conn;
+	struct ddb_entry *ddb_entry;
+
+	sess = cls_sess->dd_data;
+	conn = cls_conn->dd_data;
+
+	if (sess->targetname == NULL ||
+	    conn->persistent_address == NULL ||
+	    conn->persistent_port == 0)
+		return QLA_ERROR;
+
+	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
+				     MAX_DEV_DB_ENTRIES;
+
+	for (idx = 0; idx < max_ddbs; idx++) {
+		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
+		if (ddb_entry == NULL)
+			continue;
+
+		if (ddb_entry->ddb_type != FLASH_DDB)
+			continue;
+
+		existing_sess = ddb_entry->sess->dd_data;
+		existing_conn = ddb_entry->conn->dd_data;
+
+		if (existing_sess->targetname == NULL ||
+		    existing_conn->persistent_address == NULL ||
+		    existing_conn->persistent_port == 0)
+			continue;
+
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "IQN = %s User IQN = %s\n",
+				  existing_sess->targetname,
+				  sess->targetname));
+
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "IP = %s User IP = %s\n",
+				  existing_conn->persistent_address,
+				  conn->persistent_address));
+
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "Port = %d User Port = %d\n",
+				  existing_conn->persistent_port,
+				  conn->persistent_port));
+
+		if (strcmp(existing_sess->targetname, sess->targetname))
+			continue;
+		rval = qla4xxx_match_ipaddress(ha, ddb_entry,
+					existing_conn->persistent_address,
+					conn->persistent_address);
+		if (rval == QLA_ERROR)
+			continue;
+		if (existing_conn->persistent_port != conn->persistent_port)
+			continue;
+		break;
+	}
+
+	if (idx == max_ddbs)
+		return QLA_ERROR;
+
+	DEBUG2(ql4_printk(KERN_INFO, ha,
+			  "Match found in fwdb sessions\n"));
+	return QLA_SUCCESS;
+}
+
+static struct iscsi_cls_session *
+qla4xxx_session_create(struct iscsi_endpoint *ep,
+			uint16_t cmds_max, uint16_t qdepth,
+			uint32_t initial_cmdsn)
+{
+	struct iscsi_cls_session *cls_sess;
+	struct scsi_qla_host *ha;
+	struct qla_endpoint *qla_ep;
+	struct ddb_entry *ddb_entry;
+	uint16_t ddb_index;
+	struct iscsi_session *sess;
+	struct sockaddr *dst_addr;
+	int ret;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	if (!ep) {
+		printk(KERN_ERR "qla4xxx: missing ep.\n");
+		return NULL;
+	}
+
+	qla_ep = ep->dd_data;
+	dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
+	ha = to_qla_host(qla_ep->host);
+
+	ret = qla4xxx_get_ddb_index(ha, &ddb_index);
+	if (ret == QLA_ERROR)
+		return NULL;
+
+	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
+				       cmds_max, sizeof(struct ddb_entry),
+				       sizeof(struct ql4_task_data),
+				       initial_cmdsn, ddb_index);
+	if (!cls_sess)
+		return NULL;
+
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ddb_entry->fw_ddb_index = ddb_index;
+	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
+	ddb_entry->ha = ha;
+	ddb_entry->sess = cls_sess;
+	ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
+	ddb_entry->ddb_change = qla4xxx_ddb_change;
+	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
+	ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
+	ha->tot_ddbs++;
+
+	return cls_sess;
+}
+
+static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+	unsigned long flags;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	qla4xxx_free_ddb(ha, ddb_entry);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	iscsi_session_teardown(cls_sess);
+}
+
+static struct iscsi_cls_conn *
+qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
+{
+	struct iscsi_cls_conn *cls_conn;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
+				    conn_idx);
+	if (!cls_conn)
+		return NULL;
+
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ddb_entry->conn = cls_conn;
+
+	return cls_conn;
+}
+
+static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
+			     struct iscsi_cls_conn *cls_conn,
+			     uint64_t transport_fd, int is_leading)
+{
+	struct iscsi_conn *conn;
+	struct qla_conn *qla_conn;
+	struct iscsi_endpoint *ep;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+
+	if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
+		return -EINVAL;
+	ep = iscsi_lookup_endpoint(transport_fd);
+	conn = cls_conn->dd_data;
+	qla_conn = conn->dd_data;
+	qla_conn->qla_ep = ep->dd_data;
+	return 0;
+}
+
+static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
+{
+	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+	struct dev_db_entry *fw_ddb_entry = NULL;
+	dma_addr_t fw_ddb_entry_dma;
+	uint32_t mbx_sts = 0;
+	int ret = 0;
+	int status = QLA_SUCCESS;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	/* Check if we have  matching FW DDB, if yes then do not
+	 * login to this target. This could cause target to logout previous
+	 * connection
+	 */
+	ret = qla4xxx_match_fwdb_session(ha, cls_conn);
+	if (ret == QLA_SUCCESS) {
+		ql4_printk(KERN_INFO, ha,
+			   "Session already exist in FW.\n");
+		ret = -EEXIST;
+		goto exit_conn_start;
+	}
+
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+					  &fw_ddb_entry_dma, GFP_KERNEL);
+	if (!fw_ddb_entry) {
+		ql4_printk(KERN_ERR, ha,
+			   "%s: Unable to allocate dma buffer\n", __func__);
+		ret = -ENOMEM;
+		goto exit_conn_start;
+	}
+
+	ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
+	if (ret) {
+		/* If iscsid is stopped and started then no need to do
+		* set param again since ddb state will be already
+		* active and FW does not allow set ddb to an
+		* active session.
+		*/
+		if (mbx_sts)
+			if (ddb_entry->fw_ddb_device_state ==
+						DDB_DS_SESSION_ACTIVE) {
+				ddb_entry->unblock_sess(ddb_entry->sess);
+				goto exit_set_param;
+			}
+
+		ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
+			   __func__, ddb_entry->fw_ddb_index);
+		goto exit_conn_start;
+	}
+
+	status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
+	if (status == QLA_ERROR) {
+		ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
+			   sess->targetname);
+		ret = -EINVAL;
+		goto exit_conn_start;
+	}
+
+	if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
+		ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
+
+	DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
+		      ddb_entry->fw_ddb_device_state));
+
+exit_set_param:
+	ret = 0;
+
+exit_conn_start:
+	if (fw_ddb_entry)
+		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+				  fw_ddb_entry, fw_ddb_entry_dma);
+	return ret;
+}
+
+static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
+{
+	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
+	struct iscsi_session *sess;
+	struct scsi_qla_host *ha;
+	struct ddb_entry *ddb_entry;
+	int options;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	options = LOGOUT_OPTION_CLOSE_SESSION;
+	if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
+		ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
+}
+
+static void qla4xxx_task_work(struct work_struct *wdata)
+{
+	struct ql4_task_data *task_data;
+	struct scsi_qla_host *ha;
+	struct passthru_status *sts;
+	struct iscsi_task *task;
+	struct iscsi_hdr *hdr;
+	uint8_t *data;
+	uint32_t data_len;
+	struct iscsi_conn *conn;
+	int hdr_len;
+	itt_t itt;
+
+	task_data = container_of(wdata, struct ql4_task_data, task_work);
+	ha = task_data->ha;
+	task = task_data->task;
+	sts = &task_data->sts;
+	hdr_len = sizeof(struct iscsi_hdr);
+
+	DEBUG3(printk(KERN_INFO "Status returned\n"));
+	DEBUG3(qla4xxx_dump_buffer(sts, 64));
+	DEBUG3(printk(KERN_INFO "Response buffer"));
+	DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
+
+	conn = task->conn;
+
+	switch (sts->completionStatus) {
+	case PASSTHRU_STATUS_COMPLETE:
+		hdr = (struct iscsi_hdr *)task_data->resp_buffer;
+		/* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
+		itt = sts->handle;
+		hdr->itt = itt;
+		data = task_data->resp_buffer + hdr_len;
+		data_len = task_data->resp_len - hdr_len;
+		iscsi_complete_pdu(conn, hdr, data, data_len);
+		break;
+	default:
+		ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
+			   sts->completionStatus);
+		break;
+	}
+	return;
+}
+
+static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
+{
+	struct ql4_task_data *task_data;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+	int hdr_len;
+
+	sess = task->conn->session;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+	task_data = task->dd_data;
+	memset(task_data, 0, sizeof(struct ql4_task_data));
+
+	if (task->sc) {
+		ql4_printk(KERN_INFO, ha,
+			   "%s: SCSI Commands not implemented\n", __func__);
+		return -EINVAL;
+	}
+
+	hdr_len = sizeof(struct iscsi_hdr);
+	task_data->ha = ha;
+	task_data->task = task;
+
+	if (task->data_count) {
+		task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
+						     task->data_count,
+						     PCI_DMA_TODEVICE);
+	}
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
+		      __func__, task->conn->max_recv_dlength, hdr_len));
+
+	task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
+	task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
+						    task_data->resp_len,
+						    &task_data->resp_dma,
+						    GFP_ATOMIC);
+	if (!task_data->resp_buffer)
+		goto exit_alloc_pdu;
+
+	task_data->req_len = task->data_count + hdr_len;
+	task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
+						   task_data->req_len,
+						   &task_data->req_dma,
+						   GFP_ATOMIC);
+	if (!task_data->req_buffer)
+		goto exit_alloc_pdu;
+
+	task->hdr = task_data->req_buffer;
+
+	INIT_WORK(&task_data->task_work, qla4xxx_task_work);
+
+	return 0;
+
+exit_alloc_pdu:
+	if (task_data->resp_buffer)
+		dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
+				  task_data->resp_buffer, task_data->resp_dma);
+
+	if (task_data->req_buffer)
+		dma_free_coherent(&ha->pdev->dev, task_data->req_len,
+				  task_data->req_buffer, task_data->req_dma);
+	return -ENOMEM;
+}
+
+static void qla4xxx_task_cleanup(struct iscsi_task *task)
+{
+	struct ql4_task_data *task_data;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+	int hdr_len;
+
+	hdr_len = sizeof(struct iscsi_hdr);
+	sess = task->conn->session;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+	task_data = task->dd_data;
+
+	if (task->data_count) {
+		dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
+				 task->data_count, PCI_DMA_TODEVICE);
+	}
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
+		      __func__, task->conn->max_recv_dlength, hdr_len));
+
+	dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
+			  task_data->resp_buffer, task_data->resp_dma);
+	dma_free_coherent(&ha->pdev->dev, task_data->req_len,
+			  task_data->req_buffer, task_data->req_dma);
+	return;
+}
+
+static int qla4xxx_task_xmit(struct iscsi_task *task)
+{
+	struct scsi_cmnd *sc = task->sc;
+	struct iscsi_session *sess = task->conn->session;
+	struct ddb_entry *ddb_entry = sess->dd_data;
+	struct scsi_qla_host *ha = ddb_entry->ha;
+
+	if (!sc)
+		return qla4xxx_send_passthru0(task);
+
+	ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
+		   __func__);
+	return -ENOSYS;
+}
+
+static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
+				     struct dev_db_entry *fw_ddb_entry,
+				     struct iscsi_cls_session *cls_sess,
+				     struct iscsi_cls_conn *cls_conn)
+{
+	int buflen = 0;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct iscsi_conn *conn;
+	char ip_addr[DDB_IPADDR_LEN];
+	uint16_t options = 0;
+
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	conn = cls_conn->dd_data;
+
+	ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
+
+	conn->max_recv_dlength = BYTE_UNITS *
+			  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
+
+	conn->max_xmit_dlength = BYTE_UNITS *
+			  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
+
+	sess->initial_r2t_en =
+			    (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
+
+	sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
+
+	sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
+
+	sess->first_burst = BYTE_UNITS *
+			       le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
+
+	sess->max_burst = BYTE_UNITS *
+				 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
+
+	sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
+
+	sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
+
+	conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
+
+	sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
+
+	options = le16_to_cpu(fw_ddb_entry->options);
+	if (options & DDB_OPT_IPV6_DEVICE)
+		sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
+	else
+		sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
+
+	iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
+			(char *)fw_ddb_entry->iscsi_name, buflen);
+	iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
+			(char *)ha->name_string, buflen);
+	iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
+			(char *)ip_addr, buflen);
+	iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
+			(char *)fw_ddb_entry->iscsi_alias, buflen);
+}
+
+void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
+					     struct ddb_entry *ddb_entry)
+{
+	struct iscsi_cls_session *cls_sess;
+	struct iscsi_cls_conn *cls_conn;
+	uint32_t ddb_state;
+	dma_addr_t fw_ddb_entry_dma;
+	struct dev_db_entry *fw_ddb_entry;
+
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+					  &fw_ddb_entry_dma, GFP_KERNEL);
+	if (!fw_ddb_entry) {
+		ql4_printk(KERN_ERR, ha,
+			   "%s: Unable to allocate dma buffer\n", __func__);
+		goto exit_session_conn_fwddb_param;
+	}
+
+	if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
+				    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
+				    NULL, NULL, NULL) == QLA_ERROR) {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
+				  "get_ddb_entry for fw_ddb_index %d\n",
+				  ha->host_no, __func__,
+				  ddb_entry->fw_ddb_index));
+		goto exit_session_conn_fwddb_param;
+	}
+
+	cls_sess = ddb_entry->sess;
+
+	cls_conn = ddb_entry->conn;
+
+	/* Update params */
+	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
+
+exit_session_conn_fwddb_param:
+	if (fw_ddb_entry)
+		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+				  fw_ddb_entry, fw_ddb_entry_dma);
+}
+
+void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
+				       struct ddb_entry *ddb_entry)
+{
+	struct iscsi_cls_session *cls_sess;
+	struct iscsi_cls_conn *cls_conn;
+	struct iscsi_session *sess;
+	struct iscsi_conn *conn;
+	uint32_t ddb_state;
+	dma_addr_t fw_ddb_entry_dma;
+	struct dev_db_entry *fw_ddb_entry;
+
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+					  &fw_ddb_entry_dma, GFP_KERNEL);
+	if (!fw_ddb_entry) {
+		ql4_printk(KERN_ERR, ha,
+			   "%s: Unable to allocate dma buffer\n", __func__);
+		goto exit_session_conn_param;
+	}
+
+	if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
+				    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
+				    NULL, NULL, NULL) == QLA_ERROR) {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
+				  "get_ddb_entry for fw_ddb_index %d\n",
+				  ha->host_no, __func__,
+				  ddb_entry->fw_ddb_index));
+		goto exit_session_conn_param;
+	}
+
+	cls_sess = ddb_entry->sess;
+	sess = cls_sess->dd_data;
+
+	cls_conn = ddb_entry->conn;
+	conn = cls_conn->dd_data;
+
+	/* Update timers after login */
+	ddb_entry->default_relogin_timeout =
+		(le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
+		 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
+		 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
+	ddb_entry->default_time2wait =
+				le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
+
+	/* Update params */
+	ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
+	conn->max_recv_dlength = BYTE_UNITS *
+			  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
+
+	conn->max_xmit_dlength = BYTE_UNITS *
+			  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
+
+	sess->initial_r2t_en =
+			    (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
+
+	sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
+
+	sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
+
+	sess->first_burst = BYTE_UNITS *
+			       le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
+
+	sess->max_burst = BYTE_UNITS *
+				 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
+
+	sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
+
+	sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
+
+	sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
+
+	memcpy(sess->initiatorname, ha->name_string,
+	       min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
+
+	iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
+			(char *)fw_ddb_entry->iscsi_alias, 0);
+
+exit_session_conn_param:
+	if (fw_ddb_entry)
+		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+				  fw_ddb_entry, fw_ddb_entry_dma);
+}
+
+/*
+ * Timer routines
+ */
+
+static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
+				unsigned long interval)
+{
+	DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
+		     __func__, ha->host->host_no));
+	init_timer(&ha->timer);
+	ha->timer.expires = jiffies + interval * HZ;
+	ha->timer.data = (unsigned long)ha;
+	ha->timer.function = (void (*)(unsigned long))func;
+	add_timer(&ha->timer);
+	ha->timer_active = 1;
+}
+
+static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
+{
+	del_timer_sync(&ha->timer);
+	ha->timer_active = 0;
+}
+
+/***
+ * qla4xxx_mark_device_missing - blocks the session
+ * @cls_session: Pointer to the session to be blocked
+ * @ddb_entry: Pointer to device database entry
+ *
+ * This routine marks a device missing and close connection.
+ **/
+void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
+{
+	iscsi_block_session(cls_session);
+}
+
+/**
+ * qla4xxx_mark_all_devices_missing - mark all devices as missing.
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine marks a device missing and resets the relogin retry count.
+ **/
+void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
+{
+	iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
+}
+
+static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
+				       struct ddb_entry *ddb_entry,
+				       struct scsi_cmnd *cmd)
+{
+	struct srb *srb;
+
+	srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
+	if (!srb)
+		return srb;
+
+	kref_init(&srb->srb_ref);
+	srb->ha = ha;
+	srb->ddb = ddb_entry;
+	srb->cmd = cmd;
+	srb->flags = 0;
+	CMD_SP(cmd) = (void *)srb;
+
+	return srb;
+}
+
+static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
+{
+	struct scsi_cmnd *cmd = srb->cmd;
+
+	if (srb->flags & SRB_DMA_VALID) {
+		scsi_dma_unmap(cmd);
+		srb->flags &= ~SRB_DMA_VALID;
+	}
+	CMD_SP(cmd) = NULL;
+}
+
+void qla4xxx_srb_compl(struct kref *ref)
+{
+	struct srb *srb = container_of(ref, struct srb, srb_ref);
+	struct scsi_cmnd *cmd = srb->cmd;
+	struct scsi_qla_host *ha = srb->ha;
+
+	qla4xxx_srb_free_dma(ha, srb);
+
+	mempool_free(srb, ha->srb_mempool);
+
+	cmd->scsi_done(cmd);
+}
+
+/**
+ * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
+ * @host: scsi host
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * Remarks:
+ * This routine is invoked by Linux to send a SCSI command to the driver.
+ * The mid-level driver tries to ensure that queuecommand never gets
+ * invoked concurrently with itself or the interrupt handler (although
+ * the interrupt handler may call this routine as part of request-
+ * completion handling).   Unfortunely, it sometimes calls the scheduler
+ * in interrupt context which is a big NO! NO!.
+ **/
+static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
+{
+	struct scsi_qla_host *ha = to_qla_host(host);
+	struct ddb_entry *ddb_entry = cmd->device->hostdata;
+	struct iscsi_cls_session *sess = ddb_entry->sess;
+	struct srb *srb;
+	int rval;
+
+	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
+		if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
+			cmd->result = DID_NO_CONNECT << 16;
+		else
+			cmd->result = DID_REQUEUE << 16;
+		goto qc_fail_command;
+	}
+
+	if (!sess) {
+		cmd->result = DID_IMM_RETRY << 16;
+		goto qc_fail_command;
+	}
+
+	rval = iscsi_session_chkready(sess);
+	if (rval) {
+		cmd->result = rval;
+		goto qc_fail_command;
+	}
+
+	if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+	    test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
+	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+	    test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
+	    test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
+	    !test_bit(AF_ONLINE, &ha->flags) ||
+	    !test_bit(AF_LINK_UP, &ha->flags) ||
+	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
+		goto qc_host_busy;
+
+	srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
+	if (!srb)
+		goto qc_host_busy;
+
+	rval = qla4xxx_send_command_to_isp(ha, srb);
+	if (rval != QLA_SUCCESS)
+		goto qc_host_busy_free_sp;
+
+	return 0;
+
+qc_host_busy_free_sp:
+	qla4xxx_srb_free_dma(ha, srb);
+	mempool_free(srb, ha->srb_mempool);
+
+qc_host_busy:
+	return SCSI_MLQUEUE_HOST_BUSY;
+
+qc_fail_command:
+	cmd->scsi_done(cmd);
+
+	return 0;
+}
+
+/**
+ * qla4xxx_mem_free - frees memory allocated to adapter
+ * @ha: Pointer to host adapter structure.
+ *
+ * Frees memory previously allocated by qla4xxx_mem_alloc
+ **/
+static void qla4xxx_mem_free(struct scsi_qla_host *ha)
+{
+	if (ha->queues)
+		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
+				  ha->queues_dma);
+
+	ha->queues_len = 0;
+	ha->queues = NULL;
+	ha->queues_dma = 0;
+	ha->request_ring = NULL;
+	ha->request_dma = 0;
+	ha->response_ring = NULL;
+	ha->response_dma = 0;
+	ha->shadow_regs = NULL;
+	ha->shadow_regs_dma = 0;
+
+	/* Free srb pool. */
+	if (ha->srb_mempool)
+		mempool_destroy(ha->srb_mempool);
+
+	ha->srb_mempool = NULL;
+
+	if (ha->chap_dma_pool)
+		dma_pool_destroy(ha->chap_dma_pool);
+
+	if (ha->chap_list)
+		vfree(ha->chap_list);
+	ha->chap_list = NULL;
+
+	if (ha->fw_ddb_dma_pool)
+		dma_pool_destroy(ha->fw_ddb_dma_pool);
+
+	/* release io space registers  */
+	if (is_qla8022(ha)) {
+		if (ha->nx_pcibase)
+			iounmap(
+			    (struct device_reg_82xx __iomem *)ha->nx_pcibase);
+	} else if (ha->reg)
+		iounmap(ha->reg);
+	pci_release_regions(ha->pdev);
+}
+
+/**
+ * qla4xxx_mem_alloc - allocates memory for use by adapter.
+ * @ha: Pointer to host adapter structure
+ *
+ * Allocates DMA memory for request and response queues. Also allocates memory
+ * for srbs.
+ **/
+static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
+{
+	unsigned long align;
+
+	/* Allocate contiguous block of DMA memory for queues. */
+	ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+			  (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
+			  sizeof(struct shadow_regs) +
+			  MEM_ALIGN_VALUE +
+			  (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+	ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
+					&ha->queues_dma, GFP_KERNEL);
+	if (ha->queues == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Memory Allocation failed - queues.\n");
+
+		goto mem_alloc_error_exit;
+	}
+	memset(ha->queues, 0, ha->queues_len);
+
+	/*
+	 * As per RISC alignment requirements -- the bus-address must be a
+	 * multiple of the request-ring size (in bytes).
+	 */
+	align = 0;
+	if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
+		align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
+					   (MEM_ALIGN_VALUE - 1));
+
+	/* Update request and response queue pointers. */
+	ha->request_dma = ha->queues_dma + align;
+	ha->request_ring = (struct queue_entry *) (ha->queues + align);
+	ha->response_dma = ha->queues_dma + align +
+		(REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
+	ha->response_ring = (struct queue_entry *) (ha->queues + align +
+						    (REQUEST_QUEUE_DEPTH *
+						     QUEUE_SIZE));
+	ha->shadow_regs_dma = ha->queues_dma + align +
+		(REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+		(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
+	ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
+						  (REQUEST_QUEUE_DEPTH *
+						   QUEUE_SIZE) +
+						  (RESPONSE_QUEUE_DEPTH *
+						   QUEUE_SIZE));
+
+	/* Allocate memory for srb pool. */
+	ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
+					 mempool_free_slab, srb_cachep);
+	if (ha->srb_mempool == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Memory Allocation failed - SRB Pool.\n");
+
+		goto mem_alloc_error_exit;
+	}
+
+	ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
+					    CHAP_DMA_BLOCK_SIZE, 8, 0);
+
+	if (ha->chap_dma_pool == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+		    "%s: chap_dma_pool allocation failed..\n", __func__);
+		goto mem_alloc_error_exit;
+	}
+
+	ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
+					      DDB_DMA_BLOCK_SIZE, 8, 0);
+
+	if (ha->fw_ddb_dma_pool == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+			   "%s: fw_ddb_dma_pool allocation failed..\n",
+			   __func__);
+		goto mem_alloc_error_exit;
+	}
+
+	return QLA_SUCCESS;
+
+mem_alloc_error_exit:
+	qla4xxx_mem_free(ha);
+	return QLA_ERROR;
+}
+
+/**
+ * qla4_8xxx_check_temp - Check the ISP82XX temperature.
+ * @ha: adapter block pointer.
+ *
+ * Note: The caller should not hold the idc lock.
+ **/
+static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
+{
+	uint32_t temp, temp_state, temp_val;
+	int status = QLA_SUCCESS;
+
+	temp = qla4_8xxx_rd_32(ha, CRB_TEMP_STATE);
+
+	temp_state = qla82xx_get_temp_state(temp);
+	temp_val = qla82xx_get_temp_val(temp);
+
+	if (temp_state == QLA82XX_TEMP_PANIC) {
+		ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
+			   " exceeds maximum allowed. Hardware has been shut"
+			   " down.\n", temp_val);
+		status = QLA_ERROR;
+	} else if (temp_state == QLA82XX_TEMP_WARN) {
+		if (ha->temperature == QLA82XX_TEMP_NORMAL)
+			ql4_printk(KERN_WARNING, ha, "Device temperature %d"
+				   " degrees C exceeds operating range."
+				   " Immediate action needed.\n", temp_val);
+	} else {
+		if (ha->temperature == QLA82XX_TEMP_WARN)
+			ql4_printk(KERN_INFO, ha, "Device temperature is"
+				   " now %d degrees C in normal range.\n",
+				   temp_val);
+	}
+	ha->temperature = temp_state;
+	return status;
+}
+
+/**
+ * qla4_8xxx_check_fw_alive  - Check firmware health
+ * @ha: Pointer to host adapter structure.
+ *
+ * Context: Interrupt
+ **/
+static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
+{
+	uint32_t fw_heartbeat_counter;
+	int status = QLA_SUCCESS;
+
+	fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
+	/* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
+	if (fw_heartbeat_counter == 0xffffffff) {
+		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
+		    "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
+		    ha->host_no, __func__));
+		return status;
+	}
+
+	if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
+		ha->seconds_since_last_heartbeat++;
+		/* FW not alive after 2 seconds */
+		if (ha->seconds_since_last_heartbeat == 2) {
+			ha->seconds_since_last_heartbeat = 0;
+
+			ql4_printk(KERN_INFO, ha,
+				   "scsi(%ld): %s, Dumping hw/fw registers:\n "
+				   " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
+				   " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
+				   " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
+				   " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
+				   ha->host_no, __func__,
+				   qla4_8xxx_rd_32(ha,
+						   QLA82XX_PEG_HALT_STATUS1),
+				   qla4_8xxx_rd_32(ha,
+						   QLA82XX_PEG_HALT_STATUS2),
+				   qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
+						   0x3c),
+				   qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
+						   0x3c),
+				   qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
+						   0x3c),
+				   qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
+						   0x3c),
+				   qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
+						   0x3c));
+			status = QLA_ERROR;
+		}
+	} else
+		ha->seconds_since_last_heartbeat = 0;
+
+	ha->fw_heartbeat_counter = fw_heartbeat_counter;
+	return status;
+}
+
+/**
+ * qla4_8xxx_watchdog - Poll dev state
+ * @ha: Pointer to host adapter structure.
+ *
+ * Context: Interrupt
+ **/
+void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
+{
+	uint32_t dev_state, halt_status;
+
+	/* don't poll if reset is going on */
+	if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
+	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+	    test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
+		dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
+
+		if (qla4_8xxx_check_temp(ha)) {
+			ql4_printk(KERN_INFO, ha, "disabling pause"
+				   " transmit on port 0 & 1.\n");
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+					CRB_NIU_XG_PAUSE_CTL_P0 |
+					CRB_NIU_XG_PAUSE_CTL_P1);
+			set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
+			qla4xxx_wake_dpc(ha);
+		} else if (dev_state == QLA82XX_DEV_NEED_RESET &&
+		    !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
+			if (!ql4xdontresethba) {
+				ql4_printk(KERN_INFO, ha, "%s: HW State: "
+				    "NEED RESET!\n", __func__);
+				set_bit(DPC_RESET_HA, &ha->dpc_flags);
+				qla4xxx_wake_dpc(ha);
+			}
+		} else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
+		    !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
+			ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
+			    __func__);
+			set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
+			qla4xxx_wake_dpc(ha);
+		} else  {
+			/* Check firmware health */
+			if (qla4_8xxx_check_fw_alive(ha)) {
+				ql4_printk(KERN_INFO, ha, "disabling pause"
+					   " transmit on port 0 & 1.\n");
+				qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+						CRB_NIU_XG_PAUSE_CTL_P0 |
+						CRB_NIU_XG_PAUSE_CTL_P1);
+				halt_status = qla4_8xxx_rd_32(ha,
+						QLA82XX_PEG_HALT_STATUS1);
+
+				if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
+					ql4_printk(KERN_ERR, ha, "%s:"
+						   " Firmware aborted with"
+						   " error code 0x00006700."
+						   " Device is being reset\n",
+						   __func__);
+
+				/* Since we cannot change dev_state in interrupt
+				 * context, set appropriate DPC flag then wakeup
+				 * DPC */
+				if (halt_status & HALT_STATUS_UNRECOVERABLE)
+					set_bit(DPC_HA_UNRECOVERABLE,
+						&ha->dpc_flags);
+				else {
+					ql4_printk(KERN_INFO, ha, "%s: detect "
+						   "abort needed!\n", __func__);
+					set_bit(DPC_RESET_HA, &ha->dpc_flags);
+				}
+				qla4xxx_mailbox_premature_completion(ha);
+				qla4xxx_wake_dpc(ha);
+			}
+		}
+	}
+}
+
+static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	if (!(ddb_entry->ddb_type == FLASH_DDB))
+		return;
+
+	if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+	    !iscsi_is_session_online(cls_sess)) {
+		if (atomic_read(&ddb_entry->retry_relogin_timer) !=
+		    INVALID_ENTRY) {
+			if (atomic_read(&ddb_entry->retry_relogin_timer) ==
+					0) {
+				atomic_set(&ddb_entry->retry_relogin_timer,
+					   INVALID_ENTRY);
+				set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
+				set_bit(DF_RELOGIN, &ddb_entry->flags);
+				DEBUG2(ql4_printk(KERN_INFO, ha,
+				       "%s: index [%d] login device\n",
+					__func__, ddb_entry->fw_ddb_index));
+			} else
+				atomic_dec(&ddb_entry->retry_relogin_timer);
+		}
+	}
+
+	/* Wait for relogin to timeout */
+	if (atomic_read(&ddb_entry->relogin_timer) &&
+	    (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
+		/*
+		 * If the relogin times out and the device is
+		 * still NOT ONLINE then try and relogin again.
+		 */
+		if (!iscsi_is_session_online(cls_sess)) {
+			/* Reset retry relogin timer */
+			atomic_inc(&ddb_entry->relogin_retry_count);
+			DEBUG2(ql4_printk(KERN_INFO, ha,
+				"%s: index[%d] relogin timed out-retrying"
+				" relogin (%d), retry (%d)\n", __func__,
+				ddb_entry->fw_ddb_index,
+				atomic_read(&ddb_entry->relogin_retry_count),
+				ddb_entry->default_time2wait + 4));
+			set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
+			atomic_set(&ddb_entry->retry_relogin_timer,
+				   ddb_entry->default_time2wait + 4);
+		}
+	}
+}
+
+/**
+ * qla4xxx_timer - checks every second for work to do.
+ * @ha: Pointer to host adapter structure.
+ **/
+static void qla4xxx_timer(struct scsi_qla_host *ha)
+{
+	int start_dpc = 0;
+	uint16_t w;
+
+	iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
+
+	/* If we are in the middle of AER/EEH processing
+	 * skip any processing and reschedule the timer
+	 */
+	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
+		mod_timer(&ha->timer, jiffies + HZ);
+		return;
+	}
+
+	/* Hardware read to trigger an EEH error during mailbox waits. */
+	if (!pci_channel_offline(ha->pdev))
+		pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
+
+	if (is_qla8022(ha)) {
+		qla4_8xxx_watchdog(ha);
+	}
+
+	if (!is_qla8022(ha)) {
+		/* Check for heartbeat interval. */
+		if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
+		    ha->heartbeat_interval != 0) {
+			ha->seconds_since_last_heartbeat++;
+			if (ha->seconds_since_last_heartbeat >
+			    ha->heartbeat_interval + 2)
+				set_bit(DPC_RESET_HA, &ha->dpc_flags);
+		}
+	}
+
+	/* Process any deferred work. */
+	if (!list_empty(&ha->work_list))
+		start_dpc++;
+
+	/* Wakeup the dpc routine for this adapter, if needed. */
+	if (start_dpc ||
+	     test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+	     test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
+	     test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
+	     test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
+	     test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+	     test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
+	     test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
+	     test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
+	     test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
+	     test_bit(DPC_AEN, &ha->dpc_flags)) {
+		DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
+			      " - dpc flags = 0x%lx\n",
+			      ha->host_no, __func__, ha->dpc_flags));
+		qla4xxx_wake_dpc(ha);
+	}
+
+	/* Reschedule timer thread to call us back in one second */
+	mod_timer(&ha->timer, jiffies + HZ);
+
+	DEBUG2(ha->seconds_since_last_intr++);
+}
+
+/**
+ * qla4xxx_cmd_wait - waits for all outstanding commands to complete
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine stalls the driver until all outstanding commands are returned.
+ * Caller must release the Hardware Lock prior to calling this routine.
+ **/
+static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
+{
+	uint32_t index = 0;
+	unsigned long flags;
+	struct scsi_cmnd *cmd;
+
+	unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
+	    "complete\n", WAIT_CMD_TOV));
+
+	while (!time_after_eq(jiffies, wtime)) {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		/* Find a command that hasn't completed. */
+		for (index = 0; index < ha->host->can_queue; index++) {
+			cmd = scsi_host_find_tag(ha->host, index);
+			/*
+			 * We cannot just check if the index is valid,
+			 * becase if we are run from the scsi eh, then
+			 * the scsi/block layer is going to prevent
+			 * the tag from being released.
+			 */
+			if (cmd != NULL && CMD_SP(cmd))
+				break;
+		}
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		/* If No Commands are pending, wait is complete */
+		if (index == ha->host->can_queue)
+			return QLA_SUCCESS;
+
+		msleep(1000);
+	}
+	/* If we timed out on waiting for commands to come back
+	 * return ERROR. */
+	return QLA_ERROR;
+}
+
+int qla4xxx_hw_reset(struct scsi_qla_host *ha)
+{
+	uint32_t ctrl_status;
+	unsigned long flags = 0;
+
+	DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
+
+	if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
+		return QLA_ERROR;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	/*
+	 * If the SCSI Reset Interrupt bit is set, clear it.
+	 * Otherwise, the Soft Reset won't work.
+	 */
+	ctrl_status = readw(&ha->reg->ctrl_status);
+	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
+		writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
+
+	/* Issue Soft Reset */
+	writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
+	readl(&ha->reg->ctrl_status);
+
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_soft_reset - performs soft reset.
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4xxx_soft_reset(struct scsi_qla_host *ha)
+{
+	uint32_t max_wait_time;
+	unsigned long flags = 0;
+	int status;
+	uint32_t ctrl_status;
+
+	status = qla4xxx_hw_reset(ha);
+	if (status != QLA_SUCCESS)
+		return status;
+
+	status = QLA_ERROR;
+	/* Wait until the Network Reset Intr bit is cleared */
+	max_wait_time = RESET_INTR_TOV;
+	do {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		ctrl_status = readw(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
+			break;
+
+		msleep(1000);
+	} while ((--max_wait_time));
+
+	if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
+		DEBUG2(printk(KERN_WARNING
+			      "scsi%ld: Network Reset Intr not cleared by "
+			      "Network function, clearing it now!\n",
+			      ha->host_no));
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
+		readl(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	}
+
+	/* Wait until the firmware tells us the Soft Reset is done */
+	max_wait_time = SOFT_RESET_TOV;
+	do {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		ctrl_status = readw(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		if ((ctrl_status & CSR_SOFT_RESET) == 0) {
+			status = QLA_SUCCESS;
+			break;
+		}
+
+		msleep(1000);
+	} while ((--max_wait_time));
+
+	/*
+	 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
+	 * after the soft reset has taken place.
+	 */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	ctrl_status = readw(&ha->reg->ctrl_status);
+	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
+		writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
+		readl(&ha->reg->ctrl_status);
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	/* If soft reset fails then most probably the bios on other
+	 * function is also enabled.
+	 * Since the initialization is sequential the other fn
+	 * wont be able to acknowledge the soft reset.
+	 * Issue a force soft reset to workaround this scenario.
+	 */
+	if (max_wait_time == 0) {
+		/* Issue Force Soft Reset */
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
+		readl(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		/* Wait until the firmware tells us the Soft Reset is done */
+		max_wait_time = SOFT_RESET_TOV;
+		do {
+			spin_lock_irqsave(&ha->hardware_lock, flags);
+			ctrl_status = readw(&ha->reg->ctrl_status);
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+			if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
+				status = QLA_SUCCESS;
+				break;
+			}
+
+			msleep(1000);
+		} while ((--max_wait_time));
+	}
+
+	return status;
+}
+
+/**
+ * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
+ * @ha: Pointer to host adapter structure.
+ * @res: returned scsi status
+ *
+ * This routine is called just prior to a HARD RESET to return all
+ * outstanding commands back to the Operating System.
+ * Caller should make sure that the following locks are released
+ * before this calling routine: Hardware lock, and io_request_lock.
+ **/
+static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
+{
+	struct srb *srb;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	for (i = 0; i < ha->host->can_queue; i++) {
+		srb = qla4xxx_del_from_active_array(ha, i);
+		if (srb != NULL) {
+			srb->cmd->result = res;
+			kref_put(&srb->srb_ref, qla4xxx_srb_compl);
+		}
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
+{
+	clear_bit(AF_ONLINE, &ha->flags);
+
+	/* Disable the board */
+	ql4_printk(KERN_INFO, ha, "Disabling the board\n");
+
+	qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
+	qla4xxx_mark_all_devices_missing(ha);
+	clear_bit(AF_INIT_DONE, &ha->flags);
+}
+
+static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+
+	sess = cls_session->dd_data;
+	ddb_entry = sess->dd_data;
+	ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
+
+	if (ddb_entry->ddb_type == FLASH_DDB)
+		iscsi_block_session(ddb_entry->sess);
+	else
+		iscsi_session_failure(cls_session->dd_data,
+				      ISCSI_ERR_CONN_FAILED);
+}
+
+/**
+ * qla4xxx_recover_adapter - recovers adapter after a fatal error
+ * @ha: Pointer to host adapter structure.
+ **/
+static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
+{
+	int status = QLA_ERROR;
+	uint8_t reset_chip = 0;
+	uint32_t dev_state;
+	unsigned long wait;
+
+	/* Stall incoming I/O until we are done */
+	scsi_block_requests(ha->host);
+	clear_bit(AF_ONLINE, &ha->flags);
+	clear_bit(AF_LINK_UP, &ha->flags);
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
+
+	set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
+
+	iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
+
+	if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
+		reset_chip = 1;
+
+	/* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
+	 * do not reset adapter, jump to initialize_adapter */
+	if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
+		status = QLA_SUCCESS;
+		goto recover_ha_init_adapter;
+	}
+
+	/* For the ISP-82xx adapter, issue a stop_firmware if invoked
+	 * from eh_host_reset or ioctl module */
+	if (is_qla8022(ha) && !reset_chip &&
+	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
+
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+		    "scsi%ld: %s - Performing stop_firmware...\n",
+		    ha->host_no, __func__));
+		status = ha->isp_ops->reset_firmware(ha);
+		if (status == QLA_SUCCESS) {
+			if (!test_bit(AF_FW_RECOVERY, &ha->flags))
+				qla4xxx_cmd_wait(ha);
+			ha->isp_ops->disable_intrs(ha);
+			qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+			qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
+		} else {
+			/* If the stop_firmware fails then
+			 * reset the entire chip */
+			reset_chip = 1;
+			clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
+			set_bit(DPC_RESET_HA, &ha->dpc_flags);
+		}
+	}
+
+	/* Issue full chip reset if recovering from a catastrophic error,
+	 * or if stop_firmware fails for ISP-82xx.
+	 * This is the default case for ISP-4xxx */
+	if (!is_qla8022(ha) || reset_chip) {
+		if (!is_qla8022(ha))
+			goto chip_reset;
+
+		/* Check if 82XX firmware is alive or not
+		 * We may have arrived here from NEED_RESET
+		 * detection only */
+		if (test_bit(AF_FW_RECOVERY, &ha->flags))
+			goto chip_reset;
+
+		wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
+		while (time_before(jiffies, wait)) {
+			if (qla4_8xxx_check_fw_alive(ha)) {
+				qla4xxx_mailbox_premature_completion(ha);
+				break;
+			}
+
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			schedule_timeout(HZ);
+		}
+
+		if (!test_bit(AF_FW_RECOVERY, &ha->flags))
+			qla4xxx_cmd_wait(ha);
+chip_reset:
+		qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+		qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+		    "scsi%ld: %s - Performing chip reset..\n",
+		    ha->host_no, __func__));
+		status = ha->isp_ops->reset_chip(ha);
+	}
+
+	/* Flush any pending ddb changed AENs */
+	qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+recover_ha_init_adapter:
+	/* Upon successful firmware/chip reset, re-initialize the adapter */
+	if (status == QLA_SUCCESS) {
+		/* For ISP-4xxx, force function 1 to always initialize
+		 * before function 3 to prevent both funcions from
+		 * stepping on top of the other */
+		if (!is_qla8022(ha) && (ha->mac_index == 3))
+			ssleep(6);
+
+		/* NOTE: AF_ONLINE flag set upon successful completion of
+		 *       qla4xxx_initialize_adapter */
+		status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
+	}
+
+	/* Retry failed adapter initialization, if necessary
+	 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
+	 * case to prevent ping-pong resets between functions */
+	if (!test_bit(AF_ONLINE, &ha->flags) &&
+	    !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
+		/* Adapter initialization failed, see if we can retry
+		 * resetting the ha.
+		 * Since we don't want to block the DPC for too long
+		 * with multiple resets in the same thread,
+		 * utilize DPC to retry */
+		if (is_qla8022(ha)) {
+			qla4_8xxx_idc_lock(ha);
+			dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
+			qla4_8xxx_idc_unlock(ha);
+			if (dev_state == QLA82XX_DEV_FAILED) {
+				ql4_printk(KERN_INFO, ha, "%s: don't retry "
+					   "recover adapter. H/W is in Failed "
+					   "state\n", __func__);
+				qla4xxx_dead_adapter_cleanup(ha);
+				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+				clear_bit(DPC_RESET_HA_FW_CONTEXT,
+						&ha->dpc_flags);
+				status = QLA_ERROR;
+
+				goto exit_recover;
+			}
+		}
+
+		if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
+			ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
+			DEBUG2(printk("scsi%ld: recover adapter - retrying "
+				      "(%d) more times\n", ha->host_no,
+				      ha->retry_reset_ha_cnt));
+			set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+			status = QLA_ERROR;
+		} else {
+			if (ha->retry_reset_ha_cnt > 0) {
+				/* Schedule another Reset HA--DPC will retry */
+				ha->retry_reset_ha_cnt--;
+				DEBUG2(printk("scsi%ld: recover adapter - "
+					      "retry remaining %d\n",
+					      ha->host_no,
+					      ha->retry_reset_ha_cnt));
+				status = QLA_ERROR;
+			}
+
+			if (ha->retry_reset_ha_cnt == 0) {
+				/* Recover adapter retries have been exhausted.
+				 * Adapter DEAD */
+				DEBUG2(printk("scsi%ld: recover adapter "
+					      "failed - board disabled\n",
+					      ha->host_no));
+				qla4xxx_dead_adapter_cleanup(ha);
+				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+				clear_bit(DPC_RESET_HA_FW_CONTEXT,
+					  &ha->dpc_flags);
+				status = QLA_ERROR;
+			}
+		}
+	} else {
+		clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+		clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
+		clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+	}
+
+exit_recover:
+	ha->adapter_error_count++;
+
+	if (test_bit(AF_ONLINE, &ha->flags))
+		ha->isp_ops->enable_intrs(ha);
+
+	scsi_unblock_requests(ha->host);
+
+	clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
+	DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
+	    status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
+
+	return status;
+}
+
+static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+
+	sess = cls_session->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+	if (!iscsi_is_session_online(cls_session)) {
+		if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
+				   " unblock session\n", ha->host_no, __func__,
+				   ddb_entry->fw_ddb_index);
+			iscsi_unblock_session(ddb_entry->sess);
+		} else {
+			/* Trigger relogin */
+			if (ddb_entry->ddb_type == FLASH_DDB) {
+				if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
+					qla4xxx_arm_relogin_timer(ddb_entry);
+			} else
+				iscsi_session_failure(cls_session->dd_data,
+						      ISCSI_ERR_CONN_FAILED);
+		}
+	}
+}
+
+int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+
+	sess = cls_session->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
+		   " unblock session\n", ha->host_no, __func__,
+		   ddb_entry->fw_ddb_index);
+
+	iscsi_unblock_session(ddb_entry->sess);
+
+	/* Start scan target */
+	if (test_bit(AF_ONLINE, &ha->flags)) {
+		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
+			   " start scan\n", ha->host_no, __func__,
+			   ddb_entry->fw_ddb_index);
+		scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
+	}
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+
+	sess = cls_session->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
+		   " unblock user space session\n", ha->host_no, __func__,
+		   ddb_entry->fw_ddb_index);
+	iscsi_conn_start(ddb_entry->conn);
+	iscsi_conn_login_event(ddb_entry->conn,
+			       ISCSI_CONN_STATE_LOGGED_IN);
+
+	return QLA_SUCCESS;
+}
+
+static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
+{
+	iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
+}
+
+static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
+{
+	uint16_t relogin_timer;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	relogin_timer = max(ddb_entry->default_relogin_timeout,
+			    (uint16_t)RELOGIN_TOV);
+	atomic_set(&ddb_entry->relogin_timer, relogin_timer);
+
+	DEBUG2(ql4_printk(KERN_INFO, ha,
+			  "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
+			  ddb_entry->fw_ddb_index, relogin_timer));
+
+	qla4xxx_login_flash_ddb(cls_sess);
+}
+
+static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
+{
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb_entry;
+	struct scsi_qla_host *ha;
+
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ha = ddb_entry->ha;
+
+	if (!(ddb_entry->ddb_type == FLASH_DDB))
+		return;
+
+	if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
+	    !iscsi_is_session_online(cls_sess)) {
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "relogin issued\n"));
+		qla4xxx_relogin_flash_ddb(cls_sess);
+	}
+}
+
+void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
+{
+	if (ha->dpc_thread)
+		queue_work(ha->dpc_thread, &ha->dpc_work);
+}
+
+static struct qla4_work_evt *
+qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
+		   enum qla4_work_type type)
+{
+	struct qla4_work_evt *e;
+	uint32_t size = sizeof(struct qla4_work_evt) + data_size;
+
+	e = kzalloc(size, GFP_ATOMIC);
+	if (!e)
+		return NULL;
+
+	INIT_LIST_HEAD(&e->list);
+	e->type = type;
+	return e;
+}
+
+static void qla4xxx_post_work(struct scsi_qla_host *ha,
+			     struct qla4_work_evt *e)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&ha->work_lock, flags);
+	list_add_tail(&e->list, &ha->work_list);
+	spin_unlock_irqrestore(&ha->work_lock, flags);
+	qla4xxx_wake_dpc(ha);
+}
+
+int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
+			  enum iscsi_host_event_code aen_code,
+			  uint32_t data_size, uint8_t *data)
+{
+	struct qla4_work_evt *e;
+
+	e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
+	if (!e)
+		return QLA_ERROR;
+
+	e->u.aen.code = aen_code;
+	e->u.aen.data_size = data_size;
+	memcpy(e->u.aen.data, data, data_size);
+
+	qla4xxx_post_work(ha, e);
+
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
+			       uint32_t status, uint32_t pid,
+			       uint32_t data_size, uint8_t *data)
+{
+	struct qla4_work_evt *e;
+
+	e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
+	if (!e)
+		return QLA_ERROR;
+
+	e->u.ping.status = status;
+	e->u.ping.pid = pid;
+	e->u.ping.data_size = data_size;
+	memcpy(e->u.ping.data, data, data_size);
+
+	qla4xxx_post_work(ha, e);
+
+	return QLA_SUCCESS;
+}
+
+static void qla4xxx_do_work(struct scsi_qla_host *ha)
+{
+	struct qla4_work_evt *e, *tmp;
+	unsigned long flags;
+	LIST_HEAD(work);
+
+	spin_lock_irqsave(&ha->work_lock, flags);
+	list_splice_init(&ha->work_list, &work);
+	spin_unlock_irqrestore(&ha->work_lock, flags);
+
+	list_for_each_entry_safe(e, tmp, &work, list) {
+		list_del_init(&e->list);
+
+		switch (e->type) {
+		case QLA4_EVENT_AEN:
+			iscsi_post_host_event(ha->host_no,
+					      &qla4xxx_iscsi_transport,
+					      e->u.aen.code,
+					      e->u.aen.data_size,
+					      e->u.aen.data);
+			break;
+		case QLA4_EVENT_PING_STATUS:
+			iscsi_ping_comp_event(ha->host_no,
+					      &qla4xxx_iscsi_transport,
+					      e->u.ping.status,
+					      e->u.ping.pid,
+					      e->u.ping.data_size,
+					      e->u.ping.data);
+			break;
+		default:
+			ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
+				   "supported", e->type);
+		}
+		kfree(e);
+	}
+}
+
+/**
+ * qla4xxx_do_dpc - dpc routine
+ * @data: in our case pointer to adapter structure
+ *
+ * This routine is a task that is schedule by the interrupt handler
+ * to perform the background processing for interrupts.  We put it
+ * on a task queue that is consumed whenever the scheduler runs; that's
+ * so you can do anything (i.e. put the process to sleep etc).  In fact,
+ * the mid-level tries to sleep when it reaches the driver threshold
+ * "host->can_queue". This can cause a panic if we were in our interrupt code.
+ **/
+static void qla4xxx_do_dpc(struct work_struct *work)
+{
+	struct scsi_qla_host *ha =
+		container_of(work, struct scsi_qla_host, dpc_work);
+	int status = QLA_ERROR;
+
+	DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
+	    "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
+	    ha->host_no, __func__, ha->flags, ha->dpc_flags))
+
+	/* Initialization not yet finished. Don't do anything yet. */
+	if (!test_bit(AF_INIT_DONE, &ha->flags))
+		return;
+
+	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
+		DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
+		    ha->host_no, __func__, ha->flags));
+		return;
+	}
+
+	/* post events to application */
+	qla4xxx_do_work(ha);
+
+	if (is_qla8022(ha)) {
+		if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
+			qla4_8xxx_idc_lock(ha);
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+			    QLA82XX_DEV_FAILED);
+			qla4_8xxx_idc_unlock(ha);
+			ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
+			qla4_8xxx_device_state_handler(ha);
+		}
+		if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
+			qla4_8xxx_need_qsnt_handler(ha);
+		}
+	}
+
+	if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
+	    (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+	    test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
+		if (ql4xdontresethba) {
+			DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
+			    ha->host_no, __func__));
+			clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+			clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
+			clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
+			goto dpc_post_reset_ha;
+		}
+		if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
+		    test_bit(DPC_RESET_HA, &ha->dpc_flags))
+			qla4xxx_recover_adapter(ha);
+
+		if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
+			uint8_t wait_time = RESET_INTR_TOV;
+
+			while ((readw(&ha->reg->ctrl_status) &
+				(CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
+				if (--wait_time == 0)
+					break;
+				msleep(1000);
+			}
+			if (wait_time == 0)
+				DEBUG2(printk("scsi%ld: %s: SR|FSR "
+					      "bit not cleared-- resetting\n",
+					      ha->host_no, __func__));
+			qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
+			if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
+				qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+				status = qla4xxx_recover_adapter(ha);
+			}
+			clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
+			if (status == QLA_SUCCESS)
+				ha->isp_ops->enable_intrs(ha);
+		}
+	}
+
+dpc_post_reset_ha:
+	/* ---- process AEN? --- */
+	if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+		qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+	/* ---- Get DHCP IP Address? --- */
+	if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+		qla4xxx_get_dhcp_ip_address(ha);
+
+	/* ---- relogin device? --- */
+	if (adapter_up(ha) &&
+	    test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
+		iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
+	}
+
+	/* ---- link change? --- */
+	if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
+		if (!test_bit(AF_LINK_UP, &ha->flags)) {
+			/* ---- link down? --- */
+			qla4xxx_mark_all_devices_missing(ha);
+		} else {
+			/* ---- link up? --- *
+			 * F/W will auto login to all devices ONLY ONCE after
+			 * link up during driver initialization and runtime
+			 * fatal error recovery.  Therefore, the driver must
+			 * manually relogin to devices when recovering from
+			 * connection failures, logouts, expired KATO, etc. */
+			if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
+				qla4xxx_build_ddb_list(ha, ha->is_reset);
+				iscsi_host_for_each_session(ha->host,
+						qla4xxx_login_flash_ddb);
+			} else
+				qla4xxx_relogin_all_devices(ha);
+		}
+	}
+}
+
+/**
+ * qla4xxx_free_adapter - release the adapter
+ * @ha: pointer to adapter structure
+ **/
+static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
+{
+	qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
+
+	if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
+		/* Turn-off interrupts on the card. */
+		ha->isp_ops->disable_intrs(ha);
+	}
+
+	/* Remove timer thread, if present */
+	if (ha->timer_active)
+		qla4xxx_stop_timer(ha);
+
+	/* Kill the kernel thread for this host */
+	if (ha->dpc_thread)
+		destroy_workqueue(ha->dpc_thread);
+
+	/* Kill the kernel thread for this host */
+	if (ha->task_wq)
+		destroy_workqueue(ha->task_wq);
+
+	/* Put firmware in known state */
+	ha->isp_ops->reset_firmware(ha);
+
+	if (is_qla8022(ha)) {
+		qla4_8xxx_idc_lock(ha);
+		qla4_8xxx_clear_drv_active(ha);
+		qla4_8xxx_idc_unlock(ha);
+	}
+
+	/* Detach interrupts */
+	if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
+		qla4xxx_free_irqs(ha);
+
+	/* free extra memory */
+	qla4xxx_mem_free(ha);
+}
+
+int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
+{
+	int status = 0;
+	unsigned long mem_base, mem_len, db_base, db_len;
+	struct pci_dev *pdev = ha->pdev;
+
+	status = pci_request_regions(pdev, DRIVER_NAME);
+	if (status) {
+		printk(KERN_WARNING
+		    "scsi(%ld) Failed to reserve PIO regions (%s) "
+		    "status=%d\n", ha->host_no, pci_name(pdev), status);
+		goto iospace_error_exit;
+	}
+
+	DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
+	    __func__, pdev->revision));
+	ha->revision_id = pdev->revision;
+
+	/* remap phys address */
+	mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
+	mem_len = pci_resource_len(pdev, 0);
+	DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
+	    __func__, mem_base, mem_len));
+
+	/* mapping of pcibase pointer */
+	ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
+	if (!ha->nx_pcibase) {
+		printk(KERN_ERR
+		    "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
+		pci_release_regions(ha->pdev);
+		goto iospace_error_exit;
+	}
+
+	/* Mapping of IO base pointer, door bell read and write pointer */
+
+	/* mapping of IO base pointer */
+	ha->qla4_8xxx_reg =
+	    (struct device_reg_82xx  __iomem *)((uint8_t *)ha->nx_pcibase +
+	    0xbc000 + (ha->pdev->devfn << 11));
+
+	db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
+	db_len = pci_resource_len(pdev, 4);
+
+	ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
+	    QLA82XX_CAM_RAM_DB2);
+
+	return 0;
+iospace_error_exit:
+	return -ENOMEM;
+}
+
+/***
+ * qla4xxx_iospace_config - maps registers
+ * @ha: pointer to adapter structure
+ *
+ * This routines maps HBA's registers from the pci address space
+ * into the kernel virtual address space for memory mapped i/o.
+ **/
+int qla4xxx_iospace_config(struct scsi_qla_host *ha)
+{
+	unsigned long pio, pio_len, pio_flags;
+	unsigned long mmio, mmio_len, mmio_flags;
+
+	pio = pci_resource_start(ha->pdev, 0);
+	pio_len = pci_resource_len(ha->pdev, 0);
+	pio_flags = pci_resource_flags(ha->pdev, 0);
+	if (pio_flags & IORESOURCE_IO) {
+		if (pio_len < MIN_IOBASE_LEN) {
+			ql4_printk(KERN_WARNING, ha,
+				"Invalid PCI I/O region size\n");
+			pio = 0;
+		}
+	} else {
+		ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
+		pio = 0;
+	}
+
+	/* Use MMIO operations for all accesses. */
+	mmio = pci_resource_start(ha->pdev, 1);
+	mmio_len = pci_resource_len(ha->pdev, 1);
+	mmio_flags = pci_resource_flags(ha->pdev, 1);
+
+	if (!(mmio_flags & IORESOURCE_MEM)) {
+		ql4_printk(KERN_ERR, ha,
+		    "region #0 not an MMIO resource, aborting\n");
+
+		goto iospace_error_exit;
+	}
+
+	if (mmio_len < MIN_IOBASE_LEN) {
+		ql4_printk(KERN_ERR, ha,
+		    "Invalid PCI mem region size, aborting\n");
+		goto iospace_error_exit;
+	}
+
+	if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Failed to reserve PIO/MMIO regions\n");
+
+		goto iospace_error_exit;
+	}
+
+	ha->pio_address = pio;
+	ha->pio_length = pio_len;
+	ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
+	if (!ha->reg) {
+		ql4_printk(KERN_ERR, ha,
+		    "cannot remap MMIO, aborting\n");
+
+		goto iospace_error_exit;
+	}
+
+	return 0;
+
+iospace_error_exit:
+	return -ENOMEM;
+}
+
+static struct isp_operations qla4xxx_isp_ops = {
+	.iospace_config         = qla4xxx_iospace_config,
+	.pci_config             = qla4xxx_pci_config,
+	.disable_intrs          = qla4xxx_disable_intrs,
+	.enable_intrs           = qla4xxx_enable_intrs,
+	.start_firmware         = qla4xxx_start_firmware,
+	.intr_handler           = qla4xxx_intr_handler,
+	.interrupt_service_routine = qla4xxx_interrupt_service_routine,
+	.reset_chip             = qla4xxx_soft_reset,
+	.reset_firmware         = qla4xxx_hw_reset,
+	.queue_iocb             = qla4xxx_queue_iocb,
+	.complete_iocb          = qla4xxx_complete_iocb,
+	.rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
+	.rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
+	.get_sys_info           = qla4xxx_get_sys_info,
+};
+
+static struct isp_operations qla4_8xxx_isp_ops = {
+	.iospace_config         = qla4_8xxx_iospace_config,
+	.pci_config             = qla4_8xxx_pci_config,
+	.disable_intrs          = qla4_8xxx_disable_intrs,
+	.enable_intrs           = qla4_8xxx_enable_intrs,
+	.start_firmware         = qla4_8xxx_load_risc,
+	.intr_handler           = qla4_8xxx_intr_handler,
+	.interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
+	.reset_chip             = qla4_8xxx_isp_reset,
+	.reset_firmware         = qla4_8xxx_stop_firmware,
+	.queue_iocb             = qla4_8xxx_queue_iocb,
+	.complete_iocb          = qla4_8xxx_complete_iocb,
+	.rd_shdw_req_q_out      = qla4_8xxx_rd_shdw_req_q_out,
+	.rd_shdw_rsp_q_in       = qla4_8xxx_rd_shdw_rsp_q_in,
+	.get_sys_info           = qla4_8xxx_get_sys_info,
+};
+
+uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
+{
+	return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
+}
+
+uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
+{
+	return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
+}
+
+uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
+{
+	return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
+}
+
+uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
+{
+	return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
+}
+
+static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
+{
+	struct scsi_qla_host *ha = data;
+	char *str = buf;
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_ETH_FLAGS:
+		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
+		break;
+	case ISCSI_BOOT_ETH_INDEX:
+		rc = sprintf(str, "0\n");
+		break;
+	case ISCSI_BOOT_ETH_MAC:
+		rc = sysfs_format_mac(str, ha->my_mac,
+				      MAC_ADDR_LEN);
+		break;
+	default:
+		rc = -ENOSYS;
+		break;
+	}
+	return rc;
+}
+
+static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
+{
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_ETH_FLAGS:
+	case ISCSI_BOOT_ETH_MAC:
+	case ISCSI_BOOT_ETH_INDEX:
+		rc = S_IRUGO;
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
+{
+	struct scsi_qla_host *ha = data;
+	char *str = buf;
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_INI_INITIATOR_NAME:
+		rc = sprintf(str, "%s\n", ha->name_string);
+		break;
+	default:
+		rc = -ENOSYS;
+		break;
+	}
+	return rc;
+}
+
+static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
+{
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_INI_INITIATOR_NAME:
+		rc = S_IRUGO;
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static ssize_t
+qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
+			   char *buf)
+{
+	struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
+	char *str = buf;
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_TGT_NAME:
+		rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
+		break;
+	case ISCSI_BOOT_TGT_IP_ADDR:
+		if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
+			rc = sprintf(buf, "%pI4\n",
+				     &boot_conn->dest_ipaddr.ip_address);
+		else
+			rc = sprintf(str, "%pI6\n",
+				     &boot_conn->dest_ipaddr.ip_address);
+		break;
+	case ISCSI_BOOT_TGT_PORT:
+			rc = sprintf(str, "%d\n", boot_conn->dest_port);
+		break;
+	case ISCSI_BOOT_TGT_CHAP_NAME:
+		rc = sprintf(str,  "%.*s\n",
+			     boot_conn->chap.target_chap_name_length,
+			     (char *)&boot_conn->chap.target_chap_name);
+		break;
+	case ISCSI_BOOT_TGT_CHAP_SECRET:
+		rc = sprintf(str,  "%.*s\n",
+			     boot_conn->chap.target_secret_length,
+			     (char *)&boot_conn->chap.target_secret);
+		break;
+	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
+		rc = sprintf(str,  "%.*s\n",
+			     boot_conn->chap.intr_chap_name_length,
+			     (char *)&boot_conn->chap.intr_chap_name);
+		break;
+	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
+		rc = sprintf(str,  "%.*s\n",
+			     boot_conn->chap.intr_secret_length,
+			     (char *)&boot_conn->chap.intr_secret);
+		break;
+	case ISCSI_BOOT_TGT_FLAGS:
+		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
+		break;
+	case ISCSI_BOOT_TGT_NIC_ASSOC:
+		rc = sprintf(str, "0\n");
+		break;
+	default:
+		rc = -ENOSYS;
+		break;
+	}
+	return rc;
+}
+
+static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
+{
+	struct scsi_qla_host *ha = data;
+	struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
+
+	return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
+}
+
+static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
+{
+	struct scsi_qla_host *ha = data;
+	struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
+
+	return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
+}
+
+static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
+{
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_TGT_NAME:
+	case ISCSI_BOOT_TGT_IP_ADDR:
+	case ISCSI_BOOT_TGT_PORT:
+	case ISCSI_BOOT_TGT_CHAP_NAME:
+	case ISCSI_BOOT_TGT_CHAP_SECRET:
+	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
+	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
+	case ISCSI_BOOT_TGT_NIC_ASSOC:
+	case ISCSI_BOOT_TGT_FLAGS:
+		rc = S_IRUGO;
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static void qla4xxx_boot_release(void *data)
+{
+	struct scsi_qla_host *ha = data;
+
+	scsi_host_put(ha->host);
+}
+
+static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
+{
+	dma_addr_t buf_dma;
+	uint32_t addr, pri_addr, sec_addr;
+	uint32_t offset;
+	uint16_t func_num;
+	uint8_t val;
+	uint8_t *buf = NULL;
+	size_t size = 13 * sizeof(uint8_t);
+	int ret = QLA_SUCCESS;
+
+	func_num = PCI_FUNC(ha->pdev->devfn);
+
+	ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
+		   __func__, ha->pdev->device, func_num);
+
+	if (is_qla40XX(ha)) {
+		if (func_num == 1) {
+			addr = NVRAM_PORT0_BOOT_MODE;
+			pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
+			sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
+		} else if (func_num == 3) {
+			addr = NVRAM_PORT1_BOOT_MODE;
+			pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
+			sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
+		} else {
+			ret = QLA_ERROR;
+			goto exit_boot_info;
+		}
+
+		/* Check Boot Mode */
+		val = rd_nvram_byte(ha, addr);
+		if (!(val & 0x07)) {
+			DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
+					  "options : 0x%x\n", __func__, val));
+			ret = QLA_ERROR;
+			goto exit_boot_info;
+		}
+
+		/* get primary valid target index */
+		val = rd_nvram_byte(ha, pri_addr);
+		if (val & BIT_7)
+			ddb_index[0] = (val & 0x7f);
+
+		/* get secondary valid target index */
+		val = rd_nvram_byte(ha, sec_addr);
+		if (val & BIT_7)
+			ddb_index[1] = (val & 0x7f);
+
+	} else if (is_qla8022(ha)) {
+		buf = dma_alloc_coherent(&ha->pdev->dev, size,
+					 &buf_dma, GFP_KERNEL);
+		if (!buf) {
+			DEBUG2(ql4_printk(KERN_ERR, ha,
+					  "%s: Unable to allocate dma buffer\n",
+					   __func__));
+			ret = QLA_ERROR;
+			goto exit_boot_info;
+		}
+
+		if (ha->port_num == 0)
+			offset = BOOT_PARAM_OFFSET_PORT0;
+		else if (ha->port_num == 1)
+			offset = BOOT_PARAM_OFFSET_PORT1;
+		else {
+			ret = QLA_ERROR;
+			goto exit_boot_info_free;
+		}
+		addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
+		       offset;
+		if (qla4xxx_get_flash(ha, buf_dma, addr,
+				      13 * sizeof(uint8_t)) != QLA_SUCCESS) {
+			DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
+					  " failed\n", ha->host_no, __func__));
+			ret = QLA_ERROR;
+			goto exit_boot_info_free;
+		}
+		/* Check Boot Mode */
+		if (!(buf[1] & 0x07)) {
+			DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
+					  " : 0x%x\n", buf[1]));
+			ret = QLA_ERROR;
+			goto exit_boot_info_free;
+		}
+
+		/* get primary valid target index */
+		if (buf[2] & BIT_7)
+			ddb_index[0] = buf[2] & 0x7f;
+
+		/* get secondary valid target index */
+		if (buf[11] & BIT_7)
+			ddb_index[1] = buf[11] & 0x7f;
+	} else {
+		ret = QLA_ERROR;
+		goto exit_boot_info;
+	}
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
+			  " target ID %d\n", __func__, ddb_index[0],
+			  ddb_index[1]));
+
+exit_boot_info_free:
+	dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
+exit_boot_info:
+	ha->pri_ddb_idx = ddb_index[0];
+	ha->sec_ddb_idx = ddb_index[1];
+	return ret;
+}
+
+/**
+ * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
+ * @ha: pointer to adapter structure
+ * @username: CHAP username to be returned
+ * @password: CHAP password to be returned
+ *
+ * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
+ * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
+ * So from the CHAP cache find the first BIDI CHAP entry and set it
+ * to the boot record in sysfs.
+ **/
+static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
+			    char *password)
+{
+	int i, ret = -EINVAL;
+	int max_chap_entries = 0;
+	struct ql4_chap_table *chap_table;
+
+	if (is_qla8022(ha))
+		max_chap_entries = (ha->hw.flt_chap_size / 2) /
+						sizeof(struct ql4_chap_table);
+	else
+		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
+
+	if (!ha->chap_list) {
+		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
+		return ret;
+	}
+
+	mutex_lock(&ha->chap_sem);
+	for (i = 0; i < max_chap_entries; i++) {
+		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
+		if (chap_table->cookie !=
+		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
+			continue;
+		}
+
+		if (chap_table->flags & BIT_7) /* local */
+			continue;
+
+		if (!(chap_table->flags & BIT_6)) /* Not BIDI */
+			continue;
+
+		strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
+		strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
+		ret = 0;
+		break;
+	}
+	mutex_unlock(&ha->chap_sem);
+
+	return ret;
+}
+
+
+static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
+				   struct ql4_boot_session_info *boot_sess,
+				   uint16_t ddb_index)
+{
+	struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
+	struct dev_db_entry *fw_ddb_entry;
+	dma_addr_t fw_ddb_entry_dma;
+	uint16_t idx;
+	uint16_t options;
+	int ret = QLA_SUCCESS;
+
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+					  &fw_ddb_entry_dma, GFP_KERNEL);
+	if (!fw_ddb_entry) {
+		DEBUG2(ql4_printk(KERN_ERR, ha,
+				  "%s: Unable to allocate dma buffer.\n",
+				  __func__));
+		ret = QLA_ERROR;
+		return ret;
+	}
+
+	if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
+				   fw_ddb_entry_dma, ddb_index)) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
+				  "index [%d]\n", __func__, ddb_index));
+		ret = QLA_ERROR;
+		goto exit_boot_target;
+	}
+
+	/* Update target name and IP from DDB */
+	memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
+	       min(sizeof(boot_sess->target_name),
+		   sizeof(fw_ddb_entry->iscsi_name)));
+
+	options = le16_to_cpu(fw_ddb_entry->options);
+	if (options & DDB_OPT_IPV6_DEVICE) {
+		memcpy(&boot_conn->dest_ipaddr.ip_address,
+		       &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
+	} else {
+		boot_conn->dest_ipaddr.ip_type = 0x1;
+		memcpy(&boot_conn->dest_ipaddr.ip_address,
+		       &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
+	}
+
+	boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
+
+	/* update chap information */
+	idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
+
+	if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))	{
+
+		DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
+
+		ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
+				       target_chap_name,
+				       (char *)&boot_conn->chap.target_secret,
+				       idx);
+		if (ret) {
+			ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
+			ret = QLA_ERROR;
+			goto exit_boot_target;
+		}
+
+		boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
+		boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
+	}
+
+	if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
+
+		DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
+
+		ret = qla4xxx_get_bidi_chap(ha,
+				    (char *)&boot_conn->chap.intr_chap_name,
+				    (char *)&boot_conn->chap.intr_secret);
+
+		if (ret) {
+			ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
+			ret = QLA_ERROR;
+			goto exit_boot_target;
+		}
+
+		boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
+		boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
+	}
+
+exit_boot_target:
+	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+			  fw_ddb_entry, fw_ddb_entry_dma);
+	return ret;
+}
+
+static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
+{
+	uint16_t ddb_index[2];
+	int ret = QLA_ERROR;
+	int rval;
+
+	memset(ddb_index, 0, sizeof(ddb_index));
+	ddb_index[0] = 0xffff;
+	ddb_index[1] = 0xffff;
+	ret = get_fw_boot_info(ha, ddb_index);
+	if (ret != QLA_SUCCESS) {
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				"%s: No boot target configured.\n", __func__));
+		return ret;
+	}
+
+	if (ql4xdisablesysfsboot)
+		return QLA_SUCCESS;
+
+	if (ddb_index[0] == 0xffff)
+		goto sec_target;
+
+	rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
+				      ddb_index[0]);
+	if (rval != QLA_SUCCESS) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
+				  "configured\n", __func__));
+	} else
+		ret = QLA_SUCCESS;
+
+sec_target:
+	if (ddb_index[1] == 0xffff)
+		goto exit_get_boot_info;
+
+	rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
+				      ddb_index[1]);
+	if (rval != QLA_SUCCESS) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
+				  " configured\n", __func__));
+	} else
+		ret = QLA_SUCCESS;
+
+exit_get_boot_info:
+	return ret;
+}
+
+static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
+{
+	struct iscsi_boot_kobj *boot_kobj;
+
+	if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
+		return QLA_ERROR;
+
+	if (ql4xdisablesysfsboot) {
+		ql4_printk(KERN_INFO, ha,
+			   "%s: syfsboot disabled - driver will trigger login "
+			   "and publish session for discovery .\n", __func__);
+		return QLA_SUCCESS;
+	}
+
+
+	ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
+	if (!ha->boot_kset)
+		goto kset_free;
+
+	if (!scsi_host_get(ha->host))
+		goto kset_free;
+	boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
+					     qla4xxx_show_boot_tgt_pri_info,
+					     qla4xxx_tgt_get_attr_visibility,
+					     qla4xxx_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	if (!scsi_host_get(ha->host))
+		goto kset_free;
+	boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
+					     qla4xxx_show_boot_tgt_sec_info,
+					     qla4xxx_tgt_get_attr_visibility,
+					     qla4xxx_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	if (!scsi_host_get(ha->host))
+		goto kset_free;
+	boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
+					       qla4xxx_show_boot_ini_info,
+					       qla4xxx_ini_get_attr_visibility,
+					       qla4xxx_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	if (!scsi_host_get(ha->host))
+		goto kset_free;
+	boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
+					       qla4xxx_show_boot_eth_info,
+					       qla4xxx_eth_get_attr_visibility,
+					       qla4xxx_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	return QLA_SUCCESS;
+
+put_host:
+	scsi_host_put(ha->host);
+kset_free:
+	iscsi_boot_destroy_kset(ha->boot_kset);
+	return -ENOMEM;
+}
+
+
+/**
+ * qla4xxx_create chap_list - Create CHAP list from FLASH
+ * @ha: pointer to adapter structure
+ *
+ * Read flash and make a list of CHAP entries, during login when a CHAP entry
+ * is received, it will be checked in this list. If entry exist then the CHAP
+ * entry index is set in the DDB. If CHAP entry does not exist in this list
+ * then a new entry is added in FLASH in CHAP table and the index obtained is
+ * used in the DDB.
+ **/
+static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
+{
+	int rval = 0;
+	uint8_t *chap_flash_data = NULL;
+	uint32_t offset;
+	dma_addr_t chap_dma;
+	uint32_t chap_size = 0;
+
+	if (is_qla40XX(ha))
+		chap_size = MAX_CHAP_ENTRIES_40XX  *
+					sizeof(struct ql4_chap_table);
+	else	/* Single region contains CHAP info for both
+		 * ports which is divided into half for each port.
+		 */
+		chap_size = ha->hw.flt_chap_size / 2;
+
+	chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
+					  &chap_dma, GFP_KERNEL);
+	if (!chap_flash_data) {
+		ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
+		return;
+	}
+	if (is_qla40XX(ha))
+		offset = FLASH_CHAP_OFFSET;
+	else {
+		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
+		if (ha->port_num == 1)
+			offset += chap_size;
+	}
+
+	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
+	if (rval != QLA_SUCCESS)
+		goto exit_chap_list;
+
+	if (ha->chap_list == NULL)
+		ha->chap_list = vmalloc(chap_size);
+	if (ha->chap_list == NULL) {
+		ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
+		goto exit_chap_list;
+	}
+
+	memcpy(ha->chap_list, chap_flash_data, chap_size);
+
+exit_chap_list:
+	dma_free_coherent(&ha->pdev->dev, chap_size,
+			chap_flash_data, chap_dma);
+}
+
+static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
+				  struct ql4_tuple_ddb *tddb)
+{
+	struct scsi_qla_host *ha;
+	struct iscsi_cls_session *cls_sess;
+	struct iscsi_cls_conn *cls_conn;
+	struct iscsi_session *sess;
+	struct iscsi_conn *conn;
+
+	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
+	ha = ddb_entry->ha;
+	cls_sess = ddb_entry->sess;
+	sess = cls_sess->dd_data;
+	cls_conn = ddb_entry->conn;
+	conn = cls_conn->dd_data;
+
+	tddb->tpgt = sess->tpgt;
+	tddb->port = conn->persistent_port;
+	strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
+	strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
+}
+
+static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
+				      struct ql4_tuple_ddb *tddb)
+{
+	uint16_t options = 0;
+
+	tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
+	memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
+	       min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
+
+	options = le16_to_cpu(fw_ddb_entry->options);
+	if (options & DDB_OPT_IPV6_DEVICE)
+		sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
+	else
+		sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
+
+	tddb->port = le16_to_cpu(fw_ddb_entry->port);
+	memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0], sizeof(tddb->isid));
+}
+
+static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
+				     struct ql4_tuple_ddb *old_tddb,
+				     struct ql4_tuple_ddb *new_tddb,
+				     uint8_t is_isid_compare)
+{
+	if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
+		return QLA_ERROR;
+
+	if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
+		return QLA_ERROR;
+
+	if (old_tddb->port != new_tddb->port)
+		return QLA_ERROR;
+
+	/* For multi sessions, driver generates the ISID, so do not compare
+	 * ISID in reset path since it would be a comparision between the
+	 * driver generated ISID and firmware generated ISID. This could
+	 * lead to adding duplicated DDBs in the list as driver generated
+	 * ISID would not match firmware generated ISID.
+	 */
+	if (is_isid_compare) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
+			"%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
+			__func__, old_tddb->isid[5], old_tddb->isid[4],
+			old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
+			old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
+			new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
+			new_tddb->isid[0]));
+
+		if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
+			   sizeof(old_tddb->isid)))
+			return QLA_ERROR;
+	}
+
+	DEBUG2(ql4_printk(KERN_INFO, ha,
+			  "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
+			  old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
+			  old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
+			  new_tddb->ip_addr, new_tddb->iscsi_name));
+
+	return QLA_SUCCESS;
+}
+
+static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
+				     struct dev_db_entry *fw_ddb_entry)
+{
+	struct ddb_entry *ddb_entry;
+	struct ql4_tuple_ddb *fw_tddb = NULL;
+	struct ql4_tuple_ddb *tmp_tddb = NULL;
+	int idx;
+	int ret = QLA_ERROR;
+
+	fw_tddb = vzalloc(sizeof(*fw_tddb));
+	if (!fw_tddb) {
+		DEBUG2(ql4_printk(KERN_WARNING, ha,
+				  "Memory Allocation failed.\n"));
+		ret = QLA_SUCCESS;
+		goto exit_check;
+	}
+
+	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
+	if (!tmp_tddb) {
+		DEBUG2(ql4_printk(KERN_WARNING, ha,
+				  "Memory Allocation failed.\n"));
+		ret = QLA_SUCCESS;
+		goto exit_check;
+	}
+
+	qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb);
+
+	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
+		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
+		if (ddb_entry == NULL)
+			continue;
+
+		qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
+		if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
+			ret = QLA_SUCCESS; /* found */
+			goto exit_check;
+		}
+	}
+
+exit_check:
+	if (fw_tddb)
+		vfree(fw_tddb);
+	if (tmp_tddb)
+		vfree(tmp_tddb);
+	return ret;
+}
+
+static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
+				       struct list_head *list_nt,
+				       struct dev_db_entry *fw_ddb_entry)
+{
+	struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
+	struct ql4_tuple_ddb *fw_tddb = NULL;
+	struct ql4_tuple_ddb *tmp_tddb = NULL;
+	int ret = QLA_ERROR;
+
+	fw_tddb = vzalloc(sizeof(*fw_tddb));
+	if (!fw_tddb) {
+		DEBUG2(ql4_printk(KERN_WARNING, ha,
+				  "Memory Allocation failed.\n"));
+		ret = QLA_SUCCESS;
+		goto exit_check;
+	}
+
+	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
+	if (!tmp_tddb) {
+		DEBUG2(ql4_printk(KERN_WARNING, ha,
+				  "Memory Allocation failed.\n"));
+		ret = QLA_SUCCESS;
+		goto exit_check;
+	}
+
+	qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb);
+
+	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
+		qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb);
+		if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true)) {
+			ret = QLA_SUCCESS; /* found */
+			goto exit_check;
+		}
+	}
+
+exit_check:
+	if (fw_tddb)
+		vfree(fw_tddb);
+	if (tmp_tddb)
+		vfree(tmp_tddb);
+	return ret;
+}
+
+static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
+{
+	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
+
+	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
+		list_del_init(&ddb_idx->list);
+		vfree(ddb_idx);
+	}
+}
+
+static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
+					struct dev_db_entry *fw_ddb_entry)
+{
+	struct iscsi_endpoint *ep;
+	struct sockaddr_in *addr;
+	struct sockaddr_in6 *addr6;
+	struct sockaddr *dst_addr;
+	char *ip;
+
+	/* TODO: need to destroy on unload iscsi_endpoint*/
+	dst_addr = vmalloc(sizeof(*dst_addr));
+	if (!dst_addr)
+		return NULL;
+
+	if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
+		dst_addr->sa_family = AF_INET6;
+		addr6 = (struct sockaddr_in6 *)dst_addr;
+		ip = (char *)&addr6->sin6_addr;
+		memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
+		addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
+
+	} else {
+		dst_addr->sa_family = AF_INET;
+		addr = (struct sockaddr_in *)dst_addr;
+		ip = (char *)&addr->sin_addr;
+		memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
+		addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
+	}
+
+	ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
+	vfree(dst_addr);
+	return ep;
+}
+
+static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
+{
+	if (ql4xdisablesysfsboot)
+		return QLA_SUCCESS;
+	if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
+		return QLA_ERROR;
+	return QLA_SUCCESS;
+}
+
+static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
+					  struct ddb_entry *ddb_entry)
+{
+	uint16_t def_timeout;
+
+	ddb_entry->ddb_type = FLASH_DDB;
+	ddb_entry->fw_ddb_index = INVALID_ENTRY;
+	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
+	ddb_entry->ha = ha;
+	ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
+	ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
+
+	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
+	atomic_set(&ddb_entry->relogin_timer, 0);
+	atomic_set(&ddb_entry->relogin_retry_count, 0);
+	def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
+	ddb_entry->default_relogin_timeout =
+		(def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
+		def_timeout : LOGIN_TOV;
+	ddb_entry->default_time2wait =
+		le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
+}
+
+static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
+{
+	uint32_t idx = 0;
+	uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
+	uint32_t sts[MBOX_REG_COUNT];
+	uint32_t ip_state;
+	unsigned long wtime;
+	int ret;
+
+	wtime = jiffies + (HZ * IP_CONFIG_TOV);
+	do {
+		for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
+			if (ip_idx[idx] == -1)
+				continue;
+
+			ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
+
+			if (ret == QLA_ERROR) {
+				ip_idx[idx] = -1;
+				continue;
+			}
+
+			ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
+
+			DEBUG2(ql4_printk(KERN_INFO, ha,
+					  "Waiting for IP state for idx = %d, state = 0x%x\n",
+					  ip_idx[idx], ip_state));
+			if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
+			    ip_state == IP_ADDRSTATE_INVALID ||
+			    ip_state == IP_ADDRSTATE_PREFERRED ||
+			    ip_state == IP_ADDRSTATE_DEPRICATED ||
+			    ip_state == IP_ADDRSTATE_DISABLING)
+				ip_idx[idx] = -1;
+		}
+
+		/* Break if all IP states checked */
+		if ((ip_idx[0] == -1) &&
+		    (ip_idx[1] == -1) &&
+		    (ip_idx[2] == -1) &&
+		    (ip_idx[3] == -1))
+			break;
+		schedule_timeout_uninterruptible(HZ);
+	} while (time_after(wtime, jiffies));
+}
+
+static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
+				  struct list_head *list_st)
+{
+	struct qla_ddb_index  *st_ddb_idx;
+	int max_ddbs;
+	int fw_idx_size;
+	struct dev_db_entry *fw_ddb_entry;
+	dma_addr_t fw_ddb_dma;
+	int ret;
+	uint32_t idx = 0, next_idx = 0;
+	uint32_t state = 0, conn_err = 0;
+	uint16_t conn_id = 0;
+
+	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
+				      &fw_ddb_dma);
+	if (fw_ddb_entry == NULL) {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
+		goto exit_st_list;
+	}
+
+	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
+				     MAX_DEV_DB_ENTRIES;
+	fw_idx_size = sizeof(struct qla_ddb_index);
+
+	for (idx = 0; idx < max_ddbs; idx = next_idx) {
+		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
+					      NULL, &next_idx, &state,
+					      &conn_err, NULL, &conn_id);
+		if (ret == QLA_ERROR)
+			break;
+
+		/* Ignore DDB if invalid state (unassigned) */
+		if (state == DDB_DS_UNASSIGNED)
+			goto continue_next_st;
+
+		/* Check if ST, add to the list_st */
+		if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
+			goto continue_next_st;
+
+		st_ddb_idx = vzalloc(fw_idx_size);
+		if (!st_ddb_idx)
+			break;
+
+		st_ddb_idx->fw_ddb_idx = idx;
+
+		list_add_tail(&st_ddb_idx->list, list_st);
+continue_next_st:
+		if (next_idx == 0)
+			break;
+	}
+
+exit_st_list:
+	if (fw_ddb_entry)
+		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
+}
+
+/**
+ * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
+ * @ha: pointer to adapter structure
+ * @list_ddb: List from which failed ddb to be removed
+ *
+ * Iterate over the list of DDBs and find and remove DDBs that are either in
+ * no connection active state or failed state
+ **/
+static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
+				      struct list_head *list_ddb)
+{
+	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
+	uint32_t next_idx = 0;
+	uint32_t state = 0, conn_err = 0;
+	int ret;
+
+	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
+		ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
+					      NULL, 0, NULL, &next_idx, &state,
+					      &conn_err, NULL, NULL);
+		if (ret == QLA_ERROR)
+			continue;
+
+		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
+		    state == DDB_DS_SESSION_FAILED) {
+			list_del_init(&ddb_idx->list);
+			vfree(ddb_idx);
+		}
+	}
+}
+
+static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
+				   struct dev_db_entry *fw_ddb_entry,
+				   int is_reset)
+{
+	struct iscsi_cls_session *cls_sess;
+	struct iscsi_session *sess;
+	struct iscsi_cls_conn *cls_conn;
+	struct iscsi_endpoint *ep;
+	uint16_t cmds_max = 32;
+	uint16_t conn_id = 0;
+	uint32_t initial_cmdsn = 0;
+	int ret = QLA_SUCCESS;
+
+	struct ddb_entry *ddb_entry = NULL;
+
+	/* Create session object, with INVALID_ENTRY,
+	 * the targer_id would get set when we issue the login
+	 */
+	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
+				       cmds_max, sizeof(struct ddb_entry),
+				       sizeof(struct ql4_task_data),
+				       initial_cmdsn, INVALID_ENTRY);
+	if (!cls_sess) {
+		ret = QLA_ERROR;
+		goto exit_setup;
+	}
+
+	/*
+	 * so calling module_put function to decrement the
+	 * reference count.
+	 **/
+	module_put(qla4xxx_iscsi_transport.owner);
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ddb_entry->sess = cls_sess;
+
+	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
+	memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
+	       sizeof(struct dev_db_entry));
+
+	qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
+
+	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
+
+	if (!cls_conn) {
+		ret = QLA_ERROR;
+		goto exit_setup;
+	}
+
+	ddb_entry->conn = cls_conn;
+
+	/* Setup ep, for displaying attributes in sysfs */
+	ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
+	if (ep) {
+		ep->conn = cls_conn;
+		cls_conn->ep = ep;
+	} else {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
+		ret = QLA_ERROR;
+		goto exit_setup;
+	}
+
+	/* Update sess/conn params */
+	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
+
+	if (is_reset == RESET_ADAPTER) {
+		iscsi_block_session(cls_sess);
+		/* Use the relogin path to discover new devices
+		 *  by short-circuting the logic of setting
+		 *  timer to relogin - instead set the flags
+		 *  to initiate login right away.
+		 */
+		set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
+		set_bit(DF_RELOGIN, &ddb_entry->flags);
+	}
+
+exit_setup:
+	return ret;
+}
+
+static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
+				  struct list_head *list_nt, int is_reset)
+{
+	struct dev_db_entry *fw_ddb_entry;
+	dma_addr_t fw_ddb_dma;
+	int max_ddbs;
+	int fw_idx_size;
+	int ret;
+	uint32_t idx = 0, next_idx = 0;
+	uint32_t state = 0, conn_err = 0;
+	uint16_t conn_id = 0;
+	struct qla_ddb_index  *nt_ddb_idx;
+
+	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
+				      &fw_ddb_dma);
+	if (fw_ddb_entry == NULL) {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
+		goto exit_nt_list;
+	}
+	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
+				     MAX_DEV_DB_ENTRIES;
+	fw_idx_size = sizeof(struct qla_ddb_index);
+
+	for (idx = 0; idx < max_ddbs; idx = next_idx) {
+		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
+					      NULL, &next_idx, &state,
+					      &conn_err, NULL, &conn_id);
+		if (ret == QLA_ERROR)
+			break;
+
+		if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
+			goto continue_next_nt;
+
+		/* Check if NT, then add to list it */
+		if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
+			goto continue_next_nt;
+
+		if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
+		    state == DDB_DS_SESSION_FAILED))
+			goto continue_next_nt;
+
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "Adding  DDB to session = 0x%x\n", idx));
+		if (is_reset == INIT_ADAPTER) {
+			nt_ddb_idx = vmalloc(fw_idx_size);
+			if (!nt_ddb_idx)
+				break;
+
+			nt_ddb_idx->fw_ddb_idx = idx;
+
+			memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
+			       sizeof(struct dev_db_entry));
+
+			if (qla4xxx_is_flash_ddb_exists(ha, list_nt,
+					fw_ddb_entry) == QLA_SUCCESS) {
+				vfree(nt_ddb_idx);
+				goto continue_next_nt;
+			}
+			list_add_tail(&nt_ddb_idx->list, list_nt);
+		} else if (is_reset == RESET_ADAPTER) {
+			if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
+								QLA_SUCCESS)
+				goto continue_next_nt;
+		}
+
+		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
+		if (ret == QLA_ERROR)
+			goto exit_nt_list;
+
+continue_next_nt:
+		if (next_idx == 0)
+			break;
+	}
+
+exit_nt_list:
+	if (fw_ddb_entry)
+		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
+}
+
+/**
+ * qla4xxx_build_ddb_list - Build ddb list and setup sessions
+ * @ha: pointer to adapter structure
+ * @is_reset: Is this init path or reset path
+ *
+ * Create a list of sendtargets (st) from firmware DDBs, issue send targets
+ * using connection open, then create the list of normal targets (nt)
+ * from firmware DDBs. Based on the list of nt setup session and connection
+ * objects.
+ **/
+void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
+{
+	uint16_t tmo = 0;
+	struct list_head list_st, list_nt;
+	struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
+	unsigned long wtime;
+
+	if (!test_bit(AF_LINK_UP, &ha->flags)) {
+		set_bit(AF_BUILD_DDB_LIST, &ha->flags);
+		ha->is_reset = is_reset;
+		return;
+	}
+
+	INIT_LIST_HEAD(&list_st);
+	INIT_LIST_HEAD(&list_nt);
+
+	qla4xxx_build_st_list(ha, &list_st);
+
+	/* Before issuing conn open mbox, ensure all IPs states are configured
+	 * Note, conn open fails if IPs are not configured
+	 */
+	qla4xxx_wait_for_ip_configuration(ha);
+
+	/* Go thru the STs and fire the sendtargets by issuing conn open mbx */
+	list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
+		qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
+	}
+
+	/* Wait to ensure all sendtargets are done for min 12 sec wait */
+	tmo = ((ha->def_timeout > LOGIN_TOV) &&
+	       (ha->def_timeout < LOGIN_TOV * 10) ?
+	       ha->def_timeout : LOGIN_TOV);
+
+	DEBUG2(ql4_printk(KERN_INFO, ha,
+			  "Default time to wait for build ddb %d\n", tmo));
+
+	wtime = jiffies + (HZ * tmo);
+	do {
+		if (list_empty(&list_st))
+			break;
+
+		qla4xxx_remove_failed_ddb(ha, &list_st);
+		schedule_timeout_uninterruptible(HZ / 10);
+	} while (time_after(wtime, jiffies));
+
+	/* Free up the sendtargets list */
+	qla4xxx_free_ddb_list(&list_st);
+
+	qla4xxx_build_nt_list(ha, &list_nt, is_reset);
+
+	qla4xxx_free_ddb_list(&list_nt);
+
+	qla4xxx_free_ddb_index(ha);
+}
+
+/**
+ * qla4xxx_probe_adapter - callback function to probe HBA
+ * @pdev: pointer to pci_dev structure
+ * @pci_device_id: pointer to pci_device entry
+ *
+ * This routine will probe for Qlogic 4xxx iSCSI host adapters.
+ * It returns zero if successful. It also initializes all data necessary for
+ * the driver.
+ **/
+static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
+					   const struct pci_device_id *ent)
+{
+	int ret = -ENODEV, status;
+	struct Scsi_Host *host;
+	struct scsi_qla_host *ha;
+	uint8_t init_retry_count = 0;
+	char buf[34];
+	struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
+	uint32_t dev_state;
+
+	if (pci_enable_device(pdev))
+		return -1;
+
+	host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
+	if (host == NULL) {
+		printk(KERN_WARNING
+		       "qla4xxx: Couldn't allocate host from scsi layer!\n");
+		goto probe_disable_device;
+	}
+
+	/* Clear our data area */
+	ha = to_qla_host(host);
+	memset(ha, 0, sizeof(*ha));
+
+	/* Save the information from PCI BIOS.	*/
+	ha->pdev = pdev;
+	ha->host = host;
+	ha->host_no = host->host_no;
+
+	pci_enable_pcie_error_reporting(pdev);
+
+	/* Setup Runtime configurable options */
+	if (is_qla8022(ha)) {
+		ha->isp_ops = &qla4_8xxx_isp_ops;
+		rwlock_init(&ha->hw_lock);
+		ha->qdr_sn_window = -1;
+		ha->ddr_mn_window = -1;
+		ha->curr_window = 255;
+		ha->func_num = PCI_FUNC(ha->pdev->devfn);
+		nx_legacy_intr = &legacy_intr[ha->func_num];
+		ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
+		ha->nx_legacy_intr.tgt_status_reg =
+			nx_legacy_intr->tgt_status_reg;
+		ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
+		ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
+	} else {
+		ha->isp_ops = &qla4xxx_isp_ops;
+	}
+
+	/* Set EEH reset type to fundamental if required by hba */
+	if (is_qla8022(ha))
+		pdev->needs_freset = 1;
+
+	/* Configure PCI I/O space. */
+	ret = ha->isp_ops->iospace_config(ha);
+	if (ret)
+		goto probe_failed_ioconfig;
+
+	ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
+		   pdev->device, pdev->irq, ha->reg);
+
+	qla4xxx_config_dma_addressing(ha);
+
+	/* Initialize lists and spinlocks. */
+	INIT_LIST_HEAD(&ha->free_srb_q);
+
+	mutex_init(&ha->mbox_sem);
+	mutex_init(&ha->chap_sem);
+	init_completion(&ha->mbx_intr_comp);
+	init_completion(&ha->disable_acb_comp);
+
+	spin_lock_init(&ha->hardware_lock);
+
+	/* Initialize work list */
+	INIT_LIST_HEAD(&ha->work_list);
+
+	/* Allocate dma buffers */
+	if (qla4xxx_mem_alloc(ha)) {
+		ql4_printk(KERN_WARNING, ha,
+		    "[ERROR] Failed to allocate memory for adapter\n");
+
+		ret = -ENOMEM;
+		goto probe_failed;
+	}
+
+	host->cmd_per_lun = 3;
+	host->max_channel = 0;
+	host->max_lun = MAX_LUNS - 1;
+	host->max_id = MAX_TARGETS;
+	host->max_cmd_len = IOCB_MAX_CDB_LEN;
+	host->can_queue = MAX_SRBS ;
+	host->transportt = qla4xxx_scsi_transport;
+
+	ret = scsi_init_shared_tag_map(host, MAX_SRBS);
+	if (ret) {
+		ql4_printk(KERN_WARNING, ha,
+			   "%s: scsi_init_shared_tag_map failed\n", __func__);
+		goto probe_failed;
+	}
+
+	pci_set_drvdata(pdev, ha);
+
+	ret = scsi_add_host(host, &pdev->dev);
+	if (ret)
+		goto probe_failed;
+
+	if (is_qla8022(ha))
+		(void) qla4_8xxx_get_flash_info(ha);
+
+	/*
+	 * Initialize the Host adapter request/response queues and
+	 * firmware
+	 * NOTE: interrupts enabled upon successful completion
+	 */
+	status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
+	while ((!test_bit(AF_ONLINE, &ha->flags)) &&
+	    init_retry_count++ < MAX_INIT_RETRIES) {
+
+		if (is_qla8022(ha)) {
+			qla4_8xxx_idc_lock(ha);
+			dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
+			qla4_8xxx_idc_unlock(ha);
+			if (dev_state == QLA82XX_DEV_FAILED) {
+				ql4_printk(KERN_WARNING, ha, "%s: don't retry "
+				    "initialize adapter. H/W is in failed state\n",
+				    __func__);
+				break;
+			}
+		}
+		DEBUG2(printk("scsi: %s: retrying adapter initialization "
+			      "(%d)\n", __func__, init_retry_count));
+
+		if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
+			continue;
+
+		status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
+	}
+
+	if (!test_bit(AF_ONLINE, &ha->flags)) {
+		ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
+
+		if (is_qla8022(ha) && ql4xdontresethba) {
+			/* Put the device in failed state. */
+			DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
+			qla4_8xxx_idc_lock(ha);
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+			    QLA82XX_DEV_FAILED);
+			qla4_8xxx_idc_unlock(ha);
+		}
+		ret = -ENODEV;
+		goto remove_host;
+	}
+
+	/* Startup the kernel thread for this host adapter. */
+	DEBUG2(printk("scsi: %s: Starting kernel thread for "
+		      "qla4xxx_dpc\n", __func__));
+	sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
+	ha->dpc_thread = create_singlethread_workqueue(buf);
+	if (!ha->dpc_thread) {
+		ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
+		ret = -ENODEV;
+		goto remove_host;
+	}
+	INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
+
+	sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
+	ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
+	if (!ha->task_wq) {
+		ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
+		ret = -ENODEV;
+		goto remove_host;
+	}
+
+	/* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
+	 * (which is called indirectly by qla4xxx_initialize_adapter),
+	 * so that irqs will be registered after crbinit but before
+	 * mbx_intr_enable.
+	 */
+	if (!is_qla8022(ha)) {
+		ret = qla4xxx_request_irqs(ha);
+		if (ret) {
+			ql4_printk(KERN_WARNING, ha, "Failed to reserve "
+			    "interrupt %d already in use.\n", pdev->irq);
+			goto remove_host;
+		}
+	}
+
+	pci_save_state(ha->pdev);
+	ha->isp_ops->enable_intrs(ha);
+
+	/* Start timer thread. */
+	qla4xxx_start_timer(ha, qla4xxx_timer, 1);
+
+	set_bit(AF_INIT_DONE, &ha->flags);
+
+	printk(KERN_INFO
+	       " QLogic iSCSI HBA Driver version: %s\n"
+	       "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
+	       qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
+	       ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
+	       ha->patch_number, ha->build_number);
+
+	if (qla4xxx_setup_boot_info(ha))
+		ql4_printk(KERN_ERR, ha,
+			   "%s: No iSCSI boot target configured\n", __func__);
+
+		/* Perform the build ddb list and login to each */
+	qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
+	iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
+
+	qla4xxx_create_chap_list(ha);
+
+	qla4xxx_create_ifaces(ha);
+	return 0;
+
+remove_host:
+	scsi_remove_host(ha->host);
+
+probe_failed:
+	qla4xxx_free_adapter(ha);
+
+probe_failed_ioconfig:
+	pci_disable_pcie_error_reporting(pdev);
+	scsi_host_put(ha->host);
+
+probe_disable_device:
+	pci_disable_device(pdev);
+
+	return ret;
+}
+
+/**
+ * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
+ * @ha: pointer to adapter structure
+ *
+ * Mark the other ISP-4xxx port to indicate that the driver is being removed,
+ * so that the other port will not re-initialize while in the process of
+ * removing the ha due to driver unload or hba hotplug.
+ **/
+static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
+{
+	struct scsi_qla_host *other_ha = NULL;
+	struct pci_dev *other_pdev = NULL;
+	int fn = ISP4XXX_PCI_FN_2;
+
+	/*iscsi function numbers for ISP4xxx is 1 and 3*/
+	if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
+		fn = ISP4XXX_PCI_FN_1;
+
+	other_pdev =
+		pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
+		ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
+		fn));
+
+	/* Get other_ha if other_pdev is valid and state is enable*/
+	if (other_pdev) {
+		if (atomic_read(&other_pdev->enable_cnt)) {
+			other_ha = pci_get_drvdata(other_pdev);
+			if (other_ha) {
+				set_bit(AF_HA_REMOVAL, &other_ha->flags);
+				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
+				    "Prevent %s reinit\n", __func__,
+				    dev_name(&other_ha->pdev->dev)));
+			}
+		}
+		pci_dev_put(other_pdev);
+	}
+}
+
+static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
+{
+	struct ddb_entry *ddb_entry;
+	int options;
+	int idx;
+
+	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
+
+		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
+		if ((ddb_entry != NULL) &&
+		    (ddb_entry->ddb_type == FLASH_DDB)) {
+
+			options = LOGOUT_OPTION_CLOSE_SESSION;
+			if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
+			    == QLA_ERROR)
+				ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
+					   __func__);
+
+			qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
+			/*
+			 * we have decremented the reference count of the driver
+			 * when we setup the session to have the driver unload
+			 * to be seamless without actually destroying the
+			 * session
+			 **/
+			try_module_get(qla4xxx_iscsi_transport.owner);
+			iscsi_destroy_endpoint(ddb_entry->conn->ep);
+			qla4xxx_free_ddb(ha, ddb_entry);
+			iscsi_session_teardown(ddb_entry->sess);
+		}
+	}
+}
+/**
+ * qla4xxx_remove_adapter - calback function to remove adapter.
+ * @pci_dev: PCI device pointer
+ **/
+static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
+{
+	struct scsi_qla_host *ha;
+
+	ha = pci_get_drvdata(pdev);
+
+	if (!is_qla8022(ha))
+		qla4xxx_prevent_other_port_reinit(ha);
+
+	/* destroy iface from sysfs */
+	qla4xxx_destroy_ifaces(ha);
+
+	if ((!ql4xdisablesysfsboot) && ha->boot_kset)
+		iscsi_boot_destroy_kset(ha->boot_kset);
+
+	qla4xxx_destroy_fw_ddb_session(ha);
+
+	scsi_remove_host(ha->host);
+
+	qla4xxx_free_adapter(ha);
+
+	scsi_host_put(ha->host);
+
+	pci_disable_pcie_error_reporting(pdev);
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+}
+
+/**
+ * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
+ * @ha: HA context
+ *
+ * At exit, the @ha's flags.enable_64bit_addressing set to indicated
+ * supported addressing method.
+ */
+static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
+{
+	int retval;
+
+	/* Update our PCI device dma_mask for full 64 bit mask */
+	if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
+		if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
+			dev_dbg(&ha->pdev->dev,
+				  "Failed to set 64 bit PCI consistent mask; "
+				   "using 32 bit.\n");
+			retval = pci_set_consistent_dma_mask(ha->pdev,
+							     DMA_BIT_MASK(32));
+		}
+	} else
+		retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
+}
+
+static int qla4xxx_slave_alloc(struct scsi_device *sdev)
+{
+	struct iscsi_cls_session *cls_sess;
+	struct iscsi_session *sess;
+	struct ddb_entry *ddb;
+	int queue_depth = QL4_DEF_QDEPTH;
+
+	cls_sess = starget_to_session(sdev->sdev_target);
+	sess = cls_sess->dd_data;
+	ddb = sess->dd_data;
+
+	sdev->hostdata = ddb;
+	sdev->tagged_supported = 1;
+
+	if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
+		queue_depth = ql4xmaxqdepth;
+
+	scsi_activate_tcq(sdev, queue_depth);
+	return 0;
+}
+
+static int qla4xxx_slave_configure(struct scsi_device *sdev)
+{
+	sdev->tagged_supported = 1;
+	return 0;
+}
+
+static void qla4xxx_slave_destroy(struct scsi_device *sdev)
+{
+	scsi_deactivate_tcq(sdev, 1);
+}
+
+/**
+ * qla4xxx_del_from_active_array - returns an active srb
+ * @ha: Pointer to host adapter structure.
+ * @index: index into the active_array
+ *
+ * This routine removes and returns the srb at the specified index
+ **/
+struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
+    uint32_t index)
+{
+	struct srb *srb = NULL;
+	struct scsi_cmnd *cmd = NULL;
+
+	cmd = scsi_host_find_tag(ha->host, index);
+	if (!cmd)
+		return srb;
+
+	srb = (struct srb *)CMD_SP(cmd);
+	if (!srb)
+		return srb;
+
+	/* update counters */
+	if (srb->flags & SRB_DMA_VALID) {
+		ha->req_q_count += srb->iocb_cnt;
+		ha->iocb_cnt -= srb->iocb_cnt;
+		if (srb->cmd)
+			srb->cmd->host_scribble =
+				(unsigned char *)(unsigned long) MAX_SRBS;
+	}
+	return srb;
+}
+
+/**
+ * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
+ * @ha: Pointer to host adapter structure.
+ * @cmd: Scsi Command to wait on.
+ *
+ * This routine waits for the command to be returned by the Firmware
+ * for some max time.
+ **/
+static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
+				      struct scsi_cmnd *cmd)
+{
+	int done = 0;
+	struct srb *rp;
+	uint32_t max_wait_time = EH_WAIT_CMD_TOV;
+	int ret = SUCCESS;
+
+	/* Dont wait on command if PCI error is being handled
+	 * by PCI AER driver
+	 */
+	if (unlikely(pci_channel_offline(ha->pdev)) ||
+	    (test_bit(AF_EEH_BUSY, &ha->flags))) {
+		ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
+		    ha->host_no, __func__);
+		return ret;
+	}
+
+	do {
+		/* Checking to see if its returned to OS */
+		rp = (struct srb *) CMD_SP(cmd);
+		if (rp == NULL) {
+			done++;
+			break;
+		}
+
+		msleep(2000);
+	} while (max_wait_time--);
+
+	return done;
+}
+
+/**
+ * qla4xxx_wait_for_hba_online - waits for HBA to come online
+ * @ha: Pointer to host adapter structure
+ **/
+static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
+{
+	unsigned long wait_online;
+
+	wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
+	while (time_before(jiffies, wait_online)) {
+
+		if (adapter_up(ha))
+			return QLA_SUCCESS;
+
+		msleep(2000);
+	}
+
+	return QLA_ERROR;
+}
+
+/**
+ * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
+ * @ha: pointer to HBA
+ * @t: target id
+ * @l: lun id
+ *
+ * This function waits for all outstanding commands to a lun to complete. It
+ * returns 0 if all pending commands are returned and 1 otherwise.
+ **/
+static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
+					struct scsi_target *stgt,
+					struct scsi_device *sdev)
+{
+	int cnt;
+	int status = 0;
+	struct scsi_cmnd *cmd;
+
+	/*
+	 * Waiting for all commands for the designated target or dev
+	 * in the active array
+	 */
+	for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
+		cmd = scsi_host_find_tag(ha->host, cnt);
+		if (cmd && stgt == scsi_target(cmd->device) &&
+		    (!sdev || sdev == cmd->device)) {
+			if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
+				status++;
+				break;
+			}
+		}
+	}
+	return status;
+}
+
+/**
+ * qla4xxx_eh_abort - callback for abort task.
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * This routine is called by the Linux OS to abort the specified
+ * command.
+ **/
+static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
+{
+	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+	unsigned int id = cmd->device->id;
+	unsigned int lun = cmd->device->lun;
+	unsigned long flags;
+	struct srb *srb = NULL;
+	int ret = SUCCESS;
+	int wait = 0;
+
+	ql4_printk(KERN_INFO, ha,
+	    "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
+	    ha->host_no, id, lun, cmd);
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	srb = (struct srb *) CMD_SP(cmd);
+	if (!srb) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		return SUCCESS;
+	}
+	kref_get(&srb->srb_ref);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
+		DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
+		    ha->host_no, id, lun));
+		ret = FAILED;
+	} else {
+		DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
+		    ha->host_no, id, lun));
+		wait = 1;
+	}
+
+	kref_put(&srb->srb_ref, qla4xxx_srb_compl);
+
+	/* Wait for command to complete */
+	if (wait) {
+		if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
+			DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
+			    ha->host_no, id, lun));
+			ret = FAILED;
+		}
+	}
+
+	ql4_printk(KERN_INFO, ha,
+	    "scsi%ld:%d:%d: Abort command - %s\n",
+	    ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
+
+	return ret;
+}
+
+/**
+ * qla4xxx_eh_device_reset - callback for target reset.
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * This routine is called by the Linux OS to reset all luns on the
+ * specified target.
+ **/
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
+{
+	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+	struct ddb_entry *ddb_entry = cmd->device->hostdata;
+	int ret = FAILED, stat;
+
+	if (!ddb_entry)
+		return ret;
+
+	ret = iscsi_block_scsi_eh(cmd);
+	if (ret)
+		return ret;
+	ret = FAILED;
+
+	ql4_printk(KERN_INFO, ha,
+		   "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
+		   cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+	DEBUG2(printk(KERN_INFO
+		      "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
+		      "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
+		      cmd, jiffies, cmd->request->timeout / HZ,
+		      ha->dpc_flags, cmd->result, cmd->allowed));
+
+	/* FIXME: wait for hba to go online */
+	stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
+	if (stat != QLA_SUCCESS) {
+		ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
+		goto eh_dev_reset_done;
+	}
+
+	if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
+					 cmd->device)) {
+		ql4_printk(KERN_INFO, ha,
+			   "DEVICE RESET FAILED - waiting for "
+			   "commands.\n");
+		goto eh_dev_reset_done;
+	}
+
+	/* Send marker. */
+	if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
+		MM_LUN_RESET) != QLA_SUCCESS)
+		goto eh_dev_reset_done;
+
+	ql4_printk(KERN_INFO, ha,
+		   "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
+		   ha->host_no, cmd->device->channel, cmd->device->id,
+		   cmd->device->lun);
+
+	ret = SUCCESS;
+
+eh_dev_reset_done:
+
+	return ret;
+}
+
+/**
+ * qla4xxx_eh_target_reset - callback for target reset.
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * This routine is called by the Linux OS to reset the target.
+ **/
+static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
+{
+	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+	struct ddb_entry *ddb_entry = cmd->device->hostdata;
+	int stat, ret;
+
+	if (!ddb_entry)
+		return FAILED;
+
+	ret = iscsi_block_scsi_eh(cmd);
+	if (ret)
+		return ret;
+
+	starget_printk(KERN_INFO, scsi_target(cmd->device),
+		       "WARM TARGET RESET ISSUED.\n");
+
+	DEBUG2(printk(KERN_INFO
+		      "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
+		      "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
+		      ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
+		      ha->dpc_flags, cmd->result, cmd->allowed));
+
+	stat = qla4xxx_reset_target(ha, ddb_entry);
+	if (stat != QLA_SUCCESS) {
+		starget_printk(KERN_INFO, scsi_target(cmd->device),
+			       "WARM TARGET RESET FAILED.\n");
+		return FAILED;
+	}
+
+	if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
+					 NULL)) {
+		starget_printk(KERN_INFO, scsi_target(cmd->device),
+			       "WARM TARGET DEVICE RESET FAILED - "
+			       "waiting for commands.\n");
+		return FAILED;
+	}
+
+	/* Send marker. */
+	if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
+		MM_TGT_WARM_RESET) != QLA_SUCCESS) {
+		starget_printk(KERN_INFO, scsi_target(cmd->device),
+			       "WARM TARGET DEVICE RESET FAILED - "
+			       "marker iocb failed.\n");
+		return FAILED;
+	}
+
+	starget_printk(KERN_INFO, scsi_target(cmd->device),
+		       "WARM TARGET RESET SUCCEEDED.\n");
+	return SUCCESS;
+}
+
+/**
+ * qla4xxx_is_eh_active - check if error handler is running
+ * @shost: Pointer to SCSI Host struct
+ *
+ * This routine finds that if reset host is called in EH
+ * scenario or from some application like sg_reset
+ **/
+static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
+{
+	if (shost->shost_state == SHOST_RECOVERY)
+		return 1;
+	return 0;
+}
+
+/**
+ * qla4xxx_eh_host_reset - kernel callback
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * This routine is invoked by the Linux kernel to perform fatal error
+ * recovery on the specified adapter.
+ **/
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
+{
+	int return_status = FAILED;
+	struct scsi_qla_host *ha;
+
+	ha = to_qla_host(cmd->device->host);
+
+	if (ql4xdontresethba) {
+		DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
+		     ha->host_no, __func__));
+
+		/* Clear outstanding srb in queues */
+		if (qla4xxx_is_eh_active(cmd->device->host))
+			qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
+
+		return FAILED;
+	}
+
+	ql4_printk(KERN_INFO, ha,
+		   "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
+		   cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+	if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
+			      "DEAD.\n", ha->host_no, cmd->device->channel,
+			      __func__));
+
+		return FAILED;
+	}
+
+	if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
+		if (is_qla8022(ha))
+			set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
+		else
+			set_bit(DPC_RESET_HA, &ha->dpc_flags);
+	}
+
+	if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
+		return_status = SUCCESS;
+
+	ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
+		   return_status == FAILED ? "FAILED" : "SUCCEEDED");
+
+	return return_status;
+}
+
+static int qla4xxx_context_reset(struct scsi_qla_host *ha)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	struct addr_ctrl_blk_def *acb = NULL;
+	uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
+	int rval = QLA_SUCCESS;
+	dma_addr_t acb_dma;
+
+	acb = dma_alloc_coherent(&ha->pdev->dev,
+				 sizeof(struct addr_ctrl_blk_def),
+				 &acb_dma, GFP_KERNEL);
+	if (!acb) {
+		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
+			   __func__);
+		rval = -ENOMEM;
+		goto exit_port_reset;
+	}
+
+	memset(acb, 0, acb_len);
+
+	rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
+	if (rval != QLA_SUCCESS) {
+		rval = -EIO;
+		goto exit_free_acb;
+	}
+
+	rval = qla4xxx_disable_acb(ha);
+	if (rval != QLA_SUCCESS) {
+		rval = -EIO;
+		goto exit_free_acb;
+	}
+
+	wait_for_completion_timeout(&ha->disable_acb_comp,
+				    DISABLE_ACB_TOV * HZ);
+
+	rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
+	if (rval != QLA_SUCCESS) {
+		rval = -EIO;
+		goto exit_free_acb;
+	}
+
+exit_free_acb:
+	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
+			  acb, acb_dma);
+exit_port_reset:
+	DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
+			  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
+	return rval;
+}
+
+static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	int rval = QLA_SUCCESS;
+
+	if (ql4xdontresethba) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
+				  __func__));
+		rval = -EPERM;
+		goto exit_host_reset;
+	}
+
+	rval = qla4xxx_wait_for_hba_online(ha);
+	if (rval != QLA_SUCCESS) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
+				  "adapter\n", __func__));
+		rval = -EIO;
+		goto exit_host_reset;
+	}
+
+	if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
+		goto recover_adapter;
+
+	switch (reset_type) {
+	case SCSI_ADAPTER_RESET:
+		set_bit(DPC_RESET_HA, &ha->dpc_flags);
+		break;
+	case SCSI_FIRMWARE_RESET:
+		if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
+			if (is_qla8022(ha))
+				/* set firmware context reset */
+				set_bit(DPC_RESET_HA_FW_CONTEXT,
+					&ha->dpc_flags);
+			else {
+				rval = qla4xxx_context_reset(ha);
+				goto exit_host_reset;
+			}
+		}
+		break;
+	}
+
+recover_adapter:
+	rval = qla4xxx_recover_adapter(ha);
+	if (rval != QLA_SUCCESS) {
+		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
+				  __func__));
+		rval = -EIO;
+	}
+
+exit_host_reset:
+	return rval;
+}
+
+/* PCI AER driver recovers from all correctable errors w/o
+ * driver intervention. For uncorrectable errors PCI AER
+ * driver calls the following device driver's callbacks
+ *
+ * - Fatal Errors - link_reset
+ * - Non-Fatal Errors - driver's pci_error_detected() which
+ * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
+ *
+ * PCI AER driver calls
+ * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
+ *               returns RECOVERED or NEED_RESET if fw_hung
+ * NEED_RESET - driver's slot_reset()
+ * DISCONNECT - device is dead & cannot recover
+ * RECOVERED - driver's pci_resume()
+ */
+static pci_ers_result_t
+qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
+{
+	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+
+	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
+	    ha->host_no, __func__, state);
+
+	if (!is_aer_supported(ha))
+		return PCI_ERS_RESULT_NONE;
+
+	switch (state) {
+	case pci_channel_io_normal:
+		clear_bit(AF_EEH_BUSY, &ha->flags);
+		return PCI_ERS_RESULT_CAN_RECOVER;
+	case pci_channel_io_frozen:
+		set_bit(AF_EEH_BUSY, &ha->flags);
+		qla4xxx_mailbox_premature_completion(ha);
+		qla4xxx_free_irqs(ha);
+		pci_disable_device(pdev);
+		/* Return back all IOs */
+		qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
+		return PCI_ERS_RESULT_NEED_RESET;
+	case pci_channel_io_perm_failure:
+		set_bit(AF_EEH_BUSY, &ha->flags);
+		set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
+		qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * qla4xxx_pci_mmio_enabled() gets called if
+ * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
+ * and read/write to the device still works.
+ **/
+static pci_ers_result_t
+qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
+{
+	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+
+	if (!is_aer_supported(ha))
+		return PCI_ERS_RESULT_NONE;
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
+{
+	uint32_t rval = QLA_ERROR;
+	uint32_t ret = 0;
+	int fn;
+	struct pci_dev *other_pdev = NULL;
+
+	ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
+
+	set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
+
+	if (test_bit(AF_ONLINE, &ha->flags)) {
+		clear_bit(AF_ONLINE, &ha->flags);
+		clear_bit(AF_LINK_UP, &ha->flags);
+		iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
+		qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+	}
+
+	fn = PCI_FUNC(ha->pdev->devfn);
+	while (fn > 0) {
+		fn--;
+		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
+		    "func %x\n", ha->host_no, __func__, fn);
+		/* Get the pci device given the domain, bus,
+		 * slot/function number */
+		other_pdev =
+		    pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
+		    ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
+		    fn));
+
+		if (!other_pdev)
+			continue;
+
+		if (atomic_read(&other_pdev->enable_cnt)) {
+			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
+			    "func in enabled state%x\n", ha->host_no,
+			    __func__, fn);
+			pci_dev_put(other_pdev);
+			break;
+		}
+		pci_dev_put(other_pdev);
+	}
+
+	/* The first function on the card, the reset owner will
+	 * start & initialize the firmware. The other functions
+	 * on the card will reset the firmware context
+	 */
+	if (!fn) {
+		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
+		    "0x%x is the owner\n", ha->host_no, __func__,
+		    ha->pdev->devfn);
+
+		qla4_8xxx_idc_lock(ha);
+		qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+		    QLA82XX_DEV_COLD);
+
+		qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
+		    QLA82XX_IDC_VERSION);
+
+		qla4_8xxx_idc_unlock(ha);
+		clear_bit(AF_FW_RECOVERY, &ha->flags);
+		rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
+		qla4_8xxx_idc_lock(ha);
+
+		if (rval != QLA_SUCCESS) {
+			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
+			    "FAILED\n", ha->host_no, __func__);
+			qla4_8xxx_clear_drv_active(ha);
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+			    QLA82XX_DEV_FAILED);
+		} else {
+			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
+			    "READY\n", ha->host_no, __func__);
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+			    QLA82XX_DEV_READY);
+			/* Clear driver state register */
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
+			qla4_8xxx_set_drv_active(ha);
+			ret = qla4xxx_request_irqs(ha);
+			if (ret) {
+				ql4_printk(KERN_WARNING, ha, "Failed to "
+				    "reserve interrupt %d already in use.\n",
+				    ha->pdev->irq);
+				rval = QLA_ERROR;
+			} else {
+				ha->isp_ops->enable_intrs(ha);
+				rval = QLA_SUCCESS;
+			}
+		}
+		qla4_8xxx_idc_unlock(ha);
+	} else {
+		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
+		    "the reset owner\n", ha->host_no, __func__,
+		    ha->pdev->devfn);
+		if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
+		    QLA82XX_DEV_READY)) {
+			clear_bit(AF_FW_RECOVERY, &ha->flags);
+			rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
+			if (rval == QLA_SUCCESS) {
+				ret = qla4xxx_request_irqs(ha);
+				if (ret) {
+					ql4_printk(KERN_WARNING, ha, "Failed to"
+					    " reserve interrupt %d already in"
+					    " use.\n", ha->pdev->irq);
+					rval = QLA_ERROR;
+				} else {
+					ha->isp_ops->enable_intrs(ha);
+					rval = QLA_SUCCESS;
+				}
+			}
+			qla4_8xxx_idc_lock(ha);
+			qla4_8xxx_set_drv_active(ha);
+			qla4_8xxx_idc_unlock(ha);
+		}
+	}
+	clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
+	return rval;
+}
+
+static pci_ers_result_t
+qla4xxx_pci_slot_reset(struct pci_dev *pdev)
+{
+	pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
+	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+	int rc;
+
+	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
+	    ha->host_no, __func__);
+
+	if (!is_aer_supported(ha))
+		return PCI_ERS_RESULT_NONE;
+
+	/* Restore the saved state of PCIe device -
+	 * BAR registers, PCI Config space, PCIX, MSI,
+	 * IOV states
+	 */
+	pci_restore_state(pdev);
+
+	/* pci_restore_state() clears the saved_state flag of the device
+	 * save restored state which resets saved_state flag
+	 */
+	pci_save_state(pdev);
+
+	/* Initialize device or resume if in suspended state */
+	rc = pci_enable_device(pdev);
+	if (rc) {
+		ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
+		    "device after reset\n", ha->host_no, __func__);
+		goto exit_slot_reset;
+	}
+
+	ha->isp_ops->disable_intrs(ha);
+
+	if (is_qla8022(ha)) {
+		if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
+			ret = PCI_ERS_RESULT_RECOVERED;
+			goto exit_slot_reset;
+		} else
+			goto exit_slot_reset;
+	}
+
+exit_slot_reset:
+	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
+	    "device after reset\n", ha->host_no, __func__, ret);
+	return ret;
+}
+
+static void
+qla4xxx_pci_resume(struct pci_dev *pdev)
+{
+	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+	int ret;
+
+	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
+	    ha->host_no, __func__);
+
+	ret = qla4xxx_wait_for_hba_online(ha);
+	if (ret != QLA_SUCCESS) {
+		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
+		    "resume I/O from slot/link_reset\n", ha->host_no,
+		     __func__);
+	}
+
+	pci_cleanup_aer_uncorrect_error_status(pdev);
+	clear_bit(AF_EEH_BUSY, &ha->flags);
+}
+
+static struct pci_error_handlers qla4xxx_err_handler = {
+	.error_detected = qla4xxx_pci_error_detected,
+	.mmio_enabled = qla4xxx_pci_mmio_enabled,
+	.slot_reset = qla4xxx_pci_slot_reset,
+	.resume = qla4xxx_pci_resume,
+};
+
+static struct pci_device_id qla4xxx_pci_tbl[] = {
+	{
+		.vendor		= PCI_VENDOR_ID_QLOGIC,
+		.device		= PCI_DEVICE_ID_QLOGIC_ISP4010,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_QLOGIC,
+		.device		= PCI_DEVICE_ID_QLOGIC_ISP4022,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_QLOGIC,
+		.device		= PCI_DEVICE_ID_QLOGIC_ISP4032,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+	},
+	{
+		.vendor         = PCI_VENDOR_ID_QLOGIC,
+		.device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
+		.subvendor      = PCI_ANY_ID,
+		.subdevice      = PCI_ANY_ID,
+	},
+	{0, 0},
+};
+MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
+
+static struct pci_driver qla4xxx_pci_driver = {
+	.name		= DRIVER_NAME,
+	.id_table	= qla4xxx_pci_tbl,
+	.probe		= qla4xxx_probe_adapter,
+	.remove		= qla4xxx_remove_adapter,
+	.err_handler = &qla4xxx_err_handler,
+};
+
+static int __init qla4xxx_module_init(void)
+{
+	int ret;
+
+	/* Allocate cache for SRBs. */
+	srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
+				       SLAB_HWCACHE_ALIGN, NULL);
+	if (srb_cachep == NULL) {
+		printk(KERN_ERR
+		       "%s: Unable to allocate SRB cache..."
+		       "Failing load!\n", DRIVER_NAME);
+		ret = -ENOMEM;
+		goto no_srp_cache;
+	}
+
+	/* Derive version string. */
+	strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
+	if (ql4xextended_error_logging)
+		strcat(qla4xxx_version_str, "-debug");
+
+	qla4xxx_scsi_transport =
+		iscsi_register_transport(&qla4xxx_iscsi_transport);
+	if (!qla4xxx_scsi_transport){
+		ret = -ENODEV;
+		goto release_srb_cache;
+	}
+
+	ret = pci_register_driver(&qla4xxx_pci_driver);
+	if (ret)
+		goto unregister_transport;
+
+	printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
+	return 0;
+
+unregister_transport:
+	iscsi_unregister_transport(&qla4xxx_iscsi_transport);
+release_srb_cache:
+	kmem_cache_destroy(srb_cachep);
+no_srp_cache:
+	return ret;
+}
+
+static void __exit qla4xxx_module_exit(void)
+{
+	pci_unregister_driver(&qla4xxx_pci_driver);
+	iscsi_unregister_transport(&qla4xxx_iscsi_transport);
+	kmem_cache_destroy(srb_cachep);
+}
+
+module_init(qla4xxx_module_init);
+module_exit(qla4xxx_module_exit);
+
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLA4XXX_DRIVER_VERSION);