[RFC-v5 1/3] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>

This patch adds the internal qla_target.[c,h] support pieces for qla2xxx
LLD target mode for 24xx series HW.  This code was originally based on
external qla2x00t module based on 8.02.01-k4, and has been refactored to push
the bulk of code into mainline qla2xxx.ko LLD -> qla_target.c.

The implementation uses internal workqueues for I/O context submission
into tcm_qla2xxx code, and includes the following API for external
interaction to allow qla2xxx LDD to function without direct target-core
dependencies:

struct qla_tgt_func_tmpl {

        int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
                        unsigned char *, uint32_t, int, int, int);
        int (*handle_data)(struct qla_tgt_cmd *);
        int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t, uint32_t);
        void (*free_cmd)(struct qla_tgt_cmd *);
        void (*free_session)(struct qla_tgt_sess *);

        int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
                                        void *, uint8_t *, uint16_t);
        struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
                                                const uint16_t);
        struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
                                                const uint8_t *);
        void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
        void (*put_sess)(struct qla_tgt_sess *);
};

Cc: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
Cc: Arun Easi <arun.easi@xxxxxxxxxx>
Cc: Giridhar Malavali <giridhar.malavali@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: James Bottomley <JBottomley@xxxxxxxxxxxxx>
Cc: Roland Dreier <roland@xxxxxxxxxxxxxxx>
Cc: Joern Engel <joern@xxxxxxxxx>
Cc: Madhuranath Iyengar <mni@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx>
---
 drivers/scsi/qla2xxx/Makefile     |    2 +-
 drivers/scsi/qla2xxx/qla_target.c | 4730 +++++++++++++++++++++++++++++++++++++
 drivers/scsi/qla2xxx/qla_target.h |  984 ++++++++
 3 files changed, 5715 insertions(+), 1 deletions(-)
 create mode 100644 drivers/scsi/qla2xxx/qla_target.c
 create mode 100644 drivers/scsi/qla2xxx/qla_target.h

diff --git a/drivers/scsi/qla2xxx/Makefile b/drivers/scsi/qla2xxx/Makefile
index 5df782f..702931ff 100644
--- a/drivers/scsi/qla2xxx/Makefile
+++ b/drivers/scsi/qla2xxx/Makefile
@@ -1,5 +1,5 @@
 qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
 		qla_dbg.o qla_sup.o qla_attr.o qla_mid.o qla_dfs.o qla_bsg.o \
-        qla_nx.o
+        qla_nx.o qla_target.o
 
 obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
new file mode 100644
index 0000000..7aebfe2
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -0,0 +1,4730 @@
+/*
+ *  qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
+ *
+ *  based on qla2x00t.c code:
+ *
+ *  Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@xxxxxxxx>
+ *  Copyright (C) 2004 - 2005 Leonid Stoljar
+ *  Copyright (C) 2006 Nathaniel Clark <nate@xxxxxxxxxx>
+ *  Copyright (C) 2006 - 2010 ID7 Ltd.
+ *
+ *  Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ *  Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@xxxxxxxxxx>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation, version 2
+ *  of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *  GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+
+static char *qlini_mode = QLA2XXX_INI_MODE_STR_DISABLED;
+module_param(qlini_mode, charp, S_IRUGO);
+MODULE_PARM_DESC(qlini_mode,
+	"Determines when initiator mode will be enabled. Possible values: "
+	"\"exclusive\" - initiator mode will be enabled on load, "
+	"disabled on enabling target mode and then on disabling target mode "
+	"enabled back; "
+	"\"disabled\" (default) - initiator mode will never be enabled; "
+	"\"enabled\" - initiator mode will always stay enabled.");
+
+static int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+
+/*
+ * From scsi/fc/fc_fcp.h
+ */
+enum fcp_resp_rsp_codes {
+	FCP_TMF_CMPL = 0,
+	FCP_DATA_LEN_INVALID = 1,
+	FCP_CMND_FIELDS_INVALID = 2,
+	FCP_DATA_PARAM_MISMATCH = 3,
+	FCP_TMF_REJECTED = 4,
+	FCP_TMF_FAILED = 5,
+	FCP_TMF_INVALID_LUN = 9,
+};
+
+/*
+ * fc_pri_ta from scsi/fc/fc_fcp.h
+ */
+#define FCP_PTA_SIMPLE      0   /* simple task attribute */
+#define FCP_PTA_HEADQ       1   /* head of queue task attribute */
+#define FCP_PTA_ORDERED     2   /* ordered task attribute */
+#define FCP_PTA_ACA         4   /* auto. contigent allegiance */
+#define FCP_PTA_MASK        7   /* mask for task attribute field */
+#define FCP_PRI_SHIFT       3   /* priority field starts in bit 3 */
+#define FCP_PRI_RESVD_MASK  0x80        /* reserved bits in priority field */
+
+/*
+ * This driver calls qla2x00_req_pkt() and qla2x00_issue_marker(), which
+ * must be called under HW lock and could unlock/lock it inside.
+ * It isn't an issue, since in the current implementation on the time when
+ * those functions are called:
+ *
+ *   - Either context is IRQ and only IRQ handler can modify HW data,
+ *     including rings related fields,
+ *
+ *   - Or access to target mode variables from struct qla_tgt doesn't
+ *     cross those functions boundaries, except tgt_stop, which
+ *     additionally protected by irq_cmd_count.
+ */
+/* Predefs for callbacks handed to qla2xxx LLD */
+static void qla_tgt_24xx_atio_pkt(struct scsi_qla_host *ha, atio_from_isp_t *pkt);
+static void qla_tgt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
+static int qla_tgt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
+	int fn, void *iocb, int flags);
+static void qla_tgt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd *cmd,
+	atio_from_isp_t *atio, int ha_locked);
+static void qla_tgt_reject_free_srr_imm(struct scsi_qla_host *ha, struct qla_tgt_srr_imm *imm,
+	int ha_lock);
+/*
+ * Global Variables
+ */
+static struct kmem_cache *qla_tgt_cmd_cachep;
+static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
+static mempool_t *qla_tgt_mgmt_cmd_mempool;
+static struct workqueue_struct *qla_tgt_wq;
+static DEFINE_MUTEX(qla_tgt_mutex);
+static LIST_HEAD(qla_tgt_glist);
+/*
+ * From qla2xxx/qla_iobc.c and used by various qla_target.c logic
+ */
+extern request_t *qla2x00_req_pkt(struct scsi_qla_host *);
+
+/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
+static struct qla_tgt_sess *qla_tgt_find_sess_by_port_name(
+	struct qla_tgt *tgt,
+	const uint8_t *port_name)
+{
+	struct qla_tgt_sess *sess;
+
+	list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
+		if ((sess->port_name[0] == port_name[0]) &&
+		    (sess->port_name[1] == port_name[1]) &&
+		    (sess->port_name[2] == port_name[2]) &&
+		    (sess->port_name[3] == port_name[3]) &&
+		    (sess->port_name[4] == port_name[4]) &&
+		    (sess->port_name[5] == port_name[5]) &&
+		    (sess->port_name[6] == port_name[6]) &&
+		    (sess->port_name[7] == port_name[7]))
+			return sess;
+	}
+
+	return NULL;
+}
+
+/* Might release hw lock, then reaquire!! */
+static inline int qla_tgt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
+{
+	/* Send marker if required */
+	if (unlikely(vha->marker_needed != 0)) {
+		int rc = qla2x00_issue_marker(vha, vha_locked);
+		if (rc != QLA_SUCCESS) {
+			printk(KERN_ERR "qla_target(%d): issue_marker() "
+				"failed\n", vha->vp_idx);
+		}
+		return rc;
+	}
+	return QLA_SUCCESS;
+}
+
+static inline
+struct scsi_qla_host *qla_tgt_find_host_by_d_id(struct scsi_qla_host *vha, uint8_t *d_id)
+{
+	struct qla_hw_data *ha = vha->hw;
+	uint8_t vp_idx;
+
+	if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
+		return NULL;
+
+	if (vha->d_id.b.al_pa == d_id[2])
+		return vha;
+
+	BUG_ON(ha->tgt_vp_map == NULL);
+	vp_idx = ha->tgt_vp_map[d_id[2]].idx;
+	if (likely(test_bit(vp_idx, ha->vp_idx_map)))
+		return ha->tgt_vp_map[vp_idx].vha;
+
+	return NULL;
+}
+
+static inline
+struct scsi_qla_host *qla_tgt_find_host_by_vp_idx(struct scsi_qla_host *vha, uint16_t vp_idx)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	if (vha->vp_idx == vp_idx)
+		return vha;
+
+	BUG_ON(ha->tgt_vp_map == NULL);
+	if (likely(test_bit(vp_idx, ha->vp_idx_map)))
+		return ha->tgt_vp_map[vp_idx].vha;
+
+	return NULL;
+}
+
+void qla_tgt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, atio_from_isp_t *atio)
+{
+	switch (atio->u.raw.entry_type) {
+	case ATIO_TYPE7:
+	{
+		struct scsi_qla_host *host = qla_tgt_find_host_by_d_id(vha,
+						atio->u.isp24.fcp_hdr.d_id);
+		if (unlikely(NULL == host)) {
+			printk(KERN_ERR "qla_target(%d): Received ATIO_TYPE7 "
+				"with unknown d_id %x:%x:%x\n", vha->vp_idx,
+				atio->u.isp24.fcp_hdr.d_id[0],
+				atio->u.isp24.fcp_hdr.d_id[1],
+				atio->u.isp24.fcp_hdr.d_id[2]);
+			break;
+		}
+		qla_tgt_24xx_atio_pkt(host, atio);
+		break;
+	}
+
+	case IMMED_NOTIFY_TYPE:
+	{
+		struct scsi_qla_host *host = vha;
+		imm_ntfy_from_isp_t *entry = (imm_ntfy_from_isp_t *)atio;
+
+		if ((entry->u.isp24.vp_index != 0xFF) &&
+		    (entry->u.isp24.nport_handle != 0xFFFF)) {
+			host = qla_tgt_find_host_by_vp_idx(vha,
+						entry->u.isp24.vp_index);
+			if (unlikely(!host)) {
+				printk(KERN_ERR "qla_target(%d): Received "
+					"ATIO (IMMED_NOTIFY_TYPE) "
+					"with unknown vp_index %d\n",
+					vha->vp_idx, entry->u.isp24.vp_index);
+				break;
+			}
+		}
+		qla_tgt_24xx_atio_pkt(host, atio);
+		break;
+	}
+
+	default:
+		printk(KERN_ERR "qla_target(%d): Received unknown ATIO atio "
+		     "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
+		break;
+	}
+
+	return;
+}
+
+void qla_tgt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
+{
+	switch (pkt->entry_type) {
+	case CTIO_TYPE7:
+	{
+		ctio7_from_24xx_t *entry = (ctio7_from_24xx_t *)pkt;
+		struct scsi_qla_host *host = qla_tgt_find_host_by_vp_idx(vha,
+						entry->vp_index);
+		if (unlikely(!host)) {
+			printk(KERN_ERR "qla_target(%d): Response pkt (CTIO_TYPE7) "
+				"received, with unknown vp_index %d\n",
+				vha->vp_idx, entry->vp_index);
+			break;
+		}
+		qla_tgt_response_pkt(host, pkt);
+		break;
+	}
+
+	case IMMED_NOTIFY_TYPE:
+	{
+		struct scsi_qla_host *host = vha;
+		imm_ntfy_from_isp_t *entry = (imm_ntfy_from_isp_t *)pkt;
+
+		host = qla_tgt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
+		if (unlikely(!host)) {
+			printk(KERN_ERR "qla_target(%d): Response pkt "
+				"(IMMED_NOTIFY_TYPE) received, "
+				"with unknown vp_index %d\n",
+				vha->vp_idx, entry->u.isp24.vp_index);
+			break;
+		}
+		qla_tgt_response_pkt(host, pkt);
+		break;
+	}
+
+	case NOTIFY_ACK_TYPE:
+	{
+		struct scsi_qla_host *host = vha;
+		nack_to_isp_t *entry = (nack_to_isp_t *)pkt;
+
+		if (0xFF != entry->u.isp24.vp_index) {
+			host = qla_tgt_find_host_by_vp_idx(vha,
+					entry->u.isp24.vp_index);
+			if (unlikely(!host)) {
+				printk(KERN_ERR "qla_target(%d): Response "
+					"pkt (NOTIFY_ACK_TYPE) "
+					"received, with unknown "
+					"vp_index %d\n", vha->vp_idx,
+					entry->u.isp24.vp_index);
+				break;
+			}
+		}
+		qla_tgt_response_pkt(host, pkt);
+		break;
+	}
+
+	case ABTS_RECV_24XX:
+	{
+		abts_recv_from_24xx_t *entry = (abts_recv_from_24xx_t *)pkt;
+		struct scsi_qla_host *host = qla_tgt_find_host_by_vp_idx(vha,
+						entry->vp_index);
+		if (unlikely(!host)) {
+			printk(KERN_ERR "qla_target(%d): Response pkt "
+				"(ABTS_RECV_24XX) received, with unknown "
+				"vp_index %d\n", vha->vp_idx, entry->vp_index);
+			break;
+		}
+		qla_tgt_response_pkt(host, pkt);
+		break;
+	}
+
+	case ABTS_RESP_24XX:
+	{
+		abts_resp_to_24xx_t *entry = (abts_resp_to_24xx_t *)pkt;
+		struct scsi_qla_host *host = qla_tgt_find_host_by_vp_idx(vha,
+						entry->vp_index);
+		if (unlikely(!host)) {
+			printk(KERN_ERR "qla_target(%d): Response pkt "
+				"(ABTS_RECV_24XX) received, with unknown "
+				"vp_index %d\n", vha->vp_idx, entry->vp_index);
+			break;
+		}
+		qla_tgt_response_pkt(host, pkt);
+		break;
+	}
+
+	default:
+		qla_tgt_response_pkt(vha, pkt);
+		break;
+	}
+
+}
+
+static void qla_tgt_free_session_done(struct work_struct *work)
+{
+	struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
+					free_work);
+	struct qla_tgt *tgt = sess->tgt;
+	struct scsi_qla_host *vha = sess->vha;
+	struct qla_hw_data *ha = vha->hw;
+
+	BUG_ON(!tgt);
+	/*
+	 * Release the target session for FC Nexus from fabric module code.
+	 */
+	if (sess->se_sess != NULL)
+		ha->tgt_ops->free_session(sess);
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe104, "Unregistration of"
+		" sess %p finished\n", sess);
+
+	kfree(sess);
+	/*
+	 * We need to protect against race, when tgt is freed before or
+	 * inside wake_up()
+	 */
+	tgt->sess_count--;
+	if (tgt->sess_count == 0)
+		wake_up_all(&tgt->waitQ);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+void qla_tgt_unreg_sess(struct qla_tgt_sess *sess)
+{
+	struct scsi_qla_host *vha = sess->vha;
+
+	vha->hw->tgt_ops->clear_nacl_from_fcport_map(sess);
+
+	list_del(&sess->sess_list_entry);
+	if (sess->deleted)
+		list_del(&sess->del_list_entry);
+
+	INIT_WORK(&sess->free_work, qla_tgt_free_session_done);
+	schedule_work(&sess->free_work);
+}
+EXPORT_SYMBOL(qla_tgt_unreg_sess);
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess = NULL;
+	uint32_t unpacked_lun, lun = 0;
+	uint16_t loop_id;
+	int res = 0;
+	uint8_t s_id[3];
+	imm_ntfy_from_isp_t *n = (imm_ntfy_from_isp_t *)iocb;
+	atio_from_isp_t *a = (atio_from_isp_t *)iocb;
+
+	memset(&s_id, 0, 3);
+
+	loop_id = le16_to_cpu(n->u.isp24.nport_handle);
+	s_id[0] = n->u.isp24.port_id[0];
+	s_id[1] = n->u.isp24.port_id[1];
+	s_id[2] = n->u.isp24.port_id[2];
+
+	if (loop_id == 0xFFFF) {
+/* FIXME: Re-enable Global event handling.. */
+#if 0
+		/* Global event */
+		printk("Processing qla_tgt_reset with loop_id=0xffff global event............\n");
+		atomic_inc(&ha->qla_tgt->tgt_global_resets_count);
+		qla_tgt_clear_tgt_db(ha->qla_tgt, 1);
+		if (!list_empty(&ha->qla_tgt->sess_list)) {
+			sess = list_entry(ha->qla_tgt->sess_list.next,
+				typeof(*sess), sess_list_entry);
+			switch (mcmd) {
+			case QLA_TGT_NEXUS_LOSS_SESS:
+				mcmd = QLA_TGT_NEXUS_LOSS;
+				break;
+			case QLA_TGT_ABORT_ALL_SESS:
+				mcmd = QLA_TGT_ABORT_ALL;
+				break;
+			case QLA_TGT_NEXUS_LOSS:
+			case QLA_TGT_ABORT_ALL:
+				break;
+			default:
+				printk(KERN_ERR "qla_target(%d): Not allowed "
+					"command %x in %s", vha->vp_idx,
+					mcmd, __func__);
+				sess = NULL;
+				break;
+			}
+		} else
+			sess = NULL;
+#endif
+	} else {
+		sess = ha->tgt_ops->find_sess_by_loop_id(vha, loop_id);
+	}
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe003, "Using sess for"
+			" qla_tgt_reset: %p\n", sess);
+	if (!sess) {
+		res = -ESRCH;
+		ha->qla_tgt->tm_to_unknown = 1;
+		return res;
+	}
+
+	printk(KERN_INFO "scsi(%ld): resetting (session %p from port "
+		"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, "
+		"mcmd %x, loop_id %d)\n", vha->host_no, sess,
+		sess->port_name[0], sess->port_name[1],
+		sess->port_name[2], sess->port_name[3],
+		sess->port_name[4], sess->port_name[5],
+		sess->port_name[6], sess->port_name[7],
+		mcmd, loop_id);
+
+	lun = a->u.isp24.fcp_cmnd.lun;
+	unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+	return qla_tgt_issue_task_mgmt(sess, unpacked_lun, mcmd,
+				iocb, QLA24XX_MGMT_SEND_NACK);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_schedule_sess_for_deletion(struct qla_tgt_sess *sess, bool immediate)
+{
+	struct qla_tgt *tgt = sess->tgt;
+	uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
+
+	if (sess->deleted)
+		return;
+
+	ql_dbg(ql_dbg_tgt, sess->vha, 0xe004, "Scheduling sess %p for"
+		" deletion\n", sess);
+	list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
+	sess->deleted = 1;
+
+	if (immediate)
+		dev_loss_tmo = 0;
+
+	sess->expires = jiffies + dev_loss_tmo * HZ;
+
+	printk(KERN_INFO "qla_target(%d): session for port %02x:%02x:%02x:"
+		"%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
+		"deletion in %u secs (expires: %lu) immed: %d\n", sess->vha->vp_idx,
+		sess->port_name[0], sess->port_name[1],
+		sess->port_name[2], sess->port_name[3],
+		sess->port_name[4], sess->port_name[5],
+		sess->port_name[6], sess->port_name[7],
+		sess->loop_id, dev_loss_tmo, sess->expires, immediate);
+
+	if (immediate)
+		schedule_delayed_work(&tgt->sess_del_work, 0);
+	else
+		schedule_delayed_work(&tgt->sess_del_work, jiffies - sess->expires);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
+{
+	struct qla_tgt_sess *sess;
+
+	list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
+		qla_tgt_schedule_sess_for_deletion(sess, true);
+
+	/* At this point tgt could be already dead */
+}
+
+static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
+	uint16_t *loop_id)
+{
+	struct qla_hw_data *ha = vha->hw;
+	dma_addr_t gid_list_dma;
+	struct gid_list_info *gid_list;
+	char *id_iter;
+	int res, rc, i;
+	uint16_t entries;
+
+	gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
+			&gid_list_dma, GFP_KERNEL);
+	if (!gid_list) {
+		printk(KERN_ERR "qla_target(%d): DMA Alloc failed of %zd\n",
+			vha->vp_idx, GID_LIST_SIZE);
+		return -ENOMEM;
+	}
+
+	/* Get list of logged in devices */
+	rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
+	if (rc != QLA_SUCCESS) {
+		printk(KERN_ERR "qla_target(%d): get_id_list() failed: %x\n",
+			vha->vp_idx, rc);
+		res = -1;
+		goto out_free_id_list;
+	}
+
+	id_iter = (char *)gid_list;
+	res = -1;
+	for (i = 0; i < entries; i++) {
+		struct gid_list_info *gid = (struct gid_list_info *)id_iter;
+		if ((gid->al_pa == s_id[2]) &&
+		    (gid->area == s_id[1]) &&
+		    (gid->domain == s_id[0])) {
+			*loop_id = le16_to_cpu(gid->loop_id);
+			res = 0;
+			break;
+		}
+		id_iter += ha->gid_list_info_size;
+	}
+
+out_free_id_list:
+	dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, gid_list, gid_list_dma);
+
+	return res;
+}
+
+static bool qla_tgt_check_fcport_exist(struct scsi_qla_host *vha, struct qla_tgt_sess *sess)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_port_24xx_data *pmap24;
+	bool res, found = false;
+	int rc, i;
+	uint16_t loop_id = 0xFFFF; /* to eliminate compiler's warning */
+	uint16_t entries;
+	void *pmap;
+	int pmap_len;
+	fc_port_t *fcport;
+	int global_resets;
+
+retry:
+	global_resets = atomic_read(&ha->qla_tgt->tgt_global_resets_count);
+
+	rc = qla2x00_get_node_name_list(vha, &pmap, &pmap_len);
+	if (rc != QLA_SUCCESS) {
+		res = false;
+		goto out;
+	}
+
+	pmap24 = pmap;
+	entries = pmap_len/sizeof(*pmap24);
+
+	for (i = 0; i < entries; ++i) {
+		if ((sess->port_name[0] == pmap24[i].port_name[0]) &&
+		    (sess->port_name[1] == pmap24[i].port_name[1]) &&
+		    (sess->port_name[2] == pmap24[i].port_name[2]) &&
+		    (sess->port_name[3] == pmap24[i].port_name[3]) &&
+		    (sess->port_name[4] == pmap24[i].port_name[4]) &&
+		    (sess->port_name[5] == pmap24[i].port_name[5]) &&
+		    (sess->port_name[6] == pmap24[i].port_name[6]) &&
+		    (sess->port_name[7] == pmap24[i].port_name[7])) {
+			loop_id = le16_to_cpu(pmap24[i].loop_id);
+			found = true;
+			break;
+		}
+	}
+
+	kfree(pmap);
+
+	if (!found) {
+		res = false;
+		goto out;
+	}
+
+	printk(KERN_INFO "qla_tgt_check_fcport_exist(): loop_id %d", loop_id);
+
+	fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
+	if (fcport == NULL) {
+		printk(KERN_ERR "qla_target(%d): Allocation of tmp FC port failed",
+			vha->vp_idx);
+		res = false;
+		goto out;
+	}
+
+	fcport->loop_id = loop_id;
+
+	rc = qla2x00_get_port_database(vha, fcport, 0);
+	if (rc != QLA_SUCCESS) {
+		printk(KERN_ERR "qla_target(%d): Failed to retrieve fcport "
+			"information -- get_port_database() returned %x "
+			"(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
+		res = false;
+		goto out_free_fcport;
+	}
+
+	if (global_resets != atomic_read(&ha->qla_tgt->tgt_global_resets_count)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe105, "qla_target(%d): global reset"
+			" during session discovery (counter was %d, new %d),"
+			" retrying", vha->vp_idx, global_resets,
+			atomic_read(&ha->qla_tgt->tgt_global_resets_count));
+		goto retry;
+	}
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe106, "Updating sess %p s_id %x:%x:%x, "
+		"loop_id %d) to d_id %x:%x:%x, loop_id %d", sess,
+		sess->s_id.b.domain, sess->s_id.b.al_pa,
+		sess->s_id.b.area, sess->loop_id, fcport->d_id.b.domain,
+		fcport->d_id.b.al_pa, fcport->d_id.b.area, fcport->loop_id);
+
+	sess->s_id = fcport->d_id;
+	sess->loop_id = fcport->loop_id;
+	sess->conf_compl_supported = fcport->conf_compl_supported;
+
+	res = true;
+
+out_free_fcport:
+	kfree(fcport);
+
+out:
+	return res;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_undelete_sess(struct qla_tgt_sess *sess)
+{
+	BUG_ON(!sess->deleted);
+
+	list_del(&sess->del_list_entry);
+	sess->deleted = 0;
+}
+
+static void qla_tgt_del_sess_work_fn(struct delayed_work *work)
+{
+	struct qla_tgt *tgt = container_of(work, struct qla_tgt,
+					sess_del_work);
+	struct scsi_qla_host *vha = tgt->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	while (!list_empty(&tgt->del_sess_list)) {
+		sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
+				del_list_entry);
+		if (time_after_eq(jiffies, sess->expires)) {
+			bool cancel;
+
+			qla_tgt_undelete_sess(sess);
+
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			cancel = qla_tgt_check_fcport_exist(vha, sess);
+
+			if (cancel) {
+				if (sess->deleted) {
+					/*
+					 * sess was again deleted while we were
+					 * discovering it
+					 */
+					spin_lock_irqsave(&ha->hardware_lock, flags);
+					continue;
+				}
+
+				printk(KERN_INFO "qla_target(%d): cancel deletion of "
+					"session for port %02x:%02x:%02x:%02x:%02x:"
+					"%02x:%02x:%02x (loop ID %d), because it isn't"
+					" deleted by firmware", vha->vp_idx,
+					sess->port_name[0], sess->port_name[1],
+					sess->port_name[2], sess->port_name[3],
+					sess->port_name[4], sess->port_name[5],
+					sess->port_name[6], sess->port_name[7],
+					sess->loop_id);
+			} else {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xe107, "Timeout: sess %p"
+					" about to be deleted\n", sess);
+				ha->tgt_ops->put_sess(sess);
+			}
+
+			spin_lock_irqsave(&ha->hardware_lock, flags);
+		} else {
+			schedule_delayed_work(&tgt->sess_del_work,
+				jiffies - sess->expires);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+/*
+ * Adds an extra ref to allow to drop hw lock after adding sess to the list.
+ * Caller must put it.
+ */
+static struct qla_tgt_sess *qla_tgt_create_sess(
+	struct scsi_qla_host *vha,
+	fc_port_t *fcport,
+	bool local)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess;
+	unsigned long flags;
+	unsigned char be_sid[3];
+
+	/* Check to avoid double sessions */
+#if 0
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
+		if ((sess->port_name[0] == fcport->port_name[0]) &&
+		    (sess->port_name[1] == fcport->port_name[1]) &&
+		    (sess->port_name[2] == fcport->port_name[2]) &&
+		    (sess->port_name[3] == fcport->port_name[3]) &&
+		    (sess->port_name[4] == fcport->port_name[4]) &&
+		    (sess->port_name[5] == fcport->port_name[5]) &&
+		    (sess->port_name[6] == fcport->port_name[6]) &&
+		    (sess->port_name[7] == fcport->port_name[7])) {
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe108, "Double sess %p"
+				" found (s_id %x:%x:%x, "
+				"loop_id %d), updating to d_id %x:%x:%x, "
+				"loop_id %d", sess, sess->s_id.b.domain,
+				sess->s_id.b.al_pa, sess->s_id.b.area,
+				sess->loop_id, fcport->d_id.b.domain,
+				fcport->d_id.b.al_pa, fcport->d_id.b.area,
+				fcport->loop_id)
+
+			if (sess->deleted)
+				qla_tgt_undelete_sess(sess);
+
+			qla_tgt_sess_get(sess);
+			sess->s_id = fcport->d_id;
+			sess->loop_id = fcport->loop_id;
+			sess->conf_compl_supported = fcport->conf_compl_supported;
+			if (sess->local && !local)
+				sess->local = 0;
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			goto out;
+		}
+	}
+	spin_unlock_irq_restore(&ha->hardware_lock, flags);
+#endif
+	/* We are under tgt_mutex, so a new sess can't be added behind us */
+
+	sess = kzalloc(sizeof(*sess), GFP_KERNEL);
+	if (!sess) {
+		printk(KERN_ERR "qla_target(%u): session allocation failed, "
+			"all commands from port %02x:%02x:%02x:%02x:"
+			"%02x:%02x:%02x:%02x will be refused", vha->vp_idx,
+			fcport->port_name[0], fcport->port_name[1],
+			fcport->port_name[2], fcport->port_name[3],
+			fcport->port_name[4], fcport->port_name[5],
+			fcport->port_name[6], fcport->port_name[7]);
+
+		return NULL;
+	}
+	sess->tgt = ha->qla_tgt;
+	sess->vha = vha;
+	sess->s_id = fcport->d_id;
+	sess->loop_id = fcport->loop_id;
+	sess->local = local;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe109, "Adding sess %p to tgt %p via"
+		" ->check_initiator_node_acl()\n", sess, ha->qla_tgt);
+
+	be_sid[0] = sess->s_id.b.domain;
+	be_sid[1] = sess->s_id.b.area;
+	be_sid[2] = sess->s_id.b.al_pa;
+	/*
+	 * Determine if this fc_port->port_name is allowed to access
+	 * target mode using explict NodeACLs+MappedLUNs, or using
+	 * TPG demo mode.  If this is successful a target mode FC nexus
+	 * is created.
+	 */
+	if (ha->tgt_ops->check_initiator_node_acl(vha, &fcport->port_name[0],
+				sess, &be_sid[0], fcport->loop_id) < 0) {
+		kfree(sess);
+		return NULL;
+	}
+	/*
+	 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
+	 * access across ->hardware_lock reaquire.
+	 */
+	kref_get(&sess->se_sess->sess_kref);
+
+	sess->conf_compl_supported = fcport->conf_compl_supported;
+	BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
+	memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	list_add_tail(&sess->sess_list_entry, &ha->qla_tgt->sess_list);
+	ha->qla_tgt->sess_count++;
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	printk(KERN_INFO "qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:"
+		"%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed"
+		" completion %ssupported) added\n", vha->vp_idx, local ?
+		"local " : "", fcport->port_name[0], fcport->port_name[1],
+		fcport->port_name[2], fcport->port_name[3], fcport->port_name[4],
+		fcport->port_name[5], fcport->port_name[6], fcport->port_name[7],
+		fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
+		sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
+
+	return sess;
+}
+
+/*
+ * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
+ */
+void qla_tgt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	struct qla_tgt_sess *sess;
+	unsigned long flags;
+	unsigned char s_id[3];
+
+	if (!vha->hw->tgt_ops)
+		return;
+
+	if (!tgt || (fcport->port_type != FCT_INITIATOR))
+		return;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	if (tgt->tgt_stop) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		return;
+	}
+	sess = qla_tgt_find_sess_by_port_name(tgt, fcport->port_name);
+	if (!sess) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		memset(&s_id, 0, 3);
+		s_id[0] = fcport->d_id.b.domain;
+		s_id[1] = fcport->d_id.b.area;
+		s_id[2] = fcport->d_id.b.al_pa;
+
+		mutex_lock(&ha->tgt_mutex);
+		sess = qla_tgt_create_sess(vha, fcport, false);
+		mutex_unlock(&ha->tgt_mutex);
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+	} else {
+		kref_get(&sess->se_sess->sess_kref);
+
+		if (sess->deleted) {
+			qla_tgt_undelete_sess(sess);
+
+			printk(KERN_INFO "qla_target(%u): %ssession for port %02x:"
+				"%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) "
+				"reappeared\n", vha->vp_idx,
+				sess->local ? "local " : "", sess->port_name[0],
+				sess->port_name[1], sess->port_name[2],
+				sess->port_name[3], sess->port_name[4],
+				sess->port_name[5], sess->port_name[6],
+				sess->port_name[7], sess->loop_id);
+
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10a, "Reappeared sess %p\n", sess);
+		}
+		sess->s_id = fcport->d_id;
+		sess->loop_id = fcport->loop_id;
+		sess->conf_compl_supported = fcport->conf_compl_supported;
+	}
+
+	if (sess && sess->local) {
+		printk(KERN_INFO "qla_target(%u): local session for "
+			"port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
+			"(loop ID %d) became global\n", vha->vp_idx,
+			fcport->port_name[0], fcport->port_name[1],
+			fcport->port_name[2], fcport->port_name[3],
+			fcport->port_name[4], fcport->port_name[5],
+			fcport->port_name[6], fcport->port_name[7],
+			sess->loop_id);
+		sess->local = 0;
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	ha->tgt_ops->put_sess(sess);
+}
+
+void qla_tgt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	struct qla_tgt_sess *sess;
+	unsigned long flags;
+
+	if (!vha->hw->tgt_ops)
+		return;
+
+	if (!tgt || (fcport->port_type != FCT_INITIATOR))
+		return;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	if (tgt->tgt_stop) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		return;
+	}
+	sess = qla_tgt_find_sess_by_port_name(tgt, fcport->port_name);
+	if (!sess) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		return;
+	}
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10b, "qla_tgt_fc_port_deleted %p", sess);
+
+	sess->local = 1;
+	qla_tgt_schedule_sess_for_deletion(sess, false);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static inline int test_tgt_sess_count(struct qla_tgt *tgt)
+{
+	struct qla_hw_data *ha = tgt->ha;
+	unsigned long flags;
+	int res;
+	/*
+	 * We need to protect against race, when tgt is freed before or
+	 * inside wake_up()
+	 */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	ql_dbg(ql_dbg_tgt, tgt->vha, 0xe005, "tgt %p, empty(sess_list)=%d sess_count=%d\n",
+	      tgt, list_empty(&tgt->sess_list), tgt->sess_count);
+	res = (tgt->sess_count == 0);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return res;
+}
+
+/* Called by tcm_qla2xxx configfs code */
+void qla_tgt_stop_phase1(struct qla_tgt *tgt)
+{
+	struct scsi_qla_host *vha = tgt->vha;
+	struct qla_hw_data *ha = tgt->ha;
+	unsigned long flags;
+
+	if (tgt->tgt_stop || tgt->tgt_stopped) {
+		printk(KERN_ERR "Already in tgt->tgt_stop or tgt_stopped state\n");
+		dump_stack();
+		return;
+	}
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe006, "Stopping target for host %ld(%p)\n",
+				vha->host_no, vha);
+	/*
+	 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
+	 * Lock is needed, because we still can get an incoming packet.
+	 */
+	mutex_lock(&ha->tgt_mutex);
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	tgt->tgt_stop = 1;
+	qla_tgt_clear_tgt_db(tgt, true);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	mutex_unlock(&ha->tgt_mutex);
+
+	flush_delayed_work_sync(&tgt->sess_del_work);
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10c, "Waiting for sess works (tgt %p)", tgt);
+	spin_lock_irqsave(&tgt->sess_work_lock, flags);
+	while (!list_empty(&tgt->sess_works_list)) {
+		spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+		flush_scheduled_work();
+		spin_lock_irqsave(&tgt->sess_work_lock, flags);
+	}
+	spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10d, "Waiting for tgt %p: list_empty(sess_list)=%d "
+		"sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
+		tgt->sess_count);
+
+	wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
+
+	/* Big hammer */
+	if (!ha->host_shutting_down && qla_tgt_mode_enabled(vha))
+		qla_tgt_disable_vha(vha);
+
+	/* Wait for sessions to clear out (just in case) */
+	wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
+}
+EXPORT_SYMBOL(qla_tgt_stop_phase1);
+
+/* Called by tcm_qla2xxx configfs code */
+void qla_tgt_stop_phase2(struct qla_tgt *tgt)
+{
+	struct qla_hw_data *ha = tgt->ha;
+	unsigned long flags;
+
+	if (tgt->tgt_stopped) {
+		printk(KERN_ERR "Already in tgt->tgt_stopped state\n");
+		dump_stack();
+		return;
+	}
+
+	ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe10e, "Waiting for %d IRQ commands to"
+		" complete (tgt %p)", tgt->irq_cmd_count, tgt);
+
+	mutex_lock(&ha->tgt_mutex);
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	while (tgt->irq_cmd_count != 0) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		udelay(2);
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+	}
+	tgt->tgt_stop = 0;
+	tgt->tgt_stopped = 1;
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	mutex_unlock(&ha->tgt_mutex);
+
+	ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe10f, "Stop of tgt %p finished", tgt);
+}
+EXPORT_SYMBOL(qla_tgt_stop_phase2);
+
+/* Called from qla_tgt_remove_target() -> qla2x00_remove_one() */
+void qla_tgt_release(struct qla_tgt *tgt)
+{
+	struct qla_hw_data *ha = tgt->ha;
+
+	if ((ha->qla_tgt != NULL) && !tgt->tgt_stopped)
+		qla_tgt_stop_phase2(tgt);
+
+	ha->qla_tgt = NULL;
+
+	ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe110, "Release of tgt %p finished\n", tgt);
+
+	kfree(tgt);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_sched_sess_work(struct qla_tgt *tgt, int type,
+	const void *param, unsigned int param_size)
+{
+	struct qla_tgt_sess_work_param *prm;
+	unsigned long flags;
+
+	prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
+	if (!prm ) {
+		printk(KERN_ERR "qla_target(%d): Unable to create session "
+			"work, command will be refused", 0);
+		return -ENOMEM;
+	}
+
+	ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe111, "Scheduling work (type %d, prm %p)"
+		" to find session for param %p (size %d, tgt %p)\n", type, prm, param,
+		param_size, tgt);
+
+	prm->type = type;
+	memcpy(&prm->tm_iocb, param, param_size);
+
+	spin_lock_irqsave(&tgt->sess_work_lock, flags);
+	if (!tgt->sess_works_pending)
+		tgt->tm_to_unknown = 0;
+	list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
+	tgt->sess_works_pending = 1;
+	spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+	schedule_work(&tgt->sess_work);
+
+	return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_send_notify_ack(struct scsi_qla_host *vha,
+	imm_ntfy_from_isp_t *ntfy,
+	uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
+	uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
+{
+	struct qla_hw_data *ha = vha->hw;
+	request_t *pkt;
+	nack_to_isp_t *nack;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe007, "Sending NOTIFY_ACK (ha=%p)\n", ha);
+
+	/* Send marker if required */
+	if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+		return;
+
+	pkt = (request_t *)qla2x00_req_pkt(vha);
+	if (!pkt) {
+		printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+			"request packet\n", vha->vp_idx, __func__);
+		return;
+	}
+
+	if (ha->qla_tgt != NULL)
+		ha->qla_tgt->notify_ack_expected++;
+
+	pkt->entry_type = NOTIFY_ACK_TYPE;
+	pkt->entry_count = 1;
+
+	nack = (nack_to_isp_t *)pkt;
+	nack->ox_id = ntfy->ox_id;
+
+	nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
+	if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
+		nack->u.isp24.flags = ntfy->u.isp24.flags &
+			__constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
+	}
+	nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
+	nack->u.isp24.status = ntfy->u.isp24.status;
+	nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
+	nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
+	nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
+	nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
+	nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
+	nack->u.isp24.srr_reject_code = srr_reject_code;
+	nack->u.isp24.srr_reject_code_expl = srr_explan;
+	nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
+
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe201,
+		"qla_target(%d): Sending 24xx Notify Ack %d\n",
+		vha->vp_idx, nack->u.isp24.status);
+
+	qla2x00_start_iocbs(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_send_abts_resp(struct scsi_qla_host *vha,
+	abts_recv_from_24xx_t *abts, uint32_t status,
+	bool ids_reversed)
+{
+	struct qla_hw_data *ha = vha->hw;
+	abts_resp_to_24xx_t *resp;
+	uint32_t f_ctl;
+	uint8_t *p;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe008, "Sending task mgmt ABTS response"
+		" (ha=%p, atio=%p, status=%x\n", ha, abts, status);
+
+	/* Send marker if required */
+	if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+		return;
+
+	resp = (abts_resp_to_24xx_t *)qla2x00_req_pkt(vha);
+	if (!resp) {
+		printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+			"request packet", vha->vp_idx, __func__);
+		return;
+	}
+
+	resp->entry_type = ABTS_RESP_24XX;
+	resp->entry_count = 1;
+	resp->nport_handle = abts->nport_handle;
+	resp->vp_index = vha->vp_idx;
+	resp->sof_type = abts->sof_type;
+	resp->exchange_address = abts->exchange_address;
+	resp->fcp_hdr_le = abts->fcp_hdr_le;
+	f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
+			F_CTL_LAST_SEQ | F_CTL_END_SEQ |
+			F_CTL_SEQ_INITIATIVE);
+	p = (uint8_t *)&f_ctl;
+	resp->fcp_hdr_le.f_ctl[0] = *p++;
+	resp->fcp_hdr_le.f_ctl[1] = *p++;
+	resp->fcp_hdr_le.f_ctl[2] = *p;
+	if (ids_reversed) {
+		resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
+		resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
+		resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
+		resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
+		resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
+		resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
+	} else {
+		resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
+		resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
+		resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
+		resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
+		resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
+		resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
+	}
+	resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
+	if (status == FCP_TMF_CMPL) {
+		resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
+		resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
+		resp->payload.ba_acct.low_seq_cnt = 0x0000;
+		resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
+		resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
+		resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
+	} else {
+		resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
+		resp->payload.ba_rjt.reason_code =
+			BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
+		/* Other bytes are zero */
+	}
+
+	ha->qla_tgt->abts_resp_expected++;
+
+	qla2x00_start_iocbs(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
+	abts_resp_from_24xx_fw_t *entry)
+{
+	ctio7_to_24xx_t *ctio;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending retry TERM EXCH CTIO7"
+			" (ha=%p)\n", vha->hw);
+	/* Send marker if required */
+	if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+		return;
+
+	ctio = (ctio7_to_24xx_t *)qla2x00_req_pkt(vha);
+	if (ctio == NULL) {
+		printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+			"request packet\n", vha->vp_idx, __func__);
+		return;
+	}
+
+	/*
+	 * We've got on entrance firmware's response on by us generated
+	 * ABTS response. So, in it ID fields are reversed.
+	 */
+
+	ctio->entry_type = CTIO_TYPE7;
+	ctio->entry_count = 1;
+	ctio->nport_handle = entry->nport_handle;
+	ctio->handle = QLA_TGT_SKIP_HANDLE |	CTIO_COMPLETION_HANDLE_MARK;
+	ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+	ctio->vp_index = vha->vp_idx;
+	ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
+	ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
+	ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
+	ctio->exchange_addr = entry->exchange_addr_to_abort;
+	ctio->u.status1.flags =
+		__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+	ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
+
+	qla2x00_start_iocbs(vha, vha->req);
+
+	qla_tgt_24xx_send_abts_resp(vha, (abts_recv_from_24xx_t *)entry,
+		FCP_TMF_CMPL, true);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qla_tgt_24xx_handle_abts(struct scsi_qla_host *vha,
+	abts_recv_from_24xx_t *abts, struct qla_tgt_sess *sess)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_mgmt_cmd *mcmd;
+	int rc;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe112, "qla_target(%d): task abort (tag=%d)\n",
+		vha->vp_idx, abts->exchange_addr_to_abort);
+
+	mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+	if (mcmd == NULL) {
+		printk(KERN_ERR "qla_target(%d): %s: Allocation of ABORT cmd failed",
+			vha->vp_idx, __func__);
+		return -ENOMEM;
+	}
+	memset(mcmd, 0, sizeof(*mcmd));
+
+	mcmd->sess = sess;
+	memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
+
+	rc = ha->tgt_ops->handle_tmr(mcmd, 0, TMR_ABORT_TASK,
+				abts->exchange_addr_to_abort);
+	if (rc != 0) {
+		printk(KERN_ERR "qla_target(%d):  tgt_ops->handle_tmr()"
+				" failed: %d", vha->vp_idx, rc);
+		mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_handle_abts(struct scsi_qla_host *vha,
+	abts_recv_from_24xx_t *abts)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess;
+	uint32_t tag = abts->exchange_addr_to_abort, s_id;
+	int rc;
+
+	if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
+		printk(KERN_ERR "qla_target(%d): ABTS: Abort Sequence not "
+			"supported\n", vha->vp_idx);
+		qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		return;
+	}
+
+	if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe113, "qla_target(%d): ABTS: Unknown Exchange "
+			"Address received\n", vha->vp_idx);
+		qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		return;
+	}
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe114, "qla_target(%d): task abort (s_id=%x:%x:%x, "
+		"tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
+		abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
+		le32_to_cpu(abts->fcp_hdr_le.parameter));
+
+	memset(&s_id, 0, 3);
+	s_id = (abts->fcp_hdr_le.s_id[0] << 16) | (abts->fcp_hdr_le.s_id[1] << 8) |
+		abts->fcp_hdr_le.s_id[2];
+
+	sess = ha->tgt_ops->find_sess_by_s_id(vha, (unsigned char *)&s_id);
+	if (!sess) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe115, "qla_target(%d): task abort for"
+			" non-existant session\n", vha->vp_idx);
+		rc = qla_tgt_sched_sess_work(ha->qla_tgt, QLA_TGT_SESS_WORK_ABORT,
+					abts, sizeof(*abts));
+		if (rc != 0) {
+			ha->qla_tgt->tm_to_unknown = 1;
+			qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		}
+		return;
+	}
+
+	rc = __qla_tgt_24xx_handle_abts(vha, abts, sess);
+	if (rc != 0) {
+		printk(KERN_ERR "qla_target(%d): __qla_tgt_24xx_handle_abts() failed: %d\n",
+			    vha->vp_idx, rc);
+		qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		return;
+	}
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
+	struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
+{
+	atio_from_isp_t *atio = &mcmd->orig_iocb.atio;
+	ctio7_to_24xx_t *ctio;
+
+	ql_dbg(ql_dbg_tgt, ha, 0xe00a, "Sending task mgmt CTIO7 (ha=%p,"
+		" atio=%p, resp_code=%x\n", ha, atio, resp_code);
+
+	/* Send marker if required */
+	if (qla_tgt_issue_marker(ha, 1) != QLA_SUCCESS)
+		return;
+
+	ctio = (ctio7_to_24xx_t *)qla2x00_req_pkt(ha);
+	if (ctio == NULL) {
+		printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+			"request packet\n", ha->vp_idx, __func__);
+		return;
+	}
+
+	ctio->entry_type = CTIO_TYPE7;
+	ctio->entry_count = 1;
+	ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+	ctio->nport_handle = mcmd->sess->loop_id;
+	ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+	ctio->vp_index = ha->vp_idx;
+	ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+	ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+	ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+	ctio->exchange_addr = atio->u.isp24.exchange_addr;
+	ctio->u.status1.flags = (atio->u.isp24.attr << 9) | __constant_cpu_to_le16(
+		CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
+	ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+	ctio->u.status1.scsi_status = __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
+	ctio->u.status1.response_len = __constant_cpu_to_le16(8);
+	((uint32_t *)ctio->u.status1.sense_data)[0] = cpu_to_be32(resp_code);
+
+	qla2x00_start_iocbs(ha, ha->req);
+}
+
+void qla_tgt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
+{
+	mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+}
+EXPORT_SYMBOL(qla_tgt_free_mcmd);
+
+/* callback from target fabric module code */
+void qla_tgt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
+{
+	struct scsi_qla_host *vha = mcmd->sess->vha;
+	struct qla_hw_data *ha = vha->hw;
+	unsigned long flags;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe116, "TM response mcmd"
+		" (%p) status %#x state %#x", mcmd, mcmd->fc_tm_rsp,
+		mcmd->flags);
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
+		qla_tgt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
+			0, 0, 0, 0, 0, 0);
+	else {
+		if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
+			qla_tgt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
+				mcmd->fc_tm_rsp, false);
+		else
+			qla_tgt_24xx_send_task_mgmt_ctio(vha, mcmd, mcmd->fc_tm_rsp);
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+EXPORT_SYMBOL(qla_tgt_xmit_tm_rsp);
+
+/* No locks */
+static int qla_tgt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
+{
+	struct qla_tgt_cmd *cmd = prm->cmd;
+
+	BUG_ON(cmd->sg_cnt == 0);
+
+	prm->sg = (struct scatterlist *)cmd->sg;
+	prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
+				cmd->sg_cnt, cmd->dma_data_direction);
+	if (unlikely(prm->seg_cnt == 0))
+		goto out_err;
+
+	prm->cmd->sg_mapped = 1;
+
+	/*
+	 * If greater than four sg entries then we need to allocate
+	 * the continuation entries
+	 */
+	if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
+		prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - prm->tgt->datasegs_per_cmd,
+					     prm->tgt->datasegs_per_cont);
+
+	ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe00c, "seg_cnt=%d, req_cnt=%d\n",
+			prm->seg_cnt, prm->req_cnt);
+	return 0;
+
+out_err:
+	printk(KERN_ERR "qla_target(%d): PCI mapping failed: sg_cnt=%d",
+		0, prm->cmd->sg_cnt);
+	return -1;
+}
+
+static inline void qla_tgt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	BUG_ON(!cmd->sg_mapped);
+	pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
+	cmd->sg_mapped = 0;
+}
+
+static int qla_tgt_check_reserve_free_req(struct scsi_qla_host *vha, uint32_t req_cnt)
+{
+	struct qla_hw_data *ha = vha->hw;
+	device_reg_t __iomem *reg = ha->iobase;
+	uint32_t cnt;
+
+	if (vha->req->cnt < (req_cnt + 2)) {
+		cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
+
+		ql_dbg(ql_dbg_tgt, vha, 0xe00d, "Request ring circled: cnt=%d, "
+			"vha->->ring_index=%d, vha->req->cnt=%d, req_cnt=%d\n",
+			cnt, vha->req->ring_index, vha->req->cnt, req_cnt);
+		if  (vha->req->ring_index < cnt)
+			vha->req->cnt = cnt - vha->req->ring_index;
+		else
+			vha->req->cnt = vha->req->length -
+			    (vha->req->ring_index - cnt);
+	}
+
+	if (unlikely(vha->req->cnt < (req_cnt + 2))) {
+		ql_dbg(ql_dbg_tgt, vha, 0xe00e, "qla_target(%d): There is no room in the "
+			"request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
+			"req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
+			vha->req->cnt, req_cnt);
+		return -EAGAIN;
+	}
+	vha->req->cnt -= req_cnt;
+
+	return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static inline void *qla_tgt_get_req_pkt(struct scsi_qla_host *vha)
+{
+	/* Adjust ring index. */
+	vha->req->ring_index++;
+	if (vha->req->ring_index == vha->req->length) {
+		vha->req->ring_index = 0;
+		vha->req->ring_ptr = vha->req->ring;
+	} else {
+		vha->req->ring_ptr++;
+	}
+	return (cont_entry_t *)vha->req->ring_ptr;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static inline uint32_t qla_tgt_make_handle(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	uint32_t h;
+
+	h = ha->current_handle;
+	/* always increment cmd handle */
+	do {
+		++h;
+		if (h > MAX_OUTSTANDING_COMMANDS)
+			h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
+		if (h == ha->current_handle) {
+			printk(KERN_INFO "qla_target(%d): Ran out of "
+				"empty cmd slots in ha %p\n", vha->vp_idx, ha);
+			h = QLA_TGT_NULL_HANDLE;
+			break;
+		}
+	} while ((h == QLA_TGT_NULL_HANDLE) ||
+		 (h == QLA_TGT_SKIP_HANDLE) ||
+		 (ha->cmds[h-1] != NULL));
+
+	if (h != QLA_TGT_NULL_HANDLE)
+		ha->current_handle = h;
+
+	return h;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, struct scsi_qla_host *vha)
+{
+	uint32_t h;
+	ctio7_to_24xx_t *pkt;
+	struct qla_hw_data *ha = vha->hw;
+	atio_from_isp_t *atio = &prm->cmd->atio;
+
+	pkt = (ctio7_to_24xx_t *)vha->req->ring_ptr;
+	prm->pkt = pkt;
+	memset(pkt, 0, sizeof(*pkt));
+
+	pkt->entry_type = CTIO_TYPE7;
+	pkt->entry_count = (uint8_t)prm->req_cnt;
+	pkt->vp_index = vha->vp_idx;
+
+	h = qla_tgt_make_handle(vha);
+	if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
+		/*
+		 * CTIO type 7 from the firmware doesn't provide a way to
+		 * know the initiator's LOOP ID, hence we can't find
+		 * the session and, so, the command.
+		 */
+		return -EAGAIN;
+	} else
+		ha->cmds[h-1] = prm->cmd;
+
+	pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
+	pkt->nport_handle = prm->cmd->loop_id;
+	pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+	pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+	pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+	pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+	pkt->exchange_addr = atio->u.isp24.exchange_addr;
+	pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
+	pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+	pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
+
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe203, "qla_target(%d): handle(cmd) -> %08x, "
+		"timeout %d, ox_id %#x\n", vha->vp_idx, pkt->handle,
+		QLA_TGT_TIMEOUT, le16_to_cpu(pkt->u.status0.ox_id));
+	return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. We have already made sure
+ * that there is sufficient amount of request entries to not drop it.
+ */
+static void qla_tgt_load_cont_data_segments(struct qla_tgt_prm *prm, struct scsi_qla_host *vha)
+{
+	int cnt;
+	uint32_t *dword_ptr;
+	int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
+
+	/* Build continuation packets */
+	while (prm->seg_cnt > 0) {
+		cont_a64_entry_t *cont_pkt64 =
+			(cont_a64_entry_t *)qla_tgt_get_req_pkt(vha);
+
+		/*
+		 * Make sure that from cont_pkt64 none of
+		 * 64-bit specific fields used for 32-bit
+		 * addressing. Cast to (cont_entry_t *) for
+		 * that.
+		 */
+
+		memset(cont_pkt64, 0, sizeof(*cont_pkt64));
+
+		cont_pkt64->entry_count = 1;
+		cont_pkt64->sys_define = 0;
+
+		if (enable_64bit_addressing) {
+			cont_pkt64->entry_type = CONTINUE_A64_TYPE;
+			dword_ptr =
+			    (uint32_t *)&cont_pkt64->dseg_0_address;
+		} else {
+			cont_pkt64->entry_type = CONTINUE_TYPE;
+			dword_ptr =
+			    (uint32_t *)&((cont_entry_t *)
+					    cont_pkt64)->dseg_0_address;
+		}
+
+		/* Load continuation entry data segments */
+		for (cnt = 0;
+		     cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
+		     cnt++, prm->seg_cnt--) {
+			*dword_ptr++ =
+			    cpu_to_le32(pci_dma_lo32
+					(sg_dma_address(prm->sg)));
+			if (enable_64bit_addressing) {
+				*dword_ptr++ =
+				    cpu_to_le32(pci_dma_hi32
+						(sg_dma_address
+						 (prm->sg)));
+			}
+			*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
+
+			ql_dbg(ql_dbg_tgt_sgl, vha, 0xe300, "S/G Segment Cont. phys_addr="
+				"%llx:%llx, len=%d\n",
+			      (long long unsigned int)pci_dma_hi32(sg_dma_address(prm->sg)),
+			      (long long unsigned int)pci_dma_lo32(sg_dma_address(prm->sg)),
+			      (int)sg_dma_len(prm->sg));
+
+			prm->sg = sg_next(prm->sg);
+		}
+	}
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. We have already made sure
+ * that there is sufficient amount of request entries to not drop it.
+ */
+static void qla_tgt_load_data_segments(struct qla_tgt_prm *prm,
+	struct scsi_qla_host *vha)
+{
+	int cnt;
+	uint32_t *dword_ptr;
+	int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
+	ctio7_to_24xx_t *pkt24 = (ctio7_to_24xx_t *)prm->pkt;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe00f,
+		"iocb->scsi_status=%x, iocb->flags=%x\n",
+		le16_to_cpu(pkt24->u.status0.scsi_status),
+		le16_to_cpu(pkt24->u.status0.flags));
+
+	pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
+
+	/* Setup packet address segment pointer */
+	dword_ptr = pkt24->u.status0.dseg_0_address;
+
+	/* Set total data segment count */
+	if (prm->seg_cnt)
+		pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
+
+	if (prm->seg_cnt == 0) {
+		/* No data transfer */
+		*dword_ptr++ = 0;
+		*dword_ptr = 0;
+		return;
+	}
+
+	/* If scatter gather */
+	ql_dbg(ql_dbg_tgt_sgl, vha, 0xe303, "%s", "Building S/G data segments...");
+
+	/* Load command entry data segments */
+	for (cnt = 0;
+	     (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
+	     cnt++, prm->seg_cnt--) {
+		*dword_ptr++ =
+		    cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
+		if (enable_64bit_addressing) {
+			*dword_ptr++ =
+			    cpu_to_le32(pci_dma_hi32(
+					sg_dma_address(prm->sg)));
+		}
+		*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
+
+		ql_dbg(ql_dbg_tgt_sgl, vha, 0xe304, "S/G Segment phys_addr="
+			"%llx:%llx, len=%d\n",
+		      (long long unsigned int)pci_dma_hi32(sg_dma_address(
+								prm->sg)),
+		      (long long unsigned int)pci_dma_lo32(sg_dma_address(
+								prm->sg)),
+		      (int)sg_dma_len(prm->sg));
+
+		prm->sg = sg_next(prm->sg);
+	}
+
+	qla_tgt_load_cont_data_segments(prm, vha);
+}
+
+static inline int qla_tgt_has_data(struct qla_tgt_cmd *cmd)
+{
+	return cmd->bufflen > 0;
+}
+
+/*
+ * Called without ha->hardware_lock held
+ */
+static int qla_tgt_pre_xmit_response(struct qla_tgt_cmd *cmd, struct qla_tgt_prm *prm,
+			int xmit_type, uint8_t scsi_status, uint32_t *full_req_cnt)
+{
+	struct qla_tgt *tgt = cmd->tgt;
+	struct scsi_qla_host *vha = tgt->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct se_cmd *se_cmd = &cmd->se_cmd;
+
+	if (unlikely(cmd->aborted)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe118, "qla_target(%d): terminating exchange "
+			"for aborted cmd=%p (se_cmd=%p, tag=%d)",
+			vha->vp_idx, cmd, se_cmd, cmd->tag);
+
+		cmd->state = QLA_TGT_STATE_ABORTED;
+
+		qla_tgt_send_term_exchange(vha, cmd, &cmd->atio, 0);
+
+		/* !! At this point cmd could be already freed !! */
+		return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
+	}
+
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe205, "qla_target(%d): tag=%u\n", vha->vp_idx, cmd->tag);
+
+	prm->cmd = cmd;
+	prm->tgt = tgt;
+	prm->rq_result = scsi_status;
+	prm->sense_buffer = &cmd->sense_buffer[0];
+	prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
+	prm->sg = NULL;
+	prm->seg_cnt = -1;
+	prm->req_cnt = 1;
+	prm->add_status_pkt = 0;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe010, "rq_result=%x, xmit_type=%x\n",
+				prm->rq_result, xmit_type);
+
+	/* Send marker if required */
+	if (qla_tgt_issue_marker(vha, 0) != QLA_SUCCESS)
+		return -EFAULT;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe011, "CTIO start: vha(%d)\n", vha->vp_idx);
+
+	if ((xmit_type & QLA_TGT_XMIT_DATA) && qla_tgt_has_data(cmd)) {
+		if  (qla_tgt_pci_map_calc_cnt(prm) != 0)
+			return -EAGAIN;
+	}
+
+	*full_req_cnt = prm->req_cnt;
+
+	if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
+		prm->residual = se_cmd->residual_count;
+		ql_dbg(ql_dbg_tgt, vha, 0xe012, "Residual underflow: %d (tag %d, "
+			"op %x, bufflen %d, rq_result %x)\n",
+			prm->residual, cmd->tag,
+			se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
+			cmd->bufflen, prm->rq_result);
+		prm->rq_result |= SS_RESIDUAL_UNDER;
+	} else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
+		prm->residual = se_cmd->residual_count;
+		ql_dbg(ql_dbg_tgt, vha, 0xe013, "Residual overflow: %d (tag %d, "
+			"op %x, bufflen %d, rq_result %x)\n",
+			prm->residual, cmd->tag,
+			se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
+			cmd->bufflen, prm->rq_result);
+		prm->rq_result |= SS_RESIDUAL_OVER;
+	}
+
+	if (xmit_type & QLA_TGT_XMIT_STATUS) {
+		/*
+		 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be ignored
+		 * in *xmit_response() below
+		 */
+		if (qla_tgt_has_data(cmd)) {
+			if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
+			    (IS_FWI2_CAPABLE(ha) &&
+			     (prm->rq_result != 0))) {
+				prm->add_status_pkt = 1;
+				(*full_req_cnt)++;
+			}
+		}
+	}
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe014, "req_cnt=%d, full_req_cnt=%d,"
+		" add_status_pkt=%d\n", prm->req_cnt, *full_req_cnt,
+		prm->add_status_pkt);
+
+	return 0;
+}
+
+static inline int qla_tgt_need_explicit_conf(struct qla_hw_data *ha,
+	struct qla_tgt_cmd *cmd, int sending_sense)
+{
+	if (ha->enable_class_2)
+		return 0;
+
+	if (sending_sense)
+		return cmd->conf_compl_supported;
+	else
+		return ha->enable_explicit_conf && cmd->conf_compl_supported;
+}
+
+#ifdef CONFIG_QLA_TGT_DEBUG_SRR
+/*
+ *  Original taken from the XFS code
+ */
+static unsigned long qla_tgt_srr_random(void)
+{
+	static int Inited;
+	static unsigned long RandomValue;
+	static DEFINE_SPINLOCK(lock);
+	/* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
+	register long rv;
+	register long lo;
+	register long hi;
+	unsigned long flags;
+
+	spin_lock_irqsave(&lock, flags);
+	if (!Inited) {
+		RandomValue = jiffies;
+		Inited = 1;
+	}
+	rv = RandomValue;
+	hi = rv / 127773;
+	lo = rv % 127773;
+	rv = 16807 * lo - 2836 * hi;
+	if (rv <= 0)
+		rv += 2147483647;
+	RandomValue = rv;
+	spin_unlock_irqrestore(&lock, flags);
+	return rv;
+}
+
+static void qla_tgt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
+{
+#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
+	if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qla_tgt_srr_random() % 200) == 50) {
+		*xmit_type &= ~QLA_TGT_XMIT_STATUS;
+		ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe119, "Dropping cmd %p (tag %d) status",
+			cmd, cmd->tag);
+	}
+#endif
+	/*
+	 * It's currently not possible to simulate SRRs for FCP_WRITE without
+	 * a physical link layer failure, so don't even try here..
+	 */
+	if (cmd->dma_data_direction != DMA_FROM_DEVICE)
+		return;
+
+	if (qla_tgt_has_data(cmd) && (cmd->sg_cnt > 1) &&
+	    ((qla_tgt_srr_random() % 100) == 20)) {
+		int i, leave = 0;
+		unsigned int tot_len = 0;
+
+		while (leave == 0)
+			leave = qla_tgt_srr_random() % cmd->sg_cnt;
+
+		for (i = 0; i < leave; i++)
+			tot_len += cmd->sg[i].length;
+
+		ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe11a, "Cutting cmd %p (tag %d) buffer"
+			" tail to len %d, sg_cnt %d (cmd->bufflen %d, cmd->sg_cnt %d)",
+			cmd, cmd->tag, tot_len, leave, cmd->bufflen, cmd->sg_cnt);
+
+		cmd->bufflen = tot_len;
+		cmd->sg_cnt = leave;
+	}
+
+	if (qla_tgt_has_data(cmd) && ((qla_tgt_srr_random() % 100) == 70)) {
+		unsigned int offset = qla_tgt_srr_random() % cmd->bufflen;
+
+		ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe11b, "Cutting cmd %p (tag %d) buffer head "
+			"to offset %d (cmd->bufflen %d)", cmd, cmd->tag,
+			offset, cmd->bufflen);
+		if (offset == 0)
+			*xmit_type &= ~QLA_TGT_XMIT_DATA;
+		else if (qla_tgt_set_data_offset(cmd, offset)) {
+			ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe11c, "qla_tgt_set_data_offset()"
+				" failed (tag %d)", cmd->tag);
+		}
+	}
+}
+#else
+static inline void qla_tgt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) {}
+#endif
+
+static void qla_tgt_24xx_init_ctio_to_isp(ctio7_to_24xx_t *ctio,
+	struct qla_tgt_prm *prm)
+{
+	prm->sense_buffer_len = min((uint32_t)prm->sense_buffer_len,
+				    (uint32_t)sizeof(ctio->u.status1.sense_data));
+	ctio->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
+	if (qla_tgt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
+		ctio->u.status0.flags |= __constant_cpu_to_le16(
+				CTIO7_FLAGS_EXPLICIT_CONFORM |
+				CTIO7_FLAGS_CONFORM_REQ);
+	}
+	ctio->u.status0.residual = cpu_to_le32(prm->residual);
+	ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
+	if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
+		int i;
+
+		if (qla_tgt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
+			if (prm->cmd->se_cmd.scsi_status != 0) {
+				ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe018,
+					"Skipping EXPLICIT_CONFORM and CTIO7_FLAGS_CONFORM_REQ"
+					" for FCP READ w/ non GOOD status\n");
+				goto skip_explict_conf;
+			}
+			ctio->u.status1.flags |= __constant_cpu_to_le16(
+				CTIO7_FLAGS_EXPLICIT_CONFORM |
+				CTIO7_FLAGS_CONFORM_REQ);
+		}
+skip_explict_conf:
+		ctio->u.status1.flags &= ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+		ctio->u.status1.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+		ctio->u.status1.scsi_status |= __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
+		ctio->u.status1.sense_length = cpu_to_le16(prm->sense_buffer_len);
+		for (i = 0; i < prm->sense_buffer_len/4; i++)
+			((uint32_t *)ctio->u.status1.sense_data)[i] =
+				cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
+#if 0
+		if (unlikely((prm->sense_buffer_len % 4) != 0)) {
+			static int q;
+			if (q < 10) {
+				printk(KERN_INFO "qla_target(%d): %d bytes of sense "
+					"lost", prm->tgt->ha->vp_idx,
+					prm->sense_buffer_len % 4);
+				q++;
+			}
+		}
+#endif
+	} else {
+		ctio->u.status1.flags &= ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+		ctio->u.status1.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+		ctio->u.status1.sense_length = 0;
+		memset(ctio->u.status1.sense_data, 0, sizeof(ctio->u.status1.sense_data));
+	}
+
+	/* Sense with len > 24, is it possible ??? */
+}
+
+/*
+ * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * QLA_TGT_XMIT_STATUS
+ * for >= 24xx silicon
+ */
+int qla_tgt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, uint8_t scsi_status)
+{
+	struct scsi_qla_host *vha = cmd->vha;
+	struct qla_hw_data *ha = vha->hw;
+	ctio7_to_24xx_t *pkt;
+	struct qla_tgt_prm prm;
+	uint32_t full_req_cnt = 0;
+	unsigned long flags = 0;
+	int res;
+
+	memset(&prm, 0, sizeof(prm));
+	qla_tgt_check_srr_debug(cmd, &xmit_type);
+
+	ql_dbg(ql_dbg_tgt, cmd->vha, 0xe017, "is_send_status=%d,"
+		" cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d",
+		(xmit_type & QLA_TGT_XMIT_STATUS) ? 1 : 0, cmd->bufflen,
+		cmd->sg_cnt, cmd->dma_data_direction);
+
+	res = qla_tgt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, &full_req_cnt);
+	if (unlikely(res != 0)) {
+		if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
+			return 0;
+
+		return res;
+	}
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+        /* Does F/W have an IOCBs for this request */
+	res = qla_tgt_check_reserve_free_req(vha, full_req_cnt);
+	if (unlikely(res))
+		goto out_unmap_unlock;
+
+	res = qla_tgt_24xx_build_ctio_pkt(&prm, vha);
+	if (unlikely(res != 0))
+		goto out_unmap_unlock;
+
+
+	pkt = (ctio7_to_24xx_t *)prm.pkt;
+
+	if (qla_tgt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
+		pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
+				CTIO7_FLAGS_STATUS_MODE_0);
+
+		qla_tgt_load_data_segments(&prm, vha);
+
+		if (prm.add_status_pkt == 0) {
+			if (xmit_type & QLA_TGT_XMIT_STATUS) {
+				pkt->u.status0.scsi_status = cpu_to_le16(prm.rq_result);
+				pkt->u.status0.residual = cpu_to_le32(prm.residual);
+				pkt->u.status0.flags |= __constant_cpu_to_le16(
+						CTIO7_FLAGS_SEND_STATUS);
+				if (qla_tgt_need_explicit_conf(ha, cmd, 0)) {
+					pkt->u.status0.flags |= __constant_cpu_to_le16(
+						CTIO7_FLAGS_EXPLICIT_CONFORM |
+						CTIO7_FLAGS_CONFORM_REQ);
+				}
+			}
+
+		} else {
+			/*
+			 * We have already made sure that there is sufficient
+			 * amount of request entries to not drop HW lock in
+			 * req_pkt().
+			 */
+			ctio7_to_24xx_t *ctio =
+				(ctio7_to_24xx_t *)qla_tgt_get_req_pkt(vha);
+
+			ql_dbg(ql_dbg_tgt, vha, 0xe019, "Building additional"
+					" status packet\n");
+
+			memcpy(ctio, pkt, sizeof(*ctio));
+			ctio->entry_count = 1;
+			ctio->dseg_count = 0;
+			ctio->u.status1.flags &= ~__constant_cpu_to_le16(
+						CTIO7_FLAGS_DATA_IN);
+
+			/* Real finish is ctio_m1's finish */
+			pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
+			pkt->u.status0.flags |= __constant_cpu_to_le16(
+					CTIO7_FLAGS_DONT_RET_CTIO);
+			qla_tgt_24xx_init_ctio_to_isp((ctio7_to_24xx_t *)ctio,
+							&prm);
+			printk("Status CTIO7: %p\n", ctio);
+		}
+	} else
+		qla_tgt_24xx_init_ctio_to_isp(pkt, &prm);
+
+
+	cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe01a, "Xmitting CTIO7 response pkt for 24xx:"
+			" %p scsi_status: 0x%02x\n", pkt, scsi_status);
+
+	qla2x00_start_iocbs(vha, vha->req);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return 0;
+
+out_unmap_unlock:
+	if (cmd->sg_mapped)
+		qla_tgt_unmap_sg(vha, cmd);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(qla_tgt_xmit_response);
+
+int qla_tgt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
+{
+	ctio7_to_24xx_t *pkt;
+	struct scsi_qla_host *vha = cmd->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = cmd->tgt;
+	struct qla_tgt_prm prm;
+	unsigned long flags;
+	int res = 0;
+
+	memset(&prm, 0, sizeof(prm));
+	prm.cmd = cmd;
+	prm.tgt = tgt;
+	prm.sg = NULL;
+	prm.req_cnt = 1;
+
+	/* Send marker if required */
+	if (qla_tgt_issue_marker(vha, 0) != QLA_SUCCESS)
+		return -EIO;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)", (int)vha->vp_idx);
+
+	/* Calculate number of entries and segments required */
+	if (qla_tgt_pci_map_calc_cnt(&prm) != 0)
+		return -EAGAIN;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	/* Does F/W have an IOCBs for this request */
+	res = qla_tgt_check_reserve_free_req(vha, prm.req_cnt);
+	if (res != 0)
+		goto out_unlock_free_unmap;
+
+	res = qla_tgt_24xx_build_ctio_pkt(&prm, vha);
+	if (unlikely(res != 0))
+		goto out_unlock_free_unmap;
+	pkt = (ctio7_to_24xx_t *)prm.pkt;
+	pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
+			CTIO7_FLAGS_STATUS_MODE_0);
+	qla_tgt_load_data_segments(&prm, vha);
+
+	cmd->state = QLA_TGT_STATE_NEED_DATA;
+
+	qla2x00_start_iocbs(vha, vha->req);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return res;
+
+out_unlock_free_unmap:
+	if (cmd->sg_mapped)
+		qla_tgt_unmap_sg(vha, cmd);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(qla_tgt_rdy_to_xfer);
+
+/* If hardware_lock held on entry, might drop it, then reaquire */
+/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
+static int __qla_tgt_send_term_exchange(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+	atio_from_isp_t *atio)
+{
+	ctio7_to_24xx_t *ctio24;
+	struct qla_hw_data *ha = vha->hw;
+	request_t *pkt;
+	int ret = 0;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
+
+	pkt = (request_t *)qla2x00_req_pkt(vha);
+	if (pkt == NULL) {
+		printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+			"request packet\n", vha->vp_idx, __func__);
+		return -ENOMEM;
+	}
+
+	if (cmd != NULL) {
+		if (cmd->state < QLA_TGT_STATE_PROCESSED) {
+			printk(KERN_ERR "qla_target(%d): Terminating cmd %p with "
+				"incorrect state %d\n", vha->vp_idx, cmd,
+				cmd->state);
+		} else
+			ret = 1;
+	}
+
+	pkt->entry_count = 1;
+	pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+	ctio24 = (ctio7_to_24xx_t *)pkt;
+	ctio24->entry_type = CTIO_TYPE7;
+	ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
+	ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+	ctio24->vp_index = vha->vp_idx;
+	ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+	ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+	ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+	ctio24->exchange_addr = atio->u.isp24.exchange_addr;
+	ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | __constant_cpu_to_le16(
+		CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+	ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+
+	/* Most likely, it isn't needed */
+	ctio24->u.status1.residual = get_unaligned((uint32_t *)
+		&atio->u.isp24.fcp_cmnd.add_cdb[atio->u.isp24.fcp_cmnd.add_cdb_len]);
+	if (ctio24->u.status1.residual != 0)
+		ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
+
+	qla2x00_start_iocbs(vha, vha->req);
+	return ret;
+}
+
+static void qla_tgt_send_term_exchange(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+        atio_from_isp_t *atio, int ha_locked)
+{
+	unsigned long flags;
+	int rc;
+
+	if (qla_tgt_issue_marker(vha, ha_locked) < 0)
+		return;
+
+	if (ha_locked) {
+		rc = __qla_tgt_send_term_exchange(vha, cmd, atio);
+		goto done;
+	}
+	spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+	rc = __qla_tgt_send_term_exchange(vha, cmd, atio);
+	spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+done:
+	if (rc == 1) {
+		if (!ha_locked && !in_interrupt())
+			msleep(250); /* just in case */
+
+		vha->hw->tgt_ops->free_cmd(cmd);
+	}
+}
+
+void qla_tgt_free_cmd(struct qla_tgt_cmd *cmd)
+{
+	BUG_ON(cmd->sg_mapped);
+
+	if (unlikely(cmd->free_sg))
+		kfree(cmd->sg);
+	kmem_cache_free(qla_tgt_cmd_cachep, cmd);
+}
+EXPORT_SYMBOL(qla_tgt_free_cmd);
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_prepare_srr_ctio(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+	void *ctio)
+{
+	struct qla_tgt_srr_ctio *sc;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	struct qla_tgt_srr_imm *imm;
+
+	tgt->ctio_srr_id++;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe11d, "qla_target(%d): CTIO with SRR "
+		"status received\n", vha->vp_idx);
+
+	if (!ctio) {
+		printk(KERN_ERR "qla_target(%d): SRR CTIO, "
+			"but ctio is NULL\n", vha->vp_idx);
+		return EINVAL;
+	}
+
+	sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
+	if (sc != NULL) {
+		sc->cmd = cmd;
+		/* IRQ is already OFF */
+		spin_lock(&tgt->srr_lock);
+		sc->srr_id = tgt->ctio_srr_id;
+		list_add_tail(&sc->srr_list_entry,
+			&tgt->srr_ctio_list);
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe11e, "CTIO SRR %p added (id %d)\n",
+			sc, sc->srr_id);
+		if (tgt->imm_srr_id == tgt->ctio_srr_id) {
+			int found = 0;
+			list_for_each_entry(imm, &tgt->srr_imm_list,
+					srr_list_entry) {
+				if (imm->srr_id == sc->srr_id) {
+					found = 1;
+					break;
+				}
+			}
+			if (found) {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xe11f,
+					"Scheduling srr work\n");
+				schedule_work(&tgt->srr_work);
+			} else {
+				printk(KERN_ERR "qla_target(%d): imm_srr_id "
+					"== ctio_srr_id (%d), but there is no "
+					"corresponding SRR IMM, deleting CTIO "
+					"SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
+					sc);
+				list_del(&sc->srr_list_entry);
+				spin_unlock(&tgt->srr_lock);
+
+				kfree(sc);
+				return -EINVAL;
+			}
+		}
+		spin_unlock(&tgt->srr_lock);
+	} else {
+		struct qla_tgt_srr_imm *ti;
+
+		printk(KERN_ERR "qla_target(%d): Unable to allocate SRR CTIO entry\n",
+			vha->vp_idx);
+		spin_lock(&tgt->srr_lock);
+		list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
+					srr_list_entry) {
+			if (imm->srr_id == tgt->ctio_srr_id) {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xe120, "IMM SRR %p"
+					" deleted (id %d)\n", imm, imm->srr_id);
+				list_del(&imm->srr_list_entry);
+				qla_tgt_reject_free_srr_imm(vha, imm, 1);
+			}
+		}
+		spin_unlock(&tgt->srr_lock);
+
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static int qla_tgt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
+	struct qla_tgt_cmd *cmd, uint32_t status)
+{
+	int term = 0;
+
+	if (ctio != NULL) {
+		ctio7_from_24xx_t *c = (ctio7_from_24xx_t *)ctio;
+		term = !(c->flags &
+			__constant_cpu_to_le16(OF_TERM_EXCH));
+	} else
+		term = 1;
+
+	if (term)
+		qla_tgt_send_term_exchange(vha, cmd, &cmd->atio, 1);
+
+	return term;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static inline struct qla_tgt_cmd *qla_tgt_get_cmd(struct scsi_qla_host *vha, uint32_t handle)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	handle--;
+	if (ha->cmds[handle] != NULL) {
+		struct qla_tgt_cmd *cmd = ha->cmds[handle];
+		ha->cmds[handle] = NULL;
+		return cmd;
+	} else
+		return NULL;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static struct qla_tgt_cmd *qla_tgt_ctio_to_cmd(struct scsi_qla_host *vha, uint32_t handle,
+	void *ctio)
+{
+	struct qla_tgt_cmd *cmd = NULL;
+
+	/* Clear out internal marks */
+	handle &= ~(CTIO_COMPLETION_HANDLE_MARK | CTIO_INTERMEDIATE_HANDLE_MARK);
+
+	if (handle != QLA_TGT_NULL_HANDLE) {
+		if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
+			ql_dbg(ql_dbg_tgt, vha, 0xe01e, "%s", "SKIP_HANDLE CTIO\n");
+			return NULL;
+		}
+		/* handle-1 is actually used */
+		if (unlikely(handle > MAX_OUTSTANDING_COMMANDS)) {
+			printk(KERN_ERR "qla_target(%d): Wrong handle %x "
+				"received\n", vha->vp_idx, handle);
+			return NULL;
+		}
+		cmd = qla_tgt_get_cmd(vha, handle);
+		if (unlikely(cmd == NULL)) {
+			printk(KERN_WARNING "qla_target(%d): Suspicious: unable to "
+				   "find the command with handle %x\n",
+				   vha->vp_idx, handle);
+			return NULL;
+		}
+	} else if (ctio != NULL) {
+		/* We can't get loop ID from CTIO7 */
+		printk(KERN_ERR "qla_target(%d): Wrong CTIO received: "
+			"QLA24xx doesn't support NULL handles\n",
+			vha->vp_idx);
+		return NULL;
+	}
+
+	return cmd;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
+	uint32_t status, void *ctio)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct se_cmd *se_cmd;
+	struct target_core_fabric_ops *tfo;
+	struct qla_tgt_cmd *cmd;
+
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe206, "qla_target(%d): handle(ctio %p status"
+		" %#x) <- %08x\n", vha->vp_idx, ctio, status, handle);
+
+	if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
+		/* That could happen only in case of an error/reset/abort */
+		if (status != CTIO_SUCCESS) {
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe121, "Intermediate CTIO received"
+				" (status %x)\n", status);
+		}
+		return;
+	}
+
+	cmd = qla_tgt_ctio_to_cmd(vha, handle, ctio);
+	if (cmd == NULL) {
+		if (status != CTIO_SUCCESS)
+			qla_tgt_term_ctio_exchange(vha, ctio, NULL, status);
+		return;
+	}
+	se_cmd = &cmd->se_cmd;
+	tfo = se_cmd->se_tfo;
+
+	if (cmd->sg_mapped)
+		qla_tgt_unmap_sg(vha, cmd);
+
+	if (unlikely(status != CTIO_SUCCESS)) {
+		switch (status & 0xFFFF) {
+		case CTIO_LIP_RESET:
+		case CTIO_TARGET_RESET:
+		case CTIO_ABORTED:
+		case CTIO_TIMEOUT:
+		case CTIO_INVALID_RX_ID:
+			/* They are OK */
+			printk(KERN_INFO "qla_target(%d): CTIO with "
+				"status %#x received, state %x, se_cmd %p, "
+				"(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
+				"TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
+				status, cmd->state, se_cmd);
+			break;
+
+		case CTIO_PORT_LOGGED_OUT:
+		case CTIO_PORT_UNAVAILABLE:
+			printk(KERN_INFO "qla_target(%d): CTIO with PORT LOGGED "
+				"OUT (29) or PORT UNAVAILABLE (28) status %x "
+				"received (state %x, se_cmd %p)\n",
+				vha->vp_idx, status, cmd->state, se_cmd);
+			break;
+
+		case CTIO_SRR_RECEIVED:
+			printk(KERN_INFO "qla_target(%d): CTIO with SRR_RECEIVED"
+				" status %x received (state %x, se_cmd %p)\n",
+				vha->vp_idx, status, cmd->state, se_cmd);
+			if (qla_tgt_prepare_srr_ctio(vha, cmd, ctio) != 0)
+				break;
+			else
+				return;
+
+		default:
+			printk(KERN_ERR "qla_target(%d): CTIO with error status "
+				"0x%x received (state %x, se_cmd %p\n",
+				vha->vp_idx, status, cmd->state, se_cmd);
+			break;
+		}
+
+		if (cmd->state != QLA_TGT_STATE_NEED_DATA)
+			if (qla_tgt_term_ctio_exchange(vha, ctio, cmd, status))
+				return;
+	}
+
+	if (cmd->state == QLA_TGT_STATE_PROCESSED) {
+		ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
+	} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
+		int rx_status = 0;
+
+		cmd->state = QLA_TGT_STATE_DATA_IN;
+
+		if (unlikely(status != CTIO_SUCCESS))
+			rx_status = -EIO;
+		else
+			cmd->write_data_transferred = 1;
+
+		ql_dbg(ql_dbg_tgt, vha, 0xe020, "Data received, context %x,"
+				" rx_status %d\n", 0x0, rx_status);
+
+		ha->tgt_ops->handle_data(cmd);
+		return;
+	} else if (cmd->state == QLA_TGT_STATE_ABORTED) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe122, "Aborted command %p (tag %d) finished\n",
+				cmd, cmd->tag);
+	} else {
+		printk(KERN_ERR "qla_target(%d): A command in state (%d) should "
+			"not return a CTIO complete\n", vha->vp_idx, cmd->state);
+	}
+
+	if (unlikely(status != CTIO_SUCCESS)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe123, "Finishing failed CTIO\n");
+		dump_stack();
+	}
+
+	ha->tgt_ops->free_cmd(cmd);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+void qla_tgt_ctio_completion(struct scsi_qla_host *vha, uint32_t handle)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+
+	if (likely(tgt == NULL)) {
+		ql_dbg(ql_dbg_tgt, vha, 0xe021, "CTIO, but target mode not enabled"
+			" (ha %d %p handle %#x)", vha->vp_idx, ha, handle);
+		return;
+	}
+
+	tgt->irq_cmd_count++;
+	qla_tgt_do_ctio_completion(vha, handle, CTIO_SUCCESS, NULL);
+	tgt->irq_cmd_count--;
+}
+
+static inline int qla_tgt_get_fcp_task_attr(uint8_t task_codes)
+{
+	int fcp_task_attr;
+
+	switch (task_codes) {
+        case ATIO_SIMPLE_QUEUE:
+                fcp_task_attr = MSG_SIMPLE_TAG;
+                break;
+        case ATIO_HEAD_OF_QUEUE:
+                fcp_task_attr = MSG_HEAD_TAG;
+                break;
+        case ATIO_ORDERED_QUEUE:
+                fcp_task_attr = MSG_ORDERED_TAG;
+                break;
+        case ATIO_ACA_QUEUE:
+		fcp_task_attr = MSG_ACA_TAG;
+		break;
+        case ATIO_UNTAGGED:
+                fcp_task_attr = MSG_SIMPLE_TAG;
+                break;
+        default:
+                printk(KERN_WARNING "qla_target: unknown task code %x, use "
+                        "ORDERED instead\n", task_codes);
+                fcp_task_attr = MSG_ORDERED_TAG;
+                break;
+        }
+
+	return fcp_task_attr;
+}
+
+static struct qla_tgt_sess *qla_tgt_make_local_sess(struct scsi_qla_host *,
+					uint8_t *, uint16_t);
+/*
+ * Process context for I/O path into tcm_qla2xxx code
+ */
+static void qla_tgt_do_work(struct work_struct *work)
+{
+	struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+	scsi_qla_host_t *vha = cmd->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	struct qla_tgt_sess *sess = cmd->sess;
+	atio_from_isp_t *atio = &cmd->atio;
+	unsigned char *cdb;
+	unsigned long flags;
+	uint32_t data_length;
+	int ret, fcp_task_attr, data_dir, bidi = 0;;
+
+	if (tgt->tgt_stop)
+		goto out_term;
+
+	if (!sess) {
+		uint8_t *s_id = NULL;
+		uint16_t loop_id = 0;
+
+		s_id = atio->u.isp24.fcp_hdr.s_id;
+
+		mutex_lock(&ha->tgt_mutex);
+		cmd->sess = sess = qla_tgt_make_local_sess(vha, s_id, loop_id);
+		/* sess has got an extra creation ref */
+		mutex_unlock(&ha->tgt_mutex);
+
+		if (!sess)
+			goto out_term;
+		cmd->loop_id = sess->loop_id;
+	}
+
+	if (tgt->tgt_stop)
+		goto out_term;
+
+	cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
+	cmd->tag = atio->u.isp24.exchange_addr;
+	cmd->unpacked_lun = scsilun_to_int(
+			(struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
+
+	if (atio->u.isp24.fcp_cmnd.rddata &&
+	    atio->u.isp24.fcp_cmnd.wrdata) {
+		bidi = 1;
+		data_dir = DMA_TO_DEVICE;
+	} else if (atio->u.isp24.fcp_cmnd.rddata)
+		data_dir = DMA_FROM_DEVICE;
+	else if (atio->u.isp24.fcp_cmnd.wrdata)
+		data_dir = DMA_TO_DEVICE;
+	else
+		data_dir = DMA_NONE;
+
+	fcp_task_attr = qla_tgt_get_fcp_task_attr(
+			atio->u.isp24.fcp_cmnd.task_attr);
+	data_length = be32_to_cpu(get_unaligned((uint32_t *)
+			&atio->u.isp24.fcp_cmnd.add_cdb[
+				atio->u.isp24.fcp_cmnd.add_cdb_len]));
+
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe207, "qla_target: START qla command: %p"
+		" lun: 0x%04x (tag %d)\n", cmd, cmd->unpacked_lun, cmd->tag);
+
+	ret = vha->hw->tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
+			fcp_task_attr, data_dir, bidi);
+	if (ret != 0)
+		goto out_term;
+	/*
+	 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
+	 */
+	ha->tgt_ops->put_sess(sess);
+	return;
+
+out_term:
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe14d, "Terminating work cmd %p", cmd);
+	/*
+	 * cmd has not sent to target yet, so pass NULL as the second argument
+	 */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	qla_tgt_send_term_exchange(vha, NULL, &cmd->atio, 1);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	if (sess)
+		ha->tgt_ops->put_sess(sess);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_handle_cmd_for_atio(struct scsi_qla_host *vha,
+	atio_from_isp_t *atio)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	struct qla_tgt_sess *sess;
+	struct qla_tgt_cmd *cmd;
+	int res = 0;
+
+	if (unlikely(tgt->tgt_stop)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe124, "New command while device %p"
+			" is shutting down\n", tgt);
+		return -EFAULT;
+	}
+
+	cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
+	if (!cmd) {
+		printk(KERN_INFO "qla_target(%d): Allocation of cmd "
+			"failed\n", vha->vp_idx);
+		return -ENOMEM;
+	}
+
+	INIT_LIST_HEAD(&cmd->cmd_list);
+
+	memcpy(&cmd->atio, atio, sizeof(*atio));
+	cmd->state = QLA_TGT_STATE_NEW;
+	cmd->tgt = ha->qla_tgt;
+	cmd->vha = vha;
+
+	sess = ha->tgt_ops->find_sess_by_s_id(vha,
+				atio->u.isp24.fcp_hdr.s_id);
+	if (unlikely(!sess)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe125, "qla_target(%d):"
+			" Unable to find wwn login (s_id %x:%x:%x),"
+			" trying to create it manually\n", vha->vp_idx,
+			atio->u.isp24.fcp_hdr.s_id[0],
+			atio->u.isp24.fcp_hdr.s_id[1],
+			atio->u.isp24.fcp_hdr.s_id[2]);
+
+		if (atio->u.raw.entry_count > 1) {
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe127, "Dropping multy entry"
+					" cmd %p\n", cmd);
+			goto out_free_cmd;
+		}
+		goto out_sched;
+	}
+
+	if (sess->tearing_down || tgt->tgt_stop)
+		goto out_free_cmd;
+
+	cmd->sess = sess;
+	cmd->loop_id = sess->loop_id;
+	cmd->conf_compl_supported = sess->conf_compl_supported;
+	/*
+	 * Get the extra kref_get() before dropping qla_hw_data->hardware_lock,
+	 * and call kref_put() in qla_tgt_do_work() process context to drop the
+	 * extra reference.
+	*/
+	kref_get(&sess->se_sess->sess_kref);
+
+out_sched:
+	INIT_WORK(&cmd->work, qla_tgt_do_work);
+	queue_work(qla_tgt_wq, &cmd->work);
+	return 0;
+
+out_free_cmd:
+	qla_tgt_free_cmd(cmd);
+	return res;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
+	int fn, void *iocb, int flags)
+{
+	struct scsi_qla_host *vha = sess->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_mgmt_cmd *mcmd;
+	int res;
+	uint8_t tmr_func;
+
+	mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+	if (!mcmd) {
+		printk(KERN_ERR "qla_target(%d): Allocation of management "
+			"command failed, some commands and their data could "
+			"leak\n", vha->vp_idx);
+		return -ENOMEM;
+	}
+	memset(mcmd, 0, sizeof(*mcmd));
+	mcmd->sess = sess;
+
+	if (iocb) {
+		memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
+			sizeof(mcmd->orig_iocb.imm_ntfy));
+	}
+	mcmd->tmr_func = fn;
+	mcmd->flags = flags;
+
+	switch (fn) {
+	case QLA_TGT_CLEAR_ACA:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe400, "qla_target(%d): CLEAR_ACA received\n",
+			sess->vha->vp_idx);
+		tmr_func = TMR_CLEAR_ACA;
+		break;
+
+	case QLA_TGT_TARGET_RESET:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe401, "qla_target(%d): TARGET_RESET received\n",
+			sess->vha->vp_idx);
+		tmr_func = TMR_TARGET_WARM_RESET;
+		break;
+
+	case QLA_TGT_LUN_RESET:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe402, "qla_target(%d): LUN_RESET received\n",
+			sess->vha->vp_idx);
+		tmr_func = TMR_LUN_RESET;
+		break;
+
+	case QLA_TGT_CLEAR_TS:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe403, "qla_target(%d): CLEAR_TS received\n",
+			sess->vha->vp_idx);
+		tmr_func = TMR_CLEAR_TASK_SET;
+		break;
+
+	case QLA_TGT_ABORT_TS:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe405, "qla_target(%d): ABORT_TS received\n",
+			sess->vha->vp_idx);
+		tmr_func = TMR_ABORT_TASK_SET;
+		break;
+#if 0
+	case QLA_TGT_ABORT_ALL:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe406, "qla_target(%d): Doing ABORT_ALL_TASKS\n",
+			sess->vha->vp_idx);
+		tmr_func = 0;
+		break;
+
+	case QLA_TGT_ABORT_ALL_SESS:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe407, "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
+			sess->vha->vp_idx);
+		tmr_func = 0;
+		break;
+
+	case QLA_TGT_NEXUS_LOSS_SESS:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe408, "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
+			sess->vha->vp_idx);
+		tmr_func = 0;
+		break;
+
+	case QLA_TGT_NEXUS_LOSS:
+		ql_dbg(ql_dbg_tgt_tmr, vha, 0xe409, "qla_target(%d): Doing NEXUS_LOSS\n",
+			sess->vha->vp_idx));
+		tmr_func = 0;
+		break;
+#endif
+	default:
+		printk(KERN_ERR "qla_target(%d): Unknown task mgmt fn 0x%x\n",
+			    sess->vha->vp_idx, fn);
+		mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+		return -ENOSYS;
+	}
+
+	res = ha->tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
+	if (res != 0) {
+		printk(KERN_ERR "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
+			    sess->vha->vp_idx, res);
+		mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
+{
+	atio_from_isp_t *a = (atio_from_isp_t *)iocb;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt;
+	struct qla_tgt_sess *sess;
+	uint32_t lun, unpacked_lun;
+	int lun_size, fn, res = 0;
+
+	tgt = ha->qla_tgt;
+
+	lun = a->u.isp24.fcp_cmnd.lun;
+	lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
+	fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
+	sess = ha->tgt_ops->find_sess_by_s_id(vha,
+				a->u.isp24.fcp_hdr.s_id);
+	unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+	if (!sess) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe128, "qla_target(%d): task mgmt fn 0x%x for "
+			"non-existant session\n", vha->vp_idx, fn);
+		res = qla_tgt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
+			sizeof(atio_from_isp_t));
+		if (res != 0)
+			tgt->tm_to_unknown = 1;
+
+		return res;
+	}
+
+	return qla_tgt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qla_tgt_abort_task(struct scsi_qla_host *vha,
+	imm_ntfy_from_isp_t *iocb, struct qla_tgt_sess *sess)
+{
+	atio_from_isp_t *a = (atio_from_isp_t *)iocb;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_mgmt_cmd *mcmd;
+	uint32_t lun, unpacked_lun;
+	int rc;
+
+	mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+	if (mcmd == NULL) {
+		printk(KERN_ERR "qla_target(%d): %s: Allocation of ABORT"
+			" cmd failed\n", vha->vp_idx, __func__);
+		return -ENOMEM;
+	}
+	memset(mcmd, 0, sizeof(*mcmd));
+
+	mcmd->sess = sess;
+	memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, sizeof(mcmd->orig_iocb.imm_ntfy));
+
+	lun = a->u.isp24.fcp_cmnd.lun;
+	unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+	rc = ha->tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
+				le16_to_cpu(iocb->u.isp2x.seq_id));
+	if (rc != 0) {
+		printk(KERN_ERR "qla_target(%d): tgt_ops->handle_tmr()"
+			" failed: %d\n", vha->vp_idx, rc);
+		mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_abort_task(struct scsi_qla_host *vha, imm_ntfy_from_isp_t *iocb)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess;
+	int loop_id, res;
+
+	loop_id = GET_TARGET_ID(ha, (atio_from_isp_t *)iocb);
+
+	sess = ha->tgt_ops->find_sess_by_loop_id(vha, loop_id);
+	if (sess == NULL) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe129, "qla_target(%d): task abort for unexisting "
+			"session\n", vha->vp_idx);
+		res = qla_tgt_sched_sess_work(sess->tgt, QLA_TGT_SESS_WORK_ABORT,
+					iocb, sizeof(*iocb));
+		if (res != 0)
+			sess->tgt->tm_to_unknown = 1;
+
+		return res;
+	}
+
+	return __qla_tgt_abort_task(vha, iocb, sess);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static int qla_tgt_24xx_handle_els(struct scsi_qla_host *vha,
+	imm_ntfy_from_isp_t *iocb)
+{
+	struct qla_hw_data *ha = vha->hw;
+	int res = 0;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe12a, "qla_target(%d): Port ID: 0x%02x:%02x:%02x"
+		" ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0],
+		iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2],
+		iocb->u.isp24.status_subcode);
+
+	switch (iocb->u.isp24.status_subcode) {
+	case ELS_PLOGI:
+	case ELS_FLOGI:
+	case ELS_PRLI:
+	case ELS_LOGO:
+	case ELS_PRLO:
+		res = qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+		break;
+	case ELS_PDISC:
+	case ELS_ADISC:
+	{
+		struct qla_tgt *tgt = ha->qla_tgt;
+		if (tgt->link_reinit_iocb_pending) {
+			qla_tgt_send_notify_ack(vha, &tgt->link_reinit_iocb,
+				0, 0, 0, 0, 0, 0);
+			tgt->link_reinit_iocb_pending = 0;
+		}
+		res = 1; /* send notify ack */
+		break;
+	}
+
+	default:
+		printk(KERN_ERR "qla_target(%d): Unsupported ELS command %x "
+			"received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
+		res = qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+		break;
+	}
+
+	return res;
+}
+
+static int qla_tgt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
+{
+	struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
+	size_t first_offset = 0, rem_offset = offset, tmp = 0;
+	int i, sg_srr_cnt, bufflen = 0;
+
+	ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe305, "Entering qla_tgt_set_data_offset:"
+		" cmd: %p, cmd->sg: %p, cmd->sg_cnt: %u, direction: %d\n",
+		cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
+
+	/*
+	 * FIXME: Reject non zero SRR relative offset until we can test
+	 * this code properly.
+	 */
+	printk("Rejecting non zero SRR rel_offs: %u\n", offset);
+	return -1;
+
+	if (!cmd->sg || !cmd->sg_cnt) {
+		printk(KERN_ERR "Missing cmd->sg or zero cmd->sg_cnt in"
+				" qla_tgt_set_data_offset\n");
+		return -EINVAL;
+	}
+	/*
+	 * Walk the current cmd->sg list until we locate the new sg_srr_start
+	 */
+	for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
+		ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe306, "sg[%d]: %p page: %p,"
+			" length: %d, offset: %d\n", i, sg, sg_page(sg),
+			sg->length, sg->offset);
+
+		if ((sg->length + tmp) > offset) {
+			first_offset = rem_offset;
+			sg_srr_start = sg;
+			ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe307, "Found matching sg[%d],"
+				" using %p as sg_srr_start, and using first_offset:"
+				" %lu\n", i, sg, first_offset);
+			break;
+		}
+		tmp += sg->length;
+		rem_offset -= sg->length;
+	}
+
+	if (!sg_srr_start) {
+		printk(KERN_ERR "Unable to locate sg_srr_start for offset: %u\n", offset);
+		return -EINVAL;
+	}
+	sg_srr_cnt = (cmd->sg_cnt - i);
+
+	sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
+	if (!sg_srr) {
+		printk(KERN_ERR "Unable to allocate sgp\n");
+		return -ENOMEM;
+	}
+	sg_init_table(sg_srr, sg_srr_cnt);
+	sgp = &sg_srr[0];
+	/*
+	 * Walk the remaining list for sg_srr_start, mapping to the newly
+	 * allocated sg_srr taking first_offset into account.
+	 */
+	for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
+		if (first_offset) {
+			sg_set_page(sgp, sg_page(sg),
+				(sg->length - first_offset), first_offset);
+			first_offset = 0;
+		} else {
+			sg_set_page(sgp, sg_page(sg), sg->length, 0);
+		}
+		bufflen += sgp->length;
+
+		sgp = sg_next(sgp);
+		if (!sgp)
+			break;
+	}
+
+	cmd->sg = sg_srr;
+	cmd->sg_cnt = sg_srr_cnt;
+	cmd->bufflen = bufflen;
+	cmd->offset += offset;
+	cmd->free_sg = 1;
+
+	ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe308, "New cmd->sg: %p\n", cmd->sg);
+	ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe309, "New cmd->sg_cnt: %u\n", cmd->sg_cnt);
+	ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe30b, "New cmd->bufflen: %u\n", cmd->bufflen);
+	ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe30c, "New cmd->offset: %u\n", cmd->offset);
+
+	if (cmd->sg_cnt < 0)
+		BUG();
+
+	if (cmd->bufflen < 0)
+		BUG();
+
+	return 0;
+}
+
+static inline int qla_tgt_srr_adjust_data(struct qla_tgt_cmd *cmd,
+	uint32_t srr_rel_offs, int *xmit_type)
+{
+	int res = 0, rel_offs;
+
+	rel_offs = srr_rel_offs - cmd->offset;
+	ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe12b, "srr_rel_offs=%d, rel_offs=%d",
+			srr_rel_offs, rel_offs);
+
+	*xmit_type = QLA_TGT_XMIT_ALL;
+
+	if (rel_offs < 0) {
+		printk(KERN_ERR "qla_target(%d): SRR rel_offs (%d) "
+			"< 0", cmd->vha->vp_idx, rel_offs);
+		res = -1;
+	} else if (rel_offs == cmd->bufflen)
+		*xmit_type = QLA_TGT_XMIT_STATUS;
+	else if (rel_offs > 0)
+		res = qla_tgt_set_data_offset(cmd, rel_offs);
+
+	return res;
+}
+
+/* No locks, thread context */
+static void qla_tgt_handle_srr(struct scsi_qla_host *vha, struct qla_tgt_srr_ctio *sctio,
+	struct qla_tgt_srr_imm *imm)
+{
+	imm_ntfy_from_isp_t *ntfy = (imm_ntfy_from_isp_t *)&imm->imm_ntfy;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_cmd *cmd = sctio->cmd;
+	struct se_cmd *se_cmd = &cmd->se_cmd;
+	unsigned long flags;
+	int xmit_type = 0, resp = 0;
+	uint32_t offset;
+	uint16_t srr_ui;
+
+	offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
+	srr_ui = ntfy->u.isp24.srr_ui;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe12c, "SRR cmd %p, srr_ui %x\n",
+			cmd, srr_ui);
+
+	switch (srr_ui) {
+	case SRR_IU_STATUS:
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		qla_tgt_send_notify_ack(vha, ntfy,
+			0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		xmit_type = QLA_TGT_XMIT_STATUS;
+		resp = 1;
+		break;
+	case SRR_IU_DATA_IN:
+		if (!cmd->sg || !cmd->sg_cnt) {
+			printk(KERN_ERR "Unable to process SRR_IU_DATA_IN due to"
+				" missing cmd->sg, state: %d\n", cmd->state);
+			dump_stack();
+			goto out_reject;
+		}
+		if (se_cmd->scsi_status != 0) {
+			ql_dbg(ql_dbg_tgt, vha, 0xe022, "Rejecting SRR_IU_DATA_IN"
+					" with non GOOD scsi_status\n");
+			goto out_reject;
+		}
+		cmd->bufflen = se_cmd->data_length;
+
+		if (qla_tgt_has_data(cmd)) {
+			if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+				goto out_reject;
+			spin_lock_irqsave(&ha->hardware_lock, flags);
+			qla_tgt_send_notify_ack(vha, ntfy,
+				0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			resp = 1;
+		} else {
+			printk(KERN_ERR "qla_target(%d): SRR for in data for cmd "
+				"without them (tag %d, SCSI status %d), "
+				"reject", vha->vp_idx, cmd->tag,
+				cmd->se_cmd.scsi_status);
+			goto out_reject;
+		}
+		break;
+	case SRR_IU_DATA_OUT:
+		if (!cmd->sg || !cmd->sg_cnt) {
+			printk(KERN_ERR "Unable to process SRR_IU_DATA_OUT due to"
+				" missing cmd->sg\n");
+			dump_stack();
+			goto out_reject;
+		}
+		if (se_cmd->scsi_status != 0) {
+			ql_dbg(ql_dbg_tgt, vha, 0xe023, "Rejecting SRR_IU_DATA_OUT"
+					" with non GOOD scsi_status\n");
+			goto out_reject;
+		}
+		cmd->bufflen = se_cmd->data_length;
+
+		if (qla_tgt_has_data(cmd)) {
+			if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+				goto out_reject;
+			spin_lock_irqsave(&ha->hardware_lock, flags);
+			qla_tgt_send_notify_ack(vha, ntfy,
+				0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			if (xmit_type & QLA_TGT_XMIT_DATA)
+				qla_tgt_rdy_to_xfer(cmd);
+		} else {
+			printk(KERN_ERR "qla_target(%d): SRR for out data for cmd "
+				"without them (tag %d, SCSI status %d), "
+				"reject", vha->vp_idx, cmd->tag,
+				cmd->se_cmd.scsi_status);
+			goto out_reject;
+		}
+		break;
+	default:
+		printk(KERN_ERR "qla_target(%d): Unknown srr_ui value %x",
+			vha->vp_idx, srr_ui);
+		goto out_reject;
+	}
+
+	/* Transmit response in case of status and data-in cases */
+	if (resp) {
+		qla_tgt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+	}
+
+	return;
+
+out_reject:
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	qla_tgt_send_notify_ack(vha, ntfy, 0, 0, 0,
+		NOTIFY_ACK_SRR_FLAGS_REJECT,
+		NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+		NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+	if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
+		cmd->state = QLA_TGT_STATE_DATA_IN;
+		dump_stack();
+	} else
+		qla_tgt_send_term_exchange(vha, cmd, &cmd->atio, 1);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static void qla_tgt_reject_free_srr_imm(struct scsi_qla_host *vha, struct qla_tgt_srr_imm *imm,
+	int ha_locked)
+{
+	struct qla_hw_data *ha = vha->hw;
+	unsigned long flags = 0;
+
+	if (!ha_locked)
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	qla_tgt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
+		NOTIFY_ACK_SRR_FLAGS_REJECT,
+		NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+		NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+
+	if (!ha_locked)
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	kfree(imm);
+}
+
+static void qla_tgt_handle_srr_work(struct work_struct *work)
+{
+	struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
+	struct scsi_qla_host *vha = NULL;
+	struct qla_tgt_srr_ctio *sctio;
+	unsigned long flags;
+
+	ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe12e, "Entering SRR work (tgt %p)\n", tgt);
+
+restart:
+	spin_lock_irqsave(&tgt->srr_lock, flags);
+	list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
+		struct qla_tgt_srr_imm *imm, *i, *ti;
+		struct qla_tgt_cmd *cmd;
+		struct se_cmd *se_cmd;
+
+		imm = NULL;
+		list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
+						srr_list_entry) {
+			if (i->srr_id == sctio->srr_id) {
+				list_del(&i->srr_list_entry);
+				if (imm) {
+					printk(KERN_ERR "qla_target(%d): There must "
+					  "be only one IMM SRR per CTIO SRR "
+					  "(IMM SRR %p, id %d, CTIO %p\n",
+					  vha->vp_idx, i, i->srr_id, sctio);
+					qla_tgt_reject_free_srr_imm(vha, i, 0);
+				} else
+					imm = i;
+			}
+		}
+
+		ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe12f, "IMM SRR %p, CTIO SRR %p (id %d)\n",
+			imm, sctio, sctio->srr_id);
+
+		if (imm == NULL) {
+			ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe130, "Not found matching IMM"
+				" for SRR CTIO (id %d)\n", sctio->srr_id);
+			continue;
+		} else
+			list_del(&sctio->srr_list_entry);
+
+		spin_unlock_irqrestore(&tgt->srr_lock, flags);
+
+		cmd = sctio->cmd;
+		vha = cmd->vha;
+		/*
+		 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
+		 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
+		 * logic..
+		 */
+		cmd->offset = 0;
+		if (cmd->free_sg) {
+			kfree(cmd->sg);
+			cmd->sg = NULL;
+			cmd->free_sg = 0;
+		}
+		se_cmd = &cmd->se_cmd;
+
+		cmd->sg_cnt = se_cmd->t_tasks_sg_chained_no;
+		cmd->sg = se_cmd->t_tasks_sg_chained;
+
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe131,  "SRR cmd %p (se_cmd %p, tag %d, op %x), "
+			"sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd,
+			cmd->tag, se_cmd->t_task_cdb[0], cmd->sg_cnt,
+			cmd->offset);
+
+		qla_tgt_handle_srr(vha, sctio, imm);
+
+		kfree(imm);
+		kfree(sctio);
+		goto restart;
+	}
+	spin_unlock_irqrestore(&tgt->srr_lock, flags);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_prepare_srr_imm(struct scsi_qla_host *vha,
+	imm_ntfy_from_isp_t *iocb)
+{
+	struct qla_tgt_srr_imm *imm;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	struct qla_tgt_srr_ctio *sctio;
+
+	tgt->imm_srr_id++;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe132, "qla_target(%d): SRR received\n",
+			vha->vp_idx);
+
+	imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
+	if (imm != NULL) {
+		memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
+
+		/* IRQ is already OFF */
+		spin_lock(&tgt->srr_lock);
+		imm->srr_id = tgt->imm_srr_id;
+		list_add_tail(&imm->srr_list_entry,
+			&tgt->srr_imm_list);
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe133, "IMM NTFY SRR %p added (id %d,"
+			" ui %x)\n", imm, imm->srr_id, iocb->u.isp24.srr_ui);
+		if (tgt->imm_srr_id == tgt->ctio_srr_id) {
+			int found = 0;
+			list_for_each_entry(sctio, &tgt->srr_ctio_list,
+					srr_list_entry) {
+				if (sctio->srr_id == imm->srr_id) {
+					found = 1;
+					break;
+				}
+			}
+			if (found) {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xe134, "%s", "Scheduling srr work\n");
+				schedule_work(&tgt->srr_work);
+			} else {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xe135, "qla_target(%d): imm_srr_id "
+					"== ctio_srr_id (%d), but there is no "
+					"corresponding SRR CTIO, deleting IMM "
+					"SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
+					imm);
+				list_del(&imm->srr_list_entry);
+
+				kfree(imm);
+
+				spin_unlock(&tgt->srr_lock);
+				goto out_reject;
+			}
+		}
+		spin_unlock(&tgt->srr_lock);
+	} else {
+		struct qla_tgt_srr_ctio *ts;
+
+		printk(KERN_ERR "qla_target(%d): Unable to allocate SRR IMM "
+			"entry, SRR request will be rejected\n", vha->vp_idx);
+
+		/* IRQ is already OFF */
+		spin_lock(&tgt->srr_lock);
+		list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
+					srr_list_entry) {
+			if (sctio->srr_id == tgt->imm_srr_id) {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xe136, "CTIO SRR %p deleted "
+					"(id %d)\n", sctio, sctio->srr_id);
+				list_del(&sctio->srr_list_entry);
+				qla_tgt_send_term_exchange(vha, sctio->cmd,
+					&sctio->cmd->atio, 1);
+				kfree(sctio);
+			}
+		}
+		spin_unlock(&tgt->srr_lock);
+		goto out_reject;
+	}
+
+	return;
+
+out_reject:
+	qla_tgt_send_notify_ack(vha, iocb, 0, 0, 0,
+		NOTIFY_ACK_SRR_FLAGS_REJECT,
+		NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+		NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_handle_imm_notify(struct scsi_qla_host *vha,
+	imm_ntfy_from_isp_t *iocb)
+{
+	struct qla_hw_data *ha = vha->hw;
+	uint32_t add_flags = 0;
+	int send_notify_ack = 1;
+	uint16_t status;
+
+	status = le16_to_cpu(iocb->u.isp2x.status);
+	switch (status) {
+	case IMM_NTFY_LIP_RESET:
+	{
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe137, "qla_target(%d): LIP reset"
+			" (loop %#x), subcode %x\n", vha->vp_idx,
+			le16_to_cpu(iocb->u.isp24.nport_handle),
+			iocb->u.isp24.status_subcode);
+
+		if (qla_tgt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
+			send_notify_ack = 0;
+		break;
+	}
+
+	case IMM_NTFY_LIP_LINK_REINIT:
+	{
+		struct qla_tgt *tgt = ha->qla_tgt;
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe139, "qla_target(%d): LINK REINIT (loop %#x, "
+			"subcode %x)\n", vha->vp_idx,
+			le16_to_cpu(iocb->u.isp24.nport_handle),
+			iocb->u.isp24.status_subcode);
+		if (tgt->link_reinit_iocb_pending) {
+			qla_tgt_send_notify_ack(vha, &tgt->link_reinit_iocb,
+				0, 0, 0, 0, 0, 0);
+		}
+		memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
+		tgt->link_reinit_iocb_pending = 1;
+		/*
+		 * QLogic requires to wait after LINK REINIT for possible
+		 * PDISC or ADISC ELS commands
+		 */
+		send_notify_ack = 0;
+		break;
+	}
+
+	case IMM_NTFY_PORT_LOGOUT:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13a, "qla_target(%d): Port logout (loop "
+			"%#x, subcode %x)\n", vha->vp_idx,
+			le16_to_cpu(iocb->u.isp24.nport_handle),
+			iocb->u.isp24.status_subcode);
+
+		if (qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
+			send_notify_ack = 0;
+		/* The sessions will be cleared in the callback, if needed */
+		break;
+
+	case IMM_NTFY_GLBL_TPRLO:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13c, "qla_target(%d): Global TPRLO (%x)\n",
+			vha->vp_idx, status);
+		if (qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
+			send_notify_ack = 0;
+		/* The sessions will be cleared in the callback, if needed */
+		break;
+
+	case IMM_NTFY_PORT_CONFIG:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13d, "qla_target(%d): Port config changed (%x)\n",
+			vha->vp_idx, status);
+		if (qla_tgt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
+			send_notify_ack = 0;
+		/* The sessions will be cleared in the callback, if needed */
+		break;
+
+	case IMM_NTFY_GLBL_LOGO:
+		printk(KERN_WARNING "qla_target(%d): Link failure detected\n",
+			vha->vp_idx);
+		/* I_T nexus loss */
+		if (qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
+			send_notify_ack = 0;
+		break;
+
+	case IMM_NTFY_IOCB_OVERFLOW:
+		printk(KERN_ERR "qla_target(%d): Cannot provide requested "
+			"capability (IOCB overflowed the immediate notify "
+			"resource count)\n", vha->vp_idx);
+		break;
+
+	case IMM_NTFY_ABORT_TASK:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13e,
+			"qla_target(%d): Abort Task (S %08x I %#x -> "
+			"L %#x)\n", vha->vp_idx, le16_to_cpu(iocb->u.isp2x.seq_id),
+			GET_TARGET_ID(ha, (atio_from_isp_t *)iocb),
+			le16_to_cpu(iocb->u.isp2x.lun));
+		if (qla_tgt_abort_task(vha, iocb) == 0)
+			send_notify_ack = 0;
+		break;
+
+	case IMM_NTFY_RESOURCE:
+		printk(KERN_ERR "qla_target(%d): Out of resources, host %ld\n",
+			    vha->vp_idx, vha->host_no);
+		break;
+
+	case IMM_NTFY_MSG_RX:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13f,
+			"qla_target(%d): Immediate notify task %x\n",
+			vha->vp_idx, iocb->u.isp2x.task_flags);
+		if (qla_tgt_handle_task_mgmt(vha, iocb) == 0)
+			send_notify_ack = 0;
+		break;
+
+	case IMM_NTFY_ELS:
+		if (qla_tgt_24xx_handle_els(vha, iocb) == 0)
+			send_notify_ack = 0;
+		break;
+
+	case IMM_NTFY_SRR:
+		qla_tgt_prepare_srr_imm(vha, iocb);
+		send_notify_ack = 0;
+		break;
+
+	default:
+		printk(KERN_ERR "qla_target(%d): Received unknown immediate "
+			"notify status %x\n", vha->vp_idx, status);
+		break;
+	}
+
+	if (send_notify_ack)
+		qla_tgt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ * This function sends busy to ISP 2xxx or 24xx.
+ */
+static void qla_tgt_send_busy(struct scsi_qla_host *vha,
+	atio_from_isp_t *atio, uint16_t status)
+{
+	ctio7_to_24xx_t *ctio24;
+	struct qla_hw_data *ha = vha->hw;
+	request_t *pkt;
+	struct qla_tgt_sess *sess = NULL;
+
+	sess = ha->tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
+	if (!sess) {
+		qla_tgt_send_term_exchange(vha, NULL, atio, 1);
+		return;
+	}
+	/* Sending marker isn't necessary, since we called from ISR */
+
+	pkt = (request_t *)qla2x00_req_pkt(vha);
+	if (!pkt) {
+		printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+			"request packet", vha->vp_idx, __func__);
+		return;
+	}
+
+	pkt->entry_count = 1;
+	pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+	ctio24 = (ctio7_to_24xx_t *)pkt;
+	ctio24->entry_type = CTIO_TYPE7;
+	ctio24->nport_handle = sess->loop_id;
+	ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+	ctio24->vp_index = vha->vp_idx;
+	ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+	ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+	ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+	ctio24->exchange_addr = atio->u.isp24.exchange_addr;
+	ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | __constant_cpu_to_le16(
+		CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
+		CTIO7_FLAGS_DONT_RET_CTIO);
+	/*
+	 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
+	 * if the explicit conformation is used.
+	 */
+	ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+	ctio24->u.status1.scsi_status = cpu_to_le16(status);
+	ctio24->u.status1.residual = get_unaligned((uint32_t *)
+		&atio->u.isp24.fcp_cmnd.add_cdb[atio->u.isp24.fcp_cmnd.add_cdb_len]);
+	if (ctio24->u.status1.residual != 0)
+		ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
+
+	qla2x00_start_iocbs(vha, vha->req);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qla_tgt_24xx_atio_pkt(struct scsi_qla_host *vha, atio_from_isp_t *atio)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	int rc;
+
+	if (unlikely(tgt == NULL)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe140, "ATIO pkt, but no tgt (ha %p)", ha);
+		return;
+	}
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe209, "qla_target(%d): ATIO pkt %p:"
+		" type %02x count %02x", vha->vp_idx, atio, atio->u.raw.entry_type,
+		atio->u.raw.entry_count);
+	/*
+	 * In tgt_stop mode we also should allow all requests to pass.
+	 * Otherwise, some commands can stuck.
+	 */
+
+	tgt->irq_cmd_count++;
+
+	switch (atio->u.raw.entry_type) {
+	case ATIO_TYPE7:
+		ql_dbg(ql_dbg_tgt, vha, 0xe026, "ATIO_TYPE7 instance %d, lun"
+			" %Lx, read/write %d/%d, add_cdb_len %d, data_length "
+			"%04x, s_id %x:%x:%x\n", vha->vp_idx,
+			atio->u.isp24.fcp_cmnd.lun,
+			atio->u.isp24.fcp_cmnd.rddata, atio->u.isp24.fcp_cmnd.wrdata,
+			atio->u.isp24.fcp_cmnd.add_cdb_len,
+			be32_to_cpu(get_unaligned((uint32_t *)
+				&atio->u.isp24.fcp_cmnd.add_cdb[atio->u.isp24.fcp_cmnd.add_cdb_len])),
+			atio->u.isp24.fcp_hdr.s_id[0], atio->u.isp24.fcp_hdr.s_id[1],
+			atio->u.isp24.fcp_hdr.s_id[2]);
+
+		if (unlikely(atio->u.isp24.exchange_addr ==
+				ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
+			printk(KERN_INFO "qla_target(%d): ATIO_TYPE7 "
+				"received with UNKNOWN exchange address, "
+				"sending QUEUE_FULL\n", vha->vp_idx);
+			qla_tgt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
+			break;
+		}
+		if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
+			rc = qla_tgt_handle_cmd_for_atio(vha, atio);
+		else
+			rc = qla_tgt_handle_task_mgmt(vha, atio);
+		if (unlikely(rc != 0)) {
+			if (rc == -ESRCH) {
+#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
+				qla_tgt_send_busy(vha, atio, SAM_STAT_BUSY);
+#else
+				qla_tgt_send_term_exchange(vha, NULL, atio, 1);
+#endif
+			} else {
+				if (tgt->tgt_stop) {
+					printk(KERN_INFO "qla_target: Unable to send "
+					"command to target for req, ignoring \n");
+				} else {
+					printk(KERN_INFO "qla_target(%d): Unable to send "
+					   "command to target, sending BUSY status\n",
+					   vha->vp_idx);
+					qla_tgt_send_busy(vha, atio, SAM_STAT_BUSY);
+				}
+			}
+		}
+		break;
+
+	case IMMED_NOTIFY_TYPE:
+	{
+		if (unlikely(atio->u.isp2x.entry_status != 0)) {
+			printk(KERN_ERR "qla_target(%d): Received ATIO packet %x "
+				"with error status %x\n", vha->vp_idx,
+				atio->u.raw.entry_type, atio->u.isp2x.entry_status);
+			break;
+		}
+		ql_dbg(ql_dbg_tgt, vha, 0xe027, "%s", "IMMED_NOTIFY ATIO");
+		qla_tgt_handle_imm_notify(vha, (imm_ntfy_from_isp_t *)atio);
+		break;
+	}
+
+	default:
+		printk(KERN_ERR "qla_target(%d): Received unknown ATIO atio "
+		     "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
+		break;
+	}
+
+	tgt->irq_cmd_count--;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qla_tgt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+
+	if (unlikely(tgt == NULL)) {
+		printk(KERN_ERR "qla_target(%d): Response pkt %x received, but no "
+			"tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
+		return;
+	}
+
+	ql_dbg(ql_dbg_tgt_pkt, vha, 0xe20a, "qla_target(%d): response pkt %p: T %02x"
+		" C %02x S %02x handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
+		pkt->entry_count, pkt->entry_status, pkt->handle);
+
+	/*
+	 * In tgt_stop mode we also should allow all requests to pass.
+	 * Otherwise, some commands can stuck.
+	 */
+
+	tgt->irq_cmd_count++;
+
+	switch (pkt->entry_type) {
+	case CTIO_TYPE7:
+	{
+		ctio7_from_24xx_t *entry = (ctio7_from_24xx_t *)pkt;
+		ql_dbg(ql_dbg_tgt, vha, 0xe028, "CTIO_TYPE7: instance %d\n", vha->vp_idx);
+		qla_tgt_do_ctio_completion(vha, entry->handle,
+			le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+			entry);
+		break;
+	}
+
+	case ACCEPT_TGT_IO_TYPE:
+	{
+		atio_from_isp_t *atio = (atio_from_isp_t *)pkt;
+		int rc;
+		ql_dbg(ql_dbg_tgt, vha, 0xe029, "ACCEPT_TGT_IO instance %d status %04x "
+			  "lun %04x read/write %d data_length %04x "
+			  "target_id %02x rx_id %04x\n ",
+			  vha->vp_idx, le16_to_cpu(atio->u.isp2x.status),
+			  le16_to_cpu(atio->u.isp2x.lun),
+			  atio->u.isp2x.execution_codes,
+			  le32_to_cpu(atio->u.isp2x.data_length),
+			  GET_TARGET_ID(ha, atio), atio->u.isp2x.rx_id);
+		if (atio->u.isp2x.status != __constant_cpu_to_le16(ATIO_CDB_VALID)) {
+			printk(KERN_ERR "qla_target(%d): ATIO with error "
+				    "status %x received\n", vha->vp_idx,
+				    le16_to_cpu(atio->u.isp2x.status));
+			break;
+		}
+		ql_dbg(ql_dbg_tgt_pkt, vha, 0xe20b, "FCP CDB: 0x%02x, sizeof(cdb): %lu",
+			atio->u.isp2x.cdb[0], (unsigned long int)sizeof(atio->u.isp2x.cdb));
+
+		rc = qla_tgt_handle_cmd_for_atio(vha, atio);
+		if (unlikely(rc != 0)) {
+			if (rc == -ESRCH) {
+#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
+				qla_tgt_send_busy(vha, atio, 0);
+#else
+				qla_tgt_send_term_exchange(vha, NULL, atio, 1);
+#endif
+			} else {
+				if (tgt->tgt_stop) {
+					printk(KERN_INFO "qla_target: Unable to send "
+						"command to target, sending TERM EXCHANGE"
+						" for rsp\n");
+					qla_tgt_send_term_exchange(vha, NULL,
+						atio, 1);
+				} else {
+					printk(KERN_INFO "qla_target(%d): Unable to send "
+						"command to target, sending BUSY status\n",
+						vha->vp_idx);
+					qla_tgt_send_busy(vha, atio, 0);
+				}
+			}
+		}
+	}
+	break;
+
+	case CONTINUE_TGT_IO_TYPE:
+	{
+		ctio_to_2xxx_t *entry = (ctio_to_2xxx_t *)pkt;
+		ql_dbg(ql_dbg_tgt, vha, 0xe02a, "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
+		qla_tgt_do_ctio_completion(vha, entry->handle,
+			le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+			entry);
+		break;
+	}
+
+	case CTIO_A64_TYPE:
+	{
+		ctio_to_2xxx_t *entry = (ctio_to_2xxx_t *)pkt;
+		ql_dbg(ql_dbg_tgt, vha, 0xe02b, "CTIO_A64: instance %d\n", vha->vp_idx);
+		qla_tgt_do_ctio_completion(vha, entry->handle,
+			le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+			entry);
+		break;
+	}
+
+	case IMMED_NOTIFY_TYPE:
+		ql_dbg(ql_dbg_tgt, vha, 0xe02c, "%s", "IMMED_NOTIFY\n");
+		qla_tgt_handle_imm_notify(vha, (imm_ntfy_from_isp_t *)pkt);
+		break;
+
+	case NOTIFY_ACK_TYPE:
+		if (tgt->notify_ack_expected > 0) {
+			nack_to_isp_t *entry = (nack_to_isp_t *)pkt;
+			ql_dbg(ql_dbg_tgt, vha, 0xe02d, "NOTIFY_ACK seq %08x status %x\n",
+				  le16_to_cpu(entry->u.isp2x.seq_id),
+				  le16_to_cpu(entry->u.isp2x.status));
+			tgt->notify_ack_expected--;
+			if (entry->u.isp2x.status !=
+				__constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
+				printk(KERN_ERR "qla_target(%d): NOTIFY_ACK "
+					    "failed %x\n", vha->vp_idx,
+					    le16_to_cpu(entry->u.isp2x.status));
+			}
+		} else {
+			printk(KERN_ERR "qla_target(%d): Unexpected NOTIFY_ACK "
+				    "received\n", vha->vp_idx);
+		}
+		break;
+
+	case ABTS_RECV_24XX:
+		ql_dbg(ql_dbg_tgt, vha, 0xe02e, "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
+		qla_tgt_24xx_handle_abts(vha, (abts_recv_from_24xx_t *)pkt);
+		break;
+
+	case ABTS_RESP_24XX:
+		if (tgt->abts_resp_expected > 0) {
+			abts_resp_from_24xx_fw_t *entry =
+				(abts_resp_from_24xx_fw_t *)pkt;
+			ql_dbg(ql_dbg_tgt, vha, 0xe02f, "ABTS_RESP_24XX: compl_status %x\n",
+				entry->compl_status);
+			tgt->abts_resp_expected--;
+			if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
+				if ((entry->error_subcode1 == 0x1E) &&
+				    (entry->error_subcode2 == 0)) {
+					/*
+					 * We've got a race here: aborted exchange not
+					 * terminated, i.e. response for the aborted
+					 * command was sent between the abort request
+					 * was received and processed. Unfortunately,
+					 * the firmware has a silly requirement that
+					 * all aborted exchanges must be explicitely
+					 * terminated, otherwise it refuses to send
+					 * responses for the abort requests. So, we
+					 * have to (re)terminate the exchange and
+					 * retry the abort response.
+					 */
+					qla_tgt_24xx_retry_term_exchange(vha, entry);
+				} else
+					printk(KERN_ERR "qla_target(%d): ABTS_RESP_24XX "
+					    "failed %x (subcode %x:%x)", vha->vp_idx,
+					    entry->compl_status, entry->error_subcode1,
+					    entry->error_subcode2);
+			}
+		} else {
+			printk(KERN_ERR "qla_target(%d): Unexpected ABTS_RESP_24XX "
+				    "received\n", vha->vp_idx);
+		}
+		break;
+
+	default:
+		printk(KERN_ERR "qla_target(%d): Received unknown response pkt "
+		     "type %x\n", vha->vp_idx, pkt->entry_type);
+		break;
+	}
+
+	tgt->irq_cmd_count--;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+void qla_tgt_async_event(uint16_t code, struct scsi_qla_host *vha, uint16_t *mailbox)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	int reason_code;
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe034, "scsi(%ld): ha state %d init_done %d"
+		" oper_mode %d topo %d\n", vha->host_no, atomic_read(&vha->loop_state),
+		vha->flags.init_done, ha->operating_mode, ha->current_topology);
+
+	if (!ha->tgt_ops)
+		return;
+
+	if (unlikely(tgt == NULL)) {
+		ql_dbg(ql_dbg_tgt, vha, 0xe035, "ASYNC EVENT %#x, but no tgt"
+				" (ha %p)", code, ha);
+		return;
+	}
+
+	if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
+	     IS_QLA2100(ha))
+		return;
+	/*
+	 * In tgt_stop mode we also should allow all requests to pass.
+	 * Otherwise, some commands can stuck.
+	 */
+
+	tgt->irq_cmd_count++;
+
+	switch (code) {
+	case MBA_RESET:			/* Reset */
+	case MBA_SYSTEM_ERR:		/* System Error */
+	case MBA_REQ_TRANSFER_ERR:	/* Request Transfer Error */
+	case MBA_RSP_TRANSFER_ERR:	/* Response Transfer Error */
+	case MBA_WAKEUP_THRES:		/* Request Queue Wake-up. */
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe141, "qla_target(%d): System error async event %#x "
+			"occured", vha->vp_idx, code);
+		break;
+
+	case MBA_LOOP_UP:
+	{
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe142, "qla_target(%d): Async LOOP_UP occured "
+			"(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
+			le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+			le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		if (tgt->link_reinit_iocb_pending) {
+			qla_tgt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
+				0, 0, 0, 0, 0, 0);
+			tgt->link_reinit_iocb_pending = 0;
+		}
+		break;
+	}
+
+	case MBA_LIP_OCCURRED:
+	case MBA_LOOP_DOWN:
+	case MBA_LIP_RESET:
+	case MBA_RSCN_UPDATE:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe143, "qla_target(%d): Async event %#x occured "
+			"(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
+			code, le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+			le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		break;
+
+	case MBA_PORT_UPDATE:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe144, "qla_target(%d): Port update async event %#x "
+			"occured: updating the ports database (m[1]=%x, m[2]=%x, "
+			"m[3]=%x, m[4]=%x)", vha->vp_idx, code,
+			le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+			le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		reason_code = le16_to_cpu(mailbox[2]);
+		if (reason_code == 0x4)
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe145, "Async MB 2: Got PLOGI Complete\n");
+		else if (reason_code == 0x7)
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe146, "Async MB 2: Port Logged Out\n");
+		break;
+
+	default:
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe147, "qla_target(%d): Async event %#x occured: "
+			"ignore (m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)",
+			vha->vp_idx, code,
+			le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+			le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		break;
+	}
+
+	tgt->irq_cmd_count--;
+}
+
+static fc_port_t *qla_tgt_get_port_database(struct scsi_qla_host *vha,
+	const uint8_t *s_id, uint16_t loop_id)
+{
+	fc_port_t *fcport;
+	int rc;
+
+	fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
+	if (!fcport) {
+		printk(KERN_ERR "qla_target(%d): Allocation of tmp FC port failed",
+				vha->vp_idx);
+		return NULL;
+	}
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe148, "loop_id %d", loop_id);
+
+	fcport->loop_id = loop_id;
+
+	rc = qla2x00_get_port_database(vha, fcport, 0);
+	if (rc != QLA_SUCCESS) {
+		printk(KERN_ERR "qla_target(%d): Failed to retrieve fcport "
+			"information -- get_port_database() returned %x "
+			"(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
+		kfree(fcport);
+		return NULL;
+        }
+
+	return fcport;
+}
+
+/* Must be called under tgt_mutex */
+static struct qla_tgt_sess *qla_tgt_make_local_sess(struct scsi_qla_host *vha,
+	uint8_t *s_id, uint16_t loop_id)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess = NULL;
+	fc_port_t *fcport = NULL;
+	int rc, global_resets;
+
+retry:
+	global_resets = atomic_read(&ha->qla_tgt->tgt_global_resets_count);
+
+	rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
+	if (rc != 0) {
+		if ((s_id[0] == 0xFF) &&
+		    (s_id[1] == 0xFC)) {
+			/*
+			 * This is Domain Controller, so it should be
+			 * OK to drop SCSI commands from it.
+			 */
+			ql_dbg(ql_dbg_tgt_mgt, vha, 0xe149, "Unable to find"
+				" initiator with S_ID %x:%x:%x", s_id[0],
+				s_id[1], s_id[2]);
+		} else
+			printk(KERN_ERR "qla_target(%d): Unable to find "
+				"initiator with S_ID %x:%x:%x",
+				vha->vp_idx, s_id[0], s_id[1],
+				s_id[2]);
+		return NULL;
+	}
+
+	fcport = qla_tgt_get_port_database(vha, s_id, loop_id);
+	if (!fcport)
+		return NULL;
+
+	if (global_resets != atomic_read(&ha->qla_tgt->tgt_global_resets_count)) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0xe14a, "qla_target(%d): global reset"
+			" during session discovery (counter was %d, new %d),"
+			" retrying", vha->vp_idx, global_resets,
+			atomic_read(&ha->qla_tgt->tgt_global_resets_count));
+		goto retry;
+	}
+
+	sess = qla_tgt_create_sess(vha, fcport, true);
+
+	kfree(fcport);
+	return sess;
+}
+
+static void qla_tgt_abort_work(struct qla_tgt *tgt,
+	struct qla_tgt_sess_work_param *prm)
+{
+	struct scsi_qla_host *vha = tgt->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess = NULL;
+	unsigned long flags;
+	uint32_t be_s_id;
+	uint8_t *s_id = NULL; /* to hide compiler warnings */
+	uint8_t local_s_id[3];
+	int rc, loop_id = -1; /* to hide compiler warnings */
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	if (tgt->tgt_stop)
+		goto out_term;
+
+	be_s_id = (prm->abts.fcp_hdr_le.s_id[0] << 16) |
+		(prm->abts.fcp_hdr_le.s_id[1] << 8) |
+		prm->abts.fcp_hdr_le.s_id[2];
+
+	sess = ha->tgt_ops->find_sess_by_s_id(vha,
+			(unsigned char *)&be_s_id);
+	if (!sess) {
+		s_id = local_s_id;
+		s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
+		s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
+		s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		mutex_lock(&ha->tgt_mutex);
+		sess = qla_tgt_make_local_sess(vha, s_id, loop_id);
+		/* sess has got an extra creation ref */
+		mutex_unlock(&ha->tgt_mutex);
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		if (!sess)
+			goto out_term;
+	} else {
+		kref_get(&sess->se_sess->sess_kref);
+	}
+
+	if (tgt->tgt_stop)
+		goto out_term;
+
+	rc = __qla_tgt_24xx_handle_abts(vha, &prm->abts, sess);
+	if (rc != 0)
+		goto out_term;
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	ha->tgt_ops->put_sess(sess);
+	return;
+
+out_term:
+	qla_tgt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	if (sess)
+		ha->tgt_ops->put_sess(sess);
+}
+
+static void qla_tgt_tmr_work(struct qla_tgt *tgt,
+	struct qla_tgt_sess_work_param *prm)
+{
+	atio_from_isp_t *a = &prm->tm_iocb2;
+	struct scsi_qla_host *vha = tgt->vha;
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt_sess *sess = NULL;
+	unsigned long flags;
+	uint8_t *s_id = NULL; /* to hide compiler warnings */
+	int rc, loop_id = -1; /* to hide compiler warnings */
+	uint32_t lun, unpacked_lun;
+	int lun_size, fn;
+	void *iocb;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	if (tgt->tgt_stop)
+		goto out_term;
+
+	s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
+	sess = ha->tgt_ops->find_sess_by_s_id(vha, s_id);
+	if (!sess) {
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		mutex_lock(&ha->tgt_mutex);
+		sess = qla_tgt_make_local_sess(vha, s_id, loop_id);
+		/* sess has got an extra creation ref */
+		mutex_unlock(&ha->tgt_mutex);
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		if (!sess)
+			goto out_term;
+	} else {
+		kref_get(&sess->se_sess->sess_kref);
+	}
+
+	iocb = a;
+	lun = a->u.isp24.fcp_cmnd.lun;
+	lun_size = sizeof(lun);
+	fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
+	unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+	rc = qla_tgt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+	if (rc != 0)
+		goto out_term;
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	ha->tgt_ops->put_sess(sess);
+	return;
+
+out_term:
+	qla_tgt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	if (sess)
+		ha->tgt_ops->put_sess(sess);
+}
+
+static void qla_tgt_sess_work_fn(struct work_struct *work)
+{
+	struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
+	struct scsi_qla_host *vha = tgt->vha;
+	struct qla_hw_data *ha = vha->hw;
+	unsigned long flags;
+
+	ql_dbg(ql_dbg_tgt_mgt, vha, 0xe14e, "Sess work (tgt %p)", tgt);
+
+	spin_lock_irqsave(&tgt->sess_work_lock, flags);
+	while (!list_empty(&tgt->sess_works_list)) {
+		struct qla_tgt_sess_work_param *prm = list_entry(
+			tgt->sess_works_list.next, typeof(*prm),
+			sess_works_list_entry);
+
+		/*
+		 * This work can be scheduled on several CPUs at time, so we
+		 * must delete the entry to eliminate double processing
+		 */
+		list_del(&prm->sess_works_list_entry);
+
+		spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+		switch (prm->type) {
+		case QLA_TGT_SESS_WORK_ABORT:
+			qla_tgt_abort_work(tgt, prm);
+			break;
+		case QLA_TGT_SESS_WORK_TM:
+			qla_tgt_tmr_work(tgt, prm);
+			break;
+		default:
+			BUG_ON(1);
+			break;
+		}
+
+		spin_lock_irqsave(&tgt->sess_work_lock, flags);
+
+		kfree(prm);
+	}
+	spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	spin_lock(&tgt->sess_work_lock);
+	if (list_empty(&tgt->sess_works_list)) {
+		tgt->sess_works_pending = 0;
+		tgt->tm_to_unknown = 0;
+	}
+	spin_unlock(&tgt->sess_work_lock);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qla_tgt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
+{
+	struct qla_tgt *tgt;
+
+	ql_dbg(ql_dbg_tgt, base_vha, 0xe036, "Registering target for host %ld(%p)",
+			base_vha->host_no, ha);
+
+	BUG_ON((ha->qla_tgt != NULL) || (ha->tgt_ops != NULL));
+
+	tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
+	if (!tgt) {
+		printk(KERN_ERR "Unable to allocate struct qla_tgt\n");
+		return -ENOMEM;
+	}
+
+	tgt->ha = ha;
+	tgt->vha = base_vha;
+	init_waitqueue_head(&tgt->waitQ);
+	INIT_LIST_HEAD(&tgt->sess_list);
+	INIT_LIST_HEAD(&tgt->del_sess_list);
+	INIT_DELAYED_WORK(&tgt->sess_del_work,
+		(void (*)(struct work_struct *))qla_tgt_del_sess_work_fn);
+	spin_lock_init(&tgt->sess_work_lock);
+	INIT_WORK(&tgt->sess_work, qla_tgt_sess_work_fn);
+	INIT_LIST_HEAD(&tgt->sess_works_list);
+	spin_lock_init(&tgt->srr_lock);
+	INIT_LIST_HEAD(&tgt->srr_ctio_list);
+	INIT_LIST_HEAD(&tgt->srr_imm_list);
+	INIT_WORK(&tgt->srr_work, qla_tgt_handle_srr_work);
+	atomic_set(&tgt->tgt_global_resets_count, 0);
+
+	ha->qla_tgt = tgt;
+
+	printk(KERN_INFO "qla_target(%d): using 64 Bit PCI "
+			   "addressing", base_vha->vp_idx);
+	tgt->tgt_enable_64bit_addr = 1;
+	/* 3 is reserved */
+	tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
+	tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
+	tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
+
+	mutex_lock(&qla_tgt_mutex);
+	list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
+	mutex_unlock(&qla_tgt_mutex);
+
+	return 0;
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qla_tgt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
+{
+	if (!ha->qla_tgt) {
+		printk(KERN_ERR "qla_target(%d): Can't remove "
+			"existing target", vha->vp_idx);
+		return 0;
+	}
+
+	mutex_lock(&qla_tgt_mutex);
+	list_del(&ha->qla_tgt->tgt_list_entry);
+	mutex_unlock(&qla_tgt_mutex);
+
+	ql_dbg(ql_dbg_tgt, vha, 0xe037, "Unregistering target for host %ld(%p)",
+			vha->host_no, ha);
+	qla_tgt_release(ha->qla_tgt);
+
+	return 0;
+}
+
+static void qla_tgt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, unsigned char *b)
+{
+	int i;
+
+	pr_debug("qla2xxx HW vha->node_name: ");
+	for (i = 0; i < 8; i++)
+		pr_debug("%02x ", vha->node_name[i]);
+	pr_debug("\n");
+	pr_debug("qla2xxx HW vha->port_name: ");
+	for (i = 0; i < 8; i++)
+		pr_debug("%02x ", vha->port_name[i]);
+	pr_debug("\n");
+
+	pr_debug("qla2xxx passed configfs WWPN: ");
+	put_unaligned_be64(wwpn, b);
+	for (i = 0; i < 8; i++)
+		pr_debug("%02x ", b[i]);
+	pr_debug("\n");
+}
+
+/**
+ * qla_tgt_lport_register - register lport with external module
+ *
+ * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
+ * @wwpn: Passwd FC target WWPN
+ * @callback:  lport initialization callback for tcm_qla2xxx code
+ * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
+ */
+int qla_tgt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
+                       int (*callback)(struct scsi_qla_host *),
+                       void *target_lport_ptr)
+{
+	struct qla_tgt *tgt;
+	struct scsi_qla_host *vha;
+	struct qla_hw_data *ha;
+	struct Scsi_Host *host;
+	unsigned long flags;
+	int rc;
+	u8 b[8];
+
+	mutex_lock(&qla_tgt_mutex);
+	list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
+		vha = tgt->vha;
+		ha = vha->hw;
+
+		host = vha->host;
+		if (!host)
+			continue;
+
+		if (ha->tgt_ops != NULL)
+			continue;
+
+		if (!(host->hostt->supported_mode & MODE_TARGET))
+			continue;
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		if (host->active_mode & MODE_TARGET) {
+			pr_debug("MODE_TARGET already active on qla2xxx"
+					"(%d)\n",  host->host_no);
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			continue;
+		}
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		if (!scsi_host_get(host)) {
+			pr_err("Unable to scsi_host_get() for"
+					" qla2xxx scsi_host\n");
+			continue;
+		}
+		qla_tgt_lport_dump(vha, wwpn, b);
+
+		if (memcmp(vha->port_name, b, 8)) {
+			scsi_host_put(host);
+			continue;
+		}
+		/*
+		 * Setup passed parameters ahead of invoking callback
+		 */
+		ha->tgt_ops = qla_tgt_ops;
+		ha->target_lport_ptr = target_lport_ptr;
+		rc = (*callback)(vha);
+		if (rc != 0) {
+			ha->tgt_ops = NULL;
+			ha->target_lport_ptr = NULL;
+		}
+		mutex_unlock(&qla_tgt_mutex);
+		return rc;
+	}
+	mutex_unlock(&qla_tgt_mutex);
+
+	return -ENODEV;
+}
+EXPORT_SYMBOL(qla_tgt_lport_register);
+
+/**
+ * qla_tgt_lport_deregister - Degister lport
+ *
+ * @vha:  Registered scsi_qla_host pointer
+ */
+void qla_tgt_lport_deregister(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct Scsi_Host *sh = vha->host;
+	/*
+	 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
+	 */
+	ha->target_lport_ptr = NULL;
+	ha->tgt_ops = NULL;
+	/*
+	 * Release the Scsi_Host reference for the underlying qla2xxx host
+	 */
+	scsi_host_put(sh);
+}
+EXPORT_SYMBOL(qla_tgt_lport_deregister);
+
+/* Must be called under HW lock */
+void qla_tgt_set_mode(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	switch (ql2x_ini_mode) {
+	case QLA2XXX_INI_MODE_DISABLED:
+	case QLA2XXX_INI_MODE_EXCLUSIVE:
+		vha->host->active_mode = MODE_TARGET;
+		break;
+	case QLA2XXX_INI_MODE_ENABLED:
+		vha->host->active_mode |= MODE_TARGET;
+		break;
+	default:
+		break;
+	}
+
+	if (ha->ini_mode_force_reverse)
+		qla_reverse_ini_mode(vha);
+}
+
+/* Must be called under HW lock */
+void qla_tgt_clear_mode(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	switch (ql2x_ini_mode) {
+	case QLA2XXX_INI_MODE_DISABLED:
+		vha->host->active_mode = MODE_UNKNOWN;
+		break;
+	case QLA2XXX_INI_MODE_EXCLUSIVE:
+		vha->host->active_mode = MODE_INITIATOR;
+		break;
+	case QLA2XXX_INI_MODE_ENABLED:
+		vha->host->active_mode &= ~MODE_TARGET;
+		break;
+	default:
+		break;
+	}
+
+	if (ha->ini_mode_force_reverse)
+		qla_reverse_ini_mode(vha);
+}
+
+/*
+ * qla_tgt_enable_vha - NO LOCK HELD
+ *
+ * host_reset, bring up w/ Target Mode Enabled
+ */
+void
+qla_tgt_enable_vha(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	unsigned long flags;
+
+	if (!tgt) {
+		printk(KERN_ERR "Unable to locate qla_tgt pointer from"
+				" struct qla_hw_data\n");
+		dump_stack();
+		return;
+	}
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	tgt->tgt_stopped = 0;
+	qla_tgt_set_mode(vha);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+	qla2xxx_wake_dpc(vha);
+	qla2x00_wait_for_hba_online(vha);
+}
+EXPORT_SYMBOL(qla_tgt_enable_vha);
+
+/*
+ * qla_tgt_disable_vha - NO LOCK HELD
+ *
+ * Disable Target Mode and reset the adapter
+ */
+void
+qla_tgt_disable_vha(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct qla_tgt *tgt = ha->qla_tgt;
+	unsigned long flags;
+
+	if (!tgt) {
+		printk(KERN_ERR "Unable to locate qla_tgt pointer from"
+				" struct qla_hw_data\n");
+		dump_stack();
+		return;
+	}
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	qla_tgt_clear_mode(vha);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+	qla2xxx_wake_dpc(vha);
+	qla2x00_wait_for_hba_online(vha);
+}
+
+/*
+ * Called from qla_init.c:qla24xx_vport_create() contex to setup
+ * the target mode specific struct scsi_qla_host and struct qla_hw_data
+ * members.
+ */
+void
+qla_tgt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
+{
+	mutex_init(&ha->tgt_mutex);
+	mutex_init(&ha->tgt_host_action_mutex);
+	qla_tgt_clear_mode(vha);
+
+	/*
+	 * NOTE: Currently the value is kept the same for <24xx and
+	 * 	 >=24xx ISPs. If it is necessary to change it,
+	 *	 the check should be added for specific ISPs,
+	 *	 assigning the value appropriately.
+	 */
+	ha->atio_q_length = ATIO_ENTRY_CNT_24XX;
+}
+
+void
+qla_tgt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
+{
+	/*
+	 * FC-4 Feature bit 0 indicates target functionality to the name server.
+	 */
+	if (qla_tgt_mode_enabled(vha)) {
+		if (qla_ini_mode_enabled(vha))
+			ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
+		else
+			ct_req->req.rff_id.fc4_feature = BIT_0;
+	} else if (qla_ini_mode_enabled(vha)) {
+		ct_req->req.rff_id.fc4_feature = BIT_1;
+	}
+}
+
+/*
+ * qla_tgt_init_atio_q_entries() - Initializes ATIO queue entries.
+ * @ha: HA context
+ *
+ * Beginning of ATIO ring has initialization control block already built
+ * by nvram config routine.
+ *
+ * Returns 0 on success.
+ */
+void
+qla_tgt_init_atio_q_entries(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	uint16_t cnt;
+	atio_from_isp_t *pkt = (atio_from_isp_t *)ha->atio_ring;
+
+	for (cnt = 0; cnt < ha->atio_q_length; cnt++) {
+		pkt->u.raw.signature = ATIO_PROCESSED;
+		pkt++;
+	}
+
+}
+
+/*
+ * qla_tgt_24xx_process_atio_queue() - Process ATIO queue entries.
+ * @ha: SCSI driver HA context
+ */
+void
+qla_tgt_24xx_process_atio_queue(struct scsi_qla_host *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
+	atio_from_isp_t *pkt;
+	int cnt, i;
+
+	if (!vha->flags.online)
+		return;
+
+	while (ha->atio_ring_ptr->signature != ATIO_PROCESSED) {
+		pkt = (atio_from_isp_t *)ha->atio_ring_ptr;
+		cnt = pkt->u.raw.entry_count;
+
+		qla_tgt_24xx_atio_pkt_all_vps(vha, (atio_from_isp_t *)pkt);
+
+		for (i = 0; i < cnt; i++) {
+			ha->atio_ring_index++;
+			if (ha->atio_ring_index == ha->atio_q_length) {
+				ha->atio_ring_index = 0;
+				ha->atio_ring_ptr = ha->atio_ring;
+			} else
+				ha->atio_ring_ptr++;
+
+			pkt->u.raw.signature = ATIO_PROCESSED;
+			pkt = (atio_from_isp_t *)ha->atio_ring_ptr;
+		}
+		wmb();
+	}
+
+	/* Adjust ring index */
+	WRT_REG_DWORD(&reg->atio_q_out, ha->atio_ring_index);
+}
+
+void
+qla_tgt_24xx_config_rings(struct scsi_qla_host *vha, device_reg_t __iomem *reg)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+/* FIXME: atio_q in/out for ha->mqenable=1..? */
+	if (ha->mqenable) {
+#if 0
+                WRT_REG_DWORD(&reg->isp25mq.atio_q_in, 0);
+                WRT_REG_DWORD(&reg->isp25mq.atio_q_out, 0);
+                RD_REG_DWORD(&reg->isp25mq.atio_q_out);
+#endif
+	} else {
+		/* Setup APTIO registers for target mode */
+		WRT_REG_DWORD(&reg->isp24.atio_q_in, 0);
+		WRT_REG_DWORD(&reg->isp24.atio_q_out, 0);
+		RD_REG_DWORD(&reg->isp24.atio_q_out);
+	}
+}
+
+void
+qla_tgt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	if (qla_tgt_mode_enabled(vha)) {
+		if (!ha->saved_set) {
+			/* We save only once */
+			ha->saved_exchange_count = nv->exchange_count;
+			ha->saved_firmware_options_1 = nv->firmware_options_1;
+			ha->saved_firmware_options_2 = nv->firmware_options_2;
+			ha->saved_firmware_options_3 = nv->firmware_options_3;
+			ha->saved_set = 1;
+		}
+
+		nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
+
+		/* Enable target mode */
+		nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
+
+		/* Disable ini mode, if requested */
+		if (!qla_ini_mode_enabled(vha))
+			nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
+
+		/* Disable Full Login after LIP */
+		nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
+		/* Enable initial LIP */
+		nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
+		/* Enable FC tapes support */
+		nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
+		/* Disable Full Login after LIP */
+		nv->host_p &= __constant_cpu_to_le32(~BIT_10);
+		/* Enable target PRLI control */
+		nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
+	} else {
+		if (ha->saved_set) {
+			nv->exchange_count = ha->saved_exchange_count;
+			nv->firmware_options_1 = ha->saved_firmware_options_1;
+			nv->firmware_options_2 = ha->saved_firmware_options_2;
+			nv->firmware_options_3 = ha->saved_firmware_options_3;
+		}
+	}
+
+	/* out-of-order frames reassembly */
+	nv->firmware_options_3 |= BIT_6|BIT_9;
+
+	if (ha->enable_class_2) {
+		if (vha->flags.init_done)
+			fc_host_supported_classes(vha->host) =
+				FC_COS_CLASS2 | FC_COS_CLASS3;
+
+		nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
+	} else {
+		if (vha->flags.init_done)
+			fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
+
+		nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
+	}
+}
+
+void
+qla_tgt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, struct init_cb_24xx *icb)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	if (ha->node_name_set) {
+		memcpy(icb->node_name, ha->tgt_node_name, WWN_SIZE);
+		icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
+	}
+}
+
+int
+qla_tgt_24xx_process_response_error(struct scsi_qla_host *vha, struct sts_entry_24xx *pkt)
+{
+	switch (pkt->entry_type) {
+	case ABTS_RECV_24XX:
+	case ABTS_RESP_24XX:
+	case CTIO_TYPE7:
+	case NOTIFY_ACK_TYPE:
+		return 1;
+	default:
+		return 0;
+	}
+}
+
+void
+qla_tgt_modify_vp_config(struct scsi_qla_host *vha, struct vp_config_entry_24xx *vpmod)
+{
+	if (qla_tgt_mode_enabled(vha))
+		vpmod->options_idx1 &= ~BIT_5;
+	/* Disable ini mode, if requested */
+	if (!qla_ini_mode_enabled(vha))
+		vpmod->options_idx1 &= ~BIT_4;
+}
+
+void
+qla_tgt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
+{
+	mutex_init(&ha->tgt_mutex);
+	mutex_init(&ha->tgt_host_action_mutex);
+	qla_tgt_clear_mode(base_vha);
+}
+
+int
+qla_tgt_mem_alloc(struct qla_hw_data *ha)
+{
+	ha->tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
+				MAX_MULTI_ID_FABRIC, GFP_KERNEL);
+	if (!ha->tgt_vp_map)
+		return -ENOMEM;
+
+	ha->atio_ring = dma_alloc_coherent(&ha->pdev->dev,
+			(ha->atio_q_length + 1) * sizeof(atio_from_isp_t),
+			&ha->atio_dma, GFP_KERNEL);
+	if (!ha->atio_ring) {
+		kfree(ha->tgt_vp_map);
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+void
+qla_tgt_mem_free(struct qla_hw_data *ha)
+{
+	if (ha->atio_ring) {
+		dma_free_coherent(&ha->pdev->dev, (ha->atio_q_length + 1) *
+				sizeof(atio_from_isp_t), ha->atio_ring, ha->atio_dma);
+	}
+	kfree(ha->tgt_vp_map);
+}
+
+static int __init qla_tgt_parse_ini_mode(void)
+{
+	if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
+		ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+	else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
+		ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
+	else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
+		ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
+	else
+		return false;
+
+	return true;
+}
+
+int __init qla_tgt_init(void)
+{
+	int ret;
+
+	if (!qla_tgt_parse_ini_mode()) {
+		printk(KERN_ERR "qla_tgt_parse_ini_mode() failed\n");
+		return -EINVAL;
+	}
+
+	qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
+			sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd),
+			0, NULL);
+	if (!qla_tgt_cmd_cachep) {
+		printk(KERN_ERR "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
+		return -ENOMEM;
+	}
+
+	qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
+		sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct qla_tgt_mgmt_cmd),
+			0, NULL);
+	if (!qla_tgt_mgmt_cmd_cachep) {
+		pr_warn(KERN_ERR "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
+				mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
+	if (!qla_tgt_mgmt_cmd_mempool) {
+		pr_warn(KERN_ERR "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
+		ret = -ENOMEM;
+		goto out_mgmt_cmd_cachep;
+	}
+
+	qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
+	if (!qla_tgt_wq) {
+		pr_warn(KERN_ERR "alloc_workqueue for qla_tgt_wq failed\n");
+		ret = -ENOMEM;
+		goto out_cmd_mempool;
+	}
+	/*
+	 * Return 1 to signal that initiator-mode is being disabled
+	 */
+	return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
+
+out_cmd_mempool:
+	mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+out_mgmt_cmd_cachep:
+	kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+out:
+	kmem_cache_destroy(qla_tgt_cmd_cachep);
+	return ret;
+}
+
+void __exit qla_tgt_exit(void)
+{
+	destroy_workqueue(qla_tgt_wq);
+	mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+	kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+	kmem_cache_destroy(qla_tgt_cmd_cachep);
+}
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
new file mode 100644
index 0000000..c3ff124
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -0,0 +1,984 @@
+/*
+ *  Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@xxxxxxxx>
+ *  Copyright (C) 2004 - 2005 Leonid Stoljar
+ *  Copyright (C) 2006 Nathaniel Clark <nate@xxxxxxxxxx>
+ *  Copyright (C) 2007 - 2010 ID7 Ltd.
+ *
+ *  Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ *  Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@xxxxxxxxxx>
+ *
+ *  Additional file for the target driver support.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *  GNU General Public License for more details.
+ */
+/*
+ * This is the global def file that is useful for including from the
+ * target portion.
+ */
+
+#ifndef __QLA_TARGET_H
+#define __QLA_TARGET_H
+
+#include "qla_def.h"
+
+/*
+ * Must be changed on any change in any initiator visible interfaces or
+ * data in the target add-on
+ */
+#define QLA2XXX_TARGET_MAGIC	269
+
+/*
+ * Must be changed on any change in any target visible interfaces or
+ * data in the initiator
+ */
+#define QLA2XXX_INITIATOR_MAGIC   57222
+
+#define QLA2XXX_INI_MODE_STR_EXCLUSIVE	"exclusive"
+#define QLA2XXX_INI_MODE_STR_DISABLED	"disabled"
+#define QLA2XXX_INI_MODE_STR_ENABLED	"enabled"
+
+#define QLA2XXX_INI_MODE_EXCLUSIVE	0
+#define QLA2XXX_INI_MODE_DISABLED	1
+#define QLA2XXX_INI_MODE_ENABLED	2
+
+#define QLA2XXX_COMMAND_COUNT_INIT	250
+#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
+
+/*
+ * Used to mark which completion handles (for RIO Status's) are for CTIO's
+ * vs. regular (non-target) info. This is checked for in
+ * qla2x00_process_response_queue() to see if a handle coming back in a
+ * multi-complete should come to the tgt driver or be handled there by qla2xxx
+ */
+#define CTIO_COMPLETION_HANDLE_MARK	BIT_29
+#if (CTIO_COMPLETION_HANDLE_MARK <= MAX_OUTSTANDING_COMMANDS)
+#error "Hackish CTIO_COMPLETION_HANDLE_MARK no longer larger than MAX_OUTSTANDING_COMMANDS"
+#endif
+#define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)
+
+/* Used to mark CTIO as intermediate */
+#define CTIO_INTERMEDIATE_HANDLE_MARK	BIT_30
+
+#ifndef OF_SS_MODE_0
+/*
+ * ISP target entries - Flags bit definitions.
+ */
+#define OF_SS_MODE_0        0
+#define OF_SS_MODE_1        1
+#define OF_SS_MODE_2        2
+#define OF_SS_MODE_3        3
+
+#define OF_EXPL_CONF        BIT_5       /* Explicit Confirmation Requested */
+#define OF_DATA_IN          BIT_6       /* Data in to initiator */
+					/*  (data from target to initiator) */
+#define OF_DATA_OUT         BIT_7       /* Data out from initiator */
+					/*  (data from initiator to target) */
+#define OF_NO_DATA          (BIT_7 | BIT_6)
+#define OF_INC_RC           BIT_8       /* Increment command resource count */
+#define OF_FAST_POST        BIT_9       /* Enable mailbox fast posting. */
+#define OF_CONF_REQ         BIT_13      /* Confirmation Requested */
+#define OF_TERM_EXCH        BIT_14      /* Terminate exchange */
+#define OF_SSTS             BIT_15      /* Send SCSI status */
+#endif
+
+#ifndef QLA_TGT_DATASEGS_PER_CMD32
+#define QLA_TGT_DATASEGS_PER_CMD32	3
+#define QLA_TGT_DATASEGS_PER_CONT32	7
+#define QLA_TGT_MAX_SG32(ql) \
+   (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0)
+
+#define QLA_TGT_DATASEGS_PER_CMD64	2
+#define QLA_TGT_DATASEGS_PER_CONT64	5
+#define QLA_TGT_MAX_SG64(ql) \
+   (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0)
+#endif
+
+#ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
+#define QLA_TGT_DATASEGS_PER_CMD_24XX	1
+#define QLA_TGT_DATASEGS_PER_CONT_24XX	5
+#define QLA_TGT_MAX_SG_24XX(ql) \
+   (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
+#endif
+#endif
+
+#define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha))				\
+				 ? le16_to_cpu((iocb)->u.isp2x.target.extended)	\
+				 : (uint16_t)(iocb)->u.isp2x.target.id.standard)
+
+#ifndef IMMED_NOTIFY_TYPE
+#define IMMED_NOTIFY_TYPE 0x0D		/* Immediate notify entry. */
+/*
+ * ISP queue -	immediate notify entry structure definition.
+ *		This is sent by the ISP to the Target driver.
+ *		This IOCB would have report of events sent by the
+ *		initiator, that needs to be handled by the target
+ *		driver immediately.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	union {
+		struct {
+			uint32_t sys_define_2; /* System defined. */
+			target_id_t target;
+			uint16_t lun;
+			uint8_t  target_id;
+			uint8_t  reserved_1;
+			uint16_t status_modifier;
+			uint16_t status;
+			uint16_t task_flags;
+			uint16_t seq_id;
+			uint16_t srr_rx_id;
+			uint32_t srr_rel_offs;
+			uint16_t srr_ui;
+#define SRR_IU_DATA_IN	0x1
+#define SRR_IU_DATA_OUT	0x5
+#define SRR_IU_STATUS	0x7
+			uint16_t srr_ox_id;
+			uint8_t reserved_2[28];
+		} isp2x;
+		struct {
+			uint32_t reserved;
+			uint16_t nport_handle;
+			uint16_t reserved_2;
+			uint16_t flags;
+#define NOTIFY24XX_FLAGS_GLOBAL_TPRLO   BIT_1
+#define NOTIFY24XX_FLAGS_PUREX_IOCB     BIT_0
+			uint16_t srr_rx_id;
+			uint16_t status;
+			uint8_t  status_subcode;
+			uint8_t  reserved_3;
+			uint32_t exchange_address;
+			uint32_t srr_rel_offs;
+			uint16_t srr_ui;
+			uint16_t srr_ox_id;
+			uint8_t  reserved_4[19];
+			uint8_t  vp_index;
+			uint32_t reserved_5;
+			uint8_t  port_id[3];
+			uint8_t  reserved_6;
+		} isp24;
+	} u;
+	uint16_t reserved_7;
+	uint16_t ox_id;
+} __attribute__((packed)) imm_ntfy_from_isp_t;
+#endif
+
+#ifndef NOTIFY_ACK_TYPE
+#define NOTIFY_ACK_TYPE 0x0E	  /* Notify acknowledge entry. */
+/*
+ * ISP queue -	notify acknowledge entry structure definition.
+ *		This is sent to the ISP from the target driver.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	union {
+		struct {
+			uint32_t sys_define_2; /* System defined. */
+			target_id_t target;
+			uint8_t	 target_id;
+			uint8_t	 reserved_1;
+			uint16_t flags;
+			uint16_t resp_code;
+			uint16_t status;
+			uint16_t task_flags;
+			uint16_t seq_id;
+			uint16_t srr_rx_id;
+			uint32_t srr_rel_offs;
+			uint16_t srr_ui;
+			uint16_t srr_flags;
+			uint16_t srr_reject_code;
+			uint8_t  srr_reject_vendor_uniq;
+			uint8_t  srr_reject_code_expl;
+			uint8_t  reserved_2[24];
+		} isp2x;
+		struct {
+			uint32_t handle;
+			uint16_t nport_handle;
+			uint16_t reserved_1;
+			uint16_t flags;
+			uint16_t srr_rx_id;
+			uint16_t status;
+			uint8_t  status_subcode;
+			uint8_t  reserved_3;
+			uint32_t exchange_address;
+			uint32_t srr_rel_offs;
+			uint16_t srr_ui;
+			uint16_t srr_flags;
+			uint8_t  reserved_4[19];
+			uint8_t  vp_index;
+			uint8_t  srr_reject_vendor_uniq;
+			uint8_t  srr_reject_code_expl;
+			uint8_t  srr_reject_code;
+			uint8_t  reserved_5[5];
+		} isp24;
+	} u;
+	uint8_t  reserved[2];
+	uint16_t ox_id;
+} __attribute__((packed)) nack_to_isp_t;
+#define NOTIFY_ACK_SRR_FLAGS_ACCEPT	0
+#define NOTIFY_ACK_SRR_FLAGS_REJECT	1
+
+#define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM	0x9
+
+#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL		0
+#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA	0x2a
+
+#define NOTIFY_ACK_SUCCESS      0x01
+#endif
+
+#ifndef ACCEPT_TGT_IO_TYPE
+#define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
+#endif
+
+#ifndef CONTINUE_TGT_IO_TYPE
+#define CONTINUE_TGT_IO_TYPE 0x17
+/*
+ * ISP queue -	Continue Target I/O (CTIO) entry for status mode 0 structure.
+ *		This structure is sent to the ISP 2xxx from target driver.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	uint32_t handle;		    /* System defined handle */
+	target_id_t target;
+	uint16_t rx_id;
+	uint16_t flags;
+	uint16_t status;
+	uint16_t timeout;		    /* 0 = 30 seconds, 0xFFFF = disable */
+	uint16_t dseg_count;		    /* Data segment count. */
+	uint32_t relative_offset;
+	uint32_t residual;
+	uint16_t reserved_1[3];
+	uint16_t scsi_status;
+	uint32_t transfer_length;
+	uint32_t dseg_0_address;	    /* Data segment 0 address. */
+	uint32_t dseg_0_length;		    /* Data segment 0 length. */
+	uint32_t dseg_1_address;	    /* Data segment 1 address. */
+	uint32_t dseg_1_length;		    /* Data segment 1 length. */
+	uint32_t dseg_2_address;	    /* Data segment 2 address. */
+	uint32_t dseg_2_length;		    /* Data segment 2 length. */
+} __attribute__((packed)) ctio_to_2xxx_t;
+#define ATIO_PATH_INVALID       0x07
+#define ATIO_CANT_PROV_CAP      0x16
+#define ATIO_CDB_VALID          0x3D
+
+#define ATIO_EXEC_READ          BIT_1
+#define ATIO_EXEC_WRITE         BIT_0
+#endif
+
+#ifndef CTIO_A64_TYPE
+#define CTIO_A64_TYPE 0x1F
+#define CTIO_SUCCESS			0x01
+#define CTIO_ABORTED			0x02
+#define CTIO_INVALID_RX_ID		0x08
+#define CTIO_TIMEOUT			0x0B
+#define CTIO_LIP_RESET			0x0E
+#define CTIO_TARGET_RESET		0x17
+#define CTIO_PORT_UNAVAILABLE		0x28
+#define CTIO_PORT_LOGGED_OUT		0x29
+#define CTIO_PORT_CONF_CHANGED		0x2A
+#define CTIO_SRR_RECEIVED		0x45
+#endif
+
+#ifndef CTIO_RET_TYPE
+#define CTIO_RET_TYPE	0x17		/* CTIO return entry */
+#define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */
+
+typedef struct {
+	uint8_t  r_ctl;
+	uint8_t  d_id[3];
+	uint8_t  cs_ctl;
+	uint8_t  s_id[3];
+	uint8_t  type;
+	uint8_t  f_ctl[3];
+	uint8_t  seq_id;
+	uint8_t  df_ctl;
+	uint16_t seq_cnt;
+	uint16_t ox_id;
+	uint16_t rx_id;
+	uint32_t parameter;
+} __attribute__((packed)) fcp_hdr_t;
+
+typedef struct {
+	uint8_t  d_id[3];
+	uint8_t  r_ctl;
+	uint8_t  s_id[3];
+	uint8_t  cs_ctl;
+	uint8_t  f_ctl[3];
+	uint8_t  type;
+	uint16_t seq_cnt;
+	uint8_t  df_ctl;
+	uint8_t  seq_id;
+	uint16_t rx_id;
+	uint16_t ox_id;
+	uint32_t parameter;
+} __attribute__((packed)) fcp_hdr_le_t;
+
+#define F_CTL_EXCH_CONTEXT_RESP	BIT_23
+#define F_CTL_SEQ_CONTEXT_RESIP	BIT_22
+#define F_CTL_LAST_SEQ		BIT_20
+#define F_CTL_END_SEQ		BIT_19
+#define F_CTL_SEQ_INITIATIVE	BIT_16
+
+#define R_CTL_BASIC_LINK_SERV	0x80
+#define R_CTL_B_ACC		0x4
+#define R_CTL_B_RJT		0x5
+
+typedef struct {
+	uint64_t lun;
+	uint8_t  cmnd_ref;
+	uint8_t  task_attr:3;
+	uint8_t  reserved:5;
+	uint8_t  task_mgmt_flags;
+#define FCP_CMND_TASK_MGMT_CLEAR_ACA		6
+#define FCP_CMND_TASK_MGMT_TARGET_RESET		5
+#define FCP_CMND_TASK_MGMT_LU_RESET		4
+#define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET	2
+#define FCP_CMND_TASK_MGMT_ABORT_TASK_SET	1
+	uint8_t  wrdata:1;
+	uint8_t  rddata:1;
+	uint8_t  add_cdb_len:6;
+	uint8_t  cdb[16];
+	/*
+	 * add_cdb is optional and can absent from atio7_fcp_cmnd_t. Size 4 only to
+	 * make sizeof(atio7_fcp_cmnd_t) be as expected by BUILD_BUG_ON() in
+	 * qla_tgt_init().
+	 */
+	uint8_t  add_cdb[4];
+	/* uint32_t data_length; */
+} __attribute__((packed)) atio7_fcp_cmnd_t;
+
+/*
+ * ISP queue -	Accept Target I/O (ATIO) type entry IOCB structure.
+ *		This is sent from the ISP to the target driver.
+ */
+typedef struct {
+	union {
+		struct {
+			uint16_t entry_hdr;
+			uint8_t  sys_define;   /* System defined. */
+			uint8_t  entry_status; /* Entry Status.   */
+			uint32_t sys_define_2; /* System defined. */
+			target_id_t target;
+			uint16_t rx_id;
+			uint16_t flags;
+			uint16_t status;
+			uint8_t  command_ref;
+			uint8_t  task_codes;
+			uint8_t  task_flags;
+			uint8_t  execution_codes;
+			uint8_t  cdb[MAX_CMDSZ];
+			uint32_t data_length;
+			uint16_t lun;
+			uint8_t  initiator_port_name[WWN_SIZE]; /* on qla23xx */
+			uint16_t reserved_32[6];
+			uint16_t ox_id;
+		} isp2x;
+		struct {
+			uint16_t entry_hdr;
+			uint8_t  fcp_cmnd_len_low;
+			uint8_t  fcp_cmnd_len_high:4;
+			uint8_t  attr:4;
+			uint32_t exchange_addr;
+#define ATIO_EXCHANGE_ADDRESS_UNKNOWN	0xFFFFFFFF
+			fcp_hdr_t fcp_hdr;
+			atio7_fcp_cmnd_t fcp_cmnd;
+		} isp24;
+		struct {
+			uint8_t  entry_type;	/* Entry type. */
+			uint8_t  entry_count;	/* Entry count. */
+			uint8_t  data[58];
+			uint32_t signature;
+#define ATIO_PROCESSED 0xDEADDEAD		/* Signature */
+		} raw;
+	} u;
+} __attribute__((packed)) atio_from_isp_t;
+
+#define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
+
+/*
+ * ISP queue -	Continue Target I/O (ATIO) type 7 entry (for 24xx) structure.
+ *		This structure is sent to the ISP 24xx from the target driver.
+ */
+
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	uint32_t handle;		    /* System defined handle */
+	uint16_t nport_handle;
+#define CTIO7_NHANDLE_UNRECOGNIZED	0xFFFF
+	uint16_t timeout;
+	uint16_t dseg_count;		    /* Data segment count. */
+	uint8_t  vp_index;
+	uint8_t  add_flags;
+	uint8_t  initiator_id[3];
+	uint8_t  reserved;
+	uint32_t exchange_addr;
+	union {
+		struct {
+			uint16_t reserved1;
+			uint16_t flags;
+			uint32_t residual;
+			uint16_t ox_id;
+			uint16_t scsi_status;
+			uint32_t relative_offset;
+			uint32_t reserved2;
+			uint32_t transfer_length;
+			uint32_t reserved3;
+			uint32_t dseg_0_address[2]; /* Data segment 0 address. */
+			uint32_t dseg_0_length; /* Data segment 0 length. */
+		} status0;
+		struct {
+			uint16_t sense_length;
+			uint16_t flags;
+			uint32_t residual;
+			uint16_t ox_id;
+			uint16_t scsi_status;
+			uint16_t response_len;
+			uint16_t reserved;
+			uint8_t sense_data[24];
+		} status1;
+	} u;
+} __attribute__((packed)) ctio7_to_24xx_t;
+
+/*
+ * ISP queue - CTIO type 7 from ISP 24xx to target driver returned entry structure.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	uint32_t handle;		    /* System defined handle */
+	uint16_t status;
+	uint16_t timeout;
+	uint16_t dseg_count;		    /* Data segment count. */
+	uint8_t  vp_index;
+	uint8_t  reserved1[5];
+	uint32_t exchange_address;
+	uint16_t reserved2;
+	uint16_t flags;
+	uint32_t residual;
+	uint16_t ox_id;
+	uint16_t reserved3;
+	uint32_t relative_offset;
+	uint8_t  reserved4[24];
+} __attribute__((packed)) ctio7_from_24xx_t;
+
+/* CTIO7 flags values */
+#define CTIO7_FLAGS_SEND_STATUS		BIT_15
+#define CTIO7_FLAGS_TERMINATE		BIT_14
+#define CTIO7_FLAGS_CONFORM_REQ		BIT_13
+#define CTIO7_FLAGS_DONT_RET_CTIO	BIT_8
+#define CTIO7_FLAGS_STATUS_MODE_0	0
+#define CTIO7_FLAGS_STATUS_MODE_1	BIT_6
+#define CTIO7_FLAGS_EXPLICIT_CONFORM	BIT_5
+#define CTIO7_FLAGS_CONFIRM_SATISF	BIT_4
+#define CTIO7_FLAGS_DSD_PTR		BIT_2
+#define CTIO7_FLAGS_DATA_IN		BIT_1
+#define CTIO7_FLAGS_DATA_OUT		BIT_0
+
+#define ELS_PLOGI			0x3
+#define ELS_FLOGI			0x4
+#define ELS_LOGO			0x5
+#define ELS_PRLI			0x20
+#define ELS_PRLO			0x21
+#define ELS_TPRLO			0x24
+#define ELS_PDISC			0x50
+#define ELS_ADISC			0x52
+
+/*
+ * ISP queue - ABTS received/response entries structure definition for 24xx.
+ */
+#define ABTS_RECV_24XX		0x54 /* ABTS received (for 24xx) */
+#define ABTS_RESP_24XX		0x55 /* ABTS responce (for 24xx) */
+
+/*
+ * ISP queue -	ABTS received IOCB entry structure definition for 24xx.
+ *		The ABTS BLS received from the wire is sent to the
+ *		target driver by the ISP 24xx.
+ *		The IOCB is placed on the response queue.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	uint8_t  reserved_1[6];
+	uint16_t nport_handle;
+	uint8_t  reserved_2[2];
+	uint8_t  vp_index;
+	uint8_t  reserved_3:4;
+	uint8_t  sof_type:4;
+	uint32_t exchange_address;
+	fcp_hdr_le_t fcp_hdr_le;
+	uint8_t  reserved_4[16];
+	uint32_t exchange_addr_to_abort;
+} __attribute__((packed)) abts_recv_from_24xx_t;
+
+#define ABTS_PARAM_ABORT_SEQ		BIT_0
+
+typedef struct {
+	uint16_t reserved;
+	uint8_t  seq_id_last;
+	uint8_t  seq_id_valid;
+#define SEQ_ID_VALID	0x80
+#define SEQ_ID_INVALID	0x00
+	uint16_t rx_id;
+	uint16_t ox_id;
+	uint16_t high_seq_cnt;
+	uint16_t low_seq_cnt;
+} __attribute__((packed)) ba_acc_le_t;
+
+typedef struct {
+	uint8_t vendor_uniq;
+	uint8_t reason_expl;
+	uint8_t reason_code;
+#define BA_RJT_REASON_CODE_INVALID_COMMAND	0x1
+#define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM	0x9
+	uint8_t reserved;
+} __attribute__((packed)) ba_rjt_le_t;
+
+/*
+ * ISP queue -	ABTS Response IOCB entry structure definition for 24xx.
+ *		The ABTS response to the ABTS received is sent by the
+ *		target driver to the ISP 24xx.
+ *		The IOCB is placed on the request queue.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	uint32_t handle;
+	uint16_t reserved_1;
+	uint16_t nport_handle;
+	uint16_t control_flags;
+#define ABTS_CONTR_FLG_TERM_EXCHG	BIT_0
+	uint8_t  vp_index;
+	uint8_t  reserved_3:4;
+	uint8_t  sof_type:4;
+	uint32_t exchange_address;
+	fcp_hdr_le_t fcp_hdr_le;
+	union {
+		ba_acc_le_t ba_acct;
+		ba_rjt_le_t ba_rjt;
+	} __attribute__((packed)) payload;
+	uint32_t reserved_4;
+	uint32_t exchange_addr_to_abort;
+} __attribute__((packed)) abts_resp_to_24xx_t;
+
+/*
+ * ISP queue -	ABTS Response IOCB from ISP24xx Firmware entry structure.
+ *		The ABTS response with completion status to the ABTS response
+ * 		(sent by the target driver to the ISP 24xx) is sent by the
+ *		ISP24xx firmware to the target driver.
+ *		The IOCB is placed on the response queue.
+ */
+typedef struct {
+	uint8_t	 entry_type;		    /* Entry type. */
+	uint8_t	 entry_count;		    /* Entry count. */
+	uint8_t	 sys_define;		    /* System defined. */
+	uint8_t	 entry_status;		    /* Entry Status. */
+	uint32_t handle;
+	uint16_t compl_status;
+#define ABTS_RESP_COMPL_SUCCESS		0
+#define ABTS_RESP_COMPL_SUBCODE_ERROR	0x31
+	uint16_t nport_handle;
+	uint16_t reserved_1;
+	uint8_t  reserved_2;
+	uint8_t  reserved_3:4;
+	uint8_t  sof_type:4;
+	uint32_t exchange_address;
+	fcp_hdr_le_t fcp_hdr_le;
+	uint8_t reserved_4[8];
+	uint32_t error_subcode1;
+#define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM	0x1E
+	uint32_t error_subcode2;
+	uint32_t exchange_addr_to_abort;
+} __attribute__((packed)) abts_resp_from_24xx_fw_t;
+
+/********************************************************************\
+ * Type Definitions used by initiator & target halves
+\********************************************************************/
+
+struct qla_tgt_mgmt_cmd;
+struct qla_tgt_sess;
+
+/*
+ * This structure provides a template of function calls that the
+ * target driver (from within qla_target.c) can issue to the
+ * target module (tcm_qla2xxx).
+ */
+struct qla_tgt_func_tmpl {
+
+	int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
+			unsigned char *, uint32_t, int, int, int);
+	int (*handle_data)(struct qla_tgt_cmd *);
+	int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t, uint32_t);
+	void (*free_cmd)(struct qla_tgt_cmd *);
+	void (*free_session)(struct qla_tgt_sess *);
+
+	int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
+					void *, uint8_t *, uint16_t);
+	struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
+						const uint16_t);
+	struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
+						const uint8_t *);
+	void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
+	void (*put_sess)(struct qla_tgt_sess *);
+};
+
+int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
+
+#include <target/target_core_base.h>
+
+#define QLA_TGT_TIMEOUT			10	/* in seconds */
+
+#define QLA_TGT_MAX_HW_PENDING_TIME	60 /* in seconds */
+
+/* Immediate notify status constants */
+#define IMM_NTFY_LIP_RESET          0x000E
+#define IMM_NTFY_LIP_LINK_REINIT    0x000F
+#define IMM_NTFY_IOCB_OVERFLOW      0x0016
+#define IMM_NTFY_ABORT_TASK         0x0020
+#define IMM_NTFY_PORT_LOGOUT        0x0029
+#define IMM_NTFY_PORT_CONFIG        0x002A
+#define IMM_NTFY_GLBL_TPRLO         0x002D
+#define IMM_NTFY_GLBL_LOGO          0x002E
+#define IMM_NTFY_RESOURCE           0x0034
+#define IMM_NTFY_MSG_RX             0x0036
+#define IMM_NTFY_SRR                0x0045
+#define IMM_NTFY_ELS                0x0046
+
+/* Immediate notify task flags */
+#define IMM_NTFY_TASK_MGMT_SHIFT    8
+
+#define QLA_TGT_CLEAR_ACA               0x40
+#define QLA_TGT_TARGET_RESET            0x20
+#define QLA_TGT_LUN_RESET               0x10
+#define QLA_TGT_CLEAR_TS                0x04
+#define QLA_TGT_ABORT_TS                0x02
+#define QLA_TGT_ABORT_ALL_SESS          0xFFFF
+#define QLA_TGT_ABORT_ALL               0xFFFE
+#define QLA_TGT_NEXUS_LOSS_SESS         0xFFFD
+#define QLA_TGT_NEXUS_LOSS              0xFFFC
+
+/* Notify Acknowledge flags */
+#define NOTIFY_ACK_RES_COUNT        BIT_8
+#define NOTIFY_ACK_CLEAR_LIP_RESET  BIT_5
+#define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4
+
+/* Command's states */
+#define QLA_TGT_STATE_NEW               0	/* New command and target processing it */
+#define QLA_TGT_STATE_NEED_DATA         1	/* target needs data to continue */
+#define QLA_TGT_STATE_DATA_IN           2	/* Data arrived and target is processing */
+#define QLA_TGT_STATE_PROCESSED         3	/* target done processing */
+#define QLA_TGT_STATE_ABORTED           4	/* Command aborted */
+
+/* Special handles */
+#define QLA_TGT_NULL_HANDLE             0
+#define QLA_TGT_SKIP_HANDLE             (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK)
+
+/* ATIO task_codes field */
+#define ATIO_SIMPLE_QUEUE           0
+#define ATIO_HEAD_OF_QUEUE          1
+#define ATIO_ORDERED_QUEUE          2
+#define ATIO_ACA_QUEUE              4
+#define ATIO_UNTAGGED               5
+
+/* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
+#define	FC_TM_SUCCESS               0
+#define	FC_TM_BAD_FCP_DATA          1
+#define	FC_TM_BAD_CMD               2
+#define	FC_TM_FCP_DATA_MISMATCH     3
+#define	FC_TM_REJECT                4
+#define FC_TM_FAILED                5
+
+/*
+ * Error code of qla_tgt_pre_xmit_response() meaning that cmd's exchange was
+ * terminated, so no more actions is needed and success should be returned
+ * to target.
+ */
+#define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED	0x1717
+
+#if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
+#define pci_dma_lo32(a) (a & 0xffffffff)
+#define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
+#else
+#define pci_dma_lo32(a) (a & 0xffffffff)
+#define pci_dma_hi32(a) 0
+#endif
+
+#define QLA_TGT_SENSE_VALID(sense)  ((sense != NULL) && \
+				(((const uint8_t *)(sense))[0] & 0x70) == 0x70)
+
+struct qla_port_24xx_data {
+	uint8_t port_name[WWN_SIZE];
+	uint16_t loop_id;
+	uint16_t reserved;
+};
+
+struct qla_tgt {
+	struct scsi_qla_host *vha;
+	struct qla_hw_data *ha;
+
+	/*
+	 * To sync between IRQ handlers and qla_tgt_target_release(). Needed,
+	 * because req_pkt() can drop/reaquire HW lock inside. Protected by
+	 * HW lock.
+	 */
+	int irq_cmd_count;
+
+	int datasegs_per_cmd, datasegs_per_cont, sg_tablesize;
+
+	/* Target's flags, serialized by pha->hardware_lock */
+	unsigned int tgt_enable_64bit_addr:1;	/* 64-bits PCI addressing enabled */
+	unsigned int link_reinit_iocb_pending:1;
+	unsigned int tm_to_unknown:1; /* TM to unknown session was sent */
+	unsigned int sess_works_pending:1; /* there are sess_work entries */
+
+	/*
+	 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
+	 * OR hardware_lock for reading.
+	 */
+	int tgt_stop; /* the target mode driver is being stopped */
+	int tgt_stopped; /* the target mode driver has been stopped */
+
+	/* Count of sessions refering qla_tgt. Protected by hardware_lock. */
+	int sess_count;
+
+	/* Protected by hardware_lock. Addition also protected by tgt_mutex. */
+	struct list_head sess_list;
+
+	/* Protected by hardware_lock */
+	struct list_head del_sess_list;
+	struct delayed_work sess_del_work;
+
+	spinlock_t sess_work_lock;
+	struct list_head sess_works_list;
+	struct work_struct sess_work;
+
+	imm_ntfy_from_isp_t link_reinit_iocb;
+	wait_queue_head_t waitQ;
+	int notify_ack_expected;
+	int abts_resp_expected;
+	int modify_lun_expected;
+
+	int ctio_srr_id;
+	int imm_srr_id;
+	spinlock_t srr_lock;
+	struct list_head srr_ctio_list;
+	struct list_head srr_imm_list;
+	struct work_struct srr_work;
+
+	atomic_t tgt_global_resets_count;
+
+	struct list_head tgt_list_entry;
+};
+
+/*
+ * Equivilant to IT Nexus (Initiator-Target)
+ */
+struct qla_tgt_sess {
+	uint16_t loop_id;
+	port_id_t s_id;
+
+	unsigned int conf_compl_supported:1;
+	unsigned int deleted:1;
+	unsigned int local:1;
+	unsigned int tearing_down:1;
+
+	struct se_session *se_sess;
+	struct scsi_qla_host *vha;
+	struct qla_tgt *tgt;
+
+	struct list_head sess_list_entry;
+	unsigned long expires;
+	struct list_head del_list_entry;
+
+	uint8_t port_name[WWN_SIZE];
+	struct work_struct free_work;
+};
+
+struct qla_tgt_cmd {
+	struct qla_tgt_sess *sess;
+	int state;
+	struct se_cmd se_cmd;
+	struct work_struct free_work;
+	struct work_struct work;
+	/* Sense buffer that will be mapped into outgoing status */
+	unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
+
+	unsigned int conf_compl_supported:1;/* to save extra sess dereferences */
+	unsigned int sg_mapped:1;
+	unsigned int free_sg:1;
+	unsigned int aborted:1; /* Needed in case of SRR */
+	unsigned int write_data_transferred:1;
+
+	struct scatterlist *sg;	/* cmd data buffer SG vector */
+	int sg_cnt;		/* SG segments count */
+	int bufflen;		/* cmd buffer length */
+	int offset;
+	uint32_t tag;
+	uint32_t unpacked_lun;
+	enum dma_data_direction dma_data_direction;
+
+	uint16_t loop_id;		    /* to save extra sess dereferences */
+	struct qla_tgt *tgt;		    /* to save extra sess dereferences */
+	struct scsi_qla_host *vha;
+	struct list_head cmd_list;
+
+	atio_from_isp_t atio;
+};
+
+struct qla_tgt_sess_work_param {
+	struct list_head sess_works_list_entry;
+
+#define QLA_TGT_SESS_WORK_ABORT	1
+#define QLA_TGT_SESS_WORK_TM	2
+	int type;
+
+	union {
+		abts_recv_from_24xx_t abts;
+		imm_ntfy_from_isp_t tm_iocb;
+		atio_from_isp_t tm_iocb2;
+	};
+};
+
+struct qla_tgt_mgmt_cmd {
+	uint8_t tmr_func;
+	uint8_t fc_tm_rsp;
+	struct qla_tgt_sess *sess;
+	struct se_cmd se_cmd;
+	unsigned int flags;
+#define QLA24XX_MGMT_SEND_NACK	1
+	union {
+		atio_from_isp_t atio;
+		imm_ntfy_from_isp_t imm_ntfy;
+		abts_recv_from_24xx_t abts;
+	} __attribute__((packed)) orig_iocb;
+};
+
+struct qla_tgt_prm {
+	struct qla_tgt_cmd *cmd;
+	struct qla_tgt *tgt;
+	void *pkt;
+	struct scatterlist *sg;	/* cmd data buffer SG vector */
+	int seg_cnt;
+	int req_cnt;
+	uint16_t rq_result;
+	uint16_t scsi_status;
+	unsigned char *sense_buffer;
+	int sense_buffer_len;
+	int residual;
+	int add_status_pkt;
+};
+
+struct qla_tgt_srr_imm {
+	struct list_head srr_list_entry;
+	int srr_id;
+	imm_ntfy_from_isp_t imm_ntfy;
+};
+
+struct qla_tgt_srr_ctio {
+	struct list_head srr_list_entry;
+	int srr_id;
+	struct qla_tgt_cmd *cmd;
+};
+
+#define QLA_TGT_XMIT_DATA		1
+#define QLA_TGT_XMIT_STATUS		2
+#define QLA_TGT_XMIT_ALL		(QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
+
+#include <linux/version.h>
+
+extern struct qla_tgt_data qla_target;
+/*
+ * Internal function prototypes
+ */
+void qla_tgt_disable_vha(struct scsi_qla_host *);
+
+/*
+ * Function prototypes for qla_target.c logic used by qla2xxx LLD code.
+ */
+extern int qla_tgt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
+extern int qla_tgt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
+extern int qla_tgt_lport_register(struct qla_tgt_func_tmpl *, u64,
+			int (*callback)(struct scsi_qla_host *), void *);
+extern void qla_tgt_lport_deregister(struct scsi_qla_host *);
+extern void qla_tgt_unreg_sess(struct qla_tgt_sess *);
+extern void qla_tgt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
+extern void qla_tgt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
+extern void qla_tgt_set_mode(struct scsi_qla_host *ha);
+extern void qla_tgt_clear_mode(struct scsi_qla_host *ha);
+extern int __init qla_tgt_init(void);
+extern void __exit qla_tgt_exit(void);
+
+static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
+{
+	return ha->host->active_mode & MODE_TARGET;
+}
+
+static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha)
+{
+	return ha->host->active_mode & MODE_INITIATOR;
+}
+
+static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
+{
+	if (ha->host->active_mode & MODE_INITIATOR)
+		ha->host->active_mode &= ~MODE_INITIATOR;
+	else
+		ha->host->active_mode |= MODE_INITIATOR;
+}
+
+/*
+ * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
+ */
+extern void qla_tgt_24xx_atio_pkt_all_vps(struct scsi_qla_host *,
+	atio_from_isp_t *);
+extern void qla_tgt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
+extern int qla_tgt_rdy_to_xfer(struct qla_tgt_cmd *);
+extern int qla_tgt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
+extern void qla_tgt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
+extern void qla_tgt_free_mcmd(struct qla_tgt_mgmt_cmd *);
+extern void qla_tgt_free_cmd(struct qla_tgt_cmd *cmd);
+extern void qla_tgt_ctio_completion(struct scsi_qla_host *, uint32_t);
+extern void qla_tgt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *);
+extern void qla_tgt_enable_vha(struct scsi_qla_host *);
+extern void qla_tgt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
+extern void qla_tgt_rff_id(struct scsi_qla_host *, struct ct_sns_req *);
+extern void qla_tgt_init_atio_q_entries(struct scsi_qla_host *);
+extern void qla_tgt_24xx_process_atio_queue(struct scsi_qla_host *);
+extern void qla_tgt_24xx_config_rings(struct scsi_qla_host *, device_reg_t __iomem *);
+extern void qla_tgt_24xx_config_nvram_stage1(struct scsi_qla_host *, struct nvram_24xx *);
+extern void qla_tgt_24xx_config_nvram_stage2(struct scsi_qla_host *, struct init_cb_24xx *);
+extern int qla_tgt_24xx_process_response_error(struct scsi_qla_host *, struct sts_entry_24xx *);
+extern void qla_tgt_modify_vp_config(struct scsi_qla_host *, struct vp_config_entry_24xx *);
+extern void qla_tgt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *);
+extern int qla_tgt_mem_alloc(struct qla_hw_data *);
+extern void qla_tgt_mem_free(struct qla_hw_data *);
+extern void qla_tgt_stop_phase1(struct qla_tgt *);
+extern void qla_tgt_stop_phase2(struct qla_tgt *);
+
+#endif /* __QLA_TARGET_H */
-- 
1.7.2.5

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