[PATCH 3/8] qla4xxx: OS integration files

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ISP4xxx driver OS files.

Signed-off-by: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
---

 drivers/scsi/Kconfig            |    1 
 drivers/scsi/Makefile           |    1 
 drivers/scsi/qla4xxx/Kconfig    |    5 
 drivers/scsi/qla4xxx/Makefile   |    4 
 drivers/scsi/qla4xxx/ql4_attr.c |  328 ++++++
 drivers/scsi/qla4xxx/ql4_os.c   | 2311 +++++++++++++++++++++++++++++++++++++++
 6 files changed, 2650 insertions(+), 0 deletions(-)
 create mode 100644 drivers/scsi/qla4xxx/Kconfig
 create mode 100644 drivers/scsi/qla4xxx/Makefile
 create mode 100644 drivers/scsi/qla4xxx/ql4_attr.c
 create mode 100644 drivers/scsi/qla4xxx/ql4_os.c

aa7e70e307c0c846eadc5dcfdbdb10f479f61625
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1309,6 +1309,7 @@ config SCSI_QLOGICPTI
 	  module will be called qlogicpti.
 
 source "drivers/scsi/qla2xxx/Kconfig"
+source "drivers/scsi/qla4xxx/Kconfig"
 
 config SCSI_LPFC
 	tristate "Emulex LightPulse Fibre Channel Support"
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -78,6 +78,7 @@ obj-$(CONFIG_SCSI_QLOGIC_ISP)	+= qlogici
 obj-$(CONFIG_SCSI_QLOGIC_FC)	+= qlogicfc.o 
 obj-$(CONFIG_SCSI_QLOGIC_1280)	+= qla1280.o 
 obj-$(CONFIG_SCSI_QLA2XXX)	+= qla2xxx/
+obj-$(CONFIG_SCSI_QLA4XXX)	+= qla4xxx/
 obj-$(CONFIG_SCSI_LPFC)		+= lpfc/
 obj-$(CONFIG_SCSI_PAS16)	+= pas16.o
 obj-$(CONFIG_SCSI_SEAGATE)	+= seagate.o
diff --git a/drivers/scsi/qla4xxx/Kconfig b/drivers/scsi/qla4xxx/Kconfig
new file mode 100644
--- /dev/null
+++ b/drivers/scsi/qla4xxx/Kconfig
@@ -0,0 +1,5 @@
+config SCSI_QLA4XXX
+	tristate "QLogic ISP4XXX host adapter family support"
+	depends on PCI && SCSI
+	---help---
+	This driver supports the QLogic 40xx (ISP4XXX) host adapter family.
diff --git a/drivers/scsi/qla4xxx/Makefile b/drivers/scsi/qla4xxx/Makefile
new file mode 100644
--- /dev/null
+++ b/drivers/scsi/qla4xxx/Makefile
@@ -0,0 +1,4 @@
+obj-$(CONFIG_SCSI_QLA4XXX) += qla4xxx.o
+
+qla4xxx-objs := ql4_os.o ql4_init.o ql4_mbx.o ql4_iocb.o ql4_isr.o \
+		ql4_isns.o ql4_nvram.o ql4_dbg.o
diff --git a/drivers/scsi/qla4xxx/ql4_attr.c b/drivers/scsi/qla4xxx/ql4_attr.c
new file mode 100644
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_attr.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright (c)  2003-2005 QLogic Corporation
+ * QLogic Linux iSCSI Driver
+ *
+ * This program includes a device driver for Linux 2.6 that may be
+ * distributed with QLogic hardware specific firmware binary file.
+ * You may modify and redistribute the device driver code under the
+ * GNU General Public License as published by the Free Software
+ * Foundation (version 2 or a later version) and/or under the
+ * following terms, as applicable:
+ *
+ * 	1. Redistribution of source code must retain the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission.
+ *
+ * You may redistribute the hardware specific firmware binary file
+ * under the following terms:
+ *
+ * 	1. Redistribution of source code (only if applicable),
+ * 	   must retain the above copyright notice, this list of
+ * 	   conditions and the following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission
+ *
+ * REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
+ * THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
+ * CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
+ * OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
+ * TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
+ * ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
+ * COMBINATION WITH THIS PROGRAM.
+ */
+
+#include "ql4_def.h"
+#include <scsi/scsi_transport_iscsi.h>
+
+/* Host attributes. */
+
+static void qla4xxx_get_initiator_name(struct Scsi_Host *shost)
+{
+	scsi_qla_host_t *ha = to_qla_host(shost);
+
+	/* &ha->iscsi_name[0]; */
+	/*  ha->ip_address[0], ha->ip_address[1], ha->ip_address[2], ha->ip_address[3]) */
+	/* ha->subnet_mask[0], ha->subnet_mask[1], ha->subnet_mask[2], ha->subnet_mask[3]) */
+	/* init_fw_cb->GatewayIPAddr[0],
+			init_fw_cb->GatewayIPAddr[1],
+			init_fw_cb->GatewayIPAddr[2],
+			init_fw_cb->GatewayIPAddr[3]) */
+
+}
+
+static void qla4xxx_get_initiator_alias(struct Scsi_Host *shost)
+{
+	scsi_qla_host_t *ha = to_qla_host(shost);
+}
+
+/* Target attributes. */
+static void qla4xxx_get_isid(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(shost);
+	struct ddb_entry *ddb;
+}
+
+static void qla4xxx_get_tsih(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(shost);
+	struct ddb_entry *ddb = qla4xxx_lookup_ddb_by_fw_index(ha, starget->id);
+}
+
+static void qla4xxx_get_ip_address(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(shost);
+	struct ddb_entry *ddb = qla4xxx_lookup_ddb_by_fw_index(ha, starget->id);
+
+	if (ddb)
+		memcpy(&iscsi_sin_addr(starget), &ddb->ipaddress,
+		    ISCSI_IPADDR_SIZE);
+}
+
+static void qla4xxx_get_port(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(shost);
+	struct ddb_entry *ddb = qla4xxx_lookup_ddb_by_fw_index(ha, starget->id);
+
+	struct sockaddr_in *addr = (struct sockaddr_in *)&ddb->addr;
+	iscsi_port(starget) = addr->sin_port;
+}
+
+static void qla4xxx_get_tpgt(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(shost);
+	struct ddb_entry *ddb = qla4xxx_lookup_ddb_by_fw_index(ha, starget->id);
+
+	iscsi_tpgt(starget) = ddb->portal_group_tag;
+}
+
+static void qla4xxx_get_isid(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(shost);
+	struct ddb_entry *ddb = qla4xxx_lookup_ddb_by_fw_index(ha, starget->id);
+
+	memcpy(iscsi_isid(starget), ddb->isid, sizeof(ddb->isid));
+}
+
+static void qla4xxx_get_initial_r2t(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_immediate_data(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_header_digest(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_data_digest(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_max_burst_len(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_first_burst_len(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_max_recv_data_segment_len(struct scsi_target *starget)
+{
+}
+
+static void qla4xxx_get_starget_loss_tmo(struct scsi_target *starget)
+{
+	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(host);
+
+	iscsi_starget_dev_loss_tmo(starget) = ha->port_down_retry_count + 5;
+}
+
+static void
+qla4xxx_set_starget_loss_tmo(struct scsi_target *starget, uint32_t timeout)
+{
+	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
+	scsi_qla_host_t *ha = to_qla_host(host);
+
+	if (timeout)
+		ha->port_down_retry_count = timeout;
+	else
+		ha->port_down_retry_count = 1;
+}
+
+static struct fc_function_template qla4xxx_transport_functions = {
+	.get_isid = qla4xxx_get_isid,
+	.show_isid = 1,
+	.get_tsih = qla4xxx_get_tsih,
+	.show_tsih = 1,
+	.get_port = qla4xxx_get_target_port,
+	.show_port = 1,
+	.get_tpgt = qla4xxx_get_tpgt,
+	.show_tpgt = 1,
+	.get_ip_address = qla4xxx_get_target_ip_address,
+	.show_ip_address = 1,
+	.get_initial_r2t = qla4xxx_get_initial_r2t,
+	.show_initial_r2t = 1,
+	.get_immediate_data = qla4xxx_get_immediate_data,
+	.show_immediate_data = 1,
+	.get_header_digest = qla4xxx_get_header_digest,
+	.show_header_digest = 1,
+	.get_data_digest = qla4xxx_get_data_digest,
+	.show_data_digest = 1,
+	.get_max_burst_len = qla4xxx_get_max_burst_len,
+	.show_max_burst_len = 1,
+	.get_first_burst_len = qla4xxx_get_first_burst_len,
+	.show_first_burst_len = 1,
+	.get_max_recv_data_segment_len = qla4xxx_get_max_recv_data_segment_len,
+	.show_max_recv_data_segment_len = 1,
+	.get_target_name = qla4xxx_get_target_name,
+	.show_target_name = 1,
+	.get_target_alias = qla4xxx_get_target_alias,
+	.show_target_alias = 1,
+	.get_initiator_alias = qla4xxx_get_initiator_alias,
+	.show_initiator_alias = 1,
+	.get_initiator_name = qla4xxx_get_initiator_name,
+	.show_initiator_name = 1,
+
+	.get_starget_dev_loss_tmo = qla4xxx_get_starget_loss_tmo,
+	.set_starget_dev_loss_tmo = qla4xxx_set_starget_loss_tmo,
+	.show_starget_dev_loss_tmo = 1,
+
+};
+
+struct scsi_transport_template *qla4xxx_alloc_transport_tmpl(void)
+{
+	return (iscsi_attach_transport(&qla4xxx_transport_functions));
+}
+
+/* SYSFS attributes --------------------------------------------------------- */
+
+static ssize_t
+qla4xxx_sysfs_read_nvram(struct kobject *kobj, char *buf, loff_t off,
+    size_t count)
+{
+	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
+	    struct device, kobj)));
+	uint16_t *witer;
+	unsigned long flags;
+	uint16_t cnt;
+
+	if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t))
+		return 0;
+
+	/* Read NVRAM. */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	qla4xxx_lock_nvram_access(ha);
+	witer = (uint16_t *) buf;
+	for (cnt = 0; cnt < count / 2; cnt++) {
+		*witer = cpu_to_le16(qla2x00_get_nvram_word(ha,
+		    cnt + ha->nvram_base));
+		witer++;
+	}
+	qla4xxx_unlock_nvram_access(ha);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return (count);
+}
+
+static ssize_t
+qla4xxx_sysfs_write_nvram(struct kobject *kobj, char *buf, loff_t off,
+    size_t count)
+{
+	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
+	    struct device, kobj)));
+	uint8_t *iter;
+	uint16_t *witer;
+	unsigned long flags;
+	uint16_t cnt;
+	uint8_t chksum;
+
+	if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t))
+		return 0;
+
+	/* Checksum NVRAM. */
+	iter = (uint8_t *) buf;
+	chksum = 0;
+	for (cnt = 0; cnt < count - 1; cnt++)
+		chksum += *iter++;
+	chksum = ~chksum + 1;
+	*iter = chksum;
+
+	/* Write NVRAM. */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	qla4xxx_lock_nvram_access(ha);
+	qla4xxx_release_nvram_protection(ha);
+	witer = (uint16_t *) buf;
+	for (cnt = 0; cnt < count / 2; cnt++) {
+		qla4xxx_write_nvram_word(ha, cnt + ha->nvram_base,
+		    cpu_to_le16(*witer));
+		witer++;
+	}
+	qla4xxx_unlock_nvram_access(ha);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return (count);
+}
+
+static struct bin_attribute sysfs_nvram_attr = {
+	.attr = {
+		 .name = "nvram",
+		 .mode = S_IRUSR | S_IWUSR,
+		 .owner = THIS_MODULE,
+		 },
+	.size = sizeof(nvram_t),
+	.read = qla4xxx_sysfs_read_nvram,
+	.write = qla4xxx_sysfs_write_nvram,
+};
+
+void qla4xxx_alloc_sysfs_attr(scsi_qla_host_t * ha)
+{
+	struct Scsi_Host *host = ha->host;
+
+	sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
+	sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
+}
+
+void qla4xxx_free_sysfs_attr(scsi_qla_host_t * ha)
+{
+	struct Scsi_Host *host = ha->host;
+
+	sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
+	sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
+}
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
new file mode 100644
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -0,0 +1,2311 @@
+/*
+ * Copyright (c)  2003-2005 QLogic Corporation
+ * QLogic Linux iSCSI Driver
+ *
+ * This program includes a device driver for Linux 2.6 that may be
+ * distributed with QLogic hardware specific firmware binary file.
+ * You may modify and redistribute the device driver code under the
+ * GNU General Public License as published by the Free Software
+ * Foundation (version 2 or a later version) and/or under the
+ * following terms, as applicable:
+ *
+ * 	1. Redistribution of source code must retain the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission.
+ *
+ * You may redistribute the hardware specific firmware binary file
+ * under the following terms:
+ *
+ * 	1. Redistribution of source code (only if applicable),
+ * 	   must retain the above copyright notice, this list of
+ * 	   conditions and the following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission
+ *
+ * REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
+ * THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
+ * CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
+ * OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
+ * TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
+ * ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
+ * COMBINATION WITH THIS PROGRAM.
+ */
+
+#include "ql4_def.h"
+
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#include <linux/moduleparam.h>
+
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_iscsi.h>
+
+/*
+ * Driver version
+ */
+char qla4xxx_version_str[40];
+
+/*
+ * SRB allocation cache
+ */
+kmem_cache_t *srb_cachep;
+
+/*
+ * List of host adapters
+ */
+struct list_head qla4xxx_hostlist = LIST_HEAD_INIT(qla4xxx_hostlist);
+rwlock_t qla4xxx_hostlist_lock = RW_LOCK_UNLOCKED;
+int qla4xxx_hba_count = 0;
+
+/*
+ * Module parameter information and variables
+ */
+int ql4xdiscoverywait = 60;
+module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time");
+int ql4xdontresethba = 0;
+module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xdontresethba,
+		 "Dont reset the HBA when the driver gets 0x8002 AEN "
+		 " default it will reset hba :0"
+		 " set to 1 to avoid resetting HBA");
+int ql4xcmdretrycount = 20;
+module_param(ql4xcmdretrycount, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xcmdretrycount,
+		 "Maximum number of mid-layer retries allowed for a command.  "
+		 "Default value is 20");
+int ql4xmaxqdepth = 0;
+module_param(ql4xmaxqdepth, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xmaxqdepth,
+		 "Maximum queue depth to report for target devices.");
+
+int extended_error_logging = 0;	/* 0 = off, 1 = log errors */
+module_param(extended_error_logging, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(extended_error_logging,
+		 "Option to enable extended error logging, "
+		 "Default is 0 - no logging, 1 - debug " "logging");
+
+int displayConfig = 0;
+module_param(displayConfig, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(displayConfig,
+		 "If 1 then display the configuration used in "
+		 "/etc/modules.conf.");
+
+char *ql4xdevconf = NULL;
+
+/*
+ * SCSI host template entry points
+ */
+
+static int qla4xxx_mem_alloc(scsi_qla_host_t * ha);
+static void qla4xxx_mem_free(scsi_qla_host_t * ha);
+static void qla4xxx_timer(scsi_qla_host_t *ha);
+static int qla4xxx_do_dpc(void *data);
+void qla4xxx_display_config(void);
+void qla4xxx_add_timer_to_cmd(srb_t * srb, int timeout);
+static void qla4xxx_flush_active_srbs(scsi_qla_host_t * ha);
+int qla4xxx_reset_target(scsi_qla_host_t * ha, ddb_entry_t * ddb_entry);
+int qla4xxx_recover_adapter(scsi_qla_host_t * ha, uint8_t renew_ddb_list);
+void qla4xxx_config_dma_addressing(scsi_qla_host_t * ha);
+
+CONTINUE_ENTRY *qla4xxx_alloc_cont_entry(scsi_qla_host_t * ha);
+
+static int qla4xxx_iospace_config(scsi_qla_host_t * ha);
+
+static int __devinit qla4xxx_probe_adapter(struct pci_dev *,
+    const struct pci_device_id *);
+static void __devexit qla4xxx_remove_adapter(struct pci_dev *);
+static void qla4xxx_free_adapter(scsi_qla_host_t * ha);
+
+/*
+ * SCSI host template entry points
+ */
+static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
+    void (*done) (struct scsi_cmnd *));
+static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_bus_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_slave_alloc(struct scsi_device *device);
+static int qla4xxx_slave_configure(struct scsi_device *device);
+static void qla4xxx_slave_destroy(struct scsi_device *device);
+
+static struct scsi_host_template qla4xxx_driver_template = {
+	.module			= THIS_MODULE,
+	.name			= "qla4xxx",
+	.queuecommand		= qla4xxx_queuecommand,
+
+	.eh_abort_handler	= qla4xxx_eh_abort,
+	.eh_device_reset_handler = qla4xxx_eh_device_reset,
+	.eh_bus_reset_handler	= qla4xxx_eh_bus_reset,
+	.eh_host_reset_handler	= qla4xxx_eh_host_reset,
+
+	.slave_configure	= qla4xxx_slave_configure,
+	.slave_alloc		= qla4xxx_slave_alloc,
+	.slave_destroy		= qla4xxx_slave_destroy,
+
+	.this_id		= -1,
+	.cmd_per_lun		= 3,
+	.use_clustering		= ENABLE_CLUSTERING,
+	.sg_tablesize		= SG_ALL,
+
+	.max_sectors		= 0xFFFF,
+};
+
+/* static struct scsi_transport_template *qla4xxx_transport_template = NULL; */
+
+/*
+ * Timer routines
+ */
+static void
+qla4xxx_start_timer(scsi_qla_host_t * ha, void *func, unsigned long interval)
+{
+	DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
+	    __func__, ha->instance));
+	init_timer(&ha->timer);
+	ha->timer.expires = jiffies + interval * HZ;
+	ha->timer.data = (unsigned long)ha;
+	ha->timer.function = (void (*)(unsigned long))func;
+	add_timer(&ha->timer);
+	ha->timer_active = 1;
+}
+
+static void
+qla4xxx_stop_timer(scsi_qla_host_t * ha)
+{
+	del_timer_sync(&ha->timer);
+	ha->timer_active = 0;
+}
+
+/**************************************************************************
+ * qla4xxx_mark_device_missing
+ *	This routine marks a device missing and resets the relogin retry count.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *	ddb_entry - Pointer to device database entry
+ *
+ * Returns:
+ *	None
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+void
+qla4xxx_mark_device_missing(scsi_qla_host_t * ha, ddb_entry_t * ddb_entry)
+{
+	atomic_set(&ddb_entry->state, DDB_STATE_MISSING);
+	DEBUG3(printk(KERN_INFO "scsi%d:%d:%d: index [%d] marked MISSING\n",
+	    ha->host_no, ddb_entry->bus, ddb_entry->target,
+	    ddb_entry->fw_ddb_index));
+}
+
+static inline srb_t *
+qla4xxx_get_new_srb(scsi_qla_host_t *ha, struct ddb_entry *ddb_entry,
+    struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
+{
+	srb_t *srb;
+
+	srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
+	if (!srb)
+		return srb;
+
+	atomic_set(&srb->ref_count, 1);
+	srb->ha = ha;
+	srb->ddb = ddb_entry;
+	srb->cmd = cmd;
+	srb->flags = 0;
+	CMD_SP(cmd) = (void *)srb;
+	cmd->scsi_done = done;
+
+	return srb;
+}
+
+static void
+qla4xxx_srb_free_dma(scsi_qla_host_t *ha, srb_t *srb)
+{
+	struct scsi_cmnd *cmd = srb->cmd;
+
+	if (srb->flags & SRB_DMA_VALID) {
+		if (cmd->use_sg) {
+			dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
+			    cmd->use_sg, cmd->sc_data_direction);
+		} else if (cmd->request_bufflen) {
+			dma_unmap_single(&ha->pdev->dev, srb->dma_handle,
+			    cmd->request_bufflen, cmd->sc_data_direction);
+		}
+		srb->flags &= ~SRB_DMA_VALID;
+	}
+	CMD_SP(cmd) = NULL;
+}
+
+void
+qla4xxx_srb_compl(scsi_qla_host_t *ha, srb_t *srb)
+{
+	struct scsi_cmnd *cmd = srb->cmd;
+
+	qla4xxx_srb_free_dma(ha, srb);
+
+	mempool_free(srb, ha->srb_mempool);
+
+	cmd->scsi_done(cmd);
+}
+
+/**************************************************************************
+ * qla4xxx_queuecommand
+ *      This routine is invoked by Linux to send a SCSI command to the driver.
+ *
+ * Input:
+ *      cmd - Pointer to Linux's SCSI command structure
+ *      done_fn - Function that the driver calls to notify the SCSI mid-layer
+ *                that the command has been processed.
+ *
+ * Remarks:
+ *    The mid-level driver tries to ensure that queuecommand never gets
+ *    invoked concurrently with itself or the interrupt handler (although
+ *    the interrupt handler may call this routine as part of request-
+ *    completion handling).   Unfortunely, it sometimes calls the scheduler
+ *    in interrupt context which is a big NO! NO!.
+ *
+ * Returns:
+ *      None
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
+{
+	scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
+	struct ddb_entry *ddb_entry = (struct ddb_entry *)cmd->device->hostdata;
+	srb_t *srb;
+	int rval;
+
+	if (!ddb_entry) {
+		cmd->result = DID_NO_CONNECT << 16;
+		goto qc_fail_command;
+	}
+
+	if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+		if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
+			cmd->result = DID_NO_CONNECT << 16;
+			goto qc_fail_command;
+		}
+		goto qc_host_busy;
+	}
+
+	spin_unlock_irq(ha->host->host_lock);
+
+	srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done);
+	if (!srb)
+		goto qc_host_busy_lock;
+
+	rval = qla4xxx_send_command_to_isp(ha, srb);
+	if (rval != QLA_SUCCESS)
+		goto qc_host_busy_free_sp;
+
+	spin_lock_irq(ha->host->host_lock);
+	return 0;
+
+qc_host_busy_free_sp:
+	qla4xxx_srb_free_dma(ha, srb);
+        mempool_free(srb, ha->srb_mempool);
+
+qc_host_busy_lock:
+	spin_lock_irq(ha->host->host_lock);
+
+qc_host_busy:
+	return SCSI_MLQUEUE_HOST_BUSY;
+
+qc_fail_command:
+	done(cmd);
+
+	return 0;
+}
+
+/**************************************************************************
+ * qla4xxx_probe_adapter
+ *    This routine will probe for Qlogic 4010 iSCSI host adapters.
+ *    It returns the number of host adapters of a particular
+ *    type that were found.  It also initializes all data necessary for
+ *    the driver.  It is passed-in the host number, so that it
+ *    knows where its first entry is in the scsi_hosts[] array.
+ *
+ * Input:
+ *
+ * Returns:
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static int __devinit
+qla4xxx_probe_adapter(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int ret = -ENODEV, status;
+	struct Scsi_Host *host;
+	scsi_qla_host_t *ha;
+	uint8_t init_retry_count = 0;
+	unsigned long flags;
+
+	if (pci_enable_device(pdev))
+		return -1;
+
+	host = scsi_host_alloc(&qla4xxx_driver_template,
+	    sizeof(scsi_qla_host_t));
+	if (host == NULL) {
+		printk(KERN_WARNING
+		       "qla4xxx: Couldn't allocate host from scsi layer!\n");
+		goto probe_disable_device;
+	}
+
+	/* Clear our data area */
+	ha = (scsi_qla_host_t *) host->hostdata;
+	memset(ha, 0, sizeof(scsi_qla_host_t));
+
+	/* Save the information from PCI BIOS.  */
+	ha->pdev = pdev;
+	ha->host = host;
+	ha->host_no = host->host_no;
+
+	/* Configure PCI I/O space. */
+	ret = qla4xxx_iospace_config(ha);
+	if (ret)
+		goto probe_failed;
+
+	ql4_printk(KERN_INFO, ha,
+	    "Found an ISP%04x, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
+	    ha->reg);
+
+	qla4xxx_config_dma_addressing(ha);
+
+	/* Initialize lists and spinlocks. */
+	INIT_LIST_HEAD(&ha->ddb_list);
+	INIT_LIST_HEAD(&ha->free_srb_q);
+
+	init_MUTEX(&ha->mbox_sem);
+	init_waitqueue_head(&ha->mailbox_wait_queue);
+
+	spin_lock_init(&ha->hardware_lock);
+	spin_lock_init(&ha->list_lock);
+
+	ha->dpc_pid = -1;
+	init_completion(&ha->dpc_inited);
+	init_completion(&ha->dpc_exited);
+
+	/* Verify iSCSI PCI Funcion Number */
+	if (IS_QLA4010(ha)) {
+		ha->function_number = ISP4010_ISCSI_FUNCTION;
+	} else if (IS_QLA4022(ha)) {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		ha->function_number = (RD_REG_DWORD(&ha->reg->ctrl_status) &
+		    CSR_PCI_FUNC_NUM_MASK) >> 8;
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	}
+	if (PCI_FUNC(pdev->devfn) != ha->function_number) {
+		ql4_printk(KERN_WARNING, ha, "HA function number (0x%x) does "
+		    "not match PCI function number (0x%x)\n",
+		    ha->function_number, PCI_FUNC(pdev->devfn));
+		goto probe_disable_device;
+	}
+
+	/* Allocate dma buffers */
+	if (qla4xxx_mem_alloc(ha)) {
+		ql4_printk(KERN_WARNING, ha,
+		    "[ERROR] Failed to allocate memory for adapter\n");
+
+		ret = -ENOMEM;
+		goto probe_disable_device;
+	}
+
+	/*
+	 * Initialize the Host adapter request/response queues and
+	 * firmware
+	 * NOTE: interrupts enabled upon successful completion
+	 */
+	status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
+	while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) {
+		DEBUG2(printk("scsi: %s: retrying adapter initialization "
+		    "(%d)\n", __func__, init_retry_count));
+		qla4xxx_soft_reset(ha);
+		status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
+	}
+	if (status == QLA_ERROR) {
+		ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
+
+		ret = -ENODEV;
+		goto probe_failed;
+	}
+
+	host->cmd_per_lun = 3;
+	host->max_channel = 0;
+	host->max_lun = MAX_LUNS - 1;
+	host->max_id = MAX_TARGETS;
+	host->unique_id = ha->instance;
+	host->max_cmd_len = IOCB_MAX_CDB_LEN;
+	host->can_queue = REQUEST_QUEUE_DEPTH + 128;
+/* FIXME */
+/*	host->transportt = qla4xxx_transport_template; */
+
+	/* Startup the kernel thread for this host adapter. */
+	DEBUG2(printk("scsi: %s: Starting kernel thread for "
+		      "qla4xxx_dpc\n", __func__));
+	ha->dpc_should_die = 0;
+	ha->dpc_pid = kernel_thread(qla4xxx_do_dpc, ha, 0);
+	if (ha->dpc_pid < 0) {
+		ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
+
+		ret = -ENODEV;
+		goto probe_failed;
+	}
+	wait_for_completion(&ha->dpc_inited);
+
+	ret = request_irq(pdev->irq, qla4xxx_intr_handler,
+	    SA_INTERRUPT|SA_SHIRQ, "qla4xxx", ha);
+	if (ret) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Failed to reserve interrupt %d already in use.\n",
+		    pdev->irq);
+		goto probe_failed;
+	}
+	set_bit(AF_IRQ_ATTACHED, &ha->flags);
+	host->irq = pdev->irq;
+	DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq));
+
+	qla4xxx_enable_intrs(ha);
+
+	/* Start timer thread. */
+	qla4xxx_start_timer(ha, qla4xxx_timer, 1);
+
+	/* Insert new entry into the list of adapters. */
+	write_lock(&qla4xxx_hostlist_lock);
+	list_add_tail(&ha->list, &qla4xxx_hostlist);
+	write_unlock(&qla4xxx_hostlist_lock);
+
+	qla4xxx_display_config();
+
+	set_bit(AF_INIT_DONE, &ha->flags);
+	qla4xxx_hba_count++;
+
+	pci_set_drvdata(pdev, ha);
+
+	ret = scsi_add_host(host, &pdev->dev);
+	if (ret)
+		goto probe_failed;
+
+/*FIXME*/
+/*	qla4x00_alloc_sysfs_attr(ha); */
+
+	printk(KERN_INFO
+	    " QLogic iSCSI HBA Driver version: %s\n"
+	    "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
+	    qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
+	    ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
+	    ha->patch_number, ha->build_number);
+
+	scsi_scan_host(host);
+
+	return 0;
+
+probe_failed:
+	qla4xxx_free_adapter(ha);
+
+probe_disable_device:
+	pci_disable_device(pdev);
+
+	return ret;
+}
+
+/**************************************************************************
+ * qla4xxx_remove_adapter
+ *
+ * Input:
+ *	pci_dev - PCI device pointer
+ *
+ * Returns:
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static void __devexit
+qla4xxx_remove_adapter(struct pci_dev *pdev)
+{
+	scsi_qla_host_t *ha;
+
+	ha = pci_get_drvdata(pdev);
+	write_lock(&qla4xxx_hostlist_lock);
+	list_del_init(&ha->list);
+	write_unlock(&qla4xxx_hostlist_lock);
+
+	scsi_remove_host(ha->host);
+
+	qla4xxx_free_adapter(ha);
+
+	scsi_host_put(ha->host);
+
+	pci_set_drvdata(pdev, NULL);
+}
+
+/**************************************************************************
+ * qla4xxx_free_adapter
+ *
+ * Input:
+ *	pci_dev - PCI device pointer
+ *
+ * Returns:
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static void
+qla4xxx_free_adapter(scsi_qla_host_t * ha)
+{
+	int ret;
+	unsigned long flags;
+
+	set_bit(AF_HA_GOING_AWAY, &ha->flags);
+
+	/* Deregister with the iSNS Server */
+	if (test_bit(ISNS_FLAG_ISNS_ENABLED_IN_ISP, &ha->isns_flags)) {
+		qla4xxx_isns_disable(ha);
+	}
+
+	if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
+		/* Turn-off interrupts on the card. */
+		qla4xxx_disable_intrs(ha);
+	}
+
+	/* Issue Soft Reset to put firmware in unknown state */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	WRT_REG_DWORD(&ha->reg->ctrl_status, SET_RMASK(CSR_SOFT_RESET));
+	PCI_POSTING(&ha->reg->ctrl_status);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	/* Remove timer thread, if present */
+	if (ha->timer_active)
+		qla4xxx_stop_timer(ha);
+
+	/* Kill the kernel thread for this host */
+	if (ha->dpc_pid >= 0) {
+		ha->dpc_should_die = 1;
+		wmb();
+		ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
+		if (ret) {
+			ql4_printk(KERN_ERR, ha,
+			    "Unable to signal DPC thread -- (%d)\n", ret);
+		} else
+			wait_for_completion(&ha->dpc_exited);
+	}
+
+	/* free extra memory */
+	qla4xxx_mem_free(ha);
+
+	/* Detach interrupts */
+	if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
+		free_irq(ha->pdev->irq, ha);
+
+	pci_disable_device(ha->pdev);
+}
+
+/**************************************************************************
+ * qla4xxx_iospace_config
+ *    This routine
+ *
+ * Input:
+ *
+ * Returns:
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_iospace_config(scsi_qla_host_t * ha)
+{
+	unsigned long pio, pio_len, pio_flags;
+	unsigned long mmio, mmio_len, mmio_flags;
+
+	/* We only need PIO for Flash operations on ISP2312 v2 chips. */
+	pio = pci_resource_start(ha->pdev, 0);
+	pio_len = pci_resource_len(ha->pdev, 0);
+	pio_flags = pci_resource_flags(ha->pdev, 0);
+	if (pio_flags & IORESOURCE_IO) {
+		if (pio_len < MIN_IOBASE_LEN) {
+			ql4_printk(KERN_WARNING, ha,
+			    "Invalid PCI I/O region size (%s)...\n",
+			    pci_name(ha->pdev));
+			pio = 0;
+		}
+	} else {
+		ql4_printk(KERN_WARNING, ha,
+		    "region #0 not a PIO resource (%s)...\n",
+		    pci_name(ha->pdev));
+		pio = 0;
+	}
+
+	/* Use MMIO operations for all accesses. */
+	mmio = pci_resource_start(ha->pdev, 1);
+	mmio_len = pci_resource_len(ha->pdev, 1);
+	mmio_flags = pci_resource_flags(ha->pdev, 1);
+
+	if (!(mmio_flags & IORESOURCE_MEM)) {
+		ql4_printk(KERN_ERR, ha,
+		    "region #0 not an MMIO resource (%s), aborting\n",
+		    pci_name(ha->pdev));
+		goto iospace_error_exit;
+	}
+	if (mmio_len < MIN_IOBASE_LEN) {
+		ql4_printk(KERN_ERR, ha,
+		    "Invalid PCI mem region size (%s), aborting\n",
+		    pci_name(ha->pdev));
+		goto iospace_error_exit;
+	}
+
+	if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Failed to reserve PIO/MMIO regions (%s)\n",
+		    pci_name(ha->pdev));
+
+		goto iospace_error_exit;
+	}
+
+	ha->pio_address = pio;
+	ha->pio_length = pio_len;
+	ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
+	if (!ha->reg) {
+		ql4_printk(KERN_ERR, ha,
+		    "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
+
+		goto iospace_error_exit;
+	}
+
+	return 0;
+
+iospace_error_exit:
+	return -ENOMEM;
+}
+
+/**************************************************************************
+ * qla4xxx_display_config
+ *      This routine  displays the configuration information to be used in
+ *      modules.conf.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure
+ *
+ * Output:
+ *      None
+ *
+ * Returns:
+ *      None
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+void
+qla4xxx_display_config(void)
+{
+	scsi_qla_host_t *ha, *htemp;
+
+	read_lock(&qla4xxx_hostlist_lock);
+	list_for_each_entry_safe(ha, htemp, &qla4xxx_hostlist, list) {
+		/* Display the M.A.C. Address for adapter */
+		printk(KERN_INFO
+		    "scsi-qla%ld-mac=%02x%02x%02x%02x%02x%02x\\;\n",
+		    ha->instance, ha->my_mac[0], ha->my_mac[1], ha->my_mac[2],
+		    ha->my_mac[3], ha->my_mac[4], ha->my_mac[5]);
+	}
+	read_unlock(&qla4xxx_hostlist_lock);
+}
+
+/**
+ * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
+ * @ha: HA context
+ *
+ * At exit, the @ha's flags.enable_64bit_addressing set to indicated
+ * supported addressing method.
+ */
+void
+qla4xxx_config_dma_addressing(scsi_qla_host_t * ha)
+{
+	/* Update our PCI device dma_mask for full 64 bit mask */
+	if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
+		if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
+			ql4_printk(KERN_DEBUG, ha,
+			    "Failed to set 64 bit PCI consistent mask; "
+			    "using 32 bit.\n");
+			pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
+		}
+	} else
+		pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
+}
+
+/**************************************************************************
+ * qla4xxx_mem_alloc
+ *      This routine allocates memory use by the adapter.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully allocated adapter memory
+ *      QLA_ERROR   - Failed to allocate adapter memory
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_mem_alloc(scsi_qla_host_t * ha)
+{
+	unsigned long align;
+
+	/* Allocate contiguous block of DMA memory for queues. */
+	ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+	    (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + sizeof(shadow_regs_t) +
+	    MEM_ALIGN_VALUE + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+	ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
+	    &ha->queues_dma, GFP_KERNEL);
+	if (ha->queues == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Memory Allocation failed - queues.\n");
+
+		goto mem_alloc_error_exit;
+	}
+	memset(ha->queues, 0, ha->queues_len);
+
+	/*
+	 * As per RISC alignment requirements -- the bus-address must be a
+	 * multiple of the request-ring size (in bytes).
+	 */
+	align = 0;
+	if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
+		align = MEM_ALIGN_VALUE -
+		    ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1));
+
+	/* Update request and response queue pointers. */
+	ha->request_dma = ha->queues_dma + align;
+	ha->request_ring = (QUEUE_ENTRY *) (ha->queues + align);
+	ha->response_dma = ha->queues_dma + align +
+	    (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
+	ha->response_ring = (QUEUE_ENTRY *) (ha->queues + align +
+	    (REQUEST_QUEUE_DEPTH * QUEUE_SIZE));
+	ha->shadow_regs_dma = ha->queues_dma + align +
+	    (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+	    (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
+	ha->shadow_regs = (shadow_regs_t *) (ha->queues + align +
+	    (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+	    (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE));
+
+	/* Allocate iSNS Discovered Target Database. */
+	ha->isns_disc_tgt_database_size = sizeof(ISNS_DISCOVERED_TARGET) *
+	    MAX_ISNS_DISCOVERED_TARGETS;
+	ha->isns_disc_tgt_databasev = dma_alloc_coherent(&ha->pdev->dev,
+	    ha->isns_disc_tgt_database_size, &ha->isns_disc_tgt_databasep,
+	    GFP_KERNEL);
+	if (ha->isns_disc_tgt_databasev == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Memory Allocation failed - iSNS DB.\n");
+
+		goto mem_alloc_error_exit;
+	}
+	memset(ha->isns_disc_tgt_databasev, 0, ha->isns_disc_tgt_database_size);
+
+	/* Allocate memory for srb pool. */
+	ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
+	    mempool_free_slab, srb_cachep);
+	if (ha->srb_mempool == NULL) {
+		ql4_printk(KERN_WARNING, ha,
+		    "Memory Allocation failed - SRB Pool.\n");
+
+		goto mem_alloc_error_exit;
+	}
+
+	return QLA_SUCCESS;
+
+mem_alloc_error_exit:
+	qla4xxx_mem_free(ha);
+	return QLA_ERROR;
+}
+
+/**************************************************************************
+ * qla4xxx_mem_free
+ *      This routine frees adapter allocated memory
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      None
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static void
+qla4xxx_mem_free(scsi_qla_host_t * ha)
+{
+	if (ha->queues)
+		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
+		    ha->queues_dma);
+
+	ha->queues_len = 0;
+	ha->queues = NULL;
+	ha->queues_dma = 0;
+	ha->request_ring = NULL;
+	ha->request_dma = 0;
+	ha->response_ring = NULL;
+	ha->response_dma = 0;
+	ha->shadow_regs = NULL;
+	ha->shadow_regs_dma = 0;
+
+	if (ha->isns_disc_tgt_databasev)
+		dma_free_coherent(&ha->pdev->dev,
+		    ha->isns_disc_tgt_database_size,
+		    ha->isns_disc_tgt_databasev, ha->isns_disc_tgt_databasep);
+
+	ha->isns_disc_tgt_database_size = 0;
+	ha->isns_disc_tgt_databasev = 0;
+	ha->isns_disc_tgt_databasep = 0;
+
+	/* Free srb pool. */
+	if (ha->srb_mempool)
+		mempool_destroy(ha->srb_mempool);
+
+	ha->srb_mempool = NULL;
+
+	/* Free ddb list. */
+	if (!list_empty(&ha->ddb_list))
+		qla4xxx_free_ddb_list(ha);
+
+	/* release io space registers  */
+	if (ha->reg)
+		iounmap(ha->reg);
+	pci_release_regions(ha->pdev);
+}
+
+/*FIXME */
+#ifdef DG_FIX_ME
+/*
+ * qla4xxx_add_lun
+ *	Adds LUN to device database
+ *
+ * Input:
+ *	ddb:		ddb structure pointer.
+ *	lun:		LUN number.
+ *
+ * Context:
+ *	Kernel context.
+ */
+static lun_entry_t *
+qla4xxx_add_lun(struct ddb_entry *ddb, uint16_t lun)
+{
+	int found;
+	lun_entry_t *lp;
+
+	if (ddb == NULL) {
+		DEBUG2(printk
+		       ("scsi: %s: Unable to add lun to NULL port\n",
+			__func__));
+		return (NULL);
+	}
+
+	/* Allocate LUN if not already allocated. */
+	found = 0;
+	list_for_each_entry(lp, &ddb->luns, list) {
+		if (lp->lun == lun) {
+			found++;
+			break;
+		}
+	}
+	if (found) {
+		return (lp);
+	}
+
+	lp = kmalloc(sizeof(lun_entry_t), GFP_ATOMIC);
+	if (lp == NULL) {
+		printk(KERN_WARNING
+		       "%s(): Memory Allocation failed - LUN\n", __func__);
+		return (NULL);
+	}
+
+	/* Setup LUN structure. */
+	memset(lp, 0, sizeof(lun_entry_t));
+	DEBUG2(printk("Allocating Lun %d @ %p \n", lun, lp);
+	    )
+	    lp->lun = lun;
+	lp->ddb = ddb;
+	lp->lun_state = LS_LUN_READY;
+	spin_lock_init(&lp->lun_lock);
+	list_add_tail(&lp->list, &ddb->luns);
+	return (lp);
+}
+#endif
+
+static int
+qla4xxx_slave_alloc(struct scsi_device *sdev)
+{
+	struct ddb_entry *ddb;
+	scsi_qla_host_t *ha = to_qla_host(sdev->host);
+
+	ddb = qla4xxx_lookup_ddb_by_fw_index(ha, sdev->id);
+	if (!ddb)
+		return -ENXIO;
+
+	sdev->hostdata = ddb;
+#ifdef DG_FIX_ME
+	/* Needed for target resets because it translate to lun resets */
+	qla4xxx_add_lun(ddb, sdev->lun);
+#endif
+	return 0;
+}
+
+static void
+qla4xxx_slave_destroy(struct scsi_device *sdev)
+{
+	sdev->hostdata = NULL;
+}
+
+static int
+qla4xxx_slave_configure(struct scsi_device *sdev)
+{
+	if (sdev->tagged_supported)
+		scsi_activate_tcq(sdev, 32);
+	else
+		scsi_deactivate_tcq(sdev, 32);
+
+	//iscsi_port
+
+	return 0;
+}
+
+/**************************************************************************
+ * del_from_active_array
+ *      This routine removes and returns the srb at the specified index
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *      index - index into to the active_array
+ *
+ * Returns:
+ *      Pointer to corresponding SCSI Request Block
+ *
+ * Context:
+ *      Kernel/Interrupt context.
+ **************************************************************************/
+srb_t *
+del_from_active_array(scsi_qla_host_t * ha, uint32_t index)
+{
+	srb_t *srb = NULL;
+
+	/* validate handle and remove from active array */
+	if (index >= MAX_SRBS)
+		return srb;
+
+	srb = ha->active_srb_array[index];
+	ha->active_srb_array[index] = 0;
+	if (!srb)
+		return srb;
+
+	/* update counters */
+	if (srb->flags & SRB_DMA_VALID) {
+		ha->req_q_count += srb->iocb_cnt;
+		ha->iocb_cnt -= srb->iocb_cnt;
+		if (ha->active_srb_count)
+			ha->active_srb_count--;
+		/* FIXMEdg: Is this needed ???? */
+		srb->active_array_index = INVALID_ENTRY;
+		if (srb->cmd)
+			srb->cmd->host_scribble = NULL;
+	}
+	return srb;
+}
+
+/**************************************************************************
+ * qla4xxx_timer
+ *      This routine is scheduled to be invoked every second to search for
+ *      work to do.
+ *
+ * Input:
+ *      p - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      None
+ *
+ * Context:
+ *      Interrupt context.
+ **************************************************************************/
+void
+qla4xxx_timer(scsi_qla_host_t *ha)
+{
+	ddb_entry_t *ddb_entry, *dtemp;
+	int start_dpc = 0;
+
+	/* Search for relogin's to time-out and port down retry. */
+	list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
+		/*
+		 * First check to see if the device has exhausted the port
+		 * down retry count.
+		 */
+		if (atomic_read(&ddb_entry->state) == DDB_STATE_MISSING) {
+			if (atomic_read(&ddb_entry->port_down_timer) == 0)
+				continue;
+
+			if (atomic_dec_and_test(&ddb_entry->port_down_timer)) {
+				DEBUG2(printk("scsi%ld: %s: index [%d] port "
+				    "down retry count of (%d) secs exhausted, "
+				    "marking device DEAD.\n", ha->host_no,
+				    __func__, ddb_entry->fw_ddb_index,
+				    ha->port_down_retry_count));
+
+				    atomic_set(&ddb_entry->state,
+					DDB_STATE_DEAD);
+
+				DEBUG2(printk("scsi%ld: %s: index [%d] marked "
+				    "DEAD\n", ha->host_no, __func__,
+				    ddb_entry->fw_ddb_index));
+				start_dpc++;
+			}
+		}
+
+		/* Count down time between sending relogins */
+		if (ADAPTER_UP(ha) &&
+		    !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+		    atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+			if (atomic_read(&ddb_entry->retry_relogin_timer) !=
+			    INVALID_ENTRY) {
+				if (atomic_read(&ddb_entry->retry_relogin_timer)
+				    == 0) {
+					atomic_set(
+					    &ddb_entry->retry_relogin_timer,
+					    INVALID_ENTRY);
+					set_bit(DPC_RELOGIN_DEVICE,
+					    &ha->dpc_flags);
+					set_bit(DF_RELOGIN, &ddb_entry->flags);
+					DEBUG2(printk("scsi%ld: %s: index [%d] "
+					    "login device\n", ha->host_no,
+					    __func__, ddb_entry->fw_ddb_index));
+				} else
+					atomic_dec(
+					    &ddb_entry->retry_relogin_timer);
+			}
+		}
+
+		/* Wait for relogin to timeout */
+		if (atomic_read(&ddb_entry->relogin_timer) &&
+		    (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
+			/*
+			 * If the relogin times out and the device is
+			 * still NOT ONLINE then try and relogin again.
+			 */
+			if (atomic_read(&ddb_entry->state) !=
+			    DDB_STATE_ONLINE &&
+			    ddb_entry->fw_ddb_device_state ==
+			    DDB_DS_SESSION_FAILED) {
+				/* Reset retry relogin timer */
+				atomic_inc(&ddb_entry->relogin_retry_count);
+				DEBUG2(printk("scsi%ld: index[%d] relogin "
+				    "timed out-retrying relogin (%d)\n",
+				    ha->host_no, ddb_entry->fw_ddb_index,
+				    atomic_read(
+					    &ddb_entry->relogin_retry_count)));
+				start_dpc++;
+				DEBUG(printk("scsi%ld:%d:%d: index [%d] "
+				    "initate relogin after %d seconds\n",
+				    ha->host_no, ddb_entry->bus,
+				    ddb_entry->target, ddb_entry->fw_ddb_index,
+				    ddb_entry->default_time2wait + 4));
+
+				atomic_set(&ddb_entry->retry_relogin_timer,
+				    ddb_entry->default_time2wait + 4);
+			}
+		}
+	}
+
+	/* Check for heartbeat interval. */
+	if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
+	    ha->heartbeat_interval != 0) {
+		ha->seconds_since_last_heartbeat++;
+		if (ha->seconds_since_last_heartbeat >
+		    ha->heartbeat_interval + 2)
+			set_bit(DPC_RESET_HA, &ha->dpc_flags);
+	}
+
+	/* Check for iSNS actions. */
+	if (test_bit(ISNS_FLAG_RESTART_SERVICE, &ha->isns_flags)) {
+		if (atomic_read(&ha->isns_restart_timer)) {
+			if (!atomic_dec_and_test(&ha->isns_restart_timer) &&
+			    test_bit(ISNS_FLAG_ISNS_SRV_ENABLED,
+				    &ha->isns_flags) &&
+			    !IPAddrIsZero(ha->isns_ip_address) &&
+			    ha->isns_server_port_number) {
+				set_bit(DPC_ISNS_RESTART_COMPLETION,
+					&ha->dpc_flags);
+			}
+		} else
+			clear_bit(ISNS_FLAG_RESTART_SERVICE, &ha->isns_flags);
+	}
+
+	/* Wakeup the dpc routine for this adapter, if needed. */
+	if ((start_dpc ||
+	     test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+	     test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
+	     test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
+	     test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) ||
+	     test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+	     test_bit(DPC_ISNS_RESTART, &ha->dpc_flags) ||
+	     test_bit(DPC_ISNS_RESTART_COMPLETION, &ha->dpc_flags) ||
+	     test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
+	     test_bit(DPC_AEN, &ha->dpc_flags)) &&
+	    !test_bit(AF_DPC_SCHEDULED, &ha->flags) &&
+	    !ha->dpc_active && ha->dpc_wait) {
+		DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags "
+		    "= 0x%lx\n", ha->host_no, __func__, ha->dpc_flags));
+		set_bit(AF_DPC_SCHEDULED, &ha->flags);
+		up(ha->dpc_wait);
+	}
+
+	/* Reschedule timer thread to call us back in one second */
+	mod_timer(&ha->timer, jiffies + HZ);
+
+	DEBUG2(ha->seconds_since_last_intr++;)
+}
+
+int
+qla4xxx_check_for_disable_hba_reset(scsi_qla_host_t * ha)
+{
+#if DISABLE_HBA_RESETS
+	clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+	clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
+	clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags);
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+/**************************************************************************
+ * qla4xxx_do_dpc
+ *      This routine is a task that is schedule by the interrupt handler
+ *      to perform the background processing for interrupts.  We put it
+ *      on a task queue that is consumed whenever the scheduler runs; that's
+ *      so you can do anything (i.e. put the process to sleep etc).  In fact,
+ *      the mid-level tries to sleep when it reaches the driver threshold
+ *      "host->can_queue". This can cause a panic if we were in our interrupt
+ *      code.
+ *
+ * Input:
+ *      p - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      None
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static int qla4xxx_do_dpc(void *data)
+{
+	DECLARE_MUTEX_LOCKED(sem);
+	scsi_qla_host_t *ha = (scsi_qla_host_t *) data;
+	ddb_entry_t *ddb_entry, *dtemp;
+
+	lock_kernel();
+
+	daemonize("qla4xxx_%d_dpc", ha->host_no);
+	allow_signal(SIGHUP);
+
+	ha->dpc_wait = &sem;
+
+	set_user_nice(current, -20);
+
+	unlock_kernel();
+
+	complete(&ha->dpc_inited);
+
+	while (1) {
+		DEBUG2(printk("scsi%ld: %s: DPC handler sleeping.\n",
+		    ha->host_no, __func__));
+
+		if (down_interruptible(&sem))
+			break;
+
+		if (ha->dpc_should_die)
+			break;
+
+		DEBUG2(printk("scsi%ld: %s: DPC handler waking up.\n",
+		    ha->host_no, __func__));
+
+		DEBUG2(printk("scsi%ld: %s: ha->flags = 0x%08lx\n", ha->host_no,
+		    __func__, ha->flags));
+		DEBUG2(printk("scsi%ld: %s: ha->dpc_flags = 0x%08lx\n",
+		    ha->host_no, __func__, ha->dpc_flags));
+
+		/* Initialization not yet finished. Don't do anything yet. */
+		if (!test_bit(AF_INIT_DONE, &ha->flags) || ha->dpc_active)
+			continue;
+
+		ha->dpc_active = 1;
+		clear_bit(AF_DPC_SCHEDULED, &ha->flags);
+
+		if (ADAPTER_UP(ha) ||
+		    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+		    test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+		    test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) {
+			if (qla4xxx_check_for_disable_hba_reset(ha)) {
+				if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST,
+				    &ha->dpc_flags))
+					/*
+					 * dg 09/23 Never initialize ddb list
+					 * once we up and running
+					 * qla4xxx_recover_adapter(ha,
+					 *    REBUILD_DDB_LIST);
+					 */
+					qla4xxx_recover_adapter(ha,
+					    PRESERVE_DDB_LIST);
+
+				if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
+					qla4xxx_recover_adapter(ha,
+					    PRESERVE_DDB_LIST);
+
+				if (test_bit(DPC_RESET_HA_INTR,
+				    &ha->dpc_flags)) {
+					uint8_t wait_time = RESET_INTR_TOV;
+					unsigned long flags = 0;
+
+					qla4xxx_flush_active_srbs(ha);
+
+					spin_lock_irqsave(&ha->hardware_lock,
+					    flags);
+					while ((RD_REG_DWORD(
+					    ISP_PORT_STATUS(ha)) &
+						PSR_INIT_COMPLETE) == 0) {
+						if (wait_time-- == 0)
+							break;
+
+						spin_unlock_irqrestore(
+						    &ha->hardware_lock, flags);
+
+						set_current_state(
+						    TASK_UNINTERRUPTIBLE);
+						schedule_timeout(1 * HZ);
+
+						spin_lock_irqsave(
+						    &ha->hardware_lock, flags);
+					}
+					spin_unlock_irqrestore(
+					    &ha->hardware_lock, flags);
+
+					if (wait_time == 0)
+						DEBUG2(printk(
+						    "scsi%ld: %s: IC bit not "
+						    "set\n", ha->host_no,
+						    __func__));
+
+					if (!test_bit(AF_HA_GOING_AWAY,
+					    &ha->flags)) {
+						qla4xxx_initialize_adapter(ha,
+						    PRESERVE_DDB_LIST);
+						clear_bit(DPC_RESET_HA_INTR,
+						    &ha->dpc_flags);
+						qla4xxx_enable_intrs(ha);
+					}
+				}
+			}
+		}
+
+		/* ---- process AEN? --- */
+		if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+			qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+		/* ---- Get DHCP IP Address? --- */
+		if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+			qla4xxx_get_dhcp_ip_address(ha);
+
+		/* ---- relogin device? --- */
+		if (ADAPTER_UP(ha) &&
+		    test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
+			list_for_each_entry_safe(ddb_entry, dtemp,
+			    &ha->ddb_list, list) {
+				if (test_and_clear_bit(DF_RELOGIN,
+				    &ddb_entry->flags) &&
+				    atomic_read(&ddb_entry->state) !=
+				    DDB_STATE_ONLINE) {
+					qla4xxx_relogin_device(ha, ddb_entry);
+				}
+			}
+		}
+
+		/* ---- restart iSNS server? --- */
+		if (ADAPTER_UP(ha) && test_and_clear_bit(DPC_ISNS_RESTART,
+		    &ha->dpc_flags))
+			qla4xxx_isns_restart_service(ha);
+
+		if (ADAPTER_UP(ha) &&
+		    test_and_clear_bit(DPC_ISNS_RESTART_COMPLETION,
+			    &ha->dpc_flags)) {
+			uint32_t ip_addr = 0;
+
+			IPAddr2Uint32(ha->isns_ip_address, &ip_addr);
+
+			if (qla4xxx_isns_restart_service_completion(ha,
+			    ip_addr, ha->isns_server_port_number) !=
+			    QLA_SUCCESS) {
+				DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
+				    "restart service failed\n", ha->host_no,
+				    __func__));
+			}
+		}
+
+		ha->dpc_active = 0;
+	}
+
+	/* Make sure that nobody tries to wake us up again. */
+	ha->dpc_wait = NULL;
+	ha->dpc_active = 0;
+
+	complete_and_exit(&ha->dpc_exited, 0);
+}
+
+/**************************************************************************
+ * qla4010_soft_reset
+ *      This routine performs a SOFT RESET.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully reset the firmware
+ *      QLA_ERROR   - Failed to reset the firmware
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4010_soft_reset(scsi_qla_host_t * ha)
+{
+	uint32_t max_wait_time;
+	unsigned long flags = 0;
+	int status = QLA_ERROR;
+	uint32_t ctrl_status;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	/*
+	 * If the SCSI Reset Interrupt bit is set, clear it.
+	 * Otherwise, the Soft Reset won't work.
+	 */
+	ctrl_status = RD_REG_DWORD(&ha->reg->ctrl_status);
+	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
+		WRT_REG_DWORD(&ha->reg->ctrl_status,
+			      SET_RMASK(CSR_SCSI_RESET_INTR));
+
+	/* Issue Soft Reset */
+	WRT_REG_DWORD(&ha->reg->ctrl_status, SET_RMASK(CSR_SOFT_RESET));
+	PCI_POSTING(&ha->reg->ctrl_status);
+
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	/* Wait until the Network Reset Intr bit is cleared */
+	max_wait_time = RESET_INTR_TOV;
+	do {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		ctrl_status = RD_REG_DWORD(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
+			break;
+
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(1 * HZ);
+	} while ((--max_wait_time));
+
+	if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
+		DEBUG2(printk(KERN_WARNING
+		    "scsi%ld: Network Reset Intr not cleared by Network "
+		    "function, clearing it now!\n", ha->host_no));
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		WRT_REG_DWORD(&ha->reg->ctrl_status,
+			      SET_RMASK(CSR_NET_RESET_INTR));
+		PCI_POSTING(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	}
+
+	/* Wait until the firmware tells us the Soft Reset is done */
+	max_wait_time = SOFT_RESET_TOV;
+	do {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		ctrl_status = RD_REG_DWORD(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		if ((ctrl_status & CSR_SOFT_RESET) == 0) {
+			status = QLA_SUCCESS;
+			break;
+		}
+
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(1 * HZ);
+	} while ((--max_wait_time));
+
+	/*
+	 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
+	 * after the soft reset has taken place.
+	 */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	ctrl_status = RD_REG_DWORD(&ha->reg->ctrl_status);
+	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
+		WRT_REG_DWORD(&ha->reg->ctrl_status,
+			      SET_RMASK(CSR_SCSI_RESET_INTR));
+		PCI_POSTING(&ha->reg->ctrl_status);
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	/* If soft reset fails then most probably the bios on other
+	 * function is also enabled.
+	 * Since the initialization is sequential the other fn
+	 * wont be able to acknowledge the soft reset.
+	 * Issue a force soft reset to workaround this scenario.
+	 */
+	if (max_wait_time == 0) {
+		/* Issue Force Soft Reset */
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		WRT_REG_DWORD(&ha->reg->ctrl_status,
+			      SET_RMASK(CSR_FORCE_SOFT_RESET));
+		PCI_POSTING(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		/* Wait until the firmware tells us the Soft Reset is done */
+		max_wait_time = SOFT_RESET_TOV;
+		do {
+			spin_lock_irqsave(&ha->hardware_lock, flags);
+			ctrl_status = RD_REG_DWORD(&ha->reg->ctrl_status);
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+			if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
+				status = QLA_SUCCESS;
+				break;
+			}
+
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			schedule_timeout(1 * HZ);
+		} while ((--max_wait_time));
+	}
+
+	return (status);
+}
+
+/**************************************************************************
+ * qla4xxx_topcat_reset
+ *      This routine performs a HARD RESET of the TopCat chip.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully reset the firmware
+ *      QLA_ERROR   - Failed to reset the firmware
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4xxx_topcat_reset(scsi_qla_host_t * ha)
+{
+	unsigned long flags;
+
+	QL4XXX_LOCK_NVRAM(ha);
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	WRT_REG_DWORD(ISP_GP_OUT(ha), SET_RMASK(GPOR_TOPCAT_RESET));
+	PCI_POSTING(ISP_GP_OUT(ha));
+	do {
+		mdelay(1);
+	} while (0);
+	WRT_REG_DWORD(ISP_GP_OUT(ha), CLR_RMASK(GPOR_TOPCAT_RESET));
+	PCI_POSTING(ISP_GP_OUT(ha));
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	do {
+		mdelay(2523);
+	} while (0);
+	QL4XXX_UNLOCK_NVRAM(ha);
+	return (QLA_SUCCESS);
+}
+
+/**************************************************************************
+ * qla4xxx_soft_reset
+ *      This routine performs a SOFT RESET.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully reset the firmware
+ *      QLA_ERROR   - Failed to reset the firmware
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4xxx_soft_reset(scsi_qla_host_t * ha)
+{
+
+	DEBUG2(printk(KERN_WARNING "scsi%ld: %s: chip reset!\n", ha->host_no,
+	    __func__));
+	if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) {
+		int status = QLA_ERROR;
+
+		if (qla4010_soft_reset(ha) == QLA_SUCCESS) {
+			if (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) {
+				if (qla4010_soft_reset(ha) == QLA_SUCCESS) {
+					status = QLA_SUCCESS;
+				}
+			}
+		}
+		return (status);
+	} else
+		return qla4010_soft_reset(ha);
+}
+
+/**************************************************************************
+ * qla4xxx_hard_reset
+ *      This routine performs a HARD RESET.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully reset the firmware
+ *      QLA_ERROR   - Failed to reset the firmware
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4xxx_hard_reset(scsi_qla_host_t * ha)
+{
+	/* The QLA4010 really doesn't have an equivalent to a hard reset */
+	qla4xxx_flush_active_srbs(ha);
+	if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) {
+		int status = QLA_ERROR;
+
+		if (qla4010_soft_reset(ha) == QLA_SUCCESS) {
+			if (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) {
+				if (qla4010_soft_reset(ha) == QLA_SUCCESS) {
+					status = QLA_SUCCESS;
+				}
+			}
+		}
+		return status;
+	} else
+		return qla4010_soft_reset(ha);
+}
+
+/**************************************************************************
+ * qla4xxx_cmd_wait
+ *      This routine stalls the driver until all outstanding commands are
+ *      returned.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ *       Caller must release the Hardware Lock prior to calling this routine.
+ *
+ * Returns:
+ *      QLA_SUCCESS - All outstanding commands completed
+ *      QLA_ERROR   - All outstanding commands did not complete
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_cmd_wait(scsi_qla_host_t * ha)
+{
+	uint32_t index = 0;
+	int stat = QLA_SUCCESS;
+	unsigned long flags;
+	int wait_cnt = WAIT_CMD_TOV;	/*
+					 * Initialized for 30 seconds as we
+					 * expect all commands to retuned
+					 * ASAP.
+					 */
+
+	while (wait_cnt) {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		/* Find a command that hasn't completed. */
+		for (index = 1; index < MAX_SRBS; index++) {
+			if (ha->active_srb_array[index] != NULL)
+				break;
+		}
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		/* If No Commands are pending, wait is complete */
+		if (index == MAX_SRBS) {
+			break;
+		}
+
+		/* If we timed out on waiting for commands to come back
+		 * return ERROR.
+		 */
+		wait_cnt--;
+		if (wait_cnt == 0)
+			stat = QLA_ERROR;
+		else {
+			/* sleep a second */
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			schedule_timeout(1 * HZ);
+		}
+	}			/* End of While (wait_cnt) */
+
+	return (stat);
+}
+
+/**************************************************************************
+ * qla4xxx_recover_adapter
+ *      This routine recovers that adapter from a fatal state.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *      renew_ddb_list - Indicates what to do with the adapter's ddb list
+ *                      after adapter recovery has completed.
+ *                      0=preserve ddb list, 1=destroy and rebuild ddb list
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully recovered adapter
+ *      QLA_ERROR   - Failed to recover adapter
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4xxx_recover_adapter(scsi_qla_host_t * ha, uint8_t renew_ddb_list)
+{
+	int status = QLA_SUCCESS;
+
+	/* Stall incoming I/O until we are done */
+	clear_bit(AF_ONLINE, &ha->flags);
+	DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no,
+	    __func__));
+
+	/* Wait for outstanding commands to complete.
+	 * Stalls the driver for max 30 secs
+	 */
+	status = qla4xxx_cmd_wait(ha);
+
+	qla4xxx_disable_intrs(ha);
+
+	/* Flush any pending ddb changed AENs */
+	qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+	/* Reset the firmware.  If successful, function
+	 * returns with ISP interrupts enabled.
+	 */
+	if (status == QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n",
+		    ha->host_no, __func__));
+		status = qla4xxx_soft_reset(ha);
+	}
+	/* FIXMEkaren: Do we want to keep interrupts enabled and process
+	   AENs after soft reset */
+
+	/* If firmware (SOFT) reset failed, or if all outstanding
+	 * commands have not returned, then do a HARD reset.
+	 */
+	if (status == QLA_ERROR) {
+		DEBUG2(printk("scsi%ld: %s - Performing hard reset..\n",
+		    ha->host_no, __func__));
+		status = qla4xxx_hard_reset(ha);
+	}
+
+	/* Flush any pending ddb changed AENs */
+	qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+	/* Re-initialize firmware. If successful, function returns
+	 * with ISP interrupts enabled */
+	if (status == QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n",
+		    ha->host_no, __func__));
+
+		/* If successful, AF_ONLINE flag set in
+		 * qla4xxx_initialize_adapter */
+		status = qla4xxx_initialize_adapter(ha, renew_ddb_list);
+	}
+
+	/* Failed adapter initialization?
+	 * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */
+	if ((test_bit(AF_ONLINE, &ha->flags) == 0) &&
+	    (test_bit(DPC_RESET_HA, &ha->dpc_flags))) {
+		/* Adapter initialization failed, see if we can retry
+		 * resetting the ha */
+		if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
+			ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
+			DEBUG2(printk("scsi%ld: recover adapter - retrying "
+			    "(%d) more times\n", ha->host_no,
+			    ha->retry_reset_ha_cnt));
+			set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+			status = QLA_ERROR;
+		} else {
+			if (ha->retry_reset_ha_cnt > 0) {
+				/* Schedule another Reset HA--DPC will retry */
+				ha->retry_reset_ha_cnt--;
+				DEBUG2(printk("scsi%ld: recover adapter - "
+				    "retry remaining %d\n", ha->host_no,
+				    ha->retry_reset_ha_cnt));
+				status = QLA_ERROR;
+			}
+
+			if (ha->retry_reset_ha_cnt == 0) {
+				/* Recover adapter retries have been exhausted.
+				 * Adapter DEAD */
+				DEBUG2(printk("scsi%ld: recover adapter "
+				    "failed - board disabled\n", ha->host_no));
+				qla4xxx_flush_active_srbs(ha);
+				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+				clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST,
+					  &ha->dpc_flags);
+				status = QLA_ERROR;
+			}
+		}
+	} else {
+		clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+		clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags);
+		clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+	}
+
+	ha->adapter_error_count++;
+
+	if (status == QLA_SUCCESS)
+		qla4xxx_enable_intrs(ha);
+
+	DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no));
+	return (status);
+}
+
+
+/**************************************************************************
+ * qla4xxx_eh_wait_on_command
+ *      This routine waits for the command to be returned by the Firmware
+ *      for some max time.
+ *
+ * Input:
+ *    ha = actual ha whose done queue will contain the command
+ *            returned by firmware.
+ *    cmd = Scsi Command to wait on.
+ *
+ * Returns:
+ *    Not Found : 0
+ *    Found : 1
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_eh_wait_on_command(scsi_qla_host_t * ha, struct scsi_cmnd *cmd)
+{
+	int done = 0;
+	srb_t *rp;
+	uint32_t max_wait_time = EH_WAIT_CMD_TOV;
+
+	do {
+		/* Checking to see if its returned to OS */
+		rp = (srb_t *) CMD_SP(cmd);
+		if (rp == NULL) {
+			done++;
+			break;
+		}
+
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(2 * HZ);
+	} while (max_wait_time--);
+
+	return done;
+}
+
+/**************************************************************************
+ * qla4xxx_wait_for_hba_online
+ *      This routine
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure
+ *
+ * Remarks:
+ *
+ * Returns:
+ *      SUCCESS - Adapter is ONLINE
+ *      FAILED  - Adapter is DEAD
+ *
+ * Context:
+ *      Kernel context.  Assume io_request_lock LOCKED upon entry
+ **************************************************************************/
+int qla4xxx_wait_for_hba_online(scsi_qla_host_t * ha)
+{
+	unsigned long wait_online;
+
+	wait_online = jiffies + (30 * HZ);
+	while (time_before(jiffies, wait_online)) {
+		if (ADAPTER_UP(ha))
+			return QLA_SUCCESS;
+
+		if (!ADAPTER_UP(ha) && (ha->retry_reset_ha_cnt == 0)) {
+			return QLA_ERROR;
+		}
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(2 * HZ);
+	}
+
+	return QLA_ERROR;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_abort
+ *      This routine aborts commands that currently held in the adapter's
+ *      internal queues.  Commands that are active are NOT aborted.
+ *
+ * Input:
+ *      cmd - Pointer to Linux's SCSI command structure
+ *
+ * Remarks:
+ *      Aborts get translated to "device resets" by the scsi switch
+ *      which will return a RESET status and not ABORT. Since the
+ *      mid-level is expecting an ABORT status during an abort(),
+ *      we always elevate to device reset.
+ *
+ * Returns:
+ *      SUCCESS - Successfully aborted non-active command
+ *      FAILED  - Command not found, or command currently active
+ *
+ * Context:
+ *      Kernel context.  io_request_lock LOCKED
+ **************************************************************************/
+static int
+qla4xxx_eh_abort(struct scsi_cmnd *cmd)
+{
+	if (!CMD_SP(cmd))
+		return FAILED;
+
+	/*
+	 * Aborts get translated to "device resets" by some scsi switches which
+	 * will return a RESET status and not ABORT. Since the mid-level is
+	 * expecting an ABORT status during an abort(), we always elevate to
+	 * device reset.
+	 */
+	return FAILED;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_wait_for_active_target_commands
+ *      This routine
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *      target - SCSI target ID
+ *
+ * Returns:
+ *      0 - All pending commands returned
+ *      non-zero - All pending commands did not return
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4xxx_eh_wait_for_active_target_commands(scsi_qla_host_t * ha, int t, int l)
+{
+	int cnt;
+	int status;
+	srb_t *sp;
+	struct scsi_cmnd *cmd;
+
+	/*
+	 * Waiting for all commands for the designated target in the active
+	 * array
+	 */
+	status = 0;
+	for (cnt = 1; cnt < MAX_SRBS; cnt++) {
+		spin_lock(&ha->hardware_lock);
+		sp = ha->active_srb_array[cnt];
+		if (sp) {
+			cmd = sp->cmd;
+			spin_unlock(&ha->hardware_lock);
+			if (cmd->device->id == t && cmd->device->lun == l) {
+				if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
+					status++;
+					break;
+				}
+			}
+		} else {
+			spin_unlock(&ha->hardware_lock);
+		}
+	}
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_device_reset
+ *      This routine is called by the Linux OS to reset all luns on the
+ * 	specified target.
+ *
+ * Input:
+ *      cmd - Pointer to Linux's SCSI command structure
+ *
+ * Output:
+ *      None
+ *
+ * Remarks:
+ *      None
+ *
+ * Returns:
+ *      SUCCESS - Successfully reset target/lun
+ *      FAILED  - Failed to reset target/lun
+ *
+ * Context:
+ *      Kernel context.  io_request_lock LOCKED
+ **************************************************************************/
+static int
+qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
+{
+	scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
+	struct ddb_entry *ddb_entry = (struct ddb_entry *)cmd->device->hostdata;
+	srb_t *sp;
+	int ret = FAILED, stat;
+
+	sp = (srb_t *) CMD_SP(cmd);
+	if (!sp || !ddb_entry)
+		return ret;
+
+	ql4_printk(KERN_INFO, ha,
+	    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
+	    cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+	DEBUG2(printk(KERN_INFO
+	    "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, "
+	    "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
+	    cmd, jiffies, cmd->timeout_per_command / HZ, ha->dpc_flags,
+	    cmd->result, cmd->allowed));
+
+	/* FIXme: wait for hba to go online */
+	stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
+	if (stat != QLA_SUCCESS) {
+		ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
+
+		goto eh_dev_reset_done;
+	}
+
+	/* Send marker. */
+	ha->marker_needed = 1;
+
+	/*
+	 * If we are coming down the EH path, wait for all commands to complete
+	 * for the device.
+	 */
+	if (cmd->device->host->eh_active) {
+		if (qla4xxx_eh_wait_for_active_target_commands(ha,
+		    cmd->device->id, cmd->device->lun)) {
+			ql4_printk(KERN_INFO, ha,
+			    "DEVICE RESET FAILED - waiting for commands.\n");
+			goto eh_dev_reset_done;
+		}
+	}
+
+	ql4_printk(KERN_INFO, ha,
+	    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
+	    cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+	ret = SUCCESS;
+
+eh_dev_reset_done:
+
+	return ret;
+}
+
+/**************************************************************************
+ * qla4xxx_eh_bus_reset
+ *      This routine is called by the Linux OS to reset the specified
+ *      adapter/bus.
+ *
+ * Input:
+ *      cmd - Pointer to Linux's SCSI command structure
+ *
+ * Returns:
+ *      SUCCESS - Successfully reset adapter/bus
+ *      FAILED  - Failed to reset adapter/bus
+ *
+ * Context:
+ *      Kernel context.  io_request_lock LOCKED
+ **************************************************************************/
+static int
+qla4xxx_eh_bus_reset(struct scsi_cmnd *cmd)
+{
+	int status = QLA_SUCCESS;
+	int return_status = FAILED;
+	scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
+	struct ddb_entry *ddb_entry = (struct ddb_entry *)cmd->device->hostdata;
+	ddb_entry_t *dtemp;
+
+	ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
+
+	ql4_printk(KERN_INFO, ha,
+	    "scsi(%ld:%d:%d:%d): BUS RESET ISSUED.\n", ha->host_no,
+	    cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+	if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld:%d: %s: Unable to reset bus.  Adapter "
+		    "DEAD.\n", ha->host_no, cmd->device->channel, __func__));
+
+		return FAILED;
+	}
+
+	/* Attempt to reset all valid targets with outstanding commands */
+	list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
+		/* Issue a reset */
+		status |= qla4xxx_reset_target(ha, ddb_entry);
+	}
+
+	/*
+	 * Status is QLA_SUCCESS if target resets for ALL devices completed
+	 * successfully.  Otherwise the status is QLA_ERROR.
+	 */
+	if (status == QLA_SUCCESS)
+		return_status = SUCCESS;
+
+	ql4_printk(KERN_INFO, ha, "BUS RESET %s.\n",
+	    return_status == FAILED ? "FAILED" : "SUCCEDED");
+
+	return return_status;
+}
+
+/**************************************************************************
+ * qla4xxx_reset_target
+ *      This routine issues either a warm or cold target reset to the
+ *      specified device.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *      ddb_entry - Pointer to device database entry
+ *
+ * Remarks:
+ *      The caller must ensure that the ddb_entry pointer is valid before
+ *      calling this routine.
+ *
+ * Returns:
+ *      QLA_SUCCESS - Successfully reset target
+ *      QLA_ERROR   - Failed to reset target
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+int
+qla4xxx_reset_target(scsi_qla_host_t * ha, ddb_entry_t * ddb_entry)
+{
+	int status = QLA_SUCCESS;
+#if 0
+	uint8_t stat;
+
+	/* Reset all LUNs on this target */
+	list_for_each_entry(fclun, &fcport->fcluns, list) {
+		stat = qla4xxx_reset_lun(ha, ddb_entry, fclun);
+		if (stat == QLA_SUCCESS) {
+			/* Send marker. */
+			ha->marker_needed = 1;
+
+			/*
+			 * Waiting for all active commands to complete for the
+			 * device.
+			 */
+			status |=
+			    qla4xxx_eh_wait_for_active_target_commands(ha,
+								       ddb_entry->
+								       target,
+								       fclun->
+								       lun);
+		} else {
+			status |= QLA_ERROR;
+		}
+	}
+#endif
+
+	if (status == QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld:%d: device reset SUCCEEDED.\n",
+		    ha->host_no, ddb_entry->os_target_id));
+	} else {
+		DEBUG2(printk("scsi%ld:%d: device reset FAILED.\n",
+		    ha->host_no, ddb_entry->os_target_id));
+
+		status = QLA_ERROR;
+	}
+
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_flush_active_srbs
+ *      This routine is called just prior to a HARD RESET to return all
+ *      outstanding commands back to the Operating System.
+ *
+ * Input:
+ *      ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ *      Caller should make sure that the following locks are released
+ *      before this calling routine:
+ *              Hardware lock, io_request_lock, adapter_lock, and lun_lock.
+ *
+ * Returns:
+ *      None
+ *
+ * Context:
+ *      Kernel context.
+ **************************************************************************/
+static void
+qla4xxx_flush_active_srbs(scsi_qla_host_t * ha)
+{
+	srb_t *srb;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	for (i = 1; i < MAX_SRBS; i++) {
+		if ((srb = ha->active_srb_array[i]) != NULL) {
+			del_from_active_array(ha, i);
+			srb->cmd->result = DID_RESET << 16;
+			qla4xxx_srb_compl(ha, srb);
+		}
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+}
+
+/**************************************************************************
+ * qla4xxx_eh_host_reset
+ *      This routine is invoked by the Linux kernel to perform fatal error
+ *      recovery on the specified adapter.
+ *
+ * Input:
+ *      cmd - Pointer to Linux's SCSI command structure
+ *
+ * Returns:
+ *      SUCCESS - Successfully recovered host adapter
+ *      FAILED  - Failed to recover host adapter
+ *
+ * Context:
+ *      Kernel context.  io_request_lock LOCKED
+ **************************************************************************/
+static int
+qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
+{
+	int return_status = FAILED;
+	scsi_qla_host_t *ha;
+
+	ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
+
+	ql4_printk(KERN_INFO, ha,
+	    "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no,
+	    cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+	if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
+		    "DEAD.\n", ha->host_no, cmd->device->channel, __func__));
+
+		return FAILED;
+	}
+
+	if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) {
+		return_status = SUCCESS;
+	}
+
+	ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
+	    return_status == FAILED ? "FAILED" : "SUCCEDED");
+
+	return return_status;
+}
+
+
+static struct pci_device_id qla4xxx_pci_tbl[] = {
+	{
+		.vendor		= PCI_VENDOR_ID_QLOGIC,
+		.device		= PCI_DEVICE_ID_QLOGIC_ISP4010,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_QLOGIC,
+		.device		= PCI_DEVICE_ID_QLOGIC_ISP4022,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+	},
+	{0, 0},
+};
+MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
+
+struct pci_driver qla4xxx_pci_driver = {
+	.name		= DRIVER_NAME,
+	.id_table	= qla4xxx_pci_tbl,
+	.probe		= qla4xxx_probe_adapter,
+	.remove		= qla4xxx_remove_adapter,
+};
+
+static int __init
+qla4xxx_module_init(void)
+{
+	int ret;
+
+	/* Allocate cache for SRBs. */
+	srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(srb_t), 0,
+	    SLAB_HWCACHE_ALIGN, NULL, NULL);
+	if (srb_cachep == NULL) {
+		printk(KERN_ERR
+		    "qla4xxx: Unable to allocate SRB cache...Failing load!\n");
+		return -ENOMEM;
+	}
+
+	/* Derive version string. */
+	strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
+	if (extended_error_logging)
+		strcat(qla4xxx_version_str, "-debug");
+
+	printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
+	ret = pci_module_init(&qla4xxx_pci_driver);
+	if (ret)
+		kmem_cache_destroy(srb_cachep);
+
+	return ret;
+}
+
+static void __exit
+qla4xxx_module_exit(void)
+{
+	pci_unregister_driver(&qla4xxx_pci_driver);
+	kmem_cache_destroy(srb_cachep);
+}
+
+module_init(qla4xxx_module_init);
+module_exit(qla4xxx_module_exit);
+
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLA4XXX_DRIVER_VERSION);

-- 
Andrew Vasquez
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