[PATCH 3/8] qla4xxx: OS integration files

Andrew Vasquez
2005-09-06T22:09:12Z

ISP4xxx driver OS files.

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

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);