Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
new file mode 100644
index 0000000..b5863d8
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -0,0 +1,4456 @@
+/*
+ * QLOGIC LINUX SOFTWARE
+ *
+ * QLogic ISP2x00 device driver for Linux 2.6.x
+ * Copyright (C) 2003-2004 QLogic Corporation
+ * (www.qlogic.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ */
+#include "qla_def.h"
+
+#include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
+#include <linux/smp_lock.h>
+#include <linux/delay.h>
+
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_fc.h>
+
+/*
+ * Driver version
+ */
+char qla2x00_version_str[40];
+
+/*
+ * SRB allocation cache
+ */
+char srb_cachep_name[16];
+kmem_cache_t *srb_cachep;
+
+/*
+ * Stats for all adpaters.
+ */
+struct _qla2x00stats qla2x00_stats;
+
+/*
+ * Ioctl related information.
+ */
+int num_hosts;
+int apiHBAInstance;
+
+/*
+ * Module parameter information and variables
+ */
+int ql2xmaxqdepth;
+module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xmaxqdepth,
+ "Maximum queue depth to report for target devices.");
+
+int ql2xlogintimeout = 20;
+module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(ql2xlogintimeout,
+ "Login timeout value in seconds.");
+
+int qlport_down_retry;
+module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(qlport_down_retry,
+ "Maximum number of command retries to a port that returns"
+ "a PORT-DOWN status.");
+
+int ql2xretrycount = 20;
+module_param(ql2xretrycount, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xretrycount,
+ "Maximum number of mid-layer retries allowed for a command. "
+ "Default value is 20, ");
+
+int displayConfig;
+module_param(displayConfig, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(displayConfig,
+ "If 1 then display the configuration used in /etc/modprobe.conf.");
+
+int ql2xplogiabsentdevice;
+module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xplogiabsentdevice,
+ "Option to enable PLOGI to devices that are not present after "
+ "a Fabric scan. This is needed for several broken switches."
+ "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
+
+int ql2xenablezio = 0;
+module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(ql2xenablezio,
+ "Option to enable ZIO:If 1 then enable it otherwise"
+ " use the default set in the NVRAM."
+ " Default is 0 : disabled");
+
+int ql2xintrdelaytimer = 10;
+module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(ql2xintrdelaytimer,
+ "ZIO: Waiting time for Firmware before it generates an "
+ "interrupt to the host to notify completion of request.");
+
+int ConfigRequired;
+module_param(ConfigRequired, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(ConfigRequired,
+ "If 1, then only configured devices passed in through the"
+ "ql2xopts parameter will be presented to the OS");
+
+int Bind = BIND_BY_PORT_NAME;
+module_param(Bind, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(Bind,
+ "Target persistent binding method: "
+ "0 by Portname (default); 1 by PortID; 2 by Nodename. ");
+
+int ql2xsuspendcount = SUSPEND_COUNT;
+module_param(ql2xsuspendcount, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xsuspendcount,
+ "Number of 6-second suspend iterations to perform while a "
+ "target returns a <NOT READY> status. Default is 10 "
+ "iterations.");
+
+int ql2xdoinitscan = 1;
+module_param(ql2xdoinitscan, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xdoinitscan,
+ "Signal mid-layer to perform scan after driver load: 0 -- no "
+ "signal sent to mid-layer.");
+
+int ql2xloginretrycount = 0;
+module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(ql2xloginretrycount,
+ "Specify an alternate value for the NVRAM login retry count.");
+
+/*
+ * Proc structures and functions
+ */
+struct info_str {
+ char *buffer;
+ int length;
+ off_t offset;
+ int pos;
+};
+
+static void copy_mem_info(struct info_str *, char *, int);
+static int copy_info(struct info_str *, char *, ...);
+
+static void qla2x00_free_device(scsi_qla_host_t *);
+
+static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
+
+/*
+ * SCSI host template entry points
+ */
+static int qla2xxx_slave_configure(struct scsi_device * device);
+static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
+ void (*fn)(struct scsi_cmnd *));
+static int qla2xxx_eh_abort(struct scsi_cmnd *);
+static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
+static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
+static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
+static int qla2x00_loop_reset(scsi_qla_host_t *ha);
+static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
+
+static int qla2x00_proc_info(struct Scsi_Host *, char *, char **,
+ off_t, int, int);
+
+static struct scsi_host_template qla2x00_driver_template = {
+ .module = THIS_MODULE,
+ .name = "qla2xxx",
+ .proc_name = "qla2xxx",
+ .proc_info = qla2x00_proc_info,
+ .queuecommand = qla2x00_queuecommand,
+
+ .eh_abort_handler = qla2xxx_eh_abort,
+ .eh_device_reset_handler = qla2xxx_eh_device_reset,
+ .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
+ .eh_host_reset_handler = qla2xxx_eh_host_reset,
+
+ .slave_configure = qla2xxx_slave_configure,
+
+ .this_id = -1,
+ .cmd_per_lun = 3,
+ .use_clustering = ENABLE_CLUSTERING,
+ .sg_tablesize = SG_ALL,
+
+ /*
+ * The RISC allows for each command to transfer (2^32-1) bytes of data,
+ * which equates to 0x800000 sectors.
+ */
+ .max_sectors = 0xFFFF,
+};
+
+static struct scsi_transport_template *qla2xxx_transport_template = NULL;
+
+static void qla2x00_display_fc_names(scsi_qla_host_t *);
+
+/* TODO Convert to inlines
+ *
+ * Timer routines
+ */
+#define WATCH_INTERVAL 1 /* number of seconds */
+
+static void qla2x00_timer(scsi_qla_host_t *);
+
+static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
+ void *, unsigned long);
+static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
+static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
+
+static inline void
+qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
+{
+ 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 inline void
+qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
+{
+ mod_timer(&ha->timer, jiffies + interval * HZ);
+}
+
+static __inline__ void
+qla2x00_stop_timer(scsi_qla_host_t *ha)
+{
+ del_timer_sync(&ha->timer);
+ ha->timer_active = 0;
+}
+
+void qla2x00_cmd_timeout(srb_t *);
+
+static __inline__ void qla2x00_callback(scsi_qla_host_t *, struct scsi_cmnd *);
+static __inline__ void sp_put(struct scsi_qla_host * ha, srb_t *sp);
+static __inline__ void sp_get(struct scsi_qla_host * ha, srb_t *sp);
+static __inline__ void
+qla2x00_delete_from_done_queue(scsi_qla_host_t *, srb_t *);
+
+/*
+* qla2x00_callback
+* Returns the completed SCSI command to LINUX.
+*
+* Input:
+* ha -- Host adapter structure
+* cmd -- SCSI mid-level command structure.
+* Returns:
+* None
+* Note:From failover point of view we always get the sp
+* from vis_ha pool in queuecommand.So when we put it
+* back to the pool it has to be the vis_ha.
+* So rely on struct scsi_cmnd to get the vis_ha and not on sp.
+*/
+static inline void
+qla2x00_callback(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
+{
+ srb_t *sp = (srb_t *) CMD_SP(cmd);
+ scsi_qla_host_t *vis_ha;
+ os_lun_t *lq;
+ int got_sense;
+ unsigned long cpu_flags = 0;
+
+ cmd->host_scribble = (unsigned char *) NULL;
+ vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
+
+ if (sp == NULL) {
+ qla_printk(KERN_INFO, ha,
+ "%s(): **** CMD derives a NULL SP\n",
+ __func__);
+ DEBUG2(BUG();)
+ return;
+ }
+
+ /*
+ * If command status is not DID_BUS_BUSY then go ahead and freed sp.
+ */
+ /*
+ * Cancel command timeout
+ */
+ qla2x00_delete_timer_from_cmd(sp);
+
+ /*
+ * Put SP back in the free queue
+ */
+ sp->cmd = NULL;
+ CMD_SP(cmd) = NULL;
+ lq = sp->lun_queue;
+ got_sense = (sp->flags & SRB_GOT_SENSE)? 1: 0;
+ add_to_free_queue(vis_ha, sp);
+
+ if (host_byte(cmd->result) == DID_OK) {
+ /* device ok */
+ ha->total_bytes += cmd->bufflen;
+ if (!got_sense) {
+ /* If lun was suspended then clear retry count */
+ spin_lock_irqsave(&lq->q_lock, cpu_flags);
+ if (!test_bit(LUN_EXEC_DELAYED, &lq->q_flag))
+ lq->q_state = LUN_STATE_READY;
+ spin_unlock_irqrestore(&lq->q_lock, cpu_flags);
+ }
+ } else if (host_byte(cmd->result) == DID_ERROR) {
+ /* device error */
+ ha->total_dev_errs++;
+ }
+
+ /* Call the mid-level driver interrupt handler */
+ (*(cmd)->scsi_done)(cmd);
+}
+
+/**************************************************************************
+* sp_put
+*
+* Description:
+* Decrement reference count and call the callback if we're the last
+* owner of the specified sp. Will get the host_lock before calling
+* the callback.
+*
+* Input:
+* ha - pointer to the scsi_qla_host_t where the callback is to occur.
+* sp - pointer to srb_t structure to use.
+*
+* Returns:
+*
+**************************************************************************/
+static inline void
+sp_put(struct scsi_qla_host * ha, srb_t *sp)
+{
+ if (atomic_read(&sp->ref_count) == 0) {
+ qla_printk(KERN_INFO, ha,
+ "%s(): **** SP->ref_count not zero\n",
+ __func__);
+ DEBUG2(BUG();)
+
+ return;
+ }
+
+ if (!atomic_dec_and_test(&sp->ref_count)) {
+ return;
+ }
+
+ qla2x00_callback(ha, sp->cmd);
+}
+
+/**************************************************************************
+* sp_get
+*
+* Description:
+* Increment reference count of the specified sp.
+*
+* Input:
+* sp - pointer to srb_t structure to use.
+*
+* Returns:
+*
+**************************************************************************/
+static inline void
+sp_get(struct scsi_qla_host * ha, srb_t *sp)
+{
+ atomic_inc(&sp->ref_count);
+
+ if (atomic_read(&sp->ref_count) > 2) {
+ qla_printk(KERN_INFO, ha,
+ "%s(): **** SP->ref_count greater than two\n",
+ __func__);
+ DEBUG2(BUG();)
+
+ return;
+ }
+}
+
+static inline void
+qla2x00_delete_from_done_queue(scsi_qla_host_t *dest_ha, srb_t *sp)
+{
+ /* remove command from done list */
+ list_del_init(&sp->list);
+ dest_ha->done_q_cnt--;
+ sp->state = SRB_NO_QUEUE_STATE;
+
+ if (sp->flags & SRB_DMA_VALID) {
+ sp->flags &= ~SRB_DMA_VALID;
+
+ /* Release memory used for this I/O */
+ if (sp->cmd->use_sg) {
+ pci_unmap_sg(dest_ha->pdev, sp->cmd->request_buffer,
+ sp->cmd->use_sg, sp->cmd->sc_data_direction);
+ } else if (sp->cmd->request_bufflen) {
+ pci_unmap_page(dest_ha->pdev, sp->dma_handle,
+ sp->cmd->request_bufflen,
+ sp->cmd->sc_data_direction);
+ }
+ }
+}
+
+static int qla2x00_do_dpc(void *data);
+
+static void qla2x00_rst_aen(scsi_qla_host_t *);
+
+static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
+static void qla2x00_mem_free(scsi_qla_host_t *ha);
+static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
+static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
+static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *ha);
+
+static ssize_t qla2x00_sysfs_read_fw_dump(struct kobject *, char *, loff_t,
+ size_t);
+static ssize_t qla2x00_sysfs_write_fw_dump(struct kobject *, char *, loff_t,
+ size_t);
+static struct bin_attribute sysfs_fw_dump_attr = {
+ .attr = {
+ .name = "fw_dump",
+ .mode = S_IRUSR | S_IWUSR,
+ .owner = THIS_MODULE,
+ },
+ .size = 0,
+ .read = qla2x00_sysfs_read_fw_dump,
+ .write = qla2x00_sysfs_write_fw_dump,
+};
+static ssize_t qla2x00_sysfs_read_nvram(struct kobject *, char *, loff_t,
+ size_t);
+static ssize_t qla2x00_sysfs_write_nvram(struct kobject *, char *, loff_t,
+ size_t);
+static struct bin_attribute sysfs_nvram_attr = {
+ .attr = {
+ .name = "nvram",
+ .mode = S_IRUSR | S_IWUSR,
+ .owner = THIS_MODULE,
+ },
+ .size = sizeof(nvram_t),
+ .read = qla2x00_sysfs_read_nvram,
+ .write = qla2x00_sysfs_write_nvram,
+};
+
+/* -------------------------------------------------------------------------- */
+
+
+/* SysFS attributes. */
+static ssize_t qla2x00_sysfs_read_fw_dump(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)));
+
+ if (ha->fw_dump_reading == 0)
+ return 0;
+ if (off > ha->fw_dump_buffer_len)
+ return 0;
+ if (off + count > ha->fw_dump_buffer_len)
+ count = ha->fw_dump_buffer_len - off;
+
+ memcpy(buf, &ha->fw_dump_buffer[off], count);
+
+ return (count);
+}
+
+static ssize_t qla2x00_sysfs_write_fw_dump(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)));
+ int reading;
+ uint32_t dump_size;
+
+ if (off != 0)
+ return (0);
+
+ reading = simple_strtol(buf, NULL, 10);
+ switch (reading) {
+ case 0:
+ if (ha->fw_dump_reading == 1) {
+ qla_printk(KERN_INFO, ha,
+ "Firmware dump cleared on (%ld).\n",
+ ha->host_no);
+
+ vfree(ha->fw_dump_buffer);
+ free_pages((unsigned long)ha->fw_dump,
+ ha->fw_dump_order);
+
+ ha->fw_dump_reading = 0;
+ ha->fw_dump_buffer = NULL;
+ ha->fw_dump = NULL;
+ }
+ break;
+ case 1:
+ if (ha->fw_dump != NULL && !ha->fw_dump_reading) {
+ ha->fw_dump_reading = 1;
+
+ dump_size = FW_DUMP_SIZE_1M;
+ if (ha->fw_memory_size < 0x20000)
+ dump_size = FW_DUMP_SIZE_128K;
+ else if (ha->fw_memory_size < 0x80000)
+ dump_size = FW_DUMP_SIZE_512K;
+ ha->fw_dump_buffer = (char *)vmalloc(dump_size);
+ if (ha->fw_dump_buffer == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Unable to allocate memory for firmware "
+ "dump buffer (%d).\n", dump_size);
+
+ ha->fw_dump_reading = 0;
+ return (count);
+ }
+ qla_printk(KERN_INFO, ha,
+ "Firmware dump ready for read on (%ld).\n",
+ ha->host_no);
+ memset(ha->fw_dump_buffer, 0, dump_size);
+ if (IS_QLA2100(ha) || IS_QLA2200(ha))
+ qla2100_ascii_fw_dump(ha);
+ else
+ qla2300_ascii_fw_dump(ha);
+ ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
+ }
+ break;
+ }
+ return (count);
+}
+
+static ssize_t qla2x00_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);
+ qla2x00_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++;
+ }
+ qla2x00_unlock_nvram_access(ha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return (count);
+}
+
+static ssize_t qla2x00_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);
+ qla2x00_lock_nvram_access(ha);
+ qla2x00_release_nvram_protection(ha);
+ witer = (uint16_t *)buf;
+ for (cnt = 0; cnt < count / 2; cnt++) {
+ qla2x00_write_nvram_word(ha, cnt+ha->nvram_base,
+ cpu_to_le16(*witer));
+ witer++;
+ }
+ qla2x00_unlock_nvram_access(ha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return (count);
+}
+
+/* -------------------------------------------------------------------------- */
+static char *
+qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str)
+{
+ static char *pci_bus_modes[] = {
+ "33", "66", "100", "133",
+ };
+ uint16_t pci_bus;
+
+ strcpy(str, "PCI");
+ pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
+ if (pci_bus) {
+ strcat(str, "-X (");
+ strcat(str, pci_bus_modes[pci_bus]);
+ } else {
+ pci_bus = (ha->pci_attr & BIT_8) >> 8;
+ strcat(str, " (");
+ strcat(str, pci_bus_modes[pci_bus]);
+ }
+ strcat(str, " MHz)");
+
+ return (str);
+}
+
+char *
+qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str)
+{
+ char un_str[10];
+
+ sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
+ ha->fw_minor_version,
+ ha->fw_subminor_version);
+
+ if (ha->fw_attributes & BIT_9) {
+ strcat(str, "FLX");
+ return (str);
+ }
+
+ switch (ha->fw_attributes & 0xFF) {
+ case 0x7:
+ strcat(str, "EF");
+ break;
+ case 0x17:
+ strcat(str, "TP");
+ break;
+ case 0x37:
+ strcat(str, "IP");
+ break;
+ case 0x77:
+ strcat(str, "VI");
+ break;
+ default:
+ sprintf(un_str, "(%x)", ha->fw_attributes);
+ strcat(str, un_str);
+ break;
+ }
+ if (ha->fw_attributes & 0x100)
+ strcat(str, "X");
+
+ return (str);
+}
+
+/**************************************************************************
+* qla2x00_queuecommand
+*
+* Description:
+* Queue a command to the controller.
+*
+* Input:
+* cmd - pointer to Scsi cmd structure
+* fn - pointer to Scsi done function
+*
+* Returns:
+* 0 - Always
+*
+* Note:
+* The mid-level driver tries to ensures 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).
+**************************************************************************/
+static int
+qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
+{
+ fc_port_t *fcport;
+ os_lun_t *lq;
+ os_tgt_t *tq;
+ scsi_qla_host_t *ha, *ha2;
+ srb_t *sp;
+ struct Scsi_Host *host;
+ unsigned int b, t, l;
+ unsigned long handle;
+ int was_empty;
+
+
+ host = cmd->device->host;
+ ha = (scsi_qla_host_t *) host->hostdata;
+ was_empty = 1;
+
+ cmd->scsi_done = fn;
+
+ spin_unlock_irq(ha->host->host_lock);
+
+ /*
+ * Allocate a command packet from the "sp" pool. If we cant get back
+ * one then let scsi layer come back later.
+ */
+ if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Couldn't allocate memory for sp - retried.\n");
+
+ spin_lock_irq(ha->host->host_lock);
+
+ return (1);
+ }
+
+ sp->cmd = cmd;
+ CMD_SP(cmd) = (void *)sp;
+
+ sp->flags = 0;
+ if (CMD_RESID_LEN(cmd) & SRB_IOCTL) {
+ /* Need to set sp->flags */
+ sp->flags |= SRB_IOCTL;
+ CMD_RESID_LEN(cmd) = 0; /* Clear it since no more use. */
+ }
+
+ sp->fo_retry_cnt = 0;
+ sp->err_id = 0;
+
+ /* Generate LU queue on bus, target, LUN */
+ b = cmd->device->channel;
+ t = cmd->device->id;
+ l = cmd->device->lun;
+
+ /*
+ * Start Command Timer. Typically it will be 2 seconds less than what
+ * is requested by the Host such that we can return the IO before
+ * aborts are called.
+ */
+ if ((cmd->timeout_per_command / HZ) > QLA_CMD_TIMER_DELTA)
+ qla2x00_add_timer_to_cmd(sp,
+ (cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA);
+ else
+ qla2x00_add_timer_to_cmd(sp, cmd->timeout_per_command / HZ);
+
+ if (l >= ha->max_luns) {
+ cmd->result = DID_NO_CONNECT << 16;
+ sp->err_id = SRB_ERR_PORT;
+
+ spin_lock_irq(ha->host->host_lock);
+
+ sp_put(ha, sp);
+
+ return (0);
+ }
+
+ if ((tq = (os_tgt_t *) TGT_Q(ha, t)) != NULL &&
+ (lq = (os_lun_t *) LUN_Q(ha, t, l)) != NULL) {
+ fcport = lq->fclun->fcport;
+ ha2 = fcport->ha;
+ } else {
+ lq = NULL;
+ fcport = NULL;
+ ha2 = ha;
+ }
+
+ /* Set an invalid handle until we issue the command to ISP */
+ /* then we will set the real handle value. */
+ handle = INVALID_HANDLE;
+ cmd->host_scribble = (unsigned char *)handle;
+
+ /* Bookkeeping information */
+ sp->r_start = jiffies; /* Time the request was recieved. */
+ sp->u_start = 0;
+
+ /* Setup device queue pointers. */
+ sp->tgt_queue = tq;
+ sp->lun_queue = lq;
+
+ /*
+ * NOTE : q is NULL
+ *
+ * 1. When device is added from persistent binding but has not been
+ * discovered yet.The state of loopid == PORT_AVAIL.
+ * 2. When device is never found on the bus.(loopid == UNUSED)
+ *
+ * IF Device Queue is not created, or device is not in a valid state
+ * and link down error reporting is enabled, reject IO.
+ */
+ if (fcport == NULL) {
+ DEBUG3(printk("scsi(%ld:%2d:%2d): port unavailable\n",
+ ha->host_no,t,l));
+
+ cmd->result = DID_NO_CONNECT << 16;
+ sp->err_id = SRB_ERR_PORT;
+
+ spin_lock_irq(ha->host->host_lock);
+
+ sp_put(ha, sp);
+
+ return (0);
+ }
+
+ /* Only modify the allowed count if the target is a *non* tape device */
+ if ((fcport->flags & FCF_TAPE_PRESENT) == 0) {
+ sp->flags &= ~SRB_TAPE;
+ if (cmd->allowed < ql2xretrycount) {
+ cmd->allowed = ql2xretrycount;
+ }
+ } else
+ sp->flags |= SRB_TAPE;
+
+ DEBUG5(printk("scsi(%ld:%2d:%2d): (queuecmd) queue sp = %p, "
+ "flags=0x%x fo retry=%d, pid=%ld\n",
+ ha->host_no, t, l, sp, sp->flags, sp->fo_retry_cnt,
+ cmd->serial_number));
+ DEBUG5(qla2x00_print_scsi_cmd(cmd));
+
+ sp->fclun = lq->fclun;
+ sp->ha = ha2;
+
+ if (cmd->sc_data_direction == DMA_BIDIRECTIONAL &&
+ cmd->request_bufflen != 0) {
+
+ DEBUG2(printk(KERN_WARNING
+ "scsi(%ld): Incorrect data direction - transfer "
+ "length=%d, direction=%d, pid=%ld, opcode=%x\n",
+ ha->host_no, cmd->request_bufflen, cmd->sc_data_direction,
+ cmd->serial_number, cmd->cmnd[0]));
+ }
+
+ /* Final pre-check :
+ *
+ * Either PORT_DOWN_TIMER OR LINK_DOWN_TIMER Expired.
+ */
+ if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
+ atomic_read(&ha2->loop_state) == LOOP_DEAD) {
+ /*
+ * Add the command to the done-queue for later failover
+ * processing.
+ */
+ cmd->result = DID_NO_CONNECT << 16;
+ if (atomic_read(&ha2->loop_state) == LOOP_DOWN)
+ sp->err_id = SRB_ERR_LOOP;
+ else
+ sp->err_id = SRB_ERR_PORT;
+
+ add_to_done_queue(ha, sp);
+ qla2x00_done(ha);
+
+ spin_lock_irq(ha->host->host_lock);
+ return (0);
+ }
+
+ if (tq && test_bit(TQF_SUSPENDED, &tq->flags) &&
+ (sp->flags & SRB_TAPE) == 0) {
+ /* If target suspended put incoming I/O in retry_q. */
+ qla2x00_extend_timeout(sp->cmd, 10);
+ add_to_scsi_retry_queue(ha, sp);
+ } else
+ was_empty = add_to_pending_queue(ha, sp);
+
+ if ((IS_QLA2100(ha) || IS_QLA2200(ha)) && ha->flags.online) {
+ if (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla2x00_process_response_queue(ha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ }
+ }
+
+ /* We submit to the hardware if:
+ *
+ * 1) we're on the cpu the irq's arrive on or
+ * 2) there are very few io's outstanding.
+ *
+ * In all other cases we'll let an irq pick up our IO and submit it
+ * to the controller to improve affinity.
+ */
+ if (_smp_processor_id() == ha->last_irq_cpu || was_empty)
+ qla2x00_next(ha);
+
+ spin_lock_irq(ha->host->host_lock);
+
+ return (0);
+}
+
+/*
+ * qla2x00_eh_wait_on_command
+ * 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.
+ * flag = Abort/Reset(Bus or Device Reset)
+ *
+ * Return:
+ * Not Found : 0
+ * Found : 1
+ */
+static int
+qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
+{
+#define ABORT_POLLING_PERIOD HZ
+#define ABORT_WAIT_TIME ((10 * HZ) / (ABORT_POLLING_PERIOD))
+
+ int found = 0;
+ int done = 0;
+ srb_t *rp = NULL;
+ struct list_head *list, *temp;
+ u_long max_wait_time = ABORT_WAIT_TIME;
+
+ do {
+ /* Check on done queue */
+ spin_lock(&ha->list_lock);
+ list_for_each_safe(list, temp, &ha->done_queue) {
+ rp = list_entry(list, srb_t, list);
+
+ /*
+ * Found command. Just exit and wait for the cmd sent
+ * to OS.
+ */
+ if (cmd == rp->cmd) {
+ found++;
+ DEBUG3(printk("%s: found in done queue.\n",
+ __func__);)
+ break;
+ }
+ }
+ spin_unlock(&ha->list_lock);
+
+ /* Complete the cmd right away. */
+ if (found) {
+ qla2x00_delete_from_done_queue(ha, rp);
+ sp_put(ha, rp);
+ done++;
+ break;
+ }
+
+ spin_unlock_irq(ha->host->host_lock);
+
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(ABORT_POLLING_PERIOD);
+
+ spin_lock_irq(ha->host->host_lock);
+
+ } while ((max_wait_time--));
+
+ if (done)
+ DEBUG2(printk(KERN_INFO "%s: found cmd=%p.\n", __func__, cmd));
+
+ return (done);
+}
+
+/*
+ * qla2x00_wait_for_hba_online
+ * Wait till the HBA is online after going through
+ * <= MAX_RETRIES_OF_ISP_ABORT or
+ * finally HBA is disabled ie marked offline
+ *
+ * Input:
+ * ha - pointer to host adapter structure
+ *
+ * Note:
+ * Does context switching-Release SPIN_LOCK
+ * (if any) before calling this routine.
+ *
+ * Return:
+ * Success (Adapter is online) : 0
+ * Failed (Adapter is offline/disabled) : 1
+ */
+static int
+qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
+{
+ int return_status;
+ unsigned long wait_online;
+
+ wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
+ while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
+ test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
+ test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
+ ha->dpc_active) && time_before(jiffies, wait_online)) {
+
+ msleep(1000);
+ }
+ if (ha->flags.online)
+ return_status = QLA_SUCCESS;
+ else
+ return_status = QLA_FUNCTION_FAILED;
+
+ DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
+
+ return (return_status);
+}
+
+/*
+ * qla2x00_wait_for_loop_ready
+ * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
+ * to be in LOOP_READY state.
+ * Input:
+ * ha - pointer to host adapter structure
+ *
+ * Note:
+ * Does context switching-Release SPIN_LOCK
+ * (if any) before calling this routine.
+ *
+ *
+ * Return:
+ * Success (LOOP_READY) : 0
+ * Failed (LOOP_NOT_READY) : 1
+ */
+static inline int
+qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
+{
+ int return_status = QLA_SUCCESS;
+ unsigned long loop_timeout ;
+
+ /* wait for 5 min at the max for loop to be ready */
+ loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
+
+ while ((!atomic_read(&ha->loop_down_timer) &&
+ atomic_read(&ha->loop_state) == LOOP_DOWN) ||
+ test_bit(CFG_ACTIVE, &ha->cfg_flags) ||
+ atomic_read(&ha->loop_state) != LOOP_READY) {
+ msleep(1000);
+ if (time_after_eq(jiffies, loop_timeout)) {
+ return_status = QLA_FUNCTION_FAILED;
+ break;
+ }
+ }
+ return (return_status);
+}
+
+/**************************************************************************
+* qla2xxx_eh_abort
+*
+* Description:
+* The abort function will abort the specified command.
+*
+* Input:
+* cmd = Linux SCSI command packet to be aborted.
+*
+* Returns:
+* Either SUCCESS or FAILED.
+*
+* Note:
+**************************************************************************/
+int
+qla2xxx_eh_abort(struct scsi_cmnd *cmd)
+{
+ int i;
+ int return_status = FAILED;
+ os_lun_t *q;
+ scsi_qla_host_t *ha;
+ scsi_qla_host_t *vis_ha;
+ srb_t *sp;
+ srb_t *rp;
+ struct list_head *list, *temp;
+ struct Scsi_Host *host;
+ uint8_t found = 0;
+ unsigned int b, t, l;
+
+ /* Get the SCSI request ptr */
+ sp = (srb_t *) CMD_SP(cmd);
+
+ /*
+ * If sp is NULL, command is already returned.
+ * sp is NULLED just before we call back scsi_done
+ *
+ */
+ if ((sp == NULL)) {
+ /* no action - we don't have command */
+ qla_printk(KERN_INFO, to_qla_host(cmd->device->host),
+ "qla2xxx_eh_abort: cmd already done sp=%p\n", sp);
+ DEBUG(printk("qla2xxx_eh_abort: cmd already done sp=%p\n", sp);)
+ return SUCCESS;
+ }
+ if (sp) {
+ DEBUG(printk("qla2xxx_eh_abort: refcount %i \n",
+ atomic_read(&sp->ref_count));)
+ }
+
+ vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
+ ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
+
+ host = ha->host;
+
+ /* Generate LU queue on bus, target, LUN */
+ b = cmd->device->channel;
+ t = cmd->device->id;
+ l = cmd->device->lun;
+ q = GET_LU_Q(vis_ha, t, l);
+
+ qla_printk(KERN_INFO, ha,
+ "%s scsi(%ld:%d:%d:%d): cmd_timeout_in_sec=0x%x.\n", __func__,
+ ha->host_no, (int)b, (int)t, (int)l,
+ cmd->timeout_per_command / HZ);
+
+ /*
+ * if no LUN queue then something is very wrong!!!
+ */
+ if (q == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "qla2x00: (%x:%x:%x) No LUN queue.\n", b, t, l);
+
+ /* no action - we don't have command */
+ return FAILED;
+ }
+
+ DEBUG2(printk("scsi(%ld): ABORTing cmd=%p sp=%p jiffies = 0x%lx, "
+ "timeout=%x, dpc_flags=%lx, vis_ha->dpc_flags=%lx q->flag=%lx\n",
+ ha->host_no, cmd, sp, jiffies, cmd->timeout_per_command / HZ,
+ ha->dpc_flags, vis_ha->dpc_flags, q->q_flag));
+ DEBUG2(qla2x00_print_scsi_cmd(cmd));
+
+ spin_unlock_irq(ha->host->host_lock);
+ if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
+ DEBUG2(printk("%s failed:board disabled\n", __func__);)
+ spin_lock_irq(ha->host->host_lock);
+ return FAILED;
+ }
+ spin_lock_irq(ha->host->host_lock);
+
+ /* Search done queue */
+ spin_lock(&ha->list_lock);
+ list_for_each_safe(list, temp, &ha->done_queue) {
+ rp = list_entry(list, srb_t, list);
+
+ if (cmd != rp->cmd)
+ continue;
+
+ /*
+ * Found command.Remove it from done list.
+ * And proceed to post completion to scsi mid layer.
+ */
+ return_status = SUCCESS;
+ found++;
+ qla2x00_delete_from_done_queue(ha, sp);
+
+ break;
+ } /* list_for_each_safe() */
+ spin_unlock(&ha->list_lock);
+
+ /*
+ * Return immediately if the aborted command was already in the done
+ * queue
+ */
+ if (found) {
+ qla_printk(KERN_INFO, ha,
+ "qla2xxx_eh_abort: Returning completed command=%p sp=%p\n",
+ cmd, sp);
+ sp_put(ha, sp);
+ return (return_status);
+ }
+
+
+ /*
+ * See if this command is in the retry queue
+ */
+ DEBUG3(printk("qla2xxx_eh_abort: searching sp %p in retry "
+ "queue.\n", sp);)
+
+ spin_lock(&ha->list_lock);
+ list_for_each_safe(list, temp, &ha->retry_queue) {
+ rp = list_entry(list, srb_t, list);
+
+ if (cmd != rp->cmd)
+ continue;
+
+
+ DEBUG2(printk("qla2xxx_eh_abort: found "
+ "in retry queue. SP=%p\n", sp);)
+
+ __del_from_retry_queue(ha, rp);
+ cmd->result = DID_ABORT << 16;
+ __add_to_done_queue(ha, rp);
+
+ return_status = SUCCESS;
+ found++;
+
+ break;
+
+ }
+ spin_unlock(&ha->list_lock);
+
+
+ /*
+ * Our SP pointer points at the command we want to remove from the
+ * pending queue providing we haven't already sent it to the adapter.
+ */
+ if (!found) {
+ DEBUG3(printk("qla2xxx_eh_abort: searching sp %p "
+ "in pending queue.\n", sp);)
+
+ spin_lock(&vis_ha->list_lock);
+ list_for_each_safe(list, temp, &vis_ha->pending_queue) {
+ rp = list_entry(list, srb_t, list);
+
+ if (rp->cmd != cmd)
+ continue;
+
+ /* Remove srb from LUN queue. */
+ rp->flags |= SRB_ABORTED;
+
+ DEBUG2(printk("qla2xxx_eh_abort: Cmd in pending queue."
+ " serial_number %ld.\n",
+ sp->cmd->serial_number);)
+
+ __del_from_pending_queue(vis_ha, rp);
+ cmd->result = DID_ABORT << 16;
+
+ __add_to_done_queue(vis_ha, rp);
+
+ return_status = SUCCESS;
+
+ found++;
+ break;
+ } /* list_for_each_safe() */
+ spin_unlock(&vis_ha->list_lock);
+ } /*End of if !found */
+
+ if (!found) { /* find the command in our active list */
+ DEBUG3(printk("qla2xxx_eh_abort: searching sp %p "
+ "in outstanding queue.\n", sp);)
+
+ spin_lock(&ha->hardware_lock);
+ for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
+ sp = ha->outstanding_cmds[i];
+
+ if (sp == NULL)
+ continue;
+
+ if (sp->cmd != cmd)
+ continue;
+
+ DEBUG2(printk("qla2xxx_eh_abort(%ld): aborting sp %p "
+ "from RISC. pid=%ld sp->state=%x q->q_flag=%lx\n",
+ ha->host_no, sp, sp->cmd->serial_number,
+ sp->state, q->q_flag);)
+ DEBUG(qla2x00_print_scsi_cmd(cmd);)
+
+ /* Get a reference to the sp and drop the lock.*/
+ sp_get(ha, sp);
+
+ spin_unlock(&ha->hardware_lock);
+ spin_unlock_irq(ha->host->host_lock);
+
+ if (qla2x00_abort_command(ha, sp)) {
+ DEBUG2(printk("qla2xxx_eh_abort: abort_command "
+ "mbx failed.\n");)
+ return_status = FAILED;
+ } else {
+ DEBUG3(printk("qla2xxx_eh_abort: abort_command "
+ " mbx success.\n");)
+ return_status = SUCCESS;
+ }
+
+ sp_put(ha,sp);
+
+ spin_lock_irq(ha->host->host_lock);
+ spin_lock(&ha->hardware_lock);
+
+ /*
+ * Regardless of mailbox command status, go check on
+ * done queue just in case the sp is already done.
+ */
+ break;
+
+ }/*End of for loop */
+ spin_unlock(&ha->hardware_lock);
+
+ } /*End of if !found */
+
+ /* Waiting for our command in done_queue to be returned to OS.*/
+ if (qla2x00_eh_wait_on_command(ha, cmd) != 0) {
+ DEBUG2(printk("qla2xxx_eh_abort: cmd returned back to OS.\n");)
+ return_status = SUCCESS;
+ }
+
+ if (return_status == FAILED) {
+ qla_printk(KERN_INFO, ha,
+ "qla2xxx_eh_abort Exiting: status=Failed\n");
+ return FAILED;
+ }
+
+ DEBUG2(printk("qla2xxx_eh_abort: Exiting. return_status=0x%x.\n",
+ return_status));
+
+ return return_status;
+}
+
+/**************************************************************************
+* qla2x00_eh_wait_for_pending_target_commands
+*
+* Description:
+* Waits for all the commands to come back from the specified target.
+*
+* Input:
+* ha - pointer to scsi_qla_host structure.
+* t - target
+* Returns:
+* Either SUCCESS or FAILED.
+*
+* Note:
+**************************************************************************/
+static int
+qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
+{
+ int cnt;
+ int status;
+ srb_t *sp;
+ struct scsi_cmnd *cmd;
+
+ status = 0;
+
+ /*
+ * Waiting for all commands for the designated target in the active
+ * array
+ */
+ for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
+ spin_lock(&ha->hardware_lock);
+ sp = ha->outstanding_cmds[cnt];
+ if (sp) {
+ cmd = sp->cmd;
+ spin_unlock(&ha->hardware_lock);
+ if (cmd->device->id == t) {
+ if (!qla2x00_eh_wait_on_command(ha, cmd)) {
+ status = 1;
+ break;
+ }
+ }
+ }
+ else {
+ spin_unlock(&ha->hardware_lock);
+ }
+ }
+ return (status);
+}
+
+
+/**************************************************************************
+* qla2xxx_eh_device_reset
+*
+* Description:
+* The device reset function will reset the target and abort any
+* executing commands.
+*
+* NOTE: The use of SP is undefined within this context. Do *NOT*
+* attempt to use this value, even if you determine it is
+* non-null.
+*
+* Input:
+* cmd = Linux SCSI command packet of the command that cause the
+* bus device reset.
+*
+* Returns:
+* SUCCESS/FAILURE (defined as macro in scsi.h).
+*
+**************************************************************************/
+int
+qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
+{
+ int return_status;
+ unsigned int b, t, l;
+ scsi_qla_host_t *ha;
+ os_tgt_t *tq;
+ os_lun_t *lq;
+ fc_port_t *fcport_to_reset;
+ srb_t *rp;
+ struct list_head *list, *temp;
+
+ return_status = FAILED;
+ if (cmd == NULL) {
+ printk(KERN_INFO
+ "%s(): **** SCSI mid-layer passing in NULL cmd\n",
+ __func__);
+
+ return (return_status);
+ }
+
+ b = cmd->device->channel;
+ t = cmd->device->id;
+ l = cmd->device->lun;
+ ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
+
+ tq = TGT_Q(ha, t);
+ if (tq == NULL) {
+ qla_printk(KERN_INFO, ha,
+ "%s(): **** CMD derives a NULL TGT_Q\n", __func__);
+
+ return (return_status);
+ }
+ lq = (os_lun_t *)LUN_Q(ha, t, l);
+ if (lq == NULL) {
+ printk(KERN_INFO
+ "%s(): **** CMD derives a NULL LUN_Q\n", __func__);
+
+ return (return_status);
+ }
+ fcport_to_reset = lq->fclun->fcport;
+
+ /* If we are coming in from the back-door, stall I/O until complete. */
+ if (!cmd->device->host->eh_active)
+ set_bit(TQF_SUSPENDED, &tq->flags);
+
+ qla_printk(KERN_INFO, ha,
+ "scsi(%ld:%d:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, b, t, l);
+
+ DEBUG2(printk(KERN_INFO
+ "scsi(%ld): DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, "
+ "dpc_flags=%lx, status=%x allowed=%d cmd.state=%x\n",
+ ha->host_no, cmd, jiffies, cmd->timeout_per_command / HZ,
+ ha->dpc_flags, cmd->result, cmd->allowed, cmd->state));
+
+ /* Clear commands from the retry queue. */
+ spin_lock(&ha->list_lock);
+ list_for_each_safe(list, temp, &ha->retry_queue) {
+ rp = list_entry(list, srb_t, list);
+
+ if (t != rp->cmd->device->id)
+ continue;
+
+ DEBUG2(printk(KERN_INFO
+ "qla2xxx_eh_reset: found in retry queue. SP=%p\n", rp));
+
+ __del_from_retry_queue(ha, rp);
+ rp->cmd->result = DID_RESET << 16;
+ __add_to_done_queue(ha, rp);
+ }
+ spin_unlock(&ha->list_lock);
+
+ spin_unlock_irq(ha->host->host_lock);
+
+ if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
+ DEBUG2(printk(KERN_INFO
+ "%s failed:board disabled\n",__func__));
+
+ spin_lock_irq(ha->host->host_lock);
+ goto eh_dev_reset_done;
+ }
+
+ if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
+ if (qla2x00_device_reset(ha, fcport_to_reset) == 0) {
+ return_status = SUCCESS;
+ }
+
+#if defined(LOGOUT_AFTER_DEVICE_RESET)
+ if (return_status == SUCCESS) {
+ if (fcport_to_reset->flags & FC_FABRIC_DEVICE) {
+ qla2x00_fabric_logout(ha,
+ fcport_to_reset->loop_id);
+ qla2x00_mark_device_lost(ha, fcport_to_reset);
+ }
+ }
+#endif
+ } else {
+ DEBUG2(printk(KERN_INFO
+ "%s failed: loop not ready\n",__func__);)
+ }
+
+ spin_lock_irq(ha->host->host_lock);
+
+ if (return_status == FAILED) {
+ DEBUG3(printk("%s(%ld): device reset failed\n",
+ __func__, ha->host_no));
+ qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
+ __func__);
+
+ goto eh_dev_reset_done;
+ }
+
+ /*
+ * If we are coming down the EH path, wait for all commands to
+ * complete for the device.
+ */
+ if (cmd->device->host->eh_active) {
+ if (qla2x00_eh_wait_for_pending_target_commands(ha, t))
+ return_status = FAILED;
+
+ if (return_status == FAILED) {
+ DEBUG3(printk("%s(%ld): failed while waiting for "
+ "commands\n", __func__, ha->host_no));
+ qla_printk(KERN_INFO, ha,
+ "%s: failed while waiting for commands\n",
+ __func__);
+
+ goto eh_dev_reset_done;
+ }
+ }
+
+ qla_printk(KERN_INFO, ha,
+ "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
+ ha->host_no, b, t, l);
+
+eh_dev_reset_done:
+
+ if (!cmd->device->host->eh_active)
+ clear_bit(TQF_SUSPENDED, &tq->flags);
+
+ return (return_status);
+}
+
+/**************************************************************************
+* qla2x00_eh_wait_for_pending_commands
+*
+* Description:
+* Waits for all the commands to come back from the specified host.
+*
+* Input:
+* ha - pointer to scsi_qla_host structure.
+*
+* Returns:
+* 1 : SUCCESS
+* 0 : FAILED
+*
+* Note:
+**************************************************************************/
+static int
+qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
+{
+ int cnt;
+ int status;
+ srb_t *sp;
+ struct scsi_cmnd *cmd;
+
+ status = 1;
+
+ /*
+ * Waiting for all commands for the designated target in the active
+ * array
+ */
+ for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
+ spin_lock(&ha->hardware_lock);
+ sp = ha->outstanding_cmds[cnt];
+ if (sp) {
+ cmd = sp->cmd;
+ spin_unlock(&ha->hardware_lock);
+ status = qla2x00_eh_wait_on_command(ha, cmd);
+ if (status == 0)
+ break;
+ }
+ else {
+ spin_unlock(&ha->hardware_lock);
+ }
+ }
+ return (status);
+}
+
+
+/**************************************************************************
+* qla2xxx_eh_bus_reset
+*
+* Description:
+* The bus reset function will reset the bus and abort any executing
+* commands.
+*
+* Input:
+* cmd = Linux SCSI command packet of the command that cause the
+* bus reset.
+*
+* Returns:
+* SUCCESS/FAILURE (defined as macro in scsi.h).
+*
+**************************************************************************/
+int
+qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
+{
+ scsi_qla_host_t *ha;
+ srb_t *sp;
+ int rval = FAILED;
+
+ ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
+ sp = (srb_t *) CMD_SP(cmd);
+
+ qla_printk(KERN_INFO, ha,
+ "scsi(%ld:%d:%d:%d): LOOP RESET ISSUED.\n", ha->host_no,
+ cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+ spin_unlock_irq(ha->host->host_lock);
+
+ if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
+ DEBUG2(printk("%s failed:board disabled\n",__func__));
+ spin_lock_irq(ha->host->host_lock);
+ return FAILED;
+ }
+
+ if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
+ if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
+ rval = SUCCESS;
+ }
+
+ spin_lock_irq(ha->host->host_lock);
+ if (rval == FAILED)
+ goto out;
+
+ /* Waiting for our command in done_queue to be returned to OS.*/
+ if (cmd->device->host->eh_active)
+ if (!qla2x00_eh_wait_for_pending_commands(ha))
+ rval = FAILED;
+
+ out:
+ qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
+ (rval == FAILED) ? "failed" : "succeded");
+
+ return rval;
+}
+
+/**************************************************************************
+* qla2xxx_eh_host_reset
+*
+* Description:
+* The reset function will reset the Adapter.
+*
+* Input:
+* cmd = Linux SCSI command packet of the command that cause the
+* adapter reset.
+*
+* Returns:
+* Either SUCCESS or FAILED.
+*
+* Note:
+**************************************************************************/
+int
+qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
+{
+ scsi_qla_host_t *ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
+ int rval = SUCCESS;
+
+ /* Display which one we're actually resetting for debug. */
+ DEBUG(printk("qla2xxx_eh_host_reset:Resetting scsi(%ld).\n",
+ ha->host_no));
+
+ /*
+ * Now issue reset.
+ */
+ qla_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);
+
+ spin_unlock_irq(ha->host->host_lock);
+
+ if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
+ goto board_disabled;
+
+ /*
+ * Fixme-may be dpc thread is active and processing
+ * loop_resync,so wait a while for it to
+ * be completed and then issue big hammer.Otherwise
+ * it may cause I/O failure as big hammer marks the
+ * devices as lost kicking of the port_down_timer
+ * while dpc is stuck for the mailbox to complete.
+ */
+ /* Blocking call-Does context switching if loop is Not Ready */
+ qla2x00_wait_for_loop_ready(ha);
+ set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
+ if (qla2x00_abort_isp(ha)) {
+ clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
+ /* failed. schedule dpc to try */
+ set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
+
+ if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
+ goto board_disabled;
+ }
+
+ clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
+
+ spin_lock_irq(ha->host->host_lock);
+ if (rval == FAILED)
+ goto out;
+
+ /* Waiting for our command in done_queue to be returned to OS.*/
+ if (!qla2x00_eh_wait_for_pending_commands(ha))
+ rval = FAILED;
+
+ out:
+ qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
+ (rval == FAILED) ? "failed" : "succeded");
+
+ return rval;
+
+ board_disabled:
+ spin_lock_irq(ha->host->host_lock);
+
+ qla_printk(KERN_INFO, ha, "%s: failed:board disabled\n", __func__);
+ return FAILED;
+}
+
+
+/*
+* qla2x00_loop_reset
+* Issue loop reset.
+*
+* Input:
+* ha = adapter block pointer.
+*
+* Returns:
+* 0 = success
+*/
+static int
+qla2x00_loop_reset(scsi_qla_host_t *ha)
+{
+ int status = QLA_SUCCESS;
+ uint16_t t;
+ os_tgt_t *tq;
+
+ if (ha->flags.enable_lip_reset) {
+ status = qla2x00_lip_reset(ha);
+ }
+
+ if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
+ for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
+ if ((tq = TGT_Q(ha, t)) == NULL)
+ continue;
+
+ if (tq->fcport == NULL)
+ continue;
+
+ status = qla2x00_target_reset(ha, 0, t);
+ if (status != QLA_SUCCESS) {
+ break;
+ }
+ }
+ }
+
+ if (status == QLA_SUCCESS &&
+ ((!ha->flags.enable_target_reset &&
+ !ha->flags.enable_lip_reset) ||
+ ha->flags.enable_lip_full_login)) {
+
+ status = qla2x00_full_login_lip(ha);
+ }
+
+ /* Issue marker command only when we are going to start the I/O */
+ ha->marker_needed = 1;
+
+ if (status) {
+ /* Empty */
+ DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
+ __func__,
+ ha->host_no);)
+ } else {
+ /* Empty */
+ DEBUG3(printk("%s(%ld): exiting normally.\n",
+ __func__,
+ ha->host_no);)
+ }
+
+ return(status);
+}
+
+/*
+ * qla2x00_device_reset
+ * Issue bus device reset message to the target.
+ *
+ * Input:
+ * ha = adapter block pointer.
+ * t = SCSI ID.
+ * TARGET_QUEUE_LOCK must be released.
+ * ADAPTER_STATE_LOCK must be released.
+ *
+ * Context:
+ * Kernel context.
+ */
+static int
+qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
+{
+ /* Abort Target command will clear Reservation */
+ return qla2x00_abort_target(reset_fcport);
+}
+
+/**************************************************************************
+* qla2xxx_slave_configure
+*
+* Description:
+**************************************************************************/
+int
+qla2xxx_slave_configure(struct scsi_device *sdev)
+{
+ scsi_qla_host_t *ha = to_qla_host(sdev->host);
+ int queue_depth;
+
+ if (IS_QLA2100(ha) || IS_QLA2200(ha))
+ queue_depth = 16;
+ else
+ queue_depth = 32;
+
+ if (sdev->tagged_supported) {
+ if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
+ queue_depth = ql2xmaxqdepth;
+
+ ql2xmaxqdepth = queue_depth;
+
+ scsi_activate_tcq(sdev, queue_depth);
+
+ qla_printk(KERN_INFO, ha,
+ "scsi(%d:%d:%d:%d): Enabled tagged queuing, queue "
+ "depth %d.\n",
+ sdev->host->host_no, sdev->channel, sdev->id, sdev->lun,
+ sdev->queue_depth);
+ } else {
+ scsi_adjust_queue_depth(sdev, 0 /* TCQ off */,
+ sdev->host->hostt->cmd_per_lun /* 3 */);
+ }
+
+ return (0);
+}
+
+/**
+ * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
+ * @ha: HA context
+ *
+ * At exit, the @ha's flags.enable_64bit_addressing set to indicated
+ * supported addressing method.
+ */
+static void
+qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
+{
+ /* Assume 32bit DMA address */
+ ha->flags.enable_64bit_addressing = 0;
+ ha->calc_request_entries = qla2x00_calc_iocbs_32;
+ ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32;
+
+ /*
+ * Given the two variants pci_set_dma_mask(), allow the compiler to
+ * assist in setting the proper dma mask.
+ */
+ if (sizeof(dma_addr_t) > 4) {
+ if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
+ ha->flags.enable_64bit_addressing = 1;
+ ha->calc_request_entries = qla2x00_calc_iocbs_64;
+ ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64;
+
+ if (pci_set_consistent_dma_mask(ha->pdev,
+ DMA_64BIT_MASK)) {
+ qla_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 {
+ qla_printk(KERN_DEBUG, ha,
+ "Failed to set 64 bit PCI DMA mask, falling back "
+ "to 32 bit MASK.\n");
+ pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
+ }
+ } else {
+ pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
+ }
+}
+
+static int
+qla2x00_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) {
+ qla_printk(KERN_WARNING, ha,
+ "Invalid PCI I/O region size (%s)...\n",
+ pci_name(ha->pdev));
+ pio = 0;
+ }
+ } else {
+ qla_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)) {
+ qla_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) {
+ qla_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, ha->brd_info->drv_name)) {
+ qla_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->iobase = ioremap(mmio, MIN_IOBASE_LEN);
+ if (!ha->iobase) {
+ qla_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);
+}
+
+/*
+ * PCI driver interface
+ */
+int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
+{
+ int ret;
+ device_reg_t __iomem *reg;
+ struct Scsi_Host *host;
+ scsi_qla_host_t *ha;
+ unsigned long flags = 0;
+ unsigned long wait_switch = 0;
+ char pci_info[20];
+ char fw_str[30];
+
+ if (pci_enable_device(pdev))
+ return -1;
+
+ host = scsi_host_alloc(&qla2x00_driver_template,
+ sizeof(scsi_qla_host_t));
+ if (host == NULL) {
+ printk(KERN_WARNING
+ "qla2xxx: 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));
+
+ ha->pdev = pdev;
+ ha->host = host;
+ ha->host_no = host->host_no;
+ ha->brd_info = brd_info;
+ sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
+
+ /* Configure PCI I/O space */
+ ret = qla2x00_iospace_config(ha);
+ if (ret != 0) {
+ goto probe_failed;
+ }
+
+ /* Sanitize the information from PCI BIOS. */
+ host->irq = pdev->irq;
+
+ qla_printk(KERN_INFO, ha,
+ "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
+ host->irq, ha->iobase);
+
+ spin_lock_init(&ha->hardware_lock);
+
+ /* 4.23 Initialize /proc/scsi/qla2x00 counters */
+ ha->actthreads = 0;
+ ha->qthreads = 0;
+ ha->total_isr_cnt = 0;
+ ha->total_isp_aborts = 0;
+ ha->total_lip_cnt = 0;
+ ha->total_dev_errs = 0;
+ ha->total_ios = 0;
+ ha->total_bytes = 0;
+
+ ha->prev_topology = 0;
+ ha->ports = MAX_BUSES;
+
+ if (IS_QLA2100(ha)) {
+ ha->max_targets = MAX_TARGETS_2100;
+ ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
+ ha->request_q_length = REQUEST_ENTRY_CNT_2100;
+ ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
+ ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
+ host->sg_tablesize = 32;
+ } else if (IS_QLA2200(ha)) {
+ ha->max_targets = MAX_TARGETS_2200;
+ ha->mbx_count = MAILBOX_REGISTER_COUNT;
+ ha->request_q_length = REQUEST_ENTRY_CNT_2200;
+ ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
+ ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
+ } else /*if (IS_QLA2300(ha))*/ {
+ ha->max_targets = MAX_TARGETS_2200;
+ ha->mbx_count = MAILBOX_REGISTER_COUNT;
+ ha->request_q_length = REQUEST_ENTRY_CNT_2200;
+ ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
+ ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
+ }
+ host->can_queue = ha->request_q_length + 128;
+
+ /* load the F/W, read paramaters, and init the H/W */
+ ha->instance = num_hosts;
+
+ init_MUTEX(&ha->mbx_cmd_sem);
+ init_MUTEX_LOCKED(&ha->mbx_intr_sem);
+
+ INIT_LIST_HEAD(&ha->list);
+ INIT_LIST_HEAD(&ha->fcports);
+ INIT_LIST_HEAD(&ha->rscn_fcports);
+ INIT_LIST_HEAD(&ha->done_queue);
+ INIT_LIST_HEAD(&ha->retry_queue);
+ INIT_LIST_HEAD(&ha->scsi_retry_queue);
+ INIT_LIST_HEAD(&ha->pending_queue);
+
+ /*
+ * These locks are used to prevent more than one CPU
+ * from modifying the queue at the same time. The
+ * higher level "host_lock" will reduce most
+ * contention for these locks.
+ */
+ spin_lock_init(&ha->mbx_reg_lock);
+ spin_lock_init(&ha->list_lock);
+
+ ha->dpc_pid = -1;
+ init_completion(&ha->dpc_inited);
+ init_completion(&ha->dpc_exited);
+
+ qla2x00_config_dma_addressing(ha);
+ if (qla2x00_mem_alloc(ha)) {
+ qla_printk(KERN_WARNING, ha,
+ "[ERROR] Failed to allocate memory for adapter\n");
+
+ goto probe_failed;
+ }
+
+ if (qla2x00_initialize_adapter(ha) &&
+ !(ha->device_flags & DFLG_NO_CABLE)) {
+
+ qla_printk(KERN_WARNING, ha,
+ "Failed to initialize adapter\n");
+
+ DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
+ "Adapter flags %x.\n",
+ ha->host_no, ha->device_flags));
+
+ goto probe_failed;
+ }
+
+ /*
+ * Startup the kernel thread for this host adapter
+ */
+ ha->dpc_should_die = 0;
+ ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
+ if (ha->dpc_pid < 0) {
+ qla_printk(KERN_WARNING, ha,
+ "Unable to start DPC thread!\n");
+
+ goto probe_failed;
+ }
+ wait_for_completion(&ha->dpc_inited);
+
+ host->this_id = 255;
+ host->cmd_per_lun = 3;
+ host->max_cmd_len = MAX_CMDSZ;
+ host->max_channel = ha->ports - 1;
+ host->max_lun = ha->max_luns;
+ BUG_ON(qla2xxx_transport_template == NULL);
+ host->transportt = qla2xxx_transport_template;
+ host->unique_id = ha->instance;
+ host->max_id = ha->max_targets;
+
+ if (IS_QLA2100(ha) || IS_QLA2200(ha))
+ ret = request_irq(host->irq, qla2100_intr_handler,
+ SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
+ else
+ ret = request_irq(host->irq, qla2300_intr_handler,
+ SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
+ if (ret != 0) {
+ qla_printk(KERN_WARNING, ha,
+ "Failed to reserve interrupt %d already in use.\n",
+ host->irq);
+ goto probe_failed;
+ }
+
+ /* Initialized the timer */
+ qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
+
+ DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
+ ha->host_no, ha));
+
+ reg = ha->iobase;
+
+ /* Disable ISP interrupts. */
+ qla2x00_disable_intrs(ha);
+
+ /* Ensure mailbox registers are free. */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ WRT_REG_WORD(®->semaphore, 0);
+ WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
+ WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT);
+
+ /* Enable proper parity */
+ if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
+ if (IS_QLA2300(ha))
+ /* SRAM parity */
+ WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1));
+ else
+ /* SRAM, Instruction RAM and GP RAM parity */
+ WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7));
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* Enable chip interrupts. */
+ qla2x00_enable_intrs(ha);
+
+ /* v2.19.5b6 */
+ /*
+ * Wait around max loop_reset_delay secs for the devices to come
+ * on-line. We don't want Linux scanning before we are ready.
+ *
+ */
+ for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
+ time_before(jiffies,wait_switch) &&
+ !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
+ && (ha->device_flags & SWITCH_FOUND) ;) {
+
+ qla2x00_check_fabric_devices(ha);
+
+ msleep(10);
+ }
+
+ pci_set_drvdata(pdev, ha);
+ ha->flags.init_done = 1;
+ num_hosts++;
+
+ /* List the target we have found */
+ if (displayConfig) {
+ qla2x00_display_fc_names(ha);
+ }
+
+ if (scsi_add_host(host, &pdev->dev))
+ goto probe_failed;
+
+ sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
+ sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
+
+ qla_printk(KERN_INFO, ha, "\n"
+ " QLogic Fibre Channel HBA Driver: %s\n"
+ " QLogic %s - %s\n"
+ " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
+ ha->model_number, ha->model_desc ? ha->model_desc: "",
+ ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info),
+ pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
+ ha->host_no, qla2x00_get_fw_version_str(ha, fw_str));
+
+ if (ql2xdoinitscan)
+ scsi_scan_host(host);
+
+ return 0;
+
+probe_failed:
+ qla2x00_free_device(ha);
+
+ scsi_host_put(host);
+
+probe_disable_device:
+ pci_disable_device(pdev);
+
+ return -1;
+}
+EXPORT_SYMBOL_GPL(qla2x00_probe_one);
+
+void qla2x00_remove_one(struct pci_dev *pdev)
+{
+ scsi_qla_host_t *ha;
+
+ ha = pci_get_drvdata(pdev);
+
+ sysfs_remove_bin_file(&ha->host->shost_gendev.kobj,
+ &sysfs_fw_dump_attr);
+ sysfs_remove_bin_file(&ha->host->shost_gendev.kobj, &sysfs_nvram_attr);
+
+ scsi_remove_host(ha->host);
+
+ qla2x00_free_device(ha);
+
+ scsi_host_put(ha->host);
+
+ pci_set_drvdata(pdev, NULL);
+}
+EXPORT_SYMBOL_GPL(qla2x00_remove_one);
+
+static void
+qla2x00_free_device(scsi_qla_host_t *ha)
+{
+ int ret;
+
+ /* Abort any outstanding IO descriptors. */
+ if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
+ qla2x00_cancel_io_descriptors(ha);
+
+ /* turn-off interrupts on the card */
+ if (ha->interrupts_on)
+ qla2x00_disable_intrs(ha);
+
+ /* Disable timer */
+ if (ha->timer_active)
+ qla2x00_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) {
+ qla_printk(KERN_ERR, ha,
+ "Unable to signal DPC thread -- (%d)\n", ret);
+
+ /* TODO: SOMETHING MORE??? */
+ } else {
+ wait_for_completion(&ha->dpc_exited);
+ }
+ }
+
+ qla2x00_mem_free(ha);
+
+
+ ha->flags.online = 0;
+
+ /* Detach interrupts */
+ if (ha->pdev->irq)
+ free_irq(ha->pdev->irq, ha);
+
+ /* release io space registers */
+ if (ha->iobase)
+ iounmap(ha->iobase);
+ pci_release_regions(ha->pdev);
+
+ pci_disable_device(ha->pdev);
+}
+
+
+/*
+ * The following support functions are adopted to handle
+ * the re-entrant qla2x00_proc_info correctly.
+ */
+static void
+copy_mem_info(struct info_str *info, char *data, int len)
+{
+ if (info->pos + len > info->offset + info->length)
+ len = info->offset + info->length - info->pos;
+
+ if (info->pos + len < info->offset) {
+ info->pos += len;
+ return;
+ }
+
+ if (info->pos < info->offset) {
+ off_t partial;
+
+ partial = info->offset - info->pos;
+ data += partial;
+ info->pos += partial;
+ len -= partial;
+ }
+
+ if (len > 0) {
+ memcpy(info->buffer, data, len);
+ info->pos += len;
+ info->buffer += len;
+ }
+}
+
+static int
+copy_info(struct info_str *info, char *fmt, ...)
+{
+ va_list args;
+ char buf[256];
+ int len;
+
+ va_start(args, fmt);
+ len = vsprintf(buf, fmt, args);
+ va_end(args);
+
+ copy_mem_info(info, buf, len);
+
+ return (len);
+}
+
+/*************************************************************************
+* qla2x00_proc_info
+*
+* Description:
+* Return information to handle /proc support for the driver.
+*
+* inout : decides the direction of the dataflow and the meaning of the
+* variables
+* buffer: If inout==0 data is being written to it else read from it
+* (ptr to a page buffer)
+* *start: If inout==0 start of the valid data in the buffer
+* offset: If inout==0 starting offset from the beginning of all
+* possible data to return.
+* length: If inout==0 max number of bytes to be written into the buffer
+* else number of bytes in "buffer"
+* Returns:
+* < 0: error. errno value.
+* >= 0: sizeof data returned.
+*************************************************************************/
+int
+qla2x00_proc_info(struct Scsi_Host *shost, char *buffer,
+ char **start, off_t offset, int length, int inout)
+{
+ struct info_str info;
+ int retval = -EINVAL;
+ os_lun_t *up;
+ os_tgt_t *tq;
+ unsigned int t, l;
+ uint32_t tmp_sn;
+ uint32_t *flags;
+ uint8_t *loop_state;
+ scsi_qla_host_t *ha;
+ char fw_info[30];
+
+ DEBUG3(printk(KERN_INFO
+ "Entering proc_info buff_in=%p, offset=0x%lx, length=0x%x\n",
+ buffer, offset, length);)
+
+ ha = (scsi_qla_host_t *) shost->hostdata;
+
+ if (inout) {
+ /* Has data been written to the file? */
+ DEBUG3(printk(
+ "%s: has data been written to the file. \n",
+ __func__);)
+
+ return -ENOSYS;
+ }
+
+ if (start) {
+ *start = buffer;
+ }
+
+ info.buffer = buffer;
+ info.length = length;
+ info.offset = offset;
+ info.pos = 0;
+
+ /* start building the print buffer */
+ copy_info(&info,
+ "QLogic PCI to Fibre Channel Host Adapter for %s:\n"
+ " Firmware version %s, ",
+ ha->model_number, qla2x00_get_fw_version_str(ha, fw_info));
+
+ copy_info(&info, "Driver version %s\n", qla2x00_version_str);
+
+ tmp_sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) |
+ ha->serial1;
+ copy_info(&info, "ISP: %s, Serial# %c%05d\n",
+ ha->brd_info->isp_name, ('A' + tmp_sn/100000), (tmp_sn%100000));
+
+ copy_info(&info,
+ "Request Queue = 0x%llx, Response Queue = 0x%llx\n",
+ (unsigned long long)ha->request_dma,
+ (unsigned long long)ha->response_dma);
+
+ copy_info(&info,
+ "Request Queue count = %d, Response Queue count = %d\n",
+ ha->request_q_length, ha->response_q_length);
+
+ copy_info(&info,
+ "Total number of active commands = %ld\n",
+ ha->actthreads);
+
+ copy_info(&info,
+ "Total number of interrupts = %ld\n",
+ (long)ha->total_isr_cnt);
+
+ copy_info(&info,
+ " Device queue depth = 0x%x\n",
+ (ql2xmaxqdepth == 0) ? 16 : ql2xmaxqdepth);
+
+ copy_info(&info,
+ "Number of free request entries = %d\n", ha->req_q_cnt);
+
+ copy_info(&info,
+ "Number of mailbox timeouts = %ld\n", ha->total_mbx_timeout);
+
+ copy_info(&info,
+ "Number of ISP aborts = %ld\n", ha->total_isp_aborts);
+
+ copy_info(&info,
+ "Number of loop resyncs = %ld\n", ha->total_loop_resync);
+
+ copy_info(&info,
+ "Number of retries for empty slots = %ld\n",
+ qla2x00_stats.outarray_full);
+
+ copy_info(&info,
+ "Number of reqs in pending_q= %ld, retry_q= %d, "
+ "done_q= %ld, scsi_retry_q= %d\n",
+ ha->qthreads, ha->retry_q_cnt,
+ ha->done_q_cnt, ha->scsi_retry_q_cnt);
+
+
+ flags = (uint32_t *) &ha->flags;
+
+ if (atomic_read(&ha->loop_state) == LOOP_DOWN) {
+ loop_state = "DOWN";
+ } else if (atomic_read(&ha->loop_state) == LOOP_UP) {
+ loop_state = "UP";
+ } else if (atomic_read(&ha->loop_state) == LOOP_READY) {
+ loop_state = "READY";
+ } else if (atomic_read(&ha->loop_state) == LOOP_TIMEOUT) {
+ loop_state = "TIMEOUT";
+ } else if (atomic_read(&ha->loop_state) == LOOP_UPDATE) {
+ loop_state = "UPDATE";
+ } else {
+ loop_state = "UNKNOWN";
+ }
+
+ copy_info(&info,
+ "Host adapter:loop state = <%s>, flags = 0x%lx\n",
+ loop_state , *flags);
+
+ copy_info(&info, "Dpc flags = 0x%lx\n", ha->dpc_flags);
+
+ copy_info(&info, "MBX flags = 0x%x\n", ha->mbx_flags);
+
+ copy_info(&info, "Link down Timeout = %3.3d\n",
+ ha->link_down_timeout);
+
+ copy_info(&info, "Port down retry = %3.3d\n",
+ ha->port_down_retry_count);
+
+ copy_info(&info, "Login retry count = %3.3d\n",
+ ha->login_retry_count);
+
+ copy_info(&info,
+ "Commands retried with dropped frame(s) = %d\n",
+ ha->dropped_frame_error_cnt);
+
+ copy_info(&info,
+ "Product ID = %04x %04x %04x %04x\n", ha->product_id[0],
+ ha->product_id[1], ha->product_id[2], ha->product_id[3]);
+
+ copy_info(&info, "\n");
+
+ /* 2.25 node/port display to proc */
+ /* Display the node name for adapter */
+ copy_info(&info, "\nSCSI Device Information:\n");
+ copy_info(&info,
+ "scsi-qla%d-adapter-node="
+ "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
+ (int)ha->instance,
+ ha->init_cb->node_name[0],
+ ha->init_cb->node_name[1],
+ ha->init_cb->node_name[2],
+ ha->init_cb->node_name[3],
+ ha->init_cb->node_name[4],
+ ha->init_cb->node_name[5],
+ ha->init_cb->node_name[6],
+ ha->init_cb->node_name[7]);
+
+ /* display the port name for adapter */
+ copy_info(&info,
+ "scsi-qla%d-adapter-port="
+ "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
+ (int)ha->instance,
+ ha->init_cb->port_name[0],
+ ha->init_cb->port_name[1],
+ ha->init_cb->port_name[2],
+ ha->init_cb->port_name[3],
+ ha->init_cb->port_name[4],
+ ha->init_cb->port_name[5],
+ ha->init_cb->port_name[6],
+ ha->init_cb->port_name[7]);
+
+ /* Print out device port names */
+ for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
+ if ((tq = TGT_Q(ha, t)) == NULL)
+ continue;
+
+ copy_info(&info,
+ "scsi-qla%d-target-%d="
+ "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
+ (int)ha->instance, t,
+ tq->port_name[0], tq->port_name[1],
+ tq->port_name[2], tq->port_name[3],
+ tq->port_name[4], tq->port_name[5],
+ tq->port_name[6], tq->port_name[7]);
+ }
+
+ copy_info(&info, "\nSCSI LUN Information:\n");
+ copy_info(&info,
+ "(Id:Lun) * - indicates lun is not registered with the OS.\n");
+
+ /* scan for all equipment stats */
+ for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
+ /* scan all luns */
+ for (l = 0; l < ha->max_luns; l++) {
+ up = (os_lun_t *) GET_LU_Q(ha, t, l);
+
+ if (up == NULL) {
+ continue;
+ }
+ if (up->fclun == NULL) {
+ continue;
+ }
+
+ copy_info(&info,
+ "(%2d:%2d): Total reqs %ld,",
+ t,l,up->io_cnt);
+
+ copy_info(&info,
+ " Pending reqs %ld,",
+ up->out_cnt);
+
+ if (up->io_cnt < 4) {
+ copy_info(&info,
+ " flags 0x%x*,",
+ (int)up->q_flag);
+ } else {
+ copy_info(&info,
+ " flags 0x%x,",
+ (int)up->q_flag);
+ }
+
+ copy_info(&info,
+ " %ld:%d:%02x %02x",
+ up->fclun->fcport->ha->instance,
+ up->fclun->fcport->cur_path,
+ up->fclun->fcport->loop_id,
+ up->fclun->device_type);
+
+ copy_info(&info, "\n");
+
+ if (info.pos >= info.offset + info.length) {
+ /* No need to continue */
+ goto profile_stop;
+ }
+ }
+
+ if (info.pos >= info.offset + info.length) {
+ /* No need to continue */
+ break;
+ }
+ }
+
+profile_stop:
+
+ retval = info.pos > info.offset ? info.pos - info.offset : 0;
+
+ DEBUG3(printk(KERN_INFO
+ "Exiting proc_info: info.pos=%d, offset=0x%lx, "
+ "length=0x%x\n", info.pos, offset, length);)
+
+ return (retval);
+}
+
+/*
+* qla2x00_display_fc_names
+* This routine will the node names of the different devices found
+* after port inquiry.
+*
+* Input:
+* cmd = SCSI command structure
+*
+* Returns:
+* None.
+*/
+static void
+qla2x00_display_fc_names(scsi_qla_host_t *ha)
+{
+ uint16_t tgt;
+ os_tgt_t *tq;
+
+ /* Display the node name for adapter */
+ qla_printk(KERN_INFO, ha,
+ "scsi-qla%d-adapter-node=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
+ (int)ha->instance,
+ ha->init_cb->node_name[0],
+ ha->init_cb->node_name[1],
+ ha->init_cb->node_name[2],
+ ha->init_cb->node_name[3],
+ ha->init_cb->node_name[4],
+ ha->init_cb->node_name[5],
+ ha->init_cb->node_name[6],
+ ha->init_cb->node_name[7]);
+
+ /* display the port name for adapter */
+ qla_printk(KERN_INFO, ha,
+ "scsi-qla%d-adapter-port=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
+ (int)ha->instance,
+ ha->init_cb->port_name[0],
+ ha->init_cb->port_name[1],
+ ha->init_cb->port_name[2],
+ ha->init_cb->port_name[3],
+ ha->init_cb->port_name[4],
+ ha->init_cb->port_name[5],
+ ha->init_cb->port_name[6],
+ ha->init_cb->port_name[7]);
+
+ /* Print out device port names */
+ for (tgt = 0; tgt < MAX_TARGETS; tgt++) {
+ if ((tq = ha->otgt[tgt]) == NULL)
+ continue;
+
+ if (tq->fcport == NULL)
+ continue;
+
+ switch (ha->binding_type) {
+ case BIND_BY_PORT_NAME:
+ qla_printk(KERN_INFO, ha,
+ "scsi-qla%d-tgt-%d-di-0-port="
+ "%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
+ (int)ha->instance,
+ tgt,
+ tq->port_name[0],
+ tq->port_name[1],
+ tq->port_name[2],
+ tq->port_name[3],
+ tq->port_name[4],
+ tq->port_name[5],
+ tq->port_name[6],
+ tq->port_name[7]);
+
+ break;
+
+ case BIND_BY_PORT_ID:
+ qla_printk(KERN_INFO, ha,
+ "scsi-qla%d-tgt-%d-di-0-pid="
+ "%02x%02x%02x\\;\n",
+ (int)ha->instance,
+ tgt,
+ tq->d_id.b.domain,
+ tq->d_id.b.area,
+ tq->d_id.b.al_pa);
+ break;
+ }
+
+#if VSA
+ qla_printk(KERN_INFO, ha,
+ "scsi-qla%d-target-%d-vsa=01;\n", (int)ha->instance, tgt);
+#endif
+ }
+}
+
+/*
+ * qla2x00_suspend_lun
+ * Suspend lun and start port down timer
+ *
+ * Input:
+ * ha = visable adapter block pointer.
+ * lq = lun queue
+ * cp = Scsi command pointer
+ * time = time in seconds
+ * count = number of times to let time expire
+ * delay_lun = non-zero, if lun should be delayed rather than suspended
+ *
+ * Return:
+ * QLA_SUCCESS -- suspended lun
+ * QLA_FUNCTION_FAILED -- Didn't suspend lun
+ *
+ * Context:
+ * Interrupt context.
+ */
+int
+__qla2x00_suspend_lun(scsi_qla_host_t *ha,
+ os_lun_t *lq, int time, int count, int delay_lun)
+{
+ int rval;
+ srb_t *sp;
+ struct list_head *list, *temp;
+ unsigned long flags;
+
+ rval = QLA_SUCCESS;
+
+ /* if the lun_q is already suspended then don't do it again */
+ if (lq->q_state == LUN_STATE_READY ||lq->q_state == LUN_STATE_RUN) {
+
+ spin_lock_irqsave(&lq->q_lock, flags);
+ if (lq->q_state == LUN_STATE_READY) {
+ lq->q_max = count;
+ lq->q_count = 0;
+ }
+ /* Set the suspend time usually 6 secs */
+ atomic_set(&lq->q_timer, time);
+
+ /* now suspend the lun */
+ lq->q_state = LUN_STATE_WAIT;
+
+ if (delay_lun) {
+ set_bit(LUN_EXEC_DELAYED, &lq->q_flag);
+ DEBUG(printk(KERN_INFO
+ "scsi(%ld): Delay lun execution for %d secs, "
+ "count=%d, max count=%d, state=%d\n",
+ ha->host_no,
+ time,
+ lq->q_count, lq->q_max, lq->q_state));
+ } else {
+ DEBUG(printk(KERN_INFO
+ "scsi(%ld): Suspend lun for %d secs, count=%d, "
+ "max count=%d, state=%d\n",
+ ha->host_no,
+ time,
+ lq->q_count, lq->q_max, lq->q_state));
+ }
+ spin_unlock_irqrestore(&lq->q_lock, flags);
+
+ /*
+ * Remove all pending commands from request queue and put them
+ * in the scsi_retry queue.
+ */
+ spin_lock_irqsave(&ha->list_lock, flags);
+ list_for_each_safe(list, temp, &ha->pending_queue) {
+ sp = list_entry(list, srb_t, list);
+ if (sp->lun_queue != lq)
+ continue;
+
+ __del_from_pending_queue(ha, sp);
+
+ if (sp->cmd->allowed < count)
+ sp->cmd->allowed = count;
+ __add_to_scsi_retry_queue(ha, sp);
+
+ } /* list_for_each_safe */
+ spin_unlock_irqrestore(&ha->list_lock, flags);
+ rval = QLA_SUCCESS;
+ } else {
+ rval = QLA_FUNCTION_FAILED;
+ }
+
+ return (rval);
+}
+
+/*
+ * qla2x00_mark_device_lost Updates fcport state when device goes offline.
+ *
+ * Input: ha = adapter block pointer. fcport = port structure pointer.
+ *
+ * Return: None.
+ *
+ * Context:
+ */
+void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
+ int do_login)
+{
+ /*
+ * We may need to retry the login, so don't change the state of the
+ * port but do the retries.
+ */
+ if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
+ atomic_set(&fcport->state, FCS_DEVICE_LOST);
+
+ if (!do_login)
+ return;
+
+ if (fcport->login_retry == 0) {
+ fcport->login_retry = ha->login_retry_count;
+ set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
+
+ DEBUG(printk("scsi(%ld): Port login retry: "
+ "%02x%02x%02x%02x%02x%02x%02x%02x, "
+ "id = 0x%04x retry cnt=%d\n",
+ ha->host_no,
+ fcport->port_name[0],
+ fcport->port_name[1],
+ fcport->port_name[2],
+ fcport->port_name[3],
+ fcport->port_name[4],
+ fcport->port_name[5],
+ fcport->port_name[6],
+ fcport->port_name[7],
+ fcport->loop_id,
+ fcport->login_retry));
+ }
+}
+
+/*
+ * qla2x00_mark_all_devices_lost
+ * Updates fcport state when device goes offline.
+ *
+ * Input:
+ * ha = adapter block pointer.
+ * fcport = port structure pointer.
+ *
+ * Return:
+ * None.
+ *
+ * Context:
+ */
+void
+qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
+{
+ fc_port_t *fcport;
+
+ list_for_each_entry(fcport, &ha->fcports, list) {
+ if (fcport->port_type != FCT_TARGET)
+ continue;
+
+ /*
+ * No point in marking the device as lost, if the device is
+ * already DEAD.
+ */
+ if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
+ continue;
+
+ atomic_set(&fcport->state, FCS_DEVICE_LOST);
+ }
+}
+
+/*
+* qla2x00_mem_alloc
+* Allocates adapter memory.
+*
+* Returns:
+* 0 = success.
+* 1 = failure.
+*/
+static uint8_t
+qla2x00_mem_alloc(scsi_qla_host_t *ha)
+{
+ char name[16];
+ uint8_t status = 1;
+ int retry= 10;
+
+ do {
+ /*
+ * This will loop only once if everything goes well, else some
+ * number of retries will be performed to get around a kernel
+ * bug where available mem is not allocated until after a
+ * little delay and a retry.
+ */
+ ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
+ (ha->request_q_length + 1) * sizeof(request_t),
+ &ha->request_dma, GFP_KERNEL);
+ if (ha->request_ring == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - request_ring\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
+ (ha->response_q_length + 1) * sizeof(response_t),
+ &ha->response_dma, GFP_KERNEL);
+ if (ha->response_ring == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - response_ring\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
+ &ha->gid_list_dma, GFP_KERNEL);
+ if (ha->gid_list == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - gid_list\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
+ if (ha->rlc_rsp == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - rlc");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
+ ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
+ DMA_POOL_SIZE, 8, 0);
+ if (ha->s_dma_pool == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - s_dma_pool\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ /* get consistent memory allocated for init control block */
+ ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
+ &ha->init_cb_dma);
+ if (ha->init_cb == NULL) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - init_cb\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+ memset(ha->init_cb, 0, sizeof(init_cb_t));
+
+ /* Get consistent memory allocated for Get Port Database cmd */
+ ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
+ &ha->iodesc_pd_dma);
+ if (ha->iodesc_pd == NULL) {
+ /* error */
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - iodesc_pd\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+ memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
+
+ /* Allocate ioctl related memory. */
+ if (qla2x00_alloc_ioctl_mem(ha)) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - ioctl_mem\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ if (qla2x00_allocate_sp_pool(ha)) {
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - "
+ "qla2x00_allocate_sp_pool()\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+
+ /* Allocate memory for SNS commands */
+ if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
+ /* Get consistent memory allocated for SNS commands */
+ ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
+ GFP_KERNEL);
+ if (ha->sns_cmd == NULL) {
+ /* error */
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - sns_cmd\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+ memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
+ } else {
+ /* Get consistent memory allocated for MS IOCB */
+ ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
+ &ha->ms_iocb_dma);
+ if (ha->ms_iocb == NULL) {
+ /* error */
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - ms_iocb\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+ memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
+
+ /*
+ * Get consistent memory allocated for CT SNS
+ * commands
+ */
+ ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
+ sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
+ GFP_KERNEL);
+ if (ha->ct_sns == NULL) {
+ /* error */
+ qla_printk(KERN_WARNING, ha,
+ "Memory Allocation failed - ct_sns\n");
+
+ qla2x00_mem_free(ha);
+ msleep(100);
+
+ continue;
+ }
+ memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
+ }
+
+ /* Done all allocations without any error. */
+ status = 0;
+
+ } while (retry-- && status != 0);
+
+ if (status) {
+ printk(KERN_WARNING
+ "%s(): **** FAILED ****\n", __func__);
+ }
+
+ return(status);
+}
+
+/*
+* qla2x00_mem_free
+* Frees all adapter allocated memory.
+*
+* Input:
+* ha = adapter block pointer.
+*/
+static void
+qla2x00_mem_free(scsi_qla_host_t *ha)
+{
+ uint32_t t;
+ struct list_head *fcpl, *fcptemp;
+ fc_port_t *fcport;
+ struct list_head *fcll, *fcltemp;
+ fc_lun_t *fclun;
+ unsigned long wtime;/* max wait time if mbx cmd is busy. */
+
+ if (ha == NULL) {
+ /* error */
+ DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
+ return;
+ }
+
+ /* Free the target queues */
+ for (t = 0; t < MAX_TARGETS; t++) {
+ qla2x00_tgt_free(ha, t);
+ }
+
+ /* Make sure all other threads are stopped. */
+ wtime = 60 * HZ;
+ while (ha->dpc_wait && wtime) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ wtime = schedule_timeout(wtime);
+ }
+
+ /* free ioctl memory */
+ qla2x00_free_ioctl_mem(ha);
+
+ /* free sp pool */
+ qla2x00_free_sp_pool(ha);
+
+ if (ha->sns_cmd)
+ dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
+ ha->sns_cmd, ha->sns_cmd_dma);
+
+ if (ha->ct_sns)
+ dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
+ ha->ct_sns, ha->ct_sns_dma);
+
+ if (ha->ms_iocb)
+ dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
+
+ if (ha->iodesc_pd)
+ dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
+
+ if (ha->init_cb)
+ dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
+
+ if (ha->s_dma_pool)
+ dma_pool_destroy(ha->s_dma_pool);
+
+ if (ha->rlc_rsp)
+ dma_free_coherent(&ha->pdev->dev,
+ sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
+ ha->rlc_rsp_dma);
+
+ if (ha->gid_list)
+ dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
+ ha->gid_list_dma);
+
+ if (ha->response_ring)
+ dma_free_coherent(&ha->pdev->dev,
+ (ha->response_q_length + 1) * sizeof(response_t),
+ ha->response_ring, ha->response_dma);
+
+ if (ha->request_ring)
+ dma_free_coherent(&ha->pdev->dev,
+ (ha->request_q_length + 1) * sizeof(request_t),
+ ha->request_ring, ha->request_dma);
+
+ ha->sns_cmd = NULL;
+ ha->sns_cmd_dma = 0;
+ ha->ct_sns = NULL;
+ ha->ct_sns_dma = 0;
+ ha->ms_iocb = NULL;
+ ha->ms_iocb_dma = 0;
+ ha->iodesc_pd = NULL;
+ ha->iodesc_pd_dma = 0;
+ ha->init_cb = NULL;
+ ha->init_cb_dma = 0;
+
+ ha->s_dma_pool = NULL;
+
+ ha->rlc_rsp = NULL;
+ ha->rlc_rsp_dma = 0;
+ ha->gid_list = NULL;
+ ha->gid_list_dma = 0;
+
+ ha->response_ring = NULL;
+ ha->response_dma = 0;
+ ha->request_ring = NULL;
+ ha->request_dma = 0;
+
+ list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
+ fcport = list_entry(fcpl, fc_port_t, list);
+
+ /* fc luns */
+ list_for_each_safe(fcll, fcltemp, &fcport->fcluns) {
+ fclun = list_entry(fcll, fc_lun_t, list);
+
+ list_del_init(&fclun->list);
+ kfree(fclun);
+ }
+
+ /* fc ports */
+ list_del_init(&fcport->list);
+ kfree(fcport);
+ }
+ INIT_LIST_HEAD(&ha->fcports);
+
+ if (ha->fw_dump)
+ free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
+
+ if (ha->fw_dump_buffer)
+ vfree(ha->fw_dump_buffer);
+
+ ha->fw_dump = NULL;
+ ha->fw_dump_reading = 0;
+ ha->fw_dump_buffer = NULL;
+}
+
+/*
+ * qla2x00_allocate_sp_pool
+ * This routine is called during initialization to allocate
+ * memory for local srb_t.
+ *
+ * Input:
+ * ha = adapter block pointer.
+ *
+ * Context:
+ * Kernel context.
+ *
+ * Note: Sets the ref_count for non Null sp to one.
+ */
+static int
+qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
+{
+ int rval;
+
+ rval = QLA_SUCCESS;
+ ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
+ mempool_free_slab, srb_cachep);
+ if (ha->srb_mempool == NULL) {
+ qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
+ rval = QLA_FUNCTION_FAILED;
+ }
+ return (rval);
+}
+
+/*
+ * This routine frees all adapter allocated memory.
+ *
+ */
+static void
+qla2x00_free_sp_pool( scsi_qla_host_t *ha)
+{
+ if (ha->srb_mempool) {
+ mempool_destroy(ha->srb_mempool);
+ ha->srb_mempool = NULL;
+ }
+}
+
+/**************************************************************************
+* qla2x00_do_dpc
+* This kernel thread is a task that is schedule by the interrupt handler
+* to perform the background processing for interrupts.
+*
+* Notes:
+* This task always run in the context of a kernel thread. It
+* is kick-off by the driver's detect code and starts up
+* up one per adapter. It immediately goes to sleep and waits for
+* some fibre event. When either the interrupt handler or
+* the timer routine detects a event it will one of the task
+* bits then wake us up.
+**************************************************************************/
+static int
+qla2x00_do_dpc(void *data)
+{
+ DECLARE_MUTEX_LOCKED(sem);
+ scsi_qla_host_t *ha;
+ fc_port_t *fcport;
+ os_lun_t *q;
+ srb_t *sp;
+ uint8_t status;
+ unsigned long flags = 0;
+ struct list_head *list, *templist;
+ int dead_cnt, online_cnt;
+ int retry_cmds = 0;
+ uint16_t next_loopid;
+ int t;
+ os_tgt_t *tq;
+
+ ha = (scsi_qla_host_t *)data;
+
+ lock_kernel();
+
+ daemonize("%s_dpc", ha->host_str);
+ allow_signal(SIGHUP);
+
+ ha->dpc_wait = &sem;
+
+ set_user_nice(current, -20);
+
+ unlock_kernel();
+
+ complete(&ha->dpc_inited);
+
+ while (1) {
+ DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
+
+ if (down_interruptible(&sem))
+ break;
+
+ if (ha->dpc_should_die)
+ break;
+
+ DEBUG3(printk("qla2x00: DPC handler waking up\n"));
+
+ /* Initialization not yet finished. Don't do anything yet. */
+ if (!ha->flags.init_done || ha->dpc_active)
+ continue;
+
+ DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
+
+ ha->dpc_active = 1;
+
+ if (!list_empty(&ha->done_queue))
+ qla2x00_done(ha);
+
+ /* Process commands in retry queue */
+ if (test_and_clear_bit(PORT_RESTART_NEEDED, &ha->dpc_flags)) {
+ DEBUG(printk("scsi(%ld): DPC checking retry_q. "
+ "total=%d\n",
+ ha->host_no, ha->retry_q_cnt));
+
+ spin_lock_irqsave(&ha->list_lock, flags);
+ dead_cnt = online_cnt = 0;
+ list_for_each_safe(list, templist, &ha->retry_queue) {
+ sp = list_entry(list, srb_t, list);
+ q = sp->lun_queue;
+ DEBUG3(printk("scsi(%ld): pid=%ld sp=%p, "
+ "spflags=0x%x, q_flag= 0x%lx\n",
+ ha->host_no, sp->cmd->serial_number, sp,
+ sp->flags, q->q_flag));
+
+ if (q == NULL)
+ continue;
+ fcport = q->fclun->fcport;
+
+ if (atomic_read(&fcport->state) ==
+ FCS_DEVICE_DEAD ||
+ atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) {
+
+ __del_from_retry_queue(ha, sp);
+ sp->cmd->result = DID_NO_CONNECT << 16;
+ if (atomic_read(&fcport->ha->loop_state) ==
+ LOOP_DOWN)
+ sp->err_id = SRB_ERR_LOOP;
+ else
+ sp->err_id = SRB_ERR_PORT;
+ sp->cmd->host_scribble =
+ (unsigned char *) NULL;
+ __add_to_done_queue(ha, sp);
+ dead_cnt++;
+ } else if (atomic_read(&fcport->state) !=
+ FCS_DEVICE_LOST) {
+
+ __del_from_retry_queue(ha, sp);
+ sp->cmd->result = DID_BUS_BUSY << 16;
+ sp->cmd->host_scribble =
+ (unsigned char *) NULL;
+ __add_to_done_queue(ha, sp);
+ online_cnt++;
+ }
+ } /* list_for_each_safe() */
+ spin_unlock_irqrestore(&ha->list_lock, flags);
+
+ DEBUG(printk("scsi(%ld): done processing retry queue "
+ "- dead=%d, online=%d\n ",
+ ha->host_no, dead_cnt, online_cnt));
+ }
+
+ /* Process commands in scsi retry queue */
+ if (test_and_clear_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags)) {
+ /*
+ * Any requests we want to delay for some period is put
+ * in the scsi retry queue with a delay added. The
+ * timer will schedule a "scsi_restart_needed" every
+ * second as long as there are requests in the scsi
+ * queue.
+ */
+ DEBUG(printk("scsi(%ld): DPC checking scsi "
+ "retry_q.total=%d\n",
+ ha->host_no, ha->scsi_retry_q_cnt));
+
+ online_cnt = 0;
+ spin_lock_irqsave(&ha->list_lock, flags);
+ list_for_each_safe(list, templist,
+ &ha->scsi_retry_queue) {
+
+ sp = list_entry(list, srb_t, list);
+ q = sp->lun_queue;
+ tq = sp->tgt_queue;
+
+ DEBUG3(printk("scsi(%ld): scsi_retry_q: "
+ "pid=%ld sp=%p, spflags=0x%x, "
+ "q_flag= 0x%lx,q_state=%d\n",
+ ha->host_no, sp->cmd->serial_number,
+ sp, sp->flags, q->q_flag, q->q_state));
+
+ /* Was this lun suspended */
+ if (q->q_state != LUN_STATE_WAIT) {
+ online_cnt++;
+ __del_from_scsi_retry_queue(ha, sp);
+
+ if (test_bit(TQF_RETRY_CMDS,
+ &tq->flags)) {
+ qla2x00_extend_timeout(sp->cmd,
+ (sp->cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA);
+ __add_to_pending_queue(ha, sp);
+ retry_cmds++;
+ } else
+ __add_to_retry_queue(ha, sp);
+ }
+
+ /* Was this command suspended for N secs */
+ if (sp->delay != 0) {
+ sp->delay--;
+ if (sp->delay == 0) {
+ online_cnt++;
+ __del_from_scsi_retry_queue(
+ ha, sp);
+ __add_to_retry_queue(ha,sp);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&ha->list_lock, flags);
+
+ /* Clear all Target Unsuspended bits */
+ for (t = 0; t < ha->max_targets; t++) {
+ if ((tq = ha->otgt[t]) == NULL)
+ continue;
+
+ if (test_bit(TQF_RETRY_CMDS, &tq->flags))
+ clear_bit(TQF_RETRY_CMDS, &tq->flags);
+ }
+ if (retry_cmds)
+ qla2x00_next(ha);
+
+ DEBUG(if (online_cnt > 0))
+ DEBUG(printk("scsi(%ld): dpc() found scsi reqs to "
+ "restart= %d\n",
+ ha->host_no, online_cnt));
+ }
+
+ if (ha->flags.mbox_busy) {
+ if (!list_empty(&ha->done_queue))
+ qla2x00_done(ha);
+
+ ha->dpc_active = 0;
+ continue;
+ }
+
+ if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
+
+ DEBUG(printk("scsi(%ld): dpc: sched "
+ "qla2x00_abort_isp ha = %p\n",
+ ha->host_no, ha));
+ if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
+ &ha->dpc_flags))) {
+
+ if (qla2x00_abort_isp(ha)) {
+ /* failed. retry later */
+ set_bit(ISP_ABORT_NEEDED,
+ &ha->dpc_flags);
+ }
+ clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
+ }
+ DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
+ ha->host_no));
+ }
+
+ if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
+ (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
+
+ DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
+ ha->host_no));
+
+ qla2x00_rst_aen(ha);
+ clear_bit(RESET_ACTIVE, &ha->dpc_flags);
+ }
+
+ /* Retry each device up to login retry count */
+ if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
+ !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
+ atomic_read(&ha->loop_state) != LOOP_DOWN) {
+
+ DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
+ ha->host_no));
+
+ next_loopid = 0;
+ list_for_each_entry(fcport, &ha->fcports, list) {
+ if (fcport->port_type != FCT_TARGET)
+ continue;
+
+ /*
+ * If the port is not ONLINE then try to login
+ * to it if we haven't run out of retries.
+ */
+ if (atomic_read(&fcport->state) != FCS_ONLINE &&
+ fcport->login_retry) {
+
+ fcport->login_retry--;
+ if (fcport->flags & FCF_FABRIC_DEVICE) {
+ if (fcport->flags &
+ FCF_TAPE_PRESENT)
+ qla2x00_fabric_logout(
+ ha,
+ fcport->loop_id);
+ status = qla2x00_fabric_login(
+ ha, fcport, &next_loopid);
+ } else
+ status =
+ qla2x00_local_device_login(
+ ha, fcport->loop_id);
+
+ if (status == QLA_SUCCESS) {
+ fcport->old_loop_id = fcport->loop_id;
+
+ DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
+ ha->host_no, fcport->loop_id));
+
+ fcport->port_login_retry_count =
+ ha->port_down_retry_count * PORT_RETRY_TIME;
+ atomic_set(&fcport->state, FCS_ONLINE);
+ atomic_set(&fcport->port_down_timer,
+ ha->port_down_retry_count * PORT_RETRY_TIME);
+
+ fcport->login_retry = 0;
+ } else if (status == 1) {
+ set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
+ /* retry the login again */
+ DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
+ ha->host_no,
+ fcport->login_retry, fcport->loop_id));
+ } else {
+ fcport->login_retry = 0;
+ }
+ }
+ if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
+ break;
+ }
+ DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
+ ha->host_no));
+ }
+
+ if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
+ atomic_read(&ha->loop_state) != LOOP_DOWN) {
+
+ clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
+ DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
+ ha->host_no));
+
+ set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
+
+ DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
+ ha->host_no));
+ }
+
+ if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
+
+ DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
+ ha->host_no));
+
+ if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
+ &ha->dpc_flags))) {
+
+ qla2x00_loop_resync(ha);
+
+ clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
+ }
+
+ DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
+ ha->host_no));
+ }
+
+
+ if (test_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags)) {
+ DEBUG(printk("scsi(%ld): qla2x00_restart_queues()\n",
+ ha->host_no));
+
+ qla2x00_restart_queues(ha, 0);
+
+ DEBUG(printk("scsi(%ld): qla2x00_restart_queues - end\n",
+ ha->host_no));
+ }
+
+ if (test_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags)) {
+
+ DEBUG(printk("scsi(%ld): qla2x00_abort_queues()\n",
+ ha->host_no));
+
+ qla2x00_abort_queues(ha, 0);
+
+ DEBUG(printk("scsi(%ld): qla2x00_abort_queues - end\n",
+ ha->host_no));
+ }
+
+ if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
+
+ DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
+ ha->host_no));
+
+ qla2x00_rescan_fcports(ha);
+
+ DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
+ "end.\n",
+ ha->host_no));
+ }
+
+
+ if (!ha->interrupts_on)
+ qla2x00_enable_intrs(ha);
+
+ if (!list_empty(&ha->done_queue))
+ qla2x00_done(ha);
+
+ ha->dpc_active = 0;
+ } /* End of while(1) */
+
+ DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
+
+ /*
+ * 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);
+}
+
+/*
+ * qla2x00_abort_queues
+ * Abort all commands on queues on device
+ *
+ * Input:
+ * ha = adapter block pointer.
+ *
+ * Context:
+ * Interrupt context.
+ */
+void
+qla2x00_abort_queues(scsi_qla_host_t *ha, uint8_t doneqflg)
+{
+
+ srb_t *sp;
+ struct list_head *list, *temp;
+ unsigned long flags;
+
+ clear_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
+
+ /* Return all commands device queues. */
+ spin_lock_irqsave(&ha->list_lock,flags);
+ list_for_each_safe(list, temp, &ha->pending_queue) {
+ sp = list_entry(list, srb_t, list);
+
+ if (sp->flags & SRB_ABORTED)
+ continue;
+
+ /* Remove srb from LUN queue. */
+ __del_from_pending_queue(ha, sp);
+
+ /* Set ending status. */
+ sp->cmd->result = DID_BUS_BUSY << 16;
+
+ __add_to_done_queue(ha, sp);
+ }
+ spin_unlock_irqrestore(&ha->list_lock, flags);
+}
+
+/*
+* qla2x00_rst_aen
+* Processes asynchronous reset.
+*
+* Input:
+* ha = adapter block pointer.
+*/
+static void
+qla2x00_rst_aen(scsi_qla_host_t *ha)
+{
+ if (ha->flags.online && !ha->flags.reset_active &&
+ !atomic_read(&ha->loop_down_timer) &&
+ !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
+ do {
+ clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
+
+ /*
+ * Issue marker command only when we are going to start
+ * the I/O.
+ */
+ ha->marker_needed = 1;
+ } while (!atomic_read(&ha->loop_down_timer) &&
+ (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
+ }
+}
+
+
+/*
+ * This routine will allocate SP from the free queue
+ * input:
+ * scsi_qla_host_t *
+ * output:
+ * srb_t * or NULL
+ */
+static srb_t *
+qla2x00_get_new_sp(scsi_qla_host_t *ha)
+{
+ srb_t *sp;
+
+ sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
+ if (sp)
+ atomic_set(&sp->ref_count, 1);
+ return (sp);
+}
+
+/**************************************************************************
+* qla2x00_timer
+*
+* Description:
+* One second timer
+*
+* Context: Interrupt
+***************************************************************************/
+static void
+qla2x00_timer(scsi_qla_host_t *ha)
+{
+ int t,l;
+ unsigned long cpu_flags = 0;
+ fc_port_t *fcport;
+ os_lun_t *lq;
+ os_tgt_t *tq;
+ int start_dpc = 0;
+ int index;
+ srb_t *sp;
+
+ /*
+ * We try and restart any request in the retry queue every second.
+ */
+ if (!list_empty(&ha->retry_queue)) {
+ set_bit(PORT_RESTART_NEEDED, &ha->dpc_flags);
+ start_dpc++;
+ }
+
+ /*
+ * We try and restart any request in the scsi_retry queue every second.
+ */
+ if (!list_empty(&ha->scsi_retry_queue)) {
+ set_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags);
+ start_dpc++;
+ }
+
+ /*
+ * Ports - Port down timer.
+ *
+ * Whenever, a port is in the LOST state we start decrementing its port
+ * down timer every second until it reaches zero. Once it reaches zero
+ * the port it marked DEAD.
+ */
+ t = 0;
+ list_for_each_entry(fcport, &ha->fcports, list) {
+ if (fcport->port_type != FCT_TARGET)
+ continue;
+
+ if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
+
+ if (atomic_read(&fcport->port_down_timer) == 0)
+ continue;
+
+ if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
+ atomic_set(&fcport->state, FCS_DEVICE_DEAD);
+
+ DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
+ "%d remainning\n",
+ ha->host_no,
+ t, atomic_read(&fcport->port_down_timer)));
+ }
+ t++;
+ } /* End of for fcport */
+
+ /*
+ * LUNS - lun suspend timer.
+ *
+ * Whenever, a lun is suspended the timer starts decrementing its
+ * suspend timer every second until it reaches zero. Once it reaches
+ * zero the lun retry count is decremented.
+ */
+
+ /*
+ * FIXME(dg) - Need to convert this linear search of luns into a search
+ * of a list of suspended luns.
+ */
+ for (t = 0; t < ha->max_targets; t++) {
+ if ((tq = ha->otgt[t]) == NULL)
+ continue;
+
+ for (l = 0; l < ha->max_luns; l++) {
+ if ((lq = (os_lun_t *) tq->olun[l]) == NULL)
+ continue;
+
+ spin_lock_irqsave(&lq->q_lock, cpu_flags);
+ if (lq->q_state == LUN_STATE_WAIT &&
+ atomic_read(&lq->q_timer) != 0) {
+
+ if (atomic_dec_and_test(&lq->q_timer) != 0) {
+ /*
+ * A delay should immediately
+ * transition to a READY state
+ */
+ if (test_and_clear_bit(LUN_EXEC_DELAYED,
+ &lq->q_flag)) {
+ lq->q_state = LUN_STATE_READY;
+ }
+ else {
+ lq->q_count++;
+ if (lq->q_count == lq->q_max)
+ lq->q_state =
+ LUN_STATE_TIMEOUT;
+ else
+ lq->q_state =
+ LUN_STATE_RUN;
+ }
+ }
+ DEBUG3(printk("scsi(%ld): lun%d - timer %d, "
+ "count=%d, max=%d, state=%d\n",
+ ha->host_no,
+ l,
+ atomic_read(&lq->q_timer),
+ lq->q_count, lq->q_max, lq->q_state));
+ }
+ spin_unlock_irqrestore(&lq->q_lock, cpu_flags);
+ } /* End of for luns */
+ } /* End of for targets */
+
+ /* Loop down handler. */
+ if (atomic_read(&ha->loop_down_timer) > 0 &&
+ !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
+
+ if (atomic_read(&ha->loop_down_timer) ==
+ ha->loop_down_abort_time) {
+
+ DEBUG(printk("scsi(%ld): Loop Down - aborting the "
+ "queues before time expire\n",
+ ha->host_no));
+
+ if (!IS_QLA2100(ha) && ha->link_down_timeout)
+ atomic_set(&ha->loop_state, LOOP_DEAD);
+
+ /* Schedule an ISP abort to return any tape commands. */
+ spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
+ for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
+ index++) {
+ sp = ha->outstanding_cmds[index];
+ if (!sp)
+ continue;
+ if (!(sp->fclun->fcport->flags &
+ FCF_TAPE_PRESENT))
+ continue;
+
+ set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
+ break;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
+
+ set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
+ start_dpc++;
+ }
+
+ /* if the loop has been down for 4 minutes, reinit adapter */
+ if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
+ DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
+ "restarting queues.\n",
+ ha->host_no));
+
+ set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
+ start_dpc++;
+
+ if (!(ha->device_flags & DFLG_NO_CABLE)) {
+ DEBUG(printk("scsi(%ld): Loop down - "
+ "aborting ISP.\n",
+ ha->host_no));
+ qla_printk(KERN_WARNING, ha,
+ "Loop down - aborting ISP.\n");
+
+ set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
+ }
+ }
+ DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
+ ha->host_no,
+ atomic_read(&ha->loop_down_timer)));
+ }
+
+ /*
+ * Done Q Handler -- dgFIXME This handler will kick off doneq if we
+ * haven't process it in 2 seconds.
+ */
+ if (!list_empty(&ha->done_queue))
+ qla2x00_done(ha);
+
+
+ /* Schedule the DPC routine if needed */
+ if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
+ test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
+ start_dpc ||
+ test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
+ test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
+ ha->dpc_wait && !ha->dpc_active) {
+
+ up(ha->dpc_wait);
+ }
+
+ qla2x00_restart_timer(ha, WATCH_INTERVAL);
+}
+
+/*
+ * qla2x00_extend_timeout
+ * This routine will extend the timeout to the specified value.
+ *
+ * Input:
+ * cmd = SCSI command structure
+ *
+ * Returns:
+ * None.
+ */
+void
+qla2x00_extend_timeout(struct scsi_cmnd *cmd, int timeout)
+{
+ srb_t *sp = (srb_t *) CMD_SP(cmd);
+ u_long our_jiffies = (timeout * HZ) + jiffies;
+
+ sp->ext_history= 0;
+ sp->e_start = jiffies;
+ if (cmd->eh_timeout.function) {
+ mod_timer(&cmd->eh_timeout,our_jiffies);
+ sp->ext_history |= 1;
+ }
+ if (sp->timer.function != NULL) {
+ /*
+ * Our internal timer should timeout before the midlayer has a
+ * chance begin the abort process
+ */
+ mod_timer(&sp->timer,our_jiffies - (QLA_CMD_TIMER_DELTA * HZ));
+
+ sp->ext_history |= 2;
+ }
+}
+
+/**************************************************************************
+* qla2x00_cmd_timeout
+*
+* Description:
+* Handles the command if it times out in any state.
+*
+* Input:
+* sp - pointer to validate
+*
+* Returns:
+* None.
+* Note:Need to add the support for if( sp->state == SRB_FAILOVER_STATE).
+**************************************************************************/
+void
+qla2x00_cmd_timeout(srb_t *sp)
+{
+ int t, l;
+ int processed;
+ scsi_qla_host_t *vis_ha, *dest_ha;
+ struct scsi_cmnd *cmd;
+ unsigned long flags, cpu_flags;
+ fc_port_t *fcport;
+
+ cmd = sp->cmd;
+ vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
+
+ DEBUG3(printk("cmd_timeout: Entering sp->state = %x\n", sp->state));
+
+ t = cmd->device->id;
+ l = cmd->device->lun;
+ fcport = sp->fclun->fcport;
+ dest_ha = sp->ha;
+
+ /*
+ * If IO is found either in retry Queue
+ * OR in Lun Queue
+ * Return this IO back to host
+ */
+ spin_lock_irqsave(&vis_ha->list_lock, flags);
+ processed = 0;
+ if (sp->state == SRB_PENDING_STATE) {
+ __del_from_pending_queue(vis_ha, sp);
+ DEBUG2(printk("scsi(%ld): Found in Pending queue pid %ld, "
+ "State = %x., fcport state=%d sjiffs=%lx njiffs=%lx\n",
+ vis_ha->host_no, cmd->serial_number, sp->state,
+ atomic_read(&fcport->state), sp->r_start, jiffies));
+
+ /*
+ * If FC_DEVICE is marked as dead return the cmd with
+ * DID_NO_CONNECT status. Otherwise set the host_byte to
+ * DID_BUS_BUSY to let the OS retry this cmd.
+ */
+ if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
+ atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) {
+ cmd->result = DID_NO_CONNECT << 16;
+ if (atomic_read(&fcport->ha->loop_state) == LOOP_DOWN)
+ sp->err_id = SRB_ERR_LOOP;
+ else
+ sp->err_id = SRB_ERR_PORT;
+ } else {
+ cmd->result = DID_BUS_BUSY << 16;
+ }
+ __add_to_done_queue(vis_ha, sp);
+ processed++;
+ }
+ spin_unlock_irqrestore(&vis_ha->list_lock, flags);
+
+ if (processed) {
+ qla2x00_done(vis_ha);
+ return;
+ }
+
+ spin_lock_irqsave(&dest_ha->list_lock, flags);
+ if ((sp->state == SRB_RETRY_STATE) ||
+ (sp->state == SRB_SCSI_RETRY_STATE)) {
+
+ DEBUG2(printk("scsi(%ld): Found in (Scsi) Retry queue or "
+ "failover Q pid %ld, State = %x., fcport state=%d "
+ "jiffies=%lx retried=%d\n",
+ dest_ha->host_no, cmd->serial_number, sp->state,
+ atomic_read(&fcport->state), jiffies, cmd->retries));
+
+ if ((sp->state == SRB_RETRY_STATE)) {
+ __del_from_retry_queue(dest_ha, sp);
+ } else if ((sp->state == SRB_SCSI_RETRY_STATE)) {
+ __del_from_scsi_retry_queue(dest_ha, sp);
+ }
+
+ /*
+ * If FC_DEVICE is marked as dead return the cmd with
+ * DID_NO_CONNECT status. Otherwise set the host_byte to
+ * DID_BUS_BUSY to let the OS retry this cmd.
+ */
+ if ((atomic_read(&fcport->state) == FCS_DEVICE_DEAD) ||
+ atomic_read(&dest_ha->loop_state) == LOOP_DEAD) {
+ qla2x00_extend_timeout(cmd, EXTEND_CMD_TIMEOUT);
+ cmd->result = DID_NO_CONNECT << 16;
+ if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN)
+ sp->err_id = SRB_ERR_LOOP;
+ else
+ sp->err_id = SRB_ERR_PORT;
+ } else {
+ cmd->result = DID_BUS_BUSY << 16;
+ }
+
+ __add_to_done_queue(dest_ha, sp);
+ processed++;
+ }
+ spin_unlock_irqrestore(&dest_ha->list_lock, flags);
+
+ if (processed) {
+ qla2x00_done(dest_ha);
+ return;
+ }
+
+ spin_lock_irqsave(&dest_ha->list_lock, cpu_flags);
+ if (sp->state == SRB_DONE_STATE) {
+ /* IO in done_q -- leave it */
+ DEBUG(printk("scsi(%ld): Found in Done queue pid %ld sp=%p.\n",
+ dest_ha->host_no, cmd->serial_number, sp));
+ } else if (sp->state == SRB_SUSPENDED_STATE) {
+ DEBUG(printk("scsi(%ld): Found SP %p in suspended state "
+ "- pid %ld:\n",
+ dest_ha->host_no, sp, cmd->serial_number));
+ DEBUG(qla2x00_dump_buffer((uint8_t *)sp, sizeof(srb_t));)
+ } else if (sp->state == SRB_ACTIVE_STATE) {
+ /*
+ * IO is with ISP find the command in our active list.
+ */
+ spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags);
+ spin_lock_irqsave(&dest_ha->hardware_lock, flags);
+ if (sp == dest_ha->outstanding_cmds[
+ (unsigned long)sp->cmd->host_scribble]) {
+
+ DEBUG(printk("cmd_timeout: Found in ISP \n"));
+
+ if (sp->flags & SRB_TAPE) {
+ /*
+ * We cannot allow the midlayer error handler
+ * to wakeup and begin the abort process.
+ * Extend the timer so that the firmware can
+ * properly return the IOCB.
+ */
+ DEBUG(printk("cmd_timeout: Extending timeout "
+ "of FCP2 tape command!\n"));
+ qla2x00_extend_timeout(sp->cmd,
+ EXTEND_CMD_TIMEOUT);
+ }
+ sp->state = SRB_ACTIVE_TIMEOUT_STATE;
+ spin_unlock_irqrestore(&dest_ha->hardware_lock, flags);
+ } else {
+ spin_unlock_irqrestore(&dest_ha->hardware_lock, flags);
+ printk(KERN_INFO
+ "qla_cmd_timeout: State indicates it is with "
+ "ISP, But not in active array\n");
+ }
+ spin_lock_irqsave(&dest_ha->list_lock, cpu_flags);
+ } else if (sp->state == SRB_ACTIVE_TIMEOUT_STATE) {
+ DEBUG(printk("qla2100%ld: Found in Active timeout state"
+ "pid %ld, State = %x., \n",
+ dest_ha->host_no,
+ sp->cmd->serial_number, sp->state);)
+ } else {
+ /* EMPTY */
+ DEBUG2(printk("cmd_timeout%ld: LOST command state = "
+ "0x%x, sp=%p\n",
+ vis_ha->host_no, sp->state,sp);)
+
+ qla_printk(KERN_INFO, vis_ha,
+ "cmd_timeout: LOST command state = 0x%x\n", sp->state);
+ }
+ spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags);
+
+ DEBUG3(printk("cmd_timeout: Leaving\n");)
+}
+
+/**************************************************************************
+* qla2x00_done
+* Process completed commands.
+*
+* Input:
+* old_ha = adapter block pointer.
+*
+**************************************************************************/
+void
+qla2x00_done(scsi_qla_host_t *old_ha)
+{
+ os_lun_t *lq;
+ struct scsi_cmnd *cmd;
+ unsigned long flags = 0;
+ scsi_qla_host_t *ha;
+ scsi_qla_host_t *vis_ha;
+ int send_marker_once = 0;
+ srb_t *sp, *sptemp;
+ LIST_HEAD(local_sp_list);
+
+ /*
+ * Get into local queue such that we do not wind up calling done queue
+ * tasklet for the same IOs from DPC or any other place.
+ */
+ spin_lock_irqsave(&old_ha->list_lock, flags);
+ list_splice_init(&old_ha->done_queue, &local_sp_list);
+ spin_unlock_irqrestore(&old_ha->list_lock, flags);
+
+ /*
+ * All done commands are in the local queue, now do the call back.
+ */
+ list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) {
+ old_ha->done_q_cnt--;
+ sp->state = SRB_NO_QUEUE_STATE;
+
+ /* remove command from local list */
+ list_del_init(&sp->list);
+
+ cmd = sp->cmd;
+ if (cmd == NULL)
+ continue;
+
+ vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
+ lq = sp->lun_queue;
+ ha = sp->ha;
+
+ if (sp->flags & SRB_DMA_VALID) {
+ sp->flags &= ~SRB_DMA_VALID;
+
+ /* Release memory used for this I/O */
+ if (cmd->use_sg) {
+ pci_unmap_sg(ha->pdev, cmd->request_buffer,
+ cmd->use_sg, cmd->sc_data_direction);
+ } else if (cmd->request_bufflen) {
+ pci_unmap_page(ha->pdev, sp->dma_handle,
+ cmd->request_bufflen,
+ cmd->sc_data_direction);
+ }
+ }
+
+
+ switch (host_byte(cmd->result)) {
+ case DID_OK:
+ case DID_ERROR:
+ break;
+
+ case DID_RESET:
+ /*
+ * Set marker needed, so we don't have to
+ * send multiple markers
+ */
+ if (!send_marker_once) {
+ ha->marker_needed = 1;
+ send_marker_once++;
+ }
+
+ /*
+ * WORKAROUND
+ *
+ * A backdoor device-reset requires different
+ * error handling. This code differentiates
+ * between normal error handling and the
+ * backdoor method.
+ *
+ */
+ if (ha->host->eh_active != EH_ACTIVE)
+ cmd->result = DID_BUS_BUSY << 16;
+ break;
+
+
+ case DID_ABORT:
+ sp->flags &= ~SRB_ABORT_PENDING;
+ sp->flags |= SRB_ABORTED;
+
+ if (sp->flags & SRB_TIMEOUT)
+ cmd->result = DID_TIME_OUT << 16;
+
+ break;
+
+ default:
+ DEBUG2(printk("scsi(%ld:%d:%d) %s: did_error "
+ "= %d, comp-scsi= 0x%x-0x%x pid=%ld.\n",
+ vis_ha->host_no,
+ cmd->device->id, cmd->device->lun,
+ __func__,
+ host_byte(cmd->result),
+ CMD_COMPL_STATUS(cmd),
+ CMD_SCSI_STATUS(cmd), cmd->serial_number));
+ break;
+ }
+
+ /*
+ * Call the mid-level driver interrupt handler -- via sp_put()
+ */
+ sp_put(ha, sp);
+ } /* end of while */
+}
+
+/*
+ * qla2x00_process_response_queue_in_zio_mode
+ * Process response queue completion as fast as possible
+ * to achieve Zero Interrupt Opertions-ZIO
+ *
+ * Input:
+ * ha = adapter block pointer.
+ *
+ * Context:
+ * Kernel context.
+ */
+static inline void
+qla2x00_process_response_queue_in_zio_mode(scsi_qla_host_t *ha)
+{
+ unsigned long flags;
+
+ /* Check for unprocessed commands in response queue. */
+ if (!ha->flags.process_response_queue)
+ return;
+ if (!ha->flags.online)
+ return;
+ if (ha->response_ring_ptr->signature == RESPONSE_PROCESSED)
+ return;
+
+ spin_lock_irqsave(&ha->hardware_lock,flags);
+ qla2x00_process_response_queue(ha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+/*
+ * qla2x00_next
+ * Retrieve and process next job in the LUN queue.
+ *
+ * Input:
+ * tq = SCSI target queue pointer.
+ * lq = SCSI LUN queue pointer.
+ * TGT_LOCK must be already obtained.
+ *
+ * Output:
+ * Releases TGT_LOCK upon exit.
+ *
+ * Context:
+ * Kernel/Interrupt context.
+ *
+ * Note: This routine will always try to start I/O from visible HBA.
+ */
+void
+qla2x00_next(scsi_qla_host_t *vis_ha)
+{
+ int rval;
+ unsigned long flags;
+ scsi_qla_host_t *dest_ha;
+ fc_port_t *fcport;
+ srb_t *sp, *sptemp;
+ LIST_HEAD(local_sp_list);
+
+ dest_ha = NULL;
+
+ spin_lock_irqsave(&vis_ha->list_lock, flags);
+ list_splice_init(&vis_ha->pending_queue, &local_sp_list);
+ vis_ha->qthreads = 0;
+ spin_unlock_irqrestore(&vis_ha->list_lock, flags);
+
+ list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) {
+ list_del_init(&sp->list);
+ sp->state = SRB_NO_QUEUE_STATE;
+
+ fcport = sp->fclun->fcport;
+ dest_ha = fcport->ha;
+
+ /* If device is dead then send request back to OS */
+ if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) {
+ sp->cmd->result = DID_NO_CONNECT << 16;
+ if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN)
+ sp->err_id = SRB_ERR_LOOP;
+ else
+ sp->err_id = SRB_ERR_PORT;
+
+ DEBUG3(printk("scsi(%ld): loop/port is down - pid=%ld, "
+ "sp=%p err_id=%d loopid=0x%x queued to dest HBA "
+ "scsi%ld.\n", dest_ha->host_no,
+ sp->cmd->serial_number, sp, sp->err_id,
+ fcport->loop_id, dest_ha->host_no));
+ /*
+ * Initiate a failover - done routine will initiate.
+ */
+ add_to_done_queue(vis_ha, sp);
+
+ continue;
+ }
+
+ /*
+ * SCSI Kluge: Whenever, we need to wait for an event such as
+ * loop down (i.e. loop_down_timer ) or port down (i.e. LUN
+ * request qeueue is suspended) then we will recycle new
+ * commands back to the SCSI layer. We do this because this is
+ * normally a temporary condition and we don't want the
+ * mid-level scsi.c driver to get upset and start aborting
+ * commands. The timeout value is extracted from the command
+ * minus 1-second and put on a retry queue (watchdog). Once the
+ * command timeout it is returned to the mid-level with a BUSY
+ * status, so the mid-level will retry it. This process
+ * continues until the LOOP DOWN time expires or the condition
+ * goes away.
+ */
+ if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
+ (atomic_read(&fcport->state) != FCS_ONLINE ||
+ test_bit(ABORT_ISP_ACTIVE, &dest_ha->dpc_flags) ||
+ atomic_read(&dest_ha->loop_state) != LOOP_READY)) {
+
+ DEBUG3(printk("scsi(%ld): pid=%ld port=0x%x state=%d "
+ "loop state=%d, loop counter=0x%x "
+ "dpc_flags=0x%lx\n", sp->cmd->serial_number,
+ dest_ha->host_no, fcport->loop_id,
+ atomic_read(&fcport->state),
+ atomic_read(&dest_ha->loop_state),
+ atomic_read(&dest_ha->loop_down_timer),
+ dest_ha->dpc_flags));
+
+ qla2x00_extend_timeout(sp->cmd, EXTEND_CMD_TIMEOUT);
+ add_to_retry_queue(vis_ha, sp);
+
+ continue;
+ }
+
+ /*
+ * If this request's lun is suspended then put the request on
+ * the scsi_retry queue.
+ */
+ if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
+ sp->lun_queue->q_state == LUN_STATE_WAIT) {
+ DEBUG3(printk("scsi(%ld): lun wait state - pid=%ld, "
+ "opcode=%d, allowed=%d, retries=%d\n",
+ dest_ha->host_no,
+ sp->cmd->serial_number,
+ sp->cmd->cmnd[0],
+ sp->cmd->allowed,
+ sp->cmd->retries));
+
+ add_to_scsi_retry_queue(vis_ha, sp);
+
+ continue;
+ }
+
+ sp->lun_queue->io_cnt++;
+
+ rval = qla2x00_start_scsi(sp);
+ if (rval != QLA_SUCCESS) {
+ /* Place request back on top of device queue */
+ /* add to the top of queue */
+ add_to_pending_queue_head(vis_ha, sp);
+
+ sp->lun_queue->io_cnt--;
+ }
+ }
+
+ if (!IS_QLA2100(vis_ha) && !IS_QLA2200(vis_ha)) {
+ /* Process response_queue if ZIO support is enabled*/
+ qla2x00_process_response_queue_in_zio_mode(vis_ha);
+
+ }
+}
+
+/* XXX(hch): crude hack to emulate a down_timeout() */
+int
+qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
+{
+ const unsigned int step = HZ/10;
+
+ do {
+ if (!down_trylock(sema))
+ return 0;
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (schedule_timeout(step))
+ break;
+ } while ((timeout -= step) > 0);
+
+ return -ETIMEDOUT;
+}
+
+static void
+qla2xxx_get_port_id(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ scsi_qla_host_t *ha = to_qla_host(shost);
+ struct fc_port *fc;
+
+ list_for_each_entry(fc, &ha->fcports, list) {
+ if (fc->os_target_id == starget->id) {
+ fc_starget_port_id(starget) = fc->d_id.b.domain << 16 |
+ fc->d_id.b.area << 8 |
+ fc->d_id.b.al_pa;
+ return;
+ }
+ }
+ fc_starget_port_id(starget) = -1;
+}
+
+static void
+qla2xxx_get_port_name(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ scsi_qla_host_t *ha = to_qla_host(shost);
+ struct fc_port *fc;
+
+ list_for_each_entry(fc, &ha->fcports, list) {
+ if (fc->os_target_id == starget->id) {
+ fc_starget_port_name(starget) =
+ __be64_to_cpu(*(uint64_t *)fc->port_name);
+ return;
+ }
+ }
+ fc_starget_port_name(starget) = -1;
+}
+
+static void
+qla2xxx_get_node_name(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ scsi_qla_host_t *ha = to_qla_host(shost);
+ struct fc_port *fc;
+
+ list_for_each_entry(fc, &ha->fcports, list) {
+ if (fc->os_target_id == starget->id) {
+ fc_starget_node_name(starget) =
+ __be64_to_cpu(*(uint64_t *)fc->node_name);
+ return;
+ }
+ }
+ fc_starget_node_name(starget) = -1;
+}
+
+static struct fc_function_template qla2xxx_transport_functions = {
+ .get_starget_port_id = qla2xxx_get_port_id,
+ .show_starget_port_id = 1,
+ .get_starget_port_name = qla2xxx_get_port_name,
+ .show_starget_port_name = 1,
+ .get_starget_node_name = qla2xxx_get_node_name,
+ .show_starget_node_name = 1,
+};
+
+/**
+ * qla2x00_module_init - Module initialization.
+ **/
+static int __init
+qla2x00_module_init(void)
+{
+ /* Allocate cache for SRBs. */
+ sprintf(srb_cachep_name, "qla2xxx_srbs");
+ srb_cachep = kmem_cache_create(srb_cachep_name, sizeof(srb_t), 0,
+ SLAB_HWCACHE_ALIGN, NULL, NULL);
+ if (srb_cachep == NULL) {
+ printk(KERN_ERR
+ "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
+ return -ENOMEM;
+ }
+
+ /* Derive version string. */
+ strcpy(qla2x00_version_str, QLA2XXX_VERSION);
+#if DEBUG_QLA2100
+ strcat(qla2x00_version_str, "-debug");
+#endif
+
+ qla2xxx_transport_template = fc_attach_transport(&qla2xxx_transport_functions);
+ if (!qla2xxx_transport_template)
+ return -ENODEV;
+
+ printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
+ return 0;
+}
+
+/**
+ * qla2x00_module_exit - Module cleanup.
+ **/
+static void __exit
+qla2x00_module_exit(void)
+{
+ /* Free SRBs cache. */
+ if (srb_cachep != NULL) {
+ if (kmem_cache_destroy(srb_cachep) != 0) {
+ printk(KERN_ERR
+ "qla2xxx: Unable to free SRB cache...Memory pools "
+ "still active?\n");
+ }
+ srb_cachep = NULL;
+ }
+
+ fc_release_transport(qla2xxx_transport_template);
+}
+
+module_init(qla2x00_module_init);
+module_exit(qla2x00_module_exit);
+
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLA2XXX_VERSION);
