ClabureDB: Classified Bug-Reports Database

   /*
    * QLogic Fibre Channel HBA Driver
    * Copyright (c)  2003-2008 QLogic Corporation
    *
    * See LICENSE.qla2xxx for copyright and licensing details.
    */
   #include "qla_def.h"
   
   #include <linux/moduleparam.h>
  #include <linux/vmalloc.h>
  #include <linux/delay.h>
  #include <linux/kthread.h>
  #include <linux/mutex.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
   */
  static struct kmem_cache *srb_cachep;
  
  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 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 ql2xloginretrycount = 0;
  module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  MODULE_PARM_DESC(ql2xloginretrycount,
                  "Specify an alternate value for the NVRAM login retry count.");
  
  int ql2xallocfwdump = 1;
  module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  MODULE_PARM_DESC(ql2xallocfwdump,
                  "Option to enable allocation of memory for a firmware dump "
                  "during HBA initialization.  Memory allocation requirements "
                  "vary by ISP type.  Default is 1 - allocate memory.");
  
  int ql2xextended_error_logging;
  module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
  MODULE_PARM_DESC(ql2xextended_error_logging,
                  "Option to enable extended error logging, "
                  "Default is 0 - no logging. 1 - log errors.");
  
  static void qla2x00_free_device(scsi_qla_host_t *);
  
  static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  
  int ql2xfdmienable=1;
  module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  MODULE_PARM_DESC(ql2xfdmienable,
                  "Enables FDMI registratons "
                  "Default is 0 - no FDMI. 1 - perfom FDMI.");
  
  #define MAX_Q_DEPTH    32
  static int ql2xmaxqdepth = MAX_Q_DEPTH;
  module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  MODULE_PARM_DESC(ql2xmaxqdepth,
                  "Maximum queue depth to report for target devices.");
  
  int ql2xqfullrampup = 120;
  module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  MODULE_PARM_DESC(ql2xqfullrampup,
                  "Number of seconds to wait to begin to ramp-up the queue "
                  "depth for a device after a queue-full condition has been "
                  "detected.  Default is 120 seconds.");
  
  int ql2xiidmaenable=1;
  module_param(ql2xiidmaenable, int, S_IRUGO|S_IRUSR);
  MODULE_PARM_DESC(ql2xiidmaenable,
                  "Enables iIDMA settings "
                  "Default is 1 - perform iIDMA. 0 - no iIDMA.");
  
  
  /*
   * SCSI host template entry points
   */
  static int qla2xxx_slave_configure(struct scsi_device * device);
 static int qla2xxx_slave_alloc(struct scsi_device *);
 static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
 static void qla2xxx_scan_start(struct Scsi_Host *);
 static void qla2xxx_slave_destroy(struct scsi_device *);
 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
                 void (*fn)(struct scsi_cmnd *));
 static int qla24xx_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_target_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_change_queue_depth(struct scsi_device *, int);
 static int qla2x00_change_queue_type(struct scsi_device *, int);
 
 static struct scsi_host_template qla2x00_driver_template = {
         .module                        = THIS_MODULE,
         .name                        = QLA2XXX_DRIVER_NAME,
         .queuecommand                = qla2x00_queuecommand,
 
         .eh_abort_handler        = qla2xxx_eh_abort,
         .eh_device_reset_handler = qla2xxx_eh_device_reset,
         .eh_target_reset_handler = qla2xxx_eh_target_reset,
         .eh_bus_reset_handler        = qla2xxx_eh_bus_reset,
         .eh_host_reset_handler        = qla2xxx_eh_host_reset,
 
         .slave_configure        = qla2xxx_slave_configure,
 
         .slave_alloc                = qla2xxx_slave_alloc,
         .slave_destroy                = qla2xxx_slave_destroy,
         .scan_finished                = qla2xxx_scan_finished,
         .scan_start                = qla2xxx_scan_start,
         .change_queue_depth        = qla2x00_change_queue_depth,
         .change_queue_type        = qla2x00_change_queue_type,
         .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,
         .shost_attrs                = qla2x00_host_attrs,
 };
 
 struct scsi_host_template qla24xx_driver_template = {
         .module                        = THIS_MODULE,
         .name                        = QLA2XXX_DRIVER_NAME,
         .queuecommand                = qla24xx_queuecommand,
 
         .eh_abort_handler        = qla2xxx_eh_abort,
         .eh_device_reset_handler = qla2xxx_eh_device_reset,
         .eh_target_reset_handler = qla2xxx_eh_target_reset,
         .eh_bus_reset_handler        = qla2xxx_eh_bus_reset,
         .eh_host_reset_handler        = qla2xxx_eh_host_reset,
 
         .slave_configure        = qla2xxx_slave_configure,
 
         .slave_alloc                = qla2xxx_slave_alloc,
         .slave_destroy                = qla2xxx_slave_destroy,
         .scan_finished                = qla2xxx_scan_finished,
         .scan_start                = qla2xxx_scan_start,
         .change_queue_depth        = qla2x00_change_queue_depth,
         .change_queue_type        = qla2x00_change_queue_type,
         .this_id                = -1,
         .cmd_per_lun                = 3,
         .use_clustering                = ENABLE_CLUSTERING,
         .sg_tablesize                = SG_ALL,
 
         .max_sectors                = 0xFFFF,
         .shost_attrs                = qla2x00_host_attrs,
 };
 
 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
 
 /* TODO Convert to inlines
  *
  * Timer routines
  */
 
 __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;
 }
 
 static int qla2x00_do_dpc(void *data);
 
 static void qla2x00_rst_aen(scsi_qla_host_t *);
 
 static int qla2x00_mem_alloc(scsi_qla_host_t *);
 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 
 /* -------------------------------------------------------------------------- */
 
 static char *
 qla2x00_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);
 }
 
 static char *
 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 {
         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
         uint32_t pci_bus;
         int pcie_reg;
 
         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
         if (pcie_reg) {
                 char lwstr[6];
                 uint16_t pcie_lstat, lspeed, lwidth;
 
                 pcie_reg += 0x12;
                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
                 lwidth = (pcie_lstat &
                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 
                 strcpy(str, "PCIe (");
                 if (lspeed == 1)
                         strcat(str, "2.5GT/s ");
                 else if (lspeed == 2)
                         strcat(str, "5.0GT/s ");
                 else
                         strcat(str, "<unknown> ");
                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
                 strcat(str, lwstr);
 
                 return str;
         }
 
         strcpy(str, "PCI");
         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
         if (pci_bus == 0 || pci_bus == 8) {
                 strcat(str, " (");
                 strcat(str, pci_bus_modes[pci_bus >> 3]);
         } else {
                 strcat(str, "-X ");
                 if (pci_bus & BIT_2)
                         strcat(str, "Mode 2");
                 else
                         strcat(str, "Mode 1");
                 strcat(str, " (");
                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
         }
         strcat(str, " MHz)");
 
         return str;
 }
 
 static char *
 qla2x00_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);
 }
 
 static char *
 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 {
         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
             ha->fw_minor_version,
             ha->fw_subminor_version);
 
         if (ha->fw_attributes & BIT_0)
                 strcat(str, "[Class 2] ");
         if (ha->fw_attributes & BIT_1)
                 strcat(str, "[IP] ");
         if (ha->fw_attributes & BIT_2)
                 strcat(str, "[Multi-ID] ");
         if (ha->fw_attributes & BIT_3)
                 strcat(str, "[SB-2] ");
         if (ha->fw_attributes & BIT_4)
                 strcat(str, "[T10 CRC] ");
         if (ha->fw_attributes & BIT_5)
                 strcat(str, "[VI] ");
         if (ha->fw_attributes & BIT_10)
                 strcat(str, "[84XX] ");
         if (ha->fw_attributes & BIT_13)
                 strcat(str, "[Experimental]");
         return str;
 }
 
 static inline srb_t *
 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
         srb_t *sp;
 
         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
         if (!sp)
                 return sp;
 
         sp->ha = ha;
         sp->fcport = fcport;
         sp->cmd = cmd;
         sp->flags = 0;
         CMD_SP(cmd) = (void *)sp;
         cmd->scsi_done = done;
 
         return sp;
 }
 
 static int
 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
         srb_t *sp;
         int rval;
 
         if (unlikely(pci_channel_offline(ha->pdev))) {
                 cmd->result = DID_REQUEUE << 16;
                 goto qc_fail_command;
         }
 
         rval = fc_remote_port_chkready(rport);
         if (rval) {
                 cmd->result = rval;
                 goto qc_fail_command;
         }
 
         /* Close window on fcport/rport state-transitioning. */
         if (fcport->drport)
                 goto qc_target_busy;
 
         if (atomic_read(&fcport->state) != FCS_ONLINE) {
                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
                         cmd->result = DID_NO_CONNECT << 16;
                         goto qc_fail_command;
                 }
                 goto qc_target_busy;
         }
 
         spin_unlock_irq(ha->host->host_lock);
 
         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
         if (!sp)
                 goto qc_host_busy_lock;
 
         rval = qla2x00_start_scsi(sp);
         if (rval != QLA_SUCCESS)
                 goto qc_host_busy_free_sp;
 
         spin_lock_irq(ha->host->host_lock);
 
         return 0;
 
 qc_host_busy_free_sp:
         qla2x00_sp_free_dma(ha, sp);
         mempool_free(sp, ha->srb_mempool);
 
 qc_host_busy_lock:
         spin_lock_irq(ha->host->host_lock);
         return SCSI_MLQUEUE_HOST_BUSY;
 
 qc_target_busy:
         return SCSI_MLQUEUE_TARGET_BUSY;
 
 qc_fail_command:
         done(cmd);
 
         return 0;
 }
 
 
 static int
 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
         srb_t *sp;
         int rval;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         if (unlikely(pci_channel_offline(pha->pdev))) {
                 cmd->result = DID_REQUEUE << 16;
                 goto qc24_fail_command;
         }
 
         rval = fc_remote_port_chkready(rport);
         if (rval) {
                 cmd->result = rval;
                 goto qc24_fail_command;
         }
 
         /* Close window on fcport/rport state-transitioning. */
         if (fcport->drport)
                 goto qc24_target_busy;
 
         if (atomic_read(&fcport->state) != FCS_ONLINE) {
                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
                     atomic_read(&pha->loop_state) == LOOP_DEAD) {
                         cmd->result = DID_NO_CONNECT << 16;
                         goto qc24_fail_command;
                 }
                 goto qc24_target_busy;
         }
 
         spin_unlock_irq(ha->host->host_lock);
 
         sp = qla2x00_get_new_sp(pha, fcport, cmd, done);
         if (!sp)
                 goto qc24_host_busy_lock;
 
         rval = qla24xx_start_scsi(sp);
         if (rval != QLA_SUCCESS)
                 goto qc24_host_busy_free_sp;
 
         spin_lock_irq(ha->host->host_lock);
 
         return 0;
 
 qc24_host_busy_free_sp:
         qla2x00_sp_free_dma(pha, sp);
         mempool_free(sp, pha->srb_mempool);
 
 qc24_host_busy_lock:
         spin_lock_irq(ha->host->host_lock);
         return SCSI_MLQUEUE_HOST_BUSY;
 
 qc24_target_busy:
         return SCSI_MLQUEUE_TARGET_BUSY;
 
 qc24_fail_command:
         done(cmd);
 
         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        1000
 #define ABORT_WAIT_ITER                ((10 * 1000) / (ABORT_POLLING_PERIOD))
         unsigned long wait_iter = ABORT_WAIT_ITER;
         int ret = QLA_SUCCESS;
 
         while (CMD_SP(cmd)) {
                 msleep(ABORT_POLLING_PERIOD);
 
                 if (--wait_iter)
                         break;
         }
         if (CMD_SP(cmd))
                 ret = QLA_FUNCTION_FAILED;
 
         return ret;
 }
 
 /*
  * 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
  */
 int
 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 {
         int                return_status;
         unsigned long        wait_online;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
         while (((test_bit(ISP_ABORT_NEEDED, &pha->dpc_flags)) ||
             test_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags) ||
             test_bit(ISP_ABORT_RETRY, &pha->dpc_flags) ||
             pha->dpc_active) && time_before(jiffies, wait_online)) {
 
                 msleep(1000);
         }
         if (pha->flags.online)
                 return_status = QLA_SUCCESS;
         else
                 return_status = QLA_FUNCTION_FAILED;
 
         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 ;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         /* wait for 5 min at the max for loop to be ready */
         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 
         while ((!atomic_read(&pha->loop_down_timer) &&
             atomic_read(&pha->loop_state) == LOOP_DOWN) ||
             atomic_read(&pha->loop_state) != LOOP_READY) {
                 if (atomic_read(&pha->loop_state) == LOOP_DEAD) {
                         return_status = QLA_FUNCTION_FAILED;
                         break;
                 }
                 msleep(1000);
                 if (time_after_eq(jiffies, loop_timeout)) {
                         return_status = QLA_FUNCTION_FAILED;
                         break;
                 }
         }
         return (return_status);
 }
 
 void
 qla2x00_abort_fcport_cmds(fc_port_t *fcport)
 {
         int cnt;
         unsigned long flags;
         srb_t *sp;
         scsi_qla_host_t *ha = fcport->ha;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         spin_lock_irqsave(&pha->hardware_lock, flags);
         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
                 sp = pha->outstanding_cmds[cnt];
                 if (!sp)
                         continue;
                 if (sp->fcport != fcport)
                         continue;
 
                 spin_unlock_irqrestore(&pha->hardware_lock, flags);
                 if (ha->isp_ops->abort_command(ha, sp)) {
                         DEBUG2(qla_printk(KERN_WARNING, ha,
                             "Abort failed --  %lx\n", sp->cmd->serial_number));
                 } else {
                         if (qla2x00_eh_wait_on_command(ha, sp->cmd) !=
                             QLA_SUCCESS)
                                 DEBUG2(qla_printk(KERN_WARNING, ha,
                                     "Abort failed while waiting --  %lx\n",
                                     sp->cmd->serial_number));
 
                 }
                 spin_lock_irqsave(&pha->hardware_lock, flags);
         }
         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 }
 
 static void
 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 {
         struct Scsi_Host *shost = cmnd->device->host;
         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
         unsigned long flags;
 
         spin_lock_irqsave(shost->host_lock, flags);
         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
                 spin_unlock_irqrestore(shost->host_lock, flags);
                 msleep(1000);
                 spin_lock_irqsave(shost->host_lock, flags);
         }
         spin_unlock_irqrestore(shost->host_lock, flags);
         return;
 }
 
 /**************************************************************************
 * 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:
 *    Only return FAILED if command not returned by firmware.
 **************************************************************************/
 static int
 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
         srb_t *sp;
         int ret, i;
         unsigned int id, lun;
         unsigned long serial;
         unsigned long flags;
         int wait = 0;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         qla2x00_block_error_handler(cmd);
 
         if (!CMD_SP(cmd))
                 return SUCCESS;
 
         ret = SUCCESS;
 
         id = cmd->device->id;
         lun = cmd->device->lun;
         serial = cmd->serial_number;
 
         /* Check active list for command command. */
         spin_lock_irqsave(&pha->hardware_lock, flags);
         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
                 sp = pha->outstanding_cmds[i];
 
                 if (sp == NULL)
                         continue;
 
                 if (sp->cmd != cmd)
                         continue;
 
                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
                     __func__, ha->host_no, sp, serial));
 
                 spin_unlock_irqrestore(&pha->hardware_lock, flags);
                 if (ha->isp_ops->abort_command(ha, sp)) {
                         DEBUG2(printk("%s(%ld): abort_command "
                             "mbx failed.\n", __func__, ha->host_no));
                         ret = FAILED;
                 } else {
                         DEBUG3(printk("%s(%ld): abort_command "
                             "mbx success.\n", __func__, ha->host_no));
                         wait = 1;
                 }
                 spin_lock_irqsave(&pha->hardware_lock, flags);
 
                 break;
         }
         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 
         /* Wait for the command to be returned. */
         if (wait) {
                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
                         qla_printk(KERN_ERR, ha,
                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
                             "%x.\n", ha->host_no, id, lun, serial, ret);
                         ret = FAILED;
                 }
         }
 
         qla_printk(KERN_INFO, ha,
             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
             ha->host_no, id, lun, wait, serial, ret);
 
         return ret;
 }
 
 enum nexus_wait_type {
         WAIT_HOST = 0,
         WAIT_TARGET,
         WAIT_LUN,
 };
 
 static int
 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha, unsigned int t,
     unsigned int l, enum nexus_wait_type type)
 {
         int cnt, match, status;
         srb_t *sp;
         unsigned long flags;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         status = QLA_SUCCESS;
         spin_lock_irqsave(&pha->hardware_lock, flags);
         for (cnt = 1; status == QLA_SUCCESS && cnt < MAX_OUTSTANDING_COMMANDS;
             cnt++) {
                 sp = pha->outstanding_cmds[cnt];
                 if (!sp)
                         continue;
 
                 if (ha->vp_idx != sp->fcport->ha->vp_idx)
                         continue;
                 match = 0;
                 switch (type) {
                 case WAIT_HOST:
                         match = 1;
                         break;
                 case WAIT_TARGET:
                         match = sp->cmd->device->id == t;
                         break;
                 case WAIT_LUN:
                         match = (sp->cmd->device->id == t &&
                             sp->cmd->device->lun == l);
                         break;
                 }
                 if (!match)
                         continue;
 
                 spin_unlock_irqrestore(&pha->hardware_lock, flags);
                 status = qla2x00_eh_wait_on_command(ha, sp->cmd);
                 spin_lock_irqsave(&pha->hardware_lock, flags);
         }
         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 
         return status;
 }
 
 static char *reset_errors[] = {
         "HBA not online",
         "HBA not ready",
         "Task management failed",
         "Waiting for command completions",
 };
 
 static int
 __qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
     struct scsi_cmnd *cmd, int (*do_reset)(struct fc_port *, unsigned int))
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
         int err;
 
         qla2x00_block_error_handler(cmd);
 
         if (!fcport)
                 return FAILED;
 
         qla_printk(KERN_INFO, ha, "scsi(%ld:%d:%d): %s RESET ISSUED.\n",
             ha->host_no, cmd->device->id, cmd->device->lun, name);
 
         err = 0;
         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
                 goto eh_reset_failed;
         err = 1;
         if (qla2x00_wait_for_loop_ready(ha) != QLA_SUCCESS)
                 goto eh_reset_failed;
         err = 2;
         if (do_reset(fcport, cmd->device->lun) != QLA_SUCCESS)
                 goto eh_reset_failed;
         err = 3;
         if (qla2x00_eh_wait_for_pending_commands(ha, cmd->device->id,
             cmd->device->lun, type) != QLA_SUCCESS)
                 goto eh_reset_failed;
 
         qla_printk(KERN_INFO, ha, "scsi(%ld:%d:%d): %s RESET SUCCEEDED.\n",
             ha->host_no, cmd->device->id, cmd->device->lun, name);
 
         return SUCCESS;
 
  eh_reset_failed:
         qla_printk(KERN_INFO, ha, "scsi(%ld:%d:%d): %s RESET FAILED: %s.\n",
             ha->host_no, cmd->device->id, cmd->device->lun, name,
             reset_errors[err]);
         return FAILED;
 }
 
 static int
 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 
         return __qla2xxx_eh_generic_reset("DEVICE", WAIT_LUN, cmd,
             ha->isp_ops->lun_reset);
 }
 
 static int
 qla2xxx_eh_target_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 
         return __qla2xxx_eh_generic_reset("TARGET", WAIT_TARGET, cmd,
             ha->isp_ops->target_reset);
 }
 
 /**************************************************************************
 * 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).
 *
 **************************************************************************/
 static int
 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
         scsi_qla_host_t *pha = to_qla_parent(ha);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
         int ret = FAILED;
         unsigned int id, lun;
         unsigned long serial;
 
         qla2x00_block_error_handler(cmd);
 
         id = cmd->device->id;
         lun = cmd->device->lun;
         serial = cmd->serial_number;
 
         if (!fcport)
                 return ret;
 
         qla_printk(KERN_INFO, ha,
             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 
         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
                 DEBUG2(printk("%s failed:board disabled\n",__func__));
                 goto eh_bus_reset_done;
         }
 
         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
                         ret = SUCCESS;
         }
         if (ret == FAILED)
                 goto eh_bus_reset_done;
 
         /* Flush outstanding commands. */
         if (qla2x00_eh_wait_for_pending_commands(pha, 0, 0, WAIT_HOST) !=
             QLA_SUCCESS)
                 ret = FAILED;
 
 eh_bus_reset_done:
         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
             (ret == FAILED) ? "failed" : "succeded");
 
         return ret;
 }
 
 /**************************************************************************
 * 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:
 **************************************************************************/
 static int
 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
         int ret = FAILED;
         unsigned int id, lun;
         unsigned long serial;
         scsi_qla_host_t *pha = to_qla_parent(ha);
 
         qla2x00_block_error_handler(cmd);
 
         id = cmd->device->id;
         lun = cmd->device->lun;
         serial = cmd->serial_number;
 
         if (!fcport)
                 return ret;
 
         qla_printk(KERN_INFO, ha,
             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 
         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
                 goto eh_host_reset_lock;
 
         /*
          * 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.
          */
         qla2x00_wait_for_loop_ready(ha);
         set_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
         if (qla2x00_abort_isp(pha)) {
                 clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
                 /* failed. schedule dpc to try */
                 set_bit(ISP_ABORT_NEEDED, &pha->dpc_flags);
 
                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
                         goto eh_host_reset_lock;
         }
         clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
 
         /* Waiting for our command in done_queue to be returned to OS.*/
         if (qla2x00_eh_wait_for_pending_commands(pha, 0, 0, WAIT_HOST) ==
            QLA_SUCCESS)
                ret = SUCCESS;

        if (ha->parent)
                qla2x00_vp_abort_isp(ha);

eh_host_reset_lock:
        qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
            (ret == FAILED) ? "failed" : "succeded");

        return ret;
}

/*
* qla2x00_loop_reset
*      Issue loop reset.
*
* Input:
*      ha = adapter block pointer.
*
* Returns:
*      0 = success
*/
int
qla2x00_loop_reset(scsi_qla_host_t *ha)
{
        int ret;
        struct fc_port *fcport;

        if (ha->flags.enable_lip_full_login) {
                ret = qla2x00_full_login_lip(ha);
                if (ret != QLA_SUCCESS) {
                        DEBUG2_3(printk("%s(%ld): bus_reset failed: "
                            "full_login_lip=%d.\n", __func__, ha->host_no,
                            ret));
                }
                atomic_set(&ha->loop_state, LOOP_DOWN);
                atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
                qla2x00_mark_all_devices_lost(ha, 0);
                qla2x00_wait_for_loop_ready(ha);
        }

        if (ha->flags.enable_lip_reset) {
                ret = qla2x00_lip_reset(ha);
                if (ret != QLA_SUCCESS) {
                        DEBUG2_3(printk("%s(%ld): bus_reset failed: "
                            "lip_reset=%d.\n", __func__, ha->host_no, ret));
                }
                qla2x00_wait_for_loop_ready(ha);
        }

        if (ha->flags.enable_target_reset) {
                list_for_each_entry(fcport, &ha->fcports, list) {
                        if (fcport->port_type != FCT_TARGET)
                                continue;

                        ret = ha->isp_ops->target_reset(fcport, 0);
                        if (ret != QLA_SUCCESS) {
                                DEBUG2_3(printk("%s(%ld): bus_reset failed: "
                                    "target_reset=%d d_id=%x.\n", __func__,
                                    ha->host_no, ret, fcport->d_id.b24));
                        }
                }
        }

        /* Issue marker command only when we are going to start the I/O */
        ha->marker_needed = 1;

        return QLA_SUCCESS;
}

void
qla2x00_abort_all_cmds(scsi_qla_host_t *ha, int res)
{
        int cnt;
        unsigned long flags;
        srb_t *sp;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
                sp = ha->outstanding_cmds[cnt];
                if (sp) {
                        ha->outstanding_cmds[cnt] = NULL;
                        sp->cmd->result = res;
                        qla2x00_sp_compl(ha, sp);
                }
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static int
qla2xxx_slave_alloc(struct scsi_device *sdev)
{
        struct fc_rport *rport = starget_to_rport(scsi_target(sdev));

        if (!rport || fc_remote_port_chkready(rport))
                return -ENXIO;

        sdev->hostdata = *(fc_port_t **)rport->dd_data;

        return 0;
}

static int
qla2xxx_slave_configure(struct scsi_device *sdev)
{
        scsi_qla_host_t *ha = shost_priv(sdev->host);
        struct fc_rport *rport = starget_to_rport(sdev->sdev_target);

        if (sdev->tagged_supported)
                scsi_activate_tcq(sdev, ha->max_q_depth);
        else
                scsi_deactivate_tcq(sdev, ha->max_q_depth);

        rport->dev_loss_tmo = ha->port_down_retry_count;

        return 0;
}

static void
qla2xxx_slave_destroy(struct scsi_device *sdev)
{
        sdev->hostdata = NULL;
}

static int
qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
{
        scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
        return sdev->queue_depth;
}

static int
qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
{
        if (sdev->tagged_supported) {
                scsi_set_tag_type(sdev, tag_type);
                if (tag_type)
                        scsi_activate_tcq(sdev, sdev->queue_depth);
                else
                        scsi_deactivate_tcq(sdev, sdev->queue_depth);
        } else
                tag_type = 0;

        return tag_type;
}

/**
 * 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 a 32bit DMA mask. */
        ha->flags.enable_64bit_addressing = 0;

        if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
                /* Any upper-dword bits set? */
                if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
                    !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
                        /* Ok, a 64bit DMA mask is applicable. */
                        ha->flags.enable_64bit_addressing = 1;
                        ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
                        ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
                        return;
                }
        }

        dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
        pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
}

static void
qla2x00_enable_intrs(scsi_qla_host_t *ha)
{
        unsigned long flags = 0;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 1;
        /* enable risc and host interrupts */
        WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
        RD_REG_WORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

}

static void
qla2x00_disable_intrs(scsi_qla_host_t *ha)
{
        unsigned long flags = 0;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 0;
        /* disable risc and host interrupts */
        WRT_REG_WORD(&reg->ictrl, 0);
        RD_REG_WORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static void
qla24xx_enable_intrs(scsi_qla_host_t *ha)
{
        unsigned long flags = 0;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 1;
        WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
        RD_REG_DWORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static void
qla24xx_disable_intrs(scsi_qla_host_t *ha)
{
        unsigned long flags = 0;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 0;
        WRT_REG_DWORD(&reg->ictrl, 0);
        RD_REG_DWORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static struct isp_operations qla2100_isp_ops = {
        .pci_config                = qla2100_pci_config,
        .reset_chip                = qla2x00_reset_chip,
        .chip_diag                = qla2x00_chip_diag,
        .config_rings                = qla2x00_config_rings,
        .reset_adapter                = qla2x00_reset_adapter,
        .nvram_config                = qla2x00_nvram_config,
        .update_fw_options        = qla2x00_update_fw_options,
        .load_risc                = qla2x00_load_risc,
        .pci_info_str                = qla2x00_pci_info_str,
        .fw_version_str                = qla2x00_fw_version_str,
        .intr_handler                = qla2100_intr_handler,
        .enable_intrs                = qla2x00_enable_intrs,
        .disable_intrs                = qla2x00_disable_intrs,
        .abort_command                = qla2x00_abort_command,
        .target_reset                = qla2x00_abort_target,
        .lun_reset                = qla2x00_lun_reset,
        .fabric_login                = qla2x00_login_fabric,
        .fabric_logout                = qla2x00_fabric_logout,
        .calc_req_entries        = qla2x00_calc_iocbs_32,
        .build_iocbs                = qla2x00_build_scsi_iocbs_32,
        .prep_ms_iocb                = qla2x00_prep_ms_iocb,
        .prep_ms_fdmi_iocb        = qla2x00_prep_ms_fdmi_iocb,
        .read_nvram                = qla2x00_read_nvram_data,
        .write_nvram                = qla2x00_write_nvram_data,
        .fw_dump                = qla2100_fw_dump,
        .beacon_on                = NULL,
        .beacon_off                = NULL,
        .beacon_blink                = NULL,
        .read_optrom                = qla2x00_read_optrom_data,
        .write_optrom                = qla2x00_write_optrom_data,
        .get_flash_version        = qla2x00_get_flash_version,
};

static struct isp_operations qla2300_isp_ops = {
        .pci_config                = qla2300_pci_config,
        .reset_chip                = qla2x00_reset_chip,
        .chip_diag                = qla2x00_chip_diag,
        .config_rings                = qla2x00_config_rings,
        .reset_adapter                = qla2x00_reset_adapter,
        .nvram_config                = qla2x00_nvram_config,
        .update_fw_options        = qla2x00_update_fw_options,
        .load_risc                = qla2x00_load_risc,
        .pci_info_str                = qla2x00_pci_info_str,
        .fw_version_str                = qla2x00_fw_version_str,
        .intr_handler                = qla2300_intr_handler,
        .enable_intrs                = qla2x00_enable_intrs,
        .disable_intrs                = qla2x00_disable_intrs,
        .abort_command                = qla2x00_abort_command,
        .target_reset                = qla2x00_abort_target,
        .lun_reset                = qla2x00_lun_reset,
        .fabric_login                = qla2x00_login_fabric,
        .fabric_logout                = qla2x00_fabric_logout,
        .calc_req_entries        = qla2x00_calc_iocbs_32,
        .build_iocbs                = qla2x00_build_scsi_iocbs_32,
        .prep_ms_iocb                = qla2x00_prep_ms_iocb,
        .prep_ms_fdmi_iocb        = qla2x00_prep_ms_fdmi_iocb,
        .read_nvram                = qla2x00_read_nvram_data,
        .write_nvram                = qla2x00_write_nvram_data,
        .fw_dump                = qla2300_fw_dump,
        .beacon_on                = qla2x00_beacon_on,
        .beacon_off                = qla2x00_beacon_off,
        .beacon_blink                = qla2x00_beacon_blink,
        .read_optrom                = qla2x00_read_optrom_data,
        .write_optrom                = qla2x00_write_optrom_data,
        .get_flash_version        = qla2x00_get_flash_version,
};

static struct isp_operations qla24xx_isp_ops = {
        .pci_config                = qla24xx_pci_config,
        .reset_chip                = qla24xx_reset_chip,
        .chip_diag                = qla24xx_chip_diag,
        .config_rings                = qla24xx_config_rings,
        .reset_adapter                = qla24xx_reset_adapter,
        .nvram_config                = qla24xx_nvram_config,
        .update_fw_options        = qla24xx_update_fw_options,
        .load_risc                = qla24xx_load_risc,
        .pci_info_str                = qla24xx_pci_info_str,
        .fw_version_str                = qla24xx_fw_version_str,
        .intr_handler                = qla24xx_intr_handler,
        .enable_intrs                = qla24xx_enable_intrs,
        .disable_intrs                = qla24xx_disable_intrs,
        .abort_command                = qla24xx_abort_command,
        .target_reset                = qla24xx_abort_target,
        .lun_reset                = qla24xx_lun_reset,
        .fabric_login                = qla24xx_login_fabric,
        .fabric_logout                = qla24xx_fabric_logout,
        .calc_req_entries        = NULL,
        .build_iocbs                = NULL,
        .prep_ms_iocb                = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb        = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram                = qla24xx_read_nvram_data,
        .write_nvram                = qla24xx_write_nvram_data,
        .fw_dump                = qla24xx_fw_dump,
        .beacon_on                = qla24xx_beacon_on,
        .beacon_off                = qla24xx_beacon_off,
        .beacon_blink                = qla24xx_beacon_blink,
        .read_optrom                = qla24xx_read_optrom_data,
        .write_optrom                = qla24xx_write_optrom_data,
        .get_flash_version        = qla24xx_get_flash_version,
};

static struct isp_operations qla25xx_isp_ops = {
        .pci_config                = qla25xx_pci_config,
        .reset_chip                = qla24xx_reset_chip,
        .chip_diag                = qla24xx_chip_diag,
        .config_rings                = qla24xx_config_rings,
        .reset_adapter                = qla24xx_reset_adapter,
        .nvram_config                = qla24xx_nvram_config,
        .update_fw_options        = qla24xx_update_fw_options,
        .load_risc                = qla24xx_load_risc,
        .pci_info_str                = qla24xx_pci_info_str,
        .fw_version_str                = qla24xx_fw_version_str,
        .intr_handler                = qla24xx_intr_handler,
        .enable_intrs                = qla24xx_enable_intrs,
        .disable_intrs                = qla24xx_disable_intrs,
        .abort_command                = qla24xx_abort_command,
        .target_reset                = qla24xx_abort_target,
        .lun_reset                = qla24xx_lun_reset,
        .fabric_login                = qla24xx_login_fabric,
        .fabric_logout                = qla24xx_fabric_logout,
        .calc_req_entries        = NULL,
        .build_iocbs                = NULL,
        .prep_ms_iocb                = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb        = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram                = qla25xx_read_nvram_data,
        .write_nvram                = qla25xx_write_nvram_data,
        .fw_dump                = qla25xx_fw_dump,
        .beacon_on                = qla24xx_beacon_on,
        .beacon_off                = qla24xx_beacon_off,
        .beacon_blink                = qla24xx_beacon_blink,
        .read_optrom                = qla25xx_read_optrom_data,
        .write_optrom                = qla24xx_write_optrom_data,
        .get_flash_version        = qla24xx_get_flash_version,
};

static inline void
qla2x00_set_isp_flags(scsi_qla_host_t *ha)
{
        ha->device_type = DT_EXTENDED_IDS;
        switch (ha->pdev->device) {
        case PCI_DEVICE_ID_QLOGIC_ISP2100:
                ha->device_type |= DT_ISP2100;
                ha->device_type &= ~DT_EXTENDED_IDS;
                ha->fw_srisc_address = RISC_START_ADDRESS_2100;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2200:
                ha->device_type |= DT_ISP2200;
                ha->device_type &= ~DT_EXTENDED_IDS;
                ha->fw_srisc_address = RISC_START_ADDRESS_2100;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2300:
                ha->device_type |= DT_ISP2300;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2312:
                ha->device_type |= DT_ISP2312;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2322:
                ha->device_type |= DT_ISP2322;
                ha->device_type |= DT_ZIO_SUPPORTED;
                if (ha->pdev->subsystem_vendor == 0x1028 &&
                    ha->pdev->subsystem_device == 0x0170)
                        ha->device_type |= DT_OEM_001;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP6312:
                ha->device_type |= DT_ISP6312;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP6322:
                ha->device_type |= DT_ISP6322;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2422:
                ha->device_type |= DT_ISP2422;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2432:
                ha->device_type |= DT_ISP2432;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP8432:
                ha->device_type |= DT_ISP8432;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP5422:
                ha->device_type |= DT_ISP5422;
                ha->device_type |= DT_FWI2;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP5432:
                ha->device_type |= DT_ISP5432;
                ha->device_type |= DT_FWI2;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2532:
                ha->device_type |= DT_ISP2532;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        }
}

static int
qla2x00_iospace_config(scsi_qla_host_t *ha)
{
        resource_size_t pio;

        if (pci_request_selected_regions(ha->pdev, ha->bars,
            QLA2XXX_DRIVER_NAME)) {
                qla_printk(KERN_WARNING, ha,
                    "Failed to reserve PIO/MMIO regions (%s)\n",
                    pci_name(ha->pdev));

                goto iospace_error_exit;
        }
        if (!(ha->bars & 1))
                goto skip_pio;

        /* We only need PIO for Flash operations on ISP2312 v2 chips. */
        pio = pci_resource_start(ha->pdev, 0);
        if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
                if (pci_resource_len(ha->pdev, 0) < 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;
        }
        ha->pio_address = pio;

skip_pio:
        /* Use MMIO operations for all accesses. */
        if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
                qla_printk(KERN_ERR, ha,
                    "region #1 not an MMIO resource (%s), aborting\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }
        if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
                qla_printk(KERN_ERR, ha,
                    "Invalid PCI mem region size (%s), aborting\n",
                        pci_name(ha->pdev));
                goto iospace_error_exit;
        }

        ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), 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);
}

static void
qla2xxx_scan_start(struct Scsi_Host *shost)
{
        scsi_qla_host_t *ha = shost_priv(shost);

        set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
        set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
        set_bit(RSCN_UPDATE, &ha->dpc_flags);
        set_bit(NPIV_CONFIG_NEEDED, &ha->dpc_flags);
}

static int
qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
        scsi_qla_host_t *ha = shost_priv(shost);

        if (!ha->host)
                return 1;
        if (time > ha->loop_reset_delay * HZ)
                return 1;

        return atomic_read(&ha->loop_state) == LOOP_READY;
}

/*
 * PCI driver interface
 */
static int __devinit
qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
        int        ret = -ENODEV;
        struct Scsi_Host *host;
        scsi_qla_host_t *ha;
        char pci_info[30];
        char fw_str[30];
        struct scsi_host_template *sht;
        int bars, mem_only = 0;

        bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
        sht = &qla2x00_driver_template;
        if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8432 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532) {
                bars = pci_select_bars(pdev, IORESOURCE_MEM);
                sht = &qla24xx_driver_template;
                mem_only = 1;
        }

        if (mem_only) {
                if (pci_enable_device_mem(pdev))
                        goto probe_out;
        } else {
                if (pci_enable_device(pdev))
                        goto probe_out;
        }

        /* This may fail but that's ok */
        pci_enable_pcie_error_reporting(pdev);

        host = scsi_host_alloc(sht, 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 = shost_priv(host);
        memset(ha, 0, sizeof(scsi_qla_host_t));

        ha->pdev = pdev;
        ha->host = host;
        ha->host_no = host->host_no;
        sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
        ha->parent = NULL;
        ha->bars = bars;
        ha->mem_only = mem_only;
        spin_lock_init(&ha->hardware_lock);

        /* Set ISP-type information. */
        qla2x00_set_isp_flags(ha);

        /* Configure PCI I/O space */
        ret = qla2x00_iospace_config(ha);
        if (ret)
                goto probe_failed;

        qla_printk(KERN_INFO, ha,
            "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
            ha->iobase);

        ha->prev_topology = 0;
        ha->init_cb_size = sizeof(init_cb_t);
        ha->mgmt_svr_loop_id = MANAGEMENT_SERVER + ha->vp_idx;
        ha->link_data_rate = PORT_SPEED_UNKNOWN;
        ha->optrom_size = OPTROM_SIZE_2300;

        ha->max_q_depth = MAX_Q_DEPTH;
        if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
                ha->max_q_depth = ql2xmaxqdepth;

        /* Assign ISP specific operations. */
        if (IS_QLA2100(ha)) {
                host->max_id = 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;
                ha->gid_list_info_size = 4;
                ha->isp_ops = &qla2100_isp_ops;
        } else if (IS_QLA2200(ha)) {
                host->max_id = 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;
                ha->gid_list_info_size = 4;
                ha->isp_ops = &qla2100_isp_ops;
        } else if (IS_QLA23XX(ha)) {
                host->max_id = 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;
                ha->gid_list_info_size = 6;
                if (IS_QLA2322(ha) || IS_QLA6322(ha))
                        ha->optrom_size = OPTROM_SIZE_2322;
                ha->isp_ops = &qla2300_isp_ops;
        } else if (IS_QLA24XX_TYPE(ha)) {
                host->max_id = MAX_TARGETS_2200;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
                ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
                ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
                ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_24XX;
                ha->isp_ops = &qla24xx_isp_ops;
        } else if (IS_QLA25XX(ha)) {
                host->max_id = MAX_TARGETS_2200;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
                ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
                ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
                ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_25XX;
                ha->isp_ops = &qla25xx_isp_ops;
        }
        host->can_queue = ha->request_q_length + 128;

        mutex_init(&ha->vport_lock);
        init_completion(&ha->mbx_cmd_comp);
        complete(&ha->mbx_cmd_comp);
        init_completion(&ha->mbx_intr_comp);

        INIT_LIST_HEAD(&ha->list);
        INIT_LIST_HEAD(&ha->fcports);
        INIT_LIST_HEAD(&ha->vp_list);
        INIT_LIST_HEAD(&ha->work_list);

        set_bit(0, (unsigned long *) ha->vp_idx_map);

        qla2x00_config_dma_addressing(ha);
        if (qla2x00_mem_alloc(ha)) {
                qla_printk(KERN_WARNING, ha,
                    "[ERROR] Failed to allocate memory for adapter\n");

                ret = -ENOMEM;
                goto probe_failed;
        }

        if (qla2x00_initialize_adapter(ha)) {
                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));

                ret = -ENODEV;
                goto probe_failed;
        }

        /*
         * Startup the kernel thread for this host adapter
         */
        ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
                        "%s_dpc", ha->host_str);
        if (IS_ERR(ha->dpc_thread)) {
                qla_printk(KERN_WARNING, ha,
                    "Unable to start DPC thread!\n");
                ret = PTR_ERR(ha->dpc_thread);
                goto probe_failed;
        }

        host->this_id = 255;
        host->cmd_per_lun = 3;
        host->unique_id = host->host_no;
        host->max_cmd_len = MAX_CMDSZ;
        host->max_channel = MAX_BUSES - 1;
        host->max_lun = MAX_LUNS;
        host->transportt = qla2xxx_transport_template;

        ret = qla2x00_request_irqs(ha);
        if (ret)
                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));

        pci_set_drvdata(pdev, ha);

        ha->flags.init_done = 1;
        ha->flags.online = 1;

        ret = scsi_add_host(host, &pdev->dev);
        if (ret)
                goto probe_failed;

        ha->isp_ops->enable_intrs(ha);

        scsi_scan_host(host);

        qla2x00_alloc_sysfs_attr(ha);

        qla2x00_init_host_attr(ha);

        qla2x00_dfs_setup(ha);

        qla_printk(KERN_INFO, ha, "\n"
            " QLogic Fibre Channel HBA Driver: %s\n"
            "  QLogic %s - %s\n"
            "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
            qla2x00_version_str, ha->model_number,
            ha->model_desc ? ha->model_desc: "", pdev->device,
            ha->isp_ops->pci_info_str(ha, pci_info), pci_name(pdev),
            ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
            ha->isp_ops->fw_version_str(ha, fw_str));

        return 0;

probe_failed:
        qla2x00_free_device(ha);

        scsi_host_put(host);

probe_disable_device:
        pci_disable_device(pdev);

probe_out:
        return ret;
}

static void
qla2x00_remove_one(struct pci_dev *pdev)
{
        scsi_qla_host_t *ha, *vha, *temp;

        ha = pci_get_drvdata(pdev);

        list_for_each_entry_safe(vha, temp, &ha->vp_list, vp_list)
                fc_vport_terminate(vha->fc_vport);

        set_bit(UNLOADING, &ha->dpc_flags);

        qla2x00_dfs_remove(ha);

        qla84xx_put_chip(ha);

        qla2x00_free_sysfs_attr(ha);

        fc_remove_host(ha->host);

        scsi_remove_host(ha->host);

        qla2x00_free_device(ha);

        scsi_host_put(ha->host);

        pci_disable_device(pdev);
        pci_set_drvdata(pdev, NULL);
}

static void
qla2x00_free_device(scsi_qla_host_t *ha)
{
        qla2x00_abort_all_cmds(ha, DID_NO_CONNECT << 16);

        /* Disable timer */
        if (ha->timer_active)
                qla2x00_stop_timer(ha);

        ha->flags.online = 0;

        /* Kill the kernel thread for this host */
        if (ha->dpc_thread) {
                struct task_struct *t = ha->dpc_thread;

                /*
                 * qla2xxx_wake_dpc checks for ->dpc_thread
                 * so we need to zero it out.
                 */
                ha->dpc_thread = NULL;
                kthread_stop(t);
        }

        if (ha->flags.fce_enabled)
                qla2x00_disable_fce_trace(ha, NULL, NULL);

        if (ha->eft)
                qla2x00_disable_eft_trace(ha);

        /* Stop currently executing firmware. */
        qla2x00_try_to_stop_firmware(ha);

        /* turn-off interrupts on the card */
        if (ha->interrupts_on)
                ha->isp_ops->disable_intrs(ha);

        qla2x00_mem_free(ha);

        qla2x00_free_irqs(ha);

        /* release io space registers  */
        if (ha->iobase)
                iounmap(ha->iobase);
        pci_release_selected_regions(ha->pdev, ha->bars);
}

static inline void
qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
    int defer)
{
        struct fc_rport *rport;
        scsi_qla_host_t *pha = to_qla_parent(ha);

        if (!fcport->rport)
                return;

        rport = fcport->rport;
        if (defer) {
                spin_lock_irq(ha->host->host_lock);
                fcport->drport = rport;
                spin_unlock_irq(ha->host->host_lock);
                set_bit(FCPORT_UPDATE_NEEDED, &pha->dpc_flags);
                qla2xxx_wake_dpc(pha);
        } else
                fc_remote_port_delete(rport);
}

/*
 * 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, int defer)
{
        if (atomic_read(&fcport->state) == FCS_ONLINE &&
            ha->vp_idx == fcport->vp_idx)
                qla2x00_schedule_rport_del(ha, fcport, defer);

        /*
         * 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, int defer)
{
        fc_port_t *fcport;
        scsi_qla_host_t *pha = to_qla_parent(ha);

        list_for_each_entry(fcport, &pha->fcports, list) {
                if (ha->vp_idx != fcport->vp_idx)
                        continue;
                /*
                 * No point in marking the device as lost, if the device is
                 * already DEAD.
                 */
                if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
                        continue;
                if (atomic_read(&fcport->state) == FCS_ONLINE)
                        qla2x00_schedule_rport_del(ha, fcport, defer);
                atomic_set(&fcport->state, FCS_DEVICE_LOST);
        }
}

/*
* qla2x00_mem_alloc
*      Allocates adapter memory.
*
* Returns:
*      0  = success.
*      !0  = failure.
*/
static int
qla2x00_mem_alloc(scsi_qla_host_t *ha)
{
        char        name[16];

        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)
                goto fail;

        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)
                goto fail_free_request_ring;

        ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
            &ha->gid_list_dma, GFP_KERNEL);
        if (!ha->gid_list)
                goto fail_free_response_ring;

        ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
            &ha->init_cb_dma, GFP_KERNEL);
        if (!ha->init_cb)
                goto fail_free_gid_list;

        snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
            ha->host_no);
        ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
            DMA_POOL_SIZE, 8, 0);
        if (!ha->s_dma_pool)
                goto fail_free_init_cb;

        ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
        if (!ha->srb_mempool)
                goto fail_free_s_dma_pool;

        /* Get memory for cached NVRAM */
        ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
        if (!ha->nvram)
                goto fail_free_srb_mempool;

        /* 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)
                        goto fail_free_nvram;
        } 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)
                        goto fail_free_nvram;

                /* 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)
                        goto fail_free_ms_iocb;
        }

        return 0;

fail_free_ms_iocb:
        dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
        ha->ms_iocb = NULL;
        ha->ms_iocb_dma = 0;
fail_free_nvram:
        kfree(ha->nvram);
        ha->nvram = NULL;
fail_free_srb_mempool:
        mempool_destroy(ha->srb_mempool);
        ha->srb_mempool = NULL;
fail_free_s_dma_pool:
        dma_pool_destroy(ha->s_dma_pool);
        ha->s_dma_pool = NULL;
fail_free_init_cb:
        dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
            ha->init_cb_dma);
        ha->init_cb = NULL;
        ha->init_cb_dma = 0;
fail_free_gid_list:
        dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
            ha->gid_list_dma);
        ha->gid_list = NULL;
        ha->gid_list_dma = 0;
fail_free_response_ring:
        dma_free_coherent(&ha->pdev->dev, (ha->response_q_length + 1) *
            sizeof(response_t), ha->response_ring, ha->response_dma);
        ha->response_ring = NULL;
        ha->response_dma = 0;
fail_free_request_ring:
        dma_free_coherent(&ha->pdev->dev, (ha->request_q_length + 1) *
            sizeof(request_t), ha->request_ring, ha->request_dma);
        ha->request_ring = NULL;
        ha->request_dma = 0;
fail:
        return -ENOMEM;
}

/*
* qla2x00_mem_free
*      Frees all adapter allocated memory.
*
* Input:
*      ha = adapter block pointer.
*/
static void
qla2x00_mem_free(scsi_qla_host_t *ha)
{
        struct list_head        *fcpl, *fcptemp;
        fc_port_t        *fcport;

        if (ha->srb_mempool)
                mempool_destroy(ha->srb_mempool);

        if (ha->fce)
                dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
                    ha->fce_dma);

        if (ha->fw_dump) {
                if (ha->eft)
                        dma_free_coherent(&ha->pdev->dev,
                            ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
                vfree(ha->fw_dump);
        }

        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->sfp_data)
                dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);

        if (ha->ms_iocb)
                dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);

        if (ha->s_dma_pool)
                dma_pool_destroy(ha->s_dma_pool);

        if (ha->init_cb)
                dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
                    ha->init_cb, ha->init_cb_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->srb_mempool = NULL;
        ha->eft = NULL;
        ha->eft_dma = 0;
        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->init_cb = NULL;
        ha->init_cb_dma = 0;

        ha->s_dma_pool = NULL;

        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 ports */
                list_del_init(&fcport->list);
                kfree(fcport);
        }
        INIT_LIST_HEAD(&ha->fcports);

        ha->fw_dump = NULL;
        ha->fw_dumped = 0;
        ha->fw_dump_reading = 0;

        vfree(ha->optrom_buffer);
        kfree(ha->nvram);
}

static struct qla_work_evt *
qla2x00_alloc_work(struct scsi_qla_host *ha, enum qla_work_type type,
    int locked)
{
        struct qla_work_evt *e;

        e = kzalloc(sizeof(struct qla_work_evt), locked ? GFP_ATOMIC:
            GFP_KERNEL);
        if (!e)
                return NULL;

        INIT_LIST_HEAD(&e->list);
        e->type = type;
        e->flags = QLA_EVT_FLAG_FREE;
        return e;
}

static int
qla2x00_post_work(struct scsi_qla_host *ha, struct qla_work_evt *e, int locked)
{
        unsigned long uninitialized_var(flags);
        scsi_qla_host_t *pha = to_qla_parent(ha);

        if (!locked)
                spin_lock_irqsave(&pha->hardware_lock, flags);
        list_add_tail(&e->list, &ha->work_list);
        qla2xxx_wake_dpc(ha);
        if (!locked)
                spin_unlock_irqrestore(&pha->hardware_lock, flags);
        return QLA_SUCCESS;
}

int
qla2x00_post_aen_work(struct scsi_qla_host *ha, enum fc_host_event_code code,
    u32 data)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(ha, QLA_EVT_AEN, 1);
        if (!e)
                return QLA_FUNCTION_FAILED;

        e->u.aen.code = code;
        e->u.aen.data = data;
        return qla2x00_post_work(ha, e, 1);
}

int
qla2x00_post_hwe_work(struct scsi_qla_host *ha, uint16_t code, uint16_t d1,
    uint16_t d2, uint16_t d3)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(ha, QLA_EVT_HWE_LOG, 1);
        if (!e)
                return QLA_FUNCTION_FAILED;

        e->u.hwe.code = code;
        e->u.hwe.d1 = d1;
        e->u.hwe.d2 = d2;
        e->u.hwe.d3 = d3;
        return qla2x00_post_work(ha, e, 1);
}

static void
qla2x00_do_work(struct scsi_qla_host *ha)
{
        struct qla_work_evt *e;
        scsi_qla_host_t *pha = to_qla_parent(ha);

        spin_lock_irq(&pha->hardware_lock);
        while (!list_empty(&ha->work_list)) {
                e = list_entry(ha->work_list.next, struct qla_work_evt, list);
                list_del_init(&e->list);
                spin_unlock_irq(&pha->hardware_lock);

                switch (e->type) {
                case QLA_EVT_AEN:
                        fc_host_post_event(ha->host, fc_get_event_number(),
                            e->u.aen.code, e->u.aen.data);
                        break;
                case QLA_EVT_HWE_LOG:
                        qla2xxx_hw_event_log(ha, e->u.hwe.code, e->u.hwe.d1,
                            e->u.hwe.d2, e->u.hwe.d3);
                        break;
                }
                if (e->flags & QLA_EVT_FLAG_FREE)
                        kfree(e);
                spin_lock_irq(&pha->hardware_lock);
        }
        spin_unlock_irq(&pha->hardware_lock);
}

/**************************************************************************
* 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)
{
        int                rval;
        scsi_qla_host_t *ha;
        fc_port_t        *fcport;
        uint8_t                status;
        uint16_t        next_loopid;
        struct scsi_qla_host *vha;
        int             i;


        ha = (scsi_qla_host_t *)data;

        set_user_nice(current, -20);

        while (!kthread_should_stop()) {
                DEBUG3(printk("qla2x00: DPC handler sleeping\n"));

                set_current_state(TASK_INTERRUPTIBLE);
                schedule();
                __set_current_state(TASK_RUNNING);

                DEBUG3(printk("qla2x00: DPC handler waking up\n"));

                /* Initialization not yet finished. Don't do anything yet. */
                if (!ha->flags.init_done)
                        continue;

                DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));

                ha->dpc_active = 1;

                if (ha->flags.mbox_busy) {
                        ha->dpc_active = 0;
                        continue;
                }

                qla2x00_do_work(ha);

                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);
                        }

                        for_each_mapped_vp_idx(ha, i) {
                                list_for_each_entry(vha, &ha->vp_list,
                                    vp_list) {
                                        if (i == vha->vp_idx) {
                                                set_bit(ISP_ABORT_NEEDED,
                                                    &vha->dpc_flags);
                                                break;
                                        }
                                }
                        }

                        DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
                            ha->host_no));
                }

                if (test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags)) {
                        qla2x00_update_fcports(ha);
                        clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
                }

                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 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) {

                                        if (fcport->flags & FCF_FABRIC_DEVICE) {
                                                if (fcport->flags &
                                                    FCF_TAPE_PRESENT)
                                                        ha->isp_ops->fabric_logout(
                                                            ha, fcport->loop_id,
                                                            fcport->d_id.b.domain,
                                                            fcport->d_id.b.area,
                                                            fcport->d_id.b.al_pa);
                                                status = qla2x00_fabric_login(
                                                    ha, fcport, &next_loopid);
                                        } else
                                                status =
                                                    qla2x00_local_device_login(
                                                        ha, fcport);

                                        fcport->login_retry--;
                                        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));

                                                qla2x00_update_fcport(ha,
                                                    fcport);
                                        } 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 (fcport->login_retry == 0 && status != QLA_SUCCESS)
                                                fcport->loop_id = FC_NO_LOOP_ID;
                                }
                                if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
                                        break;
                        }
                        DEBUG(printk("scsi(%ld): qla2x00_port_login - 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))) {

                                rval = 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(NPIV_CONFIG_NEEDED, &ha->dpc_flags) &&
                    atomic_read(&ha->loop_state) == LOOP_READY) {
                        clear_bit(NPIV_CONFIG_NEEDED, &ha->dpc_flags);
                        qla2xxx_flash_npiv_conf(ha);
                }

                if (!ha->interrupts_on)
                        ha->isp_ops->enable_intrs(ha);

                if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
                        ha->isp_ops->beacon_blink(ha);

                qla2x00_do_dpc_all_vps(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_active = 0;

        return 0;
}

void
qla2xxx_wake_dpc(scsi_qla_host_t *ha)
{
        struct task_struct *t = ha->dpc_thread;

        if (!test_bit(UNLOADING, &ha->dpc_flags) && t)
                wake_up_process(t);
}

/*
*  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)));
        }
}

static void
qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
{
        struct scsi_cmnd *cmd = sp->cmd;

        if (sp->flags & SRB_DMA_VALID) {
                scsi_dma_unmap(cmd);
                sp->flags &= ~SRB_DMA_VALID;
        }
        CMD_SP(cmd) = NULL;
}

void
qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
{
        struct scsi_cmnd *cmd = sp->cmd;

        qla2x00_sp_free_dma(ha, sp);

        mempool_free(sp, ha->srb_mempool);

        cmd->scsi_done(cmd);
}

/**************************************************************************
*   qla2x00_timer
*
* Description:
*   One second timer
*
* Context: Interrupt
***************************************************************************/
void
qla2x00_timer(scsi_qla_host_t *ha)
{
        unsigned long        cpu_flags = 0;
        fc_port_t        *fcport;
        int                start_dpc = 0;
        int                index;
        srb_t                *sp;
        int                t;
        scsi_qla_host_t *pha = to_qla_parent(ha);

        /*
         * 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 remaining\n",
                            ha->host_no,
                            t, atomic_read(&fcport->port_down_timer)));
                }
                t++;
        } /* End of for fcport  */


        /* 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. */
                        /* NPIV - scan physical port only */
                        if (!ha->parent) {
                                spin_lock_irqsave(&ha->hardware_lock,
                                    cpu_flags);
                                for (index = 1;
                                    index < MAX_OUTSTANDING_COMMANDS;
                                    index++) {
                                        fc_port_t *sfcp;

                                        sp = ha->outstanding_cmds[index];
                                        if (!sp)
                                                continue;
                                        sfcp = sp->fcport;
                                        if (!(sfcp->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) &&
                            !ha->parent) {
                                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 remaining %d\n",
                    ha->host_no,
                    atomic_read(&ha->loop_down_timer)));
        }

        /* Check if beacon LED needs to be blinked */
        if (ha->beacon_blink_led == 1) {
                set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
                start_dpc++;
        }

        /* Process any deferred work. */
        if (!list_empty(&ha->work_list))
                start_dpc++;

        /* Schedule the DPC routine if needed */
        if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
            test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
            test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
            start_dpc ||
            test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
            test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
            test_bit(VP_DPC_NEEDED, &ha->dpc_flags) ||
            test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
                qla2xxx_wake_dpc(pha);

        qla2x00_restart_timer(ha, WATCH_INTERVAL);
}

/* Firmware interface routines. */

#define FW_BLOBS        6
#define FW_ISP21XX        0
#define FW_ISP22XX        1
#define FW_ISP2300        2
#define FW_ISP2322        3
#define FW_ISP24XX        4
#define FW_ISP25XX        5

#define FW_FILE_ISP21XX        "ql2100_fw.bin"
#define FW_FILE_ISP22XX        "ql2200_fw.bin"
#define FW_FILE_ISP2300        "ql2300_fw.bin"
#define FW_FILE_ISP2322        "ql2322_fw.bin"
#define FW_FILE_ISP24XX        "ql2400_fw.bin"
#define FW_FILE_ISP25XX        "ql2500_fw.bin"

static DEFINE_MUTEX(qla_fw_lock);

static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
        { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
        { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
        { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
        { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
        { .name = FW_FILE_ISP24XX, },
        { .name = FW_FILE_ISP25XX, },
};

struct fw_blob *
qla2x00_request_firmware(scsi_qla_host_t *ha)
{
        struct fw_blob *blob;

        blob = NULL;
        if (IS_QLA2100(ha)) {
                blob = &qla_fw_blobs[FW_ISP21XX];
        } else if (IS_QLA2200(ha)) {
                blob = &qla_fw_blobs[FW_ISP22XX];
        } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
                blob = &qla_fw_blobs[FW_ISP2300];
        } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                blob = &qla_fw_blobs[FW_ISP2322];
        } else if (IS_QLA24XX_TYPE(ha)) {
                blob = &qla_fw_blobs[FW_ISP24XX];
        } else if (IS_QLA25XX(ha)) {
                blob = &qla_fw_blobs[FW_ISP25XX];
        }

        mutex_lock(&qla_fw_lock);
        if (blob->fw)
                goto out;

        if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
                DEBUG2(printk("scsi(%ld): Failed to load firmware image "
                    "(%s).\n", ha->host_no, blob->name));
                blob->fw = NULL;
                blob = NULL;
                goto out;
        }

out:
        mutex_unlock(&qla_fw_lock);
        return blob;
}

static void
qla2x00_release_firmware(void)
{
        int idx;

        mutex_lock(&qla_fw_lock);
        for (idx = 0; idx < FW_BLOBS; idx++)
                if (qla_fw_blobs[idx].fw)
                        release_firmware(qla_fw_blobs[idx].fw);
        mutex_unlock(&qla_fw_lock);
}

static pci_ers_result_t
qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
        switch (state) {
        case pci_channel_io_normal:
                return PCI_ERS_RESULT_CAN_RECOVER;
        case pci_channel_io_frozen:
                pci_disable_device(pdev);
                return PCI_ERS_RESULT_NEED_RESET;
        case pci_channel_io_perm_failure:
                qla2x00_remove_one(pdev);
                return PCI_ERS_RESULT_DISCONNECT;
        }
        return PCI_ERS_RESULT_NEED_RESET;
}

static pci_ers_result_t
qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
{
        int risc_paused = 0;
        uint32_t stat;
        unsigned long flags;
        scsi_qla_host_t *ha = pci_get_drvdata(pdev);
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        if (IS_QLA2100(ha) || IS_QLA2200(ha)){
                stat = RD_REG_DWORD(&reg->hccr);
                if (stat & HCCR_RISC_PAUSE)
                        risc_paused = 1;
        } else if (IS_QLA23XX(ha)) {
                stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
                if (stat & HSR_RISC_PAUSED)
                        risc_paused = 1;
        } else if (IS_FWI2_CAPABLE(ha)) {
                stat = RD_REG_DWORD(&reg24->host_status);
                if (stat & HSRX_RISC_PAUSED)
                        risc_paused = 1;
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        if (risc_paused) {
                qla_printk(KERN_INFO, ha, "RISC paused -- mmio_enabled, "
                    "Dumping firmware!\n");
                ha->isp_ops->fw_dump(ha, 0);

                return PCI_ERS_RESULT_NEED_RESET;
        } else
                return PCI_ERS_RESULT_RECOVERED;
}

static pci_ers_result_t
qla2xxx_pci_slot_reset(struct pci_dev *pdev)
{
        pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
        scsi_qla_host_t *ha = pci_get_drvdata(pdev);
        int rc;

        if (ha->mem_only)
                rc = pci_enable_device_mem(pdev);
        else
                rc = pci_enable_device(pdev);

        if (rc) {
                qla_printk(KERN_WARNING, ha,
                    "Can't re-enable PCI device after reset.\n");

                return ret;
        }
        pci_set_master(pdev);

        if (ha->isp_ops->pci_config(ha))
                return ret;

        set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
        if (qla2x00_abort_isp(ha)== QLA_SUCCESS)
                ret =  PCI_ERS_RESULT_RECOVERED;
        clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);

        return ret;
}

static void
qla2xxx_pci_resume(struct pci_dev *pdev)
{
        scsi_qla_host_t *ha = pci_get_drvdata(pdev);
        int ret;

        ret = qla2x00_wait_for_hba_online(ha);
        if (ret != QLA_SUCCESS) {
                qla_printk(KERN_ERR, ha,
                    "the device failed to resume I/O "
                    "from slot/link_reset");
        }
        pci_cleanup_aer_uncorrect_error_status(pdev);
}

static struct pci_error_handlers qla2xxx_err_handler = {
        .error_detected = qla2xxx_pci_error_detected,
        .mmio_enabled = qla2xxx_pci_mmio_enabled,
        .slot_reset = qla2xxx_pci_slot_reset,
        .resume = qla2xxx_pci_resume,
};

static struct pci_device_id qla2xxx_pci_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8432) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) },
        { 0 },
};
MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);

static struct pci_driver qla2xxx_pci_driver = {
        .name                = QLA2XXX_DRIVER_NAME,
        .driver                = {
                .owner                = THIS_MODULE,
        },
        .id_table        = qla2xxx_pci_tbl,
        .probe                = qla2x00_probe_one,
        .remove                = qla2x00_remove_one,
        .err_handler        = &qla2xxx_err_handler,
};

/**
 * qla2x00_module_init - Module initialization.
 **/
static int __init
qla2x00_module_init(void)
{
        int ret = 0;

        /* Allocate cache for SRBs. */
        srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
            SLAB_HWCACHE_ALIGN, 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 (ql2xextended_error_logging)
                strcat(qla2x00_version_str, "-debug");

        qla2xxx_transport_template =
            fc_attach_transport(&qla2xxx_transport_functions);
        if (!qla2xxx_transport_template) {
                kmem_cache_destroy(srb_cachep);
                return -ENODEV;
        }
        qla2xxx_transport_vport_template =
            fc_attach_transport(&qla2xxx_transport_vport_functions);
        if (!qla2xxx_transport_vport_template) {
                kmem_cache_destroy(srb_cachep);
                fc_release_transport(qla2xxx_transport_template);
                return -ENODEV;
        }

        printk(KERN_INFO "QLogic Fibre Channel HBA Driver: %s\n",
            qla2x00_version_str);
        ret = pci_register_driver(&qla2xxx_pci_driver);
        if (ret) {
                kmem_cache_destroy(srb_cachep);
                fc_release_transport(qla2xxx_transport_template);
                fc_release_transport(qla2xxx_transport_vport_template);
        }
        return ret;
}

/**
 * qla2x00_module_exit - Module cleanup.
 **/
static void __exit
qla2x00_module_exit(void)
{
        pci_unregister_driver(&qla2xxx_pci_driver);
        qla2x00_release_firmware();
        kmem_cache_destroy(srb_cachep);
        fc_release_transport(qla2xxx_transport_template);
        fc_release_transport(qla2xxx_transport_vport_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);
MODULE_FIRMWARE(FW_FILE_ISP21XX);
MODULE_FIRMWARE(FW_FILE_ISP22XX);
MODULE_FIRMWARE(FW_FILE_ISP2300);
MODULE_FIRMWARE(FW_FILE_ISP2322);
MODULE_FIRMWARE(FW_FILE_ISP24XX);
MODULE_FIRMWARE(FW_FILE_ISP25XX);