Logo Search packages:      
Sourcecode: linux-fsl-imx51 version File versions  Download package

qla_os.c

/*
 * 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 *);

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 ql2xqfulltracking = 1;
module_param(ql2xqfulltracking, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xqfulltracking,
            "Controls whether the driver tracks queue full status "
            "returns and dynamically adjusts a scsi device's queue "
            "depth.  Default is 1, perform tracking.  Set to 0 to "
            "disable dynamic tracking and adjustment of queue depth.");

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.");

int ql2xmaxqueues = 1;
module_param(ql2xmaxqueues, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xmaxqueues,
            "Enables MQ settings "
            "Default is 1 for single queue. Set it to number \
                  of queues in MQ mode.");

int ql2xmultique_tag;
module_param(ql2xmultique_tag, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xmultique_tag,
            "Enables CPU affinity settings for the driver "
            "Default is 0 for no affinity of request and response IO. "
            "Set it to 1 to turn on the cpu affinity.");

int ql2xfwloadbin;
module_param(ql2xfwloadbin, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xfwloadbin,
            "Option to specify location from which to load ISP firmware:\n"
            " 2 -- load firmware via the request_firmware() (hotplug)\n"
            "      interface.\n"
            " 1 -- load firmware from flash.\n"
            " 0 -- use default semantics.\n");

/*
 * 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 qla2xxx_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);

struct scsi_host_template qla2xxx_driver_template = {
      .module                 = THIS_MODULE,
      .name             = QLA2XXX_DRIVER_NAME,
      .queuecommand           = qla2xxx_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 *vha, void *func, unsigned long interval)
{
      init_timer(&vha->timer);
      vha->timer.expires = jiffies + interval * HZ;
      vha->timer.data = (unsigned long)vha;
      vha->timer.function = (void (*)(unsigned long))func;
      add_timer(&vha->timer);
      vha->timer_active = 1;
}

static inline void
qla2x00_restart_timer(scsi_qla_host_t *vha, unsigned long interval)
{
      mod_timer(&vha->timer, jiffies + interval * HZ);
}

static __inline__ void
qla2x00_stop_timer(scsi_qla_host_t *vha)
{
      del_timer_sync(&vha->timer);
      vha->timer_active = 0;
}

static int qla2x00_do_dpc(void *data);

static void qla2x00_rst_aen(scsi_qla_host_t *);

static int qla2x00_mem_alloc(struct qla_hw_data *, uint16_t, uint16_t,
      struct req_que **, struct rsp_que **);
static void qla2x00_mem_free(struct qla_hw_data *);
static void qla2x00_sp_free_dma(srb_t *);

/* -------------------------------------------------------------------------- */
static int qla2x00_alloc_queues(struct qla_hw_data *ha)
{
      ha->req_q_map = kzalloc(sizeof(struct req_que *) * ha->max_req_queues,
                        GFP_KERNEL);
      if (!ha->req_q_map) {
            qla_printk(KERN_WARNING, ha,
                  "Unable to allocate memory for request queue ptrs\n");
            goto fail_req_map;
      }

      ha->rsp_q_map = kzalloc(sizeof(struct rsp_que *) * ha->max_rsp_queues,
                        GFP_KERNEL);
      if (!ha->rsp_q_map) {
            qla_printk(KERN_WARNING, ha,
                  "Unable to allocate memory for response queue ptrs\n");
            goto fail_rsp_map;
      }
      set_bit(0, ha->rsp_qid_map);
      set_bit(0, ha->req_qid_map);
      return 1;

fail_rsp_map:
      kfree(ha->req_q_map);
      ha->req_q_map = NULL;
fail_req_map:
      return -ENOMEM;
}

static void qla2x00_free_req_que(struct qla_hw_data *ha, struct req_que *req)
{
      if (req && req->ring)
            dma_free_coherent(&ha->pdev->dev,
            (req->length + 1) * sizeof(request_t),
            req->ring, req->dma);

      kfree(req);
      req = NULL;
}

static void qla2x00_free_rsp_que(struct qla_hw_data *ha, struct rsp_que *rsp)
{
      if (rsp && rsp->ring)
            dma_free_coherent(&ha->pdev->dev,
            (rsp->length + 1) * sizeof(response_t),
            rsp->ring, rsp->dma);

      kfree(rsp);
      rsp = NULL;
}

static void qla2x00_free_queues(struct qla_hw_data *ha)
{
      struct req_que *req;
      struct rsp_que *rsp;
      int cnt;

      for (cnt = 0; cnt < ha->max_req_queues; cnt++) {
            req = ha->req_q_map[cnt];
            qla2x00_free_req_que(ha, req);
      }
      kfree(ha->req_q_map);
      ha->req_q_map = NULL;

      for (cnt = 0; cnt < ha->max_rsp_queues; cnt++) {
            rsp = ha->rsp_q_map[cnt];
            qla2x00_free_rsp_que(ha, rsp);
      }
      kfree(ha->rsp_q_map);
      ha->rsp_q_map = NULL;
}

static int qla25xx_setup_mode(struct scsi_qla_host *vha)
{
      uint16_t options = 0;
      int ques, req, ret;
      struct qla_hw_data *ha = vha->hw;

      if (ql2xmultique_tag) {
            /* CPU affinity mode */
            ha->wq = create_workqueue("qla2xxx_wq");
            /* create a request queue for IO */
            options |= BIT_7;
            req = qla25xx_create_req_que(ha, options, 0, 0, -1,
                  QLA_DEFAULT_QUE_QOS);
            if (!req) {
                  qla_printk(KERN_WARNING, ha,
                        "Can't create request queue\n");
                  goto fail;
            }
            vha->req = ha->req_q_map[req];
            options |= BIT_1;
            for (ques = 1; ques < ha->max_rsp_queues; ques++) {
                  ret = qla25xx_create_rsp_que(ha, options, 0, 0, req);
                  if (!ret) {
                        qla_printk(KERN_WARNING, ha,
                              "Response Queue create failed\n");
                        goto fail2;
                  }
            }
            DEBUG2(qla_printk(KERN_INFO, ha,
                  "CPU affinity mode enabled, no. of response"
                  " queues:%d, no. of request queues:%d\n",
                  ha->max_rsp_queues, ha->max_req_queues));
      }
      return 0;
fail2:
      qla25xx_delete_queues(vha);
fail:
      ha->mqenable = 0;
      return 1;
}

static char *
qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str)
{
      struct qla_hw_data *ha = vha->hw;
      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 *vha, char *str)
{
      static char *pci_bus_modes[] = { "33", "66", "100", "133", };
      struct qla_hw_data *ha = vha->hw;
      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 *vha, char *str)
{
      char un_str[10];
      struct qla_hw_data *ha = vha->hw;

      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 *vha, char *str)
{
      struct qla_hw_data *ha = vha->hw;

      sprintf(str, "%d.%02d.%02d (%x)", ha->fw_major_version,
          ha->fw_minor_version, ha->fw_subminor_version, ha->fw_attributes);
      return str;
}

static inline srb_t *
qla2x00_get_new_sp(scsi_qla_host_t *vha, fc_port_t *fcport,
    struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
{
      srb_t *sp;
      struct qla_hw_data *ha = vha->hw;

      sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
      if (!sp)
            return sp;

      sp->fcport = fcport;
      sp->cmd = cmd;
      sp->flags = 0;
      CMD_SP(cmd) = (void *)sp;
      cmd->scsi_done = done;

      return sp;
}

static int
qla2xxx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
{
      scsi_qla_host_t *vha = 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));
      struct qla_hw_data *ha = vha->hw;
      struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
      srb_t *sp;
      int rval;

      if (unlikely(pci_channel_offline(ha->pdev))) {
            if (ha->pdev->error_state == pci_channel_io_frozen)
                  cmd->result = DID_REQUEUE << 16;
            else
                  cmd->result = DID_NO_CONNECT << 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(&base_vha->loop_state) == LOOP_DEAD) {
                  cmd->result = DID_NO_CONNECT << 16;
                  goto qc24_fail_command;
            }
            goto qc24_target_busy;
      }

      spin_unlock_irq(vha->host->host_lock);

      sp = qla2x00_get_new_sp(base_vha, fcport, cmd, done);
      if (!sp)
            goto qc24_host_busy_lock;

      rval = ha->isp_ops->start_scsi(sp);
      if (rval != QLA_SUCCESS)
            goto qc24_host_busy_free_sp;

      spin_lock_irq(vha->host->host_lock);

      return 0;

qc24_host_busy_free_sp:
      qla2x00_sp_free_dma(sp);
      mempool_free(sp, ha->srb_mempool);

qc24_host_busy_lock:
      spin_lock_irq(vha->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:
 *    cmd = Scsi Command to wait on.
 *
 * Return:
 *    Not Found : 0
 *    Found : 1
 */
static int
qla2x00_eh_wait_on_command(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 *vha)
{
      int         return_status;
      unsigned long     wait_online;
      struct qla_hw_data *ha = vha->hw;
      scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

      wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
      while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
          test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
          test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
          ha->dpc_active) && time_before(jiffies, wait_online)) {

            msleep(1000);
      }
      if (base_vha->flags.online)
            return_status = QLA_SUCCESS;
      else
            return_status = QLA_FUNCTION_FAILED;

      return (return_status);
}

int
qla2x00_wait_for_chip_reset(scsi_qla_host_t *vha)
{
      int         return_status;
      unsigned long     wait_reset;
      struct qla_hw_data *ha = vha->hw;
      scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

      wait_reset = jiffies + (MAX_LOOP_TIMEOUT * HZ);
      while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
          test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
          test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
          ha->dpc_active) && time_before(jiffies, wait_reset)) {

            msleep(1000);

            if (!test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) &&
                ha->flags.chip_reset_done)
                  break;
      }
      if (ha->flags.chip_reset_done)
            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 *vha)
{
      int    return_status = QLA_SUCCESS;
      unsigned long loop_timeout ;
      struct qla_hw_data *ha = vha->hw;
      scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

      /* wait for 5 min at the max for loop to be ready */
      loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);

      while ((!atomic_read(&base_vha->loop_down_timer) &&
          atomic_read(&base_vha->loop_state) == LOOP_DOWN) ||
          atomic_read(&base_vha->loop_state) != LOOP_READY) {
            if (atomic_read(&base_vha->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 *vha = fcport->vha;
      struct qla_hw_data *ha = vha->hw;
      struct req_que *req;

      spin_lock_irqsave(&ha->hardware_lock, flags);
      req = vha->req;
      for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
            sp = req->outstanding_cmds[cnt];
            if (!sp)
                  continue;
            if (sp->fcport != fcport)
                  continue;

            spin_unlock_irqrestore(&ha->hardware_lock, flags);
            if (ha->isp_ops->abort_command(sp)) {
                  DEBUG2(qla_printk(KERN_WARNING, ha,
                  "Abort failed --  %lx\n",
                  sp->cmd->serial_number));
            } else {
                  if (qla2x00_eh_wait_on_command(sp->cmd) !=
                        QLA_SUCCESS)
                        DEBUG2(qla_printk(KERN_WARNING, ha,
                        "Abort failed while waiting --  %lx\n",
                        sp->cmd->serial_number));
            }
            spin_lock_irqsave(&ha->hardware_lock, flags);
      }
      spin_unlock_irqrestore(&ha->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 *vha = shost_priv(cmd->device->host);
      srb_t *sp;
      int ret, i;
      unsigned int id, lun;
      unsigned long serial;
      unsigned long flags;
      int wait = 0;
      struct qla_hw_data *ha = vha->hw;
      struct req_que *req = vha->req;
      srb_t *spt;

      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;
      spt = (srb_t *) CMD_SP(cmd);
      if (!spt)
            return SUCCESS;

      /* Check active list for command command. */
      spin_lock_irqsave(&ha->hardware_lock, flags);
      for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
            sp = req->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__, vha->host_no, sp, serial));

            spin_unlock_irqrestore(&ha->hardware_lock, flags);
            if (ha->isp_ops->abort_command(sp)) {
                  DEBUG2(printk("%s(%ld): abort_command "
                  "mbx failed.\n", __func__, vha->host_no));
                  ret = FAILED;
            } else {
                  DEBUG3(printk("%s(%ld): abort_command "
                  "mbx success.\n", __func__, vha->host_no));
                  wait = 1;
            }
            spin_lock_irqsave(&ha->hardware_lock, flags);
            break;
      }
      spin_unlock_irqrestore(&ha->hardware_lock, flags);

      /* Wait for the command to be returned. */
      if (wait) {
            if (qla2x00_eh_wait_on_command(cmd) != QLA_SUCCESS) {
                  qla_printk(KERN_ERR, ha,
                      "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
                      "%x.\n", vha->host_no, id, lun, serial, ret);
                  ret = FAILED;
            }
      }

      qla_printk(KERN_INFO, ha,
          "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
          vha->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 *vha, unsigned int t,
      unsigned int l, srb_t *sp, enum nexus_wait_type type)
{
      int cnt, match, status;
      unsigned long flags;
      struct qla_hw_data *ha = vha->hw;
      struct req_que *req;

      status = QLA_SUCCESS;
      if (!sp)
            return status;

      spin_lock_irqsave(&ha->hardware_lock, flags);
      req = vha->req;
      for (cnt = 1; status == QLA_SUCCESS &&
            cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
            sp = req->outstanding_cmds[cnt];
            if (!sp)
                  continue;

            if (vha->vp_idx != sp->fcport->vha->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(&ha->hardware_lock, flags);
            status = qla2x00_eh_wait_on_command(sp->cmd);
            spin_lock_irqsave(&ha->hardware_lock, flags);
      }
      spin_unlock_irqrestore(&ha->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, int))
{
      scsi_qla_host_t *vha = 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, vha->hw, "scsi(%ld:%d:%d): %s RESET ISSUED.\n",
          vha->host_no, cmd->device->id, cmd->device->lun, name);

      err = 0;
      if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
            goto eh_reset_failed;
      err = 1;
      if (qla2x00_wait_for_loop_ready(vha) != QLA_SUCCESS)
            goto eh_reset_failed;
      err = 2;
      if (do_reset(fcport, cmd->device->lun, cmd->request->cpu + 1)
            != QLA_SUCCESS)
            goto eh_reset_failed;
      err = 3;
      if (qla2x00_eh_wait_for_pending_commands(vha, cmd->device->id,
          cmd->device->lun, (srb_t *) CMD_SP(cmd), type) != QLA_SUCCESS)
            goto eh_reset_failed;

      qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET SUCCEEDED.\n",
          vha->host_no, cmd->device->id, cmd->device->lun, name);

      return SUCCESS;

 eh_reset_failed:
      qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET FAILED: %s.\n"
          , vha->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 *vha = shost_priv(cmd->device->host);
      struct qla_hw_data *ha = vha->hw;

      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 *vha = shost_priv(cmd->device->host);
      struct qla_hw_data *ha = vha->hw;

      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 *vha = 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;
      srb_t *sp = (srb_t *) CMD_SP(cmd);

      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, vha->hw,
          "scsi(%ld:%d:%d): BUS RESET ISSUED.\n", vha->host_no, id, lun);

      if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) {
            DEBUG2(printk("%s failed:board disabled\n",__func__));
            goto eh_bus_reset_done;
      }

      if (qla2x00_wait_for_loop_ready(vha) == QLA_SUCCESS) {
            if (qla2x00_loop_reset(vha) == QLA_SUCCESS)
                  ret = SUCCESS;
      }
      if (ret == FAILED)
            goto eh_bus_reset_done;

      /* Flush outstanding commands. */
      if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, sp, WAIT_HOST) !=
          QLA_SUCCESS)
            ret = FAILED;

eh_bus_reset_done:
      qla_printk(KERN_INFO, vha->hw, "%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 *vha = shost_priv(cmd->device->host);
      fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
      struct qla_hw_data *ha = vha->hw;
      int ret = FAILED;
      unsigned int id, lun;
      unsigned long serial;
      srb_t *sp = (srb_t *) CMD_SP(cmd);
      scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

      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", vha->host_no, id, lun);

      if (qla2x00_wait_for_hba_online(vha) != 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(vha);
      if (vha != base_vha) {
            if (qla2x00_vp_abort_isp(vha))
                  goto eh_host_reset_lock;
      } else {
            if (ha->wq)
                  flush_workqueue(ha->wq);

            set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
            if (qla2x00_abort_isp(base_vha)) {
                  clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
                  /* failed. schedule dpc to try */
                  set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);

                  if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
                        goto eh_host_reset_lock;
            }
            clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
      }

      /* Waiting for command to be returned to OS.*/
      if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, sp, WAIT_HOST) ==
            QLA_SUCCESS)
            ret = SUCCESS;

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 *vha)
{
      int ret;
      struct fc_port *fcport;
      struct qla_hw_data *ha = vha->hw;

      if (ha->flags.enable_lip_full_login && !vha->vp_idx &&
          !IS_QLA81XX(ha)) {
            ret = qla2x00_full_login_lip(vha);
            if (ret != QLA_SUCCESS) {
                  DEBUG2_3(printk("%s(%ld): failed: "
                      "full_login_lip=%d.\n", __func__, vha->host_no,
                      ret));
            }
            atomic_set(&vha->loop_state, LOOP_DOWN);
            atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
            qla2x00_mark_all_devices_lost(vha, 0);
            qla2x00_wait_for_loop_ready(vha);
      }

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

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

                  ret = ha->isp_ops->target_reset(fcport, 0, 0);
                  if (ret != QLA_SUCCESS) {
                        DEBUG2_3(printk("%s(%ld): bus_reset failed: "
                            "target_reset=%d d_id=%x.\n", __func__,
                            vha->host_no, ret, fcport->d_id.b24));
                  }
            }
      }
      /* Issue marker command only when we are going to start the I/O */
      vha->marker_needed = 1;

      return QLA_SUCCESS;
}

void
qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
{
      int que, cnt;
      unsigned long flags;
      srb_t *sp;
      struct qla_hw_data *ha = vha->hw;
      struct req_que *req;

      spin_lock_irqsave(&ha->hardware_lock, flags);
      for (que = 0; que < ha->max_req_queues; que++) {
            req = ha->req_q_map[que];
            if (!req)
                  continue;
            for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
                  sp = req->outstanding_cmds[cnt];
                  if (sp) {
                        req->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 *vha = shost_priv(sdev->host);
      struct qla_hw_data *ha = vha->hw;
      struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
      struct req_que *req = vha->req;

      if (sdev->tagged_supported)
            scsi_activate_tcq(sdev, req->max_q_depth);
      else
            scsi_deactivate_tcq(sdev, req->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(struct qla_hw_data *ha)
{
      /* Assume a 32bit DMA mask. */
      ha->flags.enable_64bit_addressing = 0;

      if (!dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(64))) {
            /* Any upper-dword bits set? */
            if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
                !pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
                  /* 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_BIT_MASK(32));
      pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(32));
}

static void
qla2x00_enable_intrs(struct qla_hw_data *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(struct qla_hw_data *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(struct qla_hw_data *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(struct qla_hw_data *ha)
{
      unsigned long flags = 0;
      struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

      if (IS_NOPOLLING_TYPE(ha))
            return;
      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,
      .start_scsi       = qla2x00_start_scsi,
};

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,
      .start_scsi       = qla2x00_start_scsi,
};

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,
      .start_scsi       = qla24xx_start_scsi,
};

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,
      .start_scsi       = qla24xx_start_scsi,
};

static struct isp_operations qla81xx_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           = qla81xx_nvram_config,
      .update_fw_options      = qla81xx_update_fw_options,
      .load_risc        = qla81xx_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       = NULL,
      .write_nvram            = NULL,
      .fw_dump          = qla81xx_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,
      .start_scsi       = qla24xx_start_scsi,
};

static inline void
qla2x00_set_isp_flags(struct qla_hw_data *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;
      case PCI_DEVICE_ID_QLOGIC_ISP8001:
            ha->device_type |= DT_ISP8001;
            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;
      }

      /* Get adapter physical port no from interrupt pin register. */
      pci_read_config_byte(ha->pdev, PCI_INTERRUPT_PIN, &ha->port_no);
      if (ha->port_no & 1)
            ha->flags.port0 = 1;
      else
            ha->flags.port0 = 0;
}

static int
qla2x00_iospace_config(struct qla_hw_data *ha)
{
      resource_size_t pio;
      uint16_t msix;
      int cpus;

      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;
      }

      /* Determine queue resources */
      ha->max_req_queues = ha->max_rsp_queues = 1;
      if ((ql2xmaxqueues <= 1 || ql2xmultique_tag < 1) &&
            (!IS_QLA25XX(ha) && !IS_QLA81XX(ha)))
            goto mqiobase_exit;
      ha->mqiobase = ioremap(pci_resource_start(ha->pdev, 3),
                  pci_resource_len(ha->pdev, 3));
      if (ha->mqiobase) {
            /* Read MSIX vector size of the board */
            pci_read_config_word(ha->pdev, QLA_PCI_MSIX_CONTROL, &msix);
            ha->msix_count = msix;
            /* Max queues are bounded by available msix vectors */
            /* queue 0 uses two msix vectors */
            if (ql2xmultique_tag) {
                  cpus = num_online_cpus();
                  ha->max_rsp_queues = (ha->msix_count - 1 > cpus) ?
                        (cpus + 1) : (ha->msix_count - 1);
                  ha->max_req_queues = 2;
            } else if (ql2xmaxqueues > 1) {
                  ha->max_req_queues = ql2xmaxqueues > QLA_MQ_SIZE ?
                                    QLA_MQ_SIZE : ql2xmaxqueues;
                  DEBUG2(qla_printk(KERN_INFO, ha, "QoS mode set, max no"
                  " of request queues:%d\n", ha->max_req_queues));
            }
            qla_printk(KERN_INFO, ha,
                  "MSI-X vector count: %d\n", msix);
      } else
            qla_printk(KERN_INFO, ha, "BAR 3 not enabled\n");

mqiobase_exit:
      ha->msix_count = ha->max_rsp_queues + 1;
      return (0);

iospace_error_exit:
      return (-ENOMEM);
}

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

      if (vha->hw->flags.running_gold_fw)
            return;

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

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

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

      return atomic_read(&vha->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 *base_vha = NULL;
      struct qla_hw_data *ha;
      char pci_info[30];
      char fw_str[30];
      struct scsi_host_template *sht;
      int bars, max_id, mem_only = 0;
      uint16_t req_length = 0, rsp_length = 0;
      struct req_que *req = NULL;
      struct rsp_que *rsp = NULL;

      bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
      sht = &qla2xxx_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 ||
          pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8001) {
            bars = pci_select_bars(pdev, IORESOURCE_MEM);
            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);

      ha = kzalloc(sizeof(struct qla_hw_data), GFP_KERNEL);
      if (!ha) {
            DEBUG(printk("Unable to allocate memory for ha\n"));
            goto probe_out;
      }
      ha->pdev = pdev;

      /* Clear our data area */
      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_hw_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->link_data_rate = PORT_SPEED_UNKNOWN;
      ha->optrom_size = OPTROM_SIZE_2300;

      /* Assign ISP specific operations. */
      max_id = MAX_TARGETS_2200;
      if (IS_QLA2100(ha)) {
            max_id = MAX_TARGETS_2100;
            ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
            req_length = REQUEST_ENTRY_CNT_2100;
            rsp_length = RESPONSE_ENTRY_CNT_2100;
            ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
            ha->gid_list_info_size = 4;
            ha->flash_conf_off = ~0;
            ha->flash_data_off = ~0;
            ha->nvram_conf_off = ~0;
            ha->nvram_data_off = ~0;
            ha->isp_ops = &qla2100_isp_ops;
      } else if (IS_QLA2200(ha)) {
            ha->mbx_count = MAILBOX_REGISTER_COUNT;
            req_length = REQUEST_ENTRY_CNT_2200;
            rsp_length = RESPONSE_ENTRY_CNT_2100;
            ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
            ha->gid_list_info_size = 4;
            ha->flash_conf_off = ~0;
            ha->flash_data_off = ~0;
            ha->nvram_conf_off = ~0;
            ha->nvram_data_off = ~0;
            ha->isp_ops = &qla2100_isp_ops;
      } else if (IS_QLA23XX(ha)) {
            ha->mbx_count = MAILBOX_REGISTER_COUNT;
            req_length = REQUEST_ENTRY_CNT_2200;
            rsp_length = RESPONSE_ENTRY_CNT_2300;
            ha->max_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->flash_conf_off = ~0;
            ha->flash_data_off = ~0;
            ha->nvram_conf_off = ~0;
            ha->nvram_data_off = ~0;
            ha->isp_ops = &qla2300_isp_ops;
      } else if (IS_QLA24XX_TYPE(ha)) {
            ha->mbx_count = MAILBOX_REGISTER_COUNT;
            req_length = REQUEST_ENTRY_CNT_24XX;
            rsp_length = RESPONSE_ENTRY_CNT_2300;
            ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
            ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
            ha->gid_list_info_size = 8;
            ha->optrom_size = OPTROM_SIZE_24XX;
            ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA24XX;
            ha->isp_ops = &qla24xx_isp_ops;
            ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
            ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
            ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
            ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
      } else if (IS_QLA25XX(ha)) {
            ha->mbx_count = MAILBOX_REGISTER_COUNT;
            req_length = REQUEST_ENTRY_CNT_24XX;
            rsp_length = RESPONSE_ENTRY_CNT_2300;
            ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
            ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
            ha->gid_list_info_size = 8;
            ha->optrom_size = OPTROM_SIZE_25XX;
            ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
            ha->isp_ops = &qla25xx_isp_ops;
            ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
            ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
            ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
            ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
      } else if (IS_QLA81XX(ha)) {
            ha->mbx_count = MAILBOX_REGISTER_COUNT;
            req_length = REQUEST_ENTRY_CNT_24XX;
            rsp_length = RESPONSE_ENTRY_CNT_2300;
            ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
            ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
            ha->gid_list_info_size = 8;
            ha->optrom_size = OPTROM_SIZE_81XX;
            ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
            ha->isp_ops = &qla81xx_isp_ops;
            ha->flash_conf_off = FARX_ACCESS_FLASH_CONF_81XX;
            ha->flash_data_off = FARX_ACCESS_FLASH_DATA_81XX;
            ha->nvram_conf_off = ~0;
            ha->nvram_data_off = ~0;
      }

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

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

      qla2x00_config_dma_addressing(ha);
      ret = qla2x00_mem_alloc(ha, req_length, rsp_length, &req, &rsp);
      if (!ret) {
            qla_printk(KERN_WARNING, ha,
                "[ERROR] Failed to allocate memory for adapter\n");

            goto probe_hw_failed;
      }

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


      base_vha = qla2x00_create_host(sht, ha);
      if (!base_vha) {
            qla_printk(KERN_WARNING, ha,
                "[ERROR] Failed to allocate memory for scsi_host\n");

            ret = -ENOMEM;
            qla2x00_mem_free(ha);
            qla2x00_free_req_que(ha, req);
            qla2x00_free_rsp_que(ha, rsp);
            goto probe_hw_failed;
      }

      pci_set_drvdata(pdev, base_vha);

      host = base_vha->host;
      base_vha->req = req;
      host->can_queue = req->length + 128;
      if (IS_QLA2XXX_MIDTYPE(ha))
            base_vha->mgmt_svr_loop_id = 10 + base_vha->vp_idx;
      else
            base_vha->mgmt_svr_loop_id = MANAGEMENT_SERVER +
                                    base_vha->vp_idx;
      if (IS_QLA2100(ha))
            host->sg_tablesize = 32;
      host->max_id = max_id;
      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;

      /* Set up the irqs */
      ret = qla2x00_request_irqs(ha, rsp);
      if (ret)
            goto probe_init_failed;
      /* Alloc arrays of request and response ring ptrs */
      if (!qla2x00_alloc_queues(ha)) {
            qla_printk(KERN_WARNING, ha,
            "[ERROR] Failed to allocate memory for queue"
            " pointers\n");
            goto probe_init_failed;
      }
      ha->rsp_q_map[0] = rsp;
      ha->req_q_map[0] = req;
      rsp->req = req;
      req->rsp = rsp;
      set_bit(0, ha->req_qid_map);
      set_bit(0, ha->rsp_qid_map);
      /* FWI2-capable only. */
      req->req_q_in = &ha->iobase->isp24.req_q_in;
      req->req_q_out = &ha->iobase->isp24.req_q_out;
      rsp->rsp_q_in = &ha->iobase->isp24.rsp_q_in;
      rsp->rsp_q_out = &ha->iobase->isp24.rsp_q_out;
      if (ha->mqenable) {
            req->req_q_in = &ha->mqiobase->isp25mq.req_q_in;
            req->req_q_out = &ha->mqiobase->isp25mq.req_q_out;
            rsp->rsp_q_in = &ha->mqiobase->isp25mq.rsp_q_in;
            rsp->rsp_q_out =  &ha->mqiobase->isp25mq.rsp_q_out;
      }

      if (qla2x00_initialize_adapter(base_vha)) {
            qla_printk(KERN_WARNING, ha,
                "Failed to initialize adapter\n");

            DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
                "Adapter flags %x.\n",
                base_vha->host_no, base_vha->device_flags));

            ret = -ENODEV;
            goto probe_failed;
      }

      if (ha->mqenable)
            if (qla25xx_setup_mode(base_vha))
                  qla_printk(KERN_WARNING, ha,
                        "Can't create queues, falling back to single"
                        " queue mode\n");

      if (ha->flags.running_gold_fw)
            goto skip_dpc;

      /*
       * Startup the kernel thread for this host adapter
       */
      ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
                  "%s_dpc", base_vha->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;
      }

skip_dpc:
      list_add_tail(&base_vha->list, &ha->vp_list);
      base_vha->host->irq = ha->pdev->irq;

      /* Initialized the timer */
      qla2x00_start_timer(base_vha, qla2x00_timer, WATCH_INTERVAL);

      DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
          base_vha->host_no, ha));

      base_vha->flags.init_done = 1;
      base_vha->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(base_vha);

      qla2x00_init_host_attr(base_vha);

      qla2x00_dfs_setup(base_vha);

      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(base_vha, pci_info), pci_name(pdev),
          ha->flags.enable_64bit_addressing ? '+' : '-', base_vha->host_no,
          ha->isp_ops->fw_version_str(base_vha, fw_str));

      return 0;

probe_init_failed:
      qla2x00_free_req_que(ha, req);
      qla2x00_free_rsp_que(ha, rsp);
      ha->max_req_queues = ha->max_rsp_queues = 0;

probe_failed:
      if (base_vha->timer_active)
            qla2x00_stop_timer(base_vha);
      base_vha->flags.online = 0;
      if (ha->dpc_thread) {
            struct task_struct *t = ha->dpc_thread;

            ha->dpc_thread = NULL;
            kthread_stop(t);
      }

      qla2x00_free_device(base_vha);

      scsi_host_put(base_vha->host);

probe_hw_failed:
      if (ha->iobase)
            iounmap(ha->iobase);

      pci_release_selected_regions(ha->pdev, ha->bars);
      kfree(ha);
      ha = NULL;

probe_out:
      pci_disable_device(pdev);
      return ret;
}

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

      base_vha = pci_get_drvdata(pdev);
      ha = base_vha->hw;

      list_for_each_entry_safe(vha, temp, &ha->vp_list, list) {
            if (vha && vha->fc_vport)
                  fc_vport_terminate(vha->fc_vport);
      }

      set_bit(UNLOADING, &base_vha->dpc_flags);

      qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);

      qla2x00_dfs_remove(base_vha);

      qla84xx_put_chip(base_vha);

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

      base_vha->flags.online = 0;

      /* Flush the work queue and remove it */
      if (ha->wq) {
            flush_workqueue(ha->wq);
            destroy_workqueue(ha->wq);
            ha->wq = NULL;
      }

      /* 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);
      }

      qla2x00_free_sysfs_attr(base_vha);

      fc_remove_host(base_vha->host);

      scsi_remove_host(base_vha->host);

      qla2x00_free_device(base_vha);

      scsi_host_put(base_vha->host);

      if (ha->iobase)
            iounmap(ha->iobase);

      if (ha->mqiobase)
            iounmap(ha->mqiobase);

      pci_release_selected_regions(ha->pdev, ha->bars);
      kfree(ha);
      ha = NULL;

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

static void
qla2x00_free_device(scsi_qla_host_t *vha)
{
      struct qla_hw_data *ha = vha->hw;

      qla25xx_delete_queues(vha);

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

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

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

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

      qla2x00_free_irqs(vha);

      qla2x00_mem_free(ha);

      qla2x00_free_queues(ha);
}

static inline void
qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
    int defer)
{
      struct fc_rport *rport;

      if (!fcport->rport)
            return;

      rport = fcport->rport;
      if (defer) {
            spin_lock_irq(vha->host->host_lock);
            fcport->drport = rport;
            spin_unlock_irq(vha->host->host_lock);
            set_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
            qla2xxx_wake_dpc(vha);
      } 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 *vha, fc_port_t *fcport,
    int do_login, int defer)
{
      if (atomic_read(&fcport->state) == FCS_ONLINE &&
          vha->vp_idx == fcport->vp_idx) {
            atomic_set(&fcport->state, FCS_DEVICE_LOST);
            qla2x00_schedule_rport_del(vha, 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 = vha->hw->login_retry_count;
            set_bit(RELOGIN_NEEDED, &vha->dpc_flags);

            DEBUG(printk("scsi(%ld): Port login retry: "
                "%02x%02x%02x%02x%02x%02x%02x%02x, "
                "id = 0x%04x retry cnt=%d\n",
                vha->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 *vha, int defer)
{
      fc_port_t *fcport;

      list_for_each_entry(fcport, &vha->vp_fcports, list) {
            if (vha->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) {
                  atomic_set(&fcport->state, FCS_DEVICE_LOST);
                  qla2x00_schedule_rport_del(vha, fcport, defer);
            } else
                  atomic_set(&fcport->state, FCS_DEVICE_LOST);
      }
}

/*
* qla2x00_mem_alloc
*      Allocates adapter memory.
*
* Returns:
*      0  = success.
*      !0  = failure.
*/
static int
qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
      struct req_que **req, struct rsp_que **rsp)
{
      char  name[16];

      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;

      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_init_cb;

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

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

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

      /* 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_dma_pool;
      } 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_dma_pool;
      /* 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;
      }

      /* Allocate memory for request ring */
      *req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
      if (!*req) {
            DEBUG(printk("Unable to allocate memory for req\n"));
            goto fail_req;
      }
      (*req)->length = req_len;
      (*req)->ring = dma_alloc_coherent(&ha->pdev->dev,
            ((*req)->length + 1) * sizeof(request_t),
            &(*req)->dma, GFP_KERNEL);
      if (!(*req)->ring) {
            DEBUG(printk("Unable to allocate memory for req_ring\n"));
            goto fail_req_ring;
      }
      /* Allocate memory for response ring */
      *rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
      if (!*rsp) {
            qla_printk(KERN_WARNING, ha,
                  "Unable to allocate memory for rsp\n");
            goto fail_rsp;
      }
      (*rsp)->hw = ha;
      (*rsp)->length = rsp_len;
      (*rsp)->ring = dma_alloc_coherent(&ha->pdev->dev,
            ((*rsp)->length + 1) * sizeof(response_t),
            &(*rsp)->dma, GFP_KERNEL);
      if (!(*rsp)->ring) {
            qla_printk(KERN_WARNING, ha,
                  "Unable to allocate memory for rsp_ring\n");
            goto fail_rsp_ring;
      }
      (*req)->rsp = *rsp;
      (*rsp)->req = *req;
      /* Allocate memory for NVRAM data for vports */
      if (ha->nvram_npiv_size) {
            ha->npiv_info = kzalloc(sizeof(struct qla_npiv_entry) *
                              ha->nvram_npiv_size, GFP_KERNEL);
            if (!ha->npiv_info) {
                  qla_printk(KERN_WARNING, ha,
                        "Unable to allocate memory for npiv info\n");
                  goto fail_npiv_info;
            }
      } else
            ha->npiv_info = NULL;

      /* Get consistent memory allocated for EX-INIT-CB. */
      if (IS_QLA81XX(ha)) {
            ha->ex_init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
                &ha->ex_init_cb_dma);
            if (!ha->ex_init_cb)
                  goto fail_ex_init_cb;
      }

      INIT_LIST_HEAD(&ha->vp_list);
      return 1;

fail_ex_init_cb:
      kfree(ha->npiv_info);
fail_npiv_info:
      dma_free_coherent(&ha->pdev->dev, ((*rsp)->length + 1) *
            sizeof(response_t), (*rsp)->ring, (*rsp)->dma);
      (*rsp)->ring = NULL;
      (*rsp)->dma = 0;
fail_rsp_ring:
      kfree(*rsp);
fail_rsp:
      dma_free_coherent(&ha->pdev->dev, ((*req)->length + 1) *
            sizeof(request_t), (*req)->ring, (*req)->dma);
      (*req)->ring = NULL;
      (*req)->dma = 0;
fail_req_ring:
      kfree(*req);
fail_req:
      dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
            ha->ct_sns, ha->ct_sns_dma);
      ha->ct_sns = NULL;
      ha->ct_sns_dma = 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_dma_pool:
      dma_pool_destroy(ha->s_dma_pool);
      ha->s_dma_pool = NULL;
fail_free_nvram:
      kfree(ha->nvram);
      ha->nvram = NULL;
fail_free_srb_mempool:
      mempool_destroy(ha->srb_mempool);
      ha->srb_mempool = NULL;
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_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:
      DEBUG(printk("%s: Memory allocation failure\n", __func__));
      return -ENOMEM;
}

/*
* qla2x00_mem_free
*      Frees all adapter allocated memory.
*
* Input:
*      ha = adapter block pointer.
*/
static void
qla2x00_mem_free(struct qla_hw_data *ha)
{
      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->dcbx_tlv)
            dma_free_coherent(&ha->pdev->dev, DCBX_TLV_DATA_SIZE,
                ha->dcbx_tlv, ha->dcbx_tlv_dma);

      if (ha->xgmac_data)
            dma_free_coherent(&ha->pdev->dev, XGMAC_DATA_SIZE,
                ha->xgmac_data, ha->xgmac_data_dma);

      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->edc_data)
            dma_pool_free(ha->s_dma_pool, ha->edc_data, ha->edc_data_dma);

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

      if (ha->ex_init_cb)
            dma_pool_free(ha->s_dma_pool, ha->ex_init_cb, ha->ex_init_cb_dma);

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

      if (ha->gid_list)
            dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
            ha->gid_list_dma);

      if (ha->init_cb)
            dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
            ha->init_cb, ha->init_cb_dma);
      vfree(ha->optrom_buffer);
      kfree(ha->nvram);
      kfree(ha->npiv_info);

      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->ex_init_cb = NULL;
      ha->ex_init_cb_dma = 0;

      ha->s_dma_pool = NULL;

      ha->gid_list = NULL;
      ha->gid_list_dma = 0;

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

struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
                                    struct qla_hw_data *ha)
{
      struct Scsi_Host *host;
      struct scsi_qla_host *vha = NULL;

      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 fail;
      }

      /* Clear our data area */
      vha = shost_priv(host);
      memset(vha, 0, sizeof(scsi_qla_host_t));

      vha->host = host;
      vha->host_no = host->host_no;
      vha->hw = ha;

      INIT_LIST_HEAD(&vha->vp_fcports);
      INIT_LIST_HEAD(&vha->work_list);
      INIT_LIST_HEAD(&vha->list);

      spin_lock_init(&vha->work_lock);

      sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
      return vha;

fail:
      return vha;
}

static struct qla_work_evt *
qla2x00_alloc_work(struct scsi_qla_host *vha, enum qla_work_type type)
{
      struct qla_work_evt *e;

      e = kzalloc(sizeof(struct qla_work_evt), GFP_ATOMIC);
      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 *vha, struct qla_work_evt *e)
{
      unsigned long flags;

      spin_lock_irqsave(&vha->work_lock, flags);
      list_add_tail(&e->list, &vha->work_list);
      spin_unlock_irqrestore(&vha->work_lock, flags);
      qla2xxx_wake_dpc(vha);

      return QLA_SUCCESS;
}

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

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

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

int
qla2x00_post_idc_ack_work(struct scsi_qla_host *vha, uint16_t *mb)
{
      struct qla_work_evt *e;

      e = qla2x00_alloc_work(vha, QLA_EVT_IDC_ACK);
      if (!e)
            return QLA_FUNCTION_FAILED;

      memcpy(e->u.idc_ack.mb, mb, QLA_IDC_ACK_REGS * sizeof(uint16_t));
      return qla2x00_post_work(vha, e);
}

static void
qla2x00_do_work(struct scsi_qla_host *vha)
{
      struct qla_work_evt *e, *tmp;
      unsigned long flags;
      LIST_HEAD(work);

      spin_lock_irqsave(&vha->work_lock, flags);
      list_splice_init(&vha->work_list, &work);
      spin_unlock_irqrestore(&vha->work_lock, flags);

      list_for_each_entry_safe(e, tmp, &work, list) {
            list_del_init(&e->list);

            switch (e->type) {
            case QLA_EVT_AEN:
                  fc_host_post_event(vha->host, fc_get_event_number(),
                      e->u.aen.code, e->u.aen.data);
                  break;
            case QLA_EVT_IDC_ACK:
                  qla81xx_idc_ack(vha, e->u.idc_ack.mb);
                  break;
            }
            if (e->flags & QLA_EVT_FLAG_FREE)
                  kfree(e);
      }
}

/* Relogins all the fcports of a vport
 * Context: dpc thread
 */
void qla2x00_relogin(struct scsi_qla_host *vha)
{
      fc_port_t       *fcport;
      int status;
      uint16_t        next_loopid = 0;
      struct qla_hw_data *ha = vha->hw;

      list_for_each_entry(fcport, &vha->vp_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(vha,
                                          fcport->loop_id,
                                          fcport->d_id.b.domain,
                                          fcport->d_id.b.area,
                                          fcport->d_id.b.al_pa);

                        status = qla2x00_fabric_login(vha, fcport,
                                          &next_loopid);
                  } else
                        status = qla2x00_local_device_login(vha,
                                                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", vha->host_no, fcport->loop_id));

                        qla2x00_update_fcport(vha, fcport);

                  } else if (status == 1) {
                        set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
                        /* retry the login again */
                        DEBUG(printk("scsi(%ld): Retrying"
                        " %d login again loop_id 0x%x\n",
                        vha->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, &vha->dpc_flags))
                  break;
      }
}

/**************************************************************************
* 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 *base_vha;
      struct qla_hw_data *ha;

      ha = (struct qla_hw_data *)data;
      base_vha = pci_get_drvdata(ha->pdev);

      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 (!base_vha->flags.init_done)
                  continue;

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

            ha->dpc_active = 1;

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

            qla2x00_do_work(base_vha);

            if (test_and_clear_bit(ISP_ABORT_NEEDED,
                                    &base_vha->dpc_flags)) {

                  DEBUG(printk("scsi(%ld): dpc: sched "
                      "qla2x00_abort_isp ha = %p\n",
                      base_vha->host_no, ha));
                  if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
                      &base_vha->dpc_flags))) {

                        if (qla2x00_abort_isp(base_vha)) {
                              /* failed. retry later */
                              set_bit(ISP_ABORT_NEEDED,
                                  &base_vha->dpc_flags);
                        }
                        clear_bit(ABORT_ISP_ACTIVE,
                                    &base_vha->dpc_flags);
                  }

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

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

            if (test_and_clear_bit(RESET_MARKER_NEEDED,
                                          &base_vha->dpc_flags) &&
                (!(test_and_set_bit(RESET_ACTIVE, &base_vha->dpc_flags)))) {

                  DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
                      base_vha->host_no));

                  qla2x00_rst_aen(base_vha);
                  clear_bit(RESET_ACTIVE, &base_vha->dpc_flags);
            }

            /* Retry each device up to login retry count */
            if ((test_and_clear_bit(RELOGIN_NEEDED,
                                    &base_vha->dpc_flags)) &&
                !test_bit(LOOP_RESYNC_NEEDED, &base_vha->dpc_flags) &&
                atomic_read(&base_vha->loop_state) != LOOP_DOWN) {

                  DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
                              base_vha->host_no));
                  qla2x00_relogin(base_vha);

                  DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
                      base_vha->host_no));
            }

            if (test_and_clear_bit(LOOP_RESYNC_NEEDED,
                                          &base_vha->dpc_flags)) {

                  DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
                        base_vha->host_no));

                  if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
                      &base_vha->dpc_flags))) {

                        rval = qla2x00_loop_resync(base_vha);

                        clear_bit(LOOP_RESYNC_ACTIVE,
                                    &base_vha->dpc_flags);
                  }

                  DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
                      base_vha->host_no));
            }

            if (test_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags) &&
                atomic_read(&base_vha->loop_state) == LOOP_READY) {
                  clear_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags);
                  qla2xxx_flash_npiv_conf(base_vha);
            }

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

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

            qla2x00_do_dpc_all_vps(base_vha);

            ha->dpc_active = 0;
      } /* End of while(1) */

      DEBUG(printk("scsi(%ld): DPC handler exiting\n", base_vha->host_no));

      /*
       * Make sure that nobody tries to wake us up again.
       */
      ha->dpc_active = 0;

      return 0;
}

void
qla2xxx_wake_dpc(struct scsi_qla_host *vha)
{
      struct qla_hw_data *ha = vha->hw;
      struct task_struct *t = ha->dpc_thread;

      if (!test_bit(UNLOADING, &vha->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 *vha)
{
      if (vha->flags.online && !vha->flags.reset_active &&
          !atomic_read(&vha->loop_down_timer) &&
          !(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))) {
            do {
                  clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);

                  /*
                   * Issue marker command only when we are going to start
                   * the I/O.
                   */
                  vha->marker_needed = 1;
            } while (!atomic_read(&vha->loop_down_timer) &&
                (test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags)));
      }
}

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

      qla2x00_sp_free_dma(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 *vha)
{
      unsigned long     cpu_flags = 0;
      fc_port_t   *fcport;
      int         start_dpc = 0;
      int         index;
      srb_t       *sp;
      int         t;
      struct qla_hw_data *ha = vha->hw;
      struct req_que *req;
      /*
       * 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, &vha->vp_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",
                      vha->host_no,
                      t, atomic_read(&fcport->port_down_timer)));
            }
            t++;
      } /* End of for fcport  */


      /* Loop down handler. */
      if (atomic_read(&vha->loop_down_timer) > 0 &&
          !(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
            && vha->flags.online) {

            if (atomic_read(&vha->loop_down_timer) ==
                vha->loop_down_abort_time) {

                  DEBUG(printk("scsi(%ld): Loop Down - aborting the "
                      "queues before time expire\n",
                      vha->host_no));

                  if (!IS_QLA2100(ha) && vha->link_down_timeout)
                        atomic_set(&vha->loop_state, LOOP_DEAD);

                  /* Schedule an ISP abort to return any tape commands. */
                  /* NPIV - scan physical port only */
                  if (!vha->vp_idx) {
                        spin_lock_irqsave(&ha->hardware_lock,
                            cpu_flags);
                        req = ha->req_q_map[0];
                        for (index = 1;
                            index < MAX_OUTSTANDING_COMMANDS;
                            index++) {
                              fc_port_t *sfcp;

                              sp = req->outstanding_cmds[index];
                              if (!sp)
                                    continue;
                              sfcp = sp->fcport;
                              if (!(sfcp->flags & FCF_TAPE_PRESENT))
                                    continue;

                              set_bit(ISP_ABORT_NEEDED,
                                          &vha->dpc_flags);
                              break;
                        }
                        spin_unlock_irqrestore(&ha->hardware_lock,
                                                cpu_flags);
                  }
                  start_dpc++;
            }

            /* if the loop has been down for 4 minutes, reinit adapter */
            if (atomic_dec_and_test(&vha->loop_down_timer) != 0) {
                  if (!(vha->device_flags & DFLG_NO_CABLE) &&
                      !vha->vp_idx) {
                        DEBUG(printk("scsi(%ld): Loop down - "
                            "aborting ISP.\n",
                            vha->host_no));
                        qla_printk(KERN_WARNING, ha,
                            "Loop down - aborting ISP.\n");

                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                  }
            }
            DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
                vha->host_no,
                atomic_read(&vha->loop_down_timer)));
      }

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

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

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

      qla2x00_restart_timer(vha, WATCH_INTERVAL);
}

/* Firmware interface routines. */

#define FW_BLOBS  7
#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_ISP81XX      6

#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"
#define FW_FILE_ISP81XX "ql8100_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, },
      { .name = FW_FILE_ISP81XX, },
};

struct fw_blob *
qla2x00_request_firmware(scsi_qla_host_t *vha)
{
      struct qla_hw_data *ha = vha->hw;
      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];
      } else if (IS_QLA81XX(ha)) {
            blob = &qla_fw_blobs[FW_ISP81XX];
      }

      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", vha->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)
{
      scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);

      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_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);
            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 *base_vha = pci_get_drvdata(pdev);
      struct qla_hw_data *ha = base_vha->hw;
      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(base_vha, 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 *base_vha = pci_get_drvdata(pdev);
      struct qla_hw_data *ha = base_vha->hw;
      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(base_vha))
            return ret;

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

      return ret;
}

static void
qla2xxx_pci_resume(struct pci_dev *pdev)
{
      scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
      struct qla_hw_data *ha = base_vha->hw;
      int ret;

      ret = qla2x00_wait_for_hba_online(base_vha);
      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) },
      { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8001) },
      { 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);
MODULE_FIRMWARE(FW_FILE_ISP81XX);

Generated by  Doxygen 1.6.0   Back to index