drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 static void qla2x00_free_device(scsi_qla_host_t *);
  58
  59 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  60
  61 int ql2xfdmienable;
  62 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  63 MODULE_PARM_DESC(ql2xfdmienable,
  64                 "Enables FDMI registratons "
  65                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  66
  67 /*
  68  * SCSI host template entry points
  69  */
  70 static int qla2xxx_slave_configure(struct scsi_device * device);
  71 static int qla2xxx_slave_alloc(struct scsi_device *);
  72 static void qla2xxx_slave_destroy(struct scsi_device *);
  73 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  74                 void (*fn)(struct scsi_cmnd *));
  75 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  76                 void (*fn)(struct scsi_cmnd *));
  77 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  78 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  79 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  80 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  81 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  82 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  83
  84 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  85 static int qla2x00_change_queue_type(struct scsi_device *, int);
  86
  87 static struct scsi_host_template qla2x00_driver_template = {
  88         .module                 = THIS_MODULE,
  89         .name                   = QLA2XXX_DRIVER_NAME,
  90         .queuecommand           = qla2x00_queuecommand,
  91
  92         .eh_abort_handler       = qla2xxx_eh_abort,
  93         .eh_device_reset_handler = qla2xxx_eh_device_reset,
  94         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
  95         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
  96
  97         .slave_configure        = qla2xxx_slave_configure,
  98
  99         .slave_alloc            = qla2xxx_slave_alloc,
 100         .slave_destroy          = qla2xxx_slave_destroy,
 101         .change_queue_depth     = qla2x00_change_queue_depth,
 102         .change_queue_type      = qla2x00_change_queue_type,
 103         .this_id                = -1,
 104         .cmd_per_lun            = 3,
 105         .use_clustering         = ENABLE_CLUSTERING,
 106         .sg_tablesize           = SG_ALL,
 107
 108         /*
 109          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 110          * which equates to 0x800000 sectors.
 111          */
 112         .max_sectors            = 0xFFFF,
 113         .shost_attrs            = qla2x00_host_attrs,
 114 };
 115
 116 static struct scsi_host_template qla24xx_driver_template = {
 117         .module                 = THIS_MODULE,
 118         .name                   = QLA2XXX_DRIVER_NAME,
 119         .queuecommand           = qla24xx_queuecommand,
 120
 121         .eh_abort_handler       = qla2xxx_eh_abort,
 122         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 123         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 124         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 125
 126         .slave_configure        = qla2xxx_slave_configure,
 127
 128         .slave_alloc            = qla2xxx_slave_alloc,
 129         .slave_destroy          = qla2xxx_slave_destroy,
 130         .change_queue_depth     = qla2x00_change_queue_depth,
 131         .change_queue_type      = qla2x00_change_queue_type,
 132         .this_id                = -1,
 133         .cmd_per_lun            = 3,
 134         .use_clustering         = ENABLE_CLUSTERING,
 135         .sg_tablesize           = SG_ALL,
 136
 137         .max_sectors            = 0xFFFF,
 138         .shost_attrs            = qla2x00_host_attrs,
 139 };
 140
 141 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 142
 143 /* TODO Convert to inlines
 144  *
 145  * Timer routines
 146  */
 147 #define WATCH_INTERVAL          1       /* number of seconds */
 148
 149 static void qla2x00_timer(scsi_qla_host_t *);
 150
 151 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 152     void *, unsigned long);
 153 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 154 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 155
 156 static inline void
 157 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 158 {
 159         init_timer(&ha->timer);
 160         ha->timer.expires = jiffies + interval * HZ;
 161         ha->timer.data = (unsigned long)ha;
 162         ha->timer.function = (void (*)(unsigned long))func;
 163         add_timer(&ha->timer);
 164         ha->timer_active = 1;
 165 }
 166
 167 static inline void
 168 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 169 {
 170         mod_timer(&ha->timer, jiffies + interval * HZ);
 171 }
 172
 173 static __inline__ void
 174 qla2x00_stop_timer(scsi_qla_host_t *ha)
 175 {
 176         del_timer_sync(&ha->timer);
 177         ha->timer_active = 0;
 178 }
 179
 180 static int qla2x00_do_dpc(void *data);
 181
 182 static void qla2x00_rst_aen(scsi_qla_host_t *);
 183
 184 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 185 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 186 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 187 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 188 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 189 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 190
 191 /* -------------------------------------------------------------------------- */
 192
 193 static char *
 194 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 195 {
 196         static char *pci_bus_modes[] = {
 197                 "33", "66", "100", "133",
 198         };
 199         uint16_t pci_bus;
 200
 201         strcpy(str, "PCI");
 202         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 203         if (pci_bus) {
 204                 strcat(str, "-X (");
 205                 strcat(str, pci_bus_modes[pci_bus]);
 206         } else {
 207                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 208                 strcat(str, " (");
 209                 strcat(str, pci_bus_modes[pci_bus]);
 210         }
 211         strcat(str, " MHz)");
 212
 213         return (str);
 214 }
 215
 216 static char *
 217 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 218 {
 219         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 220         uint32_t pci_bus;
 221         int pcie_reg;
 222
 223         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 224         if (pcie_reg) {
 225                 char lwstr[6];
 226                 uint16_t pcie_lstat, lspeed, lwidth;
 227
 228                 pcie_reg += 0x12;
 229                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 230                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 231                 lwidth = (pcie_lstat &
 232                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 233
 234                 strcpy(str, "PCIe (");
 235                 if (lspeed == 1)
 236                         strcat(str, "2.5Gb/s ");
 237                 else
 238                         strcat(str, "<unknown> ");
 239                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 240                 strcat(str, lwstr);
 241
 242                 return str;
 243         }
 244
 245         strcpy(str, "PCI");
 246         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 247         if (pci_bus == 0 || pci_bus == 8) {
 248                 strcat(str, " (");
 249                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 250         } else {
 251                 strcat(str, "-X ");
 252                 if (pci_bus & BIT_2)
 253                         strcat(str, "Mode 2");
 254                 else
 255                         strcat(str, "Mode 1");
 256                 strcat(str, " (");
 257                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 258         }
 259         strcat(str, " MHz)");
 260
 261         return str;
 262 }
 263
 264 char *
 265 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 266 {
 267         char un_str[10];
 268
 269         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 270             ha->fw_minor_version,
 271             ha->fw_subminor_version);
 272
 273         if (ha->fw_attributes & BIT_9) {
 274                 strcat(str, "FLX");
 275                 return (str);
 276         }
 277
 278         switch (ha->fw_attributes & 0xFF) {
 279         case 0x7:
 280                 strcat(str, "EF");
 281                 break;
 282         case 0x17:
 283                 strcat(str, "TP");
 284                 break;
 285         case 0x37:
 286                 strcat(str, "IP");
 287                 break;
 288         case 0x77:
 289                 strcat(str, "VI");
 290                 break;
 291         default:
 292                 sprintf(un_str, "(%x)", ha->fw_attributes);
 293                 strcat(str, un_str);
 294                 break;
 295         }
 296         if (ha->fw_attributes & 0x100)
 297                 strcat(str, "X");
 298
 299         return (str);
 300 }
 301
 302 char *
 303 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 304 {
 305         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 306             ha->fw_minor_version,
 307             ha->fw_subminor_version);
 308
 309         if (ha->fw_attributes & BIT_0)
 310                 strcat(str, "[Class 2] ");
 311         if (ha->fw_attributes & BIT_1)
 312                 strcat(str, "[IP] ");
 313         if (ha->fw_attributes & BIT_2)
 314                 strcat(str, "[Multi-ID] ");
 315         if (ha->fw_attributes & BIT_13)
 316                 strcat(str, "[Experimental]");
 317         return str;
 318 }
 319
 320 static inline srb_t *
 321 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 322     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 323 {
 324         srb_t *sp;
 325
 326         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 327         if (!sp)
 328                 return sp;
 329
 330         sp->ha = ha;
 331         sp->fcport = fcport;
 332         sp->cmd = cmd;
 333         sp->flags = 0;
 334         CMD_SP(cmd) = (void *)sp;
 335         cmd->scsi_done = done;
 336
 337         return sp;
 338 }
 339
 340 static int
 341 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 342 {
 343         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 344         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 345         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 346         srb_t *sp;
 347         int rval;
 348
 349         rval = fc_remote_port_chkready(rport);
 350         if (rval) {
 351                 cmd->result = rval;
 352                 goto qc_fail_command;
 353         }
 354
 355         /* Close window on fcport/rport state-transitioning. */
 356         if (!*(fc_port_t **)rport->dd_data) {
 357                 cmd->result = DID_IMM_RETRY << 16;
 358                 goto qc_fail_command;
 359         }
 360
 361         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 362                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 363                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 364                         cmd->result = DID_NO_CONNECT << 16;
 365                         goto qc_fail_command;
 366                 }
 367                 goto qc_host_busy;
 368         }
 369
 370         spin_unlock_irq(ha->host->host_lock);
 371
 372         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 373         if (!sp)
 374                 goto qc_host_busy_lock;
 375
 376         rval = qla2x00_start_scsi(sp);
 377         if (rval != QLA_SUCCESS)
 378                 goto qc_host_busy_free_sp;
 379
 380         spin_lock_irq(ha->host->host_lock);
 381
 382         return 0;
 383
 384 qc_host_busy_free_sp:
 385         qla2x00_sp_free_dma(ha, sp);
 386         mempool_free(sp, ha->srb_mempool);
 387
 388 qc_host_busy_lock:
 389         spin_lock_irq(ha->host->host_lock);
 390
 391 qc_host_busy:
 392         return SCSI_MLQUEUE_HOST_BUSY;
 393
 394 qc_fail_command:
 395         done(cmd);
 396
 397         return 0;
 398 }
 399
 400
 401 static int
 402 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 403 {
 404         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 405         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 406         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 407         srb_t *sp;
 408         int rval;
 409
 410         rval = fc_remote_port_chkready(rport);
 411         if (rval) {
 412                 cmd->result = rval;
 413                 goto qc24_fail_command;
 414         }
 415
 416         /* Close window on fcport/rport state-transitioning. */
 417         if (!*(fc_port_t **)rport->dd_data) {
 418                 cmd->result = DID_IMM_RETRY << 16;
 419                 goto qc24_fail_command;
 420         }
 421
 422         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 423                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 424                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 425                         cmd->result = DID_NO_CONNECT << 16;
 426                         goto qc24_fail_command;
 427                 }
 428                 goto qc24_host_busy;
 429         }
 430
 431         spin_unlock_irq(ha->host->host_lock);
 432
 433         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 434         if (!sp)
 435                 goto qc24_host_busy_lock;
 436
 437         rval = qla24xx_start_scsi(sp);
 438         if (rval != QLA_SUCCESS)
 439                 goto qc24_host_busy_free_sp;
 440
 441         spin_lock_irq(ha->host->host_lock);
 442
 443         return 0;
 444
 445 qc24_host_busy_free_sp:
 446         qla2x00_sp_free_dma(ha, sp);
 447         mempool_free(sp, ha->srb_mempool);
 448
 449 qc24_host_busy_lock:
 450         spin_lock_irq(ha->host->host_lock);
 451
 452 qc24_host_busy:
 453         return SCSI_MLQUEUE_HOST_BUSY;
 454
 455 qc24_fail_command:
 456         done(cmd);
 457
 458         return 0;
 459 }
 460
 461
 462 /*
 463  * qla2x00_eh_wait_on_command
 464  *    Waits for the command to be returned by the Firmware for some
 465  *    max time.
 466  *
 467  * Input:
 468  *    ha = actual ha whose done queue will contain the command
 469  *            returned by firmware.
 470  *    cmd = Scsi Command to wait on.
 471  *    flag = Abort/Reset(Bus or Device Reset)
 472  *
 473  * Return:
 474  *    Not Found : 0
 475  *    Found : 1
 476  */
 477 static int
 478 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 479 {
 480 #define ABORT_POLLING_PERIOD    1000
 481 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 482         unsigned long wait_iter = ABORT_WAIT_ITER;
 483         int ret = QLA_SUCCESS;
 484
 485         while (CMD_SP(cmd)) {
 486                 msleep(ABORT_POLLING_PERIOD);
 487
 488                 if (--wait_iter)
 489                         break;
 490         }
 491         if (CMD_SP(cmd))
 492                 ret = QLA_FUNCTION_FAILED;
 493
 494         return ret;
 495 }
 496
 497 /*
 498  * qla2x00_wait_for_hba_online
 499  *    Wait till the HBA is online after going through
 500  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 501  *    finally HBA is disabled ie marked offline
 502  *
 503  * Input:
 504  *     ha - pointer to host adapter structure
 505  *
 506  * Note:
 507  *    Does context switching-Release SPIN_LOCK
 508  *    (if any) before calling this routine.
 509  *
 510  * Return:
 511  *    Success (Adapter is online) : 0
 512  *    Failed  (Adapter is offline/disabled) : 1
 513  */
 514 int
 515 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 516 {
 517         int             return_status;
 518         unsigned long   wait_online;
 519
 520         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 521         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 522             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 523             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 524             ha->dpc_active) && time_before(jiffies, wait_online)) {
 525
 526                 msleep(1000);
 527         }
 528         if (ha->flags.online)
 529                 return_status = QLA_SUCCESS;
 530         else
 531                 return_status = QLA_FUNCTION_FAILED;
 532
 533         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 534
 535         return (return_status);
 536 }
 537
 538 /*
 539  * qla2x00_wait_for_loop_ready
 540  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 541  *    to be in LOOP_READY state.
 542  * Input:
 543  *     ha - pointer to host adapter structure
 544  *
 545  * Note:
 546  *    Does context switching-Release SPIN_LOCK
 547  *    (if any) before calling this routine.
 548  *
 549  *
 550  * Return:
 551  *    Success (LOOP_READY) : 0
 552  *    Failed  (LOOP_NOT_READY) : 1
 553  */
 554 static inline int
 555 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 556 {
 557         int      return_status = QLA_SUCCESS;
 558         unsigned long loop_timeout ;
 559
 560         /* wait for 5 min at the max for loop to be ready */
 561         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 562
 563         while ((!atomic_read(&ha->loop_down_timer) &&
 564             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 565             atomic_read(&ha->loop_state) != LOOP_READY) {
 566                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 567                         return_status = QLA_FUNCTION_FAILED;
 568                         break;
 569                 }
 570                 msleep(1000);
 571                 if (time_after_eq(jiffies, loop_timeout)) {
 572                         return_status = QLA_FUNCTION_FAILED;
 573                         break;
 574                 }
 575         }
 576         return (return_status);
 577 }
 578
 579 /**************************************************************************
 580 * qla2xxx_eh_abort
 581 *
 582 * Description:
 583 *    The abort function will abort the specified command.
 584 *
 585 * Input:
 586 *    cmd = Linux SCSI command packet to be aborted.
 587 *
 588 * Returns:
 589 *    Either SUCCESS or FAILED.
 590 *
 591 * Note:
 592 *    Only return FAILED if command not returned by firmware.
 593 **************************************************************************/
 594 int
 595 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 596 {
 597         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 598         srb_t *sp;
 599         int ret, i;
 600         unsigned int id, lun;
 601         unsigned long serial;
 602         unsigned long flags;
 603         int wait = 0;
 604
 605         if (!CMD_SP(cmd))
 606                 return SUCCESS;
 607
 608         ret = SUCCESS;
 609
 610         id = cmd->device->id;
 611         lun = cmd->device->lun;
 612         serial = cmd->serial_number;
 613
 614         /* Check active list for command command. */
 615         spin_lock_irqsave(&ha->hardware_lock, flags);
 616         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 617                 sp = ha->outstanding_cmds[i];
 618
 619                 if (sp == NULL)
 620                         continue;
 621
 622                 if (sp->cmd != cmd)
 623                         continue;
 624
 625                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 626                     __func__, ha->host_no, sp, serial));
 627                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 628
 629                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 630                 if (ha->isp_ops.abort_command(ha, sp)) {
 631                         DEBUG2(printk("%s(%ld): abort_command "
 632                             "mbx failed.\n", __func__, ha->host_no));
 633                 } else {
 634                         DEBUG3(printk("%s(%ld): abort_command "
 635                             "mbx success.\n", __func__, ha->host_no));
 636                         wait = 1;
 637                 }
 638                 spin_lock_irqsave(&ha->hardware_lock, flags);
 639
 640                 break;
 641         }
 642         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 643
 644         /* Wait for the command to be returned. */
 645         if (wait) {
 646                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 647                         qla_printk(KERN_ERR, ha,
 648                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 649                             "%x.\n", ha->host_no, id, lun, serial, ret);
 650                         ret = FAILED;
 651                 }
 652         }
 653
 654         qla_printk(KERN_INFO, ha,
 655             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 656             ha->host_no, id, lun, wait, serial, ret);
 657
 658         return ret;
 659 }
 660
 661 /**************************************************************************
 662 * qla2x00_eh_wait_for_pending_target_commands
 663 *
 664 * Description:
 665 *    Waits for all the commands to come back from the specified target.
 666 *
 667 * Input:
 668 *    ha - pointer to scsi_qla_host structure.
 669 *    t  - target
 670 * Returns:
 671 *    Either SUCCESS or FAILED.
 672 *
 673 * Note:
 674 **************************************************************************/
 675 static int
 676 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 677 {
 678         int     cnt;
 679         int     status;
 680         srb_t           *sp;
 681         struct scsi_cmnd *cmd;
 682         unsigned long flags;
 683
 684         status = 0;
 685
 686         /*
 687          * Waiting for all commands for the designated target in the active
 688          * array
 689          */
 690         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 691                 spin_lock_irqsave(&ha->hardware_lock, flags);
 692                 sp = ha->outstanding_cmds[cnt];
 693                 if (sp) {
 694                         cmd = sp->cmd;
 695                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 696                         if (cmd->device->id == t) {
 697                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 698                                         status = 1;
 699                                         break;
 700                                 }
 701                         }
 702                 } else {
 703                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 704                 }
 705         }
 706         return (status);
 707 }
 708
 709
 710 /**************************************************************************
 711 * qla2xxx_eh_device_reset
 712 *
 713 * Description:
 714 *    The device reset function will reset the target and abort any
 715 *    executing commands.
 716 *
 717 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 718 *          attempt to use this value, even if you determine it is
 719 *          non-null.
 720 *
 721 * Input:
 722 *    cmd = Linux SCSI command packet of the command that cause the
 723 *          bus device reset.
 724 *
 725 * Returns:
 726 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 727 *
 728 **************************************************************************/
 729 int
 730 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 731 {
 732         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 733         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 734         srb_t *sp;
 735         int ret;
 736         unsigned int id, lun;
 737         unsigned long serial;
 738
 739         ret = FAILED;
 740
 741         id = cmd->device->id;
 742         lun = cmd->device->lun;
 743         serial = cmd->serial_number;
 744
 745         sp = (srb_t *) CMD_SP(cmd);
 746         if (!sp || !fcport)
 747                 return ret;
 748
 749         qla_printk(KERN_INFO, ha,
 750             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 751
 752         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 753                 goto eh_dev_reset_done;
 754
 755         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 756                 if (qla2x00_device_reset(ha, fcport) == 0)
 757                         ret = SUCCESS;
 758
 759 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 760                 if (ret == SUCCESS) {
 761                         if (fcport->flags & FC_FABRIC_DEVICE) {
 762                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 763                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 764                         }
 765                 }
 766 #endif
 767         } else {
 768                 DEBUG2(printk(KERN_INFO
 769                     "%s failed: loop not ready\n",__func__);)
 770         }
 771
 772         if (ret == FAILED) {
 773                 DEBUG3(printk("%s(%ld): device reset failed\n",
 774                     __func__, ha->host_no));
 775                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 776                     __func__);
 777
 778                 goto eh_dev_reset_done;
 779         }
 780
 781         /* Flush outstanding commands. */
 782         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 783                 ret = FAILED;
 784         if (ret == FAILED) {
 785                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 786                     __func__, ha->host_no));
 787                 qla_printk(KERN_INFO, ha,
 788                     "%s: failed while waiting for commands\n", __func__);
 789         } else
 790                 qla_printk(KERN_INFO, ha,
 791                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 792                     id, lun);
 793  eh_dev_reset_done:
 794         return ret;
 795 }
 796
 797 /**************************************************************************
 798 * qla2x00_eh_wait_for_pending_commands
 799 *
 800 * Description:
 801 *    Waits for all the commands to come back from the specified host.
 802 *
 803 * Input:
 804 *    ha - pointer to scsi_qla_host structure.
 805 *
 806 * Returns:
 807 *    1 : SUCCESS
 808 *    0 : FAILED
 809 *
 810 * Note:
 811 **************************************************************************/
 812 static int
 813 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 814 {
 815         int     cnt;
 816         int     status;
 817         srb_t           *sp;
 818         struct scsi_cmnd *cmd;
 819         unsigned long flags;
 820
 821         status = 1;
 822
 823         /*
 824          * Waiting for all commands for the designated target in the active
 825          * array
 826          */
 827         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 828                 spin_lock_irqsave(&ha->hardware_lock, flags);
 829                 sp = ha->outstanding_cmds[cnt];
 830                 if (sp) {
 831                         cmd = sp->cmd;
 832                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 833                         status = qla2x00_eh_wait_on_command(ha, cmd);
 834                         if (status == 0)
 835                                 break;
 836                 }
 837                 else {
 838                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 839                 }
 840         }
 841         return (status);
 842 }
 843
 844
 845 /**************************************************************************
 846 * qla2xxx_eh_bus_reset
 847 *
 848 * Description:
 849 *    The bus reset function will reset the bus and abort any executing
 850 *    commands.
 851 *
 852 * Input:
 853 *    cmd = Linux SCSI command packet of the command that cause the
 854 *          bus reset.
 855 *
 856 * Returns:
 857 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 858 *
 859 **************************************************************************/
 860 int
 861 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 862 {
 863         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 864         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 865         srb_t *sp;
 866         int ret;
 867         unsigned int id, lun;
 868         unsigned long serial;
 869
 870         ret = FAILED;
 871
 872         id = cmd->device->id;
 873         lun = cmd->device->lun;
 874         serial = cmd->serial_number;
 875
 876         sp = (srb_t *) CMD_SP(cmd);
 877         if (!sp || !fcport)
 878                 return ret;
 879
 880         qla_printk(KERN_INFO, ha,
 881             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 882
 883         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 884                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 885                 goto eh_bus_reset_done;
 886         }
 887
 888         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 889                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 890                         ret = SUCCESS;
 891         }
 892         if (ret == FAILED)
 893                 goto eh_bus_reset_done;
 894
 895         /* Flush outstanding commands. */
 896         if (!qla2x00_eh_wait_for_pending_commands(ha))
 897                 ret = FAILED;
 898
 899 eh_bus_reset_done:
 900         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 901             (ret == FAILED) ? "failed" : "succeded");
 902
 903         return ret;
 904 }
 905
 906 /**************************************************************************
 907 * qla2xxx_eh_host_reset
 908 *
 909 * Description:
 910 *    The reset function will reset the Adapter.
 911 *
 912 * Input:
 913 *      cmd = Linux SCSI command packet of the command that cause the
 914 *            adapter reset.
 915 *
 916 * Returns:
 917 *      Either SUCCESS or FAILED.
 918 *
 919 * Note:
 920 **************************************************************************/
 921 int
 922 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 923 {
 924         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 925         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 926         srb_t *sp;
 927         int ret;
 928         unsigned int id, lun;
 929         unsigned long serial;
 930
 931         ret = FAILED;
 932
 933         id = cmd->device->id;
 934         lun = cmd->device->lun;
 935         serial = cmd->serial_number;
 936
 937         sp = (srb_t *) CMD_SP(cmd);
 938         if (!sp || !fcport)
 939                 return ret;
 940
 941         qla_printk(KERN_INFO, ha,
 942             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 943
 944         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 945                 goto eh_host_reset_lock;
 946
 947         /*
 948          * Fixme-may be dpc thread is active and processing
 949          * loop_resync,so wait a while for it to
 950          * be completed and then issue big hammer.Otherwise
 951          * it may cause I/O failure as big hammer marks the
 952          * devices as lost kicking of the port_down_timer
 953          * while dpc is stuck for the mailbox to complete.
 954          */
 955         qla2x00_wait_for_loop_ready(ha);
 956         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 957         if (qla2x00_abort_isp(ha)) {
 958                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 959                 /* failed. schedule dpc to try */
 960                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 961
 962                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 963                         goto eh_host_reset_lock;
 964         }
 965         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 966
 967         /* Waiting for our command in done_queue to be returned to OS.*/
 968         if (qla2x00_eh_wait_for_pending_commands(ha))
 969                 ret = SUCCESS;
 970
 971 eh_host_reset_lock:
 972         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 973             (ret == FAILED) ? "failed" : "succeded");
 974
 975         return ret;
 976 }
 977
 978 /*
 979 * qla2x00_loop_reset
 980 *      Issue loop reset.
 981 *
 982 * Input:
 983 *      ha = adapter block pointer.
 984 *
 985 * Returns:
 986 *      0 = success
 987 */
 988 static int
 989 qla2x00_loop_reset(scsi_qla_host_t *ha)
 990 {
 991         int status = QLA_SUCCESS;
 992         struct fc_port *fcport;
 993
 994         if (ha->flags.enable_lip_reset) {
 995                 status = qla2x00_lip_reset(ha);
 996         }
 997
 998         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
 999                 list_for_each_entry(fcport, &ha->fcports, list) {
1000                         if (fcport->port_type != FCT_TARGET)
1001                                 continue;
1002
1003                         status = qla2x00_device_reset(ha, fcport);
1004                         if (status != QLA_SUCCESS)
1005                                 break;
1006                 }
1007         }
1008
1009         if (status == QLA_SUCCESS &&
1010                 ((!ha->flags.enable_target_reset &&
1011                   !ha->flags.enable_lip_reset) ||
1012                 ha->flags.enable_lip_full_login)) {
1013
1014                 status = qla2x00_full_login_lip(ha);
1015         }
1016
1017         /* Issue marker command only when we are going to start the I/O */
1018         ha->marker_needed = 1;
1019
1020         if (status) {
1021                 /* Empty */
1022                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1023                                 __func__,
1024                                 ha->host_no);)
1025         } else {
1026                 /* Empty */
1027                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1028                                 __func__,
1029                                 ha->host_no);)
1030         }
1031
1032         return(status);
1033 }
1034
1035 /*
1036  * qla2x00_device_reset
1037  *      Issue bus device reset message to the target.
1038  *
1039  * Input:
1040  *      ha = adapter block pointer.
1041  *      t = SCSI ID.
1042  *      TARGET_QUEUE_LOCK must be released.
1043  *      ADAPTER_STATE_LOCK must be released.
1044  *
1045  * Context:
1046  *      Kernel context.
1047  */
1048 static int
1049 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1050 {
1051         /* Abort Target command will clear Reservation */
1052         return ha->isp_ops.abort_target(reset_fcport);
1053 }
1054
1055 static int
1056 qla2xxx_slave_alloc(struct scsi_device *sdev)
1057 {
1058         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1059
1060         if (!rport || fc_remote_port_chkready(rport))
1061                 return -ENXIO;
1062
1063         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1064
1065         return 0;
1066 }
1067
1068 static int
1069 qla2xxx_slave_configure(struct scsi_device *sdev)
1070 {
1071         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1072         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1073
1074         if (sdev->tagged_supported)
1075                 scsi_activate_tcq(sdev, 32);
1076         else
1077                 scsi_deactivate_tcq(sdev, 32);
1078
1079         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1080
1081         return 0;
1082 }
1083
1084 static void
1085 qla2xxx_slave_destroy(struct scsi_device *sdev)
1086 {
1087         sdev->hostdata = NULL;
1088 }
1089
1090 static int
1091 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1092 {
1093         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1094         return sdev->queue_depth;
1095 }
1096
1097 static int
1098 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1099 {
1100         if (sdev->tagged_supported) {
1101                 scsi_set_tag_type(sdev, tag_type);
1102                 if (tag_type)
1103                         scsi_activate_tcq(sdev, sdev->queue_depth);
1104                 else
1105                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1106         } else
1107                 tag_type = 0;
1108
1109         return tag_type;
1110 }
1111
1112 /**
1113  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1114  * @ha: HA context
1115  *
1116  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1117  * supported addressing method.
1118  */
1119 static void
1120 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1121 {
1122         /* Assume a 32bit DMA mask. */
1123         ha->flags.enable_64bit_addressing = 0;
1124
1125         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1126                 /* Any upper-dword bits set? */
1127                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1128                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1129                         /* Ok, a 64bit DMA mask is applicable. */
1130                         ha->flags.enable_64bit_addressing = 1;
1131                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1132                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1133                         return;
1134                 }
1135         }
1136
1137         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1138         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1139 }
1140
1141 static inline void
1142 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1143 {
1144         ha->device_type = DT_EXTENDED_IDS;
1145         switch (ha->pdev->device) {
1146         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1147                 ha->device_type |= DT_ISP2100;
1148                 ha->device_type &= ~DT_EXTENDED_IDS;
1149                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1150                 break;
1151         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1152                 ha->device_type |= DT_ISP2200;
1153                 ha->device_type &= ~DT_EXTENDED_IDS;
1154                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1155                 break;
1156         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1157                 ha->device_type |= DT_ISP2300;
1158                 ha->device_type |= DT_ZIO_SUPPORTED;
1159                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1160                 break;
1161         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1162                 ha->device_type |= DT_ISP2312;
1163                 ha->device_type |= DT_ZIO_SUPPORTED;
1164                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1165                 break;
1166         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1167                 ha->device_type |= DT_ISP2322;
1168                 ha->device_type |= DT_ZIO_SUPPORTED;
1169                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1170                     ha->pdev->subsystem_device == 0x0170)
1171                         ha->device_type |= DT_OEM_001;
1172                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1173                 break;
1174         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1175                 ha->device_type |= DT_ISP6312;
1176                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1177                 break;
1178         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1179                 ha->device_type |= DT_ISP6322;
1180                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1181                 break;
1182         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1183                 ha->device_type |= DT_ISP2422;
1184                 ha->device_type |= DT_ZIO_SUPPORTED;
1185                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1186                 break;
1187         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1188                 ha->device_type |= DT_ISP2432;
1189                 ha->device_type |= DT_ZIO_SUPPORTED;
1190                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1191                 break;
1192         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1193                 ha->device_type |= DT_ISP5422;
1194                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1195                 break;
1196         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1197                 ha->device_type |= DT_ISP5432;
1198                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1199                 break;
1200         }
1201 }
1202
1203 static int
1204 qla2x00_iospace_config(scsi_qla_host_t *ha)
1205 {
1206         unsigned long   pio, pio_len, pio_flags;
1207         unsigned long   mmio, mmio_len, mmio_flags;
1208
1209         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1210         pio = pci_resource_start(ha->pdev, 0);
1211         pio_len = pci_resource_len(ha->pdev, 0);
1212         pio_flags = pci_resource_flags(ha->pdev, 0);
1213         if (pio_flags & IORESOURCE_IO) {
1214                 if (pio_len < MIN_IOBASE_LEN) {
1215                         qla_printk(KERN_WARNING, ha,
1216                             "Invalid PCI I/O region size (%s)...\n",
1217                                 pci_name(ha->pdev));
1218                         pio = 0;
1219                 }
1220         } else {
1221                 qla_printk(KERN_WARNING, ha,
1222                     "region #0 not a PIO resource (%s)...\n",
1223                     pci_name(ha->pdev));
1224                 pio = 0;
1225         }
1226
1227         /* Use MMIO operations for all accesses. */
1228         mmio = pci_resource_start(ha->pdev, 1);
1229         mmio_len = pci_resource_len(ha->pdev, 1);
1230         mmio_flags = pci_resource_flags(ha->pdev, 1);
1231
1232         if (!(mmio_flags & IORESOURCE_MEM)) {
1233                 qla_printk(KERN_ERR, ha,
1234                     "region #0 not an MMIO resource (%s), aborting\n",
1235                     pci_name(ha->pdev));
1236                 goto iospace_error_exit;
1237         }
1238         if (mmio_len < MIN_IOBASE_LEN) {
1239                 qla_printk(KERN_ERR, ha,
1240                     "Invalid PCI mem region size (%s), aborting\n",
1241                         pci_name(ha->pdev));
1242                 goto iospace_error_exit;
1243         }
1244
1245         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1246                 qla_printk(KERN_WARNING, ha,
1247                     "Failed to reserve PIO/MMIO regions (%s)\n",
1248                     pci_name(ha->pdev));
1249
1250                 goto iospace_error_exit;
1251         }
1252
1253         ha->pio_address = pio;
1254         ha->pio_length = pio_len;
1255         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1256         if (!ha->iobase) {
1257                 qla_printk(KERN_ERR, ha,
1258                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1259
1260                 goto iospace_error_exit;
1261         }
1262
1263         return (0);
1264
1265 iospace_error_exit:
1266         return (-ENOMEM);
1267 }
1268
1269 static void
1270 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1271 {
1272         unsigned long flags = 0;
1273         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1274
1275         spin_lock_irqsave(&ha->hardware_lock, flags);
1276         ha->interrupts_on = 1;
1277         /* enable risc and host interrupts */
1278         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1279         RD_REG_WORD(&reg->ictrl);
1280         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1281
1282 }
1283
1284 static void
1285 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1286 {
1287         unsigned long flags = 0;
1288         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1289
1290         spin_lock_irqsave(&ha->hardware_lock, flags);
1291         ha->interrupts_on = 0;
1292         /* disable risc and host interrupts */
1293         WRT_REG_WORD(&reg->ictrl, 0);
1294         RD_REG_WORD(&reg->ictrl);
1295         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1296 }
1297
1298 static void
1299 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1300 {
1301         unsigned long flags = 0;
1302         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1303
1304         spin_lock_irqsave(&ha->hardware_lock, flags);
1305         ha->interrupts_on = 1;
1306         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1307         RD_REG_DWORD(&reg->ictrl);
1308         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1309 }
1310
1311 static void
1312 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1313 {
1314         unsigned long flags = 0;
1315         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1316
1317         spin_lock_irqsave(&ha->hardware_lock, flags);
1318         ha->interrupts_on = 0;
1319         WRT_REG_DWORD(&reg->ictrl, 0);
1320         RD_REG_DWORD(&reg->ictrl);
1321         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1322 }
1323
1324 /*
1325  * PCI driver interface
1326  */
1327 static int qla2x00_probe_one(struct pci_dev *pdev)
1328 {
1329         int     ret = -ENODEV;
1330         device_reg_t __iomem *reg;
1331         struct Scsi_Host *host;
1332         scsi_qla_host_t *ha;
1333         unsigned long   flags = 0;
1334         unsigned long   wait_switch = 0;
1335         char pci_info[20];
1336         char fw_str[30];
1337         fc_port_t *fcport;
1338         struct scsi_host_template *sht;
1339
1340         if (pci_enable_device(pdev))
1341                 goto probe_out;
1342
1343         sht = &qla2x00_driver_template;
1344         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1345             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1346                 sht = &qla24xx_driver_template;
1347         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1348         if (host == NULL) {
1349                 printk(KERN_WARNING
1350                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1351                 goto probe_disable_device;
1352         }
1353
1354         /* Clear our data area */
1355         ha = (scsi_qla_host_t *)host->hostdata;
1356         memset(ha, 0, sizeof(scsi_qla_host_t));
1357
1358         ha->pdev = pdev;
1359         ha->host = host;
1360         ha->host_no = host->host_no;
1361         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1362
1363         /* Set ISP-type information. */
1364         qla2x00_set_isp_flags(ha);
1365
1366         /* Configure PCI I/O space */
1367         ret = qla2x00_iospace_config(ha);
1368         if (ret)
1369                 goto probe_failed;
1370
1371         qla_printk(KERN_INFO, ha,
1372             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1373             ha->iobase);
1374
1375         spin_lock_init(&ha->hardware_lock);
1376
1377         ha->prev_topology = 0;
1378         ha->init_cb_size = sizeof(init_cb_t);
1379         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1380         ha->link_data_rate = LDR_UNKNOWN;
1381         ha->optrom_size = OPTROM_SIZE_2300;
1382
1383         /* Assign ISP specific operations. */
1384         ha->isp_ops.pci_config          = qla2100_pci_config;
1385         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1386         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1387         ha->isp_ops.config_rings        = qla2x00_config_rings;
1388         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1389         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1390         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1391         ha->isp_ops.load_risc           = qla2x00_load_risc;
1392         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1393         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1394         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1395         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1396         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1397         ha->isp_ops.abort_command       = qla2x00_abort_command;
1398         ha->isp_ops.abort_target        = qla2x00_abort_target;
1399         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1400         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1401         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1402         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1403         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1404         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1405         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1406         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1407         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1408         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1409         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1410         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1411         if (IS_QLA2100(ha)) {
1412                 host->max_id = MAX_TARGETS_2100;
1413                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1414                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1415                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1416                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1417                 host->sg_tablesize = 32;
1418                 ha->gid_list_info_size = 4;
1419         } else if (IS_QLA2200(ha)) {
1420                 host->max_id = MAX_TARGETS_2200;
1421                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1422                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1423                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1424                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1425                 ha->gid_list_info_size = 4;
1426         } else if (IS_QLA23XX(ha)) {
1427                 host->max_id = MAX_TARGETS_2200;
1428                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1429                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1430                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1431                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1432                 ha->isp_ops.pci_config = qla2300_pci_config;
1433                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1434                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1435                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1436                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1437                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1438                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1439                 ha->gid_list_info_size = 6;
1440                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1441                         ha->optrom_size = OPTROM_SIZE_2322;
1442         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1443                 host->max_id = MAX_TARGETS_2200;
1444                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1445                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1446                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1447                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1448                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1449                 ha->mgmt_svr_loop_id = 10;
1450                 ha->isp_ops.pci_config = qla24xx_pci_config;
1451                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1452                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1453                 ha->isp_ops.config_rings = qla24xx_config_rings;
1454                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1455                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1456                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1457                 ha->isp_ops.load_risc = qla24xx_load_risc;
1458                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1459                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1460                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1461                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1462                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1463                 ha->isp_ops.abort_command = qla24xx_abort_command;
1464                 ha->isp_ops.abort_target = qla24xx_abort_target;
1465                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1466                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1467                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1468                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1469                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1470                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1471                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1472                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1473                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1474                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1475                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1476                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1477                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1478                 ha->gid_list_info_size = 8;
1479                 ha->optrom_size = OPTROM_SIZE_24XX;
1480         }
1481         host->can_queue = ha->request_q_length + 128;
1482
1483         /* load the F/W, read paramaters, and init the H/W */
1484         ha->instance = num_hosts;
1485
1486         init_MUTEX(&ha->mbx_cmd_sem);
1487         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1488
1489         INIT_LIST_HEAD(&ha->list);
1490         INIT_LIST_HEAD(&ha->fcports);
1491
1492         /*
1493          * These locks are used to prevent more than one CPU
1494          * from modifying the queue at the same time. The
1495          * higher level "host_lock" will reduce most
1496          * contention for these locks.
1497          */
1498         spin_lock_init(&ha->mbx_reg_lock);
1499
1500         qla2x00_config_dma_addressing(ha);
1501         if (qla2x00_mem_alloc(ha)) {
1502                 qla_printk(KERN_WARNING, ha,
1503                     "[ERROR] Failed to allocate memory for adapter\n");
1504
1505                 ret = -ENOMEM;
1506                 goto probe_failed;
1507         }
1508
1509         if (qla2x00_initialize_adapter(ha) &&
1510             !(ha->device_flags & DFLG_NO_CABLE)) {
1511
1512                 qla_printk(KERN_WARNING, ha,
1513                     "Failed to initialize adapter\n");
1514
1515                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1516                     "Adapter flags %x.\n",
1517                     ha->host_no, ha->device_flags));
1518
1519                 ret = -ENODEV;
1520                 goto probe_failed;
1521         }
1522
1523         /*
1524          * Startup the kernel thread for this host adapter
1525          */
1526         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1527                         "%s_dpc", ha->host_str);
1528         if (IS_ERR(ha->dpc_thread)) {
1529                 qla_printk(KERN_WARNING, ha,
1530                     "Unable to start DPC thread!\n");
1531                 ret = PTR_ERR(ha->dpc_thread);
1532                 goto probe_failed;
1533         }
1534
1535         host->this_id = 255;
1536         host->cmd_per_lun = 3;
1537         host->unique_id = ha->instance;
1538         host->max_cmd_len = MAX_CMDSZ;
1539         host->max_channel = MAX_BUSES - 1;
1540         host->max_lun = MAX_LUNS;
1541         host->transportt = qla2xxx_transport_template;
1542
1543         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1544             SA_INTERRUPT|SA_SHIRQ, QLA2XXX_DRIVER_NAME, ha);
1545         if (ret) {
1546                 qla_printk(KERN_WARNING, ha,
1547                     "Failed to reserve interrupt %d already in use.\n",
1548                     pdev->irq);
1549                 goto probe_failed;
1550         }
1551         host->irq = pdev->irq;
1552
1553         /* Initialized the timer */
1554         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1555
1556         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1557             ha->host_no, ha));
1558
1559         ha->isp_ops.disable_intrs(ha);
1560
1561         spin_lock_irqsave(&ha->hardware_lock, flags);
1562         reg = ha->iobase;
1563         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1564                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1565                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1566         } else {
1567                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1568                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1569                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1570
1571                 /* Enable proper parity */
1572                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1573                         if (IS_QLA2300(ha))
1574                                 /* SRAM parity */
1575                                 WRT_REG_WORD(&reg->isp.hccr,
1576                                     (HCCR_ENABLE_PARITY + 0x1));
1577                         else
1578                                 /* SRAM, Instruction RAM and GP RAM parity */
1579                                 WRT_REG_WORD(&reg->isp.hccr,
1580                                     (HCCR_ENABLE_PARITY + 0x7));
1581                 }
1582         }
1583         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1584
1585         ha->isp_ops.enable_intrs(ha);
1586
1587         /* v2.19.5b6 */
1588         /*
1589          * Wait around max loop_reset_delay secs for the devices to come
1590          * on-line. We don't want Linux scanning before we are ready.
1591          *
1592          */
1593         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1594             time_before(jiffies,wait_switch) &&
1595              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1596              && (ha->device_flags & SWITCH_FOUND) ;) {
1597
1598                 qla2x00_check_fabric_devices(ha);
1599
1600                 msleep(10);
1601         }
1602
1603         pci_set_drvdata(pdev, ha);
1604         ha->flags.init_done = 1;
1605         num_hosts++;
1606
1607         ret = scsi_add_host(host, &pdev->dev);
1608         if (ret)
1609                 goto probe_failed;
1610
1611         qla2x00_alloc_sysfs_attr(ha);
1612
1613         qla2x00_init_host_attr(ha);
1614
1615         qla_printk(KERN_INFO, ha, "\n"
1616             " QLogic Fibre Channel HBA Driver: %s\n"
1617             "  QLogic %s - %s\n"
1618             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1619             qla2x00_version_str, ha->model_number,
1620             ha->model_desc ? ha->model_desc: "", pdev->device,
1621             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1622             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1623             ha->isp_ops.fw_version_str(ha, fw_str));
1624
1625         /* Go with fc_rport registration. */
1626         list_for_each_entry(fcport, &ha->fcports, list)
1627                 qla2x00_reg_remote_port(ha, fcport);
1628
1629         return 0;
1630
1631 probe_failed:
1632         qla2x00_free_device(ha);
1633
1634         scsi_host_put(host);
1635
1636 probe_disable_device:
1637         pci_disable_device(pdev);
1638
1639 probe_out:
1640         return ret;
1641 }
1642
1643 static void qla2x00_remove_one(struct pci_dev *pdev)
1644 {
1645         scsi_qla_host_t *ha;
1646
1647         ha = pci_get_drvdata(pdev);
1648
1649         qla2x00_free_sysfs_attr(ha);
1650
1651         fc_remove_host(ha->host);
1652
1653         scsi_remove_host(ha->host);
1654
1655         qla2x00_free_device(ha);
1656
1657         scsi_host_put(ha->host);
1658
1659         pci_set_drvdata(pdev, NULL);
1660 }
1661
1662 static void
1663 qla2x00_free_device(scsi_qla_host_t *ha)
1664 {
1665         /* Disable timer */
1666         if (ha->timer_active)
1667                 qla2x00_stop_timer(ha);
1668
1669         /* Kill the kernel thread for this host */
1670         if (ha->dpc_thread) {
1671                 struct task_struct *t = ha->dpc_thread;
1672
1673                 /*
1674                  * qla2xxx_wake_dpc checks for ->dpc_thread
1675                  * so we need to zero it out.
1676                  */
1677                 ha->dpc_thread = NULL;
1678                 kthread_stop(t);
1679         }
1680
1681         /* Stop currently executing firmware. */
1682         qla2x00_stop_firmware(ha);
1683
1684         /* turn-off interrupts on the card */
1685         if (ha->interrupts_on)
1686                 ha->isp_ops.disable_intrs(ha);
1687
1688         qla2x00_mem_free(ha);
1689
1690         ha->flags.online = 0;
1691
1692         /* Detach interrupts */
1693         if (ha->host->irq)
1694                 free_irq(ha->host->irq, ha);
1695
1696         /* release io space registers  */
1697         if (ha->iobase)
1698                 iounmap(ha->iobase);
1699         pci_release_regions(ha->pdev);
1700
1701         pci_disable_device(ha->pdev);
1702 }
1703
1704 static inline void
1705 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1706     int defer)
1707 {
1708         unsigned long flags;
1709         struct fc_rport *rport;
1710
1711         if (!fcport->rport)
1712                 return;
1713
1714         rport = fcport->rport;
1715         if (defer) {
1716                 spin_lock_irqsave(&fcport->rport_lock, flags);
1717                 fcport->drport = rport;
1718                 fcport->rport = NULL;
1719                 *(fc_port_t **)rport->dd_data = NULL;
1720                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1721                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1722         } else {
1723                 spin_lock_irqsave(&fcport->rport_lock, flags);
1724                 fcport->rport = NULL;
1725                 *(fc_port_t **)rport->dd_data = NULL;
1726                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1727                 fc_remote_port_delete(rport);
1728         }
1729 }
1730
1731 /*
1732  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1733  *
1734  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1735  *
1736  * Return: None.
1737  *
1738  * Context:
1739  */
1740 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1741     int do_login, int defer)
1742 {
1743         if (atomic_read(&fcport->state) == FCS_ONLINE)
1744                 qla2x00_schedule_rport_del(ha, fcport, defer);
1745
1746         /*
1747          * We may need to retry the login, so don't change the state of the
1748          * port but do the retries.
1749          */
1750         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1751                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1752
1753         if (!do_login)
1754                 return;
1755
1756         if (fcport->login_retry == 0) {
1757                 fcport->login_retry = ha->login_retry_count;
1758                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1759
1760                 DEBUG(printk("scsi(%ld): Port login retry: "
1761                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1762                     "id = 0x%04x retry cnt=%d\n",
1763                     ha->host_no,
1764                     fcport->port_name[0],
1765                     fcport->port_name[1],
1766                     fcport->port_name[2],
1767                     fcport->port_name[3],
1768                     fcport->port_name[4],
1769                     fcport->port_name[5],
1770                     fcport->port_name[6],
1771                     fcport->port_name[7],
1772                     fcport->loop_id,
1773                     fcport->login_retry));
1774         }
1775 }
1776
1777 /*
1778  * qla2x00_mark_all_devices_lost
1779  *      Updates fcport state when device goes offline.
1780  *
1781  * Input:
1782  *      ha = adapter block pointer.
1783  *      fcport = port structure pointer.
1784  *
1785  * Return:
1786  *      None.
1787  *
1788  * Context:
1789  */
1790 void
1791 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1792 {
1793         fc_port_t *fcport;
1794
1795         list_for_each_entry(fcport, &ha->fcports, list) {
1796                 if (fcport->port_type != FCT_TARGET)
1797                         continue;
1798
1799                 /*
1800                  * No point in marking the device as lost, if the device is
1801                  * already DEAD.
1802                  */
1803                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1804                         continue;
1805                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1806                         qla2x00_schedule_rport_del(ha, fcport, defer);
1807                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1808         }
1809
1810         if (defer)
1811                 qla2xxx_wake_dpc(ha);
1812 }
1813
1814 /*
1815 * qla2x00_mem_alloc
1816 *      Allocates adapter memory.
1817 *
1818 * Returns:
1819 *      0  = success.
1820 *      1  = failure.
1821 */
1822 static uint8_t
1823 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1824 {
1825         char    name[16];
1826         uint8_t   status = 1;
1827         int     retry= 10;
1828
1829         do {
1830                 /*
1831                  * This will loop only once if everything goes well, else some
1832                  * number of retries will be performed to get around a kernel
1833                  * bug where available mem is not allocated until after a
1834                  * little delay and a retry.
1835                  */
1836                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1837                     (ha->request_q_length + 1) * sizeof(request_t),
1838                     &ha->request_dma, GFP_KERNEL);
1839                 if (ha->request_ring == NULL) {
1840                         qla_printk(KERN_WARNING, ha,
1841                             "Memory Allocation failed - request_ring\n");
1842
1843                         qla2x00_mem_free(ha);
1844                         msleep(100);
1845
1846                         continue;
1847                 }
1848
1849                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1850                     (ha->response_q_length + 1) * sizeof(response_t),
1851                     &ha->response_dma, GFP_KERNEL);
1852                 if (ha->response_ring == NULL) {
1853                         qla_printk(KERN_WARNING, ha,
1854                             "Memory Allocation failed - response_ring\n");
1855
1856                         qla2x00_mem_free(ha);
1857                         msleep(100);
1858
1859                         continue;
1860                 }
1861
1862                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1863                     &ha->gid_list_dma, GFP_KERNEL);
1864                 if (ha->gid_list == NULL) {
1865                         qla_printk(KERN_WARNING, ha,
1866                             "Memory Allocation failed - gid_list\n");
1867
1868                         qla2x00_mem_free(ha);
1869                         msleep(100);
1870
1871                         continue;
1872                 }
1873
1874                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1875                     ha->host_no);
1876                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1877                     DMA_POOL_SIZE, 8, 0);
1878                 if (ha->s_dma_pool == NULL) {
1879                         qla_printk(KERN_WARNING, ha,
1880                             "Memory Allocation failed - s_dma_pool\n");
1881
1882                         qla2x00_mem_free(ha);
1883                         msleep(100);
1884
1885                         continue;
1886                 }
1887
1888                 /* get consistent memory allocated for init control block */
1889                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1890                     &ha->init_cb_dma);
1891                 if (ha->init_cb == NULL) {
1892                         qla_printk(KERN_WARNING, ha,
1893                             "Memory Allocation failed - init_cb\n");
1894
1895                         qla2x00_mem_free(ha);
1896                         msleep(100);
1897
1898                         continue;
1899                 }
1900                 memset(ha->init_cb, 0, ha->init_cb_size);
1901
1902                 /* Allocate ioctl related memory. */
1903                 if (qla2x00_alloc_ioctl_mem(ha)) {
1904                         qla_printk(KERN_WARNING, ha,
1905                             "Memory Allocation failed - ioctl_mem\n");
1906
1907                         qla2x00_mem_free(ha);
1908                         msleep(100);
1909
1910                         continue;
1911                 }
1912
1913                 if (qla2x00_allocate_sp_pool(ha)) {
1914                         qla_printk(KERN_WARNING, ha,
1915                             "Memory Allocation failed - "
1916                             "qla2x00_allocate_sp_pool()\n");
1917
1918                         qla2x00_mem_free(ha);
1919                         msleep(100);
1920
1921                         continue;
1922                 }
1923
1924                 /* Allocate memory for SNS commands */
1925                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1926                         /* Get consistent memory allocated for SNS commands */
1927                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1928                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1929                             GFP_KERNEL);
1930                         if (ha->sns_cmd == NULL) {
1931                                 /* error */
1932                                 qla_printk(KERN_WARNING, ha,
1933                                     "Memory Allocation failed - sns_cmd\n");
1934
1935                                 qla2x00_mem_free(ha);
1936                                 msleep(100);
1937
1938                                 continue;
1939                         }
1940                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1941                 } else {
1942                         /* Get consistent memory allocated for MS IOCB */
1943                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1944                             &ha->ms_iocb_dma);
1945                         if (ha->ms_iocb == NULL) {
1946                                 /* error */
1947                                 qla_printk(KERN_WARNING, ha,
1948                                     "Memory Allocation failed - ms_iocb\n");
1949
1950                                 qla2x00_mem_free(ha);
1951                                 msleep(100);
1952
1953                                 continue;
1954                         }
1955                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1956
1957                         /*
1958                          * Get consistent memory allocated for CT SNS
1959                          * commands
1960                          */
1961                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1962                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1963                             GFP_KERNEL);
1964                         if (ha->ct_sns == NULL) {
1965                                 /* error */
1966                                 qla_printk(KERN_WARNING, ha,
1967                                     "Memory Allocation failed - ct_sns\n");
1968
1969                                 qla2x00_mem_free(ha);
1970                                 msleep(100);
1971
1972                                 continue;
1973                         }
1974                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1975                 }
1976
1977                 /* Done all allocations without any error. */
1978                 status = 0;
1979
1980         } while (retry-- && status != 0);
1981
1982         if (status) {
1983                 printk(KERN_WARNING
1984                         "%s(): **** FAILED ****\n", __func__);
1985         }
1986
1987         return(status);
1988 }
1989
1990 /*
1991 * qla2x00_mem_free
1992 *      Frees all adapter allocated memory.
1993 *
1994 * Input:
1995 *      ha = adapter block pointer.
1996 */
1997 static void
1998 qla2x00_mem_free(scsi_qla_host_t *ha)
1999 {
2000         struct list_head        *fcpl, *fcptemp;
2001         fc_port_t       *fcport;
2002
2003         if (ha == NULL) {
2004                 /* error */
2005                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2006                 return;
2007         }
2008
2009         /* free ioctl memory */
2010         qla2x00_free_ioctl_mem(ha);
2011
2012         /* free sp pool */
2013         qla2x00_free_sp_pool(ha);
2014
2015         if (ha->sns_cmd)
2016                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2017                     ha->sns_cmd, ha->sns_cmd_dma);
2018
2019         if (ha->ct_sns)
2020                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2021                     ha->ct_sns, ha->ct_sns_dma);
2022
2023         if (ha->ms_iocb)
2024                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2025
2026         if (ha->init_cb)
2027                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2028
2029         if (ha->s_dma_pool)
2030                 dma_pool_destroy(ha->s_dma_pool);
2031
2032         if (ha->gid_list)
2033                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2034                     ha->gid_list_dma);
2035
2036         if (ha->response_ring)
2037                 dma_free_coherent(&ha->pdev->dev,
2038                     (ha->response_q_length + 1) * sizeof(response_t),
2039                     ha->response_ring, ha->response_dma);
2040
2041         if (ha->request_ring)
2042                 dma_free_coherent(&ha->pdev->dev,
2043                     (ha->request_q_length + 1) * sizeof(request_t),
2044                     ha->request_ring, ha->request_dma);
2045
2046         ha->sns_cmd = NULL;
2047         ha->sns_cmd_dma = 0;
2048         ha->ct_sns = NULL;
2049         ha->ct_sns_dma = 0;
2050         ha->ms_iocb = NULL;
2051         ha->ms_iocb_dma = 0;
2052         ha->init_cb = NULL;
2053         ha->init_cb_dma = 0;
2054
2055         ha->s_dma_pool = NULL;
2056
2057         ha->gid_list = NULL;
2058         ha->gid_list_dma = 0;
2059
2060         ha->response_ring = NULL;
2061         ha->response_dma = 0;
2062         ha->request_ring = NULL;
2063         ha->request_dma = 0;
2064
2065         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2066                 fcport = list_entry(fcpl, fc_port_t, list);
2067
2068                 /* fc ports */
2069                 list_del_init(&fcport->list);
2070                 kfree(fcport);
2071         }
2072         INIT_LIST_HEAD(&ha->fcports);
2073
2074         vfree(ha->fw_dump);
2075         vfree(ha->fw_dump_buffer);
2076
2077         ha->fw_dump = NULL;
2078         ha->fw_dumped = 0;
2079         ha->fw_dump_reading = 0;
2080         ha->fw_dump_buffer = NULL;
2081
2082         vfree(ha->optrom_buffer);
2083 }
2084
2085 /*
2086  * qla2x00_allocate_sp_pool
2087  *       This routine is called during initialization to allocate
2088  *       memory for local srb_t.
2089  *
2090  * Input:
2091  *       ha   = adapter block pointer.
2092  *
2093  * Context:
2094  *      Kernel context.
2095  */
2096 static int
2097 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2098 {
2099         int      rval;
2100
2101         rval = QLA_SUCCESS;
2102         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2103         if (ha->srb_mempool == NULL) {
2104                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2105                 rval = QLA_FUNCTION_FAILED;
2106         }
2107         return (rval);
2108 }
2109
2110 /*
2111  *  This routine frees all adapter allocated memory.
2112  *
2113  */
2114 static void
2115 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2116 {
2117         if (ha->srb_mempool) {
2118                 mempool_destroy(ha->srb_mempool);
2119                 ha->srb_mempool = NULL;
2120         }
2121 }
2122
2123 /**************************************************************************
2124 * qla2x00_do_dpc
2125 *   This kernel thread is a task that is schedule by the interrupt handler
2126 *   to perform the background processing for interrupts.
2127 *
2128 * Notes:
2129 * This task always run in the context of a kernel thread.  It
2130 * is kick-off by the driver's detect code and starts up
2131 * up one per adapter. It immediately goes to sleep and waits for
2132 * some fibre event.  When either the interrupt handler or
2133 * the timer routine detects a event it will one of the task
2134 * bits then wake us up.
2135 **************************************************************************/
2136 static int
2137 qla2x00_do_dpc(void *data)
2138 {
2139         scsi_qla_host_t *ha;
2140         fc_port_t       *fcport;
2141         uint8_t         status;
2142         uint16_t        next_loopid;
2143
2144         ha = (scsi_qla_host_t *)data;
2145
2146         set_user_nice(current, -20);
2147
2148         while (!kthread_should_stop()) {
2149                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2150
2151                 set_current_state(TASK_INTERRUPTIBLE);
2152                 schedule();
2153                 __set_current_state(TASK_RUNNING);
2154
2155                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2156
2157                 /* Initialization not yet finished. Don't do anything yet. */
2158                 if (!ha->flags.init_done)
2159                         continue;
2160
2161                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2162
2163                 ha->dpc_active = 1;
2164
2165                 if (ha->flags.mbox_busy) {
2166                         ha->dpc_active = 0;
2167                         continue;
2168                 }
2169
2170                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2171
2172                         DEBUG(printk("scsi(%ld): dpc: sched "
2173                             "qla2x00_abort_isp ha = %p\n",
2174                             ha->host_no, ha));
2175                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2176                             &ha->dpc_flags))) {
2177
2178                                 if (qla2x00_abort_isp(ha)) {
2179                                         /* failed. retry later */
2180                                         set_bit(ISP_ABORT_NEEDED,
2181                                             &ha->dpc_flags);
2182                                 }
2183                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2184                         }
2185                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2186                             ha->host_no));
2187                 }
2188
2189                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2190                         qla2x00_update_fcports(ha);
2191
2192                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2193                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2194                             ha->host_no));
2195                         qla2x00_loop_reset(ha);
2196                 }
2197
2198                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2199                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2200
2201                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2202                             ha->host_no));
2203
2204                         qla2x00_rst_aen(ha);
2205                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2206                 }
2207
2208                 /* Retry each device up to login retry count */
2209                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2210                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2211                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2212
2213                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2214                             ha->host_no));
2215
2216                         next_loopid = 0;
2217                         list_for_each_entry(fcport, &ha->fcports, list) {
2218                                 if (fcport->port_type != FCT_TARGET)
2219                                         continue;
2220
2221                                 /*
2222                                  * If the port is not ONLINE then try to login
2223                                  * to it if we haven't run out of retries.
2224                                  */
2225                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2226                                     fcport->login_retry) {
2227
2228                                         fcport->login_retry--;
2229                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2230                                                 if (fcport->flags &
2231                                                     FCF_TAPE_PRESENT)
2232                                                         ha->isp_ops.fabric_logout(
2233                                                             ha, fcport->loop_id,
2234                                                             fcport->d_id.b.domain,
2235                                                             fcport->d_id.b.area,
2236                                                             fcport->d_id.b.al_pa);
2237                                                 status = qla2x00_fabric_login(
2238                                                     ha, fcport, &next_loopid);
2239                                         } else
2240                                                 status =
2241                                                     qla2x00_local_device_login(
2242                                                         ha, fcport);
2243
2244                                         if (status == QLA_SUCCESS) {
2245                                                 fcport->old_loop_id = fcport->loop_id;
2246
2247                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2248                                                     ha->host_no, fcport->loop_id));
2249
2250                                                 qla2x00_update_fcport(ha,
2251                                                     fcport);
2252                                         } else if (status == 1) {
2253                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2254                                                 /* retry the login again */
2255                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2256                                                     ha->host_no,
2257                                                     fcport->login_retry, fcport->loop_id));
2258                                         } else {
2259                                                 fcport->login_retry = 0;
2260                                         }
2261                                 }
2262                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2263                                         break;
2264                         }
2265                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2266                             ha->host_no));
2267                 }
2268
2269                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2270                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2271
2272                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2273                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2274                             ha->host_no));
2275
2276                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2277
2278                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2279                             ha->host_no));
2280                 }
2281
2282                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2283
2284                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2285                             ha->host_no));
2286
2287                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2288                             &ha->dpc_flags))) {
2289
2290                                 qla2x00_loop_resync(ha);
2291
2292                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2293                         }
2294
2295                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2296                             ha->host_no));
2297                 }
2298
2299                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2300
2301                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2302                             ha->host_no));
2303
2304                         qla2x00_rescan_fcports(ha);
2305
2306                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2307                             "end.\n",
2308                             ha->host_no));
2309                 }
2310
2311                 if (!ha->interrupts_on)
2312                         ha->isp_ops.enable_intrs(ha);
2313
2314                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2315                         ha->isp_ops.beacon_blink(ha);
2316
2317                 ha->dpc_active = 0;
2318         } /* End of while(1) */
2319
2320         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2321
2322         /*
2323          * Make sure that nobody tries to wake us up again.
2324          */
2325         ha->dpc_active = 0;
2326
2327         return 0;
2328 }
2329
2330 void
2331 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2332 {
2333         if (ha->dpc_thread)
2334                 wake_up_process(ha->dpc_thread);
2335 }
2336
2337 /*
2338 *  qla2x00_rst_aen
2339 *      Processes asynchronous reset.
2340 *
2341 * Input:
2342 *      ha  = adapter block pointer.
2343 */
2344 static void
2345 qla2x00_rst_aen(scsi_qla_host_t *ha)
2346 {
2347         if (ha->flags.online && !ha->flags.reset_active &&
2348             !atomic_read(&ha->loop_down_timer) &&
2349             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2350                 do {
2351                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2352
2353                         /*
2354                          * Issue marker command only when we are going to start
2355                          * the I/O.
2356                          */
2357                         ha->marker_needed = 1;
2358                 } while (!atomic_read(&ha->loop_down_timer) &&
2359                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2360         }
2361 }
2362
2363 static void
2364 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2365 {
2366         struct scsi_cmnd *cmd = sp->cmd;
2367
2368         if (sp->flags & SRB_DMA_VALID) {
2369                 if (cmd->use_sg) {
2370                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2371                             cmd->use_sg, cmd->sc_data_direction);
2372                 } else if (cmd->request_bufflen) {
2373                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2374                             cmd->request_bufflen, cmd->sc_data_direction);
2375                 }
2376                 sp->flags &= ~SRB_DMA_VALID;
2377         }
2378         CMD_SP(cmd) = NULL;
2379 }
2380
2381 void
2382 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2383 {
2384         struct scsi_cmnd *cmd = sp->cmd;
2385
2386         qla2x00_sp_free_dma(ha, sp);
2387
2388         mempool_free(sp, ha->srb_mempool);
2389
2390         cmd->scsi_done(cmd);
2391 }
2392
2393 /**************************************************************************
2394 *   qla2x00_timer
2395 *
2396 * Description:
2397 *   One second timer
2398 *
2399 * Context: Interrupt
2400 ***************************************************************************/
2401 static void
2402 qla2x00_timer(scsi_qla_host_t *ha)
2403 {
2404         unsigned long   cpu_flags = 0;
2405         fc_port_t       *fcport;
2406         int             start_dpc = 0;
2407         int             index;
2408         srb_t           *sp;
2409         int             t;
2410
2411         /*
2412          * Ports - Port down timer.
2413          *
2414          * Whenever, a port is in the LOST state we start decrementing its port
2415          * down timer every second until it reaches zero. Once  it reaches zero
2416          * the port it marked DEAD.
2417          */
2418         t = 0;
2419         list_for_each_entry(fcport, &ha->fcports, list) {
2420                 if (fcport->port_type != FCT_TARGET)
2421                         continue;
2422
2423                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2424
2425                         if (atomic_read(&fcport->port_down_timer) == 0)
2426                                 continue;
2427
2428                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2429                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2430
2431                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2432                             "%d remaining\n",
2433                             ha->host_no,
2434                             t, atomic_read(&fcport->port_down_timer)));
2435                 }
2436                 t++;
2437         } /* End of for fcport  */
2438
2439
2440         /* Loop down handler. */
2441         if (atomic_read(&ha->loop_down_timer) > 0 &&
2442             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2443
2444                 if (atomic_read(&ha->loop_down_timer) ==
2445                     ha->loop_down_abort_time) {
2446
2447                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2448                             "queues before time expire\n",
2449                             ha->host_no));
2450
2451                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2452                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2453
2454                         /* Schedule an ISP abort to return any tape commands. */
2455                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2456                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2457                             index++) {
2458                                 fc_port_t *sfcp;
2459
2460                                 sp = ha->outstanding_cmds[index];
2461                                 if (!sp)
2462                                         continue;
2463                                 sfcp = sp->fcport;
2464                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2465                                         continue;
2466
2467                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2468                                 break;
2469                         }
2470                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2471
2472                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2473                         start_dpc++;
2474                 }
2475
2476                 /* if the loop has been down for 4 minutes, reinit adapter */
2477                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2478                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2479                             "restarting queues.\n",
2480                             ha->host_no));
2481
2482                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2483                         start_dpc++;
2484
2485                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2486                                 DEBUG(printk("scsi(%ld): Loop down - "
2487                                     "aborting ISP.\n",
2488                                     ha->host_no));
2489                                 qla_printk(KERN_WARNING, ha,
2490                                     "Loop down - aborting ISP.\n");
2491
2492                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2493                         }
2494                 }
2495                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2496                     ha->host_no,
2497                     atomic_read(&ha->loop_down_timer)));
2498         }
2499
2500         /* Check if beacon LED needs to be blinked */
2501         if (ha->beacon_blink_led == 1) {
2502                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2503                 start_dpc++;
2504         }
2505
2506         /* Schedule the DPC routine if needed */
2507         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2508             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2509             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2510             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2511             start_dpc ||
2512             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2513             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2514             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2515             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2516                 qla2xxx_wake_dpc(ha);
2517
2518         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2519 }
2520
2521 /* XXX(hch): crude hack to emulate a down_timeout() */
2522 int
2523 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2524 {
2525         const unsigned int step = 100; /* msecs */
2526         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2527
2528         do {
2529                 if (!down_trylock(sema))
2530                         return 0;
2531                 if (msleep_interruptible(step))
2532                         break;
2533         } while (--iterations >= 0);
2534
2535         return -ETIMEDOUT;
2536 }
2537
2538 /* Firmware interface routines. */
2539
2540 #define FW_BLOBS        5
2541 #define FW_ISP21XX      0
2542 #define FW_ISP22XX      1
2543 #define FW_ISP2300      2
2544 #define FW_ISP2322      3
2545 #define FW_ISP24XX      4
2546
2547 static DECLARE_MUTEX(qla_fw_lock);
2548
2549 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2550         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2551         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2552         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2553         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2554         { .name = "ql2400_fw.bin", },
2555 };
2556
2557 struct fw_blob *
2558 qla2x00_request_firmware(scsi_qla_host_t *ha)
2559 {
2560         struct fw_blob *blob;
2561
2562         blob = NULL;
2563         if (IS_QLA2100(ha)) {
2564                 blob = &qla_fw_blobs[FW_ISP21XX];
2565         } else if (IS_QLA2200(ha)) {
2566                 blob = &qla_fw_blobs[FW_ISP22XX];
2567         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2568                 blob = &qla_fw_blobs[FW_ISP2300];
2569         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2570                 blob = &qla_fw_blobs[FW_ISP2322];
2571         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2572                 blob = &qla_fw_blobs[FW_ISP24XX];
2573         }
2574
2575         down(&qla_fw_lock);
2576         if (blob->fw)
2577                 goto out;
2578
2579         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2580                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2581                     "(%s).\n", ha->host_no, blob->name));
2582                 blob->fw = NULL;
2583                 blob = NULL;
2584                 goto out;
2585         }
2586
2587 out:
2588         up(&qla_fw_lock);
2589         return blob;
2590 }
2591
2592 static void
2593 qla2x00_release_firmware(void)
2594 {
2595         int idx;
2596
2597         down(&qla_fw_lock);
2598         for (idx = 0; idx < FW_BLOBS; idx++)
2599                 if (qla_fw_blobs[idx].fw)
2600                         release_firmware(qla_fw_blobs[idx].fw);
2601         up(&qla_fw_lock);
2602 }
2603
2604 static struct pci_device_id qla2xxx_pci_tbl[] = {
2605         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2606         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2607         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2608         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2609         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2610         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2611         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2612         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2613         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2614         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2615         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2616         { 0 },
2617 };
2618 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2619
2620 static int __devinit
2621 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2622 {
2623         return qla2x00_probe_one(pdev);
2624 }
2625
2626 static void __devexit
2627 qla2xxx_remove_one(struct pci_dev *pdev)
2628 {
2629         qla2x00_remove_one(pdev);
2630 }
2631
2632 static struct pci_driver qla2xxx_pci_driver = {
2633         .name           = QLA2XXX_DRIVER_NAME,
2634         .driver         = {
2635                 .owner          = THIS_MODULE,
2636         },
2637         .id_table       = qla2xxx_pci_tbl,
2638         .probe          = qla2xxx_probe_one,
2639         .remove         = __devexit_p(qla2xxx_remove_one),
2640 };
2641
2642 static inline int
2643 qla2x00_pci_module_init(void)
2644 {
2645         return pci_module_init(&qla2xxx_pci_driver);
2646 }
2647
2648 static inline void
2649 qla2x00_pci_module_exit(void)
2650 {
2651         pci_unregister_driver(&qla2xxx_pci_driver);
2652 }
2653
2654 /**
2655  * qla2x00_module_init - Module initialization.
2656  **/
2657 static int __init
2658 qla2x00_module_init(void)
2659 {
2660         int ret = 0;
2661
2662         /* Allocate cache for SRBs. */
2663         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2664             SLAB_HWCACHE_ALIGN, NULL, NULL);
2665         if (srb_cachep == NULL) {
2666                 printk(KERN_ERR
2667                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2668                 return -ENOMEM;
2669         }
2670
2671         /* Derive version string. */
2672         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2673 #if DEBUG_QLA2100
2674         strcat(qla2x00_version_str, "-debug");
2675 #endif
2676         qla2xxx_transport_template =
2677             fc_attach_transport(&qla2xxx_transport_functions);
2678         if (!qla2xxx_transport_template)
2679                 return -ENODEV;
2680
2681         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2682         ret = qla2x00_pci_module_init();
2683         if (ret) {
2684                 kmem_cache_destroy(srb_cachep);
2685                 fc_release_transport(qla2xxx_transport_template);
2686         }
2687         return ret;
2688 }
2689
2690 /**
2691  * qla2x00_module_exit - Module cleanup.
2692  **/
2693 static void __exit
2694 qla2x00_module_exit(void)
2695 {
2696         qla2x00_pci_module_exit();
2697         qla2x00_release_firmware();
2698         kmem_cache_destroy(srb_cachep);
2699         fc_release_transport(qla2xxx_transport_template);
2700 }
2701
2702 module_init(qla2x00_module_init);
2703 module_exit(qla2x00_module_exit);
2704
2705 MODULE_AUTHOR("QLogic Corporation");
2706 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2707 MODULE_LICENSE("GPL");
2708 MODULE_VERSION(QLA2XXX_VERSION);