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/smp_lock.h>
  12 #include <linux/delay.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 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
  58 int ql2xfwloadflash;
  59 module_param(ql2xfwloadflash, int, S_IRUGO|S_IRUSR);
  60 MODULE_PARM_DESC(ql2xfwloadflash,
  61                 "Load ISP24xx firmware image from FLASH (onboard memory).");
  62 #endif
  63
  64 static void qla2x00_free_device(scsi_qla_host_t *);
  65
  66 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  67
  68 int ql2xfdmienable;
  69 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  70 MODULE_PARM_DESC(ql2xfdmienable,
  71                 "Enables FDMI registratons "
  72                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  73
  74 int ql2xprocessrscn;
  75 module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xprocessrscn,
  77                 "Option to enable port RSCN handling via a series of less"
  78                 "fabric intrusive ADISCs and PLOGIs.");
  79
  80 /*
  81  * SCSI host template entry points
  82  */
  83 static int qla2xxx_slave_configure(struct scsi_device * device);
  84 static int qla2xxx_slave_alloc(struct scsi_device *);
  85 static void qla2xxx_slave_destroy(struct scsi_device *);
  86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  87                 void (*fn)(struct scsi_cmnd *));
  88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  89                 void (*fn)(struct scsi_cmnd *));
  90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  96
  97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  98 static int qla2x00_change_queue_type(struct scsi_device *, int);
  99
 100 static struct scsi_host_template qla2x00_driver_template = {
 101         .module                 = THIS_MODULE,
 102         .name                   = "qla2xxx",
 103         .queuecommand           = qla2x00_queuecommand,
 104
 105         .eh_abort_handler       = qla2xxx_eh_abort,
 106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 109
 110         .slave_configure        = qla2xxx_slave_configure,
 111
 112         .slave_alloc            = qla2xxx_slave_alloc,
 113         .slave_destroy          = qla2xxx_slave_destroy,
 114         .change_queue_depth     = qla2x00_change_queue_depth,
 115         .change_queue_type      = qla2x00_change_queue_type,
 116         .this_id                = -1,
 117         .cmd_per_lun            = 3,
 118         .use_clustering         = ENABLE_CLUSTERING,
 119         .sg_tablesize           = SG_ALL,
 120
 121         /*
 122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 123          * which equates to 0x800000 sectors.
 124          */
 125         .max_sectors            = 0xFFFF,
 126         .shost_attrs            = qla2x00_host_attrs,
 127 };
 128
 129 static struct scsi_host_template qla24xx_driver_template = {
 130         .module                 = THIS_MODULE,
 131         .name                   = "qla2xxx",
 132         .queuecommand           = qla24xx_queuecommand,
 133
 134         .eh_abort_handler       = qla2xxx_eh_abort,
 135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 138
 139         .slave_configure        = qla2xxx_slave_configure,
 140
 141         .slave_alloc            = qla2xxx_slave_alloc,
 142         .slave_destroy          = qla2xxx_slave_destroy,
 143         .change_queue_depth     = qla2x00_change_queue_depth,
 144         .change_queue_type      = qla2x00_change_queue_type,
 145         .this_id                = -1,
 146         .cmd_per_lun            = 3,
 147         .use_clustering         = ENABLE_CLUSTERING,
 148         .sg_tablesize           = SG_ALL,
 149
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 155
 156 /* TODO Convert to inlines
 157  *
 158  * Timer routines
 159  */
 160 #define WATCH_INTERVAL          1       /* number of seconds */
 161
 162 static void qla2x00_timer(scsi_qla_host_t *);
 163
 164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 165     void *, unsigned long);
 166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 168
 169 static inline void
 170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 171 {
 172         init_timer(&ha->timer);
 173         ha->timer.expires = jiffies + interval * HZ;
 174         ha->timer.data = (unsigned long)ha;
 175         ha->timer.function = (void (*)(unsigned long))func;
 176         add_timer(&ha->timer);
 177         ha->timer_active = 1;
 178 }
 179
 180 static inline void
 181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 182 {
 183         mod_timer(&ha->timer, jiffies + interval * HZ);
 184 }
 185
 186 static __inline__ void
 187 qla2x00_stop_timer(scsi_qla_host_t *ha)
 188 {
 189         del_timer_sync(&ha->timer);
 190         ha->timer_active = 0;
 191 }
 192
 193 static int qla2x00_do_dpc(void *data);
 194
 195 static void qla2x00_rst_aen(scsi_qla_host_t *);
 196
 197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 203
 204 /* -------------------------------------------------------------------------- */
 205
 206 static char *
 207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 208 {
 209         static char *pci_bus_modes[] = {
 210                 "33", "66", "100", "133",
 211         };
 212         uint16_t pci_bus;
 213
 214         strcpy(str, "PCI");
 215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 216         if (pci_bus) {
 217                 strcat(str, "-X (");
 218                 strcat(str, pci_bus_modes[pci_bus]);
 219         } else {
 220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 221                 strcat(str, " (");
 222                 strcat(str, pci_bus_modes[pci_bus]);
 223         }
 224         strcat(str, " MHz)");
 225
 226         return (str);
 227 }
 228
 229 static char *
 230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 231 {
 232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 233         uint32_t pci_bus;
 234         int pcie_reg;
 235
 236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 237         if (pcie_reg) {
 238                 char lwstr[6];
 239                 uint16_t pcie_lstat, lspeed, lwidth;
 240
 241                 pcie_reg += 0x12;
 242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 244                 lwidth = (pcie_lstat &
 245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 246
 247                 strcpy(str, "PCIe (");
 248                 if (lspeed == 1)
 249                         strcat(str, "2.5Gb/s ");
 250                 else
 251                         strcat(str, "<unknown> ");
 252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 253                 strcat(str, lwstr);
 254
 255                 return str;
 256         }
 257
 258         strcpy(str, "PCI");
 259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 260         if (pci_bus == 0 || pci_bus == 8) {
 261                 strcat(str, " (");
 262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 263         } else {
 264                 strcat(str, "-X ");
 265                 if (pci_bus & BIT_2)
 266                         strcat(str, "Mode 2");
 267                 else
 268                         strcat(str, "Mode 1");
 269                 strcat(str, " (");
 270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 271         }
 272         strcat(str, " MHz)");
 273
 274         return str;
 275 }
 276
 277 char *
 278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 279 {
 280         char un_str[10];
 281
 282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 283             ha->fw_minor_version,
 284             ha->fw_subminor_version);
 285
 286         if (ha->fw_attributes & BIT_9) {
 287                 strcat(str, "FLX");
 288                 return (str);
 289         }
 290
 291         switch (ha->fw_attributes & 0xFF) {
 292         case 0x7:
 293                 strcat(str, "EF");
 294                 break;
 295         case 0x17:
 296                 strcat(str, "TP");
 297                 break;
 298         case 0x37:
 299                 strcat(str, "IP");
 300                 break;
 301         case 0x77:
 302                 strcat(str, "VI");
 303                 break;
 304         default:
 305                 sprintf(un_str, "(%x)", ha->fw_attributes);
 306                 strcat(str, un_str);
 307                 break;
 308         }
 309         if (ha->fw_attributes & 0x100)
 310                 strcat(str, "X");
 311
 312         return (str);
 313 }
 314
 315 char *
 316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 317 {
 318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 319             ha->fw_minor_version,
 320             ha->fw_subminor_version);
 321
 322         if (ha->fw_attributes & BIT_0)
 323                 strcat(str, "[Class 2] ");
 324         if (ha->fw_attributes & BIT_1)
 325                 strcat(str, "[IP] ");
 326         if (ha->fw_attributes & BIT_2)
 327                 strcat(str, "[Multi-ID] ");
 328         if (ha->fw_attributes & BIT_13)
 329                 strcat(str, "[Experimental]");
 330         return str;
 331 }
 332
 333 static inline srb_t *
 334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 336 {
 337         srb_t *sp;
 338
 339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 340         if (!sp)
 341                 return sp;
 342
 343         atomic_set(&sp->ref_count, 1);
 344         sp->ha = ha;
 345         sp->fcport = fcport;
 346         sp->cmd = cmd;
 347         sp->flags = 0;
 348         CMD_SP(cmd) = (void *)sp;
 349         cmd->scsi_done = done;
 350
 351         return sp;
 352 }
 353
 354 static int
 355 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 356 {
 357         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 358         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 359         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 360         srb_t *sp;
 361         int rval;
 362
 363         rval = fc_remote_port_chkready(rport);
 364         if (rval) {
 365                 cmd->result = rval;
 366                 goto qc_fail_command;
 367         }
 368
 369         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 370                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 371                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 372                         cmd->result = DID_NO_CONNECT << 16;
 373                         goto qc_fail_command;
 374                 }
 375                 goto qc_host_busy;
 376         }
 377
 378         spin_unlock_irq(ha->host->host_lock);
 379
 380         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 381         if (!sp)
 382                 goto qc_host_busy_lock;
 383
 384         rval = qla2x00_start_scsi(sp);
 385         if (rval != QLA_SUCCESS)
 386                 goto qc_host_busy_free_sp;
 387
 388         spin_lock_irq(ha->host->host_lock);
 389
 390         return 0;
 391
 392 qc_host_busy_free_sp:
 393         qla2x00_sp_free_dma(ha, sp);
 394         mempool_free(sp, ha->srb_mempool);
 395
 396 qc_host_busy_lock:
 397         spin_lock_irq(ha->host->host_lock);
 398
 399 qc_host_busy:
 400         return SCSI_MLQUEUE_HOST_BUSY;
 401
 402 qc_fail_command:
 403         done(cmd);
 404
 405         return 0;
 406 }
 407
 408
 409 static int
 410 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 411 {
 412         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 413         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 414         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 415         srb_t *sp;
 416         int rval;
 417
 418         rval = fc_remote_port_chkready(rport);
 419         if (rval) {
 420                 cmd->result = rval;
 421                 goto qc24_fail_command;
 422         }
 423
 424         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 425                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 426                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 427                         cmd->result = DID_NO_CONNECT << 16;
 428                         goto qc24_fail_command;
 429                 }
 430                 goto qc24_host_busy;
 431         }
 432
 433         spin_unlock_irq(ha->host->host_lock);
 434
 435         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 436         if (!sp)
 437                 goto qc24_host_busy_lock;
 438
 439         rval = qla24xx_start_scsi(sp);
 440         if (rval != QLA_SUCCESS)
 441                 goto qc24_host_busy_free_sp;
 442
 443         spin_lock_irq(ha->host->host_lock);
 444
 445         return 0;
 446
 447 qc24_host_busy_free_sp:
 448         qla2x00_sp_free_dma(ha, sp);
 449         mempool_free(sp, ha->srb_mempool);
 450
 451 qc24_host_busy_lock:
 452         spin_lock_irq(ha->host->host_lock);
 453
 454 qc24_host_busy:
 455         return SCSI_MLQUEUE_HOST_BUSY;
 456
 457 qc24_fail_command:
 458         done(cmd);
 459
 460         return 0;
 461 }
 462
 463
 464 /*
 465  * qla2x00_eh_wait_on_command
 466  *    Waits for the command to be returned by the Firmware for some
 467  *    max time.
 468  *
 469  * Input:
 470  *    ha = actual ha whose done queue will contain the command
 471  *            returned by firmware.
 472  *    cmd = Scsi Command to wait on.
 473  *    flag = Abort/Reset(Bus or Device Reset)
 474  *
 475  * Return:
 476  *    Not Found : 0
 477  *    Found : 1
 478  */
 479 static int
 480 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 481 {
 482 #define ABORT_POLLING_PERIOD    1000
 483 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 484         unsigned long wait_iter = ABORT_WAIT_ITER;
 485         int ret = QLA_SUCCESS;
 486
 487         while (CMD_SP(cmd)) {
 488                 msleep(ABORT_POLLING_PERIOD);
 489
 490                 if (--wait_iter)
 491                         break;
 492         }
 493         if (CMD_SP(cmd))
 494                 ret = QLA_FUNCTION_FAILED;
 495
 496         return ret;
 497 }
 498
 499 /*
 500  * qla2x00_wait_for_hba_online
 501  *    Wait till the HBA is online after going through
 502  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 503  *    finally HBA is disabled ie marked offline
 504  *
 505  * Input:
 506  *     ha - pointer to host adapter structure
 507  *
 508  * Note:
 509  *    Does context switching-Release SPIN_LOCK
 510  *    (if any) before calling this routine.
 511  *
 512  * Return:
 513  *    Success (Adapter is online) : 0
 514  *    Failed  (Adapter is offline/disabled) : 1
 515  */
 516 static int
 517 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 518 {
 519         int             return_status;
 520         unsigned long   wait_online;
 521
 522         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 523         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 524             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 525             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 526             ha->dpc_active) && time_before(jiffies, wait_online)) {
 527
 528                 msleep(1000);
 529         }
 530         if (ha->flags.online)
 531                 return_status = QLA_SUCCESS;
 532         else
 533                 return_status = QLA_FUNCTION_FAILED;
 534
 535         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 536
 537         return (return_status);
 538 }
 539
 540 /*
 541  * qla2x00_wait_for_loop_ready
 542  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 543  *    to be in LOOP_READY state.
 544  * Input:
 545  *     ha - pointer to host adapter structure
 546  *
 547  * Note:
 548  *    Does context switching-Release SPIN_LOCK
 549  *    (if any) before calling this routine.
 550  *
 551  *
 552  * Return:
 553  *    Success (LOOP_READY) : 0
 554  *    Failed  (LOOP_NOT_READY) : 1
 555  */
 556 static inline int
 557 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 558 {
 559         int      return_status = QLA_SUCCESS;
 560         unsigned long loop_timeout ;
 561
 562         /* wait for 5 min at the max for loop to be ready */
 563         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 564
 565         while ((!atomic_read(&ha->loop_down_timer) &&
 566             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 567             atomic_read(&ha->loop_state) != LOOP_READY) {
 568                 msleep(1000);
 569                 if (time_after_eq(jiffies, loop_timeout)) {
 570                         return_status = QLA_FUNCTION_FAILED;
 571                         break;
 572                 }
 573         }
 574         return (return_status);
 575 }
 576
 577 /**************************************************************************
 578 * qla2xxx_eh_abort
 579 *
 580 * Description:
 581 *    The abort function will abort the specified command.
 582 *
 583 * Input:
 584 *    cmd = Linux SCSI command packet to be aborted.
 585 *
 586 * Returns:
 587 *    Either SUCCESS or FAILED.
 588 *
 589 * Note:
 590 **************************************************************************/
 591 int
 592 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 593 {
 594         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 595         srb_t *sp;
 596         int ret, i;
 597         unsigned int id, lun;
 598         unsigned long serial;
 599         unsigned long flags;
 600
 601         if (!CMD_SP(cmd))
 602                 return FAILED;
 603
 604         ret = FAILED;
 605
 606         id = cmd->device->id;
 607         lun = cmd->device->lun;
 608         serial = cmd->serial_number;
 609
 610         /* Check active list for command command. */
 611         spin_lock_irqsave(&ha->hardware_lock, flags);
 612         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 613                 sp = ha->outstanding_cmds[i];
 614
 615                 if (sp == NULL)
 616                         continue;
 617
 618                 if (sp->cmd != cmd)
 619                         continue;
 620
 621                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 622                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 623                     sp->state));
 624                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 625
 626                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 627                 if (ha->isp_ops.abort_command(ha, sp)) {
 628                         DEBUG2(printk("%s(%ld): abort_command "
 629                             "mbx failed.\n", __func__, ha->host_no));
 630                 } else {
 631                         DEBUG3(printk("%s(%ld): abort_command "
 632                             "mbx success.\n", __func__, ha->host_no));
 633                         ret = SUCCESS;
 634                 }
 635                 spin_lock_irqsave(&ha->hardware_lock, flags);
 636
 637                 break;
 638         }
 639         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 640
 641         /* Wait for the command to be returned. */
 642         if (ret == SUCCESS) {
 643                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 644                         qla_printk(KERN_ERR, ha,
 645                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 646                             "%x.\n", ha->host_no, id, lun, serial, ret);
 647                 }
 648         }
 649
 650         qla_printk(KERN_INFO, ha,
 651             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 652             id, lun, serial, ret);
 653
 654         return ret;
 655 }
 656
 657 /**************************************************************************
 658 * qla2x00_eh_wait_for_pending_target_commands
 659 *
 660 * Description:
 661 *    Waits for all the commands to come back from the specified target.
 662 *
 663 * Input:
 664 *    ha - pointer to scsi_qla_host structure.
 665 *    t  - target
 666 * Returns:
 667 *    Either SUCCESS or FAILED.
 668 *
 669 * Note:
 670 **************************************************************************/
 671 static int
 672 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 673 {
 674         int     cnt;
 675         int     status;
 676         srb_t           *sp;
 677         struct scsi_cmnd *cmd;
 678         unsigned long flags;
 679
 680         status = 0;
 681
 682         /*
 683          * Waiting for all commands for the designated target in the active
 684          * array
 685          */
 686         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 687                 spin_lock_irqsave(&ha->hardware_lock, flags);
 688                 sp = ha->outstanding_cmds[cnt];
 689                 if (sp) {
 690                         cmd = sp->cmd;
 691                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 692                         if (cmd->device->id == t) {
 693                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 694                                         status = 1;
 695                                         break;
 696                                 }
 697                         }
 698                 } else {
 699                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 700                 }
 701         }
 702         return (status);
 703 }
 704
 705
 706 /**************************************************************************
 707 * qla2xxx_eh_device_reset
 708 *
 709 * Description:
 710 *    The device reset function will reset the target and abort any
 711 *    executing commands.
 712 *
 713 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 714 *          attempt to use this value, even if you determine it is
 715 *          non-null.
 716 *
 717 * Input:
 718 *    cmd = Linux SCSI command packet of the command that cause the
 719 *          bus device reset.
 720 *
 721 * Returns:
 722 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 723 *
 724 **************************************************************************/
 725 int
 726 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 727 {
 728         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 729         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 730         srb_t *sp;
 731         int ret;
 732         unsigned int id, lun;
 733         unsigned long serial;
 734
 735         ret = FAILED;
 736
 737         id = cmd->device->id;
 738         lun = cmd->device->lun;
 739         serial = cmd->serial_number;
 740
 741         sp = (srb_t *) CMD_SP(cmd);
 742         if (!sp || !fcport)
 743                 return ret;
 744
 745         qla_printk(KERN_INFO, ha,
 746             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 747
 748         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 749                 goto eh_dev_reset_done;
 750
 751         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 752                 if (qla2x00_device_reset(ha, fcport) == 0)
 753                         ret = SUCCESS;
 754
 755 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 756                 if (ret == SUCCESS) {
 757                         if (fcport->flags & FC_FABRIC_DEVICE) {
 758                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 759                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 760                         }
 761                 }
 762 #endif
 763         } else {
 764                 DEBUG2(printk(KERN_INFO
 765                     "%s failed: loop not ready\n",__func__);)
 766         }
 767
 768         if (ret == FAILED) {
 769                 DEBUG3(printk("%s(%ld): device reset failed\n",
 770                     __func__, ha->host_no));
 771                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 772                     __func__);
 773
 774                 goto eh_dev_reset_done;
 775         }
 776
 777         /* Flush outstanding commands. */
 778         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 779                 ret = FAILED;
 780         if (ret == FAILED) {
 781                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 782                     __func__, ha->host_no));
 783                 qla_printk(KERN_INFO, ha,
 784                     "%s: failed while waiting for commands\n", __func__);
 785         } else
 786                 qla_printk(KERN_INFO, ha,
 787                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 788                     id, lun);
 789  eh_dev_reset_done:
 790         return ret;
 791 }
 792
 793 /**************************************************************************
 794 * qla2x00_eh_wait_for_pending_commands
 795 *
 796 * Description:
 797 *    Waits for all the commands to come back from the specified host.
 798 *
 799 * Input:
 800 *    ha - pointer to scsi_qla_host structure.
 801 *
 802 * Returns:
 803 *    1 : SUCCESS
 804 *    0 : FAILED
 805 *
 806 * Note:
 807 **************************************************************************/
 808 static int
 809 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 810 {
 811         int     cnt;
 812         int     status;
 813         srb_t           *sp;
 814         struct scsi_cmnd *cmd;
 815         unsigned long flags;
 816
 817         status = 1;
 818
 819         /*
 820          * Waiting for all commands for the designated target in the active
 821          * array
 822          */
 823         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 824                 spin_lock_irqsave(&ha->hardware_lock, flags);
 825                 sp = ha->outstanding_cmds[cnt];
 826                 if (sp) {
 827                         cmd = sp->cmd;
 828                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 829                         status = qla2x00_eh_wait_on_command(ha, cmd);
 830                         if (status == 0)
 831                                 break;
 832                 }
 833                 else {
 834                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 835                 }
 836         }
 837         return (status);
 838 }
 839
 840
 841 /**************************************************************************
 842 * qla2xxx_eh_bus_reset
 843 *
 844 * Description:
 845 *    The bus reset function will reset the bus and abort any executing
 846 *    commands.
 847 *
 848 * Input:
 849 *    cmd = Linux SCSI command packet of the command that cause the
 850 *          bus reset.
 851 *
 852 * Returns:
 853 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 854 *
 855 **************************************************************************/
 856 int
 857 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 858 {
 859         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 860         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 861         srb_t *sp;
 862         int ret;
 863         unsigned int id, lun;
 864         unsigned long serial;
 865
 866         ret = FAILED;
 867
 868         id = cmd->device->id;
 869         lun = cmd->device->lun;
 870         serial = cmd->serial_number;
 871
 872         sp = (srb_t *) CMD_SP(cmd);
 873         if (!sp || !fcport)
 874                 return ret;
 875
 876         qla_printk(KERN_INFO, ha,
 877             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 878
 879         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 880                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 881                 goto eh_bus_reset_done;
 882         }
 883
 884         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 885                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 886                         ret = SUCCESS;
 887         }
 888         if (ret == FAILED)
 889                 goto eh_bus_reset_done;
 890
 891         /* Flush outstanding commands. */
 892         if (!qla2x00_eh_wait_for_pending_commands(ha))
 893                 ret = FAILED;
 894
 895 eh_bus_reset_done:
 896         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 897             (ret == FAILED) ? "failed" : "succeded");
 898
 899         return ret;
 900 }
 901
 902 /**************************************************************************
 903 * qla2xxx_eh_host_reset
 904 *
 905 * Description:
 906 *    The reset function will reset the Adapter.
 907 *
 908 * Input:
 909 *      cmd = Linux SCSI command packet of the command that cause the
 910 *            adapter reset.
 911 *
 912 * Returns:
 913 *      Either SUCCESS or FAILED.
 914 *
 915 * Note:
 916 **************************************************************************/
 917 int
 918 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 919 {
 920         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 921         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 922         srb_t *sp;
 923         int ret;
 924         unsigned int id, lun;
 925         unsigned long serial;
 926
 927         ret = FAILED;
 928
 929         id = cmd->device->id;
 930         lun = cmd->device->lun;
 931         serial = cmd->serial_number;
 932
 933         sp = (srb_t *) CMD_SP(cmd);
 934         if (!sp || !fcport)
 935                 return ret;
 936
 937         qla_printk(KERN_INFO, ha,
 938             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 939
 940         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 941                 goto eh_host_reset_lock;
 942
 943         /*
 944          * Fixme-may be dpc thread is active and processing
 945          * loop_resync,so wait a while for it to
 946          * be completed and then issue big hammer.Otherwise
 947          * it may cause I/O failure as big hammer marks the
 948          * devices as lost kicking of the port_down_timer
 949          * while dpc is stuck for the mailbox to complete.
 950          */
 951         qla2x00_wait_for_loop_ready(ha);
 952         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 953         if (qla2x00_abort_isp(ha)) {
 954                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 955                 /* failed. schedule dpc to try */
 956                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 957
 958                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 959                         goto eh_host_reset_lock;
 960         }
 961         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 962
 963         /* Waiting for our command in done_queue to be returned to OS.*/
 964         if (qla2x00_eh_wait_for_pending_commands(ha))
 965                 ret = SUCCESS;
 966
 967 eh_host_reset_lock:
 968         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 969             (ret == FAILED) ? "failed" : "succeded");
 970
 971         return ret;
 972 }
 973
 974 /*
 975 * qla2x00_loop_reset
 976 *      Issue loop reset.
 977 *
 978 * Input:
 979 *      ha = adapter block pointer.
 980 *
 981 * Returns:
 982 *      0 = success
 983 */
 984 static int
 985 qla2x00_loop_reset(scsi_qla_host_t *ha)
 986 {
 987         int status = QLA_SUCCESS;
 988         struct fc_port *fcport;
 989
 990         if (ha->flags.enable_lip_reset) {
 991                 status = qla2x00_lip_reset(ha);
 992         }
 993
 994         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
 995                 list_for_each_entry(fcport, &ha->fcports, list) {
 996                         if (fcport->port_type != FCT_TARGET)
 997                                 continue;
 998
 999                         status = qla2x00_device_reset(ha, fcport);
1000                         if (status != QLA_SUCCESS)
1001                                 break;
1002                 }
1003         }
1004
1005         if (status == QLA_SUCCESS &&
1006                 ((!ha->flags.enable_target_reset &&
1007                   !ha->flags.enable_lip_reset) ||
1008                 ha->flags.enable_lip_full_login)) {
1009
1010                 status = qla2x00_full_login_lip(ha);
1011         }
1012
1013         /* Issue marker command only when we are going to start the I/O */
1014         ha->marker_needed = 1;
1015
1016         if (status) {
1017                 /* Empty */
1018                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1019                                 __func__,
1020                                 ha->host_no);)
1021         } else {
1022                 /* Empty */
1023                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1024                                 __func__,
1025                                 ha->host_no);)
1026         }
1027
1028         return(status);
1029 }
1030
1031 /*
1032  * qla2x00_device_reset
1033  *      Issue bus device reset message to the target.
1034  *
1035  * Input:
1036  *      ha = adapter block pointer.
1037  *      t = SCSI ID.
1038  *      TARGET_QUEUE_LOCK must be released.
1039  *      ADAPTER_STATE_LOCK must be released.
1040  *
1041  * Context:
1042  *      Kernel context.
1043  */
1044 static int
1045 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1046 {
1047         /* Abort Target command will clear Reservation */
1048         return ha->isp_ops.abort_target(reset_fcport);
1049 }
1050
1051 static int
1052 qla2xxx_slave_alloc(struct scsi_device *sdev)
1053 {
1054         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1055
1056         if (!rport || fc_remote_port_chkready(rport))
1057                 return -ENXIO;
1058
1059         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1060
1061         return 0;
1062 }
1063
1064 static int
1065 qla2xxx_slave_configure(struct scsi_device *sdev)
1066 {
1067         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1068         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1069
1070         if (sdev->tagged_supported)
1071                 scsi_activate_tcq(sdev, 32);
1072         else
1073                 scsi_deactivate_tcq(sdev, 32);
1074
1075         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1076
1077         return 0;
1078 }
1079
1080 static void
1081 qla2xxx_slave_destroy(struct scsi_device *sdev)
1082 {
1083         sdev->hostdata = NULL;
1084 }
1085
1086 static int
1087 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1088 {
1089         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1090         return sdev->queue_depth;
1091 }
1092
1093 static int
1094 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1095 {
1096         if (sdev->tagged_supported) {
1097                 scsi_set_tag_type(sdev, tag_type);
1098                 if (tag_type)
1099                         scsi_activate_tcq(sdev, sdev->queue_depth);
1100                 else
1101                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1102         } else
1103                 tag_type = 0;
1104
1105         return tag_type;
1106 }
1107
1108 /**
1109  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1110  * @ha: HA context
1111  *
1112  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1113  * supported addressing method.
1114  */
1115 static void
1116 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1117 {
1118         /* Assume a 32bit DMA mask. */
1119         ha->flags.enable_64bit_addressing = 0;
1120
1121         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1122                 /* Any upper-dword bits set? */
1123                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1124                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1125                         /* Ok, a 64bit DMA mask is applicable. */
1126                         ha->flags.enable_64bit_addressing = 1;
1127                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1128                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1129                         return;
1130                 }
1131         }
1132
1133         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1134         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1135 }
1136
1137 static int
1138 qla2x00_iospace_config(scsi_qla_host_t *ha)
1139 {
1140         unsigned long   pio, pio_len, pio_flags;
1141         unsigned long   mmio, mmio_len, mmio_flags;
1142
1143         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1144         pio = pci_resource_start(ha->pdev, 0);
1145         pio_len = pci_resource_len(ha->pdev, 0);
1146         pio_flags = pci_resource_flags(ha->pdev, 0);
1147         if (pio_flags & IORESOURCE_IO) {
1148                 if (pio_len < MIN_IOBASE_LEN) {
1149                         qla_printk(KERN_WARNING, ha,
1150                             "Invalid PCI I/O region size (%s)...\n",
1151                                 pci_name(ha->pdev));
1152                         pio = 0;
1153                 }
1154         } else {
1155                 qla_printk(KERN_WARNING, ha,
1156                     "region #0 not a PIO resource (%s)...\n",
1157                     pci_name(ha->pdev));
1158                 pio = 0;
1159         }
1160
1161         /* Use MMIO operations for all accesses. */
1162         mmio = pci_resource_start(ha->pdev, 1);
1163         mmio_len = pci_resource_len(ha->pdev, 1);
1164         mmio_flags = pci_resource_flags(ha->pdev, 1);
1165
1166         if (!(mmio_flags & IORESOURCE_MEM)) {
1167                 qla_printk(KERN_ERR, ha,
1168                     "region #0 not an MMIO resource (%s), aborting\n",
1169                     pci_name(ha->pdev));
1170                 goto iospace_error_exit;
1171         }
1172         if (mmio_len < MIN_IOBASE_LEN) {
1173                 qla_printk(KERN_ERR, ha,
1174                     "Invalid PCI mem region size (%s), aborting\n",
1175                         pci_name(ha->pdev));
1176                 goto iospace_error_exit;
1177         }
1178
1179         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1180                 qla_printk(KERN_WARNING, ha,
1181                     "Failed to reserve PIO/MMIO regions (%s)\n",
1182                     pci_name(ha->pdev));
1183
1184                 goto iospace_error_exit;
1185         }
1186
1187         ha->pio_address = pio;
1188         ha->pio_length = pio_len;
1189         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1190         if (!ha->iobase) {
1191                 qla_printk(KERN_ERR, ha,
1192                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1193
1194                 goto iospace_error_exit;
1195         }
1196
1197         return (0);
1198
1199 iospace_error_exit:
1200         return (-ENOMEM);
1201 }
1202
1203 static void
1204 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1205 {
1206         unsigned long flags = 0;
1207         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1208
1209         spin_lock_irqsave(&ha->hardware_lock, flags);
1210         ha->interrupts_on = 1;
1211         /* enable risc and host interrupts */
1212         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1213         RD_REG_WORD(&reg->ictrl);
1214         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1215
1216 }
1217
1218 static void
1219 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1220 {
1221         unsigned long flags = 0;
1222         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1223
1224         spin_lock_irqsave(&ha->hardware_lock, flags);
1225         ha->interrupts_on = 0;
1226         /* disable risc and host interrupts */
1227         WRT_REG_WORD(&reg->ictrl, 0);
1228         RD_REG_WORD(&reg->ictrl);
1229         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1230 }
1231
1232 static void
1233 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1234 {
1235         unsigned long flags = 0;
1236         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1237
1238         spin_lock_irqsave(&ha->hardware_lock, flags);
1239         ha->interrupts_on = 1;
1240         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1241         RD_REG_DWORD(&reg->ictrl);
1242         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1243 }
1244
1245 static void
1246 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1247 {
1248         unsigned long flags = 0;
1249         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1250
1251         spin_lock_irqsave(&ha->hardware_lock, flags);
1252         ha->interrupts_on = 0;
1253         WRT_REG_DWORD(&reg->ictrl, 0);
1254         RD_REG_DWORD(&reg->ictrl);
1255         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1256 }
1257
1258 /*
1259  * PCI driver interface
1260  */
1261 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1262 {
1263         int     ret = -ENODEV;
1264         device_reg_t __iomem *reg;
1265         struct Scsi_Host *host;
1266         scsi_qla_host_t *ha;
1267         unsigned long   flags = 0;
1268         unsigned long   wait_switch = 0;
1269         char pci_info[20];
1270         char fw_str[30];
1271         fc_port_t *fcport;
1272         struct scsi_host_template *sht;
1273
1274         if (pci_enable_device(pdev))
1275                 goto probe_out;
1276
1277         sht = &qla2x00_driver_template;
1278         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1279             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1280                 sht = &qla24xx_driver_template;
1281         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1282         if (host == NULL) {
1283                 printk(KERN_WARNING
1284                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1285                 goto probe_disable_device;
1286         }
1287
1288         /* Clear our data area */
1289         ha = (scsi_qla_host_t *)host->hostdata;
1290         memset(ha, 0, sizeof(scsi_qla_host_t));
1291
1292         ha->pdev = pdev;
1293         ha->host = host;
1294         ha->host_no = host->host_no;
1295         ha->brd_info = brd_info;
1296         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1297
1298         ha->dpc_pid = -1;
1299
1300         /* Configure PCI I/O space */
1301         ret = qla2x00_iospace_config(ha);
1302         if (ret)
1303                 goto probe_failed;
1304
1305         qla_printk(KERN_INFO, ha,
1306             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1307             ha->iobase);
1308
1309         spin_lock_init(&ha->hardware_lock);
1310
1311         ha->prev_topology = 0;
1312         ha->ports = MAX_BUSES;
1313         ha->init_cb_size = sizeof(init_cb_t);
1314         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1315         ha->link_data_rate = LDR_UNKNOWN;
1316
1317         /* Assign ISP specific operations. */
1318         ha->isp_ops.pci_config          = qla2100_pci_config;
1319         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1320         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1321         ha->isp_ops.config_rings        = qla2x00_config_rings;
1322         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1323         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1324         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1325         ha->isp_ops.load_risc           = qla2x00_load_risc;
1326         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1327         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1328         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1329         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1330         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1331         ha->isp_ops.abort_command       = qla2x00_abort_command;
1332         ha->isp_ops.abort_target        = qla2x00_abort_target;
1333         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1334         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1335         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1336         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1337         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1338         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1339         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1340         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1341         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1342         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1343         if (IS_QLA2100(ha)) {
1344                 host->max_id = MAX_TARGETS_2100;
1345                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1346                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1347                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1348                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1349                 host->sg_tablesize = 32;
1350                 ha->gid_list_info_size = 4;
1351         } else if (IS_QLA2200(ha)) {
1352                 host->max_id = MAX_TARGETS_2200;
1353                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1354                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1355                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1356                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1357                 ha->gid_list_info_size = 4;
1358         } else if (IS_QLA23XX(ha)) {
1359                 host->max_id = MAX_TARGETS_2200;
1360                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1361                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1362                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1363                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1364                 ha->isp_ops.pci_config = qla2300_pci_config;
1365                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1366                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1367                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1368                 ha->gid_list_info_size = 6;
1369         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1370                 host->max_id = MAX_TARGETS_2200;
1371                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1372                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1373                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1374                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1375                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1376                 ha->mgmt_svr_loop_id = 10;
1377                 ha->isp_ops.pci_config = qla24xx_pci_config;
1378                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1379                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1380                 ha->isp_ops.config_rings = qla24xx_config_rings;
1381                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1382                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1383                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1384                 ha->isp_ops.load_risc = qla24xx_load_risc;
1385 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1386                 if (ql2xfwloadflash)
1387                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1388 #endif
1389                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1390                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1391                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1392                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1393                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1394                 ha->isp_ops.abort_command = qla24xx_abort_command;
1395                 ha->isp_ops.abort_target = qla24xx_abort_target;
1396                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1397                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1398                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1399                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1400                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1401                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1402                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1403                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1404                 ha->gid_list_info_size = 8;
1405         }
1406         host->can_queue = ha->request_q_length + 128;
1407
1408         /* load the F/W, read paramaters, and init the H/W */
1409         ha->instance = num_hosts;
1410
1411         init_MUTEX(&ha->mbx_cmd_sem);
1412         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1413
1414         INIT_LIST_HEAD(&ha->list);
1415         INIT_LIST_HEAD(&ha->fcports);
1416         INIT_LIST_HEAD(&ha->rscn_fcports);
1417
1418         /*
1419          * These locks are used to prevent more than one CPU
1420          * from modifying the queue at the same time. The
1421          * higher level "host_lock" will reduce most
1422          * contention for these locks.
1423          */
1424         spin_lock_init(&ha->mbx_reg_lock);
1425
1426         init_completion(&ha->dpc_inited);
1427         init_completion(&ha->dpc_exited);
1428
1429         qla2x00_config_dma_addressing(ha);
1430         if (qla2x00_mem_alloc(ha)) {
1431                 qla_printk(KERN_WARNING, ha,
1432                     "[ERROR] Failed to allocate memory for adapter\n");
1433
1434                 ret = -ENOMEM;
1435                 goto probe_failed;
1436         }
1437
1438         if (qla2x00_initialize_adapter(ha) &&
1439             !(ha->device_flags & DFLG_NO_CABLE)) {
1440
1441                 qla_printk(KERN_WARNING, ha,
1442                     "Failed to initialize adapter\n");
1443
1444                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1445                     "Adapter flags %x.\n",
1446                     ha->host_no, ha->device_flags));
1447
1448                 ret = -ENODEV;
1449                 goto probe_failed;
1450         }
1451
1452         /*
1453          * Startup the kernel thread for this host adapter
1454          */
1455         ha->dpc_should_die = 0;
1456         ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1457         if (ha->dpc_pid < 0) {
1458                 qla_printk(KERN_WARNING, ha,
1459                     "Unable to start DPC thread!\n");
1460
1461                 ret = -ENODEV;
1462                 goto probe_failed;
1463         }
1464         wait_for_completion(&ha->dpc_inited);
1465
1466         host->this_id = 255;
1467         host->cmd_per_lun = 3;
1468         host->unique_id = ha->instance;
1469         host->max_cmd_len = MAX_CMDSZ;
1470         host->max_channel = ha->ports - 1;
1471         host->max_lun = MAX_LUNS;
1472         host->transportt = qla2xxx_transport_template;
1473
1474         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1475             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1476         if (ret) {
1477                 qla_printk(KERN_WARNING, ha,
1478                     "Failed to reserve interrupt %d already in use.\n",
1479                     pdev->irq);
1480                 goto probe_failed;
1481         }
1482         host->irq = pdev->irq;
1483
1484         /* Initialized the timer */
1485         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1486
1487         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1488             ha->host_no, ha));
1489
1490         ha->isp_ops.disable_intrs(ha);
1491
1492         spin_lock_irqsave(&ha->hardware_lock, flags);
1493         reg = ha->iobase;
1494         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1495                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1496                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1497         } else {
1498                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1499                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1500                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1501
1502                 /* Enable proper parity */
1503                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1504                         if (IS_QLA2300(ha))
1505                                 /* SRAM parity */
1506                                 WRT_REG_WORD(&reg->isp.hccr,
1507                                     (HCCR_ENABLE_PARITY + 0x1));
1508                         else
1509                                 /* SRAM, Instruction RAM and GP RAM parity */
1510                                 WRT_REG_WORD(&reg->isp.hccr,
1511                                     (HCCR_ENABLE_PARITY + 0x7));
1512                 }
1513         }
1514         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1515
1516         ha->isp_ops.enable_intrs(ha);
1517
1518         /* v2.19.5b6 */
1519         /*
1520          * Wait around max loop_reset_delay secs for the devices to come
1521          * on-line. We don't want Linux scanning before we are ready.
1522          *
1523          */
1524         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1525             time_before(jiffies,wait_switch) &&
1526              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1527              && (ha->device_flags & SWITCH_FOUND) ;) {
1528
1529                 qla2x00_check_fabric_devices(ha);
1530
1531                 msleep(10);
1532         }
1533
1534         pci_set_drvdata(pdev, ha);
1535         ha->flags.init_done = 1;
1536         num_hosts++;
1537
1538         ret = scsi_add_host(host, &pdev->dev);
1539         if (ret)
1540                 goto probe_failed;
1541
1542         qla2x00_alloc_sysfs_attr(ha);
1543
1544         qla2x00_init_host_attr(ha);
1545
1546         qla_printk(KERN_INFO, ha, "\n"
1547             " QLogic Fibre Channel HBA Driver: %s\n"
1548             "  QLogic %s - %s\n"
1549             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1550             qla2x00_version_str, ha->model_number,
1551             ha->model_desc ? ha->model_desc: "", pdev->device,
1552             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1553             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1554             ha->isp_ops.fw_version_str(ha, fw_str));
1555
1556         /* Go with fc_rport registration. */
1557         list_for_each_entry(fcport, &ha->fcports, list)
1558                 qla2x00_reg_remote_port(ha, fcport);
1559
1560         return 0;
1561
1562 probe_failed:
1563         qla2x00_free_device(ha);
1564
1565         scsi_host_put(host);
1566
1567 probe_disable_device:
1568         pci_disable_device(pdev);
1569
1570 probe_out:
1571         return ret;
1572 }
1573 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1574
1575 void qla2x00_remove_one(struct pci_dev *pdev)
1576 {
1577         scsi_qla_host_t *ha;
1578
1579         ha = pci_get_drvdata(pdev);
1580
1581         qla2x00_free_sysfs_attr(ha);
1582
1583         fc_remove_host(ha->host);
1584
1585         scsi_remove_host(ha->host);
1586
1587         qla2x00_free_device(ha);
1588
1589         scsi_host_put(ha->host);
1590
1591         pci_set_drvdata(pdev, NULL);
1592 }
1593 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1594
1595 static void
1596 qla2x00_free_device(scsi_qla_host_t *ha)
1597 {
1598         int ret;
1599
1600         /* Abort any outstanding IO descriptors. */
1601         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1602                 qla2x00_cancel_io_descriptors(ha);
1603
1604         /* Disable timer */
1605         if (ha->timer_active)
1606                 qla2x00_stop_timer(ha);
1607
1608         /* Kill the kernel thread for this host */
1609         if (ha->dpc_pid >= 0) {
1610                 ha->dpc_should_die = 1;
1611                 wmb();
1612                 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1613                 if (ret) {
1614                         qla_printk(KERN_ERR, ha,
1615                             "Unable to signal DPC thread -- (%d)\n", ret);
1616
1617                         /* TODO: SOMETHING MORE??? */
1618                 } else {
1619                         wait_for_completion(&ha->dpc_exited);
1620                 }
1621         }
1622
1623         /* Stop currently executing firmware. */
1624         qla2x00_stop_firmware(ha);
1625
1626         /* turn-off interrupts on the card */
1627         if (ha->interrupts_on)
1628                 ha->isp_ops.disable_intrs(ha);
1629
1630         qla2x00_mem_free(ha);
1631
1632         ha->flags.online = 0;
1633
1634         /* Detach interrupts */
1635         if (ha->pdev->irq)
1636                 free_irq(ha->pdev->irq, ha);
1637
1638         /* release io space registers  */
1639         if (ha->iobase)
1640                 iounmap(ha->iobase);
1641         pci_release_regions(ha->pdev);
1642
1643         pci_disable_device(ha->pdev);
1644 }
1645
1646 static inline void
1647 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1648     int defer)
1649 {
1650         unsigned long flags;
1651         struct fc_rport *rport;
1652
1653         if (!fcport->rport)
1654                 return;
1655
1656         rport = fcport->rport;
1657         if (defer) {
1658                 spin_lock_irqsave(&fcport->rport_lock, flags);
1659                 fcport->drport = rport;
1660                 fcport->rport = NULL;
1661                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1662                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1663         } else {
1664                 spin_lock_irqsave(&fcport->rport_lock, flags);
1665                 fcport->rport = NULL;
1666                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1667                 fc_remote_port_delete(rport);
1668         }
1669 }
1670
1671 /*
1672  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1673  *
1674  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1675  *
1676  * Return: None.
1677  *
1678  * Context:
1679  */
1680 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1681     int do_login, int defer)
1682 {
1683         if (atomic_read(&fcport->state) == FCS_ONLINE)
1684                 qla2x00_schedule_rport_del(ha, fcport, defer);
1685
1686         /*
1687          * We may need to retry the login, so don't change the state of the
1688          * port but do the retries.
1689          */
1690         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1691                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1692
1693         if (!do_login)
1694                 return;
1695
1696         if (fcport->login_retry == 0) {
1697                 fcport->login_retry = ha->login_retry_count;
1698                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1699
1700                 DEBUG(printk("scsi(%ld): Port login retry: "
1701                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1702                     "id = 0x%04x retry cnt=%d\n",
1703                     ha->host_no,
1704                     fcport->port_name[0],
1705                     fcport->port_name[1],
1706                     fcport->port_name[2],
1707                     fcport->port_name[3],
1708                     fcport->port_name[4],
1709                     fcport->port_name[5],
1710                     fcport->port_name[6],
1711                     fcport->port_name[7],
1712                     fcport->loop_id,
1713                     fcport->login_retry));
1714         }
1715 }
1716
1717 /*
1718  * qla2x00_mark_all_devices_lost
1719  *      Updates fcport state when device goes offline.
1720  *
1721  * Input:
1722  *      ha = adapter block pointer.
1723  *      fcport = port structure pointer.
1724  *
1725  * Return:
1726  *      None.
1727  *
1728  * Context:
1729  */
1730 void
1731 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1732 {
1733         fc_port_t *fcport;
1734
1735         list_for_each_entry(fcport, &ha->fcports, list) {
1736                 if (fcport->port_type != FCT_TARGET)
1737                         continue;
1738
1739                 /*
1740                  * No point in marking the device as lost, if the device is
1741                  * already DEAD.
1742                  */
1743                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1744                         continue;
1745                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1746                         qla2x00_schedule_rport_del(ha, fcport, defer);
1747                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1748         }
1749
1750         if (defer && ha->dpc_wait && !ha->dpc_active)
1751                 up(ha->dpc_wait);
1752 }
1753
1754 /*
1755 * qla2x00_mem_alloc
1756 *      Allocates adapter memory.
1757 *
1758 * Returns:
1759 *      0  = success.
1760 *      1  = failure.
1761 */
1762 static uint8_t
1763 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1764 {
1765         char    name[16];
1766         uint8_t   status = 1;
1767         int     retry= 10;
1768
1769         do {
1770                 /*
1771                  * This will loop only once if everything goes well, else some
1772                  * number of retries will be performed to get around a kernel
1773                  * bug where available mem is not allocated until after a
1774                  * little delay and a retry.
1775                  */
1776                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1777                     (ha->request_q_length + 1) * sizeof(request_t),
1778                     &ha->request_dma, GFP_KERNEL);
1779                 if (ha->request_ring == NULL) {
1780                         qla_printk(KERN_WARNING, ha,
1781                             "Memory Allocation failed - request_ring\n");
1782
1783                         qla2x00_mem_free(ha);
1784                         msleep(100);
1785
1786                         continue;
1787                 }
1788
1789                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1790                     (ha->response_q_length + 1) * sizeof(response_t),
1791                     &ha->response_dma, GFP_KERNEL);
1792                 if (ha->response_ring == NULL) {
1793                         qla_printk(KERN_WARNING, ha,
1794                             "Memory Allocation failed - response_ring\n");
1795
1796                         qla2x00_mem_free(ha);
1797                         msleep(100);
1798
1799                         continue;
1800                 }
1801
1802                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1803                     &ha->gid_list_dma, GFP_KERNEL);
1804                 if (ha->gid_list == NULL) {
1805                         qla_printk(KERN_WARNING, ha,
1806                             "Memory Allocation failed - gid_list\n");
1807
1808                         qla2x00_mem_free(ha);
1809                         msleep(100);
1810
1811                         continue;
1812                 }
1813
1814                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1815                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1816                 if (ha->rlc_rsp == NULL) {
1817                         qla_printk(KERN_WARNING, ha,
1818                                 "Memory Allocation failed - rlc");
1819
1820                         qla2x00_mem_free(ha);
1821                         msleep(100);
1822
1823                         continue;
1824                 }
1825
1826                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1827                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1828                     DMA_POOL_SIZE, 8, 0);
1829                 if (ha->s_dma_pool == NULL) {
1830                         qla_printk(KERN_WARNING, ha,
1831                             "Memory Allocation failed - s_dma_pool\n");
1832
1833                         qla2x00_mem_free(ha);
1834                         msleep(100);
1835
1836                         continue;
1837                 }
1838
1839                 /* get consistent memory allocated for init control block */
1840                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1841                     &ha->init_cb_dma);
1842                 if (ha->init_cb == NULL) {
1843                         qla_printk(KERN_WARNING, ha,
1844                             "Memory Allocation failed - init_cb\n");
1845
1846                         qla2x00_mem_free(ha);
1847                         msleep(100);
1848
1849                         continue;
1850                 }
1851                 memset(ha->init_cb, 0, ha->init_cb_size);
1852
1853                 /* Get consistent memory allocated for Get Port Database cmd */
1854                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1855                     &ha->iodesc_pd_dma);
1856                 if (ha->iodesc_pd == NULL) {
1857                         /* error */
1858                         qla_printk(KERN_WARNING, ha,
1859                             "Memory Allocation failed - iodesc_pd\n");
1860
1861                         qla2x00_mem_free(ha);
1862                         msleep(100);
1863
1864                         continue;
1865                 }
1866                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1867
1868                 /* Allocate ioctl related memory. */
1869                 if (qla2x00_alloc_ioctl_mem(ha)) {
1870                         qla_printk(KERN_WARNING, ha,
1871                             "Memory Allocation failed - ioctl_mem\n");
1872
1873                         qla2x00_mem_free(ha);
1874                         msleep(100);
1875
1876                         continue;
1877                 }
1878
1879                 if (qla2x00_allocate_sp_pool(ha)) {
1880                         qla_printk(KERN_WARNING, ha,
1881                             "Memory Allocation failed - "
1882                             "qla2x00_allocate_sp_pool()\n");
1883
1884                         qla2x00_mem_free(ha);
1885                         msleep(100);
1886
1887                         continue;
1888                 }
1889
1890                 /* Allocate memory for SNS commands */
1891                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1892                         /* Get consistent memory allocated for SNS commands */
1893                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1894                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1895                             GFP_KERNEL);
1896                         if (ha->sns_cmd == NULL) {
1897                                 /* error */
1898                                 qla_printk(KERN_WARNING, ha,
1899                                     "Memory Allocation failed - sns_cmd\n");
1900
1901                                 qla2x00_mem_free(ha);
1902                                 msleep(100);
1903
1904                                 continue;
1905                         }
1906                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1907                 } else {
1908                         /* Get consistent memory allocated for MS IOCB */
1909                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1910                             &ha->ms_iocb_dma);
1911                         if (ha->ms_iocb == NULL) {
1912                                 /* error */
1913                                 qla_printk(KERN_WARNING, ha,
1914                                     "Memory Allocation failed - ms_iocb\n");
1915
1916                                 qla2x00_mem_free(ha);
1917                                 msleep(100);
1918
1919                                 continue;
1920                         }
1921                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1922
1923                         /*
1924                          * Get consistent memory allocated for CT SNS
1925                          * commands
1926                          */
1927                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1928                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1929                             GFP_KERNEL);
1930                         if (ha->ct_sns == NULL) {
1931                                 /* error */
1932                                 qla_printk(KERN_WARNING, ha,
1933                                     "Memory Allocation failed - ct_sns\n");
1934
1935                                 qla2x00_mem_free(ha);
1936                                 msleep(100);
1937
1938                                 continue;
1939                         }
1940                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1941                 }
1942
1943                 /* Done all allocations without any error. */
1944                 status = 0;
1945
1946         } while (retry-- && status != 0);
1947
1948         if (status) {
1949                 printk(KERN_WARNING
1950                         "%s(): **** FAILED ****\n", __func__);
1951         }
1952
1953         return(status);
1954 }
1955
1956 /*
1957 * qla2x00_mem_free
1958 *      Frees all adapter allocated memory.
1959 *
1960 * Input:
1961 *      ha = adapter block pointer.
1962 */
1963 static void
1964 qla2x00_mem_free(scsi_qla_host_t *ha)
1965 {
1966         struct list_head        *fcpl, *fcptemp;
1967         fc_port_t       *fcport;
1968         unsigned int    wtime;/* max wait time if mbx cmd is busy. */
1969
1970         if (ha == NULL) {
1971                 /* error */
1972                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1973                 return;
1974         }
1975
1976         /* Make sure all other threads are stopped. */
1977         wtime = 60 * 1000;
1978         while (ha->dpc_wait && wtime)
1979                 wtime = msleep_interruptible(wtime);
1980
1981         /* free ioctl memory */
1982         qla2x00_free_ioctl_mem(ha);
1983
1984         /* free sp pool */
1985         qla2x00_free_sp_pool(ha);
1986
1987         if (ha->sns_cmd)
1988                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1989                     ha->sns_cmd, ha->sns_cmd_dma);
1990
1991         if (ha->ct_sns)
1992                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1993                     ha->ct_sns, ha->ct_sns_dma);
1994
1995         if (ha->ms_iocb)
1996                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1997
1998         if (ha->iodesc_pd)
1999                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2000
2001         if (ha->init_cb)
2002                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2003
2004         if (ha->s_dma_pool)
2005                 dma_pool_destroy(ha->s_dma_pool);
2006
2007         if (ha->rlc_rsp)
2008                 dma_free_coherent(&ha->pdev->dev,
2009                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2010                     ha->rlc_rsp_dma);
2011
2012         if (ha->gid_list)
2013                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2014                     ha->gid_list_dma);
2015
2016         if (ha->response_ring)
2017                 dma_free_coherent(&ha->pdev->dev,
2018                     (ha->response_q_length + 1) * sizeof(response_t),
2019                     ha->response_ring, ha->response_dma);
2020
2021         if (ha->request_ring)
2022                 dma_free_coherent(&ha->pdev->dev,
2023                     (ha->request_q_length + 1) * sizeof(request_t),
2024                     ha->request_ring, ha->request_dma);
2025
2026         ha->sns_cmd = NULL;
2027         ha->sns_cmd_dma = 0;
2028         ha->ct_sns = NULL;
2029         ha->ct_sns_dma = 0;
2030         ha->ms_iocb = NULL;
2031         ha->ms_iocb_dma = 0;
2032         ha->iodesc_pd = NULL;
2033         ha->iodesc_pd_dma = 0;
2034         ha->init_cb = NULL;
2035         ha->init_cb_dma = 0;
2036
2037         ha->s_dma_pool = NULL;
2038
2039         ha->rlc_rsp = NULL;
2040         ha->rlc_rsp_dma = 0;
2041         ha->gid_list = NULL;
2042         ha->gid_list_dma = 0;
2043
2044         ha->response_ring = NULL;
2045         ha->response_dma = 0;
2046         ha->request_ring = NULL;
2047         ha->request_dma = 0;
2048
2049         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2050                 fcport = list_entry(fcpl, fc_port_t, list);
2051
2052                 /* fc ports */
2053                 list_del_init(&fcport->list);
2054                 kfree(fcport);
2055         }
2056         INIT_LIST_HEAD(&ha->fcports);
2057
2058         if (ha->fw_dump)
2059                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2060
2061         vfree(ha->fw_dump24);
2062
2063         vfree(ha->fw_dump_buffer);
2064
2065         ha->fw_dump = NULL;
2066         ha->fw_dump24 = NULL;
2067         ha->fw_dumped = 0;
2068         ha->fw_dump_reading = 0;
2069         ha->fw_dump_buffer = NULL;
2070 }
2071
2072 /*
2073  * qla2x00_allocate_sp_pool
2074  *       This routine is called during initialization to allocate
2075  *       memory for local srb_t.
2076  *
2077  * Input:
2078  *       ha   = adapter block pointer.
2079  *
2080  * Context:
2081  *      Kernel context.
2082  *
2083  * Note: Sets the ref_count for non Null sp to one.
2084  */
2085 static int
2086 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2087 {
2088         int      rval;
2089
2090         rval = QLA_SUCCESS;
2091         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2092             mempool_free_slab, srb_cachep);
2093         if (ha->srb_mempool == NULL) {
2094                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2095                 rval = QLA_FUNCTION_FAILED;
2096         }
2097         return (rval);
2098 }
2099
2100 /*
2101  *  This routine frees all adapter allocated memory.
2102  *
2103  */
2104 static void
2105 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2106 {
2107         if (ha->srb_mempool) {
2108                 mempool_destroy(ha->srb_mempool);
2109                 ha->srb_mempool = NULL;
2110         }
2111 }
2112
2113 /**************************************************************************
2114 * qla2x00_do_dpc
2115 *   This kernel thread is a task that is schedule by the interrupt handler
2116 *   to perform the background processing for interrupts.
2117 *
2118 * Notes:
2119 * This task always run in the context of a kernel thread.  It
2120 * is kick-off by the driver's detect code and starts up
2121 * up one per adapter. It immediately goes to sleep and waits for
2122 * some fibre event.  When either the interrupt handler or
2123 * the timer routine detects a event it will one of the task
2124 * bits then wake us up.
2125 **************************************************************************/
2126 static int
2127 qla2x00_do_dpc(void *data)
2128 {
2129         DECLARE_MUTEX_LOCKED(sem);
2130         scsi_qla_host_t *ha;
2131         fc_port_t       *fcport;
2132         uint8_t         status;
2133         uint16_t        next_loopid;
2134
2135         ha = (scsi_qla_host_t *)data;
2136
2137         lock_kernel();
2138
2139         daemonize("%s_dpc", ha->host_str);
2140         allow_signal(SIGHUP);
2141
2142         ha->dpc_wait = &sem;
2143
2144         set_user_nice(current, -20);
2145
2146         unlock_kernel();
2147
2148         complete(&ha->dpc_inited);
2149
2150         while (1) {
2151                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2152
2153                 if (down_interruptible(&sem))
2154                         break;
2155
2156                 if (ha->dpc_should_die)
2157                         break;
2158
2159                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2160
2161                 /* Initialization not yet finished. Don't do anything yet. */
2162                 if (!ha->flags.init_done || ha->dpc_active)
2163                         continue;
2164
2165                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2166
2167                 ha->dpc_active = 1;
2168
2169                 if (ha->flags.mbox_busy) {
2170                         ha->dpc_active = 0;
2171                         continue;
2172                 }
2173
2174                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2175
2176                         DEBUG(printk("scsi(%ld): dpc: sched "
2177                             "qla2x00_abort_isp ha = %p\n",
2178                             ha->host_no, ha));
2179                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2180                             &ha->dpc_flags))) {
2181
2182                                 if (qla2x00_abort_isp(ha)) {
2183                                         /* failed. retry later */
2184                                         set_bit(ISP_ABORT_NEEDED,
2185                                             &ha->dpc_flags);
2186                                 }
2187                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2188                         }
2189                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2190                             ha->host_no));
2191                 }
2192
2193                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2194                         qla2x00_update_fcports(ha);
2195
2196                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2197                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2198                             ha->host_no));
2199                         qla2x00_loop_reset(ha);
2200                 }
2201
2202                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2203                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2204
2205                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2206                             ha->host_no));
2207
2208                         qla2x00_rst_aen(ha);
2209                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2210                 }
2211
2212                 /* Retry each device up to login retry count */
2213                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2214                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2215                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2216
2217                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2218                             ha->host_no));
2219
2220                         next_loopid = 0;
2221                         list_for_each_entry(fcport, &ha->fcports, list) {
2222                                 if (fcport->port_type != FCT_TARGET)
2223                                         continue;
2224
2225                                 /*
2226                                  * If the port is not ONLINE then try to login
2227                                  * to it if we haven't run out of retries.
2228                                  */
2229                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2230                                     fcport->login_retry) {
2231
2232                                         fcport->login_retry--;
2233                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2234                                                 if (fcport->flags &
2235                                                     FCF_TAPE_PRESENT)
2236                                                         ha->isp_ops.fabric_logout(
2237                                                             ha, fcport->loop_id,
2238                                                             fcport->d_id.b.domain,
2239                                                             fcport->d_id.b.area,
2240                                                             fcport->d_id.b.al_pa);
2241                                                 status = qla2x00_fabric_login(
2242                                                     ha, fcport, &next_loopid);
2243                                         } else
2244                                                 status =
2245                                                     qla2x00_local_device_login(
2246                                                         ha, fcport->loop_id);
2247
2248                                         if (status == QLA_SUCCESS) {
2249                                                 fcport->old_loop_id = fcport->loop_id;
2250
2251                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2252                                                     ha->host_no, fcport->loop_id));
2253
2254                                                 qla2x00_update_fcport(ha,
2255                                                     fcport);
2256                                         } else if (status == 1) {
2257                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2258                                                 /* retry the login again */
2259                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2260                                                     ha->host_no,
2261                                                     fcport->login_retry, fcport->loop_id));
2262                                         } else {
2263                                                 fcport->login_retry = 0;
2264                                         }
2265                                 }
2266                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2267                                         break;
2268                         }
2269                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2270                             ha->host_no));
2271                 }
2272
2273                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2274                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2275
2276                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2277                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2278                             ha->host_no));
2279
2280                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2281
2282                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2283                             ha->host_no));
2284                 }
2285
2286                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2287
2288                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2289                             ha->host_no));
2290
2291                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2292                             &ha->dpc_flags))) {
2293
2294                                 qla2x00_loop_resync(ha);
2295
2296                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2297                         }
2298
2299                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2300                             ha->host_no));
2301                 }
2302
2303                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2304
2305                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2306                             ha->host_no));
2307
2308                         qla2x00_rescan_fcports(ha);
2309
2310                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2311                             "end.\n",
2312                             ha->host_no));
2313                 }
2314
2315                 if (!ha->interrupts_on)
2316                         ha->isp_ops.enable_intrs(ha);
2317
2318                 ha->dpc_active = 0;
2319         } /* End of while(1) */
2320
2321         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2322
2323         /*
2324          * Make sure that nobody tries to wake us up again.
2325          */
2326         ha->dpc_wait = NULL;
2327         ha->dpc_active = 0;
2328
2329         complete_and_exit(&ha->dpc_exited, 0);
2330 }
2331
2332 /*
2333 *  qla2x00_rst_aen
2334 *      Processes asynchronous reset.
2335 *
2336 * Input:
2337 *      ha  = adapter block pointer.
2338 */
2339 static void
2340 qla2x00_rst_aen(scsi_qla_host_t *ha)
2341 {
2342         if (ha->flags.online && !ha->flags.reset_active &&
2343             !atomic_read(&ha->loop_down_timer) &&
2344             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2345                 do {
2346                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2347
2348                         /*
2349                          * Issue marker command only when we are going to start
2350                          * the I/O.
2351                          */
2352                         ha->marker_needed = 1;
2353                 } while (!atomic_read(&ha->loop_down_timer) &&
2354                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2355         }
2356 }
2357
2358 static void
2359 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2360 {
2361         struct scsi_cmnd *cmd = sp->cmd;
2362
2363         if (sp->flags & SRB_DMA_VALID) {
2364                 if (cmd->use_sg) {
2365                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2366                             cmd->use_sg, cmd->sc_data_direction);
2367                 } else if (cmd->request_bufflen) {
2368                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2369                             cmd->request_bufflen, cmd->sc_data_direction);
2370                 }
2371                 sp->flags &= ~SRB_DMA_VALID;
2372         }
2373         CMD_SP(cmd) = NULL;
2374 }
2375
2376 void
2377 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2378 {
2379         struct scsi_cmnd *cmd = sp->cmd;
2380
2381         qla2x00_sp_free_dma(ha, sp);
2382
2383         mempool_free(sp, ha->srb_mempool);
2384
2385         cmd->scsi_done(cmd);
2386 }
2387
2388 /**************************************************************************
2389 *   qla2x00_timer
2390 *
2391 * Description:
2392 *   One second timer
2393 *
2394 * Context: Interrupt
2395 ***************************************************************************/
2396 static void
2397 qla2x00_timer(scsi_qla_host_t *ha)
2398 {
2399         unsigned long   cpu_flags = 0;
2400         fc_port_t       *fcport;
2401         int             start_dpc = 0;
2402         int             index;
2403         srb_t           *sp;
2404         int             t;
2405
2406         /*
2407          * Ports - Port down timer.
2408          *
2409          * Whenever, a port is in the LOST state we start decrementing its port
2410          * down timer every second until it reaches zero. Once  it reaches zero
2411          * the port it marked DEAD.
2412          */
2413         t = 0;
2414         list_for_each_entry(fcport, &ha->fcports, list) {
2415                 if (fcport->port_type != FCT_TARGET)
2416                         continue;
2417
2418                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2419
2420                         if (atomic_read(&fcport->port_down_timer) == 0)
2421                                 continue;
2422
2423                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2424                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2425
2426                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2427                             "%d remaining\n",
2428                             ha->host_no,
2429                             t, atomic_read(&fcport->port_down_timer)));
2430                 }
2431                 t++;
2432         } /* End of for fcport  */
2433
2434
2435         /* Loop down handler. */
2436         if (atomic_read(&ha->loop_down_timer) > 0 &&
2437             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2438
2439                 if (atomic_read(&ha->loop_down_timer) ==
2440                     ha->loop_down_abort_time) {
2441
2442                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2443                             "queues before time expire\n",
2444                             ha->host_no));
2445
2446                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2447                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2448
2449                         /* Schedule an ISP abort to return any tape commands. */
2450                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2451                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2452                             index++) {
2453                                 fc_port_t *sfcp;
2454
2455                                 sp = ha->outstanding_cmds[index];
2456                                 if (!sp)
2457                                         continue;
2458                                 sfcp = sp->fcport;
2459                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2460                                         continue;
2461
2462                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2463                                 break;
2464                         }
2465                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2466
2467                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2468                         start_dpc++;
2469                 }
2470
2471                 /* if the loop has been down for 4 minutes, reinit adapter */
2472                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2473                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2474                             "restarting queues.\n",
2475                             ha->host_no));
2476
2477                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2478                         start_dpc++;
2479
2480                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2481                                 DEBUG(printk("scsi(%ld): Loop down - "
2482                                     "aborting ISP.\n",
2483                                     ha->host_no));
2484                                 qla_printk(KERN_WARNING, ha,
2485                                     "Loop down - aborting ISP.\n");
2486
2487                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2488                         }
2489                 }
2490                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2491                     ha->host_no,
2492                     atomic_read(&ha->loop_down_timer)));
2493         }
2494
2495         /* Schedule the DPC routine if needed */
2496         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2497             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2498             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2499             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2500             start_dpc ||
2501             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2502             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2503             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2504             ha->dpc_wait && !ha->dpc_active) {
2505
2506                 up(ha->dpc_wait);
2507         }
2508
2509         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2510 }
2511
2512 /* XXX(hch): crude hack to emulate a down_timeout() */
2513 int
2514 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2515 {
2516         const unsigned int step = 100; /* msecs */
2517         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2518
2519         do {
2520                 if (!down_trylock(sema))
2521                         return 0;
2522                 if (msleep_interruptible(step))
2523                         break;
2524         } while (--iterations >= 0);
2525
2526         return -ETIMEDOUT;
2527 }
2528
2529 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2530
2531 #define qla2x00_release_firmware()      do { } while (0)
2532 #define qla2x00_pci_module_init()       (0)
2533 #define qla2x00_pci_module_exit()       do { } while (0)
2534
2535 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2536
2537 /* Firmware interface routines. */
2538
2539 #define FW_BLOBS        6
2540 #define FW_ISP21XX      0
2541 #define FW_ISP22XX      1
2542 #define FW_ISP2300      2
2543 #define FW_ISP2322      3
2544 #define FW_ISP63XX      4
2545 #define FW_ISP24XX      5
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 = "ql6312_fw.bin", .segs = { 0x800, 0 }, },
2555         { .name = "ql2400_fw.bin", },
2556 };
2557
2558 struct fw_blob *
2559 qla2x00_request_firmware(scsi_qla_host_t *ha)
2560 {
2561         struct fw_blob *blob;
2562
2563         blob = NULL;
2564         if (IS_QLA2100(ha)) {
2565                 blob = &qla_fw_blobs[FW_ISP21XX];
2566         } else if (IS_QLA2200(ha)) {
2567                 blob = &qla_fw_blobs[FW_ISP22XX];
2568         } else if (IS_QLA2300(ha) || IS_QLA2312(ha)) {
2569                 blob = &qla_fw_blobs[FW_ISP2300];
2570         } else if (IS_QLA2322(ha)) {
2571                 blob = &qla_fw_blobs[FW_ISP2322];
2572         } else if (IS_QLA6312(ha) || IS_QLA6322(ha)) {
2573                 blob = &qla_fw_blobs[FW_ISP63XX];
2574         } else if (IS_QLA24XX(ha)) {
2575                 blob = &qla_fw_blobs[FW_ISP24XX];
2576         }
2577
2578         down(&qla_fw_lock);
2579         if (blob->fw)
2580                 goto out;
2581
2582         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2583                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2584                     "(%s).\n", ha->host_no, blob->name));
2585                 blob->fw = NULL;
2586                 blob = NULL;
2587                 goto out;
2588         }
2589
2590 out:
2591         up(&qla_fw_lock);
2592         return blob;
2593 }
2594
2595 static void
2596 qla2x00_release_firmware(void)
2597 {
2598         int idx;
2599
2600         down(&qla_fw_lock);
2601         for (idx = 0; idx < FW_BLOBS; idx++)
2602                 if (qla_fw_blobs[idx].fw)
2603                         release_firmware(qla_fw_blobs[idx].fw);
2604         up(&qla_fw_lock);
2605 }
2606
2607 static struct qla_board_info qla_board_tbl = {
2608         .drv_name       = "qla2xxx",
2609 };
2610
2611 static struct pci_device_id qla2xxx_pci_tbl[] = {
2612         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2613                 PCI_ANY_ID, PCI_ANY_ID, },
2614         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2615                 PCI_ANY_ID, PCI_ANY_ID, },
2616         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2617                 PCI_ANY_ID, PCI_ANY_ID, },
2618         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2619                 PCI_ANY_ID, PCI_ANY_ID, },
2620         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2621                 PCI_ANY_ID, PCI_ANY_ID, },
2622         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2623                 PCI_ANY_ID, PCI_ANY_ID, },
2624         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2625                 PCI_ANY_ID, PCI_ANY_ID, },
2626         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2627                 PCI_ANY_ID, PCI_ANY_ID, },
2628         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2629                 PCI_ANY_ID, PCI_ANY_ID, },
2630         { 0 },
2631 };
2632 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2633
2634 static int __devinit
2635 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2636 {
2637         return qla2x00_probe_one(pdev, &qla_board_tbl);
2638 }
2639
2640 static void __devexit
2641 qla2xxx_remove_one(struct pci_dev *pdev)
2642 {
2643         qla2x00_remove_one(pdev);
2644 }
2645
2646 static struct pci_driver qla2xxx_pci_driver = {
2647         .name           = "qla2xxx",
2648         .driver         = {
2649                 .owner          = THIS_MODULE,
2650         },
2651         .id_table       = qla2xxx_pci_tbl,
2652         .probe          = qla2xxx_probe_one,
2653         .remove         = __devexit_p(qla2xxx_remove_one),
2654 };
2655
2656 static inline int
2657 qla2x00_pci_module_init(void)
2658 {
2659         return pci_module_init(&qla2xxx_pci_driver);
2660 }
2661
2662 static inline void
2663 qla2x00_pci_module_exit(void)
2664 {
2665         pci_unregister_driver(&qla2xxx_pci_driver);
2666 }
2667
2668 #endif
2669
2670 /**
2671  * qla2x00_module_init - Module initialization.
2672  **/
2673 static int __init
2674 qla2x00_module_init(void)
2675 {
2676         int ret = 0;
2677
2678         /* Allocate cache for SRBs. */
2679         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2680             SLAB_HWCACHE_ALIGN, NULL, NULL);
2681         if (srb_cachep == NULL) {
2682                 printk(KERN_ERR
2683                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2684                 return -ENOMEM;
2685         }
2686
2687         /* Derive version string. */
2688         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2689 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2690         strcat(qla2x00_version_str, "-fw");
2691 #endif
2692 #if DEBUG_QLA2100
2693         strcat(qla2x00_version_str, "-debug");
2694 #endif
2695         qla2xxx_transport_template =
2696             fc_attach_transport(&qla2xxx_transport_functions);
2697         if (!qla2xxx_transport_template)
2698                 return -ENODEV;
2699
2700         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2701         ret = qla2x00_pci_module_init();
2702         if (ret) {
2703                 kmem_cache_destroy(srb_cachep);
2704                 fc_release_transport(qla2xxx_transport_template);
2705         }
2706         return ret;
2707 }
2708
2709 /**
2710  * qla2x00_module_exit - Module cleanup.
2711  **/
2712 static void __exit
2713 qla2x00_module_exit(void)
2714 {
2715         qla2x00_pci_module_exit();
2716         qla2x00_release_firmware();
2717         kmem_cache_destroy(srb_cachep);
2718         fc_release_transport(qla2xxx_transport_template);
2719 }
2720
2721 module_init(qla2x00_module_init);
2722 module_exit(qla2x00_module_exit);
2723
2724 MODULE_AUTHOR("QLogic Corporation");
2725 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2726 MODULE_LICENSE("GPL");
2727 MODULE_VERSION(QLA2XXX_VERSION);