git.oblomov.eu Git - linux-2.6/blob - 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 /*
  75  * SCSI host template entry points
  76  */
  77 static int qla2xxx_slave_configure(struct scsi_device * device);
  78 static int qla2xxx_slave_alloc(struct scsi_device *);
  79 static void qla2xxx_slave_destroy(struct scsi_device *);
  80 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  81                 void (*fn)(struct scsi_cmnd *));
  82 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  83                 void (*fn)(struct scsi_cmnd *));
  84 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  85 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  86 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  87 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  88 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  89 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  90
  91 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  92 static int qla2x00_change_queue_type(struct scsi_device *, int);
  93
  94 static struct scsi_host_template qla2x00_driver_template = {
  95         .module                 = THIS_MODULE,
  96         .name                   = "qla2xxx",
  97         .queuecommand           = qla2x00_queuecommand,
  98
  99         .eh_abort_handler       = qla2xxx_eh_abort,
 100         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 101         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 102         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 103
 104         .slave_configure        = qla2xxx_slave_configure,
 105
 106         .slave_alloc            = qla2xxx_slave_alloc,
 107         .slave_destroy          = qla2xxx_slave_destroy,
 108         .change_queue_depth     = qla2x00_change_queue_depth,
 109         .change_queue_type      = qla2x00_change_queue_type,
 110         .this_id                = -1,
 111         .cmd_per_lun            = 3,
 112         .use_clustering         = ENABLE_CLUSTERING,
 113         .sg_tablesize           = SG_ALL,
 114
 115         /*
 116          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 117          * which equates to 0x800000 sectors.
 118          */
 119         .max_sectors            = 0xFFFF,
 120         .shost_attrs            = qla2x00_host_attrs,
 121 };
 122
 123 static struct scsi_host_template qla24xx_driver_template = {
 124         .module                 = THIS_MODULE,
 125         .name                   = "qla2xxx",
 126         .queuecommand           = qla24xx_queuecommand,
 127
 128         .eh_abort_handler       = qla2xxx_eh_abort,
 129         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 130         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 131         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 132
 133         .slave_configure        = qla2xxx_slave_configure,
 134
 135         .slave_alloc            = qla2xxx_slave_alloc,
 136         .slave_destroy          = qla2xxx_slave_destroy,
 137         .change_queue_depth     = qla2x00_change_queue_depth,
 138         .change_queue_type      = qla2x00_change_queue_type,
 139         .this_id                = -1,
 140         .cmd_per_lun            = 3,
 141         .use_clustering         = ENABLE_CLUSTERING,
 142         .sg_tablesize           = SG_ALL,
 143
 144         .max_sectors            = 0xFFFF,
 145         .shost_attrs            = qla2x00_host_attrs,
 146 };
 147
 148 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 149
 150 /* TODO Convert to inlines
 151  *
 152  * Timer routines
 153  */
 154 #define WATCH_INTERVAL          1       /* number of seconds */
 155
 156 static void qla2x00_timer(scsi_qla_host_t *);
 157
 158 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 159     void *, unsigned long);
 160 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 161 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 162
 163 static inline void
 164 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 165 {
 166         init_timer(&ha->timer);
 167         ha->timer.expires = jiffies + interval * HZ;
 168         ha->timer.data = (unsigned long)ha;
 169         ha->timer.function = (void (*)(unsigned long))func;
 170         add_timer(&ha->timer);
 171         ha->timer_active = 1;
 172 }
 173
 174 static inline void
 175 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 176 {
 177         mod_timer(&ha->timer, jiffies + interval * HZ);
 178 }
 179
 180 static __inline__ void
 181 qla2x00_stop_timer(scsi_qla_host_t *ha)
 182 {
 183         del_timer_sync(&ha->timer);
 184         ha->timer_active = 0;
 185 }
 186
 187 static int qla2x00_do_dpc(void *data);
 188
 189 static void qla2x00_rst_aen(scsi_qla_host_t *);
 190
 191 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 192 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 193 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 194 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 195 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 196 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 197
 198 /* -------------------------------------------------------------------------- */
 199
 200 static char *
 201 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 202 {
 203         static char *pci_bus_modes[] = {
 204                 "33", "66", "100", "133",
 205         };
 206         uint16_t pci_bus;
 207
 208         strcpy(str, "PCI");
 209         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 210         if (pci_bus) {
 211                 strcat(str, "-X (");
 212                 strcat(str, pci_bus_modes[pci_bus]);
 213         } else {
 214                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 215                 strcat(str, " (");
 216                 strcat(str, pci_bus_modes[pci_bus]);
 217         }
 218         strcat(str, " MHz)");
 219
 220         return (str);
 221 }
 222
 223 static char *
 224 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 225 {
 226         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 227         uint32_t pci_bus;
 228         int pcie_reg;
 229
 230         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 231         if (pcie_reg) {
 232                 char lwstr[6];
 233                 uint16_t pcie_lstat, lspeed, lwidth;
 234
 235                 pcie_reg += 0x12;
 236                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 237                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 238                 lwidth = (pcie_lstat &
 239                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 240
 241                 strcpy(str, "PCIe (");
 242                 if (lspeed == 1)
 243                         strcat(str, "2.5Gb/s ");
 244                 else
 245                         strcat(str, "<unknown> ");
 246                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 247                 strcat(str, lwstr);
 248
 249                 return str;
 250         }
 251
 252         strcpy(str, "PCI");
 253         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 254         if (pci_bus == 0 || pci_bus == 8) {
 255                 strcat(str, " (");
 256                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 257         } else {
 258                 strcat(str, "-X ");
 259                 if (pci_bus & BIT_2)
 260                         strcat(str, "Mode 2");
 261                 else
 262                         strcat(str, "Mode 1");
 263                 strcat(str, " (");
 264                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 265         }
 266         strcat(str, " MHz)");
 267
 268         return str;
 269 }
 270
 271 char *
 272 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 273 {
 274         char un_str[10];
 275
 276         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 277             ha->fw_minor_version,
 278             ha->fw_subminor_version);
 279
 280         if (ha->fw_attributes & BIT_9) {
 281                 strcat(str, "FLX");
 282                 return (str);
 283         }
 284
 285         switch (ha->fw_attributes & 0xFF) {
 286         case 0x7:
 287                 strcat(str, "EF");
 288                 break;
 289         case 0x17:
 290                 strcat(str, "TP");
 291                 break;
 292         case 0x37:
 293                 strcat(str, "IP");
 294                 break;
 295         case 0x77:
 296                 strcat(str, "VI");
 297                 break;
 298         default:
 299                 sprintf(un_str, "(%x)", ha->fw_attributes);
 300                 strcat(str, un_str);
 301                 break;
 302         }
 303         if (ha->fw_attributes & 0x100)
 304                 strcat(str, "X");
 305
 306         return (str);
 307 }
 308
 309 char *
 310 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 311 {
 312         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 313             ha->fw_minor_version,
 314             ha->fw_subminor_version);
 315
 316         if (ha->fw_attributes & BIT_0)
 317                 strcat(str, "[Class 2] ");
 318         if (ha->fw_attributes & BIT_1)
 319                 strcat(str, "[IP] ");
 320         if (ha->fw_attributes & BIT_2)
 321                 strcat(str, "[Multi-ID] ");
 322         if (ha->fw_attributes & BIT_13)
 323                 strcat(str, "[Experimental]");
 324         return str;
 325 }
 326
 327 static inline srb_t *
 328 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 329     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 330 {
 331         srb_t *sp;
 332
 333         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 334         if (!sp)
 335                 return sp;
 336
 337         atomic_set(&sp->ref_count, 1);
 338         sp->ha = ha;
 339         sp->fcport = fcport;
 340         sp->cmd = cmd;
 341         sp->flags = 0;
 342         CMD_SP(cmd) = (void *)sp;
 343         cmd->scsi_done = done;
 344
 345         return sp;
 346 }
 347
 348 static int
 349 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 350 {
 351         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 352         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 353         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 354         srb_t *sp;
 355         int rval;
 356
 357         rval = fc_remote_port_chkready(rport);
 358         if (rval) {
 359                 cmd->result = rval;
 360                 goto qc_fail_command;
 361         }
 362
 363         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 364                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 365                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 366                         cmd->result = DID_NO_CONNECT << 16;
 367                         goto qc_fail_command;
 368                 }
 369                 goto qc_host_busy;
 370         }
 371
 372         spin_unlock_irq(ha->host->host_lock);
 373
 374         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 375         if (!sp)
 376                 goto qc_host_busy_lock;
 377
 378         rval = qla2x00_start_scsi(sp);
 379         if (rval != QLA_SUCCESS)
 380                 goto qc_host_busy_free_sp;
 381
 382         spin_lock_irq(ha->host->host_lock);
 383
 384         return 0;
 385
 386 qc_host_busy_free_sp:
 387         qla2x00_sp_free_dma(ha, sp);
 388         mempool_free(sp, ha->srb_mempool);
 389
 390 qc_host_busy_lock:
 391         spin_lock_irq(ha->host->host_lock);
 392
 393 qc_host_busy:
 394         return SCSI_MLQUEUE_HOST_BUSY;
 395
 396 qc_fail_command:
 397         done(cmd);
 398
 399         return 0;
 400 }
 401
 402
 403 static int
 404 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 405 {
 406         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 407         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 408         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 409         srb_t *sp;
 410         int rval;
 411
 412         rval = fc_remote_port_chkready(rport);
 413         if (rval) {
 414                 cmd->result = rval;
 415                 goto qc24_fail_command;
 416         }
 417
 418         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 419                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 420                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 421                         cmd->result = DID_NO_CONNECT << 16;
 422                         goto qc24_fail_command;
 423                 }
 424                 goto qc24_host_busy;
 425         }
 426
 427         spin_unlock_irq(ha->host->host_lock);
 428
 429         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 430         if (!sp)
 431                 goto qc24_host_busy_lock;
 432
 433         rval = qla24xx_start_scsi(sp);
 434         if (rval != QLA_SUCCESS)
 435                 goto qc24_host_busy_free_sp;
 436
 437         spin_lock_irq(ha->host->host_lock);
 438
 439         return 0;
 440
 441 qc24_host_busy_free_sp:
 442         qla2x00_sp_free_dma(ha, sp);
 443         mempool_free(sp, ha->srb_mempool);
 444
 445 qc24_host_busy_lock:
 446         spin_lock_irq(ha->host->host_lock);
 447
 448 qc24_host_busy:
 449         return SCSI_MLQUEUE_HOST_BUSY;
 450
 451 qc24_fail_command:
 452         done(cmd);
 453
 454         return 0;
 455 }
 456
 457
 458 /*
 459  * qla2x00_eh_wait_on_command
 460  *    Waits for the command to be returned by the Firmware for some
 461  *    max time.
 462  *
 463  * Input:
 464  *    ha = actual ha whose done queue will contain the command
 465  *            returned by firmware.
 466  *    cmd = Scsi Command to wait on.
 467  *    flag = Abort/Reset(Bus or Device Reset)
 468  *
 469  * Return:
 470  *    Not Found : 0
 471  *    Found : 1
 472  */
 473 static int
 474 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 475 {
 476 #define ABORT_POLLING_PERIOD    1000
 477 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 478         unsigned long wait_iter = ABORT_WAIT_ITER;
 479         int ret = QLA_SUCCESS;
 480
 481         while (CMD_SP(cmd)) {
 482                 msleep(ABORT_POLLING_PERIOD);
 483
 484                 if (--wait_iter)
 485                         break;
 486         }
 487         if (CMD_SP(cmd))
 488                 ret = QLA_FUNCTION_FAILED;
 489
 490         return ret;
 491 }
 492
 493 /*
 494  * qla2x00_wait_for_hba_online
 495  *    Wait till the HBA is online after going through
 496  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 497  *    finally HBA is disabled ie marked offline
 498  *
 499  * Input:
 500  *     ha - pointer to host adapter structure
 501  *
 502  * Note:
 503  *    Does context switching-Release SPIN_LOCK
 504  *    (if any) before calling this routine.
 505  *
 506  * Return:
 507  *    Success (Adapter is online) : 0
 508  *    Failed  (Adapter is offline/disabled) : 1
 509  */
 510 static int
 511 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 512 {
 513         int             return_status;
 514         unsigned long   wait_online;
 515
 516         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 517         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 518             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 519             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 520             ha->dpc_active) && time_before(jiffies, wait_online)) {
 521
 522                 msleep(1000);
 523         }
 524         if (ha->flags.online)
 525                 return_status = QLA_SUCCESS;
 526         else
 527                 return_status = QLA_FUNCTION_FAILED;
 528
 529         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 530
 531         return (return_status);
 532 }
 533
 534 /*
 535  * qla2x00_wait_for_loop_ready
 536  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 537  *    to be in LOOP_READY state.
 538  * Input:
 539  *     ha - pointer to host adapter structure
 540  *
 541  * Note:
 542  *    Does context switching-Release SPIN_LOCK
 543  *    (if any) before calling this routine.
 544  *
 545  *
 546  * Return:
 547  *    Success (LOOP_READY) : 0
 548  *    Failed  (LOOP_NOT_READY) : 1
 549  */
 550 static inline int
 551 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 552 {
 553         int      return_status = QLA_SUCCESS;
 554         unsigned long loop_timeout ;
 555
 556         /* wait for 5 min at the max for loop to be ready */
 557         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 558
 559         while ((!atomic_read(&ha->loop_down_timer) &&
 560             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 561             atomic_read(&ha->loop_state) != LOOP_READY) {
 562                 msleep(1000);
 563                 if (time_after_eq(jiffies, loop_timeout)) {
 564                         return_status = QLA_FUNCTION_FAILED;
 565                         break;
 566                 }
 567         }
 568         return (return_status);
 569 }
 570
 571 /**************************************************************************
 572 * qla2xxx_eh_abort
 573 *
 574 * Description:
 575 *    The abort function will abort the specified command.
 576 *
 577 * Input:
 578 *    cmd = Linux SCSI command packet to be aborted.
 579 *
 580 * Returns:
 581 *    Either SUCCESS or FAILED.
 582 *
 583 * Note:
 584 **************************************************************************/
 585 int
 586 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 587 {
 588         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 589         srb_t *sp;
 590         int ret, i;
 591         unsigned int id, lun;
 592         unsigned long serial;
 593         unsigned long flags;
 594
 595         if (!CMD_SP(cmd))
 596                 return FAILED;
 597
 598         ret = FAILED;
 599
 600         id = cmd->device->id;
 601         lun = cmd->device->lun;
 602         serial = cmd->serial_number;
 603
 604         /* Check active list for command command. */
 605         spin_lock_irqsave(&ha->hardware_lock, flags);
 606         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 607                 sp = ha->outstanding_cmds[i];
 608
 609                 if (sp == NULL)
 610                         continue;
 611
 612                 if (sp->cmd != cmd)
 613                         continue;
 614
 615                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 616                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 617                     sp->state));
 618                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 619
 620                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 621                 if (ha->isp_ops.abort_command(ha, sp)) {
 622                         DEBUG2(printk("%s(%ld): abort_command "
 623                             "mbx failed.\n", __func__, ha->host_no));
 624                 } else {
 625                         DEBUG3(printk("%s(%ld): abort_command "
 626                             "mbx success.\n", __func__, ha->host_no));
 627                         ret = SUCCESS;
 628                 }
 629                 spin_lock_irqsave(&ha->hardware_lock, flags);
 630
 631                 break;
 632         }
 633         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 634
 635         /* Wait for the command to be returned. */
 636         if (ret == SUCCESS) {
 637                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 638                         qla_printk(KERN_ERR, ha,
 639                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 640                             "%x.\n", ha->host_no, id, lun, serial, ret);
 641                 }
 642         }
 643
 644         qla_printk(KERN_INFO, ha,
 645             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 646             id, lun, serial, ret);
 647
 648         return ret;
 649 }
 650
 651 /**************************************************************************
 652 * qla2x00_eh_wait_for_pending_target_commands
 653 *
 654 * Description:
 655 *    Waits for all the commands to come back from the specified target.
 656 *
 657 * Input:
 658 *    ha - pointer to scsi_qla_host structure.
 659 *    t  - target
 660 * Returns:
 661 *    Either SUCCESS or FAILED.
 662 *
 663 * Note:
 664 **************************************************************************/
 665 static int
 666 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 667 {
 668         int     cnt;
 669         int     status;
 670         srb_t           *sp;
 671         struct scsi_cmnd *cmd;
 672         unsigned long flags;
 673
 674         status = 0;
 675
 676         /*
 677          * Waiting for all commands for the designated target in the active
 678          * array
 679          */
 680         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 681                 spin_lock_irqsave(&ha->hardware_lock, flags);
 682                 sp = ha->outstanding_cmds[cnt];
 683                 if (sp) {
 684                         cmd = sp->cmd;
 685                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 686                         if (cmd->device->id == t) {
 687                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 688                                         status = 1;
 689                                         break;
 690                                 }
 691                         }
 692                 } else {
 693                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 694                 }
 695         }
 696         return (status);
 697 }
 698
 699
 700 /**************************************************************************
 701 * qla2xxx_eh_device_reset
 702 *
 703 * Description:
 704 *    The device reset function will reset the target and abort any
 705 *    executing commands.
 706 *
 707 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 708 *          attempt to use this value, even if you determine it is
 709 *          non-null.
 710 *
 711 * Input:
 712 *    cmd = Linux SCSI command packet of the command that cause the
 713 *          bus device reset.
 714 *
 715 * Returns:
 716 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 717 *
 718 **************************************************************************/
 719 int
 720 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 721 {
 722         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 723         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 724         srb_t *sp;
 725         int ret;
 726         unsigned int id, lun;
 727         unsigned long serial;
 728
 729         ret = FAILED;
 730
 731         id = cmd->device->id;
 732         lun = cmd->device->lun;
 733         serial = cmd->serial_number;
 734
 735         sp = (srb_t *) CMD_SP(cmd);
 736         if (!sp || !fcport)
 737                 return ret;
 738
 739         qla_printk(KERN_INFO, ha,
 740             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 741
 742         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 743                 goto eh_dev_reset_done;
 744
 745         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 746                 if (qla2x00_device_reset(ha, fcport) == 0)
 747                         ret = SUCCESS;
 748
 749 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 750                 if (ret == SUCCESS) {
 751                         if (fcport->flags & FC_FABRIC_DEVICE) {
 752                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 753                                 qla2x00_mark_device_lost(ha, fcport);
 754                         }
 755                 }
 756 #endif
 757         } else {
 758                 DEBUG2(printk(KERN_INFO
 759                     "%s failed: loop not ready\n",__func__);)
 760         }
 761
 762         if (ret == FAILED) {
 763                 DEBUG3(printk("%s(%ld): device reset failed\n",
 764                     __func__, ha->host_no));
 765                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 766                     __func__);
 767
 768                 goto eh_dev_reset_done;
 769         }
 770
 771         /* Flush outstanding commands. */
 772         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 773                 ret = FAILED;
 774         if (ret == FAILED) {
 775                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 776                     __func__, ha->host_no));
 777                 qla_printk(KERN_INFO, ha,
 778                     "%s: failed while waiting for commands\n", __func__);
 779         } else
 780                 qla_printk(KERN_INFO, ha,
 781                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 782                     id, lun);
 783  eh_dev_reset_done:
 784         return ret;
 785 }
 786
 787 /**************************************************************************
 788 * qla2x00_eh_wait_for_pending_commands
 789 *
 790 * Description:
 791 *    Waits for all the commands to come back from the specified host.
 792 *
 793 * Input:
 794 *    ha - pointer to scsi_qla_host structure.
 795 *
 796 * Returns:
 797 *    1 : SUCCESS
 798 *    0 : FAILED
 799 *
 800 * Note:
 801 **************************************************************************/
 802 static int
 803 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 804 {
 805         int     cnt;
 806         int     status;
 807         srb_t           *sp;
 808         struct scsi_cmnd *cmd;
 809         unsigned long flags;
 810
 811         status = 1;
 812
 813         /*
 814          * Waiting for all commands for the designated target in the active
 815          * array
 816          */
 817         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 818                 spin_lock_irqsave(&ha->hardware_lock, flags);
 819                 sp = ha->outstanding_cmds[cnt];
 820                 if (sp) {
 821                         cmd = sp->cmd;
 822                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 823                         status = qla2x00_eh_wait_on_command(ha, cmd);
 824                         if (status == 0)
 825                                 break;
 826                 }
 827                 else {
 828                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 829                 }
 830         }
 831         return (status);
 832 }
 833
 834
 835 /**************************************************************************
 836 * qla2xxx_eh_bus_reset
 837 *
 838 * Description:
 839 *    The bus reset function will reset the bus and abort any executing
 840 *    commands.
 841 *
 842 * Input:
 843 *    cmd = Linux SCSI command packet of the command that cause the
 844 *          bus reset.
 845 *
 846 * Returns:
 847 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 848 *
 849 **************************************************************************/
 850 int
 851 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 852 {
 853         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 854         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 855         srb_t *sp;
 856         int ret;
 857         unsigned int id, lun;
 858         unsigned long serial;
 859
 860         ret = FAILED;
 861
 862         id = cmd->device->id;
 863         lun = cmd->device->lun;
 864         serial = cmd->serial_number;
 865
 866         sp = (srb_t *) CMD_SP(cmd);
 867         if (!sp || !fcport)
 868                 return ret;
 869
 870         qla_printk(KERN_INFO, ha,
 871             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 872
 873         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 874                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 875                 goto eh_bus_reset_done;
 876         }
 877
 878         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 879                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 880                         ret = SUCCESS;
 881         }
 882         if (ret == FAILED)
 883                 goto eh_bus_reset_done;
 884
 885         /* Flush outstanding commands. */
 886         if (!qla2x00_eh_wait_for_pending_commands(ha))
 887                 ret = FAILED;
 888
 889 eh_bus_reset_done:
 890         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 891             (ret == FAILED) ? "failed" : "succeded");
 892
 893         return ret;
 894 }
 895
 896 /**************************************************************************
 897 * qla2xxx_eh_host_reset
 898 *
 899 * Description:
 900 *    The reset function will reset the Adapter.
 901 *
 902 * Input:
 903 *      cmd = Linux SCSI command packet of the command that cause the
 904 *            adapter reset.
 905 *
 906 * Returns:
 907 *      Either SUCCESS or FAILED.
 908 *
 909 * Note:
 910 **************************************************************************/
 911 int
 912 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 913 {
 914         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 915         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 916         srb_t *sp;
 917         int ret;
 918         unsigned int id, lun;
 919         unsigned long serial;
 920
 921         ret = FAILED;
 922
 923         id = cmd->device->id;
 924         lun = cmd->device->lun;
 925         serial = cmd->serial_number;
 926
 927         sp = (srb_t *) CMD_SP(cmd);
 928         if (!sp || !fcport)
 929                 return ret;
 930
 931         qla_printk(KERN_INFO, ha,
 932             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 933
 934         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 935                 goto eh_host_reset_lock;
 936
 937         /*
 938          * Fixme-may be dpc thread is active and processing
 939          * loop_resync,so wait a while for it to
 940          * be completed and then issue big hammer.Otherwise
 941          * it may cause I/O failure as big hammer marks the
 942          * devices as lost kicking of the port_down_timer
 943          * while dpc is stuck for the mailbox to complete.
 944          */
 945         qla2x00_wait_for_loop_ready(ha);
 946         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 947         if (qla2x00_abort_isp(ha)) {
 948                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 949                 /* failed. schedule dpc to try */
 950                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 951
 952                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 953                         goto eh_host_reset_lock;
 954         }
 955         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 956
 957         /* Waiting for our command in done_queue to be returned to OS.*/
 958         if (qla2x00_eh_wait_for_pending_commands(ha))
 959                 ret = SUCCESS;
 960
 961 eh_host_reset_lock:
 962         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 963             (ret == FAILED) ? "failed" : "succeded");
 964
 965         return ret;
 966 }
 967
 968 /*
 969 * qla2x00_loop_reset
 970 *      Issue loop reset.
 971 *
 972 * Input:
 973 *      ha = adapter block pointer.
 974 *
 975 * Returns:
 976 *      0 = success
 977 */
 978 static int
 979 qla2x00_loop_reset(scsi_qla_host_t *ha)
 980 {
 981         int status = QLA_SUCCESS;
 982         struct fc_port *fcport;
 983
 984         if (ha->flags.enable_lip_reset) {
 985                 status = qla2x00_lip_reset(ha);
 986         }
 987
 988         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
 989                 list_for_each_entry(fcport, &ha->fcports, list) {
 990                         if (fcport->port_type != FCT_TARGET)
 991                                 continue;
 992
 993                         status = qla2x00_device_reset(ha, fcport);
 994                         if (status != QLA_SUCCESS)
 995                                 break;
 996                 }
 997         }
 998
 999         if (status == QLA_SUCCESS &&
1000                 ((!ha->flags.enable_target_reset &&
1001                   !ha->flags.enable_lip_reset) ||
1002                 ha->flags.enable_lip_full_login)) {
1003
1004                 status = qla2x00_full_login_lip(ha);
1005         }
1006
1007         /* Issue marker command only when we are going to start the I/O */
1008         ha->marker_needed = 1;
1009
1010         if (status) {
1011                 /* Empty */
1012                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1013                                 __func__,
1014                                 ha->host_no);)
1015         } else {
1016                 /* Empty */
1017                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1018                                 __func__,
1019                                 ha->host_no);)
1020         }
1021
1022         return(status);
1023 }
1024
1025 /*
1026  * qla2x00_device_reset
1027  *      Issue bus device reset message to the target.
1028  *
1029  * Input:
1030  *      ha = adapter block pointer.
1031  *      t = SCSI ID.
1032  *      TARGET_QUEUE_LOCK must be released.
1033  *      ADAPTER_STATE_LOCK must be released.
1034  *
1035  * Context:
1036  *      Kernel context.
1037  */
1038 static int
1039 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1040 {
1041         /* Abort Target command will clear Reservation */
1042         return ha->isp_ops.abort_target(reset_fcport);
1043 }
1044
1045 static int
1046 qla2xxx_slave_alloc(struct scsi_device *sdev)
1047 {
1048         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1049
1050         if (!rport || fc_remote_port_chkready(rport))
1051                 return -ENXIO;
1052
1053         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1054
1055         return 0;
1056 }
1057
1058 static int
1059 qla2xxx_slave_configure(struct scsi_device *sdev)
1060 {
1061         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1062         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1063
1064         if (sdev->tagged_supported)
1065                 scsi_activate_tcq(sdev, 32);
1066         else
1067                 scsi_deactivate_tcq(sdev, 32);
1068
1069         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1070
1071         return 0;
1072 }
1073
1074 static void
1075 qla2xxx_slave_destroy(struct scsi_device *sdev)
1076 {
1077         sdev->hostdata = NULL;
1078 }
1079
1080 static int
1081 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1082 {
1083         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1084         return sdev->queue_depth;
1085 }
1086
1087 static int
1088 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1089 {
1090         if (sdev->tagged_supported) {
1091                 scsi_set_tag_type(sdev, tag_type);
1092                 if (tag_type)
1093                         scsi_activate_tcq(sdev, sdev->queue_depth);
1094                 else
1095                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1096         } else
1097                 tag_type = 0;
1098
1099         return tag_type;
1100 }
1101
1102 /**
1103  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1104  * @ha: HA context
1105  *
1106  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1107  * supported addressing method.
1108  */
1109 static void
1110 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1111 {
1112         /* Assume a 32bit DMA mask. */
1113         ha->flags.enable_64bit_addressing = 0;
1114
1115         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1116                 /* Any upper-dword bits set? */
1117                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1118                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1119                         /* Ok, a 64bit DMA mask is applicable. */
1120                         ha->flags.enable_64bit_addressing = 1;
1121                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1122                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1123                         return;
1124                 }
1125         }
1126
1127         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1128         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1129 }
1130
1131 static int
1132 qla2x00_iospace_config(scsi_qla_host_t *ha)
1133 {
1134         unsigned long   pio, pio_len, pio_flags;
1135         unsigned long   mmio, mmio_len, mmio_flags;
1136
1137         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1138         pio = pci_resource_start(ha->pdev, 0);
1139         pio_len = pci_resource_len(ha->pdev, 0);
1140         pio_flags = pci_resource_flags(ha->pdev, 0);
1141         if (pio_flags & IORESOURCE_IO) {
1142                 if (pio_len < MIN_IOBASE_LEN) {
1143                         qla_printk(KERN_WARNING, ha,
1144                             "Invalid PCI I/O region size (%s)...\n",
1145                                 pci_name(ha->pdev));
1146                         pio = 0;
1147                 }
1148         } else {
1149                 qla_printk(KERN_WARNING, ha,
1150                     "region #0 not a PIO resource (%s)...\n",
1151                     pci_name(ha->pdev));
1152                 pio = 0;
1153         }
1154
1155         /* Use MMIO operations for all accesses. */
1156         mmio = pci_resource_start(ha->pdev, 1);
1157         mmio_len = pci_resource_len(ha->pdev, 1);
1158         mmio_flags = pci_resource_flags(ha->pdev, 1);
1159
1160         if (!(mmio_flags & IORESOURCE_MEM)) {
1161                 qla_printk(KERN_ERR, ha,
1162                     "region #0 not an MMIO resource (%s), aborting\n",
1163                     pci_name(ha->pdev));
1164                 goto iospace_error_exit;
1165         }
1166         if (mmio_len < MIN_IOBASE_LEN) {
1167                 qla_printk(KERN_ERR, ha,
1168                     "Invalid PCI mem region size (%s), aborting\n",
1169                         pci_name(ha->pdev));
1170                 goto iospace_error_exit;
1171         }
1172
1173         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1174                 qla_printk(KERN_WARNING, ha,
1175                     "Failed to reserve PIO/MMIO regions (%s)\n",
1176                     pci_name(ha->pdev));
1177
1178                 goto iospace_error_exit;
1179         }
1180
1181         ha->pio_address = pio;
1182         ha->pio_length = pio_len;
1183         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1184         if (!ha->iobase) {
1185                 qla_printk(KERN_ERR, ha,
1186                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1187
1188                 goto iospace_error_exit;
1189         }
1190
1191         return (0);
1192
1193 iospace_error_exit:
1194         return (-ENOMEM);
1195 }
1196
1197 static void
1198 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1199 {
1200         unsigned long flags = 0;
1201         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1202
1203         spin_lock_irqsave(&ha->hardware_lock, flags);
1204         ha->interrupts_on = 1;
1205         /* enable risc and host interrupts */
1206         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1207         RD_REG_WORD(&reg->ictrl);
1208         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1209
1210 }
1211
1212 static void
1213 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1214 {
1215         unsigned long flags = 0;
1216         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1217
1218         spin_lock_irqsave(&ha->hardware_lock, flags);
1219         ha->interrupts_on = 0;
1220         /* disable risc and host interrupts */
1221         WRT_REG_WORD(&reg->ictrl, 0);
1222         RD_REG_WORD(&reg->ictrl);
1223         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1224 }
1225
1226 static void
1227 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1228 {
1229         unsigned long flags = 0;
1230         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1231
1232         spin_lock_irqsave(&ha->hardware_lock, flags);
1233         ha->interrupts_on = 1;
1234         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1235         RD_REG_DWORD(&reg->ictrl);
1236         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1237 }
1238
1239 static void
1240 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1241 {
1242         unsigned long flags = 0;
1243         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1244
1245         spin_lock_irqsave(&ha->hardware_lock, flags);
1246         ha->interrupts_on = 0;
1247         WRT_REG_DWORD(&reg->ictrl, 0);
1248         RD_REG_DWORD(&reg->ictrl);
1249         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1250 }
1251
1252 /*
1253  * PCI driver interface
1254  */
1255 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1256 {
1257         int     ret = -ENODEV;
1258         device_reg_t __iomem *reg;
1259         struct Scsi_Host *host;
1260         scsi_qla_host_t *ha;
1261         unsigned long   flags = 0;
1262         unsigned long   wait_switch = 0;
1263         char pci_info[20];
1264         char fw_str[30];
1265         fc_port_t *fcport;
1266         struct scsi_host_template *sht;
1267
1268         if (pci_enable_device(pdev))
1269                 goto probe_out;
1270
1271         sht = &qla2x00_driver_template;
1272         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1273             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1274                 sht = &qla24xx_driver_template;
1275         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1276         if (host == NULL) {
1277                 printk(KERN_WARNING
1278                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1279                 goto probe_disable_device;
1280         }
1281
1282         /* Clear our data area */
1283         ha = (scsi_qla_host_t *)host->hostdata;
1284         memset(ha, 0, sizeof(scsi_qla_host_t));
1285
1286         ha->pdev = pdev;
1287         ha->host = host;
1288         ha->host_no = host->host_no;
1289         ha->brd_info = brd_info;
1290         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1291
1292         ha->dpc_pid = -1;
1293
1294         /* Configure PCI I/O space */
1295         ret = qla2x00_iospace_config(ha);
1296         if (ret)
1297                 goto probe_failed;
1298
1299         qla_printk(KERN_INFO, ha,
1300             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1301             ha->iobase);
1302
1303         spin_lock_init(&ha->hardware_lock);
1304
1305         ha->prev_topology = 0;
1306         ha->ports = MAX_BUSES;
1307         ha->init_cb_size = sizeof(init_cb_t);
1308         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1309
1310         /* Assign ISP specific operations. */
1311         ha->isp_ops.pci_config          = qla2100_pci_config;
1312         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1313         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1314         ha->isp_ops.config_rings        = qla2x00_config_rings;
1315         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1316         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1317         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1318         ha->isp_ops.load_risc           = qla2x00_load_risc;
1319         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1320         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1321         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1322         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1323         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1324         ha->isp_ops.abort_command       = qla2x00_abort_command;
1325         ha->isp_ops.abort_target        = qla2x00_abort_target;
1326         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1327         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1328         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1329         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1330         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1331         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1332         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1333         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1334         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1335         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1336         if (IS_QLA2100(ha)) {
1337                 host->max_id = MAX_TARGETS_2100;
1338                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1339                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1340                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1341                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1342                 host->sg_tablesize = 32;
1343                 ha->gid_list_info_size = 4;
1344         } else if (IS_QLA2200(ha)) {
1345                 host->max_id = MAX_TARGETS_2200;
1346                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1347                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1348                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1349                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1350                 ha->gid_list_info_size = 4;
1351         } else if (IS_QLA23XX(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_2300;
1356                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1357                 ha->isp_ops.pci_config = qla2300_pci_config;
1358                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1359                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1360                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1361                 ha->gid_list_info_size = 6;
1362         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1363                 host->max_id = MAX_TARGETS_2200;
1364                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1365                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1366                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1367                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1368                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1369                 ha->mgmt_svr_loop_id = 10;
1370                 ha->isp_ops.pci_config = qla24xx_pci_config;
1371                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1372                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1373                 ha->isp_ops.config_rings = qla24xx_config_rings;
1374                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1375                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1376                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1377                 ha->isp_ops.load_risc = qla24xx_load_risc;
1378 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1379                 if (ql2xfwloadflash)
1380                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1381 #endif
1382                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1383                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1384                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1385                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1386                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1387                 ha->isp_ops.abort_command = qla24xx_abort_command;
1388                 ha->isp_ops.abort_target = qla24xx_abort_target;
1389                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1390                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1391                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1392                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1393                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1394                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1395                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1396                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1397                 ha->gid_list_info_size = 8;
1398         }
1399         host->can_queue = ha->request_q_length + 128;
1400
1401         /* load the F/W, read paramaters, and init the H/W */
1402         ha->instance = num_hosts;
1403
1404         init_MUTEX(&ha->mbx_cmd_sem);
1405         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1406
1407         INIT_LIST_HEAD(&ha->list);
1408         INIT_LIST_HEAD(&ha->fcports);
1409         INIT_LIST_HEAD(&ha->rscn_fcports);
1410
1411         /*
1412          * These locks are used to prevent more than one CPU
1413          * from modifying the queue at the same time. The
1414          * higher level "host_lock" will reduce most
1415          * contention for these locks.
1416          */
1417         spin_lock_init(&ha->mbx_reg_lock);
1418
1419         init_completion(&ha->dpc_inited);
1420         init_completion(&ha->dpc_exited);
1421
1422         qla2x00_config_dma_addressing(ha);
1423         if (qla2x00_mem_alloc(ha)) {
1424                 qla_printk(KERN_WARNING, ha,
1425                     "[ERROR] Failed to allocate memory for adapter\n");
1426
1427                 ret = -ENOMEM;
1428                 goto probe_failed;
1429         }
1430
1431         if (qla2x00_initialize_adapter(ha) &&
1432             !(ha->device_flags & DFLG_NO_CABLE)) {
1433
1434                 qla_printk(KERN_WARNING, ha,
1435                     "Failed to initialize adapter\n");
1436
1437                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1438                     "Adapter flags %x.\n",
1439                     ha->host_no, ha->device_flags));
1440
1441                 ret = -ENODEV;
1442                 goto probe_failed;
1443         }
1444
1445         /*
1446          * Startup the kernel thread for this host adapter
1447          */
1448         ha->dpc_should_die = 0;
1449         ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1450         if (ha->dpc_pid < 0) {
1451                 qla_printk(KERN_WARNING, ha,
1452                     "Unable to start DPC thread!\n");
1453
1454                 ret = -ENODEV;
1455                 goto probe_failed;
1456         }
1457         wait_for_completion(&ha->dpc_inited);
1458
1459         host->this_id = 255;
1460         host->cmd_per_lun = 3;
1461         host->unique_id = ha->instance;
1462         host->max_cmd_len = MAX_CMDSZ;
1463         host->max_channel = ha->ports - 1;
1464         host->max_lun = MAX_LUNS;
1465         host->transportt = qla2xxx_transport_template;
1466
1467         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1468             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1469         if (ret) {
1470                 qla_printk(KERN_WARNING, ha,
1471                     "Failed to reserve interrupt %d already in use.\n",
1472                     pdev->irq);
1473                 goto probe_failed;
1474         }
1475         host->irq = pdev->irq;
1476
1477         /* Initialized the timer */
1478         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1479
1480         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1481             ha->host_no, ha));
1482
1483         ha->isp_ops.disable_intrs(ha);
1484
1485         spin_lock_irqsave(&ha->hardware_lock, flags);
1486         reg = ha->iobase;
1487         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1488                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1489                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1490         } else {
1491                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1492                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1493                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1494
1495                 /* Enable proper parity */
1496                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1497                         if (IS_QLA2300(ha))
1498                                 /* SRAM parity */
1499                                 WRT_REG_WORD(&reg->isp.hccr,
1500                                     (HCCR_ENABLE_PARITY + 0x1));
1501                         else
1502                                 /* SRAM, Instruction RAM and GP RAM parity */
1503                                 WRT_REG_WORD(&reg->isp.hccr,
1504                                     (HCCR_ENABLE_PARITY + 0x7));
1505                 }
1506         }
1507         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1508
1509         ha->isp_ops.enable_intrs(ha);
1510
1511         /* v2.19.5b6 */
1512         /*
1513          * Wait around max loop_reset_delay secs for the devices to come
1514          * on-line. We don't want Linux scanning before we are ready.
1515          *
1516          */
1517         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1518             time_before(jiffies,wait_switch) &&
1519              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1520              && (ha->device_flags & SWITCH_FOUND) ;) {
1521
1522                 qla2x00_check_fabric_devices(ha);
1523
1524                 msleep(10);
1525         }
1526
1527         pci_set_drvdata(pdev, ha);
1528         ha->flags.init_done = 1;
1529         num_hosts++;
1530
1531         ret = scsi_add_host(host, &pdev->dev);
1532         if (ret)
1533                 goto probe_failed;
1534
1535         qla2x00_alloc_sysfs_attr(ha);
1536
1537         qla2x00_init_host_attr(ha);
1538
1539         qla_printk(KERN_INFO, ha, "\n"
1540             " QLogic Fibre Channel HBA Driver: %s\n"
1541             "  QLogic %s - %s\n"
1542             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1543             qla2x00_version_str, ha->model_number,
1544             ha->model_desc ? ha->model_desc: "", pdev->device,
1545             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1546             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1547             ha->isp_ops.fw_version_str(ha, fw_str));
1548
1549         /* Go with fc_rport registration. */
1550         list_for_each_entry(fcport, &ha->fcports, list)
1551                 qla2x00_reg_remote_port(ha, fcport);
1552
1553         return 0;
1554
1555 probe_failed:
1556         qla2x00_free_device(ha);
1557
1558         scsi_host_put(host);
1559
1560 probe_disable_device:
1561         pci_disable_device(pdev);
1562
1563 probe_out:
1564         return ret;
1565 }
1566 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1567
1568 void qla2x00_remove_one(struct pci_dev *pdev)
1569 {
1570         scsi_qla_host_t *ha;
1571
1572         ha = pci_get_drvdata(pdev);
1573
1574         qla2x00_free_sysfs_attr(ha);
1575
1576         fc_remove_host(ha->host);
1577
1578         scsi_remove_host(ha->host);
1579
1580         qla2x00_free_device(ha);
1581
1582         scsi_host_put(ha->host);
1583
1584         pci_set_drvdata(pdev, NULL);
1585 }
1586 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1587
1588 static void
1589 qla2x00_free_device(scsi_qla_host_t *ha)
1590 {
1591         int ret;
1592
1593         /* Abort any outstanding IO descriptors. */
1594         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1595                 qla2x00_cancel_io_descriptors(ha);
1596
1597         /* Disable timer */
1598         if (ha->timer_active)
1599                 qla2x00_stop_timer(ha);
1600
1601         /* Kill the kernel thread for this host */
1602         if (ha->dpc_pid >= 0) {
1603                 ha->dpc_should_die = 1;
1604                 wmb();
1605                 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1606                 if (ret) {
1607                         qla_printk(KERN_ERR, ha,
1608                             "Unable to signal DPC thread -- (%d)\n", ret);
1609
1610                         /* TODO: SOMETHING MORE??? */
1611                 } else {
1612                         wait_for_completion(&ha->dpc_exited);
1613                 }
1614         }
1615
1616         /* Stop currently executing firmware. */
1617         qla2x00_stop_firmware(ha);
1618
1619         /* turn-off interrupts on the card */
1620         if (ha->interrupts_on)
1621                 ha->isp_ops.disable_intrs(ha);
1622
1623         qla2x00_mem_free(ha);
1624
1625         ha->flags.online = 0;
1626
1627         /* Detach interrupts */
1628         if (ha->pdev->irq)
1629                 free_irq(ha->pdev->irq, ha);
1630
1631         /* release io space registers  */
1632         if (ha->iobase)
1633                 iounmap(ha->iobase);
1634         pci_release_regions(ha->pdev);
1635
1636         pci_disable_device(ha->pdev);
1637 }
1638
1639 /*
1640  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1641  *
1642  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1643  *
1644  * Return: None.
1645  *
1646  * Context:
1647  */
1648 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1649     int do_login)
1650 {
1651         if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1652                 schedule_work(&fcport->rport_del_work);
1653
1654         /*
1655          * We may need to retry the login, so don't change the state of the
1656          * port but do the retries.
1657          */
1658         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1659                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1660
1661         if (!do_login)
1662                 return;
1663
1664         if (fcport->login_retry == 0) {
1665                 fcport->login_retry = ha->login_retry_count;
1666                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1667
1668                 DEBUG(printk("scsi(%ld): Port login retry: "
1669                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1670                     "id = 0x%04x retry cnt=%d\n",
1671                     ha->host_no,
1672                     fcport->port_name[0],
1673                     fcport->port_name[1],
1674                     fcport->port_name[2],
1675                     fcport->port_name[3],
1676                     fcport->port_name[4],
1677                     fcport->port_name[5],
1678                     fcport->port_name[6],
1679                     fcport->port_name[7],
1680                     fcport->loop_id,
1681                     fcport->login_retry));
1682         }
1683 }
1684
1685 /*
1686  * qla2x00_mark_all_devices_lost
1687  *      Updates fcport state when device goes offline.
1688  *
1689  * Input:
1690  *      ha = adapter block pointer.
1691  *      fcport = port structure pointer.
1692  *
1693  * Return:
1694  *      None.
1695  *
1696  * Context:
1697  */
1698 void
1699 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1700 {
1701         fc_port_t *fcport;
1702
1703         list_for_each_entry(fcport, &ha->fcports, list) {
1704                 if (fcport->port_type != FCT_TARGET)
1705                         continue;
1706
1707                 /*
1708                  * No point in marking the device as lost, if the device is
1709                  * already DEAD.
1710                  */
1711                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1712                         continue;
1713                 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1714                         schedule_work(&fcport->rport_del_work);
1715                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1716         }
1717 }
1718
1719 /*
1720 * qla2x00_mem_alloc
1721 *      Allocates adapter memory.
1722 *
1723 * Returns:
1724 *      0  = success.
1725 *      1  = failure.
1726 */
1727 static uint8_t
1728 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1729 {
1730         char    name[16];
1731         uint8_t   status = 1;
1732         int     retry= 10;
1733
1734         do {
1735                 /*
1736                  * This will loop only once if everything goes well, else some
1737                  * number of retries will be performed to get around a kernel
1738                  * bug where available mem is not allocated until after a
1739                  * little delay and a retry.
1740                  */
1741                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1742                     (ha->request_q_length + 1) * sizeof(request_t),
1743                     &ha->request_dma, GFP_KERNEL);
1744                 if (ha->request_ring == NULL) {
1745                         qla_printk(KERN_WARNING, ha,
1746                             "Memory Allocation failed - request_ring\n");
1747
1748                         qla2x00_mem_free(ha);
1749                         msleep(100);
1750
1751                         continue;
1752                 }
1753
1754                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1755                     (ha->response_q_length + 1) * sizeof(response_t),
1756                     &ha->response_dma, GFP_KERNEL);
1757                 if (ha->response_ring == NULL) {
1758                         qla_printk(KERN_WARNING, ha,
1759                             "Memory Allocation failed - response_ring\n");
1760
1761                         qla2x00_mem_free(ha);
1762                         msleep(100);
1763
1764                         continue;
1765                 }
1766
1767                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1768                     &ha->gid_list_dma, GFP_KERNEL);
1769                 if (ha->gid_list == NULL) {
1770                         qla_printk(KERN_WARNING, ha,
1771                             "Memory Allocation failed - gid_list\n");
1772
1773                         qla2x00_mem_free(ha);
1774                         msleep(100);
1775
1776                         continue;
1777                 }
1778
1779                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1780                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1781                 if (ha->rlc_rsp == NULL) {
1782                         qla_printk(KERN_WARNING, ha,
1783                                 "Memory Allocation failed - rlc");
1784
1785                         qla2x00_mem_free(ha);
1786                         msleep(100);
1787
1788                         continue;
1789                 }
1790
1791                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1792                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1793                     DMA_POOL_SIZE, 8, 0);
1794                 if (ha->s_dma_pool == NULL) {
1795                         qla_printk(KERN_WARNING, ha,
1796                             "Memory Allocation failed - s_dma_pool\n");
1797
1798                         qla2x00_mem_free(ha);
1799                         msleep(100);
1800
1801                         continue;
1802                 }
1803
1804                 /* get consistent memory allocated for init control block */
1805                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1806                     &ha->init_cb_dma);
1807                 if (ha->init_cb == NULL) {
1808                         qla_printk(KERN_WARNING, ha,
1809                             "Memory Allocation failed - init_cb\n");
1810
1811                         qla2x00_mem_free(ha);
1812                         msleep(100);
1813
1814                         continue;
1815                 }
1816                 memset(ha->init_cb, 0, ha->init_cb_size);
1817
1818                 /* Get consistent memory allocated for Get Port Database cmd */
1819                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1820                     &ha->iodesc_pd_dma);
1821                 if (ha->iodesc_pd == NULL) {
1822                         /* error */
1823                         qla_printk(KERN_WARNING, ha,
1824                             "Memory Allocation failed - iodesc_pd\n");
1825
1826                         qla2x00_mem_free(ha);
1827                         msleep(100);
1828
1829                         continue;
1830                 }
1831                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1832
1833                 /* Allocate ioctl related memory. */
1834                 if (qla2x00_alloc_ioctl_mem(ha)) {
1835                         qla_printk(KERN_WARNING, ha,
1836                             "Memory Allocation failed - ioctl_mem\n");
1837
1838                         qla2x00_mem_free(ha);
1839                         msleep(100);
1840
1841                         continue;
1842                 }
1843
1844                 if (qla2x00_allocate_sp_pool(ha)) {
1845                         qla_printk(KERN_WARNING, ha,
1846                             "Memory Allocation failed - "
1847                             "qla2x00_allocate_sp_pool()\n");
1848
1849                         qla2x00_mem_free(ha);
1850                         msleep(100);
1851
1852                         continue;
1853                 }
1854
1855                 /* Allocate memory for SNS commands */
1856                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1857                         /* Get consistent memory allocated for SNS commands */
1858                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1859                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1860                             GFP_KERNEL);
1861                         if (ha->sns_cmd == NULL) {
1862                                 /* error */
1863                                 qla_printk(KERN_WARNING, ha,
1864                                     "Memory Allocation failed - sns_cmd\n");
1865
1866                                 qla2x00_mem_free(ha);
1867                                 msleep(100);
1868
1869                                 continue;
1870                         }
1871                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1872                 } else {
1873                         /* Get consistent memory allocated for MS IOCB */
1874                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1875                             &ha->ms_iocb_dma);
1876                         if (ha->ms_iocb == NULL) {
1877                                 /* error */
1878                                 qla_printk(KERN_WARNING, ha,
1879                                     "Memory Allocation failed - ms_iocb\n");
1880
1881                                 qla2x00_mem_free(ha);
1882                                 msleep(100);
1883
1884                                 continue;
1885                         }
1886                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1887
1888                         /*
1889                          * Get consistent memory allocated for CT SNS
1890                          * commands
1891                          */
1892                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1893                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1894                             GFP_KERNEL);
1895                         if (ha->ct_sns == NULL) {
1896                                 /* error */
1897                                 qla_printk(KERN_WARNING, ha,
1898                                     "Memory Allocation failed - ct_sns\n");
1899
1900                                 qla2x00_mem_free(ha);
1901                                 msleep(100);
1902
1903                                 continue;
1904                         }
1905                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1906                 }
1907
1908                 /* Done all allocations without any error. */
1909                 status = 0;
1910
1911         } while (retry-- && status != 0);
1912
1913         if (status) {
1914                 printk(KERN_WARNING
1915                         "%s(): **** FAILED ****\n", __func__);
1916         }
1917
1918         return(status);
1919 }
1920
1921 /*
1922 * qla2x00_mem_free
1923 *      Frees all adapter allocated memory.
1924 *
1925 * Input:
1926 *      ha = adapter block pointer.
1927 */
1928 static void
1929 qla2x00_mem_free(scsi_qla_host_t *ha)
1930 {
1931         struct list_head        *fcpl, *fcptemp;
1932         fc_port_t       *fcport;
1933         unsigned int    wtime;/* max wait time if mbx cmd is busy. */
1934
1935         if (ha == NULL) {
1936                 /* error */
1937                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1938                 return;
1939         }
1940
1941         /* Make sure all other threads are stopped. */
1942         wtime = 60 * 1000;
1943         while (ha->dpc_wait && wtime)
1944                 wtime = msleep_interruptible(wtime);
1945
1946         /* free ioctl memory */
1947         qla2x00_free_ioctl_mem(ha);
1948
1949         /* free sp pool */
1950         qla2x00_free_sp_pool(ha);
1951
1952         if (ha->sns_cmd)
1953                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1954                     ha->sns_cmd, ha->sns_cmd_dma);
1955
1956         if (ha->ct_sns)
1957                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1958                     ha->ct_sns, ha->ct_sns_dma);
1959
1960         if (ha->ms_iocb)
1961                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1962
1963         if (ha->iodesc_pd)
1964                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1965
1966         if (ha->init_cb)
1967                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
1968
1969         if (ha->s_dma_pool)
1970                 dma_pool_destroy(ha->s_dma_pool);
1971
1972         if (ha->rlc_rsp)
1973                 dma_free_coherent(&ha->pdev->dev,
1974                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
1975                     ha->rlc_rsp_dma);
1976
1977         if (ha->gid_list)
1978                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
1979                     ha->gid_list_dma);
1980
1981         if (ha->response_ring)
1982                 dma_free_coherent(&ha->pdev->dev,
1983                     (ha->response_q_length + 1) * sizeof(response_t),
1984                     ha->response_ring, ha->response_dma);
1985
1986         if (ha->request_ring)
1987                 dma_free_coherent(&ha->pdev->dev,
1988                     (ha->request_q_length + 1) * sizeof(request_t),
1989                     ha->request_ring, ha->request_dma);
1990
1991         ha->sns_cmd = NULL;
1992         ha->sns_cmd_dma = 0;
1993         ha->ct_sns = NULL;
1994         ha->ct_sns_dma = 0;
1995         ha->ms_iocb = NULL;
1996         ha->ms_iocb_dma = 0;
1997         ha->iodesc_pd = NULL;
1998         ha->iodesc_pd_dma = 0;
1999         ha->init_cb = NULL;
2000         ha->init_cb_dma = 0;
2001
2002         ha->s_dma_pool = NULL;
2003
2004         ha->rlc_rsp = NULL;
2005         ha->rlc_rsp_dma = 0;
2006         ha->gid_list = NULL;
2007         ha->gid_list_dma = 0;
2008
2009         ha->response_ring = NULL;
2010         ha->response_dma = 0;
2011         ha->request_ring = NULL;
2012         ha->request_dma = 0;
2013
2014         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2015                 fcport = list_entry(fcpl, fc_port_t, list);
2016
2017                 /* fc ports */
2018                 list_del_init(&fcport->list);
2019                 kfree(fcport);
2020         }
2021         INIT_LIST_HEAD(&ha->fcports);
2022
2023         if (ha->fw_dump)
2024                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2025
2026         vfree(ha->fw_dump24);
2027
2028         vfree(ha->fw_dump_buffer);
2029
2030         ha->fw_dump = NULL;
2031         ha->fw_dump24 = NULL;
2032         ha->fw_dumped = 0;
2033         ha->fw_dump_reading = 0;
2034         ha->fw_dump_buffer = NULL;
2035 }
2036
2037 /*
2038  * qla2x00_allocate_sp_pool
2039  *       This routine is called during initialization to allocate
2040  *       memory for local srb_t.
2041  *
2042  * Input:
2043  *       ha   = adapter block pointer.
2044  *
2045  * Context:
2046  *      Kernel context.
2047  *
2048  * Note: Sets the ref_count for non Null sp to one.
2049  */
2050 static int
2051 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2052 {
2053         int      rval;
2054
2055         rval = QLA_SUCCESS;
2056         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2057             mempool_free_slab, srb_cachep);
2058         if (ha->srb_mempool == NULL) {
2059                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2060                 rval = QLA_FUNCTION_FAILED;
2061         }
2062         return (rval);
2063 }
2064
2065 /*
2066  *  This routine frees all adapter allocated memory.
2067  *
2068  */
2069 static void
2070 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2071 {
2072         if (ha->srb_mempool) {
2073                 mempool_destroy(ha->srb_mempool);
2074                 ha->srb_mempool = NULL;
2075         }
2076 }
2077
2078 /**************************************************************************
2079 * qla2x00_do_dpc
2080 *   This kernel thread is a task that is schedule by the interrupt handler
2081 *   to perform the background processing for interrupts.
2082 *
2083 * Notes:
2084 * This task always run in the context of a kernel thread.  It
2085 * is kick-off by the driver's detect code and starts up
2086 * up one per adapter. It immediately goes to sleep and waits for
2087 * some fibre event.  When either the interrupt handler or
2088 * the timer routine detects a event it will one of the task
2089 * bits then wake us up.
2090 **************************************************************************/
2091 static int
2092 qla2x00_do_dpc(void *data)
2093 {
2094         DECLARE_MUTEX_LOCKED(sem);
2095         scsi_qla_host_t *ha;
2096         fc_port_t       *fcport;
2097         uint8_t         status;
2098         uint16_t        next_loopid;
2099
2100         ha = (scsi_qla_host_t *)data;
2101
2102         lock_kernel();
2103
2104         daemonize("%s_dpc", ha->host_str);
2105         allow_signal(SIGHUP);
2106
2107         ha->dpc_wait = &sem;
2108
2109         set_user_nice(current, -20);
2110
2111         unlock_kernel();
2112
2113         complete(&ha->dpc_inited);
2114
2115         while (1) {
2116                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2117
2118                 if (down_interruptible(&sem))
2119                         break;
2120
2121                 if (ha->dpc_should_die)
2122                         break;
2123
2124                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2125
2126                 /* Initialization not yet finished. Don't do anything yet. */
2127                 if (!ha->flags.init_done || ha->dpc_active)
2128                         continue;
2129
2130                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2131
2132                 ha->dpc_active = 1;
2133
2134                 if (ha->flags.mbox_busy) {
2135                         ha->dpc_active = 0;
2136                         continue;
2137                 }
2138
2139                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2140
2141                         DEBUG(printk("scsi(%ld): dpc: sched "
2142                             "qla2x00_abort_isp ha = %p\n",
2143                             ha->host_no, ha));
2144                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2145                             &ha->dpc_flags))) {
2146
2147                                 if (qla2x00_abort_isp(ha)) {
2148                                         /* failed. retry later */
2149                                         set_bit(ISP_ABORT_NEEDED,
2150                                             &ha->dpc_flags);
2151                                 }
2152                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2153                         }
2154                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2155                             ha->host_no));
2156                 }
2157
2158                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2159                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2160                             ha->host_no));
2161                         qla2x00_loop_reset(ha);
2162                 }
2163
2164                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2165                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2166
2167                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2168                             ha->host_no));
2169
2170                         qla2x00_rst_aen(ha);
2171                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2172                 }
2173
2174                 /* Retry each device up to login retry count */
2175                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2176                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2177                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2178
2179                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2180                             ha->host_no));
2181
2182                         next_loopid = 0;
2183                         list_for_each_entry(fcport, &ha->fcports, list) {
2184                                 if (fcport->port_type != FCT_TARGET)
2185                                         continue;
2186
2187                                 /*
2188                                  * If the port is not ONLINE then try to login
2189                                  * to it if we haven't run out of retries.
2190                                  */
2191                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2192                                     fcport->login_retry) {
2193
2194                                         fcport->login_retry--;
2195                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2196                                                 if (fcport->flags &
2197                                                     FCF_TAPE_PRESENT)
2198                                                         ha->isp_ops.fabric_logout(
2199                                                             ha, fcport->loop_id,
2200                                                             fcport->d_id.b.domain,
2201                                                             fcport->d_id.b.area,
2202                                                             fcport->d_id.b.al_pa);
2203                                                 status = qla2x00_fabric_login(
2204                                                     ha, fcport, &next_loopid);
2205                                         } else
2206                                                 status =
2207                                                     qla2x00_local_device_login(
2208                                                         ha, fcport->loop_id);
2209
2210                                         if (status == QLA_SUCCESS) {
2211                                                 fcport->old_loop_id = fcport->loop_id;
2212
2213                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2214                                                     ha->host_no, fcport->loop_id));
2215
2216                                                 fcport->port_login_retry_count =
2217                                                     ha->port_down_retry_count * PORT_RETRY_TIME;
2218                                                 atomic_set(&fcport->state, FCS_ONLINE);
2219                                                 atomic_set(&fcport->port_down_timer,
2220                                                     ha->port_down_retry_count * PORT_RETRY_TIME);
2221
2222                                                 fcport->login_retry = 0;
2223                                         } else if (status == 1) {
2224                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2225                                                 /* retry the login again */
2226                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2227                                                     ha->host_no,
2228                                                     fcport->login_retry, fcport->loop_id));
2229                                         } else {
2230                                                 fcport->login_retry = 0;
2231                                         }
2232                                 }
2233                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2234                                         break;
2235                         }
2236                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2237                             ha->host_no));
2238                 }
2239
2240                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2241                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2242
2243                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2244                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2245                             ha->host_no));
2246
2247                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2248
2249                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2250                             ha->host_no));
2251                 }
2252
2253                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2254
2255                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2256                             ha->host_no));
2257
2258                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2259                             &ha->dpc_flags))) {
2260
2261                                 qla2x00_loop_resync(ha);
2262
2263                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2264                         }
2265
2266                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2267                             ha->host_no));
2268                 }
2269
2270                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2271
2272                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2273                             ha->host_no));
2274
2275                         qla2x00_rescan_fcports(ha);
2276
2277                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2278                             "end.\n",
2279                             ha->host_no));
2280                 }
2281
2282                 if (!ha->interrupts_on)
2283                         ha->isp_ops.enable_intrs(ha);
2284
2285                 ha->dpc_active = 0;
2286         } /* End of while(1) */
2287
2288         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2289
2290         /*
2291          * Make sure that nobody tries to wake us up again.
2292          */
2293         ha->dpc_wait = NULL;
2294         ha->dpc_active = 0;
2295
2296         complete_and_exit(&ha->dpc_exited, 0);
2297 }
2298
2299 /*
2300 *  qla2x00_rst_aen
2301 *      Processes asynchronous reset.
2302 *
2303 * Input:
2304 *      ha  = adapter block pointer.
2305 */
2306 static void
2307 qla2x00_rst_aen(scsi_qla_host_t *ha)
2308 {
2309         if (ha->flags.online && !ha->flags.reset_active &&
2310             !atomic_read(&ha->loop_down_timer) &&
2311             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2312                 do {
2313                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2314
2315                         /*
2316                          * Issue marker command only when we are going to start
2317                          * the I/O.
2318                          */
2319                         ha->marker_needed = 1;
2320                 } while (!atomic_read(&ha->loop_down_timer) &&
2321                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2322         }
2323 }
2324
2325 static void
2326 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2327 {
2328         struct scsi_cmnd *cmd = sp->cmd;
2329
2330         if (sp->flags & SRB_DMA_VALID) {
2331                 if (cmd->use_sg) {
2332                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2333                             cmd->use_sg, cmd->sc_data_direction);
2334                 } else if (cmd->request_bufflen) {
2335                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2336                             cmd->request_bufflen, cmd->sc_data_direction);
2337                 }
2338                 sp->flags &= ~SRB_DMA_VALID;
2339         }
2340         CMD_SP(cmd) = NULL;
2341 }
2342
2343 void
2344 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2345 {
2346         struct scsi_cmnd *cmd = sp->cmd;
2347
2348         qla2x00_sp_free_dma(ha, sp);
2349
2350         mempool_free(sp, ha->srb_mempool);
2351
2352         cmd->scsi_done(cmd);
2353 }
2354
2355 /**************************************************************************
2356 *   qla2x00_timer
2357 *
2358 * Description:
2359 *   One second timer
2360 *
2361 * Context: Interrupt
2362 ***************************************************************************/
2363 static void
2364 qla2x00_timer(scsi_qla_host_t *ha)
2365 {
2366         unsigned long   cpu_flags = 0;
2367         fc_port_t       *fcport;
2368         int             start_dpc = 0;
2369         int             index;
2370         srb_t           *sp;
2371         int             t;
2372
2373         /*
2374          * Ports - Port down timer.
2375          *
2376          * Whenever, a port is in the LOST state we start decrementing its port
2377          * down timer every second until it reaches zero. Once  it reaches zero
2378          * the port it marked DEAD.
2379          */
2380         t = 0;
2381         list_for_each_entry(fcport, &ha->fcports, list) {
2382                 if (fcport->port_type != FCT_TARGET)
2383                         continue;
2384
2385                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2386
2387                         if (atomic_read(&fcport->port_down_timer) == 0)
2388                                 continue;
2389
2390                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2391                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2392
2393                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2394                             "%d remaining\n",
2395                             ha->host_no,
2396                             t, atomic_read(&fcport->port_down_timer)));
2397                 }
2398                 t++;
2399         } /* End of for fcport  */
2400
2401
2402         /* Loop down handler. */
2403         if (atomic_read(&ha->loop_down_timer) > 0 &&
2404             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2405
2406                 if (atomic_read(&ha->loop_down_timer) ==
2407                     ha->loop_down_abort_time) {
2408
2409                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2410                             "queues before time expire\n",
2411                             ha->host_no));
2412
2413                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2414                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2415
2416                         /* Schedule an ISP abort to return any tape commands. */
2417                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2418                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2419                             index++) {
2420                                 fc_port_t *sfcp;
2421
2422                                 sp = ha->outstanding_cmds[index];
2423                                 if (!sp)
2424                                         continue;
2425                                 sfcp = sp->fcport;
2426                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2427                                         continue;
2428
2429                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2430                                 break;
2431                         }
2432                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2433
2434                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2435                         start_dpc++;
2436                 }
2437
2438                 /* if the loop has been down for 4 minutes, reinit adapter */
2439                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2440                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2441                             "restarting queues.\n",
2442                             ha->host_no));
2443
2444                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2445                         start_dpc++;
2446
2447                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2448                                 DEBUG(printk("scsi(%ld): Loop down - "
2449                                     "aborting ISP.\n",
2450                                     ha->host_no));
2451                                 qla_printk(KERN_WARNING, ha,
2452                                     "Loop down - aborting ISP.\n");
2453
2454                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2455                         }
2456                 }
2457                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2458                     ha->host_no,
2459                     atomic_read(&ha->loop_down_timer)));
2460         }
2461
2462         /* Schedule the DPC routine if needed */
2463         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2464             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2465             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2466             start_dpc ||
2467             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2468             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2469             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2470             ha->dpc_wait && !ha->dpc_active) {
2471
2472                 up(ha->dpc_wait);
2473         }
2474
2475         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2476 }
2477
2478 /* XXX(hch): crude hack to emulate a down_timeout() */
2479 int
2480 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2481 {
2482         const unsigned int step = 100; /* msecs */
2483         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2484
2485         do {
2486                 if (!down_trylock(sema))
2487                         return 0;
2488                 if (msleep_interruptible(step))
2489                         break;
2490         } while (--iterations >= 0);
2491
2492         return -ETIMEDOUT;
2493 }
2494
2495 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2496
2497 #define qla2x00_release_firmware()      do { } while (0)
2498 #define qla2x00_pci_module_init()       (0)
2499 #define qla2x00_pci_module_exit()       do { } while (0)
2500
2501 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2502
2503 /* Firmware interface routines. */
2504
2505 #define FW_BLOBS        6
2506 #define FW_ISP21XX      0
2507 #define FW_ISP22XX      1
2508 #define FW_ISP2300      2
2509 #define FW_ISP2322      3
2510 #define FW_ISP63XX      4
2511 #define FW_ISP24XX      5
2512
2513 static DECLARE_MUTEX(qla_fw_lock);
2514
2515 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2516         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2517         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2518         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2519         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2520         { .name = "ql6312_fw.bin", .segs = { 0x800, 0 }, },
2521         { .name = "ql2400_fw.bin", },
2522 };
2523
2524 struct fw_blob *
2525 qla2x00_request_firmware(scsi_qla_host_t *ha)
2526 {
2527         struct fw_blob *blob;
2528
2529         blob = NULL;
2530         if (IS_QLA2100(ha)) {
2531                 blob = &qla_fw_blobs[FW_ISP21XX];
2532         } else if (IS_QLA2200(ha)) {
2533                 blob = &qla_fw_blobs[FW_ISP22XX];
2534         } else if (IS_QLA2300(ha) || IS_QLA2312(ha)) {
2535                 blob = &qla_fw_blobs[FW_ISP2300];
2536         } else if (IS_QLA2322(ha)) {
2537                 blob = &qla_fw_blobs[FW_ISP2322];
2538         } else if (IS_QLA6312(ha) || IS_QLA6322(ha)) {
2539                 blob = &qla_fw_blobs[FW_ISP63XX];
2540         } else if (IS_QLA24XX(ha)) {
2541                 blob = &qla_fw_blobs[FW_ISP24XX];
2542         }
2543
2544         down(&qla_fw_lock);
2545         if (blob->fw)
2546                 goto out;
2547
2548         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2549                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2550                     "(%s).\n", ha->host_no, blob->name));
2551                 blob->fw = NULL;
2552                 blob = NULL;
2553                 goto out;
2554         }
2555
2556 out:
2557         up(&qla_fw_lock);
2558         return blob;
2559 }
2560
2561 static void
2562 qla2x00_release_firmware(void)
2563 {
2564         int idx;
2565
2566         down(&qla_fw_lock);
2567         for (idx = 0; idx < FW_BLOBS; idx++)
2568                 if (qla_fw_blobs[idx].fw)
2569                         release_firmware(qla_fw_blobs[idx].fw);
2570         up(&qla_fw_lock);
2571 }
2572
2573 static struct qla_board_info qla_board_tbl = {
2574         .drv_name       = "qla2xxx",
2575 };
2576
2577 static struct pci_device_id qla2xxx_pci_tbl[] = {
2578         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2579                 PCI_ANY_ID, PCI_ANY_ID, },
2580         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2581                 PCI_ANY_ID, PCI_ANY_ID, },
2582         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2583                 PCI_ANY_ID, PCI_ANY_ID, },
2584         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2585                 PCI_ANY_ID, PCI_ANY_ID, },
2586         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2587                 PCI_ANY_ID, PCI_ANY_ID, },
2588         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2589                 PCI_ANY_ID, PCI_ANY_ID, },
2590         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2591                 PCI_ANY_ID, PCI_ANY_ID, },
2592         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2593                 PCI_ANY_ID, PCI_ANY_ID, },
2594         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2595                 PCI_ANY_ID, PCI_ANY_ID, },
2596         { 0 },
2597 };
2598 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2599
2600 static int __devinit
2601 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2602 {
2603         return qla2x00_probe_one(pdev, &qla_board_tbl);
2604 }
2605
2606 static void __devexit
2607 qla2xxx_remove_one(struct pci_dev *pdev)
2608 {
2609         qla2x00_remove_one(pdev);
2610 }
2611
2612 static struct pci_driver qla2xxx_pci_driver = {
2613         .name           = "qla2xxx",
2614         .driver         = {
2615                 .owner          = THIS_MODULE,
2616         },
2617         .id_table       = qla2xxx_pci_tbl,
2618         .probe          = qla2xxx_probe_one,
2619         .remove         = __devexit_p(qla2xxx_remove_one),
2620 };
2621
2622 static inline int
2623 qla2x00_pci_module_init(void)
2624 {
2625         return pci_module_init(&qla2xxx_pci_driver);
2626 }
2627
2628 static inline void
2629 qla2x00_pci_module_exit(void)
2630 {
2631         pci_unregister_driver(&qla2xxx_pci_driver);
2632 }
2633
2634 #endif
2635
2636 /**
2637  * qla2x00_module_init - Module initialization.
2638  **/
2639 static int __init
2640 qla2x00_module_init(void)
2641 {
2642         int ret = 0;
2643
2644         /* Allocate cache for SRBs. */
2645         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2646             SLAB_HWCACHE_ALIGN, NULL, NULL);
2647         if (srb_cachep == NULL) {
2648                 printk(KERN_ERR
2649                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2650                 return -ENOMEM;
2651         }
2652
2653         /* Derive version string. */
2654         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2655 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2656         strcat(qla2x00_version_str, "-fw");
2657 #endif
2658 #if DEBUG_QLA2100
2659         strcat(qla2x00_version_str, "-debug");
2660 #endif
2661         qla2xxx_transport_template =
2662             fc_attach_transport(&qla2xxx_transport_functions);
2663         if (!qla2xxx_transport_template)
2664                 return -ENODEV;
2665
2666         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2667         ret = qla2x00_pci_module_init();
2668         if (ret) {
2669                 kmem_cache_destroy(srb_cachep);
2670                 fc_release_transport(qla2xxx_transport_template);
2671         }
2672         return ret;
2673 }
2674
2675 /**
2676  * qla2x00_module_exit - Module cleanup.
2677  **/
2678 static void __exit
2679 qla2x00_module_exit(void)
2680 {
2681         qla2x00_pci_module_exit();
2682         qla2x00_release_firmware();
2683         kmem_cache_destroy(srb_cachep);
2684         fc_release_transport(qla2xxx_transport_template);
2685 }
2686
2687 module_init(qla2x00_module_init);
2688 module_exit(qla2x00_module_exit);
2689
2690 MODULE_AUTHOR("QLogic Corporation");
2691 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2692 MODULE_LICENSE("GPL");
2693 MODULE_VERSION(QLA2XXX_VERSION);