drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 #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         sp->ha = ha;
 338         sp->fcport = fcport;
 339         sp->cmd = cmd;
 340         sp->flags = 0;
 341         CMD_SP(cmd) = (void *)sp;
 342         cmd->scsi_done = done;
 343
 344         return sp;
 345 }
 346
 347 static int
 348 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 349 {
 350         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 351         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 352         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 353         srb_t *sp;
 354         int rval;
 355
 356         rval = fc_remote_port_chkready(rport);
 357         if (rval) {
 358                 cmd->result = rval;
 359                 goto qc_fail_command;
 360         }
 361
 362         /* Close window on fcport/rport state-transitioning. */
 363         if (!*(fc_port_t **)rport->dd_data) {
 364                 cmd->result = DID_IMM_RETRY << 16;
 365                 goto qc_fail_command;
 366         }
 367
 368         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 369                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 370                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 371                         cmd->result = DID_NO_CONNECT << 16;
 372                         goto qc_fail_command;
 373                 }
 374                 goto qc_host_busy;
 375         }
 376
 377         spin_unlock_irq(ha->host->host_lock);
 378
 379         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 380         if (!sp)
 381                 goto qc_host_busy_lock;
 382
 383         rval = qla2x00_start_scsi(sp);
 384         if (rval != QLA_SUCCESS)
 385                 goto qc_host_busy_free_sp;
 386
 387         spin_lock_irq(ha->host->host_lock);
 388
 389         return 0;
 390
 391 qc_host_busy_free_sp:
 392         qla2x00_sp_free_dma(ha, sp);
 393         mempool_free(sp, ha->srb_mempool);
 394
 395 qc_host_busy_lock:
 396         spin_lock_irq(ha->host->host_lock);
 397
 398 qc_host_busy:
 399         return SCSI_MLQUEUE_HOST_BUSY;
 400
 401 qc_fail_command:
 402         done(cmd);
 403
 404         return 0;
 405 }
 406
 407
 408 static int
 409 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 410 {
 411         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 412         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 413         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 414         srb_t *sp;
 415         int rval;
 416
 417         rval = fc_remote_port_chkready(rport);
 418         if (rval) {
 419                 cmd->result = rval;
 420                 goto qc24_fail_command;
 421         }
 422
 423         /* Close window on fcport/rport state-transitioning. */
 424         if (!*(fc_port_t **)rport->dd_data) {
 425                 cmd->result = DID_IMM_RETRY << 16;
 426                 goto qc24_fail_command;
 427         }
 428
 429         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 430                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 431                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 432                         cmd->result = DID_NO_CONNECT << 16;
 433                         goto qc24_fail_command;
 434                 }
 435                 goto qc24_host_busy;
 436         }
 437
 438         spin_unlock_irq(ha->host->host_lock);
 439
 440         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 441         if (!sp)
 442                 goto qc24_host_busy_lock;
 443
 444         rval = qla24xx_start_scsi(sp);
 445         if (rval != QLA_SUCCESS)
 446                 goto qc24_host_busy_free_sp;
 447
 448         spin_lock_irq(ha->host->host_lock);
 449
 450         return 0;
 451
 452 qc24_host_busy_free_sp:
 453         qla2x00_sp_free_dma(ha, sp);
 454         mempool_free(sp, ha->srb_mempool);
 455
 456 qc24_host_busy_lock:
 457         spin_lock_irq(ha->host->host_lock);
 458
 459 qc24_host_busy:
 460         return SCSI_MLQUEUE_HOST_BUSY;
 461
 462 qc24_fail_command:
 463         done(cmd);
 464
 465         return 0;
 466 }
 467
 468
 469 /*
 470  * qla2x00_eh_wait_on_command
 471  *    Waits for the command to be returned by the Firmware for some
 472  *    max time.
 473  *
 474  * Input:
 475  *    ha = actual ha whose done queue will contain the command
 476  *            returned by firmware.
 477  *    cmd = Scsi Command to wait on.
 478  *    flag = Abort/Reset(Bus or Device Reset)
 479  *
 480  * Return:
 481  *    Not Found : 0
 482  *    Found : 1
 483  */
 484 static int
 485 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 486 {
 487 #define ABORT_POLLING_PERIOD    1000
 488 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 489         unsigned long wait_iter = ABORT_WAIT_ITER;
 490         int ret = QLA_SUCCESS;
 491
 492         while (CMD_SP(cmd)) {
 493                 msleep(ABORT_POLLING_PERIOD);
 494
 495                 if (--wait_iter)
 496                         break;
 497         }
 498         if (CMD_SP(cmd))
 499                 ret = QLA_FUNCTION_FAILED;
 500
 501         return ret;
 502 }
 503
 504 /*
 505  * qla2x00_wait_for_hba_online
 506  *    Wait till the HBA is online after going through
 507  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 508  *    finally HBA is disabled ie marked offline
 509  *
 510  * Input:
 511  *     ha - pointer to host adapter structure
 512  *
 513  * Note:
 514  *    Does context switching-Release SPIN_LOCK
 515  *    (if any) before calling this routine.
 516  *
 517  * Return:
 518  *    Success (Adapter is online) : 0
 519  *    Failed  (Adapter is offline/disabled) : 1
 520  */
 521 int
 522 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 523 {
 524         int             return_status;
 525         unsigned long   wait_online;
 526
 527         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 528         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 529             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 530             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 531             ha->dpc_active) && time_before(jiffies, wait_online)) {
 532
 533                 msleep(1000);
 534         }
 535         if (ha->flags.online)
 536                 return_status = QLA_SUCCESS;
 537         else
 538                 return_status = QLA_FUNCTION_FAILED;
 539
 540         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 541
 542         return (return_status);
 543 }
 544
 545 /*
 546  * qla2x00_wait_for_loop_ready
 547  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 548  *    to be in LOOP_READY state.
 549  * Input:
 550  *     ha - pointer to host adapter structure
 551  *
 552  * Note:
 553  *    Does context switching-Release SPIN_LOCK
 554  *    (if any) before calling this routine.
 555  *
 556  *
 557  * Return:
 558  *    Success (LOOP_READY) : 0
 559  *    Failed  (LOOP_NOT_READY) : 1
 560  */
 561 static inline int
 562 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 563 {
 564         int      return_status = QLA_SUCCESS;
 565         unsigned long loop_timeout ;
 566
 567         /* wait for 5 min at the max for loop to be ready */
 568         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 569
 570         while ((!atomic_read(&ha->loop_down_timer) &&
 571             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 572             atomic_read(&ha->loop_state) != LOOP_READY) {
 573                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 574                         return_status = QLA_FUNCTION_FAILED;
 575                         break;
 576                 }
 577                 msleep(1000);
 578                 if (time_after_eq(jiffies, loop_timeout)) {
 579                         return_status = QLA_FUNCTION_FAILED;
 580                         break;
 581                 }
 582         }
 583         return (return_status);
 584 }
 585
 586 /**************************************************************************
 587 * qla2xxx_eh_abort
 588 *
 589 * Description:
 590 *    The abort function will abort the specified command.
 591 *
 592 * Input:
 593 *    cmd = Linux SCSI command packet to be aborted.
 594 *
 595 * Returns:
 596 *    Either SUCCESS or FAILED.
 597 *
 598 * Note:
 599 **************************************************************************/
 600 int
 601 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 602 {
 603         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 604         srb_t *sp;
 605         int ret, i;
 606         unsigned int id, lun;
 607         unsigned long serial;
 608         unsigned long flags;
 609
 610         if (!CMD_SP(cmd))
 611                 return FAILED;
 612
 613         ret = FAILED;
 614
 615         id = cmd->device->id;
 616         lun = cmd->device->lun;
 617         serial = cmd->serial_number;
 618
 619         /* Check active list for command command. */
 620         spin_lock_irqsave(&ha->hardware_lock, flags);
 621         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 622                 sp = ha->outstanding_cmds[i];
 623
 624                 if (sp == NULL)
 625                         continue;
 626
 627                 if (sp->cmd != cmd)
 628                         continue;
 629
 630                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 631                     __func__, ha->host_no, sp, serial));
 632                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 633
 634                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 635                 if (ha->isp_ops.abort_command(ha, sp)) {
 636                         DEBUG2(printk("%s(%ld): abort_command "
 637                             "mbx failed.\n", __func__, ha->host_no));
 638                 } else {
 639                         DEBUG3(printk("%s(%ld): abort_command "
 640                             "mbx success.\n", __func__, ha->host_no));
 641                         ret = SUCCESS;
 642                 }
 643                 spin_lock_irqsave(&ha->hardware_lock, flags);
 644
 645                 break;
 646         }
 647         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 648
 649         /* Wait for the command to be returned. */
 650         if (ret == SUCCESS) {
 651                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 652                         qla_printk(KERN_ERR, ha,
 653                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 654                             "%x.\n", ha->host_no, id, lun, serial, ret);
 655                 }
 656         }
 657
 658         qla_printk(KERN_INFO, ha,
 659             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 660             id, lun, serial, ret);
 661
 662         return ret;
 663 }
 664
 665 /**************************************************************************
 666 * qla2x00_eh_wait_for_pending_target_commands
 667 *
 668 * Description:
 669 *    Waits for all the commands to come back from the specified target.
 670 *
 671 * Input:
 672 *    ha - pointer to scsi_qla_host structure.
 673 *    t  - target
 674 * Returns:
 675 *    Either SUCCESS or FAILED.
 676 *
 677 * Note:
 678 **************************************************************************/
 679 static int
 680 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 681 {
 682         int     cnt;
 683         int     status;
 684         srb_t           *sp;
 685         struct scsi_cmnd *cmd;
 686         unsigned long flags;
 687
 688         status = 0;
 689
 690         /*
 691          * Waiting for all commands for the designated target in the active
 692          * array
 693          */
 694         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 695                 spin_lock_irqsave(&ha->hardware_lock, flags);
 696                 sp = ha->outstanding_cmds[cnt];
 697                 if (sp) {
 698                         cmd = sp->cmd;
 699                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 700                         if (cmd->device->id == t) {
 701                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 702                                         status = 1;
 703                                         break;
 704                                 }
 705                         }
 706                 } else {
 707                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 708                 }
 709         }
 710         return (status);
 711 }
 712
 713
 714 /**************************************************************************
 715 * qla2xxx_eh_device_reset
 716 *
 717 * Description:
 718 *    The device reset function will reset the target and abort any
 719 *    executing commands.
 720 *
 721 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 722 *          attempt to use this value, even if you determine it is
 723 *          non-null.
 724 *
 725 * Input:
 726 *    cmd = Linux SCSI command packet of the command that cause the
 727 *          bus device reset.
 728 *
 729 * Returns:
 730 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 731 *
 732 **************************************************************************/
 733 int
 734 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 735 {
 736         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 737         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 738         srb_t *sp;
 739         int ret;
 740         unsigned int id, lun;
 741         unsigned long serial;
 742
 743         ret = FAILED;
 744
 745         id = cmd->device->id;
 746         lun = cmd->device->lun;
 747         serial = cmd->serial_number;
 748
 749         sp = (srb_t *) CMD_SP(cmd);
 750         if (!sp || !fcport)
 751                 return ret;
 752
 753         qla_printk(KERN_INFO, ha,
 754             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 755
 756         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 757                 goto eh_dev_reset_done;
 758
 759         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 760                 if (qla2x00_device_reset(ha, fcport) == 0)
 761                         ret = SUCCESS;
 762
 763 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 764                 if (ret == SUCCESS) {
 765                         if (fcport->flags & FC_FABRIC_DEVICE) {
 766                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 767                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 768                         }
 769                 }
 770 #endif
 771         } else {
 772                 DEBUG2(printk(KERN_INFO
 773                     "%s failed: loop not ready\n",__func__);)
 774         }
 775
 776         if (ret == FAILED) {
 777                 DEBUG3(printk("%s(%ld): device reset failed\n",
 778                     __func__, ha->host_no));
 779                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 780                     __func__);
 781
 782                 goto eh_dev_reset_done;
 783         }
 784
 785         /* Flush outstanding commands. */
 786         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 787                 ret = FAILED;
 788         if (ret == FAILED) {
 789                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 790                     __func__, ha->host_no));
 791                 qla_printk(KERN_INFO, ha,
 792                     "%s: failed while waiting for commands\n", __func__);
 793         } else
 794                 qla_printk(KERN_INFO, ha,
 795                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 796                     id, lun);
 797  eh_dev_reset_done:
 798         return ret;
 799 }
 800
 801 /**************************************************************************
 802 * qla2x00_eh_wait_for_pending_commands
 803 *
 804 * Description:
 805 *    Waits for all the commands to come back from the specified host.
 806 *
 807 * Input:
 808 *    ha - pointer to scsi_qla_host structure.
 809 *
 810 * Returns:
 811 *    1 : SUCCESS
 812 *    0 : FAILED
 813 *
 814 * Note:
 815 **************************************************************************/
 816 static int
 817 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 818 {
 819         int     cnt;
 820         int     status;
 821         srb_t           *sp;
 822         struct scsi_cmnd *cmd;
 823         unsigned long flags;
 824
 825         status = 1;
 826
 827         /*
 828          * Waiting for all commands for the designated target in the active
 829          * array
 830          */
 831         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 832                 spin_lock_irqsave(&ha->hardware_lock, flags);
 833                 sp = ha->outstanding_cmds[cnt];
 834                 if (sp) {
 835                         cmd = sp->cmd;
 836                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 837                         status = qla2x00_eh_wait_on_command(ha, cmd);
 838                         if (status == 0)
 839                                 break;
 840                 }
 841                 else {
 842                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 843                 }
 844         }
 845         return (status);
 846 }
 847
 848
 849 /**************************************************************************
 850 * qla2xxx_eh_bus_reset
 851 *
 852 * Description:
 853 *    The bus reset function will reset the bus and abort any executing
 854 *    commands.
 855 *
 856 * Input:
 857 *    cmd = Linux SCSI command packet of the command that cause the
 858 *          bus reset.
 859 *
 860 * Returns:
 861 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 862 *
 863 **************************************************************************/
 864 int
 865 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 866 {
 867         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 868         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 869         srb_t *sp;
 870         int ret;
 871         unsigned int id, lun;
 872         unsigned long serial;
 873
 874         ret = FAILED;
 875
 876         id = cmd->device->id;
 877         lun = cmd->device->lun;
 878         serial = cmd->serial_number;
 879
 880         sp = (srb_t *) CMD_SP(cmd);
 881         if (!sp || !fcport)
 882                 return ret;
 883
 884         qla_printk(KERN_INFO, ha,
 885             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 886
 887         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 888                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 889                 goto eh_bus_reset_done;
 890         }
 891
 892         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 893                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 894                         ret = SUCCESS;
 895         }
 896         if (ret == FAILED)
 897                 goto eh_bus_reset_done;
 898
 899         /* Flush outstanding commands. */
 900         if (!qla2x00_eh_wait_for_pending_commands(ha))
 901                 ret = FAILED;
 902
 903 eh_bus_reset_done:
 904         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 905             (ret == FAILED) ? "failed" : "succeded");
 906
 907         return ret;
 908 }
 909
 910 /**************************************************************************
 911 * qla2xxx_eh_host_reset
 912 *
 913 * Description:
 914 *    The reset function will reset the Adapter.
 915 *
 916 * Input:
 917 *      cmd = Linux SCSI command packet of the command that cause the
 918 *            adapter reset.
 919 *
 920 * Returns:
 921 *      Either SUCCESS or FAILED.
 922 *
 923 * Note:
 924 **************************************************************************/
 925 int
 926 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 927 {
 928         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 929         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 930         srb_t *sp;
 931         int ret;
 932         unsigned int id, lun;
 933         unsigned long serial;
 934
 935         ret = FAILED;
 936
 937         id = cmd->device->id;
 938         lun = cmd->device->lun;
 939         serial = cmd->serial_number;
 940
 941         sp = (srb_t *) CMD_SP(cmd);
 942         if (!sp || !fcport)
 943                 return ret;
 944
 945         qla_printk(KERN_INFO, ha,
 946             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 947
 948         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 949                 goto eh_host_reset_lock;
 950
 951         /*
 952          * Fixme-may be dpc thread is active and processing
 953          * loop_resync,so wait a while for it to
 954          * be completed and then issue big hammer.Otherwise
 955          * it may cause I/O failure as big hammer marks the
 956          * devices as lost kicking of the port_down_timer
 957          * while dpc is stuck for the mailbox to complete.
 958          */
 959         qla2x00_wait_for_loop_ready(ha);
 960         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 961         if (qla2x00_abort_isp(ha)) {
 962                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 963                 /* failed. schedule dpc to try */
 964                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 965
 966                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 967                         goto eh_host_reset_lock;
 968         }
 969         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 970
 971         /* Waiting for our command in done_queue to be returned to OS.*/
 972         if (qla2x00_eh_wait_for_pending_commands(ha))
 973                 ret = SUCCESS;
 974
 975 eh_host_reset_lock:
 976         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 977             (ret == FAILED) ? "failed" : "succeded");
 978
 979         return ret;
 980 }
 981
 982 /*
 983 * qla2x00_loop_reset
 984 *      Issue loop reset.
 985 *
 986 * Input:
 987 *      ha = adapter block pointer.
 988 *
 989 * Returns:
 990 *      0 = success
 991 */
 992 static int
 993 qla2x00_loop_reset(scsi_qla_host_t *ha)
 994 {
 995         int status = QLA_SUCCESS;
 996         struct fc_port *fcport;
 997
 998         if (ha->flags.enable_lip_reset) {
 999                 status = qla2x00_lip_reset(ha);
1000         }
1001
1002         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1003                 list_for_each_entry(fcport, &ha->fcports, list) {
1004                         if (fcport->port_type != FCT_TARGET)
1005                                 continue;
1006
1007                         status = qla2x00_device_reset(ha, fcport);
1008                         if (status != QLA_SUCCESS)
1009                                 break;
1010                 }
1011         }
1012
1013         if (status == QLA_SUCCESS &&
1014                 ((!ha->flags.enable_target_reset &&
1015                   !ha->flags.enable_lip_reset) ||
1016                 ha->flags.enable_lip_full_login)) {
1017
1018                 status = qla2x00_full_login_lip(ha);
1019         }
1020
1021         /* Issue marker command only when we are going to start the I/O */
1022         ha->marker_needed = 1;
1023
1024         if (status) {
1025                 /* Empty */
1026                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1027                                 __func__,
1028                                 ha->host_no);)
1029         } else {
1030                 /* Empty */
1031                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1032                                 __func__,
1033                                 ha->host_no);)
1034         }
1035
1036         return(status);
1037 }
1038
1039 /*
1040  * qla2x00_device_reset
1041  *      Issue bus device reset message to the target.
1042  *
1043  * Input:
1044  *      ha = adapter block pointer.
1045  *      t = SCSI ID.
1046  *      TARGET_QUEUE_LOCK must be released.
1047  *      ADAPTER_STATE_LOCK must be released.
1048  *
1049  * Context:
1050  *      Kernel context.
1051  */
1052 static int
1053 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1054 {
1055         /* Abort Target command will clear Reservation */
1056         return ha->isp_ops.abort_target(reset_fcport);
1057 }
1058
1059 static int
1060 qla2xxx_slave_alloc(struct scsi_device *sdev)
1061 {
1062         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1063
1064         if (!rport || fc_remote_port_chkready(rport))
1065                 return -ENXIO;
1066
1067         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1068
1069         return 0;
1070 }
1071
1072 static int
1073 qla2xxx_slave_configure(struct scsi_device *sdev)
1074 {
1075         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1076         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1077
1078         if (sdev->tagged_supported)
1079                 scsi_activate_tcq(sdev, 32);
1080         else
1081                 scsi_deactivate_tcq(sdev, 32);
1082
1083         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1084
1085         return 0;
1086 }
1087
1088 static void
1089 qla2xxx_slave_destroy(struct scsi_device *sdev)
1090 {
1091         sdev->hostdata = NULL;
1092 }
1093
1094 static int
1095 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1096 {
1097         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1098         return sdev->queue_depth;
1099 }
1100
1101 static int
1102 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1103 {
1104         if (sdev->tagged_supported) {
1105                 scsi_set_tag_type(sdev, tag_type);
1106                 if (tag_type)
1107                         scsi_activate_tcq(sdev, sdev->queue_depth);
1108                 else
1109                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1110         } else
1111                 tag_type = 0;
1112
1113         return tag_type;
1114 }
1115
1116 /**
1117  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1118  * @ha: HA context
1119  *
1120  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1121  * supported addressing method.
1122  */
1123 static void
1124 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1125 {
1126         /* Assume a 32bit DMA mask. */
1127         ha->flags.enable_64bit_addressing = 0;
1128
1129         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1130                 /* Any upper-dword bits set? */
1131                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1132                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1133                         /* Ok, a 64bit DMA mask is applicable. */
1134                         ha->flags.enable_64bit_addressing = 1;
1135                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1136                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1137                         return;
1138                 }
1139         }
1140
1141         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1142         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1143 }
1144
1145 static inline void
1146 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1147 {
1148         ha->device_type = DT_EXTENDED_IDS;
1149         switch (ha->pdev->device) {
1150         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1151                 ha->device_type |= DT_ISP2100;
1152                 ha->device_type &= ~DT_EXTENDED_IDS;
1153                 break;
1154         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1155                 ha->device_type |= DT_ISP2200;
1156                 ha->device_type &= ~DT_EXTENDED_IDS;
1157                 break;
1158         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1159                 ha->device_type |= DT_ISP2300;
1160                 ha->device_type |= DT_ZIO_SUPPORTED;
1161                 break;
1162         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1163                 ha->device_type |= DT_ISP2312;
1164                 ha->device_type |= DT_ZIO_SUPPORTED;
1165                 break;
1166         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1167                 ha->device_type |= DT_ISP2322;
1168                 ha->device_type |= DT_ZIO_SUPPORTED;
1169                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1170                     ha->pdev->subsystem_device == 0x0170)
1171                         ha->device_type |= DT_OEM_001;
1172                 break;
1173         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1174                 ha->device_type |= DT_ISP6312;
1175                 break;
1176         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1177                 ha->device_type |= DT_ISP6322;
1178                 break;
1179         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1180                 ha->device_type |= DT_ISP2422;
1181                 ha->device_type |= DT_ZIO_SUPPORTED;
1182                 break;
1183         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1184                 ha->device_type |= DT_ISP2432;
1185                 ha->device_type |= DT_ZIO_SUPPORTED;
1186                 break;
1187         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1188                 ha->device_type |= DT_ISP5422;
1189                 break;
1190         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1191                 ha->device_type |= DT_ISP5432;
1192                 break;
1193         }
1194 }
1195
1196 static int
1197 qla2x00_iospace_config(scsi_qla_host_t *ha)
1198 {
1199         unsigned long   pio, pio_len, pio_flags;
1200         unsigned long   mmio, mmio_len, mmio_flags;
1201
1202         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1203         pio = pci_resource_start(ha->pdev, 0);
1204         pio_len = pci_resource_len(ha->pdev, 0);
1205         pio_flags = pci_resource_flags(ha->pdev, 0);
1206         if (pio_flags & IORESOURCE_IO) {
1207                 if (pio_len < MIN_IOBASE_LEN) {
1208                         qla_printk(KERN_WARNING, ha,
1209                             "Invalid PCI I/O region size (%s)...\n",
1210                                 pci_name(ha->pdev));
1211                         pio = 0;
1212                 }
1213         } else {
1214                 qla_printk(KERN_WARNING, ha,
1215                     "region #0 not a PIO resource (%s)...\n",
1216                     pci_name(ha->pdev));
1217                 pio = 0;
1218         }
1219
1220         /* Use MMIO operations for all accesses. */
1221         mmio = pci_resource_start(ha->pdev, 1);
1222         mmio_len = pci_resource_len(ha->pdev, 1);
1223         mmio_flags = pci_resource_flags(ha->pdev, 1);
1224
1225         if (!(mmio_flags & IORESOURCE_MEM)) {
1226                 qla_printk(KERN_ERR, ha,
1227                     "region #0 not an MMIO resource (%s), aborting\n",
1228                     pci_name(ha->pdev));
1229                 goto iospace_error_exit;
1230         }
1231         if (mmio_len < MIN_IOBASE_LEN) {
1232                 qla_printk(KERN_ERR, ha,
1233                     "Invalid PCI mem region size (%s), aborting\n",
1234                         pci_name(ha->pdev));
1235                 goto iospace_error_exit;
1236         }
1237
1238         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1239                 qla_printk(KERN_WARNING, ha,
1240                     "Failed to reserve PIO/MMIO regions (%s)\n",
1241                     pci_name(ha->pdev));
1242
1243                 goto iospace_error_exit;
1244         }
1245
1246         ha->pio_address = pio;
1247         ha->pio_length = pio_len;
1248         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1249         if (!ha->iobase) {
1250                 qla_printk(KERN_ERR, ha,
1251                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1252
1253                 goto iospace_error_exit;
1254         }
1255
1256         return (0);
1257
1258 iospace_error_exit:
1259         return (-ENOMEM);
1260 }
1261
1262 static void
1263 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1264 {
1265         unsigned long flags = 0;
1266         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1267
1268         spin_lock_irqsave(&ha->hardware_lock, flags);
1269         ha->interrupts_on = 1;
1270         /* enable risc and host interrupts */
1271         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1272         RD_REG_WORD(&reg->ictrl);
1273         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1274
1275 }
1276
1277 static void
1278 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1279 {
1280         unsigned long flags = 0;
1281         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1282
1283         spin_lock_irqsave(&ha->hardware_lock, flags);
1284         ha->interrupts_on = 0;
1285         /* disable risc and host interrupts */
1286         WRT_REG_WORD(&reg->ictrl, 0);
1287         RD_REG_WORD(&reg->ictrl);
1288         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1289 }
1290
1291 static void
1292 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1293 {
1294         unsigned long flags = 0;
1295         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1296
1297         spin_lock_irqsave(&ha->hardware_lock, flags);
1298         ha->interrupts_on = 1;
1299         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1300         RD_REG_DWORD(&reg->ictrl);
1301         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1302 }
1303
1304 static void
1305 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1306 {
1307         unsigned long flags = 0;
1308         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1309
1310         spin_lock_irqsave(&ha->hardware_lock, flags);
1311         ha->interrupts_on = 0;
1312         WRT_REG_DWORD(&reg->ictrl, 0);
1313         RD_REG_DWORD(&reg->ictrl);
1314         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1315 }
1316
1317 /*
1318  * PCI driver interface
1319  */
1320 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1321 {
1322         int     ret = -ENODEV;
1323         device_reg_t __iomem *reg;
1324         struct Scsi_Host *host;
1325         scsi_qla_host_t *ha;
1326         unsigned long   flags = 0;
1327         unsigned long   wait_switch = 0;
1328         char pci_info[20];
1329         char fw_str[30];
1330         fc_port_t *fcport;
1331         struct scsi_host_template *sht;
1332
1333         if (pci_enable_device(pdev))
1334                 goto probe_out;
1335
1336         sht = &qla2x00_driver_template;
1337         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1338             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1339                 sht = &qla24xx_driver_template;
1340         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1341         if (host == NULL) {
1342                 printk(KERN_WARNING
1343                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1344                 goto probe_disable_device;
1345         }
1346
1347         /* Clear our data area */
1348         ha = (scsi_qla_host_t *)host->hostdata;
1349         memset(ha, 0, sizeof(scsi_qla_host_t));
1350
1351         ha->pdev = pdev;
1352         ha->host = host;
1353         ha->host_no = host->host_no;
1354         ha->brd_info = brd_info;
1355         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1356
1357         /* Set ISP-type information. */
1358         qla2x00_set_isp_flags(ha);
1359
1360         /* Configure PCI I/O space */
1361         ret = qla2x00_iospace_config(ha);
1362         if (ret)
1363                 goto probe_failed;
1364
1365         qla_printk(KERN_INFO, ha,
1366             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1367             ha->iobase);
1368
1369         spin_lock_init(&ha->hardware_lock);
1370
1371         ha->prev_topology = 0;
1372         ha->init_cb_size = sizeof(init_cb_t);
1373         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1374         ha->link_data_rate = LDR_UNKNOWN;
1375         ha->optrom_size = OPTROM_SIZE_2300;
1376
1377         /* Assign ISP specific operations. */
1378         ha->isp_ops.pci_config          = qla2100_pci_config;
1379         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1380         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1381         ha->isp_ops.config_rings        = qla2x00_config_rings;
1382         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1383         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1384         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1385         ha->isp_ops.load_risc           = qla2x00_load_risc;
1386         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1387         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1388         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1389         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1390         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1391         ha->isp_ops.abort_command       = qla2x00_abort_command;
1392         ha->isp_ops.abort_target        = qla2x00_abort_target;
1393         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1394         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1395         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1396         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1397         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1398         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1399         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1400         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1401         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1402         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1403         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1404         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1405         if (IS_QLA2100(ha)) {
1406                 host->max_id = MAX_TARGETS_2100;
1407                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1408                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1409                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1410                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1411                 host->sg_tablesize = 32;
1412                 ha->gid_list_info_size = 4;
1413         } else if (IS_QLA2200(ha)) {
1414                 host->max_id = MAX_TARGETS_2200;
1415                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1416                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1417                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1418                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1419                 ha->gid_list_info_size = 4;
1420         } else if (IS_QLA23XX(ha)) {
1421                 host->max_id = MAX_TARGETS_2200;
1422                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1423                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1424                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1425                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1426                 ha->isp_ops.pci_config = qla2300_pci_config;
1427                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1428                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1429                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1430                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1431                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1432                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1433                 ha->gid_list_info_size = 6;
1434                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1435                         ha->optrom_size = OPTROM_SIZE_2322;
1436         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1437                 host->max_id = MAX_TARGETS_2200;
1438                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1439                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1440                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1441                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1442                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1443                 ha->mgmt_svr_loop_id = 10;
1444                 ha->isp_ops.pci_config = qla24xx_pci_config;
1445                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1446                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1447                 ha->isp_ops.config_rings = qla24xx_config_rings;
1448                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1449                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1450                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1451                 ha->isp_ops.load_risc = qla24xx_load_risc;
1452 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1453                 if (ql2xfwloadflash)
1454                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1455 #endif
1456                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1457                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1458                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1459                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1460                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1461                 ha->isp_ops.abort_command = qla24xx_abort_command;
1462                 ha->isp_ops.abort_target = qla24xx_abort_target;
1463                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1464                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1465                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1466                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1467                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1468                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1469                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1470                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1471                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1472                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1473                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1474                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1475                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1476                 ha->gid_list_info_size = 8;
1477                 ha->optrom_size = OPTROM_SIZE_24XX;
1478         }
1479         host->can_queue = ha->request_q_length + 128;
1480
1481         /* load the F/W, read paramaters, and init the H/W */
1482         ha->instance = num_hosts;
1483
1484         init_MUTEX(&ha->mbx_cmd_sem);
1485         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1486
1487         INIT_LIST_HEAD(&ha->list);
1488         INIT_LIST_HEAD(&ha->fcports);
1489
1490         /*
1491          * These locks are used to prevent more than one CPU
1492          * from modifying the queue at the same time. The
1493          * higher level "host_lock" will reduce most
1494          * contention for these locks.
1495          */
1496         spin_lock_init(&ha->mbx_reg_lock);
1497
1498         qla2x00_config_dma_addressing(ha);
1499         if (qla2x00_mem_alloc(ha)) {
1500                 qla_printk(KERN_WARNING, ha,
1501                     "[ERROR] Failed to allocate memory for adapter\n");
1502
1503                 ret = -ENOMEM;
1504                 goto probe_failed;
1505         }
1506
1507         if (qla2x00_initialize_adapter(ha) &&
1508             !(ha->device_flags & DFLG_NO_CABLE)) {
1509
1510                 qla_printk(KERN_WARNING, ha,
1511                     "Failed to initialize adapter\n");
1512
1513                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1514                     "Adapter flags %x.\n",
1515                     ha->host_no, ha->device_flags));
1516
1517                 ret = -ENODEV;
1518                 goto probe_failed;
1519         }
1520
1521         /*
1522          * Startup the kernel thread for this host adapter
1523          */
1524         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1525                         "%s_dpc", ha->host_str);
1526         if (IS_ERR(ha->dpc_thread)) {
1527                 qla_printk(KERN_WARNING, ha,
1528                     "Unable to start DPC thread!\n");
1529                 ret = PTR_ERR(ha->dpc_thread);
1530                 goto probe_failed;
1531         }
1532
1533         host->this_id = 255;
1534         host->cmd_per_lun = 3;
1535         host->unique_id = ha->instance;
1536         host->max_cmd_len = MAX_CMDSZ;
1537         host->max_channel = MAX_BUSES - 1;
1538         host->max_lun = MAX_LUNS;
1539         host->transportt = qla2xxx_transport_template;
1540
1541         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1542             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1543         if (ret) {
1544                 qla_printk(KERN_WARNING, ha,
1545                     "Failed to reserve interrupt %d already in use.\n",
1546                     pdev->irq);
1547                 goto probe_failed;
1548         }
1549         host->irq = pdev->irq;
1550
1551         /* Initialized the timer */
1552         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1553
1554         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1555             ha->host_no, ha));
1556
1557         ha->isp_ops.disable_intrs(ha);
1558
1559         spin_lock_irqsave(&ha->hardware_lock, flags);
1560         reg = ha->iobase;
1561         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1562                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1563                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1564         } else {
1565                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1566                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1567                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1568
1569                 /* Enable proper parity */
1570                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1571                         if (IS_QLA2300(ha))
1572                                 /* SRAM parity */
1573                                 WRT_REG_WORD(&reg->isp.hccr,
1574                                     (HCCR_ENABLE_PARITY + 0x1));
1575                         else
1576                                 /* SRAM, Instruction RAM and GP RAM parity */
1577                                 WRT_REG_WORD(&reg->isp.hccr,
1578                                     (HCCR_ENABLE_PARITY + 0x7));
1579                 }
1580         }
1581         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1582
1583         ha->isp_ops.enable_intrs(ha);
1584
1585         /* v2.19.5b6 */
1586         /*
1587          * Wait around max loop_reset_delay secs for the devices to come
1588          * on-line. We don't want Linux scanning before we are ready.
1589          *
1590          */
1591         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1592             time_before(jiffies,wait_switch) &&
1593              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1594              && (ha->device_flags & SWITCH_FOUND) ;) {
1595
1596                 qla2x00_check_fabric_devices(ha);
1597
1598                 msleep(10);
1599         }
1600
1601         pci_set_drvdata(pdev, ha);
1602         ha->flags.init_done = 1;
1603         num_hosts++;
1604
1605         ret = scsi_add_host(host, &pdev->dev);
1606         if (ret)
1607                 goto probe_failed;
1608
1609         qla2x00_alloc_sysfs_attr(ha);
1610
1611         qla2x00_init_host_attr(ha);
1612
1613         qla_printk(KERN_INFO, ha, "\n"
1614             " QLogic Fibre Channel HBA Driver: %s\n"
1615             "  QLogic %s - %s\n"
1616             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1617             qla2x00_version_str, ha->model_number,
1618             ha->model_desc ? ha->model_desc: "", pdev->device,
1619             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1620             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1621             ha->isp_ops.fw_version_str(ha, fw_str));
1622
1623         /* Go with fc_rport registration. */
1624         list_for_each_entry(fcport, &ha->fcports, list)
1625                 qla2x00_reg_remote_port(ha, fcport);
1626
1627         return 0;
1628
1629 probe_failed:
1630         qla2x00_free_device(ha);
1631
1632         scsi_host_put(host);
1633
1634 probe_disable_device:
1635         pci_disable_device(pdev);
1636
1637 probe_out:
1638         return ret;
1639 }
1640 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1641
1642 void qla2x00_remove_one(struct pci_dev *pdev)
1643 {
1644         scsi_qla_host_t *ha;
1645
1646         ha = pci_get_drvdata(pdev);
1647
1648         qla2x00_free_sysfs_attr(ha);
1649
1650         fc_remove_host(ha->host);
1651
1652         scsi_remove_host(ha->host);
1653
1654         qla2x00_free_device(ha);
1655
1656         scsi_host_put(ha->host);
1657
1658         pci_set_drvdata(pdev, NULL);
1659 }
1660 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1661
1662 static void
1663 qla2x00_free_device(scsi_qla_host_t *ha)
1664 {
1665         /* Disable timer */
1666         if (ha->timer_active)
1667                 qla2x00_stop_timer(ha);
1668
1669         /* Kill the kernel thread for this host */
1670         if (ha->dpc_thread) {
1671                 struct task_struct *t = ha->dpc_thread;
1672
1673                 /*
1674                  * qla2xxx_wake_dpc checks for ->dpc_thread
1675                  * so we need to zero it out.
1676                  */
1677                 ha->dpc_thread = NULL;
1678                 kthread_stop(t);
1679         }
1680
1681         /* Stop currently executing firmware. */
1682         qla2x00_stop_firmware(ha);
1683
1684         /* turn-off interrupts on the card */
1685         if (ha->interrupts_on)
1686                 ha->isp_ops.disable_intrs(ha);
1687
1688         qla2x00_mem_free(ha);
1689
1690         ha->flags.online = 0;
1691
1692         /* Detach interrupts */
1693         if (ha->pdev->irq)
1694                 free_irq(ha->pdev->irq, ha);
1695
1696         /* release io space registers  */
1697         if (ha->iobase)
1698                 iounmap(ha->iobase);
1699         pci_release_regions(ha->pdev);
1700
1701         pci_disable_device(ha->pdev);
1702 }
1703
1704 static inline void
1705 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1706     int defer)
1707 {
1708         unsigned long flags;
1709         struct fc_rport *rport;
1710
1711         if (!fcport->rport)
1712                 return;
1713
1714         rport = fcport->rport;
1715         if (defer) {
1716                 spin_lock_irqsave(&fcport->rport_lock, flags);
1717                 fcport->drport = rport;
1718                 fcport->rport = NULL;
1719                 *(fc_port_t **)rport->dd_data = NULL;
1720                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1721                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1722         } else {
1723                 spin_lock_irqsave(&fcport->rport_lock, flags);
1724                 fcport->rport = NULL;
1725                 *(fc_port_t **)rport->dd_data = NULL;
1726                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1727                 fc_remote_port_delete(rport);
1728         }
1729 }
1730
1731 /*
1732  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1733  *
1734  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1735  *
1736  * Return: None.
1737  *
1738  * Context:
1739  */
1740 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1741     int do_login, int defer)
1742 {
1743         if (atomic_read(&fcport->state) == FCS_ONLINE)
1744                 qla2x00_schedule_rport_del(ha, fcport, defer);
1745
1746         /*
1747          * We may need to retry the login, so don't change the state of the
1748          * port but do the retries.
1749          */
1750         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1751                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1752
1753         if (!do_login)
1754                 return;
1755
1756         if (fcport->login_retry == 0) {
1757                 fcport->login_retry = ha->login_retry_count;
1758                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1759
1760                 DEBUG(printk("scsi(%ld): Port login retry: "
1761                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1762                     "id = 0x%04x retry cnt=%d\n",
1763                     ha->host_no,
1764                     fcport->port_name[0],
1765                     fcport->port_name[1],
1766                     fcport->port_name[2],
1767                     fcport->port_name[3],
1768                     fcport->port_name[4],
1769                     fcport->port_name[5],
1770                     fcport->port_name[6],
1771                     fcport->port_name[7],
1772                     fcport->loop_id,
1773                     fcport->login_retry));
1774         }
1775 }
1776
1777 /*
1778  * qla2x00_mark_all_devices_lost
1779  *      Updates fcport state when device goes offline.
1780  *
1781  * Input:
1782  *      ha = adapter block pointer.
1783  *      fcport = port structure pointer.
1784  *
1785  * Return:
1786  *      None.
1787  *
1788  * Context:
1789  */
1790 void
1791 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1792 {
1793         fc_port_t *fcport;
1794
1795         list_for_each_entry(fcport, &ha->fcports, list) {
1796                 if (fcport->port_type != FCT_TARGET)
1797                         continue;
1798
1799                 /*
1800                  * No point in marking the device as lost, if the device is
1801                  * already DEAD.
1802                  */
1803                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1804                         continue;
1805                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1806                         qla2x00_schedule_rport_del(ha, fcport, defer);
1807                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1808         }
1809
1810         if (defer)
1811                 qla2xxx_wake_dpc(ha);
1812 }
1813
1814 /*
1815 * qla2x00_mem_alloc
1816 *      Allocates adapter memory.
1817 *
1818 * Returns:
1819 *      0  = success.
1820 *      1  = failure.
1821 */
1822 static uint8_t
1823 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1824 {
1825         char    name[16];
1826         uint8_t   status = 1;
1827         int     retry= 10;
1828
1829         do {
1830                 /*
1831                  * This will loop only once if everything goes well, else some
1832                  * number of retries will be performed to get around a kernel
1833                  * bug where available mem is not allocated until after a
1834                  * little delay and a retry.
1835                  */
1836                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1837                     (ha->request_q_length + 1) * sizeof(request_t),
1838                     &ha->request_dma, GFP_KERNEL);
1839                 if (ha->request_ring == NULL) {
1840                         qla_printk(KERN_WARNING, ha,
1841                             "Memory Allocation failed - request_ring\n");
1842
1843                         qla2x00_mem_free(ha);
1844                         msleep(100);
1845
1846                         continue;
1847                 }
1848
1849                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1850                     (ha->response_q_length + 1) * sizeof(response_t),
1851                     &ha->response_dma, GFP_KERNEL);
1852                 if (ha->response_ring == NULL) {
1853                         qla_printk(KERN_WARNING, ha,
1854                             "Memory Allocation failed - response_ring\n");
1855
1856                         qla2x00_mem_free(ha);
1857                         msleep(100);
1858
1859                         continue;
1860                 }
1861
1862                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1863                     &ha->gid_list_dma, GFP_KERNEL);
1864                 if (ha->gid_list == NULL) {
1865                         qla_printk(KERN_WARNING, ha,
1866                             "Memory Allocation failed - gid_list\n");
1867
1868                         qla2x00_mem_free(ha);
1869                         msleep(100);
1870
1871                         continue;
1872                 }
1873
1874                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1875                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1876                     DMA_POOL_SIZE, 8, 0);
1877                 if (ha->s_dma_pool == NULL) {
1878                         qla_printk(KERN_WARNING, ha,
1879                             "Memory Allocation failed - s_dma_pool\n");
1880
1881                         qla2x00_mem_free(ha);
1882                         msleep(100);
1883
1884                         continue;
1885                 }
1886
1887                 /* get consistent memory allocated for init control block */
1888                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1889                     &ha->init_cb_dma);
1890                 if (ha->init_cb == NULL) {
1891                         qla_printk(KERN_WARNING, ha,
1892                             "Memory Allocation failed - init_cb\n");
1893
1894                         qla2x00_mem_free(ha);
1895                         msleep(100);
1896
1897                         continue;
1898                 }
1899                 memset(ha->init_cb, 0, ha->init_cb_size);
1900
1901                 /* Allocate ioctl related memory. */
1902                 if (qla2x00_alloc_ioctl_mem(ha)) {
1903                         qla_printk(KERN_WARNING, ha,
1904                             "Memory Allocation failed - ioctl_mem\n");
1905
1906                         qla2x00_mem_free(ha);
1907                         msleep(100);
1908
1909                         continue;
1910                 }
1911
1912                 if (qla2x00_allocate_sp_pool(ha)) {
1913                         qla_printk(KERN_WARNING, ha,
1914                             "Memory Allocation failed - "
1915                             "qla2x00_allocate_sp_pool()\n");
1916
1917                         qla2x00_mem_free(ha);
1918                         msleep(100);
1919
1920                         continue;
1921                 }
1922
1923                 /* Allocate memory for SNS commands */
1924                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1925                         /* Get consistent memory allocated for SNS commands */
1926                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1927                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1928                             GFP_KERNEL);
1929                         if (ha->sns_cmd == NULL) {
1930                                 /* error */
1931                                 qla_printk(KERN_WARNING, ha,
1932                                     "Memory Allocation failed - sns_cmd\n");
1933
1934                                 qla2x00_mem_free(ha);
1935                                 msleep(100);
1936
1937                                 continue;
1938                         }
1939                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1940                 } else {
1941                         /* Get consistent memory allocated for MS IOCB */
1942                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1943                             &ha->ms_iocb_dma);
1944                         if (ha->ms_iocb == NULL) {
1945                                 /* error */
1946                                 qla_printk(KERN_WARNING, ha,
1947                                     "Memory Allocation failed - ms_iocb\n");
1948
1949                                 qla2x00_mem_free(ha);
1950                                 msleep(100);
1951
1952                                 continue;
1953                         }
1954                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1955
1956                         /*
1957                          * Get consistent memory allocated for CT SNS
1958                          * commands
1959                          */
1960                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1961                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1962                             GFP_KERNEL);
1963                         if (ha->ct_sns == NULL) {
1964                                 /* error */
1965                                 qla_printk(KERN_WARNING, ha,
1966                                     "Memory Allocation failed - ct_sns\n");
1967
1968                                 qla2x00_mem_free(ha);
1969                                 msleep(100);
1970
1971                                 continue;
1972                         }
1973                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1974                 }
1975
1976                 /* Done all allocations without any error. */
1977                 status = 0;
1978
1979         } while (retry-- && status != 0);
1980
1981         if (status) {
1982                 printk(KERN_WARNING
1983                         "%s(): **** FAILED ****\n", __func__);
1984         }
1985
1986         return(status);
1987 }
1988
1989 /*
1990 * qla2x00_mem_free
1991 *      Frees all adapter allocated memory.
1992 *
1993 * Input:
1994 *      ha = adapter block pointer.
1995 */
1996 static void
1997 qla2x00_mem_free(scsi_qla_host_t *ha)
1998 {
1999         struct list_head        *fcpl, *fcptemp;
2000         fc_port_t       *fcport;
2001
2002         if (ha == NULL) {
2003                 /* error */
2004                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2005                 return;
2006         }
2007
2008         /* free ioctl memory */
2009         qla2x00_free_ioctl_mem(ha);
2010
2011         /* free sp pool */
2012         qla2x00_free_sp_pool(ha);
2013
2014         if (ha->sns_cmd)
2015                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2016                     ha->sns_cmd, ha->sns_cmd_dma);
2017
2018         if (ha->ct_sns)
2019                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2020                     ha->ct_sns, ha->ct_sns_dma);
2021
2022         if (ha->ms_iocb)
2023                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2024
2025         if (ha->init_cb)
2026                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2027
2028         if (ha->s_dma_pool)
2029                 dma_pool_destroy(ha->s_dma_pool);
2030
2031         if (ha->gid_list)
2032                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2033                     ha->gid_list_dma);
2034
2035         if (ha->response_ring)
2036                 dma_free_coherent(&ha->pdev->dev,
2037                     (ha->response_q_length + 1) * sizeof(response_t),
2038                     ha->response_ring, ha->response_dma);
2039
2040         if (ha->request_ring)
2041                 dma_free_coherent(&ha->pdev->dev,
2042                     (ha->request_q_length + 1) * sizeof(request_t),
2043                     ha->request_ring, ha->request_dma);
2044
2045         ha->sns_cmd = NULL;
2046         ha->sns_cmd_dma = 0;
2047         ha->ct_sns = NULL;
2048         ha->ct_sns_dma = 0;
2049         ha->ms_iocb = NULL;
2050         ha->ms_iocb_dma = 0;
2051         ha->init_cb = NULL;
2052         ha->init_cb_dma = 0;
2053
2054         ha->s_dma_pool = NULL;
2055
2056         ha->gid_list = NULL;
2057         ha->gid_list_dma = 0;
2058
2059         ha->response_ring = NULL;
2060         ha->response_dma = 0;
2061         ha->request_ring = NULL;
2062         ha->request_dma = 0;
2063
2064         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2065                 fcport = list_entry(fcpl, fc_port_t, list);
2066
2067                 /* fc ports */
2068                 list_del_init(&fcport->list);
2069                 kfree(fcport);
2070         }
2071         INIT_LIST_HEAD(&ha->fcports);
2072
2073         if (ha->fw_dump)
2074                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2075
2076         vfree(ha->fw_dump24);
2077
2078         vfree(ha->fw_dump_buffer);
2079
2080         ha->fw_dump = NULL;
2081         ha->fw_dump24 = NULL;
2082         ha->fw_dumped = 0;
2083         ha->fw_dump_reading = 0;
2084         ha->fw_dump_buffer = NULL;
2085
2086         vfree(ha->optrom_buffer);
2087 }
2088
2089 /*
2090  * qla2x00_allocate_sp_pool
2091  *       This routine is called during initialization to allocate
2092  *       memory for local srb_t.
2093  *
2094  * Input:
2095  *       ha   = adapter block pointer.
2096  *
2097  * Context:
2098  *      Kernel context.
2099  */
2100 static int
2101 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2102 {
2103         int      rval;
2104
2105         rval = QLA_SUCCESS;
2106         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2107         if (ha->srb_mempool == NULL) {
2108                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2109                 rval = QLA_FUNCTION_FAILED;
2110         }
2111         return (rval);
2112 }
2113
2114 /*
2115  *  This routine frees all adapter allocated memory.
2116  *
2117  */
2118 static void
2119 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2120 {
2121         if (ha->srb_mempool) {
2122                 mempool_destroy(ha->srb_mempool);
2123                 ha->srb_mempool = NULL;
2124         }
2125 }
2126
2127 /**************************************************************************
2128 * qla2x00_do_dpc
2129 *   This kernel thread is a task that is schedule by the interrupt handler
2130 *   to perform the background processing for interrupts.
2131 *
2132 * Notes:
2133 * This task always run in the context of a kernel thread.  It
2134 * is kick-off by the driver's detect code and starts up
2135 * up one per adapter. It immediately goes to sleep and waits for
2136 * some fibre event.  When either the interrupt handler or
2137 * the timer routine detects a event it will one of the task
2138 * bits then wake us up.
2139 **************************************************************************/
2140 static int
2141 qla2x00_do_dpc(void *data)
2142 {
2143         scsi_qla_host_t *ha;
2144         fc_port_t       *fcport;
2145         uint8_t         status;
2146         uint16_t        next_loopid;
2147
2148         ha = (scsi_qla_host_t *)data;
2149
2150         set_user_nice(current, -20);
2151
2152         while (!kthread_should_stop()) {
2153                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2154
2155                 set_current_state(TASK_INTERRUPTIBLE);
2156                 schedule();
2157                 __set_current_state(TASK_RUNNING);
2158
2159                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2160
2161                 /* Initialization not yet finished. Don't do anything yet. */
2162                 if (!ha->flags.init_done)
2163                         continue;
2164
2165                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2166
2167                 ha->dpc_active = 1;
2168
2169                 if (ha->flags.mbox_busy) {
2170                         ha->dpc_active = 0;
2171                         continue;
2172                 }
2173
2174                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2175
2176                         DEBUG(printk("scsi(%ld): dpc: sched "
2177                             "qla2x00_abort_isp ha = %p\n",
2178                             ha->host_no, ha));
2179                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2180                             &ha->dpc_flags))) {
2181
2182                                 if (qla2x00_abort_isp(ha)) {
2183                                         /* failed. retry later */
2184                                         set_bit(ISP_ABORT_NEEDED,
2185                                             &ha->dpc_flags);
2186                                 }
2187                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2188                         }
2189                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2190                             ha->host_no));
2191                 }
2192
2193                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2194                         qla2x00_update_fcports(ha);
2195
2196                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2197                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2198                             ha->host_no));
2199                         qla2x00_loop_reset(ha);
2200                 }
2201
2202                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2203                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2204
2205                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2206                             ha->host_no));
2207
2208                         qla2x00_rst_aen(ha);
2209                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2210                 }
2211
2212                 /* Retry each device up to login retry count */
2213                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2214                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2215                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2216
2217                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2218                             ha->host_no));
2219
2220                         next_loopid = 0;
2221                         list_for_each_entry(fcport, &ha->fcports, list) {
2222                                 if (fcport->port_type != FCT_TARGET)
2223                                         continue;
2224
2225                                 /*
2226                                  * If the port is not ONLINE then try to login
2227                                  * to it if we haven't run out of retries.
2228                                  */
2229                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2230                                     fcport->login_retry) {
2231
2232                                         fcport->login_retry--;
2233                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2234                                                 if (fcport->flags &
2235                                                     FCF_TAPE_PRESENT)
2236                                                         ha->isp_ops.fabric_logout(
2237                                                             ha, fcport->loop_id,
2238                                                             fcport->d_id.b.domain,
2239                                                             fcport->d_id.b.area,
2240                                                             fcport->d_id.b.al_pa);
2241                                                 status = qla2x00_fabric_login(
2242                                                     ha, fcport, &next_loopid);
2243                                         } else
2244                                                 status =
2245                                                     qla2x00_local_device_login(
2246                                                         ha, fcport);
2247
2248                                         if (status == QLA_SUCCESS) {
2249                                                 fcport->old_loop_id = fcport->loop_id;
2250
2251                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2252                                                     ha->host_no, fcport->loop_id));
2253
2254                                                 qla2x00_update_fcport(ha,
2255                                                     fcport);
2256                                         } else if (status == 1) {
2257                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2258                                                 /* retry the login again */
2259                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2260                                                     ha->host_no,
2261                                                     fcport->login_retry, fcport->loop_id));
2262                                         } else {
2263                                                 fcport->login_retry = 0;
2264                                         }
2265                                 }
2266                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2267                                         break;
2268                         }
2269                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2270                             ha->host_no));
2271                 }
2272
2273                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2274                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2275
2276                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2277                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2278                             ha->host_no));
2279
2280                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2281
2282                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2283                             ha->host_no));
2284                 }
2285
2286                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2287
2288                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2289                             ha->host_no));
2290
2291                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2292                             &ha->dpc_flags))) {
2293
2294                                 qla2x00_loop_resync(ha);
2295
2296                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2297                         }
2298
2299                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2300                             ha->host_no));
2301                 }
2302
2303                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2304
2305                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2306                             ha->host_no));
2307
2308                         qla2x00_rescan_fcports(ha);
2309
2310                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2311                             "end.\n",
2312                             ha->host_no));
2313                 }
2314
2315                 if (!ha->interrupts_on)
2316                         ha->isp_ops.enable_intrs(ha);
2317
2318                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2319                         ha->isp_ops.beacon_blink(ha);
2320
2321                 ha->dpc_active = 0;
2322         } /* End of while(1) */
2323
2324         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2325
2326         /*
2327          * Make sure that nobody tries to wake us up again.
2328          */
2329         ha->dpc_active = 0;
2330
2331         return 0;
2332 }
2333
2334 void
2335 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2336 {
2337         if (ha->dpc_thread)
2338                 wake_up_process(ha->dpc_thread);
2339 }
2340
2341 /*
2342 *  qla2x00_rst_aen
2343 *      Processes asynchronous reset.
2344 *
2345 * Input:
2346 *      ha  = adapter block pointer.
2347 */
2348 static void
2349 qla2x00_rst_aen(scsi_qla_host_t *ha)
2350 {
2351         if (ha->flags.online && !ha->flags.reset_active &&
2352             !atomic_read(&ha->loop_down_timer) &&
2353             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2354                 do {
2355                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2356
2357                         /*
2358                          * Issue marker command only when we are going to start
2359                          * the I/O.
2360                          */
2361                         ha->marker_needed = 1;
2362                 } while (!atomic_read(&ha->loop_down_timer) &&
2363                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2364         }
2365 }
2366
2367 static void
2368 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2369 {
2370         struct scsi_cmnd *cmd = sp->cmd;
2371
2372         if (sp->flags & SRB_DMA_VALID) {
2373                 if (cmd->use_sg) {
2374                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2375                             cmd->use_sg, cmd->sc_data_direction);
2376                 } else if (cmd->request_bufflen) {
2377                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2378                             cmd->request_bufflen, cmd->sc_data_direction);
2379                 }
2380                 sp->flags &= ~SRB_DMA_VALID;
2381         }
2382         CMD_SP(cmd) = NULL;
2383 }
2384
2385 void
2386 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2387 {
2388         struct scsi_cmnd *cmd = sp->cmd;
2389
2390         qla2x00_sp_free_dma(ha, sp);
2391
2392         mempool_free(sp, ha->srb_mempool);
2393
2394         cmd->scsi_done(cmd);
2395 }
2396
2397 /**************************************************************************
2398 *   qla2x00_timer
2399 *
2400 * Description:
2401 *   One second timer
2402 *
2403 * Context: Interrupt
2404 ***************************************************************************/
2405 static void
2406 qla2x00_timer(scsi_qla_host_t *ha)
2407 {
2408         unsigned long   cpu_flags = 0;
2409         fc_port_t       *fcport;
2410         int             start_dpc = 0;
2411         int             index;
2412         srb_t           *sp;
2413         int             t;
2414
2415         /*
2416          * Ports - Port down timer.
2417          *
2418          * Whenever, a port is in the LOST state we start decrementing its port
2419          * down timer every second until it reaches zero. Once  it reaches zero
2420          * the port it marked DEAD.
2421          */
2422         t = 0;
2423         list_for_each_entry(fcport, &ha->fcports, list) {
2424                 if (fcport->port_type != FCT_TARGET)
2425                         continue;
2426
2427                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2428
2429                         if (atomic_read(&fcport->port_down_timer) == 0)
2430                                 continue;
2431
2432                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2433                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2434
2435                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2436                             "%d remaining\n",
2437                             ha->host_no,
2438                             t, atomic_read(&fcport->port_down_timer)));
2439                 }
2440                 t++;
2441         } /* End of for fcport  */
2442
2443
2444         /* Loop down handler. */
2445         if (atomic_read(&ha->loop_down_timer) > 0 &&
2446             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2447
2448                 if (atomic_read(&ha->loop_down_timer) ==
2449                     ha->loop_down_abort_time) {
2450
2451                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2452                             "queues before time expire\n",
2453                             ha->host_no));
2454
2455                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2456                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2457
2458                         /* Schedule an ISP abort to return any tape commands. */
2459                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2460                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2461                             index++) {
2462                                 fc_port_t *sfcp;
2463
2464                                 sp = ha->outstanding_cmds[index];
2465                                 if (!sp)
2466                                         continue;
2467                                 sfcp = sp->fcport;
2468                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2469                                         continue;
2470
2471                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2472                                 break;
2473                         }
2474                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2475
2476                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2477                         start_dpc++;
2478                 }
2479
2480                 /* if the loop has been down for 4 minutes, reinit adapter */
2481                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2482                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2483                             "restarting queues.\n",
2484                             ha->host_no));
2485
2486                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2487                         start_dpc++;
2488
2489                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2490                                 DEBUG(printk("scsi(%ld): Loop down - "
2491                                     "aborting ISP.\n",
2492                                     ha->host_no));
2493                                 qla_printk(KERN_WARNING, ha,
2494                                     "Loop down - aborting ISP.\n");
2495
2496                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2497                         }
2498                 }
2499                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2500                     ha->host_no,
2501                     atomic_read(&ha->loop_down_timer)));
2502         }
2503
2504         /* Check if beacon LED needs to be blinked */
2505         if (ha->beacon_blink_led == 1) {
2506                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2507                 start_dpc++;
2508         }
2509
2510         /* Schedule the DPC routine if needed */
2511         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2512             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2513             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2514             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2515             start_dpc ||
2516             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2517             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2518             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2519             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2520                 qla2xxx_wake_dpc(ha);
2521
2522         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2523 }
2524
2525 /* XXX(hch): crude hack to emulate a down_timeout() */
2526 int
2527 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2528 {
2529         const unsigned int step = 100; /* msecs */
2530         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2531
2532         do {
2533                 if (!down_trylock(sema))
2534                         return 0;
2535                 if (msleep_interruptible(step))
2536                         break;
2537         } while (--iterations >= 0);
2538
2539         return -ETIMEDOUT;
2540 }
2541
2542 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2543
2544 #define qla2x00_release_firmware()      do { } while (0)
2545 #define qla2x00_pci_module_init()       (0)
2546 #define qla2x00_pci_module_exit()       do { } while (0)
2547
2548 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2549
2550 /* Firmware interface routines. */
2551
2552 #define FW_BLOBS        5
2553 #define FW_ISP21XX      0
2554 #define FW_ISP22XX      1
2555 #define FW_ISP2300      2
2556 #define FW_ISP2322      3
2557 #define FW_ISP24XX      4
2558
2559 static DECLARE_MUTEX(qla_fw_lock);
2560
2561 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2562         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2563         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2564         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2565         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2566         { .name = "ql2400_fw.bin", },
2567 };
2568
2569 struct fw_blob *
2570 qla2x00_request_firmware(scsi_qla_host_t *ha)
2571 {
2572         struct fw_blob *blob;
2573
2574         blob = NULL;
2575         if (IS_QLA2100(ha)) {
2576                 blob = &qla_fw_blobs[FW_ISP21XX];
2577         } else if (IS_QLA2200(ha)) {
2578                 blob = &qla_fw_blobs[FW_ISP22XX];
2579         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2580                 blob = &qla_fw_blobs[FW_ISP2300];
2581         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2582                 blob = &qla_fw_blobs[FW_ISP2322];
2583         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2584                 blob = &qla_fw_blobs[FW_ISP24XX];
2585         }
2586
2587         down(&qla_fw_lock);
2588         if (blob->fw)
2589                 goto out;
2590
2591         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2592                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2593                     "(%s).\n", ha->host_no, blob->name));
2594                 blob->fw = NULL;
2595                 blob = NULL;
2596                 goto out;
2597         }
2598
2599 out:
2600         up(&qla_fw_lock);
2601         return blob;
2602 }
2603
2604 static void
2605 qla2x00_release_firmware(void)
2606 {
2607         int idx;
2608
2609         down(&qla_fw_lock);
2610         for (idx = 0; idx < FW_BLOBS; idx++)
2611                 if (qla_fw_blobs[idx].fw)
2612                         release_firmware(qla_fw_blobs[idx].fw);
2613         up(&qla_fw_lock);
2614 }
2615
2616 static struct qla_board_info qla_board_tbl = {
2617         .drv_name       = "qla2xxx",
2618 };
2619
2620 static struct pci_device_id qla2xxx_pci_tbl[] = {
2621         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2622                 PCI_ANY_ID, PCI_ANY_ID, },
2623         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2624                 PCI_ANY_ID, PCI_ANY_ID, },
2625         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2626                 PCI_ANY_ID, PCI_ANY_ID, },
2627         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2628                 PCI_ANY_ID, PCI_ANY_ID, },
2629         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2630                 PCI_ANY_ID, PCI_ANY_ID, },
2631         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2632                 PCI_ANY_ID, PCI_ANY_ID, },
2633         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2634                 PCI_ANY_ID, PCI_ANY_ID, },
2635         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2636                 PCI_ANY_ID, PCI_ANY_ID, },
2637         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2638                 PCI_ANY_ID, PCI_ANY_ID, },
2639         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422,
2640                 PCI_ANY_ID, PCI_ANY_ID, },
2641         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432,
2642                 PCI_ANY_ID, PCI_ANY_ID, },
2643         { 0 },
2644 };
2645 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2646
2647 static int __devinit
2648 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2649 {
2650         return qla2x00_probe_one(pdev, &qla_board_tbl);
2651 }
2652
2653 static void __devexit
2654 qla2xxx_remove_one(struct pci_dev *pdev)
2655 {
2656         qla2x00_remove_one(pdev);
2657 }
2658
2659 static struct pci_driver qla2xxx_pci_driver = {
2660         .name           = "qla2xxx",
2661         .driver         = {
2662                 .owner          = THIS_MODULE,
2663         },
2664         .id_table       = qla2xxx_pci_tbl,
2665         .probe          = qla2xxx_probe_one,
2666         .remove         = __devexit_p(qla2xxx_remove_one),
2667 };
2668
2669 static inline int
2670 qla2x00_pci_module_init(void)
2671 {
2672         return pci_module_init(&qla2xxx_pci_driver);
2673 }
2674
2675 static inline void
2676 qla2x00_pci_module_exit(void)
2677 {
2678         pci_unregister_driver(&qla2xxx_pci_driver);
2679 }
2680
2681 #endif
2682
2683 /**
2684  * qla2x00_module_init - Module initialization.
2685  **/
2686 static int __init
2687 qla2x00_module_init(void)
2688 {
2689         int ret = 0;
2690
2691         /* Allocate cache for SRBs. */
2692         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2693             SLAB_HWCACHE_ALIGN, NULL, NULL);
2694         if (srb_cachep == NULL) {
2695                 printk(KERN_ERR
2696                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2697                 return -ENOMEM;
2698         }
2699
2700         /* Derive version string. */
2701         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2702 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2703         strcat(qla2x00_version_str, "-fw");
2704 #endif
2705 #if DEBUG_QLA2100
2706         strcat(qla2x00_version_str, "-debug");
2707 #endif
2708         qla2xxx_transport_template =
2709             fc_attach_transport(&qla2xxx_transport_functions);
2710         if (!qla2xxx_transport_template)
2711                 return -ENODEV;
2712
2713         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2714         ret = qla2x00_pci_module_init();
2715         if (ret) {
2716                 kmem_cache_destroy(srb_cachep);
2717                 fc_release_transport(qla2xxx_transport_template);
2718         }
2719         return ret;
2720 }
2721
2722 /**
2723  * qla2x00_module_exit - Module cleanup.
2724  **/
2725 static void __exit
2726 qla2x00_module_exit(void)
2727 {
2728         qla2x00_pci_module_exit();
2729         qla2x00_release_firmware();
2730         kmem_cache_destroy(srb_cachep);
2731         fc_release_transport(qla2xxx_transport_template);
2732 }
2733
2734 module_init(qla2x00_module_init);
2735 module_exit(qla2x00_module_exit);
2736
2737 MODULE_AUTHOR("QLogic Corporation");
2738 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2739 MODULE_LICENSE("GPL");
2740 MODULE_VERSION(QLA2XXX_VERSION);