drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/smp_lock.h>
  12 #include <linux/delay.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
  58 int ql2xfwloadflash;
  59 module_param(ql2xfwloadflash, int, S_IRUGO|S_IRUSR);
  60 MODULE_PARM_DESC(ql2xfwloadflash,
  61                 "Load ISP24xx firmware image from FLASH (onboard memory).");
  62 #endif
  63
  64 static void qla2x00_free_device(scsi_qla_host_t *);
  65
  66 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  67
  68 int ql2xfdmienable;
  69 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  70 MODULE_PARM_DESC(ql2xfdmienable,
  71                 "Enables FDMI registratons "
  72                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  73
  74 int ql2xprocessrscn;
  75 module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xprocessrscn,
  77                 "Option to enable port RSCN handling via a series of less"
  78                 "fabric intrusive ADISCs and PLOGIs.");
  79
  80 /*
  81  * SCSI host template entry points
  82  */
  83 static int qla2xxx_slave_configure(struct scsi_device * device);
  84 static int qla2xxx_slave_alloc(struct scsi_device *);
  85 static void qla2xxx_slave_destroy(struct scsi_device *);
  86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  87                 void (*fn)(struct scsi_cmnd *));
  88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  89                 void (*fn)(struct scsi_cmnd *));
  90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  96
  97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  98 static int qla2x00_change_queue_type(struct scsi_device *, int);
  99
 100 static struct scsi_host_template qla2x00_driver_template = {
 101         .module                 = THIS_MODULE,
 102         .name                   = "qla2xxx",
 103         .queuecommand           = qla2x00_queuecommand,
 104
 105         .eh_abort_handler       = qla2xxx_eh_abort,
 106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 109
 110         .slave_configure        = qla2xxx_slave_configure,
 111
 112         .slave_alloc            = qla2xxx_slave_alloc,
 113         .slave_destroy          = qla2xxx_slave_destroy,
 114         .change_queue_depth     = qla2x00_change_queue_depth,
 115         .change_queue_type      = qla2x00_change_queue_type,
 116         .this_id                = -1,
 117         .cmd_per_lun            = 3,
 118         .use_clustering         = ENABLE_CLUSTERING,
 119         .sg_tablesize           = SG_ALL,
 120
 121         /*
 122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 123          * which equates to 0x800000 sectors.
 124          */
 125         .max_sectors            = 0xFFFF,
 126         .shost_attrs            = qla2x00_host_attrs,
 127 };
 128
 129 static struct scsi_host_template qla24xx_driver_template = {
 130         .module                 = THIS_MODULE,
 131         .name                   = "qla2xxx",
 132         .queuecommand           = qla24xx_queuecommand,
 133
 134         .eh_abort_handler       = qla2xxx_eh_abort,
 135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 138
 139         .slave_configure        = qla2xxx_slave_configure,
 140
 141         .slave_alloc            = qla2xxx_slave_alloc,
 142         .slave_destroy          = qla2xxx_slave_destroy,
 143         .change_queue_depth     = qla2x00_change_queue_depth,
 144         .change_queue_type      = qla2x00_change_queue_type,
 145         .this_id                = -1,
 146         .cmd_per_lun            = 3,
 147         .use_clustering         = ENABLE_CLUSTERING,
 148         .sg_tablesize           = SG_ALL,
 149
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 155
 156 /* TODO Convert to inlines
 157  *
 158  * Timer routines
 159  */
 160 #define WATCH_INTERVAL          1       /* number of seconds */
 161
 162 static void qla2x00_timer(scsi_qla_host_t *);
 163
 164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 165     void *, unsigned long);
 166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 168
 169 static inline void
 170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 171 {
 172         init_timer(&ha->timer);
 173         ha->timer.expires = jiffies + interval * HZ;
 174         ha->timer.data = (unsigned long)ha;
 175         ha->timer.function = (void (*)(unsigned long))func;
 176         add_timer(&ha->timer);
 177         ha->timer_active = 1;
 178 }
 179
 180 static inline void
 181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 182 {
 183         mod_timer(&ha->timer, jiffies + interval * HZ);
 184 }
 185
 186 static __inline__ void
 187 qla2x00_stop_timer(scsi_qla_host_t *ha)
 188 {
 189         del_timer_sync(&ha->timer);
 190         ha->timer_active = 0;
 191 }
 192
 193 static int qla2x00_do_dpc(void *data);
 194
 195 static void qla2x00_rst_aen(scsi_qla_host_t *);
 196
 197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 203
 204 /* -------------------------------------------------------------------------- */
 205
 206 static char *
 207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 208 {
 209         static char *pci_bus_modes[] = {
 210                 "33", "66", "100", "133",
 211         };
 212         uint16_t pci_bus;
 213
 214         strcpy(str, "PCI");
 215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 216         if (pci_bus) {
 217                 strcat(str, "-X (");
 218                 strcat(str, pci_bus_modes[pci_bus]);
 219         } else {
 220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 221                 strcat(str, " (");
 222                 strcat(str, pci_bus_modes[pci_bus]);
 223         }
 224         strcat(str, " MHz)");
 225
 226         return (str);
 227 }
 228
 229 static char *
 230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 231 {
 232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 233         uint32_t pci_bus;
 234         int pcie_reg;
 235
 236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 237         if (pcie_reg) {
 238                 char lwstr[6];
 239                 uint16_t pcie_lstat, lspeed, lwidth;
 240
 241                 pcie_reg += 0x12;
 242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 244                 lwidth = (pcie_lstat &
 245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 246
 247                 strcpy(str, "PCIe (");
 248                 if (lspeed == 1)
 249                         strcat(str, "2.5Gb/s ");
 250                 else
 251                         strcat(str, "<unknown> ");
 252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 253                 strcat(str, lwstr);
 254
 255                 return str;
 256         }
 257
 258         strcpy(str, "PCI");
 259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 260         if (pci_bus == 0 || pci_bus == 8) {
 261                 strcat(str, " (");
 262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 263         } else {
 264                 strcat(str, "-X ");
 265                 if (pci_bus & BIT_2)
 266                         strcat(str, "Mode 2");
 267                 else
 268                         strcat(str, "Mode 1");
 269                 strcat(str, " (");
 270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 271         }
 272         strcat(str, " MHz)");
 273
 274         return str;
 275 }
 276
 277 char *
 278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 279 {
 280         char un_str[10];
 281
 282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 283             ha->fw_minor_version,
 284             ha->fw_subminor_version);
 285
 286         if (ha->fw_attributes & BIT_9) {
 287                 strcat(str, "FLX");
 288                 return (str);
 289         }
 290
 291         switch (ha->fw_attributes & 0xFF) {
 292         case 0x7:
 293                 strcat(str, "EF");
 294                 break;
 295         case 0x17:
 296                 strcat(str, "TP");
 297                 break;
 298         case 0x37:
 299                 strcat(str, "IP");
 300                 break;
 301         case 0x77:
 302                 strcat(str, "VI");
 303                 break;
 304         default:
 305                 sprintf(un_str, "(%x)", ha->fw_attributes);
 306                 strcat(str, un_str);
 307                 break;
 308         }
 309         if (ha->fw_attributes & 0x100)
 310                 strcat(str, "X");
 311
 312         return (str);
 313 }
 314
 315 char *
 316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 317 {
 318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 319             ha->fw_minor_version,
 320             ha->fw_subminor_version);
 321
 322         if (ha->fw_attributes & BIT_0)
 323                 strcat(str, "[Class 2] ");
 324         if (ha->fw_attributes & BIT_1)
 325                 strcat(str, "[IP] ");
 326         if (ha->fw_attributes & BIT_2)
 327                 strcat(str, "[Multi-ID] ");
 328         if (ha->fw_attributes & BIT_13)
 329                 strcat(str, "[Experimental]");
 330         return str;
 331 }
 332
 333 static inline srb_t *
 334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 336 {
 337         srb_t *sp;
 338
 339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 340         if (!sp)
 341                 return sp;
 342
 343         atomic_set(&sp->ref_count, 1);
 344         sp->ha = ha;
 345         sp->fcport = fcport;
 346         sp->cmd = cmd;
 347         sp->flags = 0;
 348         CMD_SP(cmd) = (void *)sp;
 349         cmd->scsi_done = done;
 350
 351         return sp;
 352 }
 353
 354 static int
 355 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 356 {
 357         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 358         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 359         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 360         srb_t *sp;
 361         int rval;
 362
 363         rval = fc_remote_port_chkready(rport);
 364         if (rval) {
 365                 cmd->result = rval;
 366                 goto qc_fail_command;
 367         }
 368
 369         /* Close window on fcport/rport state-transitioning. */
 370         if (!*(fc_port_t **)rport->dd_data) {
 371                 cmd->result = DID_IMM_RETRY << 16;
 372                 goto qc_fail_command;
 373         }
 374
 375         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 376                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 377                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 378                         cmd->result = DID_NO_CONNECT << 16;
 379                         goto qc_fail_command;
 380                 }
 381                 goto qc_host_busy;
 382         }
 383
 384         spin_unlock_irq(ha->host->host_lock);
 385
 386         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 387         if (!sp)
 388                 goto qc_host_busy_lock;
 389
 390         rval = qla2x00_start_scsi(sp);
 391         if (rval != QLA_SUCCESS)
 392                 goto qc_host_busy_free_sp;
 393
 394         spin_lock_irq(ha->host->host_lock);
 395
 396         return 0;
 397
 398 qc_host_busy_free_sp:
 399         qla2x00_sp_free_dma(ha, sp);
 400         mempool_free(sp, ha->srb_mempool);
 401
 402 qc_host_busy_lock:
 403         spin_lock_irq(ha->host->host_lock);
 404
 405 qc_host_busy:
 406         return SCSI_MLQUEUE_HOST_BUSY;
 407
 408 qc_fail_command:
 409         done(cmd);
 410
 411         return 0;
 412 }
 413
 414
 415 static int
 416 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 417 {
 418         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 419         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 420         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 421         srb_t *sp;
 422         int rval;
 423
 424         rval = fc_remote_port_chkready(rport);
 425         if (rval) {
 426                 cmd->result = rval;
 427                 goto qc24_fail_command;
 428         }
 429
 430         /* Close window on fcport/rport state-transitioning. */
 431         if (!*(fc_port_t **)rport->dd_data) {
 432                 cmd->result = DID_IMM_RETRY << 16;
 433                 goto qc24_fail_command;
 434         }
 435
 436         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 437                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 438                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 439                         cmd->result = DID_NO_CONNECT << 16;
 440                         goto qc24_fail_command;
 441                 }
 442                 goto qc24_host_busy;
 443         }
 444
 445         spin_unlock_irq(ha->host->host_lock);
 446
 447         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 448         if (!sp)
 449                 goto qc24_host_busy_lock;
 450
 451         rval = qla24xx_start_scsi(sp);
 452         if (rval != QLA_SUCCESS)
 453                 goto qc24_host_busy_free_sp;
 454
 455         spin_lock_irq(ha->host->host_lock);
 456
 457         return 0;
 458
 459 qc24_host_busy_free_sp:
 460         qla2x00_sp_free_dma(ha, sp);
 461         mempool_free(sp, ha->srb_mempool);
 462
 463 qc24_host_busy_lock:
 464         spin_lock_irq(ha->host->host_lock);
 465
 466 qc24_host_busy:
 467         return SCSI_MLQUEUE_HOST_BUSY;
 468
 469 qc24_fail_command:
 470         done(cmd);
 471
 472         return 0;
 473 }
 474
 475
 476 /*
 477  * qla2x00_eh_wait_on_command
 478  *    Waits for the command to be returned by the Firmware for some
 479  *    max time.
 480  *
 481  * Input:
 482  *    ha = actual ha whose done queue will contain the command
 483  *            returned by firmware.
 484  *    cmd = Scsi Command to wait on.
 485  *    flag = Abort/Reset(Bus or Device Reset)
 486  *
 487  * Return:
 488  *    Not Found : 0
 489  *    Found : 1
 490  */
 491 static int
 492 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 493 {
 494 #define ABORT_POLLING_PERIOD    1000
 495 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 496         unsigned long wait_iter = ABORT_WAIT_ITER;
 497         int ret = QLA_SUCCESS;
 498
 499         while (CMD_SP(cmd)) {
 500                 msleep(ABORT_POLLING_PERIOD);
 501
 502                 if (--wait_iter)
 503                         break;
 504         }
 505         if (CMD_SP(cmd))
 506                 ret = QLA_FUNCTION_FAILED;
 507
 508         return ret;
 509 }
 510
 511 /*
 512  * qla2x00_wait_for_hba_online
 513  *    Wait till the HBA is online after going through
 514  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 515  *    finally HBA is disabled ie marked offline
 516  *
 517  * Input:
 518  *     ha - pointer to host adapter structure
 519  *
 520  * Note:
 521  *    Does context switching-Release SPIN_LOCK
 522  *    (if any) before calling this routine.
 523  *
 524  * Return:
 525  *    Success (Adapter is online) : 0
 526  *    Failed  (Adapter is offline/disabled) : 1
 527  */
 528 int
 529 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 530 {
 531         int             return_status;
 532         unsigned long   wait_online;
 533
 534         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 535         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 536             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 537             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 538             ha->dpc_active) && time_before(jiffies, wait_online)) {
 539
 540                 msleep(1000);
 541         }
 542         if (ha->flags.online)
 543                 return_status = QLA_SUCCESS;
 544         else
 545                 return_status = QLA_FUNCTION_FAILED;
 546
 547         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 548
 549         return (return_status);
 550 }
 551
 552 /*
 553  * qla2x00_wait_for_loop_ready
 554  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 555  *    to be in LOOP_READY state.
 556  * Input:
 557  *     ha - pointer to host adapter structure
 558  *
 559  * Note:
 560  *    Does context switching-Release SPIN_LOCK
 561  *    (if any) before calling this routine.
 562  *
 563  *
 564  * Return:
 565  *    Success (LOOP_READY) : 0
 566  *    Failed  (LOOP_NOT_READY) : 1
 567  */
 568 static inline int
 569 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 570 {
 571         int      return_status = QLA_SUCCESS;
 572         unsigned long loop_timeout ;
 573
 574         /* wait for 5 min at the max for loop to be ready */
 575         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 576
 577         while ((!atomic_read(&ha->loop_down_timer) &&
 578             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 579             atomic_read(&ha->loop_state) != LOOP_READY) {
 580                 msleep(1000);
 581                 if (time_after_eq(jiffies, loop_timeout)) {
 582                         return_status = QLA_FUNCTION_FAILED;
 583                         break;
 584                 }
 585         }
 586         return (return_status);
 587 }
 588
 589 /**************************************************************************
 590 * qla2xxx_eh_abort
 591 *
 592 * Description:
 593 *    The abort function will abort the specified command.
 594 *
 595 * Input:
 596 *    cmd = Linux SCSI command packet to be aborted.
 597 *
 598 * Returns:
 599 *    Either SUCCESS or FAILED.
 600 *
 601 * Note:
 602 **************************************************************************/
 603 int
 604 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 605 {
 606         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 607         srb_t *sp;
 608         int ret, i;
 609         unsigned int id, lun;
 610         unsigned long serial;
 611         unsigned long flags;
 612
 613         if (!CMD_SP(cmd))
 614                 return FAILED;
 615
 616         ret = FAILED;
 617
 618         id = cmd->device->id;
 619         lun = cmd->device->lun;
 620         serial = cmd->serial_number;
 621
 622         /* Check active list for command command. */
 623         spin_lock_irqsave(&ha->hardware_lock, flags);
 624         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 625                 sp = ha->outstanding_cmds[i];
 626
 627                 if (sp == NULL)
 628                         continue;
 629
 630                 if (sp->cmd != cmd)
 631                         continue;
 632
 633                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 634                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 635                     sp->state));
 636                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 637
 638                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 639                 if (ha->isp_ops.abort_command(ha, sp)) {
 640                         DEBUG2(printk("%s(%ld): abort_command "
 641                             "mbx failed.\n", __func__, ha->host_no));
 642                 } else {
 643                         DEBUG3(printk("%s(%ld): abort_command "
 644                             "mbx success.\n", __func__, ha->host_no));
 645                         ret = SUCCESS;
 646                 }
 647                 spin_lock_irqsave(&ha->hardware_lock, flags);
 648
 649                 break;
 650         }
 651         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 652
 653         /* Wait for the command to be returned. */
 654         if (ret == SUCCESS) {
 655                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 656                         qla_printk(KERN_ERR, ha,
 657                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 658                             "%x.\n", ha->host_no, id, lun, serial, ret);
 659                 }
 660         }
 661
 662         qla_printk(KERN_INFO, ha,
 663             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 664             id, lun, serial, ret);
 665
 666         return ret;
 667 }
 668
 669 /**************************************************************************
 670 * qla2x00_eh_wait_for_pending_target_commands
 671 *
 672 * Description:
 673 *    Waits for all the commands to come back from the specified target.
 674 *
 675 * Input:
 676 *    ha - pointer to scsi_qla_host structure.
 677 *    t  - target
 678 * Returns:
 679 *    Either SUCCESS or FAILED.
 680 *
 681 * Note:
 682 **************************************************************************/
 683 static int
 684 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 685 {
 686         int     cnt;
 687         int     status;
 688         srb_t           *sp;
 689         struct scsi_cmnd *cmd;
 690         unsigned long flags;
 691
 692         status = 0;
 693
 694         /*
 695          * Waiting for all commands for the designated target in the active
 696          * array
 697          */
 698         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 699                 spin_lock_irqsave(&ha->hardware_lock, flags);
 700                 sp = ha->outstanding_cmds[cnt];
 701                 if (sp) {
 702                         cmd = sp->cmd;
 703                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 704                         if (cmd->device->id == t) {
 705                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 706                                         status = 1;
 707                                         break;
 708                                 }
 709                         }
 710                 } else {
 711                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 712                 }
 713         }
 714         return (status);
 715 }
 716
 717
 718 /**************************************************************************
 719 * qla2xxx_eh_device_reset
 720 *
 721 * Description:
 722 *    The device reset function will reset the target and abort any
 723 *    executing commands.
 724 *
 725 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 726 *          attempt to use this value, even if you determine it is
 727 *          non-null.
 728 *
 729 * Input:
 730 *    cmd = Linux SCSI command packet of the command that cause the
 731 *          bus device reset.
 732 *
 733 * Returns:
 734 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 735 *
 736 **************************************************************************/
 737 int
 738 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 739 {
 740         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 741         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 742         srb_t *sp;
 743         int ret;
 744         unsigned int id, lun;
 745         unsigned long serial;
 746
 747         ret = FAILED;
 748
 749         id = cmd->device->id;
 750         lun = cmd->device->lun;
 751         serial = cmd->serial_number;
 752
 753         sp = (srb_t *) CMD_SP(cmd);
 754         if (!sp || !fcport)
 755                 return ret;
 756
 757         qla_printk(KERN_INFO, ha,
 758             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 759
 760         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 761                 goto eh_dev_reset_done;
 762
 763         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 764                 if (qla2x00_device_reset(ha, fcport) == 0)
 765                         ret = SUCCESS;
 766
 767 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 768                 if (ret == SUCCESS) {
 769                         if (fcport->flags & FC_FABRIC_DEVICE) {
 770                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 771                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 772                         }
 773                 }
 774 #endif
 775         } else {
 776                 DEBUG2(printk(KERN_INFO
 777                     "%s failed: loop not ready\n",__func__);)
 778         }
 779
 780         if (ret == FAILED) {
 781                 DEBUG3(printk("%s(%ld): device reset failed\n",
 782                     __func__, ha->host_no));
 783                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 784                     __func__);
 785
 786                 goto eh_dev_reset_done;
 787         }
 788
 789         /* Flush outstanding commands. */
 790         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 791                 ret = FAILED;
 792         if (ret == FAILED) {
 793                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 794                     __func__, ha->host_no));
 795                 qla_printk(KERN_INFO, ha,
 796                     "%s: failed while waiting for commands\n", __func__);
 797         } else
 798                 qla_printk(KERN_INFO, ha,
 799                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 800                     id, lun);
 801  eh_dev_reset_done:
 802         return ret;
 803 }
 804
 805 /**************************************************************************
 806 * qla2x00_eh_wait_for_pending_commands
 807 *
 808 * Description:
 809 *    Waits for all the commands to come back from the specified host.
 810 *
 811 * Input:
 812 *    ha - pointer to scsi_qla_host structure.
 813 *
 814 * Returns:
 815 *    1 : SUCCESS
 816 *    0 : FAILED
 817 *
 818 * Note:
 819 **************************************************************************/
 820 static int
 821 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 822 {
 823         int     cnt;
 824         int     status;
 825         srb_t           *sp;
 826         struct scsi_cmnd *cmd;
 827         unsigned long flags;
 828
 829         status = 1;
 830
 831         /*
 832          * Waiting for all commands for the designated target in the active
 833          * array
 834          */
 835         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 836                 spin_lock_irqsave(&ha->hardware_lock, flags);
 837                 sp = ha->outstanding_cmds[cnt];
 838                 if (sp) {
 839                         cmd = sp->cmd;
 840                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 841                         status = qla2x00_eh_wait_on_command(ha, cmd);
 842                         if (status == 0)
 843                                 break;
 844                 }
 845                 else {
 846                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 847                 }
 848         }
 849         return (status);
 850 }
 851
 852
 853 /**************************************************************************
 854 * qla2xxx_eh_bus_reset
 855 *
 856 * Description:
 857 *    The bus reset function will reset the bus and abort any executing
 858 *    commands.
 859 *
 860 * Input:
 861 *    cmd = Linux SCSI command packet of the command that cause the
 862 *          bus reset.
 863 *
 864 * Returns:
 865 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 866 *
 867 **************************************************************************/
 868 int
 869 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 870 {
 871         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 872         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 873         srb_t *sp;
 874         int ret;
 875         unsigned int id, lun;
 876         unsigned long serial;
 877
 878         ret = FAILED;
 879
 880         id = cmd->device->id;
 881         lun = cmd->device->lun;
 882         serial = cmd->serial_number;
 883
 884         sp = (srb_t *) CMD_SP(cmd);
 885         if (!sp || !fcport)
 886                 return ret;
 887
 888         qla_printk(KERN_INFO, ha,
 889             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 890
 891         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 892                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 893                 goto eh_bus_reset_done;
 894         }
 895
 896         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 897                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 898                         ret = SUCCESS;
 899         }
 900         if (ret == FAILED)
 901                 goto eh_bus_reset_done;
 902
 903         /* Flush outstanding commands. */
 904         if (!qla2x00_eh_wait_for_pending_commands(ha))
 905                 ret = FAILED;
 906
 907 eh_bus_reset_done:
 908         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 909             (ret == FAILED) ? "failed" : "succeded");
 910
 911         return ret;
 912 }
 913
 914 /**************************************************************************
 915 * qla2xxx_eh_host_reset
 916 *
 917 * Description:
 918 *    The reset function will reset the Adapter.
 919 *
 920 * Input:
 921 *      cmd = Linux SCSI command packet of the command that cause the
 922 *            adapter reset.
 923 *
 924 * Returns:
 925 *      Either SUCCESS or FAILED.
 926 *
 927 * Note:
 928 **************************************************************************/
 929 int
 930 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 931 {
 932         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 933         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 934         srb_t *sp;
 935         int ret;
 936         unsigned int id, lun;
 937         unsigned long serial;
 938
 939         ret = FAILED;
 940
 941         id = cmd->device->id;
 942         lun = cmd->device->lun;
 943         serial = cmd->serial_number;
 944
 945         sp = (srb_t *) CMD_SP(cmd);
 946         if (!sp || !fcport)
 947                 return ret;
 948
 949         qla_printk(KERN_INFO, ha,
 950             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 951
 952         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 953                 goto eh_host_reset_lock;
 954
 955         /*
 956          * Fixme-may be dpc thread is active and processing
 957          * loop_resync,so wait a while for it to
 958          * be completed and then issue big hammer.Otherwise
 959          * it may cause I/O failure as big hammer marks the
 960          * devices as lost kicking of the port_down_timer
 961          * while dpc is stuck for the mailbox to complete.
 962          */
 963         qla2x00_wait_for_loop_ready(ha);
 964         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 965         if (qla2x00_abort_isp(ha)) {
 966                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 967                 /* failed. schedule dpc to try */
 968                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 969
 970                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 971                         goto eh_host_reset_lock;
 972         }
 973         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 974
 975         /* Waiting for our command in done_queue to be returned to OS.*/
 976         if (qla2x00_eh_wait_for_pending_commands(ha))
 977                 ret = SUCCESS;
 978
 979 eh_host_reset_lock:
 980         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 981             (ret == FAILED) ? "failed" : "succeded");
 982
 983         return ret;
 984 }
 985
 986 /*
 987 * qla2x00_loop_reset
 988 *      Issue loop reset.
 989 *
 990 * Input:
 991 *      ha = adapter block pointer.
 992 *
 993 * Returns:
 994 *      0 = success
 995 */
 996 static int
 997 qla2x00_loop_reset(scsi_qla_host_t *ha)
 998 {
 999         int status = QLA_SUCCESS;
1000         struct fc_port *fcport;
1001
1002         if (ha->flags.enable_lip_reset) {
1003                 status = qla2x00_lip_reset(ha);
1004         }
1005
1006         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1007                 list_for_each_entry(fcport, &ha->fcports, list) {
1008                         if (fcport->port_type != FCT_TARGET)
1009                                 continue;
1010
1011                         status = qla2x00_device_reset(ha, fcport);
1012                         if (status != QLA_SUCCESS)
1013                                 break;
1014                 }
1015         }
1016
1017         if (status == QLA_SUCCESS &&
1018                 ((!ha->flags.enable_target_reset &&
1019                   !ha->flags.enable_lip_reset) ||
1020                 ha->flags.enable_lip_full_login)) {
1021
1022                 status = qla2x00_full_login_lip(ha);
1023         }
1024
1025         /* Issue marker command only when we are going to start the I/O */
1026         ha->marker_needed = 1;
1027
1028         if (status) {
1029                 /* Empty */
1030                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1031                                 __func__,
1032                                 ha->host_no);)
1033         } else {
1034                 /* Empty */
1035                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1036                                 __func__,
1037                                 ha->host_no);)
1038         }
1039
1040         return(status);
1041 }
1042
1043 /*
1044  * qla2x00_device_reset
1045  *      Issue bus device reset message to the target.
1046  *
1047  * Input:
1048  *      ha = adapter block pointer.
1049  *      t = SCSI ID.
1050  *      TARGET_QUEUE_LOCK must be released.
1051  *      ADAPTER_STATE_LOCK must be released.
1052  *
1053  * Context:
1054  *      Kernel context.
1055  */
1056 static int
1057 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1058 {
1059         /* Abort Target command will clear Reservation */
1060         return ha->isp_ops.abort_target(reset_fcport);
1061 }
1062
1063 static int
1064 qla2xxx_slave_alloc(struct scsi_device *sdev)
1065 {
1066         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1067
1068         if (!rport || fc_remote_port_chkready(rport))
1069                 return -ENXIO;
1070
1071         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1072
1073         return 0;
1074 }
1075
1076 static int
1077 qla2xxx_slave_configure(struct scsi_device *sdev)
1078 {
1079         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1080         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1081
1082         if (sdev->tagged_supported)
1083                 scsi_activate_tcq(sdev, 32);
1084         else
1085                 scsi_deactivate_tcq(sdev, 32);
1086
1087         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1088
1089         return 0;
1090 }
1091
1092 static void
1093 qla2xxx_slave_destroy(struct scsi_device *sdev)
1094 {
1095         sdev->hostdata = NULL;
1096 }
1097
1098 static int
1099 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1100 {
1101         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1102         return sdev->queue_depth;
1103 }
1104
1105 static int
1106 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1107 {
1108         if (sdev->tagged_supported) {
1109                 scsi_set_tag_type(sdev, tag_type);
1110                 if (tag_type)
1111                         scsi_activate_tcq(sdev, sdev->queue_depth);
1112                 else
1113                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1114         } else
1115                 tag_type = 0;
1116
1117         return tag_type;
1118 }
1119
1120 /**
1121  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1122  * @ha: HA context
1123  *
1124  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1125  * supported addressing method.
1126  */
1127 static void
1128 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1129 {
1130         /* Assume a 32bit DMA mask. */
1131         ha->flags.enable_64bit_addressing = 0;
1132
1133         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1134                 /* Any upper-dword bits set? */
1135                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1136                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1137                         /* Ok, a 64bit DMA mask is applicable. */
1138                         ha->flags.enable_64bit_addressing = 1;
1139                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1140                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1141                         return;
1142                 }
1143         }
1144
1145         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1146         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1147 }
1148
1149 static int
1150 qla2x00_iospace_config(scsi_qla_host_t *ha)
1151 {
1152         unsigned long   pio, pio_len, pio_flags;
1153         unsigned long   mmio, mmio_len, mmio_flags;
1154
1155         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1156         pio = pci_resource_start(ha->pdev, 0);
1157         pio_len = pci_resource_len(ha->pdev, 0);
1158         pio_flags = pci_resource_flags(ha->pdev, 0);
1159         if (pio_flags & IORESOURCE_IO) {
1160                 if (pio_len < MIN_IOBASE_LEN) {
1161                         qla_printk(KERN_WARNING, ha,
1162                             "Invalid PCI I/O region size (%s)...\n",
1163                                 pci_name(ha->pdev));
1164                         pio = 0;
1165                 }
1166         } else {
1167                 qla_printk(KERN_WARNING, ha,
1168                     "region #0 not a PIO resource (%s)...\n",
1169                     pci_name(ha->pdev));
1170                 pio = 0;
1171         }
1172
1173         /* Use MMIO operations for all accesses. */
1174         mmio = pci_resource_start(ha->pdev, 1);
1175         mmio_len = pci_resource_len(ha->pdev, 1);
1176         mmio_flags = pci_resource_flags(ha->pdev, 1);
1177
1178         if (!(mmio_flags & IORESOURCE_MEM)) {
1179                 qla_printk(KERN_ERR, ha,
1180                     "region #0 not an MMIO resource (%s), aborting\n",
1181                     pci_name(ha->pdev));
1182                 goto iospace_error_exit;
1183         }
1184         if (mmio_len < MIN_IOBASE_LEN) {
1185                 qla_printk(KERN_ERR, ha,
1186                     "Invalid PCI mem region size (%s), aborting\n",
1187                         pci_name(ha->pdev));
1188                 goto iospace_error_exit;
1189         }
1190
1191         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1192                 qla_printk(KERN_WARNING, ha,
1193                     "Failed to reserve PIO/MMIO regions (%s)\n",
1194                     pci_name(ha->pdev));
1195
1196                 goto iospace_error_exit;
1197         }
1198
1199         ha->pio_address = pio;
1200         ha->pio_length = pio_len;
1201         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1202         if (!ha->iobase) {
1203                 qla_printk(KERN_ERR, ha,
1204                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1205
1206                 goto iospace_error_exit;
1207         }
1208
1209         return (0);
1210
1211 iospace_error_exit:
1212         return (-ENOMEM);
1213 }
1214
1215 static void
1216 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1217 {
1218         unsigned long flags = 0;
1219         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1220
1221         spin_lock_irqsave(&ha->hardware_lock, flags);
1222         ha->interrupts_on = 1;
1223         /* enable risc and host interrupts */
1224         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1225         RD_REG_WORD(&reg->ictrl);
1226         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1227
1228 }
1229
1230 static void
1231 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1232 {
1233         unsigned long flags = 0;
1234         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1235
1236         spin_lock_irqsave(&ha->hardware_lock, flags);
1237         ha->interrupts_on = 0;
1238         /* disable risc and host interrupts */
1239         WRT_REG_WORD(&reg->ictrl, 0);
1240         RD_REG_WORD(&reg->ictrl);
1241         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1242 }
1243
1244 static void
1245 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1246 {
1247         unsigned long flags = 0;
1248         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1249
1250         spin_lock_irqsave(&ha->hardware_lock, flags);
1251         ha->interrupts_on = 1;
1252         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1253         RD_REG_DWORD(&reg->ictrl);
1254         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1255 }
1256
1257 static void
1258 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1259 {
1260         unsigned long flags = 0;
1261         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1262
1263         spin_lock_irqsave(&ha->hardware_lock, flags);
1264         ha->interrupts_on = 0;
1265         WRT_REG_DWORD(&reg->ictrl, 0);
1266         RD_REG_DWORD(&reg->ictrl);
1267         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1268 }
1269
1270 /*
1271  * PCI driver interface
1272  */
1273 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1274 {
1275         int     ret = -ENODEV;
1276         device_reg_t __iomem *reg;
1277         struct Scsi_Host *host;
1278         scsi_qla_host_t *ha;
1279         unsigned long   flags = 0;
1280         unsigned long   wait_switch = 0;
1281         char pci_info[20];
1282         char fw_str[30];
1283         fc_port_t *fcport;
1284         struct scsi_host_template *sht;
1285
1286         if (pci_enable_device(pdev))
1287                 goto probe_out;
1288
1289         sht = &qla2x00_driver_template;
1290         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1291             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1292                 sht = &qla24xx_driver_template;
1293         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1294         if (host == NULL) {
1295                 printk(KERN_WARNING
1296                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1297                 goto probe_disable_device;
1298         }
1299
1300         /* Clear our data area */
1301         ha = (scsi_qla_host_t *)host->hostdata;
1302         memset(ha, 0, sizeof(scsi_qla_host_t));
1303
1304         ha->pdev = pdev;
1305         ha->host = host;
1306         ha->host_no = host->host_no;
1307         ha->brd_info = brd_info;
1308         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1309
1310         ha->dpc_pid = -1;
1311
1312         /* Configure PCI I/O space */
1313         ret = qla2x00_iospace_config(ha);
1314         if (ret)
1315                 goto probe_failed;
1316
1317         qla_printk(KERN_INFO, ha,
1318             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1319             ha->iobase);
1320
1321         spin_lock_init(&ha->hardware_lock);
1322
1323         ha->prev_topology = 0;
1324         ha->ports = MAX_BUSES;
1325         ha->init_cb_size = sizeof(init_cb_t);
1326         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1327         ha->link_data_rate = LDR_UNKNOWN;
1328         ha->optrom_size = OPTROM_SIZE_2300;
1329
1330         /* Assign ISP specific operations. */
1331         ha->isp_ops.pci_config          = qla2100_pci_config;
1332         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1333         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1334         ha->isp_ops.config_rings        = qla2x00_config_rings;
1335         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1336         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1337         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1338         ha->isp_ops.load_risc           = qla2x00_load_risc;
1339         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1340         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1341         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1342         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1343         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1344         ha->isp_ops.abort_command       = qla2x00_abort_command;
1345         ha->isp_ops.abort_target        = qla2x00_abort_target;
1346         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1347         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1348         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1349         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1350         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1351         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1352         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1353         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1354         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1355         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1356         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1357         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1358         if (IS_QLA2100(ha)) {
1359                 host->max_id = MAX_TARGETS_2100;
1360                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1361                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1362                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1363                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1364                 host->sg_tablesize = 32;
1365                 ha->gid_list_info_size = 4;
1366         } else if (IS_QLA2200(ha)) {
1367                 host->max_id = MAX_TARGETS_2200;
1368                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1369                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1370                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1371                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1372                 ha->gid_list_info_size = 4;
1373         } else if (IS_QLA23XX(ha)) {
1374                 host->max_id = MAX_TARGETS_2200;
1375                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1376                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1377                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1378                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1379                 ha->isp_ops.pci_config = qla2300_pci_config;
1380                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1381                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1382                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1383                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1384                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1385                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1386                 ha->gid_list_info_size = 6;
1387                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1388                         ha->optrom_size = OPTROM_SIZE_2322;
1389         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1390                 host->max_id = MAX_TARGETS_2200;
1391                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1392                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1393                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1394                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1395                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1396                 ha->mgmt_svr_loop_id = 10;
1397                 ha->isp_ops.pci_config = qla24xx_pci_config;
1398                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1399                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1400                 ha->isp_ops.config_rings = qla24xx_config_rings;
1401                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1402                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1403                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1404                 ha->isp_ops.load_risc = qla24xx_load_risc;
1405 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1406                 if (ql2xfwloadflash)
1407                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1408 #endif
1409                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1410                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1411                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1412                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1413                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1414                 ha->isp_ops.abort_command = qla24xx_abort_command;
1415                 ha->isp_ops.abort_target = qla24xx_abort_target;
1416                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1417                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1418                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1419                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1420                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1421                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1422                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1423                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1424                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1425                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1426                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1427                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1428                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1429                 ha->gid_list_info_size = 8;
1430                 ha->optrom_size = OPTROM_SIZE_24XX;
1431         }
1432         host->can_queue = ha->request_q_length + 128;
1433
1434         /* load the F/W, read paramaters, and init the H/W */
1435         ha->instance = num_hosts;
1436
1437         init_MUTEX(&ha->mbx_cmd_sem);
1438         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1439
1440         INIT_LIST_HEAD(&ha->list);
1441         INIT_LIST_HEAD(&ha->fcports);
1442         INIT_LIST_HEAD(&ha->rscn_fcports);
1443
1444         /*
1445          * These locks are used to prevent more than one CPU
1446          * from modifying the queue at the same time. The
1447          * higher level "host_lock" will reduce most
1448          * contention for these locks.
1449          */
1450         spin_lock_init(&ha->mbx_reg_lock);
1451
1452         init_completion(&ha->dpc_inited);
1453         init_completion(&ha->dpc_exited);
1454
1455         qla2x00_config_dma_addressing(ha);
1456         if (qla2x00_mem_alloc(ha)) {
1457                 qla_printk(KERN_WARNING, ha,
1458                     "[ERROR] Failed to allocate memory for adapter\n");
1459
1460                 ret = -ENOMEM;
1461                 goto probe_failed;
1462         }
1463
1464         if (qla2x00_initialize_adapter(ha) &&
1465             !(ha->device_flags & DFLG_NO_CABLE)) {
1466
1467                 qla_printk(KERN_WARNING, ha,
1468                     "Failed to initialize adapter\n");
1469
1470                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1471                     "Adapter flags %x.\n",
1472                     ha->host_no, ha->device_flags));
1473
1474                 ret = -ENODEV;
1475                 goto probe_failed;
1476         }
1477
1478         /*
1479          * Startup the kernel thread for this host adapter
1480          */
1481         ha->dpc_should_die = 0;
1482         ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1483         if (ha->dpc_pid < 0) {
1484                 qla_printk(KERN_WARNING, ha,
1485                     "Unable to start DPC thread!\n");
1486
1487                 ret = -ENODEV;
1488                 goto probe_failed;
1489         }
1490         wait_for_completion(&ha->dpc_inited);
1491
1492         host->this_id = 255;
1493         host->cmd_per_lun = 3;
1494         host->unique_id = ha->instance;
1495         host->max_cmd_len = MAX_CMDSZ;
1496         host->max_channel = ha->ports - 1;
1497         host->max_lun = MAX_LUNS;
1498         host->transportt = qla2xxx_transport_template;
1499
1500         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1501             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1502         if (ret) {
1503                 qla_printk(KERN_WARNING, ha,
1504                     "Failed to reserve interrupt %d already in use.\n",
1505                     pdev->irq);
1506                 goto probe_failed;
1507         }
1508         host->irq = pdev->irq;
1509
1510         /* Initialized the timer */
1511         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1512
1513         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1514             ha->host_no, ha));
1515
1516         ha->isp_ops.disable_intrs(ha);
1517
1518         spin_lock_irqsave(&ha->hardware_lock, flags);
1519         reg = ha->iobase;
1520         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1521                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1522                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1523         } else {
1524                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1525                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1526                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1527
1528                 /* Enable proper parity */
1529                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1530                         if (IS_QLA2300(ha))
1531                                 /* SRAM parity */
1532                                 WRT_REG_WORD(&reg->isp.hccr,
1533                                     (HCCR_ENABLE_PARITY + 0x1));
1534                         else
1535                                 /* SRAM, Instruction RAM and GP RAM parity */
1536                                 WRT_REG_WORD(&reg->isp.hccr,
1537                                     (HCCR_ENABLE_PARITY + 0x7));
1538                 }
1539         }
1540         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1541
1542         ha->isp_ops.enable_intrs(ha);
1543
1544         /* v2.19.5b6 */
1545         /*
1546          * Wait around max loop_reset_delay secs for the devices to come
1547          * on-line. We don't want Linux scanning before we are ready.
1548          *
1549          */
1550         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1551             time_before(jiffies,wait_switch) &&
1552              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1553              && (ha->device_flags & SWITCH_FOUND) ;) {
1554
1555                 qla2x00_check_fabric_devices(ha);
1556
1557                 msleep(10);
1558         }
1559
1560         pci_set_drvdata(pdev, ha);
1561         ha->flags.init_done = 1;
1562         num_hosts++;
1563
1564         ret = scsi_add_host(host, &pdev->dev);
1565         if (ret)
1566                 goto probe_failed;
1567
1568         qla2x00_alloc_sysfs_attr(ha);
1569
1570         qla2x00_init_host_attr(ha);
1571
1572         qla_printk(KERN_INFO, ha, "\n"
1573             " QLogic Fibre Channel HBA Driver: %s\n"
1574             "  QLogic %s - %s\n"
1575             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1576             qla2x00_version_str, ha->model_number,
1577             ha->model_desc ? ha->model_desc: "", pdev->device,
1578             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1579             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1580             ha->isp_ops.fw_version_str(ha, fw_str));
1581
1582         /* Go with fc_rport registration. */
1583         list_for_each_entry(fcport, &ha->fcports, list)
1584                 qla2x00_reg_remote_port(ha, fcport);
1585
1586         return 0;
1587
1588 probe_failed:
1589         qla2x00_free_device(ha);
1590
1591         scsi_host_put(host);
1592
1593 probe_disable_device:
1594         pci_disable_device(pdev);
1595
1596 probe_out:
1597         return ret;
1598 }
1599 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1600
1601 void qla2x00_remove_one(struct pci_dev *pdev)
1602 {
1603         scsi_qla_host_t *ha;
1604
1605         ha = pci_get_drvdata(pdev);
1606
1607         qla2x00_free_sysfs_attr(ha);
1608
1609         fc_remove_host(ha->host);
1610
1611         scsi_remove_host(ha->host);
1612
1613         qla2x00_free_device(ha);
1614
1615         scsi_host_put(ha->host);
1616
1617         pci_set_drvdata(pdev, NULL);
1618 }
1619 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1620
1621 static void
1622 qla2x00_free_device(scsi_qla_host_t *ha)
1623 {
1624         int ret;
1625
1626         /* Abort any outstanding IO descriptors. */
1627         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1628                 qla2x00_cancel_io_descriptors(ha);
1629
1630         /* Disable timer */
1631         if (ha->timer_active)
1632                 qla2x00_stop_timer(ha);
1633
1634         /* Kill the kernel thread for this host */
1635         if (ha->dpc_pid >= 0) {
1636                 ha->dpc_should_die = 1;
1637                 wmb();
1638                 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1639                 if (ret) {
1640                         qla_printk(KERN_ERR, ha,
1641                             "Unable to signal DPC thread -- (%d)\n", ret);
1642
1643                         /* TODO: SOMETHING MORE??? */
1644                 } else {
1645                         wait_for_completion(&ha->dpc_exited);
1646                 }
1647         }
1648
1649         /* Stop currently executing firmware. */
1650         qla2x00_stop_firmware(ha);
1651
1652         /* turn-off interrupts on the card */
1653         if (ha->interrupts_on)
1654                 ha->isp_ops.disable_intrs(ha);
1655
1656         qla2x00_mem_free(ha);
1657
1658         ha->flags.online = 0;
1659
1660         /* Detach interrupts */
1661         if (ha->pdev->irq)
1662                 free_irq(ha->pdev->irq, ha);
1663
1664         /* release io space registers  */
1665         if (ha->iobase)
1666                 iounmap(ha->iobase);
1667         pci_release_regions(ha->pdev);
1668
1669         pci_disable_device(ha->pdev);
1670 }
1671
1672 static inline void
1673 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1674     int defer)
1675 {
1676         unsigned long flags;
1677         struct fc_rport *rport;
1678
1679         if (!fcport->rport)
1680                 return;
1681
1682         rport = fcport->rport;
1683         if (defer) {
1684                 spin_lock_irqsave(&fcport->rport_lock, flags);
1685                 fcport->drport = rport;
1686                 fcport->rport = NULL;
1687                 *(fc_port_t **)rport->dd_data = NULL;
1688                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1689                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1690         } else {
1691                 spin_lock_irqsave(&fcport->rport_lock, flags);
1692                 fcport->rport = NULL;
1693                 *(fc_port_t **)rport->dd_data = NULL;
1694                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1695                 fc_remote_port_delete(rport);
1696         }
1697 }
1698
1699 /*
1700  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1701  *
1702  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1703  *
1704  * Return: None.
1705  *
1706  * Context:
1707  */
1708 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1709     int do_login, int defer)
1710 {
1711         if (atomic_read(&fcport->state) == FCS_ONLINE)
1712                 qla2x00_schedule_rport_del(ha, fcport, defer);
1713
1714         /*
1715          * We may need to retry the login, so don't change the state of the
1716          * port but do the retries.
1717          */
1718         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1719                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1720
1721         if (!do_login)
1722                 return;
1723
1724         if (fcport->login_retry == 0) {
1725                 fcport->login_retry = ha->login_retry_count;
1726                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1727
1728                 DEBUG(printk("scsi(%ld): Port login retry: "
1729                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1730                     "id = 0x%04x retry cnt=%d\n",
1731                     ha->host_no,
1732                     fcport->port_name[0],
1733                     fcport->port_name[1],
1734                     fcport->port_name[2],
1735                     fcport->port_name[3],
1736                     fcport->port_name[4],
1737                     fcport->port_name[5],
1738                     fcport->port_name[6],
1739                     fcport->port_name[7],
1740                     fcport->loop_id,
1741                     fcport->login_retry));
1742         }
1743 }
1744
1745 /*
1746  * qla2x00_mark_all_devices_lost
1747  *      Updates fcport state when device goes offline.
1748  *
1749  * Input:
1750  *      ha = adapter block pointer.
1751  *      fcport = port structure pointer.
1752  *
1753  * Return:
1754  *      None.
1755  *
1756  * Context:
1757  */
1758 void
1759 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1760 {
1761         fc_port_t *fcport;
1762
1763         list_for_each_entry(fcport, &ha->fcports, list) {
1764                 if (fcport->port_type != FCT_TARGET)
1765                         continue;
1766
1767                 /*
1768                  * No point in marking the device as lost, if the device is
1769                  * already DEAD.
1770                  */
1771                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1772                         continue;
1773                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1774                         qla2x00_schedule_rport_del(ha, fcport, defer);
1775                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1776         }
1777
1778         if (defer && ha->dpc_wait && !ha->dpc_active)
1779                 up(ha->dpc_wait);
1780 }
1781
1782 /*
1783 * qla2x00_mem_alloc
1784 *      Allocates adapter memory.
1785 *
1786 * Returns:
1787 *      0  = success.
1788 *      1  = failure.
1789 */
1790 static uint8_t
1791 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1792 {
1793         char    name[16];
1794         uint8_t   status = 1;
1795         int     retry= 10;
1796
1797         do {
1798                 /*
1799                  * This will loop only once if everything goes well, else some
1800                  * number of retries will be performed to get around a kernel
1801                  * bug where available mem is not allocated until after a
1802                  * little delay and a retry.
1803                  */
1804                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1805                     (ha->request_q_length + 1) * sizeof(request_t),
1806                     &ha->request_dma, GFP_KERNEL);
1807                 if (ha->request_ring == NULL) {
1808                         qla_printk(KERN_WARNING, ha,
1809                             "Memory Allocation failed - request_ring\n");
1810
1811                         qla2x00_mem_free(ha);
1812                         msleep(100);
1813
1814                         continue;
1815                 }
1816
1817                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1818                     (ha->response_q_length + 1) * sizeof(response_t),
1819                     &ha->response_dma, GFP_KERNEL);
1820                 if (ha->response_ring == NULL) {
1821                         qla_printk(KERN_WARNING, ha,
1822                             "Memory Allocation failed - response_ring\n");
1823
1824                         qla2x00_mem_free(ha);
1825                         msleep(100);
1826
1827                         continue;
1828                 }
1829
1830                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1831                     &ha->gid_list_dma, GFP_KERNEL);
1832                 if (ha->gid_list == NULL) {
1833                         qla_printk(KERN_WARNING, ha,
1834                             "Memory Allocation failed - gid_list\n");
1835
1836                         qla2x00_mem_free(ha);
1837                         msleep(100);
1838
1839                         continue;
1840                 }
1841
1842                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1843                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1844                 if (ha->rlc_rsp == NULL) {
1845                         qla_printk(KERN_WARNING, ha,
1846                                 "Memory Allocation failed - rlc");
1847
1848                         qla2x00_mem_free(ha);
1849                         msleep(100);
1850
1851                         continue;
1852                 }
1853
1854                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1855                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1856                     DMA_POOL_SIZE, 8, 0);
1857                 if (ha->s_dma_pool == NULL) {
1858                         qla_printk(KERN_WARNING, ha,
1859                             "Memory Allocation failed - s_dma_pool\n");
1860
1861                         qla2x00_mem_free(ha);
1862                         msleep(100);
1863
1864                         continue;
1865                 }
1866
1867                 /* get consistent memory allocated for init control block */
1868                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1869                     &ha->init_cb_dma);
1870                 if (ha->init_cb == NULL) {
1871                         qla_printk(KERN_WARNING, ha,
1872                             "Memory Allocation failed - init_cb\n");
1873
1874                         qla2x00_mem_free(ha);
1875                         msleep(100);
1876
1877                         continue;
1878                 }
1879                 memset(ha->init_cb, 0, ha->init_cb_size);
1880
1881                 /* Get consistent memory allocated for Get Port Database cmd */
1882                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1883                     &ha->iodesc_pd_dma);
1884                 if (ha->iodesc_pd == NULL) {
1885                         /* error */
1886                         qla_printk(KERN_WARNING, ha,
1887                             "Memory Allocation failed - iodesc_pd\n");
1888
1889                         qla2x00_mem_free(ha);
1890                         msleep(100);
1891
1892                         continue;
1893                 }
1894                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1895
1896                 /* Allocate ioctl related memory. */
1897                 if (qla2x00_alloc_ioctl_mem(ha)) {
1898                         qla_printk(KERN_WARNING, ha,
1899                             "Memory Allocation failed - ioctl_mem\n");
1900
1901                         qla2x00_mem_free(ha);
1902                         msleep(100);
1903
1904                         continue;
1905                 }
1906
1907                 if (qla2x00_allocate_sp_pool(ha)) {
1908                         qla_printk(KERN_WARNING, ha,
1909                             "Memory Allocation failed - "
1910                             "qla2x00_allocate_sp_pool()\n");
1911
1912                         qla2x00_mem_free(ha);
1913                         msleep(100);
1914
1915                         continue;
1916                 }
1917
1918                 /* Allocate memory for SNS commands */
1919                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1920                         /* Get consistent memory allocated for SNS commands */
1921                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1922                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1923                             GFP_KERNEL);
1924                         if (ha->sns_cmd == NULL) {
1925                                 /* error */
1926                                 qla_printk(KERN_WARNING, ha,
1927                                     "Memory Allocation failed - sns_cmd\n");
1928
1929                                 qla2x00_mem_free(ha);
1930                                 msleep(100);
1931
1932                                 continue;
1933                         }
1934                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1935                 } else {
1936                         /* Get consistent memory allocated for MS IOCB */
1937                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1938                             &ha->ms_iocb_dma);
1939                         if (ha->ms_iocb == NULL) {
1940                                 /* error */
1941                                 qla_printk(KERN_WARNING, ha,
1942                                     "Memory Allocation failed - ms_iocb\n");
1943
1944                                 qla2x00_mem_free(ha);
1945                                 msleep(100);
1946
1947                                 continue;
1948                         }
1949                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1950
1951                         /*
1952                          * Get consistent memory allocated for CT SNS
1953                          * commands
1954                          */
1955                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1956                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1957                             GFP_KERNEL);
1958                         if (ha->ct_sns == NULL) {
1959                                 /* error */
1960                                 qla_printk(KERN_WARNING, ha,
1961                                     "Memory Allocation failed - ct_sns\n");
1962
1963                                 qla2x00_mem_free(ha);
1964                                 msleep(100);
1965
1966                                 continue;
1967                         }
1968                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1969                 }
1970
1971                 /* Done all allocations without any error. */
1972                 status = 0;
1973
1974         } while (retry-- && status != 0);
1975
1976         if (status) {
1977                 printk(KERN_WARNING
1978                         "%s(): **** FAILED ****\n", __func__);
1979         }
1980
1981         return(status);
1982 }
1983
1984 /*
1985 * qla2x00_mem_free
1986 *      Frees all adapter allocated memory.
1987 *
1988 * Input:
1989 *      ha = adapter block pointer.
1990 */
1991 static void
1992 qla2x00_mem_free(scsi_qla_host_t *ha)
1993 {
1994         struct list_head        *fcpl, *fcptemp;
1995         fc_port_t       *fcport;
1996         unsigned int    wtime;/* max wait time if mbx cmd is busy. */
1997
1998         if (ha == NULL) {
1999                 /* error */
2000                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2001                 return;
2002         }
2003
2004         /* Make sure all other threads are stopped. */
2005         wtime = 60 * 1000;
2006         while (ha->dpc_wait && wtime)
2007                 wtime = msleep_interruptible(wtime);
2008
2009         /* free ioctl memory */
2010         qla2x00_free_ioctl_mem(ha);
2011
2012         /* free sp pool */
2013         qla2x00_free_sp_pool(ha);
2014
2015         if (ha->sns_cmd)
2016                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2017                     ha->sns_cmd, ha->sns_cmd_dma);
2018
2019         if (ha->ct_sns)
2020                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2021                     ha->ct_sns, ha->ct_sns_dma);
2022
2023         if (ha->ms_iocb)
2024                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2025
2026         if (ha->iodesc_pd)
2027                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2028
2029         if (ha->init_cb)
2030                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2031
2032         if (ha->s_dma_pool)
2033                 dma_pool_destroy(ha->s_dma_pool);
2034
2035         if (ha->rlc_rsp)
2036                 dma_free_coherent(&ha->pdev->dev,
2037                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2038                     ha->rlc_rsp_dma);
2039
2040         if (ha->gid_list)
2041                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2042                     ha->gid_list_dma);
2043
2044         if (ha->response_ring)
2045                 dma_free_coherent(&ha->pdev->dev,
2046                     (ha->response_q_length + 1) * sizeof(response_t),
2047                     ha->response_ring, ha->response_dma);
2048
2049         if (ha->request_ring)
2050                 dma_free_coherent(&ha->pdev->dev,
2051                     (ha->request_q_length + 1) * sizeof(request_t),
2052                     ha->request_ring, ha->request_dma);
2053
2054         ha->sns_cmd = NULL;
2055         ha->sns_cmd_dma = 0;
2056         ha->ct_sns = NULL;
2057         ha->ct_sns_dma = 0;
2058         ha->ms_iocb = NULL;
2059         ha->ms_iocb_dma = 0;
2060         ha->iodesc_pd = NULL;
2061         ha->iodesc_pd_dma = 0;
2062         ha->init_cb = NULL;
2063         ha->init_cb_dma = 0;
2064
2065         ha->s_dma_pool = NULL;
2066
2067         ha->rlc_rsp = NULL;
2068         ha->rlc_rsp_dma = 0;
2069         ha->gid_list = NULL;
2070         ha->gid_list_dma = 0;
2071
2072         ha->response_ring = NULL;
2073         ha->response_dma = 0;
2074         ha->request_ring = NULL;
2075         ha->request_dma = 0;
2076
2077         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2078                 fcport = list_entry(fcpl, fc_port_t, list);
2079
2080                 /* fc ports */
2081                 list_del_init(&fcport->list);
2082                 kfree(fcport);
2083         }
2084         INIT_LIST_HEAD(&ha->fcports);
2085
2086         if (ha->fw_dump)
2087                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2088
2089         vfree(ha->fw_dump24);
2090
2091         vfree(ha->fw_dump_buffer);
2092
2093         ha->fw_dump = NULL;
2094         ha->fw_dump24 = NULL;
2095         ha->fw_dumped = 0;
2096         ha->fw_dump_reading = 0;
2097         ha->fw_dump_buffer = NULL;
2098
2099         vfree(ha->optrom_buffer);
2100 }
2101
2102 /*
2103  * qla2x00_allocate_sp_pool
2104  *       This routine is called during initialization to allocate
2105  *       memory for local srb_t.
2106  *
2107  * Input:
2108  *       ha   = adapter block pointer.
2109  *
2110  * Context:
2111  *      Kernel context.
2112  *
2113  * Note: Sets the ref_count for non Null sp to one.
2114  */
2115 static int
2116 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2117 {
2118         int      rval;
2119
2120         rval = QLA_SUCCESS;
2121         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2122             mempool_free_slab, srb_cachep);
2123         if (ha->srb_mempool == NULL) {
2124                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2125                 rval = QLA_FUNCTION_FAILED;
2126         }
2127         return (rval);
2128 }
2129
2130 /*
2131  *  This routine frees all adapter allocated memory.
2132  *
2133  */
2134 static void
2135 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2136 {
2137         if (ha->srb_mempool) {
2138                 mempool_destroy(ha->srb_mempool);
2139                 ha->srb_mempool = NULL;
2140         }
2141 }
2142
2143 /**************************************************************************
2144 * qla2x00_do_dpc
2145 *   This kernel thread is a task that is schedule by the interrupt handler
2146 *   to perform the background processing for interrupts.
2147 *
2148 * Notes:
2149 * This task always run in the context of a kernel thread.  It
2150 * is kick-off by the driver's detect code and starts up
2151 * up one per adapter. It immediately goes to sleep and waits for
2152 * some fibre event.  When either the interrupt handler or
2153 * the timer routine detects a event it will one of the task
2154 * bits then wake us up.
2155 **************************************************************************/
2156 static int
2157 qla2x00_do_dpc(void *data)
2158 {
2159         DECLARE_MUTEX_LOCKED(sem);
2160         scsi_qla_host_t *ha;
2161         fc_port_t       *fcport;
2162         uint8_t         status;
2163         uint16_t        next_loopid;
2164
2165         ha = (scsi_qla_host_t *)data;
2166
2167         lock_kernel();
2168
2169         daemonize("%s_dpc", ha->host_str);
2170         allow_signal(SIGHUP);
2171
2172         ha->dpc_wait = &sem;
2173
2174         set_user_nice(current, -20);
2175
2176         unlock_kernel();
2177
2178         complete(&ha->dpc_inited);
2179
2180         while (1) {
2181                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2182
2183                 if (down_interruptible(&sem))
2184                         break;
2185
2186                 if (ha->dpc_should_die)
2187                         break;
2188
2189                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2190
2191                 /* Initialization not yet finished. Don't do anything yet. */
2192                 if (!ha->flags.init_done || ha->dpc_active)
2193                         continue;
2194
2195                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2196
2197                 ha->dpc_active = 1;
2198
2199                 if (ha->flags.mbox_busy) {
2200                         ha->dpc_active = 0;
2201                         continue;
2202                 }
2203
2204                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2205
2206                         DEBUG(printk("scsi(%ld): dpc: sched "
2207                             "qla2x00_abort_isp ha = %p\n",
2208                             ha->host_no, ha));
2209                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2210                             &ha->dpc_flags))) {
2211
2212                                 if (qla2x00_abort_isp(ha)) {
2213                                         /* failed. retry later */
2214                                         set_bit(ISP_ABORT_NEEDED,
2215                                             &ha->dpc_flags);
2216                                 }
2217                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2218                         }
2219                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2220                             ha->host_no));
2221                 }
2222
2223                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2224                         qla2x00_update_fcports(ha);
2225
2226                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2227                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2228                             ha->host_no));
2229                         qla2x00_loop_reset(ha);
2230                 }
2231
2232                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2233                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2234
2235                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2236                             ha->host_no));
2237
2238                         qla2x00_rst_aen(ha);
2239                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2240                 }
2241
2242                 /* Retry each device up to login retry count */
2243                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2244                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2245                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2246
2247                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2248                             ha->host_no));
2249
2250                         next_loopid = 0;
2251                         list_for_each_entry(fcport, &ha->fcports, list) {
2252                                 if (fcport->port_type != FCT_TARGET)
2253                                         continue;
2254
2255                                 /*
2256                                  * If the port is not ONLINE then try to login
2257                                  * to it if we haven't run out of retries.
2258                                  */
2259                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2260                                     fcport->login_retry) {
2261
2262                                         fcport->login_retry--;
2263                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2264                                                 if (fcport->flags &
2265                                                     FCF_TAPE_PRESENT)
2266                                                         ha->isp_ops.fabric_logout(
2267                                                             ha, fcport->loop_id,
2268                                                             fcport->d_id.b.domain,
2269                                                             fcport->d_id.b.area,
2270                                                             fcport->d_id.b.al_pa);
2271                                                 status = qla2x00_fabric_login(
2272                                                     ha, fcport, &next_loopid);
2273                                         } else
2274                                                 status =
2275                                                     qla2x00_local_device_login(
2276                                                         ha, fcport->loop_id);
2277
2278                                         if (status == QLA_SUCCESS) {
2279                                                 fcport->old_loop_id = fcport->loop_id;
2280
2281                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2282                                                     ha->host_no, fcport->loop_id));
2283
2284                                                 qla2x00_update_fcport(ha,
2285                                                     fcport);
2286                                         } else if (status == 1) {
2287                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2288                                                 /* retry the login again */
2289                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2290                                                     ha->host_no,
2291                                                     fcport->login_retry, fcport->loop_id));
2292                                         } else {
2293                                                 fcport->login_retry = 0;
2294                                         }
2295                                 }
2296                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2297                                         break;
2298                         }
2299                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2300                             ha->host_no));
2301                 }
2302
2303                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2304                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2305
2306                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2307                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2308                             ha->host_no));
2309
2310                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2311
2312                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2313                             ha->host_no));
2314                 }
2315
2316                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2317
2318                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2319                             ha->host_no));
2320
2321                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2322                             &ha->dpc_flags))) {
2323
2324                                 qla2x00_loop_resync(ha);
2325
2326                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2327                         }
2328
2329                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2330                             ha->host_no));
2331                 }
2332
2333                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2334
2335                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2336                             ha->host_no));
2337
2338                         qla2x00_rescan_fcports(ha);
2339
2340                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2341                             "end.\n",
2342                             ha->host_no));
2343                 }
2344
2345                 if (!ha->interrupts_on)
2346                         ha->isp_ops.enable_intrs(ha);
2347
2348                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2349                         ha->isp_ops.beacon_blink(ha);
2350
2351                 ha->dpc_active = 0;
2352         } /* End of while(1) */
2353
2354         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2355
2356         /*
2357          * Make sure that nobody tries to wake us up again.
2358          */
2359         ha->dpc_wait = NULL;
2360         ha->dpc_active = 0;
2361
2362         complete_and_exit(&ha->dpc_exited, 0);
2363 }
2364
2365 /*
2366 *  qla2x00_rst_aen
2367 *      Processes asynchronous reset.
2368 *
2369 * Input:
2370 *      ha  = adapter block pointer.
2371 */
2372 static void
2373 qla2x00_rst_aen(scsi_qla_host_t *ha)
2374 {
2375         if (ha->flags.online && !ha->flags.reset_active &&
2376             !atomic_read(&ha->loop_down_timer) &&
2377             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2378                 do {
2379                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2380
2381                         /*
2382                          * Issue marker command only when we are going to start
2383                          * the I/O.
2384                          */
2385                         ha->marker_needed = 1;
2386                 } while (!atomic_read(&ha->loop_down_timer) &&
2387                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2388         }
2389 }
2390
2391 static void
2392 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2393 {
2394         struct scsi_cmnd *cmd = sp->cmd;
2395
2396         if (sp->flags & SRB_DMA_VALID) {
2397                 if (cmd->use_sg) {
2398                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2399                             cmd->use_sg, cmd->sc_data_direction);
2400                 } else if (cmd->request_bufflen) {
2401                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2402                             cmd->request_bufflen, cmd->sc_data_direction);
2403                 }
2404                 sp->flags &= ~SRB_DMA_VALID;
2405         }
2406         CMD_SP(cmd) = NULL;
2407 }
2408
2409 void
2410 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2411 {
2412         struct scsi_cmnd *cmd = sp->cmd;
2413
2414         qla2x00_sp_free_dma(ha, sp);
2415
2416         mempool_free(sp, ha->srb_mempool);
2417
2418         cmd->scsi_done(cmd);
2419 }
2420
2421 /**************************************************************************
2422 *   qla2x00_timer
2423 *
2424 * Description:
2425 *   One second timer
2426 *
2427 * Context: Interrupt
2428 ***************************************************************************/
2429 static void
2430 qla2x00_timer(scsi_qla_host_t *ha)
2431 {
2432         unsigned long   cpu_flags = 0;
2433         fc_port_t       *fcport;
2434         int             start_dpc = 0;
2435         int             index;
2436         srb_t           *sp;
2437         int             t;
2438
2439         /*
2440          * Ports - Port down timer.
2441          *
2442          * Whenever, a port is in the LOST state we start decrementing its port
2443          * down timer every second until it reaches zero. Once  it reaches zero
2444          * the port it marked DEAD.
2445          */
2446         t = 0;
2447         list_for_each_entry(fcport, &ha->fcports, list) {
2448                 if (fcport->port_type != FCT_TARGET)
2449                         continue;
2450
2451                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2452
2453                         if (atomic_read(&fcport->port_down_timer) == 0)
2454                                 continue;
2455
2456                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2457                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2458
2459                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2460                             "%d remaining\n",
2461                             ha->host_no,
2462                             t, atomic_read(&fcport->port_down_timer)));
2463                 }
2464                 t++;
2465         } /* End of for fcport  */
2466
2467
2468         /* Loop down handler. */
2469         if (atomic_read(&ha->loop_down_timer) > 0 &&
2470             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2471
2472                 if (atomic_read(&ha->loop_down_timer) ==
2473                     ha->loop_down_abort_time) {
2474
2475                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2476                             "queues before time expire\n",
2477                             ha->host_no));
2478
2479                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2480                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2481
2482                         /* Schedule an ISP abort to return any tape commands. */
2483                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2484                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2485                             index++) {
2486                                 fc_port_t *sfcp;
2487
2488                                 sp = ha->outstanding_cmds[index];
2489                                 if (!sp)
2490                                         continue;
2491                                 sfcp = sp->fcport;
2492                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2493                                         continue;
2494
2495                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2496                                 break;
2497                         }
2498                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2499
2500                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2501                         start_dpc++;
2502                 }
2503
2504                 /* if the loop has been down for 4 minutes, reinit adapter */
2505                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2506                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2507                             "restarting queues.\n",
2508                             ha->host_no));
2509
2510                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2511                         start_dpc++;
2512
2513                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2514                                 DEBUG(printk("scsi(%ld): Loop down - "
2515                                     "aborting ISP.\n",
2516                                     ha->host_no));
2517                                 qla_printk(KERN_WARNING, ha,
2518                                     "Loop down - aborting ISP.\n");
2519
2520                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2521                         }
2522                 }
2523                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2524                     ha->host_no,
2525                     atomic_read(&ha->loop_down_timer)));
2526         }
2527
2528         /* Check if beacon LED needs to be blinked */
2529         if (ha->beacon_blink_led == 1) {
2530                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2531                 start_dpc++;
2532         }
2533
2534         /* Schedule the DPC routine if needed */
2535         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2536             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2537             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2538             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2539             start_dpc ||
2540             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2541             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2542             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2543             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2544             ha->dpc_wait && !ha->dpc_active) {
2545
2546                 up(ha->dpc_wait);
2547         }
2548
2549         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2550 }
2551
2552 /* XXX(hch): crude hack to emulate a down_timeout() */
2553 int
2554 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2555 {
2556         const unsigned int step = 100; /* msecs */
2557         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2558
2559         do {
2560                 if (!down_trylock(sema))
2561                         return 0;
2562                 if (msleep_interruptible(step))
2563                         break;
2564         } while (--iterations >= 0);
2565
2566         return -ETIMEDOUT;
2567 }
2568
2569 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2570
2571 #define qla2x00_release_firmware()      do { } while (0)
2572 #define qla2x00_pci_module_init()       (0)
2573 #define qla2x00_pci_module_exit()       do { } while (0)
2574
2575 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2576
2577 /* Firmware interface routines. */
2578
2579 #define FW_BLOBS        6
2580 #define FW_ISP21XX      0
2581 #define FW_ISP22XX      1
2582 #define FW_ISP2300      2
2583 #define FW_ISP2322      3
2584 #define FW_ISP63XX      4
2585 #define FW_ISP24XX      5
2586
2587 static DECLARE_MUTEX(qla_fw_lock);
2588
2589 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2590         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2591         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2592         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2593         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2594         { .name = "ql6312_fw.bin", .segs = { 0x800, 0 }, },
2595         { .name = "ql2400_fw.bin", },
2596 };
2597
2598 struct fw_blob *
2599 qla2x00_request_firmware(scsi_qla_host_t *ha)
2600 {
2601         struct fw_blob *blob;
2602
2603         blob = NULL;
2604         if (IS_QLA2100(ha)) {
2605                 blob = &qla_fw_blobs[FW_ISP21XX];
2606         } else if (IS_QLA2200(ha)) {
2607                 blob = &qla_fw_blobs[FW_ISP22XX];
2608         } else if (IS_QLA2300(ha) || IS_QLA2312(ha)) {
2609                 blob = &qla_fw_blobs[FW_ISP2300];
2610         } else if (IS_QLA2322(ha)) {
2611                 blob = &qla_fw_blobs[FW_ISP2322];
2612         } else if (IS_QLA6312(ha) || IS_QLA6322(ha)) {
2613                 blob = &qla_fw_blobs[FW_ISP63XX];
2614         } else if (IS_QLA24XX(ha)) {
2615                 blob = &qla_fw_blobs[FW_ISP24XX];
2616         }
2617
2618         down(&qla_fw_lock);
2619         if (blob->fw)
2620                 goto out;
2621
2622         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2623                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2624                     "(%s).\n", ha->host_no, blob->name));
2625                 blob->fw = NULL;
2626                 blob = NULL;
2627                 goto out;
2628         }
2629
2630 out:
2631         up(&qla_fw_lock);
2632         return blob;
2633 }
2634
2635 static void
2636 qla2x00_release_firmware(void)
2637 {
2638         int idx;
2639
2640         down(&qla_fw_lock);
2641         for (idx = 0; idx < FW_BLOBS; idx++)
2642                 if (qla_fw_blobs[idx].fw)
2643                         release_firmware(qla_fw_blobs[idx].fw);
2644         up(&qla_fw_lock);
2645 }
2646
2647 static struct qla_board_info qla_board_tbl = {
2648         .drv_name       = "qla2xxx",
2649 };
2650
2651 static struct pci_device_id qla2xxx_pci_tbl[] = {
2652         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2653                 PCI_ANY_ID, PCI_ANY_ID, },
2654         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2655                 PCI_ANY_ID, PCI_ANY_ID, },
2656         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2657                 PCI_ANY_ID, PCI_ANY_ID, },
2658         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2659                 PCI_ANY_ID, PCI_ANY_ID, },
2660         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2661                 PCI_ANY_ID, PCI_ANY_ID, },
2662         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2663                 PCI_ANY_ID, PCI_ANY_ID, },
2664         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2665                 PCI_ANY_ID, PCI_ANY_ID, },
2666         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2667                 PCI_ANY_ID, PCI_ANY_ID, },
2668         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2669                 PCI_ANY_ID, PCI_ANY_ID, },
2670         { 0 },
2671 };
2672 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2673
2674 static int __devinit
2675 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2676 {
2677         return qla2x00_probe_one(pdev, &qla_board_tbl);
2678 }
2679
2680 static void __devexit
2681 qla2xxx_remove_one(struct pci_dev *pdev)
2682 {
2683         qla2x00_remove_one(pdev);
2684 }
2685
2686 static struct pci_driver qla2xxx_pci_driver = {
2687         .name           = "qla2xxx",
2688         .driver         = {
2689                 .owner          = THIS_MODULE,
2690         },
2691         .id_table       = qla2xxx_pci_tbl,
2692         .probe          = qla2xxx_probe_one,
2693         .remove         = __devexit_p(qla2xxx_remove_one),
2694 };
2695
2696 static inline int
2697 qla2x00_pci_module_init(void)
2698 {
2699         return pci_module_init(&qla2xxx_pci_driver);
2700 }
2701
2702 static inline void
2703 qla2x00_pci_module_exit(void)
2704 {
2705         pci_unregister_driver(&qla2xxx_pci_driver);
2706 }
2707
2708 #endif
2709
2710 /**
2711  * qla2x00_module_init - Module initialization.
2712  **/
2713 static int __init
2714 qla2x00_module_init(void)
2715 {
2716         int ret = 0;
2717
2718         /* Allocate cache for SRBs. */
2719         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2720             SLAB_HWCACHE_ALIGN, NULL, NULL);
2721         if (srb_cachep == NULL) {
2722                 printk(KERN_ERR
2723                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2724                 return -ENOMEM;
2725         }
2726
2727         /* Derive version string. */
2728         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2729 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2730         strcat(qla2x00_version_str, "-fw");
2731 #endif
2732 #if DEBUG_QLA2100
2733         strcat(qla2x00_version_str, "-debug");
2734 #endif
2735         qla2xxx_transport_template =
2736             fc_attach_transport(&qla2xxx_transport_functions);
2737         if (!qla2xxx_transport_template)
2738                 return -ENODEV;
2739
2740         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2741         ret = qla2x00_pci_module_init();
2742         if (ret) {
2743                 kmem_cache_destroy(srb_cachep);
2744                 fc_release_transport(qla2xxx_transport_template);
2745         }
2746         return ret;
2747 }
2748
2749 /**
2750  * qla2x00_module_exit - Module cleanup.
2751  **/
2752 static void __exit
2753 qla2x00_module_exit(void)
2754 {
2755         qla2x00_pci_module_exit();
2756         qla2x00_release_firmware();
2757         kmem_cache_destroy(srb_cachep);
2758         fc_release_transport(qla2xxx_transport_template);
2759 }
2760
2761 module_init(qla2x00_module_init);
2762 module_exit(qla2x00_module_exit);
2763
2764 MODULE_AUTHOR("QLogic Corporation");
2765 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2766 MODULE_LICENSE("GPL");
2767 MODULE_VERSION(QLA2XXX_VERSION);