drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  *                  QLOGIC LINUX SOFTWARE
   3  *
   4  * QLogic ISP2x00 device driver for Linux 2.6.x
   5  * Copyright (C) 2003-2005 QLogic Corporation
   6  * (www.qlogic.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  */
  19 #include "qla_def.h"
  20
  21 #include <linux/moduleparam.h>
  22 #include <linux/vmalloc.h>
  23 #include <linux/smp_lock.h>
  24 #include <linux/delay.h>
  25
  26 #include <scsi/scsi_tcq.h>
  27 #include <scsi/scsicam.h>
  28 #include <scsi/scsi_transport.h>
  29 #include <scsi/scsi_transport_fc.h>
  30
  31 /*
  32  * Driver version
  33  */
  34 char qla2x00_version_str[40];
  35
  36 /*
  37  * SRB allocation cache
  38  */
  39 static kmem_cache_t *srb_cachep;
  40
  41 /*
  42  * Ioctl related information.
  43  */
  44 static int num_hosts;
  45
  46 int ql2xlogintimeout = 20;
  47 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  48 MODULE_PARM_DESC(ql2xlogintimeout,
  49                 "Login timeout value in seconds.");
  50
  51 int qlport_down_retry = 30;
  52 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  53 MODULE_PARM_DESC(qlport_down_retry,
  54                 "Maximum number of command retries to a port that returns"
  55                 "a PORT-DOWN status.");
  56
  57 int ql2xplogiabsentdevice;
  58 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  60                 "Option to enable PLOGI to devices that are not present after "
  61                 "a Fabric scan.  This is needed for several broken switches."
  62                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  63
  64 int ql2xenablezio = 0;
  65 module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
  66 MODULE_PARM_DESC(ql2xenablezio,
  67                 "Option to enable ZIO:If 1 then enable it otherwise"
  68                 " use the default set in the NVRAM."
  69                 " Default is 0 : disabled");
  70
  71 int ql2xintrdelaytimer = 10;
  72 module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
  73 MODULE_PARM_DESC(ql2xintrdelaytimer,
  74                 "ZIO: Waiting time for Firmware before it generates an "
  75                 "interrupt to the host to notify completion of request.");
  76
  77 int ql2xloginretrycount = 0;
  78 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  79 MODULE_PARM_DESC(ql2xloginretrycount,
  80                 "Specify an alternate value for the NVRAM login retry count.");
  81
  82 int ql2xfwloadbin;
  83 module_param(ql2xfwloadbin, int, S_IRUGO|S_IRUSR);
  84 MODULE_PARM_DESC(ql2xfwloadbin,
  85                 "Load ISP2xxx firmware image via hotplug.");
  86
  87 static void qla2x00_free_device(scsi_qla_host_t *);
  88
  89 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  90
  91 int ql2xfdmienable;
  92 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  93 MODULE_PARM_DESC(ql2xfdmienable,
  94                 "Enables FDMI registratons "
  95                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  96
  97 /*
  98  * SCSI host template entry points
  99  */
 100 static int qla2xxx_slave_configure(struct scsi_device * device);
 101 static int qla2xxx_slave_alloc(struct scsi_device *);
 102 static void qla2xxx_slave_destroy(struct scsi_device *);
 103 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 104                 void (*fn)(struct scsi_cmnd *));
 105 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 106                 void (*fn)(struct scsi_cmnd *));
 107 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 108 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 109 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 110 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 111 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
 112 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 113
 114 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 115 static int qla2x00_change_queue_type(struct scsi_device *, int);
 116
 117 static struct scsi_host_template qla2x00_driver_template = {
 118         .module                 = THIS_MODULE,
 119         .name                   = "qla2xxx",
 120         .queuecommand           = qla2x00_queuecommand,
 121
 122         .eh_abort_handler       = qla2xxx_eh_abort,
 123         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 124         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 125         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 126
 127         .slave_configure        = qla2xxx_slave_configure,
 128
 129         .slave_alloc            = qla2xxx_slave_alloc,
 130         .slave_destroy          = qla2xxx_slave_destroy,
 131         .change_queue_depth     = qla2x00_change_queue_depth,
 132         .change_queue_type      = qla2x00_change_queue_type,
 133         .this_id                = -1,
 134         .cmd_per_lun            = 3,
 135         .use_clustering         = ENABLE_CLUSTERING,
 136         .sg_tablesize           = SG_ALL,
 137
 138         /*
 139          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 140          * which equates to 0x800000 sectors.
 141          */
 142         .max_sectors            = 0xFFFF,
 143         .shost_attrs            = qla2x00_host_attrs,
 144 };
 145
 146 static struct scsi_host_template qla24xx_driver_template = {
 147         .module                 = THIS_MODULE,
 148         .name                   = "qla2xxx",
 149         .queuecommand           = qla24xx_queuecommand,
 150
 151         .eh_abort_handler       = qla2xxx_eh_abort,
 152         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 153         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 154         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 155
 156         .slave_configure        = qla2xxx_slave_configure,
 157
 158         .slave_alloc            = qla2xxx_slave_alloc,
 159         .slave_destroy          = qla2xxx_slave_destroy,
 160         .change_queue_depth     = qla2x00_change_queue_depth,
 161         .change_queue_type      = qla2x00_change_queue_type,
 162         .this_id                = -1,
 163         .cmd_per_lun            = 3,
 164         .use_clustering         = ENABLE_CLUSTERING,
 165         .sg_tablesize           = SG_ALL,
 166
 167         .max_sectors            = 0xFFFF,
 168         .shost_attrs            = qla2x00_host_attrs,
 169 };
 170
 171 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 172
 173 /* TODO Convert to inlines
 174  *
 175  * Timer routines
 176  */
 177 #define WATCH_INTERVAL          1       /* number of seconds */
 178
 179 static void qla2x00_timer(scsi_qla_host_t *);
 180
 181 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 182     void *, unsigned long);
 183 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 184 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 185
 186 static inline void
 187 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 188 {
 189         init_timer(&ha->timer);
 190         ha->timer.expires = jiffies + interval * HZ;
 191         ha->timer.data = (unsigned long)ha;
 192         ha->timer.function = (void (*)(unsigned long))func;
 193         add_timer(&ha->timer);
 194         ha->timer_active = 1;
 195 }
 196
 197 static inline void
 198 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 199 {
 200         mod_timer(&ha->timer, jiffies + interval * HZ);
 201 }
 202
 203 static __inline__ void
 204 qla2x00_stop_timer(scsi_qla_host_t *ha)
 205 {
 206         del_timer_sync(&ha->timer);
 207         ha->timer_active = 0;
 208 }
 209
 210 static int qla2x00_do_dpc(void *data);
 211
 212 static void qla2x00_rst_aen(scsi_qla_host_t *);
 213
 214 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 215 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 216 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 217 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 218 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 219 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 220
 221 /* -------------------------------------------------------------------------- */
 222
 223 static char *
 224 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 225 {
 226         static char *pci_bus_modes[] = {
 227                 "33", "66", "100", "133",
 228         };
 229         uint16_t pci_bus;
 230
 231         strcpy(str, "PCI");
 232         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 233         if (pci_bus) {
 234                 strcat(str, "-X (");
 235                 strcat(str, pci_bus_modes[pci_bus]);
 236         } else {
 237                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 238                 strcat(str, " (");
 239                 strcat(str, pci_bus_modes[pci_bus]);
 240         }
 241         strcat(str, " MHz)");
 242
 243         return (str);
 244 }
 245
 246 static char *
 247 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 248 {
 249         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 250         uint32_t pci_bus;
 251         int pcie_reg;
 252
 253         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 254         if (pcie_reg) {
 255                 char lwstr[6];
 256                 uint16_t pcie_lstat, lspeed, lwidth;
 257
 258                 pcie_reg += 0x12;
 259                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 260                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 261                 lwidth = (pcie_lstat &
 262                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 263
 264                 strcpy(str, "PCIe (");
 265                 if (lspeed == 1)
 266                         strcat(str, "2.5Gb/s ");
 267                 else
 268                         strcat(str, "<unknown> ");
 269                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 270                 strcat(str, lwstr);
 271
 272                 return str;
 273         }
 274
 275         strcpy(str, "PCI");
 276         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 277         if (pci_bus == 0 || pci_bus == 8) {
 278                 strcat(str, " (");
 279                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 280         } else {
 281                 strcat(str, "-X ");
 282                 if (pci_bus & BIT_2)
 283                         strcat(str, "Mode 2");
 284                 else
 285                         strcat(str, "Mode 1");
 286                 strcat(str, " (");
 287                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 288         }
 289         strcat(str, " MHz)");
 290
 291         return str;
 292 }
 293
 294 char *
 295 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 296 {
 297         char un_str[10];
 298
 299         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 300             ha->fw_minor_version,
 301             ha->fw_subminor_version);
 302
 303         if (ha->fw_attributes & BIT_9) {
 304                 strcat(str, "FLX");
 305                 return (str);
 306         }
 307
 308         switch (ha->fw_attributes & 0xFF) {
 309         case 0x7:
 310                 strcat(str, "EF");
 311                 break;
 312         case 0x17:
 313                 strcat(str, "TP");
 314                 break;
 315         case 0x37:
 316                 strcat(str, "IP");
 317                 break;
 318         case 0x77:
 319                 strcat(str, "VI");
 320                 break;
 321         default:
 322                 sprintf(un_str, "(%x)", ha->fw_attributes);
 323                 strcat(str, un_str);
 324                 break;
 325         }
 326         if (ha->fw_attributes & 0x100)
 327                 strcat(str, "X");
 328
 329         return (str);
 330 }
 331
 332 char *
 333 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 334 {
 335         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 336             ha->fw_minor_version,
 337             ha->fw_subminor_version);
 338
 339         if (ha->fw_attributes & BIT_0)
 340                 strcat(str, "[Class 2] ");
 341         if (ha->fw_attributes & BIT_1)
 342                 strcat(str, "[IP] ");
 343         if (ha->fw_attributes & BIT_2)
 344                 strcat(str, "[Multi-ID] ");
 345         if (ha->fw_attributes & BIT_13)
 346                 strcat(str, "[Experimental]");
 347         return str;
 348 }
 349
 350 static inline srb_t *
 351 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 352     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 353 {
 354         srb_t *sp;
 355
 356         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 357         if (!sp)
 358                 return sp;
 359
 360         atomic_set(&sp->ref_count, 1);
 361         sp->ha = ha;
 362         sp->fcport = fcport;
 363         sp->cmd = cmd;
 364         sp->flags = 0;
 365         CMD_SP(cmd) = (void *)sp;
 366         cmd->scsi_done = done;
 367
 368         return sp;
 369 }
 370
 371 static int
 372 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 373 {
 374         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 375         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 376         srb_t *sp;
 377         int rval;
 378
 379         if (!fcport) {
 380                 cmd->result = DID_NO_CONNECT << 16;
 381                 goto qc_fail_command;
 382         }
 383
 384         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 385                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 386                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 387                         cmd->result = DID_NO_CONNECT << 16;
 388                         goto qc_fail_command;
 389                 }
 390                 goto qc_host_busy;
 391         }
 392
 393         spin_unlock_irq(ha->host->host_lock);
 394
 395         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 396         if (!sp)
 397                 goto qc_host_busy_lock;
 398
 399         rval = qla2x00_start_scsi(sp);
 400         if (rval != QLA_SUCCESS)
 401                 goto qc_host_busy_free_sp;
 402
 403         /* Manage unprocessed RIO/ZIO commands in response queue. */
 404         if (ha->flags.online && ha->flags.process_response_queue &&
 405             ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
 406                 unsigned long flags;
 407
 408                 spin_lock_irqsave(&ha->hardware_lock, flags);
 409                 qla2x00_process_response_queue(ha);
 410                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 411         }
 412
 413         spin_lock_irq(ha->host->host_lock);
 414
 415         return 0;
 416
 417 qc_host_busy_free_sp:
 418         qla2x00_sp_free_dma(ha, sp);
 419         mempool_free(sp, ha->srb_mempool);
 420
 421 qc_host_busy_lock:
 422         spin_lock_irq(ha->host->host_lock);
 423
 424 qc_host_busy:
 425         return SCSI_MLQUEUE_HOST_BUSY;
 426
 427 qc_fail_command:
 428         done(cmd);
 429
 430         return 0;
 431 }
 432
 433
 434 static int
 435 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 436 {
 437         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 438         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 439         srb_t *sp;
 440         int rval;
 441
 442         if (!fcport) {
 443                 cmd->result = DID_NO_CONNECT << 16;
 444                 goto qc24_fail_command;
 445         }
 446
 447         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 448                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 449                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 450                         cmd->result = DID_NO_CONNECT << 16;
 451                         goto qc24_fail_command;
 452                 }
 453                 goto qc24_host_busy;
 454         }
 455
 456         spin_unlock_irq(ha->host->host_lock);
 457
 458         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 459         if (!sp)
 460                 goto qc24_host_busy_lock;
 461
 462         rval = qla24xx_start_scsi(sp);
 463         if (rval != QLA_SUCCESS)
 464                 goto qc24_host_busy_free_sp;
 465
 466         spin_lock_irq(ha->host->host_lock);
 467
 468         return 0;
 469
 470 qc24_host_busy_free_sp:
 471         qla2x00_sp_free_dma(ha, sp);
 472         mempool_free(sp, ha->srb_mempool);
 473
 474 qc24_host_busy_lock:
 475         spin_lock_irq(ha->host->host_lock);
 476
 477 qc24_host_busy:
 478         return SCSI_MLQUEUE_HOST_BUSY;
 479
 480 qc24_fail_command:
 481         done(cmd);
 482
 483         return 0;
 484 }
 485
 486
 487 /*
 488  * qla2x00_eh_wait_on_command
 489  *    Waits for the command to be returned by the Firmware for some
 490  *    max time.
 491  *
 492  * Input:
 493  *    ha = actual ha whose done queue will contain the command
 494  *            returned by firmware.
 495  *    cmd = Scsi Command to wait on.
 496  *    flag = Abort/Reset(Bus or Device Reset)
 497  *
 498  * Return:
 499  *    Not Found : 0
 500  *    Found : 1
 501  */
 502 static int
 503 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 504 {
 505 #define ABORT_POLLING_PERIOD    HZ
 506 #define ABORT_WAIT_ITER         ((10 * HZ) / (ABORT_POLLING_PERIOD))
 507         unsigned long wait_iter = ABORT_WAIT_ITER;
 508         int ret = QLA_SUCCESS;
 509
 510         while (CMD_SP(cmd)) {
 511                 set_current_state(TASK_UNINTERRUPTIBLE);
 512                 schedule_timeout(ABORT_POLLING_PERIOD);
 513
 514                 if (--wait_iter)
 515                         break;
 516         }
 517         if (CMD_SP(cmd))
 518                 ret = QLA_FUNCTION_FAILED;
 519
 520         return ret;
 521 }
 522
 523 /*
 524  * qla2x00_wait_for_hba_online
 525  *    Wait till the HBA is online after going through
 526  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 527  *    finally HBA is disabled ie marked offline
 528  *
 529  * Input:
 530  *     ha - pointer to host adapter structure
 531  *
 532  * Note:
 533  *    Does context switching-Release SPIN_LOCK
 534  *    (if any) before calling this routine.
 535  *
 536  * Return:
 537  *    Success (Adapter is online) : 0
 538  *    Failed  (Adapter is offline/disabled) : 1
 539  */
 540 static int
 541 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 542 {
 543         int             return_status;
 544         unsigned long   wait_online;
 545
 546         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 547         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 548             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 549             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 550             ha->dpc_active) && time_before(jiffies, wait_online)) {
 551
 552                 msleep(1000);
 553         }
 554         if (ha->flags.online)
 555                 return_status = QLA_SUCCESS;
 556         else
 557                 return_status = QLA_FUNCTION_FAILED;
 558
 559         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 560
 561         return (return_status);
 562 }
 563
 564 /*
 565  * qla2x00_wait_for_loop_ready
 566  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 567  *    to be in LOOP_READY state.
 568  * Input:
 569  *     ha - pointer to host adapter structure
 570  *
 571  * Note:
 572  *    Does context switching-Release SPIN_LOCK
 573  *    (if any) before calling this routine.
 574  *
 575  *
 576  * Return:
 577  *    Success (LOOP_READY) : 0
 578  *    Failed  (LOOP_NOT_READY) : 1
 579  */
 580 static inline int
 581 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 582 {
 583         int      return_status = QLA_SUCCESS;
 584         unsigned long loop_timeout ;
 585
 586         /* wait for 5 min at the max for loop to be ready */
 587         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 588
 589         while ((!atomic_read(&ha->loop_down_timer) &&
 590             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 591             atomic_read(&ha->loop_state) != LOOP_READY) {
 592                 msleep(1000);
 593                 if (time_after_eq(jiffies, loop_timeout)) {
 594                         return_status = QLA_FUNCTION_FAILED;
 595                         break;
 596                 }
 597         }
 598         return (return_status);
 599 }
 600
 601 /**************************************************************************
 602 * qla2xxx_eh_abort
 603 *
 604 * Description:
 605 *    The abort function will abort the specified command.
 606 *
 607 * Input:
 608 *    cmd = Linux SCSI command packet to be aborted.
 609 *
 610 * Returns:
 611 *    Either SUCCESS or FAILED.
 612 *
 613 * Note:
 614 **************************************************************************/
 615 int
 616 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 617 {
 618         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 619         srb_t *sp;
 620         int ret, i;
 621         unsigned int id, lun;
 622         unsigned long serial;
 623         unsigned long flags;
 624
 625         if (!CMD_SP(cmd))
 626                 return FAILED;
 627
 628         ret = FAILED;
 629
 630         id = cmd->device->id;
 631         lun = cmd->device->lun;
 632         serial = cmd->serial_number;
 633
 634         /* Check active list for command command. */
 635         spin_lock_irqsave(&ha->hardware_lock, flags);
 636         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 637                 sp = ha->outstanding_cmds[i];
 638
 639                 if (sp == NULL)
 640                         continue;
 641
 642                 if (sp->cmd != cmd)
 643                         continue;
 644
 645                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 646                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 647                     sp->state));
 648                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 649
 650                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 651                 if (ha->isp_ops.abort_command(ha, sp)) {
 652                         DEBUG2(printk("%s(%ld): abort_command "
 653                             "mbx failed.\n", __func__, ha->host_no));
 654                 } else {
 655                         DEBUG3(printk("%s(%ld): abort_command "
 656                             "mbx success.\n", __func__, ha->host_no));
 657                         ret = SUCCESS;
 658                 }
 659                 spin_lock_irqsave(&ha->hardware_lock, flags);
 660
 661                 break;
 662         }
 663         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 664
 665         /* Wait for the command to be returned. */
 666         if (ret == SUCCESS) {
 667                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 668                         qla_printk(KERN_ERR, ha,
 669                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 670                             "%x.\n", ha->host_no, id, lun, serial, ret);
 671                 }
 672         }
 673
 674         qla_printk(KERN_INFO, ha,
 675             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 676             id, lun, serial, ret);
 677
 678         return ret;
 679 }
 680
 681 /**************************************************************************
 682 * qla2x00_eh_wait_for_pending_target_commands
 683 *
 684 * Description:
 685 *    Waits for all the commands to come back from the specified target.
 686 *
 687 * Input:
 688 *    ha - pointer to scsi_qla_host structure.
 689 *    t  - target
 690 * Returns:
 691 *    Either SUCCESS or FAILED.
 692 *
 693 * Note:
 694 **************************************************************************/
 695 static int
 696 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 697 {
 698         int     cnt;
 699         int     status;
 700         srb_t           *sp;
 701         struct scsi_cmnd *cmd;
 702         unsigned long flags;
 703
 704         status = 0;
 705
 706         /*
 707          * Waiting for all commands for the designated target in the active
 708          * array
 709          */
 710         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 711                 spin_lock_irqsave(&ha->hardware_lock, flags);
 712                 sp = ha->outstanding_cmds[cnt];
 713                 if (sp) {
 714                         cmd = sp->cmd;
 715                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 716                         if (cmd->device->id == t) {
 717                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 718                                         status = 1;
 719                                         break;
 720                                 }
 721                         }
 722                 } else {
 723                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 724                 }
 725         }
 726         return (status);
 727 }
 728
 729
 730 /**************************************************************************
 731 * qla2xxx_eh_device_reset
 732 *
 733 * Description:
 734 *    The device reset function will reset the target and abort any
 735 *    executing commands.
 736 *
 737 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 738 *          attempt to use this value, even if you determine it is
 739 *          non-null.
 740 *
 741 * Input:
 742 *    cmd = Linux SCSI command packet of the command that cause the
 743 *          bus device reset.
 744 *
 745 * Returns:
 746 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 747 *
 748 **************************************************************************/
 749 int
 750 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 751 {
 752         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 753         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 754         srb_t *sp;
 755         int ret;
 756         unsigned int id, lun;
 757         unsigned long serial;
 758
 759         ret = FAILED;
 760
 761         id = cmd->device->id;
 762         lun = cmd->device->lun;
 763         serial = cmd->serial_number;
 764
 765         sp = (srb_t *) CMD_SP(cmd);
 766         if (!sp || !fcport)
 767                 return ret;
 768
 769         qla_printk(KERN_INFO, ha,
 770             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 771
 772         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 773                 goto eh_dev_reset_done;
 774
 775         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 776                 if (qla2x00_device_reset(ha, fcport) == 0)
 777                         ret = SUCCESS;
 778
 779 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 780                 if (ret == SUCCESS) {
 781                         if (fcport->flags & FC_FABRIC_DEVICE) {
 782                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 783                                 qla2x00_mark_device_lost(ha, fcport);
 784                         }
 785                 }
 786 #endif
 787         } else {
 788                 DEBUG2(printk(KERN_INFO
 789                     "%s failed: loop not ready\n",__func__);)
 790         }
 791
 792         if (ret == FAILED) {
 793                 DEBUG3(printk("%s(%ld): device reset failed\n",
 794                     __func__, ha->host_no));
 795                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 796                     __func__);
 797
 798                 goto eh_dev_reset_done;
 799         }
 800
 801         /*
 802          * If we are coming down the EH path, wait for all commands to
 803          * complete for the device.
 804          */
 805         if (cmd->device->host->eh_active) {
 806                 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 807                         ret = FAILED;
 808
 809                 if (ret == FAILED) {
 810                         DEBUG3(printk("%s(%ld): failed while waiting for "
 811                             "commands\n", __func__, ha->host_no));
 812                         qla_printk(KERN_INFO, ha,
 813                             "%s: failed while waiting for commands\n",
 814                             __func__);
 815
 816                         goto eh_dev_reset_done;
 817                 }
 818         }
 819
 820         qla_printk(KERN_INFO, ha,
 821             "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
 822
 823 eh_dev_reset_done:
 824         return ret;
 825 }
 826
 827 /**************************************************************************
 828 * qla2x00_eh_wait_for_pending_commands
 829 *
 830 * Description:
 831 *    Waits for all the commands to come back from the specified host.
 832 *
 833 * Input:
 834 *    ha - pointer to scsi_qla_host structure.
 835 *
 836 * Returns:
 837 *    1 : SUCCESS
 838 *    0 : FAILED
 839 *
 840 * Note:
 841 **************************************************************************/
 842 static int
 843 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 844 {
 845         int     cnt;
 846         int     status;
 847         srb_t           *sp;
 848         struct scsi_cmnd *cmd;
 849         unsigned long flags;
 850
 851         status = 1;
 852
 853         /*
 854          * Waiting for all commands for the designated target in the active
 855          * array
 856          */
 857         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 858                 spin_lock_irqsave(&ha->hardware_lock, flags);
 859                 sp = ha->outstanding_cmds[cnt];
 860                 if (sp) {
 861                         cmd = sp->cmd;
 862                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 863                         status = qla2x00_eh_wait_on_command(ha, cmd);
 864                         if (status == 0)
 865                                 break;
 866                 }
 867                 else {
 868                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 869                 }
 870         }
 871         return (status);
 872 }
 873
 874
 875 /**************************************************************************
 876 * qla2xxx_eh_bus_reset
 877 *
 878 * Description:
 879 *    The bus reset function will reset the bus and abort any executing
 880 *    commands.
 881 *
 882 * Input:
 883 *    cmd = Linux SCSI command packet of the command that cause the
 884 *          bus reset.
 885 *
 886 * Returns:
 887 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 888 *
 889 **************************************************************************/
 890 int
 891 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 892 {
 893         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 894         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 895         srb_t *sp;
 896         int ret;
 897         unsigned int id, lun;
 898         unsigned long serial;
 899
 900         ret = FAILED;
 901
 902         id = cmd->device->id;
 903         lun = cmd->device->lun;
 904         serial = cmd->serial_number;
 905
 906         sp = (srb_t *) CMD_SP(cmd);
 907         if (!sp || !fcport)
 908                 return ret;
 909
 910         qla_printk(KERN_INFO, ha,
 911             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 912
 913         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 914                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 915                 goto eh_bus_reset_done;
 916         }
 917
 918         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 919                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 920                         ret = SUCCESS;
 921         }
 922         if (ret == FAILED)
 923                 goto eh_bus_reset_done;
 924
 925         /* Waiting for our command in done_queue to be returned to OS.*/
 926         if (cmd->device->host->eh_active)
 927                 if (!qla2x00_eh_wait_for_pending_commands(ha))
 928                         ret = FAILED;
 929
 930 eh_bus_reset_done:
 931         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 932             (ret == FAILED) ? "failed" : "succeded");
 933
 934         return ret;
 935 }
 936
 937 /**************************************************************************
 938 * qla2xxx_eh_host_reset
 939 *
 940 * Description:
 941 *    The reset function will reset the Adapter.
 942 *
 943 * Input:
 944 *      cmd = Linux SCSI command packet of the command that cause the
 945 *            adapter reset.
 946 *
 947 * Returns:
 948 *      Either SUCCESS or FAILED.
 949 *
 950 * Note:
 951 **************************************************************************/
 952 int
 953 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 954 {
 955         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 956         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 957         srb_t *sp;
 958         int ret;
 959         unsigned int id, lun;
 960         unsigned long serial;
 961
 962         ret = FAILED;
 963
 964         id = cmd->device->id;
 965         lun = cmd->device->lun;
 966         serial = cmd->serial_number;
 967
 968         sp = (srb_t *) CMD_SP(cmd);
 969         if (!sp || !fcport)
 970                 return ret;
 971
 972         qla_printk(KERN_INFO, ha,
 973             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 974
 975         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 976                 goto eh_host_reset_lock;
 977
 978         /*
 979          * Fixme-may be dpc thread is active and processing
 980          * loop_resync,so wait a while for it to
 981          * be completed and then issue big hammer.Otherwise
 982          * it may cause I/O failure as big hammer marks the
 983          * devices as lost kicking of the port_down_timer
 984          * while dpc is stuck for the mailbox to complete.
 985          */
 986         qla2x00_wait_for_loop_ready(ha);
 987         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 988         if (qla2x00_abort_isp(ha)) {
 989                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 990                 /* failed. schedule dpc to try */
 991                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 992
 993                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 994                         goto eh_host_reset_lock;
 995         }
 996         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 997
 998         /* Waiting for our command in done_queue to be returned to OS.*/
 999         if (qla2x00_eh_wait_for_pending_commands(ha))
1000                 ret = SUCCESS;
1001
1002 eh_host_reset_lock:
1003         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1004             (ret == FAILED) ? "failed" : "succeded");
1005
1006         return ret;
1007 }
1008
1009 /*
1010 * qla2x00_loop_reset
1011 *      Issue loop reset.
1012 *
1013 * Input:
1014 *      ha = adapter block pointer.
1015 *
1016 * Returns:
1017 *      0 = success
1018 */
1019 static int
1020 qla2x00_loop_reset(scsi_qla_host_t *ha)
1021 {
1022         int status = QLA_SUCCESS;
1023         struct fc_port *fcport;
1024
1025         if (ha->flags.enable_lip_reset) {
1026                 status = qla2x00_lip_reset(ha);
1027         }
1028
1029         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1030                 list_for_each_entry(fcport, &ha->fcports, list) {
1031                         if (fcport->port_type != FCT_TARGET)
1032                                 continue;
1033
1034                         status = qla2x00_device_reset(ha, fcport);
1035                         if (status != QLA_SUCCESS)
1036                                 break;
1037                 }
1038         }
1039
1040         if (status == QLA_SUCCESS &&
1041                 ((!ha->flags.enable_target_reset &&
1042                   !ha->flags.enable_lip_reset) ||
1043                 ha->flags.enable_lip_full_login)) {
1044
1045                 status = qla2x00_full_login_lip(ha);
1046         }
1047
1048         /* Issue marker command only when we are going to start the I/O */
1049         ha->marker_needed = 1;
1050
1051         if (status) {
1052                 /* Empty */
1053                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1054                                 __func__,
1055                                 ha->host_no);)
1056         } else {
1057                 /* Empty */
1058                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1059                                 __func__,
1060                                 ha->host_no);)
1061         }
1062
1063         return(status);
1064 }
1065
1066 /*
1067  * qla2x00_device_reset
1068  *      Issue bus device reset message to the target.
1069  *
1070  * Input:
1071  *      ha = adapter block pointer.
1072  *      t = SCSI ID.
1073  *      TARGET_QUEUE_LOCK must be released.
1074  *      ADAPTER_STATE_LOCK must be released.
1075  *
1076  * Context:
1077  *      Kernel context.
1078  */
1079 static int
1080 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1081 {
1082         /* Abort Target command will clear Reservation */
1083         return ha->isp_ops.abort_target(reset_fcport);
1084 }
1085
1086 static int
1087 qla2xxx_slave_alloc(struct scsi_device *sdev)
1088 {
1089         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1090
1091         if (!rport)
1092                 return -ENXIO;
1093
1094         sdev->hostdata = rport->dd_data;
1095
1096         return 0;
1097 }
1098
1099 static int
1100 qla2xxx_slave_configure(struct scsi_device *sdev)
1101 {
1102         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1103         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1104
1105         if (sdev->tagged_supported)
1106                 scsi_activate_tcq(sdev, 32);
1107         else
1108                 scsi_deactivate_tcq(sdev, 32);
1109
1110         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1111
1112         return 0;
1113 }
1114
1115 static void
1116 qla2xxx_slave_destroy(struct scsi_device *sdev)
1117 {
1118         sdev->hostdata = NULL;
1119 }
1120
1121 static int
1122 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1123 {
1124         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1125         return sdev->queue_depth;
1126 }
1127
1128 static int
1129 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1130 {
1131         if (sdev->tagged_supported) {
1132                 scsi_set_tag_type(sdev, tag_type);
1133                 if (tag_type)
1134                         scsi_activate_tcq(sdev, sdev->queue_depth);
1135                 else
1136                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1137         } else
1138                 tag_type = 0;
1139
1140         return tag_type;
1141 }
1142
1143 /**
1144  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1145  * @ha: HA context
1146  *
1147  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1148  * supported addressing method.
1149  */
1150 static void
1151 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1152 {
1153         /* Assume a 32bit DMA mask. */
1154         ha->flags.enable_64bit_addressing = 0;
1155
1156         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1157                 /* Any upper-dword bits set? */
1158                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1159                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1160                         /* Ok, a 64bit DMA mask is applicable. */
1161                         ha->flags.enable_64bit_addressing = 1;
1162                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1163                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1164                         return;
1165                 }
1166         }
1167
1168         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1169         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1170 }
1171
1172 static int
1173 qla2x00_iospace_config(scsi_qla_host_t *ha)
1174 {
1175         unsigned long   pio, pio_len, pio_flags;
1176         unsigned long   mmio, mmio_len, mmio_flags;
1177
1178         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1179         pio = pci_resource_start(ha->pdev, 0);
1180         pio_len = pci_resource_len(ha->pdev, 0);
1181         pio_flags = pci_resource_flags(ha->pdev, 0);
1182         if (pio_flags & IORESOURCE_IO) {
1183                 if (pio_len < MIN_IOBASE_LEN) {
1184                         qla_printk(KERN_WARNING, ha,
1185                             "Invalid PCI I/O region size (%s)...\n",
1186                                 pci_name(ha->pdev));
1187                         pio = 0;
1188                 }
1189         } else {
1190                 qla_printk(KERN_WARNING, ha,
1191                     "region #0 not a PIO resource (%s)...\n",
1192                     pci_name(ha->pdev));
1193                 pio = 0;
1194         }
1195
1196         /* Use MMIO operations for all accesses. */
1197         mmio = pci_resource_start(ha->pdev, 1);
1198         mmio_len = pci_resource_len(ha->pdev, 1);
1199         mmio_flags = pci_resource_flags(ha->pdev, 1);
1200
1201         if (!(mmio_flags & IORESOURCE_MEM)) {
1202                 qla_printk(KERN_ERR, ha,
1203                     "region #0 not an MMIO resource (%s), aborting\n",
1204                     pci_name(ha->pdev));
1205                 goto iospace_error_exit;
1206         }
1207         if (mmio_len < MIN_IOBASE_LEN) {
1208                 qla_printk(KERN_ERR, ha,
1209                     "Invalid PCI mem region size (%s), aborting\n",
1210                         pci_name(ha->pdev));
1211                 goto iospace_error_exit;
1212         }
1213
1214         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1215                 qla_printk(KERN_WARNING, ha,
1216                     "Failed to reserve PIO/MMIO regions (%s)\n",
1217                     pci_name(ha->pdev));
1218
1219                 goto iospace_error_exit;
1220         }
1221
1222         ha->pio_address = pio;
1223         ha->pio_length = pio_len;
1224         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1225         if (!ha->iobase) {
1226                 qla_printk(KERN_ERR, ha,
1227                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1228
1229                 goto iospace_error_exit;
1230         }
1231
1232         return (0);
1233
1234 iospace_error_exit:
1235         return (-ENOMEM);
1236 }
1237
1238 static void
1239 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1240 {
1241         unsigned long flags = 0;
1242         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1243
1244         spin_lock_irqsave(&ha->hardware_lock, flags);
1245         ha->interrupts_on = 1;
1246         /* enable risc and host interrupts */
1247         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1248         RD_REG_WORD(&reg->ictrl);
1249         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1250
1251 }
1252
1253 static void
1254 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1255 {
1256         unsigned long flags = 0;
1257         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1258
1259         spin_lock_irqsave(&ha->hardware_lock, flags);
1260         ha->interrupts_on = 0;
1261         /* disable risc and host interrupts */
1262         WRT_REG_WORD(&reg->ictrl, 0);
1263         RD_REG_WORD(&reg->ictrl);
1264         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1265 }
1266
1267 static void
1268 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1269 {
1270         unsigned long flags = 0;
1271         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1272
1273         spin_lock_irqsave(&ha->hardware_lock, flags);
1274         ha->interrupts_on = 1;
1275         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1276         RD_REG_DWORD(&reg->ictrl);
1277         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1278 }
1279
1280 static void
1281 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1282 {
1283         unsigned long flags = 0;
1284         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1285
1286         spin_lock_irqsave(&ha->hardware_lock, flags);
1287         ha->interrupts_on = 0;
1288         WRT_REG_DWORD(&reg->ictrl, 0);
1289         RD_REG_DWORD(&reg->ictrl);
1290         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1291 }
1292
1293 /*
1294  * PCI driver interface
1295  */
1296 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1297 {
1298         int     ret = -ENODEV;
1299         device_reg_t __iomem *reg;
1300         struct Scsi_Host *host;
1301         scsi_qla_host_t *ha;
1302         unsigned long   flags = 0;
1303         unsigned long   wait_switch = 0;
1304         char pci_info[20];
1305         char fw_str[30];
1306         fc_port_t *fcport;
1307
1308         if (pci_enable_device(pdev))
1309                 goto probe_out;
1310
1311         host = scsi_host_alloc(brd_info->sht ? brd_info->sht:
1312             &qla2x00_driver_template, sizeof(scsi_qla_host_t));
1313         if (host == NULL) {
1314                 printk(KERN_WARNING
1315                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1316                 goto probe_disable_device;
1317         }
1318
1319         /* Clear our data area */
1320         ha = (scsi_qla_host_t *)host->hostdata;
1321         memset(ha, 0, sizeof(scsi_qla_host_t));
1322
1323         ha->pdev = pdev;
1324         ha->host = host;
1325         ha->host_no = host->host_no;
1326         ha->brd_info = brd_info;
1327         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1328
1329         /* Configure PCI I/O space */
1330         ret = qla2x00_iospace_config(ha);
1331         if (ret)
1332                 goto probe_failed;
1333
1334         qla_printk(KERN_INFO, ha,
1335             "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1336             pdev->irq, ha->iobase);
1337
1338         spin_lock_init(&ha->hardware_lock);
1339
1340         ha->prev_topology = 0;
1341         ha->ports = MAX_BUSES;
1342         ha->init_cb_size = sizeof(init_cb_t);
1343         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1344
1345         /* Assign ISP specific operations. */
1346         ha->isp_ops.pci_config          = qla2100_pci_config;
1347         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1348         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1349         ha->isp_ops.config_rings        = qla2x00_config_rings;
1350         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1351         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1352         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1353         ha->isp_ops.load_risc           = qla2x00_load_risc;
1354         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1355         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1356         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1357         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1358         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1359         ha->isp_ops.abort_command       = qla2x00_abort_command;
1360         ha->isp_ops.abort_target        = qla2x00_abort_target;
1361         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1362         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1363         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1364         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1365         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1366         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1367         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1368         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1369         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1370         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1371         if (IS_QLA2100(ha)) {
1372                 host->max_id = MAX_TARGETS_2100;
1373                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1374                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1375                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1376                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1377                 host->sg_tablesize = 32;
1378                 ha->gid_list_info_size = 4;
1379         } else if (IS_QLA2200(ha)) {
1380                 host->max_id = MAX_TARGETS_2200;
1381                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1382                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1383                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1384                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1385                 ha->gid_list_info_size = 4;
1386         } else if (IS_QLA23XX(ha)) {
1387                 host->max_id = MAX_TARGETS_2200;
1388                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1389                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1390                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1391                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1392                 ha->isp_ops.pci_config = qla2300_pci_config;
1393                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1394                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1395                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1396                 ha->gid_list_info_size = 6;
1397         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1398                 host->max_id = MAX_TARGETS_2200;
1399                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1400                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1401                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1402                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1403                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1404                 ha->mgmt_svr_loop_id = 10;
1405                 ha->isp_ops.pci_config = qla24xx_pci_config;
1406                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1407                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1408                 ha->isp_ops.config_rings = qla24xx_config_rings;
1409                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1410                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1411                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1412                 ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1413                 if (ql2xfwloadbin)
1414                         ha->isp_ops.load_risc = qla24xx_load_risc_hotplug;
1415                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1416                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1417                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1418                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1419                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1420                 ha->isp_ops.abort_command = qla24xx_abort_command;
1421                 ha->isp_ops.abort_target = qla24xx_abort_target;
1422                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1423                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1424                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1425                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1426                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1427                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1428                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1429                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1430                 ha->gid_list_info_size = 8;
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         ha->dpc_pid = -1;
1453         init_completion(&ha->dpc_inited);
1454         init_completion(&ha->dpc_exited);
1455
1456         qla2x00_config_dma_addressing(ha);
1457         if (qla2x00_mem_alloc(ha)) {
1458                 qla_printk(KERN_WARNING, ha,
1459                     "[ERROR] Failed to allocate memory for adapter\n");
1460
1461                 ret = -ENOMEM;
1462                 goto probe_failed;
1463         }
1464
1465         if (qla2x00_initialize_adapter(ha) &&
1466             !(ha->device_flags & DFLG_NO_CABLE)) {
1467
1468                 qla_printk(KERN_WARNING, ha,
1469                     "Failed to initialize adapter\n");
1470
1471                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1472                     "Adapter flags %x.\n",
1473                     ha->host_no, ha->device_flags));
1474
1475                 ret = -ENODEV;
1476                 goto probe_failed;
1477         }
1478
1479         /*
1480          * Startup the kernel thread for this host adapter
1481          */
1482         ha->dpc_should_die = 0;
1483         ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1484         if (ha->dpc_pid < 0) {
1485                 qla_printk(KERN_WARNING, ha,
1486                     "Unable to start DPC thread!\n");
1487
1488                 ret = -ENODEV;
1489                 goto probe_failed;
1490         }
1491         wait_for_completion(&ha->dpc_inited);
1492
1493         host->this_id = 255;
1494         host->cmd_per_lun = 3;
1495         host->unique_id = ha->instance;
1496         host->max_cmd_len = MAX_CMDSZ;
1497         host->max_channel = ha->ports - 1;
1498         host->max_lun = MAX_LUNS;
1499         host->transportt = qla2xxx_transport_template;
1500
1501         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1502             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1503         if (ret) {
1504                 qla_printk(KERN_WARNING, ha,
1505                     "Failed to reserve interrupt %d already in use.\n",
1506                     pdev->irq);
1507                 goto probe_failed;
1508         }
1509         host->irq = pdev->irq;
1510
1511         /* Initialized the timer */
1512         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1513
1514         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1515             ha->host_no, ha));
1516
1517         ha->isp_ops.disable_intrs(ha);
1518
1519         spin_lock_irqsave(&ha->hardware_lock, flags);
1520         reg = ha->iobase;
1521         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1522                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1523                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1524         } else {
1525                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1526                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1527                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1528
1529                 /* Enable proper parity */
1530                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1531                         if (IS_QLA2300(ha))
1532                                 /* SRAM parity */
1533                                 WRT_REG_WORD(&reg->isp.hccr,
1534                                     (HCCR_ENABLE_PARITY + 0x1));
1535                         else
1536                                 /* SRAM, Instruction RAM and GP RAM parity */
1537                                 WRT_REG_WORD(&reg->isp.hccr,
1538                                     (HCCR_ENABLE_PARITY + 0x7));
1539                 }
1540         }
1541         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1542
1543         ha->isp_ops.enable_intrs(ha);
1544
1545         /* v2.19.5b6 */
1546         /*
1547          * Wait around max loop_reset_delay secs for the devices to come
1548          * on-line. We don't want Linux scanning before we are ready.
1549          *
1550          */
1551         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1552             time_before(jiffies,wait_switch) &&
1553              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1554              && (ha->device_flags & SWITCH_FOUND) ;) {
1555
1556                 qla2x00_check_fabric_devices(ha);
1557
1558                 msleep(10);
1559         }
1560
1561         pci_set_drvdata(pdev, ha);
1562         ha->flags.init_done = 1;
1563         num_hosts++;
1564
1565         ret = scsi_add_host(host, &pdev->dev);
1566         if (ret)
1567                 goto probe_failed;
1568
1569         qla2x00_alloc_sysfs_attr(ha);
1570
1571         qla2x00_init_host_attr(ha);
1572
1573         qla_printk(KERN_INFO, ha, "\n"
1574             " QLogic Fibre Channel HBA Driver: %s\n"
1575             "  QLogic %s - %s\n"
1576             "  %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1577             ha->model_number, ha->model_desc ? ha->model_desc: "",
1578             ha->brd_info->isp_name, ha->isp_ops.pci_info_str(ha, pci_info),
1579             pci_name(pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1580             ha->host_no, 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         fc_remove_host(ha->host);
1590
1591         qla2x00_free_device(ha);
1592
1593         scsi_host_put(host);
1594
1595 probe_disable_device:
1596         pci_disable_device(pdev);
1597
1598 probe_out:
1599         return ret;
1600 }
1601 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1602
1603 void qla2x00_remove_one(struct pci_dev *pdev)
1604 {
1605         scsi_qla_host_t *ha;
1606
1607         ha = pci_get_drvdata(pdev);
1608
1609         qla2x00_free_sysfs_attr(ha);
1610
1611         fc_remove_host(ha->host);
1612
1613         scsi_remove_host(ha->host);
1614
1615         qla2x00_free_device(ha);
1616
1617         scsi_host_put(ha->host);
1618
1619         pci_set_drvdata(pdev, NULL);
1620 }
1621 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1622
1623 static void
1624 qla2x00_free_device(scsi_qla_host_t *ha)
1625 {
1626         int ret;
1627
1628         /* Abort any outstanding IO descriptors. */
1629         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1630                 qla2x00_cancel_io_descriptors(ha);
1631
1632         /* turn-off interrupts on the card */
1633         if (ha->interrupts_on)
1634                 ha->isp_ops.disable_intrs(ha);
1635
1636         /* Disable timer */
1637         if (ha->timer_active)
1638                 qla2x00_stop_timer(ha);
1639
1640         /* Kill the kernel thread for this host */
1641         if (ha->dpc_pid >= 0) {
1642                 ha->dpc_should_die = 1;
1643                 wmb();
1644                 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1645                 if (ret) {
1646                         qla_printk(KERN_ERR, ha,
1647                             "Unable to signal DPC thread -- (%d)\n", ret);
1648
1649                         /* TODO: SOMETHING MORE??? */
1650                 } else {
1651                         wait_for_completion(&ha->dpc_exited);
1652                 }
1653         }
1654
1655         qla2x00_mem_free(ha);
1656
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 /*
1673  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1674  *
1675  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1676  *
1677  * Return: None.
1678  *
1679  * Context:
1680  */
1681 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1682     int do_login)
1683 {
1684         if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1685                 fc_remote_port_block(fcport->rport);
1686         /*
1687          * We may need to retry the login, so don't change the state of the
1688          * port but do the retries.
1689          */
1690         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1691                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1692
1693         if (!do_login)
1694                 return;
1695
1696         if (fcport->login_retry == 0) {
1697                 fcport->login_retry = ha->login_retry_count;
1698                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1699
1700                 DEBUG(printk("scsi(%ld): Port login retry: "
1701                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1702                     "id = 0x%04x retry cnt=%d\n",
1703                     ha->host_no,
1704                     fcport->port_name[0],
1705                     fcport->port_name[1],
1706                     fcport->port_name[2],
1707                     fcport->port_name[3],
1708                     fcport->port_name[4],
1709                     fcport->port_name[5],
1710                     fcport->port_name[6],
1711                     fcport->port_name[7],
1712                     fcport->loop_id,
1713                     fcport->login_retry));
1714         }
1715 }
1716
1717 /*
1718  * qla2x00_mark_all_devices_lost
1719  *      Updates fcport state when device goes offline.
1720  *
1721  * Input:
1722  *      ha = adapter block pointer.
1723  *      fcport = port structure pointer.
1724  *
1725  * Return:
1726  *      None.
1727  *
1728  * Context:
1729  */
1730 void
1731 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1732 {
1733         fc_port_t *fcport;
1734
1735         list_for_each_entry(fcport, &ha->fcports, list) {
1736                 if (fcport->port_type != FCT_TARGET)
1737                         continue;
1738
1739                 /*
1740                  * No point in marking the device as lost, if the device is
1741                  * already DEAD.
1742                  */
1743                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1744                         continue;
1745                 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1746                         fc_remote_port_block(fcport->rport);
1747                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1748         }
1749 }
1750
1751 /*
1752 * qla2x00_mem_alloc
1753 *      Allocates adapter memory.
1754 *
1755 * Returns:
1756 *      0  = success.
1757 *      1  = failure.
1758 */
1759 static uint8_t
1760 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1761 {
1762         char    name[16];
1763         uint8_t   status = 1;
1764         int     retry= 10;
1765
1766         do {
1767                 /*
1768                  * This will loop only once if everything goes well, else some
1769                  * number of retries will be performed to get around a kernel
1770                  * bug where available mem is not allocated until after a
1771                  * little delay and a retry.
1772                  */
1773                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1774                     (ha->request_q_length + 1) * sizeof(request_t),
1775                     &ha->request_dma, GFP_KERNEL);
1776                 if (ha->request_ring == NULL) {
1777                         qla_printk(KERN_WARNING, ha,
1778                             "Memory Allocation failed - request_ring\n");
1779
1780                         qla2x00_mem_free(ha);
1781                         msleep(100);
1782
1783                         continue;
1784                 }
1785
1786                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1787                     (ha->response_q_length + 1) * sizeof(response_t),
1788                     &ha->response_dma, GFP_KERNEL);
1789                 if (ha->response_ring == NULL) {
1790                         qla_printk(KERN_WARNING, ha,
1791                             "Memory Allocation failed - response_ring\n");
1792
1793                         qla2x00_mem_free(ha);
1794                         msleep(100);
1795
1796                         continue;
1797                 }
1798
1799                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1800                     &ha->gid_list_dma, GFP_KERNEL);
1801                 if (ha->gid_list == NULL) {
1802                         qla_printk(KERN_WARNING, ha,
1803                             "Memory Allocation failed - gid_list\n");
1804
1805                         qla2x00_mem_free(ha);
1806                         msleep(100);
1807
1808                         continue;
1809                 }
1810
1811                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1812                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1813                 if (ha->rlc_rsp == NULL) {
1814                         qla_printk(KERN_WARNING, ha,
1815                                 "Memory Allocation failed - rlc");
1816
1817                         qla2x00_mem_free(ha);
1818                         msleep(100);
1819
1820                         continue;
1821                 }
1822
1823                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1824                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1825                     DMA_POOL_SIZE, 8, 0);
1826                 if (ha->s_dma_pool == NULL) {
1827                         qla_printk(KERN_WARNING, ha,
1828                             "Memory Allocation failed - s_dma_pool\n");
1829
1830                         qla2x00_mem_free(ha);
1831                         msleep(100);
1832
1833                         continue;
1834                 }
1835
1836                 /* get consistent memory allocated for init control block */
1837                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1838                     &ha->init_cb_dma);
1839                 if (ha->init_cb == NULL) {
1840                         qla_printk(KERN_WARNING, ha,
1841                             "Memory Allocation failed - init_cb\n");
1842
1843                         qla2x00_mem_free(ha);
1844                         msleep(100);
1845
1846                         continue;
1847                 }
1848                 memset(ha->init_cb, 0, ha->init_cb_size);
1849
1850                 /* Get consistent memory allocated for Get Port Database cmd */
1851                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1852                     &ha->iodesc_pd_dma);
1853                 if (ha->iodesc_pd == NULL) {
1854                         /* error */
1855                         qla_printk(KERN_WARNING, ha,
1856                             "Memory Allocation failed - iodesc_pd\n");
1857
1858                         qla2x00_mem_free(ha);
1859                         msleep(100);
1860
1861                         continue;
1862                 }
1863                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1864
1865                 /* Allocate ioctl related memory. */
1866                 if (qla2x00_alloc_ioctl_mem(ha)) {
1867                         qla_printk(KERN_WARNING, ha,
1868                             "Memory Allocation failed - ioctl_mem\n");
1869
1870                         qla2x00_mem_free(ha);
1871                         msleep(100);
1872
1873                         continue;
1874                 }
1875
1876                 if (qla2x00_allocate_sp_pool(ha)) {
1877                         qla_printk(KERN_WARNING, ha,
1878                             "Memory Allocation failed - "
1879                             "qla2x00_allocate_sp_pool()\n");
1880
1881                         qla2x00_mem_free(ha);
1882                         msleep(100);
1883
1884                         continue;
1885                 }
1886
1887                 /* Allocate memory for SNS commands */
1888                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1889                         /* Get consistent memory allocated for SNS commands */
1890                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1891                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1892                             GFP_KERNEL);
1893                         if (ha->sns_cmd == NULL) {
1894                                 /* error */
1895                                 qla_printk(KERN_WARNING, ha,
1896                                     "Memory Allocation failed - sns_cmd\n");
1897
1898                                 qla2x00_mem_free(ha);
1899                                 msleep(100);
1900
1901                                 continue;
1902                         }
1903                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1904                 } else {
1905                         /* Get consistent memory allocated for MS IOCB */
1906                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1907                             &ha->ms_iocb_dma);
1908                         if (ha->ms_iocb == NULL) {
1909                                 /* error */
1910                                 qla_printk(KERN_WARNING, ha,
1911                                     "Memory Allocation failed - ms_iocb\n");
1912
1913                                 qla2x00_mem_free(ha);
1914                                 msleep(100);
1915
1916                                 continue;
1917                         }
1918                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1919
1920                         /*
1921                          * Get consistent memory allocated for CT SNS
1922                          * commands
1923                          */
1924                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1925                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1926                             GFP_KERNEL);
1927                         if (ha->ct_sns == NULL) {
1928                                 /* error */
1929                                 qla_printk(KERN_WARNING, ha,
1930                                     "Memory Allocation failed - ct_sns\n");
1931
1932                                 qla2x00_mem_free(ha);
1933                                 msleep(100);
1934
1935                                 continue;
1936                         }
1937                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1938                 }
1939
1940                 /* Done all allocations without any error. */
1941                 status = 0;
1942
1943         } while (retry-- && status != 0);
1944
1945         if (status) {
1946                 printk(KERN_WARNING
1947                         "%s(): **** FAILED ****\n", __func__);
1948         }
1949
1950         return(status);
1951 }
1952
1953 /*
1954 * qla2x00_mem_free
1955 *      Frees all adapter allocated memory.
1956 *
1957 * Input:
1958 *      ha = adapter block pointer.
1959 */
1960 static void
1961 qla2x00_mem_free(scsi_qla_host_t *ha)
1962 {
1963         struct list_head        *fcpl, *fcptemp;
1964         fc_port_t       *fcport;
1965         unsigned long   wtime;/* max wait time if mbx cmd is busy. */
1966
1967         if (ha == NULL) {
1968                 /* error */
1969                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1970                 return;
1971         }
1972
1973         /* Make sure all other threads are stopped. */
1974         wtime = 60 * HZ;
1975         while (ha->dpc_wait && wtime) {
1976                 set_current_state(TASK_INTERRUPTIBLE);
1977                 wtime = schedule_timeout(wtime);
1978         }
1979
1980         /* free ioctl memory */
1981         qla2x00_free_ioctl_mem(ha);
1982
1983         /* free sp pool */
1984         qla2x00_free_sp_pool(ha);
1985
1986         if (ha->sns_cmd)
1987                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1988                     ha->sns_cmd, ha->sns_cmd_dma);
1989
1990         if (ha->ct_sns)
1991                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1992                     ha->ct_sns, ha->ct_sns_dma);
1993
1994         if (ha->ms_iocb)
1995                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1996
1997         if (ha->iodesc_pd)
1998                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1999
2000         if (ha->init_cb)
2001                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2002
2003         if (ha->s_dma_pool)
2004                 dma_pool_destroy(ha->s_dma_pool);
2005
2006         if (ha->rlc_rsp)
2007                 dma_free_coherent(&ha->pdev->dev,
2008                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2009                     ha->rlc_rsp_dma);
2010
2011         if (ha->gid_list)
2012                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2013                     ha->gid_list_dma);
2014
2015         if (ha->response_ring)
2016                 dma_free_coherent(&ha->pdev->dev,
2017                     (ha->response_q_length + 1) * sizeof(response_t),
2018                     ha->response_ring, ha->response_dma);
2019
2020         if (ha->request_ring)
2021                 dma_free_coherent(&ha->pdev->dev,
2022                     (ha->request_q_length + 1) * sizeof(request_t),
2023                     ha->request_ring, ha->request_dma);
2024
2025         ha->sns_cmd = NULL;
2026         ha->sns_cmd_dma = 0;
2027         ha->ct_sns = NULL;
2028         ha->ct_sns_dma = 0;
2029         ha->ms_iocb = NULL;
2030         ha->ms_iocb_dma = 0;
2031         ha->iodesc_pd = NULL;
2032         ha->iodesc_pd_dma = 0;
2033         ha->init_cb = NULL;
2034         ha->init_cb_dma = 0;
2035
2036         ha->s_dma_pool = NULL;
2037
2038         ha->rlc_rsp = NULL;
2039         ha->rlc_rsp_dma = 0;
2040         ha->gid_list = NULL;
2041         ha->gid_list_dma = 0;
2042
2043         ha->response_ring = NULL;
2044         ha->response_dma = 0;
2045         ha->request_ring = NULL;
2046         ha->request_dma = 0;
2047
2048         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2049                 fcport = list_entry(fcpl, fc_port_t, list);
2050
2051                 /* fc ports */
2052                 list_del_init(&fcport->list);
2053                 kfree(fcport);
2054         }
2055         INIT_LIST_HEAD(&ha->fcports);
2056
2057         if (ha->fw_dump)
2058                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2059
2060         vfree(ha->fw_dump24);
2061
2062         vfree(ha->fw_dump_buffer);
2063
2064         ha->fw_dump = NULL;
2065         ha->fw_dump24 = NULL;
2066         ha->fw_dumped = 0;
2067         ha->fw_dump_reading = 0;
2068         ha->fw_dump_buffer = NULL;
2069 }
2070
2071 /*
2072  * qla2x00_allocate_sp_pool
2073  *       This routine is called during initialization to allocate
2074  *       memory for local srb_t.
2075  *
2076  * Input:
2077  *       ha   = adapter block pointer.
2078  *
2079  * Context:
2080  *      Kernel context.
2081  *
2082  * Note: Sets the ref_count for non Null sp to one.
2083  */
2084 static int
2085 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2086 {
2087         int      rval;
2088
2089         rval = QLA_SUCCESS;
2090         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2091             mempool_free_slab, srb_cachep);
2092         if (ha->srb_mempool == NULL) {
2093                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2094                 rval = QLA_FUNCTION_FAILED;
2095         }
2096         return (rval);
2097 }
2098
2099 /*
2100  *  This routine frees all adapter allocated memory.
2101  *
2102  */
2103 static void
2104 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2105 {
2106         if (ha->srb_mempool) {
2107                 mempool_destroy(ha->srb_mempool);
2108                 ha->srb_mempool = NULL;
2109         }
2110 }
2111
2112 /**************************************************************************
2113 * qla2x00_do_dpc
2114 *   This kernel thread is a task that is schedule by the interrupt handler
2115 *   to perform the background processing for interrupts.
2116 *
2117 * Notes:
2118 * This task always run in the context of a kernel thread.  It
2119 * is kick-off by the driver's detect code and starts up
2120 * up one per adapter. It immediately goes to sleep and waits for
2121 * some fibre event.  When either the interrupt handler or
2122 * the timer routine detects a event it will one of the task
2123 * bits then wake us up.
2124 **************************************************************************/
2125 static int
2126 qla2x00_do_dpc(void *data)
2127 {
2128         DECLARE_MUTEX_LOCKED(sem);
2129         scsi_qla_host_t *ha;
2130         fc_port_t       *fcport;
2131         uint8_t         status;
2132         uint16_t        next_loopid;
2133
2134         ha = (scsi_qla_host_t *)data;
2135
2136         lock_kernel();
2137
2138         daemonize("%s_dpc", ha->host_str);
2139         allow_signal(SIGHUP);
2140
2141         ha->dpc_wait = &sem;
2142
2143         set_user_nice(current, -20);
2144
2145         unlock_kernel();
2146
2147         complete(&ha->dpc_inited);
2148
2149         while (1) {
2150                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2151
2152                 if (down_interruptible(&sem))
2153                         break;
2154
2155                 if (ha->dpc_should_die)
2156                         break;
2157
2158                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2159
2160                 /* Initialization not yet finished. Don't do anything yet. */
2161                 if (!ha->flags.init_done || ha->dpc_active)
2162                         continue;
2163
2164                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2165
2166                 ha->dpc_active = 1;
2167
2168                 if (ha->flags.mbox_busy) {
2169                         ha->dpc_active = 0;
2170                         continue;
2171                 }
2172
2173                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2174
2175                         DEBUG(printk("scsi(%ld): dpc: sched "
2176                             "qla2x00_abort_isp ha = %p\n",
2177                             ha->host_no, ha));
2178                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2179                             &ha->dpc_flags))) {
2180
2181                                 if (qla2x00_abort_isp(ha)) {
2182                                         /* failed. retry later */
2183                                         set_bit(ISP_ABORT_NEEDED,
2184                                             &ha->dpc_flags);
2185                                 }
2186                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2187                         }
2188                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2189                             ha->host_no));
2190                 }
2191
2192                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2193                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2194
2195                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2196                             ha->host_no));
2197
2198                         qla2x00_rst_aen(ha);
2199                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2200                 }
2201
2202                 /* Retry each device up to login retry count */
2203                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2204                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2205                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2206
2207                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2208                             ha->host_no));
2209
2210                         next_loopid = 0;
2211                         list_for_each_entry(fcport, &ha->fcports, list) {
2212                                 if (fcport->port_type != FCT_TARGET)
2213                                         continue;
2214
2215                                 /*
2216                                  * If the port is not ONLINE then try to login
2217                                  * to it if we haven't run out of retries.
2218                                  */
2219                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2220                                     fcport->login_retry) {
2221
2222                                         fcport->login_retry--;
2223                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2224                                                 if (fcport->flags &
2225                                                     FCF_TAPE_PRESENT)
2226                                                         ha->isp_ops.fabric_logout(
2227                                                             ha, fcport->loop_id,
2228                                                             fcport->d_id.b.domain,
2229                                                             fcport->d_id.b.area,
2230                                                             fcport->d_id.b.al_pa);
2231                                                 status = qla2x00_fabric_login(
2232                                                     ha, fcport, &next_loopid);
2233                                         } else
2234                                                 status =
2235                                                     qla2x00_local_device_login(
2236                                                         ha, fcport->loop_id);
2237
2238                                         if (status == QLA_SUCCESS) {
2239                                                 fcport->old_loop_id = fcport->loop_id;
2240
2241                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2242                                                     ha->host_no, fcport->loop_id));
2243
2244                                                 fcport->port_login_retry_count =
2245                                                     ha->port_down_retry_count * PORT_RETRY_TIME;
2246                                                 atomic_set(&fcport->state, FCS_ONLINE);
2247                                                 atomic_set(&fcport->port_down_timer,
2248                                                     ha->port_down_retry_count * PORT_RETRY_TIME);
2249
2250                                                 fcport->login_retry = 0;
2251                                         } else if (status == 1) {
2252                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2253                                                 /* retry the login again */
2254                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2255                                                     ha->host_no,
2256                                                     fcport->login_retry, fcport->loop_id));
2257                                         } else {
2258                                                 fcport->login_retry = 0;
2259                                         }
2260                                 }
2261                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2262                                         break;
2263                         }
2264                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2265                             ha->host_no));
2266                 }
2267
2268                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2269                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2270
2271                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2272                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2273                             ha->host_no));
2274
2275                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2276
2277                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2278                             ha->host_no));
2279                 }
2280
2281                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2282
2283                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2284                             ha->host_no));
2285
2286                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2287                             &ha->dpc_flags))) {
2288
2289                                 qla2x00_loop_resync(ha);
2290
2291                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2292                         }
2293
2294                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2295                             ha->host_no));
2296                 }
2297
2298                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2299
2300                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2301                             ha->host_no));
2302
2303                         qla2x00_rescan_fcports(ha);
2304
2305                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2306                             "end.\n",
2307                             ha->host_no));
2308                 }
2309
2310                 if (!ha->interrupts_on)
2311                         ha->isp_ops.enable_intrs(ha);
2312
2313                 ha->dpc_active = 0;
2314         } /* End of while(1) */
2315
2316         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2317
2318         /*
2319          * Make sure that nobody tries to wake us up again.
2320          */
2321         ha->dpc_wait = NULL;
2322         ha->dpc_active = 0;
2323
2324         complete_and_exit(&ha->dpc_exited, 0);
2325 }
2326
2327 /*
2328 *  qla2x00_rst_aen
2329 *      Processes asynchronous reset.
2330 *
2331 * Input:
2332 *      ha  = adapter block pointer.
2333 */
2334 static void
2335 qla2x00_rst_aen(scsi_qla_host_t *ha)
2336 {
2337         if (ha->flags.online && !ha->flags.reset_active &&
2338             !atomic_read(&ha->loop_down_timer) &&
2339             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2340                 do {
2341                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2342
2343                         /*
2344                          * Issue marker command only when we are going to start
2345                          * the I/O.
2346                          */
2347                         ha->marker_needed = 1;
2348                 } while (!atomic_read(&ha->loop_down_timer) &&
2349                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2350         }
2351 }
2352
2353 static void
2354 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2355 {
2356         struct scsi_cmnd *cmd = sp->cmd;
2357
2358         if (sp->flags & SRB_DMA_VALID) {
2359                 if (cmd->use_sg) {
2360                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2361                             cmd->use_sg, cmd->sc_data_direction);
2362                 } else if (cmd->request_bufflen) {
2363                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2364                             cmd->request_bufflen, cmd->sc_data_direction);
2365                 }
2366                 sp->flags &= ~SRB_DMA_VALID;
2367         }
2368         CMD_SP(cmd) = NULL;
2369 }
2370
2371 void
2372 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2373 {
2374         struct scsi_cmnd *cmd = sp->cmd;
2375
2376         qla2x00_sp_free_dma(ha, sp);
2377
2378         mempool_free(sp, ha->srb_mempool);
2379
2380         cmd->scsi_done(cmd);
2381 }
2382
2383 /**************************************************************************
2384 *   qla2x00_timer
2385 *
2386 * Description:
2387 *   One second timer
2388 *
2389 * Context: Interrupt
2390 ***************************************************************************/
2391 static void
2392 qla2x00_timer(scsi_qla_host_t *ha)
2393 {
2394         unsigned long   cpu_flags = 0;
2395         fc_port_t       *fcport;
2396         int             start_dpc = 0;
2397         int             index;
2398         srb_t           *sp;
2399         int             t;
2400
2401         /*
2402          * Ports - Port down timer.
2403          *
2404          * Whenever, a port is in the LOST state we start decrementing its port
2405          * down timer every second until it reaches zero. Once  it reaches zero
2406          * the port it marked DEAD.
2407          */
2408         t = 0;
2409         list_for_each_entry(fcport, &ha->fcports, list) {
2410                 if (fcport->port_type != FCT_TARGET)
2411                         continue;
2412
2413                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2414
2415                         if (atomic_read(&fcport->port_down_timer) == 0)
2416                                 continue;
2417
2418                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2419                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2420
2421                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2422                             "%d remaining\n",
2423                             ha->host_no,
2424                             t, atomic_read(&fcport->port_down_timer)));
2425                 }
2426                 t++;
2427         } /* End of for fcport  */
2428
2429
2430         /* Loop down handler. */
2431         if (atomic_read(&ha->loop_down_timer) > 0 &&
2432             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2433
2434                 if (atomic_read(&ha->loop_down_timer) ==
2435                     ha->loop_down_abort_time) {
2436
2437                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2438                             "queues before time expire\n",
2439                             ha->host_no));
2440
2441                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2442                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2443
2444                         /* Schedule an ISP abort to return any tape commands. */
2445                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2446                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2447                             index++) {
2448                                 fc_port_t *sfcp;
2449
2450                                 sp = ha->outstanding_cmds[index];
2451                                 if (!sp)
2452                                         continue;
2453                                 sfcp = sp->fcport;
2454                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2455                                         continue;
2456
2457                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2458                                 break;
2459                         }
2460                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2461
2462                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2463                         start_dpc++;
2464                 }
2465
2466                 /* if the loop has been down for 4 minutes, reinit adapter */
2467                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2468                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2469                             "restarting queues.\n",
2470                             ha->host_no));
2471
2472                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2473                         start_dpc++;
2474
2475                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2476                                 DEBUG(printk("scsi(%ld): Loop down - "
2477                                     "aborting ISP.\n",
2478                                     ha->host_no));
2479                                 qla_printk(KERN_WARNING, ha,
2480                                     "Loop down - aborting ISP.\n");
2481
2482                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2483                         }
2484                 }
2485                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2486                     ha->host_no,
2487                     atomic_read(&ha->loop_down_timer)));
2488         }
2489
2490         /* Schedule the DPC routine if needed */
2491         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2492             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2493             start_dpc ||
2494             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2495             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2496             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2497             ha->dpc_wait && !ha->dpc_active) {
2498
2499                 up(ha->dpc_wait);
2500         }
2501
2502         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2503 }
2504
2505 /* XXX(hch): crude hack to emulate a down_timeout() */
2506 int
2507 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2508 {
2509         const unsigned int step = HZ/10;
2510
2511         do {
2512                 if (!down_trylock(sema))
2513                         return 0;
2514                 set_current_state(TASK_INTERRUPTIBLE);
2515                 if (schedule_timeout(step))
2516                         break;
2517         } while ((timeout -= step) > 0);
2518
2519         return -ETIMEDOUT;
2520 }
2521
2522 static struct qla_board_info qla_board_tbl[] = {
2523         {
2524                 .drv_name       = "qla2400",
2525                 .isp_name       = "ISP2422",
2526                 .fw_fname       = "ql2400_fw.bin",
2527                 .sht            = &qla24xx_driver_template,
2528         },
2529         {
2530                 .drv_name       = "qla2400",
2531                 .isp_name       = "ISP2432",
2532                 .fw_fname       = "ql2400_fw.bin",
2533                 .sht            = &qla24xx_driver_template,
2534         },
2535 };
2536
2537 static struct pci_device_id qla2xxx_pci_tbl[] = {
2538         {
2539                 .vendor         = PCI_VENDOR_ID_QLOGIC,
2540                 .device         = PCI_DEVICE_ID_QLOGIC_ISP2422,
2541                 .subvendor      = PCI_ANY_ID,
2542                 .subdevice      = PCI_ANY_ID,
2543                 .driver_data    = (unsigned long)&qla_board_tbl[0],
2544         },
2545         {
2546                 .vendor         = PCI_VENDOR_ID_QLOGIC,
2547                 .device         = PCI_DEVICE_ID_QLOGIC_ISP2432,
2548                 .subvendor      = PCI_ANY_ID,
2549                 .subdevice      = PCI_ANY_ID,
2550                 .driver_data    = (unsigned long)&qla_board_tbl[1],
2551         },
2552         {0, 0},
2553 };
2554 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2555
2556 static int __devinit
2557 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2558 {
2559         return qla2x00_probe_one(pdev,
2560             (struct qla_board_info *)id->driver_data);
2561 }
2562
2563 static void __devexit
2564 qla2xxx_remove_one(struct pci_dev *pdev)
2565 {
2566         qla2x00_remove_one(pdev);
2567 }
2568
2569 static struct pci_driver qla2xxx_pci_driver = {
2570         .name           = "qla2xxx",
2571         .id_table       = qla2xxx_pci_tbl,
2572         .probe          = qla2xxx_probe_one,
2573         .remove         = __devexit_p(qla2xxx_remove_one),
2574 };
2575
2576 /**
2577  * qla2x00_module_init - Module initialization.
2578  **/
2579 static int __init
2580 qla2x00_module_init(void)
2581 {
2582         int ret = 0;
2583
2584         /* Allocate cache for SRBs. */
2585         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2586             SLAB_HWCACHE_ALIGN, NULL, NULL);
2587         if (srb_cachep == NULL) {
2588                 printk(KERN_ERR
2589                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2590                 return -ENOMEM;
2591         }
2592
2593         /* Derive version string. */
2594         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2595 #if DEBUG_QLA2100
2596         strcat(qla2x00_version_str, "-debug");
2597 #endif
2598         qla2xxx_transport_template =
2599             fc_attach_transport(&qla2xxx_transport_functions);
2600         if (!qla2xxx_transport_template)
2601                 return -ENODEV;
2602
2603         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2604         ret = pci_module_init(&qla2xxx_pci_driver);
2605         if (ret) {
2606                 kmem_cache_destroy(srb_cachep);
2607                 fc_release_transport(qla2xxx_transport_template);
2608         }
2609         return ret;
2610 }
2611
2612 /**
2613  * qla2x00_module_exit - Module cleanup.
2614  **/
2615 static void __exit
2616 qla2x00_module_exit(void)
2617 {
2618         pci_unregister_driver(&qla2xxx_pci_driver);
2619         kmem_cache_destroy(srb_cachep);
2620         fc_release_transport(qla2xxx_transport_template);
2621 }
2622
2623 module_init(qla2x00_module_init);
2624 module_exit(qla2x00_module_exit);
2625
2626 MODULE_AUTHOR("QLogic Corporation");
2627 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2628 MODULE_LICENSE("GPL");
2629 MODULE_VERSION(QLA2XXX_VERSION);