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=1;
  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    1000
 506 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 507         unsigned long wait_iter = ABORT_WAIT_ITER;
 508         int ret = QLA_SUCCESS;
 509
 510         while (CMD_SP(cmd)) {
 511                 msleep(ABORT_POLLING_PERIOD);
 512
 513                 if (--wait_iter)
 514                         break;
 515         }
 516         if (CMD_SP(cmd))
 517                 ret = QLA_FUNCTION_FAILED;
 518
 519         return ret;
 520 }
 521
 522 /*
 523  * qla2x00_wait_for_hba_online
 524  *    Wait till the HBA is online after going through
 525  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 526  *    finally HBA is disabled ie marked offline
 527  *
 528  * Input:
 529  *     ha - pointer to host adapter structure
 530  *
 531  * Note:
 532  *    Does context switching-Release SPIN_LOCK
 533  *    (if any) before calling this routine.
 534  *
 535  * Return:
 536  *    Success (Adapter is online) : 0
 537  *    Failed  (Adapter is offline/disabled) : 1
 538  */
 539 static int
 540 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 541 {
 542         int             return_status;
 543         unsigned long   wait_online;
 544
 545         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 546         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 547             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 548             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 549             ha->dpc_active) && time_before(jiffies, wait_online)) {
 550
 551                 msleep(1000);
 552         }
 553         if (ha->flags.online)
 554                 return_status = QLA_SUCCESS;
 555         else
 556                 return_status = QLA_FUNCTION_FAILED;
 557
 558         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 559
 560         return (return_status);
 561 }
 562
 563 /*
 564  * qla2x00_wait_for_loop_ready
 565  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 566  *    to be in LOOP_READY state.
 567  * Input:
 568  *     ha - pointer to host adapter structure
 569  *
 570  * Note:
 571  *    Does context switching-Release SPIN_LOCK
 572  *    (if any) before calling this routine.
 573  *
 574  *
 575  * Return:
 576  *    Success (LOOP_READY) : 0
 577  *    Failed  (LOOP_NOT_READY) : 1
 578  */
 579 static inline int
 580 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 581 {
 582         int      return_status = QLA_SUCCESS;
 583         unsigned long loop_timeout ;
 584
 585         /* wait for 5 min at the max for loop to be ready */
 586         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 587
 588         while ((!atomic_read(&ha->loop_down_timer) &&
 589             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 590             atomic_read(&ha->loop_state) != LOOP_READY) {
 591                 msleep(1000);
 592                 if (time_after_eq(jiffies, loop_timeout)) {
 593                         return_status = QLA_FUNCTION_FAILED;
 594                         break;
 595                 }
 596         }
 597         return (return_status);
 598 }
 599
 600 /**************************************************************************
 601 * qla2xxx_eh_abort
 602 *
 603 * Description:
 604 *    The abort function will abort the specified command.
 605 *
 606 * Input:
 607 *    cmd = Linux SCSI command packet to be aborted.
 608 *
 609 * Returns:
 610 *    Either SUCCESS or FAILED.
 611 *
 612 * Note:
 613 **************************************************************************/
 614 int
 615 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 616 {
 617         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 618         srb_t *sp;
 619         int ret, i;
 620         unsigned int id, lun;
 621         unsigned long serial;
 622         unsigned long flags;
 623
 624         if (!CMD_SP(cmd))
 625                 return FAILED;
 626
 627         ret = FAILED;
 628
 629         id = cmd->device->id;
 630         lun = cmd->device->lun;
 631         serial = cmd->serial_number;
 632
 633         /* Check active list for command command. */
 634         spin_lock_irqsave(&ha->hardware_lock, flags);
 635         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 636                 sp = ha->outstanding_cmds[i];
 637
 638                 if (sp == NULL)
 639                         continue;
 640
 641                 if (sp->cmd != cmd)
 642                         continue;
 643
 644                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 645                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 646                     sp->state));
 647                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 648
 649                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 650                 if (ha->isp_ops.abort_command(ha, sp)) {
 651                         DEBUG2(printk("%s(%ld): abort_command "
 652                             "mbx failed.\n", __func__, ha->host_no));
 653                 } else {
 654                         DEBUG3(printk("%s(%ld): abort_command "
 655                             "mbx success.\n", __func__, ha->host_no));
 656                         ret = SUCCESS;
 657                 }
 658                 spin_lock_irqsave(&ha->hardware_lock, flags);
 659
 660                 break;
 661         }
 662         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 663
 664         /* Wait for the command to be returned. */
 665         if (ret == SUCCESS) {
 666                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 667                         qla_printk(KERN_ERR, ha,
 668                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 669                             "%x.\n", ha->host_no, id, lun, serial, ret);
 670                 }
 671         }
 672
 673         qla_printk(KERN_INFO, ha,
 674             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 675             id, lun, serial, ret);
 676
 677         return ret;
 678 }
 679
 680 /**************************************************************************
 681 * qla2x00_eh_wait_for_pending_target_commands
 682 *
 683 * Description:
 684 *    Waits for all the commands to come back from the specified target.
 685 *
 686 * Input:
 687 *    ha - pointer to scsi_qla_host structure.
 688 *    t  - target
 689 * Returns:
 690 *    Either SUCCESS or FAILED.
 691 *
 692 * Note:
 693 **************************************************************************/
 694 static int
 695 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 696 {
 697         int     cnt;
 698         int     status;
 699         srb_t           *sp;
 700         struct scsi_cmnd *cmd;
 701         unsigned long flags;
 702
 703         status = 0;
 704
 705         /*
 706          * Waiting for all commands for the designated target in the active
 707          * array
 708          */
 709         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 710                 spin_lock_irqsave(&ha->hardware_lock, flags);
 711                 sp = ha->outstanding_cmds[cnt];
 712                 if (sp) {
 713                         cmd = sp->cmd;
 714                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 715                         if (cmd->device->id == t) {
 716                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 717                                         status = 1;
 718                                         break;
 719                                 }
 720                         }
 721                 } else {
 722                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 723                 }
 724         }
 725         return (status);
 726 }
 727
 728
 729 /**************************************************************************
 730 * qla2xxx_eh_device_reset
 731 *
 732 * Description:
 733 *    The device reset function will reset the target and abort any
 734 *    executing commands.
 735 *
 736 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 737 *          attempt to use this value, even if you determine it is
 738 *          non-null.
 739 *
 740 * Input:
 741 *    cmd = Linux SCSI command packet of the command that cause the
 742 *          bus device reset.
 743 *
 744 * Returns:
 745 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 746 *
 747 **************************************************************************/
 748 int
 749 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 750 {
 751         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 752         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 753         srb_t *sp;
 754         int ret;
 755         unsigned int id, lun;
 756         unsigned long serial;
 757
 758         ret = FAILED;
 759
 760         id = cmd->device->id;
 761         lun = cmd->device->lun;
 762         serial = cmd->serial_number;
 763
 764         sp = (srb_t *) CMD_SP(cmd);
 765         if (!sp || !fcport)
 766                 return ret;
 767
 768         qla_printk(KERN_INFO, ha,
 769             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 770
 771         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 772                 goto eh_dev_reset_done;
 773
 774         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 775                 if (qla2x00_device_reset(ha, fcport) == 0)
 776                         ret = SUCCESS;
 777
 778 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 779                 if (ret == SUCCESS) {
 780                         if (fcport->flags & FC_FABRIC_DEVICE) {
 781                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 782                                 qla2x00_mark_device_lost(ha, fcport);
 783                         }
 784                 }
 785 #endif
 786         } else {
 787                 DEBUG2(printk(KERN_INFO
 788                     "%s failed: loop not ready\n",__func__);)
 789         }
 790
 791         if (ret == FAILED) {
 792                 DEBUG3(printk("%s(%ld): device reset failed\n",
 793                     __func__, ha->host_no));
 794                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 795                     __func__);
 796
 797                 goto eh_dev_reset_done;
 798         }
 799
 800         /*
 801          * If we are coming down the EH path, wait for all commands to
 802          * complete for the device.
 803          */
 804         if (cmd->device->host->eh_active) {
 805                 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 806                         ret = FAILED;
 807
 808                 if (ret == FAILED) {
 809                         DEBUG3(printk("%s(%ld): failed while waiting for "
 810                             "commands\n", __func__, ha->host_no));
 811                         qla_printk(KERN_INFO, ha,
 812                             "%s: failed while waiting for commands\n",
 813                             __func__);
 814
 815                         goto eh_dev_reset_done;
 816                 }
 817         }
 818
 819         qla_printk(KERN_INFO, ha,
 820             "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
 821
 822 eh_dev_reset_done:
 823         return ret;
 824 }
 825
 826 /**************************************************************************
 827 * qla2x00_eh_wait_for_pending_commands
 828 *
 829 * Description:
 830 *    Waits for all the commands to come back from the specified host.
 831 *
 832 * Input:
 833 *    ha - pointer to scsi_qla_host structure.
 834 *
 835 * Returns:
 836 *    1 : SUCCESS
 837 *    0 : FAILED
 838 *
 839 * Note:
 840 **************************************************************************/
 841 static int
 842 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 843 {
 844         int     cnt;
 845         int     status;
 846         srb_t           *sp;
 847         struct scsi_cmnd *cmd;
 848         unsigned long flags;
 849
 850         status = 1;
 851
 852         /*
 853          * Waiting for all commands for the designated target in the active
 854          * array
 855          */
 856         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 857                 spin_lock_irqsave(&ha->hardware_lock, flags);
 858                 sp = ha->outstanding_cmds[cnt];
 859                 if (sp) {
 860                         cmd = sp->cmd;
 861                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 862                         status = qla2x00_eh_wait_on_command(ha, cmd);
 863                         if (status == 0)
 864                                 break;
 865                 }
 866                 else {
 867                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 868                 }
 869         }
 870         return (status);
 871 }
 872
 873
 874 /**************************************************************************
 875 * qla2xxx_eh_bus_reset
 876 *
 877 * Description:
 878 *    The bus reset function will reset the bus and abort any executing
 879 *    commands.
 880 *
 881 * Input:
 882 *    cmd = Linux SCSI command packet of the command that cause the
 883 *          bus reset.
 884 *
 885 * Returns:
 886 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 887 *
 888 **************************************************************************/
 889 int
 890 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 891 {
 892         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 893         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 894         srb_t *sp;
 895         int ret;
 896         unsigned int id, lun;
 897         unsigned long serial;
 898
 899         ret = FAILED;
 900
 901         id = cmd->device->id;
 902         lun = cmd->device->lun;
 903         serial = cmd->serial_number;
 904
 905         sp = (srb_t *) CMD_SP(cmd);
 906         if (!sp || !fcport)
 907                 return ret;
 908
 909         qla_printk(KERN_INFO, ha,
 910             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 911
 912         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 913                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 914                 goto eh_bus_reset_done;
 915         }
 916
 917         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 918                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 919                         ret = SUCCESS;
 920         }
 921         if (ret == FAILED)
 922                 goto eh_bus_reset_done;
 923
 924         /* Waiting for our command in done_queue to be returned to OS.*/
 925         if (cmd->device->host->eh_active)
 926                 if (!qla2x00_eh_wait_for_pending_commands(ha))
 927                         ret = FAILED;
 928
 929 eh_bus_reset_done:
 930         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 931             (ret == FAILED) ? "failed" : "succeded");
 932
 933         return ret;
 934 }
 935
 936 /**************************************************************************
 937 * qla2xxx_eh_host_reset
 938 *
 939 * Description:
 940 *    The reset function will reset the Adapter.
 941 *
 942 * Input:
 943 *      cmd = Linux SCSI command packet of the command that cause the
 944 *            adapter reset.
 945 *
 946 * Returns:
 947 *      Either SUCCESS or FAILED.
 948 *
 949 * Note:
 950 **************************************************************************/
 951 int
 952 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 953 {
 954         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 955         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 956         srb_t *sp;
 957         int ret;
 958         unsigned int id, lun;
 959         unsigned long serial;
 960
 961         ret = FAILED;
 962
 963         id = cmd->device->id;
 964         lun = cmd->device->lun;
 965         serial = cmd->serial_number;
 966
 967         sp = (srb_t *) CMD_SP(cmd);
 968         if (!sp || !fcport)
 969                 return ret;
 970
 971         qla_printk(KERN_INFO, ha,
 972             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 973
 974         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 975                 goto eh_host_reset_lock;
 976
 977         /*
 978          * Fixme-may be dpc thread is active and processing
 979          * loop_resync,so wait a while for it to
 980          * be completed and then issue big hammer.Otherwise
 981          * it may cause I/O failure as big hammer marks the
 982          * devices as lost kicking of the port_down_timer
 983          * while dpc is stuck for the mailbox to complete.
 984          */
 985         qla2x00_wait_for_loop_ready(ha);
 986         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 987         if (qla2x00_abort_isp(ha)) {
 988                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 989                 /* failed. schedule dpc to try */
 990                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 991
 992                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 993                         goto eh_host_reset_lock;
 994         }
 995         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 996
 997         /* Waiting for our command in done_queue to be returned to OS.*/
 998         if (qla2x00_eh_wait_for_pending_commands(ha))
 999                 ret = SUCCESS;
1000
1001 eh_host_reset_lock:
1002         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1003             (ret == FAILED) ? "failed" : "succeded");
1004
1005         return ret;
1006 }
1007
1008 /*
1009 * qla2x00_loop_reset
1010 *      Issue loop reset.
1011 *
1012 * Input:
1013 *      ha = adapter block pointer.
1014 *
1015 * Returns:
1016 *      0 = success
1017 */
1018 static int
1019 qla2x00_loop_reset(scsi_qla_host_t *ha)
1020 {
1021         int status = QLA_SUCCESS;
1022         struct fc_port *fcport;
1023
1024         if (ha->flags.enable_lip_reset) {
1025                 status = qla2x00_lip_reset(ha);
1026         }
1027
1028         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1029                 list_for_each_entry(fcport, &ha->fcports, list) {
1030                         if (fcport->port_type != FCT_TARGET)
1031                                 continue;
1032
1033                         status = qla2x00_device_reset(ha, fcport);
1034                         if (status != QLA_SUCCESS)
1035                                 break;
1036                 }
1037         }
1038
1039         if (status == QLA_SUCCESS &&
1040                 ((!ha->flags.enable_target_reset &&
1041                   !ha->flags.enable_lip_reset) ||
1042                 ha->flags.enable_lip_full_login)) {
1043
1044                 status = qla2x00_full_login_lip(ha);
1045         }
1046
1047         /* Issue marker command only when we are going to start the I/O */
1048         ha->marker_needed = 1;
1049
1050         if (status) {
1051                 /* Empty */
1052                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1053                                 __func__,
1054                                 ha->host_no);)
1055         } else {
1056                 /* Empty */
1057                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1058                                 __func__,
1059                                 ha->host_no);)
1060         }
1061
1062         return(status);
1063 }
1064
1065 /*
1066  * qla2x00_device_reset
1067  *      Issue bus device reset message to the target.
1068  *
1069  * Input:
1070  *      ha = adapter block pointer.
1071  *      t = SCSI ID.
1072  *      TARGET_QUEUE_LOCK must be released.
1073  *      ADAPTER_STATE_LOCK must be released.
1074  *
1075  * Context:
1076  *      Kernel context.
1077  */
1078 static int
1079 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1080 {
1081         /* Abort Target command will clear Reservation */
1082         return ha->isp_ops.abort_target(reset_fcport);
1083 }
1084
1085 static int
1086 qla2xxx_slave_alloc(struct scsi_device *sdev)
1087 {
1088         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1089
1090         if (!rport)
1091                 return -ENXIO;
1092
1093         sdev->hostdata = rport->dd_data;
1094
1095         return 0;
1096 }
1097
1098 static int
1099 qla2xxx_slave_configure(struct scsi_device *sdev)
1100 {
1101         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1102         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1103
1104         if (sdev->tagged_supported)
1105                 scsi_activate_tcq(sdev, 32);
1106         else
1107                 scsi_deactivate_tcq(sdev, 32);
1108
1109         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1110
1111         return 0;
1112 }
1113
1114 static void
1115 qla2xxx_slave_destroy(struct scsi_device *sdev)
1116 {
1117         sdev->hostdata = NULL;
1118 }
1119
1120 static int
1121 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1122 {
1123         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1124         return sdev->queue_depth;
1125 }
1126
1127 static int
1128 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1129 {
1130         if (sdev->tagged_supported) {
1131                 scsi_set_tag_type(sdev, tag_type);
1132                 if (tag_type)
1133                         scsi_activate_tcq(sdev, sdev->queue_depth);
1134                 else
1135                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1136         } else
1137                 tag_type = 0;
1138
1139         return tag_type;
1140 }
1141
1142 /**
1143  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1144  * @ha: HA context
1145  *
1146  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1147  * supported addressing method.
1148  */
1149 static void
1150 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1151 {
1152         /* Assume a 32bit DMA mask. */
1153         ha->flags.enable_64bit_addressing = 0;
1154
1155         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1156                 /* Any upper-dword bits set? */
1157                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1158                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1159                         /* Ok, a 64bit DMA mask is applicable. */
1160                         ha->flags.enable_64bit_addressing = 1;
1161                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1162                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1163                         return;
1164                 }
1165         }
1166
1167         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1168         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1169 }
1170
1171 static int
1172 qla2x00_iospace_config(scsi_qla_host_t *ha)
1173 {
1174         unsigned long   pio, pio_len, pio_flags;
1175         unsigned long   mmio, mmio_len, mmio_flags;
1176
1177         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1178         pio = pci_resource_start(ha->pdev, 0);
1179         pio_len = pci_resource_len(ha->pdev, 0);
1180         pio_flags = pci_resource_flags(ha->pdev, 0);
1181         if (pio_flags & IORESOURCE_IO) {
1182                 if (pio_len < MIN_IOBASE_LEN) {
1183                         qla_printk(KERN_WARNING, ha,
1184                             "Invalid PCI I/O region size (%s)...\n",
1185                                 pci_name(ha->pdev));
1186                         pio = 0;
1187                 }
1188         } else {
1189                 qla_printk(KERN_WARNING, ha,
1190                     "region #0 not a PIO resource (%s)...\n",
1191                     pci_name(ha->pdev));
1192                 pio = 0;
1193         }
1194
1195         /* Use MMIO operations for all accesses. */
1196         mmio = pci_resource_start(ha->pdev, 1);
1197         mmio_len = pci_resource_len(ha->pdev, 1);
1198         mmio_flags = pci_resource_flags(ha->pdev, 1);
1199
1200         if (!(mmio_flags & IORESOURCE_MEM)) {
1201                 qla_printk(KERN_ERR, ha,
1202                     "region #0 not an MMIO resource (%s), aborting\n",
1203                     pci_name(ha->pdev));
1204                 goto iospace_error_exit;
1205         }
1206         if (mmio_len < MIN_IOBASE_LEN) {
1207                 qla_printk(KERN_ERR, ha,
1208                     "Invalid PCI mem region size (%s), aborting\n",
1209                         pci_name(ha->pdev));
1210                 goto iospace_error_exit;
1211         }
1212
1213         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1214                 qla_printk(KERN_WARNING, ha,
1215                     "Failed to reserve PIO/MMIO regions (%s)\n",
1216                     pci_name(ha->pdev));
1217
1218                 goto iospace_error_exit;
1219         }
1220
1221         ha->pio_address = pio;
1222         ha->pio_length = pio_len;
1223         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1224         if (!ha->iobase) {
1225                 qla_printk(KERN_ERR, ha,
1226                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1227
1228                 goto iospace_error_exit;
1229         }
1230
1231         return (0);
1232
1233 iospace_error_exit:
1234         return (-ENOMEM);
1235 }
1236
1237 static void
1238 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1239 {
1240         unsigned long flags = 0;
1241         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1242
1243         spin_lock_irqsave(&ha->hardware_lock, flags);
1244         ha->interrupts_on = 1;
1245         /* enable risc and host interrupts */
1246         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1247         RD_REG_WORD(&reg->ictrl);
1248         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1249
1250 }
1251
1252 static void
1253 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1254 {
1255         unsigned long flags = 0;
1256         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1257
1258         spin_lock_irqsave(&ha->hardware_lock, flags);
1259         ha->interrupts_on = 0;
1260         /* disable risc and host interrupts */
1261         WRT_REG_WORD(&reg->ictrl, 0);
1262         RD_REG_WORD(&reg->ictrl);
1263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1264 }
1265
1266 static void
1267 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1268 {
1269         unsigned long flags = 0;
1270         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1271
1272         spin_lock_irqsave(&ha->hardware_lock, flags);
1273         ha->interrupts_on = 1;
1274         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1275         RD_REG_DWORD(&reg->ictrl);
1276         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1277 }
1278
1279 static void
1280 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1281 {
1282         unsigned long flags = 0;
1283         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1284
1285         spin_lock_irqsave(&ha->hardware_lock, flags);
1286         ha->interrupts_on = 0;
1287         WRT_REG_DWORD(&reg->ictrl, 0);
1288         RD_REG_DWORD(&reg->ictrl);
1289         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1290 }
1291
1292 /*
1293  * PCI driver interface
1294  */
1295 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1296 {
1297         int     ret = -ENODEV;
1298         device_reg_t __iomem *reg;
1299         struct Scsi_Host *host;
1300         scsi_qla_host_t *ha;
1301         unsigned long   flags = 0;
1302         unsigned long   wait_switch = 0;
1303         char pci_info[20];
1304         char fw_str[30];
1305         fc_port_t *fcport;
1306
1307         if (pci_enable_device(pdev))
1308                 goto probe_out;
1309
1310         host = scsi_host_alloc(brd_info->sht ? brd_info->sht:
1311             &qla2x00_driver_template, sizeof(scsi_qla_host_t));
1312         if (host == NULL) {
1313                 printk(KERN_WARNING
1314                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1315                 goto probe_disable_device;
1316         }
1317
1318         /* Clear our data area */
1319         ha = (scsi_qla_host_t *)host->hostdata;
1320         memset(ha, 0, sizeof(scsi_qla_host_t));
1321
1322         ha->pdev = pdev;
1323         ha->host = host;
1324         ha->host_no = host->host_no;
1325         ha->brd_info = brd_info;
1326         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1327
1328         /* Configure PCI I/O space */
1329         ret = qla2x00_iospace_config(ha);
1330         if (ret)
1331                 goto probe_failed;
1332
1333         qla_printk(KERN_INFO, ha,
1334             "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1335             pdev->irq, ha->iobase);
1336
1337         spin_lock_init(&ha->hardware_lock);
1338
1339         ha->prev_topology = 0;
1340         ha->ports = MAX_BUSES;
1341         ha->init_cb_size = sizeof(init_cb_t);
1342         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1343
1344         /* Assign ISP specific operations. */
1345         ha->isp_ops.pci_config          = qla2100_pci_config;
1346         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1347         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1348         ha->isp_ops.config_rings        = qla2x00_config_rings;
1349         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1350         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1351         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1352         ha->isp_ops.load_risc           = qla2x00_load_risc;
1353         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1354         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1355         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1356         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1357         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1358         ha->isp_ops.abort_command       = qla2x00_abort_command;
1359         ha->isp_ops.abort_target        = qla2x00_abort_target;
1360         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1361         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1362         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1363         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1364         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1365         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1366         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1367         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1368         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1369         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1370         if (IS_QLA2100(ha)) {
1371                 host->max_id = MAX_TARGETS_2100;
1372                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1373                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1374                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1375                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1376                 host->sg_tablesize = 32;
1377                 ha->gid_list_info_size = 4;
1378         } else if (IS_QLA2200(ha)) {
1379                 host->max_id = MAX_TARGETS_2200;
1380                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1381                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1382                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1383                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1384                 ha->gid_list_info_size = 4;
1385         } else if (IS_QLA23XX(ha)) {
1386                 host->max_id = MAX_TARGETS_2200;
1387                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1388                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1389                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1390                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1391                 ha->isp_ops.pci_config = qla2300_pci_config;
1392                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1393                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1394                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1395                 ha->gid_list_info_size = 6;
1396         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1397                 host->max_id = MAX_TARGETS_2200;
1398                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1399                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1400                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1401                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1402                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1403                 ha->mgmt_svr_loop_id = 10;
1404                 ha->isp_ops.pci_config = qla24xx_pci_config;
1405                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1406                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1407                 ha->isp_ops.config_rings = qla24xx_config_rings;
1408                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1409                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1410                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1411                 ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1412                 if (ql2xfwloadbin)
1413                         ha->isp_ops.load_risc = qla24xx_load_risc_hotplug;
1414                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1415                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1416                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1417                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1418                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1419                 ha->isp_ops.abort_command = qla24xx_abort_command;
1420                 ha->isp_ops.abort_target = qla24xx_abort_target;
1421                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1422                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1423                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1424                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1425                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1426                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1427                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1428                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1429                 ha->gid_list_info_size = 8;
1430         }
1431         host->can_queue = ha->request_q_length + 128;
1432
1433         /* load the F/W, read paramaters, and init the H/W */
1434         ha->instance = num_hosts;
1435
1436         init_MUTEX(&ha->mbx_cmd_sem);
1437         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1438
1439         INIT_LIST_HEAD(&ha->list);
1440         INIT_LIST_HEAD(&ha->fcports);
1441         INIT_LIST_HEAD(&ha->rscn_fcports);
1442
1443         /*
1444          * These locks are used to prevent more than one CPU
1445          * from modifying the queue at the same time. The
1446          * higher level "host_lock" will reduce most
1447          * contention for these locks.
1448          */
1449         spin_lock_init(&ha->mbx_reg_lock);
1450
1451         ha->dpc_pid = -1;
1452         init_completion(&ha->dpc_inited);
1453         init_completion(&ha->dpc_exited);
1454
1455         qla2x00_config_dma_addressing(ha);
1456         if (qla2x00_mem_alloc(ha)) {
1457                 qla_printk(KERN_WARNING, ha,
1458                     "[ERROR] Failed to allocate memory for adapter\n");
1459
1460                 ret = -ENOMEM;
1461                 goto probe_failed;
1462         }
1463
1464         if (qla2x00_initialize_adapter(ha) &&
1465             !(ha->device_flags & DFLG_NO_CABLE)) {
1466
1467                 qla_printk(KERN_WARNING, ha,
1468                     "Failed to initialize adapter\n");
1469
1470                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1471                     "Adapter flags %x.\n",
1472                     ha->host_no, ha->device_flags));
1473
1474                 ret = -ENODEV;
1475                 goto probe_failed;
1476         }
1477
1478         /*
1479          * Startup the kernel thread for this host adapter
1480          */
1481         ha->dpc_should_die = 0;
1482         ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1483         if (ha->dpc_pid < 0) {
1484                 qla_printk(KERN_WARNING, ha,
1485                     "Unable to start DPC thread!\n");
1486
1487                 ret = -ENODEV;
1488                 goto probe_failed;
1489         }
1490         wait_for_completion(&ha->dpc_inited);
1491
1492         host->this_id = 255;
1493         host->cmd_per_lun = 3;
1494         host->unique_id = ha->instance;
1495         host->max_cmd_len = MAX_CMDSZ;
1496         host->max_channel = ha->ports - 1;
1497         host->max_lun = MAX_LUNS;
1498         host->transportt = qla2xxx_transport_template;
1499
1500         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1501             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1502         if (ret) {
1503                 qla_printk(KERN_WARNING, ha,
1504                     "Failed to reserve interrupt %d already in use.\n",
1505                     pdev->irq);
1506                 goto probe_failed;
1507         }
1508         host->irq = pdev->irq;
1509
1510         /* Initialized the timer */
1511         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1512
1513         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1514             ha->host_no, ha));
1515
1516         ha->isp_ops.disable_intrs(ha);
1517
1518         spin_lock_irqsave(&ha->hardware_lock, flags);
1519         reg = ha->iobase;
1520         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1521                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1522                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1523         } else {
1524                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1525                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1526                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1527
1528                 /* Enable proper parity */
1529                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1530                         if (IS_QLA2300(ha))
1531                                 /* SRAM parity */
1532                                 WRT_REG_WORD(&reg->isp.hccr,
1533                                     (HCCR_ENABLE_PARITY + 0x1));
1534                         else
1535                                 /* SRAM, Instruction RAM and GP RAM parity */
1536                                 WRT_REG_WORD(&reg->isp.hccr,
1537                                     (HCCR_ENABLE_PARITY + 0x7));
1538                 }
1539         }
1540         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1541
1542         ha->isp_ops.enable_intrs(ha);
1543
1544         /* v2.19.5b6 */
1545         /*
1546          * Wait around max loop_reset_delay secs for the devices to come
1547          * on-line. We don't want Linux scanning before we are ready.
1548          *
1549          */
1550         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1551             time_before(jiffies,wait_switch) &&
1552              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1553              && (ha->device_flags & SWITCH_FOUND) ;) {
1554
1555                 qla2x00_check_fabric_devices(ha);
1556
1557                 msleep(10);
1558         }
1559
1560         pci_set_drvdata(pdev, ha);
1561         ha->flags.init_done = 1;
1562         num_hosts++;
1563
1564         ret = scsi_add_host(host, &pdev->dev);
1565         if (ret)
1566                 goto probe_failed;
1567
1568         qla2x00_alloc_sysfs_attr(ha);
1569
1570         qla2x00_init_host_attr(ha);
1571
1572         qla_printk(KERN_INFO, ha, "\n"
1573             " QLogic Fibre Channel HBA Driver: %s\n"
1574             "  QLogic %s - %s\n"
1575             "  %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1576             ha->model_number, ha->model_desc ? ha->model_desc: "",
1577             ha->brd_info->isp_name, ha->isp_ops.pci_info_str(ha, pci_info),
1578             pci_name(pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1579             ha->host_no, ha->isp_ops.fw_version_str(ha, fw_str));
1580
1581         /* Go with fc_rport registration. */
1582         list_for_each_entry(fcport, &ha->fcports, list)
1583                 qla2x00_reg_remote_port(ha, fcport);
1584
1585         return 0;
1586
1587 probe_failed:
1588         qla2x00_free_device(ha);
1589
1590         scsi_host_put(host);
1591
1592 probe_disable_device:
1593         pci_disable_device(pdev);
1594
1595 probe_out:
1596         return ret;
1597 }
1598 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1599
1600 void qla2x00_remove_one(struct pci_dev *pdev)
1601 {
1602         scsi_qla_host_t *ha;
1603
1604         ha = pci_get_drvdata(pdev);
1605
1606         qla2x00_free_sysfs_attr(ha);
1607
1608         fc_remove_host(ha->host);
1609
1610         scsi_remove_host(ha->host);
1611
1612         qla2x00_free_device(ha);
1613
1614         scsi_host_put(ha->host);
1615
1616         pci_set_drvdata(pdev, NULL);
1617 }
1618 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1619
1620 static void
1621 qla2x00_free_device(scsi_qla_host_t *ha)
1622 {
1623         int ret;
1624
1625         /* Abort any outstanding IO descriptors. */
1626         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1627                 qla2x00_cancel_io_descriptors(ha);
1628
1629         /* Disable timer */
1630         if (ha->timer_active)
1631                 qla2x00_stop_timer(ha);
1632
1633         /* Kill the kernel thread for this host */
1634         if (ha->dpc_pid >= 0) {
1635                 ha->dpc_should_die = 1;
1636                 wmb();
1637                 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1638                 if (ret) {
1639                         qla_printk(KERN_ERR, ha,
1640                             "Unable to signal DPC thread -- (%d)\n", ret);
1641
1642                         /* TODO: SOMETHING MORE??? */
1643                 } else {
1644                         wait_for_completion(&ha->dpc_exited);
1645                 }
1646         }
1647
1648         /* Stop currently executing firmware. */
1649         qla2x00_stop_firmware(ha);
1650
1651         /* turn-off interrupts on the card */
1652         if (ha->interrupts_on)
1653                 ha->isp_ops.disable_intrs(ha);
1654
1655         qla2x00_mem_free(ha);
1656
1657         ha->flags.online = 0;
1658
1659         /* Detach interrupts */
1660         if (ha->pdev->irq)
1661                 free_irq(ha->pdev->irq, ha);
1662
1663         /* release io space registers  */
1664         if (ha->iobase)
1665                 iounmap(ha->iobase);
1666         pci_release_regions(ha->pdev);
1667
1668         pci_disable_device(ha->pdev);
1669 }
1670
1671 /*
1672  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1673  *
1674  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1675  *
1676  * Return: None.
1677  *
1678  * Context:
1679  */
1680 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1681     int do_login)
1682 {
1683         if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1684                 fc_remote_port_block(fcport->rport);
1685         /*
1686          * We may need to retry the login, so don't change the state of the
1687          * port but do the retries.
1688          */
1689         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1690                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1691
1692         if (!do_login)
1693                 return;
1694
1695         if (fcport->login_retry == 0) {
1696                 fcport->login_retry = ha->login_retry_count;
1697                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1698
1699                 DEBUG(printk("scsi(%ld): Port login retry: "
1700                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1701                     "id = 0x%04x retry cnt=%d\n",
1702                     ha->host_no,
1703                     fcport->port_name[0],
1704                     fcport->port_name[1],
1705                     fcport->port_name[2],
1706                     fcport->port_name[3],
1707                     fcport->port_name[4],
1708                     fcport->port_name[5],
1709                     fcport->port_name[6],
1710                     fcport->port_name[7],
1711                     fcport->loop_id,
1712                     fcport->login_retry));
1713         }
1714 }
1715
1716 /*
1717  * qla2x00_mark_all_devices_lost
1718  *      Updates fcport state when device goes offline.
1719  *
1720  * Input:
1721  *      ha = adapter block pointer.
1722  *      fcport = port structure pointer.
1723  *
1724  * Return:
1725  *      None.
1726  *
1727  * Context:
1728  */
1729 void
1730 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1731 {
1732         fc_port_t *fcport;
1733
1734         list_for_each_entry(fcport, &ha->fcports, list) {
1735                 if (fcport->port_type != FCT_TARGET)
1736                         continue;
1737
1738                 /*
1739                  * No point in marking the device as lost, if the device is
1740                  * already DEAD.
1741                  */
1742                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1743                         continue;
1744                 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1745                         fc_remote_port_block(fcport->rport);
1746                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1747         }
1748 }
1749
1750 /*
1751 * qla2x00_mem_alloc
1752 *      Allocates adapter memory.
1753 *
1754 * Returns:
1755 *      0  = success.
1756 *      1  = failure.
1757 */
1758 static uint8_t
1759 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1760 {
1761         char    name[16];
1762         uint8_t   status = 1;
1763         int     retry= 10;
1764
1765         do {
1766                 /*
1767                  * This will loop only once if everything goes well, else some
1768                  * number of retries will be performed to get around a kernel
1769                  * bug where available mem is not allocated until after a
1770                  * little delay and a retry.
1771                  */
1772                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1773                     (ha->request_q_length + 1) * sizeof(request_t),
1774                     &ha->request_dma, GFP_KERNEL);
1775                 if (ha->request_ring == NULL) {
1776                         qla_printk(KERN_WARNING, ha,
1777                             "Memory Allocation failed - request_ring\n");
1778
1779                         qla2x00_mem_free(ha);
1780                         msleep(100);
1781
1782                         continue;
1783                 }
1784
1785                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1786                     (ha->response_q_length + 1) * sizeof(response_t),
1787                     &ha->response_dma, GFP_KERNEL);
1788                 if (ha->response_ring == NULL) {
1789                         qla_printk(KERN_WARNING, ha,
1790                             "Memory Allocation failed - response_ring\n");
1791
1792                         qla2x00_mem_free(ha);
1793                         msleep(100);
1794
1795                         continue;
1796                 }
1797
1798                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1799                     &ha->gid_list_dma, GFP_KERNEL);
1800                 if (ha->gid_list == NULL) {
1801                         qla_printk(KERN_WARNING, ha,
1802                             "Memory Allocation failed - gid_list\n");
1803
1804                         qla2x00_mem_free(ha);
1805                         msleep(100);
1806
1807                         continue;
1808                 }
1809
1810                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1811                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1812                 if (ha->rlc_rsp == NULL) {
1813                         qla_printk(KERN_WARNING, ha,
1814                                 "Memory Allocation failed - rlc");
1815
1816                         qla2x00_mem_free(ha);
1817                         msleep(100);
1818
1819                         continue;
1820                 }
1821
1822                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1823                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1824                     DMA_POOL_SIZE, 8, 0);
1825                 if (ha->s_dma_pool == NULL) {
1826                         qla_printk(KERN_WARNING, ha,
1827                             "Memory Allocation failed - s_dma_pool\n");
1828
1829                         qla2x00_mem_free(ha);
1830                         msleep(100);
1831
1832                         continue;
1833                 }
1834
1835                 /* get consistent memory allocated for init control block */
1836                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1837                     &ha->init_cb_dma);
1838                 if (ha->init_cb == NULL) {
1839                         qla_printk(KERN_WARNING, ha,
1840                             "Memory Allocation failed - init_cb\n");
1841
1842                         qla2x00_mem_free(ha);
1843                         msleep(100);
1844
1845                         continue;
1846                 }
1847                 memset(ha->init_cb, 0, ha->init_cb_size);
1848
1849                 /* Get consistent memory allocated for Get Port Database cmd */
1850                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1851                     &ha->iodesc_pd_dma);
1852                 if (ha->iodesc_pd == NULL) {
1853                         /* error */
1854                         qla_printk(KERN_WARNING, ha,
1855                             "Memory Allocation failed - iodesc_pd\n");
1856
1857                         qla2x00_mem_free(ha);
1858                         msleep(100);
1859
1860                         continue;
1861                 }
1862                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1863
1864                 /* Allocate ioctl related memory. */
1865                 if (qla2x00_alloc_ioctl_mem(ha)) {
1866                         qla_printk(KERN_WARNING, ha,
1867                             "Memory Allocation failed - ioctl_mem\n");
1868
1869                         qla2x00_mem_free(ha);
1870                         msleep(100);
1871
1872                         continue;
1873                 }
1874
1875                 if (qla2x00_allocate_sp_pool(ha)) {
1876                         qla_printk(KERN_WARNING, ha,
1877                             "Memory Allocation failed - "
1878                             "qla2x00_allocate_sp_pool()\n");
1879
1880                         qla2x00_mem_free(ha);
1881                         msleep(100);
1882
1883                         continue;
1884                 }
1885
1886                 /* Allocate memory for SNS commands */
1887                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1888                         /* Get consistent memory allocated for SNS commands */
1889                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1890                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1891                             GFP_KERNEL);
1892                         if (ha->sns_cmd == NULL) {
1893                                 /* error */
1894                                 qla_printk(KERN_WARNING, ha,
1895                                     "Memory Allocation failed - sns_cmd\n");
1896
1897                                 qla2x00_mem_free(ha);
1898                                 msleep(100);
1899
1900                                 continue;
1901                         }
1902                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1903                 } else {
1904                         /* Get consistent memory allocated for MS IOCB */
1905                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1906                             &ha->ms_iocb_dma);
1907                         if (ha->ms_iocb == NULL) {
1908                                 /* error */
1909                                 qla_printk(KERN_WARNING, ha,
1910                                     "Memory Allocation failed - ms_iocb\n");
1911
1912                                 qla2x00_mem_free(ha);
1913                                 msleep(100);
1914
1915                                 continue;
1916                         }
1917                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1918
1919                         /*
1920                          * Get consistent memory allocated for CT SNS
1921                          * commands
1922                          */
1923                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1924                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1925                             GFP_KERNEL);
1926                         if (ha->ct_sns == NULL) {
1927                                 /* error */
1928                                 qla_printk(KERN_WARNING, ha,
1929                                     "Memory Allocation failed - ct_sns\n");
1930
1931                                 qla2x00_mem_free(ha);
1932                                 msleep(100);
1933
1934                                 continue;
1935                         }
1936                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1937                 }
1938
1939                 /* Done all allocations without any error. */
1940                 status = 0;
1941
1942         } while (retry-- && status != 0);
1943
1944         if (status) {
1945                 printk(KERN_WARNING
1946                         "%s(): **** FAILED ****\n", __func__);
1947         }
1948
1949         return(status);
1950 }
1951
1952 /*
1953 * qla2x00_mem_free
1954 *      Frees all adapter allocated memory.
1955 *
1956 * Input:
1957 *      ha = adapter block pointer.
1958 */
1959 static void
1960 qla2x00_mem_free(scsi_qla_host_t *ha)
1961 {
1962         struct list_head        *fcpl, *fcptemp;
1963         fc_port_t       *fcport;
1964         unsigned int    wtime;/* max wait time if mbx cmd is busy. */
1965
1966         if (ha == NULL) {
1967                 /* error */
1968                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1969                 return;
1970         }
1971
1972         /* Make sure all other threads are stopped. */
1973         wtime = 60 * 1000;
1974         while (ha->dpc_wait && wtime)
1975                 wtime = msleep_interruptible(wtime);
1976
1977         /* free ioctl memory */
1978         qla2x00_free_ioctl_mem(ha);
1979
1980         /* free sp pool */
1981         qla2x00_free_sp_pool(ha);
1982
1983         if (ha->sns_cmd)
1984                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1985                     ha->sns_cmd, ha->sns_cmd_dma);
1986
1987         if (ha->ct_sns)
1988                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1989                     ha->ct_sns, ha->ct_sns_dma);
1990
1991         if (ha->ms_iocb)
1992                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1993
1994         if (ha->iodesc_pd)
1995                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1996
1997         if (ha->init_cb)
1998                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
1999
2000         if (ha->s_dma_pool)
2001                 dma_pool_destroy(ha->s_dma_pool);
2002
2003         if (ha->rlc_rsp)
2004                 dma_free_coherent(&ha->pdev->dev,
2005                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2006                     ha->rlc_rsp_dma);
2007
2008         if (ha->gid_list)
2009                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2010                     ha->gid_list_dma);
2011
2012         if (ha->response_ring)
2013                 dma_free_coherent(&ha->pdev->dev,
2014                     (ha->response_q_length + 1) * sizeof(response_t),
2015                     ha->response_ring, ha->response_dma);
2016
2017         if (ha->request_ring)
2018                 dma_free_coherent(&ha->pdev->dev,
2019                     (ha->request_q_length + 1) * sizeof(request_t),
2020                     ha->request_ring, ha->request_dma);
2021
2022         ha->sns_cmd = NULL;
2023         ha->sns_cmd_dma = 0;
2024         ha->ct_sns = NULL;
2025         ha->ct_sns_dma = 0;
2026         ha->ms_iocb = NULL;
2027         ha->ms_iocb_dma = 0;
2028         ha->iodesc_pd = NULL;
2029         ha->iodesc_pd_dma = 0;
2030         ha->init_cb = NULL;
2031         ha->init_cb_dma = 0;
2032
2033         ha->s_dma_pool = NULL;
2034
2035         ha->rlc_rsp = NULL;
2036         ha->rlc_rsp_dma = 0;
2037         ha->gid_list = NULL;
2038         ha->gid_list_dma = 0;
2039
2040         ha->response_ring = NULL;
2041         ha->response_dma = 0;
2042         ha->request_ring = NULL;
2043         ha->request_dma = 0;
2044
2045         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2046                 fcport = list_entry(fcpl, fc_port_t, list);
2047
2048                 /* fc ports */
2049                 list_del_init(&fcport->list);
2050                 kfree(fcport);
2051         }
2052         INIT_LIST_HEAD(&ha->fcports);
2053
2054         if (ha->fw_dump)
2055                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2056
2057         vfree(ha->fw_dump24);
2058
2059         vfree(ha->fw_dump_buffer);
2060
2061         ha->fw_dump = NULL;
2062         ha->fw_dump24 = NULL;
2063         ha->fw_dumped = 0;
2064         ha->fw_dump_reading = 0;
2065         ha->fw_dump_buffer = NULL;
2066 }
2067
2068 /*
2069  * qla2x00_allocate_sp_pool
2070  *       This routine is called during initialization to allocate
2071  *       memory for local srb_t.
2072  *
2073  * Input:
2074  *       ha   = adapter block pointer.
2075  *
2076  * Context:
2077  *      Kernel context.
2078  *
2079  * Note: Sets the ref_count for non Null sp to one.
2080  */
2081 static int
2082 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2083 {
2084         int      rval;
2085
2086         rval = QLA_SUCCESS;
2087         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2088             mempool_free_slab, srb_cachep);
2089         if (ha->srb_mempool == NULL) {
2090                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2091                 rval = QLA_FUNCTION_FAILED;
2092         }
2093         return (rval);
2094 }
2095
2096 /*
2097  *  This routine frees all adapter allocated memory.
2098  *
2099  */
2100 static void
2101 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2102 {
2103         if (ha->srb_mempool) {
2104                 mempool_destroy(ha->srb_mempool);
2105                 ha->srb_mempool = NULL;
2106         }
2107 }
2108
2109 /**************************************************************************
2110 * qla2x00_do_dpc
2111 *   This kernel thread is a task that is schedule by the interrupt handler
2112 *   to perform the background processing for interrupts.
2113 *
2114 * Notes:
2115 * This task always run in the context of a kernel thread.  It
2116 * is kick-off by the driver's detect code and starts up
2117 * up one per adapter. It immediately goes to sleep and waits for
2118 * some fibre event.  When either the interrupt handler or
2119 * the timer routine detects a event it will one of the task
2120 * bits then wake us up.
2121 **************************************************************************/
2122 static int
2123 qla2x00_do_dpc(void *data)
2124 {
2125         DECLARE_MUTEX_LOCKED(sem);
2126         scsi_qla_host_t *ha;
2127         fc_port_t       *fcport;
2128         uint8_t         status;
2129         uint16_t        next_loopid;
2130
2131         ha = (scsi_qla_host_t *)data;
2132
2133         lock_kernel();
2134
2135         daemonize("%s_dpc", ha->host_str);
2136         allow_signal(SIGHUP);
2137
2138         ha->dpc_wait = &sem;
2139
2140         set_user_nice(current, -20);
2141
2142         unlock_kernel();
2143
2144         complete(&ha->dpc_inited);
2145
2146         while (1) {
2147                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2148
2149                 if (down_interruptible(&sem))
2150                         break;
2151
2152                 if (ha->dpc_should_die)
2153                         break;
2154
2155                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2156
2157                 /* Initialization not yet finished. Don't do anything yet. */
2158                 if (!ha->flags.init_done || ha->dpc_active)
2159                         continue;
2160
2161                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2162
2163                 ha->dpc_active = 1;
2164
2165                 if (ha->flags.mbox_busy) {
2166                         ha->dpc_active = 0;
2167                         continue;
2168                 }
2169
2170                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2171
2172                         DEBUG(printk("scsi(%ld): dpc: sched "
2173                             "qla2x00_abort_isp ha = %p\n",
2174                             ha->host_no, ha));
2175                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2176                             &ha->dpc_flags))) {
2177
2178                                 if (qla2x00_abort_isp(ha)) {
2179                                         /* failed. retry later */
2180                                         set_bit(ISP_ABORT_NEEDED,
2181                                             &ha->dpc_flags);
2182                                 }
2183                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2184                         }
2185                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2186                             ha->host_no));
2187                 }
2188
2189                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2190                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2191
2192                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2193                             ha->host_no));
2194
2195                         qla2x00_rst_aen(ha);
2196                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2197                 }
2198
2199                 /* Retry each device up to login retry count */
2200                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2201                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2202                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2203
2204                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2205                             ha->host_no));
2206
2207                         next_loopid = 0;
2208                         list_for_each_entry(fcport, &ha->fcports, list) {
2209                                 if (fcport->port_type != FCT_TARGET)
2210                                         continue;
2211
2212                                 /*
2213                                  * If the port is not ONLINE then try to login
2214                                  * to it if we haven't run out of retries.
2215                                  */
2216                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2217                                     fcport->login_retry) {
2218
2219                                         fcport->login_retry--;
2220                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2221                                                 if (fcport->flags &
2222                                                     FCF_TAPE_PRESENT)
2223                                                         ha->isp_ops.fabric_logout(
2224                                                             ha, fcport->loop_id,
2225                                                             fcport->d_id.b.domain,
2226                                                             fcport->d_id.b.area,
2227                                                             fcport->d_id.b.al_pa);
2228                                                 status = qla2x00_fabric_login(
2229                                                     ha, fcport, &next_loopid);
2230                                         } else
2231                                                 status =
2232                                                     qla2x00_local_device_login(
2233                                                         ha, fcport->loop_id);
2234
2235                                         if (status == QLA_SUCCESS) {
2236                                                 fcport->old_loop_id = fcport->loop_id;
2237
2238                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2239                                                     ha->host_no, fcport->loop_id));
2240
2241                                                 fcport->port_login_retry_count =
2242                                                     ha->port_down_retry_count * PORT_RETRY_TIME;
2243                                                 atomic_set(&fcport->state, FCS_ONLINE);
2244                                                 atomic_set(&fcport->port_down_timer,
2245                                                     ha->port_down_retry_count * PORT_RETRY_TIME);
2246
2247                                                 fcport->login_retry = 0;
2248                                         } else if (status == 1) {
2249                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2250                                                 /* retry the login again */
2251                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2252                                                     ha->host_no,
2253                                                     fcport->login_retry, fcport->loop_id));
2254                                         } else {
2255                                                 fcport->login_retry = 0;
2256                                         }
2257                                 }
2258                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2259                                         break;
2260                         }
2261                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2262                             ha->host_no));
2263                 }
2264
2265                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2266                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2267
2268                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2269                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2270                             ha->host_no));
2271
2272                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2273
2274                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2275                             ha->host_no));
2276                 }
2277
2278                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2279
2280                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2281                             ha->host_no));
2282
2283                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2284                             &ha->dpc_flags))) {
2285
2286                                 qla2x00_loop_resync(ha);
2287
2288                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2289                         }
2290
2291                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2292                             ha->host_no));
2293                 }
2294
2295                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2296
2297                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2298                             ha->host_no));
2299
2300                         qla2x00_rescan_fcports(ha);
2301
2302                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2303                             "end.\n",
2304                             ha->host_no));
2305                 }
2306
2307                 if (!ha->interrupts_on)
2308                         ha->isp_ops.enable_intrs(ha);
2309
2310                 ha->dpc_active = 0;
2311         } /* End of while(1) */
2312
2313         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2314
2315         /*
2316          * Make sure that nobody tries to wake us up again.
2317          */
2318         ha->dpc_wait = NULL;
2319         ha->dpc_active = 0;
2320
2321         complete_and_exit(&ha->dpc_exited, 0);
2322 }
2323
2324 /*
2325 *  qla2x00_rst_aen
2326 *      Processes asynchronous reset.
2327 *
2328 * Input:
2329 *      ha  = adapter block pointer.
2330 */
2331 static void
2332 qla2x00_rst_aen(scsi_qla_host_t *ha)
2333 {
2334         if (ha->flags.online && !ha->flags.reset_active &&
2335             !atomic_read(&ha->loop_down_timer) &&
2336             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2337                 do {
2338                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2339
2340                         /*
2341                          * Issue marker command only when we are going to start
2342                          * the I/O.
2343                          */
2344                         ha->marker_needed = 1;
2345                 } while (!atomic_read(&ha->loop_down_timer) &&
2346                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2347         }
2348 }
2349
2350 static void
2351 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2352 {
2353         struct scsi_cmnd *cmd = sp->cmd;
2354
2355         if (sp->flags & SRB_DMA_VALID) {
2356                 if (cmd->use_sg) {
2357                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2358                             cmd->use_sg, cmd->sc_data_direction);
2359                 } else if (cmd->request_bufflen) {
2360                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2361                             cmd->request_bufflen, cmd->sc_data_direction);
2362                 }
2363                 sp->flags &= ~SRB_DMA_VALID;
2364         }
2365         CMD_SP(cmd) = NULL;
2366 }
2367
2368 void
2369 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2370 {
2371         struct scsi_cmnd *cmd = sp->cmd;
2372
2373         qla2x00_sp_free_dma(ha, sp);
2374
2375         mempool_free(sp, ha->srb_mempool);
2376
2377         cmd->scsi_done(cmd);
2378 }
2379
2380 /**************************************************************************
2381 *   qla2x00_timer
2382 *
2383 * Description:
2384 *   One second timer
2385 *
2386 * Context: Interrupt
2387 ***************************************************************************/
2388 static void
2389 qla2x00_timer(scsi_qla_host_t *ha)
2390 {
2391         unsigned long   cpu_flags = 0;
2392         fc_port_t       *fcport;
2393         int             start_dpc = 0;
2394         int             index;
2395         srb_t           *sp;
2396         int             t;
2397
2398         /*
2399          * Ports - Port down timer.
2400          *
2401          * Whenever, a port is in the LOST state we start decrementing its port
2402          * down timer every second until it reaches zero. Once  it reaches zero
2403          * the port it marked DEAD.
2404          */
2405         t = 0;
2406         list_for_each_entry(fcport, &ha->fcports, list) {
2407                 if (fcport->port_type != FCT_TARGET)
2408                         continue;
2409
2410                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2411
2412                         if (atomic_read(&fcport->port_down_timer) == 0)
2413                                 continue;
2414
2415                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2416                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2417
2418                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2419                             "%d remaining\n",
2420                             ha->host_no,
2421                             t, atomic_read(&fcport->port_down_timer)));
2422                 }
2423                 t++;
2424         } /* End of for fcport  */
2425
2426
2427         /* Loop down handler. */
2428         if (atomic_read(&ha->loop_down_timer) > 0 &&
2429             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2430
2431                 if (atomic_read(&ha->loop_down_timer) ==
2432                     ha->loop_down_abort_time) {
2433
2434                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2435                             "queues before time expire\n",
2436                             ha->host_no));
2437
2438                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2439                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2440
2441                         /* Schedule an ISP abort to return any tape commands. */
2442                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2443                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2444                             index++) {
2445                                 fc_port_t *sfcp;
2446
2447                                 sp = ha->outstanding_cmds[index];
2448                                 if (!sp)
2449                                         continue;
2450                                 sfcp = sp->fcport;
2451                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2452                                         continue;
2453
2454                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2455                                 break;
2456                         }
2457                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2458
2459                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2460                         start_dpc++;
2461                 }
2462
2463                 /* if the loop has been down for 4 minutes, reinit adapter */
2464                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2465                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2466                             "restarting queues.\n",
2467                             ha->host_no));
2468
2469                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2470                         start_dpc++;
2471
2472                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2473                                 DEBUG(printk("scsi(%ld): Loop down - "
2474                                     "aborting ISP.\n",
2475                                     ha->host_no));
2476                                 qla_printk(KERN_WARNING, ha,
2477                                     "Loop down - aborting ISP.\n");
2478
2479                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2480                         }
2481                 }
2482                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2483                     ha->host_no,
2484                     atomic_read(&ha->loop_down_timer)));
2485         }
2486
2487         /* Schedule the DPC routine if needed */
2488         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2489             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2490             start_dpc ||
2491             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2492             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2493             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2494             ha->dpc_wait && !ha->dpc_active) {
2495
2496                 up(ha->dpc_wait);
2497         }
2498
2499         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2500 }
2501
2502 /* XXX(hch): crude hack to emulate a down_timeout() */
2503 int
2504 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2505 {
2506         const unsigned int step = 100; /* msecs */
2507         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2508
2509         do {
2510                 if (!down_trylock(sema))
2511                         return 0;
2512                 if (msleep_interruptible(step))
2513                         break;
2514         } while (--iterations >= 0);
2515
2516         return -ETIMEDOUT;
2517 }
2518
2519 static struct qla_board_info qla_board_tbl[] = {
2520         {
2521                 .drv_name       = "qla2400",
2522                 .isp_name       = "ISP2422",
2523                 .fw_fname       = "ql2400_fw.bin",
2524                 .sht            = &qla24xx_driver_template,
2525         },
2526         {
2527                 .drv_name       = "qla2400",
2528                 .isp_name       = "ISP2432",
2529                 .fw_fname       = "ql2400_fw.bin",
2530                 .sht            = &qla24xx_driver_template,
2531         },
2532 };
2533
2534 static struct pci_device_id qla2xxx_pci_tbl[] = {
2535         {
2536                 .vendor         = PCI_VENDOR_ID_QLOGIC,
2537                 .device         = PCI_DEVICE_ID_QLOGIC_ISP2422,
2538                 .subvendor      = PCI_ANY_ID,
2539                 .subdevice      = PCI_ANY_ID,
2540                 .driver_data    = (unsigned long)&qla_board_tbl[0],
2541         },
2542         {
2543                 .vendor         = PCI_VENDOR_ID_QLOGIC,
2544                 .device         = PCI_DEVICE_ID_QLOGIC_ISP2432,
2545                 .subvendor      = PCI_ANY_ID,
2546                 .subdevice      = PCI_ANY_ID,
2547                 .driver_data    = (unsigned long)&qla_board_tbl[1],
2548         },
2549         {0, 0},
2550 };
2551 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2552
2553 static int __devinit
2554 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2555 {
2556         return qla2x00_probe_one(pdev,
2557             (struct qla_board_info *)id->driver_data);
2558 }
2559
2560 static void __devexit
2561 qla2xxx_remove_one(struct pci_dev *pdev)
2562 {
2563         qla2x00_remove_one(pdev);
2564 }
2565
2566 static struct pci_driver qla2xxx_pci_driver = {
2567         .name           = "qla2xxx",
2568         .id_table       = qla2xxx_pci_tbl,
2569         .probe          = qla2xxx_probe_one,
2570         .remove         = __devexit_p(qla2xxx_remove_one),
2571 };
2572
2573 /**
2574  * qla2x00_module_init - Module initialization.
2575  **/
2576 static int __init
2577 qla2x00_module_init(void)
2578 {
2579         int ret = 0;
2580
2581         /* Allocate cache for SRBs. */
2582         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2583             SLAB_HWCACHE_ALIGN, NULL, NULL);
2584         if (srb_cachep == NULL) {
2585                 printk(KERN_ERR
2586                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2587                 return -ENOMEM;
2588         }
2589
2590         /* Derive version string. */
2591         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2592 #if DEBUG_QLA2100
2593         strcat(qla2x00_version_str, "-debug");
2594 #endif
2595         qla2xxx_transport_template =
2596             fc_attach_transport(&qla2xxx_transport_functions);
2597         if (!qla2xxx_transport_template)
2598                 return -ENODEV;
2599
2600         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2601         ret = pci_module_init(&qla2xxx_pci_driver);
2602         if (ret) {
2603                 kmem_cache_destroy(srb_cachep);
2604                 fc_release_transport(qla2xxx_transport_template);
2605         }
2606         return ret;
2607 }
2608
2609 /**
2610  * qla2x00_module_exit - Module cleanup.
2611  **/
2612 static void __exit
2613 qla2x00_module_exit(void)
2614 {
2615         pci_unregister_driver(&qla2xxx_pci_driver);
2616         kmem_cache_destroy(srb_cachep);
2617         fc_release_transport(qla2xxx_transport_template);
2618 }
2619
2620 module_init(qla2x00_module_init);
2621 module_exit(qla2x00_module_exit);
2622
2623 MODULE_AUTHOR("QLogic Corporation");
2624 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2625 MODULE_LICENSE("GPL");
2626 MODULE_VERSION(QLA2XXX_VERSION);