git.oblomov.eu Git - linux-2.6/blob - 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         ha->dpc_pid = -1;
1329
1330         /* Configure PCI I/O space */
1331         ret = qla2x00_iospace_config(ha);
1332         if (ret)
1333                 goto probe_failed;
1334
1335         qla_printk(KERN_INFO, ha,
1336             "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1337             pdev->irq, ha->iobase);
1338
1339         spin_lock_init(&ha->hardware_lock);
1340
1341         ha->prev_topology = 0;
1342         ha->ports = MAX_BUSES;
1343         ha->init_cb_size = sizeof(init_cb_t);
1344         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1345
1346         /* Assign ISP specific operations. */
1347         ha->isp_ops.pci_config          = qla2100_pci_config;
1348         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1349         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1350         ha->isp_ops.config_rings        = qla2x00_config_rings;
1351         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1352         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1353         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1354         ha->isp_ops.load_risc           = qla2x00_load_risc;
1355         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1356         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1357         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1358         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1359         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1360         ha->isp_ops.abort_command       = qla2x00_abort_command;
1361         ha->isp_ops.abort_target        = qla2x00_abort_target;
1362         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1363         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1364         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1365         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1366         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1367         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1368         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1369         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1370         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1371         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1372         if (IS_QLA2100(ha)) {
1373                 host->max_id = MAX_TARGETS_2100;
1374                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1375                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1376                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1377                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1378                 host->sg_tablesize = 32;
1379                 ha->gid_list_info_size = 4;
1380         } else if (IS_QLA2200(ha)) {
1381                 host->max_id = MAX_TARGETS_2200;
1382                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1383                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1384                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1385                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1386                 ha->gid_list_info_size = 4;
1387         } else if (IS_QLA23XX(ha)) {
1388                 host->max_id = MAX_TARGETS_2200;
1389                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1390                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1391                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1392                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1393                 ha->isp_ops.pci_config = qla2300_pci_config;
1394                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1395                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1396                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1397                 ha->gid_list_info_size = 6;
1398         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1399                 host->max_id = MAX_TARGETS_2200;
1400                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1401                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1402                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1403                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1404                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1405                 ha->mgmt_svr_loop_id = 10;
1406                 ha->isp_ops.pci_config = qla24xx_pci_config;
1407                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1408                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1409                 ha->isp_ops.config_rings = qla24xx_config_rings;
1410                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1411                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1412                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1413                 ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1414                 if (ql2xfwloadbin)
1415                         ha->isp_ops.load_risc = qla24xx_load_risc_hotplug;
1416                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1417                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1418                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1419                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1420                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1421                 ha->isp_ops.abort_command = qla24xx_abort_command;
1422                 ha->isp_ops.abort_target = qla24xx_abort_target;
1423                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1424                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1425                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1426                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1427                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1428                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1429                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1430                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1431                 ha->gid_list_info_size = 8;
1432         }
1433         host->can_queue = ha->request_q_length + 128;
1434
1435         /* load the F/W, read paramaters, and init the H/W */
1436         ha->instance = num_hosts;
1437
1438         init_MUTEX(&ha->mbx_cmd_sem);
1439         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1440
1441         INIT_LIST_HEAD(&ha->list);
1442         INIT_LIST_HEAD(&ha->fcports);
1443         INIT_LIST_HEAD(&ha->rscn_fcports);
1444
1445         /*
1446          * These locks are used to prevent more than one CPU
1447          * from modifying the queue at the same time. The
1448          * higher level "host_lock" will reduce most
1449          * contention for these locks.
1450          */
1451         spin_lock_init(&ha->mbx_reg_lock);
1452
1453         init_completion(&ha->dpc_inited);
1454         init_completion(&ha->dpc_exited);
1455
1456         qla2x00_config_dma_addressing(ha);
1457         if (qla2x00_mem_alloc(ha)) {
1458                 qla_printk(KERN_WARNING, ha,
1459                     "[ERROR] Failed to allocate memory for adapter\n");
1460
1461                 ret = -ENOMEM;
1462                 goto probe_failed;
1463         }
1464
1465         if (qla2x00_initialize_adapter(ha) &&
1466             !(ha->device_flags & DFLG_NO_CABLE)) {
1467
1468                 qla_printk(KERN_WARNING, ha,
1469                     "Failed to initialize adapter\n");
1470
1471                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1472                     "Adapter flags %x.\n",
1473                     ha->host_no, ha->device_flags));
1474
1475                 ret = -ENODEV;
1476                 goto probe_failed;
1477         }
1478
1479         /*
1480          * Startup the kernel thread for this host adapter
1481          */
1482         ha->dpc_should_die = 0;
1483         ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1484         if (ha->dpc_pid < 0) {
1485                 qla_printk(KERN_WARNING, ha,
1486                     "Unable to start DPC thread!\n");
1487
1488                 ret = -ENODEV;
1489                 goto probe_failed;
1490         }
1491         wait_for_completion(&ha->dpc_inited);
1492
1493         host->this_id = 255;
1494         host->cmd_per_lun = 3;
1495         host->unique_id = ha->instance;
1496         host->max_cmd_len = MAX_CMDSZ;
1497         host->max_channel = ha->ports - 1;
1498         host->max_lun = MAX_LUNS;
1499         host->transportt = qla2xxx_transport_template;
1500
1501         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1502             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1503         if (ret) {
1504                 qla_printk(KERN_WARNING, ha,
1505                     "Failed to reserve interrupt %d already in use.\n",
1506                     pdev->irq);
1507                 goto probe_failed;
1508         }
1509         host->irq = pdev->irq;
1510
1511         /* Initialized the timer */
1512         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1513
1514         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1515             ha->host_no, ha));
1516
1517         ha->isp_ops.disable_intrs(ha);
1518
1519         spin_lock_irqsave(&ha->hardware_lock, flags);
1520         reg = ha->iobase;
1521         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1522                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1523                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1524         } else {
1525                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1526                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1527                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1528
1529                 /* Enable proper parity */
1530                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1531                         if (IS_QLA2300(ha))
1532                                 /* SRAM parity */
1533                                 WRT_REG_WORD(&reg->isp.hccr,
1534                                     (HCCR_ENABLE_PARITY + 0x1));
1535                         else
1536                                 /* SRAM, Instruction RAM and GP RAM parity */
1537                                 WRT_REG_WORD(&reg->isp.hccr,
1538                                     (HCCR_ENABLE_PARITY + 0x7));
1539                 }
1540         }
1541         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1542
1543         ha->isp_ops.enable_intrs(ha);
1544
1545         /* v2.19.5b6 */
1546         /*
1547          * Wait around max loop_reset_delay secs for the devices to come
1548          * on-line. We don't want Linux scanning before we are ready.
1549          *
1550          */
1551         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1552             time_before(jiffies,wait_switch) &&
1553              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1554              && (ha->device_flags & SWITCH_FOUND) ;) {
1555
1556                 qla2x00_check_fabric_devices(ha);
1557
1558                 msleep(10);
1559         }
1560
1561         pci_set_drvdata(pdev, ha);
1562         ha->flags.init_done = 1;
1563         num_hosts++;
1564
1565         ret = scsi_add_host(host, &pdev->dev);
1566         if (ret)
1567                 goto probe_failed;
1568
1569         qla2x00_alloc_sysfs_attr(ha);
1570
1571         qla2x00_init_host_attr(ha);
1572
1573         qla_printk(KERN_INFO, ha, "\n"
1574             " QLogic Fibre Channel HBA Driver: %s\n"
1575             "  QLogic %s - %s\n"
1576             "  %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1577             ha->model_number, ha->model_desc ? ha->model_desc: "",
1578             ha->brd_info->isp_name, ha->isp_ops.pci_info_str(ha, pci_info),
1579             pci_name(pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1580             ha->host_no, ha->isp_ops.fw_version_str(ha, fw_str));
1581
1582         /* Go with fc_rport registration. */
1583         list_for_each_entry(fcport, &ha->fcports, list)
1584                 qla2x00_reg_remote_port(ha, fcport);
1585
1586         return 0;
1587
1588 probe_failed:
1589         qla2x00_free_device(ha);
1590
1591         scsi_host_put(host);
1592
1593 probe_disable_device:
1594         pci_disable_device(pdev);
1595
1596 probe_out:
1597         return ret;
1598 }
1599 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1600
1601 void qla2x00_remove_one(struct pci_dev *pdev)
1602 {
1603         scsi_qla_host_t *ha;
1604
1605         ha = pci_get_drvdata(pdev);
1606
1607         qla2x00_free_sysfs_attr(ha);
1608
1609         fc_remove_host(ha->host);
1610
1611         scsi_remove_host(ha->host);
1612
1613         qla2x00_free_device(ha);
1614
1615         scsi_host_put(ha->host);
1616
1617         pci_set_drvdata(pdev, NULL);
1618 }
1619 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1620
1621 static void
1622 qla2x00_free_device(scsi_qla_host_t *ha)
1623 {
1624         int ret;
1625
1626         /* Abort any outstanding IO descriptors. */
1627         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1628                 qla2x00_cancel_io_descriptors(ha);
1629
1630         /* Disable timer */
1631         if (ha->timer_active)
1632                 qla2x00_stop_timer(ha);
1633
1634         /* Kill the kernel thread for this host */
1635         if (ha->dpc_pid >= 0) {
1636                 ha->dpc_should_die = 1;
1637                 wmb();
1638                 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1639                 if (ret) {
1640                         qla_printk(KERN_ERR, ha,
1641                             "Unable to signal DPC thread -- (%d)\n", ret);
1642
1643                         /* TODO: SOMETHING MORE??? */
1644                 } else {
1645                         wait_for_completion(&ha->dpc_exited);
1646                 }
1647         }
1648
1649         /* Stop currently executing firmware. */
1650         qla2x00_stop_firmware(ha);
1651
1652         /* turn-off interrupts on the card */
1653         if (ha->interrupts_on)
1654                 ha->isp_ops.disable_intrs(ha);
1655
1656         qla2x00_mem_free(ha);
1657
1658         ha->flags.online = 0;
1659
1660         /* Detach interrupts */
1661         if (ha->pdev->irq)
1662                 free_irq(ha->pdev->irq, ha);
1663
1664         /* release io space registers  */
1665         if (ha->iobase)
1666                 iounmap(ha->iobase);
1667         pci_release_regions(ha->pdev);
1668
1669         pci_disable_device(ha->pdev);
1670 }
1671
1672 /*
1673  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1674  *
1675  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1676  *
1677  * Return: None.
1678  *
1679  * Context:
1680  */
1681 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1682     int do_login)
1683 {
1684         if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1685                 fc_remote_port_block(fcport->rport);
1686         /*
1687          * We may need to retry the login, so don't change the state of the
1688          * port but do the retries.
1689          */
1690         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1691                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1692
1693         if (!do_login)
1694                 return;
1695
1696         if (fcport->login_retry == 0) {
1697                 fcport->login_retry = ha->login_retry_count;
1698                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1699
1700                 DEBUG(printk("scsi(%ld): Port login retry: "
1701                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1702                     "id = 0x%04x retry cnt=%d\n",
1703                     ha->host_no,
1704                     fcport->port_name[0],
1705                     fcport->port_name[1],
1706                     fcport->port_name[2],
1707                     fcport->port_name[3],
1708                     fcport->port_name[4],
1709                     fcport->port_name[5],
1710                     fcport->port_name[6],
1711                     fcport->port_name[7],
1712                     fcport->loop_id,
1713                     fcport->login_retry));
1714         }
1715 }
1716
1717 /*
1718  * qla2x00_mark_all_devices_lost
1719  *      Updates fcport state when device goes offline.
1720  *
1721  * Input:
1722  *      ha = adapter block pointer.
1723  *      fcport = port structure pointer.
1724  *
1725  * Return:
1726  *      None.
1727  *
1728  * Context:
1729  */
1730 void
1731 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1732 {
1733         fc_port_t *fcport;
1734
1735         list_for_each_entry(fcport, &ha->fcports, list) {
1736                 if (fcport->port_type != FCT_TARGET)
1737                         continue;
1738
1739                 /*
1740                  * No point in marking the device as lost, if the device is
1741                  * already DEAD.
1742                  */
1743                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1744                         continue;
1745                 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1746                         fc_remote_port_block(fcport->rport);
1747                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1748         }
1749 }
1750
1751 /*
1752 * qla2x00_mem_alloc
1753 *      Allocates adapter memory.
1754 *
1755 * Returns:
1756 *      0  = success.
1757 *      1  = failure.
1758 */
1759 static uint8_t
1760 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1761 {
1762         char    name[16];
1763         uint8_t   status = 1;
1764         int     retry= 10;
1765
1766         do {
1767                 /*
1768                  * This will loop only once if everything goes well, else some
1769                  * number of retries will be performed to get around a kernel
1770                  * bug where available mem is not allocated until after a
1771                  * little delay and a retry.
1772                  */
1773                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1774                     (ha->request_q_length + 1) * sizeof(request_t),
1775                     &ha->request_dma, GFP_KERNEL);
1776                 if (ha->request_ring == NULL) {
1777                         qla_printk(KERN_WARNING, ha,
1778                             "Memory Allocation failed - request_ring\n");
1779
1780                         qla2x00_mem_free(ha);
1781                         msleep(100);
1782
1783                         continue;
1784                 }
1785
1786                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1787                     (ha->response_q_length + 1) * sizeof(response_t),
1788                     &ha->response_dma, GFP_KERNEL);
1789                 if (ha->response_ring == NULL) {
1790                         qla_printk(KERN_WARNING, ha,
1791                             "Memory Allocation failed - response_ring\n");
1792
1793                         qla2x00_mem_free(ha);
1794                         msleep(100);
1795
1796                         continue;
1797                 }
1798
1799                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1800                     &ha->gid_list_dma, GFP_KERNEL);
1801                 if (ha->gid_list == NULL) {
1802                         qla_printk(KERN_WARNING, ha,
1803                             "Memory Allocation failed - gid_list\n");
1804
1805                         qla2x00_mem_free(ha);
1806                         msleep(100);
1807
1808                         continue;
1809                 }
1810
1811                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1812                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1813                 if (ha->rlc_rsp == NULL) {
1814                         qla_printk(KERN_WARNING, ha,
1815                                 "Memory Allocation failed - rlc");
1816
1817                         qla2x00_mem_free(ha);
1818                         msleep(100);
1819
1820                         continue;
1821                 }
1822
1823                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1824                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1825                     DMA_POOL_SIZE, 8, 0);
1826                 if (ha->s_dma_pool == NULL) {
1827                         qla_printk(KERN_WARNING, ha,
1828                             "Memory Allocation failed - s_dma_pool\n");
1829
1830                         qla2x00_mem_free(ha);
1831                         msleep(100);
1832
1833                         continue;
1834                 }
1835
1836                 /* get consistent memory allocated for init control block */
1837                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1838                     &ha->init_cb_dma);
1839                 if (ha->init_cb == NULL) {
1840                         qla_printk(KERN_WARNING, ha,
1841                             "Memory Allocation failed - init_cb\n");
1842
1843                         qla2x00_mem_free(ha);
1844                         msleep(100);
1845
1846                         continue;
1847                 }
1848                 memset(ha->init_cb, 0, ha->init_cb_size);
1849
1850                 /* Get consistent memory allocated for Get Port Database cmd */
1851                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1852                     &ha->iodesc_pd_dma);
1853                 if (ha->iodesc_pd == NULL) {
1854                         /* error */
1855                         qla_printk(KERN_WARNING, ha,
1856                             "Memory Allocation failed - iodesc_pd\n");
1857
1858                         qla2x00_mem_free(ha);
1859                         msleep(100);
1860
1861                         continue;
1862                 }
1863                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1864
1865                 /* Allocate ioctl related memory. */
1866                 if (qla2x00_alloc_ioctl_mem(ha)) {
1867                         qla_printk(KERN_WARNING, ha,
1868                             "Memory Allocation failed - ioctl_mem\n");
1869
1870                         qla2x00_mem_free(ha);
1871                         msleep(100);
1872
1873                         continue;
1874                 }
1875
1876                 if (qla2x00_allocate_sp_pool(ha)) {
1877                         qla_printk(KERN_WARNING, ha,
1878                             "Memory Allocation failed - "
1879                             "qla2x00_allocate_sp_pool()\n");
1880
1881                         qla2x00_mem_free(ha);
1882                         msleep(100);
1883
1884                         continue;
1885                 }
1886
1887                 /* Allocate memory for SNS commands */
1888                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1889                         /* Get consistent memory allocated for SNS commands */
1890                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1891                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1892                             GFP_KERNEL);
1893                         if (ha->sns_cmd == NULL) {
1894                                 /* error */
1895                                 qla_printk(KERN_WARNING, ha,
1896                                     "Memory Allocation failed - sns_cmd\n");
1897
1898                                 qla2x00_mem_free(ha);
1899                                 msleep(100);
1900
1901                                 continue;
1902                         }
1903                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1904                 } else {
1905                         /* Get consistent memory allocated for MS IOCB */
1906                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1907                             &ha->ms_iocb_dma);
1908                         if (ha->ms_iocb == NULL) {
1909                                 /* error */
1910                                 qla_printk(KERN_WARNING, ha,
1911                                     "Memory Allocation failed - ms_iocb\n");
1912
1913                                 qla2x00_mem_free(ha);
1914                                 msleep(100);
1915
1916                                 continue;
1917                         }
1918                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1919
1920                         /*
1921                          * Get consistent memory allocated for CT SNS
1922                          * commands
1923                          */
1924                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1925                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1926                             GFP_KERNEL);
1927                         if (ha->ct_sns == NULL) {
1928                                 /* error */
1929                                 qla_printk(KERN_WARNING, ha,
1930                                     "Memory Allocation failed - ct_sns\n");
1931
1932                                 qla2x00_mem_free(ha);
1933                                 msleep(100);
1934
1935                                 continue;
1936                         }
1937                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1938                 }
1939
1940                 /* Done all allocations without any error. */
1941                 status = 0;
1942
1943         } while (retry-- && status != 0);
1944
1945         if (status) {
1946                 printk(KERN_WARNING
1947                         "%s(): **** FAILED ****\n", __func__);
1948         }
1949
1950         return(status);
1951 }
1952
1953 /*
1954 * qla2x00_mem_free
1955 *      Frees all adapter allocated memory.
1956 *
1957 * Input:
1958 *      ha = adapter block pointer.
1959 */
1960 static void
1961 qla2x00_mem_free(scsi_qla_host_t *ha)
1962 {
1963         struct list_head        *fcpl, *fcptemp;
1964         fc_port_t       *fcport;
1965         unsigned int    wtime;/* max wait time if mbx cmd is busy. */
1966
1967         if (ha == NULL) {
1968                 /* error */
1969                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1970                 return;
1971         }
1972
1973         /* Make sure all other threads are stopped. */
1974         wtime = 60 * 1000;
1975         while (ha->dpc_wait && wtime)
1976                 wtime = msleep_interruptible(wtime);
1977
1978         /* free ioctl memory */
1979         qla2x00_free_ioctl_mem(ha);
1980
1981         /* free sp pool */
1982         qla2x00_free_sp_pool(ha);
1983
1984         if (ha->sns_cmd)
1985                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1986                     ha->sns_cmd, ha->sns_cmd_dma);
1987
1988         if (ha->ct_sns)
1989                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1990                     ha->ct_sns, ha->ct_sns_dma);
1991
1992         if (ha->ms_iocb)
1993                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1994
1995         if (ha->iodesc_pd)
1996                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1997
1998         if (ha->init_cb)
1999                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2000
2001         if (ha->s_dma_pool)
2002                 dma_pool_destroy(ha->s_dma_pool);
2003
2004         if (ha->rlc_rsp)
2005                 dma_free_coherent(&ha->pdev->dev,
2006                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2007                     ha->rlc_rsp_dma);
2008
2009         if (ha->gid_list)
2010                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2011                     ha->gid_list_dma);
2012
2013         if (ha->response_ring)
2014                 dma_free_coherent(&ha->pdev->dev,
2015                     (ha->response_q_length + 1) * sizeof(response_t),
2016                     ha->response_ring, ha->response_dma);
2017
2018         if (ha->request_ring)
2019                 dma_free_coherent(&ha->pdev->dev,
2020                     (ha->request_q_length + 1) * sizeof(request_t),
2021                     ha->request_ring, ha->request_dma);
2022
2023         ha->sns_cmd = NULL;
2024         ha->sns_cmd_dma = 0;
2025         ha->ct_sns = NULL;
2026         ha->ct_sns_dma = 0;
2027         ha->ms_iocb = NULL;
2028         ha->ms_iocb_dma = 0;
2029         ha->iodesc_pd = NULL;
2030         ha->iodesc_pd_dma = 0;
2031         ha->init_cb = NULL;
2032         ha->init_cb_dma = 0;
2033
2034         ha->s_dma_pool = NULL;
2035
2036         ha->rlc_rsp = NULL;
2037         ha->rlc_rsp_dma = 0;
2038         ha->gid_list = NULL;
2039         ha->gid_list_dma = 0;
2040
2041         ha->response_ring = NULL;
2042         ha->response_dma = 0;
2043         ha->request_ring = NULL;
2044         ha->request_dma = 0;
2045
2046         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2047                 fcport = list_entry(fcpl, fc_port_t, list);
2048
2049                 /* fc ports */
2050                 list_del_init(&fcport->list);
2051                 kfree(fcport);
2052         }
2053         INIT_LIST_HEAD(&ha->fcports);
2054
2055         if (ha->fw_dump)
2056                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2057
2058         vfree(ha->fw_dump24);
2059
2060         vfree(ha->fw_dump_buffer);
2061
2062         ha->fw_dump = NULL;
2063         ha->fw_dump24 = NULL;
2064         ha->fw_dumped = 0;
2065         ha->fw_dump_reading = 0;
2066         ha->fw_dump_buffer = NULL;
2067 }
2068
2069 /*
2070  * qla2x00_allocate_sp_pool
2071  *       This routine is called during initialization to allocate
2072  *       memory for local srb_t.
2073  *
2074  * Input:
2075  *       ha   = adapter block pointer.
2076  *
2077  * Context:
2078  *      Kernel context.
2079  *
2080  * Note: Sets the ref_count for non Null sp to one.
2081  */
2082 static int
2083 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2084 {
2085         int      rval;
2086
2087         rval = QLA_SUCCESS;
2088         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2089             mempool_free_slab, srb_cachep);
2090         if (ha->srb_mempool == NULL) {
2091                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2092                 rval = QLA_FUNCTION_FAILED;
2093         }
2094         return (rval);
2095 }
2096
2097 /*
2098  *  This routine frees all adapter allocated memory.
2099  *
2100  */
2101 static void
2102 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2103 {
2104         if (ha->srb_mempool) {
2105                 mempool_destroy(ha->srb_mempool);
2106                 ha->srb_mempool = NULL;
2107         }
2108 }
2109
2110 /**************************************************************************
2111 * qla2x00_do_dpc
2112 *   This kernel thread is a task that is schedule by the interrupt handler
2113 *   to perform the background processing for interrupts.
2114 *
2115 * Notes:
2116 * This task always run in the context of a kernel thread.  It
2117 * is kick-off by the driver's detect code and starts up
2118 * up one per adapter. It immediately goes to sleep and waits for
2119 * some fibre event.  When either the interrupt handler or
2120 * the timer routine detects a event it will one of the task
2121 * bits then wake us up.
2122 **************************************************************************/
2123 static int
2124 qla2x00_do_dpc(void *data)
2125 {
2126         DECLARE_MUTEX_LOCKED(sem);
2127         scsi_qla_host_t *ha;
2128         fc_port_t       *fcport;
2129         uint8_t         status;
2130         uint16_t        next_loopid;
2131
2132         ha = (scsi_qla_host_t *)data;
2133
2134         lock_kernel();
2135
2136         daemonize("%s_dpc", ha->host_str);
2137         allow_signal(SIGHUP);
2138
2139         ha->dpc_wait = &sem;
2140
2141         set_user_nice(current, -20);
2142
2143         unlock_kernel();
2144
2145         complete(&ha->dpc_inited);
2146
2147         while (1) {
2148                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2149
2150                 if (down_interruptible(&sem))
2151                         break;
2152
2153                 if (ha->dpc_should_die)
2154                         break;
2155
2156                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2157
2158                 /* Initialization not yet finished. Don't do anything yet. */
2159                 if (!ha->flags.init_done || ha->dpc_active)
2160                         continue;
2161
2162                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2163
2164                 ha->dpc_active = 1;
2165
2166                 if (ha->flags.mbox_busy) {
2167                         ha->dpc_active = 0;
2168                         continue;
2169                 }
2170
2171                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2172
2173                         DEBUG(printk("scsi(%ld): dpc: sched "
2174                             "qla2x00_abort_isp ha = %p\n",
2175                             ha->host_no, ha));
2176                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2177                             &ha->dpc_flags))) {
2178
2179                                 if (qla2x00_abort_isp(ha)) {
2180                                         /* failed. retry later */
2181                                         set_bit(ISP_ABORT_NEEDED,
2182                                             &ha->dpc_flags);
2183                                 }
2184                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2185                         }
2186                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2187                             ha->host_no));
2188                 }
2189
2190                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2191                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2192
2193                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2194                             ha->host_no));
2195
2196                         qla2x00_rst_aen(ha);
2197                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2198                 }
2199
2200                 /* Retry each device up to login retry count */
2201                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2202                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2203                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2204
2205                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2206                             ha->host_no));
2207
2208                         next_loopid = 0;
2209                         list_for_each_entry(fcport, &ha->fcports, list) {
2210                                 if (fcport->port_type != FCT_TARGET)
2211                                         continue;
2212
2213                                 /*
2214                                  * If the port is not ONLINE then try to login
2215                                  * to it if we haven't run out of retries.
2216                                  */
2217                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2218                                     fcport->login_retry) {
2219
2220                                         fcport->login_retry--;
2221                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2222                                                 if (fcport->flags &
2223                                                     FCF_TAPE_PRESENT)
2224                                                         ha->isp_ops.fabric_logout(
2225                                                             ha, fcport->loop_id,
2226                                                             fcport->d_id.b.domain,
2227                                                             fcport->d_id.b.area,
2228                                                             fcport->d_id.b.al_pa);
2229                                                 status = qla2x00_fabric_login(
2230                                                     ha, fcport, &next_loopid);
2231                                         } else
2232                                                 status =
2233                                                     qla2x00_local_device_login(
2234                                                         ha, fcport->loop_id);
2235
2236                                         if (status == QLA_SUCCESS) {
2237                                                 fcport->old_loop_id = fcport->loop_id;
2238
2239                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2240                                                     ha->host_no, fcport->loop_id));
2241
2242                                                 fcport->port_login_retry_count =
2243                                                     ha->port_down_retry_count * PORT_RETRY_TIME;
2244                                                 atomic_set(&fcport->state, FCS_ONLINE);
2245                                                 atomic_set(&fcport->port_down_timer,
2246                                                     ha->port_down_retry_count * PORT_RETRY_TIME);
2247
2248                                                 fcport->login_retry = 0;
2249                                         } else if (status == 1) {
2250                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2251                                                 /* retry the login again */
2252                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2253                                                     ha->host_no,
2254                                                     fcport->login_retry, fcport->loop_id));
2255                                         } else {
2256                                                 fcport->login_retry = 0;
2257                                         }
2258                                 }
2259                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2260                                         break;
2261                         }
2262                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2263                             ha->host_no));
2264                 }
2265
2266                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2267                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2268
2269                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2270                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2271                             ha->host_no));
2272
2273                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2274
2275                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2276                             ha->host_no));
2277                 }
2278
2279                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2280
2281                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2282                             ha->host_no));
2283
2284                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2285                             &ha->dpc_flags))) {
2286
2287                                 qla2x00_loop_resync(ha);
2288
2289                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2290                         }
2291
2292                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2293                             ha->host_no));
2294                 }
2295
2296                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2297
2298                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2299                             ha->host_no));
2300
2301                         qla2x00_rescan_fcports(ha);
2302
2303                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2304                             "end.\n",
2305                             ha->host_no));
2306                 }
2307
2308                 if (!ha->interrupts_on)
2309                         ha->isp_ops.enable_intrs(ha);
2310
2311                 ha->dpc_active = 0;
2312         } /* End of while(1) */
2313
2314         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2315
2316         /*
2317          * Make sure that nobody tries to wake us up again.
2318          */
2319         ha->dpc_wait = NULL;
2320         ha->dpc_active = 0;
2321
2322         complete_and_exit(&ha->dpc_exited, 0);
2323 }
2324
2325 /*
2326 *  qla2x00_rst_aen
2327 *      Processes asynchronous reset.
2328 *
2329 * Input:
2330 *      ha  = adapter block pointer.
2331 */
2332 static void
2333 qla2x00_rst_aen(scsi_qla_host_t *ha)
2334 {
2335         if (ha->flags.online && !ha->flags.reset_active &&
2336             !atomic_read(&ha->loop_down_timer) &&
2337             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2338                 do {
2339                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2340
2341                         /*
2342                          * Issue marker command only when we are going to start
2343                          * the I/O.
2344                          */
2345                         ha->marker_needed = 1;
2346                 } while (!atomic_read(&ha->loop_down_timer) &&
2347                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2348         }
2349 }
2350
2351 static void
2352 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2353 {
2354         struct scsi_cmnd *cmd = sp->cmd;
2355
2356         if (sp->flags & SRB_DMA_VALID) {
2357                 if (cmd->use_sg) {
2358                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2359                             cmd->use_sg, cmd->sc_data_direction);
2360                 } else if (cmd->request_bufflen) {
2361                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2362                             cmd->request_bufflen, cmd->sc_data_direction);
2363                 }
2364                 sp->flags &= ~SRB_DMA_VALID;
2365         }
2366         CMD_SP(cmd) = NULL;
2367 }
2368
2369 void
2370 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2371 {
2372         struct scsi_cmnd *cmd = sp->cmd;
2373
2374         qla2x00_sp_free_dma(ha, sp);
2375
2376         mempool_free(sp, ha->srb_mempool);
2377
2378         cmd->scsi_done(cmd);
2379 }
2380
2381 /**************************************************************************
2382 *   qla2x00_timer
2383 *
2384 * Description:
2385 *   One second timer
2386 *
2387 * Context: Interrupt
2388 ***************************************************************************/
2389 static void
2390 qla2x00_timer(scsi_qla_host_t *ha)
2391 {
2392         unsigned long   cpu_flags = 0;
2393         fc_port_t       *fcport;
2394         int             start_dpc = 0;
2395         int             index;
2396         srb_t           *sp;
2397         int             t;
2398
2399         /*
2400          * Ports - Port down timer.
2401          *
2402          * Whenever, a port is in the LOST state we start decrementing its port
2403          * down timer every second until it reaches zero. Once  it reaches zero
2404          * the port it marked DEAD.
2405          */
2406         t = 0;
2407         list_for_each_entry(fcport, &ha->fcports, list) {
2408                 if (fcport->port_type != FCT_TARGET)
2409                         continue;
2410
2411                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2412
2413                         if (atomic_read(&fcport->port_down_timer) == 0)
2414                                 continue;
2415
2416                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2417                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2418
2419                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2420                             "%d remaining\n",
2421                             ha->host_no,
2422                             t, atomic_read(&fcport->port_down_timer)));
2423                 }
2424                 t++;
2425         } /* End of for fcport  */
2426
2427
2428         /* Loop down handler. */
2429         if (atomic_read(&ha->loop_down_timer) > 0 &&
2430             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2431
2432                 if (atomic_read(&ha->loop_down_timer) ==
2433                     ha->loop_down_abort_time) {
2434
2435                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2436                             "queues before time expire\n",
2437                             ha->host_no));
2438
2439                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2440                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2441
2442                         /* Schedule an ISP abort to return any tape commands. */
2443                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2444                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2445                             index++) {
2446                                 fc_port_t *sfcp;
2447
2448                                 sp = ha->outstanding_cmds[index];
2449                                 if (!sp)
2450                                         continue;
2451                                 sfcp = sp->fcport;
2452                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2453                                         continue;
2454
2455                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2456                                 break;
2457                         }
2458                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2459
2460                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2461                         start_dpc++;
2462                 }
2463
2464                 /* if the loop has been down for 4 minutes, reinit adapter */
2465                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2466                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2467                             "restarting queues.\n",
2468                             ha->host_no));
2469
2470                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2471                         start_dpc++;
2472
2473                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2474                                 DEBUG(printk("scsi(%ld): Loop down - "
2475                                     "aborting ISP.\n",
2476                                     ha->host_no));
2477                                 qla_printk(KERN_WARNING, ha,
2478                                     "Loop down - aborting ISP.\n");
2479
2480                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2481                         }
2482                 }
2483                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2484                     ha->host_no,
2485                     atomic_read(&ha->loop_down_timer)));
2486         }
2487
2488         /* Schedule the DPC routine if needed */
2489         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2490             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2491             start_dpc ||
2492             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2493             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2494             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2495             ha->dpc_wait && !ha->dpc_active) {
2496
2497                 up(ha->dpc_wait);
2498         }
2499
2500         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2501 }
2502
2503 /* XXX(hch): crude hack to emulate a down_timeout() */
2504 int
2505 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2506 {
2507         const unsigned int step = 100; /* msecs */
2508         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2509
2510         do {
2511                 if (!down_trylock(sema))
2512                         return 0;
2513                 if (msleep_interruptible(step))
2514                         break;
2515         } while (--iterations >= 0);
2516
2517         return -ETIMEDOUT;
2518 }
2519
2520 static struct qla_board_info qla_board_tbl[] = {
2521         {
2522                 .drv_name       = "qla2400",
2523                 .isp_name       = "ISP2422",
2524                 .fw_fname       = "ql2400_fw.bin",
2525                 .sht            = &qla24xx_driver_template,
2526         },
2527         {
2528                 .drv_name       = "qla2400",
2529                 .isp_name       = "ISP2432",
2530                 .fw_fname       = "ql2400_fw.bin",
2531                 .sht            = &qla24xx_driver_template,
2532         },
2533 };
2534
2535 static struct pci_device_id qla2xxx_pci_tbl[] = {
2536         {
2537                 .vendor         = PCI_VENDOR_ID_QLOGIC,
2538                 .device         = PCI_DEVICE_ID_QLOGIC_ISP2422,
2539                 .subvendor      = PCI_ANY_ID,
2540                 .subdevice      = PCI_ANY_ID,
2541                 .driver_data    = (unsigned long)&qla_board_tbl[0],
2542         },
2543         {
2544                 .vendor         = PCI_VENDOR_ID_QLOGIC,
2545                 .device         = PCI_DEVICE_ID_QLOGIC_ISP2432,
2546                 .subvendor      = PCI_ANY_ID,
2547                 .subdevice      = PCI_ANY_ID,
2548                 .driver_data    = (unsigned long)&qla_board_tbl[1],
2549         },
2550         {0, 0},
2551 };
2552 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2553
2554 static int __devinit
2555 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2556 {
2557         return qla2x00_probe_one(pdev,
2558             (struct qla_board_info *)id->driver_data);
2559 }
2560
2561 static void __devexit
2562 qla2xxx_remove_one(struct pci_dev *pdev)
2563 {
2564         qla2x00_remove_one(pdev);
2565 }
2566
2567 static struct pci_driver qla2xxx_pci_driver = {
2568         .name           = "qla2xxx",
2569         .id_table       = qla2xxx_pci_tbl,
2570         .probe          = qla2xxx_probe_one,
2571         .remove         = __devexit_p(qla2xxx_remove_one),
2572 };
2573
2574 /**
2575  * qla2x00_module_init - Module initialization.
2576  **/
2577 static int __init
2578 qla2x00_module_init(void)
2579 {
2580         int ret = 0;
2581
2582         /* Allocate cache for SRBs. */
2583         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2584             SLAB_HWCACHE_ALIGN, NULL, NULL);
2585         if (srb_cachep == NULL) {
2586                 printk(KERN_ERR
2587                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2588                 return -ENOMEM;
2589         }
2590
2591         /* Derive version string. */
2592         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2593 #if DEBUG_QLA2100
2594         strcat(qla2x00_version_str, "-debug");
2595 #endif
2596         qla2xxx_transport_template =
2597             fc_attach_transport(&qla2xxx_transport_functions);
2598         if (!qla2xxx_transport_template)
2599                 return -ENODEV;
2600
2601         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2602         ret = pci_module_init(&qla2xxx_pci_driver);
2603         if (ret) {
2604                 kmem_cache_destroy(srb_cachep);
2605                 fc_release_transport(qla2xxx_transport_template);
2606         }
2607         return ret;
2608 }
2609
2610 /**
2611  * qla2x00_module_exit - Module cleanup.
2612  **/
2613 static void __exit
2614 qla2x00_module_exit(void)
2615 {
2616         pci_unregister_driver(&qla2xxx_pci_driver);
2617         kmem_cache_destroy(srb_cachep);
2618         fc_release_transport(qla2xxx_transport_template);
2619 }
2620
2621 module_init(qla2x00_module_init);
2622 module_exit(qla2x00_module_exit);
2623
2624 MODULE_AUTHOR("QLogic Corporation");
2625 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2626 MODULE_LICENSE("GPL");
2627 MODULE_VERSION(QLA2XXX_VERSION);