drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns "
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches. "
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 int ql2xallocfwdump = 1;
  58 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  59 MODULE_PARM_DESC(ql2xallocfwdump,
  60                 "Option to enable allocation of memory for a firmware dump "
  61                 "during HBA initialization.  Memory allocation requirements "
  62                 "vary by ISP type.  Default is 1 - allocate memory.");
  63
  64 int ql2xextended_error_logging;
  65 module_param(ql2xextended_error_logging, int, S_IRUGO|S_IRUSR);
  66 MODULE_PARM_DESC(ql2xextended_error_logging,
  67                 "Option to enable extended error logging, "
  68                 "Default is 0 - no logging. 1 - log errors.");
  69
  70 static void qla2x00_free_device(scsi_qla_host_t *);
  71
  72 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  73
  74 int ql2xfdmienable;
  75 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xfdmienable,
  77                 "Enables FDMI registratons "
  78                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  79
  80 #define MAX_Q_DEPTH    32
  81 static int ql2xmaxqdepth = MAX_Q_DEPTH;
  82 module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  83 MODULE_PARM_DESC(ql2xmaxqdepth,
  84                 "Maximum queue depth to report for target devices.");
  85
  86 int ql2xqfullrampup = 120;
  87 module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  88 MODULE_PARM_DESC(ql2xqfullrampup,
  89                 "Number of seconds to wait to begin to ramp-up the queue "
  90                 "depth for a device after a queue-full condition has been "
  91                 "detected.  Default is 120 seconds.");
  92
  93 /*
  94  * SCSI host template entry points
  95  */
  96 static int qla2xxx_slave_configure(struct scsi_device * device);
  97 static int qla2xxx_slave_alloc(struct scsi_device *);
  98 static void qla2xxx_slave_destroy(struct scsi_device *);
  99 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 100                 void (*fn)(struct scsi_cmnd *));
 101 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 102                 void (*fn)(struct scsi_cmnd *));
 103 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 104 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 105 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 106 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 107 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
 108 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 109
 110 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 111 static int qla2x00_change_queue_type(struct scsi_device *, int);
 112
 113 static struct scsi_host_template qla2x00_driver_template = {
 114         .module                 = THIS_MODULE,
 115         .name                   = QLA2XXX_DRIVER_NAME,
 116         .queuecommand           = qla2x00_queuecommand,
 117
 118         .eh_abort_handler       = qla2xxx_eh_abort,
 119         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 120         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 121         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 122
 123         .slave_configure        = qla2xxx_slave_configure,
 124
 125         .slave_alloc            = qla2xxx_slave_alloc,
 126         .slave_destroy          = qla2xxx_slave_destroy,
 127         .change_queue_depth     = qla2x00_change_queue_depth,
 128         .change_queue_type      = qla2x00_change_queue_type,
 129         .this_id                = -1,
 130         .cmd_per_lun            = 3,
 131         .use_clustering         = ENABLE_CLUSTERING,
 132         .sg_tablesize           = SG_ALL,
 133
 134         /*
 135          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 136          * which equates to 0x800000 sectors.
 137          */
 138         .max_sectors            = 0xFFFF,
 139         .shost_attrs            = qla2x00_host_attrs,
 140 };
 141
 142 static struct scsi_host_template qla24xx_driver_template = {
 143         .module                 = THIS_MODULE,
 144         .name                   = QLA2XXX_DRIVER_NAME,
 145         .queuecommand           = qla24xx_queuecommand,
 146
 147         .eh_abort_handler       = qla2xxx_eh_abort,
 148         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 149         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 150         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 151
 152         .slave_configure        = qla2xxx_slave_configure,
 153
 154         .slave_alloc            = qla2xxx_slave_alloc,
 155         .slave_destroy          = qla2xxx_slave_destroy,
 156         .change_queue_depth     = qla2x00_change_queue_depth,
 157         .change_queue_type      = qla2x00_change_queue_type,
 158         .this_id                = -1,
 159         .cmd_per_lun            = 3,
 160         .use_clustering         = ENABLE_CLUSTERING,
 161         .sg_tablesize           = SG_ALL,
 162
 163         .max_sectors            = 0xFFFF,
 164         .shost_attrs            = qla2x00_host_attrs,
 165 };
 166
 167 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 168
 169 /* TODO Convert to inlines
 170  *
 171  * Timer routines
 172  */
 173 #define WATCH_INTERVAL          1       /* number of seconds */
 174
 175 static void qla2x00_timer(scsi_qla_host_t *);
 176
 177 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 178     void *, unsigned long);
 179 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 180 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 181
 182 static inline void
 183 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 184 {
 185         init_timer(&ha->timer);
 186         ha->timer.expires = jiffies + interval * HZ;
 187         ha->timer.data = (unsigned long)ha;
 188         ha->timer.function = (void (*)(unsigned long))func;
 189         add_timer(&ha->timer);
 190         ha->timer_active = 1;
 191 }
 192
 193 static inline void
 194 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 195 {
 196         mod_timer(&ha->timer, jiffies + interval * HZ);
 197 }
 198
 199 static __inline__ void
 200 qla2x00_stop_timer(scsi_qla_host_t *ha)
 201 {
 202         del_timer_sync(&ha->timer);
 203         ha->timer_active = 0;
 204 }
 205
 206 static int qla2x00_do_dpc(void *data);
 207
 208 static void qla2x00_rst_aen(scsi_qla_host_t *);
 209
 210 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 211 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 212 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 213 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 214 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 215 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 216
 217 /* -------------------------------------------------------------------------- */
 218
 219 static char *
 220 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 221 {
 222         static char *pci_bus_modes[] = {
 223                 "33", "66", "100", "133",
 224         };
 225         uint16_t pci_bus;
 226
 227         strcpy(str, "PCI");
 228         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 229         if (pci_bus) {
 230                 strcat(str, "-X (");
 231                 strcat(str, pci_bus_modes[pci_bus]);
 232         } else {
 233                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 234                 strcat(str, " (");
 235                 strcat(str, pci_bus_modes[pci_bus]);
 236         }
 237         strcat(str, " MHz)");
 238
 239         return (str);
 240 }
 241
 242 static char *
 243 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 244 {
 245         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 246         uint32_t pci_bus;
 247         int pcie_reg;
 248
 249         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 250         if (pcie_reg) {
 251                 char lwstr[6];
 252                 uint16_t pcie_lstat, lspeed, lwidth;
 253
 254                 pcie_reg += 0x12;
 255                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 256                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 257                 lwidth = (pcie_lstat &
 258                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 259
 260                 strcpy(str, "PCIe (");
 261                 if (lspeed == 1)
 262                         strcat(str, "2.5Gb/s ");
 263                 else
 264                         strcat(str, "<unknown> ");
 265                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 266                 strcat(str, lwstr);
 267
 268                 return str;
 269         }
 270
 271         strcpy(str, "PCI");
 272         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 273         if (pci_bus == 0 || pci_bus == 8) {
 274                 strcat(str, " (");
 275                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 276         } else {
 277                 strcat(str, "-X ");
 278                 if (pci_bus & BIT_2)
 279                         strcat(str, "Mode 2");
 280                 else
 281                         strcat(str, "Mode 1");
 282                 strcat(str, " (");
 283                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 284         }
 285         strcat(str, " MHz)");
 286
 287         return str;
 288 }
 289
 290 char *
 291 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 292 {
 293         char un_str[10];
 294
 295         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 296             ha->fw_minor_version,
 297             ha->fw_subminor_version);
 298
 299         if (ha->fw_attributes & BIT_9) {
 300                 strcat(str, "FLX");
 301                 return (str);
 302         }
 303
 304         switch (ha->fw_attributes & 0xFF) {
 305         case 0x7:
 306                 strcat(str, "EF");
 307                 break;
 308         case 0x17:
 309                 strcat(str, "TP");
 310                 break;
 311         case 0x37:
 312                 strcat(str, "IP");
 313                 break;
 314         case 0x77:
 315                 strcat(str, "VI");
 316                 break;
 317         default:
 318                 sprintf(un_str, "(%x)", ha->fw_attributes);
 319                 strcat(str, un_str);
 320                 break;
 321         }
 322         if (ha->fw_attributes & 0x100)
 323                 strcat(str, "X");
 324
 325         return (str);
 326 }
 327
 328 char *
 329 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 330 {
 331         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 332             ha->fw_minor_version,
 333             ha->fw_subminor_version);
 334
 335         if (ha->fw_attributes & BIT_0)
 336                 strcat(str, "[Class 2] ");
 337         if (ha->fw_attributes & BIT_1)
 338                 strcat(str, "[IP] ");
 339         if (ha->fw_attributes & BIT_2)
 340                 strcat(str, "[Multi-ID] ");
 341         if (ha->fw_attributes & BIT_13)
 342                 strcat(str, "[Experimental]");
 343         return str;
 344 }
 345
 346 static inline srb_t *
 347 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 348     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 349 {
 350         srb_t *sp;
 351
 352         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 353         if (!sp)
 354                 return sp;
 355
 356         sp->ha = ha;
 357         sp->fcport = fcport;
 358         sp->cmd = cmd;
 359         sp->flags = 0;
 360         CMD_SP(cmd) = (void *)sp;
 361         cmd->scsi_done = done;
 362
 363         return sp;
 364 }
 365
 366 static int
 367 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 368 {
 369         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 370         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 371         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 372         srb_t *sp;
 373         int rval;
 374
 375         rval = fc_remote_port_chkready(rport);
 376         if (rval) {
 377                 cmd->result = rval;
 378                 goto qc_fail_command;
 379         }
 380
 381         /* Close window on fcport/rport state-transitioning. */
 382         if (!*(fc_port_t **)rport->dd_data) {
 383                 cmd->result = DID_IMM_RETRY << 16;
 384                 goto qc_fail_command;
 385         }
 386
 387         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 388                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 389                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 390                         cmd->result = DID_NO_CONNECT << 16;
 391                         goto qc_fail_command;
 392                 }
 393                 goto qc_host_busy;
 394         }
 395
 396         spin_unlock_irq(ha->host->host_lock);
 397
 398         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 399         if (!sp)
 400                 goto qc_host_busy_lock;
 401
 402         rval = qla2x00_start_scsi(sp);
 403         if (rval != QLA_SUCCESS)
 404                 goto qc_host_busy_free_sp;
 405
 406         spin_lock_irq(ha->host->host_lock);
 407
 408         return 0;
 409
 410 qc_host_busy_free_sp:
 411         qla2x00_sp_free_dma(ha, sp);
 412         mempool_free(sp, ha->srb_mempool);
 413
 414 qc_host_busy_lock:
 415         spin_lock_irq(ha->host->host_lock);
 416
 417 qc_host_busy:
 418         return SCSI_MLQUEUE_HOST_BUSY;
 419
 420 qc_fail_command:
 421         done(cmd);
 422
 423         return 0;
 424 }
 425
 426
 427 static int
 428 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 429 {
 430         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 431         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 432         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 433         srb_t *sp;
 434         int rval;
 435
 436         rval = fc_remote_port_chkready(rport);
 437         if (rval) {
 438                 cmd->result = rval;
 439                 goto qc24_fail_command;
 440         }
 441
 442         /* Close window on fcport/rport state-transitioning. */
 443         if (!*(fc_port_t **)rport->dd_data) {
 444                 cmd->result = DID_IMM_RETRY << 16;
 445                 goto qc24_fail_command;
 446         }
 447
 448         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 449                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 450                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 451                         cmd->result = DID_NO_CONNECT << 16;
 452                         goto qc24_fail_command;
 453                 }
 454                 goto qc24_host_busy;
 455         }
 456
 457         spin_unlock_irq(ha->host->host_lock);
 458
 459         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 460         if (!sp)
 461                 goto qc24_host_busy_lock;
 462
 463         rval = qla24xx_start_scsi(sp);
 464         if (rval != QLA_SUCCESS)
 465                 goto qc24_host_busy_free_sp;
 466
 467         spin_lock_irq(ha->host->host_lock);
 468
 469         return 0;
 470
 471 qc24_host_busy_free_sp:
 472         qla2x00_sp_free_dma(ha, sp);
 473         mempool_free(sp, ha->srb_mempool);
 474
 475 qc24_host_busy_lock:
 476         spin_lock_irq(ha->host->host_lock);
 477
 478 qc24_host_busy:
 479         return SCSI_MLQUEUE_HOST_BUSY;
 480
 481 qc24_fail_command:
 482         done(cmd);
 483
 484         return 0;
 485 }
 486
 487
 488 /*
 489  * qla2x00_eh_wait_on_command
 490  *    Waits for the command to be returned by the Firmware for some
 491  *    max time.
 492  *
 493  * Input:
 494  *    ha = actual ha whose done queue will contain the command
 495  *            returned by firmware.
 496  *    cmd = Scsi Command to wait on.
 497  *    flag = Abort/Reset(Bus or Device Reset)
 498  *
 499  * Return:
 500  *    Not Found : 0
 501  *    Found : 1
 502  */
 503 static int
 504 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 505 {
 506 #define ABORT_POLLING_PERIOD    1000
 507 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 508         unsigned long wait_iter = ABORT_WAIT_ITER;
 509         int ret = QLA_SUCCESS;
 510
 511         while (CMD_SP(cmd)) {
 512                 msleep(ABORT_POLLING_PERIOD);
 513
 514                 if (--wait_iter)
 515                         break;
 516         }
 517         if (CMD_SP(cmd))
 518                 ret = QLA_FUNCTION_FAILED;
 519
 520         return ret;
 521 }
 522
 523 /*
 524  * qla2x00_wait_for_hba_online
 525  *    Wait till the HBA is online after going through
 526  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 527  *    finally HBA is disabled ie marked offline
 528  *
 529  * Input:
 530  *     ha - pointer to host adapter structure
 531  *
 532  * Note:
 533  *    Does context switching-Release SPIN_LOCK
 534  *    (if any) before calling this routine.
 535  *
 536  * Return:
 537  *    Success (Adapter is online) : 0
 538  *    Failed  (Adapter is offline/disabled) : 1
 539  */
 540 int
 541 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 542 {
 543         int             return_status;
 544         unsigned long   wait_online;
 545
 546         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 547         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 548             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 549             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 550             ha->dpc_active) && time_before(jiffies, wait_online)) {
 551
 552                 msleep(1000);
 553         }
 554         if (ha->flags.online)
 555                 return_status = QLA_SUCCESS;
 556         else
 557                 return_status = QLA_FUNCTION_FAILED;
 558
 559         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 560
 561         return (return_status);
 562 }
 563
 564 /*
 565  * qla2x00_wait_for_loop_ready
 566  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 567  *    to be in LOOP_READY state.
 568  * Input:
 569  *     ha - pointer to host adapter structure
 570  *
 571  * Note:
 572  *    Does context switching-Release SPIN_LOCK
 573  *    (if any) before calling this routine.
 574  *
 575  *
 576  * Return:
 577  *    Success (LOOP_READY) : 0
 578  *    Failed  (LOOP_NOT_READY) : 1
 579  */
 580 static inline int
 581 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 582 {
 583         int      return_status = QLA_SUCCESS;
 584         unsigned long loop_timeout ;
 585
 586         /* wait for 5 min at the max for loop to be ready */
 587         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 588
 589         while ((!atomic_read(&ha->loop_down_timer) &&
 590             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 591             atomic_read(&ha->loop_state) != LOOP_READY) {
 592                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 593                         return_status = QLA_FUNCTION_FAILED;
 594                         break;
 595                 }
 596                 msleep(1000);
 597                 if (time_after_eq(jiffies, loop_timeout)) {
 598                         return_status = QLA_FUNCTION_FAILED;
 599                         break;
 600                 }
 601         }
 602         return (return_status);
 603 }
 604
 605 static void
 606 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 607 {
 608         struct Scsi_Host *shost = cmnd->device->host;
 609         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 610         unsigned long flags;
 611
 612         spin_lock_irqsave(shost->host_lock, flags);
 613         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 614                 spin_unlock_irqrestore(shost->host_lock, flags);
 615                 msleep(1000);
 616                 spin_lock_irqsave(shost->host_lock, flags);
 617         }
 618         spin_unlock_irqrestore(shost->host_lock, flags);
 619         return;
 620 }
 621
 622 /**************************************************************************
 623 * qla2xxx_eh_abort
 624 *
 625 * Description:
 626 *    The abort function will abort the specified command.
 627 *
 628 * Input:
 629 *    cmd = Linux SCSI command packet to be aborted.
 630 *
 631 * Returns:
 632 *    Either SUCCESS or FAILED.
 633 *
 634 * Note:
 635 *    Only return FAILED if command not returned by firmware.
 636 **************************************************************************/
 637 int
 638 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 639 {
 640         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 641         srb_t *sp;
 642         int ret, i;
 643         unsigned int id, lun;
 644         unsigned long serial;
 645         unsigned long flags;
 646         int wait = 0;
 647
 648         qla2x00_block_error_handler(cmd);
 649
 650         if (!CMD_SP(cmd))
 651                 return SUCCESS;
 652
 653         ret = SUCCESS;
 654
 655         id = cmd->device->id;
 656         lun = cmd->device->lun;
 657         serial = cmd->serial_number;
 658
 659         /* Check active list for command command. */
 660         spin_lock_irqsave(&ha->hardware_lock, flags);
 661         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 662                 sp = ha->outstanding_cmds[i];
 663
 664                 if (sp == NULL)
 665                         continue;
 666
 667                 if (sp->cmd != cmd)
 668                         continue;
 669
 670                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 671                     __func__, ha->host_no, sp, serial));
 672                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 673
 674                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 675                 if (ha->isp_ops.abort_command(ha, sp)) {
 676                         DEBUG2(printk("%s(%ld): abort_command "
 677                             "mbx failed.\n", __func__, ha->host_no));
 678                 } else {
 679                         DEBUG3(printk("%s(%ld): abort_command "
 680                             "mbx success.\n", __func__, ha->host_no));
 681                         wait = 1;
 682                 }
 683                 spin_lock_irqsave(&ha->hardware_lock, flags);
 684
 685                 break;
 686         }
 687         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 688
 689         /* Wait for the command to be returned. */
 690         if (wait) {
 691                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 692                         qla_printk(KERN_ERR, ha,
 693                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 694                             "%x.\n", ha->host_no, id, lun, serial, ret);
 695                         ret = FAILED;
 696                 }
 697         }
 698
 699         qla_printk(KERN_INFO, ha,
 700             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 701             ha->host_no, id, lun, wait, serial, ret);
 702
 703         return ret;
 704 }
 705
 706 /**************************************************************************
 707 * qla2x00_eh_wait_for_pending_target_commands
 708 *
 709 * Description:
 710 *    Waits for all the commands to come back from the specified target.
 711 *
 712 * Input:
 713 *    ha - pointer to scsi_qla_host structure.
 714 *    t  - target
 715 * Returns:
 716 *    Either SUCCESS or FAILED.
 717 *
 718 * Note:
 719 **************************************************************************/
 720 static int
 721 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 722 {
 723         int     cnt;
 724         int     status;
 725         srb_t           *sp;
 726         struct scsi_cmnd *cmd;
 727         unsigned long flags;
 728
 729         status = 0;
 730
 731         /*
 732          * Waiting for all commands for the designated target in the active
 733          * array
 734          */
 735         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 736                 spin_lock_irqsave(&ha->hardware_lock, flags);
 737                 sp = ha->outstanding_cmds[cnt];
 738                 if (sp) {
 739                         cmd = sp->cmd;
 740                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 741                         if (cmd->device->id == t) {
 742                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 743                                         status = 1;
 744                                         break;
 745                                 }
 746                         }
 747                 } else {
 748                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 749                 }
 750         }
 751         return (status);
 752 }
 753
 754
 755 /**************************************************************************
 756 * qla2xxx_eh_device_reset
 757 *
 758 * Description:
 759 *    The device reset function will reset the target and abort any
 760 *    executing commands.
 761 *
 762 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 763 *          attempt to use this value, even if you determine it is
 764 *          non-null.
 765 *
 766 * Input:
 767 *    cmd = Linux SCSI command packet of the command that cause the
 768 *          bus device reset.
 769 *
 770 * Returns:
 771 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 772 *
 773 **************************************************************************/
 774 int
 775 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 776 {
 777         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 778         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 779         int ret;
 780         unsigned int id, lun;
 781         unsigned long serial;
 782
 783         qla2x00_block_error_handler(cmd);
 784
 785         ret = FAILED;
 786
 787         id = cmd->device->id;
 788         lun = cmd->device->lun;
 789         serial = cmd->serial_number;
 790
 791         if (!fcport)
 792                 return ret;
 793
 794         qla_printk(KERN_INFO, ha,
 795             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 796
 797         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 798                 goto eh_dev_reset_done;
 799
 800         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 801                 if (qla2x00_device_reset(ha, fcport) == 0)
 802                         ret = SUCCESS;
 803
 804 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 805                 if (ret == SUCCESS) {
 806                         if (fcport->flags & FC_FABRIC_DEVICE) {
 807                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 808                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 809                         }
 810                 }
 811 #endif
 812         } else {
 813                 DEBUG2(printk(KERN_INFO
 814                     "%s failed: loop not ready\n",__func__));
 815         }
 816
 817         if (ret == FAILED) {
 818                 DEBUG3(printk("%s(%ld): device reset failed\n",
 819                     __func__, ha->host_no));
 820                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 821                     __func__);
 822
 823                 goto eh_dev_reset_done;
 824         }
 825
 826         /* Flush outstanding commands. */
 827         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 828                 ret = FAILED;
 829         if (ret == FAILED) {
 830                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 831                     __func__, ha->host_no));
 832                 qla_printk(KERN_INFO, ha,
 833                     "%s: failed while waiting for commands\n", __func__);
 834         } else
 835                 qla_printk(KERN_INFO, ha,
 836                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 837                     id, lun);
 838  eh_dev_reset_done:
 839         return ret;
 840 }
 841
 842 /**************************************************************************
 843 * qla2x00_eh_wait_for_pending_commands
 844 *
 845 * Description:
 846 *    Waits for all the commands to come back from the specified host.
 847 *
 848 * Input:
 849 *    ha - pointer to scsi_qla_host structure.
 850 *
 851 * Returns:
 852 *    1 : SUCCESS
 853 *    0 : FAILED
 854 *
 855 * Note:
 856 **************************************************************************/
 857 static int
 858 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 859 {
 860         int     cnt;
 861         int     status;
 862         srb_t           *sp;
 863         struct scsi_cmnd *cmd;
 864         unsigned long flags;
 865
 866         status = 1;
 867
 868         /*
 869          * Waiting for all commands for the designated target in the active
 870          * array
 871          */
 872         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 873                 spin_lock_irqsave(&ha->hardware_lock, flags);
 874                 sp = ha->outstanding_cmds[cnt];
 875                 if (sp) {
 876                         cmd = sp->cmd;
 877                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 878                         status = qla2x00_eh_wait_on_command(ha, cmd);
 879                         if (status == 0)
 880                                 break;
 881                 }
 882                 else {
 883                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 884                 }
 885         }
 886         return (status);
 887 }
 888
 889
 890 /**************************************************************************
 891 * qla2xxx_eh_bus_reset
 892 *
 893 * Description:
 894 *    The bus reset function will reset the bus and abort any executing
 895 *    commands.
 896 *
 897 * Input:
 898 *    cmd = Linux SCSI command packet of the command that cause the
 899 *          bus reset.
 900 *
 901 * Returns:
 902 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 903 *
 904 **************************************************************************/
 905 int
 906 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 907 {
 908         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 909         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 910         int ret;
 911         unsigned int id, lun;
 912         unsigned long serial;
 913
 914         qla2x00_block_error_handler(cmd);
 915
 916         ret = FAILED;
 917
 918         id = cmd->device->id;
 919         lun = cmd->device->lun;
 920         serial = cmd->serial_number;
 921
 922         if (!fcport)
 923                 return ret;
 924
 925         qla_printk(KERN_INFO, ha,
 926             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 927
 928         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 929                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 930                 goto eh_bus_reset_done;
 931         }
 932
 933         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 934                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 935                         ret = SUCCESS;
 936         }
 937         if (ret == FAILED)
 938                 goto eh_bus_reset_done;
 939
 940         /* Flush outstanding commands. */
 941         if (!qla2x00_eh_wait_for_pending_commands(ha))
 942                 ret = FAILED;
 943
 944 eh_bus_reset_done:
 945         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 946             (ret == FAILED) ? "failed" : "succeded");
 947
 948         return ret;
 949 }
 950
 951 /**************************************************************************
 952 * qla2xxx_eh_host_reset
 953 *
 954 * Description:
 955 *    The reset function will reset the Adapter.
 956 *
 957 * Input:
 958 *      cmd = Linux SCSI command packet of the command that cause the
 959 *            adapter reset.
 960 *
 961 * Returns:
 962 *      Either SUCCESS or FAILED.
 963 *
 964 * Note:
 965 **************************************************************************/
 966 int
 967 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 968 {
 969         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 970         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 971         int ret;
 972         unsigned int id, lun;
 973         unsigned long serial;
 974
 975         qla2x00_block_error_handler(cmd);
 976
 977         ret = FAILED;
 978
 979         id = cmd->device->id;
 980         lun = cmd->device->lun;
 981         serial = cmd->serial_number;
 982
 983         if (!fcport)
 984                 return ret;
 985
 986         qla_printk(KERN_INFO, ha,
 987             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 988
 989         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 990                 goto eh_host_reset_lock;
 991
 992         /*
 993          * Fixme-may be dpc thread is active and processing
 994          * loop_resync,so wait a while for it to
 995          * be completed and then issue big hammer.Otherwise
 996          * it may cause I/O failure as big hammer marks the
 997          * devices as lost kicking of the port_down_timer
 998          * while dpc is stuck for the mailbox to complete.
 999          */
1000         qla2x00_wait_for_loop_ready(ha);
1001         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1002         if (qla2x00_abort_isp(ha)) {
1003                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1004                 /* failed. schedule dpc to try */
1005                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1006
1007                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1008                         goto eh_host_reset_lock;
1009         }
1010         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1011
1012         /* Waiting for our command in done_queue to be returned to OS.*/
1013         if (qla2x00_eh_wait_for_pending_commands(ha))
1014                 ret = SUCCESS;
1015
1016 eh_host_reset_lock:
1017         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1018             (ret == FAILED) ? "failed" : "succeded");
1019
1020         return ret;
1021 }
1022
1023 /*
1024 * qla2x00_loop_reset
1025 *      Issue loop reset.
1026 *
1027 * Input:
1028 *      ha = adapter block pointer.
1029 *
1030 * Returns:
1031 *      0 = success
1032 */
1033 static int
1034 qla2x00_loop_reset(scsi_qla_host_t *ha)
1035 {
1036         int status = QLA_SUCCESS;
1037         struct fc_port *fcport;
1038
1039         if (ha->flags.enable_lip_reset) {
1040                 status = qla2x00_lip_reset(ha);
1041         }
1042
1043         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1044                 list_for_each_entry(fcport, &ha->fcports, list) {
1045                         if (fcport->port_type != FCT_TARGET)
1046                                 continue;
1047
1048                         status = qla2x00_device_reset(ha, fcport);
1049                         if (status != QLA_SUCCESS)
1050                                 break;
1051                 }
1052         }
1053
1054         if (status == QLA_SUCCESS &&
1055                 ((!ha->flags.enable_target_reset &&
1056                   !ha->flags.enable_lip_reset) ||
1057                 ha->flags.enable_lip_full_login)) {
1058
1059                 status = qla2x00_full_login_lip(ha);
1060         }
1061
1062         /* Issue marker command only when we are going to start the I/O */
1063         ha->marker_needed = 1;
1064
1065         if (status) {
1066                 /* Empty */
1067                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1068                                 __func__,
1069                                 ha->host_no));
1070         } else {
1071                 /* Empty */
1072                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1073                                 __func__,
1074                                 ha->host_no));
1075         }
1076
1077         return(status);
1078 }
1079
1080 /*
1081  * qla2x00_device_reset
1082  *      Issue bus device reset message to the target.
1083  *
1084  * Input:
1085  *      ha = adapter block pointer.
1086  *      t = SCSI ID.
1087  *      TARGET_QUEUE_LOCK must be released.
1088  *      ADAPTER_STATE_LOCK must be released.
1089  *
1090  * Context:
1091  *      Kernel context.
1092  */
1093 static int
1094 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1095 {
1096         /* Abort Target command will clear Reservation */
1097         return ha->isp_ops.abort_target(reset_fcport);
1098 }
1099
1100 static int
1101 qla2xxx_slave_alloc(struct scsi_device *sdev)
1102 {
1103         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1104
1105         if (!rport || fc_remote_port_chkready(rport))
1106                 return -ENXIO;
1107
1108         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1109
1110         return 0;
1111 }
1112
1113 static int
1114 qla2xxx_slave_configure(struct scsi_device *sdev)
1115 {
1116         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1117         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1118
1119         if (sdev->tagged_supported)
1120                 scsi_activate_tcq(sdev, ha->max_q_depth);
1121         else
1122                 scsi_deactivate_tcq(sdev, ha->max_q_depth);
1123
1124         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1125
1126         return 0;
1127 }
1128
1129 static void
1130 qla2xxx_slave_destroy(struct scsi_device *sdev)
1131 {
1132         sdev->hostdata = NULL;
1133 }
1134
1135 static int
1136 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1137 {
1138         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1139         return sdev->queue_depth;
1140 }
1141
1142 static int
1143 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1144 {
1145         if (sdev->tagged_supported) {
1146                 scsi_set_tag_type(sdev, tag_type);
1147                 if (tag_type)
1148                         scsi_activate_tcq(sdev, sdev->queue_depth);
1149                 else
1150                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1151         } else
1152                 tag_type = 0;
1153
1154         return tag_type;
1155 }
1156
1157 /**
1158  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1159  * @ha: HA context
1160  *
1161  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1162  * supported addressing method.
1163  */
1164 static void
1165 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1166 {
1167         /* Assume a 32bit DMA mask. */
1168         ha->flags.enable_64bit_addressing = 0;
1169
1170         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1171                 /* Any upper-dword bits set? */
1172                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1173                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1174                         /* Ok, a 64bit DMA mask is applicable. */
1175                         ha->flags.enable_64bit_addressing = 1;
1176                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1177                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1178                         return;
1179                 }
1180         }
1181
1182         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1183         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1184 }
1185
1186 static inline void
1187 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1188 {
1189         ha->device_type = DT_EXTENDED_IDS;
1190         switch (ha->pdev->device) {
1191         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1192                 ha->device_type |= DT_ISP2100;
1193                 ha->device_type &= ~DT_EXTENDED_IDS;
1194                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1195                 break;
1196         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1197                 ha->device_type |= DT_ISP2200;
1198                 ha->device_type &= ~DT_EXTENDED_IDS;
1199                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1200                 break;
1201         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1202                 ha->device_type |= DT_ISP2300;
1203                 ha->device_type |= DT_ZIO_SUPPORTED;
1204                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1205                 break;
1206         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1207                 ha->device_type |= DT_ISP2312;
1208                 ha->device_type |= DT_ZIO_SUPPORTED;
1209                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1210                 break;
1211         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1212                 ha->device_type |= DT_ISP2322;
1213                 ha->device_type |= DT_ZIO_SUPPORTED;
1214                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1215                     ha->pdev->subsystem_device == 0x0170)
1216                         ha->device_type |= DT_OEM_001;
1217                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1218                 break;
1219         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1220                 ha->device_type |= DT_ISP6312;
1221                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1222                 break;
1223         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1224                 ha->device_type |= DT_ISP6322;
1225                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1226                 break;
1227         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1228                 ha->device_type |= DT_ISP2422;
1229                 ha->device_type |= DT_ZIO_SUPPORTED;
1230                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1231                 break;
1232         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1233                 ha->device_type |= DT_ISP2432;
1234                 ha->device_type |= DT_ZIO_SUPPORTED;
1235                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1236                 break;
1237         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1238                 ha->device_type |= DT_ISP5422;
1239                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1240                 break;
1241         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1242                 ha->device_type |= DT_ISP5432;
1243                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1244                 break;
1245         }
1246 }
1247
1248 static int
1249 qla2x00_iospace_config(scsi_qla_host_t *ha)
1250 {
1251         unsigned long   pio, pio_len, pio_flags;
1252         unsigned long   mmio, mmio_len, mmio_flags;
1253
1254         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1255         pio = pci_resource_start(ha->pdev, 0);
1256         pio_len = pci_resource_len(ha->pdev, 0);
1257         pio_flags = pci_resource_flags(ha->pdev, 0);
1258         if (pio_flags & IORESOURCE_IO) {
1259                 if (pio_len < MIN_IOBASE_LEN) {
1260                         qla_printk(KERN_WARNING, ha,
1261                             "Invalid PCI I/O region size (%s)...\n",
1262                                 pci_name(ha->pdev));
1263                         pio = 0;
1264                 }
1265         } else {
1266                 qla_printk(KERN_WARNING, ha,
1267                     "region #0 not a PIO resource (%s)...\n",
1268                     pci_name(ha->pdev));
1269                 pio = 0;
1270         }
1271
1272         /* Use MMIO operations for all accesses. */
1273         mmio = pci_resource_start(ha->pdev, 1);
1274         mmio_len = pci_resource_len(ha->pdev, 1);
1275         mmio_flags = pci_resource_flags(ha->pdev, 1);
1276
1277         if (!(mmio_flags & IORESOURCE_MEM)) {
1278                 qla_printk(KERN_ERR, ha,
1279                     "region #0 not an MMIO resource (%s), aborting\n",
1280                     pci_name(ha->pdev));
1281                 goto iospace_error_exit;
1282         }
1283         if (mmio_len < MIN_IOBASE_LEN) {
1284                 qla_printk(KERN_ERR, ha,
1285                     "Invalid PCI mem region size (%s), aborting\n",
1286                         pci_name(ha->pdev));
1287                 goto iospace_error_exit;
1288         }
1289
1290         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1291                 qla_printk(KERN_WARNING, ha,
1292                     "Failed to reserve PIO/MMIO regions (%s)\n",
1293                     pci_name(ha->pdev));
1294
1295                 goto iospace_error_exit;
1296         }
1297
1298         ha->pio_address = pio;
1299         ha->pio_length = pio_len;
1300         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1301         if (!ha->iobase) {
1302                 qla_printk(KERN_ERR, ha,
1303                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1304
1305                 goto iospace_error_exit;
1306         }
1307
1308         return (0);
1309
1310 iospace_error_exit:
1311         return (-ENOMEM);
1312 }
1313
1314 static void
1315 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1316 {
1317         unsigned long flags = 0;
1318         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1319
1320         spin_lock_irqsave(&ha->hardware_lock, flags);
1321         ha->interrupts_on = 1;
1322         /* enable risc and host interrupts */
1323         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1324         RD_REG_WORD(&reg->ictrl);
1325         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1326
1327 }
1328
1329 static void
1330 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1331 {
1332         unsigned long flags = 0;
1333         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1334
1335         spin_lock_irqsave(&ha->hardware_lock, flags);
1336         ha->interrupts_on = 0;
1337         /* disable risc and host interrupts */
1338         WRT_REG_WORD(&reg->ictrl, 0);
1339         RD_REG_WORD(&reg->ictrl);
1340         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1341 }
1342
1343 static void
1344 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1345 {
1346         unsigned long flags = 0;
1347         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1348
1349         spin_lock_irqsave(&ha->hardware_lock, flags);
1350         ha->interrupts_on = 1;
1351         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1352         RD_REG_DWORD(&reg->ictrl);
1353         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1354 }
1355
1356 static void
1357 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1358 {
1359         unsigned long flags = 0;
1360         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1361
1362         spin_lock_irqsave(&ha->hardware_lock, flags);
1363         ha->interrupts_on = 0;
1364         WRT_REG_DWORD(&reg->ictrl, 0);
1365         RD_REG_DWORD(&reg->ictrl);
1366         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1367 }
1368
1369 /*
1370  * PCI driver interface
1371  */
1372 static int __devinit
1373 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1374 {
1375         int     ret = -ENODEV;
1376         device_reg_t __iomem *reg;
1377         struct Scsi_Host *host;
1378         scsi_qla_host_t *ha;
1379         unsigned long   flags = 0;
1380         unsigned long   wait_switch = 0;
1381         char pci_info[20];
1382         char fw_str[30];
1383         fc_port_t *fcport;
1384         struct scsi_host_template *sht;
1385
1386         if (pci_enable_device(pdev))
1387                 goto probe_out;
1388
1389         sht = &qla2x00_driver_template;
1390         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1391             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1392                 sht = &qla24xx_driver_template;
1393         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1394         if (host == NULL) {
1395                 printk(KERN_WARNING
1396                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1397                 goto probe_disable_device;
1398         }
1399
1400         /* Clear our data area */
1401         ha = (scsi_qla_host_t *)host->hostdata;
1402         memset(ha, 0, sizeof(scsi_qla_host_t));
1403
1404         ha->pdev = pdev;
1405         ha->host = host;
1406         ha->host_no = host->host_no;
1407         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1408
1409         /* Set ISP-type information. */
1410         qla2x00_set_isp_flags(ha);
1411
1412         /* Configure PCI I/O space */
1413         ret = qla2x00_iospace_config(ha);
1414         if (ret)
1415                 goto probe_failed;
1416
1417         qla_printk(KERN_INFO, ha,
1418             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1419             ha->iobase);
1420
1421         spin_lock_init(&ha->hardware_lock);
1422
1423         ha->prev_topology = 0;
1424         ha->init_cb_size = sizeof(init_cb_t);
1425         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1426         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1427         ha->optrom_size = OPTROM_SIZE_2300;
1428
1429         ha->max_q_depth = MAX_Q_DEPTH;
1430         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1431                 ha->max_q_depth = ql2xmaxqdepth;
1432
1433         /* Assign ISP specific operations. */
1434         ha->isp_ops.pci_config          = qla2100_pci_config;
1435         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1436         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1437         ha->isp_ops.config_rings        = qla2x00_config_rings;
1438         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1439         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1440         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1441         ha->isp_ops.load_risc           = qla2x00_load_risc;
1442         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1443         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1444         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1445         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1446         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1447         ha->isp_ops.abort_command       = qla2x00_abort_command;
1448         ha->isp_ops.abort_target        = qla2x00_abort_target;
1449         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1450         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1451         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1452         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1453         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1454         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1455         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1456         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1457         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1458         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1459         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1460         if (IS_QLA2100(ha)) {
1461                 host->max_id = MAX_TARGETS_2100;
1462                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1463                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1464                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1465                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1466                 host->sg_tablesize = 32;
1467                 ha->gid_list_info_size = 4;
1468         } else if (IS_QLA2200(ha)) {
1469                 host->max_id = MAX_TARGETS_2200;
1470                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1471                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1472                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1473                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1474                 ha->gid_list_info_size = 4;
1475         } else if (IS_QLA23XX(ha)) {
1476                 host->max_id = MAX_TARGETS_2200;
1477                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1478                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1479                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1480                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1481                 ha->isp_ops.pci_config = qla2300_pci_config;
1482                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1483                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1484                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1485                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1486                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1487                 ha->gid_list_info_size = 6;
1488                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1489                         ha->optrom_size = OPTROM_SIZE_2322;
1490         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1491                 host->max_id = MAX_TARGETS_2200;
1492                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1493                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1494                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1495                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1496                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1497                 ha->mgmt_svr_loop_id = 10;
1498                 ha->isp_ops.pci_config = qla24xx_pci_config;
1499                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1500                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1501                 ha->isp_ops.config_rings = qla24xx_config_rings;
1502                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1503                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1504                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1505                 ha->isp_ops.load_risc = qla24xx_load_risc;
1506                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1507                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1508                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1509                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1510                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1511                 ha->isp_ops.abort_command = qla24xx_abort_command;
1512                 ha->isp_ops.abort_target = qla24xx_abort_target;
1513                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1514                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1515                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1516                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1517                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1518                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1519                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1520                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1521                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1522                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1523                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1524                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1525                 ha->gid_list_info_size = 8;
1526                 ha->optrom_size = OPTROM_SIZE_24XX;
1527         }
1528         host->can_queue = ha->request_q_length + 128;
1529
1530         /* load the F/W, read paramaters, and init the H/W */
1531         ha->instance = num_hosts;
1532
1533         init_MUTEX(&ha->mbx_cmd_sem);
1534         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1535
1536         INIT_LIST_HEAD(&ha->list);
1537         INIT_LIST_HEAD(&ha->fcports);
1538
1539         /*
1540          * These locks are used to prevent more than one CPU
1541          * from modifying the queue at the same time. The
1542          * higher level "host_lock" will reduce most
1543          * contention for these locks.
1544          */
1545         spin_lock_init(&ha->mbx_reg_lock);
1546
1547         qla2x00_config_dma_addressing(ha);
1548         if (qla2x00_mem_alloc(ha)) {
1549                 qla_printk(KERN_WARNING, ha,
1550                     "[ERROR] Failed to allocate memory for adapter\n");
1551
1552                 ret = -ENOMEM;
1553                 goto probe_failed;
1554         }
1555
1556         if (qla2x00_initialize_adapter(ha) &&
1557             !(ha->device_flags & DFLG_NO_CABLE)) {
1558
1559                 qla_printk(KERN_WARNING, ha,
1560                     "Failed to initialize adapter\n");
1561
1562                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1563                     "Adapter flags %x.\n",
1564                     ha->host_no, ha->device_flags));
1565
1566                 ret = -ENODEV;
1567                 goto probe_failed;
1568         }
1569
1570         /*
1571          * Startup the kernel thread for this host adapter
1572          */
1573         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1574                         "%s_dpc", ha->host_str);
1575         if (IS_ERR(ha->dpc_thread)) {
1576                 qla_printk(KERN_WARNING, ha,
1577                     "Unable to start DPC thread!\n");
1578                 ret = PTR_ERR(ha->dpc_thread);
1579                 goto probe_failed;
1580         }
1581
1582         host->this_id = 255;
1583         host->cmd_per_lun = 3;
1584         host->unique_id = ha->instance;
1585         host->max_cmd_len = MAX_CMDSZ;
1586         host->max_channel = MAX_BUSES - 1;
1587         host->max_lun = MAX_LUNS;
1588         host->transportt = qla2xxx_transport_template;
1589
1590         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1591             IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1592         if (ret) {
1593                 qla_printk(KERN_WARNING, ha,
1594                     "Failed to reserve interrupt %d already in use.\n",
1595                     pdev->irq);
1596                 goto probe_failed;
1597         }
1598         host->irq = pdev->irq;
1599
1600         /* Initialized the timer */
1601         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1602
1603         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1604             ha->host_no, ha));
1605
1606         ha->isp_ops.disable_intrs(ha);
1607
1608         spin_lock_irqsave(&ha->hardware_lock, flags);
1609         reg = ha->iobase;
1610         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1611                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1612                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1613         } else {
1614                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1615                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1616                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1617
1618                 /* Enable proper parity */
1619                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1620                         if (IS_QLA2300(ha))
1621                                 /* SRAM parity */
1622                                 WRT_REG_WORD(&reg->isp.hccr,
1623                                     (HCCR_ENABLE_PARITY + 0x1));
1624                         else
1625                                 /* SRAM, Instruction RAM and GP RAM parity */
1626                                 WRT_REG_WORD(&reg->isp.hccr,
1627                                     (HCCR_ENABLE_PARITY + 0x7));
1628                 }
1629         }
1630         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1631
1632         ha->isp_ops.enable_intrs(ha);
1633
1634         /* v2.19.5b6 */
1635         /*
1636          * Wait around max loop_reset_delay secs for the devices to come
1637          * on-line. We don't want Linux scanning before we are ready.
1638          *
1639          */
1640         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1641             time_before(jiffies,wait_switch) &&
1642              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1643              && (ha->device_flags & SWITCH_FOUND) ;) {
1644
1645                 qla2x00_check_fabric_devices(ha);
1646
1647                 msleep(10);
1648         }
1649
1650         pci_set_drvdata(pdev, ha);
1651         ha->flags.init_done = 1;
1652         num_hosts++;
1653
1654         ret = scsi_add_host(host, &pdev->dev);
1655         if (ret)
1656                 goto probe_failed;
1657
1658         qla2x00_alloc_sysfs_attr(ha);
1659
1660         qla2x00_init_host_attr(ha);
1661
1662         qla_printk(KERN_INFO, ha, "\n"
1663             " QLogic Fibre Channel HBA Driver: %s\n"
1664             "  QLogic %s - %s\n"
1665             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1666             qla2x00_version_str, ha->model_number,
1667             ha->model_desc ? ha->model_desc: "", pdev->device,
1668             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1669             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1670             ha->isp_ops.fw_version_str(ha, fw_str));
1671
1672         /* Go with fc_rport registration. */
1673         list_for_each_entry(fcport, &ha->fcports, list)
1674                 qla2x00_reg_remote_port(ha, fcport);
1675
1676         return 0;
1677
1678 probe_failed:
1679         qla2x00_free_device(ha);
1680
1681         scsi_host_put(host);
1682
1683 probe_disable_device:
1684         pci_disable_device(pdev);
1685
1686 probe_out:
1687         return ret;
1688 }
1689
1690 static void __devexit
1691 qla2x00_remove_one(struct pci_dev *pdev)
1692 {
1693         scsi_qla_host_t *ha;
1694
1695         ha = pci_get_drvdata(pdev);
1696
1697         qla2x00_free_sysfs_attr(ha);
1698
1699         fc_remove_host(ha->host);
1700
1701         scsi_remove_host(ha->host);
1702
1703         qla2x00_free_device(ha);
1704
1705         scsi_host_put(ha->host);
1706
1707         pci_set_drvdata(pdev, NULL);
1708 }
1709
1710 static void
1711 qla2x00_free_device(scsi_qla_host_t *ha)
1712 {
1713         /* Disable timer */
1714         if (ha->timer_active)
1715                 qla2x00_stop_timer(ha);
1716
1717         /* Kill the kernel thread for this host */
1718         if (ha->dpc_thread) {
1719                 struct task_struct *t = ha->dpc_thread;
1720
1721                 /*
1722                  * qla2xxx_wake_dpc checks for ->dpc_thread
1723                  * so we need to zero it out.
1724                  */
1725                 ha->dpc_thread = NULL;
1726                 kthread_stop(t);
1727         }
1728
1729         if (ha->eft)
1730                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1731
1732         ha->flags.online = 0;
1733
1734         /* Stop currently executing firmware. */
1735         qla2x00_try_to_stop_firmware(ha);
1736
1737         /* turn-off interrupts on the card */
1738         if (ha->interrupts_on)
1739                 ha->isp_ops.disable_intrs(ha);
1740
1741         qla2x00_mem_free(ha);
1742
1743         /* Detach interrupts */
1744         if (ha->host->irq)
1745                 free_irq(ha->host->irq, ha);
1746
1747         /* release io space registers  */
1748         if (ha->iobase)
1749                 iounmap(ha->iobase);
1750         pci_release_regions(ha->pdev);
1751
1752         pci_disable_device(ha->pdev);
1753 }
1754
1755 static inline void
1756 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1757     int defer)
1758 {
1759         unsigned long flags;
1760         struct fc_rport *rport;
1761
1762         if (!fcport->rport)
1763                 return;
1764
1765         rport = fcport->rport;
1766         if (defer) {
1767                 spin_lock_irqsave(&fcport->rport_lock, flags);
1768                 fcport->drport = rport;
1769                 fcport->rport = NULL;
1770                 *(fc_port_t **)rport->dd_data = NULL;
1771                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1772                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1773         } else {
1774                 spin_lock_irqsave(&fcport->rport_lock, flags);
1775                 fcport->rport = NULL;
1776                 *(fc_port_t **)rport->dd_data = NULL;
1777                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1778                 fc_remote_port_delete(rport);
1779         }
1780 }
1781
1782 /*
1783  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1784  *
1785  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1786  *
1787  * Return: None.
1788  *
1789  * Context:
1790  */
1791 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1792     int do_login, int defer)
1793 {
1794         if (atomic_read(&fcport->state) == FCS_ONLINE)
1795                 qla2x00_schedule_rport_del(ha, fcport, defer);
1796
1797         /*
1798          * We may need to retry the login, so don't change the state of the
1799          * port but do the retries.
1800          */
1801         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1802                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1803
1804         if (!do_login)
1805                 return;
1806
1807         if (fcport->login_retry == 0) {
1808                 fcport->login_retry = ha->login_retry_count;
1809                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1810
1811                 DEBUG(printk("scsi(%ld): Port login retry: "
1812                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1813                     "id = 0x%04x retry cnt=%d\n",
1814                     ha->host_no,
1815                     fcport->port_name[0],
1816                     fcport->port_name[1],
1817                     fcport->port_name[2],
1818                     fcport->port_name[3],
1819                     fcport->port_name[4],
1820                     fcport->port_name[5],
1821                     fcport->port_name[6],
1822                     fcport->port_name[7],
1823                     fcport->loop_id,
1824                     fcport->login_retry));
1825         }
1826 }
1827
1828 /*
1829  * qla2x00_mark_all_devices_lost
1830  *      Updates fcport state when device goes offline.
1831  *
1832  * Input:
1833  *      ha = adapter block pointer.
1834  *      fcport = port structure pointer.
1835  *
1836  * Return:
1837  *      None.
1838  *
1839  * Context:
1840  */
1841 void
1842 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1843 {
1844         fc_port_t *fcport;
1845
1846         list_for_each_entry(fcport, &ha->fcports, list) {
1847                 if (fcport->port_type != FCT_TARGET)
1848                         continue;
1849
1850                 /*
1851                  * No point in marking the device as lost, if the device is
1852                  * already DEAD.
1853                  */
1854                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1855                         continue;
1856                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1857                         qla2x00_schedule_rport_del(ha, fcport, defer);
1858                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1859         }
1860
1861         if (defer)
1862                 qla2xxx_wake_dpc(ha);
1863 }
1864
1865 /*
1866 * qla2x00_mem_alloc
1867 *      Allocates adapter memory.
1868 *
1869 * Returns:
1870 *      0  = success.
1871 *      1  = failure.
1872 */
1873 static uint8_t
1874 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1875 {
1876         char    name[16];
1877         uint8_t   status = 1;
1878         int     retry= 10;
1879
1880         do {
1881                 /*
1882                  * This will loop only once if everything goes well, else some
1883                  * number of retries will be performed to get around a kernel
1884                  * bug where available mem is not allocated until after a
1885                  * little delay and a retry.
1886                  */
1887                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1888                     (ha->request_q_length + 1) * sizeof(request_t),
1889                     &ha->request_dma, GFP_KERNEL);
1890                 if (ha->request_ring == NULL) {
1891                         qla_printk(KERN_WARNING, ha,
1892                             "Memory Allocation failed - request_ring\n");
1893
1894                         qla2x00_mem_free(ha);
1895                         msleep(100);
1896
1897                         continue;
1898                 }
1899
1900                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1901                     (ha->response_q_length + 1) * sizeof(response_t),
1902                     &ha->response_dma, GFP_KERNEL);
1903                 if (ha->response_ring == NULL) {
1904                         qla_printk(KERN_WARNING, ha,
1905                             "Memory Allocation failed - response_ring\n");
1906
1907                         qla2x00_mem_free(ha);
1908                         msleep(100);
1909
1910                         continue;
1911                 }
1912
1913                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1914                     &ha->gid_list_dma, GFP_KERNEL);
1915                 if (ha->gid_list == NULL) {
1916                         qla_printk(KERN_WARNING, ha,
1917                             "Memory Allocation failed - gid_list\n");
1918
1919                         qla2x00_mem_free(ha);
1920                         msleep(100);
1921
1922                         continue;
1923                 }
1924
1925                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1926                     ha->host_no);
1927                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1928                     DMA_POOL_SIZE, 8, 0);
1929                 if (ha->s_dma_pool == NULL) {
1930                         qla_printk(KERN_WARNING, ha,
1931                             "Memory Allocation failed - s_dma_pool\n");
1932
1933                         qla2x00_mem_free(ha);
1934                         msleep(100);
1935
1936                         continue;
1937                 }
1938
1939                 /* get consistent memory allocated for init control block */
1940                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1941                     &ha->init_cb_dma);
1942                 if (ha->init_cb == NULL) {
1943                         qla_printk(KERN_WARNING, ha,
1944                             "Memory Allocation failed - init_cb\n");
1945
1946                         qla2x00_mem_free(ha);
1947                         msleep(100);
1948
1949                         continue;
1950                 }
1951                 memset(ha->init_cb, 0, ha->init_cb_size);
1952
1953                 if (qla2x00_allocate_sp_pool(ha)) {
1954                         qla_printk(KERN_WARNING, ha,
1955                             "Memory Allocation failed - "
1956                             "qla2x00_allocate_sp_pool()\n");
1957
1958                         qla2x00_mem_free(ha);
1959                         msleep(100);
1960
1961                         continue;
1962                 }
1963
1964                 /* Allocate memory for SNS commands */
1965                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1966                         /* Get consistent memory allocated for SNS commands */
1967                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1968                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1969                             GFP_KERNEL);
1970                         if (ha->sns_cmd == NULL) {
1971                                 /* error */
1972                                 qla_printk(KERN_WARNING, ha,
1973                                     "Memory Allocation failed - sns_cmd\n");
1974
1975                                 qla2x00_mem_free(ha);
1976                                 msleep(100);
1977
1978                                 continue;
1979                         }
1980                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1981                 } else {
1982                         /* Get consistent memory allocated for MS IOCB */
1983                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1984                             &ha->ms_iocb_dma);
1985                         if (ha->ms_iocb == NULL) {
1986                                 /* error */
1987                                 qla_printk(KERN_WARNING, ha,
1988                                     "Memory Allocation failed - ms_iocb\n");
1989
1990                                 qla2x00_mem_free(ha);
1991                                 msleep(100);
1992
1993                                 continue;
1994                         }
1995                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1996
1997                         /*
1998                          * Get consistent memory allocated for CT SNS
1999                          * commands
2000                          */
2001                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2002                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2003                             GFP_KERNEL);
2004                         if (ha->ct_sns == NULL) {
2005                                 /* error */
2006                                 qla_printk(KERN_WARNING, ha,
2007                                     "Memory Allocation failed - ct_sns\n");
2008
2009                                 qla2x00_mem_free(ha);
2010                                 msleep(100);
2011
2012                                 continue;
2013                         }
2014                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2015
2016                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2017                                 /*
2018                                  * Get consistent memory allocated for SFP
2019                                  * block.
2020                                  */
2021                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2022                                     GFP_KERNEL, &ha->sfp_data_dma);
2023                                 if (ha->sfp_data == NULL) {
2024                                         qla_printk(KERN_WARNING, ha,
2025                                             "Memory Allocation failed - "
2026                                             "sfp_data\n");
2027
2028                                         qla2x00_mem_free(ha);
2029                                         msleep(100);
2030
2031                                         continue;
2032                                 }
2033                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2034                         }
2035                 }
2036
2037                 /* Done all allocations without any error. */
2038                 status = 0;
2039
2040         } while (retry-- && status != 0);
2041
2042         if (status) {
2043                 printk(KERN_WARNING
2044                         "%s(): **** FAILED ****\n", __func__);
2045         }
2046
2047         return(status);
2048 }
2049
2050 /*
2051 * qla2x00_mem_free
2052 *      Frees all adapter allocated memory.
2053 *
2054 * Input:
2055 *      ha = adapter block pointer.
2056 */
2057 static void
2058 qla2x00_mem_free(scsi_qla_host_t *ha)
2059 {
2060         struct list_head        *fcpl, *fcptemp;
2061         fc_port_t       *fcport;
2062
2063         if (ha == NULL) {
2064                 /* error */
2065                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2066                 return;
2067         }
2068
2069         /* free sp pool */
2070         qla2x00_free_sp_pool(ha);
2071
2072         if (ha->fw_dump) {
2073                 if (ha->eft)
2074                         dma_free_coherent(&ha->pdev->dev,
2075                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2076                 vfree(ha->fw_dump);
2077         }
2078
2079         if (ha->sns_cmd)
2080                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2081                     ha->sns_cmd, ha->sns_cmd_dma);
2082
2083         if (ha->ct_sns)
2084                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2085                     ha->ct_sns, ha->ct_sns_dma);
2086
2087         if (ha->sfp_data)
2088                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2089
2090         if (ha->ms_iocb)
2091                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2092
2093         if (ha->init_cb)
2094                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2095
2096         if (ha->s_dma_pool)
2097                 dma_pool_destroy(ha->s_dma_pool);
2098
2099         if (ha->gid_list)
2100                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2101                     ha->gid_list_dma);
2102
2103         if (ha->response_ring)
2104                 dma_free_coherent(&ha->pdev->dev,
2105                     (ha->response_q_length + 1) * sizeof(response_t),
2106                     ha->response_ring, ha->response_dma);
2107
2108         if (ha->request_ring)
2109                 dma_free_coherent(&ha->pdev->dev,
2110                     (ha->request_q_length + 1) * sizeof(request_t),
2111                     ha->request_ring, ha->request_dma);
2112
2113         ha->eft = NULL;
2114         ha->eft_dma = 0;
2115         ha->sns_cmd = NULL;
2116         ha->sns_cmd_dma = 0;
2117         ha->ct_sns = NULL;
2118         ha->ct_sns_dma = 0;
2119         ha->ms_iocb = NULL;
2120         ha->ms_iocb_dma = 0;
2121         ha->init_cb = NULL;
2122         ha->init_cb_dma = 0;
2123
2124         ha->s_dma_pool = NULL;
2125
2126         ha->gid_list = NULL;
2127         ha->gid_list_dma = 0;
2128
2129         ha->response_ring = NULL;
2130         ha->response_dma = 0;
2131         ha->request_ring = NULL;
2132         ha->request_dma = 0;
2133
2134         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2135                 fcport = list_entry(fcpl, fc_port_t, list);
2136
2137                 /* fc ports */
2138                 list_del_init(&fcport->list);
2139                 kfree(fcport);
2140         }
2141         INIT_LIST_HEAD(&ha->fcports);
2142
2143         ha->fw_dump = NULL;
2144         ha->fw_dumped = 0;
2145         ha->fw_dump_reading = 0;
2146
2147         vfree(ha->optrom_buffer);
2148 }
2149
2150 /*
2151  * qla2x00_allocate_sp_pool
2152  *       This routine is called during initialization to allocate
2153  *       memory for local srb_t.
2154  *
2155  * Input:
2156  *       ha   = adapter block pointer.
2157  *
2158  * Context:
2159  *      Kernel context.
2160  */
2161 static int
2162 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2163 {
2164         int      rval;
2165
2166         rval = QLA_SUCCESS;
2167         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2168         if (ha->srb_mempool == NULL) {
2169                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2170                 rval = QLA_FUNCTION_FAILED;
2171         }
2172         return (rval);
2173 }
2174
2175 /*
2176  *  This routine frees all adapter allocated memory.
2177  *
2178  */
2179 static void
2180 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2181 {
2182         if (ha->srb_mempool) {
2183                 mempool_destroy(ha->srb_mempool);
2184                 ha->srb_mempool = NULL;
2185         }
2186 }
2187
2188 /**************************************************************************
2189 * qla2x00_do_dpc
2190 *   This kernel thread is a task that is schedule by the interrupt handler
2191 *   to perform the background processing for interrupts.
2192 *
2193 * Notes:
2194 * This task always run in the context of a kernel thread.  It
2195 * is kick-off by the driver's detect code and starts up
2196 * up one per adapter. It immediately goes to sleep and waits for
2197 * some fibre event.  When either the interrupt handler or
2198 * the timer routine detects a event it will one of the task
2199 * bits then wake us up.
2200 **************************************************************************/
2201 static int
2202 qla2x00_do_dpc(void *data)
2203 {
2204         scsi_qla_host_t *ha;
2205         fc_port_t       *fcport;
2206         uint8_t         status;
2207         uint16_t        next_loopid;
2208
2209         ha = (scsi_qla_host_t *)data;
2210
2211         set_user_nice(current, -20);
2212
2213         while (!kthread_should_stop()) {
2214                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2215
2216                 set_current_state(TASK_INTERRUPTIBLE);
2217                 schedule();
2218                 __set_current_state(TASK_RUNNING);
2219
2220                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2221
2222                 /* Initialization not yet finished. Don't do anything yet. */
2223                 if (!ha->flags.init_done)
2224                         continue;
2225
2226                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2227
2228                 ha->dpc_active = 1;
2229
2230                 if (ha->flags.mbox_busy) {
2231                         ha->dpc_active = 0;
2232                         continue;
2233                 }
2234
2235                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2236
2237                         DEBUG(printk("scsi(%ld): dpc: sched "
2238                             "qla2x00_abort_isp ha = %p\n",
2239                             ha->host_no, ha));
2240                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2241                             &ha->dpc_flags))) {
2242
2243                                 if (qla2x00_abort_isp(ha)) {
2244                                         /* failed. retry later */
2245                                         set_bit(ISP_ABORT_NEEDED,
2246                                             &ha->dpc_flags);
2247                                 }
2248                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2249                         }
2250                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2251                             ha->host_no));
2252                 }
2253
2254                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2255                         qla2x00_update_fcports(ha);
2256
2257                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2258                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2259                             ha->host_no));
2260                         qla2x00_loop_reset(ha);
2261                 }
2262
2263                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2264                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2265
2266                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2267                             ha->host_no));
2268
2269                         qla2x00_rst_aen(ha);
2270                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2271                 }
2272
2273                 /* Retry each device up to login retry count */
2274                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2275                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2276                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2277
2278                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2279                             ha->host_no));
2280
2281                         next_loopid = 0;
2282                         list_for_each_entry(fcport, &ha->fcports, list) {
2283                                 /*
2284                                  * If the port is not ONLINE then try to login
2285                                  * to it if we haven't run out of retries.
2286                                  */
2287                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2288                                     fcport->login_retry) {
2289
2290                                         fcport->login_retry--;
2291                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2292                                                 if (fcport->flags &
2293                                                     FCF_TAPE_PRESENT)
2294                                                         ha->isp_ops.fabric_logout(
2295                                                             ha, fcport->loop_id,
2296                                                             fcport->d_id.b.domain,
2297                                                             fcport->d_id.b.area,
2298                                                             fcport->d_id.b.al_pa);
2299                                                 status = qla2x00_fabric_login(
2300                                                     ha, fcport, &next_loopid);
2301                                         } else
2302                                                 status =
2303                                                     qla2x00_local_device_login(
2304                                                         ha, fcport);
2305
2306                                         if (status == QLA_SUCCESS) {
2307                                                 fcport->old_loop_id = fcport->loop_id;
2308
2309                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2310                                                     ha->host_no, fcport->loop_id));
2311
2312                                                 qla2x00_update_fcport(ha,
2313                                                     fcport);
2314                                         } else if (status == 1) {
2315                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2316                                                 /* retry the login again */
2317                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2318                                                     ha->host_no,
2319                                                     fcport->login_retry, fcport->loop_id));
2320                                         } else {
2321                                                 fcport->login_retry = 0;
2322                                         }
2323                                 }
2324                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2325                                         break;
2326                         }
2327                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2328                             ha->host_no));
2329                 }
2330
2331                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2332                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2333
2334                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2335                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2336                             ha->host_no));
2337
2338                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2339
2340                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2341                             ha->host_no));
2342                 }
2343
2344                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2345
2346                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2347                             ha->host_no));
2348
2349                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2350                             &ha->dpc_flags))) {
2351
2352                                 qla2x00_loop_resync(ha);
2353
2354                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2355                         }
2356
2357                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2358                             ha->host_no));
2359                 }
2360
2361                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2362
2363                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2364                             ha->host_no));
2365
2366                         qla2x00_rescan_fcports(ha);
2367
2368                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2369                             "end.\n",
2370                             ha->host_no));
2371                 }
2372
2373                 if (!ha->interrupts_on)
2374                         ha->isp_ops.enable_intrs(ha);
2375
2376                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2377                         ha->isp_ops.beacon_blink(ha);
2378
2379                 ha->dpc_active = 0;
2380         } /* End of while(1) */
2381
2382         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2383
2384         /*
2385          * Make sure that nobody tries to wake us up again.
2386          */
2387         ha->dpc_active = 0;
2388
2389         return 0;
2390 }
2391
2392 void
2393 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2394 {
2395         if (ha->dpc_thread)
2396                 wake_up_process(ha->dpc_thread);
2397 }
2398
2399 /*
2400 *  qla2x00_rst_aen
2401 *      Processes asynchronous reset.
2402 *
2403 * Input:
2404 *      ha  = adapter block pointer.
2405 */
2406 static void
2407 qla2x00_rst_aen(scsi_qla_host_t *ha)
2408 {
2409         if (ha->flags.online && !ha->flags.reset_active &&
2410             !atomic_read(&ha->loop_down_timer) &&
2411             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2412                 do {
2413                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2414
2415                         /*
2416                          * Issue marker command only when we are going to start
2417                          * the I/O.
2418                          */
2419                         ha->marker_needed = 1;
2420                 } while (!atomic_read(&ha->loop_down_timer) &&
2421                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2422         }
2423 }
2424
2425 static void
2426 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2427 {
2428         struct scsi_cmnd *cmd = sp->cmd;
2429
2430         if (sp->flags & SRB_DMA_VALID) {
2431                 if (cmd->use_sg) {
2432                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2433                             cmd->use_sg, cmd->sc_data_direction);
2434                 } else if (cmd->request_bufflen) {
2435                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2436                             cmd->request_bufflen, cmd->sc_data_direction);
2437                 }
2438                 sp->flags &= ~SRB_DMA_VALID;
2439         }
2440         CMD_SP(cmd) = NULL;
2441 }
2442
2443 void
2444 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2445 {
2446         struct scsi_cmnd *cmd = sp->cmd;
2447
2448         qla2x00_sp_free_dma(ha, sp);
2449
2450         mempool_free(sp, ha->srb_mempool);
2451
2452         cmd->scsi_done(cmd);
2453 }
2454
2455 /**************************************************************************
2456 *   qla2x00_timer
2457 *
2458 * Description:
2459 *   One second timer
2460 *
2461 * Context: Interrupt
2462 ***************************************************************************/
2463 static void
2464 qla2x00_timer(scsi_qla_host_t *ha)
2465 {
2466         unsigned long   cpu_flags = 0;
2467         fc_port_t       *fcport;
2468         int             start_dpc = 0;
2469         int             index;
2470         srb_t           *sp;
2471         int             t;
2472
2473         /*
2474          * Ports - Port down timer.
2475          *
2476          * Whenever, a port is in the LOST state we start decrementing its port
2477          * down timer every second until it reaches zero. Once  it reaches zero
2478          * the port it marked DEAD.
2479          */
2480         t = 0;
2481         list_for_each_entry(fcport, &ha->fcports, list) {
2482                 if (fcport->port_type != FCT_TARGET)
2483                         continue;
2484
2485                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2486
2487                         if (atomic_read(&fcport->port_down_timer) == 0)
2488                                 continue;
2489
2490                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2491                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2492
2493                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2494                             "%d remaining\n",
2495                             ha->host_no,
2496                             t, atomic_read(&fcport->port_down_timer)));
2497                 }
2498                 t++;
2499         } /* End of for fcport  */
2500
2501
2502         /* Loop down handler. */
2503         if (atomic_read(&ha->loop_down_timer) > 0 &&
2504             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2505
2506                 if (atomic_read(&ha->loop_down_timer) ==
2507                     ha->loop_down_abort_time) {
2508
2509                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2510                             "queues before time expire\n",
2511                             ha->host_no));
2512
2513                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2514                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2515
2516                         /* Schedule an ISP abort to return any tape commands. */
2517                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2518                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2519                             index++) {
2520                                 fc_port_t *sfcp;
2521
2522                                 sp = ha->outstanding_cmds[index];
2523                                 if (!sp)
2524                                         continue;
2525                                 sfcp = sp->fcport;
2526                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2527                                         continue;
2528
2529                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2530                                 break;
2531                         }
2532                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2533
2534                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2535                         start_dpc++;
2536                 }
2537
2538                 /* if the loop has been down for 4 minutes, reinit adapter */
2539                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2540                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2541                             "restarting queues.\n",
2542                             ha->host_no));
2543
2544                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2545                         start_dpc++;
2546
2547                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2548                                 DEBUG(printk("scsi(%ld): Loop down - "
2549                                     "aborting ISP.\n",
2550                                     ha->host_no));
2551                                 qla_printk(KERN_WARNING, ha,
2552                                     "Loop down - aborting ISP.\n");
2553
2554                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2555                         }
2556                 }
2557                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2558                     ha->host_no,
2559                     atomic_read(&ha->loop_down_timer)));
2560         }
2561
2562         /* Check if beacon LED needs to be blinked */
2563         if (ha->beacon_blink_led == 1) {
2564                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2565                 start_dpc++;
2566         }
2567
2568         /* Schedule the DPC routine if needed */
2569         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2570             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2571             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2572             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2573             start_dpc ||
2574             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2575             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2576             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2577             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2578                 qla2xxx_wake_dpc(ha);
2579
2580         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2581 }
2582
2583 /* XXX(hch): crude hack to emulate a down_timeout() */
2584 int
2585 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2586 {
2587         const unsigned int step = 100; /* msecs */
2588         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2589
2590         do {
2591                 if (!down_trylock(sema))
2592                         return 0;
2593                 if (msleep_interruptible(step))
2594                         break;
2595         } while (--iterations >= 0);
2596
2597         return -ETIMEDOUT;
2598 }
2599
2600 /* Firmware interface routines. */
2601
2602 #define FW_BLOBS        5
2603 #define FW_ISP21XX      0
2604 #define FW_ISP22XX      1
2605 #define FW_ISP2300      2
2606 #define FW_ISP2322      3
2607 #define FW_ISP24XX      4
2608
2609 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2610 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2611 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2612 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2613 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2614
2615 static DECLARE_MUTEX(qla_fw_lock);
2616
2617 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2618         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2619         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2620         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2621         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2622         { .name = FW_FILE_ISP24XX, },
2623 };
2624
2625 struct fw_blob *
2626 qla2x00_request_firmware(scsi_qla_host_t *ha)
2627 {
2628         struct fw_blob *blob;
2629
2630         blob = NULL;
2631         if (IS_QLA2100(ha)) {
2632                 blob = &qla_fw_blobs[FW_ISP21XX];
2633         } else if (IS_QLA2200(ha)) {
2634                 blob = &qla_fw_blobs[FW_ISP22XX];
2635         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2636                 blob = &qla_fw_blobs[FW_ISP2300];
2637         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2638                 blob = &qla_fw_blobs[FW_ISP2322];
2639         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2640                 blob = &qla_fw_blobs[FW_ISP24XX];
2641         }
2642
2643         down(&qla_fw_lock);
2644         if (blob->fw)
2645                 goto out;
2646
2647         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2648                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2649                     "(%s).\n", ha->host_no, blob->name));
2650                 blob->fw = NULL;
2651                 blob = NULL;
2652                 goto out;
2653         }
2654
2655 out:
2656         up(&qla_fw_lock);
2657         return blob;
2658 }
2659
2660 static void
2661 qla2x00_release_firmware(void)
2662 {
2663         int idx;
2664
2665         down(&qla_fw_lock);
2666         for (idx = 0; idx < FW_BLOBS; idx++)
2667                 if (qla_fw_blobs[idx].fw)
2668                         release_firmware(qla_fw_blobs[idx].fw);
2669         up(&qla_fw_lock);
2670 }
2671
2672 static struct pci_device_id qla2xxx_pci_tbl[] = {
2673         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2674         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2675         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2676         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2677         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2678         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2679         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2680         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2681         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2682         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2683         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2684         { 0 },
2685 };
2686 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2687
2688 static struct pci_driver qla2xxx_pci_driver = {
2689         .name           = QLA2XXX_DRIVER_NAME,
2690         .driver         = {
2691                 .owner          = THIS_MODULE,
2692         },
2693         .id_table       = qla2xxx_pci_tbl,
2694         .probe          = qla2x00_probe_one,
2695         .remove         = __devexit_p(qla2x00_remove_one),
2696 };
2697
2698 /**
2699  * qla2x00_module_init - Module initialization.
2700  **/
2701 static int __init
2702 qla2x00_module_init(void)
2703 {
2704         int ret = 0;
2705
2706         /* Allocate cache for SRBs. */
2707         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2708             SLAB_HWCACHE_ALIGN, NULL, NULL);
2709         if (srb_cachep == NULL) {
2710                 printk(KERN_ERR
2711                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2712                 return -ENOMEM;
2713         }
2714
2715         /* Derive version string. */
2716         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2717         if (ql2xextended_error_logging)
2718                 strcat(qla2x00_version_str, "-debug");
2719
2720         qla2xxx_transport_template =
2721             fc_attach_transport(&qla2xxx_transport_functions);
2722         if (!qla2xxx_transport_template)
2723                 return -ENODEV;
2724
2725         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2726         ret = pci_register_driver(&qla2xxx_pci_driver);
2727         if (ret) {
2728                 kmem_cache_destroy(srb_cachep);
2729                 fc_release_transport(qla2xxx_transport_template);
2730         }
2731         return ret;
2732 }
2733
2734 /**
2735  * qla2x00_module_exit - Module cleanup.
2736  **/
2737 static void __exit
2738 qla2x00_module_exit(void)
2739 {
2740         pci_unregister_driver(&qla2xxx_pci_driver);
2741         qla2x00_release_firmware();
2742         kmem_cache_destroy(srb_cachep);
2743         fc_release_transport(qla2xxx_transport_template);
2744 }
2745
2746 module_init(qla2x00_module_init);
2747 module_exit(qla2x00_module_exit);
2748
2749 MODULE_AUTHOR("QLogic Corporation");
2750 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2751 MODULE_LICENSE("GPL");
2752 MODULE_VERSION(QLA2XXX_VERSION);
2753 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2754 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2755 MODULE_FIRMWARE(FW_FILE_ISP2300);
2756 MODULE_FIRMWARE(FW_FILE_ISP2322);
2757 MODULE_FIRMWARE(FW_FILE_ISP24XX);