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 static 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 static 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 static 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 static 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 static 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 static 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         char pci_info[20];
1381         char fw_str[30];
1382         struct scsi_host_template *sht;
1383
1384         if (pci_enable_device(pdev))
1385                 goto probe_out;
1386
1387         sht = &qla2x00_driver_template;
1388         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1389             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1390                 sht = &qla24xx_driver_template;
1391         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1392         if (host == NULL) {
1393                 printk(KERN_WARNING
1394                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1395                 goto probe_disable_device;
1396         }
1397
1398         /* Clear our data area */
1399         ha = (scsi_qla_host_t *)host->hostdata;
1400         memset(ha, 0, sizeof(scsi_qla_host_t));
1401
1402         ha->pdev = pdev;
1403         ha->host = host;
1404         ha->host_no = host->host_no;
1405         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1406
1407         /* Set ISP-type information. */
1408         qla2x00_set_isp_flags(ha);
1409
1410         /* Configure PCI I/O space */
1411         ret = qla2x00_iospace_config(ha);
1412         if (ret)
1413                 goto probe_failed;
1414
1415         qla_printk(KERN_INFO, ha,
1416             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1417             ha->iobase);
1418
1419         spin_lock_init(&ha->hardware_lock);
1420
1421         ha->prev_topology = 0;
1422         ha->init_cb_size = sizeof(init_cb_t);
1423         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1424         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1425         ha->optrom_size = OPTROM_SIZE_2300;
1426
1427         ha->max_q_depth = MAX_Q_DEPTH;
1428         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1429                 ha->max_q_depth = ql2xmaxqdepth;
1430
1431         /* Assign ISP specific operations. */
1432         ha->isp_ops.pci_config          = qla2100_pci_config;
1433         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1434         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1435         ha->isp_ops.config_rings        = qla2x00_config_rings;
1436         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1437         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1438         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1439         ha->isp_ops.load_risc           = qla2x00_load_risc;
1440         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1441         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1442         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1443         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1444         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1445         ha->isp_ops.abort_command       = qla2x00_abort_command;
1446         ha->isp_ops.abort_target        = qla2x00_abort_target;
1447         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1448         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1449         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1450         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1451         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1452         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1453         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1454         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1455         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1456         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1457         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1458         if (IS_QLA2100(ha)) {
1459                 host->max_id = MAX_TARGETS_2100;
1460                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1461                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1462                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1463                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1464                 host->sg_tablesize = 32;
1465                 ha->gid_list_info_size = 4;
1466         } else if (IS_QLA2200(ha)) {
1467                 host->max_id = MAX_TARGETS_2200;
1468                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1469                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1470                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1471                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1472                 ha->gid_list_info_size = 4;
1473         } else if (IS_QLA23XX(ha)) {
1474                 host->max_id = MAX_TARGETS_2200;
1475                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1476                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1477                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1478                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1479                 ha->isp_ops.pci_config = qla2300_pci_config;
1480                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1481                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1482                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1483                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1484                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1485                 ha->gid_list_info_size = 6;
1486                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1487                         ha->optrom_size = OPTROM_SIZE_2322;
1488         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1489                 host->max_id = MAX_TARGETS_2200;
1490                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1491                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1492                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1493                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1494                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1495                 ha->mgmt_svr_loop_id = 10;
1496                 ha->isp_ops.pci_config = qla24xx_pci_config;
1497                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1498                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1499                 ha->isp_ops.config_rings = qla24xx_config_rings;
1500                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1501                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1502                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1503                 ha->isp_ops.load_risc = qla24xx_load_risc;
1504                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1505                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1506                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1507                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1508                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1509                 ha->isp_ops.abort_command = qla24xx_abort_command;
1510                 ha->isp_ops.abort_target = qla24xx_abort_target;
1511                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1512                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1513                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1514                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1515                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1516                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1517                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1518                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1519                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1520                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1521                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1522                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1523                 ha->gid_list_info_size = 8;
1524                 ha->optrom_size = OPTROM_SIZE_24XX;
1525         }
1526         host->can_queue = ha->request_q_length + 128;
1527
1528         /* load the F/W, read paramaters, and init the H/W */
1529         ha->instance = num_hosts;
1530
1531         init_MUTEX(&ha->mbx_cmd_sem);
1532         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1533
1534         INIT_LIST_HEAD(&ha->list);
1535         INIT_LIST_HEAD(&ha->fcports);
1536
1537         /*
1538          * These locks are used to prevent more than one CPU
1539          * from modifying the queue at the same time. The
1540          * higher level "host_lock" will reduce most
1541          * contention for these locks.
1542          */
1543         spin_lock_init(&ha->mbx_reg_lock);
1544
1545         qla2x00_config_dma_addressing(ha);
1546         if (qla2x00_mem_alloc(ha)) {
1547                 qla_printk(KERN_WARNING, ha,
1548                     "[ERROR] Failed to allocate memory for adapter\n");
1549
1550                 ret = -ENOMEM;
1551                 goto probe_failed;
1552         }
1553
1554         if (qla2x00_initialize_adapter(ha) &&
1555             !(ha->device_flags & DFLG_NO_CABLE)) {
1556
1557                 qla_printk(KERN_WARNING, ha,
1558                     "Failed to initialize adapter\n");
1559
1560                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1561                     "Adapter flags %x.\n",
1562                     ha->host_no, ha->device_flags));
1563
1564                 ret = -ENODEV;
1565                 goto probe_failed;
1566         }
1567
1568         /*
1569          * Startup the kernel thread for this host adapter
1570          */
1571         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1572                         "%s_dpc", ha->host_str);
1573         if (IS_ERR(ha->dpc_thread)) {
1574                 qla_printk(KERN_WARNING, ha,
1575                     "Unable to start DPC thread!\n");
1576                 ret = PTR_ERR(ha->dpc_thread);
1577                 goto probe_failed;
1578         }
1579
1580         host->this_id = 255;
1581         host->cmd_per_lun = 3;
1582         host->unique_id = ha->instance;
1583         host->max_cmd_len = MAX_CMDSZ;
1584         host->max_channel = MAX_BUSES - 1;
1585         host->max_lun = MAX_LUNS;
1586         host->transportt = qla2xxx_transport_template;
1587
1588         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1589             IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1590         if (ret) {
1591                 qla_printk(KERN_WARNING, ha,
1592                     "Failed to reserve interrupt %d already in use.\n",
1593                     pdev->irq);
1594                 goto probe_failed;
1595         }
1596         host->irq = pdev->irq;
1597
1598         /* Initialized the timer */
1599         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1600
1601         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1602             ha->host_no, ha));
1603
1604         ha->isp_ops.disable_intrs(ha);
1605
1606         spin_lock_irqsave(&ha->hardware_lock, flags);
1607         reg = ha->iobase;
1608         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1609                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1610                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1611         } else {
1612                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1613                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1614                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1615
1616                 /* Enable proper parity */
1617                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1618                         if (IS_QLA2300(ha))
1619                                 /* SRAM parity */
1620                                 WRT_REG_WORD(&reg->isp.hccr,
1621                                     (HCCR_ENABLE_PARITY + 0x1));
1622                         else
1623                                 /* SRAM, Instruction RAM and GP RAM parity */
1624                                 WRT_REG_WORD(&reg->isp.hccr,
1625                                     (HCCR_ENABLE_PARITY + 0x7));
1626                 }
1627         }
1628         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1629
1630         ha->isp_ops.enable_intrs(ha);
1631
1632         pci_set_drvdata(pdev, ha);
1633
1634         /* Start link scan. */
1635         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1636         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1637         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1638         ha->flags.init_done = 1;
1639         ha->flags.online = 1;
1640
1641         num_hosts++;
1642
1643         ret = scsi_add_host(host, &pdev->dev);
1644         if (ret)
1645                 goto probe_failed;
1646
1647         qla2x00_alloc_sysfs_attr(ha);
1648
1649         qla2x00_init_host_attr(ha);
1650
1651         qla_printk(KERN_INFO, ha, "\n"
1652             " QLogic Fibre Channel HBA Driver: %s\n"
1653             "  QLogic %s - %s\n"
1654             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1655             qla2x00_version_str, ha->model_number,
1656             ha->model_desc ? ha->model_desc: "", pdev->device,
1657             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1658             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1659             ha->isp_ops.fw_version_str(ha, fw_str));
1660
1661         return 0;
1662
1663 probe_failed:
1664         qla2x00_free_device(ha);
1665
1666         scsi_host_put(host);
1667
1668 probe_disable_device:
1669         pci_disable_device(pdev);
1670
1671 probe_out:
1672         return ret;
1673 }
1674
1675 static void __devexit
1676 qla2x00_remove_one(struct pci_dev *pdev)
1677 {
1678         scsi_qla_host_t *ha;
1679
1680         ha = pci_get_drvdata(pdev);
1681
1682         qla2x00_free_sysfs_attr(ha);
1683
1684         fc_remove_host(ha->host);
1685
1686         scsi_remove_host(ha->host);
1687
1688         qla2x00_free_device(ha);
1689
1690         scsi_host_put(ha->host);
1691
1692         pci_set_drvdata(pdev, NULL);
1693 }
1694
1695 static void
1696 qla2x00_free_device(scsi_qla_host_t *ha)
1697 {
1698         /* Disable timer */
1699         if (ha->timer_active)
1700                 qla2x00_stop_timer(ha);
1701
1702         /* Kill the kernel thread for this host */
1703         if (ha->dpc_thread) {
1704                 struct task_struct *t = ha->dpc_thread;
1705
1706                 /*
1707                  * qla2xxx_wake_dpc checks for ->dpc_thread
1708                  * so we need to zero it out.
1709                  */
1710                 ha->dpc_thread = NULL;
1711                 kthread_stop(t);
1712         }
1713
1714         if (ha->eft)
1715                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1716
1717         ha->flags.online = 0;
1718
1719         /* Stop currently executing firmware. */
1720         qla2x00_try_to_stop_firmware(ha);
1721
1722         /* turn-off interrupts on the card */
1723         if (ha->interrupts_on)
1724                 ha->isp_ops.disable_intrs(ha);
1725
1726         qla2x00_mem_free(ha);
1727
1728         /* Detach interrupts */
1729         if (ha->host->irq)
1730                 free_irq(ha->host->irq, ha);
1731
1732         /* release io space registers  */
1733         if (ha->iobase)
1734                 iounmap(ha->iobase);
1735         pci_release_regions(ha->pdev);
1736
1737         pci_disable_device(ha->pdev);
1738 }
1739
1740 static inline void
1741 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1742     int defer)
1743 {
1744         unsigned long flags;
1745         struct fc_rport *rport;
1746
1747         if (!fcport->rport)
1748                 return;
1749
1750         rport = fcport->rport;
1751         if (defer) {
1752                 spin_lock_irqsave(&fcport->rport_lock, flags);
1753                 fcport->drport = rport;
1754                 fcport->rport = NULL;
1755                 *(fc_port_t **)rport->dd_data = NULL;
1756                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1757                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1758         } else {
1759                 spin_lock_irqsave(&fcport->rport_lock, flags);
1760                 fcport->rport = NULL;
1761                 *(fc_port_t **)rport->dd_data = NULL;
1762                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1763                 fc_remote_port_delete(rport);
1764         }
1765 }
1766
1767 /*
1768  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1769  *
1770  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1771  *
1772  * Return: None.
1773  *
1774  * Context:
1775  */
1776 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1777     int do_login, int defer)
1778 {
1779         if (atomic_read(&fcport->state) == FCS_ONLINE)
1780                 qla2x00_schedule_rport_del(ha, fcport, defer);
1781
1782         /*
1783          * We may need to retry the login, so don't change the state of the
1784          * port but do the retries.
1785          */
1786         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1787                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1788
1789         if (!do_login)
1790                 return;
1791
1792         if (fcport->login_retry == 0) {
1793                 fcport->login_retry = ha->login_retry_count;
1794                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1795
1796                 DEBUG(printk("scsi(%ld): Port login retry: "
1797                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1798                     "id = 0x%04x retry cnt=%d\n",
1799                     ha->host_no,
1800                     fcport->port_name[0],
1801                     fcport->port_name[1],
1802                     fcport->port_name[2],
1803                     fcport->port_name[3],
1804                     fcport->port_name[4],
1805                     fcport->port_name[5],
1806                     fcport->port_name[6],
1807                     fcport->port_name[7],
1808                     fcport->loop_id,
1809                     fcport->login_retry));
1810         }
1811 }
1812
1813 /*
1814  * qla2x00_mark_all_devices_lost
1815  *      Updates fcport state when device goes offline.
1816  *
1817  * Input:
1818  *      ha = adapter block pointer.
1819  *      fcport = port structure pointer.
1820  *
1821  * Return:
1822  *      None.
1823  *
1824  * Context:
1825  */
1826 void
1827 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1828 {
1829         fc_port_t *fcport;
1830
1831         list_for_each_entry(fcport, &ha->fcports, list) {
1832                 if (fcport->port_type != FCT_TARGET)
1833                         continue;
1834
1835                 /*
1836                  * No point in marking the device as lost, if the device is
1837                  * already DEAD.
1838                  */
1839                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1840                         continue;
1841                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1842                         qla2x00_schedule_rport_del(ha, fcport, defer);
1843                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1844         }
1845
1846         if (defer)
1847                 qla2xxx_wake_dpc(ha);
1848 }
1849
1850 /*
1851 * qla2x00_mem_alloc
1852 *      Allocates adapter memory.
1853 *
1854 * Returns:
1855 *      0  = success.
1856 *      1  = failure.
1857 */
1858 static uint8_t
1859 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1860 {
1861         char    name[16];
1862         uint8_t   status = 1;
1863         int     retry= 10;
1864
1865         do {
1866                 /*
1867                  * This will loop only once if everything goes well, else some
1868                  * number of retries will be performed to get around a kernel
1869                  * bug where available mem is not allocated until after a
1870                  * little delay and a retry.
1871                  */
1872                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1873                     (ha->request_q_length + 1) * sizeof(request_t),
1874                     &ha->request_dma, GFP_KERNEL);
1875                 if (ha->request_ring == NULL) {
1876                         qla_printk(KERN_WARNING, ha,
1877                             "Memory Allocation failed - request_ring\n");
1878
1879                         qla2x00_mem_free(ha);
1880                         msleep(100);
1881
1882                         continue;
1883                 }
1884
1885                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1886                     (ha->response_q_length + 1) * sizeof(response_t),
1887                     &ha->response_dma, GFP_KERNEL);
1888                 if (ha->response_ring == NULL) {
1889                         qla_printk(KERN_WARNING, ha,
1890                             "Memory Allocation failed - response_ring\n");
1891
1892                         qla2x00_mem_free(ha);
1893                         msleep(100);
1894
1895                         continue;
1896                 }
1897
1898                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1899                     &ha->gid_list_dma, GFP_KERNEL);
1900                 if (ha->gid_list == NULL) {
1901                         qla_printk(KERN_WARNING, ha,
1902                             "Memory Allocation failed - gid_list\n");
1903
1904                         qla2x00_mem_free(ha);
1905                         msleep(100);
1906
1907                         continue;
1908                 }
1909
1910                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1911                     ha->host_no);
1912                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1913                     DMA_POOL_SIZE, 8, 0);
1914                 if (ha->s_dma_pool == NULL) {
1915                         qla_printk(KERN_WARNING, ha,
1916                             "Memory Allocation failed - s_dma_pool\n");
1917
1918                         qla2x00_mem_free(ha);
1919                         msleep(100);
1920
1921                         continue;
1922                 }
1923
1924                 /* get consistent memory allocated for init control block */
1925                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1926                     &ha->init_cb_dma);
1927                 if (ha->init_cb == NULL) {
1928                         qla_printk(KERN_WARNING, ha,
1929                             "Memory Allocation failed - init_cb\n");
1930
1931                         qla2x00_mem_free(ha);
1932                         msleep(100);
1933
1934                         continue;
1935                 }
1936                 memset(ha->init_cb, 0, ha->init_cb_size);
1937
1938                 if (qla2x00_allocate_sp_pool(ha)) {
1939                         qla_printk(KERN_WARNING, ha,
1940                             "Memory Allocation failed - "
1941                             "qla2x00_allocate_sp_pool()\n");
1942
1943                         qla2x00_mem_free(ha);
1944                         msleep(100);
1945
1946                         continue;
1947                 }
1948
1949                 /* Allocate memory for SNS commands */
1950                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1951                         /* Get consistent memory allocated for SNS commands */
1952                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1953                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1954                             GFP_KERNEL);
1955                         if (ha->sns_cmd == NULL) {
1956                                 /* error */
1957                                 qla_printk(KERN_WARNING, ha,
1958                                     "Memory Allocation failed - sns_cmd\n");
1959
1960                                 qla2x00_mem_free(ha);
1961                                 msleep(100);
1962
1963                                 continue;
1964                         }
1965                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1966                 } else {
1967                         /* Get consistent memory allocated for MS IOCB */
1968                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1969                             &ha->ms_iocb_dma);
1970                         if (ha->ms_iocb == NULL) {
1971                                 /* error */
1972                                 qla_printk(KERN_WARNING, ha,
1973                                     "Memory Allocation failed - ms_iocb\n");
1974
1975                                 qla2x00_mem_free(ha);
1976                                 msleep(100);
1977
1978                                 continue;
1979                         }
1980                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1981
1982                         /*
1983                          * Get consistent memory allocated for CT SNS
1984                          * commands
1985                          */
1986                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1987                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1988                             GFP_KERNEL);
1989                         if (ha->ct_sns == NULL) {
1990                                 /* error */
1991                                 qla_printk(KERN_WARNING, ha,
1992                                     "Memory Allocation failed - ct_sns\n");
1993
1994                                 qla2x00_mem_free(ha);
1995                                 msleep(100);
1996
1997                                 continue;
1998                         }
1999                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2000
2001                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2002                                 /*
2003                                  * Get consistent memory allocated for SFP
2004                                  * block.
2005                                  */
2006                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2007                                     GFP_KERNEL, &ha->sfp_data_dma);
2008                                 if (ha->sfp_data == NULL) {
2009                                         qla_printk(KERN_WARNING, ha,
2010                                             "Memory Allocation failed - "
2011                                             "sfp_data\n");
2012
2013                                         qla2x00_mem_free(ha);
2014                                         msleep(100);
2015
2016                                         continue;
2017                                 }
2018                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2019                         }
2020                 }
2021
2022                 /* Done all allocations without any error. */
2023                 status = 0;
2024
2025         } while (retry-- && status != 0);
2026
2027         if (status) {
2028                 printk(KERN_WARNING
2029                         "%s(): **** FAILED ****\n", __func__);
2030         }
2031
2032         return(status);
2033 }
2034
2035 /*
2036 * qla2x00_mem_free
2037 *      Frees all adapter allocated memory.
2038 *
2039 * Input:
2040 *      ha = adapter block pointer.
2041 */
2042 static void
2043 qla2x00_mem_free(scsi_qla_host_t *ha)
2044 {
2045         struct list_head        *fcpl, *fcptemp;
2046         fc_port_t       *fcport;
2047
2048         if (ha == NULL) {
2049                 /* error */
2050                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2051                 return;
2052         }
2053
2054         /* free sp pool */
2055         qla2x00_free_sp_pool(ha);
2056
2057         if (ha->fw_dump) {
2058                 if (ha->eft)
2059                         dma_free_coherent(&ha->pdev->dev,
2060                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2061                 vfree(ha->fw_dump);
2062         }
2063
2064         if (ha->sns_cmd)
2065                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2066                     ha->sns_cmd, ha->sns_cmd_dma);
2067
2068         if (ha->ct_sns)
2069                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2070                     ha->ct_sns, ha->ct_sns_dma);
2071
2072         if (ha->sfp_data)
2073                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2074
2075         if (ha->ms_iocb)
2076                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2077
2078         if (ha->init_cb)
2079                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2080
2081         if (ha->s_dma_pool)
2082                 dma_pool_destroy(ha->s_dma_pool);
2083
2084         if (ha->gid_list)
2085                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2086                     ha->gid_list_dma);
2087
2088         if (ha->response_ring)
2089                 dma_free_coherent(&ha->pdev->dev,
2090                     (ha->response_q_length + 1) * sizeof(response_t),
2091                     ha->response_ring, ha->response_dma);
2092
2093         if (ha->request_ring)
2094                 dma_free_coherent(&ha->pdev->dev,
2095                     (ha->request_q_length + 1) * sizeof(request_t),
2096                     ha->request_ring, ha->request_dma);
2097
2098         ha->eft = NULL;
2099         ha->eft_dma = 0;
2100         ha->sns_cmd = NULL;
2101         ha->sns_cmd_dma = 0;
2102         ha->ct_sns = NULL;
2103         ha->ct_sns_dma = 0;
2104         ha->ms_iocb = NULL;
2105         ha->ms_iocb_dma = 0;
2106         ha->init_cb = NULL;
2107         ha->init_cb_dma = 0;
2108
2109         ha->s_dma_pool = NULL;
2110
2111         ha->gid_list = NULL;
2112         ha->gid_list_dma = 0;
2113
2114         ha->response_ring = NULL;
2115         ha->response_dma = 0;
2116         ha->request_ring = NULL;
2117         ha->request_dma = 0;
2118
2119         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2120                 fcport = list_entry(fcpl, fc_port_t, list);
2121
2122                 /* fc ports */
2123                 list_del_init(&fcport->list);
2124                 kfree(fcport);
2125         }
2126         INIT_LIST_HEAD(&ha->fcports);
2127
2128         ha->fw_dump = NULL;
2129         ha->fw_dumped = 0;
2130         ha->fw_dump_reading = 0;
2131
2132         vfree(ha->optrom_buffer);
2133 }
2134
2135 /*
2136  * qla2x00_allocate_sp_pool
2137  *       This routine is called during initialization to allocate
2138  *       memory for local srb_t.
2139  *
2140  * Input:
2141  *       ha   = adapter block pointer.
2142  *
2143  * Context:
2144  *      Kernel context.
2145  */
2146 static int
2147 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2148 {
2149         int      rval;
2150
2151         rval = QLA_SUCCESS;
2152         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2153         if (ha->srb_mempool == NULL) {
2154                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2155                 rval = QLA_FUNCTION_FAILED;
2156         }
2157         return (rval);
2158 }
2159
2160 /*
2161  *  This routine frees all adapter allocated memory.
2162  *
2163  */
2164 static void
2165 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2166 {
2167         if (ha->srb_mempool) {
2168                 mempool_destroy(ha->srb_mempool);
2169                 ha->srb_mempool = NULL;
2170         }
2171 }
2172
2173 /**************************************************************************
2174 * qla2x00_do_dpc
2175 *   This kernel thread is a task that is schedule by the interrupt handler
2176 *   to perform the background processing for interrupts.
2177 *
2178 * Notes:
2179 * This task always run in the context of a kernel thread.  It
2180 * is kick-off by the driver's detect code and starts up
2181 * up one per adapter. It immediately goes to sleep and waits for
2182 * some fibre event.  When either the interrupt handler or
2183 * the timer routine detects a event it will one of the task
2184 * bits then wake us up.
2185 **************************************************************************/
2186 static int
2187 qla2x00_do_dpc(void *data)
2188 {
2189         scsi_qla_host_t *ha;
2190         fc_port_t       *fcport;
2191         uint8_t         status;
2192         uint16_t        next_loopid;
2193
2194         ha = (scsi_qla_host_t *)data;
2195
2196         set_user_nice(current, -20);
2197
2198         while (!kthread_should_stop()) {
2199                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2200
2201                 set_current_state(TASK_INTERRUPTIBLE);
2202                 schedule();
2203                 __set_current_state(TASK_RUNNING);
2204
2205                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2206
2207                 /* Initialization not yet finished. Don't do anything yet. */
2208                 if (!ha->flags.init_done)
2209                         continue;
2210
2211                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2212
2213                 ha->dpc_active = 1;
2214
2215                 if (ha->flags.mbox_busy) {
2216                         ha->dpc_active = 0;
2217                         continue;
2218                 }
2219
2220                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2221
2222                         DEBUG(printk("scsi(%ld): dpc: sched "
2223                             "qla2x00_abort_isp ha = %p\n",
2224                             ha->host_no, ha));
2225                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2226                             &ha->dpc_flags))) {
2227
2228                                 if (qla2x00_abort_isp(ha)) {
2229                                         /* failed. retry later */
2230                                         set_bit(ISP_ABORT_NEEDED,
2231                                             &ha->dpc_flags);
2232                                 }
2233                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2234                         }
2235                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2236                             ha->host_no));
2237                 }
2238
2239                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2240                         qla2x00_update_fcports(ha);
2241
2242                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2243                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2244                             ha->host_no));
2245                         qla2x00_loop_reset(ha);
2246                 }
2247
2248                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2249                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2250
2251                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2252                             ha->host_no));
2253
2254                         qla2x00_rst_aen(ha);
2255                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2256                 }
2257
2258                 /* Retry each device up to login retry count */
2259                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2260                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2261                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2262
2263                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2264                             ha->host_no));
2265
2266                         next_loopid = 0;
2267                         list_for_each_entry(fcport, &ha->fcports, list) {
2268                                 /*
2269                                  * If the port is not ONLINE then try to login
2270                                  * to it if we haven't run out of retries.
2271                                  */
2272                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2273                                     fcport->login_retry) {
2274
2275                                         fcport->login_retry--;
2276                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2277                                                 if (fcport->flags &
2278                                                     FCF_TAPE_PRESENT)
2279                                                         ha->isp_ops.fabric_logout(
2280                                                             ha, fcport->loop_id,
2281                                                             fcport->d_id.b.domain,
2282                                                             fcport->d_id.b.area,
2283                                                             fcport->d_id.b.al_pa);
2284                                                 status = qla2x00_fabric_login(
2285                                                     ha, fcport, &next_loopid);
2286                                         } else
2287                                                 status =
2288                                                     qla2x00_local_device_login(
2289                                                         ha, fcport);
2290
2291                                         if (status == QLA_SUCCESS) {
2292                                                 fcport->old_loop_id = fcport->loop_id;
2293
2294                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2295                                                     ha->host_no, fcport->loop_id));
2296
2297                                                 qla2x00_update_fcport(ha,
2298                                                     fcport);
2299                                         } else if (status == 1) {
2300                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2301                                                 /* retry the login again */
2302                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2303                                                     ha->host_no,
2304                                                     fcport->login_retry, fcport->loop_id));
2305                                         } else {
2306                                                 fcport->login_retry = 0;
2307                                         }
2308                                 }
2309                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2310                                         break;
2311                         }
2312                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2313                             ha->host_no));
2314                 }
2315
2316                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2317                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2318
2319                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2320                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2321                             ha->host_no));
2322
2323                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2324
2325                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2326                             ha->host_no));
2327                 }
2328
2329                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2330
2331                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2332                             ha->host_no));
2333
2334                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2335                             &ha->dpc_flags))) {
2336
2337                                 qla2x00_loop_resync(ha);
2338
2339                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2340                         }
2341
2342                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2343                             ha->host_no));
2344                 }
2345
2346                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2347
2348                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2349                             ha->host_no));
2350
2351                         qla2x00_rescan_fcports(ha);
2352
2353                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2354                             "end.\n",
2355                             ha->host_no));
2356                 }
2357
2358                 if (!ha->interrupts_on)
2359                         ha->isp_ops.enable_intrs(ha);
2360
2361                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2362                         ha->isp_ops.beacon_blink(ha);
2363
2364                 ha->dpc_active = 0;
2365         } /* End of while(1) */
2366
2367         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2368
2369         /*
2370          * Make sure that nobody tries to wake us up again.
2371          */
2372         ha->dpc_active = 0;
2373
2374         return 0;
2375 }
2376
2377 void
2378 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2379 {
2380         if (ha->dpc_thread)
2381                 wake_up_process(ha->dpc_thread);
2382 }
2383
2384 /*
2385 *  qla2x00_rst_aen
2386 *      Processes asynchronous reset.
2387 *
2388 * Input:
2389 *      ha  = adapter block pointer.
2390 */
2391 static void
2392 qla2x00_rst_aen(scsi_qla_host_t *ha)
2393 {
2394         if (ha->flags.online && !ha->flags.reset_active &&
2395             !atomic_read(&ha->loop_down_timer) &&
2396             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2397                 do {
2398                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2399
2400                         /*
2401                          * Issue marker command only when we are going to start
2402                          * the I/O.
2403                          */
2404                         ha->marker_needed = 1;
2405                 } while (!atomic_read(&ha->loop_down_timer) &&
2406                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2407         }
2408 }
2409
2410 static void
2411 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2412 {
2413         struct scsi_cmnd *cmd = sp->cmd;
2414
2415         if (sp->flags & SRB_DMA_VALID) {
2416                 if (cmd->use_sg) {
2417                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2418                             cmd->use_sg, cmd->sc_data_direction);
2419                 } else if (cmd->request_bufflen) {
2420                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2421                             cmd->request_bufflen, cmd->sc_data_direction);
2422                 }
2423                 sp->flags &= ~SRB_DMA_VALID;
2424         }
2425         CMD_SP(cmd) = NULL;
2426 }
2427
2428 void
2429 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2430 {
2431         struct scsi_cmnd *cmd = sp->cmd;
2432
2433         qla2x00_sp_free_dma(ha, sp);
2434
2435         mempool_free(sp, ha->srb_mempool);
2436
2437         cmd->scsi_done(cmd);
2438 }
2439
2440 /**************************************************************************
2441 *   qla2x00_timer
2442 *
2443 * Description:
2444 *   One second timer
2445 *
2446 * Context: Interrupt
2447 ***************************************************************************/
2448 static void
2449 qla2x00_timer(scsi_qla_host_t *ha)
2450 {
2451         unsigned long   cpu_flags = 0;
2452         fc_port_t       *fcport;
2453         int             start_dpc = 0;
2454         int             index;
2455         srb_t           *sp;
2456         int             t;
2457
2458         /*
2459          * Ports - Port down timer.
2460          *
2461          * Whenever, a port is in the LOST state we start decrementing its port
2462          * down timer every second until it reaches zero. Once  it reaches zero
2463          * the port it marked DEAD.
2464          */
2465         t = 0;
2466         list_for_each_entry(fcport, &ha->fcports, list) {
2467                 if (fcport->port_type != FCT_TARGET)
2468                         continue;
2469
2470                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2471
2472                         if (atomic_read(&fcport->port_down_timer) == 0)
2473                                 continue;
2474
2475                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2476                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2477
2478                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2479                             "%d remaining\n",
2480                             ha->host_no,
2481                             t, atomic_read(&fcport->port_down_timer)));
2482                 }
2483                 t++;
2484         } /* End of for fcport  */
2485
2486
2487         /* Loop down handler. */
2488         if (atomic_read(&ha->loop_down_timer) > 0 &&
2489             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2490
2491                 if (atomic_read(&ha->loop_down_timer) ==
2492                     ha->loop_down_abort_time) {
2493
2494                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2495                             "queues before time expire\n",
2496                             ha->host_no));
2497
2498                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2499                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2500
2501                         /* Schedule an ISP abort to return any tape commands. */
2502                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2503                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2504                             index++) {
2505                                 fc_port_t *sfcp;
2506
2507                                 sp = ha->outstanding_cmds[index];
2508                                 if (!sp)
2509                                         continue;
2510                                 sfcp = sp->fcport;
2511                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2512                                         continue;
2513
2514                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2515                                 break;
2516                         }
2517                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2518
2519                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2520                         start_dpc++;
2521                 }
2522
2523                 /* if the loop has been down for 4 minutes, reinit adapter */
2524                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2525                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2526                             "restarting queues.\n",
2527                             ha->host_no));
2528
2529                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2530                         start_dpc++;
2531
2532                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2533                                 DEBUG(printk("scsi(%ld): Loop down - "
2534                                     "aborting ISP.\n",
2535                                     ha->host_no));
2536                                 qla_printk(KERN_WARNING, ha,
2537                                     "Loop down - aborting ISP.\n");
2538
2539                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2540                         }
2541                 }
2542                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2543                     ha->host_no,
2544                     atomic_read(&ha->loop_down_timer)));
2545         }
2546
2547         /* Check if beacon LED needs to be blinked */
2548         if (ha->beacon_blink_led == 1) {
2549                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2550                 start_dpc++;
2551         }
2552
2553         /* Schedule the DPC routine if needed */
2554         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2555             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2556             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2557             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2558             start_dpc ||
2559             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2560             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2561             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2562             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2563                 qla2xxx_wake_dpc(ha);
2564
2565         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2566 }
2567
2568 /* XXX(hch): crude hack to emulate a down_timeout() */
2569 int
2570 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2571 {
2572         const unsigned int step = 100; /* msecs */
2573         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2574
2575         do {
2576                 if (!down_trylock(sema))
2577                         return 0;
2578                 if (msleep_interruptible(step))
2579                         break;
2580         } while (--iterations >= 0);
2581
2582         return -ETIMEDOUT;
2583 }
2584
2585 /* Firmware interface routines. */
2586
2587 #define FW_BLOBS        5
2588 #define FW_ISP21XX      0
2589 #define FW_ISP22XX      1
2590 #define FW_ISP2300      2
2591 #define FW_ISP2322      3
2592 #define FW_ISP24XX      4
2593
2594 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2595 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2596 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2597 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2598 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2599
2600 static DECLARE_MUTEX(qla_fw_lock);
2601
2602 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2603         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2604         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2605         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2606         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2607         { .name = FW_FILE_ISP24XX, },
2608 };
2609
2610 struct fw_blob *
2611 qla2x00_request_firmware(scsi_qla_host_t *ha)
2612 {
2613         struct fw_blob *blob;
2614
2615         blob = NULL;
2616         if (IS_QLA2100(ha)) {
2617                 blob = &qla_fw_blobs[FW_ISP21XX];
2618         } else if (IS_QLA2200(ha)) {
2619                 blob = &qla_fw_blobs[FW_ISP22XX];
2620         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2621                 blob = &qla_fw_blobs[FW_ISP2300];
2622         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2623                 blob = &qla_fw_blobs[FW_ISP2322];
2624         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2625                 blob = &qla_fw_blobs[FW_ISP24XX];
2626         }
2627
2628         down(&qla_fw_lock);
2629         if (blob->fw)
2630                 goto out;
2631
2632         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2633                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2634                     "(%s).\n", ha->host_no, blob->name));
2635                 blob->fw = NULL;
2636                 blob = NULL;
2637                 goto out;
2638         }
2639
2640 out:
2641         up(&qla_fw_lock);
2642         return blob;
2643 }
2644
2645 static void
2646 qla2x00_release_firmware(void)
2647 {
2648         int idx;
2649
2650         down(&qla_fw_lock);
2651         for (idx = 0; idx < FW_BLOBS; idx++)
2652                 if (qla_fw_blobs[idx].fw)
2653                         release_firmware(qla_fw_blobs[idx].fw);
2654         up(&qla_fw_lock);
2655 }
2656
2657 static struct pci_device_id qla2xxx_pci_tbl[] = {
2658         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2659         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2660         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2661         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2662         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2663         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2664         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2665         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2666         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2667         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2668         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2669         { 0 },
2670 };
2671 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2672
2673 static struct pci_driver qla2xxx_pci_driver = {
2674         .name           = QLA2XXX_DRIVER_NAME,
2675         .driver         = {
2676                 .owner          = THIS_MODULE,
2677         },
2678         .id_table       = qla2xxx_pci_tbl,
2679         .probe          = qla2x00_probe_one,
2680         .remove         = __devexit_p(qla2x00_remove_one),
2681 };
2682
2683 /**
2684  * qla2x00_module_init - Module initialization.
2685  **/
2686 static int __init
2687 qla2x00_module_init(void)
2688 {
2689         int ret = 0;
2690
2691         /* Allocate cache for SRBs. */
2692         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2693             SLAB_HWCACHE_ALIGN, NULL, NULL);
2694         if (srb_cachep == NULL) {
2695                 printk(KERN_ERR
2696                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2697                 return -ENOMEM;
2698         }
2699
2700         /* Derive version string. */
2701         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2702         if (ql2xextended_error_logging)
2703                 strcat(qla2x00_version_str, "-debug");
2704
2705         qla2xxx_transport_template =
2706             fc_attach_transport(&qla2xxx_transport_functions);
2707         if (!qla2xxx_transport_template)
2708                 return -ENODEV;
2709
2710         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2711         ret = pci_register_driver(&qla2xxx_pci_driver);
2712         if (ret) {
2713                 kmem_cache_destroy(srb_cachep);
2714                 fc_release_transport(qla2xxx_transport_template);
2715         }
2716         return ret;
2717 }
2718
2719 /**
2720  * qla2x00_module_exit - Module cleanup.
2721  **/
2722 static void __exit
2723 qla2x00_module_exit(void)
2724 {
2725         pci_unregister_driver(&qla2xxx_pci_driver);
2726         qla2x00_release_firmware();
2727         kmem_cache_destroy(srb_cachep);
2728         fc_release_transport(qla2xxx_transport_template);
2729 }
2730
2731 module_init(qla2x00_module_init);
2732 module_exit(qla2x00_module_exit);
2733
2734 MODULE_AUTHOR("QLogic Corporation");
2735 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2736 MODULE_LICENSE("GPL");
2737 MODULE_VERSION(QLA2XXX_VERSION);
2738 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2739 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2740 MODULE_FIRMWARE(FW_FILE_ISP2300);
2741 MODULE_FIRMWARE(FW_FILE_ISP2322);
2742 MODULE_FIRMWARE(FW_FILE_ISP24XX);