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   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2008 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 struct kmem_cache *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 int num_hosts;
  33 int ql2xlogintimeout = 20;
  34 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  35 MODULE_PARM_DESC(ql2xlogintimeout,
  36                 "Login timeout value in seconds.");
  37
  38 int qlport_down_retry;
  39 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  40 MODULE_PARM_DESC(qlport_down_retry,
  41                 "Maximum number of command retries to a port that returns "
  42                 "a PORT-DOWN status.");
  43
  44 int ql2xplogiabsentdevice;
  45 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  46 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  47                 "Option to enable PLOGI to devices that are not present after "
  48                 "a Fabric scan.  This is needed for several broken switches. "
  49                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  50
  51 int ql2xloginretrycount = 0;
  52 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  53 MODULE_PARM_DESC(ql2xloginretrycount,
  54                 "Specify an alternate value for the NVRAM login retry count.");
  55
  56 int ql2xallocfwdump = 1;
  57 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  58 MODULE_PARM_DESC(ql2xallocfwdump,
  59                 "Option to enable allocation of memory for a firmware dump "
  60                 "during HBA initialization.  Memory allocation requirements "
  61                 "vary by ISP type.  Default is 1 - allocate memory.");
  62
  63 int ql2xextended_error_logging;
  64 module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
  65 MODULE_PARM_DESC(ql2xextended_error_logging,
  66                 "Option to enable extended error logging, "
  67                 "Default is 0 - no logging. 1 - log errors.");
  68
  69 static void qla2x00_free_device(scsi_qla_host_t *);
  70
  71 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  72
  73 int ql2xfdmienable;
  74 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  75 MODULE_PARM_DESC(ql2xfdmienable,
  76                 "Enables FDMI registratons "
  77                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  78
  79 #define MAX_Q_DEPTH    32
  80 static int ql2xmaxqdepth = MAX_Q_DEPTH;
  81 module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  82 MODULE_PARM_DESC(ql2xmaxqdepth,
  83                 "Maximum queue depth to report for target devices.");
  84
  85 int ql2xqfullrampup = 120;
  86 module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  87 MODULE_PARM_DESC(ql2xqfullrampup,
  88                 "Number of seconds to wait to begin to ramp-up the queue "
  89                 "depth for a device after a queue-full condition has been "
  90                 "detected.  Default is 120 seconds.");
  91
  92 /*
  93  * SCSI host template entry points
  94  */
  95 static int qla2xxx_slave_configure(struct scsi_device * device);
  96 static int qla2xxx_slave_alloc(struct scsi_device *);
  97 static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
  98 static void qla2xxx_scan_start(struct Scsi_Host *);
  99 static void qla2xxx_slave_destroy(struct scsi_device *);
 100 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 101                 void (*fn)(struct scsi_cmnd *));
 102 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 103                 void (*fn)(struct scsi_cmnd *));
 104 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 105 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 106 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 107 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 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         .scan_finished          = qla2xxx_scan_finished,
 128         .scan_start             = qla2xxx_scan_start,
 129         .change_queue_depth     = qla2x00_change_queue_depth,
 130         .change_queue_type      = qla2x00_change_queue_type,
 131         .this_id                = -1,
 132         .cmd_per_lun            = 3,
 133         .use_clustering         = ENABLE_CLUSTERING,
 134         .sg_tablesize           = SG_ALL,
 135
 136         /*
 137          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 138          * which equates to 0x800000 sectors.
 139          */
 140         .max_sectors            = 0xFFFF,
 141         .shost_attrs            = qla2x00_host_attrs,
 142 };
 143
 144 struct scsi_host_template qla24xx_driver_template = {
 145         .module                 = THIS_MODULE,
 146         .name                   = QLA2XXX_DRIVER_NAME,
 147         .queuecommand           = qla24xx_queuecommand,
 148
 149         .eh_abort_handler       = qla2xxx_eh_abort,
 150         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 151         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 152         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 153
 154         .slave_configure        = qla2xxx_slave_configure,
 155
 156         .slave_alloc            = qla2xxx_slave_alloc,
 157         .slave_destroy          = qla2xxx_slave_destroy,
 158         .scan_finished          = qla2xxx_scan_finished,
 159         .scan_start             = qla2xxx_scan_start,
 160         .change_queue_depth     = qla2x00_change_queue_depth,
 161         .change_queue_type      = qla2x00_change_queue_type,
 162         .this_id                = -1,
 163         .cmd_per_lun            = 3,
 164         .use_clustering         = ENABLE_CLUSTERING,
 165         .sg_tablesize           = SG_ALL,
 166
 167         .max_sectors            = 0xFFFF,
 168         .shost_attrs            = qla2x00_host_attrs,
 169 };
 170
 171 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 172 struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
 173
 174 /* TODO Convert to inlines
 175  *
 176  * Timer routines
 177  */
 178
 179 __inline__ void
 180 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 181 {
 182         init_timer(&ha->timer);
 183         ha->timer.expires = jiffies + interval * HZ;
 184         ha->timer.data = (unsigned long)ha;
 185         ha->timer.function = (void (*)(unsigned long))func;
 186         add_timer(&ha->timer);
 187         ha->timer_active = 1;
 188 }
 189
 190 static inline void
 191 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 192 {
 193         mod_timer(&ha->timer, jiffies + interval * HZ);
 194 }
 195
 196 static __inline__ void
 197 qla2x00_stop_timer(scsi_qla_host_t *ha)
 198 {
 199         del_timer_sync(&ha->timer);
 200         ha->timer_active = 0;
 201 }
 202
 203 static int qla2x00_do_dpc(void *data);
 204
 205 static void qla2x00_rst_aen(scsi_qla_host_t *);
 206
 207 static int qla2x00_mem_alloc(scsi_qla_host_t *);
 208 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 209 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 210
 211 /* -------------------------------------------------------------------------- */
 212
 213 static char *
 214 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 215 {
 216         static char *pci_bus_modes[] = {
 217                 "33", "66", "100", "133",
 218         };
 219         uint16_t pci_bus;
 220
 221         strcpy(str, "PCI");
 222         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 223         if (pci_bus) {
 224                 strcat(str, "-X (");
 225                 strcat(str, pci_bus_modes[pci_bus]);
 226         } else {
 227                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 228                 strcat(str, " (");
 229                 strcat(str, pci_bus_modes[pci_bus]);
 230         }
 231         strcat(str, " MHz)");
 232
 233         return (str);
 234 }
 235
 236 static char *
 237 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 238 {
 239         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 240         uint32_t pci_bus;
 241         int pcie_reg;
 242
 243         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 244         if (pcie_reg) {
 245                 char lwstr[6];
 246                 uint16_t pcie_lstat, lspeed, lwidth;
 247
 248                 pcie_reg += 0x12;
 249                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 250                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 251                 lwidth = (pcie_lstat &
 252                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 253
 254                 strcpy(str, "PCIe (");
 255                 if (lspeed == 1)
 256                         strcat(str, "2.5Gb/s ");
 257                 else if (lspeed == 2)
 258                         strcat(str, "5.0Gb/s ");
 259                 else
 260                         strcat(str, "<unknown> ");
 261                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 262                 strcat(str, lwstr);
 263
 264                 return str;
 265         }
 266
 267         strcpy(str, "PCI");
 268         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 269         if (pci_bus == 0 || pci_bus == 8) {
 270                 strcat(str, " (");
 271                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 272         } else {
 273                 strcat(str, "-X ");
 274                 if (pci_bus & BIT_2)
 275                         strcat(str, "Mode 2");
 276                 else
 277                         strcat(str, "Mode 1");
 278                 strcat(str, " (");
 279                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 280         }
 281         strcat(str, " MHz)");
 282
 283         return str;
 284 }
 285
 286 static char *
 287 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 288 {
 289         char un_str[10];
 290
 291         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 292             ha->fw_minor_version,
 293             ha->fw_subminor_version);
 294
 295         if (ha->fw_attributes & BIT_9) {
 296                 strcat(str, "FLX");
 297                 return (str);
 298         }
 299
 300         switch (ha->fw_attributes & 0xFF) {
 301         case 0x7:
 302                 strcat(str, "EF");
 303                 break;
 304         case 0x17:
 305                 strcat(str, "TP");
 306                 break;
 307         case 0x37:
 308                 strcat(str, "IP");
 309                 break;
 310         case 0x77:
 311                 strcat(str, "VI");
 312                 break;
 313         default:
 314                 sprintf(un_str, "(%x)", ha->fw_attributes);
 315                 strcat(str, un_str);
 316                 break;
 317         }
 318         if (ha->fw_attributes & 0x100)
 319                 strcat(str, "X");
 320
 321         return (str);
 322 }
 323
 324 static char *
 325 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 326 {
 327         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 328             ha->fw_minor_version,
 329             ha->fw_subminor_version);
 330
 331         if (ha->fw_attributes & BIT_0)
 332                 strcat(str, "[Class 2] ");
 333         if (ha->fw_attributes & BIT_1)
 334                 strcat(str, "[IP] ");
 335         if (ha->fw_attributes & BIT_2)
 336                 strcat(str, "[Multi-ID] ");
 337         if (ha->fw_attributes & BIT_3)
 338                 strcat(str, "[SB-2] ");
 339         if (ha->fw_attributes & BIT_4)
 340                 strcat(str, "[T10 CRC] ");
 341         if (ha->fw_attributes & BIT_5)
 342                 strcat(str, "[VI] ");
 343         if (ha->fw_attributes & BIT_13)
 344                 strcat(str, "[Experimental]");
 345         return str;
 346 }
 347
 348 static inline srb_t *
 349 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 350     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 351 {
 352         srb_t *sp;
 353
 354         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 355         if (!sp)
 356                 return sp;
 357
 358         sp->ha = ha;
 359         sp->fcport = fcport;
 360         sp->cmd = cmd;
 361         sp->flags = 0;
 362         CMD_SP(cmd) = (void *)sp;
 363         cmd->scsi_done = done;
 364
 365         return sp;
 366 }
 367
 368 static int
 369 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 370 {
 371         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 372         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 373         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 374         srb_t *sp;
 375         int rval;
 376
 377         if (unlikely(pci_channel_offline(ha->pdev))) {
 378                 cmd->result = DID_REQUEUE << 16;
 379                 goto qc_fail_command;
 380         }
 381
 382         rval = fc_remote_port_chkready(rport);
 383         if (rval) {
 384                 cmd->result = rval;
 385                 goto qc_fail_command;
 386         }
 387
 388         /* Close window on fcport/rport state-transitioning. */
 389         if (!*(fc_port_t **)rport->dd_data) {
 390                 cmd->result = DID_IMM_RETRY << 16;
 391                 goto qc_fail_command;
 392         }
 393
 394         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 395                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 396                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 397                         cmd->result = DID_NO_CONNECT << 16;
 398                         goto qc_fail_command;
 399                 }
 400                 goto qc_host_busy;
 401         }
 402
 403         spin_unlock_irq(ha->host->host_lock);
 404
 405         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 406         if (!sp)
 407                 goto qc_host_busy_lock;
 408
 409         rval = qla2x00_start_scsi(sp);
 410         if (rval != QLA_SUCCESS)
 411                 goto qc_host_busy_free_sp;
 412
 413         spin_lock_irq(ha->host->host_lock);
 414
 415         return 0;
 416
 417 qc_host_busy_free_sp:
 418         qla2x00_sp_free_dma(ha, sp);
 419         mempool_free(sp, ha->srb_mempool);
 420
 421 qc_host_busy_lock:
 422         spin_lock_irq(ha->host->host_lock);
 423
 424 qc_host_busy:
 425         return SCSI_MLQUEUE_HOST_BUSY;
 426
 427 qc_fail_command:
 428         done(cmd);
 429
 430         return 0;
 431 }
 432
 433
 434 static int
 435 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 436 {
 437         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 438         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 439         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 440         srb_t *sp;
 441         int rval;
 442         scsi_qla_host_t *pha = to_qla_parent(ha);
 443
 444         if (unlikely(pci_channel_offline(ha->pdev))) {
 445                 cmd->result = DID_REQUEUE << 16;
 446                 goto qc24_fail_command;
 447         }
 448
 449         rval = fc_remote_port_chkready(rport);
 450         if (rval) {
 451                 cmd->result = rval;
 452                 goto qc24_fail_command;
 453         }
 454
 455         /* Close window on fcport/rport state-transitioning. */
 456         if (!*(fc_port_t **)rport->dd_data) {
 457                 cmd->result = DID_IMM_RETRY << 16;
 458                 goto qc24_fail_command;
 459         }
 460
 461         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 462                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 463                     atomic_read(&pha->loop_state) == LOOP_DEAD) {
 464                         cmd->result = DID_NO_CONNECT << 16;
 465                         goto qc24_fail_command;
 466                 }
 467                 goto qc24_host_busy;
 468         }
 469
 470         spin_unlock_irq(ha->host->host_lock);
 471
 472         sp = qla2x00_get_new_sp(pha, fcport, cmd, done);
 473         if (!sp)
 474                 goto qc24_host_busy_lock;
 475
 476         rval = qla24xx_start_scsi(sp);
 477         if (rval != QLA_SUCCESS)
 478                 goto qc24_host_busy_free_sp;
 479
 480         spin_lock_irq(ha->host->host_lock);
 481
 482         return 0;
 483
 484 qc24_host_busy_free_sp:
 485         qla2x00_sp_free_dma(pha, sp);
 486         mempool_free(sp, pha->srb_mempool);
 487
 488 qc24_host_busy_lock:
 489         spin_lock_irq(ha->host->host_lock);
 490
 491 qc24_host_busy:
 492         return SCSI_MLQUEUE_HOST_BUSY;
 493
 494 qc24_fail_command:
 495         done(cmd);
 496
 497         return 0;
 498 }
 499
 500
 501 /*
 502  * qla2x00_eh_wait_on_command
 503  *    Waits for the command to be returned by the Firmware for some
 504  *    max time.
 505  *
 506  * Input:
 507  *    ha = actual ha whose done queue will contain the command
 508  *            returned by firmware.
 509  *    cmd = Scsi Command to wait on.
 510  *    flag = Abort/Reset(Bus or Device Reset)
 511  *
 512  * Return:
 513  *    Not Found : 0
 514  *    Found : 1
 515  */
 516 static int
 517 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 518 {
 519 #define ABORT_POLLING_PERIOD    1000
 520 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 521         unsigned long wait_iter = ABORT_WAIT_ITER;
 522         int ret = QLA_SUCCESS;
 523
 524         while (CMD_SP(cmd)) {
 525                 msleep(ABORT_POLLING_PERIOD);
 526
 527                 if (--wait_iter)
 528                         break;
 529         }
 530         if (CMD_SP(cmd))
 531                 ret = QLA_FUNCTION_FAILED;
 532
 533         return ret;
 534 }
 535
 536 /*
 537  * qla2x00_wait_for_hba_online
 538  *    Wait till the HBA is online after going through
 539  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 540  *    finally HBA is disabled ie marked offline
 541  *
 542  * Input:
 543  *     ha - pointer to host adapter structure
 544  *
 545  * Note:
 546  *    Does context switching-Release SPIN_LOCK
 547  *    (if any) before calling this routine.
 548  *
 549  * Return:
 550  *    Success (Adapter is online) : 0
 551  *    Failed  (Adapter is offline/disabled) : 1
 552  */
 553 int
 554 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 555 {
 556         int             return_status;
 557         unsigned long   wait_online;
 558         scsi_qla_host_t *pha = to_qla_parent(ha);
 559
 560         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 561         while (((test_bit(ISP_ABORT_NEEDED, &pha->dpc_flags)) ||
 562             test_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags) ||
 563             test_bit(ISP_ABORT_RETRY, &pha->dpc_flags) ||
 564             pha->dpc_active) && time_before(jiffies, wait_online)) {
 565
 566                 msleep(1000);
 567         }
 568         if (pha->flags.online)
 569                 return_status = QLA_SUCCESS;
 570         else
 571                 return_status = QLA_FUNCTION_FAILED;
 572
 573         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 574
 575         return (return_status);
 576 }
 577
 578 /*
 579  * qla2x00_wait_for_loop_ready
 580  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 581  *    to be in LOOP_READY state.
 582  * Input:
 583  *     ha - pointer to host adapter structure
 584  *
 585  * Note:
 586  *    Does context switching-Release SPIN_LOCK
 587  *    (if any) before calling this routine.
 588  *
 589  *
 590  * Return:
 591  *    Success (LOOP_READY) : 0
 592  *    Failed  (LOOP_NOT_READY) : 1
 593  */
 594 static inline int
 595 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 596 {
 597         int      return_status = QLA_SUCCESS;
 598         unsigned long loop_timeout ;
 599         scsi_qla_host_t *pha = to_qla_parent(ha);
 600
 601         /* wait for 5 min at the max for loop to be ready */
 602         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 603
 604         while ((!atomic_read(&pha->loop_down_timer) &&
 605             atomic_read(&pha->loop_state) == LOOP_DOWN) ||
 606             atomic_read(&pha->loop_state) != LOOP_READY) {
 607                 if (atomic_read(&pha->loop_state) == LOOP_DEAD) {
 608                         return_status = QLA_FUNCTION_FAILED;
 609                         break;
 610                 }
 611                 msleep(1000);
 612                 if (time_after_eq(jiffies, loop_timeout)) {
 613                         return_status = QLA_FUNCTION_FAILED;
 614                         break;
 615                 }
 616         }
 617         return (return_status);
 618 }
 619
 620 static void
 621 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 622 {
 623         struct Scsi_Host *shost = cmnd->device->host;
 624         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 625         unsigned long flags;
 626
 627         spin_lock_irqsave(shost->host_lock, flags);
 628         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 629                 spin_unlock_irqrestore(shost->host_lock, flags);
 630                 msleep(1000);
 631                 spin_lock_irqsave(shost->host_lock, flags);
 632         }
 633         spin_unlock_irqrestore(shost->host_lock, flags);
 634         return;
 635 }
 636
 637 /**************************************************************************
 638 * qla2xxx_eh_abort
 639 *
 640 * Description:
 641 *    The abort function will abort the specified command.
 642 *
 643 * Input:
 644 *    cmd = Linux SCSI command packet to be aborted.
 645 *
 646 * Returns:
 647 *    Either SUCCESS or FAILED.
 648 *
 649 * Note:
 650 *    Only return FAILED if command not returned by firmware.
 651 **************************************************************************/
 652 static int
 653 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 654 {
 655         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 656         srb_t *sp;
 657         int ret, i;
 658         unsigned int id, lun;
 659         unsigned long serial;
 660         unsigned long flags;
 661         int wait = 0;
 662         scsi_qla_host_t *pha = to_qla_parent(ha);
 663
 664         qla2x00_block_error_handler(cmd);
 665
 666         if (!CMD_SP(cmd))
 667                 return SUCCESS;
 668
 669         ret = SUCCESS;
 670
 671         id = cmd->device->id;
 672         lun = cmd->device->lun;
 673         serial = cmd->serial_number;
 674
 675         /* Check active list for command command. */
 676         spin_lock_irqsave(&pha->hardware_lock, flags);
 677         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 678                 sp = pha->outstanding_cmds[i];
 679
 680                 if (sp == NULL)
 681                         continue;
 682
 683                 if (sp->cmd != cmd)
 684                         continue;
 685
 686                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 687                     __func__, ha->host_no, sp, serial));
 688                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 689
 690                 spin_unlock_irqrestore(&pha->hardware_lock, flags);
 691                 if (ha->isp_ops->abort_command(ha, sp)) {
 692                         DEBUG2(printk("%s(%ld): abort_command "
 693                             "mbx failed.\n", __func__, ha->host_no));
 694                 } else {
 695                         DEBUG3(printk("%s(%ld): abort_command "
 696                             "mbx success.\n", __func__, ha->host_no));
 697                         wait = 1;
 698                 }
 699                 spin_lock_irqsave(&pha->hardware_lock, flags);
 700
 701                 break;
 702         }
 703         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 704
 705         /* Wait for the command to be returned. */
 706         if (wait) {
 707                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 708                         qla_printk(KERN_ERR, ha,
 709                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 710                             "%x.\n", ha->host_no, id, lun, serial, ret);
 711                         ret = FAILED;
 712                 }
 713         }
 714
 715         qla_printk(KERN_INFO, ha,
 716             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 717             ha->host_no, id, lun, wait, serial, ret);
 718
 719         return ret;
 720 }
 721
 722 /**************************************************************************
 723 * qla2x00_eh_wait_for_pending_target_commands
 724 *
 725 * Description:
 726 *    Waits for all the commands to come back from the specified target.
 727 *
 728 * Input:
 729 *    ha - pointer to scsi_qla_host structure.
 730 *    t  - target
 731 * Returns:
 732 *    Either SUCCESS or FAILED.
 733 *
 734 * Note:
 735 **************************************************************************/
 736 static int
 737 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 738 {
 739         int     cnt;
 740         int     status;
 741         srb_t           *sp;
 742         struct scsi_cmnd *cmd;
 743         unsigned long flags;
 744         scsi_qla_host_t *pha = to_qla_parent(ha);
 745
 746         status = 0;
 747
 748         /*
 749          * Waiting for all commands for the designated target in the active
 750          * array
 751          */
 752         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 753                 spin_lock_irqsave(&pha->hardware_lock, flags);
 754                 sp = pha->outstanding_cmds[cnt];
 755                 if (sp) {
 756                         cmd = sp->cmd;
 757                         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 758                         if (cmd->device->id == t &&
 759                             ha->vp_idx == sp->ha->vp_idx) {
 760                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 761                                         status = 1;
 762                                         break;
 763                                 }
 764                         }
 765                 } else {
 766                         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 767                 }
 768         }
 769         return (status);
 770 }
 771
 772
 773 /**************************************************************************
 774 * qla2xxx_eh_device_reset
 775 *
 776 * Description:
 777 *    The device reset function will reset the target and abort any
 778 *    executing commands.
 779 *
 780 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 781 *          attempt to use this value, even if you determine it is
 782 *          non-null.
 783 *
 784 * Input:
 785 *    cmd = Linux SCSI command packet of the command that cause the
 786 *          bus device reset.
 787 *
 788 * Returns:
 789 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 790 *
 791 **************************************************************************/
 792 static int
 793 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 794 {
 795         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 796         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 797         int ret = FAILED;
 798         unsigned int id, lun;
 799         unsigned long serial;
 800
 801         qla2x00_block_error_handler(cmd);
 802
 803         id = cmd->device->id;
 804         lun = cmd->device->lun;
 805         serial = cmd->serial_number;
 806
 807         if (!fcport)
 808                 return ret;
 809
 810         qla_printk(KERN_INFO, ha,
 811             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 812
 813         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 814                 goto eh_dev_reset_done;
 815
 816         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 817                 if (qla2x00_device_reset(ha, fcport) == 0)
 818                         ret = SUCCESS;
 819
 820 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 821                 if (ret == SUCCESS) {
 822                         if (fcport->flags & FC_FABRIC_DEVICE) {
 823                                 ha->isp_ops->fabric_logout(ha, fcport->loop_id);
 824                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 825                         }
 826                 }
 827 #endif
 828         } else {
 829                 DEBUG2(printk(KERN_INFO
 830                     "%s failed: loop not ready\n",__func__));
 831         }
 832
 833         if (ret == FAILED) {
 834                 DEBUG3(printk("%s(%ld): device reset failed\n",
 835                     __func__, ha->host_no));
 836                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 837                     __func__);
 838
 839                 goto eh_dev_reset_done;
 840         }
 841
 842         /* Flush outstanding commands. */
 843         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 844                 ret = FAILED;
 845         if (ret == FAILED) {
 846                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 847                     __func__, ha->host_no));
 848                 qla_printk(KERN_INFO, ha,
 849                     "%s: failed while waiting for commands\n", __func__);
 850         } else
 851                 qla_printk(KERN_INFO, ha,
 852                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 853                     id, lun);
 854  eh_dev_reset_done:
 855         return ret;
 856 }
 857
 858 /**************************************************************************
 859 * qla2x00_eh_wait_for_pending_commands
 860 *
 861 * Description:
 862 *    Waits for all the commands to come back from the specified host.
 863 *
 864 * Input:
 865 *    ha - pointer to scsi_qla_host structure.
 866 *
 867 * Returns:
 868 *    1 : SUCCESS
 869 *    0 : FAILED
 870 *
 871 * Note:
 872 **************************************************************************/
 873 static int
 874 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 875 {
 876         int     cnt;
 877         int     status;
 878         srb_t           *sp;
 879         struct scsi_cmnd *cmd;
 880         unsigned long flags;
 881
 882         status = 1;
 883
 884         /*
 885          * Waiting for all commands for the designated target in the active
 886          * array
 887          */
 888         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 889                 spin_lock_irqsave(&ha->hardware_lock, flags);
 890                 sp = ha->outstanding_cmds[cnt];
 891                 if (sp) {
 892                         cmd = sp->cmd;
 893                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 894                         status = qla2x00_eh_wait_on_command(ha, cmd);
 895                         if (status == 0)
 896                                 break;
 897                 }
 898                 else {
 899                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 900                 }
 901         }
 902         return (status);
 903 }
 904
 905
 906 /**************************************************************************
 907 * qla2xxx_eh_bus_reset
 908 *
 909 * Description:
 910 *    The bus reset function will reset the bus and abort any executing
 911 *    commands.
 912 *
 913 * Input:
 914 *    cmd = Linux SCSI command packet of the command that cause the
 915 *          bus reset.
 916 *
 917 * Returns:
 918 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 919 *
 920 **************************************************************************/
 921 static int
 922 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 923 {
 924         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 925         scsi_qla_host_t *pha = to_qla_parent(ha);
 926         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 927         int ret = FAILED;
 928         unsigned int id, lun;
 929         unsigned long serial;
 930
 931         qla2x00_block_error_handler(cmd);
 932
 933         id = cmd->device->id;
 934         lun = cmd->device->lun;
 935         serial = cmd->serial_number;
 936
 937         if (!fcport)
 938                 return ret;
 939
 940         qla_printk(KERN_INFO, ha,
 941             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 942
 943         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 944                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 945                 goto eh_bus_reset_done;
 946         }
 947
 948         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 949                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 950                         ret = SUCCESS;
 951         }
 952         if (ret == FAILED)
 953                 goto eh_bus_reset_done;
 954
 955         /* Flush outstanding commands. */
 956         if (!qla2x00_eh_wait_for_pending_commands(pha))
 957                 ret = FAILED;
 958
 959 eh_bus_reset_done:
 960         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 961             (ret == FAILED) ? "failed" : "succeded");
 962
 963         return ret;
 964 }
 965
 966 /**************************************************************************
 967 * qla2xxx_eh_host_reset
 968 *
 969 * Description:
 970 *    The reset function will reset the Adapter.
 971 *
 972 * Input:
 973 *      cmd = Linux SCSI command packet of the command that cause the
 974 *            adapter reset.
 975 *
 976 * Returns:
 977 *      Either SUCCESS or FAILED.
 978 *
 979 * Note:
 980 **************************************************************************/
 981 static int
 982 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 983 {
 984         scsi_qla_host_t *ha = shost_priv(cmd->device->host);
 985         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 986         int ret = FAILED;
 987         unsigned int id, lun;
 988         unsigned long serial;
 989         scsi_qla_host_t *pha = to_qla_parent(ha);
 990
 991         qla2x00_block_error_handler(cmd);
 992
 993         id = cmd->device->id;
 994         lun = cmd->device->lun;
 995         serial = cmd->serial_number;
 996
 997         if (!fcport)
 998                 return ret;
 999
1000         qla_printk(KERN_INFO, ha,
1001             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
1002
1003         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1004                 goto eh_host_reset_lock;
1005
1006         /*
1007          * Fixme-may be dpc thread is active and processing
1008          * loop_resync,so wait a while for it to
1009          * be completed and then issue big hammer.Otherwise
1010          * it may cause I/O failure as big hammer marks the
1011          * devices as lost kicking of the port_down_timer
1012          * while dpc is stuck for the mailbox to complete.
1013          */
1014         qla2x00_wait_for_loop_ready(ha);
1015         set_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1016         if (qla2x00_abort_isp(pha)) {
1017                 clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1018                 /* failed. schedule dpc to try */
1019                 set_bit(ISP_ABORT_NEEDED, &pha->dpc_flags);
1020
1021                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1022                         goto eh_host_reset_lock;
1023         }
1024         clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1025
1026         /* Waiting for our command in done_queue to be returned to OS.*/
1027         if (qla2x00_eh_wait_for_pending_commands(pha))
1028                 ret = SUCCESS;
1029
1030         if (ha->parent)
1031                 qla2x00_vp_abort_isp(ha);
1032
1033 eh_host_reset_lock:
1034         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1035             (ret == FAILED) ? "failed" : "succeded");
1036
1037         return ret;
1038 }
1039
1040 /*
1041 * qla2x00_loop_reset
1042 *      Issue loop reset.
1043 *
1044 * Input:
1045 *      ha = adapter block pointer.
1046 *
1047 * Returns:
1048 *      0 = success
1049 */
1050 int
1051 qla2x00_loop_reset(scsi_qla_host_t *ha)
1052 {
1053         int ret;
1054         struct fc_port *fcport;
1055
1056         if (ha->flags.enable_lip_full_login) {
1057                 ret = qla2x00_full_login_lip(ha);
1058                 if (ret != QLA_SUCCESS) {
1059                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1060                             "full_login_lip=%d.\n", __func__, ha->host_no,
1061                             ret));
1062                 }
1063                 atomic_set(&ha->loop_state, LOOP_DOWN);
1064                 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
1065                 qla2x00_mark_all_devices_lost(ha, 0);
1066                 qla2x00_wait_for_loop_ready(ha);
1067         }
1068
1069         if (ha->flags.enable_lip_reset) {
1070                 ret = qla2x00_lip_reset(ha);
1071                 if (ret != QLA_SUCCESS) {
1072                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1073                             "lip_reset=%d.\n", __func__, ha->host_no, ret));
1074                 }
1075                 qla2x00_wait_for_loop_ready(ha);
1076         }
1077
1078         if (ha->flags.enable_target_reset) {
1079                 list_for_each_entry(fcport, &ha->fcports, list) {
1080                         if (fcport->port_type != FCT_TARGET)
1081                                 continue;
1082
1083                         ret = qla2x00_device_reset(ha, fcport);
1084                         if (ret != QLA_SUCCESS) {
1085                                 DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1086                                     "target_reset=%d d_id=%x.\n", __func__,
1087                                     ha->host_no, ret, fcport->d_id.b24));
1088                         }
1089                 }
1090         }
1091
1092         /* Issue marker command only when we are going to start the I/O */
1093         ha->marker_needed = 1;
1094
1095         return QLA_SUCCESS;
1096 }
1097
1098 /*
1099  * qla2x00_device_reset
1100  *      Issue bus device reset message to the target.
1101  *
1102  * Input:
1103  *      ha = adapter block pointer.
1104  *      t = SCSI ID.
1105  *      TARGET_QUEUE_LOCK must be released.
1106  *      ADAPTER_STATE_LOCK must be released.
1107  *
1108  * Context:
1109  *      Kernel context.
1110  */
1111 static int
1112 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1113 {
1114         /* Abort Target command will clear Reservation */
1115         return ha->isp_ops->abort_target(reset_fcport);
1116 }
1117
1118 void
1119 qla2x00_abort_all_cmds(scsi_qla_host_t *ha, int res)
1120 {
1121         int cnt;
1122         unsigned long flags;
1123         srb_t *sp;
1124
1125         spin_lock_irqsave(&ha->hardware_lock, flags);
1126         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
1127                 sp = ha->outstanding_cmds[cnt];
1128                 if (sp) {
1129                         ha->outstanding_cmds[cnt] = NULL;
1130                         sp->flags = 0;
1131                         sp->cmd->result = res;
1132                         sp->cmd->host_scribble = (unsigned char *)NULL;
1133                         qla2x00_sp_compl(ha, sp);
1134                 }
1135         }
1136         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1137 }
1138
1139 static int
1140 qla2xxx_slave_alloc(struct scsi_device *sdev)
1141 {
1142         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1143
1144         if (!rport || fc_remote_port_chkready(rport))
1145                 return -ENXIO;
1146
1147         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1148
1149         return 0;
1150 }
1151
1152 static int
1153 qla2xxx_slave_configure(struct scsi_device *sdev)
1154 {
1155         scsi_qla_host_t *ha = shost_priv(sdev->host);
1156         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1157
1158         if (sdev->tagged_supported)
1159                 scsi_activate_tcq(sdev, ha->max_q_depth);
1160         else
1161                 scsi_deactivate_tcq(sdev, ha->max_q_depth);
1162
1163         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1164
1165         return 0;
1166 }
1167
1168 static void
1169 qla2xxx_slave_destroy(struct scsi_device *sdev)
1170 {
1171         sdev->hostdata = NULL;
1172 }
1173
1174 static int
1175 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1176 {
1177         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1178         return sdev->queue_depth;
1179 }
1180
1181 static int
1182 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1183 {
1184         if (sdev->tagged_supported) {
1185                 scsi_set_tag_type(sdev, tag_type);
1186                 if (tag_type)
1187                         scsi_activate_tcq(sdev, sdev->queue_depth);
1188                 else
1189                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1190         } else
1191                 tag_type = 0;
1192
1193         return tag_type;
1194 }
1195
1196 /**
1197  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1198  * @ha: HA context
1199  *
1200  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1201  * supported addressing method.
1202  */
1203 static void
1204 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1205 {
1206         /* Assume a 32bit DMA mask. */
1207         ha->flags.enable_64bit_addressing = 0;
1208
1209         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1210                 /* Any upper-dword bits set? */
1211                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1212                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1213                         /* Ok, a 64bit DMA mask is applicable. */
1214                         ha->flags.enable_64bit_addressing = 1;
1215                         ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
1216                         ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
1217                         return;
1218                 }
1219         }
1220
1221         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1222         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1223 }
1224
1225 static void
1226 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1227 {
1228         unsigned long flags = 0;
1229         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1230
1231         spin_lock_irqsave(&ha->hardware_lock, flags);
1232         ha->interrupts_on = 1;
1233         /* enable risc and host interrupts */
1234         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1235         RD_REG_WORD(&reg->ictrl);
1236         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1237
1238 }
1239
1240 static void
1241 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1242 {
1243         unsigned long flags = 0;
1244         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1245
1246         spin_lock_irqsave(&ha->hardware_lock, flags);
1247         ha->interrupts_on = 0;
1248         /* disable risc and host interrupts */
1249         WRT_REG_WORD(&reg->ictrl, 0);
1250         RD_REG_WORD(&reg->ictrl);
1251         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1252 }
1253
1254 static void
1255 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1256 {
1257         unsigned long flags = 0;
1258         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1259
1260         spin_lock_irqsave(&ha->hardware_lock, flags);
1261         ha->interrupts_on = 1;
1262         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1263         RD_REG_DWORD(&reg->ictrl);
1264         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1265 }
1266
1267 static void
1268 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1269 {
1270         unsigned long flags = 0;
1271         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1272
1273         spin_lock_irqsave(&ha->hardware_lock, flags);
1274         ha->interrupts_on = 0;
1275         WRT_REG_DWORD(&reg->ictrl, 0);
1276         RD_REG_DWORD(&reg->ictrl);
1277         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1278 }
1279
1280 static struct isp_operations qla2100_isp_ops = {
1281         .pci_config             = qla2100_pci_config,
1282         .reset_chip             = qla2x00_reset_chip,
1283         .chip_diag              = qla2x00_chip_diag,
1284         .config_rings           = qla2x00_config_rings,
1285         .reset_adapter          = qla2x00_reset_adapter,
1286         .nvram_config           = qla2x00_nvram_config,
1287         .update_fw_options      = qla2x00_update_fw_options,
1288         .load_risc              = qla2x00_load_risc,
1289         .pci_info_str           = qla2x00_pci_info_str,
1290         .fw_version_str         = qla2x00_fw_version_str,
1291         .intr_handler           = qla2100_intr_handler,
1292         .enable_intrs           = qla2x00_enable_intrs,
1293         .disable_intrs          = qla2x00_disable_intrs,
1294         .abort_command          = qla2x00_abort_command,
1295         .abort_target           = qla2x00_abort_target,
1296         .fabric_login           = qla2x00_login_fabric,
1297         .fabric_logout          = qla2x00_fabric_logout,
1298         .calc_req_entries       = qla2x00_calc_iocbs_32,
1299         .build_iocbs            = qla2x00_build_scsi_iocbs_32,
1300         .prep_ms_iocb           = qla2x00_prep_ms_iocb,
1301         .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
1302         .read_nvram             = qla2x00_read_nvram_data,
1303         .write_nvram            = qla2x00_write_nvram_data,
1304         .fw_dump                = qla2100_fw_dump,
1305         .beacon_on              = NULL,
1306         .beacon_off             = NULL,
1307         .beacon_blink           = NULL,
1308         .read_optrom            = qla2x00_read_optrom_data,
1309         .write_optrom           = qla2x00_write_optrom_data,
1310         .get_flash_version      = qla2x00_get_flash_version,
1311 };
1312
1313 static struct isp_operations qla2300_isp_ops = {
1314         .pci_config             = qla2300_pci_config,
1315         .reset_chip             = qla2x00_reset_chip,
1316         .chip_diag              = qla2x00_chip_diag,
1317         .config_rings           = qla2x00_config_rings,
1318         .reset_adapter          = qla2x00_reset_adapter,
1319         .nvram_config           = qla2x00_nvram_config,
1320         .update_fw_options      = qla2x00_update_fw_options,
1321         .load_risc              = qla2x00_load_risc,
1322         .pci_info_str           = qla2x00_pci_info_str,
1323         .fw_version_str         = qla2x00_fw_version_str,
1324         .intr_handler           = qla2300_intr_handler,
1325         .enable_intrs           = qla2x00_enable_intrs,
1326         .disable_intrs          = qla2x00_disable_intrs,
1327         .abort_command          = qla2x00_abort_command,
1328         .abort_target           = qla2x00_abort_target,
1329         .fabric_login           = qla2x00_login_fabric,
1330         .fabric_logout          = qla2x00_fabric_logout,
1331         .calc_req_entries       = qla2x00_calc_iocbs_32,
1332         .build_iocbs            = qla2x00_build_scsi_iocbs_32,
1333         .prep_ms_iocb           = qla2x00_prep_ms_iocb,
1334         .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
1335         .read_nvram             = qla2x00_read_nvram_data,
1336         .write_nvram            = qla2x00_write_nvram_data,
1337         .fw_dump                = qla2300_fw_dump,
1338         .beacon_on              = qla2x00_beacon_on,
1339         .beacon_off             = qla2x00_beacon_off,
1340         .beacon_blink           = qla2x00_beacon_blink,
1341         .read_optrom            = qla2x00_read_optrom_data,
1342         .write_optrom           = qla2x00_write_optrom_data,
1343         .get_flash_version      = qla2x00_get_flash_version,
1344 };
1345
1346 static struct isp_operations qla24xx_isp_ops = {
1347         .pci_config             = qla24xx_pci_config,
1348         .reset_chip             = qla24xx_reset_chip,
1349         .chip_diag              = qla24xx_chip_diag,
1350         .config_rings           = qla24xx_config_rings,
1351         .reset_adapter          = qla24xx_reset_adapter,
1352         .nvram_config           = qla24xx_nvram_config,
1353         .update_fw_options      = qla24xx_update_fw_options,
1354         .load_risc              = qla24xx_load_risc,
1355         .pci_info_str           = qla24xx_pci_info_str,
1356         .fw_version_str         = qla24xx_fw_version_str,
1357         .intr_handler           = qla24xx_intr_handler,
1358         .enable_intrs           = qla24xx_enable_intrs,
1359         .disable_intrs          = qla24xx_disable_intrs,
1360         .abort_command          = qla24xx_abort_command,
1361         .abort_target           = qla24xx_abort_target,
1362         .fabric_login           = qla24xx_login_fabric,
1363         .fabric_logout          = qla24xx_fabric_logout,
1364         .calc_req_entries       = NULL,
1365         .build_iocbs            = NULL,
1366         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1367         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1368         .read_nvram             = qla24xx_read_nvram_data,
1369         .write_nvram            = qla24xx_write_nvram_data,
1370         .fw_dump                = qla24xx_fw_dump,
1371         .beacon_on              = qla24xx_beacon_on,
1372         .beacon_off             = qla24xx_beacon_off,
1373         .beacon_blink           = qla24xx_beacon_blink,
1374         .read_optrom            = qla24xx_read_optrom_data,
1375         .write_optrom           = qla24xx_write_optrom_data,
1376         .get_flash_version      = qla24xx_get_flash_version,
1377 };
1378
1379 static struct isp_operations qla25xx_isp_ops = {
1380         .pci_config             = qla25xx_pci_config,
1381         .reset_chip             = qla24xx_reset_chip,
1382         .chip_diag              = qla24xx_chip_diag,
1383         .config_rings           = qla24xx_config_rings,
1384         .reset_adapter          = qla24xx_reset_adapter,
1385         .nvram_config           = qla24xx_nvram_config,
1386         .update_fw_options      = qla24xx_update_fw_options,
1387         .load_risc              = qla24xx_load_risc,
1388         .pci_info_str           = qla24xx_pci_info_str,
1389         .fw_version_str         = qla24xx_fw_version_str,
1390         .intr_handler           = qla24xx_intr_handler,
1391         .enable_intrs           = qla24xx_enable_intrs,
1392         .disable_intrs          = qla24xx_disable_intrs,
1393         .abort_command          = qla24xx_abort_command,
1394         .abort_target           = qla24xx_abort_target,
1395         .fabric_login           = qla24xx_login_fabric,
1396         .fabric_logout          = qla24xx_fabric_logout,
1397         .calc_req_entries       = NULL,
1398         .build_iocbs            = NULL,
1399         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1400         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1401         .read_nvram             = qla25xx_read_nvram_data,
1402         .write_nvram            = qla25xx_write_nvram_data,
1403         .fw_dump                = qla25xx_fw_dump,
1404         .beacon_on              = qla24xx_beacon_on,
1405         .beacon_off             = qla24xx_beacon_off,
1406         .beacon_blink           = qla24xx_beacon_blink,
1407         .read_optrom            = qla25xx_read_optrom_data,
1408         .write_optrom           = qla24xx_write_optrom_data,
1409         .get_flash_version      = qla24xx_get_flash_version,
1410 };
1411
1412 static inline void
1413 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1414 {
1415         ha->device_type = DT_EXTENDED_IDS;
1416         switch (ha->pdev->device) {
1417         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1418                 ha->device_type |= DT_ISP2100;
1419                 ha->device_type &= ~DT_EXTENDED_IDS;
1420                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1421                 break;
1422         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1423                 ha->device_type |= DT_ISP2200;
1424                 ha->device_type &= ~DT_EXTENDED_IDS;
1425                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1426                 break;
1427         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1428                 ha->device_type |= DT_ISP2300;
1429                 ha->device_type |= DT_ZIO_SUPPORTED;
1430                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1431                 break;
1432         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1433                 ha->device_type |= DT_ISP2312;
1434                 ha->device_type |= DT_ZIO_SUPPORTED;
1435                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1436                 break;
1437         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1438                 ha->device_type |= DT_ISP2322;
1439                 ha->device_type |= DT_ZIO_SUPPORTED;
1440                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1441                     ha->pdev->subsystem_device == 0x0170)
1442                         ha->device_type |= DT_OEM_001;
1443                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1444                 break;
1445         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1446                 ha->device_type |= DT_ISP6312;
1447                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1448                 break;
1449         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1450                 ha->device_type |= DT_ISP6322;
1451                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1452                 break;
1453         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1454                 ha->device_type |= DT_ISP2422;
1455                 ha->device_type |= DT_ZIO_SUPPORTED;
1456                 ha->device_type |= DT_FWI2;
1457                 ha->device_type |= DT_IIDMA;
1458                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1459                 break;
1460         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1461                 ha->device_type |= DT_ISP2432;
1462                 ha->device_type |= DT_ZIO_SUPPORTED;
1463                 ha->device_type |= DT_FWI2;
1464                 ha->device_type |= DT_IIDMA;
1465                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1466                 break;
1467         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1468                 ha->device_type |= DT_ISP5422;
1469                 ha->device_type |= DT_FWI2;
1470                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1471                 break;
1472         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1473                 ha->device_type |= DT_ISP5432;
1474                 ha->device_type |= DT_FWI2;
1475                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1476                 break;
1477         case PCI_DEVICE_ID_QLOGIC_ISP2532:
1478                 ha->device_type |= DT_ISP2532;
1479                 ha->device_type |= DT_ZIO_SUPPORTED;
1480                 ha->device_type |= DT_FWI2;
1481                 ha->device_type |= DT_IIDMA;
1482                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1483                 break;
1484         }
1485 }
1486
1487 static int
1488 qla2x00_iospace_config(scsi_qla_host_t *ha)
1489 {
1490         resource_size_t pio;
1491
1492         if (pci_request_selected_regions(ha->pdev, ha->bars,
1493             QLA2XXX_DRIVER_NAME)) {
1494                 qla_printk(KERN_WARNING, ha,
1495                     "Failed to reserve PIO/MMIO regions (%s)\n",
1496                     pci_name(ha->pdev));
1497
1498                 goto iospace_error_exit;
1499         }
1500         if (!(ha->bars & 1))
1501                 goto skip_pio;
1502
1503         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1504         pio = pci_resource_start(ha->pdev, 0);
1505         if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
1506                 if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
1507                         qla_printk(KERN_WARNING, ha,
1508                             "Invalid PCI I/O region size (%s)...\n",
1509                                 pci_name(ha->pdev));
1510                         pio = 0;
1511                 }
1512         } else {
1513                 qla_printk(KERN_WARNING, ha,
1514                     "region #0 not a PIO resource (%s)...\n",
1515                     pci_name(ha->pdev));
1516                 pio = 0;
1517         }
1518         ha->pio_address = pio;
1519
1520 skip_pio:
1521         /* Use MMIO operations for all accesses. */
1522         if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
1523                 qla_printk(KERN_ERR, ha,
1524                     "region #1 not an MMIO resource (%s), aborting\n",
1525                     pci_name(ha->pdev));
1526                 goto iospace_error_exit;
1527         }
1528         if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
1529                 qla_printk(KERN_ERR, ha,
1530                     "Invalid PCI mem region size (%s), aborting\n",
1531                         pci_name(ha->pdev));
1532                 goto iospace_error_exit;
1533         }
1534
1535         ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), MIN_IOBASE_LEN);
1536         if (!ha->iobase) {
1537                 qla_printk(KERN_ERR, ha,
1538                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1539
1540                 goto iospace_error_exit;
1541         }
1542
1543         return (0);
1544
1545 iospace_error_exit:
1546         return (-ENOMEM);
1547 }
1548
1549 static void
1550 qla2xxx_scan_start(struct Scsi_Host *shost)
1551 {
1552         scsi_qla_host_t *ha = shost_priv(shost);
1553
1554         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1555         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1556         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1557 }
1558
1559 static int
1560 qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
1561 {
1562         scsi_qla_host_t *ha = shost_priv(shost);
1563
1564         if (!ha->host)
1565                 return 1;
1566         if (time > ha->loop_reset_delay * HZ)
1567                 return 1;
1568
1569         return atomic_read(&ha->loop_state) == LOOP_READY;
1570 }
1571
1572 /*
1573  * PCI driver interface
1574  */
1575 static int __devinit
1576 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1577 {
1578         int     ret = -ENODEV;
1579         struct Scsi_Host *host;
1580         scsi_qla_host_t *ha;
1581         char pci_info[30];
1582         char fw_str[30];
1583         struct scsi_host_template *sht;
1584         int bars, mem_only = 0;
1585
1586         bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
1587         sht = &qla2x00_driver_template;
1588         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1589             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
1590             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
1591             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 ||
1592             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532) {
1593                 bars = pci_select_bars(pdev, IORESOURCE_MEM);
1594                 sht = &qla24xx_driver_template;
1595                 mem_only = 1;
1596         }
1597
1598         if (mem_only) {
1599                 if (pci_enable_device_mem(pdev))
1600                         goto probe_out;
1601         } else {
1602                 if (pci_enable_device(pdev))
1603                         goto probe_out;
1604         }
1605
1606         if (pci_find_aer_capability(pdev))
1607                 if (pci_enable_pcie_error_reporting(pdev))
1608                         goto probe_out;
1609
1610         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1611         if (host == NULL) {
1612                 printk(KERN_WARNING
1613                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1614                 goto probe_disable_device;
1615         }
1616
1617         /* Clear our data area */
1618         ha = shost_priv(host);
1619         memset(ha, 0, sizeof(scsi_qla_host_t));
1620
1621         ha->pdev = pdev;
1622         ha->host = host;
1623         ha->host_no = host->host_no;
1624         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1625         ha->parent = NULL;
1626         ha->bars = bars;
1627         ha->mem_only = mem_only;
1628         spin_lock_init(&ha->hardware_lock);
1629
1630         /* Set ISP-type information. */
1631         qla2x00_set_isp_flags(ha);
1632
1633         /* Configure PCI I/O space */
1634         ret = qla2x00_iospace_config(ha);
1635         if (ret)
1636                 goto probe_failed;
1637
1638         qla_printk(KERN_INFO, ha,
1639             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1640             ha->iobase);
1641
1642         ha->prev_topology = 0;
1643         ha->init_cb_size = sizeof(init_cb_t);
1644         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER + ha->vp_idx;
1645         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1646         ha->optrom_size = OPTROM_SIZE_2300;
1647
1648         ha->max_q_depth = MAX_Q_DEPTH;
1649         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1650                 ha->max_q_depth = ql2xmaxqdepth;
1651
1652         /* Assign ISP specific operations. */
1653         if (IS_QLA2100(ha)) {
1654                 host->max_id = MAX_TARGETS_2100;
1655                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1656                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1657                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1658                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1659                 host->sg_tablesize = 32;
1660                 ha->gid_list_info_size = 4;
1661                 ha->isp_ops = &qla2100_isp_ops;
1662         } else if (IS_QLA2200(ha)) {
1663                 host->max_id = MAX_TARGETS_2200;
1664                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1665                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1666                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1667                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1668                 ha->gid_list_info_size = 4;
1669                 ha->isp_ops = &qla2100_isp_ops;
1670         } else if (IS_QLA23XX(ha)) {
1671                 host->max_id = MAX_TARGETS_2200;
1672                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1673                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1674                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1675                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1676                 ha->gid_list_info_size = 6;
1677                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1678                         ha->optrom_size = OPTROM_SIZE_2322;
1679                 ha->isp_ops = &qla2300_isp_ops;
1680         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1681                 host->max_id = MAX_TARGETS_2200;
1682                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1683                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1684                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1685                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1686                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1687                 ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
1688                 ha->gid_list_info_size = 8;
1689                 ha->optrom_size = OPTROM_SIZE_24XX;
1690                 ha->isp_ops = &qla24xx_isp_ops;
1691         } else if (IS_QLA25XX(ha)) {
1692                 host->max_id = MAX_TARGETS_2200;
1693                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1694                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1695                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1696                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1697                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1698                 ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
1699                 ha->gid_list_info_size = 8;
1700                 ha->optrom_size = OPTROM_SIZE_25XX;
1701                 ha->isp_ops = &qla25xx_isp_ops;
1702         }
1703         host->can_queue = ha->request_q_length + 128;
1704
1705         /* load the F/W, read paramaters, and init the H/W */
1706         ha->instance = num_hosts;
1707
1708         init_MUTEX(&ha->vport_sem);
1709         init_completion(&ha->mbx_cmd_comp);
1710         complete(&ha->mbx_cmd_comp);
1711         init_completion(&ha->mbx_intr_comp);
1712
1713         INIT_LIST_HEAD(&ha->list);
1714         INIT_LIST_HEAD(&ha->fcports);
1715         INIT_LIST_HEAD(&ha->vp_list);
1716
1717         set_bit(0, (unsigned long *) ha->vp_idx_map);
1718
1719         qla2x00_config_dma_addressing(ha);
1720         if (qla2x00_mem_alloc(ha)) {
1721                 qla_printk(KERN_WARNING, ha,
1722                     "[ERROR] Failed to allocate memory for adapter\n");
1723
1724                 ret = -ENOMEM;
1725                 goto probe_failed;
1726         }
1727
1728         if (qla2x00_initialize_adapter(ha)) {
1729                 qla_printk(KERN_WARNING, ha,
1730                     "Failed to initialize adapter\n");
1731
1732                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1733                     "Adapter flags %x.\n",
1734                     ha->host_no, ha->device_flags));
1735
1736                 ret = -ENODEV;
1737                 goto probe_failed;
1738         }
1739
1740         /*
1741          * Startup the kernel thread for this host adapter
1742          */
1743         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1744                         "%s_dpc", ha->host_str);
1745         if (IS_ERR(ha->dpc_thread)) {
1746                 qla_printk(KERN_WARNING, ha,
1747                     "Unable to start DPC thread!\n");
1748                 ret = PTR_ERR(ha->dpc_thread);
1749                 goto probe_failed;
1750         }
1751
1752         host->this_id = 255;
1753         host->cmd_per_lun = 3;
1754         host->unique_id = ha->instance;
1755         host->max_cmd_len = MAX_CMDSZ;
1756         host->max_channel = MAX_BUSES - 1;
1757         host->max_lun = MAX_LUNS;
1758         host->transportt = qla2xxx_transport_template;
1759
1760         ret = qla2x00_request_irqs(ha);
1761         if (ret)
1762                 goto probe_failed;
1763
1764         /* Initialized the timer */
1765         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1766
1767         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1768             ha->host_no, ha));
1769
1770         pci_set_drvdata(pdev, ha);
1771
1772         ha->flags.init_done = 1;
1773         ha->flags.online = 1;
1774
1775         num_hosts++;
1776
1777         ret = scsi_add_host(host, &pdev->dev);
1778         if (ret)
1779                 goto probe_failed;
1780
1781         scsi_scan_host(host);
1782
1783         qla2x00_alloc_sysfs_attr(ha);
1784
1785         qla2x00_init_host_attr(ha);
1786
1787         qla2x00_dfs_setup(ha);
1788
1789         qla_printk(KERN_INFO, ha, "\n"
1790             " QLogic Fibre Channel HBA Driver: %s\n"
1791             "  QLogic %s - %s\n"
1792             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1793             qla2x00_version_str, ha->model_number,
1794             ha->model_desc ? ha->model_desc: "", pdev->device,
1795             ha->isp_ops->pci_info_str(ha, pci_info), pci_name(pdev),
1796             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1797             ha->isp_ops->fw_version_str(ha, fw_str));
1798
1799         return 0;
1800
1801 probe_failed:
1802         qla2x00_free_device(ha);
1803
1804         scsi_host_put(host);
1805
1806 probe_disable_device:
1807         pci_disable_device(pdev);
1808
1809 probe_out:
1810         return ret;
1811 }
1812
1813 static void
1814 qla2x00_remove_one(struct pci_dev *pdev)
1815 {
1816         scsi_qla_host_t *ha;
1817
1818         ha = pci_get_drvdata(pdev);
1819
1820         qla2x00_dfs_remove(ha);
1821
1822         qla2x00_free_sysfs_attr(ha);
1823
1824         fc_remove_host(ha->host);
1825
1826         scsi_remove_host(ha->host);
1827
1828         qla2x00_free_device(ha);
1829
1830         scsi_host_put(ha->host);
1831
1832         pci_disable_device(pdev);
1833         pci_set_drvdata(pdev, NULL);
1834 }
1835
1836 static void
1837 qla2x00_free_device(scsi_qla_host_t *ha)
1838 {
1839         qla2x00_abort_all_cmds(ha, DID_NO_CONNECT << 16);
1840
1841         /* Disable timer */
1842         if (ha->timer_active)
1843                 qla2x00_stop_timer(ha);
1844
1845         ha->flags.online = 0;
1846
1847         /* Kill the kernel thread for this host */
1848         if (ha->dpc_thread) {
1849                 struct task_struct *t = ha->dpc_thread;
1850
1851                 /*
1852                  * qla2xxx_wake_dpc checks for ->dpc_thread
1853                  * so we need to zero it out.
1854                  */
1855                 ha->dpc_thread = NULL;
1856                 kthread_stop(t);
1857         }
1858
1859         if (ha->flags.fce_enabled)
1860                 qla2x00_disable_fce_trace(ha, NULL, NULL);
1861
1862         if (ha->eft)
1863                 qla2x00_disable_eft_trace(ha);
1864
1865         /* Stop currently executing firmware. */
1866         qla2x00_try_to_stop_firmware(ha);
1867
1868         /* turn-off interrupts on the card */
1869         if (ha->interrupts_on)
1870                 ha->isp_ops->disable_intrs(ha);
1871
1872         qla2x00_mem_free(ha);
1873
1874         qla2x00_free_irqs(ha);
1875
1876         /* release io space registers  */
1877         if (ha->iobase)
1878                 iounmap(ha->iobase);
1879         pci_release_selected_regions(ha->pdev, ha->bars);
1880 }
1881
1882 static inline void
1883 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1884     int defer)
1885 {
1886         unsigned long flags;
1887         struct fc_rport *rport;
1888
1889         if (!fcport->rport)
1890                 return;
1891
1892         rport = fcport->rport;
1893         if (defer) {
1894                 spin_lock_irqsave(&fcport->rport_lock, flags);
1895                 fcport->drport = rport;
1896                 fcport->rport = NULL;
1897                 *(fc_port_t **)rport->dd_data = NULL;
1898                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1899                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1900         } else {
1901                 spin_lock_irqsave(&fcport->rport_lock, flags);
1902                 fcport->rport = NULL;
1903                 *(fc_port_t **)rport->dd_data = NULL;
1904                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1905                 fc_remote_port_delete(rport);
1906         }
1907 }
1908
1909 /*
1910  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1911  *
1912  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1913  *
1914  * Return: None.
1915  *
1916  * Context:
1917  */
1918 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1919     int do_login, int defer)
1920 {
1921         if (atomic_read(&fcport->state) == FCS_ONLINE &&
1922             ha->vp_idx == fcport->vp_idx)
1923                 qla2x00_schedule_rport_del(ha, fcport, defer);
1924
1925         /*
1926          * We may need to retry the login, so don't change the state of the
1927          * port but do the retries.
1928          */
1929         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1930                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1931
1932         if (!do_login)
1933                 return;
1934
1935         if (fcport->login_retry == 0) {
1936                 fcport->login_retry = ha->login_retry_count;
1937                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1938
1939                 DEBUG(printk("scsi(%ld): Port login retry: "
1940                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1941                     "id = 0x%04x retry cnt=%d\n",
1942                     ha->host_no,
1943                     fcport->port_name[0],
1944                     fcport->port_name[1],
1945                     fcport->port_name[2],
1946                     fcport->port_name[3],
1947                     fcport->port_name[4],
1948                     fcport->port_name[5],
1949                     fcport->port_name[6],
1950                     fcport->port_name[7],
1951                     fcport->loop_id,
1952                     fcport->login_retry));
1953         }
1954 }
1955
1956 /*
1957  * qla2x00_mark_all_devices_lost
1958  *      Updates fcport state when device goes offline.
1959  *
1960  * Input:
1961  *      ha = adapter block pointer.
1962  *      fcport = port structure pointer.
1963  *
1964  * Return:
1965  *      None.
1966  *
1967  * Context:
1968  */
1969 void
1970 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1971 {
1972         fc_port_t *fcport;
1973         scsi_qla_host_t *pha = to_qla_parent(ha);
1974
1975         list_for_each_entry(fcport, &pha->fcports, list) {
1976                 if (ha->vp_idx != 0 && ha->vp_idx != fcport->vp_idx)
1977                         continue;
1978                 /*
1979                  * No point in marking the device as lost, if the device is
1980                  * already DEAD.
1981                  */
1982                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1983                         continue;
1984                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1985                         if (defer)
1986                                 qla2x00_schedule_rport_del(ha, fcport, defer);
1987                         else if (ha->vp_idx == fcport->vp_idx)
1988                                 qla2x00_schedule_rport_del(ha, fcport, defer);
1989                 }
1990                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1991         }
1992
1993         if (defer)
1994                 qla2xxx_wake_dpc(ha);
1995 }
1996
1997 /*
1998 * qla2x00_mem_alloc
1999 *      Allocates adapter memory.
2000 *
2001 * Returns:
2002 *      0  = success.
2003 *      !0  = failure.
2004 */
2005 static int
2006 qla2x00_mem_alloc(scsi_qla_host_t *ha)
2007 {
2008         char    name[16];
2009
2010         ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
2011             (ha->request_q_length + 1) * sizeof(request_t), &ha->request_dma,
2012             GFP_KERNEL);
2013         if (!ha->request_ring)
2014                 goto fail;
2015
2016         ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
2017             (ha->response_q_length + 1) * sizeof(response_t),
2018             &ha->response_dma, GFP_KERNEL);
2019         if (!ha->response_ring)
2020                 goto fail_free_request_ring;
2021
2022         ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
2023             &ha->gid_list_dma, GFP_KERNEL);
2024         if (!ha->gid_list)
2025                 goto fail_free_response_ring;
2026
2027         ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
2028             &ha->init_cb_dma, GFP_KERNEL);
2029         if (!ha->init_cb)
2030                 goto fail_free_gid_list;
2031
2032         snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
2033             ha->host_no);
2034         ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
2035             DMA_POOL_SIZE, 8, 0);
2036         if (!ha->s_dma_pool)
2037                 goto fail_free_init_cb;
2038
2039         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2040         if (!ha->srb_mempool)
2041                 goto fail_free_s_dma_pool;
2042
2043         /* Get memory for cached NVRAM */
2044         ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
2045         if (!ha->nvram)
2046                 goto fail_free_srb_mempool;
2047
2048         /* Allocate memory for SNS commands */
2049         if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
2050                 /* Get consistent memory allocated for SNS commands */
2051                 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
2052                     sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, GFP_KERNEL);
2053                 if (!ha->sns_cmd)
2054                         goto fail_free_nvram;
2055         } else {
2056                 /* Get consistent memory allocated for MS IOCB */
2057                 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2058                     &ha->ms_iocb_dma);
2059                 if (!ha->ms_iocb)
2060                         goto fail_free_nvram;
2061
2062                 /* Get consistent memory allocated for CT SNS commands */
2063                 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2064                     sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, GFP_KERNEL);
2065                 if (!ha->ct_sns)
2066                         goto fail_free_ms_iocb;
2067         }
2068
2069         return 0;
2070
2071 fail_free_ms_iocb:
2072         dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2073         ha->ms_iocb = NULL;
2074         ha->ms_iocb_dma = 0;
2075 fail_free_nvram:
2076         kfree(ha->nvram);
2077         ha->nvram = NULL;
2078 fail_free_srb_mempool:
2079         mempool_destroy(ha->srb_mempool);
2080         ha->srb_mempool = NULL;
2081 fail_free_s_dma_pool:
2082         dma_pool_destroy(ha->s_dma_pool);
2083         ha->s_dma_pool = NULL;
2084 fail_free_init_cb:
2085         dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
2086             ha->init_cb_dma);
2087         ha->init_cb = NULL;
2088         ha->init_cb_dma = 0;
2089 fail_free_gid_list:
2090         dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2091             ha->gid_list_dma);
2092         ha->gid_list = NULL;
2093         ha->gid_list_dma = 0;
2094 fail_free_response_ring:
2095         dma_free_coherent(&ha->pdev->dev, (ha->response_q_length + 1) *
2096             sizeof(response_t), ha->response_ring, ha->response_dma);
2097         ha->response_ring = NULL;
2098         ha->response_dma = 0;
2099 fail_free_request_ring:
2100         dma_free_coherent(&ha->pdev->dev, (ha->request_q_length + 1) *
2101             sizeof(request_t), ha->request_ring, ha->request_dma);
2102         ha->request_ring = NULL;
2103         ha->request_dma = 0;
2104 fail:
2105         return -ENOMEM;
2106 }
2107
2108 /*
2109 * qla2x00_mem_free
2110 *      Frees all adapter allocated memory.
2111 *
2112 * Input:
2113 *      ha = adapter block pointer.
2114 */
2115 static void
2116 qla2x00_mem_free(scsi_qla_host_t *ha)
2117 {
2118         struct list_head        *fcpl, *fcptemp;
2119         fc_port_t       *fcport;
2120
2121         if (ha->srb_mempool)
2122                 mempool_destroy(ha->srb_mempool);
2123
2124         if (ha->fce)
2125                 dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
2126                     ha->fce_dma);
2127
2128         if (ha->fw_dump) {
2129                 if (ha->eft)
2130                         dma_free_coherent(&ha->pdev->dev,
2131                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2132                 vfree(ha->fw_dump);
2133         }
2134
2135         if (ha->sns_cmd)
2136                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2137                     ha->sns_cmd, ha->sns_cmd_dma);
2138
2139         if (ha->ct_sns)
2140                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2141                     ha->ct_sns, ha->ct_sns_dma);
2142
2143         if (ha->sfp_data)
2144                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2145
2146         if (ha->ms_iocb)
2147                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2148
2149         if (ha->s_dma_pool)
2150                 dma_pool_destroy(ha->s_dma_pool);
2151
2152         if (ha->init_cb)
2153                 dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
2154                     ha->init_cb, ha->init_cb_dma);
2155
2156         if (ha->gid_list)
2157                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2158                     ha->gid_list_dma);
2159
2160         if (ha->response_ring)
2161                 dma_free_coherent(&ha->pdev->dev,
2162                     (ha->response_q_length + 1) * sizeof(response_t),
2163                     ha->response_ring, ha->response_dma);
2164
2165         if (ha->request_ring)
2166                 dma_free_coherent(&ha->pdev->dev,
2167                     (ha->request_q_length + 1) * sizeof(request_t),
2168                     ha->request_ring, ha->request_dma);
2169
2170         ha->srb_mempool = NULL;
2171         ha->eft = NULL;
2172         ha->eft_dma = 0;
2173         ha->sns_cmd = NULL;
2174         ha->sns_cmd_dma = 0;
2175         ha->ct_sns = NULL;
2176         ha->ct_sns_dma = 0;
2177         ha->ms_iocb = NULL;
2178         ha->ms_iocb_dma = 0;
2179         ha->init_cb = NULL;
2180         ha->init_cb_dma = 0;
2181
2182         ha->s_dma_pool = NULL;
2183
2184         ha->gid_list = NULL;
2185         ha->gid_list_dma = 0;
2186
2187         ha->response_ring = NULL;
2188         ha->response_dma = 0;
2189         ha->request_ring = NULL;
2190         ha->request_dma = 0;
2191
2192         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2193                 fcport = list_entry(fcpl, fc_port_t, list);
2194
2195                 /* fc ports */
2196                 list_del_init(&fcport->list);
2197                 kfree(fcport);
2198         }
2199         INIT_LIST_HEAD(&ha->fcports);
2200
2201         ha->fw_dump = NULL;
2202         ha->fw_dumped = 0;
2203         ha->fw_dump_reading = 0;
2204
2205         vfree(ha->optrom_buffer);
2206         kfree(ha->nvram);
2207 }
2208
2209 /**************************************************************************
2210 * qla2x00_do_dpc
2211 *   This kernel thread is a task that is schedule by the interrupt handler
2212 *   to perform the background processing for interrupts.
2213 *
2214 * Notes:
2215 * This task always run in the context of a kernel thread.  It
2216 * is kick-off by the driver's detect code and starts up
2217 * up one per adapter. It immediately goes to sleep and waits for
2218 * some fibre event.  When either the interrupt handler or
2219 * the timer routine detects a event it will one of the task
2220 * bits then wake us up.
2221 **************************************************************************/
2222 static int
2223 qla2x00_do_dpc(void *data)
2224 {
2225         int             rval;
2226         scsi_qla_host_t *ha;
2227         fc_port_t       *fcport;
2228         uint8_t         status;
2229         uint16_t        next_loopid;
2230         struct scsi_qla_host *vha;
2231         int             i;
2232
2233
2234         ha = (scsi_qla_host_t *)data;
2235
2236         set_user_nice(current, -20);
2237
2238         while (!kthread_should_stop()) {
2239                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2240
2241                 set_current_state(TASK_INTERRUPTIBLE);
2242                 schedule();
2243                 __set_current_state(TASK_RUNNING);
2244
2245                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2246
2247                 /* Initialization not yet finished. Don't do anything yet. */
2248                 if (!ha->flags.init_done)
2249                         continue;
2250
2251                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2252
2253                 ha->dpc_active = 1;
2254
2255                 if (ha->flags.mbox_busy) {
2256                         ha->dpc_active = 0;
2257                         continue;
2258                 }
2259
2260                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2261
2262                         DEBUG(printk("scsi(%ld): dpc: sched "
2263                             "qla2x00_abort_isp ha = %p\n",
2264                             ha->host_no, ha));
2265                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2266                             &ha->dpc_flags))) {
2267
2268                                 if (qla2x00_abort_isp(ha)) {
2269                                         /* failed. retry later */
2270                                         set_bit(ISP_ABORT_NEEDED,
2271                                             &ha->dpc_flags);
2272                                 }
2273                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2274                         }
2275
2276                         for_each_mapped_vp_idx(ha, i) {
2277                                 list_for_each_entry(vha, &ha->vp_list,
2278                                     vp_list) {
2279                                         if (i == vha->vp_idx) {
2280                                                 set_bit(ISP_ABORT_NEEDED,
2281                                                     &vha->dpc_flags);
2282                                                 break;
2283                                         }
2284                                 }
2285                         }
2286
2287                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2288                             ha->host_no));
2289                 }
2290
2291                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2292                         qla2x00_update_fcports(ha);
2293
2294                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2295                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2296                             ha->host_no));
2297                         qla2x00_loop_reset(ha);
2298                 }
2299
2300                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2301                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2302
2303                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2304                             ha->host_no));
2305
2306                         qla2x00_rst_aen(ha);
2307                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2308                 }
2309
2310                 /* Retry each device up to login retry count */
2311                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2312                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2313                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2314
2315                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2316                             ha->host_no));
2317
2318                         next_loopid = 0;
2319                         list_for_each_entry(fcport, &ha->fcports, list) {
2320                                 /*
2321                                  * If the port is not ONLINE then try to login
2322                                  * to it if we haven't run out of retries.
2323                                  */
2324                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2325                                     fcport->login_retry) {
2326
2327                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2328                                                 if (fcport->flags &
2329                                                     FCF_TAPE_PRESENT)
2330                                                         ha->isp_ops->fabric_logout(
2331                                                             ha, fcport->loop_id,
2332                                                             fcport->d_id.b.domain,
2333                                                             fcport->d_id.b.area,
2334                                                             fcport->d_id.b.al_pa);
2335                                                 status = qla2x00_fabric_login(
2336                                                     ha, fcport, &next_loopid);
2337                                         } else
2338                                                 status =
2339                                                     qla2x00_local_device_login(
2340                                                         ha, fcport);
2341
2342                                         fcport->login_retry--;
2343                                         if (status == QLA_SUCCESS) {
2344                                                 fcport->old_loop_id = fcport->loop_id;
2345
2346                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2347                                                     ha->host_no, fcport->loop_id));
2348
2349                                                 qla2x00_update_fcport(ha,
2350                                                     fcport);
2351                                         } else if (status == 1) {
2352                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2353                                                 /* retry the login again */
2354                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2355                                                     ha->host_no,
2356                                                     fcport->login_retry, fcport->loop_id));
2357                                         } else {
2358                                                 fcport->login_retry = 0;
2359                                         }
2360                                         if (fcport->login_retry == 0)
2361                                                 fcport->loop_id = FC_NO_LOOP_ID;
2362                                 }
2363                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2364                                         break;
2365                         }
2366                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2367                             ha->host_no));
2368                 }
2369
2370                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2371                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2372
2373                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2374                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2375                             ha->host_no));
2376
2377                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2378
2379                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2380                             ha->host_no));
2381                 }
2382
2383                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2384
2385                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2386                             ha->host_no));
2387
2388                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2389                             &ha->dpc_flags))) {
2390
2391                                 rval = qla2x00_loop_resync(ha);
2392
2393                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2394                         }
2395
2396                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2397                             ha->host_no));
2398                 }
2399
2400                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2401
2402                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2403                             ha->host_no));
2404
2405                         qla2x00_rescan_fcports(ha);
2406
2407                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2408                             "end.\n",
2409                             ha->host_no));
2410                 }
2411
2412                 if (!ha->interrupts_on)
2413                         ha->isp_ops->enable_intrs(ha);
2414
2415                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2416                         ha->isp_ops->beacon_blink(ha);
2417
2418                 qla2x00_do_dpc_all_vps(ha);
2419
2420                 ha->dpc_active = 0;
2421         } /* End of while(1) */
2422
2423         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2424
2425         /*
2426          * Make sure that nobody tries to wake us up again.
2427          */
2428         ha->dpc_active = 0;
2429
2430         return 0;
2431 }
2432
2433 void
2434 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2435 {
2436         if (ha->dpc_thread)
2437                 wake_up_process(ha->dpc_thread);
2438 }
2439
2440 /*
2441 *  qla2x00_rst_aen
2442 *      Processes asynchronous reset.
2443 *
2444 * Input:
2445 *      ha  = adapter block pointer.
2446 */
2447 static void
2448 qla2x00_rst_aen(scsi_qla_host_t *ha)
2449 {
2450         if (ha->flags.online && !ha->flags.reset_active &&
2451             !atomic_read(&ha->loop_down_timer) &&
2452             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2453                 do {
2454                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2455
2456                         /*
2457                          * Issue marker command only when we are going to start
2458                          * the I/O.
2459                          */
2460                         ha->marker_needed = 1;
2461                 } while (!atomic_read(&ha->loop_down_timer) &&
2462                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2463         }
2464 }
2465
2466 static void
2467 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2468 {
2469         struct scsi_cmnd *cmd = sp->cmd;
2470
2471         if (sp->flags & SRB_DMA_VALID) {
2472                 scsi_dma_unmap(cmd);
2473                 sp->flags &= ~SRB_DMA_VALID;
2474         }
2475         CMD_SP(cmd) = NULL;
2476 }
2477
2478 void
2479 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2480 {
2481         struct scsi_cmnd *cmd = sp->cmd;
2482
2483         qla2x00_sp_free_dma(ha, sp);
2484
2485         mempool_free(sp, ha->srb_mempool);
2486
2487         cmd->scsi_done(cmd);
2488 }
2489
2490 /**************************************************************************
2491 *   qla2x00_timer
2492 *
2493 * Description:
2494 *   One second timer
2495 *
2496 * Context: Interrupt
2497 ***************************************************************************/
2498 void
2499 qla2x00_timer(scsi_qla_host_t *ha)
2500 {
2501         unsigned long   cpu_flags = 0;
2502         fc_port_t       *fcport;
2503         int             start_dpc = 0;
2504         int             index;
2505         srb_t           *sp;
2506         int             t;
2507         scsi_qla_host_t *pha = to_qla_parent(ha);
2508
2509         /*
2510          * Ports - Port down timer.
2511          *
2512          * Whenever, a port is in the LOST state we start decrementing its port
2513          * down timer every second until it reaches zero. Once  it reaches zero
2514          * the port it marked DEAD.
2515          */
2516         t = 0;
2517         list_for_each_entry(fcport, &ha->fcports, list) {
2518                 if (fcport->port_type != FCT_TARGET)
2519                         continue;
2520
2521                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2522
2523                         if (atomic_read(&fcport->port_down_timer) == 0)
2524                                 continue;
2525
2526                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2527                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2528
2529                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2530                             "%d remaining\n",
2531                             ha->host_no,
2532                             t, atomic_read(&fcport->port_down_timer)));
2533                 }
2534                 t++;
2535         } /* End of for fcport  */
2536
2537
2538         /* Loop down handler. */
2539         if (atomic_read(&ha->loop_down_timer) > 0 &&
2540             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2541
2542                 if (atomic_read(&ha->loop_down_timer) ==
2543                     ha->loop_down_abort_time) {
2544
2545                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2546                             "queues before time expire\n",
2547                             ha->host_no));
2548
2549                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2550                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2551
2552                         /* Schedule an ISP abort to return any tape commands. */
2553                         /* NPIV - scan physical port only */
2554                         if (!ha->parent) {
2555                                 spin_lock_irqsave(&ha->hardware_lock,
2556                                     cpu_flags);
2557                                 for (index = 1;
2558                                     index < MAX_OUTSTANDING_COMMANDS;
2559                                     index++) {
2560                                         fc_port_t *sfcp;
2561
2562                                         sp = ha->outstanding_cmds[index];
2563                                         if (!sp)
2564                                                 continue;
2565                                         sfcp = sp->fcport;
2566                                         if (!(sfcp->flags & FCF_TAPE_PRESENT))
2567                                                 continue;
2568
2569                                         set_bit(ISP_ABORT_NEEDED,
2570                                             &ha->dpc_flags);
2571                                         break;
2572                                 }
2573                                 spin_unlock_irqrestore(&ha->hardware_lock,
2574                                     cpu_flags);
2575                         }
2576                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2577                         start_dpc++;
2578                 }
2579
2580                 /* if the loop has been down for 4 minutes, reinit adapter */
2581                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2582                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2583                             "restarting queues.\n",
2584                             ha->host_no));
2585
2586                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2587                         start_dpc++;
2588
2589                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2590                                 DEBUG(printk("scsi(%ld): Loop down - "
2591                                     "aborting ISP.\n",
2592                                     ha->host_no));
2593                                 qla_printk(KERN_WARNING, ha,
2594                                     "Loop down - aborting ISP.\n");
2595
2596                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2597                         }
2598                 }
2599                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2600                     ha->host_no,
2601                     atomic_read(&ha->loop_down_timer)));
2602         }
2603
2604         /* Check if beacon LED needs to be blinked */
2605         if (ha->beacon_blink_led == 1) {
2606                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2607                 start_dpc++;
2608         }
2609
2610         /* Schedule the DPC routine if needed */
2611         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2612             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2613             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2614             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2615             start_dpc ||
2616             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2617             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2618             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2619             test_bit(VP_DPC_NEEDED, &ha->dpc_flags) ||
2620             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2621                 qla2xxx_wake_dpc(pha);
2622
2623         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2624 }
2625
2626 /* Firmware interface routines. */
2627
2628 #define FW_BLOBS        6
2629 #define FW_ISP21XX      0
2630 #define FW_ISP22XX      1
2631 #define FW_ISP2300      2
2632 #define FW_ISP2322      3
2633 #define FW_ISP24XX      4
2634 #define FW_ISP25XX      5
2635
2636 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2637 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2638 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2639 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2640 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2641 #define FW_FILE_ISP25XX "ql2500_fw.bin"
2642
2643 static DECLARE_MUTEX(qla_fw_lock);
2644
2645 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2646         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2647         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2648         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2649         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2650         { .name = FW_FILE_ISP24XX, },
2651         { .name = FW_FILE_ISP25XX, },
2652 };
2653
2654 struct fw_blob *
2655 qla2x00_request_firmware(scsi_qla_host_t *ha)
2656 {
2657         struct fw_blob *blob;
2658
2659         blob = NULL;
2660         if (IS_QLA2100(ha)) {
2661                 blob = &qla_fw_blobs[FW_ISP21XX];
2662         } else if (IS_QLA2200(ha)) {
2663                 blob = &qla_fw_blobs[FW_ISP22XX];
2664         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2665                 blob = &qla_fw_blobs[FW_ISP2300];
2666         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2667                 blob = &qla_fw_blobs[FW_ISP2322];
2668         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2669                 blob = &qla_fw_blobs[FW_ISP24XX];
2670         } else if (IS_QLA25XX(ha)) {
2671                 blob = &qla_fw_blobs[FW_ISP25XX];
2672         }
2673
2674         down(&qla_fw_lock);
2675         if (blob->fw)
2676                 goto out;
2677
2678         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2679                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2680                     "(%s).\n", ha->host_no, blob->name));
2681                 blob->fw = NULL;
2682                 blob = NULL;
2683                 goto out;
2684         }
2685
2686 out:
2687         up(&qla_fw_lock);
2688         return blob;
2689 }
2690
2691 static void
2692 qla2x00_release_firmware(void)
2693 {
2694         int idx;
2695
2696         down(&qla_fw_lock);
2697         for (idx = 0; idx < FW_BLOBS; idx++)
2698                 if (qla_fw_blobs[idx].fw)
2699                         release_firmware(qla_fw_blobs[idx].fw);
2700         up(&qla_fw_lock);
2701 }
2702
2703 static pci_ers_result_t
2704 qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2705 {
2706         switch (state) {
2707         case pci_channel_io_normal:
2708                 return PCI_ERS_RESULT_CAN_RECOVER;
2709         case pci_channel_io_frozen:
2710                 pci_disable_device(pdev);
2711                 return PCI_ERS_RESULT_NEED_RESET;
2712         case pci_channel_io_perm_failure:
2713                 qla2x00_remove_one(pdev);
2714                 return PCI_ERS_RESULT_DISCONNECT;
2715         }
2716         return PCI_ERS_RESULT_NEED_RESET;
2717 }
2718
2719 static pci_ers_result_t
2720 qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
2721 {
2722         int risc_paused = 0;
2723         uint32_t stat;
2724         unsigned long flags;
2725         scsi_qla_host_t *ha = pci_get_drvdata(pdev);
2726         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2727         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
2728
2729         spin_lock_irqsave(&ha->hardware_lock, flags);
2730         if (IS_QLA2100(ha) || IS_QLA2200(ha)){
2731                 stat = RD_REG_DWORD(&reg->hccr);
2732                 if (stat & HCCR_RISC_PAUSE)
2733                         risc_paused = 1;
2734         } else if (IS_QLA23XX(ha)) {
2735                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
2736                 if (stat & HSR_RISC_PAUSED)
2737                         risc_paused = 1;
2738         } else if (IS_FWI2_CAPABLE(ha)) {
2739                 stat = RD_REG_DWORD(&reg24->host_status);
2740                 if (stat & HSRX_RISC_PAUSED)
2741                         risc_paused = 1;
2742         }
2743         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2744
2745         if (risc_paused) {
2746                 qla_printk(KERN_INFO, ha, "RISC paused -- mmio_enabled, "
2747                     "Dumping firmware!\n");
2748                 ha->isp_ops->fw_dump(ha, 0);
2749
2750                 return PCI_ERS_RESULT_NEED_RESET;
2751         } else
2752                 return PCI_ERS_RESULT_RECOVERED;
2753 }
2754
2755 static pci_ers_result_t
2756 qla2xxx_pci_slot_reset(struct pci_dev *pdev)
2757 {
2758         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
2759         scsi_qla_host_t *ha = pci_get_drvdata(pdev);
2760         int rc;
2761
2762         if (ha->mem_only)
2763                 rc = pci_enable_device_mem(pdev);
2764         else
2765                 rc = pci_enable_device(pdev);
2766
2767         if (rc) {
2768                 qla_printk(KERN_WARNING, ha,
2769                     "Can't re-enable PCI device after reset.\n");
2770
2771                 return ret;
2772         }
2773         pci_set_master(pdev);
2774
2775         if (ha->isp_ops->pci_config(ha))
2776                 return ret;
2777
2778         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2779         if (qla2x00_abort_isp(ha)== QLA_SUCCESS)
2780                 ret =  PCI_ERS_RESULT_RECOVERED;
2781         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2782
2783         return ret;
2784 }
2785
2786 static void
2787 qla2xxx_pci_resume(struct pci_dev *pdev)
2788 {
2789         scsi_qla_host_t *ha = pci_get_drvdata(pdev);
2790         int ret;
2791
2792         ret = qla2x00_wait_for_hba_online(ha);
2793         if (ret != QLA_SUCCESS) {
2794                 qla_printk(KERN_ERR, ha,
2795                     "the device failed to resume I/O "
2796                     "from slot/link_reset");
2797         }
2798         pci_cleanup_aer_uncorrect_error_status(pdev);
2799 }
2800
2801 static struct pci_error_handlers qla2xxx_err_handler = {
2802         .error_detected = qla2xxx_pci_error_detected,
2803         .mmio_enabled = qla2xxx_pci_mmio_enabled,
2804         .slot_reset = qla2xxx_pci_slot_reset,
2805         .resume = qla2xxx_pci_resume,
2806 };
2807
2808 static struct pci_device_id qla2xxx_pci_tbl[] = {
2809         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2810         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2811         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2812         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2813         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2814         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2815         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2816         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2817         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2818         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2819         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2820         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) },
2821         { 0 },
2822 };
2823 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2824
2825 static struct pci_driver qla2xxx_pci_driver = {
2826         .name           = QLA2XXX_DRIVER_NAME,
2827         .driver         = {
2828                 .owner          = THIS_MODULE,
2829         },
2830         .id_table       = qla2xxx_pci_tbl,
2831         .probe          = qla2x00_probe_one,
2832         .remove         = qla2x00_remove_one,
2833         .err_handler    = &qla2xxx_err_handler,
2834 };
2835
2836 /**
2837  * qla2x00_module_init - Module initialization.
2838  **/
2839 static int __init
2840 qla2x00_module_init(void)
2841 {
2842         int ret = 0;
2843
2844         /* Allocate cache for SRBs. */
2845         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2846             SLAB_HWCACHE_ALIGN, NULL);
2847         if (srb_cachep == NULL) {
2848                 printk(KERN_ERR
2849                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2850                 return -ENOMEM;
2851         }
2852
2853         /* Derive version string. */
2854         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2855         if (ql2xextended_error_logging)
2856                 strcat(qla2x00_version_str, "-debug");
2857
2858         qla2xxx_transport_template =
2859             fc_attach_transport(&qla2xxx_transport_functions);
2860         if (!qla2xxx_transport_template) {
2861                 kmem_cache_destroy(srb_cachep);
2862                 return -ENODEV;
2863         }
2864         qla2xxx_transport_vport_template =
2865             fc_attach_transport(&qla2xxx_transport_vport_functions);
2866         if (!qla2xxx_transport_vport_template) {
2867                 kmem_cache_destroy(srb_cachep);
2868                 fc_release_transport(qla2xxx_transport_template);
2869                 return -ENODEV;
2870         }
2871
2872         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2873         ret = pci_register_driver(&qla2xxx_pci_driver);
2874         if (ret) {
2875                 kmem_cache_destroy(srb_cachep);
2876                 fc_release_transport(qla2xxx_transport_template);
2877                 fc_release_transport(qla2xxx_transport_vport_template);
2878         }
2879         return ret;
2880 }
2881
2882 /**
2883  * qla2x00_module_exit - Module cleanup.
2884  **/
2885 static void __exit
2886 qla2x00_module_exit(void)
2887 {
2888         pci_unregister_driver(&qla2xxx_pci_driver);
2889         qla2x00_release_firmware();
2890         kmem_cache_destroy(srb_cachep);
2891         fc_release_transport(qla2xxx_transport_template);
2892         fc_release_transport(qla2xxx_transport_vport_template);
2893 }
2894
2895 module_init(qla2x00_module_init);
2896 module_exit(qla2x00_module_exit);
2897
2898 MODULE_AUTHOR("QLogic Corporation");
2899 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2900 MODULE_LICENSE("GPL");
2901 MODULE_VERSION(QLA2XXX_VERSION);
2902 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2903 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2904 MODULE_FIRMWARE(FW_FILE_ISP2300);
2905 MODULE_FIRMWARE(FW_FILE_ISP2322);
2906 MODULE_FIRMWARE(FW_FILE_ISP24XX);
2907 MODULE_FIRMWARE(FW_FILE_ISP25XX);