drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static 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_loop_reset(scsi_qla_host_t *ha);
 109 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 110
 111 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 112 static int qla2x00_change_queue_type(struct scsi_device *, int);
 113
 114 struct scsi_host_template qla2x00_driver_template = {
 115         .module                 = THIS_MODULE,
 116         .name                   = QLA2XXX_DRIVER_NAME,
 117         .queuecommand           = qla2x00_queuecommand,
 118
 119         .eh_abort_handler       = qla2xxx_eh_abort,
 120         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 121         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 122         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 123
 124         .slave_configure        = qla2xxx_slave_configure,
 125
 126         .slave_alloc            = qla2xxx_slave_alloc,
 127         .slave_destroy          = qla2xxx_slave_destroy,
 128         .scan_finished          = qla2xxx_scan_finished,
 129         .scan_start             = qla2xxx_scan_start,
 130         .change_queue_depth     = qla2x00_change_queue_depth,
 131         .change_queue_type      = qla2x00_change_queue_type,
 132         .this_id                = -1,
 133         .cmd_per_lun            = 3,
 134         .use_clustering         = ENABLE_CLUSTERING,
 135         .sg_tablesize           = SG_ALL,
 136
 137         /*
 138          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 139          * which equates to 0x800000 sectors.
 140          */
 141         .max_sectors            = 0xFFFF,
 142         .shost_attrs            = qla2x00_host_attrs,
 143 };
 144
 145 struct scsi_host_template qla24xx_driver_template = {
 146         .module                 = THIS_MODULE,
 147         .name                   = QLA2XXX_DRIVER_NAME,
 148         .queuecommand           = qla24xx_queuecommand,
 149
 150         .eh_abort_handler       = qla2xxx_eh_abort,
 151         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 152         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 153         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 154
 155         .slave_configure        = qla2xxx_slave_configure,
 156
 157         .slave_alloc            = qla2xxx_slave_alloc,
 158         .slave_destroy          = qla2xxx_slave_destroy,
 159         .scan_finished          = qla2xxx_scan_finished,
 160         .scan_start             = qla2xxx_scan_start,
 161         .change_queue_depth     = qla2x00_change_queue_depth,
 162         .change_queue_type      = qla2x00_change_queue_type,
 163         .this_id                = -1,
 164         .cmd_per_lun            = 3,
 165         .use_clustering         = ENABLE_CLUSTERING,
 166         .sg_tablesize           = SG_ALL,
 167
 168         .max_sectors            = 0xFFFF,
 169         .shost_attrs            = qla2x00_host_attrs,
 170 };
 171
 172 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 173 struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
 174
 175 /* TODO Convert to inlines
 176  *
 177  * Timer routines
 178  */
 179
 180 void qla2x00_timer(scsi_qla_host_t *);
 181
 182 __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 183     void *, unsigned long);
 184 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 185 __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 186
 187 __inline__ void
 188 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 189 {
 190         init_timer(&ha->timer);
 191         ha->timer.expires = jiffies + interval * HZ;
 192         ha->timer.data = (unsigned long)ha;
 193         ha->timer.function = (void (*)(unsigned long))func;
 194         add_timer(&ha->timer);
 195         ha->timer_active = 1;
 196 }
 197
 198 static inline void
 199 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 200 {
 201         mod_timer(&ha->timer, jiffies + interval * HZ);
 202 }
 203
 204 __inline__ void
 205 qla2x00_stop_timer(scsi_qla_host_t *ha)
 206 {
 207         del_timer_sync(&ha->timer);
 208         ha->timer_active = 0;
 209 }
 210
 211 static int qla2x00_do_dpc(void *data);
 212
 213 static void qla2x00_rst_aen(scsi_qla_host_t *);
 214
 215 uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 216 void qla2x00_mem_free(scsi_qla_host_t *ha);
 217 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 218 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 219 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 220 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 221
 222 /* -------------------------------------------------------------------------- */
 223
 224 static char *
 225 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 226 {
 227         static char *pci_bus_modes[] = {
 228                 "33", "66", "100", "133",
 229         };
 230         uint16_t pci_bus;
 231
 232         strcpy(str, "PCI");
 233         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 234         if (pci_bus) {
 235                 strcat(str, "-X (");
 236                 strcat(str, pci_bus_modes[pci_bus]);
 237         } else {
 238                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 239                 strcat(str, " (");
 240                 strcat(str, pci_bus_modes[pci_bus]);
 241         }
 242         strcat(str, " MHz)");
 243
 244         return (str);
 245 }
 246
 247 static char *
 248 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 249 {
 250         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 251         uint32_t pci_bus;
 252         int pcie_reg;
 253
 254         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 255         if (pcie_reg) {
 256                 char lwstr[6];
 257                 uint16_t pcie_lstat, lspeed, lwidth;
 258
 259                 pcie_reg += 0x12;
 260                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 261                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 262                 lwidth = (pcie_lstat &
 263                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 264
 265                 strcpy(str, "PCIe (");
 266                 if (lspeed == 1)
 267                         strcat(str, "2.5Gb/s ");
 268                 else if (lspeed == 2)
 269                         strcat(str, "5.0Gb/s ");
 270                 else
 271                         strcat(str, "<unknown> ");
 272                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 273                 strcat(str, lwstr);
 274
 275                 return str;
 276         }
 277
 278         strcpy(str, "PCI");
 279         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 280         if (pci_bus == 0 || pci_bus == 8) {
 281                 strcat(str, " (");
 282                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 283         } else {
 284                 strcat(str, "-X ");
 285                 if (pci_bus & BIT_2)
 286                         strcat(str, "Mode 2");
 287                 else
 288                         strcat(str, "Mode 1");
 289                 strcat(str, " (");
 290                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 291         }
 292         strcat(str, " MHz)");
 293
 294         return str;
 295 }
 296
 297 static char *
 298 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 299 {
 300         char un_str[10];
 301
 302         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 303             ha->fw_minor_version,
 304             ha->fw_subminor_version);
 305
 306         if (ha->fw_attributes & BIT_9) {
 307                 strcat(str, "FLX");
 308                 return (str);
 309         }
 310
 311         switch (ha->fw_attributes & 0xFF) {
 312         case 0x7:
 313                 strcat(str, "EF");
 314                 break;
 315         case 0x17:
 316                 strcat(str, "TP");
 317                 break;
 318         case 0x37:
 319                 strcat(str, "IP");
 320                 break;
 321         case 0x77:
 322                 strcat(str, "VI");
 323                 break;
 324         default:
 325                 sprintf(un_str, "(%x)", ha->fw_attributes);
 326                 strcat(str, un_str);
 327                 break;
 328         }
 329         if (ha->fw_attributes & 0x100)
 330                 strcat(str, "X");
 331
 332         return (str);
 333 }
 334
 335 static char *
 336 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 337 {
 338         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 339             ha->fw_minor_version,
 340             ha->fw_subminor_version);
 341
 342         if (ha->fw_attributes & BIT_0)
 343                 strcat(str, "[Class 2] ");
 344         if (ha->fw_attributes & BIT_1)
 345                 strcat(str, "[IP] ");
 346         if (ha->fw_attributes & BIT_2)
 347                 strcat(str, "[Multi-ID] ");
 348         if (ha->fw_attributes & BIT_3)
 349                 strcat(str, "[SB-2] ");
 350         if (ha->fw_attributes & BIT_4)
 351                 strcat(str, "[T10 CRC] ");
 352         if (ha->fw_attributes & BIT_5)
 353                 strcat(str, "[VI] ");
 354         if (ha->fw_attributes & BIT_13)
 355                 strcat(str, "[Experimental]");
 356         return str;
 357 }
 358
 359 static inline srb_t *
 360 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 361     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 362 {
 363         srb_t *sp;
 364
 365         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 366         if (!sp)
 367                 return sp;
 368
 369         sp->ha = ha;
 370         sp->fcport = fcport;
 371         sp->cmd = cmd;
 372         sp->flags = 0;
 373         CMD_SP(cmd) = (void *)sp;
 374         cmd->scsi_done = done;
 375
 376         return sp;
 377 }
 378
 379 static int
 380 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 381 {
 382         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 383         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 384         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 385         srb_t *sp;
 386         int rval;
 387
 388         rval = fc_remote_port_chkready(rport);
 389         if (rval) {
 390                 cmd->result = rval;
 391                 goto qc_fail_command;
 392         }
 393
 394         /* Close window on fcport/rport state-transitioning. */
 395         if (!*(fc_port_t **)rport->dd_data) {
 396                 cmd->result = DID_IMM_RETRY << 16;
 397                 goto qc_fail_command;
 398         }
 399
 400         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 401                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 402                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 403                         cmd->result = DID_NO_CONNECT << 16;
 404                         goto qc_fail_command;
 405                 }
 406                 goto qc_host_busy;
 407         }
 408
 409         spin_unlock_irq(ha->host->host_lock);
 410
 411         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 412         if (!sp)
 413                 goto qc_host_busy_lock;
 414
 415         rval = qla2x00_start_scsi(sp);
 416         if (rval != QLA_SUCCESS)
 417                 goto qc_host_busy_free_sp;
 418
 419         spin_lock_irq(ha->host->host_lock);
 420
 421         return 0;
 422
 423 qc_host_busy_free_sp:
 424         qla2x00_sp_free_dma(ha, sp);
 425         mempool_free(sp, ha->srb_mempool);
 426
 427 qc_host_busy_lock:
 428         spin_lock_irq(ha->host->host_lock);
 429
 430 qc_host_busy:
 431         return SCSI_MLQUEUE_HOST_BUSY;
 432
 433 qc_fail_command:
 434         done(cmd);
 435
 436         return 0;
 437 }
 438
 439
 440 static int
 441 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 442 {
 443         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 444         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 445         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 446         srb_t *sp;
 447         int rval;
 448         scsi_qla_host_t *pha = to_qla_parent(ha);
 449
 450         rval = fc_remote_port_chkready(rport);
 451         if (rval) {
 452                 cmd->result = rval;
 453                 goto qc24_fail_command;
 454         }
 455
 456         /* Close window on fcport/rport state-transitioning. */
 457         if (!*(fc_port_t **)rport->dd_data) {
 458                 cmd->result = DID_IMM_RETRY << 16;
 459                 goto qc24_fail_command;
 460         }
 461
 462         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 463                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 464                     atomic_read(&pha->loop_state) == LOOP_DEAD) {
 465                         cmd->result = DID_NO_CONNECT << 16;
 466                         goto qc24_fail_command;
 467                 }
 468                 goto qc24_host_busy;
 469         }
 470
 471         spin_unlock_irq(ha->host->host_lock);
 472
 473         sp = qla2x00_get_new_sp(pha, fcport, cmd, done);
 474         if (!sp)
 475                 goto qc24_host_busy_lock;
 476
 477         rval = qla24xx_start_scsi(sp);
 478         if (rval != QLA_SUCCESS)
 479                 goto qc24_host_busy_free_sp;
 480
 481         spin_lock_irq(ha->host->host_lock);
 482
 483         return 0;
 484
 485 qc24_host_busy_free_sp:
 486         qla2x00_sp_free_dma(pha, sp);
 487         mempool_free(sp, pha->srb_mempool);
 488
 489 qc24_host_busy_lock:
 490         spin_lock_irq(ha->host->host_lock);
 491
 492 qc24_host_busy:
 493         return SCSI_MLQUEUE_HOST_BUSY;
 494
 495 qc24_fail_command:
 496         done(cmd);
 497
 498         return 0;
 499 }
 500
 501
 502 /*
 503  * qla2x00_eh_wait_on_command
 504  *    Waits for the command to be returned by the Firmware for some
 505  *    max time.
 506  *
 507  * Input:
 508  *    ha = actual ha whose done queue will contain the command
 509  *            returned by firmware.
 510  *    cmd = Scsi Command to wait on.
 511  *    flag = Abort/Reset(Bus or Device Reset)
 512  *
 513  * Return:
 514  *    Not Found : 0
 515  *    Found : 1
 516  */
 517 static int
 518 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 519 {
 520 #define ABORT_POLLING_PERIOD    1000
 521 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 522         unsigned long wait_iter = ABORT_WAIT_ITER;
 523         int ret = QLA_SUCCESS;
 524
 525         while (CMD_SP(cmd)) {
 526                 msleep(ABORT_POLLING_PERIOD);
 527
 528                 if (--wait_iter)
 529                         break;
 530         }
 531         if (CMD_SP(cmd))
 532                 ret = QLA_FUNCTION_FAILED;
 533
 534         return ret;
 535 }
 536
 537 /*
 538  * qla2x00_wait_for_hba_online
 539  *    Wait till the HBA is online after going through
 540  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 541  *    finally HBA is disabled ie marked offline
 542  *
 543  * Input:
 544  *     ha - pointer to host adapter structure
 545  *
 546  * Note:
 547  *    Does context switching-Release SPIN_LOCK
 548  *    (if any) before calling this routine.
 549  *
 550  * Return:
 551  *    Success (Adapter is online) : 0
 552  *    Failed  (Adapter is offline/disabled) : 1
 553  */
 554 int
 555 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 556 {
 557         int             return_status;
 558         unsigned long   wait_online;
 559         scsi_qla_host_t *pha = to_qla_parent(ha);
 560
 561         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 562         while (((test_bit(ISP_ABORT_NEEDED, &pha->dpc_flags)) ||
 563             test_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags) ||
 564             test_bit(ISP_ABORT_RETRY, &pha->dpc_flags) ||
 565             pha->dpc_active) && time_before(jiffies, wait_online)) {
 566
 567                 msleep(1000);
 568         }
 569         if (pha->flags.online)
 570                 return_status = QLA_SUCCESS;
 571         else
 572                 return_status = QLA_FUNCTION_FAILED;
 573
 574         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 575
 576         return (return_status);
 577 }
 578
 579 /*
 580  * qla2x00_wait_for_loop_ready
 581  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 582  *    to be in LOOP_READY state.
 583  * Input:
 584  *     ha - pointer to host adapter structure
 585  *
 586  * Note:
 587  *    Does context switching-Release SPIN_LOCK
 588  *    (if any) before calling this routine.
 589  *
 590  *
 591  * Return:
 592  *    Success (LOOP_READY) : 0
 593  *    Failed  (LOOP_NOT_READY) : 1
 594  */
 595 static inline int
 596 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 597 {
 598         int      return_status = QLA_SUCCESS;
 599         unsigned long loop_timeout ;
 600         scsi_qla_host_t *pha = to_qla_parent(ha);
 601
 602         /* wait for 5 min at the max for loop to be ready */
 603         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 604
 605         while ((!atomic_read(&pha->loop_down_timer) &&
 606             atomic_read(&pha->loop_state) == LOOP_DOWN) ||
 607             atomic_read(&pha->loop_state) != LOOP_READY) {
 608                 if (atomic_read(&pha->loop_state) == LOOP_DEAD) {
 609                         return_status = QLA_FUNCTION_FAILED;
 610                         break;
 611                 }
 612                 msleep(1000);
 613                 if (time_after_eq(jiffies, loop_timeout)) {
 614                         return_status = QLA_FUNCTION_FAILED;
 615                         break;
 616                 }
 617         }
 618         return (return_status);
 619 }
 620
 621 static void
 622 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 623 {
 624         struct Scsi_Host *shost = cmnd->device->host;
 625         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 626         unsigned long flags;
 627
 628         spin_lock_irqsave(shost->host_lock, flags);
 629         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 630                 spin_unlock_irqrestore(shost->host_lock, flags);
 631                 msleep(1000);
 632                 spin_lock_irqsave(shost->host_lock, flags);
 633         }
 634         spin_unlock_irqrestore(shost->host_lock, flags);
 635         return;
 636 }
 637
 638 /**************************************************************************
 639 * qla2xxx_eh_abort
 640 *
 641 * Description:
 642 *    The abort function will abort the specified command.
 643 *
 644 * Input:
 645 *    cmd = Linux SCSI command packet to be aborted.
 646 *
 647 * Returns:
 648 *    Either SUCCESS or FAILED.
 649 *
 650 * Note:
 651 *    Only return FAILED if command not returned by firmware.
 652 **************************************************************************/
 653 static int
 654 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 655 {
 656         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 657         srb_t *sp;
 658         int ret, i;
 659         unsigned int id, lun;
 660         unsigned long serial;
 661         unsigned long flags;
 662         int wait = 0;
 663         scsi_qla_host_t *pha = to_qla_parent(ha);
 664
 665         qla2x00_block_error_handler(cmd);
 666
 667         if (!CMD_SP(cmd))
 668                 return SUCCESS;
 669
 670         ret = SUCCESS;
 671
 672         id = cmd->device->id;
 673         lun = cmd->device->lun;
 674         serial = cmd->serial_number;
 675
 676         /* Check active list for command command. */
 677         spin_lock_irqsave(&pha->hardware_lock, flags);
 678         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 679                 sp = pha->outstanding_cmds[i];
 680
 681                 if (sp == NULL)
 682                         continue;
 683
 684                 if (sp->cmd != cmd)
 685                         continue;
 686
 687                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 688                     __func__, ha->host_no, sp, serial));
 689                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 690
 691                 spin_unlock_irqrestore(&pha->hardware_lock, flags);
 692                 if (ha->isp_ops->abort_command(ha, sp)) {
 693                         DEBUG2(printk("%s(%ld): abort_command "
 694                             "mbx failed.\n", __func__, ha->host_no));
 695                 } else {
 696                         DEBUG3(printk("%s(%ld): abort_command "
 697                             "mbx success.\n", __func__, ha->host_no));
 698                         wait = 1;
 699                 }
 700                 spin_lock_irqsave(&pha->hardware_lock, flags);
 701
 702                 break;
 703         }
 704         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 705
 706         /* Wait for the command to be returned. */
 707         if (wait) {
 708                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 709                         qla_printk(KERN_ERR, ha,
 710                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 711                             "%x.\n", ha->host_no, id, lun, serial, ret);
 712                         ret = FAILED;
 713                 }
 714         }
 715
 716         qla_printk(KERN_INFO, ha,
 717             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 718             ha->host_no, id, lun, wait, serial, ret);
 719
 720         return ret;
 721 }
 722
 723 /**************************************************************************
 724 * qla2x00_eh_wait_for_pending_target_commands
 725 *
 726 * Description:
 727 *    Waits for all the commands to come back from the specified target.
 728 *
 729 * Input:
 730 *    ha - pointer to scsi_qla_host structure.
 731 *    t  - target
 732 * Returns:
 733 *    Either SUCCESS or FAILED.
 734 *
 735 * Note:
 736 **************************************************************************/
 737 static int
 738 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 739 {
 740         int     cnt;
 741         int     status;
 742         srb_t           *sp;
 743         struct scsi_cmnd *cmd;
 744         unsigned long flags;
 745         scsi_qla_host_t *pha = to_qla_parent(ha);
 746
 747         status = 0;
 748
 749         /*
 750          * Waiting for all commands for the designated target in the active
 751          * array
 752          */
 753         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 754                 spin_lock_irqsave(&pha->hardware_lock, flags);
 755                 sp = pha->outstanding_cmds[cnt];
 756                 if (sp) {
 757                         cmd = sp->cmd;
 758                         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 759                         if (cmd->device->id == t &&
 760                             ha->vp_idx == sp->ha->vp_idx) {
 761                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 762                                         status = 1;
 763                                         break;
 764                                 }
 765                         }
 766                 } else {
 767                         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 768                 }
 769         }
 770         return (status);
 771 }
 772
 773
 774 /**************************************************************************
 775 * qla2xxx_eh_device_reset
 776 *
 777 * Description:
 778 *    The device reset function will reset the target and abort any
 779 *    executing commands.
 780 *
 781 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 782 *          attempt to use this value, even if you determine it is
 783 *          non-null.
 784 *
 785 * Input:
 786 *    cmd = Linux SCSI command packet of the command that cause the
 787 *          bus device reset.
 788 *
 789 * Returns:
 790 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 791 *
 792 **************************************************************************/
 793 static int
 794 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 795 {
 796         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 797         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 798         int ret = FAILED;
 799         unsigned int id, lun;
 800         unsigned long serial;
 801
 802         qla2x00_block_error_handler(cmd);
 803
 804         id = cmd->device->id;
 805         lun = cmd->device->lun;
 806         serial = cmd->serial_number;
 807
 808         if (!fcport)
 809                 return ret;
 810
 811         qla_printk(KERN_INFO, ha,
 812             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 813
 814         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 815                 goto eh_dev_reset_done;
 816
 817         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 818                 if (qla2x00_device_reset(ha, fcport) == 0)
 819                         ret = SUCCESS;
 820
 821 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 822                 if (ret == SUCCESS) {
 823                         if (fcport->flags & FC_FABRIC_DEVICE) {
 824                                 ha->isp_ops->fabric_logout(ha, fcport->loop_id);
 825                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 826                         }
 827                 }
 828 #endif
 829         } else {
 830                 DEBUG2(printk(KERN_INFO
 831                     "%s failed: loop not ready\n",__func__));
 832         }
 833
 834         if (ret == FAILED) {
 835                 DEBUG3(printk("%s(%ld): device reset failed\n",
 836                     __func__, ha->host_no));
 837                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 838                     __func__);
 839
 840                 goto eh_dev_reset_done;
 841         }
 842
 843         /* Flush outstanding commands. */
 844         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 845                 ret = FAILED;
 846         if (ret == FAILED) {
 847                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 848                     __func__, ha->host_no));
 849                 qla_printk(KERN_INFO, ha,
 850                     "%s: failed while waiting for commands\n", __func__);
 851         } else
 852                 qla_printk(KERN_INFO, ha,
 853                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 854                     id, lun);
 855  eh_dev_reset_done:
 856         return ret;
 857 }
 858
 859 /**************************************************************************
 860 * qla2x00_eh_wait_for_pending_commands
 861 *
 862 * Description:
 863 *    Waits for all the commands to come back from the specified host.
 864 *
 865 * Input:
 866 *    ha - pointer to scsi_qla_host structure.
 867 *
 868 * Returns:
 869 *    1 : SUCCESS
 870 *    0 : FAILED
 871 *
 872 * Note:
 873 **************************************************************************/
 874 static int
 875 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 876 {
 877         int     cnt;
 878         int     status;
 879         srb_t           *sp;
 880         struct scsi_cmnd *cmd;
 881         unsigned long flags;
 882
 883         status = 1;
 884
 885         /*
 886          * Waiting for all commands for the designated target in the active
 887          * array
 888          */
 889         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 890                 spin_lock_irqsave(&ha->hardware_lock, flags);
 891                 sp = ha->outstanding_cmds[cnt];
 892                 if (sp) {
 893                         cmd = sp->cmd;
 894                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 895                         status = qla2x00_eh_wait_on_command(ha, cmd);
 896                         if (status == 0)
 897                                 break;
 898                 }
 899                 else {
 900                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 901                 }
 902         }
 903         return (status);
 904 }
 905
 906
 907 /**************************************************************************
 908 * qla2xxx_eh_bus_reset
 909 *
 910 * Description:
 911 *    The bus reset function will reset the bus and abort any executing
 912 *    commands.
 913 *
 914 * Input:
 915 *    cmd = Linux SCSI command packet of the command that cause the
 916 *          bus reset.
 917 *
 918 * Returns:
 919 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 920 *
 921 **************************************************************************/
 922 static int
 923 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 924 {
 925         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 926         scsi_qla_host_t *pha = to_qla_parent(ha);
 927         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 928         int ret = FAILED;
 929         unsigned int id, lun;
 930         unsigned long serial;
 931
 932         qla2x00_block_error_handler(cmd);
 933
 934         id = cmd->device->id;
 935         lun = cmd->device->lun;
 936         serial = cmd->serial_number;
 937
 938         if (!fcport)
 939                 return ret;
 940
 941         qla_printk(KERN_INFO, ha,
 942             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 943
 944         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 945                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 946                 goto eh_bus_reset_done;
 947         }
 948
 949         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 950                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 951                         ret = SUCCESS;
 952         }
 953         if (ret == FAILED)
 954                 goto eh_bus_reset_done;
 955
 956         /* Flush outstanding commands. */
 957         if (!qla2x00_eh_wait_for_pending_commands(pha))
 958                 ret = FAILED;
 959
 960 eh_bus_reset_done:
 961         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 962             (ret == FAILED) ? "failed" : "succeded");
 963
 964         return ret;
 965 }
 966
 967 /**************************************************************************
 968 * qla2xxx_eh_host_reset
 969 *
 970 * Description:
 971 *    The reset function will reset the Adapter.
 972 *
 973 * Input:
 974 *      cmd = Linux SCSI command packet of the command that cause the
 975 *            adapter reset.
 976 *
 977 * Returns:
 978 *      Either SUCCESS or FAILED.
 979 *
 980 * Note:
 981 **************************************************************************/
 982 static int
 983 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 984 {
 985         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 986         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 987         int ret = FAILED;
 988         unsigned int id, lun;
 989         unsigned long serial;
 990         scsi_qla_host_t *pha = to_qla_parent(ha);
 991
 992         qla2x00_block_error_handler(cmd);
 993
 994         id = cmd->device->id;
 995         lun = cmd->device->lun;
 996         serial = cmd->serial_number;
 997
 998         if (!fcport)
 999                 return ret;
1000
1001         qla_printk(KERN_INFO, ha,
1002             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
1003
1004         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1005                 goto eh_host_reset_lock;
1006
1007         /*
1008          * Fixme-may be dpc thread is active and processing
1009          * loop_resync,so wait a while for it to
1010          * be completed and then issue big hammer.Otherwise
1011          * it may cause I/O failure as big hammer marks the
1012          * devices as lost kicking of the port_down_timer
1013          * while dpc is stuck for the mailbox to complete.
1014          */
1015         qla2x00_wait_for_loop_ready(ha);
1016         set_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1017         if (qla2x00_abort_isp(pha)) {
1018                 clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1019                 /* failed. schedule dpc to try */
1020                 set_bit(ISP_ABORT_NEEDED, &pha->dpc_flags);
1021
1022                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1023                         goto eh_host_reset_lock;
1024         }
1025         clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1026
1027         /* Waiting for our command in done_queue to be returned to OS.*/
1028         if (qla2x00_eh_wait_for_pending_commands(pha))
1029                 ret = SUCCESS;
1030
1031         if (ha->parent)
1032                 qla2x00_vp_abort_isp(ha);
1033
1034 eh_host_reset_lock:
1035         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1036             (ret == FAILED) ? "failed" : "succeded");
1037
1038         return ret;
1039 }
1040
1041 /*
1042 * qla2x00_loop_reset
1043 *      Issue loop reset.
1044 *
1045 * Input:
1046 *      ha = adapter block pointer.
1047 *
1048 * Returns:
1049 *      0 = success
1050 */
1051 static int
1052 qla2x00_loop_reset(scsi_qla_host_t *ha)
1053 {
1054         int ret;
1055         struct fc_port *fcport;
1056
1057         if (ha->flags.enable_lip_full_login) {
1058                 ret = qla2x00_full_login_lip(ha);
1059                 if (ret != QLA_SUCCESS) {
1060                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1061                             "full_login_lip=%d.\n", __func__, ha->host_no,
1062                             ret));
1063                 }
1064                 atomic_set(&ha->loop_state, LOOP_DOWN);
1065                 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
1066                 qla2x00_mark_all_devices_lost(ha, 0);
1067                 qla2x00_wait_for_loop_ready(ha);
1068         }
1069
1070         if (ha->flags.enable_lip_reset) {
1071                 ret = qla2x00_lip_reset(ha);
1072                 if (ret != QLA_SUCCESS) {
1073                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1074                             "lip_reset=%d.\n", __func__, ha->host_no, ret));
1075                 }
1076                 qla2x00_wait_for_loop_ready(ha);
1077         }
1078
1079         if (ha->flags.enable_target_reset) {
1080                 list_for_each_entry(fcport, &ha->fcports, list) {
1081                         if (fcport->port_type != FCT_TARGET)
1082                                 continue;
1083
1084                         ret = qla2x00_device_reset(ha, fcport);
1085                         if (ret != QLA_SUCCESS) {
1086                                 DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1087                                     "target_reset=%d d_id=%x.\n", __func__,
1088                                     ha->host_no, ret, fcport->d_id.b24));
1089                         }
1090                 }
1091         }
1092
1093         /* Issue marker command only when we are going to start the I/O */
1094         ha->marker_needed = 1;
1095
1096         return QLA_SUCCESS;
1097 }
1098
1099 /*
1100  * qla2x00_device_reset
1101  *      Issue bus device reset message to the target.
1102  *
1103  * Input:
1104  *      ha = adapter block pointer.
1105  *      t = SCSI ID.
1106  *      TARGET_QUEUE_LOCK must be released.
1107  *      ADAPTER_STATE_LOCK must be released.
1108  *
1109  * Context:
1110  *      Kernel context.
1111  */
1112 static int
1113 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1114 {
1115         /* Abort Target command will clear Reservation */
1116         return ha->isp_ops->abort_target(reset_fcport);
1117 }
1118
1119 static int
1120 qla2xxx_slave_alloc(struct scsi_device *sdev)
1121 {
1122         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1123
1124         if (!rport || fc_remote_port_chkready(rport))
1125                 return -ENXIO;
1126
1127         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1128
1129         return 0;
1130 }
1131
1132 static int
1133 qla2xxx_slave_configure(struct scsi_device *sdev)
1134 {
1135         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1136         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1137
1138         if (sdev->tagged_supported)
1139                 scsi_activate_tcq(sdev, ha->max_q_depth);
1140         else
1141                 scsi_deactivate_tcq(sdev, ha->max_q_depth);
1142
1143         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1144
1145         return 0;
1146 }
1147
1148 static void
1149 qla2xxx_slave_destroy(struct scsi_device *sdev)
1150 {
1151         sdev->hostdata = NULL;
1152 }
1153
1154 static int
1155 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1156 {
1157         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1158         return sdev->queue_depth;
1159 }
1160
1161 static int
1162 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1163 {
1164         if (sdev->tagged_supported) {
1165                 scsi_set_tag_type(sdev, tag_type);
1166                 if (tag_type)
1167                         scsi_activate_tcq(sdev, sdev->queue_depth);
1168                 else
1169                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1170         } else
1171                 tag_type = 0;
1172
1173         return tag_type;
1174 }
1175
1176 /**
1177  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1178  * @ha: HA context
1179  *
1180  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1181  * supported addressing method.
1182  */
1183 static void
1184 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1185 {
1186         /* Assume a 32bit DMA mask. */
1187         ha->flags.enable_64bit_addressing = 0;
1188
1189         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1190                 /* Any upper-dword bits set? */
1191                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1192                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1193                         /* Ok, a 64bit DMA mask is applicable. */
1194                         ha->flags.enable_64bit_addressing = 1;
1195                         ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
1196                         ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
1197                         return;
1198                 }
1199         }
1200
1201         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1202         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1203 }
1204
1205 static void
1206 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1207 {
1208         unsigned long flags = 0;
1209         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1210
1211         spin_lock_irqsave(&ha->hardware_lock, flags);
1212         ha->interrupts_on = 1;
1213         /* enable risc and host interrupts */
1214         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1215         RD_REG_WORD(&reg->ictrl);
1216         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1217
1218 }
1219
1220 static void
1221 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1222 {
1223         unsigned long flags = 0;
1224         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1225
1226         spin_lock_irqsave(&ha->hardware_lock, flags);
1227         ha->interrupts_on = 0;
1228         /* disable risc and host interrupts */
1229         WRT_REG_WORD(&reg->ictrl, 0);
1230         RD_REG_WORD(&reg->ictrl);
1231         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1232 }
1233
1234 static void
1235 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1236 {
1237         unsigned long flags = 0;
1238         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1239
1240         spin_lock_irqsave(&ha->hardware_lock, flags);
1241         ha->interrupts_on = 1;
1242         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1243         RD_REG_DWORD(&reg->ictrl);
1244         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1245 }
1246
1247 static void
1248 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1249 {
1250         unsigned long flags = 0;
1251         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1252
1253         spin_lock_irqsave(&ha->hardware_lock, flags);
1254         ha->interrupts_on = 0;
1255         WRT_REG_DWORD(&reg->ictrl, 0);
1256         RD_REG_DWORD(&reg->ictrl);
1257         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1258 }
1259
1260 static struct isp_operations qla2100_isp_ops = {
1261         .pci_config             = qla2100_pci_config,
1262         .reset_chip             = qla2x00_reset_chip,
1263         .chip_diag              = qla2x00_chip_diag,
1264         .config_rings           = qla2x00_config_rings,
1265         .reset_adapter          = qla2x00_reset_adapter,
1266         .nvram_config           = qla2x00_nvram_config,
1267         .update_fw_options      = qla2x00_update_fw_options,
1268         .load_risc              = qla2x00_load_risc,
1269         .pci_info_str           = qla2x00_pci_info_str,
1270         .fw_version_str         = qla2x00_fw_version_str,
1271         .intr_handler           = qla2100_intr_handler,
1272         .enable_intrs           = qla2x00_enable_intrs,
1273         .disable_intrs          = qla2x00_disable_intrs,
1274         .abort_command          = qla2x00_abort_command,
1275         .abort_target           = qla2x00_abort_target,
1276         .fabric_login           = qla2x00_login_fabric,
1277         .fabric_logout          = qla2x00_fabric_logout,
1278         .calc_req_entries       = qla2x00_calc_iocbs_32,
1279         .build_iocbs            = qla2x00_build_scsi_iocbs_32,
1280         .prep_ms_iocb           = qla2x00_prep_ms_iocb,
1281         .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
1282         .read_nvram             = qla2x00_read_nvram_data,
1283         .write_nvram            = qla2x00_write_nvram_data,
1284         .fw_dump                = qla2100_fw_dump,
1285         .beacon_on              = NULL,
1286         .beacon_off             = NULL,
1287         .beacon_blink           = NULL,
1288         .read_optrom            = qla2x00_read_optrom_data,
1289         .write_optrom           = qla2x00_write_optrom_data,
1290         .get_flash_version      = qla2x00_get_flash_version,
1291 };
1292
1293 static struct isp_operations qla2300_isp_ops = {
1294         .pci_config             = qla2300_pci_config,
1295         .reset_chip             = qla2x00_reset_chip,
1296         .chip_diag              = qla2x00_chip_diag,
1297         .config_rings           = qla2x00_config_rings,
1298         .reset_adapter          = qla2x00_reset_adapter,
1299         .nvram_config           = qla2x00_nvram_config,
1300         .update_fw_options      = qla2x00_update_fw_options,
1301         .load_risc              = qla2x00_load_risc,
1302         .pci_info_str           = qla2x00_pci_info_str,
1303         .fw_version_str         = qla2x00_fw_version_str,
1304         .intr_handler           = qla2300_intr_handler,
1305         .enable_intrs           = qla2x00_enable_intrs,
1306         .disable_intrs          = qla2x00_disable_intrs,
1307         .abort_command          = qla2x00_abort_command,
1308         .abort_target           = qla2x00_abort_target,
1309         .fabric_login           = qla2x00_login_fabric,
1310         .fabric_logout          = qla2x00_fabric_logout,
1311         .calc_req_entries       = qla2x00_calc_iocbs_32,
1312         .build_iocbs            = qla2x00_build_scsi_iocbs_32,
1313         .prep_ms_iocb           = qla2x00_prep_ms_iocb,
1314         .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
1315         .read_nvram             = qla2x00_read_nvram_data,
1316         .write_nvram            = qla2x00_write_nvram_data,
1317         .fw_dump                = qla2300_fw_dump,
1318         .beacon_on              = qla2x00_beacon_on,
1319         .beacon_off             = qla2x00_beacon_off,
1320         .beacon_blink           = qla2x00_beacon_blink,
1321         .read_optrom            = qla2x00_read_optrom_data,
1322         .write_optrom           = qla2x00_write_optrom_data,
1323         .get_flash_version      = qla2x00_get_flash_version,
1324 };
1325
1326 static struct isp_operations qla24xx_isp_ops = {
1327         .pci_config             = qla24xx_pci_config,
1328         .reset_chip             = qla24xx_reset_chip,
1329         .chip_diag              = qla24xx_chip_diag,
1330         .config_rings           = qla24xx_config_rings,
1331         .reset_adapter          = qla24xx_reset_adapter,
1332         .nvram_config           = qla24xx_nvram_config,
1333         .update_fw_options      = qla24xx_update_fw_options,
1334         .load_risc              = qla24xx_load_risc,
1335         .pci_info_str           = qla24xx_pci_info_str,
1336         .fw_version_str         = qla24xx_fw_version_str,
1337         .intr_handler           = qla24xx_intr_handler,
1338         .enable_intrs           = qla24xx_enable_intrs,
1339         .disable_intrs          = qla24xx_disable_intrs,
1340         .abort_command          = qla24xx_abort_command,
1341         .abort_target           = qla24xx_abort_target,
1342         .fabric_login           = qla24xx_login_fabric,
1343         .fabric_logout          = qla24xx_fabric_logout,
1344         .calc_req_entries       = NULL,
1345         .build_iocbs            = NULL,
1346         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1347         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1348         .read_nvram             = qla24xx_read_nvram_data,
1349         .write_nvram            = qla24xx_write_nvram_data,
1350         .fw_dump                = qla24xx_fw_dump,
1351         .beacon_on              = qla24xx_beacon_on,
1352         .beacon_off             = qla24xx_beacon_off,
1353         .beacon_blink           = qla24xx_beacon_blink,
1354         .read_optrom            = qla24xx_read_optrom_data,
1355         .write_optrom           = qla24xx_write_optrom_data,
1356         .get_flash_version      = qla24xx_get_flash_version,
1357 };
1358
1359 static struct isp_operations qla25xx_isp_ops = {
1360         .pci_config             = qla25xx_pci_config,
1361         .reset_chip             = qla24xx_reset_chip,
1362         .chip_diag              = qla24xx_chip_diag,
1363         .config_rings           = qla24xx_config_rings,
1364         .reset_adapter          = qla24xx_reset_adapter,
1365         .nvram_config           = qla24xx_nvram_config,
1366         .update_fw_options      = qla24xx_update_fw_options,
1367         .load_risc              = qla24xx_load_risc,
1368         .pci_info_str           = qla24xx_pci_info_str,
1369         .fw_version_str         = qla24xx_fw_version_str,
1370         .intr_handler           = qla24xx_intr_handler,
1371         .enable_intrs           = qla24xx_enable_intrs,
1372         .disable_intrs          = qla24xx_disable_intrs,
1373         .abort_command          = qla24xx_abort_command,
1374         .abort_target           = qla24xx_abort_target,
1375         .fabric_login           = qla24xx_login_fabric,
1376         .fabric_logout          = qla24xx_fabric_logout,
1377         .calc_req_entries       = NULL,
1378         .build_iocbs            = NULL,
1379         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1380         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1381         .read_nvram             = qla25xx_read_nvram_data,
1382         .write_nvram            = qla25xx_write_nvram_data,
1383         .fw_dump                = qla25xx_fw_dump,
1384         .beacon_on              = qla24xx_beacon_on,
1385         .beacon_off             = qla24xx_beacon_off,
1386         .beacon_blink           = qla24xx_beacon_blink,
1387         .read_optrom            = qla24xx_read_optrom_data,
1388         .write_optrom           = qla24xx_write_optrom_data,
1389         .get_flash_version      = qla24xx_get_flash_version,
1390 };
1391
1392 static inline void
1393 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1394 {
1395         ha->device_type = DT_EXTENDED_IDS;
1396         switch (ha->pdev->device) {
1397         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1398                 ha->device_type |= DT_ISP2100;
1399                 ha->device_type &= ~DT_EXTENDED_IDS;
1400                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1401                 break;
1402         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1403                 ha->device_type |= DT_ISP2200;
1404                 ha->device_type &= ~DT_EXTENDED_IDS;
1405                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1406                 break;
1407         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1408                 ha->device_type |= DT_ISP2300;
1409                 ha->device_type |= DT_ZIO_SUPPORTED;
1410                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1411                 break;
1412         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1413                 ha->device_type |= DT_ISP2312;
1414                 ha->device_type |= DT_ZIO_SUPPORTED;
1415                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1416                 break;
1417         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1418                 ha->device_type |= DT_ISP2322;
1419                 ha->device_type |= DT_ZIO_SUPPORTED;
1420                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1421                     ha->pdev->subsystem_device == 0x0170)
1422                         ha->device_type |= DT_OEM_001;
1423                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1424                 break;
1425         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1426                 ha->device_type |= DT_ISP6312;
1427                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1428                 break;
1429         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1430                 ha->device_type |= DT_ISP6322;
1431                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1432                 break;
1433         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1434                 ha->device_type |= DT_ISP2422;
1435                 ha->device_type |= DT_ZIO_SUPPORTED;
1436                 ha->device_type |= DT_FWI2;
1437                 ha->device_type |= DT_IIDMA;
1438                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1439                 break;
1440         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1441                 ha->device_type |= DT_ISP2432;
1442                 ha->device_type |= DT_ZIO_SUPPORTED;
1443                 ha->device_type |= DT_FWI2;
1444                 ha->device_type |= DT_IIDMA;
1445                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1446                 break;
1447         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1448                 ha->device_type |= DT_ISP5422;
1449                 ha->device_type |= DT_FWI2;
1450                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1451                 break;
1452         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1453                 ha->device_type |= DT_ISP5432;
1454                 ha->device_type |= DT_FWI2;
1455                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1456                 break;
1457         case PCI_DEVICE_ID_QLOGIC_ISP2532:
1458                 ha->device_type |= DT_ISP2532;
1459                 ha->device_type |= DT_ZIO_SUPPORTED;
1460                 ha->device_type |= DT_FWI2;
1461                 ha->device_type |= DT_IIDMA;
1462                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1463                 break;
1464         }
1465 }
1466
1467 static int
1468 qla2x00_iospace_config(scsi_qla_host_t *ha)
1469 {
1470         unsigned long   pio, pio_len, pio_flags;
1471         unsigned long   mmio, mmio_len, mmio_flags;
1472
1473         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1474         pio = pci_resource_start(ha->pdev, 0);
1475         pio_len = pci_resource_len(ha->pdev, 0);
1476         pio_flags = pci_resource_flags(ha->pdev, 0);
1477         if (pio_flags & IORESOURCE_IO) {
1478                 if (pio_len < MIN_IOBASE_LEN) {
1479                         qla_printk(KERN_WARNING, ha,
1480                             "Invalid PCI I/O region size (%s)...\n",
1481                                 pci_name(ha->pdev));
1482                         pio = 0;
1483                 }
1484         } else {
1485                 qla_printk(KERN_WARNING, ha,
1486                     "region #0 not a PIO resource (%s)...\n",
1487                     pci_name(ha->pdev));
1488                 pio = 0;
1489         }
1490
1491         /* Use MMIO operations for all accesses. */
1492         mmio = pci_resource_start(ha->pdev, 1);
1493         mmio_len = pci_resource_len(ha->pdev, 1);
1494         mmio_flags = pci_resource_flags(ha->pdev, 1);
1495
1496         if (!(mmio_flags & IORESOURCE_MEM)) {
1497                 qla_printk(KERN_ERR, ha,
1498                     "region #0 not an MMIO resource (%s), aborting\n",
1499                     pci_name(ha->pdev));
1500                 goto iospace_error_exit;
1501         }
1502         if (mmio_len < MIN_IOBASE_LEN) {
1503                 qla_printk(KERN_ERR, ha,
1504                     "Invalid PCI mem region size (%s), aborting\n",
1505                         pci_name(ha->pdev));
1506                 goto iospace_error_exit;
1507         }
1508
1509         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1510                 qla_printk(KERN_WARNING, ha,
1511                     "Failed to reserve PIO/MMIO regions (%s)\n",
1512                     pci_name(ha->pdev));
1513
1514                 goto iospace_error_exit;
1515         }
1516
1517         ha->pio_address = pio;
1518         ha->pio_length = pio_len;
1519         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1520         if (!ha->iobase) {
1521                 qla_printk(KERN_ERR, ha,
1522                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1523
1524                 goto iospace_error_exit;
1525         }
1526
1527         return (0);
1528
1529 iospace_error_exit:
1530         return (-ENOMEM);
1531 }
1532
1533 static void
1534 qla2xxx_scan_start(struct Scsi_Host *shost)
1535 {
1536         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1537
1538         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1539         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1540         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1541 }
1542
1543 static int
1544 qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
1545 {
1546         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1547
1548         if (!ha->host)
1549                 return 1;
1550         if (time > ha->loop_reset_delay * HZ)
1551                 return 1;
1552
1553         return atomic_read(&ha->loop_state) == LOOP_READY;
1554 }
1555
1556 /*
1557  * PCI driver interface
1558  */
1559 static int __devinit
1560 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1561 {
1562         int     ret = -ENODEV;
1563         device_reg_t __iomem *reg;
1564         struct Scsi_Host *host;
1565         scsi_qla_host_t *ha;
1566         unsigned long   flags = 0;
1567         char pci_info[20];
1568         char fw_str[30];
1569         struct scsi_host_template *sht;
1570
1571         if (pci_enable_device(pdev))
1572                 goto probe_out;
1573
1574         sht = &qla2x00_driver_template;
1575         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1576             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
1577             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
1578             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 ||
1579             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532)
1580                 sht = &qla24xx_driver_template;
1581         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1582         if (host == NULL) {
1583                 printk(KERN_WARNING
1584                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1585                 goto probe_disable_device;
1586         }
1587
1588         /* Clear our data area */
1589         ha = (scsi_qla_host_t *)host->hostdata;
1590         memset(ha, 0, sizeof(scsi_qla_host_t));
1591
1592         ha->pdev = pdev;
1593         ha->host = host;
1594         ha->host_no = host->host_no;
1595         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1596         ha->parent = NULL;
1597
1598         /* Set ISP-type information. */
1599         qla2x00_set_isp_flags(ha);
1600
1601         /* Configure PCI I/O space */
1602         ret = qla2x00_iospace_config(ha);
1603         if (ret)
1604                 goto probe_failed;
1605
1606         qla_printk(KERN_INFO, ha,
1607             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1608             ha->iobase);
1609
1610         spin_lock_init(&ha->hardware_lock);
1611
1612         ha->prev_topology = 0;
1613         ha->init_cb_size = sizeof(init_cb_t);
1614         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER + ha->vp_idx;
1615         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1616         ha->optrom_size = OPTROM_SIZE_2300;
1617
1618         ha->max_q_depth = MAX_Q_DEPTH;
1619         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1620                 ha->max_q_depth = ql2xmaxqdepth;
1621
1622         /* Assign ISP specific operations. */
1623         if (IS_QLA2100(ha)) {
1624                 host->max_id = MAX_TARGETS_2100;
1625                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1626                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1627                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1628                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1629                 host->sg_tablesize = 32;
1630                 ha->gid_list_info_size = 4;
1631                 ha->isp_ops = &qla2100_isp_ops;
1632         } else if (IS_QLA2200(ha)) {
1633                 host->max_id = MAX_TARGETS_2200;
1634                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1635                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1636                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1637                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1638                 ha->gid_list_info_size = 4;
1639                 ha->isp_ops = &qla2100_isp_ops;
1640         } else if (IS_QLA23XX(ha)) {
1641                 host->max_id = MAX_TARGETS_2200;
1642                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1643                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1644                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1645                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1646                 ha->gid_list_info_size = 6;
1647                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1648                         ha->optrom_size = OPTROM_SIZE_2322;
1649                 ha->isp_ops = &qla2300_isp_ops;
1650         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1651                 host->max_id = MAX_TARGETS_2200;
1652                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1653                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1654                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1655                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1656                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1657                 ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
1658                 ha->gid_list_info_size = 8;
1659                 ha->optrom_size = OPTROM_SIZE_24XX;
1660                 ha->isp_ops = &qla24xx_isp_ops;
1661         } else if (IS_QLA25XX(ha)) {
1662                 host->max_id = MAX_TARGETS_2200;
1663                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1664                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1665                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1666                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1667                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1668                 ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
1669                 ha->gid_list_info_size = 8;
1670                 ha->optrom_size = OPTROM_SIZE_25XX;
1671                 ha->isp_ops = &qla25xx_isp_ops;
1672         }
1673         host->can_queue = ha->request_q_length + 128;
1674
1675         /* load the F/W, read paramaters, and init the H/W */
1676         ha->instance = num_hosts;
1677
1678         init_MUTEX(&ha->mbx_cmd_sem);
1679         init_MUTEX(&ha->vport_sem);
1680         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1681
1682         INIT_LIST_HEAD(&ha->list);
1683         INIT_LIST_HEAD(&ha->fcports);
1684         INIT_LIST_HEAD(&ha->vp_list);
1685
1686         set_bit(0, (unsigned long *) ha->vp_idx_map);
1687
1688         qla2x00_config_dma_addressing(ha);
1689         if (qla2x00_mem_alloc(ha)) {
1690                 qla_printk(KERN_WARNING, ha,
1691                     "[ERROR] Failed to allocate memory for adapter\n");
1692
1693                 ret = -ENOMEM;
1694                 goto probe_failed;
1695         }
1696
1697         if (qla2x00_initialize_adapter(ha)) {
1698                 qla_printk(KERN_WARNING, ha,
1699                     "Failed to initialize adapter\n");
1700
1701                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1702                     "Adapter flags %x.\n",
1703                     ha->host_no, ha->device_flags));
1704
1705                 ret = -ENODEV;
1706                 goto probe_failed;
1707         }
1708
1709         /*
1710          * Startup the kernel thread for this host adapter
1711          */
1712         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1713                         "%s_dpc", ha->host_str);
1714         if (IS_ERR(ha->dpc_thread)) {
1715                 qla_printk(KERN_WARNING, ha,
1716                     "Unable to start DPC thread!\n");
1717                 ret = PTR_ERR(ha->dpc_thread);
1718                 goto probe_failed;
1719         }
1720
1721         host->this_id = 255;
1722         host->cmd_per_lun = 3;
1723         host->unique_id = ha->instance;
1724         host->max_cmd_len = MAX_CMDSZ;
1725         host->max_channel = MAX_BUSES - 1;
1726         host->max_lun = MAX_LUNS;
1727         host->transportt = qla2xxx_transport_template;
1728
1729         ret = qla2x00_request_irqs(ha);
1730         if (ret)
1731                 goto probe_failed;
1732
1733         /* Initialized the timer */
1734         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1735
1736         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1737             ha->host_no, ha));
1738
1739         ha->isp_ops->disable_intrs(ha);
1740
1741         spin_lock_irqsave(&ha->hardware_lock, flags);
1742         reg = ha->iobase;
1743         if (IS_FWI2_CAPABLE(ha)) {
1744                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1745                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1746         } else {
1747                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1748                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1749                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1750
1751                 /* Enable proper parity */
1752                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1753                         if (IS_QLA2300(ha))
1754                                 /* SRAM parity */
1755                                 WRT_REG_WORD(&reg->isp.hccr,
1756                                     (HCCR_ENABLE_PARITY + 0x1));
1757                         else
1758                                 /* SRAM, Instruction RAM and GP RAM parity */
1759                                 WRT_REG_WORD(&reg->isp.hccr,
1760                                     (HCCR_ENABLE_PARITY + 0x7));
1761                 }
1762         }
1763         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1764
1765         ha->isp_ops->enable_intrs(ha);
1766
1767         pci_set_drvdata(pdev, ha);
1768
1769         ha->flags.init_done = 1;
1770         ha->flags.online = 1;
1771
1772         num_hosts++;
1773
1774         ret = scsi_add_host(host, &pdev->dev);
1775         if (ret)
1776                 goto probe_failed;
1777
1778         scsi_scan_host(host);
1779
1780         qla2x00_alloc_sysfs_attr(ha);
1781
1782         qla2x00_init_host_attr(ha);
1783
1784         qla_printk(KERN_INFO, ha, "\n"
1785             " QLogic Fibre Channel HBA Driver: %s\n"
1786             "  QLogic %s - %s\n"
1787             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1788             qla2x00_version_str, ha->model_number,
1789             ha->model_desc ? ha->model_desc: "", pdev->device,
1790             ha->isp_ops->pci_info_str(ha, pci_info), pci_name(pdev),
1791             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1792             ha->isp_ops->fw_version_str(ha, fw_str));
1793
1794         return 0;
1795
1796 probe_failed:
1797         qla2x00_free_device(ha);
1798
1799         scsi_host_put(host);
1800
1801 probe_disable_device:
1802         pci_disable_device(pdev);
1803
1804 probe_out:
1805         return ret;
1806 }
1807
1808 static void __devexit
1809 qla2x00_remove_one(struct pci_dev *pdev)
1810 {
1811         scsi_qla_host_t *ha;
1812
1813         ha = pci_get_drvdata(pdev);
1814
1815         qla2x00_free_sysfs_attr(ha);
1816
1817         fc_remove_host(ha->host);
1818
1819         scsi_remove_host(ha->host);
1820
1821         qla2x00_free_device(ha);
1822
1823         scsi_host_put(ha->host);
1824
1825         pci_disable_device(pdev);
1826         pci_set_drvdata(pdev, NULL);
1827 }
1828
1829 static void
1830 qla2x00_free_device(scsi_qla_host_t *ha)
1831 {
1832         /* Disable timer */
1833         if (ha->timer_active)
1834                 qla2x00_stop_timer(ha);
1835
1836         /* Kill the kernel thread for this host */
1837         if (ha->dpc_thread) {
1838                 struct task_struct *t = ha->dpc_thread;
1839
1840                 /*
1841                  * qla2xxx_wake_dpc checks for ->dpc_thread
1842                  * so we need to zero it out.
1843                  */
1844                 ha->dpc_thread = NULL;
1845                 kthread_stop(t);
1846         }
1847
1848         if (ha->eft)
1849                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1850
1851         ha->flags.online = 0;
1852
1853         /* Stop currently executing firmware. */
1854         qla2x00_try_to_stop_firmware(ha);
1855
1856         /* turn-off interrupts on the card */
1857         if (ha->interrupts_on)
1858                 ha->isp_ops->disable_intrs(ha);
1859
1860         qla2x00_mem_free(ha);
1861
1862         qla2x00_free_irqs(ha);
1863
1864         /* release io space registers  */
1865         if (ha->iobase)
1866                 iounmap(ha->iobase);
1867         pci_release_regions(ha->pdev);
1868 }
1869
1870 static inline void
1871 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1872     int defer)
1873 {
1874         unsigned long flags;
1875         struct fc_rport *rport;
1876
1877         if (!fcport->rport)
1878                 return;
1879
1880         rport = fcport->rport;
1881         if (defer) {
1882                 spin_lock_irqsave(&fcport->rport_lock, flags);
1883                 fcport->drport = rport;
1884                 fcport->rport = NULL;
1885                 *(fc_port_t **)rport->dd_data = NULL;
1886                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1887                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1888         } else {
1889                 spin_lock_irqsave(&fcport->rport_lock, flags);
1890                 fcport->rport = NULL;
1891                 *(fc_port_t **)rport->dd_data = NULL;
1892                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1893                 fc_remote_port_delete(rport);
1894         }
1895 }
1896
1897 /*
1898  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1899  *
1900  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1901  *
1902  * Return: None.
1903  *
1904  * Context:
1905  */
1906 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1907     int do_login, int defer)
1908 {
1909         if (atomic_read(&fcport->state) == FCS_ONLINE &&
1910             ha->vp_idx == fcport->vp_idx)
1911                 qla2x00_schedule_rport_del(ha, fcport, defer);
1912
1913         /*
1914          * We may need to retry the login, so don't change the state of the
1915          * port but do the retries.
1916          */
1917         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1918                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1919
1920         if (!do_login)
1921                 return;
1922
1923         if (fcport->login_retry == 0) {
1924                 fcport->login_retry = ha->login_retry_count;
1925                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1926
1927                 DEBUG(printk("scsi(%ld): Port login retry: "
1928                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1929                     "id = 0x%04x retry cnt=%d\n",
1930                     ha->host_no,
1931                     fcport->port_name[0],
1932                     fcport->port_name[1],
1933                     fcport->port_name[2],
1934                     fcport->port_name[3],
1935                     fcport->port_name[4],
1936                     fcport->port_name[5],
1937                     fcport->port_name[6],
1938                     fcport->port_name[7],
1939                     fcport->loop_id,
1940                     fcport->login_retry));
1941         }
1942 }
1943
1944 /*
1945  * qla2x00_mark_all_devices_lost
1946  *      Updates fcport state when device goes offline.
1947  *
1948  * Input:
1949  *      ha = adapter block pointer.
1950  *      fcport = port structure pointer.
1951  *
1952  * Return:
1953  *      None.
1954  *
1955  * Context:
1956  */
1957 void
1958 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1959 {
1960         fc_port_t *fcport;
1961         scsi_qla_host_t *pha = to_qla_parent(ha);
1962
1963         list_for_each_entry(fcport, &pha->fcports, list) {
1964                 if (ha->vp_idx != 0 && ha->vp_idx != fcport->vp_idx)
1965                         continue;
1966                 /*
1967                  * No point in marking the device as lost, if the device is
1968                  * already DEAD.
1969                  */
1970                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1971                         continue;
1972                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1973                         if (defer)
1974                                 qla2x00_schedule_rport_del(ha, fcport, defer);
1975                         else if (ha->vp_idx == fcport->vp_idx)
1976                                 qla2x00_schedule_rport_del(ha, fcport, defer);
1977                 }
1978                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1979         }
1980
1981         if (defer)
1982                 qla2xxx_wake_dpc(ha);
1983 }
1984
1985 /*
1986 * qla2x00_mem_alloc
1987 *      Allocates adapter memory.
1988 *
1989 * Returns:
1990 *      0  = success.
1991 *      1  = failure.
1992 */
1993 uint8_t
1994 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1995 {
1996         char    name[16];
1997         uint8_t   status = 1;
1998         int     retry= 10;
1999
2000         do {
2001                 /*
2002                  * This will loop only once if everything goes well, else some
2003                  * number of retries will be performed to get around a kernel
2004                  * bug where available mem is not allocated until after a
2005                  * little delay and a retry.
2006                  */
2007                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
2008                     (ha->request_q_length + 1) * sizeof(request_t),
2009                     &ha->request_dma, GFP_KERNEL);
2010                 if (ha->request_ring == NULL) {
2011                         qla_printk(KERN_WARNING, ha,
2012                             "Memory Allocation failed - request_ring\n");
2013
2014                         qla2x00_mem_free(ha);
2015                         msleep(100);
2016
2017                         continue;
2018                 }
2019
2020                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
2021                     (ha->response_q_length + 1) * sizeof(response_t),
2022                     &ha->response_dma, GFP_KERNEL);
2023                 if (ha->response_ring == NULL) {
2024                         qla_printk(KERN_WARNING, ha,
2025                             "Memory Allocation failed - response_ring\n");
2026
2027                         qla2x00_mem_free(ha);
2028                         msleep(100);
2029
2030                         continue;
2031                 }
2032
2033                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
2034                     &ha->gid_list_dma, GFP_KERNEL);
2035                 if (ha->gid_list == NULL) {
2036                         qla_printk(KERN_WARNING, ha,
2037                             "Memory Allocation failed - gid_list\n");
2038
2039                         qla2x00_mem_free(ha);
2040                         msleep(100);
2041
2042                         continue;
2043                 }
2044
2045                 /* get consistent memory allocated for init control block */
2046                 ha->init_cb = dma_alloc_coherent(&ha->pdev->dev,
2047                     ha->init_cb_size, &ha->init_cb_dma, GFP_KERNEL);
2048                 if (ha->init_cb == NULL) {
2049                         qla_printk(KERN_WARNING, ha,
2050                             "Memory Allocation failed - init_cb\n");
2051
2052                         qla2x00_mem_free(ha);
2053                         msleep(100);
2054
2055                         continue;
2056                 }
2057                 memset(ha->init_cb, 0, ha->init_cb_size);
2058
2059                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
2060                     ha->host_no);
2061                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
2062                     DMA_POOL_SIZE, 8, 0);
2063                 if (ha->s_dma_pool == NULL) {
2064                         qla_printk(KERN_WARNING, ha,
2065                             "Memory Allocation failed - s_dma_pool\n");
2066
2067                         qla2x00_mem_free(ha);
2068                         msleep(100);
2069
2070                         continue;
2071                 }
2072
2073                 if (qla2x00_allocate_sp_pool(ha)) {
2074                         qla_printk(KERN_WARNING, ha,
2075                             "Memory Allocation failed - "
2076                             "qla2x00_allocate_sp_pool()\n");
2077
2078                         qla2x00_mem_free(ha);
2079                         msleep(100);
2080
2081                         continue;
2082                 }
2083
2084                 /* Allocate memory for SNS commands */
2085                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
2086                         /* Get consistent memory allocated for SNS commands */
2087                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
2088                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
2089                             GFP_KERNEL);
2090                         if (ha->sns_cmd == NULL) {
2091                                 /* error */
2092                                 qla_printk(KERN_WARNING, ha,
2093                                     "Memory Allocation failed - sns_cmd\n");
2094
2095                                 qla2x00_mem_free(ha);
2096                                 msleep(100);
2097
2098                                 continue;
2099                         }
2100                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
2101                 } else {
2102                         /* Get consistent memory allocated for MS IOCB */
2103                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2104                             &ha->ms_iocb_dma);
2105                         if (ha->ms_iocb == NULL) {
2106                                 /* error */
2107                                 qla_printk(KERN_WARNING, ha,
2108                                     "Memory Allocation failed - ms_iocb\n");
2109
2110                                 qla2x00_mem_free(ha);
2111                                 msleep(100);
2112
2113                                 continue;
2114                         }
2115                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
2116
2117                         /*
2118                          * Get consistent memory allocated for CT SNS
2119                          * commands
2120                          */
2121                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2122                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2123                             GFP_KERNEL);
2124                         if (ha->ct_sns == NULL) {
2125                                 /* error */
2126                                 qla_printk(KERN_WARNING, ha,
2127                                     "Memory Allocation failed - ct_sns\n");
2128
2129                                 qla2x00_mem_free(ha);
2130                                 msleep(100);
2131
2132                                 continue;
2133                         }
2134                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2135
2136                         if (IS_FWI2_CAPABLE(ha)) {
2137                                 /*
2138                                  * Get consistent memory allocated for SFP
2139                                  * block.
2140                                  */
2141                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2142                                     GFP_KERNEL, &ha->sfp_data_dma);
2143                                 if (ha->sfp_data == NULL) {
2144                                         qla_printk(KERN_WARNING, ha,
2145                                             "Memory Allocation failed - "
2146                                             "sfp_data\n");
2147
2148                                         qla2x00_mem_free(ha);
2149                                         msleep(100);
2150
2151                                         continue;
2152                                 }
2153                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2154                         }
2155                 }
2156
2157                 /* Done all allocations without any error. */
2158                 status = 0;
2159
2160         } while (retry-- && status != 0);
2161
2162         if (status) {
2163                 printk(KERN_WARNING
2164                         "%s(): **** FAILED ****\n", __func__);
2165         }
2166
2167         return(status);
2168 }
2169
2170 /*
2171 * qla2x00_mem_free
2172 *      Frees all adapter allocated memory.
2173 *
2174 * Input:
2175 *      ha = adapter block pointer.
2176 */
2177 void
2178 qla2x00_mem_free(scsi_qla_host_t *ha)
2179 {
2180         struct list_head        *fcpl, *fcptemp;
2181         fc_port_t       *fcport;
2182
2183         if (ha == NULL) {
2184                 /* error */
2185                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2186                 return;
2187         }
2188
2189         /* free sp pool */
2190         qla2x00_free_sp_pool(ha);
2191
2192         if (ha->fw_dump) {
2193                 if (ha->eft)
2194                         dma_free_coherent(&ha->pdev->dev,
2195                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2196                 vfree(ha->fw_dump);
2197         }
2198
2199         if (ha->sns_cmd)
2200                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2201                     ha->sns_cmd, ha->sns_cmd_dma);
2202
2203         if (ha->ct_sns)
2204                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2205                     ha->ct_sns, ha->ct_sns_dma);
2206
2207         if (ha->sfp_data)
2208                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2209
2210         if (ha->ms_iocb)
2211                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2212
2213         if (ha->s_dma_pool)
2214                 dma_pool_destroy(ha->s_dma_pool);
2215
2216         if (ha->init_cb)
2217                 dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
2218                     ha->init_cb, ha->init_cb_dma);
2219
2220         if (ha->gid_list)
2221                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2222                     ha->gid_list_dma);
2223
2224         if (ha->response_ring)
2225                 dma_free_coherent(&ha->pdev->dev,
2226                     (ha->response_q_length + 1) * sizeof(response_t),
2227                     ha->response_ring, ha->response_dma);
2228
2229         if (ha->request_ring)
2230                 dma_free_coherent(&ha->pdev->dev,
2231                     (ha->request_q_length + 1) * sizeof(request_t),
2232                     ha->request_ring, ha->request_dma);
2233
2234         ha->eft = NULL;
2235         ha->eft_dma = 0;
2236         ha->sns_cmd = NULL;
2237         ha->sns_cmd_dma = 0;
2238         ha->ct_sns = NULL;
2239         ha->ct_sns_dma = 0;
2240         ha->ms_iocb = NULL;
2241         ha->ms_iocb_dma = 0;
2242         ha->init_cb = NULL;
2243         ha->init_cb_dma = 0;
2244
2245         ha->s_dma_pool = NULL;
2246
2247         ha->gid_list = NULL;
2248         ha->gid_list_dma = 0;
2249
2250         ha->response_ring = NULL;
2251         ha->response_dma = 0;
2252         ha->request_ring = NULL;
2253         ha->request_dma = 0;
2254
2255         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2256                 fcport = list_entry(fcpl, fc_port_t, list);
2257
2258                 /* fc ports */
2259                 list_del_init(&fcport->list);
2260                 kfree(fcport);
2261         }
2262         INIT_LIST_HEAD(&ha->fcports);
2263
2264         ha->fw_dump = NULL;
2265         ha->fw_dumped = 0;
2266         ha->fw_dump_reading = 0;
2267
2268         vfree(ha->optrom_buffer);
2269 }
2270
2271 /*
2272  * qla2x00_allocate_sp_pool
2273  *       This routine is called during initialization to allocate
2274  *       memory for local srb_t.
2275  *
2276  * Input:
2277  *       ha   = adapter block pointer.
2278  *
2279  * Context:
2280  *      Kernel context.
2281  */
2282 static int
2283 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2284 {
2285         int      rval;
2286
2287         rval = QLA_SUCCESS;
2288         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2289         if (ha->srb_mempool == NULL) {
2290                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2291                 rval = QLA_FUNCTION_FAILED;
2292         }
2293         return (rval);
2294 }
2295
2296 /*
2297  *  This routine frees all adapter allocated memory.
2298  *
2299  */
2300 static void
2301 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2302 {
2303         if (ha->srb_mempool) {
2304                 mempool_destroy(ha->srb_mempool);
2305                 ha->srb_mempool = NULL;
2306         }
2307 }
2308
2309 /**************************************************************************
2310 * qla2x00_do_dpc
2311 *   This kernel thread is a task that is schedule by the interrupt handler
2312 *   to perform the background processing for interrupts.
2313 *
2314 * Notes:
2315 * This task always run in the context of a kernel thread.  It
2316 * is kick-off by the driver's detect code and starts up
2317 * up one per adapter. It immediately goes to sleep and waits for
2318 * some fibre event.  When either the interrupt handler or
2319 * the timer routine detects a event it will one of the task
2320 * bits then wake us up.
2321 **************************************************************************/
2322 static int
2323 qla2x00_do_dpc(void *data)
2324 {
2325         int             rval;
2326         scsi_qla_host_t *ha;
2327         fc_port_t       *fcport;
2328         uint8_t         status;
2329         uint16_t        next_loopid;
2330
2331         ha = (scsi_qla_host_t *)data;
2332
2333         set_user_nice(current, -20);
2334
2335         while (!kthread_should_stop()) {
2336                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2337
2338                 set_current_state(TASK_INTERRUPTIBLE);
2339                 schedule();
2340                 __set_current_state(TASK_RUNNING);
2341
2342                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2343
2344                 /* Initialization not yet finished. Don't do anything yet. */
2345                 if (!ha->flags.init_done)
2346                         continue;
2347
2348                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2349
2350                 ha->dpc_active = 1;
2351
2352                 if (ha->flags.mbox_busy) {
2353                         ha->dpc_active = 0;
2354                         continue;
2355                 }
2356
2357                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2358
2359                         DEBUG(printk("scsi(%ld): dpc: sched "
2360                             "qla2x00_abort_isp ha = %p\n",
2361                             ha->host_no, ha));
2362                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2363                             &ha->dpc_flags))) {
2364
2365                                 if (qla2x00_abort_isp(ha)) {
2366                                         /* failed. retry later */
2367                                         set_bit(ISP_ABORT_NEEDED,
2368                                             &ha->dpc_flags);
2369                                 }
2370                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2371                         }
2372                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2373                             ha->host_no));
2374                 }
2375
2376                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2377                         qla2x00_update_fcports(ha);
2378
2379                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2380                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2381                             ha->host_no));
2382                         qla2x00_loop_reset(ha);
2383                 }
2384
2385                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2386                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2387
2388                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2389                             ha->host_no));
2390
2391                         qla2x00_rst_aen(ha);
2392                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2393                 }
2394
2395                 /* Retry each device up to login retry count */
2396                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2397                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2398                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2399
2400                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2401                             ha->host_no));
2402
2403                         next_loopid = 0;
2404                         list_for_each_entry(fcport, &ha->fcports, list) {
2405                                 /*
2406                                  * If the port is not ONLINE then try to login
2407                                  * to it if we haven't run out of retries.
2408                                  */
2409                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2410                                     fcport->login_retry) {
2411
2412                                         fcport->login_retry--;
2413                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2414                                                 if (fcport->flags &
2415                                                     FCF_TAPE_PRESENT)
2416                                                         ha->isp_ops->fabric_logout(
2417                                                             ha, fcport->loop_id,
2418                                                             fcport->d_id.b.domain,
2419                                                             fcport->d_id.b.area,
2420                                                             fcport->d_id.b.al_pa);
2421                                                 status = qla2x00_fabric_login(
2422                                                     ha, fcport, &next_loopid);
2423                                         } else
2424                                                 status =
2425                                                     qla2x00_local_device_login(
2426                                                         ha, fcport);
2427
2428                                         if (status == QLA_SUCCESS) {
2429                                                 fcport->old_loop_id = fcport->loop_id;
2430
2431                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2432                                                     ha->host_no, fcport->loop_id));
2433
2434                                                 qla2x00_update_fcport(ha,
2435                                                     fcport);
2436                                         } else if (status == 1) {
2437                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2438                                                 /* retry the login again */
2439                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2440                                                     ha->host_no,
2441                                                     fcport->login_retry, fcport->loop_id));
2442                                         } else {
2443                                                 fcport->login_retry = 0;
2444                                         }
2445                                 }
2446                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2447                                         break;
2448                         }
2449                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2450                             ha->host_no));
2451                 }
2452
2453                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2454                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2455
2456                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2457                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2458                             ha->host_no));
2459
2460                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2461
2462                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2463                             ha->host_no));
2464                 }
2465
2466                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2467
2468                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2469                             ha->host_no));
2470
2471                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2472                             &ha->dpc_flags))) {
2473
2474                                 rval = qla2x00_loop_resync(ha);
2475
2476                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2477                         }
2478
2479                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2480                             ha->host_no));
2481                 }
2482
2483                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2484
2485                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2486                             ha->host_no));
2487
2488                         qla2x00_rescan_fcports(ha);
2489
2490                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2491                             "end.\n",
2492                             ha->host_no));
2493                 }
2494
2495                 if (!ha->interrupts_on)
2496                         ha->isp_ops->enable_intrs(ha);
2497
2498                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2499                         ha->isp_ops->beacon_blink(ha);
2500
2501                 qla2x00_do_dpc_all_vps(ha);
2502
2503                 ha->dpc_active = 0;
2504         } /* End of while(1) */
2505
2506         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2507
2508         /*
2509          * Make sure that nobody tries to wake us up again.
2510          */
2511         ha->dpc_active = 0;
2512
2513         return 0;
2514 }
2515
2516 void
2517 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2518 {
2519         if (ha->dpc_thread)
2520                 wake_up_process(ha->dpc_thread);
2521 }
2522
2523 /*
2524 *  qla2x00_rst_aen
2525 *      Processes asynchronous reset.
2526 *
2527 * Input:
2528 *      ha  = adapter block pointer.
2529 */
2530 static void
2531 qla2x00_rst_aen(scsi_qla_host_t *ha)
2532 {
2533         if (ha->flags.online && !ha->flags.reset_active &&
2534             !atomic_read(&ha->loop_down_timer) &&
2535             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2536                 do {
2537                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2538
2539                         /*
2540                          * Issue marker command only when we are going to start
2541                          * the I/O.
2542                          */
2543                         ha->marker_needed = 1;
2544                 } while (!atomic_read(&ha->loop_down_timer) &&
2545                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2546         }
2547 }
2548
2549 static void
2550 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2551 {
2552         struct scsi_cmnd *cmd = sp->cmd;
2553
2554         if (sp->flags & SRB_DMA_VALID) {
2555                 scsi_dma_unmap(cmd);
2556                 sp->flags &= ~SRB_DMA_VALID;
2557         }
2558         CMD_SP(cmd) = NULL;
2559 }
2560
2561 void
2562 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2563 {
2564         struct scsi_cmnd *cmd = sp->cmd;
2565
2566         qla2x00_sp_free_dma(ha, sp);
2567
2568         mempool_free(sp, ha->srb_mempool);
2569
2570         cmd->scsi_done(cmd);
2571 }
2572
2573 /**************************************************************************
2574 *   qla2x00_timer
2575 *
2576 * Description:
2577 *   One second timer
2578 *
2579 * Context: Interrupt
2580 ***************************************************************************/
2581 void
2582 qla2x00_timer(scsi_qla_host_t *ha)
2583 {
2584         unsigned long   cpu_flags = 0;
2585         fc_port_t       *fcport;
2586         int             start_dpc = 0;
2587         int             index;
2588         srb_t           *sp;
2589         int             t;
2590         scsi_qla_host_t *pha = to_qla_parent(ha);
2591
2592         /*
2593          * Ports - Port down timer.
2594          *
2595          * Whenever, a port is in the LOST state we start decrementing its port
2596          * down timer every second until it reaches zero. Once  it reaches zero
2597          * the port it marked DEAD.
2598          */
2599         t = 0;
2600         list_for_each_entry(fcport, &ha->fcports, list) {
2601                 if (fcport->port_type != FCT_TARGET)
2602                         continue;
2603
2604                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2605
2606                         if (atomic_read(&fcport->port_down_timer) == 0)
2607                                 continue;
2608
2609                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2610                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2611
2612                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2613                             "%d remaining\n",
2614                             ha->host_no,
2615                             t, atomic_read(&fcport->port_down_timer)));
2616                 }
2617                 t++;
2618         } /* End of for fcport  */
2619
2620
2621         /* Loop down handler. */
2622         if (atomic_read(&ha->loop_down_timer) > 0 &&
2623             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2624
2625                 if (atomic_read(&ha->loop_down_timer) ==
2626                     ha->loop_down_abort_time) {
2627
2628                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2629                             "queues before time expire\n",
2630                             ha->host_no));
2631
2632                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2633                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2634
2635                         /* Schedule an ISP abort to return any tape commands. */
2636                         /* NPIV - scan physical port only */
2637                         if (!ha->parent) {
2638                                 spin_lock_irqsave(&ha->hardware_lock,
2639                                     cpu_flags);
2640                                 for (index = 1;
2641                                     index < MAX_OUTSTANDING_COMMANDS;
2642                                     index++) {
2643                                         fc_port_t *sfcp;
2644
2645                                         sp = ha->outstanding_cmds[index];
2646                                         if (!sp)
2647                                                 continue;
2648                                         sfcp = sp->fcport;
2649                                         if (!(sfcp->flags & FCF_TAPE_PRESENT))
2650                                                 continue;
2651
2652                                         set_bit(ISP_ABORT_NEEDED,
2653                                             &ha->dpc_flags);
2654                                         break;
2655                                 }
2656                                 spin_unlock_irqrestore(&ha->hardware_lock,
2657                                     cpu_flags);
2658                         }
2659                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2660                         start_dpc++;
2661                 }
2662
2663                 /* if the loop has been down for 4 minutes, reinit adapter */
2664                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2665                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2666                             "restarting queues.\n",
2667                             ha->host_no));
2668
2669                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2670                         start_dpc++;
2671
2672                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2673                                 DEBUG(printk("scsi(%ld): Loop down - "
2674                                     "aborting ISP.\n",
2675                                     ha->host_no));
2676                                 qla_printk(KERN_WARNING, ha,
2677                                     "Loop down - aborting ISP.\n");
2678
2679                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2680                         }
2681                 }
2682                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2683                     ha->host_no,
2684                     atomic_read(&ha->loop_down_timer)));
2685         }
2686
2687         /* Check if beacon LED needs to be blinked */
2688         if (ha->beacon_blink_led == 1) {
2689                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2690                 start_dpc++;
2691         }
2692
2693         /* Schedule the DPC routine if needed */
2694         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2695             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2696             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2697             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2698             start_dpc ||
2699             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2700             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2701             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2702             test_bit(VP_DPC_NEEDED, &ha->dpc_flags) ||
2703             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2704                 qla2xxx_wake_dpc(pha);
2705
2706         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2707 }
2708
2709 /* XXX(hch): crude hack to emulate a down_timeout() */
2710 int
2711 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2712 {
2713         const unsigned int step = 100; /* msecs */
2714         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2715
2716         do {
2717                 if (!down_trylock(sema))
2718                         return 0;
2719                 if (msleep_interruptible(step))
2720                         break;
2721         } while (--iterations > 0);
2722
2723         return -ETIMEDOUT;
2724 }
2725
2726 /* Firmware interface routines. */
2727
2728 #define FW_BLOBS        6
2729 #define FW_ISP21XX      0
2730 #define FW_ISP22XX      1
2731 #define FW_ISP2300      2
2732 #define FW_ISP2322      3
2733 #define FW_ISP24XX      4
2734 #define FW_ISP25XX      5
2735
2736 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2737 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2738 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2739 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2740 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2741 #define FW_FILE_ISP25XX "ql2500_fw.bin"
2742
2743 static DECLARE_MUTEX(qla_fw_lock);
2744
2745 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2746         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2747         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2748         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2749         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2750         { .name = FW_FILE_ISP24XX, },
2751         { .name = FW_FILE_ISP25XX, },
2752 };
2753
2754 struct fw_blob *
2755 qla2x00_request_firmware(scsi_qla_host_t *ha)
2756 {
2757         struct fw_blob *blob;
2758
2759         blob = NULL;
2760         if (IS_QLA2100(ha)) {
2761                 blob = &qla_fw_blobs[FW_ISP21XX];
2762         } else if (IS_QLA2200(ha)) {
2763                 blob = &qla_fw_blobs[FW_ISP22XX];
2764         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2765                 blob = &qla_fw_blobs[FW_ISP2300];
2766         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2767                 blob = &qla_fw_blobs[FW_ISP2322];
2768         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2769                 blob = &qla_fw_blobs[FW_ISP24XX];
2770         } else if (IS_QLA25XX(ha)) {
2771                 blob = &qla_fw_blobs[FW_ISP25XX];
2772         }
2773
2774         down(&qla_fw_lock);
2775         if (blob->fw)
2776                 goto out;
2777
2778         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2779                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2780                     "(%s).\n", ha->host_no, blob->name));
2781                 blob->fw = NULL;
2782                 blob = NULL;
2783                 goto out;
2784         }
2785
2786 out:
2787         up(&qla_fw_lock);
2788         return blob;
2789 }
2790
2791 static void
2792 qla2x00_release_firmware(void)
2793 {
2794         int idx;
2795
2796         down(&qla_fw_lock);
2797         for (idx = 0; idx < FW_BLOBS; idx++)
2798                 if (qla_fw_blobs[idx].fw)
2799                         release_firmware(qla_fw_blobs[idx].fw);
2800         up(&qla_fw_lock);
2801 }
2802
2803 static struct pci_device_id qla2xxx_pci_tbl[] = {
2804         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2805         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2806         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2807         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2808         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2809         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2810         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2811         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2812         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2813         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2814         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2815         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) },
2816         { 0 },
2817 };
2818 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2819
2820 static struct pci_driver qla2xxx_pci_driver = {
2821         .name           = QLA2XXX_DRIVER_NAME,
2822         .driver         = {
2823                 .owner          = THIS_MODULE,
2824         },
2825         .id_table       = qla2xxx_pci_tbl,
2826         .probe          = qla2x00_probe_one,
2827         .remove         = __devexit_p(qla2x00_remove_one),
2828 };
2829
2830 /**
2831  * qla2x00_module_init - Module initialization.
2832  **/
2833 static int __init
2834 qla2x00_module_init(void)
2835 {
2836         int ret = 0;
2837
2838         /* Allocate cache for SRBs. */
2839         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2840             SLAB_HWCACHE_ALIGN, NULL);
2841         if (srb_cachep == NULL) {
2842                 printk(KERN_ERR
2843                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2844                 return -ENOMEM;
2845         }
2846
2847         /* Derive version string. */
2848         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2849         if (ql2xextended_error_logging)
2850                 strcat(qla2x00_version_str, "-debug");
2851
2852         qla2xxx_transport_template =
2853             fc_attach_transport(&qla2xxx_transport_functions);
2854         if (!qla2xxx_transport_template) {
2855                 kmem_cache_destroy(srb_cachep);
2856                 return -ENODEV;
2857         }
2858         qla2xxx_transport_vport_template =
2859             fc_attach_transport(&qla2xxx_transport_vport_functions);
2860         if (!qla2xxx_transport_vport_template) {
2861                 kmem_cache_destroy(srb_cachep);
2862                 fc_release_transport(qla2xxx_transport_template);
2863                 return -ENODEV;
2864         }
2865
2866         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2867         ret = pci_register_driver(&qla2xxx_pci_driver);
2868         if (ret) {
2869                 kmem_cache_destroy(srb_cachep);
2870                 fc_release_transport(qla2xxx_transport_template);
2871                 fc_release_transport(qla2xxx_transport_vport_template);
2872         }
2873         return ret;
2874 }
2875
2876 /**
2877  * qla2x00_module_exit - Module cleanup.
2878  **/
2879 static void __exit
2880 qla2x00_module_exit(void)
2881 {
2882         pci_unregister_driver(&qla2xxx_pci_driver);
2883         qla2x00_release_firmware();
2884         kmem_cache_destroy(srb_cachep);
2885         fc_release_transport(qla2xxx_transport_template);
2886         fc_release_transport(qla2xxx_transport_vport_template);
2887 }
2888
2889 module_init(qla2x00_module_init);
2890 module_exit(qla2x00_module_exit);
2891
2892 MODULE_AUTHOR("QLogic Corporation");
2893 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2894 MODULE_LICENSE("GPL");
2895 MODULE_VERSION(QLA2XXX_VERSION);
2896 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2897 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2898 MODULE_FIRMWARE(FW_FILE_ISP2300);
2899 MODULE_FIRMWARE(FW_FILE_ISP2322);
2900 MODULE_FIRMWARE(FW_FILE_ISP24XX);