drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
  58 int ql2xfwloadflash;
  59 module_param(ql2xfwloadflash, int, S_IRUGO|S_IRUSR);
  60 MODULE_PARM_DESC(ql2xfwloadflash,
  61                 "Load ISP24xx firmware image from FLASH (onboard memory).");
  62 #endif
  63
  64 static void qla2x00_free_device(scsi_qla_host_t *);
  65
  66 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  67
  68 int ql2xfdmienable;
  69 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  70 MODULE_PARM_DESC(ql2xfdmienable,
  71                 "Enables FDMI registratons "
  72                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  73
  74 int ql2xprocessrscn;
  75 module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xprocessrscn,
  77                 "Option to enable port RSCN handling via a series of less"
  78                 "fabric intrusive ADISCs and PLOGIs.");
  79
  80 /*
  81  * SCSI host template entry points
  82  */
  83 static int qla2xxx_slave_configure(struct scsi_device * device);
  84 static int qla2xxx_slave_alloc(struct scsi_device *);
  85 static void qla2xxx_slave_destroy(struct scsi_device *);
  86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  87                 void (*fn)(struct scsi_cmnd *));
  88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  89                 void (*fn)(struct scsi_cmnd *));
  90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  96
  97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  98 static int qla2x00_change_queue_type(struct scsi_device *, int);
  99
 100 static struct scsi_host_template qla2x00_driver_template = {
 101         .module                 = THIS_MODULE,
 102         .name                   = "qla2xxx",
 103         .queuecommand           = qla2x00_queuecommand,
 104
 105         .eh_abort_handler       = qla2xxx_eh_abort,
 106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 109
 110         .slave_configure        = qla2xxx_slave_configure,
 111
 112         .slave_alloc            = qla2xxx_slave_alloc,
 113         .slave_destroy          = qla2xxx_slave_destroy,
 114         .change_queue_depth     = qla2x00_change_queue_depth,
 115         .change_queue_type      = qla2x00_change_queue_type,
 116         .this_id                = -1,
 117         .cmd_per_lun            = 3,
 118         .use_clustering         = ENABLE_CLUSTERING,
 119         .sg_tablesize           = SG_ALL,
 120
 121         /*
 122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 123          * which equates to 0x800000 sectors.
 124          */
 125         .max_sectors            = 0xFFFF,
 126         .shost_attrs            = qla2x00_host_attrs,
 127 };
 128
 129 static struct scsi_host_template qla24xx_driver_template = {
 130         .module                 = THIS_MODULE,
 131         .name                   = "qla2xxx",
 132         .queuecommand           = qla24xx_queuecommand,
 133
 134         .eh_abort_handler       = qla2xxx_eh_abort,
 135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 138
 139         .slave_configure        = qla2xxx_slave_configure,
 140
 141         .slave_alloc            = qla2xxx_slave_alloc,
 142         .slave_destroy          = qla2xxx_slave_destroy,
 143         .change_queue_depth     = qla2x00_change_queue_depth,
 144         .change_queue_type      = qla2x00_change_queue_type,
 145         .this_id                = -1,
 146         .cmd_per_lun            = 3,
 147         .use_clustering         = ENABLE_CLUSTERING,
 148         .sg_tablesize           = SG_ALL,
 149
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 155
 156 /* TODO Convert to inlines
 157  *
 158  * Timer routines
 159  */
 160 #define WATCH_INTERVAL          1       /* number of seconds */
 161
 162 static void qla2x00_timer(scsi_qla_host_t *);
 163
 164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 165     void *, unsigned long);
 166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 168
 169 static inline void
 170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 171 {
 172         init_timer(&ha->timer);
 173         ha->timer.expires = jiffies + interval * HZ;
 174         ha->timer.data = (unsigned long)ha;
 175         ha->timer.function = (void (*)(unsigned long))func;
 176         add_timer(&ha->timer);
 177         ha->timer_active = 1;
 178 }
 179
 180 static inline void
 181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 182 {
 183         mod_timer(&ha->timer, jiffies + interval * HZ);
 184 }
 185
 186 static __inline__ void
 187 qla2x00_stop_timer(scsi_qla_host_t *ha)
 188 {
 189         del_timer_sync(&ha->timer);
 190         ha->timer_active = 0;
 191 }
 192
 193 static int qla2x00_do_dpc(void *data);
 194
 195 static void qla2x00_rst_aen(scsi_qla_host_t *);
 196
 197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 203
 204 /* -------------------------------------------------------------------------- */
 205
 206 static char *
 207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 208 {
 209         static char *pci_bus_modes[] = {
 210                 "33", "66", "100", "133",
 211         };
 212         uint16_t pci_bus;
 213
 214         strcpy(str, "PCI");
 215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 216         if (pci_bus) {
 217                 strcat(str, "-X (");
 218                 strcat(str, pci_bus_modes[pci_bus]);
 219         } else {
 220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 221                 strcat(str, " (");
 222                 strcat(str, pci_bus_modes[pci_bus]);
 223         }
 224         strcat(str, " MHz)");
 225
 226         return (str);
 227 }
 228
 229 static char *
 230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 231 {
 232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 233         uint32_t pci_bus;
 234         int pcie_reg;
 235
 236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 237         if (pcie_reg) {
 238                 char lwstr[6];
 239                 uint16_t pcie_lstat, lspeed, lwidth;
 240
 241                 pcie_reg += 0x12;
 242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 244                 lwidth = (pcie_lstat &
 245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 246
 247                 strcpy(str, "PCIe (");
 248                 if (lspeed == 1)
 249                         strcat(str, "2.5Gb/s ");
 250                 else
 251                         strcat(str, "<unknown> ");
 252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 253                 strcat(str, lwstr);
 254
 255                 return str;
 256         }
 257
 258         strcpy(str, "PCI");
 259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 260         if (pci_bus == 0 || pci_bus == 8) {
 261                 strcat(str, " (");
 262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 263         } else {
 264                 strcat(str, "-X ");
 265                 if (pci_bus & BIT_2)
 266                         strcat(str, "Mode 2");
 267                 else
 268                         strcat(str, "Mode 1");
 269                 strcat(str, " (");
 270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 271         }
 272         strcat(str, " MHz)");
 273
 274         return str;
 275 }
 276
 277 char *
 278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 279 {
 280         char un_str[10];
 281
 282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 283             ha->fw_minor_version,
 284             ha->fw_subminor_version);
 285
 286         if (ha->fw_attributes & BIT_9) {
 287                 strcat(str, "FLX");
 288                 return (str);
 289         }
 290
 291         switch (ha->fw_attributes & 0xFF) {
 292         case 0x7:
 293                 strcat(str, "EF");
 294                 break;
 295         case 0x17:
 296                 strcat(str, "TP");
 297                 break;
 298         case 0x37:
 299                 strcat(str, "IP");
 300                 break;
 301         case 0x77:
 302                 strcat(str, "VI");
 303                 break;
 304         default:
 305                 sprintf(un_str, "(%x)", ha->fw_attributes);
 306                 strcat(str, un_str);
 307                 break;
 308         }
 309         if (ha->fw_attributes & 0x100)
 310                 strcat(str, "X");
 311
 312         return (str);
 313 }
 314
 315 char *
 316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 317 {
 318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 319             ha->fw_minor_version,
 320             ha->fw_subminor_version);
 321
 322         if (ha->fw_attributes & BIT_0)
 323                 strcat(str, "[Class 2] ");
 324         if (ha->fw_attributes & BIT_1)
 325                 strcat(str, "[IP] ");
 326         if (ha->fw_attributes & BIT_2)
 327                 strcat(str, "[Multi-ID] ");
 328         if (ha->fw_attributes & BIT_13)
 329                 strcat(str, "[Experimental]");
 330         return str;
 331 }
 332
 333 static inline srb_t *
 334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 336 {
 337         srb_t *sp;
 338
 339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 340         if (!sp)
 341                 return sp;
 342
 343         atomic_set(&sp->ref_count, 1);
 344         sp->ha = ha;
 345         sp->fcport = fcport;
 346         sp->cmd = cmd;
 347         sp->flags = 0;
 348         CMD_SP(cmd) = (void *)sp;
 349         cmd->scsi_done = done;
 350
 351         return sp;
 352 }
 353
 354 static int
 355 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 356 {
 357         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 358         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 359         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 360         srb_t *sp;
 361         int rval;
 362
 363         rval = fc_remote_port_chkready(rport);
 364         if (rval) {
 365                 cmd->result = rval;
 366                 goto qc_fail_command;
 367         }
 368
 369         /* Close window on fcport/rport state-transitioning. */
 370         if (!*(fc_port_t **)rport->dd_data) {
 371                 cmd->result = DID_IMM_RETRY << 16;
 372                 goto qc_fail_command;
 373         }
 374
 375         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 376                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 377                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 378                         cmd->result = DID_NO_CONNECT << 16;
 379                         goto qc_fail_command;
 380                 }
 381                 goto qc_host_busy;
 382         }
 383
 384         spin_unlock_irq(ha->host->host_lock);
 385
 386         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 387         if (!sp)
 388                 goto qc_host_busy_lock;
 389
 390         rval = qla2x00_start_scsi(sp);
 391         if (rval != QLA_SUCCESS)
 392                 goto qc_host_busy_free_sp;
 393
 394         spin_lock_irq(ha->host->host_lock);
 395
 396         return 0;
 397
 398 qc_host_busy_free_sp:
 399         qla2x00_sp_free_dma(ha, sp);
 400         mempool_free(sp, ha->srb_mempool);
 401
 402 qc_host_busy_lock:
 403         spin_lock_irq(ha->host->host_lock);
 404
 405 qc_host_busy:
 406         return SCSI_MLQUEUE_HOST_BUSY;
 407
 408 qc_fail_command:
 409         done(cmd);
 410
 411         return 0;
 412 }
 413
 414
 415 static int
 416 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 417 {
 418         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 419         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 420         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 421         srb_t *sp;
 422         int rval;
 423
 424         rval = fc_remote_port_chkready(rport);
 425         if (rval) {
 426                 cmd->result = rval;
 427                 goto qc24_fail_command;
 428         }
 429
 430         /* Close window on fcport/rport state-transitioning. */
 431         if (!*(fc_port_t **)rport->dd_data) {
 432                 cmd->result = DID_IMM_RETRY << 16;
 433                 goto qc24_fail_command;
 434         }
 435
 436         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 437                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 438                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 439                         cmd->result = DID_NO_CONNECT << 16;
 440                         goto qc24_fail_command;
 441                 }
 442                 goto qc24_host_busy;
 443         }
 444
 445         spin_unlock_irq(ha->host->host_lock);
 446
 447         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 448         if (!sp)
 449                 goto qc24_host_busy_lock;
 450
 451         rval = qla24xx_start_scsi(sp);
 452         if (rval != QLA_SUCCESS)
 453                 goto qc24_host_busy_free_sp;
 454
 455         spin_lock_irq(ha->host->host_lock);
 456
 457         return 0;
 458
 459 qc24_host_busy_free_sp:
 460         qla2x00_sp_free_dma(ha, sp);
 461         mempool_free(sp, ha->srb_mempool);
 462
 463 qc24_host_busy_lock:
 464         spin_lock_irq(ha->host->host_lock);
 465
 466 qc24_host_busy:
 467         return SCSI_MLQUEUE_HOST_BUSY;
 468
 469 qc24_fail_command:
 470         done(cmd);
 471
 472         return 0;
 473 }
 474
 475
 476 /*
 477  * qla2x00_eh_wait_on_command
 478  *    Waits for the command to be returned by the Firmware for some
 479  *    max time.
 480  *
 481  * Input:
 482  *    ha = actual ha whose done queue will contain the command
 483  *            returned by firmware.
 484  *    cmd = Scsi Command to wait on.
 485  *    flag = Abort/Reset(Bus or Device Reset)
 486  *
 487  * Return:
 488  *    Not Found : 0
 489  *    Found : 1
 490  */
 491 static int
 492 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 493 {
 494 #define ABORT_POLLING_PERIOD    1000
 495 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 496         unsigned long wait_iter = ABORT_WAIT_ITER;
 497         int ret = QLA_SUCCESS;
 498
 499         while (CMD_SP(cmd)) {
 500                 msleep(ABORT_POLLING_PERIOD);
 501
 502                 if (--wait_iter)
 503                         break;
 504         }
 505         if (CMD_SP(cmd))
 506                 ret = QLA_FUNCTION_FAILED;
 507
 508         return ret;
 509 }
 510
 511 /*
 512  * qla2x00_wait_for_hba_online
 513  *    Wait till the HBA is online after going through
 514  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 515  *    finally HBA is disabled ie marked offline
 516  *
 517  * Input:
 518  *     ha - pointer to host adapter structure
 519  *
 520  * Note:
 521  *    Does context switching-Release SPIN_LOCK
 522  *    (if any) before calling this routine.
 523  *
 524  * Return:
 525  *    Success (Adapter is online) : 0
 526  *    Failed  (Adapter is offline/disabled) : 1
 527  */
 528 int
 529 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 530 {
 531         int             return_status;
 532         unsigned long   wait_online;
 533
 534         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 535         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 536             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 537             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 538             ha->dpc_active) && time_before(jiffies, wait_online)) {
 539
 540                 msleep(1000);
 541         }
 542         if (ha->flags.online)
 543                 return_status = QLA_SUCCESS;
 544         else
 545                 return_status = QLA_FUNCTION_FAILED;
 546
 547         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 548
 549         return (return_status);
 550 }
 551
 552 /*
 553  * qla2x00_wait_for_loop_ready
 554  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 555  *    to be in LOOP_READY state.
 556  * Input:
 557  *     ha - pointer to host adapter structure
 558  *
 559  * Note:
 560  *    Does context switching-Release SPIN_LOCK
 561  *    (if any) before calling this routine.
 562  *
 563  *
 564  * Return:
 565  *    Success (LOOP_READY) : 0
 566  *    Failed  (LOOP_NOT_READY) : 1
 567  */
 568 static inline int
 569 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 570 {
 571         int      return_status = QLA_SUCCESS;
 572         unsigned long loop_timeout ;
 573
 574         /* wait for 5 min at the max for loop to be ready */
 575         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 576
 577         while ((!atomic_read(&ha->loop_down_timer) &&
 578             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 579             atomic_read(&ha->loop_state) != LOOP_READY) {
 580                 msleep(1000);
 581                 if (time_after_eq(jiffies, loop_timeout)) {
 582                         return_status = QLA_FUNCTION_FAILED;
 583                         break;
 584                 }
 585         }
 586         return (return_status);
 587 }
 588
 589 /**************************************************************************
 590 * qla2xxx_eh_abort
 591 *
 592 * Description:
 593 *    The abort function will abort the specified command.
 594 *
 595 * Input:
 596 *    cmd = Linux SCSI command packet to be aborted.
 597 *
 598 * Returns:
 599 *    Either SUCCESS or FAILED.
 600 *
 601 * Note:
 602 **************************************************************************/
 603 int
 604 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 605 {
 606         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 607         srb_t *sp;
 608         int ret, i;
 609         unsigned int id, lun;
 610         unsigned long serial;
 611         unsigned long flags;
 612
 613         if (!CMD_SP(cmd))
 614                 return FAILED;
 615
 616         ret = FAILED;
 617
 618         id = cmd->device->id;
 619         lun = cmd->device->lun;
 620         serial = cmd->serial_number;
 621
 622         /* Check active list for command command. */
 623         spin_lock_irqsave(&ha->hardware_lock, flags);
 624         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 625                 sp = ha->outstanding_cmds[i];
 626
 627                 if (sp == NULL)
 628                         continue;
 629
 630                 if (sp->cmd != cmd)
 631                         continue;
 632
 633                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 634                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 635                     sp->state));
 636                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 637
 638                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 639                 if (ha->isp_ops.abort_command(ha, sp)) {
 640                         DEBUG2(printk("%s(%ld): abort_command "
 641                             "mbx failed.\n", __func__, ha->host_no));
 642                 } else {
 643                         DEBUG3(printk("%s(%ld): abort_command "
 644                             "mbx success.\n", __func__, ha->host_no));
 645                         ret = SUCCESS;
 646                 }
 647                 spin_lock_irqsave(&ha->hardware_lock, flags);
 648
 649                 break;
 650         }
 651         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 652
 653         /* Wait for the command to be returned. */
 654         if (ret == SUCCESS) {
 655                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 656                         qla_printk(KERN_ERR, ha,
 657                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 658                             "%x.\n", ha->host_no, id, lun, serial, ret);
 659                 }
 660         }
 661
 662         qla_printk(KERN_INFO, ha,
 663             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 664             id, lun, serial, ret);
 665
 666         return ret;
 667 }
 668
 669 /**************************************************************************
 670 * qla2x00_eh_wait_for_pending_target_commands
 671 *
 672 * Description:
 673 *    Waits for all the commands to come back from the specified target.
 674 *
 675 * Input:
 676 *    ha - pointer to scsi_qla_host structure.
 677 *    t  - target
 678 * Returns:
 679 *    Either SUCCESS or FAILED.
 680 *
 681 * Note:
 682 **************************************************************************/
 683 static int
 684 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 685 {
 686         int     cnt;
 687         int     status;
 688         srb_t           *sp;
 689         struct scsi_cmnd *cmd;
 690         unsigned long flags;
 691
 692         status = 0;
 693
 694         /*
 695          * Waiting for all commands for the designated target in the active
 696          * array
 697          */
 698         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 699                 spin_lock_irqsave(&ha->hardware_lock, flags);
 700                 sp = ha->outstanding_cmds[cnt];
 701                 if (sp) {
 702                         cmd = sp->cmd;
 703                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 704                         if (cmd->device->id == t) {
 705                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 706                                         status = 1;
 707                                         break;
 708                                 }
 709                         }
 710                 } else {
 711                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 712                 }
 713         }
 714         return (status);
 715 }
 716
 717
 718 /**************************************************************************
 719 * qla2xxx_eh_device_reset
 720 *
 721 * Description:
 722 *    The device reset function will reset the target and abort any
 723 *    executing commands.
 724 *
 725 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 726 *          attempt to use this value, even if you determine it is
 727 *          non-null.
 728 *
 729 * Input:
 730 *    cmd = Linux SCSI command packet of the command that cause the
 731 *          bus device reset.
 732 *
 733 * Returns:
 734 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 735 *
 736 **************************************************************************/
 737 int
 738 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 739 {
 740         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 741         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 742         srb_t *sp;
 743         int ret;
 744         unsigned int id, lun;
 745         unsigned long serial;
 746
 747         ret = FAILED;
 748
 749         id = cmd->device->id;
 750         lun = cmd->device->lun;
 751         serial = cmd->serial_number;
 752
 753         sp = (srb_t *) CMD_SP(cmd);
 754         if (!sp || !fcport)
 755                 return ret;
 756
 757         qla_printk(KERN_INFO, ha,
 758             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 759
 760         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 761                 goto eh_dev_reset_done;
 762
 763         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 764                 if (qla2x00_device_reset(ha, fcport) == 0)
 765                         ret = SUCCESS;
 766
 767 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 768                 if (ret == SUCCESS) {
 769                         if (fcport->flags & FC_FABRIC_DEVICE) {
 770                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 771                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 772                         }
 773                 }
 774 #endif
 775         } else {
 776                 DEBUG2(printk(KERN_INFO
 777                     "%s failed: loop not ready\n",__func__);)
 778         }
 779
 780         if (ret == FAILED) {
 781                 DEBUG3(printk("%s(%ld): device reset failed\n",
 782                     __func__, ha->host_no));
 783                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 784                     __func__);
 785
 786                 goto eh_dev_reset_done;
 787         }
 788
 789         /* Flush outstanding commands. */
 790         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 791                 ret = FAILED;
 792         if (ret == FAILED) {
 793                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 794                     __func__, ha->host_no));
 795                 qla_printk(KERN_INFO, ha,
 796                     "%s: failed while waiting for commands\n", __func__);
 797         } else
 798                 qla_printk(KERN_INFO, ha,
 799                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 800                     id, lun);
 801  eh_dev_reset_done:
 802         return ret;
 803 }
 804
 805 /**************************************************************************
 806 * qla2x00_eh_wait_for_pending_commands
 807 *
 808 * Description:
 809 *    Waits for all the commands to come back from the specified host.
 810 *
 811 * Input:
 812 *    ha - pointer to scsi_qla_host structure.
 813 *
 814 * Returns:
 815 *    1 : SUCCESS
 816 *    0 : FAILED
 817 *
 818 * Note:
 819 **************************************************************************/
 820 static int
 821 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 822 {
 823         int     cnt;
 824         int     status;
 825         srb_t           *sp;
 826         struct scsi_cmnd *cmd;
 827         unsigned long flags;
 828
 829         status = 1;
 830
 831         /*
 832          * Waiting for all commands for the designated target in the active
 833          * array
 834          */
 835         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 836                 spin_lock_irqsave(&ha->hardware_lock, flags);
 837                 sp = ha->outstanding_cmds[cnt];
 838                 if (sp) {
 839                         cmd = sp->cmd;
 840                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 841                         status = qla2x00_eh_wait_on_command(ha, cmd);
 842                         if (status == 0)
 843                                 break;
 844                 }
 845                 else {
 846                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 847                 }
 848         }
 849         return (status);
 850 }
 851
 852
 853 /**************************************************************************
 854 * qla2xxx_eh_bus_reset
 855 *
 856 * Description:
 857 *    The bus reset function will reset the bus and abort any executing
 858 *    commands.
 859 *
 860 * Input:
 861 *    cmd = Linux SCSI command packet of the command that cause the
 862 *          bus reset.
 863 *
 864 * Returns:
 865 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 866 *
 867 **************************************************************************/
 868 int
 869 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 870 {
 871         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 872         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 873         srb_t *sp;
 874         int ret;
 875         unsigned int id, lun;
 876         unsigned long serial;
 877
 878         ret = FAILED;
 879
 880         id = cmd->device->id;
 881         lun = cmd->device->lun;
 882         serial = cmd->serial_number;
 883
 884         sp = (srb_t *) CMD_SP(cmd);
 885         if (!sp || !fcport)
 886                 return ret;
 887
 888         qla_printk(KERN_INFO, ha,
 889             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 890
 891         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 892                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 893                 goto eh_bus_reset_done;
 894         }
 895
 896         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 897                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 898                         ret = SUCCESS;
 899         }
 900         if (ret == FAILED)
 901                 goto eh_bus_reset_done;
 902
 903         /* Flush outstanding commands. */
 904         if (!qla2x00_eh_wait_for_pending_commands(ha))
 905                 ret = FAILED;
 906
 907 eh_bus_reset_done:
 908         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 909             (ret == FAILED) ? "failed" : "succeded");
 910
 911         return ret;
 912 }
 913
 914 /**************************************************************************
 915 * qla2xxx_eh_host_reset
 916 *
 917 * Description:
 918 *    The reset function will reset the Adapter.
 919 *
 920 * Input:
 921 *      cmd = Linux SCSI command packet of the command that cause the
 922 *            adapter reset.
 923 *
 924 * Returns:
 925 *      Either SUCCESS or FAILED.
 926 *
 927 * Note:
 928 **************************************************************************/
 929 int
 930 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 931 {
 932         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 933         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 934         srb_t *sp;
 935         int ret;
 936         unsigned int id, lun;
 937         unsigned long serial;
 938
 939         ret = FAILED;
 940
 941         id = cmd->device->id;
 942         lun = cmd->device->lun;
 943         serial = cmd->serial_number;
 944
 945         sp = (srb_t *) CMD_SP(cmd);
 946         if (!sp || !fcport)
 947                 return ret;
 948
 949         qla_printk(KERN_INFO, ha,
 950             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 951
 952         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 953                 goto eh_host_reset_lock;
 954
 955         /*
 956          * Fixme-may be dpc thread is active and processing
 957          * loop_resync,so wait a while for it to
 958          * be completed and then issue big hammer.Otherwise
 959          * it may cause I/O failure as big hammer marks the
 960          * devices as lost kicking of the port_down_timer
 961          * while dpc is stuck for the mailbox to complete.
 962          */
 963         qla2x00_wait_for_loop_ready(ha);
 964         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 965         if (qla2x00_abort_isp(ha)) {
 966                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 967                 /* failed. schedule dpc to try */
 968                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 969
 970                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 971                         goto eh_host_reset_lock;
 972         }
 973         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 974
 975         /* Waiting for our command in done_queue to be returned to OS.*/
 976         if (qla2x00_eh_wait_for_pending_commands(ha))
 977                 ret = SUCCESS;
 978
 979 eh_host_reset_lock:
 980         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 981             (ret == FAILED) ? "failed" : "succeded");
 982
 983         return ret;
 984 }
 985
 986 /*
 987 * qla2x00_loop_reset
 988 *      Issue loop reset.
 989 *
 990 * Input:
 991 *      ha = adapter block pointer.
 992 *
 993 * Returns:
 994 *      0 = success
 995 */
 996 static int
 997 qla2x00_loop_reset(scsi_qla_host_t *ha)
 998 {
 999         int status = QLA_SUCCESS;
1000         struct fc_port *fcport;
1001
1002         if (ha->flags.enable_lip_reset) {
1003                 status = qla2x00_lip_reset(ha);
1004         }
1005
1006         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1007                 list_for_each_entry(fcport, &ha->fcports, list) {
1008                         if (fcport->port_type != FCT_TARGET)
1009                                 continue;
1010
1011                         status = qla2x00_device_reset(ha, fcport);
1012                         if (status != QLA_SUCCESS)
1013                                 break;
1014                 }
1015         }
1016
1017         if (status == QLA_SUCCESS &&
1018                 ((!ha->flags.enable_target_reset &&
1019                   !ha->flags.enable_lip_reset) ||
1020                 ha->flags.enable_lip_full_login)) {
1021
1022                 status = qla2x00_full_login_lip(ha);
1023         }
1024
1025         /* Issue marker command only when we are going to start the I/O */
1026         ha->marker_needed = 1;
1027
1028         if (status) {
1029                 /* Empty */
1030                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1031                                 __func__,
1032                                 ha->host_no);)
1033         } else {
1034                 /* Empty */
1035                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1036                                 __func__,
1037                                 ha->host_no);)
1038         }
1039
1040         return(status);
1041 }
1042
1043 /*
1044  * qla2x00_device_reset
1045  *      Issue bus device reset message to the target.
1046  *
1047  * Input:
1048  *      ha = adapter block pointer.
1049  *      t = SCSI ID.
1050  *      TARGET_QUEUE_LOCK must be released.
1051  *      ADAPTER_STATE_LOCK must be released.
1052  *
1053  * Context:
1054  *      Kernel context.
1055  */
1056 static int
1057 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1058 {
1059         /* Abort Target command will clear Reservation */
1060         return ha->isp_ops.abort_target(reset_fcport);
1061 }
1062
1063 static int
1064 qla2xxx_slave_alloc(struct scsi_device *sdev)
1065 {
1066         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1067
1068         if (!rport || fc_remote_port_chkready(rport))
1069                 return -ENXIO;
1070
1071         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1072
1073         return 0;
1074 }
1075
1076 static int
1077 qla2xxx_slave_configure(struct scsi_device *sdev)
1078 {
1079         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1080         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1081
1082         if (sdev->tagged_supported)
1083                 scsi_activate_tcq(sdev, 32);
1084         else
1085                 scsi_deactivate_tcq(sdev, 32);
1086
1087         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1088
1089         return 0;
1090 }
1091
1092 static void
1093 qla2xxx_slave_destroy(struct scsi_device *sdev)
1094 {
1095         sdev->hostdata = NULL;
1096 }
1097
1098 static int
1099 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1100 {
1101         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1102         return sdev->queue_depth;
1103 }
1104
1105 static int
1106 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1107 {
1108         if (sdev->tagged_supported) {
1109                 scsi_set_tag_type(sdev, tag_type);
1110                 if (tag_type)
1111                         scsi_activate_tcq(sdev, sdev->queue_depth);
1112                 else
1113                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1114         } else
1115                 tag_type = 0;
1116
1117         return tag_type;
1118 }
1119
1120 /**
1121  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1122  * @ha: HA context
1123  *
1124  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1125  * supported addressing method.
1126  */
1127 static void
1128 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1129 {
1130         /* Assume a 32bit DMA mask. */
1131         ha->flags.enable_64bit_addressing = 0;
1132
1133         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1134                 /* Any upper-dword bits set? */
1135                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1136                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1137                         /* Ok, a 64bit DMA mask is applicable. */
1138                         ha->flags.enable_64bit_addressing = 1;
1139                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1140                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1141                         return;
1142                 }
1143         }
1144
1145         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1146         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1147 }
1148
1149 static inline void
1150 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1151 {
1152         ha->device_type = DT_EXTENDED_IDS;
1153         switch (ha->pdev->device) {
1154         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1155                 ha->device_type |= DT_ISP2100;
1156                 ha->device_type &= ~DT_EXTENDED_IDS;
1157                 break;
1158         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1159                 ha->device_type |= DT_ISP2200;
1160                 ha->device_type &= ~DT_EXTENDED_IDS;
1161                 break;
1162         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1163                 ha->device_type |= DT_ISP2300;
1164                 break;
1165         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1166                 ha->device_type |= DT_ISP2312;
1167                 break;
1168         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1169                 ha->device_type |= DT_ISP2322;
1170                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1171                     ha->pdev->subsystem_device == 0x0170)
1172                         ha->device_type |= DT_OEM_001;
1173                 break;
1174         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1175                 ha->device_type |= DT_ISP6312;
1176                 break;
1177         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1178                 ha->device_type |= DT_ISP6322;
1179                 break;
1180         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1181                 ha->device_type |= DT_ISP2422;
1182                 break;
1183         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1184                 ha->device_type |= DT_ISP2432;
1185                 break;
1186         case PCI_DEVICE_ID_QLOGIC_ISP2512:
1187                 ha->device_type |= DT_ISP2512;
1188                 break;
1189         case PCI_DEVICE_ID_QLOGIC_ISP2522:
1190                 ha->device_type |= DT_ISP2522;
1191                 break;
1192         }
1193 }
1194
1195 static int
1196 qla2x00_iospace_config(scsi_qla_host_t *ha)
1197 {
1198         unsigned long   pio, pio_len, pio_flags;
1199         unsigned long   mmio, mmio_len, mmio_flags;
1200
1201         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1202         pio = pci_resource_start(ha->pdev, 0);
1203         pio_len = pci_resource_len(ha->pdev, 0);
1204         pio_flags = pci_resource_flags(ha->pdev, 0);
1205         if (pio_flags & IORESOURCE_IO) {
1206                 if (pio_len < MIN_IOBASE_LEN) {
1207                         qla_printk(KERN_WARNING, ha,
1208                             "Invalid PCI I/O region size (%s)...\n",
1209                                 pci_name(ha->pdev));
1210                         pio = 0;
1211                 }
1212         } else {
1213                 qla_printk(KERN_WARNING, ha,
1214                     "region #0 not a PIO resource (%s)...\n",
1215                     pci_name(ha->pdev));
1216                 pio = 0;
1217         }
1218
1219         /* Use MMIO operations for all accesses. */
1220         mmio = pci_resource_start(ha->pdev, 1);
1221         mmio_len = pci_resource_len(ha->pdev, 1);
1222         mmio_flags = pci_resource_flags(ha->pdev, 1);
1223
1224         if (!(mmio_flags & IORESOURCE_MEM)) {
1225                 qla_printk(KERN_ERR, ha,
1226                     "region #0 not an MMIO resource (%s), aborting\n",
1227                     pci_name(ha->pdev));
1228                 goto iospace_error_exit;
1229         }
1230         if (mmio_len < MIN_IOBASE_LEN) {
1231                 qla_printk(KERN_ERR, ha,
1232                     "Invalid PCI mem region size (%s), aborting\n",
1233                         pci_name(ha->pdev));
1234                 goto iospace_error_exit;
1235         }
1236
1237         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1238                 qla_printk(KERN_WARNING, ha,
1239                     "Failed to reserve PIO/MMIO regions (%s)\n",
1240                     pci_name(ha->pdev));
1241
1242                 goto iospace_error_exit;
1243         }
1244
1245         ha->pio_address = pio;
1246         ha->pio_length = pio_len;
1247         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1248         if (!ha->iobase) {
1249                 qla_printk(KERN_ERR, ha,
1250                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1251
1252                 goto iospace_error_exit;
1253         }
1254
1255         return (0);
1256
1257 iospace_error_exit:
1258         return (-ENOMEM);
1259 }
1260
1261 static void
1262 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1263 {
1264         unsigned long flags = 0;
1265         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1266
1267         spin_lock_irqsave(&ha->hardware_lock, flags);
1268         ha->interrupts_on = 1;
1269         /* enable risc and host interrupts */
1270         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1271         RD_REG_WORD(&reg->ictrl);
1272         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1273
1274 }
1275
1276 static void
1277 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1278 {
1279         unsigned long flags = 0;
1280         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1281
1282         spin_lock_irqsave(&ha->hardware_lock, flags);
1283         ha->interrupts_on = 0;
1284         /* disable risc and host interrupts */
1285         WRT_REG_WORD(&reg->ictrl, 0);
1286         RD_REG_WORD(&reg->ictrl);
1287         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1288 }
1289
1290 static void
1291 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1292 {
1293         unsigned long flags = 0;
1294         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1295
1296         spin_lock_irqsave(&ha->hardware_lock, flags);
1297         ha->interrupts_on = 1;
1298         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1299         RD_REG_DWORD(&reg->ictrl);
1300         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1301 }
1302
1303 static void
1304 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1305 {
1306         unsigned long flags = 0;
1307         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1308
1309         spin_lock_irqsave(&ha->hardware_lock, flags);
1310         ha->interrupts_on = 0;
1311         WRT_REG_DWORD(&reg->ictrl, 0);
1312         RD_REG_DWORD(&reg->ictrl);
1313         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1314 }
1315
1316 /*
1317  * PCI driver interface
1318  */
1319 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1320 {
1321         int     ret = -ENODEV;
1322         device_reg_t __iomem *reg;
1323         struct Scsi_Host *host;
1324         scsi_qla_host_t *ha;
1325         unsigned long   flags = 0;
1326         unsigned long   wait_switch = 0;
1327         char pci_info[20];
1328         char fw_str[30];
1329         fc_port_t *fcport;
1330         struct scsi_host_template *sht;
1331
1332         if (pci_enable_device(pdev))
1333                 goto probe_out;
1334
1335         sht = &qla2x00_driver_template;
1336         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1337             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1338                 sht = &qla24xx_driver_template;
1339         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1340         if (host == NULL) {
1341                 printk(KERN_WARNING
1342                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1343                 goto probe_disable_device;
1344         }
1345
1346         /* Clear our data area */
1347         ha = (scsi_qla_host_t *)host->hostdata;
1348         memset(ha, 0, sizeof(scsi_qla_host_t));
1349
1350         ha->pdev = pdev;
1351         ha->host = host;
1352         ha->host_no = host->host_no;
1353         ha->brd_info = brd_info;
1354         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1355
1356         /* Set ISP-type information. */
1357         qla2x00_set_isp_flags(ha);
1358
1359         /* Configure PCI I/O space */
1360         ret = qla2x00_iospace_config(ha);
1361         if (ret)
1362                 goto probe_failed;
1363
1364         qla_printk(KERN_INFO, ha,
1365             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1366             ha->iobase);
1367
1368         spin_lock_init(&ha->hardware_lock);
1369
1370         ha->prev_topology = 0;
1371         ha->ports = MAX_BUSES;
1372         ha->init_cb_size = sizeof(init_cb_t);
1373         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1374         ha->link_data_rate = LDR_UNKNOWN;
1375         ha->optrom_size = OPTROM_SIZE_2300;
1376
1377         /* Assign ISP specific operations. */
1378         ha->isp_ops.pci_config          = qla2100_pci_config;
1379         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1380         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1381         ha->isp_ops.config_rings        = qla2x00_config_rings;
1382         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1383         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1384         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1385         ha->isp_ops.load_risc           = qla2x00_load_risc;
1386         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1387         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1388         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1389         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1390         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1391         ha->isp_ops.abort_command       = qla2x00_abort_command;
1392         ha->isp_ops.abort_target        = qla2x00_abort_target;
1393         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1394         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1395         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1396         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1397         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1398         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1399         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1400         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1401         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1402         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1403         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1404         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1405         if (IS_QLA2100(ha)) {
1406                 host->max_id = MAX_TARGETS_2100;
1407                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1408                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1409                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1410                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1411                 host->sg_tablesize = 32;
1412                 ha->gid_list_info_size = 4;
1413         } else if (IS_QLA2200(ha)) {
1414                 host->max_id = MAX_TARGETS_2200;
1415                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1416                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1417                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1418                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1419                 ha->gid_list_info_size = 4;
1420         } else if (IS_QLA23XX(ha)) {
1421                 host->max_id = MAX_TARGETS_2200;
1422                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1423                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1424                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1425                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1426                 ha->isp_ops.pci_config = qla2300_pci_config;
1427                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1428                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1429                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1430                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1431                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1432                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1433                 ha->gid_list_info_size = 6;
1434                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1435                         ha->optrom_size = OPTROM_SIZE_2322;
1436         } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1437                 host->max_id = MAX_TARGETS_2200;
1438                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1439                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1440                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1441                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1442                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1443                 ha->mgmt_svr_loop_id = 10;
1444                 ha->isp_ops.pci_config = qla24xx_pci_config;
1445                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1446                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1447                 ha->isp_ops.config_rings = qla24xx_config_rings;
1448                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1449                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1450                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1451                 ha->isp_ops.load_risc = qla24xx_load_risc;
1452 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1453                 if (ql2xfwloadflash)
1454                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1455 #endif
1456                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1457                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1458                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1459                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1460                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1461                 ha->isp_ops.abort_command = qla24xx_abort_command;
1462                 ha->isp_ops.abort_target = qla24xx_abort_target;
1463                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1464                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1465                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1466                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1467                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1468                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1469                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1470                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1471                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1472                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1473                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1474                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1475                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1476                 ha->gid_list_info_size = 8;
1477                 ha->optrom_size = OPTROM_SIZE_24XX;
1478         }
1479         host->can_queue = ha->request_q_length + 128;
1480
1481         /* load the F/W, read paramaters, and init the H/W */
1482         ha->instance = num_hosts;
1483
1484         init_MUTEX(&ha->mbx_cmd_sem);
1485         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1486
1487         INIT_LIST_HEAD(&ha->list);
1488         INIT_LIST_HEAD(&ha->fcports);
1489         INIT_LIST_HEAD(&ha->rscn_fcports);
1490
1491         /*
1492          * These locks are used to prevent more than one CPU
1493          * from modifying the queue at the same time. The
1494          * higher level "host_lock" will reduce most
1495          * contention for these locks.
1496          */
1497         spin_lock_init(&ha->mbx_reg_lock);
1498
1499         qla2x00_config_dma_addressing(ha);
1500         if (qla2x00_mem_alloc(ha)) {
1501                 qla_printk(KERN_WARNING, ha,
1502                     "[ERROR] Failed to allocate memory for adapter\n");
1503
1504                 ret = -ENOMEM;
1505                 goto probe_failed;
1506         }
1507
1508         if (qla2x00_initialize_adapter(ha) &&
1509             !(ha->device_flags & DFLG_NO_CABLE)) {
1510
1511                 qla_printk(KERN_WARNING, ha,
1512                     "Failed to initialize adapter\n");
1513
1514                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1515                     "Adapter flags %x.\n",
1516                     ha->host_no, ha->device_flags));
1517
1518                 ret = -ENODEV;
1519                 goto probe_failed;
1520         }
1521
1522         /*
1523          * Startup the kernel thread for this host adapter
1524          */
1525         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1526                         "%s_dpc", ha->host_str);
1527         if (IS_ERR(ha->dpc_thread)) {
1528                 qla_printk(KERN_WARNING, ha,
1529                     "Unable to start DPC thread!\n");
1530                 ret = PTR_ERR(ha->dpc_thread);
1531                 goto probe_failed;
1532         }
1533
1534         host->this_id = 255;
1535         host->cmd_per_lun = 3;
1536         host->unique_id = ha->instance;
1537         host->max_cmd_len = MAX_CMDSZ;
1538         host->max_channel = ha->ports - 1;
1539         host->max_lun = MAX_LUNS;
1540         host->transportt = qla2xxx_transport_template;
1541
1542         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1543             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1544         if (ret) {
1545                 qla_printk(KERN_WARNING, ha,
1546                     "Failed to reserve interrupt %d already in use.\n",
1547                     pdev->irq);
1548                 goto probe_failed;
1549         }
1550         host->irq = pdev->irq;
1551
1552         /* Initialized the timer */
1553         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1554
1555         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1556             ha->host_no, ha));
1557
1558         ha->isp_ops.disable_intrs(ha);
1559
1560         spin_lock_irqsave(&ha->hardware_lock, flags);
1561         reg = ha->iobase;
1562         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1563                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1564                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1565         } else {
1566                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1567                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1568                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1569
1570                 /* Enable proper parity */
1571                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1572                         if (IS_QLA2300(ha))
1573                                 /* SRAM parity */
1574                                 WRT_REG_WORD(&reg->isp.hccr,
1575                                     (HCCR_ENABLE_PARITY + 0x1));
1576                         else
1577                                 /* SRAM, Instruction RAM and GP RAM parity */
1578                                 WRT_REG_WORD(&reg->isp.hccr,
1579                                     (HCCR_ENABLE_PARITY + 0x7));
1580                 }
1581         }
1582         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1583
1584         ha->isp_ops.enable_intrs(ha);
1585
1586         /* v2.19.5b6 */
1587         /*
1588          * Wait around max loop_reset_delay secs for the devices to come
1589          * on-line. We don't want Linux scanning before we are ready.
1590          *
1591          */
1592         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1593             time_before(jiffies,wait_switch) &&
1594              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1595              && (ha->device_flags & SWITCH_FOUND) ;) {
1596
1597                 qla2x00_check_fabric_devices(ha);
1598
1599                 msleep(10);
1600         }
1601
1602         pci_set_drvdata(pdev, ha);
1603         ha->flags.init_done = 1;
1604         num_hosts++;
1605
1606         ret = scsi_add_host(host, &pdev->dev);
1607         if (ret)
1608                 goto probe_failed;
1609
1610         qla2x00_alloc_sysfs_attr(ha);
1611
1612         qla2x00_init_host_attr(ha);
1613
1614         qla_printk(KERN_INFO, ha, "\n"
1615             " QLogic Fibre Channel HBA Driver: %s\n"
1616             "  QLogic %s - %s\n"
1617             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1618             qla2x00_version_str, ha->model_number,
1619             ha->model_desc ? ha->model_desc: "", pdev->device,
1620             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1621             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1622             ha->isp_ops.fw_version_str(ha, fw_str));
1623
1624         /* Go with fc_rport registration. */
1625         list_for_each_entry(fcport, &ha->fcports, list)
1626                 qla2x00_reg_remote_port(ha, fcport);
1627
1628         return 0;
1629
1630 probe_failed:
1631         qla2x00_free_device(ha);
1632
1633         scsi_host_put(host);
1634
1635 probe_disable_device:
1636         pci_disable_device(pdev);
1637
1638 probe_out:
1639         return ret;
1640 }
1641 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1642
1643 void qla2x00_remove_one(struct pci_dev *pdev)
1644 {
1645         scsi_qla_host_t *ha;
1646
1647         ha = pci_get_drvdata(pdev);
1648
1649         qla2x00_free_sysfs_attr(ha);
1650
1651         fc_remove_host(ha->host);
1652
1653         scsi_remove_host(ha->host);
1654
1655         qla2x00_free_device(ha);
1656
1657         scsi_host_put(ha->host);
1658
1659         pci_set_drvdata(pdev, NULL);
1660 }
1661 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1662
1663 static void
1664 qla2x00_free_device(scsi_qla_host_t *ha)
1665 {
1666         /* Abort any outstanding IO descriptors. */
1667         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1668                 qla2x00_cancel_io_descriptors(ha);
1669
1670         /* Disable timer */
1671         if (ha->timer_active)
1672                 qla2x00_stop_timer(ha);
1673
1674         /* Kill the kernel thread for this host */
1675         if (ha->dpc_thread) {
1676                 struct task_struct *t = ha->dpc_thread;
1677
1678                 /*
1679                  * qla2xxx_wake_dpc checks for ->dpc_thread
1680                  * so we need to zero it out.
1681                  */
1682                 ha->dpc_thread = NULL;
1683                 kthread_stop(t);
1684         }
1685
1686         /* Stop currently executing firmware. */
1687         qla2x00_stop_firmware(ha);
1688
1689         /* turn-off interrupts on the card */
1690         if (ha->interrupts_on)
1691                 ha->isp_ops.disable_intrs(ha);
1692
1693         qla2x00_mem_free(ha);
1694
1695         ha->flags.online = 0;
1696
1697         /* Detach interrupts */
1698         if (ha->pdev->irq)
1699                 free_irq(ha->pdev->irq, ha);
1700
1701         /* release io space registers  */
1702         if (ha->iobase)
1703                 iounmap(ha->iobase);
1704         pci_release_regions(ha->pdev);
1705
1706         pci_disable_device(ha->pdev);
1707 }
1708
1709 static inline void
1710 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1711     int defer)
1712 {
1713         unsigned long flags;
1714         struct fc_rport *rport;
1715
1716         if (!fcport->rport)
1717                 return;
1718
1719         rport = fcport->rport;
1720         if (defer) {
1721                 spin_lock_irqsave(&fcport->rport_lock, flags);
1722                 fcport->drport = rport;
1723                 fcport->rport = NULL;
1724                 *(fc_port_t **)rport->dd_data = NULL;
1725                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1726                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1727         } else {
1728                 spin_lock_irqsave(&fcport->rport_lock, flags);
1729                 fcport->rport = NULL;
1730                 *(fc_port_t **)rport->dd_data = NULL;
1731                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1732                 fc_remote_port_delete(rport);
1733         }
1734 }
1735
1736 /*
1737  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1738  *
1739  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1740  *
1741  * Return: None.
1742  *
1743  * Context:
1744  */
1745 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1746     int do_login, int defer)
1747 {
1748         if (atomic_read(&fcport->state) == FCS_ONLINE)
1749                 qla2x00_schedule_rport_del(ha, fcport, defer);
1750
1751         /*
1752          * We may need to retry the login, so don't change the state of the
1753          * port but do the retries.
1754          */
1755         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1756                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1757
1758         if (!do_login)
1759                 return;
1760
1761         if (fcport->login_retry == 0) {
1762                 fcport->login_retry = ha->login_retry_count;
1763                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1764
1765                 DEBUG(printk("scsi(%ld): Port login retry: "
1766                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1767                     "id = 0x%04x retry cnt=%d\n",
1768                     ha->host_no,
1769                     fcport->port_name[0],
1770                     fcport->port_name[1],
1771                     fcport->port_name[2],
1772                     fcport->port_name[3],
1773                     fcport->port_name[4],
1774                     fcport->port_name[5],
1775                     fcport->port_name[6],
1776                     fcport->port_name[7],
1777                     fcport->loop_id,
1778                     fcport->login_retry));
1779         }
1780 }
1781
1782 /*
1783  * qla2x00_mark_all_devices_lost
1784  *      Updates fcport state when device goes offline.
1785  *
1786  * Input:
1787  *      ha = adapter block pointer.
1788  *      fcport = port structure pointer.
1789  *
1790  * Return:
1791  *      None.
1792  *
1793  * Context:
1794  */
1795 void
1796 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1797 {
1798         fc_port_t *fcport;
1799
1800         list_for_each_entry(fcport, &ha->fcports, list) {
1801                 if (fcport->port_type != FCT_TARGET)
1802                         continue;
1803
1804                 /*
1805                  * No point in marking the device as lost, if the device is
1806                  * already DEAD.
1807                  */
1808                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1809                         continue;
1810                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1811                         qla2x00_schedule_rport_del(ha, fcport, defer);
1812                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1813         }
1814
1815         if (defer)
1816                 qla2xxx_wake_dpc(ha);
1817 }
1818
1819 /*
1820 * qla2x00_mem_alloc
1821 *      Allocates adapter memory.
1822 *
1823 * Returns:
1824 *      0  = success.
1825 *      1  = failure.
1826 */
1827 static uint8_t
1828 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1829 {
1830         char    name[16];
1831         uint8_t   status = 1;
1832         int     retry= 10;
1833
1834         do {
1835                 /*
1836                  * This will loop only once if everything goes well, else some
1837                  * number of retries will be performed to get around a kernel
1838                  * bug where available mem is not allocated until after a
1839                  * little delay and a retry.
1840                  */
1841                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1842                     (ha->request_q_length + 1) * sizeof(request_t),
1843                     &ha->request_dma, GFP_KERNEL);
1844                 if (ha->request_ring == NULL) {
1845                         qla_printk(KERN_WARNING, ha,
1846                             "Memory Allocation failed - request_ring\n");
1847
1848                         qla2x00_mem_free(ha);
1849                         msleep(100);
1850
1851                         continue;
1852                 }
1853
1854                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1855                     (ha->response_q_length + 1) * sizeof(response_t),
1856                     &ha->response_dma, GFP_KERNEL);
1857                 if (ha->response_ring == NULL) {
1858                         qla_printk(KERN_WARNING, ha,
1859                             "Memory Allocation failed - response_ring\n");
1860
1861                         qla2x00_mem_free(ha);
1862                         msleep(100);
1863
1864                         continue;
1865                 }
1866
1867                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1868                     &ha->gid_list_dma, GFP_KERNEL);
1869                 if (ha->gid_list == NULL) {
1870                         qla_printk(KERN_WARNING, ha,
1871                             "Memory Allocation failed - gid_list\n");
1872
1873                         qla2x00_mem_free(ha);
1874                         msleep(100);
1875
1876                         continue;
1877                 }
1878
1879                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1880                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1881                 if (ha->rlc_rsp == NULL) {
1882                         qla_printk(KERN_WARNING, ha,
1883                                 "Memory Allocation failed - rlc");
1884
1885                         qla2x00_mem_free(ha);
1886                         msleep(100);
1887
1888                         continue;
1889                 }
1890
1891                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1892                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1893                     DMA_POOL_SIZE, 8, 0);
1894                 if (ha->s_dma_pool == NULL) {
1895                         qla_printk(KERN_WARNING, ha,
1896                             "Memory Allocation failed - s_dma_pool\n");
1897
1898                         qla2x00_mem_free(ha);
1899                         msleep(100);
1900
1901                         continue;
1902                 }
1903
1904                 /* get consistent memory allocated for init control block */
1905                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1906                     &ha->init_cb_dma);
1907                 if (ha->init_cb == NULL) {
1908                         qla_printk(KERN_WARNING, ha,
1909                             "Memory Allocation failed - init_cb\n");
1910
1911                         qla2x00_mem_free(ha);
1912                         msleep(100);
1913
1914                         continue;
1915                 }
1916                 memset(ha->init_cb, 0, ha->init_cb_size);
1917
1918                 /* Get consistent memory allocated for Get Port Database cmd */
1919                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1920                     &ha->iodesc_pd_dma);
1921                 if (ha->iodesc_pd == NULL) {
1922                         /* error */
1923                         qla_printk(KERN_WARNING, ha,
1924                             "Memory Allocation failed - iodesc_pd\n");
1925
1926                         qla2x00_mem_free(ha);
1927                         msleep(100);
1928
1929                         continue;
1930                 }
1931                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1932
1933                 /* Allocate ioctl related memory. */
1934                 if (qla2x00_alloc_ioctl_mem(ha)) {
1935                         qla_printk(KERN_WARNING, ha,
1936                             "Memory Allocation failed - ioctl_mem\n");
1937
1938                         qla2x00_mem_free(ha);
1939                         msleep(100);
1940
1941                         continue;
1942                 }
1943
1944                 if (qla2x00_allocate_sp_pool(ha)) {
1945                         qla_printk(KERN_WARNING, ha,
1946                             "Memory Allocation failed - "
1947                             "qla2x00_allocate_sp_pool()\n");
1948
1949                         qla2x00_mem_free(ha);
1950                         msleep(100);
1951
1952                         continue;
1953                 }
1954
1955                 /* Allocate memory for SNS commands */
1956                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1957                         /* Get consistent memory allocated for SNS commands */
1958                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1959                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1960                             GFP_KERNEL);
1961                         if (ha->sns_cmd == NULL) {
1962                                 /* error */
1963                                 qla_printk(KERN_WARNING, ha,
1964                                     "Memory Allocation failed - sns_cmd\n");
1965
1966                                 qla2x00_mem_free(ha);
1967                                 msleep(100);
1968
1969                                 continue;
1970                         }
1971                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1972                 } else {
1973                         /* Get consistent memory allocated for MS IOCB */
1974                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1975                             &ha->ms_iocb_dma);
1976                         if (ha->ms_iocb == NULL) {
1977                                 /* error */
1978                                 qla_printk(KERN_WARNING, ha,
1979                                     "Memory Allocation failed - ms_iocb\n");
1980
1981                                 qla2x00_mem_free(ha);
1982                                 msleep(100);
1983
1984                                 continue;
1985                         }
1986                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1987
1988                         /*
1989                          * Get consistent memory allocated for CT SNS
1990                          * commands
1991                          */
1992                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1993                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1994                             GFP_KERNEL);
1995                         if (ha->ct_sns == NULL) {
1996                                 /* error */
1997                                 qla_printk(KERN_WARNING, ha,
1998                                     "Memory Allocation failed - ct_sns\n");
1999
2000                                 qla2x00_mem_free(ha);
2001                                 msleep(100);
2002
2003                                 continue;
2004                         }
2005                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2006                 }
2007
2008                 /* Done all allocations without any error. */
2009                 status = 0;
2010
2011         } while (retry-- && status != 0);
2012
2013         if (status) {
2014                 printk(KERN_WARNING
2015                         "%s(): **** FAILED ****\n", __func__);
2016         }
2017
2018         return(status);
2019 }
2020
2021 /*
2022 * qla2x00_mem_free
2023 *      Frees all adapter allocated memory.
2024 *
2025 * Input:
2026 *      ha = adapter block pointer.
2027 */
2028 static void
2029 qla2x00_mem_free(scsi_qla_host_t *ha)
2030 {
2031         struct list_head        *fcpl, *fcptemp;
2032         fc_port_t       *fcport;
2033
2034         if (ha == NULL) {
2035                 /* error */
2036                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2037                 return;
2038         }
2039
2040         /* free ioctl memory */
2041         qla2x00_free_ioctl_mem(ha);
2042
2043         /* free sp pool */
2044         qla2x00_free_sp_pool(ha);
2045
2046         if (ha->sns_cmd)
2047                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2048                     ha->sns_cmd, ha->sns_cmd_dma);
2049
2050         if (ha->ct_sns)
2051                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2052                     ha->ct_sns, ha->ct_sns_dma);
2053
2054         if (ha->ms_iocb)
2055                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2056
2057         if (ha->iodesc_pd)
2058                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2059
2060         if (ha->init_cb)
2061                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2062
2063         if (ha->s_dma_pool)
2064                 dma_pool_destroy(ha->s_dma_pool);
2065
2066         if (ha->rlc_rsp)
2067                 dma_free_coherent(&ha->pdev->dev,
2068                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2069                     ha->rlc_rsp_dma);
2070
2071         if (ha->gid_list)
2072                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2073                     ha->gid_list_dma);
2074
2075         if (ha->response_ring)
2076                 dma_free_coherent(&ha->pdev->dev,
2077                     (ha->response_q_length + 1) * sizeof(response_t),
2078                     ha->response_ring, ha->response_dma);
2079
2080         if (ha->request_ring)
2081                 dma_free_coherent(&ha->pdev->dev,
2082                     (ha->request_q_length + 1) * sizeof(request_t),
2083                     ha->request_ring, ha->request_dma);
2084
2085         ha->sns_cmd = NULL;
2086         ha->sns_cmd_dma = 0;
2087         ha->ct_sns = NULL;
2088         ha->ct_sns_dma = 0;
2089         ha->ms_iocb = NULL;
2090         ha->ms_iocb_dma = 0;
2091         ha->iodesc_pd = NULL;
2092         ha->iodesc_pd_dma = 0;
2093         ha->init_cb = NULL;
2094         ha->init_cb_dma = 0;
2095
2096         ha->s_dma_pool = NULL;
2097
2098         ha->rlc_rsp = NULL;
2099         ha->rlc_rsp_dma = 0;
2100         ha->gid_list = NULL;
2101         ha->gid_list_dma = 0;
2102
2103         ha->response_ring = NULL;
2104         ha->response_dma = 0;
2105         ha->request_ring = NULL;
2106         ha->request_dma = 0;
2107
2108         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2109                 fcport = list_entry(fcpl, fc_port_t, list);
2110
2111                 /* fc ports */
2112                 list_del_init(&fcport->list);
2113                 kfree(fcport);
2114         }
2115         INIT_LIST_HEAD(&ha->fcports);
2116
2117         if (ha->fw_dump)
2118                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2119
2120         vfree(ha->fw_dump24);
2121
2122         vfree(ha->fw_dump_buffer);
2123
2124         ha->fw_dump = NULL;
2125         ha->fw_dump24 = NULL;
2126         ha->fw_dumped = 0;
2127         ha->fw_dump_reading = 0;
2128         ha->fw_dump_buffer = NULL;
2129
2130         vfree(ha->optrom_buffer);
2131 }
2132
2133 /*
2134  * qla2x00_allocate_sp_pool
2135  *       This routine is called during initialization to allocate
2136  *       memory for local srb_t.
2137  *
2138  * Input:
2139  *       ha   = adapter block pointer.
2140  *
2141  * Context:
2142  *      Kernel context.
2143  *
2144  * Note: Sets the ref_count for non Null sp to one.
2145  */
2146 static int
2147 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2148 {
2149         int      rval;
2150
2151         rval = QLA_SUCCESS;
2152         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2153             mempool_free_slab, srb_cachep);
2154         if (ha->srb_mempool == NULL) {
2155                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2156                 rval = QLA_FUNCTION_FAILED;
2157         }
2158         return (rval);
2159 }
2160
2161 /*
2162  *  This routine frees all adapter allocated memory.
2163  *
2164  */
2165 static void
2166 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2167 {
2168         if (ha->srb_mempool) {
2169                 mempool_destroy(ha->srb_mempool);
2170                 ha->srb_mempool = NULL;
2171         }
2172 }
2173
2174 /**************************************************************************
2175 * qla2x00_do_dpc
2176 *   This kernel thread is a task that is schedule by the interrupt handler
2177 *   to perform the background processing for interrupts.
2178 *
2179 * Notes:
2180 * This task always run in the context of a kernel thread.  It
2181 * is kick-off by the driver's detect code and starts up
2182 * up one per adapter. It immediately goes to sleep and waits for
2183 * some fibre event.  When either the interrupt handler or
2184 * the timer routine detects a event it will one of the task
2185 * bits then wake us up.
2186 **************************************************************************/
2187 static int
2188 qla2x00_do_dpc(void *data)
2189 {
2190         scsi_qla_host_t *ha;
2191         fc_port_t       *fcport;
2192         uint8_t         status;
2193         uint16_t        next_loopid;
2194
2195         ha = (scsi_qla_host_t *)data;
2196
2197         set_user_nice(current, -20);
2198
2199         while (!kthread_should_stop()) {
2200                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2201
2202                 set_current_state(TASK_INTERRUPTIBLE);
2203                 schedule();
2204                 __set_current_state(TASK_RUNNING);
2205
2206                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2207
2208                 /* Initialization not yet finished. Don't do anything yet. */
2209                 if (!ha->flags.init_done)
2210                         continue;
2211
2212                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2213
2214                 ha->dpc_active = 1;
2215
2216                 if (ha->flags.mbox_busy) {
2217                         ha->dpc_active = 0;
2218                         continue;
2219                 }
2220
2221                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2222
2223                         DEBUG(printk("scsi(%ld): dpc: sched "
2224                             "qla2x00_abort_isp ha = %p\n",
2225                             ha->host_no, ha));
2226                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2227                             &ha->dpc_flags))) {
2228
2229                                 if (qla2x00_abort_isp(ha)) {
2230                                         /* failed. retry later */
2231                                         set_bit(ISP_ABORT_NEEDED,
2232                                             &ha->dpc_flags);
2233                                 }
2234                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2235                         }
2236                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2237                             ha->host_no));
2238                 }
2239
2240                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2241                         qla2x00_update_fcports(ha);
2242
2243                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2244                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2245                             ha->host_no));
2246                         qla2x00_loop_reset(ha);
2247                 }
2248
2249                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2250                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2251
2252                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2253                             ha->host_no));
2254
2255                         qla2x00_rst_aen(ha);
2256                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2257                 }
2258
2259                 /* Retry each device up to login retry count */
2260                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2261                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2262                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2263
2264                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2265                             ha->host_no));
2266
2267                         next_loopid = 0;
2268                         list_for_each_entry(fcport, &ha->fcports, list) {
2269                                 if (fcport->port_type != FCT_TARGET)
2270                                         continue;
2271
2272                                 /*
2273                                  * If the port is not ONLINE then try to login
2274                                  * to it if we haven't run out of retries.
2275                                  */
2276                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2277                                     fcport->login_retry) {
2278
2279                                         fcport->login_retry--;
2280                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2281                                                 if (fcport->flags &
2282                                                     FCF_TAPE_PRESENT)
2283                                                         ha->isp_ops.fabric_logout(
2284                                                             ha, fcport->loop_id,
2285                                                             fcport->d_id.b.domain,
2286                                                             fcport->d_id.b.area,
2287                                                             fcport->d_id.b.al_pa);
2288                                                 status = qla2x00_fabric_login(
2289                                                     ha, fcport, &next_loopid);
2290                                         } else
2291                                                 status =
2292                                                     qla2x00_local_device_login(
2293                                                         ha, fcport->loop_id);
2294
2295                                         if (status == QLA_SUCCESS) {
2296                                                 fcport->old_loop_id = fcport->loop_id;
2297
2298                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2299                                                     ha->host_no, fcport->loop_id));
2300
2301                                                 qla2x00_update_fcport(ha,
2302                                                     fcport);
2303                                         } else if (status == 1) {
2304                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2305                                                 /* retry the login again */
2306                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2307                                                     ha->host_no,
2308                                                     fcport->login_retry, fcport->loop_id));
2309                                         } else {
2310                                                 fcport->login_retry = 0;
2311                                         }
2312                                 }
2313                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2314                                         break;
2315                         }
2316                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2317                             ha->host_no));
2318                 }
2319
2320                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2321                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2322
2323                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2324                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2325                             ha->host_no));
2326
2327                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2328
2329                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2330                             ha->host_no));
2331                 }
2332
2333                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2334
2335                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2336                             ha->host_no));
2337
2338                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2339                             &ha->dpc_flags))) {
2340
2341                                 qla2x00_loop_resync(ha);
2342
2343                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2344                         }
2345
2346                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2347                             ha->host_no));
2348                 }
2349
2350                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2351
2352                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2353                             ha->host_no));
2354
2355                         qla2x00_rescan_fcports(ha);
2356
2357                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2358                             "end.\n",
2359                             ha->host_no));
2360                 }
2361
2362                 if (!ha->interrupts_on)
2363                         ha->isp_ops.enable_intrs(ha);
2364
2365                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2366                         ha->isp_ops.beacon_blink(ha);
2367
2368                 ha->dpc_active = 0;
2369         } /* End of while(1) */
2370
2371         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2372
2373         /*
2374          * Make sure that nobody tries to wake us up again.
2375          */
2376         ha->dpc_active = 0;
2377
2378         return 0;
2379 }
2380
2381 void
2382 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2383 {
2384         if (ha->dpc_thread)
2385                 wake_up_process(ha->dpc_thread);
2386 }
2387
2388 /*
2389 *  qla2x00_rst_aen
2390 *      Processes asynchronous reset.
2391 *
2392 * Input:
2393 *      ha  = adapter block pointer.
2394 */
2395 static void
2396 qla2x00_rst_aen(scsi_qla_host_t *ha)
2397 {
2398         if (ha->flags.online && !ha->flags.reset_active &&
2399             !atomic_read(&ha->loop_down_timer) &&
2400             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2401                 do {
2402                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2403
2404                         /*
2405                          * Issue marker command only when we are going to start
2406                          * the I/O.
2407                          */
2408                         ha->marker_needed = 1;
2409                 } while (!atomic_read(&ha->loop_down_timer) &&
2410                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2411         }
2412 }
2413
2414 static void
2415 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2416 {
2417         struct scsi_cmnd *cmd = sp->cmd;
2418
2419         if (sp->flags & SRB_DMA_VALID) {
2420                 if (cmd->use_sg) {
2421                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2422                             cmd->use_sg, cmd->sc_data_direction);
2423                 } else if (cmd->request_bufflen) {
2424                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2425                             cmd->request_bufflen, cmd->sc_data_direction);
2426                 }
2427                 sp->flags &= ~SRB_DMA_VALID;
2428         }
2429         CMD_SP(cmd) = NULL;
2430 }
2431
2432 void
2433 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2434 {
2435         struct scsi_cmnd *cmd = sp->cmd;
2436
2437         qla2x00_sp_free_dma(ha, sp);
2438
2439         mempool_free(sp, ha->srb_mempool);
2440
2441         cmd->scsi_done(cmd);
2442 }
2443
2444 /**************************************************************************
2445 *   qla2x00_timer
2446 *
2447 * Description:
2448 *   One second timer
2449 *
2450 * Context: Interrupt
2451 ***************************************************************************/
2452 static void
2453 qla2x00_timer(scsi_qla_host_t *ha)
2454 {
2455         unsigned long   cpu_flags = 0;
2456         fc_port_t       *fcport;
2457         int             start_dpc = 0;
2458         int             index;
2459         srb_t           *sp;
2460         int             t;
2461
2462         /*
2463          * Ports - Port down timer.
2464          *
2465          * Whenever, a port is in the LOST state we start decrementing its port
2466          * down timer every second until it reaches zero. Once  it reaches zero
2467          * the port it marked DEAD.
2468          */
2469         t = 0;
2470         list_for_each_entry(fcport, &ha->fcports, list) {
2471                 if (fcport->port_type != FCT_TARGET)
2472                         continue;
2473
2474                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2475
2476                         if (atomic_read(&fcport->port_down_timer) == 0)
2477                                 continue;
2478
2479                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2480                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2481
2482                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2483                             "%d remaining\n",
2484                             ha->host_no,
2485                             t, atomic_read(&fcport->port_down_timer)));
2486                 }
2487                 t++;
2488         } /* End of for fcport  */
2489
2490
2491         /* Loop down handler. */
2492         if (atomic_read(&ha->loop_down_timer) > 0 &&
2493             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2494
2495                 if (atomic_read(&ha->loop_down_timer) ==
2496                     ha->loop_down_abort_time) {
2497
2498                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2499                             "queues before time expire\n",
2500                             ha->host_no));
2501
2502                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2503                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2504
2505                         /* Schedule an ISP abort to return any tape commands. */
2506                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2507                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2508                             index++) {
2509                                 fc_port_t *sfcp;
2510
2511                                 sp = ha->outstanding_cmds[index];
2512                                 if (!sp)
2513                                         continue;
2514                                 sfcp = sp->fcport;
2515                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2516                                         continue;
2517
2518                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2519                                 break;
2520                         }
2521                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2522
2523                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2524                         start_dpc++;
2525                 }
2526
2527                 /* if the loop has been down for 4 minutes, reinit adapter */
2528                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2529                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2530                             "restarting queues.\n",
2531                             ha->host_no));
2532
2533                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2534                         start_dpc++;
2535
2536                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2537                                 DEBUG(printk("scsi(%ld): Loop down - "
2538                                     "aborting ISP.\n",
2539                                     ha->host_no));
2540                                 qla_printk(KERN_WARNING, ha,
2541                                     "Loop down - aborting ISP.\n");
2542
2543                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2544                         }
2545                 }
2546                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2547                     ha->host_no,
2548                     atomic_read(&ha->loop_down_timer)));
2549         }
2550
2551         /* Check if beacon LED needs to be blinked */
2552         if (ha->beacon_blink_led == 1) {
2553                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2554                 start_dpc++;
2555         }
2556
2557         /* Schedule the DPC routine if needed */
2558         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2559             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2560             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2561             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2562             start_dpc ||
2563             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2564             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2565             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2566             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2567                 qla2xxx_wake_dpc(ha);
2568
2569         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2570 }
2571
2572 /* XXX(hch): crude hack to emulate a down_timeout() */
2573 int
2574 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2575 {
2576         const unsigned int step = 100; /* msecs */
2577         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2578
2579         do {
2580                 if (!down_trylock(sema))
2581                         return 0;
2582                 if (msleep_interruptible(step))
2583                         break;
2584         } while (--iterations >= 0);
2585
2586         return -ETIMEDOUT;
2587 }
2588
2589 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2590
2591 #define qla2x00_release_firmware()      do { } while (0)
2592 #define qla2x00_pci_module_init()       (0)
2593 #define qla2x00_pci_module_exit()       do { } while (0)
2594
2595 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2596
2597 /* Firmware interface routines. */
2598
2599 #define FW_BLOBS        6
2600 #define FW_ISP21XX      0
2601 #define FW_ISP22XX      1
2602 #define FW_ISP2300      2
2603 #define FW_ISP2322      3
2604 #define FW_ISP63XX      4
2605 #define FW_ISP24XX      5
2606
2607 static DECLARE_MUTEX(qla_fw_lock);
2608
2609 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2610         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2611         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2612         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2613         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2614         { .name = "ql6312_fw.bin", .segs = { 0x800, 0 }, },
2615         { .name = "ql2400_fw.bin", },
2616 };
2617
2618 struct fw_blob *
2619 qla2x00_request_firmware(scsi_qla_host_t *ha)
2620 {
2621         struct fw_blob *blob;
2622
2623         blob = NULL;
2624         if (IS_QLA2100(ha)) {
2625                 blob = &qla_fw_blobs[FW_ISP21XX];
2626         } else if (IS_QLA2200(ha)) {
2627                 blob = &qla_fw_blobs[FW_ISP22XX];
2628         } else if (IS_QLA2300(ha) || IS_QLA2312(ha)) {
2629                 blob = &qla_fw_blobs[FW_ISP2300];
2630         } else if (IS_QLA2322(ha)) {
2631                 blob = &qla_fw_blobs[FW_ISP2322];
2632         } else if (IS_QLA6312(ha) || IS_QLA6322(ha)) {
2633                 blob = &qla_fw_blobs[FW_ISP63XX];
2634         } else if (IS_QLA24XX(ha)) {
2635                 blob = &qla_fw_blobs[FW_ISP24XX];
2636         }
2637
2638         down(&qla_fw_lock);
2639         if (blob->fw)
2640                 goto out;
2641
2642         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2643                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2644                     "(%s).\n", ha->host_no, blob->name));
2645                 blob->fw = NULL;
2646                 blob = NULL;
2647                 goto out;
2648         }
2649
2650 out:
2651         up(&qla_fw_lock);
2652         return blob;
2653 }
2654
2655 static void
2656 qla2x00_release_firmware(void)
2657 {
2658         int idx;
2659
2660         down(&qla_fw_lock);
2661         for (idx = 0; idx < FW_BLOBS; idx++)
2662                 if (qla_fw_blobs[idx].fw)
2663                         release_firmware(qla_fw_blobs[idx].fw);
2664         up(&qla_fw_lock);
2665 }
2666
2667 static struct qla_board_info qla_board_tbl = {
2668         .drv_name       = "qla2xxx",
2669 };
2670
2671 static struct pci_device_id qla2xxx_pci_tbl[] = {
2672         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2673                 PCI_ANY_ID, PCI_ANY_ID, },
2674         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2675                 PCI_ANY_ID, PCI_ANY_ID, },
2676         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2677                 PCI_ANY_ID, PCI_ANY_ID, },
2678         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2679                 PCI_ANY_ID, PCI_ANY_ID, },
2680         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2681                 PCI_ANY_ID, PCI_ANY_ID, },
2682         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2683                 PCI_ANY_ID, PCI_ANY_ID, },
2684         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2685                 PCI_ANY_ID, PCI_ANY_ID, },
2686         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2687                 PCI_ANY_ID, PCI_ANY_ID, },
2688         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2689                 PCI_ANY_ID, PCI_ANY_ID, },
2690         { 0 },
2691 };
2692 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2693
2694 static int __devinit
2695 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2696 {
2697         return qla2x00_probe_one(pdev, &qla_board_tbl);
2698 }
2699
2700 static void __devexit
2701 qla2xxx_remove_one(struct pci_dev *pdev)
2702 {
2703         qla2x00_remove_one(pdev);
2704 }
2705
2706 static struct pci_driver qla2xxx_pci_driver = {
2707         .name           = "qla2xxx",
2708         .driver         = {
2709                 .owner          = THIS_MODULE,
2710         },
2711         .id_table       = qla2xxx_pci_tbl,
2712         .probe          = qla2xxx_probe_one,
2713         .remove         = __devexit_p(qla2xxx_remove_one),
2714 };
2715
2716 static inline int
2717 qla2x00_pci_module_init(void)
2718 {
2719         return pci_module_init(&qla2xxx_pci_driver);
2720 }
2721
2722 static inline void
2723 qla2x00_pci_module_exit(void)
2724 {
2725         pci_unregister_driver(&qla2xxx_pci_driver);
2726 }
2727
2728 #endif
2729
2730 /**
2731  * qla2x00_module_init - Module initialization.
2732  **/
2733 static int __init
2734 qla2x00_module_init(void)
2735 {
2736         int ret = 0;
2737
2738         /* Allocate cache for SRBs. */
2739         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2740             SLAB_HWCACHE_ALIGN, NULL, NULL);
2741         if (srb_cachep == NULL) {
2742                 printk(KERN_ERR
2743                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2744                 return -ENOMEM;
2745         }
2746
2747         /* Derive version string. */
2748         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2749 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2750         strcat(qla2x00_version_str, "-fw");
2751 #endif
2752 #if DEBUG_QLA2100
2753         strcat(qla2x00_version_str, "-debug");
2754 #endif
2755         qla2xxx_transport_template =
2756             fc_attach_transport(&qla2xxx_transport_functions);
2757         if (!qla2xxx_transport_template)
2758                 return -ENODEV;
2759
2760         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2761         ret = qla2x00_pci_module_init();
2762         if (ret) {
2763                 kmem_cache_destroy(srb_cachep);
2764                 fc_release_transport(qla2xxx_transport_template);
2765         }
2766         return ret;
2767 }
2768
2769 /**
2770  * qla2x00_module_exit - Module cleanup.
2771  **/
2772 static void __exit
2773 qla2x00_module_exit(void)
2774 {
2775         qla2x00_pci_module_exit();
2776         qla2x00_release_firmware();
2777         kmem_cache_destroy(srb_cachep);
2778         fc_release_transport(qla2xxx_transport_template);
2779 }
2780
2781 module_init(qla2x00_module_init);
2782 module_exit(qla2x00_module_exit);
2783
2784 MODULE_AUTHOR("QLogic Corporation");
2785 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2786 MODULE_LICENSE("GPL");
2787 MODULE_VERSION(QLA2XXX_VERSION);