err.no Git - linux-2.6/blob - 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                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 581                         return_status = QLA_FUNCTION_FAILED;
 582                         break;
 583                 }
 584                 msleep(1000);
 585                 if (time_after_eq(jiffies, loop_timeout)) {
 586                         return_status = QLA_FUNCTION_FAILED;
 587                         break;
 588                 }
 589         }
 590         return (return_status);
 591 }
 592
 593 /**************************************************************************
 594 * qla2xxx_eh_abort
 595 *
 596 * Description:
 597 *    The abort function will abort the specified command.
 598 *
 599 * Input:
 600 *    cmd = Linux SCSI command packet to be aborted.
 601 *
 602 * Returns:
 603 *    Either SUCCESS or FAILED.
 604 *
 605 * Note:
 606 **************************************************************************/
 607 int
 608 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 609 {
 610         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 611         srb_t *sp;
 612         int ret, i;
 613         unsigned int id, lun;
 614         unsigned long serial;
 615         unsigned long flags;
 616
 617         if (!CMD_SP(cmd))
 618                 return FAILED;
 619
 620         ret = FAILED;
 621
 622         id = cmd->device->id;
 623         lun = cmd->device->lun;
 624         serial = cmd->serial_number;
 625
 626         /* Check active list for command command. */
 627         spin_lock_irqsave(&ha->hardware_lock, flags);
 628         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 629                 sp = ha->outstanding_cmds[i];
 630
 631                 if (sp == NULL)
 632                         continue;
 633
 634                 if (sp->cmd != cmd)
 635                         continue;
 636
 637                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 638                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 639                     sp->state));
 640                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 641
 642                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 643                 if (ha->isp_ops.abort_command(ha, sp)) {
 644                         DEBUG2(printk("%s(%ld): abort_command "
 645                             "mbx failed.\n", __func__, ha->host_no));
 646                 } else {
 647                         DEBUG3(printk("%s(%ld): abort_command "
 648                             "mbx success.\n", __func__, ha->host_no));
 649                         ret = SUCCESS;
 650                 }
 651                 spin_lock_irqsave(&ha->hardware_lock, flags);
 652
 653                 break;
 654         }
 655         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 656
 657         /* Wait for the command to be returned. */
 658         if (ret == SUCCESS) {
 659                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 660                         qla_printk(KERN_ERR, ha,
 661                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 662                             "%x.\n", ha->host_no, id, lun, serial, ret);
 663                 }
 664         }
 665
 666         qla_printk(KERN_INFO, ha,
 667             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 668             id, lun, serial, ret);
 669
 670         return ret;
 671 }
 672
 673 /**************************************************************************
 674 * qla2x00_eh_wait_for_pending_target_commands
 675 *
 676 * Description:
 677 *    Waits for all the commands to come back from the specified target.
 678 *
 679 * Input:
 680 *    ha - pointer to scsi_qla_host structure.
 681 *    t  - target
 682 * Returns:
 683 *    Either SUCCESS or FAILED.
 684 *
 685 * Note:
 686 **************************************************************************/
 687 static int
 688 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 689 {
 690         int     cnt;
 691         int     status;
 692         srb_t           *sp;
 693         struct scsi_cmnd *cmd;
 694         unsigned long flags;
 695
 696         status = 0;
 697
 698         /*
 699          * Waiting for all commands for the designated target in the active
 700          * array
 701          */
 702         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 703                 spin_lock_irqsave(&ha->hardware_lock, flags);
 704                 sp = ha->outstanding_cmds[cnt];
 705                 if (sp) {
 706                         cmd = sp->cmd;
 707                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 708                         if (cmd->device->id == t) {
 709                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 710                                         status = 1;
 711                                         break;
 712                                 }
 713                         }
 714                 } else {
 715                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 716                 }
 717         }
 718         return (status);
 719 }
 720
 721
 722 /**************************************************************************
 723 * qla2xxx_eh_device_reset
 724 *
 725 * Description:
 726 *    The device reset function will reset the target and abort any
 727 *    executing commands.
 728 *
 729 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 730 *          attempt to use this value, even if you determine it is
 731 *          non-null.
 732 *
 733 * Input:
 734 *    cmd = Linux SCSI command packet of the command that cause the
 735 *          bus device reset.
 736 *
 737 * Returns:
 738 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 739 *
 740 **************************************************************************/
 741 int
 742 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 743 {
 744         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 745         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 746         srb_t *sp;
 747         int ret;
 748         unsigned int id, lun;
 749         unsigned long serial;
 750
 751         ret = FAILED;
 752
 753         id = cmd->device->id;
 754         lun = cmd->device->lun;
 755         serial = cmd->serial_number;
 756
 757         sp = (srb_t *) CMD_SP(cmd);
 758         if (!sp || !fcport)
 759                 return ret;
 760
 761         qla_printk(KERN_INFO, ha,
 762             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 763
 764         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 765                 goto eh_dev_reset_done;
 766
 767         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 768                 if (qla2x00_device_reset(ha, fcport) == 0)
 769                         ret = SUCCESS;
 770
 771 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 772                 if (ret == SUCCESS) {
 773                         if (fcport->flags & FC_FABRIC_DEVICE) {
 774                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 775                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 776                         }
 777                 }
 778 #endif
 779         } else {
 780                 DEBUG2(printk(KERN_INFO
 781                     "%s failed: loop not ready\n",__func__);)
 782         }
 783
 784         if (ret == FAILED) {
 785                 DEBUG3(printk("%s(%ld): device reset failed\n",
 786                     __func__, ha->host_no));
 787                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 788                     __func__);
 789
 790                 goto eh_dev_reset_done;
 791         }
 792
 793         /* Flush outstanding commands. */
 794         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 795                 ret = FAILED;
 796         if (ret == FAILED) {
 797                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 798                     __func__, ha->host_no));
 799                 qla_printk(KERN_INFO, ha,
 800                     "%s: failed while waiting for commands\n", __func__);
 801         } else
 802                 qla_printk(KERN_INFO, ha,
 803                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 804                     id, lun);
 805  eh_dev_reset_done:
 806         return ret;
 807 }
 808
 809 /**************************************************************************
 810 * qla2x00_eh_wait_for_pending_commands
 811 *
 812 * Description:
 813 *    Waits for all the commands to come back from the specified host.
 814 *
 815 * Input:
 816 *    ha - pointer to scsi_qla_host structure.
 817 *
 818 * Returns:
 819 *    1 : SUCCESS
 820 *    0 : FAILED
 821 *
 822 * Note:
 823 **************************************************************************/
 824 static int
 825 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 826 {
 827         int     cnt;
 828         int     status;
 829         srb_t           *sp;
 830         struct scsi_cmnd *cmd;
 831         unsigned long flags;
 832
 833         status = 1;
 834
 835         /*
 836          * Waiting for all commands for the designated target in the active
 837          * array
 838          */
 839         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 840                 spin_lock_irqsave(&ha->hardware_lock, flags);
 841                 sp = ha->outstanding_cmds[cnt];
 842                 if (sp) {
 843                         cmd = sp->cmd;
 844                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 845                         status = qla2x00_eh_wait_on_command(ha, cmd);
 846                         if (status == 0)
 847                                 break;
 848                 }
 849                 else {
 850                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 851                 }
 852         }
 853         return (status);
 854 }
 855
 856
 857 /**************************************************************************
 858 * qla2xxx_eh_bus_reset
 859 *
 860 * Description:
 861 *    The bus reset function will reset the bus and abort any executing
 862 *    commands.
 863 *
 864 * Input:
 865 *    cmd = Linux SCSI command packet of the command that cause the
 866 *          bus reset.
 867 *
 868 * Returns:
 869 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 870 *
 871 **************************************************************************/
 872 int
 873 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 874 {
 875         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 876         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 877         srb_t *sp;
 878         int ret;
 879         unsigned int id, lun;
 880         unsigned long serial;
 881
 882         ret = FAILED;
 883
 884         id = cmd->device->id;
 885         lun = cmd->device->lun;
 886         serial = cmd->serial_number;
 887
 888         sp = (srb_t *) CMD_SP(cmd);
 889         if (!sp || !fcport)
 890                 return ret;
 891
 892         qla_printk(KERN_INFO, ha,
 893             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 894
 895         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 896                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 897                 goto eh_bus_reset_done;
 898         }
 899
 900         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 901                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 902                         ret = SUCCESS;
 903         }
 904         if (ret == FAILED)
 905                 goto eh_bus_reset_done;
 906
 907         /* Flush outstanding commands. */
 908         if (!qla2x00_eh_wait_for_pending_commands(ha))
 909                 ret = FAILED;
 910
 911 eh_bus_reset_done:
 912         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 913             (ret == FAILED) ? "failed" : "succeded");
 914
 915         return ret;
 916 }
 917
 918 /**************************************************************************
 919 * qla2xxx_eh_host_reset
 920 *
 921 * Description:
 922 *    The reset function will reset the Adapter.
 923 *
 924 * Input:
 925 *      cmd = Linux SCSI command packet of the command that cause the
 926 *            adapter reset.
 927 *
 928 * Returns:
 929 *      Either SUCCESS or FAILED.
 930 *
 931 * Note:
 932 **************************************************************************/
 933 int
 934 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 935 {
 936         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 937         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 938         srb_t *sp;
 939         int ret;
 940         unsigned int id, lun;
 941         unsigned long serial;
 942
 943         ret = FAILED;
 944
 945         id = cmd->device->id;
 946         lun = cmd->device->lun;
 947         serial = cmd->serial_number;
 948
 949         sp = (srb_t *) CMD_SP(cmd);
 950         if (!sp || !fcport)
 951                 return ret;
 952
 953         qla_printk(KERN_INFO, ha,
 954             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 955
 956         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 957                 goto eh_host_reset_lock;
 958
 959         /*
 960          * Fixme-may be dpc thread is active and processing
 961          * loop_resync,so wait a while for it to
 962          * be completed and then issue big hammer.Otherwise
 963          * it may cause I/O failure as big hammer marks the
 964          * devices as lost kicking of the port_down_timer
 965          * while dpc is stuck for the mailbox to complete.
 966          */
 967         qla2x00_wait_for_loop_ready(ha);
 968         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 969         if (qla2x00_abort_isp(ha)) {
 970                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 971                 /* failed. schedule dpc to try */
 972                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 973
 974                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 975                         goto eh_host_reset_lock;
 976         }
 977         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 978
 979         /* Waiting for our command in done_queue to be returned to OS.*/
 980         if (qla2x00_eh_wait_for_pending_commands(ha))
 981                 ret = SUCCESS;
 982
 983 eh_host_reset_lock:
 984         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 985             (ret == FAILED) ? "failed" : "succeded");
 986
 987         return ret;
 988 }
 989
 990 /*
 991 * qla2x00_loop_reset
 992 *      Issue loop reset.
 993 *
 994 * Input:
 995 *      ha = adapter block pointer.
 996 *
 997 * Returns:
 998 *      0 = success
 999 */
1000 static int
1001 qla2x00_loop_reset(scsi_qla_host_t *ha)
1002 {
1003         int status = QLA_SUCCESS;
1004         struct fc_port *fcport;
1005
1006         if (ha->flags.enable_lip_reset) {
1007                 status = qla2x00_lip_reset(ha);
1008         }
1009
1010         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1011                 list_for_each_entry(fcport, &ha->fcports, list) {
1012                         if (fcport->port_type != FCT_TARGET)
1013                                 continue;
1014
1015                         status = qla2x00_device_reset(ha, fcport);
1016                         if (status != QLA_SUCCESS)
1017                                 break;
1018                 }
1019         }
1020
1021         if (status == QLA_SUCCESS &&
1022                 ((!ha->flags.enable_target_reset &&
1023                   !ha->flags.enable_lip_reset) ||
1024                 ha->flags.enable_lip_full_login)) {
1025
1026                 status = qla2x00_full_login_lip(ha);
1027         }
1028
1029         /* Issue marker command only when we are going to start the I/O */
1030         ha->marker_needed = 1;
1031
1032         if (status) {
1033                 /* Empty */
1034                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1035                                 __func__,
1036                                 ha->host_no);)
1037         } else {
1038                 /* Empty */
1039                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1040                                 __func__,
1041                                 ha->host_no);)
1042         }
1043
1044         return(status);
1045 }
1046
1047 /*
1048  * qla2x00_device_reset
1049  *      Issue bus device reset message to the target.
1050  *
1051  * Input:
1052  *      ha = adapter block pointer.
1053  *      t = SCSI ID.
1054  *      TARGET_QUEUE_LOCK must be released.
1055  *      ADAPTER_STATE_LOCK must be released.
1056  *
1057  * Context:
1058  *      Kernel context.
1059  */
1060 static int
1061 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1062 {
1063         /* Abort Target command will clear Reservation */
1064         return ha->isp_ops.abort_target(reset_fcport);
1065 }
1066
1067 static int
1068 qla2xxx_slave_alloc(struct scsi_device *sdev)
1069 {
1070         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1071
1072         if (!rport || fc_remote_port_chkready(rport))
1073                 return -ENXIO;
1074
1075         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1076
1077         return 0;
1078 }
1079
1080 static int
1081 qla2xxx_slave_configure(struct scsi_device *sdev)
1082 {
1083         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1084         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1085
1086         if (sdev->tagged_supported)
1087                 scsi_activate_tcq(sdev, 32);
1088         else
1089                 scsi_deactivate_tcq(sdev, 32);
1090
1091         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1092
1093         return 0;
1094 }
1095
1096 static void
1097 qla2xxx_slave_destroy(struct scsi_device *sdev)
1098 {
1099         sdev->hostdata = NULL;
1100 }
1101
1102 static int
1103 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1104 {
1105         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1106         return sdev->queue_depth;
1107 }
1108
1109 static int
1110 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1111 {
1112         if (sdev->tagged_supported) {
1113                 scsi_set_tag_type(sdev, tag_type);
1114                 if (tag_type)
1115                         scsi_activate_tcq(sdev, sdev->queue_depth);
1116                 else
1117                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1118         } else
1119                 tag_type = 0;
1120
1121         return tag_type;
1122 }
1123
1124 /**
1125  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1126  * @ha: HA context
1127  *
1128  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1129  * supported addressing method.
1130  */
1131 static void
1132 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1133 {
1134         /* Assume a 32bit DMA mask. */
1135         ha->flags.enable_64bit_addressing = 0;
1136
1137         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1138                 /* Any upper-dword bits set? */
1139                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1140                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1141                         /* Ok, a 64bit DMA mask is applicable. */
1142                         ha->flags.enable_64bit_addressing = 1;
1143                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1144                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1145                         return;
1146                 }
1147         }
1148
1149         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1150         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1151 }
1152
1153 static inline void
1154 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1155 {
1156         ha->device_type = DT_EXTENDED_IDS;
1157         switch (ha->pdev->device) {
1158         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1159                 ha->device_type |= DT_ISP2100;
1160                 ha->device_type &= ~DT_EXTENDED_IDS;
1161                 break;
1162         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1163                 ha->device_type |= DT_ISP2200;
1164                 ha->device_type &= ~DT_EXTENDED_IDS;
1165                 break;
1166         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1167                 ha->device_type |= DT_ISP2300;
1168                 ha->device_type |= DT_ZIO_SUPPORTED;
1169                 break;
1170         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1171                 ha->device_type |= DT_ISP2312;
1172                 ha->device_type |= DT_ZIO_SUPPORTED;
1173                 break;
1174         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1175                 ha->device_type |= DT_ISP2322;
1176                 ha->device_type |= DT_ZIO_SUPPORTED;
1177                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1178                     ha->pdev->subsystem_device == 0x0170)
1179                         ha->device_type |= DT_OEM_001;
1180                 break;
1181         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1182                 ha->device_type |= DT_ISP6312;
1183                 break;
1184         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1185                 ha->device_type |= DT_ISP6322;
1186                 break;
1187         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1188                 ha->device_type |= DT_ISP2422;
1189                 ha->device_type |= DT_ZIO_SUPPORTED;
1190                 break;
1191         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1192                 ha->device_type |= DT_ISP2432;
1193                 ha->device_type |= DT_ZIO_SUPPORTED;
1194                 break;
1195         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1196                 ha->device_type |= DT_ISP5422;
1197                 break;
1198         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1199                 ha->device_type |= DT_ISP5432;
1200                 break;
1201         }
1202 }
1203
1204 static int
1205 qla2x00_iospace_config(scsi_qla_host_t *ha)
1206 {
1207         unsigned long   pio, pio_len, pio_flags;
1208         unsigned long   mmio, mmio_len, mmio_flags;
1209
1210         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1211         pio = pci_resource_start(ha->pdev, 0);
1212         pio_len = pci_resource_len(ha->pdev, 0);
1213         pio_flags = pci_resource_flags(ha->pdev, 0);
1214         if (pio_flags & IORESOURCE_IO) {
1215                 if (pio_len < MIN_IOBASE_LEN) {
1216                         qla_printk(KERN_WARNING, ha,
1217                             "Invalid PCI I/O region size (%s)...\n",
1218                                 pci_name(ha->pdev));
1219                         pio = 0;
1220                 }
1221         } else {
1222                 qla_printk(KERN_WARNING, ha,
1223                     "region #0 not a PIO resource (%s)...\n",
1224                     pci_name(ha->pdev));
1225                 pio = 0;
1226         }
1227
1228         /* Use MMIO operations for all accesses. */
1229         mmio = pci_resource_start(ha->pdev, 1);
1230         mmio_len = pci_resource_len(ha->pdev, 1);
1231         mmio_flags = pci_resource_flags(ha->pdev, 1);
1232
1233         if (!(mmio_flags & IORESOURCE_MEM)) {
1234                 qla_printk(KERN_ERR, ha,
1235                     "region #0 not an MMIO resource (%s), aborting\n",
1236                     pci_name(ha->pdev));
1237                 goto iospace_error_exit;
1238         }
1239         if (mmio_len < MIN_IOBASE_LEN) {
1240                 qla_printk(KERN_ERR, ha,
1241                     "Invalid PCI mem region size (%s), aborting\n",
1242                         pci_name(ha->pdev));
1243                 goto iospace_error_exit;
1244         }
1245
1246         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1247                 qla_printk(KERN_WARNING, ha,
1248                     "Failed to reserve PIO/MMIO regions (%s)\n",
1249                     pci_name(ha->pdev));
1250
1251                 goto iospace_error_exit;
1252         }
1253
1254         ha->pio_address = pio;
1255         ha->pio_length = pio_len;
1256         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1257         if (!ha->iobase) {
1258                 qla_printk(KERN_ERR, ha,
1259                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1260
1261                 goto iospace_error_exit;
1262         }
1263
1264         return (0);
1265
1266 iospace_error_exit:
1267         return (-ENOMEM);
1268 }
1269
1270 static void
1271 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1272 {
1273         unsigned long flags = 0;
1274         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1275
1276         spin_lock_irqsave(&ha->hardware_lock, flags);
1277         ha->interrupts_on = 1;
1278         /* enable risc and host interrupts */
1279         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1280         RD_REG_WORD(&reg->ictrl);
1281         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1282
1283 }
1284
1285 static void
1286 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1287 {
1288         unsigned long flags = 0;
1289         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1290
1291         spin_lock_irqsave(&ha->hardware_lock, flags);
1292         ha->interrupts_on = 0;
1293         /* disable risc and host interrupts */
1294         WRT_REG_WORD(&reg->ictrl, 0);
1295         RD_REG_WORD(&reg->ictrl);
1296         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1297 }
1298
1299 static void
1300 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1301 {
1302         unsigned long flags = 0;
1303         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1304
1305         spin_lock_irqsave(&ha->hardware_lock, flags);
1306         ha->interrupts_on = 1;
1307         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1308         RD_REG_DWORD(&reg->ictrl);
1309         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1310 }
1311
1312 static void
1313 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1314 {
1315         unsigned long flags = 0;
1316         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1317
1318         spin_lock_irqsave(&ha->hardware_lock, flags);
1319         ha->interrupts_on = 0;
1320         WRT_REG_DWORD(&reg->ictrl, 0);
1321         RD_REG_DWORD(&reg->ictrl);
1322         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1323 }
1324
1325 /*
1326  * PCI driver interface
1327  */
1328 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1329 {
1330         int     ret = -ENODEV;
1331         device_reg_t __iomem *reg;
1332         struct Scsi_Host *host;
1333         scsi_qla_host_t *ha;
1334         unsigned long   flags = 0;
1335         unsigned long   wait_switch = 0;
1336         char pci_info[20];
1337         char fw_str[30];
1338         fc_port_t *fcport;
1339         struct scsi_host_template *sht;
1340
1341         if (pci_enable_device(pdev))
1342                 goto probe_out;
1343
1344         sht = &qla2x00_driver_template;
1345         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1346             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1347                 sht = &qla24xx_driver_template;
1348         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1349         if (host == NULL) {
1350                 printk(KERN_WARNING
1351                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1352                 goto probe_disable_device;
1353         }
1354
1355         /* Clear our data area */
1356         ha = (scsi_qla_host_t *)host->hostdata;
1357         memset(ha, 0, sizeof(scsi_qla_host_t));
1358
1359         ha->pdev = pdev;
1360         ha->host = host;
1361         ha->host_no = host->host_no;
1362         ha->brd_info = brd_info;
1363         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1364
1365         /* Set ISP-type information. */
1366         qla2x00_set_isp_flags(ha);
1367
1368         /* Configure PCI I/O space */
1369         ret = qla2x00_iospace_config(ha);
1370         if (ret)
1371                 goto probe_failed;
1372
1373         qla_printk(KERN_INFO, ha,
1374             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1375             ha->iobase);
1376
1377         spin_lock_init(&ha->hardware_lock);
1378
1379         ha->prev_topology = 0;
1380         ha->ports = MAX_BUSES;
1381         ha->init_cb_size = sizeof(init_cb_t);
1382         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1383         ha->link_data_rate = LDR_UNKNOWN;
1384         ha->optrom_size = OPTROM_SIZE_2300;
1385
1386         /* Assign ISP specific operations. */
1387         ha->isp_ops.pci_config          = qla2100_pci_config;
1388         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1389         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1390         ha->isp_ops.config_rings        = qla2x00_config_rings;
1391         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1392         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1393         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1394         ha->isp_ops.load_risc           = qla2x00_load_risc;
1395         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1396         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1397         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1398         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1399         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1400         ha->isp_ops.abort_command       = qla2x00_abort_command;
1401         ha->isp_ops.abort_target        = qla2x00_abort_target;
1402         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1403         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1404         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1405         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1406         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1407         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1408         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1409         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1410         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1411         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1412         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1413         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1414         if (IS_QLA2100(ha)) {
1415                 host->max_id = MAX_TARGETS_2100;
1416                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1417                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1418                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1419                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1420                 host->sg_tablesize = 32;
1421                 ha->gid_list_info_size = 4;
1422         } else if (IS_QLA2200(ha)) {
1423                 host->max_id = MAX_TARGETS_2200;
1424                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1425                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1426                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1427                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1428                 ha->gid_list_info_size = 4;
1429         } else if (IS_QLA23XX(ha)) {
1430                 host->max_id = MAX_TARGETS_2200;
1431                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1432                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1433                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1434                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1435                 ha->isp_ops.pci_config = qla2300_pci_config;
1436                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1437                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1438                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1439                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1440                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1441                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1442                 ha->gid_list_info_size = 6;
1443                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1444                         ha->optrom_size = OPTROM_SIZE_2322;
1445         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1446                 host->max_id = MAX_TARGETS_2200;
1447                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1448                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1449                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1450                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1451                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1452                 ha->mgmt_svr_loop_id = 10;
1453                 ha->isp_ops.pci_config = qla24xx_pci_config;
1454                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1455                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1456                 ha->isp_ops.config_rings = qla24xx_config_rings;
1457                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1458                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1459                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1460                 ha->isp_ops.load_risc = qla24xx_load_risc;
1461 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1462                 if (ql2xfwloadflash)
1463                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1464 #endif
1465                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1466                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1467                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1468                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1469                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1470                 ha->isp_ops.abort_command = qla24xx_abort_command;
1471                 ha->isp_ops.abort_target = qla24xx_abort_target;
1472                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1473                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1474                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1475                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1476                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1477                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1478                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1479                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1480                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1481                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1482                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1483                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1484                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1485                 ha->gid_list_info_size = 8;
1486                 ha->optrom_size = OPTROM_SIZE_24XX;
1487         }
1488         host->can_queue = ha->request_q_length + 128;
1489
1490         /* load the F/W, read paramaters, and init the H/W */
1491         ha->instance = num_hosts;
1492
1493         init_MUTEX(&ha->mbx_cmd_sem);
1494         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1495
1496         INIT_LIST_HEAD(&ha->list);
1497         INIT_LIST_HEAD(&ha->fcports);
1498         INIT_LIST_HEAD(&ha->rscn_fcports);
1499
1500         /*
1501          * These locks are used to prevent more than one CPU
1502          * from modifying the queue at the same time. The
1503          * higher level "host_lock" will reduce most
1504          * contention for these locks.
1505          */
1506         spin_lock_init(&ha->mbx_reg_lock);
1507
1508         qla2x00_config_dma_addressing(ha);
1509         if (qla2x00_mem_alloc(ha)) {
1510                 qla_printk(KERN_WARNING, ha,
1511                     "[ERROR] Failed to allocate memory for adapter\n");
1512
1513                 ret = -ENOMEM;
1514                 goto probe_failed;
1515         }
1516
1517         if (qla2x00_initialize_adapter(ha) &&
1518             !(ha->device_flags & DFLG_NO_CABLE)) {
1519
1520                 qla_printk(KERN_WARNING, ha,
1521                     "Failed to initialize adapter\n");
1522
1523                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1524                     "Adapter flags %x.\n",
1525                     ha->host_no, ha->device_flags));
1526
1527                 ret = -ENODEV;
1528                 goto probe_failed;
1529         }
1530
1531         /*
1532          * Startup the kernel thread for this host adapter
1533          */
1534         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1535                         "%s_dpc", ha->host_str);
1536         if (IS_ERR(ha->dpc_thread)) {
1537                 qla_printk(KERN_WARNING, ha,
1538                     "Unable to start DPC thread!\n");
1539                 ret = PTR_ERR(ha->dpc_thread);
1540                 goto probe_failed;
1541         }
1542
1543         host->this_id = 255;
1544         host->cmd_per_lun = 3;
1545         host->unique_id = ha->instance;
1546         host->max_cmd_len = MAX_CMDSZ;
1547         host->max_channel = ha->ports - 1;
1548         host->max_lun = MAX_LUNS;
1549         host->transportt = qla2xxx_transport_template;
1550
1551         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1552             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1553         if (ret) {
1554                 qla_printk(KERN_WARNING, ha,
1555                     "Failed to reserve interrupt %d already in use.\n",
1556                     pdev->irq);
1557                 goto probe_failed;
1558         }
1559         host->irq = pdev->irq;
1560
1561         /* Initialized the timer */
1562         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1563
1564         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1565             ha->host_no, ha));
1566
1567         ha->isp_ops.disable_intrs(ha);
1568
1569         spin_lock_irqsave(&ha->hardware_lock, flags);
1570         reg = ha->iobase;
1571         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1572                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1573                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1574         } else {
1575                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1576                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1577                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1578
1579                 /* Enable proper parity */
1580                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1581                         if (IS_QLA2300(ha))
1582                                 /* SRAM parity */
1583                                 WRT_REG_WORD(&reg->isp.hccr,
1584                                     (HCCR_ENABLE_PARITY + 0x1));
1585                         else
1586                                 /* SRAM, Instruction RAM and GP RAM parity */
1587                                 WRT_REG_WORD(&reg->isp.hccr,
1588                                     (HCCR_ENABLE_PARITY + 0x7));
1589                 }
1590         }
1591         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1592
1593         ha->isp_ops.enable_intrs(ha);
1594
1595         /* v2.19.5b6 */
1596         /*
1597          * Wait around max loop_reset_delay secs for the devices to come
1598          * on-line. We don't want Linux scanning before we are ready.
1599          *
1600          */
1601         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1602             time_before(jiffies,wait_switch) &&
1603              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1604              && (ha->device_flags & SWITCH_FOUND) ;) {
1605
1606                 qla2x00_check_fabric_devices(ha);
1607
1608                 msleep(10);
1609         }
1610
1611         pci_set_drvdata(pdev, ha);
1612         ha->flags.init_done = 1;
1613         num_hosts++;
1614
1615         ret = scsi_add_host(host, &pdev->dev);
1616         if (ret)
1617                 goto probe_failed;
1618
1619         qla2x00_alloc_sysfs_attr(ha);
1620
1621         qla2x00_init_host_attr(ha);
1622
1623         qla_printk(KERN_INFO, ha, "\n"
1624             " QLogic Fibre Channel HBA Driver: %s\n"
1625             "  QLogic %s - %s\n"
1626             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1627             qla2x00_version_str, ha->model_number,
1628             ha->model_desc ? ha->model_desc: "", pdev->device,
1629             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1630             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1631             ha->isp_ops.fw_version_str(ha, fw_str));
1632
1633         /* Go with fc_rport registration. */
1634         list_for_each_entry(fcport, &ha->fcports, list)
1635                 qla2x00_reg_remote_port(ha, fcport);
1636
1637         return 0;
1638
1639 probe_failed:
1640         qla2x00_free_device(ha);
1641
1642         scsi_host_put(host);
1643
1644 probe_disable_device:
1645         pci_disable_device(pdev);
1646
1647 probe_out:
1648         return ret;
1649 }
1650 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1651
1652 void qla2x00_remove_one(struct pci_dev *pdev)
1653 {
1654         scsi_qla_host_t *ha;
1655
1656         ha = pci_get_drvdata(pdev);
1657
1658         qla2x00_free_sysfs_attr(ha);
1659
1660         fc_remove_host(ha->host);
1661
1662         scsi_remove_host(ha->host);
1663
1664         qla2x00_free_device(ha);
1665
1666         scsi_host_put(ha->host);
1667
1668         pci_set_drvdata(pdev, NULL);
1669 }
1670 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1671
1672 static void
1673 qla2x00_free_device(scsi_qla_host_t *ha)
1674 {
1675         /* Abort any outstanding IO descriptors. */
1676         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1677                 qla2x00_cancel_io_descriptors(ha);
1678
1679         /* Disable timer */
1680         if (ha->timer_active)
1681                 qla2x00_stop_timer(ha);
1682
1683         /* Kill the kernel thread for this host */
1684         if (ha->dpc_thread) {
1685                 struct task_struct *t = ha->dpc_thread;
1686
1687                 /*
1688                  * qla2xxx_wake_dpc checks for ->dpc_thread
1689                  * so we need to zero it out.
1690                  */
1691                 ha->dpc_thread = NULL;
1692                 kthread_stop(t);
1693         }
1694
1695         /* Stop currently executing firmware. */
1696         qla2x00_stop_firmware(ha);
1697
1698         /* turn-off interrupts on the card */
1699         if (ha->interrupts_on)
1700                 ha->isp_ops.disable_intrs(ha);
1701
1702         qla2x00_mem_free(ha);
1703
1704         ha->flags.online = 0;
1705
1706         /* Detach interrupts */
1707         if (ha->pdev->irq)
1708                 free_irq(ha->pdev->irq, ha);
1709
1710         /* release io space registers  */
1711         if (ha->iobase)
1712                 iounmap(ha->iobase);
1713         pci_release_regions(ha->pdev);
1714
1715         pci_disable_device(ha->pdev);
1716 }
1717
1718 static inline void
1719 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1720     int defer)
1721 {
1722         unsigned long flags;
1723         struct fc_rport *rport;
1724
1725         if (!fcport->rport)
1726                 return;
1727
1728         rport = fcport->rport;
1729         if (defer) {
1730                 spin_lock_irqsave(&fcport->rport_lock, flags);
1731                 fcport->drport = rport;
1732                 fcport->rport = NULL;
1733                 *(fc_port_t **)rport->dd_data = NULL;
1734                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1735                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1736         } else {
1737                 spin_lock_irqsave(&fcport->rport_lock, flags);
1738                 fcport->rport = NULL;
1739                 *(fc_port_t **)rport->dd_data = NULL;
1740                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1741                 fc_remote_port_delete(rport);
1742         }
1743 }
1744
1745 /*
1746  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1747  *
1748  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1749  *
1750  * Return: None.
1751  *
1752  * Context:
1753  */
1754 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1755     int do_login, int defer)
1756 {
1757         if (atomic_read(&fcport->state) == FCS_ONLINE)
1758                 qla2x00_schedule_rport_del(ha, fcport, defer);
1759
1760         /*
1761          * We may need to retry the login, so don't change the state of the
1762          * port but do the retries.
1763          */
1764         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1765                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1766
1767         if (!do_login)
1768                 return;
1769
1770         if (fcport->login_retry == 0) {
1771                 fcport->login_retry = ha->login_retry_count;
1772                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1773
1774                 DEBUG(printk("scsi(%ld): Port login retry: "
1775                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1776                     "id = 0x%04x retry cnt=%d\n",
1777                     ha->host_no,
1778                     fcport->port_name[0],
1779                     fcport->port_name[1],
1780                     fcport->port_name[2],
1781                     fcport->port_name[3],
1782                     fcport->port_name[4],
1783                     fcport->port_name[5],
1784                     fcport->port_name[6],
1785                     fcport->port_name[7],
1786                     fcport->loop_id,
1787                     fcport->login_retry));
1788         }
1789 }
1790
1791 /*
1792  * qla2x00_mark_all_devices_lost
1793  *      Updates fcport state when device goes offline.
1794  *
1795  * Input:
1796  *      ha = adapter block pointer.
1797  *      fcport = port structure pointer.
1798  *
1799  * Return:
1800  *      None.
1801  *
1802  * Context:
1803  */
1804 void
1805 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1806 {
1807         fc_port_t *fcport;
1808
1809         list_for_each_entry(fcport, &ha->fcports, list) {
1810                 if (fcport->port_type != FCT_TARGET)
1811                         continue;
1812
1813                 /*
1814                  * No point in marking the device as lost, if the device is
1815                  * already DEAD.
1816                  */
1817                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1818                         continue;
1819                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1820                         qla2x00_schedule_rport_del(ha, fcport, defer);
1821                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1822         }
1823
1824         if (defer)
1825                 qla2xxx_wake_dpc(ha);
1826 }
1827
1828 /*
1829 * qla2x00_mem_alloc
1830 *      Allocates adapter memory.
1831 *
1832 * Returns:
1833 *      0  = success.
1834 *      1  = failure.
1835 */
1836 static uint8_t
1837 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1838 {
1839         char    name[16];
1840         uint8_t   status = 1;
1841         int     retry= 10;
1842
1843         do {
1844                 /*
1845                  * This will loop only once if everything goes well, else some
1846                  * number of retries will be performed to get around a kernel
1847                  * bug where available mem is not allocated until after a
1848                  * little delay and a retry.
1849                  */
1850                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1851                     (ha->request_q_length + 1) * sizeof(request_t),
1852                     &ha->request_dma, GFP_KERNEL);
1853                 if (ha->request_ring == NULL) {
1854                         qla_printk(KERN_WARNING, ha,
1855                             "Memory Allocation failed - request_ring\n");
1856
1857                         qla2x00_mem_free(ha);
1858                         msleep(100);
1859
1860                         continue;
1861                 }
1862
1863                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1864                     (ha->response_q_length + 1) * sizeof(response_t),
1865                     &ha->response_dma, GFP_KERNEL);
1866                 if (ha->response_ring == NULL) {
1867                         qla_printk(KERN_WARNING, ha,
1868                             "Memory Allocation failed - response_ring\n");
1869
1870                         qla2x00_mem_free(ha);
1871                         msleep(100);
1872
1873                         continue;
1874                 }
1875
1876                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1877                     &ha->gid_list_dma, GFP_KERNEL);
1878                 if (ha->gid_list == NULL) {
1879                         qla_printk(KERN_WARNING, ha,
1880                             "Memory Allocation failed - gid_list\n");
1881
1882                         qla2x00_mem_free(ha);
1883                         msleep(100);
1884
1885                         continue;
1886                 }
1887
1888                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1889                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1890                 if (ha->rlc_rsp == NULL) {
1891                         qla_printk(KERN_WARNING, ha,
1892                                 "Memory Allocation failed - rlc");
1893
1894                         qla2x00_mem_free(ha);
1895                         msleep(100);
1896
1897                         continue;
1898                 }
1899
1900                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1901                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1902                     DMA_POOL_SIZE, 8, 0);
1903                 if (ha->s_dma_pool == NULL) {
1904                         qla_printk(KERN_WARNING, ha,
1905                             "Memory Allocation failed - s_dma_pool\n");
1906
1907                         qla2x00_mem_free(ha);
1908                         msleep(100);
1909
1910                         continue;
1911                 }
1912
1913                 /* get consistent memory allocated for init control block */
1914                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1915                     &ha->init_cb_dma);
1916                 if (ha->init_cb == NULL) {
1917                         qla_printk(KERN_WARNING, ha,
1918                             "Memory Allocation failed - init_cb\n");
1919
1920                         qla2x00_mem_free(ha);
1921                         msleep(100);
1922
1923                         continue;
1924                 }
1925                 memset(ha->init_cb, 0, ha->init_cb_size);
1926
1927                 /* Get consistent memory allocated for Get Port Database cmd */
1928                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1929                     &ha->iodesc_pd_dma);
1930                 if (ha->iodesc_pd == NULL) {
1931                         /* error */
1932                         qla_printk(KERN_WARNING, ha,
1933                             "Memory Allocation failed - iodesc_pd\n");
1934
1935                         qla2x00_mem_free(ha);
1936                         msleep(100);
1937
1938                         continue;
1939                 }
1940                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1941
1942                 /* Allocate ioctl related memory. */
1943                 if (qla2x00_alloc_ioctl_mem(ha)) {
1944                         qla_printk(KERN_WARNING, ha,
1945                             "Memory Allocation failed - ioctl_mem\n");
1946
1947                         qla2x00_mem_free(ha);
1948                         msleep(100);
1949
1950                         continue;
1951                 }
1952
1953                 if (qla2x00_allocate_sp_pool(ha)) {
1954                         qla_printk(KERN_WARNING, ha,
1955                             "Memory Allocation failed - "
1956                             "qla2x00_allocate_sp_pool()\n");
1957
1958                         qla2x00_mem_free(ha);
1959                         msleep(100);
1960
1961                         continue;
1962                 }
1963
1964                 /* Allocate memory for SNS commands */
1965                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1966                         /* Get consistent memory allocated for SNS commands */
1967                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1968                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1969                             GFP_KERNEL);
1970                         if (ha->sns_cmd == NULL) {
1971                                 /* error */
1972                                 qla_printk(KERN_WARNING, ha,
1973                                     "Memory Allocation failed - sns_cmd\n");
1974
1975                                 qla2x00_mem_free(ha);
1976                                 msleep(100);
1977
1978                                 continue;
1979                         }
1980                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1981                 } else {
1982                         /* Get consistent memory allocated for MS IOCB */
1983                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1984                             &ha->ms_iocb_dma);
1985                         if (ha->ms_iocb == NULL) {
1986                                 /* error */
1987                                 qla_printk(KERN_WARNING, ha,
1988                                     "Memory Allocation failed - ms_iocb\n");
1989
1990                                 qla2x00_mem_free(ha);
1991                                 msleep(100);
1992
1993                                 continue;
1994                         }
1995                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1996
1997                         /*
1998                          * Get consistent memory allocated for CT SNS
1999                          * commands
2000                          */
2001                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2002                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2003                             GFP_KERNEL);
2004                         if (ha->ct_sns == NULL) {
2005                                 /* error */
2006                                 qla_printk(KERN_WARNING, ha,
2007                                     "Memory Allocation failed - ct_sns\n");
2008
2009                                 qla2x00_mem_free(ha);
2010                                 msleep(100);
2011
2012                                 continue;
2013                         }
2014                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2015                 }
2016
2017                 /* Done all allocations without any error. */
2018                 status = 0;
2019
2020         } while (retry-- && status != 0);
2021
2022         if (status) {
2023                 printk(KERN_WARNING
2024                         "%s(): **** FAILED ****\n", __func__);
2025         }
2026
2027         return(status);
2028 }
2029
2030 /*
2031 * qla2x00_mem_free
2032 *      Frees all adapter allocated memory.
2033 *
2034 * Input:
2035 *      ha = adapter block pointer.
2036 */
2037 static void
2038 qla2x00_mem_free(scsi_qla_host_t *ha)
2039 {
2040         struct list_head        *fcpl, *fcptemp;
2041         fc_port_t       *fcport;
2042
2043         if (ha == NULL) {
2044                 /* error */
2045                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2046                 return;
2047         }
2048
2049         /* free ioctl memory */
2050         qla2x00_free_ioctl_mem(ha);
2051
2052         /* free sp pool */
2053         qla2x00_free_sp_pool(ha);
2054
2055         if (ha->sns_cmd)
2056                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2057                     ha->sns_cmd, ha->sns_cmd_dma);
2058
2059         if (ha->ct_sns)
2060                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2061                     ha->ct_sns, ha->ct_sns_dma);
2062
2063         if (ha->ms_iocb)
2064                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2065
2066         if (ha->iodesc_pd)
2067                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2068
2069         if (ha->init_cb)
2070                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2071
2072         if (ha->s_dma_pool)
2073                 dma_pool_destroy(ha->s_dma_pool);
2074
2075         if (ha->rlc_rsp)
2076                 dma_free_coherent(&ha->pdev->dev,
2077                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2078                     ha->rlc_rsp_dma);
2079
2080         if (ha->gid_list)
2081                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2082                     ha->gid_list_dma);
2083
2084         if (ha->response_ring)
2085                 dma_free_coherent(&ha->pdev->dev,
2086                     (ha->response_q_length + 1) * sizeof(response_t),
2087                     ha->response_ring, ha->response_dma);
2088
2089         if (ha->request_ring)
2090                 dma_free_coherent(&ha->pdev->dev,
2091                     (ha->request_q_length + 1) * sizeof(request_t),
2092                     ha->request_ring, ha->request_dma);
2093
2094         ha->sns_cmd = NULL;
2095         ha->sns_cmd_dma = 0;
2096         ha->ct_sns = NULL;
2097         ha->ct_sns_dma = 0;
2098         ha->ms_iocb = NULL;
2099         ha->ms_iocb_dma = 0;
2100         ha->iodesc_pd = NULL;
2101         ha->iodesc_pd_dma = 0;
2102         ha->init_cb = NULL;
2103         ha->init_cb_dma = 0;
2104
2105         ha->s_dma_pool = NULL;
2106
2107         ha->rlc_rsp = NULL;
2108         ha->rlc_rsp_dma = 0;
2109         ha->gid_list = NULL;
2110         ha->gid_list_dma = 0;
2111
2112         ha->response_ring = NULL;
2113         ha->response_dma = 0;
2114         ha->request_ring = NULL;
2115         ha->request_dma = 0;
2116
2117         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2118                 fcport = list_entry(fcpl, fc_port_t, list);
2119
2120                 /* fc ports */
2121                 list_del_init(&fcport->list);
2122                 kfree(fcport);
2123         }
2124         INIT_LIST_HEAD(&ha->fcports);
2125
2126         if (ha->fw_dump)
2127                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2128
2129         vfree(ha->fw_dump24);
2130
2131         vfree(ha->fw_dump_buffer);
2132
2133         ha->fw_dump = NULL;
2134         ha->fw_dump24 = NULL;
2135         ha->fw_dumped = 0;
2136         ha->fw_dump_reading = 0;
2137         ha->fw_dump_buffer = NULL;
2138
2139         vfree(ha->optrom_buffer);
2140 }
2141
2142 /*
2143  * qla2x00_allocate_sp_pool
2144  *       This routine is called during initialization to allocate
2145  *       memory for local srb_t.
2146  *
2147  * Input:
2148  *       ha   = adapter block pointer.
2149  *
2150  * Context:
2151  *      Kernel context.
2152  *
2153  * Note: Sets the ref_count for non Null sp to one.
2154  */
2155 static int
2156 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2157 {
2158         int      rval;
2159
2160         rval = QLA_SUCCESS;
2161         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2162         if (ha->srb_mempool == NULL) {
2163                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2164                 rval = QLA_FUNCTION_FAILED;
2165         }
2166         return (rval);
2167 }
2168
2169 /*
2170  *  This routine frees all adapter allocated memory.
2171  *
2172  */
2173 static void
2174 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2175 {
2176         if (ha->srb_mempool) {
2177                 mempool_destroy(ha->srb_mempool);
2178                 ha->srb_mempool = NULL;
2179         }
2180 }
2181
2182 /**************************************************************************
2183 * qla2x00_do_dpc
2184 *   This kernel thread is a task that is schedule by the interrupt handler
2185 *   to perform the background processing for interrupts.
2186 *
2187 * Notes:
2188 * This task always run in the context of a kernel thread.  It
2189 * is kick-off by the driver's detect code and starts up
2190 * up one per adapter. It immediately goes to sleep and waits for
2191 * some fibre event.  When either the interrupt handler or
2192 * the timer routine detects a event it will one of the task
2193 * bits then wake us up.
2194 **************************************************************************/
2195 static int
2196 qla2x00_do_dpc(void *data)
2197 {
2198         scsi_qla_host_t *ha;
2199         fc_port_t       *fcport;
2200         uint8_t         status;
2201         uint16_t        next_loopid;
2202
2203         ha = (scsi_qla_host_t *)data;
2204
2205         set_user_nice(current, -20);
2206
2207         while (!kthread_should_stop()) {
2208                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2209
2210                 set_current_state(TASK_INTERRUPTIBLE);
2211                 schedule();
2212                 __set_current_state(TASK_RUNNING);
2213
2214                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2215
2216                 /* Initialization not yet finished. Don't do anything yet. */
2217                 if (!ha->flags.init_done)
2218                         continue;
2219
2220                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2221
2222                 ha->dpc_active = 1;
2223
2224                 if (ha->flags.mbox_busy) {
2225                         ha->dpc_active = 0;
2226                         continue;
2227                 }
2228
2229                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2230
2231                         DEBUG(printk("scsi(%ld): dpc: sched "
2232                             "qla2x00_abort_isp ha = %p\n",
2233                             ha->host_no, ha));
2234                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2235                             &ha->dpc_flags))) {
2236
2237                                 if (qla2x00_abort_isp(ha)) {
2238                                         /* failed. retry later */
2239                                         set_bit(ISP_ABORT_NEEDED,
2240                                             &ha->dpc_flags);
2241                                 }
2242                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2243                         }
2244                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2245                             ha->host_no));
2246                 }
2247
2248                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2249                         qla2x00_update_fcports(ha);
2250
2251                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2252                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2253                             ha->host_no));
2254                         qla2x00_loop_reset(ha);
2255                 }
2256
2257                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2258                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2259
2260                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2261                             ha->host_no));
2262
2263                         qla2x00_rst_aen(ha);
2264                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2265                 }
2266
2267                 /* Retry each device up to login retry count */
2268                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2269                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2270                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2271
2272                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2273                             ha->host_no));
2274
2275                         next_loopid = 0;
2276                         list_for_each_entry(fcport, &ha->fcports, list) {
2277                                 if (fcport->port_type != FCT_TARGET)
2278                                         continue;
2279
2280                                 /*
2281                                  * If the port is not ONLINE then try to login
2282                                  * to it if we haven't run out of retries.
2283                                  */
2284                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2285                                     fcport->login_retry) {
2286
2287                                         fcport->login_retry--;
2288                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2289                                                 if (fcport->flags &
2290                                                     FCF_TAPE_PRESENT)
2291                                                         ha->isp_ops.fabric_logout(
2292                                                             ha, fcport->loop_id,
2293                                                             fcport->d_id.b.domain,
2294                                                             fcport->d_id.b.area,
2295                                                             fcport->d_id.b.al_pa);
2296                                                 status = qla2x00_fabric_login(
2297                                                     ha, fcport, &next_loopid);
2298                                         } else
2299                                                 status =
2300                                                     qla2x00_local_device_login(
2301                                                         ha, fcport);
2302
2303                                         if (status == QLA_SUCCESS) {
2304                                                 fcport->old_loop_id = fcport->loop_id;
2305
2306                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2307                                                     ha->host_no, fcport->loop_id));
2308
2309                                                 qla2x00_update_fcport(ha,
2310                                                     fcport);
2311                                         } else if (status == 1) {
2312                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2313                                                 /* retry the login again */
2314                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2315                                                     ha->host_no,
2316                                                     fcport->login_retry, fcport->loop_id));
2317                                         } else {
2318                                                 fcport->login_retry = 0;
2319                                         }
2320                                 }
2321                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2322                                         break;
2323                         }
2324                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2325                             ha->host_no));
2326                 }
2327
2328                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2329                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2330
2331                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2332                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2333                             ha->host_no));
2334
2335                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2336
2337                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2338                             ha->host_no));
2339                 }
2340
2341                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2342
2343                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2344                             ha->host_no));
2345
2346                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2347                             &ha->dpc_flags))) {
2348
2349                                 qla2x00_loop_resync(ha);
2350
2351                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2352                         }
2353
2354                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2355                             ha->host_no));
2356                 }
2357
2358                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2359
2360                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2361                             ha->host_no));
2362
2363                         qla2x00_rescan_fcports(ha);
2364
2365                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2366                             "end.\n",
2367                             ha->host_no));
2368                 }
2369
2370                 if (!ha->interrupts_on)
2371                         ha->isp_ops.enable_intrs(ha);
2372
2373                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2374                         ha->isp_ops.beacon_blink(ha);
2375
2376                 ha->dpc_active = 0;
2377         } /* End of while(1) */
2378
2379         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2380
2381         /*
2382          * Make sure that nobody tries to wake us up again.
2383          */
2384         ha->dpc_active = 0;
2385
2386         return 0;
2387 }
2388
2389 void
2390 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2391 {
2392         if (ha->dpc_thread)
2393                 wake_up_process(ha->dpc_thread);
2394 }
2395
2396 /*
2397 *  qla2x00_rst_aen
2398 *      Processes asynchronous reset.
2399 *
2400 * Input:
2401 *      ha  = adapter block pointer.
2402 */
2403 static void
2404 qla2x00_rst_aen(scsi_qla_host_t *ha)
2405 {
2406         if (ha->flags.online && !ha->flags.reset_active &&
2407             !atomic_read(&ha->loop_down_timer) &&
2408             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2409                 do {
2410                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2411
2412                         /*
2413                          * Issue marker command only when we are going to start
2414                          * the I/O.
2415                          */
2416                         ha->marker_needed = 1;
2417                 } while (!atomic_read(&ha->loop_down_timer) &&
2418                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2419         }
2420 }
2421
2422 static void
2423 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2424 {
2425         struct scsi_cmnd *cmd = sp->cmd;
2426
2427         if (sp->flags & SRB_DMA_VALID) {
2428                 if (cmd->use_sg) {
2429                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2430                             cmd->use_sg, cmd->sc_data_direction);
2431                 } else if (cmd->request_bufflen) {
2432                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2433                             cmd->request_bufflen, cmd->sc_data_direction);
2434                 }
2435                 sp->flags &= ~SRB_DMA_VALID;
2436         }
2437         CMD_SP(cmd) = NULL;
2438 }
2439
2440 void
2441 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2442 {
2443         struct scsi_cmnd *cmd = sp->cmd;
2444
2445         qla2x00_sp_free_dma(ha, sp);
2446
2447         mempool_free(sp, ha->srb_mempool);
2448
2449         cmd->scsi_done(cmd);
2450 }
2451
2452 /**************************************************************************
2453 *   qla2x00_timer
2454 *
2455 * Description:
2456 *   One second timer
2457 *
2458 * Context: Interrupt
2459 ***************************************************************************/
2460 static void
2461 qla2x00_timer(scsi_qla_host_t *ha)
2462 {
2463         unsigned long   cpu_flags = 0;
2464         fc_port_t       *fcport;
2465         int             start_dpc = 0;
2466         int             index;
2467         srb_t           *sp;
2468         int             t;
2469
2470         /*
2471          * Ports - Port down timer.
2472          *
2473          * Whenever, a port is in the LOST state we start decrementing its port
2474          * down timer every second until it reaches zero. Once  it reaches zero
2475          * the port it marked DEAD.
2476          */
2477         t = 0;
2478         list_for_each_entry(fcport, &ha->fcports, list) {
2479                 if (fcport->port_type != FCT_TARGET)
2480                         continue;
2481
2482                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2483
2484                         if (atomic_read(&fcport->port_down_timer) == 0)
2485                                 continue;
2486
2487                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2488                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2489
2490                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2491                             "%d remaining\n",
2492                             ha->host_no,
2493                             t, atomic_read(&fcport->port_down_timer)));
2494                 }
2495                 t++;
2496         } /* End of for fcport  */
2497
2498
2499         /* Loop down handler. */
2500         if (atomic_read(&ha->loop_down_timer) > 0 &&
2501             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2502
2503                 if (atomic_read(&ha->loop_down_timer) ==
2504                     ha->loop_down_abort_time) {
2505
2506                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2507                             "queues before time expire\n",
2508                             ha->host_no));
2509
2510                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2511                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2512
2513                         /* Schedule an ISP abort to return any tape commands. */
2514                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2515                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2516                             index++) {
2517                                 fc_port_t *sfcp;
2518
2519                                 sp = ha->outstanding_cmds[index];
2520                                 if (!sp)
2521                                         continue;
2522                                 sfcp = sp->fcport;
2523                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2524                                         continue;
2525
2526                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2527                                 break;
2528                         }
2529                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2530
2531                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2532                         start_dpc++;
2533                 }
2534
2535                 /* if the loop has been down for 4 minutes, reinit adapter */
2536                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2537                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2538                             "restarting queues.\n",
2539                             ha->host_no));
2540
2541                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2542                         start_dpc++;
2543
2544                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2545                                 DEBUG(printk("scsi(%ld): Loop down - "
2546                                     "aborting ISP.\n",
2547                                     ha->host_no));
2548                                 qla_printk(KERN_WARNING, ha,
2549                                     "Loop down - aborting ISP.\n");
2550
2551                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2552                         }
2553                 }
2554                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2555                     ha->host_no,
2556                     atomic_read(&ha->loop_down_timer)));
2557         }
2558
2559         /* Check if beacon LED needs to be blinked */
2560         if (ha->beacon_blink_led == 1) {
2561                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2562                 start_dpc++;
2563         }
2564
2565         /* Schedule the DPC routine if needed */
2566         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2567             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2568             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2569             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2570             start_dpc ||
2571             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2572             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2573             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2574             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2575                 qla2xxx_wake_dpc(ha);
2576
2577         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2578 }
2579
2580 /* XXX(hch): crude hack to emulate a down_timeout() */
2581 int
2582 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2583 {
2584         const unsigned int step = 100; /* msecs */
2585         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2586
2587         do {
2588                 if (!down_trylock(sema))
2589                         return 0;
2590                 if (msleep_interruptible(step))
2591                         break;
2592         } while (--iterations >= 0);
2593
2594         return -ETIMEDOUT;
2595 }
2596
2597 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2598
2599 #define qla2x00_release_firmware()      do { } while (0)
2600 #define qla2x00_pci_module_init()       (0)
2601 #define qla2x00_pci_module_exit()       do { } while (0)
2602
2603 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2604
2605 /* Firmware interface routines. */
2606
2607 #define FW_BLOBS        5
2608 #define FW_ISP21XX      0
2609 #define FW_ISP22XX      1
2610 #define FW_ISP2300      2
2611 #define FW_ISP2322      3
2612 #define FW_ISP24XX      4
2613
2614 static DECLARE_MUTEX(qla_fw_lock);
2615
2616 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2617         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2618         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2619         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2620         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2621         { .name = "ql2400_fw.bin", },
2622 };
2623
2624 struct fw_blob *
2625 qla2x00_request_firmware(scsi_qla_host_t *ha)
2626 {
2627         struct fw_blob *blob;
2628
2629         blob = NULL;
2630         if (IS_QLA2100(ha)) {
2631                 blob = &qla_fw_blobs[FW_ISP21XX];
2632         } else if (IS_QLA2200(ha)) {
2633                 blob = &qla_fw_blobs[FW_ISP22XX];
2634         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2635                 blob = &qla_fw_blobs[FW_ISP2300];
2636         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2637                 blob = &qla_fw_blobs[FW_ISP2322];
2638         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2639                 blob = &qla_fw_blobs[FW_ISP24XX];
2640         }
2641
2642         down(&qla_fw_lock);
2643         if (blob->fw)
2644                 goto out;
2645
2646         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2647                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2648                     "(%s).\n", ha->host_no, blob->name));
2649                 blob->fw = NULL;
2650                 blob = NULL;
2651                 goto out;
2652         }
2653
2654 out:
2655         up(&qla_fw_lock);
2656         return blob;
2657 }
2658
2659 static void
2660 qla2x00_release_firmware(void)
2661 {
2662         int idx;
2663
2664         down(&qla_fw_lock);
2665         for (idx = 0; idx < FW_BLOBS; idx++)
2666                 if (qla_fw_blobs[idx].fw)
2667                         release_firmware(qla_fw_blobs[idx].fw);
2668         up(&qla_fw_lock);
2669 }
2670
2671 static struct qla_board_info qla_board_tbl = {
2672         .drv_name       = "qla2xxx",
2673 };
2674
2675 static struct pci_device_id qla2xxx_pci_tbl[] = {
2676         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2677                 PCI_ANY_ID, PCI_ANY_ID, },
2678         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2679                 PCI_ANY_ID, PCI_ANY_ID, },
2680         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2681                 PCI_ANY_ID, PCI_ANY_ID, },
2682         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2683                 PCI_ANY_ID, PCI_ANY_ID, },
2684         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2685                 PCI_ANY_ID, PCI_ANY_ID, },
2686         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2687                 PCI_ANY_ID, PCI_ANY_ID, },
2688         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2689                 PCI_ANY_ID, PCI_ANY_ID, },
2690         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2691                 PCI_ANY_ID, PCI_ANY_ID, },
2692         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2693                 PCI_ANY_ID, PCI_ANY_ID, },
2694         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422,
2695                 PCI_ANY_ID, PCI_ANY_ID, },
2696         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432,
2697                 PCI_ANY_ID, PCI_ANY_ID, },
2698         { 0 },
2699 };
2700 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2701
2702 static int __devinit
2703 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2704 {
2705         return qla2x00_probe_one(pdev, &qla_board_tbl);
2706 }
2707
2708 static void __devexit
2709 qla2xxx_remove_one(struct pci_dev *pdev)
2710 {
2711         qla2x00_remove_one(pdev);
2712 }
2713
2714 static struct pci_driver qla2xxx_pci_driver = {
2715         .name           = "qla2xxx",
2716         .driver         = {
2717                 .owner          = THIS_MODULE,
2718         },
2719         .id_table       = qla2xxx_pci_tbl,
2720         .probe          = qla2xxx_probe_one,
2721         .remove         = __devexit_p(qla2xxx_remove_one),
2722 };
2723
2724 static inline int
2725 qla2x00_pci_module_init(void)
2726 {
2727         return pci_module_init(&qla2xxx_pci_driver);
2728 }
2729
2730 static inline void
2731 qla2x00_pci_module_exit(void)
2732 {
2733         pci_unregister_driver(&qla2xxx_pci_driver);
2734 }
2735
2736 #endif
2737
2738 /**
2739  * qla2x00_module_init - Module initialization.
2740  **/
2741 static int __init
2742 qla2x00_module_init(void)
2743 {
2744         int ret = 0;
2745
2746         /* Allocate cache for SRBs. */
2747         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2748             SLAB_HWCACHE_ALIGN, NULL, NULL);
2749         if (srb_cachep == NULL) {
2750                 printk(KERN_ERR
2751                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2752                 return -ENOMEM;
2753         }
2754
2755         /* Derive version string. */
2756         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2757 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2758         strcat(qla2x00_version_str, "-fw");
2759 #endif
2760 #if DEBUG_QLA2100
2761         strcat(qla2x00_version_str, "-debug");
2762 #endif
2763         qla2xxx_transport_template =
2764             fc_attach_transport(&qla2xxx_transport_functions);
2765         if (!qla2xxx_transport_template)
2766                 return -ENODEV;
2767
2768         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2769         ret = qla2x00_pci_module_init();
2770         if (ret) {
2771                 kmem_cache_destroy(srb_cachep);
2772                 fc_release_transport(qla2xxx_transport_template);
2773         }
2774         return ret;
2775 }
2776
2777 /**
2778  * qla2x00_module_exit - Module cleanup.
2779  **/
2780 static void __exit
2781 qla2x00_module_exit(void)
2782 {
2783         qla2x00_pci_module_exit();
2784         qla2x00_release_firmware();
2785         kmem_cache_destroy(srb_cachep);
2786         fc_release_transport(qla2xxx_transport_template);
2787 }
2788
2789 module_init(qla2x00_module_init);
2790 module_exit(qla2x00_module_exit);
2791
2792 MODULE_AUTHOR("QLogic Corporation");
2793 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2794 MODULE_LICENSE("GPL");
2795 MODULE_VERSION(QLA2XXX_VERSION);