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