err.no Git - linux-2.6/blob - drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 static void qla2x00_free_device(scsi_qla_host_t *);
  58
  59 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  60
  61 int ql2xfdmienable;
  62 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  63 MODULE_PARM_DESC(ql2xfdmienable,
  64                 "Enables FDMI registratons "
  65                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  66
  67 /*
  68  * SCSI host template entry points
  69  */
  70 static int qla2xxx_slave_configure(struct scsi_device * device);
  71 static int qla2xxx_slave_alloc(struct scsi_device *);
  72 static void qla2xxx_slave_destroy(struct scsi_device *);
  73 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  74                 void (*fn)(struct scsi_cmnd *));
  75 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  76                 void (*fn)(struct scsi_cmnd *));
  77 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  78 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  79 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  80 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  81 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  82 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  83
  84 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  85 static int qla2x00_change_queue_type(struct scsi_device *, int);
  86
  87 static struct scsi_host_template qla2x00_driver_template = {
  88         .module                 = THIS_MODULE,
  89         .name                   = "qla2xxx",
  90         .queuecommand           = qla2x00_queuecommand,
  91
  92         .eh_abort_handler       = qla2xxx_eh_abort,
  93         .eh_device_reset_handler = qla2xxx_eh_device_reset,
  94         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
  95         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
  96
  97         .slave_configure        = qla2xxx_slave_configure,
  98
  99         .slave_alloc            = qla2xxx_slave_alloc,
 100         .slave_destroy          = qla2xxx_slave_destroy,
 101         .change_queue_depth     = qla2x00_change_queue_depth,
 102         .change_queue_type      = qla2x00_change_queue_type,
 103         .this_id                = -1,
 104         .cmd_per_lun            = 3,
 105         .use_clustering         = ENABLE_CLUSTERING,
 106         .sg_tablesize           = SG_ALL,
 107
 108         /*
 109          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 110          * which equates to 0x800000 sectors.
 111          */
 112         .max_sectors            = 0xFFFF,
 113         .shost_attrs            = qla2x00_host_attrs,
 114 };
 115
 116 static struct scsi_host_template qla24xx_driver_template = {
 117         .module                 = THIS_MODULE,
 118         .name                   = "qla2xxx",
 119         .queuecommand           = qla24xx_queuecommand,
 120
 121         .eh_abort_handler       = qla2xxx_eh_abort,
 122         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 123         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 124         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 125
 126         .slave_configure        = qla2xxx_slave_configure,
 127
 128         .slave_alloc            = qla2xxx_slave_alloc,
 129         .slave_destroy          = qla2xxx_slave_destroy,
 130         .change_queue_depth     = qla2x00_change_queue_depth,
 131         .change_queue_type      = qla2x00_change_queue_type,
 132         .this_id                = -1,
 133         .cmd_per_lun            = 3,
 134         .use_clustering         = ENABLE_CLUSTERING,
 135         .sg_tablesize           = SG_ALL,
 136
 137         .max_sectors            = 0xFFFF,
 138         .shost_attrs            = qla2x00_host_attrs,
 139 };
 140
 141 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 142
 143 /* TODO Convert to inlines
 144  *
 145  * Timer routines
 146  */
 147 #define WATCH_INTERVAL          1       /* number of seconds */
 148
 149 static void qla2x00_timer(scsi_qla_host_t *);
 150
 151 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 152     void *, unsigned long);
 153 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 154 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 155
 156 static inline void
 157 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 158 {
 159         init_timer(&ha->timer);
 160         ha->timer.expires = jiffies + interval * HZ;
 161         ha->timer.data = (unsigned long)ha;
 162         ha->timer.function = (void (*)(unsigned long))func;
 163         add_timer(&ha->timer);
 164         ha->timer_active = 1;
 165 }
 166
 167 static inline void
 168 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 169 {
 170         mod_timer(&ha->timer, jiffies + interval * HZ);
 171 }
 172
 173 static __inline__ void
 174 qla2x00_stop_timer(scsi_qla_host_t *ha)
 175 {
 176         del_timer_sync(&ha->timer);
 177         ha->timer_active = 0;
 178 }
 179
 180 static int qla2x00_do_dpc(void *data);
 181
 182 static void qla2x00_rst_aen(scsi_qla_host_t *);
 183
 184 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 185 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 186 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 187 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 188 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 189 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 190
 191 /* -------------------------------------------------------------------------- */
 192
 193 static char *
 194 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 195 {
 196         static char *pci_bus_modes[] = {
 197                 "33", "66", "100", "133",
 198         };
 199         uint16_t pci_bus;
 200
 201         strcpy(str, "PCI");
 202         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 203         if (pci_bus) {
 204                 strcat(str, "-X (");
 205                 strcat(str, pci_bus_modes[pci_bus]);
 206         } else {
 207                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 208                 strcat(str, " (");
 209                 strcat(str, pci_bus_modes[pci_bus]);
 210         }
 211         strcat(str, " MHz)");
 212
 213         return (str);
 214 }
 215
 216 static char *
 217 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 218 {
 219         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 220         uint32_t pci_bus;
 221         int pcie_reg;
 222
 223         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 224         if (pcie_reg) {
 225                 char lwstr[6];
 226                 uint16_t pcie_lstat, lspeed, lwidth;
 227
 228                 pcie_reg += 0x12;
 229                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 230                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 231                 lwidth = (pcie_lstat &
 232                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 233
 234                 strcpy(str, "PCIe (");
 235                 if (lspeed == 1)
 236                         strcat(str, "2.5Gb/s ");
 237                 else
 238                         strcat(str, "<unknown> ");
 239                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 240                 strcat(str, lwstr);
 241
 242                 return str;
 243         }
 244
 245         strcpy(str, "PCI");
 246         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 247         if (pci_bus == 0 || pci_bus == 8) {
 248                 strcat(str, " (");
 249                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 250         } else {
 251                 strcat(str, "-X ");
 252                 if (pci_bus & BIT_2)
 253                         strcat(str, "Mode 2");
 254                 else
 255                         strcat(str, "Mode 1");
 256                 strcat(str, " (");
 257                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 258         }
 259         strcat(str, " MHz)");
 260
 261         return str;
 262 }
 263
 264 char *
 265 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 266 {
 267         char un_str[10];
 268
 269         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 270             ha->fw_minor_version,
 271             ha->fw_subminor_version);
 272
 273         if (ha->fw_attributes & BIT_9) {
 274                 strcat(str, "FLX");
 275                 return (str);
 276         }
 277
 278         switch (ha->fw_attributes & 0xFF) {
 279         case 0x7:
 280                 strcat(str, "EF");
 281                 break;
 282         case 0x17:
 283                 strcat(str, "TP");
 284                 break;
 285         case 0x37:
 286                 strcat(str, "IP");
 287                 break;
 288         case 0x77:
 289                 strcat(str, "VI");
 290                 break;
 291         default:
 292                 sprintf(un_str, "(%x)", ha->fw_attributes);
 293                 strcat(str, un_str);
 294                 break;
 295         }
 296         if (ha->fw_attributes & 0x100)
 297                 strcat(str, "X");
 298
 299         return (str);
 300 }
 301
 302 char *
 303 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 304 {
 305         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 306             ha->fw_minor_version,
 307             ha->fw_subminor_version);
 308
 309         if (ha->fw_attributes & BIT_0)
 310                 strcat(str, "[Class 2] ");
 311         if (ha->fw_attributes & BIT_1)
 312                 strcat(str, "[IP] ");
 313         if (ha->fw_attributes & BIT_2)
 314                 strcat(str, "[Multi-ID] ");
 315         if (ha->fw_attributes & BIT_13)
 316                 strcat(str, "[Experimental]");
 317         return str;
 318 }
 319
 320 static inline srb_t *
 321 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 322     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 323 {
 324         srb_t *sp;
 325
 326         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 327         if (!sp)
 328                 return sp;
 329
 330         sp->ha = ha;
 331         sp->fcport = fcport;
 332         sp->cmd = cmd;
 333         sp->flags = 0;
 334         CMD_SP(cmd) = (void *)sp;
 335         cmd->scsi_done = done;
 336
 337         return sp;
 338 }
 339
 340 static int
 341 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 342 {
 343         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 344         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 345         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 346         srb_t *sp;
 347         int rval;
 348
 349         rval = fc_remote_port_chkready(rport);
 350         if (rval) {
 351                 cmd->result = rval;
 352                 goto qc_fail_command;
 353         }
 354
 355         /* Close window on fcport/rport state-transitioning. */
 356         if (!*(fc_port_t **)rport->dd_data) {
 357                 cmd->result = DID_IMM_RETRY << 16;
 358                 goto qc_fail_command;
 359         }
 360
 361         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 362                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 363                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 364                         cmd->result = DID_NO_CONNECT << 16;
 365                         goto qc_fail_command;
 366                 }
 367                 goto qc_host_busy;
 368         }
 369
 370         spin_unlock_irq(ha->host->host_lock);
 371
 372         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 373         if (!sp)
 374                 goto qc_host_busy_lock;
 375
 376         rval = qla2x00_start_scsi(sp);
 377         if (rval != QLA_SUCCESS)
 378                 goto qc_host_busy_free_sp;
 379
 380         spin_lock_irq(ha->host->host_lock);
 381
 382         return 0;
 383
 384 qc_host_busy_free_sp:
 385         qla2x00_sp_free_dma(ha, sp);
 386         mempool_free(sp, ha->srb_mempool);
 387
 388 qc_host_busy_lock:
 389         spin_lock_irq(ha->host->host_lock);
 390
 391 qc_host_busy:
 392         return SCSI_MLQUEUE_HOST_BUSY;
 393
 394 qc_fail_command:
 395         done(cmd);
 396
 397         return 0;
 398 }
 399
 400
 401 static int
 402 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 403 {
 404         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 405         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 406         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 407         srb_t *sp;
 408         int rval;
 409
 410         rval = fc_remote_port_chkready(rport);
 411         if (rval) {
 412                 cmd->result = rval;
 413                 goto qc24_fail_command;
 414         }
 415
 416         /* Close window on fcport/rport state-transitioning. */
 417         if (!*(fc_port_t **)rport->dd_data) {
 418                 cmd->result = DID_IMM_RETRY << 16;
 419                 goto qc24_fail_command;
 420         }
 421
 422         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 423                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 424                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 425                         cmd->result = DID_NO_CONNECT << 16;
 426                         goto qc24_fail_command;
 427                 }
 428                 goto qc24_host_busy;
 429         }
 430
 431         spin_unlock_irq(ha->host->host_lock);
 432
 433         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 434         if (!sp)
 435                 goto qc24_host_busy_lock;
 436
 437         rval = qla24xx_start_scsi(sp);
 438         if (rval != QLA_SUCCESS)
 439                 goto qc24_host_busy_free_sp;
 440
 441         spin_lock_irq(ha->host->host_lock);
 442
 443         return 0;
 444
 445 qc24_host_busy_free_sp:
 446         qla2x00_sp_free_dma(ha, sp);
 447         mempool_free(sp, ha->srb_mempool);
 448
 449 qc24_host_busy_lock:
 450         spin_lock_irq(ha->host->host_lock);
 451
 452 qc24_host_busy:
 453         return SCSI_MLQUEUE_HOST_BUSY;
 454
 455 qc24_fail_command:
 456         done(cmd);
 457
 458         return 0;
 459 }
 460
 461
 462 /*
 463  * qla2x00_eh_wait_on_command
 464  *    Waits for the command to be returned by the Firmware for some
 465  *    max time.
 466  *
 467  * Input:
 468  *    ha = actual ha whose done queue will contain the command
 469  *            returned by firmware.
 470  *    cmd = Scsi Command to wait on.
 471  *    flag = Abort/Reset(Bus or Device Reset)
 472  *
 473  * Return:
 474  *    Not Found : 0
 475  *    Found : 1
 476  */
 477 static int
 478 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 479 {
 480 #define ABORT_POLLING_PERIOD    1000
 481 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 482         unsigned long wait_iter = ABORT_WAIT_ITER;
 483         int ret = QLA_SUCCESS;
 484
 485         while (CMD_SP(cmd)) {
 486                 msleep(ABORT_POLLING_PERIOD);
 487
 488                 if (--wait_iter)
 489                         break;
 490         }
 491         if (CMD_SP(cmd))
 492                 ret = QLA_FUNCTION_FAILED;
 493
 494         return ret;
 495 }
 496
 497 /*
 498  * qla2x00_wait_for_hba_online
 499  *    Wait till the HBA is online after going through
 500  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 501  *    finally HBA is disabled ie marked offline
 502  *
 503  * Input:
 504  *     ha - pointer to host adapter structure
 505  *
 506  * Note:
 507  *    Does context switching-Release SPIN_LOCK
 508  *    (if any) before calling this routine.
 509  *
 510  * Return:
 511  *    Success (Adapter is online) : 0
 512  *    Failed  (Adapter is offline/disabled) : 1
 513  */
 514 int
 515 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 516 {
 517         int             return_status;
 518         unsigned long   wait_online;
 519
 520         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 521         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 522             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 523             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 524             ha->dpc_active) && time_before(jiffies, wait_online)) {
 525
 526                 msleep(1000);
 527         }
 528         if (ha->flags.online)
 529                 return_status = QLA_SUCCESS;
 530         else
 531                 return_status = QLA_FUNCTION_FAILED;
 532
 533         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 534
 535         return (return_status);
 536 }
 537
 538 /*
 539  * qla2x00_wait_for_loop_ready
 540  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 541  *    to be in LOOP_READY state.
 542  * Input:
 543  *     ha - pointer to host adapter structure
 544  *
 545  * Note:
 546  *    Does context switching-Release SPIN_LOCK
 547  *    (if any) before calling this routine.
 548  *
 549  *
 550  * Return:
 551  *    Success (LOOP_READY) : 0
 552  *    Failed  (LOOP_NOT_READY) : 1
 553  */
 554 static inline int
 555 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 556 {
 557         int      return_status = QLA_SUCCESS;
 558         unsigned long loop_timeout ;
 559
 560         /* wait for 5 min at the max for loop to be ready */
 561         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 562
 563         while ((!atomic_read(&ha->loop_down_timer) &&
 564             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 565             atomic_read(&ha->loop_state) != LOOP_READY) {
 566                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 567                         return_status = QLA_FUNCTION_FAILED;
 568                         break;
 569                 }
 570                 msleep(1000);
 571                 if (time_after_eq(jiffies, loop_timeout)) {
 572                         return_status = QLA_FUNCTION_FAILED;
 573                         break;
 574                 }
 575         }
 576         return (return_status);
 577 }
 578
 579 /**************************************************************************
 580 * qla2xxx_eh_abort
 581 *
 582 * Description:
 583 *    The abort function will abort the specified command.
 584 *
 585 * Input:
 586 *    cmd = Linux SCSI command packet to be aborted.
 587 *
 588 * Returns:
 589 *    Either SUCCESS or FAILED.
 590 *
 591 * Note:
 592 **************************************************************************/
 593 int
 594 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 595 {
 596         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 597         srb_t *sp;
 598         int ret, i;
 599         unsigned int id, lun;
 600         unsigned long serial;
 601         unsigned long flags;
 602
 603         if (!CMD_SP(cmd))
 604                 return FAILED;
 605
 606         ret = FAILED;
 607
 608         id = cmd->device->id;
 609         lun = cmd->device->lun;
 610         serial = cmd->serial_number;
 611
 612         /* Check active list for command command. */
 613         spin_lock_irqsave(&ha->hardware_lock, flags);
 614         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 615                 sp = ha->outstanding_cmds[i];
 616
 617                 if (sp == NULL)
 618                         continue;
 619
 620                 if (sp->cmd != cmd)
 621                         continue;
 622
 623                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 624                     __func__, ha->host_no, sp, serial));
 625                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 626
 627                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 628                 if (ha->isp_ops.abort_command(ha, sp)) {
 629                         DEBUG2(printk("%s(%ld): abort_command "
 630                             "mbx failed.\n", __func__, ha->host_no));
 631                 } else {
 632                         DEBUG3(printk("%s(%ld): abort_command "
 633                             "mbx success.\n", __func__, ha->host_no));
 634                         ret = SUCCESS;
 635                 }
 636                 spin_lock_irqsave(&ha->hardware_lock, flags);
 637
 638                 break;
 639         }
 640         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 641
 642         /* Wait for the command to be returned. */
 643         if (ret == SUCCESS) {
 644                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 645                         qla_printk(KERN_ERR, ha,
 646                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 647                             "%x.\n", ha->host_no, id, lun, serial, ret);
 648                 }
 649         }
 650
 651         qla_printk(KERN_INFO, ha,
 652             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 653             id, lun, serial, ret);
 654
 655         return ret;
 656 }
 657
 658 /**************************************************************************
 659 * qla2x00_eh_wait_for_pending_target_commands
 660 *
 661 * Description:
 662 *    Waits for all the commands to come back from the specified target.
 663 *
 664 * Input:
 665 *    ha - pointer to scsi_qla_host structure.
 666 *    t  - target
 667 * Returns:
 668 *    Either SUCCESS or FAILED.
 669 *
 670 * Note:
 671 **************************************************************************/
 672 static int
 673 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 674 {
 675         int     cnt;
 676         int     status;
 677         srb_t           *sp;
 678         struct scsi_cmnd *cmd;
 679         unsigned long flags;
 680
 681         status = 0;
 682
 683         /*
 684          * Waiting for all commands for the designated target in the active
 685          * array
 686          */
 687         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 688                 spin_lock_irqsave(&ha->hardware_lock, flags);
 689                 sp = ha->outstanding_cmds[cnt];
 690                 if (sp) {
 691                         cmd = sp->cmd;
 692                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 693                         if (cmd->device->id == t) {
 694                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 695                                         status = 1;
 696                                         break;
 697                                 }
 698                         }
 699                 } else {
 700                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 701                 }
 702         }
 703         return (status);
 704 }
 705
 706
 707 /**************************************************************************
 708 * qla2xxx_eh_device_reset
 709 *
 710 * Description:
 711 *    The device reset function will reset the target and abort any
 712 *    executing commands.
 713 *
 714 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 715 *          attempt to use this value, even if you determine it is
 716 *          non-null.
 717 *
 718 * Input:
 719 *    cmd = Linux SCSI command packet of the command that cause the
 720 *          bus device reset.
 721 *
 722 * Returns:
 723 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 724 *
 725 **************************************************************************/
 726 int
 727 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 728 {
 729         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 730         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 731         srb_t *sp;
 732         int ret;
 733         unsigned int id, lun;
 734         unsigned long serial;
 735
 736         ret = FAILED;
 737
 738         id = cmd->device->id;
 739         lun = cmd->device->lun;
 740         serial = cmd->serial_number;
 741
 742         sp = (srb_t *) CMD_SP(cmd);
 743         if (!sp || !fcport)
 744                 return ret;
 745
 746         qla_printk(KERN_INFO, ha,
 747             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 748
 749         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 750                 goto eh_dev_reset_done;
 751
 752         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 753                 if (qla2x00_device_reset(ha, fcport) == 0)
 754                         ret = SUCCESS;
 755
 756 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 757                 if (ret == SUCCESS) {
 758                         if (fcport->flags & FC_FABRIC_DEVICE) {
 759                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 760                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 761                         }
 762                 }
 763 #endif
 764         } else {
 765                 DEBUG2(printk(KERN_INFO
 766                     "%s failed: loop not ready\n",__func__);)
 767         }
 768
 769         if (ret == FAILED) {
 770                 DEBUG3(printk("%s(%ld): device reset failed\n",
 771                     __func__, ha->host_no));
 772                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 773                     __func__);
 774
 775                 goto eh_dev_reset_done;
 776         }
 777
 778         /* Flush outstanding commands. */
 779         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 780                 ret = FAILED;
 781         if (ret == FAILED) {
 782                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 783                     __func__, ha->host_no));
 784                 qla_printk(KERN_INFO, ha,
 785                     "%s: failed while waiting for commands\n", __func__);
 786         } else
 787                 qla_printk(KERN_INFO, ha,
 788                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 789                     id, lun);
 790  eh_dev_reset_done:
 791         return ret;
 792 }
 793
 794 /**************************************************************************
 795 * qla2x00_eh_wait_for_pending_commands
 796 *
 797 * Description:
 798 *    Waits for all the commands to come back from the specified host.
 799 *
 800 * Input:
 801 *    ha - pointer to scsi_qla_host structure.
 802 *
 803 * Returns:
 804 *    1 : SUCCESS
 805 *    0 : FAILED
 806 *
 807 * Note:
 808 **************************************************************************/
 809 static int
 810 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 811 {
 812         int     cnt;
 813         int     status;
 814         srb_t           *sp;
 815         struct scsi_cmnd *cmd;
 816         unsigned long flags;
 817
 818         status = 1;
 819
 820         /*
 821          * Waiting for all commands for the designated target in the active
 822          * array
 823          */
 824         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 825                 spin_lock_irqsave(&ha->hardware_lock, flags);
 826                 sp = ha->outstanding_cmds[cnt];
 827                 if (sp) {
 828                         cmd = sp->cmd;
 829                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 830                         status = qla2x00_eh_wait_on_command(ha, cmd);
 831                         if (status == 0)
 832                                 break;
 833                 }
 834                 else {
 835                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 836                 }
 837         }
 838         return (status);
 839 }
 840
 841
 842 /**************************************************************************
 843 * qla2xxx_eh_bus_reset
 844 *
 845 * Description:
 846 *    The bus reset function will reset the bus and abort any executing
 847 *    commands.
 848 *
 849 * Input:
 850 *    cmd = Linux SCSI command packet of the command that cause the
 851 *          bus reset.
 852 *
 853 * Returns:
 854 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 855 *
 856 **************************************************************************/
 857 int
 858 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 859 {
 860         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 861         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 862         srb_t *sp;
 863         int ret;
 864         unsigned int id, lun;
 865         unsigned long serial;
 866
 867         ret = FAILED;
 868
 869         id = cmd->device->id;
 870         lun = cmd->device->lun;
 871         serial = cmd->serial_number;
 872
 873         sp = (srb_t *) CMD_SP(cmd);
 874         if (!sp || !fcport)
 875                 return ret;
 876
 877         qla_printk(KERN_INFO, ha,
 878             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 879
 880         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 881                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 882                 goto eh_bus_reset_done;
 883         }
 884
 885         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 886                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 887                         ret = SUCCESS;
 888         }
 889         if (ret == FAILED)
 890                 goto eh_bus_reset_done;
 891
 892         /* Flush outstanding commands. */
 893         if (!qla2x00_eh_wait_for_pending_commands(ha))
 894                 ret = FAILED;
 895
 896 eh_bus_reset_done:
 897         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 898             (ret == FAILED) ? "failed" : "succeded");
 899
 900         return ret;
 901 }
 902
 903 /**************************************************************************
 904 * qla2xxx_eh_host_reset
 905 *
 906 * Description:
 907 *    The reset function will reset the Adapter.
 908 *
 909 * Input:
 910 *      cmd = Linux SCSI command packet of the command that cause the
 911 *            adapter reset.
 912 *
 913 * Returns:
 914 *      Either SUCCESS or FAILED.
 915 *
 916 * Note:
 917 **************************************************************************/
 918 int
 919 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 920 {
 921         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 922         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 923         srb_t *sp;
 924         int ret;
 925         unsigned int id, lun;
 926         unsigned long serial;
 927
 928         ret = FAILED;
 929
 930         id = cmd->device->id;
 931         lun = cmd->device->lun;
 932         serial = cmd->serial_number;
 933
 934         sp = (srb_t *) CMD_SP(cmd);
 935         if (!sp || !fcport)
 936                 return ret;
 937
 938         qla_printk(KERN_INFO, ha,
 939             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 940
 941         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 942                 goto eh_host_reset_lock;
 943
 944         /*
 945          * Fixme-may be dpc thread is active and processing
 946          * loop_resync,so wait a while for it to
 947          * be completed and then issue big hammer.Otherwise
 948          * it may cause I/O failure as big hammer marks the
 949          * devices as lost kicking of the port_down_timer
 950          * while dpc is stuck for the mailbox to complete.
 951          */
 952         qla2x00_wait_for_loop_ready(ha);
 953         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 954         if (qla2x00_abort_isp(ha)) {
 955                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 956                 /* failed. schedule dpc to try */
 957                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 958
 959                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 960                         goto eh_host_reset_lock;
 961         }
 962         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 963
 964         /* Waiting for our command in done_queue to be returned to OS.*/
 965         if (qla2x00_eh_wait_for_pending_commands(ha))
 966                 ret = SUCCESS;
 967
 968 eh_host_reset_lock:
 969         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 970             (ret == FAILED) ? "failed" : "succeded");
 971
 972         return ret;
 973 }
 974
 975 /*
 976 * qla2x00_loop_reset
 977 *      Issue loop reset.
 978 *
 979 * Input:
 980 *      ha = adapter block pointer.
 981 *
 982 * Returns:
 983 *      0 = success
 984 */
 985 static int
 986 qla2x00_loop_reset(scsi_qla_host_t *ha)
 987 {
 988         int status = QLA_SUCCESS;
 989         struct fc_port *fcport;
 990
 991         if (ha->flags.enable_lip_reset) {
 992                 status = qla2x00_lip_reset(ha);
 993         }
 994
 995         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
 996                 list_for_each_entry(fcport, &ha->fcports, list) {
 997                         if (fcport->port_type != FCT_TARGET)
 998                                 continue;
 999
1000                         status = qla2x00_device_reset(ha, fcport);
1001                         if (status != QLA_SUCCESS)
1002                                 break;
1003                 }
1004         }
1005
1006         if (status == QLA_SUCCESS &&
1007                 ((!ha->flags.enable_target_reset &&
1008                   !ha->flags.enable_lip_reset) ||
1009                 ha->flags.enable_lip_full_login)) {
1010
1011                 status = qla2x00_full_login_lip(ha);
1012         }
1013
1014         /* Issue marker command only when we are going to start the I/O */
1015         ha->marker_needed = 1;
1016
1017         if (status) {
1018                 /* Empty */
1019                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1020                                 __func__,
1021                                 ha->host_no);)
1022         } else {
1023                 /* Empty */
1024                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1025                                 __func__,
1026                                 ha->host_no);)
1027         }
1028
1029         return(status);
1030 }
1031
1032 /*
1033  * qla2x00_device_reset
1034  *      Issue bus device reset message to the target.
1035  *
1036  * Input:
1037  *      ha = adapter block pointer.
1038  *      t = SCSI ID.
1039  *      TARGET_QUEUE_LOCK must be released.
1040  *      ADAPTER_STATE_LOCK must be released.
1041  *
1042  * Context:
1043  *      Kernel context.
1044  */
1045 static int
1046 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1047 {
1048         /* Abort Target command will clear Reservation */
1049         return ha->isp_ops.abort_target(reset_fcport);
1050 }
1051
1052 static int
1053 qla2xxx_slave_alloc(struct scsi_device *sdev)
1054 {
1055         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1056
1057         if (!rport || fc_remote_port_chkready(rport))
1058                 return -ENXIO;
1059
1060         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1061
1062         return 0;
1063 }
1064
1065 static int
1066 qla2xxx_slave_configure(struct scsi_device *sdev)
1067 {
1068         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1069         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1070
1071         if (sdev->tagged_supported)
1072                 scsi_activate_tcq(sdev, 32);
1073         else
1074                 scsi_deactivate_tcq(sdev, 32);
1075
1076         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1077
1078         return 0;
1079 }
1080
1081 static void
1082 qla2xxx_slave_destroy(struct scsi_device *sdev)
1083 {
1084         sdev->hostdata = NULL;
1085 }
1086
1087 static int
1088 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1089 {
1090         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1091         return sdev->queue_depth;
1092 }
1093
1094 static int
1095 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1096 {
1097         if (sdev->tagged_supported) {
1098                 scsi_set_tag_type(sdev, tag_type);
1099                 if (tag_type)
1100                         scsi_activate_tcq(sdev, sdev->queue_depth);
1101                 else
1102                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1103         } else
1104                 tag_type = 0;
1105
1106         return tag_type;
1107 }
1108
1109 /**
1110  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1111  * @ha: HA context
1112  *
1113  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1114  * supported addressing method.
1115  */
1116 static void
1117 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1118 {
1119         /* Assume a 32bit DMA mask. */
1120         ha->flags.enable_64bit_addressing = 0;
1121
1122         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1123                 /* Any upper-dword bits set? */
1124                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1125                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1126                         /* Ok, a 64bit DMA mask is applicable. */
1127                         ha->flags.enable_64bit_addressing = 1;
1128                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1129                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1130                         return;
1131                 }
1132         }
1133
1134         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1135         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1136 }
1137
1138 static inline void
1139 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1140 {
1141         ha->device_type = DT_EXTENDED_IDS;
1142         switch (ha->pdev->device) {
1143         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1144                 ha->device_type |= DT_ISP2100;
1145                 ha->device_type &= ~DT_EXTENDED_IDS;
1146                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1147                 break;
1148         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1149                 ha->device_type |= DT_ISP2200;
1150                 ha->device_type &= ~DT_EXTENDED_IDS;
1151                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1152                 break;
1153         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1154                 ha->device_type |= DT_ISP2300;
1155                 ha->device_type |= DT_ZIO_SUPPORTED;
1156                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1157                 break;
1158         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1159                 ha->device_type |= DT_ISP2312;
1160                 ha->device_type |= DT_ZIO_SUPPORTED;
1161                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1162                 break;
1163         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1164                 ha->device_type |= DT_ISP2322;
1165                 ha->device_type |= DT_ZIO_SUPPORTED;
1166                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1167                     ha->pdev->subsystem_device == 0x0170)
1168                         ha->device_type |= DT_OEM_001;
1169                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1170                 break;
1171         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1172                 ha->device_type |= DT_ISP6312;
1173                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1174                 break;
1175         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1176                 ha->device_type |= DT_ISP6322;
1177                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1178                 break;
1179         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1180                 ha->device_type |= DT_ISP2422;
1181                 ha->device_type |= DT_ZIO_SUPPORTED;
1182                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1183                 break;
1184         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1185                 ha->device_type |= DT_ISP2432;
1186                 ha->device_type |= DT_ZIO_SUPPORTED;
1187                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1188                 break;
1189         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1190                 ha->device_type |= DT_ISP5422;
1191                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1192                 break;
1193         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1194                 ha->device_type |= DT_ISP5432;
1195                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
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, "qla2xxx")) {
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 static int qla2x00_probe_one(struct pci_dev *pdev)
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         sprintf(ha->host_str, "qla2xxx_%ld", ha->host_no);
1359
1360         /* Set ISP-type information. */
1361         qla2x00_set_isp_flags(ha);
1362
1363         /* Configure PCI I/O space */
1364         ret = qla2x00_iospace_config(ha);
1365         if (ret)
1366                 goto probe_failed;
1367
1368         qla_printk(KERN_INFO, ha,
1369             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1370             ha->iobase);
1371
1372         spin_lock_init(&ha->hardware_lock);
1373
1374         ha->prev_topology = 0;
1375         ha->init_cb_size = sizeof(init_cb_t);
1376         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1377         ha->link_data_rate = LDR_UNKNOWN;
1378         ha->optrom_size = OPTROM_SIZE_2300;
1379
1380         /* Assign ISP specific operations. */
1381         ha->isp_ops.pci_config          = qla2100_pci_config;
1382         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1383         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1384         ha->isp_ops.config_rings        = qla2x00_config_rings;
1385         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1386         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1387         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1388         ha->isp_ops.load_risc           = qla2x00_load_risc;
1389         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1390         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1391         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1392         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1393         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1394         ha->isp_ops.abort_command       = qla2x00_abort_command;
1395         ha->isp_ops.abort_target        = qla2x00_abort_target;
1396         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1397         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1398         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1399         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1400         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1401         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1402         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1403         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1404         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1405         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1406         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1407         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1408         if (IS_QLA2100(ha)) {
1409                 host->max_id = MAX_TARGETS_2100;
1410                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1411                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1412                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1413                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1414                 host->sg_tablesize = 32;
1415                 ha->gid_list_info_size = 4;
1416         } else if (IS_QLA2200(ha)) {
1417                 host->max_id = MAX_TARGETS_2200;
1418                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1419                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1420                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1421                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1422                 ha->gid_list_info_size = 4;
1423         } else if (IS_QLA23XX(ha)) {
1424                 host->max_id = MAX_TARGETS_2200;
1425                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1426                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1427                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1428                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1429                 ha->isp_ops.pci_config = qla2300_pci_config;
1430                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1431                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1432                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1433                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1434                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1435                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1436                 ha->gid_list_info_size = 6;
1437                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1438                         ha->optrom_size = OPTROM_SIZE_2322;
1439         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1440                 host->max_id = MAX_TARGETS_2200;
1441                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1442                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1443                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1444                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1445                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1446                 ha->mgmt_svr_loop_id = 10;
1447                 ha->isp_ops.pci_config = qla24xx_pci_config;
1448                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1449                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1450                 ha->isp_ops.config_rings = qla24xx_config_rings;
1451                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1452                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1453                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1454                 ha->isp_ops.load_risc = qla24xx_load_risc;
1455                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1456                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1457                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1458                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1459                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1460                 ha->isp_ops.abort_command = qla24xx_abort_command;
1461                 ha->isp_ops.abort_target = qla24xx_abort_target;
1462                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1463                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1464                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1465                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1466                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1467                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1468                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1469                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1470                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1471                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1472                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1473                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1474                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1475                 ha->gid_list_info_size = 8;
1476                 ha->optrom_size = OPTROM_SIZE_24XX;
1477         }
1478         host->can_queue = ha->request_q_length + 128;
1479
1480         /* load the F/W, read paramaters, and init the H/W */
1481         ha->instance = num_hosts;
1482
1483         init_MUTEX(&ha->mbx_cmd_sem);
1484         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1485
1486         INIT_LIST_HEAD(&ha->list);
1487         INIT_LIST_HEAD(&ha->fcports);
1488
1489         /*
1490          * These locks are used to prevent more than one CPU
1491          * from modifying the queue at the same time. The
1492          * higher level "host_lock" will reduce most
1493          * contention for these locks.
1494          */
1495         spin_lock_init(&ha->mbx_reg_lock);
1496
1497         qla2x00_config_dma_addressing(ha);
1498         if (qla2x00_mem_alloc(ha)) {
1499                 qla_printk(KERN_WARNING, ha,
1500                     "[ERROR] Failed to allocate memory for adapter\n");
1501
1502                 ret = -ENOMEM;
1503                 goto probe_failed;
1504         }
1505
1506         if (qla2x00_initialize_adapter(ha) &&
1507             !(ha->device_flags & DFLG_NO_CABLE)) {
1508
1509                 qla_printk(KERN_WARNING, ha,
1510                     "Failed to initialize adapter\n");
1511
1512                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1513                     "Adapter flags %x.\n",
1514                     ha->host_no, ha->device_flags));
1515
1516                 ret = -ENODEV;
1517                 goto probe_failed;
1518         }
1519
1520         /*
1521          * Startup the kernel thread for this host adapter
1522          */
1523         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1524                         "%s_dpc", ha->host_str);
1525         if (IS_ERR(ha->dpc_thread)) {
1526                 qla_printk(KERN_WARNING, ha,
1527                     "Unable to start DPC thread!\n");
1528                 ret = PTR_ERR(ha->dpc_thread);
1529                 goto probe_failed;
1530         }
1531
1532         host->this_id = 255;
1533         host->cmd_per_lun = 3;
1534         host->unique_id = ha->instance;
1535         host->max_cmd_len = MAX_CMDSZ;
1536         host->max_channel = MAX_BUSES - 1;
1537         host->max_lun = MAX_LUNS;
1538         host->transportt = qla2xxx_transport_template;
1539
1540         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1541             SA_INTERRUPT|SA_SHIRQ, "qla2xxx", ha);
1542         if (ret) {
1543                 qla_printk(KERN_WARNING, ha,
1544                     "Failed to reserve interrupt %d already in use.\n",
1545                     pdev->irq);
1546                 goto probe_failed;
1547         }
1548         host->irq = pdev->irq;
1549
1550         /* Initialized the timer */
1551         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1552
1553         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1554             ha->host_no, ha));
1555
1556         ha->isp_ops.disable_intrs(ha);
1557
1558         spin_lock_irqsave(&ha->hardware_lock, flags);
1559         reg = ha->iobase;
1560         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1561                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1562                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1563         } else {
1564                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1565                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1566                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1567
1568                 /* Enable proper parity */
1569                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1570                         if (IS_QLA2300(ha))
1571                                 /* SRAM parity */
1572                                 WRT_REG_WORD(&reg->isp.hccr,
1573                                     (HCCR_ENABLE_PARITY + 0x1));
1574                         else
1575                                 /* SRAM, Instruction RAM and GP RAM parity */
1576                                 WRT_REG_WORD(&reg->isp.hccr,
1577                                     (HCCR_ENABLE_PARITY + 0x7));
1578                 }
1579         }
1580         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1581
1582         ha->isp_ops.enable_intrs(ha);
1583
1584         /* v2.19.5b6 */
1585         /*
1586          * Wait around max loop_reset_delay secs for the devices to come
1587          * on-line. We don't want Linux scanning before we are ready.
1588          *
1589          */
1590         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1591             time_before(jiffies,wait_switch) &&
1592              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1593              && (ha->device_flags & SWITCH_FOUND) ;) {
1594
1595                 qla2x00_check_fabric_devices(ha);
1596
1597                 msleep(10);
1598         }
1599
1600         pci_set_drvdata(pdev, ha);
1601         ha->flags.init_done = 1;
1602         num_hosts++;
1603
1604         ret = scsi_add_host(host, &pdev->dev);
1605         if (ret)
1606                 goto probe_failed;
1607
1608         qla2x00_alloc_sysfs_attr(ha);
1609
1610         qla2x00_init_host_attr(ha);
1611
1612         qla_printk(KERN_INFO, ha, "\n"
1613             " QLogic Fibre Channel HBA Driver: %s\n"
1614             "  QLogic %s - %s\n"
1615             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1616             qla2x00_version_str, ha->model_number,
1617             ha->model_desc ? ha->model_desc: "", pdev->device,
1618             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1619             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1620             ha->isp_ops.fw_version_str(ha, fw_str));
1621
1622         /* Go with fc_rport registration. */
1623         list_for_each_entry(fcport, &ha->fcports, list)
1624                 qla2x00_reg_remote_port(ha, fcport);
1625
1626         return 0;
1627
1628 probe_failed:
1629         qla2x00_free_device(ha);
1630
1631         scsi_host_put(host);
1632
1633 probe_disable_device:
1634         pci_disable_device(pdev);
1635
1636 probe_out:
1637         return ret;
1638 }
1639
1640 static void qla2x00_remove_one(struct pci_dev *pdev)
1641 {
1642         scsi_qla_host_t *ha;
1643
1644         ha = pci_get_drvdata(pdev);
1645
1646         qla2x00_free_sysfs_attr(ha);
1647
1648         fc_remove_host(ha->host);
1649
1650         scsi_remove_host(ha->host);
1651
1652         qla2x00_free_device(ha);
1653
1654         scsi_host_put(ha->host);
1655
1656         pci_set_drvdata(pdev, NULL);
1657 }
1658
1659 static void
1660 qla2x00_free_device(scsi_qla_host_t *ha)
1661 {
1662         /* Disable timer */
1663         if (ha->timer_active)
1664                 qla2x00_stop_timer(ha);
1665
1666         /* Kill the kernel thread for this host */
1667         if (ha->dpc_thread) {
1668                 struct task_struct *t = ha->dpc_thread;
1669
1670                 /*
1671                  * qla2xxx_wake_dpc checks for ->dpc_thread
1672                  * so we need to zero it out.
1673                  */
1674                 ha->dpc_thread = NULL;
1675                 kthread_stop(t);
1676         }
1677
1678         /* Stop currently executing firmware. */
1679         qla2x00_stop_firmware(ha);
1680
1681         /* turn-off interrupts on the card */
1682         if (ha->interrupts_on)
1683                 ha->isp_ops.disable_intrs(ha);
1684
1685         qla2x00_mem_free(ha);
1686
1687         ha->flags.online = 0;
1688
1689         /* Detach interrupts */
1690         if (ha->pdev->irq)
1691                 free_irq(ha->pdev->irq, ha);
1692
1693         /* release io space registers  */
1694         if (ha->iobase)
1695                 iounmap(ha->iobase);
1696         pci_release_regions(ha->pdev);
1697
1698         pci_disable_device(ha->pdev);
1699 }
1700
1701 static inline void
1702 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1703     int defer)
1704 {
1705         unsigned long flags;
1706         struct fc_rport *rport;
1707
1708         if (!fcport->rport)
1709                 return;
1710
1711         rport = fcport->rport;
1712         if (defer) {
1713                 spin_lock_irqsave(&fcport->rport_lock, flags);
1714                 fcport->drport = rport;
1715                 fcport->rport = NULL;
1716                 *(fc_port_t **)rport->dd_data = NULL;
1717                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1718                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1719         } else {
1720                 spin_lock_irqsave(&fcport->rport_lock, flags);
1721                 fcport->rport = NULL;
1722                 *(fc_port_t **)rport->dd_data = NULL;
1723                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1724                 fc_remote_port_delete(rport);
1725         }
1726 }
1727
1728 /*
1729  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1730  *
1731  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1732  *
1733  * Return: None.
1734  *
1735  * Context:
1736  */
1737 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1738     int do_login, int defer)
1739 {
1740         if (atomic_read(&fcport->state) == FCS_ONLINE)
1741                 qla2x00_schedule_rport_del(ha, fcport, defer);
1742
1743         /*
1744          * We may need to retry the login, so don't change the state of the
1745          * port but do the retries.
1746          */
1747         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1748                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1749
1750         if (!do_login)
1751                 return;
1752
1753         if (fcport->login_retry == 0) {
1754                 fcport->login_retry = ha->login_retry_count;
1755                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1756
1757                 DEBUG(printk("scsi(%ld): Port login retry: "
1758                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1759                     "id = 0x%04x retry cnt=%d\n",
1760                     ha->host_no,
1761                     fcport->port_name[0],
1762                     fcport->port_name[1],
1763                     fcport->port_name[2],
1764                     fcport->port_name[3],
1765                     fcport->port_name[4],
1766                     fcport->port_name[5],
1767                     fcport->port_name[6],
1768                     fcport->port_name[7],
1769                     fcport->loop_id,
1770                     fcport->login_retry));
1771         }
1772 }
1773
1774 /*
1775  * qla2x00_mark_all_devices_lost
1776  *      Updates fcport state when device goes offline.
1777  *
1778  * Input:
1779  *      ha = adapter block pointer.
1780  *      fcport = port structure pointer.
1781  *
1782  * Return:
1783  *      None.
1784  *
1785  * Context:
1786  */
1787 void
1788 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1789 {
1790         fc_port_t *fcport;
1791
1792         list_for_each_entry(fcport, &ha->fcports, list) {
1793                 if (fcport->port_type != FCT_TARGET)
1794                         continue;
1795
1796                 /*
1797                  * No point in marking the device as lost, if the device is
1798                  * already DEAD.
1799                  */
1800                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1801                         continue;
1802                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1803                         qla2x00_schedule_rport_del(ha, fcport, defer);
1804                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1805         }
1806
1807         if (defer)
1808                 qla2xxx_wake_dpc(ha);
1809 }
1810
1811 /*
1812 * qla2x00_mem_alloc
1813 *      Allocates adapter memory.
1814 *
1815 * Returns:
1816 *      0  = success.
1817 *      1  = failure.
1818 */
1819 static uint8_t
1820 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1821 {
1822         char    name[16];
1823         uint8_t   status = 1;
1824         int     retry= 10;
1825
1826         do {
1827                 /*
1828                  * This will loop only once if everything goes well, else some
1829                  * number of retries will be performed to get around a kernel
1830                  * bug where available mem is not allocated until after a
1831                  * little delay and a retry.
1832                  */
1833                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1834                     (ha->request_q_length + 1) * sizeof(request_t),
1835                     &ha->request_dma, GFP_KERNEL);
1836                 if (ha->request_ring == NULL) {
1837                         qla_printk(KERN_WARNING, ha,
1838                             "Memory Allocation failed - request_ring\n");
1839
1840                         qla2x00_mem_free(ha);
1841                         msleep(100);
1842
1843                         continue;
1844                 }
1845
1846                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1847                     (ha->response_q_length + 1) * sizeof(response_t),
1848                     &ha->response_dma, GFP_KERNEL);
1849                 if (ha->response_ring == NULL) {
1850                         qla_printk(KERN_WARNING, ha,
1851                             "Memory Allocation failed - response_ring\n");
1852
1853                         qla2x00_mem_free(ha);
1854                         msleep(100);
1855
1856                         continue;
1857                 }
1858
1859                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1860                     &ha->gid_list_dma, GFP_KERNEL);
1861                 if (ha->gid_list == NULL) {
1862                         qla_printk(KERN_WARNING, ha,
1863                             "Memory Allocation failed - gid_list\n");
1864
1865                         qla2x00_mem_free(ha);
1866                         msleep(100);
1867
1868                         continue;
1869                 }
1870
1871                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1872                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1873                     DMA_POOL_SIZE, 8, 0);
1874                 if (ha->s_dma_pool == NULL) {
1875                         qla_printk(KERN_WARNING, ha,
1876                             "Memory Allocation failed - s_dma_pool\n");
1877
1878                         qla2x00_mem_free(ha);
1879                         msleep(100);
1880
1881                         continue;
1882                 }
1883
1884                 /* get consistent memory allocated for init control block */
1885                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1886                     &ha->init_cb_dma);
1887                 if (ha->init_cb == NULL) {
1888                         qla_printk(KERN_WARNING, ha,
1889                             "Memory Allocation failed - init_cb\n");
1890
1891                         qla2x00_mem_free(ha);
1892                         msleep(100);
1893
1894                         continue;
1895                 }
1896                 memset(ha->init_cb, 0, ha->init_cb_size);
1897
1898                 /* Allocate ioctl related memory. */
1899                 if (qla2x00_alloc_ioctl_mem(ha)) {
1900                         qla_printk(KERN_WARNING, ha,
1901                             "Memory Allocation failed - ioctl_mem\n");
1902
1903                         qla2x00_mem_free(ha);
1904                         msleep(100);
1905
1906                         continue;
1907                 }
1908
1909                 if (qla2x00_allocate_sp_pool(ha)) {
1910                         qla_printk(KERN_WARNING, ha,
1911                             "Memory Allocation failed - "
1912                             "qla2x00_allocate_sp_pool()\n");
1913
1914                         qla2x00_mem_free(ha);
1915                         msleep(100);
1916
1917                         continue;
1918                 }
1919
1920                 /* Allocate memory for SNS commands */
1921                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1922                         /* Get consistent memory allocated for SNS commands */
1923                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1924                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1925                             GFP_KERNEL);
1926                         if (ha->sns_cmd == NULL) {
1927                                 /* error */
1928                                 qla_printk(KERN_WARNING, ha,
1929                                     "Memory Allocation failed - sns_cmd\n");
1930
1931                                 qla2x00_mem_free(ha);
1932                                 msleep(100);
1933
1934                                 continue;
1935                         }
1936                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1937                 } else {
1938                         /* Get consistent memory allocated for MS IOCB */
1939                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1940                             &ha->ms_iocb_dma);
1941                         if (ha->ms_iocb == NULL) {
1942                                 /* error */
1943                                 qla_printk(KERN_WARNING, ha,
1944                                     "Memory Allocation failed - ms_iocb\n");
1945
1946                                 qla2x00_mem_free(ha);
1947                                 msleep(100);
1948
1949                                 continue;
1950                         }
1951                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1952
1953                         /*
1954                          * Get consistent memory allocated for CT SNS
1955                          * commands
1956                          */
1957                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1958                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1959                             GFP_KERNEL);
1960                         if (ha->ct_sns == NULL) {
1961                                 /* error */
1962                                 qla_printk(KERN_WARNING, ha,
1963                                     "Memory Allocation failed - ct_sns\n");
1964
1965                                 qla2x00_mem_free(ha);
1966                                 msleep(100);
1967
1968                                 continue;
1969                         }
1970                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1971                 }
1972
1973                 /* Done all allocations without any error. */
1974                 status = 0;
1975
1976         } while (retry-- && status != 0);
1977
1978         if (status) {
1979                 printk(KERN_WARNING
1980                         "%s(): **** FAILED ****\n", __func__);
1981         }
1982
1983         return(status);
1984 }
1985
1986 /*
1987 * qla2x00_mem_free
1988 *      Frees all adapter allocated memory.
1989 *
1990 * Input:
1991 *      ha = adapter block pointer.
1992 */
1993 static void
1994 qla2x00_mem_free(scsi_qla_host_t *ha)
1995 {
1996         struct list_head        *fcpl, *fcptemp;
1997         fc_port_t       *fcport;
1998
1999         if (ha == NULL) {
2000                 /* error */
2001                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2002                 return;
2003         }
2004
2005         /* free ioctl memory */
2006         qla2x00_free_ioctl_mem(ha);
2007
2008         /* free sp pool */
2009         qla2x00_free_sp_pool(ha);
2010
2011         if (ha->sns_cmd)
2012                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2013                     ha->sns_cmd, ha->sns_cmd_dma);
2014
2015         if (ha->ct_sns)
2016                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2017                     ha->ct_sns, ha->ct_sns_dma);
2018
2019         if (ha->ms_iocb)
2020                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2021
2022         if (ha->init_cb)
2023                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2024
2025         if (ha->s_dma_pool)
2026                 dma_pool_destroy(ha->s_dma_pool);
2027
2028         if (ha->gid_list)
2029                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2030                     ha->gid_list_dma);
2031
2032         if (ha->response_ring)
2033                 dma_free_coherent(&ha->pdev->dev,
2034                     (ha->response_q_length + 1) * sizeof(response_t),
2035                     ha->response_ring, ha->response_dma);
2036
2037         if (ha->request_ring)
2038                 dma_free_coherent(&ha->pdev->dev,
2039                     (ha->request_q_length + 1) * sizeof(request_t),
2040                     ha->request_ring, ha->request_dma);
2041
2042         ha->sns_cmd = NULL;
2043         ha->sns_cmd_dma = 0;
2044         ha->ct_sns = NULL;
2045         ha->ct_sns_dma = 0;
2046         ha->ms_iocb = NULL;
2047         ha->ms_iocb_dma = 0;
2048         ha->init_cb = NULL;
2049         ha->init_cb_dma = 0;
2050
2051         ha->s_dma_pool = NULL;
2052
2053         ha->gid_list = NULL;
2054         ha->gid_list_dma = 0;
2055
2056         ha->response_ring = NULL;
2057         ha->response_dma = 0;
2058         ha->request_ring = NULL;
2059         ha->request_dma = 0;
2060
2061         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2062                 fcport = list_entry(fcpl, fc_port_t, list);
2063
2064                 /* fc ports */
2065                 list_del_init(&fcport->list);
2066                 kfree(fcport);
2067         }
2068         INIT_LIST_HEAD(&ha->fcports);
2069
2070         if (ha->fw_dump)
2071                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2072
2073         vfree(ha->fw_dump24);
2074
2075         vfree(ha->fw_dump_buffer);
2076
2077         ha->fw_dump = NULL;
2078         ha->fw_dump24 = NULL;
2079         ha->fw_dumped = 0;
2080         ha->fw_dump_reading = 0;
2081         ha->fw_dump_buffer = NULL;
2082
2083         vfree(ha->optrom_buffer);
2084 }
2085
2086 /*
2087  * qla2x00_allocate_sp_pool
2088  *       This routine is called during initialization to allocate
2089  *       memory for local srb_t.
2090  *
2091  * Input:
2092  *       ha   = adapter block pointer.
2093  *
2094  * Context:
2095  *      Kernel context.
2096  */
2097 static int
2098 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2099 {
2100         int      rval;
2101
2102         rval = QLA_SUCCESS;
2103         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2104         if (ha->srb_mempool == NULL) {
2105                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2106                 rval = QLA_FUNCTION_FAILED;
2107         }
2108         return (rval);
2109 }
2110
2111 /*
2112  *  This routine frees all adapter allocated memory.
2113  *
2114  */
2115 static void
2116 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2117 {
2118         if (ha->srb_mempool) {
2119                 mempool_destroy(ha->srb_mempool);
2120                 ha->srb_mempool = NULL;
2121         }
2122 }
2123
2124 /**************************************************************************
2125 * qla2x00_do_dpc
2126 *   This kernel thread is a task that is schedule by the interrupt handler
2127 *   to perform the background processing for interrupts.
2128 *
2129 * Notes:
2130 * This task always run in the context of a kernel thread.  It
2131 * is kick-off by the driver's detect code and starts up
2132 * up one per adapter. It immediately goes to sleep and waits for
2133 * some fibre event.  When either the interrupt handler or
2134 * the timer routine detects a event it will one of the task
2135 * bits then wake us up.
2136 **************************************************************************/
2137 static int
2138 qla2x00_do_dpc(void *data)
2139 {
2140         scsi_qla_host_t *ha;
2141         fc_port_t       *fcport;
2142         uint8_t         status;
2143         uint16_t        next_loopid;
2144
2145         ha = (scsi_qla_host_t *)data;
2146
2147         set_user_nice(current, -20);
2148
2149         while (!kthread_should_stop()) {
2150                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2151
2152                 set_current_state(TASK_INTERRUPTIBLE);
2153                 schedule();
2154                 __set_current_state(TASK_RUNNING);
2155
2156                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2157
2158                 /* Initialization not yet finished. Don't do anything yet. */
2159                 if (!ha->flags.init_done)
2160                         continue;
2161
2162                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2163
2164                 ha->dpc_active = 1;
2165
2166                 if (ha->flags.mbox_busy) {
2167                         ha->dpc_active = 0;
2168                         continue;
2169                 }
2170
2171                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2172
2173                         DEBUG(printk("scsi(%ld): dpc: sched "
2174                             "qla2x00_abort_isp ha = %p\n",
2175                             ha->host_no, ha));
2176                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2177                             &ha->dpc_flags))) {
2178
2179                                 if (qla2x00_abort_isp(ha)) {
2180                                         /* failed. retry later */
2181                                         set_bit(ISP_ABORT_NEEDED,
2182                                             &ha->dpc_flags);
2183                                 }
2184                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2185                         }
2186                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2187                             ha->host_no));
2188                 }
2189
2190                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2191                         qla2x00_update_fcports(ha);
2192
2193                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2194                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2195                             ha->host_no));
2196                         qla2x00_loop_reset(ha);
2197                 }
2198
2199                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2200                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2201
2202                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2203                             ha->host_no));
2204
2205                         qla2x00_rst_aen(ha);
2206                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2207                 }
2208
2209                 /* Retry each device up to login retry count */
2210                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2211                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2212                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2213
2214                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2215                             ha->host_no));
2216
2217                         next_loopid = 0;
2218                         list_for_each_entry(fcport, &ha->fcports, list) {
2219                                 if (fcport->port_type != FCT_TARGET)
2220                                         continue;
2221
2222                                 /*
2223                                  * If the port is not ONLINE then try to login
2224                                  * to it if we haven't run out of retries.
2225                                  */
2226                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2227                                     fcport->login_retry) {
2228
2229                                         fcport->login_retry--;
2230                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2231                                                 if (fcport->flags &
2232                                                     FCF_TAPE_PRESENT)
2233                                                         ha->isp_ops.fabric_logout(
2234                                                             ha, fcport->loop_id,
2235                                                             fcport->d_id.b.domain,
2236                                                             fcport->d_id.b.area,
2237                                                             fcport->d_id.b.al_pa);
2238                                                 status = qla2x00_fabric_login(
2239                                                     ha, fcport, &next_loopid);
2240                                         } else
2241                                                 status =
2242                                                     qla2x00_local_device_login(
2243                                                         ha, fcport);
2244
2245                                         if (status == QLA_SUCCESS) {
2246                                                 fcport->old_loop_id = fcport->loop_id;
2247
2248                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2249                                                     ha->host_no, fcport->loop_id));
2250
2251                                                 qla2x00_update_fcport(ha,
2252                                                     fcport);
2253                                         } else if (status == 1) {
2254                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2255                                                 /* retry the login again */
2256                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2257                                                     ha->host_no,
2258                                                     fcport->login_retry, fcport->loop_id));
2259                                         } else {
2260                                                 fcport->login_retry = 0;
2261                                         }
2262                                 }
2263                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2264                                         break;
2265                         }
2266                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2267                             ha->host_no));
2268                 }
2269
2270                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2271                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2272
2273                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2274                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2275                             ha->host_no));
2276
2277                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2278
2279                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2280                             ha->host_no));
2281                 }
2282
2283                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2284
2285                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2286                             ha->host_no));
2287
2288                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2289                             &ha->dpc_flags))) {
2290
2291                                 qla2x00_loop_resync(ha);
2292
2293                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2294                         }
2295
2296                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2297                             ha->host_no));
2298                 }
2299
2300                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2301
2302                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2303                             ha->host_no));
2304
2305                         qla2x00_rescan_fcports(ha);
2306
2307                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2308                             "end.\n",
2309                             ha->host_no));
2310                 }
2311
2312                 if (!ha->interrupts_on)
2313                         ha->isp_ops.enable_intrs(ha);
2314
2315                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2316                         ha->isp_ops.beacon_blink(ha);
2317
2318                 ha->dpc_active = 0;
2319         } /* End of while(1) */
2320
2321         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2322
2323         /*
2324          * Make sure that nobody tries to wake us up again.
2325          */
2326         ha->dpc_active = 0;
2327
2328         return 0;
2329 }
2330
2331 void
2332 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2333 {
2334         if (ha->dpc_thread)
2335                 wake_up_process(ha->dpc_thread);
2336 }
2337
2338 /*
2339 *  qla2x00_rst_aen
2340 *      Processes asynchronous reset.
2341 *
2342 * Input:
2343 *      ha  = adapter block pointer.
2344 */
2345 static void
2346 qla2x00_rst_aen(scsi_qla_host_t *ha)
2347 {
2348         if (ha->flags.online && !ha->flags.reset_active &&
2349             !atomic_read(&ha->loop_down_timer) &&
2350             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2351                 do {
2352                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2353
2354                         /*
2355                          * Issue marker command only when we are going to start
2356                          * the I/O.
2357                          */
2358                         ha->marker_needed = 1;
2359                 } while (!atomic_read(&ha->loop_down_timer) &&
2360                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2361         }
2362 }
2363
2364 static void
2365 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2366 {
2367         struct scsi_cmnd *cmd = sp->cmd;
2368
2369         if (sp->flags & SRB_DMA_VALID) {
2370                 if (cmd->use_sg) {
2371                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2372                             cmd->use_sg, cmd->sc_data_direction);
2373                 } else if (cmd->request_bufflen) {
2374                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2375                             cmd->request_bufflen, cmd->sc_data_direction);
2376                 }
2377                 sp->flags &= ~SRB_DMA_VALID;
2378         }
2379         CMD_SP(cmd) = NULL;
2380 }
2381
2382 void
2383 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2384 {
2385         struct scsi_cmnd *cmd = sp->cmd;
2386
2387         qla2x00_sp_free_dma(ha, sp);
2388
2389         mempool_free(sp, ha->srb_mempool);
2390
2391         cmd->scsi_done(cmd);
2392 }
2393
2394 /**************************************************************************
2395 *   qla2x00_timer
2396 *
2397 * Description:
2398 *   One second timer
2399 *
2400 * Context: Interrupt
2401 ***************************************************************************/
2402 static void
2403 qla2x00_timer(scsi_qla_host_t *ha)
2404 {
2405         unsigned long   cpu_flags = 0;
2406         fc_port_t       *fcport;
2407         int             start_dpc = 0;
2408         int             index;
2409         srb_t           *sp;
2410         int             t;
2411
2412         /*
2413          * Ports - Port down timer.
2414          *
2415          * Whenever, a port is in the LOST state we start decrementing its port
2416          * down timer every second until it reaches zero. Once  it reaches zero
2417          * the port it marked DEAD.
2418          */
2419         t = 0;
2420         list_for_each_entry(fcport, &ha->fcports, list) {
2421                 if (fcport->port_type != FCT_TARGET)
2422                         continue;
2423
2424                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2425
2426                         if (atomic_read(&fcport->port_down_timer) == 0)
2427                                 continue;
2428
2429                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2430                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2431
2432                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2433                             "%d remaining\n",
2434                             ha->host_no,
2435                             t, atomic_read(&fcport->port_down_timer)));
2436                 }
2437                 t++;
2438         } /* End of for fcport  */
2439
2440
2441         /* Loop down handler. */
2442         if (atomic_read(&ha->loop_down_timer) > 0 &&
2443             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2444
2445                 if (atomic_read(&ha->loop_down_timer) ==
2446                     ha->loop_down_abort_time) {
2447
2448                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2449                             "queues before time expire\n",
2450                             ha->host_no));
2451
2452                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2453                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2454
2455                         /* Schedule an ISP abort to return any tape commands. */
2456                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2457                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2458                             index++) {
2459                                 fc_port_t *sfcp;
2460
2461                                 sp = ha->outstanding_cmds[index];
2462                                 if (!sp)
2463                                         continue;
2464                                 sfcp = sp->fcport;
2465                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2466                                         continue;
2467
2468                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2469                                 break;
2470                         }
2471                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2472
2473                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2474                         start_dpc++;
2475                 }
2476
2477                 /* if the loop has been down for 4 minutes, reinit adapter */
2478                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2479                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2480                             "restarting queues.\n",
2481                             ha->host_no));
2482
2483                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2484                         start_dpc++;
2485
2486                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2487                                 DEBUG(printk("scsi(%ld): Loop down - "
2488                                     "aborting ISP.\n",
2489                                     ha->host_no));
2490                                 qla_printk(KERN_WARNING, ha,
2491                                     "Loop down - aborting ISP.\n");
2492
2493                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2494                         }
2495                 }
2496                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2497                     ha->host_no,
2498                     atomic_read(&ha->loop_down_timer)));
2499         }
2500
2501         /* Check if beacon LED needs to be blinked */
2502         if (ha->beacon_blink_led == 1) {
2503                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2504                 start_dpc++;
2505         }
2506
2507         /* Schedule the DPC routine if needed */
2508         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2509             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2510             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2511             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2512             start_dpc ||
2513             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2514             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2515             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2516             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2517                 qla2xxx_wake_dpc(ha);
2518
2519         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2520 }
2521
2522 /* XXX(hch): crude hack to emulate a down_timeout() */
2523 int
2524 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2525 {
2526         const unsigned int step = 100; /* msecs */
2527         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2528
2529         do {
2530                 if (!down_trylock(sema))
2531                         return 0;
2532                 if (msleep_interruptible(step))
2533                         break;
2534         } while (--iterations >= 0);
2535
2536         return -ETIMEDOUT;
2537 }
2538
2539 /* Firmware interface routines. */
2540
2541 #define FW_BLOBS        5
2542 #define FW_ISP21XX      0
2543 #define FW_ISP22XX      1
2544 #define FW_ISP2300      2
2545 #define FW_ISP2322      3
2546 #define FW_ISP24XX      4
2547
2548 static DECLARE_MUTEX(qla_fw_lock);
2549
2550 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2551         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2552         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2553         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2554         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2555         { .name = "ql2400_fw.bin", },
2556 };
2557
2558 struct fw_blob *
2559 qla2x00_request_firmware(scsi_qla_host_t *ha)
2560 {
2561         struct fw_blob *blob;
2562
2563         blob = NULL;
2564         if (IS_QLA2100(ha)) {
2565                 blob = &qla_fw_blobs[FW_ISP21XX];
2566         } else if (IS_QLA2200(ha)) {
2567                 blob = &qla_fw_blobs[FW_ISP22XX];
2568         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2569                 blob = &qla_fw_blobs[FW_ISP2300];
2570         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2571                 blob = &qla_fw_blobs[FW_ISP2322];
2572         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2573                 blob = &qla_fw_blobs[FW_ISP24XX];
2574         }
2575
2576         down(&qla_fw_lock);
2577         if (blob->fw)
2578                 goto out;
2579
2580         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2581                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2582                     "(%s).\n", ha->host_no, blob->name));
2583                 blob->fw = NULL;
2584                 blob = NULL;
2585                 goto out;
2586         }
2587
2588 out:
2589         up(&qla_fw_lock);
2590         return blob;
2591 }
2592
2593 static void
2594 qla2x00_release_firmware(void)
2595 {
2596         int idx;
2597
2598         down(&qla_fw_lock);
2599         for (idx = 0; idx < FW_BLOBS; idx++)
2600                 if (qla_fw_blobs[idx].fw)
2601                         release_firmware(qla_fw_blobs[idx].fw);
2602         up(&qla_fw_lock);
2603 }
2604
2605 static struct pci_device_id qla2xxx_pci_tbl[] = {
2606         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2607         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2608         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2609         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2610         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2611         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2612         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2613         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2614         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2615         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2616         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2617         { 0 },
2618 };
2619 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2620
2621 static int __devinit
2622 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2623 {
2624         return qla2x00_probe_one(pdev);
2625 }
2626
2627 static void __devexit
2628 qla2xxx_remove_one(struct pci_dev *pdev)
2629 {
2630         qla2x00_remove_one(pdev);
2631 }
2632
2633 static struct pci_driver qla2xxx_pci_driver = {
2634         .name           = "qla2xxx",
2635         .driver         = {
2636                 .owner          = THIS_MODULE,
2637         },
2638         .id_table       = qla2xxx_pci_tbl,
2639         .probe          = qla2xxx_probe_one,
2640         .remove         = __devexit_p(qla2xxx_remove_one),
2641 };
2642
2643 static inline int
2644 qla2x00_pci_module_init(void)
2645 {
2646         return pci_module_init(&qla2xxx_pci_driver);
2647 }
2648
2649 static inline void
2650 qla2x00_pci_module_exit(void)
2651 {
2652         pci_unregister_driver(&qla2xxx_pci_driver);
2653 }
2654
2655 /**
2656  * qla2x00_module_init - Module initialization.
2657  **/
2658 static int __init
2659 qla2x00_module_init(void)
2660 {
2661         int ret = 0;
2662
2663         /* Allocate cache for SRBs. */
2664         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2665             SLAB_HWCACHE_ALIGN, NULL, NULL);
2666         if (srb_cachep == NULL) {
2667                 printk(KERN_ERR
2668                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2669                 return -ENOMEM;
2670         }
2671
2672         /* Derive version string. */
2673         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2674 #if DEBUG_QLA2100
2675         strcat(qla2x00_version_str, "-debug");
2676 #endif
2677         qla2xxx_transport_template =
2678             fc_attach_transport(&qla2xxx_transport_functions);
2679         if (!qla2xxx_transport_template)
2680                 return -ENODEV;
2681
2682         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2683         ret = qla2x00_pci_module_init();
2684         if (ret) {
2685                 kmem_cache_destroy(srb_cachep);
2686                 fc_release_transport(qla2xxx_transport_template);
2687         }
2688         return ret;
2689 }
2690
2691 /**
2692  * qla2x00_module_exit - Module cleanup.
2693  **/
2694 static void __exit
2695 qla2x00_module_exit(void)
2696 {
2697         qla2x00_pci_module_exit();
2698         qla2x00_release_firmware();
2699         kmem_cache_destroy(srb_cachep);
2700         fc_release_transport(qla2xxx_transport_template);
2701 }
2702
2703 module_init(qla2x00_module_init);
2704 module_exit(qla2x00_module_exit);
2705
2706 MODULE_AUTHOR("QLogic Corporation");
2707 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2708 MODULE_LICENSE("GPL");
2709 MODULE_VERSION(QLA2XXX_VERSION);