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 int ql2xallocfwdump = 1;
  58 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  59 MODULE_PARM_DESC(ql2xallocfwdump,
  60                 "Option to enable allocation of memory for a firmware dump "
  61                 "during HBA initialization.  Memory allocation requirements "
  62                 "vary by ISP type.  Default is 1 - allocate memory.");
  63
  64 int qla2_extended_error_logging;
  65 module_param(qla2_extended_error_logging, int, S_IRUGO|S_IRUSR);
  66 MODULE_PARM_DESC(qla2_extended_error_logging,
  67                 "Option to enable extended error logging, "
  68                 "Default is 0 - no logging. 1 - log errors.");
  69
  70 static void qla2x00_free_device(scsi_qla_host_t *);
  71
  72 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  73
  74 int ql2xfdmienable;
  75 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xfdmienable,
  77                 "Enables FDMI registratons "
  78                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  79
  80 /*
  81  * SCSI host template entry points
  82  */
  83 static int qla2xxx_slave_configure(struct scsi_device * device);
  84 static int qla2xxx_slave_alloc(struct scsi_device *);
  85 static void qla2xxx_slave_destroy(struct scsi_device *);
  86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  87                 void (*fn)(struct scsi_cmnd *));
  88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  89                 void (*fn)(struct scsi_cmnd *));
  90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  96
  97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  98 static int qla2x00_change_queue_type(struct scsi_device *, int);
  99
 100 static struct scsi_host_template qla2x00_driver_template = {
 101         .module                 = THIS_MODULE,
 102         .name                   = QLA2XXX_DRIVER_NAME,
 103         .queuecommand           = qla2x00_queuecommand,
 104
 105         .eh_abort_handler       = qla2xxx_eh_abort,
 106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 109
 110         .slave_configure        = qla2xxx_slave_configure,
 111
 112         .slave_alloc            = qla2xxx_slave_alloc,
 113         .slave_destroy          = qla2xxx_slave_destroy,
 114         .change_queue_depth     = qla2x00_change_queue_depth,
 115         .change_queue_type      = qla2x00_change_queue_type,
 116         .this_id                = -1,
 117         .cmd_per_lun            = 3,
 118         .use_clustering         = ENABLE_CLUSTERING,
 119         .sg_tablesize           = SG_ALL,
 120
 121         /*
 122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 123          * which equates to 0x800000 sectors.
 124          */
 125         .max_sectors            = 0xFFFF,
 126         .shost_attrs            = qla2x00_host_attrs,
 127 };
 128
 129 static struct scsi_host_template qla24xx_driver_template = {
 130         .module                 = THIS_MODULE,
 131         .name                   = QLA2XXX_DRIVER_NAME,
 132         .queuecommand           = qla24xx_queuecommand,
 133
 134         .eh_abort_handler       = qla2xxx_eh_abort,
 135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 138
 139         .slave_configure        = qla2xxx_slave_configure,
 140
 141         .slave_alloc            = qla2xxx_slave_alloc,
 142         .slave_destroy          = qla2xxx_slave_destroy,
 143         .change_queue_depth     = qla2x00_change_queue_depth,
 144         .change_queue_type      = qla2x00_change_queue_type,
 145         .this_id                = -1,
 146         .cmd_per_lun            = 3,
 147         .use_clustering         = ENABLE_CLUSTERING,
 148         .sg_tablesize           = SG_ALL,
 149
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 155
 156 /* TODO Convert to inlines
 157  *
 158  * Timer routines
 159  */
 160 #define WATCH_INTERVAL          1       /* number of seconds */
 161
 162 static void qla2x00_timer(scsi_qla_host_t *);
 163
 164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 165     void *, unsigned long);
 166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 168
 169 static inline void
 170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 171 {
 172         init_timer(&ha->timer);
 173         ha->timer.expires = jiffies + interval * HZ;
 174         ha->timer.data = (unsigned long)ha;
 175         ha->timer.function = (void (*)(unsigned long))func;
 176         add_timer(&ha->timer);
 177         ha->timer_active = 1;
 178 }
 179
 180 static inline void
 181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 182 {
 183         mod_timer(&ha->timer, jiffies + interval * HZ);
 184 }
 185
 186 static __inline__ void
 187 qla2x00_stop_timer(scsi_qla_host_t *ha)
 188 {
 189         del_timer_sync(&ha->timer);
 190         ha->timer_active = 0;
 191 }
 192
 193 static int qla2x00_do_dpc(void *data);
 194
 195 static void qla2x00_rst_aen(scsi_qla_host_t *);
 196
 197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 203
 204 /* -------------------------------------------------------------------------- */
 205
 206 static char *
 207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 208 {
 209         static char *pci_bus_modes[] = {
 210                 "33", "66", "100", "133",
 211         };
 212         uint16_t pci_bus;
 213
 214         strcpy(str, "PCI");
 215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 216         if (pci_bus) {
 217                 strcat(str, "-X (");
 218                 strcat(str, pci_bus_modes[pci_bus]);
 219         } else {
 220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 221                 strcat(str, " (");
 222                 strcat(str, pci_bus_modes[pci_bus]);
 223         }
 224         strcat(str, " MHz)");
 225
 226         return (str);
 227 }
 228
 229 static char *
 230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 231 {
 232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 233         uint32_t pci_bus;
 234         int pcie_reg;
 235
 236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 237         if (pcie_reg) {
 238                 char lwstr[6];
 239                 uint16_t pcie_lstat, lspeed, lwidth;
 240
 241                 pcie_reg += 0x12;
 242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 244                 lwidth = (pcie_lstat &
 245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 246
 247                 strcpy(str, "PCIe (");
 248                 if (lspeed == 1)
 249                         strcat(str, "2.5Gb/s ");
 250                 else
 251                         strcat(str, "<unknown> ");
 252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 253                 strcat(str, lwstr);
 254
 255                 return str;
 256         }
 257
 258         strcpy(str, "PCI");
 259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 260         if (pci_bus == 0 || pci_bus == 8) {
 261                 strcat(str, " (");
 262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 263         } else {
 264                 strcat(str, "-X ");
 265                 if (pci_bus & BIT_2)
 266                         strcat(str, "Mode 2");
 267                 else
 268                         strcat(str, "Mode 1");
 269                 strcat(str, " (");
 270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 271         }
 272         strcat(str, " MHz)");
 273
 274         return str;
 275 }
 276
 277 char *
 278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 279 {
 280         char un_str[10];
 281
 282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 283             ha->fw_minor_version,
 284             ha->fw_subminor_version);
 285
 286         if (ha->fw_attributes & BIT_9) {
 287                 strcat(str, "FLX");
 288                 return (str);
 289         }
 290
 291         switch (ha->fw_attributes & 0xFF) {
 292         case 0x7:
 293                 strcat(str, "EF");
 294                 break;
 295         case 0x17:
 296                 strcat(str, "TP");
 297                 break;
 298         case 0x37:
 299                 strcat(str, "IP");
 300                 break;
 301         case 0x77:
 302                 strcat(str, "VI");
 303                 break;
 304         default:
 305                 sprintf(un_str, "(%x)", ha->fw_attributes);
 306                 strcat(str, un_str);
 307                 break;
 308         }
 309         if (ha->fw_attributes & 0x100)
 310                 strcat(str, "X");
 311
 312         return (str);
 313 }
 314
 315 char *
 316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 317 {
 318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 319             ha->fw_minor_version,
 320             ha->fw_subminor_version);
 321
 322         if (ha->fw_attributes & BIT_0)
 323                 strcat(str, "[Class 2] ");
 324         if (ha->fw_attributes & BIT_1)
 325                 strcat(str, "[IP] ");
 326         if (ha->fw_attributes & BIT_2)
 327                 strcat(str, "[Multi-ID] ");
 328         if (ha->fw_attributes & BIT_13)
 329                 strcat(str, "[Experimental]");
 330         return str;
 331 }
 332
 333 static inline srb_t *
 334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 336 {
 337         srb_t *sp;
 338
 339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 340         if (!sp)
 341                 return sp;
 342
 343         sp->ha = ha;
 344         sp->fcport = fcport;
 345         sp->cmd = cmd;
 346         sp->flags = 0;
 347         CMD_SP(cmd) = (void *)sp;
 348         cmd->scsi_done = done;
 349
 350         return sp;
 351 }
 352
 353 static int
 354 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 355 {
 356         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 357         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 358         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 359         srb_t *sp;
 360         int rval;
 361
 362         rval = fc_remote_port_chkready(rport);
 363         if (rval) {
 364                 cmd->result = rval;
 365                 goto qc_fail_command;
 366         }
 367
 368         /* Close window on fcport/rport state-transitioning. */
 369         if (!*(fc_port_t **)rport->dd_data) {
 370                 cmd->result = DID_IMM_RETRY << 16;
 371                 goto qc_fail_command;
 372         }
 373
 374         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 375                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 376                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 377                         cmd->result = DID_NO_CONNECT << 16;
 378                         goto qc_fail_command;
 379                 }
 380                 goto qc_host_busy;
 381         }
 382
 383         spin_unlock_irq(ha->host->host_lock);
 384
 385         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 386         if (!sp)
 387                 goto qc_host_busy_lock;
 388
 389         rval = qla2x00_start_scsi(sp);
 390         if (rval != QLA_SUCCESS)
 391                 goto qc_host_busy_free_sp;
 392
 393         spin_lock_irq(ha->host->host_lock);
 394
 395         return 0;
 396
 397 qc_host_busy_free_sp:
 398         qla2x00_sp_free_dma(ha, sp);
 399         mempool_free(sp, ha->srb_mempool);
 400
 401 qc_host_busy_lock:
 402         spin_lock_irq(ha->host->host_lock);
 403
 404 qc_host_busy:
 405         return SCSI_MLQUEUE_HOST_BUSY;
 406
 407 qc_fail_command:
 408         done(cmd);
 409
 410         return 0;
 411 }
 412
 413
 414 static int
 415 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 416 {
 417         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 418         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 419         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 420         srb_t *sp;
 421         int rval;
 422
 423         rval = fc_remote_port_chkready(rport);
 424         if (rval) {
 425                 cmd->result = rval;
 426                 goto qc24_fail_command;
 427         }
 428
 429         /* Close window on fcport/rport state-transitioning. */
 430         if (!*(fc_port_t **)rport->dd_data) {
 431                 cmd->result = DID_IMM_RETRY << 16;
 432                 goto qc24_fail_command;
 433         }
 434
 435         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 436                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 437                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 438                         cmd->result = DID_NO_CONNECT << 16;
 439                         goto qc24_fail_command;
 440                 }
 441                 goto qc24_host_busy;
 442         }
 443
 444         spin_unlock_irq(ha->host->host_lock);
 445
 446         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 447         if (!sp)
 448                 goto qc24_host_busy_lock;
 449
 450         rval = qla24xx_start_scsi(sp);
 451         if (rval != QLA_SUCCESS)
 452                 goto qc24_host_busy_free_sp;
 453
 454         spin_lock_irq(ha->host->host_lock);
 455
 456         return 0;
 457
 458 qc24_host_busy_free_sp:
 459         qla2x00_sp_free_dma(ha, sp);
 460         mempool_free(sp, ha->srb_mempool);
 461
 462 qc24_host_busy_lock:
 463         spin_lock_irq(ha->host->host_lock);
 464
 465 qc24_host_busy:
 466         return SCSI_MLQUEUE_HOST_BUSY;
 467
 468 qc24_fail_command:
 469         done(cmd);
 470
 471         return 0;
 472 }
 473
 474
 475 /*
 476  * qla2x00_eh_wait_on_command
 477  *    Waits for the command to be returned by the Firmware for some
 478  *    max time.
 479  *
 480  * Input:
 481  *    ha = actual ha whose done queue will contain the command
 482  *            returned by firmware.
 483  *    cmd = Scsi Command to wait on.
 484  *    flag = Abort/Reset(Bus or Device Reset)
 485  *
 486  * Return:
 487  *    Not Found : 0
 488  *    Found : 1
 489  */
 490 static int
 491 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 492 {
 493 #define ABORT_POLLING_PERIOD    1000
 494 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 495         unsigned long wait_iter = ABORT_WAIT_ITER;
 496         int ret = QLA_SUCCESS;
 497
 498         while (CMD_SP(cmd)) {
 499                 msleep(ABORT_POLLING_PERIOD);
 500
 501                 if (--wait_iter)
 502                         break;
 503         }
 504         if (CMD_SP(cmd))
 505                 ret = QLA_FUNCTION_FAILED;
 506
 507         return ret;
 508 }
 509
 510 /*
 511  * qla2x00_wait_for_hba_online
 512  *    Wait till the HBA is online after going through
 513  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 514  *    finally HBA is disabled ie marked offline
 515  *
 516  * Input:
 517  *     ha - pointer to host adapter structure
 518  *
 519  * Note:
 520  *    Does context switching-Release SPIN_LOCK
 521  *    (if any) before calling this routine.
 522  *
 523  * Return:
 524  *    Success (Adapter is online) : 0
 525  *    Failed  (Adapter is offline/disabled) : 1
 526  */
 527 int
 528 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 529 {
 530         int             return_status;
 531         unsigned long   wait_online;
 532
 533         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 534         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 535             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 536             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 537             ha->dpc_active) && time_before(jiffies, wait_online)) {
 538
 539                 msleep(1000);
 540         }
 541         if (ha->flags.online)
 542                 return_status = QLA_SUCCESS;
 543         else
 544                 return_status = QLA_FUNCTION_FAILED;
 545
 546         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 547
 548         return (return_status);
 549 }
 550
 551 /*
 552  * qla2x00_wait_for_loop_ready
 553  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 554  *    to be in LOOP_READY state.
 555  * Input:
 556  *     ha - pointer to host adapter structure
 557  *
 558  * Note:
 559  *    Does context switching-Release SPIN_LOCK
 560  *    (if any) before calling this routine.
 561  *
 562  *
 563  * Return:
 564  *    Success (LOOP_READY) : 0
 565  *    Failed  (LOOP_NOT_READY) : 1
 566  */
 567 static inline int
 568 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 569 {
 570         int      return_status = QLA_SUCCESS;
 571         unsigned long loop_timeout ;
 572
 573         /* wait for 5 min at the max for loop to be ready */
 574         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 575
 576         while ((!atomic_read(&ha->loop_down_timer) &&
 577             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 578             atomic_read(&ha->loop_state) != LOOP_READY) {
 579                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 580                         return_status = QLA_FUNCTION_FAILED;
 581                         break;
 582                 }
 583                 msleep(1000);
 584                 if (time_after_eq(jiffies, loop_timeout)) {
 585                         return_status = QLA_FUNCTION_FAILED;
 586                         break;
 587                 }
 588         }
 589         return (return_status);
 590 }
 591
 592 static void
 593 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 594 {
 595         struct Scsi_Host *shost = cmnd->device->host;
 596         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 597         unsigned long flags;
 598
 599         spin_lock_irqsave(shost->host_lock, flags);
 600         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 601                 spin_unlock_irqrestore(shost->host_lock, flags);
 602                 msleep(1000);
 603                 spin_lock_irqsave(shost->host_lock, flags);
 604         }
 605         spin_unlock_irqrestore(shost->host_lock, flags);
 606         return;
 607 }
 608
 609 /**************************************************************************
 610 * qla2xxx_eh_abort
 611 *
 612 * Description:
 613 *    The abort function will abort the specified command.
 614 *
 615 * Input:
 616 *    cmd = Linux SCSI command packet to be aborted.
 617 *
 618 * Returns:
 619 *    Either SUCCESS or FAILED.
 620 *
 621 * Note:
 622 *    Only return FAILED if command not returned by firmware.
 623 **************************************************************************/
 624 int
 625 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 626 {
 627         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 628         srb_t *sp;
 629         int ret, i;
 630         unsigned int id, lun;
 631         unsigned long serial;
 632         unsigned long flags;
 633         int wait = 0;
 634
 635         qla2x00_block_error_handler(cmd);
 636
 637         if (!CMD_SP(cmd))
 638                 return SUCCESS;
 639
 640         ret = SUCCESS;
 641
 642         id = cmd->device->id;
 643         lun = cmd->device->lun;
 644         serial = cmd->serial_number;
 645
 646         /* Check active list for command command. */
 647         spin_lock_irqsave(&ha->hardware_lock, flags);
 648         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 649                 sp = ha->outstanding_cmds[i];
 650
 651                 if (sp == NULL)
 652                         continue;
 653
 654                 if (sp->cmd != cmd)
 655                         continue;
 656
 657                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 658                     __func__, ha->host_no, sp, serial));
 659                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 660
 661                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 662                 if (ha->isp_ops.abort_command(ha, sp)) {
 663                         DEBUG2(printk("%s(%ld): abort_command "
 664                             "mbx failed.\n", __func__, ha->host_no));
 665                 } else {
 666                         DEBUG3(printk("%s(%ld): abort_command "
 667                             "mbx success.\n", __func__, ha->host_no));
 668                         wait = 1;
 669                 }
 670                 spin_lock_irqsave(&ha->hardware_lock, flags);
 671
 672                 break;
 673         }
 674         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 675
 676         /* Wait for the command to be returned. */
 677         if (wait) {
 678                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 679                         qla_printk(KERN_ERR, ha,
 680                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 681                             "%x.\n", ha->host_no, id, lun, serial, ret);
 682                         ret = FAILED;
 683                 }
 684         }
 685
 686         qla_printk(KERN_INFO, ha,
 687             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 688             ha->host_no, id, lun, wait, serial, ret);
 689
 690         return ret;
 691 }
 692
 693 /**************************************************************************
 694 * qla2x00_eh_wait_for_pending_target_commands
 695 *
 696 * Description:
 697 *    Waits for all the commands to come back from the specified target.
 698 *
 699 * Input:
 700 *    ha - pointer to scsi_qla_host structure.
 701 *    t  - target
 702 * Returns:
 703 *    Either SUCCESS or FAILED.
 704 *
 705 * Note:
 706 **************************************************************************/
 707 static int
 708 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 709 {
 710         int     cnt;
 711         int     status;
 712         srb_t           *sp;
 713         struct scsi_cmnd *cmd;
 714         unsigned long flags;
 715
 716         status = 0;
 717
 718         /*
 719          * Waiting for all commands for the designated target in the active
 720          * array
 721          */
 722         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 723                 spin_lock_irqsave(&ha->hardware_lock, flags);
 724                 sp = ha->outstanding_cmds[cnt];
 725                 if (sp) {
 726                         cmd = sp->cmd;
 727                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 728                         if (cmd->device->id == t) {
 729                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 730                                         status = 1;
 731                                         break;
 732                                 }
 733                         }
 734                 } else {
 735                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 736                 }
 737         }
 738         return (status);
 739 }
 740
 741
 742 /**************************************************************************
 743 * qla2xxx_eh_device_reset
 744 *
 745 * Description:
 746 *    The device reset function will reset the target and abort any
 747 *    executing commands.
 748 *
 749 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 750 *          attempt to use this value, even if you determine it is
 751 *          non-null.
 752 *
 753 * Input:
 754 *    cmd = Linux SCSI command packet of the command that cause the
 755 *          bus device reset.
 756 *
 757 * Returns:
 758 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 759 *
 760 **************************************************************************/
 761 int
 762 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 763 {
 764         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 765         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 766         int ret;
 767         unsigned int id, lun;
 768         unsigned long serial;
 769
 770         qla2x00_block_error_handler(cmd);
 771
 772         ret = FAILED;
 773
 774         id = cmd->device->id;
 775         lun = cmd->device->lun;
 776         serial = cmd->serial_number;
 777
 778         if (!fcport)
 779                 return ret;
 780
 781         qla_printk(KERN_INFO, ha,
 782             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 783
 784         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 785                 goto eh_dev_reset_done;
 786
 787         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 788                 if (qla2x00_device_reset(ha, fcport) == 0)
 789                         ret = SUCCESS;
 790
 791 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 792                 if (ret == SUCCESS) {
 793                         if (fcport->flags & FC_FABRIC_DEVICE) {
 794                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 795                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 796                         }
 797                 }
 798 #endif
 799         } else {
 800                 DEBUG2(printk(KERN_INFO
 801                     "%s failed: loop not ready\n",__func__));
 802         }
 803
 804         if (ret == FAILED) {
 805                 DEBUG3(printk("%s(%ld): device reset failed\n",
 806                     __func__, ha->host_no));
 807                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 808                     __func__);
 809
 810                 goto eh_dev_reset_done;
 811         }
 812
 813         /* Flush outstanding commands. */
 814         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 815                 ret = FAILED;
 816         if (ret == FAILED) {
 817                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 818                     __func__, ha->host_no));
 819                 qla_printk(KERN_INFO, ha,
 820                     "%s: failed while waiting for commands\n", __func__);
 821         } else
 822                 qla_printk(KERN_INFO, ha,
 823                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 824                     id, lun);
 825  eh_dev_reset_done:
 826         return ret;
 827 }
 828
 829 /**************************************************************************
 830 * qla2x00_eh_wait_for_pending_commands
 831 *
 832 * Description:
 833 *    Waits for all the commands to come back from the specified host.
 834 *
 835 * Input:
 836 *    ha - pointer to scsi_qla_host structure.
 837 *
 838 * Returns:
 839 *    1 : SUCCESS
 840 *    0 : FAILED
 841 *
 842 * Note:
 843 **************************************************************************/
 844 static int
 845 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 846 {
 847         int     cnt;
 848         int     status;
 849         srb_t           *sp;
 850         struct scsi_cmnd *cmd;
 851         unsigned long flags;
 852
 853         status = 1;
 854
 855         /*
 856          * Waiting for all commands for the designated target in the active
 857          * array
 858          */
 859         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 860                 spin_lock_irqsave(&ha->hardware_lock, flags);
 861                 sp = ha->outstanding_cmds[cnt];
 862                 if (sp) {
 863                         cmd = sp->cmd;
 864                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 865                         status = qla2x00_eh_wait_on_command(ha, cmd);
 866                         if (status == 0)
 867                                 break;
 868                 }
 869                 else {
 870                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 871                 }
 872         }
 873         return (status);
 874 }
 875
 876
 877 /**************************************************************************
 878 * qla2xxx_eh_bus_reset
 879 *
 880 * Description:
 881 *    The bus reset function will reset the bus and abort any executing
 882 *    commands.
 883 *
 884 * Input:
 885 *    cmd = Linux SCSI command packet of the command that cause the
 886 *          bus reset.
 887 *
 888 * Returns:
 889 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 890 *
 891 **************************************************************************/
 892 int
 893 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 894 {
 895         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 896         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 897         int ret;
 898         unsigned int id, lun;
 899         unsigned long serial;
 900
 901         qla2x00_block_error_handler(cmd);
 902
 903         ret = FAILED;
 904
 905         id = cmd->device->id;
 906         lun = cmd->device->lun;
 907         serial = cmd->serial_number;
 908
 909         if (!fcport)
 910                 return ret;
 911
 912         qla_printk(KERN_INFO, ha,
 913             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 914
 915         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 916                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 917                 goto eh_bus_reset_done;
 918         }
 919
 920         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 921                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 922                         ret = SUCCESS;
 923         }
 924         if (ret == FAILED)
 925                 goto eh_bus_reset_done;
 926
 927         /* Flush outstanding commands. */
 928         if (!qla2x00_eh_wait_for_pending_commands(ha))
 929                 ret = FAILED;
 930
 931 eh_bus_reset_done:
 932         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 933             (ret == FAILED) ? "failed" : "succeded");
 934
 935         return ret;
 936 }
 937
 938 /**************************************************************************
 939 * qla2xxx_eh_host_reset
 940 *
 941 * Description:
 942 *    The reset function will reset the Adapter.
 943 *
 944 * Input:
 945 *      cmd = Linux SCSI command packet of the command that cause the
 946 *            adapter reset.
 947 *
 948 * Returns:
 949 *      Either SUCCESS or FAILED.
 950 *
 951 * Note:
 952 **************************************************************************/
 953 int
 954 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 955 {
 956         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 957         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 958         int ret;
 959         unsigned int id, lun;
 960         unsigned long serial;
 961
 962         qla2x00_block_error_handler(cmd);
 963
 964         ret = FAILED;
 965
 966         id = cmd->device->id;
 967         lun = cmd->device->lun;
 968         serial = cmd->serial_number;
 969
 970         if (!fcport)
 971                 return ret;
 972
 973         qla_printk(KERN_INFO, ha,
 974             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 975
 976         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 977                 goto eh_host_reset_lock;
 978
 979         /*
 980          * Fixme-may be dpc thread is active and processing
 981          * loop_resync,so wait a while for it to
 982          * be completed and then issue big hammer.Otherwise
 983          * it may cause I/O failure as big hammer marks the
 984          * devices as lost kicking of the port_down_timer
 985          * while dpc is stuck for the mailbox to complete.
 986          */
 987         qla2x00_wait_for_loop_ready(ha);
 988         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 989         if (qla2x00_abort_isp(ha)) {
 990                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 991                 /* failed. schedule dpc to try */
 992                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 993
 994                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 995                         goto eh_host_reset_lock;
 996         }
 997         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 998
 999         /* Waiting for our command in done_queue to be returned to OS.*/
1000         if (qla2x00_eh_wait_for_pending_commands(ha))
1001                 ret = SUCCESS;
1002
1003 eh_host_reset_lock:
1004         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1005             (ret == FAILED) ? "failed" : "succeded");
1006
1007         return ret;
1008 }
1009
1010 /*
1011 * qla2x00_loop_reset
1012 *      Issue loop reset.
1013 *
1014 * Input:
1015 *      ha = adapter block pointer.
1016 *
1017 * Returns:
1018 *      0 = success
1019 */
1020 static int
1021 qla2x00_loop_reset(scsi_qla_host_t *ha)
1022 {
1023         int status = QLA_SUCCESS;
1024         struct fc_port *fcport;
1025
1026         if (ha->flags.enable_lip_reset) {
1027                 status = qla2x00_lip_reset(ha);
1028         }
1029
1030         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1031                 list_for_each_entry(fcport, &ha->fcports, list) {
1032                         if (fcport->port_type != FCT_TARGET)
1033                                 continue;
1034
1035                         status = qla2x00_device_reset(ha, fcport);
1036                         if (status != QLA_SUCCESS)
1037                                 break;
1038                 }
1039         }
1040
1041         if (status == QLA_SUCCESS &&
1042                 ((!ha->flags.enable_target_reset &&
1043                   !ha->flags.enable_lip_reset) ||
1044                 ha->flags.enable_lip_full_login)) {
1045
1046                 status = qla2x00_full_login_lip(ha);
1047         }
1048
1049         /* Issue marker command only when we are going to start the I/O */
1050         ha->marker_needed = 1;
1051
1052         if (status) {
1053                 /* Empty */
1054                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1055                                 __func__,
1056                                 ha->host_no));
1057         } else {
1058                 /* Empty */
1059                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1060                                 __func__,
1061                                 ha->host_no));
1062         }
1063
1064         return(status);
1065 }
1066
1067 /*
1068  * qla2x00_device_reset
1069  *      Issue bus device reset message to the target.
1070  *
1071  * Input:
1072  *      ha = adapter block pointer.
1073  *      t = SCSI ID.
1074  *      TARGET_QUEUE_LOCK must be released.
1075  *      ADAPTER_STATE_LOCK must be released.
1076  *
1077  * Context:
1078  *      Kernel context.
1079  */
1080 static int
1081 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1082 {
1083         /* Abort Target command will clear Reservation */
1084         return ha->isp_ops.abort_target(reset_fcport);
1085 }
1086
1087 static int
1088 qla2xxx_slave_alloc(struct scsi_device *sdev)
1089 {
1090         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1091
1092         if (!rport || fc_remote_port_chkready(rport))
1093                 return -ENXIO;
1094
1095         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1096
1097         return 0;
1098 }
1099
1100 static int
1101 qla2xxx_slave_configure(struct scsi_device *sdev)
1102 {
1103         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1104         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1105
1106         if (sdev->tagged_supported)
1107                 scsi_activate_tcq(sdev, 32);
1108         else
1109                 scsi_deactivate_tcq(sdev, 32);
1110
1111         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1112
1113         return 0;
1114 }
1115
1116 static void
1117 qla2xxx_slave_destroy(struct scsi_device *sdev)
1118 {
1119         sdev->hostdata = NULL;
1120 }
1121
1122 static int
1123 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1124 {
1125         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1126         return sdev->queue_depth;
1127 }
1128
1129 static int
1130 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1131 {
1132         if (sdev->tagged_supported) {
1133                 scsi_set_tag_type(sdev, tag_type);
1134                 if (tag_type)
1135                         scsi_activate_tcq(sdev, sdev->queue_depth);
1136                 else
1137                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1138         } else
1139                 tag_type = 0;
1140
1141         return tag_type;
1142 }
1143
1144 /**
1145  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1146  * @ha: HA context
1147  *
1148  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1149  * supported addressing method.
1150  */
1151 static void
1152 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1153 {
1154         /* Assume a 32bit DMA mask. */
1155         ha->flags.enable_64bit_addressing = 0;
1156
1157         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1158                 /* Any upper-dword bits set? */
1159                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1160                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1161                         /* Ok, a 64bit DMA mask is applicable. */
1162                         ha->flags.enable_64bit_addressing = 1;
1163                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1164                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1165                         return;
1166                 }
1167         }
1168
1169         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1170         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1171 }
1172
1173 static inline void
1174 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1175 {
1176         ha->device_type = DT_EXTENDED_IDS;
1177         switch (ha->pdev->device) {
1178         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1179                 ha->device_type |= DT_ISP2100;
1180                 ha->device_type &= ~DT_EXTENDED_IDS;
1181                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1182                 break;
1183         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1184                 ha->device_type |= DT_ISP2200;
1185                 ha->device_type &= ~DT_EXTENDED_IDS;
1186                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1187                 break;
1188         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1189                 ha->device_type |= DT_ISP2300;
1190                 ha->device_type |= DT_ZIO_SUPPORTED;
1191                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1192                 break;
1193         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1194                 ha->device_type |= DT_ISP2312;
1195                 ha->device_type |= DT_ZIO_SUPPORTED;
1196                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1197                 break;
1198         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1199                 ha->device_type |= DT_ISP2322;
1200                 ha->device_type |= DT_ZIO_SUPPORTED;
1201                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1202                     ha->pdev->subsystem_device == 0x0170)
1203                         ha->device_type |= DT_OEM_001;
1204                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1205                 break;
1206         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1207                 ha->device_type |= DT_ISP6312;
1208                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1209                 break;
1210         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1211                 ha->device_type |= DT_ISP6322;
1212                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1213                 break;
1214         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1215                 ha->device_type |= DT_ISP2422;
1216                 ha->device_type |= DT_ZIO_SUPPORTED;
1217                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1218                 break;
1219         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1220                 ha->device_type |= DT_ISP2432;
1221                 ha->device_type |= DT_ZIO_SUPPORTED;
1222                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1223                 break;
1224         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1225                 ha->device_type |= DT_ISP5422;
1226                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1227                 break;
1228         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1229                 ha->device_type |= DT_ISP5432;
1230                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1231                 break;
1232         }
1233 }
1234
1235 static int
1236 qla2x00_iospace_config(scsi_qla_host_t *ha)
1237 {
1238         unsigned long   pio, pio_len, pio_flags;
1239         unsigned long   mmio, mmio_len, mmio_flags;
1240
1241         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1242         pio = pci_resource_start(ha->pdev, 0);
1243         pio_len = pci_resource_len(ha->pdev, 0);
1244         pio_flags = pci_resource_flags(ha->pdev, 0);
1245         if (pio_flags & IORESOURCE_IO) {
1246                 if (pio_len < MIN_IOBASE_LEN) {
1247                         qla_printk(KERN_WARNING, ha,
1248                             "Invalid PCI I/O region size (%s)...\n",
1249                                 pci_name(ha->pdev));
1250                         pio = 0;
1251                 }
1252         } else {
1253                 qla_printk(KERN_WARNING, ha,
1254                     "region #0 not a PIO resource (%s)...\n",
1255                     pci_name(ha->pdev));
1256                 pio = 0;
1257         }
1258
1259         /* Use MMIO operations for all accesses. */
1260         mmio = pci_resource_start(ha->pdev, 1);
1261         mmio_len = pci_resource_len(ha->pdev, 1);
1262         mmio_flags = pci_resource_flags(ha->pdev, 1);
1263
1264         if (!(mmio_flags & IORESOURCE_MEM)) {
1265                 qla_printk(KERN_ERR, ha,
1266                     "region #0 not an MMIO resource (%s), aborting\n",
1267                     pci_name(ha->pdev));
1268                 goto iospace_error_exit;
1269         }
1270         if (mmio_len < MIN_IOBASE_LEN) {
1271                 qla_printk(KERN_ERR, ha,
1272                     "Invalid PCI mem region size (%s), aborting\n",
1273                         pci_name(ha->pdev));
1274                 goto iospace_error_exit;
1275         }
1276
1277         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1278                 qla_printk(KERN_WARNING, ha,
1279                     "Failed to reserve PIO/MMIO regions (%s)\n",
1280                     pci_name(ha->pdev));
1281
1282                 goto iospace_error_exit;
1283         }
1284
1285         ha->pio_address = pio;
1286         ha->pio_length = pio_len;
1287         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1288         if (!ha->iobase) {
1289                 qla_printk(KERN_ERR, ha,
1290                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1291
1292                 goto iospace_error_exit;
1293         }
1294
1295         return (0);
1296
1297 iospace_error_exit:
1298         return (-ENOMEM);
1299 }
1300
1301 static void
1302 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1303 {
1304         unsigned long flags = 0;
1305         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1306
1307         spin_lock_irqsave(&ha->hardware_lock, flags);
1308         ha->interrupts_on = 1;
1309         /* enable risc and host interrupts */
1310         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1311         RD_REG_WORD(&reg->ictrl);
1312         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1313
1314 }
1315
1316 static void
1317 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1318 {
1319         unsigned long flags = 0;
1320         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1321
1322         spin_lock_irqsave(&ha->hardware_lock, flags);
1323         ha->interrupts_on = 0;
1324         /* disable risc and host interrupts */
1325         WRT_REG_WORD(&reg->ictrl, 0);
1326         RD_REG_WORD(&reg->ictrl);
1327         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1328 }
1329
1330 static void
1331 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1332 {
1333         unsigned long flags = 0;
1334         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1335
1336         spin_lock_irqsave(&ha->hardware_lock, flags);
1337         ha->interrupts_on = 1;
1338         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1339         RD_REG_DWORD(&reg->ictrl);
1340         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1341 }
1342
1343 static void
1344 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1345 {
1346         unsigned long flags = 0;
1347         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1348
1349         spin_lock_irqsave(&ha->hardware_lock, flags);
1350         ha->interrupts_on = 0;
1351         WRT_REG_DWORD(&reg->ictrl, 0);
1352         RD_REG_DWORD(&reg->ictrl);
1353         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1354 }
1355
1356 /*
1357  * PCI driver interface
1358  */
1359 static int __devinit
1360 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1361 {
1362         int     ret = -ENODEV;
1363         device_reg_t __iomem *reg;
1364         struct Scsi_Host *host;
1365         scsi_qla_host_t *ha;
1366         unsigned long   flags = 0;
1367         unsigned long   wait_switch = 0;
1368         char pci_info[20];
1369         char fw_str[30];
1370         fc_port_t *fcport;
1371         struct scsi_host_template *sht;
1372
1373         if (pci_enable_device(pdev))
1374                 goto probe_out;
1375
1376         sht = &qla2x00_driver_template;
1377         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1378             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1379                 sht = &qla24xx_driver_template;
1380         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1381         if (host == NULL) {
1382                 printk(KERN_WARNING
1383                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1384                 goto probe_disable_device;
1385         }
1386
1387         /* Clear our data area */
1388         ha = (scsi_qla_host_t *)host->hostdata;
1389         memset(ha, 0, sizeof(scsi_qla_host_t));
1390
1391         ha->pdev = pdev;
1392         ha->host = host;
1393         ha->host_no = host->host_no;
1394         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1395
1396         /* Set ISP-type information. */
1397         qla2x00_set_isp_flags(ha);
1398
1399         /* Configure PCI I/O space */
1400         ret = qla2x00_iospace_config(ha);
1401         if (ret)
1402                 goto probe_failed;
1403
1404         qla_printk(KERN_INFO, ha,
1405             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1406             ha->iobase);
1407
1408         spin_lock_init(&ha->hardware_lock);
1409
1410         ha->prev_topology = 0;
1411         ha->init_cb_size = sizeof(init_cb_t);
1412         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1413         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1414         ha->optrom_size = OPTROM_SIZE_2300;
1415
1416         /* Assign ISP specific operations. */
1417         ha->isp_ops.pci_config          = qla2100_pci_config;
1418         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1419         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1420         ha->isp_ops.config_rings        = qla2x00_config_rings;
1421         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1422         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1423         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1424         ha->isp_ops.load_risc           = qla2x00_load_risc;
1425         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1426         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1427         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1428         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1429         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1430         ha->isp_ops.abort_command       = qla2x00_abort_command;
1431         ha->isp_ops.abort_target        = qla2x00_abort_target;
1432         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1433         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1434         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1435         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1436         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1437         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1438         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1439         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1440         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1441         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1442         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1443         if (IS_QLA2100(ha)) {
1444                 host->max_id = MAX_TARGETS_2100;
1445                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1446                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1447                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1448                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1449                 host->sg_tablesize = 32;
1450                 ha->gid_list_info_size = 4;
1451         } else if (IS_QLA2200(ha)) {
1452                 host->max_id = MAX_TARGETS_2200;
1453                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1454                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1455                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1456                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1457                 ha->gid_list_info_size = 4;
1458         } else if (IS_QLA23XX(ha)) {
1459                 host->max_id = MAX_TARGETS_2200;
1460                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1461                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1462                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1463                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1464                 ha->isp_ops.pci_config = qla2300_pci_config;
1465                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1466                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1467                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1468                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1469                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1470                 ha->gid_list_info_size = 6;
1471                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1472                         ha->optrom_size = OPTROM_SIZE_2322;
1473         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1474                 host->max_id = MAX_TARGETS_2200;
1475                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1476                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1477                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1478                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1479                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1480                 ha->mgmt_svr_loop_id = 10;
1481                 ha->isp_ops.pci_config = qla24xx_pci_config;
1482                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1483                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1484                 ha->isp_ops.config_rings = qla24xx_config_rings;
1485                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1486                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1487                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1488                 ha->isp_ops.load_risc = qla24xx_load_risc;
1489                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1490                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1491                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1492                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1493                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1494                 ha->isp_ops.abort_command = qla24xx_abort_command;
1495                 ha->isp_ops.abort_target = qla24xx_abort_target;
1496                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1497                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1498                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1499                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1500                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1501                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1502                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1503                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1504                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1505                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1506                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1507                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1508                 ha->gid_list_info_size = 8;
1509                 ha->optrom_size = OPTROM_SIZE_24XX;
1510         }
1511         host->can_queue = ha->request_q_length + 128;
1512
1513         /* load the F/W, read paramaters, and init the H/W */
1514         ha->instance = num_hosts;
1515
1516         init_MUTEX(&ha->mbx_cmd_sem);
1517         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1518
1519         INIT_LIST_HEAD(&ha->list);
1520         INIT_LIST_HEAD(&ha->fcports);
1521
1522         /*
1523          * These locks are used to prevent more than one CPU
1524          * from modifying the queue at the same time. The
1525          * higher level "host_lock" will reduce most
1526          * contention for these locks.
1527          */
1528         spin_lock_init(&ha->mbx_reg_lock);
1529
1530         qla2x00_config_dma_addressing(ha);
1531         if (qla2x00_mem_alloc(ha)) {
1532                 qla_printk(KERN_WARNING, ha,
1533                     "[ERROR] Failed to allocate memory for adapter\n");
1534
1535                 ret = -ENOMEM;
1536                 goto probe_failed;
1537         }
1538
1539         if (qla2x00_initialize_adapter(ha) &&
1540             !(ha->device_flags & DFLG_NO_CABLE)) {
1541
1542                 qla_printk(KERN_WARNING, ha,
1543                     "Failed to initialize adapter\n");
1544
1545                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1546                     "Adapter flags %x.\n",
1547                     ha->host_no, ha->device_flags));
1548
1549                 ret = -ENODEV;
1550                 goto probe_failed;
1551         }
1552
1553         /*
1554          * Startup the kernel thread for this host adapter
1555          */
1556         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1557                         "%s_dpc", ha->host_str);
1558         if (IS_ERR(ha->dpc_thread)) {
1559                 qla_printk(KERN_WARNING, ha,
1560                     "Unable to start DPC thread!\n");
1561                 ret = PTR_ERR(ha->dpc_thread);
1562                 goto probe_failed;
1563         }
1564
1565         host->this_id = 255;
1566         host->cmd_per_lun = 3;
1567         host->unique_id = ha->instance;
1568         host->max_cmd_len = MAX_CMDSZ;
1569         host->max_channel = MAX_BUSES - 1;
1570         host->max_lun = MAX_LUNS;
1571         host->transportt = qla2xxx_transport_template;
1572
1573         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1574             IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1575         if (ret) {
1576                 qla_printk(KERN_WARNING, ha,
1577                     "Failed to reserve interrupt %d already in use.\n",
1578                     pdev->irq);
1579                 goto probe_failed;
1580         }
1581         host->irq = pdev->irq;
1582
1583         /* Initialized the timer */
1584         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1585
1586         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1587             ha->host_no, ha));
1588
1589         ha->isp_ops.disable_intrs(ha);
1590
1591         spin_lock_irqsave(&ha->hardware_lock, flags);
1592         reg = ha->iobase;
1593         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1594                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1595                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1596         } else {
1597                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1598                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1599                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1600
1601                 /* Enable proper parity */
1602                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1603                         if (IS_QLA2300(ha))
1604                                 /* SRAM parity */
1605                                 WRT_REG_WORD(&reg->isp.hccr,
1606                                     (HCCR_ENABLE_PARITY + 0x1));
1607                         else
1608                                 /* SRAM, Instruction RAM and GP RAM parity */
1609                                 WRT_REG_WORD(&reg->isp.hccr,
1610                                     (HCCR_ENABLE_PARITY + 0x7));
1611                 }
1612         }
1613         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1614
1615         ha->isp_ops.enable_intrs(ha);
1616
1617         /* v2.19.5b6 */
1618         /*
1619          * Wait around max loop_reset_delay secs for the devices to come
1620          * on-line. We don't want Linux scanning before we are ready.
1621          *
1622          */
1623         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1624             time_before(jiffies,wait_switch) &&
1625              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1626              && (ha->device_flags & SWITCH_FOUND) ;) {
1627
1628                 qla2x00_check_fabric_devices(ha);
1629
1630                 msleep(10);
1631         }
1632
1633         pci_set_drvdata(pdev, ha);
1634         ha->flags.init_done = 1;
1635         num_hosts++;
1636
1637         ret = scsi_add_host(host, &pdev->dev);
1638         if (ret)
1639                 goto probe_failed;
1640
1641         qla2x00_alloc_sysfs_attr(ha);
1642
1643         qla2x00_init_host_attr(ha);
1644
1645         qla_printk(KERN_INFO, ha, "\n"
1646             " QLogic Fibre Channel HBA Driver: %s\n"
1647             "  QLogic %s - %s\n"
1648             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1649             qla2x00_version_str, ha->model_number,
1650             ha->model_desc ? ha->model_desc: "", pdev->device,
1651             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1652             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1653             ha->isp_ops.fw_version_str(ha, fw_str));
1654
1655         /* Go with fc_rport registration. */
1656         list_for_each_entry(fcport, &ha->fcports, list)
1657                 qla2x00_reg_remote_port(ha, fcport);
1658
1659         return 0;
1660
1661 probe_failed:
1662         qla2x00_free_device(ha);
1663
1664         scsi_host_put(host);
1665
1666 probe_disable_device:
1667         pci_disable_device(pdev);
1668
1669 probe_out:
1670         return ret;
1671 }
1672
1673 static void __devexit
1674 qla2x00_remove_one(struct pci_dev *pdev)
1675 {
1676         scsi_qla_host_t *ha;
1677
1678         ha = pci_get_drvdata(pdev);
1679
1680         qla2x00_free_sysfs_attr(ha);
1681
1682         fc_remove_host(ha->host);
1683
1684         scsi_remove_host(ha->host);
1685
1686         qla2x00_free_device(ha);
1687
1688         scsi_host_put(ha->host);
1689
1690         pci_set_drvdata(pdev, NULL);
1691 }
1692
1693 static void
1694 qla2x00_free_device(scsi_qla_host_t *ha)
1695 {
1696         /* Disable timer */
1697         if (ha->timer_active)
1698                 qla2x00_stop_timer(ha);
1699
1700         /* Kill the kernel thread for this host */
1701         if (ha->dpc_thread) {
1702                 struct task_struct *t = ha->dpc_thread;
1703
1704                 /*
1705                  * qla2xxx_wake_dpc checks for ->dpc_thread
1706                  * so we need to zero it out.
1707                  */
1708                 ha->dpc_thread = NULL;
1709                 kthread_stop(t);
1710         }
1711
1712         if (ha->eft)
1713                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1714
1715         /* Stop currently executing firmware. */
1716         qla2x00_stop_firmware(ha);
1717
1718         /* turn-off interrupts on the card */
1719         if (ha->interrupts_on)
1720                 ha->isp_ops.disable_intrs(ha);
1721
1722         qla2x00_mem_free(ha);
1723
1724         ha->flags.online = 0;
1725
1726         /* Detach interrupts */
1727         if (ha->host->irq)
1728                 free_irq(ha->host->irq, ha);
1729
1730         /* release io space registers  */
1731         if (ha->iobase)
1732                 iounmap(ha->iobase);
1733         pci_release_regions(ha->pdev);
1734
1735         pci_disable_device(ha->pdev);
1736 }
1737
1738 static inline void
1739 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1740     int defer)
1741 {
1742         unsigned long flags;
1743         struct fc_rport *rport;
1744
1745         if (!fcport->rport)
1746                 return;
1747
1748         rport = fcport->rport;
1749         if (defer) {
1750                 spin_lock_irqsave(&fcport->rport_lock, flags);
1751                 fcport->drport = rport;
1752                 fcport->rport = NULL;
1753                 *(fc_port_t **)rport->dd_data = NULL;
1754                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1755                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1756         } else {
1757                 spin_lock_irqsave(&fcport->rport_lock, flags);
1758                 fcport->rport = NULL;
1759                 *(fc_port_t **)rport->dd_data = NULL;
1760                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1761                 fc_remote_port_delete(rport);
1762         }
1763 }
1764
1765 /*
1766  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1767  *
1768  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1769  *
1770  * Return: None.
1771  *
1772  * Context:
1773  */
1774 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1775     int do_login, int defer)
1776 {
1777         if (atomic_read(&fcport->state) == FCS_ONLINE)
1778                 qla2x00_schedule_rport_del(ha, fcport, defer);
1779
1780         /*
1781          * We may need to retry the login, so don't change the state of the
1782          * port but do the retries.
1783          */
1784         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1785                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1786
1787         if (!do_login)
1788                 return;
1789
1790         if (fcport->login_retry == 0) {
1791                 fcport->login_retry = ha->login_retry_count;
1792                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1793
1794                 DEBUG(printk("scsi(%ld): Port login retry: "
1795                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1796                     "id = 0x%04x retry cnt=%d\n",
1797                     ha->host_no,
1798                     fcport->port_name[0],
1799                     fcport->port_name[1],
1800                     fcport->port_name[2],
1801                     fcport->port_name[3],
1802                     fcport->port_name[4],
1803                     fcport->port_name[5],
1804                     fcport->port_name[6],
1805                     fcport->port_name[7],
1806                     fcport->loop_id,
1807                     fcport->login_retry));
1808         }
1809 }
1810
1811 /*
1812  * qla2x00_mark_all_devices_lost
1813  *      Updates fcport state when device goes offline.
1814  *
1815  * Input:
1816  *      ha = adapter block pointer.
1817  *      fcport = port structure pointer.
1818  *
1819  * Return:
1820  *      None.
1821  *
1822  * Context:
1823  */
1824 void
1825 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1826 {
1827         fc_port_t *fcport;
1828
1829         list_for_each_entry(fcport, &ha->fcports, list) {
1830                 if (fcport->port_type != FCT_TARGET)
1831                         continue;
1832
1833                 /*
1834                  * No point in marking the device as lost, if the device is
1835                  * already DEAD.
1836                  */
1837                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1838                         continue;
1839                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1840                         qla2x00_schedule_rport_del(ha, fcport, defer);
1841                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1842         }
1843
1844         if (defer)
1845                 qla2xxx_wake_dpc(ha);
1846 }
1847
1848 /*
1849 * qla2x00_mem_alloc
1850 *      Allocates adapter memory.
1851 *
1852 * Returns:
1853 *      0  = success.
1854 *      1  = failure.
1855 */
1856 static uint8_t
1857 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1858 {
1859         char    name[16];
1860         uint8_t   status = 1;
1861         int     retry= 10;
1862
1863         do {
1864                 /*
1865                  * This will loop only once if everything goes well, else some
1866                  * number of retries will be performed to get around a kernel
1867                  * bug where available mem is not allocated until after a
1868                  * little delay and a retry.
1869                  */
1870                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1871                     (ha->request_q_length + 1) * sizeof(request_t),
1872                     &ha->request_dma, GFP_KERNEL);
1873                 if (ha->request_ring == NULL) {
1874                         qla_printk(KERN_WARNING, ha,
1875                             "Memory Allocation failed - request_ring\n");
1876
1877                         qla2x00_mem_free(ha);
1878                         msleep(100);
1879
1880                         continue;
1881                 }
1882
1883                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1884                     (ha->response_q_length + 1) * sizeof(response_t),
1885                     &ha->response_dma, GFP_KERNEL);
1886                 if (ha->response_ring == NULL) {
1887                         qla_printk(KERN_WARNING, ha,
1888                             "Memory Allocation failed - response_ring\n");
1889
1890                         qla2x00_mem_free(ha);
1891                         msleep(100);
1892
1893                         continue;
1894                 }
1895
1896                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1897                     &ha->gid_list_dma, GFP_KERNEL);
1898                 if (ha->gid_list == NULL) {
1899                         qla_printk(KERN_WARNING, ha,
1900                             "Memory Allocation failed - gid_list\n");
1901
1902                         qla2x00_mem_free(ha);
1903                         msleep(100);
1904
1905                         continue;
1906                 }
1907
1908                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1909                     ha->host_no);
1910                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1911                     DMA_POOL_SIZE, 8, 0);
1912                 if (ha->s_dma_pool == NULL) {
1913                         qla_printk(KERN_WARNING, ha,
1914                             "Memory Allocation failed - s_dma_pool\n");
1915
1916                         qla2x00_mem_free(ha);
1917                         msleep(100);
1918
1919                         continue;
1920                 }
1921
1922                 /* get consistent memory allocated for init control block */
1923                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1924                     &ha->init_cb_dma);
1925                 if (ha->init_cb == NULL) {
1926                         qla_printk(KERN_WARNING, ha,
1927                             "Memory Allocation failed - init_cb\n");
1928
1929                         qla2x00_mem_free(ha);
1930                         msleep(100);
1931
1932                         continue;
1933                 }
1934                 memset(ha->init_cb, 0, ha->init_cb_size);
1935
1936                 if (qla2x00_allocate_sp_pool(ha)) {
1937                         qla_printk(KERN_WARNING, ha,
1938                             "Memory Allocation failed - "
1939                             "qla2x00_allocate_sp_pool()\n");
1940
1941                         qla2x00_mem_free(ha);
1942                         msleep(100);
1943
1944                         continue;
1945                 }
1946
1947                 /* Allocate memory for SNS commands */
1948                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1949                         /* Get consistent memory allocated for SNS commands */
1950                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1951                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1952                             GFP_KERNEL);
1953                         if (ha->sns_cmd == NULL) {
1954                                 /* error */
1955                                 qla_printk(KERN_WARNING, ha,
1956                                     "Memory Allocation failed - sns_cmd\n");
1957
1958                                 qla2x00_mem_free(ha);
1959                                 msleep(100);
1960
1961                                 continue;
1962                         }
1963                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1964                 } else {
1965                         /* Get consistent memory allocated for MS IOCB */
1966                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1967                             &ha->ms_iocb_dma);
1968                         if (ha->ms_iocb == NULL) {
1969                                 /* error */
1970                                 qla_printk(KERN_WARNING, ha,
1971                                     "Memory Allocation failed - ms_iocb\n");
1972
1973                                 qla2x00_mem_free(ha);
1974                                 msleep(100);
1975
1976                                 continue;
1977                         }
1978                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1979
1980                         /*
1981                          * Get consistent memory allocated for CT SNS
1982                          * commands
1983                          */
1984                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1985                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1986                             GFP_KERNEL);
1987                         if (ha->ct_sns == NULL) {
1988                                 /* error */
1989                                 qla_printk(KERN_WARNING, ha,
1990                                     "Memory Allocation failed - ct_sns\n");
1991
1992                                 qla2x00_mem_free(ha);
1993                                 msleep(100);
1994
1995                                 continue;
1996                         }
1997                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1998
1999                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2000                                 /*
2001                                  * Get consistent memory allocated for SFP
2002                                  * block.
2003                                  */
2004                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2005                                     GFP_KERNEL, &ha->sfp_data_dma);
2006                                 if (ha->sfp_data == NULL) {
2007                                         qla_printk(KERN_WARNING, ha,
2008                                             "Memory Allocation failed - "
2009                                             "sfp_data\n");
2010
2011                                         qla2x00_mem_free(ha);
2012                                         msleep(100);
2013
2014                                         continue;
2015                                 }
2016                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2017                         }
2018                 }
2019
2020                 /* Done all allocations without any error. */
2021                 status = 0;
2022
2023         } while (retry-- && status != 0);
2024
2025         if (status) {
2026                 printk(KERN_WARNING
2027                         "%s(): **** FAILED ****\n", __func__);
2028         }
2029
2030         return(status);
2031 }
2032
2033 /*
2034 * qla2x00_mem_free
2035 *      Frees all adapter allocated memory.
2036 *
2037 * Input:
2038 *      ha = adapter block pointer.
2039 */
2040 static void
2041 qla2x00_mem_free(scsi_qla_host_t *ha)
2042 {
2043         struct list_head        *fcpl, *fcptemp;
2044         fc_port_t       *fcport;
2045
2046         if (ha == NULL) {
2047                 /* error */
2048                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2049                 return;
2050         }
2051
2052         /* free sp pool */
2053         qla2x00_free_sp_pool(ha);
2054
2055         if (ha->fw_dump) {
2056                 if (ha->eft)
2057                         dma_free_coherent(&ha->pdev->dev,
2058                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2059                 vfree(ha->fw_dump);
2060         }
2061
2062         if (ha->sns_cmd)
2063                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2064                     ha->sns_cmd, ha->sns_cmd_dma);
2065
2066         if (ha->ct_sns)
2067                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2068                     ha->ct_sns, ha->ct_sns_dma);
2069
2070         if (ha->sfp_data)
2071                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2072
2073         if (ha->ms_iocb)
2074                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2075
2076         if (ha->init_cb)
2077                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2078
2079         if (ha->s_dma_pool)
2080                 dma_pool_destroy(ha->s_dma_pool);
2081
2082         if (ha->gid_list)
2083                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2084                     ha->gid_list_dma);
2085
2086         if (ha->response_ring)
2087                 dma_free_coherent(&ha->pdev->dev,
2088                     (ha->response_q_length + 1) * sizeof(response_t),
2089                     ha->response_ring, ha->response_dma);
2090
2091         if (ha->request_ring)
2092                 dma_free_coherent(&ha->pdev->dev,
2093                     (ha->request_q_length + 1) * sizeof(request_t),
2094                     ha->request_ring, ha->request_dma);
2095
2096         ha->eft = NULL;
2097         ha->eft_dma = 0;
2098         ha->sns_cmd = NULL;
2099         ha->sns_cmd_dma = 0;
2100         ha->ct_sns = NULL;
2101         ha->ct_sns_dma = 0;
2102         ha->ms_iocb = NULL;
2103         ha->ms_iocb_dma = 0;
2104         ha->init_cb = NULL;
2105         ha->init_cb_dma = 0;
2106
2107         ha->s_dma_pool = NULL;
2108
2109         ha->gid_list = NULL;
2110         ha->gid_list_dma = 0;
2111
2112         ha->response_ring = NULL;
2113         ha->response_dma = 0;
2114         ha->request_ring = NULL;
2115         ha->request_dma = 0;
2116
2117         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2118                 fcport = list_entry(fcpl, fc_port_t, list);
2119
2120                 /* fc ports */
2121                 list_del_init(&fcport->list);
2122                 kfree(fcport);
2123         }
2124         INIT_LIST_HEAD(&ha->fcports);
2125
2126         ha->fw_dump = NULL;
2127         ha->fw_dumped = 0;
2128         ha->fw_dump_reading = 0;
2129
2130         vfree(ha->optrom_buffer);
2131 }
2132
2133 /*
2134  * qla2x00_allocate_sp_pool
2135  *       This routine is called during initialization to allocate
2136  *       memory for local srb_t.
2137  *
2138  * Input:
2139  *       ha   = adapter block pointer.
2140  *
2141  * Context:
2142  *      Kernel context.
2143  */
2144 static int
2145 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2146 {
2147         int      rval;
2148
2149         rval = QLA_SUCCESS;
2150         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2151         if (ha->srb_mempool == NULL) {
2152                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2153                 rval = QLA_FUNCTION_FAILED;
2154         }
2155         return (rval);
2156 }
2157
2158 /*
2159  *  This routine frees all adapter allocated memory.
2160  *
2161  */
2162 static void
2163 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2164 {
2165         if (ha->srb_mempool) {
2166                 mempool_destroy(ha->srb_mempool);
2167                 ha->srb_mempool = NULL;
2168         }
2169 }
2170
2171 /**************************************************************************
2172 * qla2x00_do_dpc
2173 *   This kernel thread is a task that is schedule by the interrupt handler
2174 *   to perform the background processing for interrupts.
2175 *
2176 * Notes:
2177 * This task always run in the context of a kernel thread.  It
2178 * is kick-off by the driver's detect code and starts up
2179 * up one per adapter. It immediately goes to sleep and waits for
2180 * some fibre event.  When either the interrupt handler or
2181 * the timer routine detects a event it will one of the task
2182 * bits then wake us up.
2183 **************************************************************************/
2184 static int
2185 qla2x00_do_dpc(void *data)
2186 {
2187         scsi_qla_host_t *ha;
2188         fc_port_t       *fcport;
2189         uint8_t         status;
2190         uint16_t        next_loopid;
2191
2192         ha = (scsi_qla_host_t *)data;
2193
2194         set_user_nice(current, -20);
2195
2196         while (!kthread_should_stop()) {
2197                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2198
2199                 set_current_state(TASK_INTERRUPTIBLE);
2200                 schedule();
2201                 __set_current_state(TASK_RUNNING);
2202
2203                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2204
2205                 /* Initialization not yet finished. Don't do anything yet. */
2206                 if (!ha->flags.init_done)
2207                         continue;
2208
2209                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2210
2211                 ha->dpc_active = 1;
2212
2213                 if (ha->flags.mbox_busy) {
2214                         ha->dpc_active = 0;
2215                         continue;
2216                 }
2217
2218                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2219
2220                         DEBUG(printk("scsi(%ld): dpc: sched "
2221                             "qla2x00_abort_isp ha = %p\n",
2222                             ha->host_no, ha));
2223                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2224                             &ha->dpc_flags))) {
2225
2226                                 if (qla2x00_abort_isp(ha)) {
2227                                         /* failed. retry later */
2228                                         set_bit(ISP_ABORT_NEEDED,
2229                                             &ha->dpc_flags);
2230                                 }
2231                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2232                         }
2233                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2234                             ha->host_no));
2235                 }
2236
2237                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2238                         qla2x00_update_fcports(ha);
2239
2240                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2241                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2242                             ha->host_no));
2243                         qla2x00_loop_reset(ha);
2244                 }
2245
2246                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2247                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2248
2249                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2250                             ha->host_no));
2251
2252                         qla2x00_rst_aen(ha);
2253                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2254                 }
2255
2256                 /* Retry each device up to login retry count */
2257                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2258                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2259                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2260
2261                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2262                             ha->host_no));
2263
2264                         next_loopid = 0;
2265                         list_for_each_entry(fcport, &ha->fcports, list) {
2266                                 /*
2267                                  * If the port is not ONLINE then try to login
2268                                  * to it if we haven't run out of retries.
2269                                  */
2270                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2271                                     fcport->login_retry) {
2272
2273                                         fcport->login_retry--;
2274                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2275                                                 if (fcport->flags &
2276                                                     FCF_TAPE_PRESENT)
2277                                                         ha->isp_ops.fabric_logout(
2278                                                             ha, fcport->loop_id,
2279                                                             fcport->d_id.b.domain,
2280                                                             fcport->d_id.b.area,
2281                                                             fcport->d_id.b.al_pa);
2282                                                 status = qla2x00_fabric_login(
2283                                                     ha, fcport, &next_loopid);
2284                                         } else
2285                                                 status =
2286                                                     qla2x00_local_device_login(
2287                                                         ha, fcport);
2288
2289                                         if (status == QLA_SUCCESS) {
2290                                                 fcport->old_loop_id = fcport->loop_id;
2291
2292                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2293                                                     ha->host_no, fcport->loop_id));
2294
2295                                                 qla2x00_update_fcport(ha,
2296                                                     fcport);
2297                                         } else if (status == 1) {
2298                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2299                                                 /* retry the login again */
2300                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2301                                                     ha->host_no,
2302                                                     fcport->login_retry, fcport->loop_id));
2303                                         } else {
2304                                                 fcport->login_retry = 0;
2305                                         }
2306                                 }
2307                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2308                                         break;
2309                         }
2310                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2311                             ha->host_no));
2312                 }
2313
2314                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2315                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2316
2317                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2318                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2319                             ha->host_no));
2320
2321                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2322
2323                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2324                             ha->host_no));
2325                 }
2326
2327                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2328
2329                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2330                             ha->host_no));
2331
2332                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2333                             &ha->dpc_flags))) {
2334
2335                                 qla2x00_loop_resync(ha);
2336
2337                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2338                         }
2339
2340                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2341                             ha->host_no));
2342                 }
2343
2344                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2345
2346                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2347                             ha->host_no));
2348
2349                         qla2x00_rescan_fcports(ha);
2350
2351                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2352                             "end.\n",
2353                             ha->host_no));
2354                 }
2355
2356                 if (!ha->interrupts_on)
2357                         ha->isp_ops.enable_intrs(ha);
2358
2359                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2360                         ha->isp_ops.beacon_blink(ha);
2361
2362                 ha->dpc_active = 0;
2363         } /* End of while(1) */
2364
2365         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2366
2367         /*
2368          * Make sure that nobody tries to wake us up again.
2369          */
2370         ha->dpc_active = 0;
2371
2372         return 0;
2373 }
2374
2375 void
2376 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2377 {
2378         if (ha->dpc_thread)
2379                 wake_up_process(ha->dpc_thread);
2380 }
2381
2382 /*
2383 *  qla2x00_rst_aen
2384 *      Processes asynchronous reset.
2385 *
2386 * Input:
2387 *      ha  = adapter block pointer.
2388 */
2389 static void
2390 qla2x00_rst_aen(scsi_qla_host_t *ha)
2391 {
2392         if (ha->flags.online && !ha->flags.reset_active &&
2393             !atomic_read(&ha->loop_down_timer) &&
2394             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2395                 do {
2396                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2397
2398                         /*
2399                          * Issue marker command only when we are going to start
2400                          * the I/O.
2401                          */
2402                         ha->marker_needed = 1;
2403                 } while (!atomic_read(&ha->loop_down_timer) &&
2404                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2405         }
2406 }
2407
2408 static void
2409 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2410 {
2411         struct scsi_cmnd *cmd = sp->cmd;
2412
2413         if (sp->flags & SRB_DMA_VALID) {
2414                 if (cmd->use_sg) {
2415                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2416                             cmd->use_sg, cmd->sc_data_direction);
2417                 } else if (cmd->request_bufflen) {
2418                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2419                             cmd->request_bufflen, cmd->sc_data_direction);
2420                 }
2421                 sp->flags &= ~SRB_DMA_VALID;
2422         }
2423         CMD_SP(cmd) = NULL;
2424 }
2425
2426 void
2427 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2428 {
2429         struct scsi_cmnd *cmd = sp->cmd;
2430
2431         qla2x00_sp_free_dma(ha, sp);
2432
2433         mempool_free(sp, ha->srb_mempool);
2434
2435         cmd->scsi_done(cmd);
2436 }
2437
2438 /**************************************************************************
2439 *   qla2x00_timer
2440 *
2441 * Description:
2442 *   One second timer
2443 *
2444 * Context: Interrupt
2445 ***************************************************************************/
2446 static void
2447 qla2x00_timer(scsi_qla_host_t *ha)
2448 {
2449         unsigned long   cpu_flags = 0;
2450         fc_port_t       *fcport;
2451         int             start_dpc = 0;
2452         int             index;
2453         srb_t           *sp;
2454         int             t;
2455
2456         /*
2457          * Ports - Port down timer.
2458          *
2459          * Whenever, a port is in the LOST state we start decrementing its port
2460          * down timer every second until it reaches zero. Once  it reaches zero
2461          * the port it marked DEAD.
2462          */
2463         t = 0;
2464         list_for_each_entry(fcport, &ha->fcports, list) {
2465                 if (fcport->port_type != FCT_TARGET)
2466                         continue;
2467
2468                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2469
2470                         if (atomic_read(&fcport->port_down_timer) == 0)
2471                                 continue;
2472
2473                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2474                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2475
2476                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2477                             "%d remaining\n",
2478                             ha->host_no,
2479                             t, atomic_read(&fcport->port_down_timer)));
2480                 }
2481                 t++;
2482         } /* End of for fcport  */
2483
2484
2485         /* Loop down handler. */
2486         if (atomic_read(&ha->loop_down_timer) > 0 &&
2487             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2488
2489                 if (atomic_read(&ha->loop_down_timer) ==
2490                     ha->loop_down_abort_time) {
2491
2492                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2493                             "queues before time expire\n",
2494                             ha->host_no));
2495
2496                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2497                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2498
2499                         /* Schedule an ISP abort to return any tape commands. */
2500                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2501                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2502                             index++) {
2503                                 fc_port_t *sfcp;
2504
2505                                 sp = ha->outstanding_cmds[index];
2506                                 if (!sp)
2507                                         continue;
2508                                 sfcp = sp->fcport;
2509                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2510                                         continue;
2511
2512                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2513                                 break;
2514                         }
2515                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2516
2517                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2518                         start_dpc++;
2519                 }
2520
2521                 /* if the loop has been down for 4 minutes, reinit adapter */
2522                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2523                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2524                             "restarting queues.\n",
2525                             ha->host_no));
2526
2527                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2528                         start_dpc++;
2529
2530                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2531                                 DEBUG(printk("scsi(%ld): Loop down - "
2532                                     "aborting ISP.\n",
2533                                     ha->host_no));
2534                                 qla_printk(KERN_WARNING, ha,
2535                                     "Loop down - aborting ISP.\n");
2536
2537                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2538                         }
2539                 }
2540                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2541                     ha->host_no,
2542                     atomic_read(&ha->loop_down_timer)));
2543         }
2544
2545         /* Check if beacon LED needs to be blinked */
2546         if (ha->beacon_blink_led == 1) {
2547                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2548                 start_dpc++;
2549         }
2550
2551         /* Schedule the DPC routine if needed */
2552         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2553             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2554             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2555             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2556             start_dpc ||
2557             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2558             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2559             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2560             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2561                 qla2xxx_wake_dpc(ha);
2562
2563         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2564 }
2565
2566 /* XXX(hch): crude hack to emulate a down_timeout() */
2567 int
2568 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2569 {
2570         const unsigned int step = 100; /* msecs */
2571         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2572
2573         do {
2574                 if (!down_trylock(sema))
2575                         return 0;
2576                 if (msleep_interruptible(step))
2577                         break;
2578         } while (--iterations >= 0);
2579
2580         return -ETIMEDOUT;
2581 }
2582
2583 /* Firmware interface routines. */
2584
2585 #define FW_BLOBS        5
2586 #define FW_ISP21XX      0
2587 #define FW_ISP22XX      1
2588 #define FW_ISP2300      2
2589 #define FW_ISP2322      3
2590 #define FW_ISP24XX      4
2591
2592 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2593 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2594 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2595 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2596 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2597
2598 static DECLARE_MUTEX(qla_fw_lock);
2599
2600 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2601         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2602         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2603         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2604         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2605         { .name = FW_FILE_ISP24XX, },
2606 };
2607
2608 struct fw_blob *
2609 qla2x00_request_firmware(scsi_qla_host_t *ha)
2610 {
2611         struct fw_blob *blob;
2612
2613         blob = NULL;
2614         if (IS_QLA2100(ha)) {
2615                 blob = &qla_fw_blobs[FW_ISP21XX];
2616         } else if (IS_QLA2200(ha)) {
2617                 blob = &qla_fw_blobs[FW_ISP22XX];
2618         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2619                 blob = &qla_fw_blobs[FW_ISP2300];
2620         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2621                 blob = &qla_fw_blobs[FW_ISP2322];
2622         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2623                 blob = &qla_fw_blobs[FW_ISP24XX];
2624         }
2625
2626         down(&qla_fw_lock);
2627         if (blob->fw)
2628                 goto out;
2629
2630         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2631                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2632                     "(%s).\n", ha->host_no, blob->name));
2633                 blob->fw = NULL;
2634                 blob = NULL;
2635                 goto out;
2636         }
2637
2638 out:
2639         up(&qla_fw_lock);
2640         return blob;
2641 }
2642
2643 static void
2644 qla2x00_release_firmware(void)
2645 {
2646         int idx;
2647
2648         down(&qla_fw_lock);
2649         for (idx = 0; idx < FW_BLOBS; idx++)
2650                 if (qla_fw_blobs[idx].fw)
2651                         release_firmware(qla_fw_blobs[idx].fw);
2652         up(&qla_fw_lock);
2653 }
2654
2655 static struct pci_device_id qla2xxx_pci_tbl[] = {
2656         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2657         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2658         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2659         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2660         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2661         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2662         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2663         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2664         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2665         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2666         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2667         { 0 },
2668 };
2669 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2670
2671 static struct pci_driver qla2xxx_pci_driver = {
2672         .name           = QLA2XXX_DRIVER_NAME,
2673         .driver         = {
2674                 .owner          = THIS_MODULE,
2675         },
2676         .id_table       = qla2xxx_pci_tbl,
2677         .probe          = qla2x00_probe_one,
2678         .remove         = __devexit_p(qla2x00_remove_one),
2679 };
2680
2681 /**
2682  * qla2x00_module_init - Module initialization.
2683  **/
2684 static int __init
2685 qla2x00_module_init(void)
2686 {
2687         int ret = 0;
2688
2689         /* Allocate cache for SRBs. */
2690         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2691             SLAB_HWCACHE_ALIGN, NULL, NULL);
2692         if (srb_cachep == NULL) {
2693                 printk(KERN_ERR
2694                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2695                 return -ENOMEM;
2696         }
2697
2698         /* Derive version string. */
2699         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2700         if (qla2_extended_error_logging)
2701                 strcat(qla2x00_version_str, "-debug");
2702
2703         qla2xxx_transport_template =
2704             fc_attach_transport(&qla2xxx_transport_functions);
2705         if (!qla2xxx_transport_template)
2706                 return -ENODEV;
2707
2708         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2709         ret = pci_register_driver(&qla2xxx_pci_driver);
2710         if (ret) {
2711                 kmem_cache_destroy(srb_cachep);
2712                 fc_release_transport(qla2xxx_transport_template);
2713         }
2714         return ret;
2715 }
2716
2717 /**
2718  * qla2x00_module_exit - Module cleanup.
2719  **/
2720 static void __exit
2721 qla2x00_module_exit(void)
2722 {
2723         pci_unregister_driver(&qla2xxx_pci_driver);
2724         qla2x00_release_firmware();
2725         kmem_cache_destroy(srb_cachep);
2726         fc_release_transport(qla2xxx_transport_template);
2727 }
2728
2729 module_init(qla2x00_module_init);
2730 module_exit(qla2x00_module_exit);
2731
2732 MODULE_AUTHOR("QLogic Corporation");
2733 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2734 MODULE_LICENSE("GPL");
2735 MODULE_VERSION(QLA2XXX_VERSION);
2736 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2737 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2738 MODULE_FIRMWARE(FW_FILE_ISP2300);
2739 MODULE_FIRMWARE(FW_FILE_ISP2322);
2740 MODULE_FIRMWARE(FW_FILE_ISP24XX);