git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static struct kmem_cache *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 ql2xextended_error_logging;
  65 module_param(ql2xextended_error_logging, int, S_IRUGO|S_IRUSR);
  66 MODULE_PARM_DESC(ql2xextended_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 #define MAX_Q_DEPTH    32
  81 static int ql2xmaxqdepth = MAX_Q_DEPTH;
  82 module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  83 MODULE_PARM_DESC(ql2xmaxqdepth,
  84                 "Maximum queue depth to report for target devices.");
  85
  86 int ql2xqfullrampup = 120;
  87 module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  88 MODULE_PARM_DESC(ql2xqfullrampup,
  89                 "Number of seconds to wait to begin to ramp-up the queue "
  90                 "depth for a device after a queue-full condition has been "
  91                 "detected.  Default is 120 seconds.");
  92
  93 /*
  94  * SCSI host template entry points
  95  */
  96 static int qla2xxx_slave_configure(struct scsi_device * device);
  97 static int qla2xxx_slave_alloc(struct scsi_device *);
  98 static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
  99 static void qla2xxx_scan_start(struct Scsi_Host *);
 100 static void qla2xxx_slave_destroy(struct scsi_device *);
 101 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 102                 void (*fn)(struct scsi_cmnd *));
 103 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 104                 void (*fn)(struct scsi_cmnd *));
 105 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 106 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 107 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 108 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 109 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
 110 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 111
 112 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 113 static int qla2x00_change_queue_type(struct scsi_device *, int);
 114
 115 static struct scsi_host_template qla2x00_driver_template = {
 116         .module                 = THIS_MODULE,
 117         .name                   = QLA2XXX_DRIVER_NAME,
 118         .queuecommand           = qla2x00_queuecommand,
 119
 120         .eh_abort_handler       = qla2xxx_eh_abort,
 121         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 122         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 123         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 124
 125         .slave_configure        = qla2xxx_slave_configure,
 126
 127         .slave_alloc            = qla2xxx_slave_alloc,
 128         .slave_destroy          = qla2xxx_slave_destroy,
 129         .scan_finished          = qla2xxx_scan_finished,
 130         .scan_start             = qla2xxx_scan_start,
 131         .change_queue_depth     = qla2x00_change_queue_depth,
 132         .change_queue_type      = qla2x00_change_queue_type,
 133         .this_id                = -1,
 134         .cmd_per_lun            = 3,
 135         .use_clustering         = ENABLE_CLUSTERING,
 136         .sg_tablesize           = SG_ALL,
 137
 138         /*
 139          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 140          * which equates to 0x800000 sectors.
 141          */
 142         .max_sectors            = 0xFFFF,
 143         .shost_attrs            = qla2x00_host_attrs,
 144 };
 145
 146 static struct scsi_host_template qla24xx_driver_template = {
 147         .module                 = THIS_MODULE,
 148         .name                   = QLA2XXX_DRIVER_NAME,
 149         .queuecommand           = qla24xx_queuecommand,
 150
 151         .eh_abort_handler       = qla2xxx_eh_abort,
 152         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 153         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 154         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 155
 156         .slave_configure        = qla2xxx_slave_configure,
 157
 158         .slave_alloc            = qla2xxx_slave_alloc,
 159         .slave_destroy          = qla2xxx_slave_destroy,
 160         .change_queue_depth     = qla2x00_change_queue_depth,
 161         .change_queue_type      = qla2x00_change_queue_type,
 162         .this_id                = -1,
 163         .cmd_per_lun            = 3,
 164         .use_clustering         = ENABLE_CLUSTERING,
 165         .sg_tablesize           = SG_ALL,
 166
 167         .max_sectors            = 0xFFFF,
 168         .shost_attrs            = qla2x00_host_attrs,
 169 };
 170
 171 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 172
 173 /* TODO Convert to inlines
 174  *
 175  * Timer routines
 176  */
 177 #define WATCH_INTERVAL          1       /* number of seconds */
 178
 179 static void qla2x00_timer(scsi_qla_host_t *);
 180
 181 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 182     void *, unsigned long);
 183 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 184 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 185
 186 static inline void
 187 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 188 {
 189         init_timer(&ha->timer);
 190         ha->timer.expires = jiffies + interval * HZ;
 191         ha->timer.data = (unsigned long)ha;
 192         ha->timer.function = (void (*)(unsigned long))func;
 193         add_timer(&ha->timer);
 194         ha->timer_active = 1;
 195 }
 196
 197 static inline void
 198 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 199 {
 200         mod_timer(&ha->timer, jiffies + interval * HZ);
 201 }
 202
 203 static __inline__ void
 204 qla2x00_stop_timer(scsi_qla_host_t *ha)
 205 {
 206         del_timer_sync(&ha->timer);
 207         ha->timer_active = 0;
 208 }
 209
 210 static int qla2x00_do_dpc(void *data);
 211
 212 static void qla2x00_rst_aen(scsi_qla_host_t *);
 213
 214 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 215 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 216 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 217 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 218 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 219 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 220
 221 /* -------------------------------------------------------------------------- */
 222
 223 static char *
 224 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 225 {
 226         static char *pci_bus_modes[] = {
 227                 "33", "66", "100", "133",
 228         };
 229         uint16_t pci_bus;
 230
 231         strcpy(str, "PCI");
 232         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 233         if (pci_bus) {
 234                 strcat(str, "-X (");
 235                 strcat(str, pci_bus_modes[pci_bus]);
 236         } else {
 237                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 238                 strcat(str, " (");
 239                 strcat(str, pci_bus_modes[pci_bus]);
 240         }
 241         strcat(str, " MHz)");
 242
 243         return (str);
 244 }
 245
 246 static char *
 247 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 248 {
 249         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 250         uint32_t pci_bus;
 251         int pcie_reg;
 252
 253         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 254         if (pcie_reg) {
 255                 char lwstr[6];
 256                 uint16_t pcie_lstat, lspeed, lwidth;
 257
 258                 pcie_reg += 0x12;
 259                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 260                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 261                 lwidth = (pcie_lstat &
 262                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 263
 264                 strcpy(str, "PCIe (");
 265                 if (lspeed == 1)
 266                         strcat(str, "2.5Gb/s ");
 267                 else
 268                         strcat(str, "<unknown> ");
 269                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 270                 strcat(str, lwstr);
 271
 272                 return str;
 273         }
 274
 275         strcpy(str, "PCI");
 276         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 277         if (pci_bus == 0 || pci_bus == 8) {
 278                 strcat(str, " (");
 279                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 280         } else {
 281                 strcat(str, "-X ");
 282                 if (pci_bus & BIT_2)
 283                         strcat(str, "Mode 2");
 284                 else
 285                         strcat(str, "Mode 1");
 286                 strcat(str, " (");
 287                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 288         }
 289         strcat(str, " MHz)");
 290
 291         return str;
 292 }
 293
 294 static char *
 295 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 296 {
 297         char un_str[10];
 298
 299         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 300             ha->fw_minor_version,
 301             ha->fw_subminor_version);
 302
 303         if (ha->fw_attributes & BIT_9) {
 304                 strcat(str, "FLX");
 305                 return (str);
 306         }
 307
 308         switch (ha->fw_attributes & 0xFF) {
 309         case 0x7:
 310                 strcat(str, "EF");
 311                 break;
 312         case 0x17:
 313                 strcat(str, "TP");
 314                 break;
 315         case 0x37:
 316                 strcat(str, "IP");
 317                 break;
 318         case 0x77:
 319                 strcat(str, "VI");
 320                 break;
 321         default:
 322                 sprintf(un_str, "(%x)", ha->fw_attributes);
 323                 strcat(str, un_str);
 324                 break;
 325         }
 326         if (ha->fw_attributes & 0x100)
 327                 strcat(str, "X");
 328
 329         return (str);
 330 }
 331
 332 static char *
 333 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 334 {
 335         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 336             ha->fw_minor_version,
 337             ha->fw_subminor_version);
 338
 339         if (ha->fw_attributes & BIT_0)
 340                 strcat(str, "[Class 2] ");
 341         if (ha->fw_attributes & BIT_1)
 342                 strcat(str, "[IP] ");
 343         if (ha->fw_attributes & BIT_2)
 344                 strcat(str, "[Multi-ID] ");
 345         if (ha->fw_attributes & BIT_13)
 346                 strcat(str, "[Experimental]");
 347         return str;
 348 }
 349
 350 static inline srb_t *
 351 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 352     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 353 {
 354         srb_t *sp;
 355
 356         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 357         if (!sp)
 358                 return sp;
 359
 360         sp->ha = ha;
 361         sp->fcport = fcport;
 362         sp->cmd = cmd;
 363         sp->flags = 0;
 364         CMD_SP(cmd) = (void *)sp;
 365         cmd->scsi_done = done;
 366
 367         return sp;
 368 }
 369
 370 static int
 371 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 372 {
 373         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 374         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 375         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 376         srb_t *sp;
 377         int rval;
 378
 379         rval = fc_remote_port_chkready(rport);
 380         if (rval) {
 381                 cmd->result = rval;
 382                 goto qc_fail_command;
 383         }
 384
 385         /* Close window on fcport/rport state-transitioning. */
 386         if (!*(fc_port_t **)rport->dd_data) {
 387                 cmd->result = DID_IMM_RETRY << 16;
 388                 goto qc_fail_command;
 389         }
 390
 391         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 392                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 393                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 394                         cmd->result = DID_NO_CONNECT << 16;
 395                         goto qc_fail_command;
 396                 }
 397                 goto qc_host_busy;
 398         }
 399
 400         spin_unlock_irq(ha->host->host_lock);
 401
 402         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 403         if (!sp)
 404                 goto qc_host_busy_lock;
 405
 406         rval = qla2x00_start_scsi(sp);
 407         if (rval != QLA_SUCCESS)
 408                 goto qc_host_busy_free_sp;
 409
 410         spin_lock_irq(ha->host->host_lock);
 411
 412         return 0;
 413
 414 qc_host_busy_free_sp:
 415         qla2x00_sp_free_dma(ha, sp);
 416         mempool_free(sp, ha->srb_mempool);
 417
 418 qc_host_busy_lock:
 419         spin_lock_irq(ha->host->host_lock);
 420
 421 qc_host_busy:
 422         return SCSI_MLQUEUE_HOST_BUSY;
 423
 424 qc_fail_command:
 425         done(cmd);
 426
 427         return 0;
 428 }
 429
 430
 431 static int
 432 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 433 {
 434         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 435         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 436         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 437         srb_t *sp;
 438         int rval;
 439
 440         rval = fc_remote_port_chkready(rport);
 441         if (rval) {
 442                 cmd->result = rval;
 443                 goto qc24_fail_command;
 444         }
 445
 446         /* Close window on fcport/rport state-transitioning. */
 447         if (!*(fc_port_t **)rport->dd_data) {
 448                 cmd->result = DID_IMM_RETRY << 16;
 449                 goto qc24_fail_command;
 450         }
 451
 452         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 453                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 454                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 455                         cmd->result = DID_NO_CONNECT << 16;
 456                         goto qc24_fail_command;
 457                 }
 458                 goto qc24_host_busy;
 459         }
 460
 461         spin_unlock_irq(ha->host->host_lock);
 462
 463         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 464         if (!sp)
 465                 goto qc24_host_busy_lock;
 466
 467         rval = qla24xx_start_scsi(sp);
 468         if (rval != QLA_SUCCESS)
 469                 goto qc24_host_busy_free_sp;
 470
 471         spin_lock_irq(ha->host->host_lock);
 472
 473         return 0;
 474
 475 qc24_host_busy_free_sp:
 476         qla2x00_sp_free_dma(ha, sp);
 477         mempool_free(sp, ha->srb_mempool);
 478
 479 qc24_host_busy_lock:
 480         spin_lock_irq(ha->host->host_lock);
 481
 482 qc24_host_busy:
 483         return SCSI_MLQUEUE_HOST_BUSY;
 484
 485 qc24_fail_command:
 486         done(cmd);
 487
 488         return 0;
 489 }
 490
 491
 492 /*
 493  * qla2x00_eh_wait_on_command
 494  *    Waits for the command to be returned by the Firmware for some
 495  *    max time.
 496  *
 497  * Input:
 498  *    ha = actual ha whose done queue will contain the command
 499  *            returned by firmware.
 500  *    cmd = Scsi Command to wait on.
 501  *    flag = Abort/Reset(Bus or Device Reset)
 502  *
 503  * Return:
 504  *    Not Found : 0
 505  *    Found : 1
 506  */
 507 static int
 508 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 509 {
 510 #define ABORT_POLLING_PERIOD    1000
 511 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 512         unsigned long wait_iter = ABORT_WAIT_ITER;
 513         int ret = QLA_SUCCESS;
 514
 515         while (CMD_SP(cmd)) {
 516                 msleep(ABORT_POLLING_PERIOD);
 517
 518                 if (--wait_iter)
 519                         break;
 520         }
 521         if (CMD_SP(cmd))
 522                 ret = QLA_FUNCTION_FAILED;
 523
 524         return ret;
 525 }
 526
 527 /*
 528  * qla2x00_wait_for_hba_online
 529  *    Wait till the HBA is online after going through
 530  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 531  *    finally HBA is disabled ie marked offline
 532  *
 533  * Input:
 534  *     ha - pointer to host adapter structure
 535  *
 536  * Note:
 537  *    Does context switching-Release SPIN_LOCK
 538  *    (if any) before calling this routine.
 539  *
 540  * Return:
 541  *    Success (Adapter is online) : 0
 542  *    Failed  (Adapter is offline/disabled) : 1
 543  */
 544 int
 545 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 546 {
 547         int             return_status;
 548         unsigned long   wait_online;
 549
 550         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 551         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 552             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 553             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 554             ha->dpc_active) && time_before(jiffies, wait_online)) {
 555
 556                 msleep(1000);
 557         }
 558         if (ha->flags.online)
 559                 return_status = QLA_SUCCESS;
 560         else
 561                 return_status = QLA_FUNCTION_FAILED;
 562
 563         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 564
 565         return (return_status);
 566 }
 567
 568 /*
 569  * qla2x00_wait_for_loop_ready
 570  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 571  *    to be in LOOP_READY state.
 572  * Input:
 573  *     ha - pointer to host adapter structure
 574  *
 575  * Note:
 576  *    Does context switching-Release SPIN_LOCK
 577  *    (if any) before calling this routine.
 578  *
 579  *
 580  * Return:
 581  *    Success (LOOP_READY) : 0
 582  *    Failed  (LOOP_NOT_READY) : 1
 583  */
 584 static inline int
 585 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 586 {
 587         int      return_status = QLA_SUCCESS;
 588         unsigned long loop_timeout ;
 589
 590         /* wait for 5 min at the max for loop to be ready */
 591         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 592
 593         while ((!atomic_read(&ha->loop_down_timer) &&
 594             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 595             atomic_read(&ha->loop_state) != LOOP_READY) {
 596                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 597                         return_status = QLA_FUNCTION_FAILED;
 598                         break;
 599                 }
 600                 msleep(1000);
 601                 if (time_after_eq(jiffies, loop_timeout)) {
 602                         return_status = QLA_FUNCTION_FAILED;
 603                         break;
 604                 }
 605         }
 606         return (return_status);
 607 }
 608
 609 static void
 610 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 611 {
 612         struct Scsi_Host *shost = cmnd->device->host;
 613         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 614         unsigned long flags;
 615
 616         spin_lock_irqsave(shost->host_lock, flags);
 617         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 618                 spin_unlock_irqrestore(shost->host_lock, flags);
 619                 msleep(1000);
 620                 spin_lock_irqsave(shost->host_lock, flags);
 621         }
 622         spin_unlock_irqrestore(shost->host_lock, flags);
 623         return;
 624 }
 625
 626 /**************************************************************************
 627 * qla2xxx_eh_abort
 628 *
 629 * Description:
 630 *    The abort function will abort the specified command.
 631 *
 632 * Input:
 633 *    cmd = Linux SCSI command packet to be aborted.
 634 *
 635 * Returns:
 636 *    Either SUCCESS or FAILED.
 637 *
 638 * Note:
 639 *    Only return FAILED if command not returned by firmware.
 640 **************************************************************************/
 641 static int
 642 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 643 {
 644         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 645         srb_t *sp;
 646         int ret, i;
 647         unsigned int id, lun;
 648         unsigned long serial;
 649         unsigned long flags;
 650         int wait = 0;
 651
 652         qla2x00_block_error_handler(cmd);
 653
 654         if (!CMD_SP(cmd))
 655                 return SUCCESS;
 656
 657         ret = SUCCESS;
 658
 659         id = cmd->device->id;
 660         lun = cmd->device->lun;
 661         serial = cmd->serial_number;
 662
 663         /* Check active list for command command. */
 664         spin_lock_irqsave(&ha->hardware_lock, flags);
 665         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 666                 sp = ha->outstanding_cmds[i];
 667
 668                 if (sp == NULL)
 669                         continue;
 670
 671                 if (sp->cmd != cmd)
 672                         continue;
 673
 674                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 675                     __func__, ha->host_no, sp, serial));
 676                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 677
 678                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 679                 if (ha->isp_ops.abort_command(ha, sp)) {
 680                         DEBUG2(printk("%s(%ld): abort_command "
 681                             "mbx failed.\n", __func__, ha->host_no));
 682                 } else {
 683                         DEBUG3(printk("%s(%ld): abort_command "
 684                             "mbx success.\n", __func__, ha->host_no));
 685                         wait = 1;
 686                 }
 687                 spin_lock_irqsave(&ha->hardware_lock, flags);
 688
 689                 break;
 690         }
 691         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 692
 693         /* Wait for the command to be returned. */
 694         if (wait) {
 695                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 696                         qla_printk(KERN_ERR, ha,
 697                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 698                             "%x.\n", ha->host_no, id, lun, serial, ret);
 699                         ret = FAILED;
 700                 }
 701         }
 702
 703         qla_printk(KERN_INFO, ha,
 704             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 705             ha->host_no, id, lun, wait, serial, ret);
 706
 707         return ret;
 708 }
 709
 710 /**************************************************************************
 711 * qla2x00_eh_wait_for_pending_target_commands
 712 *
 713 * Description:
 714 *    Waits for all the commands to come back from the specified target.
 715 *
 716 * Input:
 717 *    ha - pointer to scsi_qla_host structure.
 718 *    t  - target
 719 * Returns:
 720 *    Either SUCCESS or FAILED.
 721 *
 722 * Note:
 723 **************************************************************************/
 724 static int
 725 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 726 {
 727         int     cnt;
 728         int     status;
 729         srb_t           *sp;
 730         struct scsi_cmnd *cmd;
 731         unsigned long flags;
 732
 733         status = 0;
 734
 735         /*
 736          * Waiting for all commands for the designated target in the active
 737          * array
 738          */
 739         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 740                 spin_lock_irqsave(&ha->hardware_lock, flags);
 741                 sp = ha->outstanding_cmds[cnt];
 742                 if (sp) {
 743                         cmd = sp->cmd;
 744                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 745                         if (cmd->device->id == t) {
 746                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 747                                         status = 1;
 748                                         break;
 749                                 }
 750                         }
 751                 } else {
 752                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 753                 }
 754         }
 755         return (status);
 756 }
 757
 758
 759 /**************************************************************************
 760 * qla2xxx_eh_device_reset
 761 *
 762 * Description:
 763 *    The device reset function will reset the target and abort any
 764 *    executing commands.
 765 *
 766 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 767 *          attempt to use this value, even if you determine it is
 768 *          non-null.
 769 *
 770 * Input:
 771 *    cmd = Linux SCSI command packet of the command that cause the
 772 *          bus device reset.
 773 *
 774 * Returns:
 775 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 776 *
 777 **************************************************************************/
 778 static int
 779 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 780 {
 781         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 782         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 783         int ret;
 784         unsigned int id, lun;
 785         unsigned long serial;
 786
 787         qla2x00_block_error_handler(cmd);
 788
 789         ret = FAILED;
 790
 791         id = cmd->device->id;
 792         lun = cmd->device->lun;
 793         serial = cmd->serial_number;
 794
 795         if (!fcport)
 796                 return ret;
 797
 798         qla_printk(KERN_INFO, ha,
 799             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 800
 801         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 802                 goto eh_dev_reset_done;
 803
 804         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 805                 if (qla2x00_device_reset(ha, fcport) == 0)
 806                         ret = SUCCESS;
 807
 808 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 809                 if (ret == SUCCESS) {
 810                         if (fcport->flags & FC_FABRIC_DEVICE) {
 811                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 812                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 813                         }
 814                 }
 815 #endif
 816         } else {
 817                 DEBUG2(printk(KERN_INFO
 818                     "%s failed: loop not ready\n",__func__));
 819         }
 820
 821         if (ret == FAILED) {
 822                 DEBUG3(printk("%s(%ld): device reset failed\n",
 823                     __func__, ha->host_no));
 824                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 825                     __func__);
 826
 827                 goto eh_dev_reset_done;
 828         }
 829
 830         /* Flush outstanding commands. */
 831         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 832                 ret = FAILED;
 833         if (ret == FAILED) {
 834                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 835                     __func__, ha->host_no));
 836                 qla_printk(KERN_INFO, ha,
 837                     "%s: failed while waiting for commands\n", __func__);
 838         } else
 839                 qla_printk(KERN_INFO, ha,
 840                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 841                     id, lun);
 842  eh_dev_reset_done:
 843         return ret;
 844 }
 845
 846 /**************************************************************************
 847 * qla2x00_eh_wait_for_pending_commands
 848 *
 849 * Description:
 850 *    Waits for all the commands to come back from the specified host.
 851 *
 852 * Input:
 853 *    ha - pointer to scsi_qla_host structure.
 854 *
 855 * Returns:
 856 *    1 : SUCCESS
 857 *    0 : FAILED
 858 *
 859 * Note:
 860 **************************************************************************/
 861 static int
 862 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 863 {
 864         int     cnt;
 865         int     status;
 866         srb_t           *sp;
 867         struct scsi_cmnd *cmd;
 868         unsigned long flags;
 869
 870         status = 1;
 871
 872         /*
 873          * Waiting for all commands for the designated target in the active
 874          * array
 875          */
 876         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 877                 spin_lock_irqsave(&ha->hardware_lock, flags);
 878                 sp = ha->outstanding_cmds[cnt];
 879                 if (sp) {
 880                         cmd = sp->cmd;
 881                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 882                         status = qla2x00_eh_wait_on_command(ha, cmd);
 883                         if (status == 0)
 884                                 break;
 885                 }
 886                 else {
 887                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 888                 }
 889         }
 890         return (status);
 891 }
 892
 893
 894 /**************************************************************************
 895 * qla2xxx_eh_bus_reset
 896 *
 897 * Description:
 898 *    The bus reset function will reset the bus and abort any executing
 899 *    commands.
 900 *
 901 * Input:
 902 *    cmd = Linux SCSI command packet of the command that cause the
 903 *          bus reset.
 904 *
 905 * Returns:
 906 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 907 *
 908 **************************************************************************/
 909 static int
 910 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 911 {
 912         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 913         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 914         int ret;
 915         unsigned int id, lun;
 916         unsigned long serial;
 917
 918         qla2x00_block_error_handler(cmd);
 919
 920         ret = FAILED;
 921
 922         id = cmd->device->id;
 923         lun = cmd->device->lun;
 924         serial = cmd->serial_number;
 925
 926         if (!fcport)
 927                 return ret;
 928
 929         qla_printk(KERN_INFO, ha,
 930             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 931
 932         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 933                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 934                 goto eh_bus_reset_done;
 935         }
 936
 937         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 938                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 939                         ret = SUCCESS;
 940         }
 941         if (ret == FAILED)
 942                 goto eh_bus_reset_done;
 943
 944         /* Flush outstanding commands. */
 945         if (!qla2x00_eh_wait_for_pending_commands(ha))
 946                 ret = FAILED;
 947
 948 eh_bus_reset_done:
 949         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 950             (ret == FAILED) ? "failed" : "succeded");
 951
 952         return ret;
 953 }
 954
 955 /**************************************************************************
 956 * qla2xxx_eh_host_reset
 957 *
 958 * Description:
 959 *    The reset function will reset the Adapter.
 960 *
 961 * Input:
 962 *      cmd = Linux SCSI command packet of the command that cause the
 963 *            adapter reset.
 964 *
 965 * Returns:
 966 *      Either SUCCESS or FAILED.
 967 *
 968 * Note:
 969 **************************************************************************/
 970 static int
 971 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 972 {
 973         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 974         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 975         int ret;
 976         unsigned int id, lun;
 977         unsigned long serial;
 978
 979         qla2x00_block_error_handler(cmd);
 980
 981         ret = FAILED;
 982
 983         id = cmd->device->id;
 984         lun = cmd->device->lun;
 985         serial = cmd->serial_number;
 986
 987         if (!fcport)
 988                 return ret;
 989
 990         qla_printk(KERN_INFO, ha,
 991             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 992
 993         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 994                 goto eh_host_reset_lock;
 995
 996         /*
 997          * Fixme-may be dpc thread is active and processing
 998          * loop_resync,so wait a while for it to
 999          * be completed and then issue big hammer.Otherwise
1000          * it may cause I/O failure as big hammer marks the
1001          * devices as lost kicking of the port_down_timer
1002          * while dpc is stuck for the mailbox to complete.
1003          */
1004         qla2x00_wait_for_loop_ready(ha);
1005         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1006         if (qla2x00_abort_isp(ha)) {
1007                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1008                 /* failed. schedule dpc to try */
1009                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1010
1011                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1012                         goto eh_host_reset_lock;
1013         }
1014         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1015
1016         /* Waiting for our command in done_queue to be returned to OS.*/
1017         if (qla2x00_eh_wait_for_pending_commands(ha))
1018                 ret = SUCCESS;
1019
1020 eh_host_reset_lock:
1021         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1022             (ret == FAILED) ? "failed" : "succeded");
1023
1024         return ret;
1025 }
1026
1027 /*
1028 * qla2x00_loop_reset
1029 *      Issue loop reset.
1030 *
1031 * Input:
1032 *      ha = adapter block pointer.
1033 *
1034 * Returns:
1035 *      0 = success
1036 */
1037 static int
1038 qla2x00_loop_reset(scsi_qla_host_t *ha)
1039 {
1040         int ret;
1041         struct fc_port *fcport;
1042
1043         if (ha->flags.enable_lip_full_login) {
1044                 ret = qla2x00_full_login_lip(ha);
1045                 if (ret != QLA_SUCCESS) {
1046                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1047                             "full_login_lip=%d.\n", __func__, ha->host_no,
1048                             ret));
1049                 }
1050                 atomic_set(&ha->loop_state, LOOP_DOWN);
1051                 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
1052                 qla2x00_mark_all_devices_lost(ha, 0);
1053                 qla2x00_wait_for_loop_ready(ha);
1054         }
1055
1056         if (ha->flags.enable_lip_reset) {
1057                 ret = qla2x00_lip_reset(ha);
1058                 if (ret != QLA_SUCCESS) {
1059                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1060                             "lip_reset=%d.\n", __func__, ha->host_no, ret));
1061                 }
1062                 qla2x00_wait_for_loop_ready(ha);
1063         }
1064
1065         if (ha->flags.enable_target_reset) {
1066                 list_for_each_entry(fcport, &ha->fcports, list) {
1067                         if (fcport->port_type != FCT_TARGET)
1068                                 continue;
1069
1070                         ret = qla2x00_device_reset(ha, fcport);
1071                         if (ret != QLA_SUCCESS) {
1072                                 DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1073                                     "target_reset=%d d_id=%x.\n", __func__,
1074                                     ha->host_no, ret, fcport->d_id.b24));
1075                         }
1076                 }
1077         }
1078
1079         /* Issue marker command only when we are going to start the I/O */
1080         ha->marker_needed = 1;
1081
1082         return QLA_SUCCESS;
1083 }
1084
1085 /*
1086  * qla2x00_device_reset
1087  *      Issue bus device reset message to the target.
1088  *
1089  * Input:
1090  *      ha = adapter block pointer.
1091  *      t = SCSI ID.
1092  *      TARGET_QUEUE_LOCK must be released.
1093  *      ADAPTER_STATE_LOCK must be released.
1094  *
1095  * Context:
1096  *      Kernel context.
1097  */
1098 static int
1099 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1100 {
1101         /* Abort Target command will clear Reservation */
1102         return ha->isp_ops.abort_target(reset_fcport);
1103 }
1104
1105 static int
1106 qla2xxx_slave_alloc(struct scsi_device *sdev)
1107 {
1108         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1109
1110         if (!rport || fc_remote_port_chkready(rport))
1111                 return -ENXIO;
1112
1113         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1114
1115         return 0;
1116 }
1117
1118 static int
1119 qla2xxx_slave_configure(struct scsi_device *sdev)
1120 {
1121         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1122         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1123
1124         if (sdev->tagged_supported)
1125                 scsi_activate_tcq(sdev, ha->max_q_depth);
1126         else
1127                 scsi_deactivate_tcq(sdev, ha->max_q_depth);
1128
1129         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1130
1131         return 0;
1132 }
1133
1134 static void
1135 qla2xxx_slave_destroy(struct scsi_device *sdev)
1136 {
1137         sdev->hostdata = NULL;
1138 }
1139
1140 static int
1141 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1142 {
1143         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1144         return sdev->queue_depth;
1145 }
1146
1147 static int
1148 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1149 {
1150         if (sdev->tagged_supported) {
1151                 scsi_set_tag_type(sdev, tag_type);
1152                 if (tag_type)
1153                         scsi_activate_tcq(sdev, sdev->queue_depth);
1154                 else
1155                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1156         } else
1157                 tag_type = 0;
1158
1159         return tag_type;
1160 }
1161
1162 /**
1163  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1164  * @ha: HA context
1165  *
1166  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1167  * supported addressing method.
1168  */
1169 static void
1170 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1171 {
1172         /* Assume a 32bit DMA mask. */
1173         ha->flags.enable_64bit_addressing = 0;
1174
1175         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1176                 /* Any upper-dword bits set? */
1177                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1178                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1179                         /* Ok, a 64bit DMA mask is applicable. */
1180                         ha->flags.enable_64bit_addressing = 1;
1181                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1182                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1183                         return;
1184                 }
1185         }
1186
1187         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1188         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1189 }
1190
1191 static inline void
1192 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1193 {
1194         ha->device_type = DT_EXTENDED_IDS;
1195         switch (ha->pdev->device) {
1196         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1197                 ha->device_type |= DT_ISP2100;
1198                 ha->device_type &= ~DT_EXTENDED_IDS;
1199                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1200                 break;
1201         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1202                 ha->device_type |= DT_ISP2200;
1203                 ha->device_type &= ~DT_EXTENDED_IDS;
1204                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1205                 break;
1206         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1207                 ha->device_type |= DT_ISP2300;
1208                 ha->device_type |= DT_ZIO_SUPPORTED;
1209                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1210                 break;
1211         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1212                 ha->device_type |= DT_ISP2312;
1213                 ha->device_type |= DT_ZIO_SUPPORTED;
1214                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1215                 break;
1216         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1217                 ha->device_type |= DT_ISP2322;
1218                 ha->device_type |= DT_ZIO_SUPPORTED;
1219                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1220                     ha->pdev->subsystem_device == 0x0170)
1221                         ha->device_type |= DT_OEM_001;
1222                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1223                 break;
1224         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1225                 ha->device_type |= DT_ISP6312;
1226                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1227                 break;
1228         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1229                 ha->device_type |= DT_ISP6322;
1230                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1231                 break;
1232         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1233                 ha->device_type |= DT_ISP2422;
1234                 ha->device_type |= DT_ZIO_SUPPORTED;
1235                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1236                 break;
1237         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1238                 ha->device_type |= DT_ISP2432;
1239                 ha->device_type |= DT_ZIO_SUPPORTED;
1240                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1241                 break;
1242         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1243                 ha->device_type |= DT_ISP5422;
1244                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1245                 break;
1246         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1247                 ha->device_type |= DT_ISP5432;
1248                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1249                 break;
1250         }
1251 }
1252
1253 static int
1254 qla2x00_iospace_config(scsi_qla_host_t *ha)
1255 {
1256         unsigned long   pio, pio_len, pio_flags;
1257         unsigned long   mmio, mmio_len, mmio_flags;
1258
1259         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1260         pio = pci_resource_start(ha->pdev, 0);
1261         pio_len = pci_resource_len(ha->pdev, 0);
1262         pio_flags = pci_resource_flags(ha->pdev, 0);
1263         if (pio_flags & IORESOURCE_IO) {
1264                 if (pio_len < MIN_IOBASE_LEN) {
1265                         qla_printk(KERN_WARNING, ha,
1266                             "Invalid PCI I/O region size (%s)...\n",
1267                                 pci_name(ha->pdev));
1268                         pio = 0;
1269                 }
1270         } else {
1271                 qla_printk(KERN_WARNING, ha,
1272                     "region #0 not a PIO resource (%s)...\n",
1273                     pci_name(ha->pdev));
1274                 pio = 0;
1275         }
1276
1277         /* Use MMIO operations for all accesses. */
1278         mmio = pci_resource_start(ha->pdev, 1);
1279         mmio_len = pci_resource_len(ha->pdev, 1);
1280         mmio_flags = pci_resource_flags(ha->pdev, 1);
1281
1282         if (!(mmio_flags & IORESOURCE_MEM)) {
1283                 qla_printk(KERN_ERR, ha,
1284                     "region #0 not an MMIO resource (%s), aborting\n",
1285                     pci_name(ha->pdev));
1286                 goto iospace_error_exit;
1287         }
1288         if (mmio_len < MIN_IOBASE_LEN) {
1289                 qla_printk(KERN_ERR, ha,
1290                     "Invalid PCI mem region size (%s), aborting\n",
1291                         pci_name(ha->pdev));
1292                 goto iospace_error_exit;
1293         }
1294
1295         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1296                 qla_printk(KERN_WARNING, ha,
1297                     "Failed to reserve PIO/MMIO regions (%s)\n",
1298                     pci_name(ha->pdev));
1299
1300                 goto iospace_error_exit;
1301         }
1302
1303         ha->pio_address = pio;
1304         ha->pio_length = pio_len;
1305         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1306         if (!ha->iobase) {
1307                 qla_printk(KERN_ERR, ha,
1308                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1309
1310                 goto iospace_error_exit;
1311         }
1312
1313         return (0);
1314
1315 iospace_error_exit:
1316         return (-ENOMEM);
1317 }
1318
1319 static void
1320 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1321 {
1322         unsigned long flags = 0;
1323         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1324
1325         spin_lock_irqsave(&ha->hardware_lock, flags);
1326         ha->interrupts_on = 1;
1327         /* enable risc and host interrupts */
1328         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1329         RD_REG_WORD(&reg->ictrl);
1330         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1331
1332 }
1333
1334 static void
1335 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1336 {
1337         unsigned long flags = 0;
1338         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1339
1340         spin_lock_irqsave(&ha->hardware_lock, flags);
1341         ha->interrupts_on = 0;
1342         /* disable risc and host interrupts */
1343         WRT_REG_WORD(&reg->ictrl, 0);
1344         RD_REG_WORD(&reg->ictrl);
1345         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1346 }
1347
1348 static void
1349 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1350 {
1351         unsigned long flags = 0;
1352         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1353
1354         spin_lock_irqsave(&ha->hardware_lock, flags);
1355         ha->interrupts_on = 1;
1356         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1357         RD_REG_DWORD(&reg->ictrl);
1358         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1359 }
1360
1361 static void
1362 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1363 {
1364         unsigned long flags = 0;
1365         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1366
1367         spin_lock_irqsave(&ha->hardware_lock, flags);
1368         ha->interrupts_on = 0;
1369         WRT_REG_DWORD(&reg->ictrl, 0);
1370         RD_REG_DWORD(&reg->ictrl);
1371         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1372 }
1373
1374 static void
1375 qla2xxx_scan_start(struct Scsi_Host *shost)
1376 {
1377         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1378
1379         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1380         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1381         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1382 }
1383
1384 static int
1385 qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
1386 {
1387         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1388
1389         if (!ha->host)
1390                 return 1;
1391         if (time > ha->loop_reset_delay * HZ)
1392                 return 1;
1393
1394         return atomic_read(&ha->loop_state) == LOOP_READY;
1395 }
1396
1397 /*
1398  * PCI driver interface
1399  */
1400 static int __devinit
1401 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1402 {
1403         int     ret = -ENODEV;
1404         device_reg_t __iomem *reg;
1405         struct Scsi_Host *host;
1406         scsi_qla_host_t *ha;
1407         unsigned long   flags = 0;
1408         char pci_info[20];
1409         char fw_str[30];
1410         struct scsi_host_template *sht;
1411
1412         if (pci_enable_device(pdev))
1413                 goto probe_out;
1414
1415         sht = &qla2x00_driver_template;
1416         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1417             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
1418             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
1419             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432)
1420                 sht = &qla24xx_driver_template;
1421         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1422         if (host == NULL) {
1423                 printk(KERN_WARNING
1424                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1425                 goto probe_disable_device;
1426         }
1427
1428         /* Clear our data area */
1429         ha = (scsi_qla_host_t *)host->hostdata;
1430         memset(ha, 0, sizeof(scsi_qla_host_t));
1431
1432         ha->pdev = pdev;
1433         ha->host = host;
1434         ha->host_no = host->host_no;
1435         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1436
1437         /* Set ISP-type information. */
1438         qla2x00_set_isp_flags(ha);
1439
1440         /* Configure PCI I/O space */
1441         ret = qla2x00_iospace_config(ha);
1442         if (ret)
1443                 goto probe_failed;
1444
1445         qla_printk(KERN_INFO, ha,
1446             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1447             ha->iobase);
1448
1449         spin_lock_init(&ha->hardware_lock);
1450
1451         ha->prev_topology = 0;
1452         ha->init_cb_size = sizeof(init_cb_t);
1453         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1454         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1455         ha->optrom_size = OPTROM_SIZE_2300;
1456
1457         ha->max_q_depth = MAX_Q_DEPTH;
1458         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1459                 ha->max_q_depth = ql2xmaxqdepth;
1460
1461         /* Assign ISP specific operations. */
1462         ha->isp_ops.pci_config          = qla2100_pci_config;
1463         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1464         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1465         ha->isp_ops.config_rings        = qla2x00_config_rings;
1466         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1467         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1468         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1469         ha->isp_ops.load_risc           = qla2x00_load_risc;
1470         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1471         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1472         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1473         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1474         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1475         ha->isp_ops.abort_command       = qla2x00_abort_command;
1476         ha->isp_ops.abort_target        = qla2x00_abort_target;
1477         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1478         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1479         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1480         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1481         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1482         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1483         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1484         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1485         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1486         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1487         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1488         ha->isp_ops.get_flash_version   = qla2x00_get_flash_version;
1489         if (IS_QLA2100(ha)) {
1490                 host->max_id = MAX_TARGETS_2100;
1491                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1492                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1493                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1494                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1495                 host->sg_tablesize = 32;
1496                 ha->gid_list_info_size = 4;
1497         } else if (IS_QLA2200(ha)) {
1498                 host->max_id = MAX_TARGETS_2200;
1499                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1500                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1501                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1502                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1503                 ha->gid_list_info_size = 4;
1504         } else if (IS_QLA23XX(ha)) {
1505                 host->max_id = MAX_TARGETS_2200;
1506                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1507                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1508                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1509                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1510                 ha->isp_ops.pci_config = qla2300_pci_config;
1511                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1512                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1513                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1514                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1515                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1516                 ha->gid_list_info_size = 6;
1517                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1518                         ha->optrom_size = OPTROM_SIZE_2322;
1519         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1520                 host->max_id = MAX_TARGETS_2200;
1521                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1522                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1523                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1524                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1525                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1526                 ha->mgmt_svr_loop_id = 10;
1527                 ha->isp_ops.pci_config = qla24xx_pci_config;
1528                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1529                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1530                 ha->isp_ops.config_rings = qla24xx_config_rings;
1531                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1532                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1533                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1534                 ha->isp_ops.load_risc = qla24xx_load_risc;
1535                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1536                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1537                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1538                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1539                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1540                 ha->isp_ops.abort_command = qla24xx_abort_command;
1541                 ha->isp_ops.abort_target = qla24xx_abort_target;
1542                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1543                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1544                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1545                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1546                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1547                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1548                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1549                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1550                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1551                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1552                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1553                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1554                 ha->isp_ops.get_flash_version = qla24xx_get_flash_version;
1555                 ha->gid_list_info_size = 8;
1556                 ha->optrom_size = OPTROM_SIZE_24XX;
1557         }
1558         host->can_queue = ha->request_q_length + 128;
1559
1560         /* load the F/W, read paramaters, and init the H/W */
1561         ha->instance = num_hosts;
1562
1563         init_MUTEX(&ha->mbx_cmd_sem);
1564         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1565
1566         INIT_LIST_HEAD(&ha->list);
1567         INIT_LIST_HEAD(&ha->fcports);
1568
1569         qla2x00_config_dma_addressing(ha);
1570         if (qla2x00_mem_alloc(ha)) {
1571                 qla_printk(KERN_WARNING, ha,
1572                     "[ERROR] Failed to allocate memory for adapter\n");
1573
1574                 ret = -ENOMEM;
1575                 goto probe_failed;
1576         }
1577
1578         if (qla2x00_initialize_adapter(ha) &&
1579             !(ha->device_flags & DFLG_NO_CABLE)) {
1580
1581                 qla_printk(KERN_WARNING, ha,
1582                     "Failed to initialize adapter\n");
1583
1584                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1585                     "Adapter flags %x.\n",
1586                     ha->host_no, ha->device_flags));
1587
1588                 ret = -ENODEV;
1589                 goto probe_failed;
1590         }
1591
1592         /*
1593          * Startup the kernel thread for this host adapter
1594          */
1595         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1596                         "%s_dpc", ha->host_str);
1597         if (IS_ERR(ha->dpc_thread)) {
1598                 qla_printk(KERN_WARNING, ha,
1599                     "Unable to start DPC thread!\n");
1600                 ret = PTR_ERR(ha->dpc_thread);
1601                 goto probe_failed;
1602         }
1603
1604         host->this_id = 255;
1605         host->cmd_per_lun = 3;
1606         host->unique_id = ha->instance;
1607         host->max_cmd_len = MAX_CMDSZ;
1608         host->max_channel = MAX_BUSES - 1;
1609         host->max_lun = MAX_LUNS;
1610         host->transportt = qla2xxx_transport_template;
1611
1612         ret = qla2x00_request_irqs(ha);
1613         if (ret)
1614                 goto probe_failed;
1615
1616         /* Initialized the timer */
1617         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1618
1619         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1620             ha->host_no, ha));
1621
1622         ha->isp_ops.disable_intrs(ha);
1623
1624         spin_lock_irqsave(&ha->hardware_lock, flags);
1625         reg = ha->iobase;
1626         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1627                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1628                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1629         } else {
1630                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1631                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1632                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1633
1634                 /* Enable proper parity */
1635                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1636                         if (IS_QLA2300(ha))
1637                                 /* SRAM parity */
1638                                 WRT_REG_WORD(&reg->isp.hccr,
1639                                     (HCCR_ENABLE_PARITY + 0x1));
1640                         else
1641                                 /* SRAM, Instruction RAM and GP RAM parity */
1642                                 WRT_REG_WORD(&reg->isp.hccr,
1643                                     (HCCR_ENABLE_PARITY + 0x7));
1644                 }
1645         }
1646         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1647
1648         ha->isp_ops.enable_intrs(ha);
1649
1650         pci_set_drvdata(pdev, ha);
1651
1652         ha->flags.init_done = 1;
1653         ha->flags.online = 1;
1654
1655         num_hosts++;
1656
1657         ret = scsi_add_host(host, &pdev->dev);
1658         if (ret)
1659                 goto probe_failed;
1660
1661         scsi_scan_host(host);
1662
1663         qla2x00_alloc_sysfs_attr(ha);
1664
1665         qla2x00_init_host_attr(ha);
1666
1667         qla_printk(KERN_INFO, ha, "\n"
1668             " QLogic Fibre Channel HBA Driver: %s\n"
1669             "  QLogic %s - %s\n"
1670             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1671             qla2x00_version_str, ha->model_number,
1672             ha->model_desc ? ha->model_desc: "", pdev->device,
1673             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1674             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1675             ha->isp_ops.fw_version_str(ha, fw_str));
1676
1677         return 0;
1678
1679 probe_failed:
1680         qla2x00_free_device(ha);
1681
1682         scsi_host_put(host);
1683
1684 probe_disable_device:
1685         pci_disable_device(pdev);
1686
1687 probe_out:
1688         return ret;
1689 }
1690
1691 static void __devexit
1692 qla2x00_remove_one(struct pci_dev *pdev)
1693 {
1694         scsi_qla_host_t *ha;
1695
1696         ha = pci_get_drvdata(pdev);
1697
1698         qla2x00_free_sysfs_attr(ha);
1699
1700         fc_remove_host(ha->host);
1701
1702         scsi_remove_host(ha->host);
1703
1704         qla2x00_free_device(ha);
1705
1706         scsi_host_put(ha->host);
1707
1708         pci_set_drvdata(pdev, NULL);
1709 }
1710
1711 static void
1712 qla2x00_free_device(scsi_qla_host_t *ha)
1713 {
1714         /* Disable timer */
1715         if (ha->timer_active)
1716                 qla2x00_stop_timer(ha);
1717
1718         /* Kill the kernel thread for this host */
1719         if (ha->dpc_thread) {
1720                 struct task_struct *t = ha->dpc_thread;
1721
1722                 /*
1723                  * qla2xxx_wake_dpc checks for ->dpc_thread
1724                  * so we need to zero it out.
1725                  */
1726                 ha->dpc_thread = NULL;
1727                 kthread_stop(t);
1728         }
1729
1730         if (ha->eft)
1731                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1732
1733         ha->flags.online = 0;
1734
1735         /* Stop currently executing firmware. */
1736         qla2x00_try_to_stop_firmware(ha);
1737
1738         /* turn-off interrupts on the card */
1739         if (ha->interrupts_on)
1740                 ha->isp_ops.disable_intrs(ha);
1741
1742         qla2x00_mem_free(ha);
1743
1744         qla2x00_free_irqs(ha);
1745
1746         /* release io space registers  */
1747         if (ha->iobase)
1748                 iounmap(ha->iobase);
1749         pci_release_regions(ha->pdev);
1750
1751         pci_disable_device(ha->pdev);
1752 }
1753
1754 static inline void
1755 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1756     int defer)
1757 {
1758         unsigned long flags;
1759         struct fc_rport *rport;
1760
1761         if (!fcport->rport)
1762                 return;
1763
1764         rport = fcport->rport;
1765         if (defer) {
1766                 spin_lock_irqsave(&fcport->rport_lock, flags);
1767                 fcport->drport = rport;
1768                 fcport->rport = NULL;
1769                 *(fc_port_t **)rport->dd_data = NULL;
1770                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1771                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1772         } else {
1773                 spin_lock_irqsave(&fcport->rport_lock, flags);
1774                 fcport->rport = NULL;
1775                 *(fc_port_t **)rport->dd_data = NULL;
1776                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1777                 fc_remote_port_delete(rport);
1778         }
1779 }
1780
1781 /*
1782  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1783  *
1784  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1785  *
1786  * Return: None.
1787  *
1788  * Context:
1789  */
1790 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1791     int do_login, int defer)
1792 {
1793         if (atomic_read(&fcport->state) == FCS_ONLINE)
1794                 qla2x00_schedule_rport_del(ha, fcport, defer);
1795
1796         /*
1797          * We may need to retry the login, so don't change the state of the
1798          * port but do the retries.
1799          */
1800         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1801                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1802
1803         if (!do_login)
1804                 return;
1805
1806         if (fcport->login_retry == 0) {
1807                 fcport->login_retry = ha->login_retry_count;
1808                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1809
1810                 DEBUG(printk("scsi(%ld): Port login retry: "
1811                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1812                     "id = 0x%04x retry cnt=%d\n",
1813                     ha->host_no,
1814                     fcport->port_name[0],
1815                     fcport->port_name[1],
1816                     fcport->port_name[2],
1817                     fcport->port_name[3],
1818                     fcport->port_name[4],
1819                     fcport->port_name[5],
1820                     fcport->port_name[6],
1821                     fcport->port_name[7],
1822                     fcport->loop_id,
1823                     fcport->login_retry));
1824         }
1825 }
1826
1827 /*
1828  * qla2x00_mark_all_devices_lost
1829  *      Updates fcport state when device goes offline.
1830  *
1831  * Input:
1832  *      ha = adapter block pointer.
1833  *      fcport = port structure pointer.
1834  *
1835  * Return:
1836  *      None.
1837  *
1838  * Context:
1839  */
1840 void
1841 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1842 {
1843         fc_port_t *fcport;
1844
1845         list_for_each_entry(fcport, &ha->fcports, list) {
1846                 if (fcport->port_type != FCT_TARGET)
1847                         continue;
1848
1849                 /*
1850                  * No point in marking the device as lost, if the device is
1851                  * already DEAD.
1852                  */
1853                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1854                         continue;
1855                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1856                         qla2x00_schedule_rport_del(ha, fcport, defer);
1857                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1858         }
1859
1860         if (defer)
1861                 qla2xxx_wake_dpc(ha);
1862 }
1863
1864 /*
1865 * qla2x00_mem_alloc
1866 *      Allocates adapter memory.
1867 *
1868 * Returns:
1869 *      0  = success.
1870 *      1  = failure.
1871 */
1872 static uint8_t
1873 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1874 {
1875         char    name[16];
1876         uint8_t   status = 1;
1877         int     retry= 10;
1878
1879         do {
1880                 /*
1881                  * This will loop only once if everything goes well, else some
1882                  * number of retries will be performed to get around a kernel
1883                  * bug where available mem is not allocated until after a
1884                  * little delay and a retry.
1885                  */
1886                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1887                     (ha->request_q_length + 1) * sizeof(request_t),
1888                     &ha->request_dma, GFP_KERNEL);
1889                 if (ha->request_ring == NULL) {
1890                         qla_printk(KERN_WARNING, ha,
1891                             "Memory Allocation failed - request_ring\n");
1892
1893                         qla2x00_mem_free(ha);
1894                         msleep(100);
1895
1896                         continue;
1897                 }
1898
1899                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1900                     (ha->response_q_length + 1) * sizeof(response_t),
1901                     &ha->response_dma, GFP_KERNEL);
1902                 if (ha->response_ring == NULL) {
1903                         qla_printk(KERN_WARNING, ha,
1904                             "Memory Allocation failed - response_ring\n");
1905
1906                         qla2x00_mem_free(ha);
1907                         msleep(100);
1908
1909                         continue;
1910                 }
1911
1912                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1913                     &ha->gid_list_dma, GFP_KERNEL);
1914                 if (ha->gid_list == NULL) {
1915                         qla_printk(KERN_WARNING, ha,
1916                             "Memory Allocation failed - gid_list\n");
1917
1918                         qla2x00_mem_free(ha);
1919                         msleep(100);
1920
1921                         continue;
1922                 }
1923
1924                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1925                     ha->host_no);
1926                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1927                     DMA_POOL_SIZE, 8, 0);
1928                 if (ha->s_dma_pool == NULL) {
1929                         qla_printk(KERN_WARNING, ha,
1930                             "Memory Allocation failed - s_dma_pool\n");
1931
1932                         qla2x00_mem_free(ha);
1933                         msleep(100);
1934
1935                         continue;
1936                 }
1937
1938                 /* get consistent memory allocated for init control block */
1939                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1940                     &ha->init_cb_dma);
1941                 if (ha->init_cb == NULL) {
1942                         qla_printk(KERN_WARNING, ha,
1943                             "Memory Allocation failed - init_cb\n");
1944
1945                         qla2x00_mem_free(ha);
1946                         msleep(100);
1947
1948                         continue;
1949                 }
1950                 memset(ha->init_cb, 0, ha->init_cb_size);
1951
1952                 if (qla2x00_allocate_sp_pool(ha)) {
1953                         qla_printk(KERN_WARNING, ha,
1954                             "Memory Allocation failed - "
1955                             "qla2x00_allocate_sp_pool()\n");
1956
1957                         qla2x00_mem_free(ha);
1958                         msleep(100);
1959
1960                         continue;
1961                 }
1962
1963                 /* Allocate memory for SNS commands */
1964                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1965                         /* Get consistent memory allocated for SNS commands */
1966                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1967                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1968                             GFP_KERNEL);
1969                         if (ha->sns_cmd == NULL) {
1970                                 /* error */
1971                                 qla_printk(KERN_WARNING, ha,
1972                                     "Memory Allocation failed - sns_cmd\n");
1973
1974                                 qla2x00_mem_free(ha);
1975                                 msleep(100);
1976
1977                                 continue;
1978                         }
1979                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1980                 } else {
1981                         /* Get consistent memory allocated for MS IOCB */
1982                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1983                             &ha->ms_iocb_dma);
1984                         if (ha->ms_iocb == NULL) {
1985                                 /* error */
1986                                 qla_printk(KERN_WARNING, ha,
1987                                     "Memory Allocation failed - ms_iocb\n");
1988
1989                                 qla2x00_mem_free(ha);
1990                                 msleep(100);
1991
1992                                 continue;
1993                         }
1994                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1995
1996                         /*
1997                          * Get consistent memory allocated for CT SNS
1998                          * commands
1999                          */
2000                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2001                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2002                             GFP_KERNEL);
2003                         if (ha->ct_sns == NULL) {
2004                                 /* error */
2005                                 qla_printk(KERN_WARNING, ha,
2006                                     "Memory Allocation failed - ct_sns\n");
2007
2008                                 qla2x00_mem_free(ha);
2009                                 msleep(100);
2010
2011                                 continue;
2012                         }
2013                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2014
2015                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2016                                 /*
2017                                  * Get consistent memory allocated for SFP
2018                                  * block.
2019                                  */
2020                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2021                                     GFP_KERNEL, &ha->sfp_data_dma);
2022                                 if (ha->sfp_data == NULL) {
2023                                         qla_printk(KERN_WARNING, ha,
2024                                             "Memory Allocation failed - "
2025                                             "sfp_data\n");
2026
2027                                         qla2x00_mem_free(ha);
2028                                         msleep(100);
2029
2030                                         continue;
2031                                 }
2032                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2033                         }
2034                 }
2035
2036                 /* Done all allocations without any error. */
2037                 status = 0;
2038
2039         } while (retry-- && status != 0);
2040
2041         if (status) {
2042                 printk(KERN_WARNING
2043                         "%s(): **** FAILED ****\n", __func__);
2044         }
2045
2046         return(status);
2047 }
2048
2049 /*
2050 * qla2x00_mem_free
2051 *      Frees all adapter allocated memory.
2052 *
2053 * Input:
2054 *      ha = adapter block pointer.
2055 */
2056 static void
2057 qla2x00_mem_free(scsi_qla_host_t *ha)
2058 {
2059         struct list_head        *fcpl, *fcptemp;
2060         fc_port_t       *fcport;
2061
2062         if (ha == NULL) {
2063                 /* error */
2064                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2065                 return;
2066         }
2067
2068         /* free sp pool */
2069         qla2x00_free_sp_pool(ha);
2070
2071         if (ha->fw_dump) {
2072                 if (ha->eft)
2073                         dma_free_coherent(&ha->pdev->dev,
2074                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2075                 vfree(ha->fw_dump);
2076         }
2077
2078         if (ha->sns_cmd)
2079                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2080                     ha->sns_cmd, ha->sns_cmd_dma);
2081
2082         if (ha->ct_sns)
2083                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2084                     ha->ct_sns, ha->ct_sns_dma);
2085
2086         if (ha->sfp_data)
2087                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2088
2089         if (ha->ms_iocb)
2090                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2091
2092         if (ha->init_cb)
2093                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2094
2095         if (ha->s_dma_pool)
2096                 dma_pool_destroy(ha->s_dma_pool);
2097
2098         if (ha->gid_list)
2099                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2100                     ha->gid_list_dma);
2101
2102         if (ha->response_ring)
2103                 dma_free_coherent(&ha->pdev->dev,
2104                     (ha->response_q_length + 1) * sizeof(response_t),
2105                     ha->response_ring, ha->response_dma);
2106
2107         if (ha->request_ring)
2108                 dma_free_coherent(&ha->pdev->dev,
2109                     (ha->request_q_length + 1) * sizeof(request_t),
2110                     ha->request_ring, ha->request_dma);
2111
2112         ha->eft = NULL;
2113         ha->eft_dma = 0;
2114         ha->sns_cmd = NULL;
2115         ha->sns_cmd_dma = 0;
2116         ha->ct_sns = NULL;
2117         ha->ct_sns_dma = 0;
2118         ha->ms_iocb = NULL;
2119         ha->ms_iocb_dma = 0;
2120         ha->init_cb = NULL;
2121         ha->init_cb_dma = 0;
2122
2123         ha->s_dma_pool = NULL;
2124
2125         ha->gid_list = NULL;
2126         ha->gid_list_dma = 0;
2127
2128         ha->response_ring = NULL;
2129         ha->response_dma = 0;
2130         ha->request_ring = NULL;
2131         ha->request_dma = 0;
2132
2133         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2134                 fcport = list_entry(fcpl, fc_port_t, list);
2135
2136                 /* fc ports */
2137                 list_del_init(&fcport->list);
2138                 kfree(fcport);
2139         }
2140         INIT_LIST_HEAD(&ha->fcports);
2141
2142         ha->fw_dump = NULL;
2143         ha->fw_dumped = 0;
2144         ha->fw_dump_reading = 0;
2145
2146         vfree(ha->optrom_buffer);
2147 }
2148
2149 /*
2150  * qla2x00_allocate_sp_pool
2151  *       This routine is called during initialization to allocate
2152  *       memory for local srb_t.
2153  *
2154  * Input:
2155  *       ha   = adapter block pointer.
2156  *
2157  * Context:
2158  *      Kernel context.
2159  */
2160 static int
2161 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2162 {
2163         int      rval;
2164
2165         rval = QLA_SUCCESS;
2166         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2167         if (ha->srb_mempool == NULL) {
2168                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2169                 rval = QLA_FUNCTION_FAILED;
2170         }
2171         return (rval);
2172 }
2173
2174 /*
2175  *  This routine frees all adapter allocated memory.
2176  *
2177  */
2178 static void
2179 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2180 {
2181         if (ha->srb_mempool) {
2182                 mempool_destroy(ha->srb_mempool);
2183                 ha->srb_mempool = NULL;
2184         }
2185 }
2186
2187 /**************************************************************************
2188 * qla2x00_do_dpc
2189 *   This kernel thread is a task that is schedule by the interrupt handler
2190 *   to perform the background processing for interrupts.
2191 *
2192 * Notes:
2193 * This task always run in the context of a kernel thread.  It
2194 * is kick-off by the driver's detect code and starts up
2195 * up one per adapter. It immediately goes to sleep and waits for
2196 * some fibre event.  When either the interrupt handler or
2197 * the timer routine detects a event it will one of the task
2198 * bits then wake us up.
2199 **************************************************************************/
2200 static int
2201 qla2x00_do_dpc(void *data)
2202 {
2203         scsi_qla_host_t *ha;
2204         fc_port_t       *fcport;
2205         uint8_t         status;
2206         uint16_t        next_loopid;
2207
2208         ha = (scsi_qla_host_t *)data;
2209
2210         set_user_nice(current, -20);
2211
2212         while (!kthread_should_stop()) {
2213                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2214
2215                 set_current_state(TASK_INTERRUPTIBLE);
2216                 schedule();
2217                 __set_current_state(TASK_RUNNING);
2218
2219                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2220
2221                 /* Initialization not yet finished. Don't do anything yet. */
2222                 if (!ha->flags.init_done)
2223                         continue;
2224
2225                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2226
2227                 ha->dpc_active = 1;
2228
2229                 if (ha->flags.mbox_busy) {
2230                         ha->dpc_active = 0;
2231                         continue;
2232                 }
2233
2234                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2235
2236                         DEBUG(printk("scsi(%ld): dpc: sched "
2237                             "qla2x00_abort_isp ha = %p\n",
2238                             ha->host_no, ha));
2239                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2240                             &ha->dpc_flags))) {
2241
2242                                 if (qla2x00_abort_isp(ha)) {
2243                                         /* failed. retry later */
2244                                         set_bit(ISP_ABORT_NEEDED,
2245                                             &ha->dpc_flags);
2246                                 }
2247                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2248                         }
2249                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2250                             ha->host_no));
2251                 }
2252
2253                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2254                         qla2x00_update_fcports(ha);
2255
2256                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2257                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2258                             ha->host_no));
2259                         qla2x00_loop_reset(ha);
2260                 }
2261
2262                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2263                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2264
2265                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2266                             ha->host_no));
2267
2268                         qla2x00_rst_aen(ha);
2269                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2270                 }
2271
2272                 /* Retry each device up to login retry count */
2273                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2274                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2275                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2276
2277                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2278                             ha->host_no));
2279
2280                         next_loopid = 0;
2281                         list_for_each_entry(fcport, &ha->fcports, list) {
2282                                 /*
2283                                  * If the port is not ONLINE then try to login
2284                                  * to it if we haven't run out of retries.
2285                                  */
2286                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2287                                     fcport->login_retry) {
2288
2289                                         fcport->login_retry--;
2290                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2291                                                 if (fcport->flags &
2292                                                     FCF_TAPE_PRESENT)
2293                                                         ha->isp_ops.fabric_logout(
2294                                                             ha, fcport->loop_id,
2295                                                             fcport->d_id.b.domain,
2296                                                             fcport->d_id.b.area,
2297                                                             fcport->d_id.b.al_pa);
2298                                                 status = qla2x00_fabric_login(
2299                                                     ha, fcport, &next_loopid);
2300                                         } else
2301                                                 status =
2302                                                     qla2x00_local_device_login(
2303                                                         ha, fcport);
2304
2305                                         if (status == QLA_SUCCESS) {
2306                                                 fcport->old_loop_id = fcport->loop_id;
2307
2308                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2309                                                     ha->host_no, fcport->loop_id));
2310
2311                                                 qla2x00_update_fcport(ha,
2312                                                     fcport);
2313                                         } else if (status == 1) {
2314                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2315                                                 /* retry the login again */
2316                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2317                                                     ha->host_no,
2318                                                     fcport->login_retry, fcport->loop_id));
2319                                         } else {
2320                                                 fcport->login_retry = 0;
2321                                         }
2322                                 }
2323                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2324                                         break;
2325                         }
2326                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2327                             ha->host_no));
2328                 }
2329
2330                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2331                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2332
2333                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2334                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2335                             ha->host_no));
2336
2337                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2338
2339                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2340                             ha->host_no));
2341                 }
2342
2343                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2344
2345                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2346                             ha->host_no));
2347
2348                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2349                             &ha->dpc_flags))) {
2350
2351                                 qla2x00_loop_resync(ha);
2352
2353                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2354                         }
2355
2356                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2357                             ha->host_no));
2358                 }
2359
2360                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2361
2362                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2363                             ha->host_no));
2364
2365                         qla2x00_rescan_fcports(ha);
2366
2367                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2368                             "end.\n",
2369                             ha->host_no));
2370                 }
2371
2372                 if (!ha->interrupts_on)
2373                         ha->isp_ops.enable_intrs(ha);
2374
2375                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2376                         ha->isp_ops.beacon_blink(ha);
2377
2378                 ha->dpc_active = 0;
2379         } /* End of while(1) */
2380
2381         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2382
2383         /*
2384          * Make sure that nobody tries to wake us up again.
2385          */
2386         ha->dpc_active = 0;
2387
2388         return 0;
2389 }
2390
2391 void
2392 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2393 {
2394         if (ha->dpc_thread)
2395                 wake_up_process(ha->dpc_thread);
2396 }
2397
2398 /*
2399 *  qla2x00_rst_aen
2400 *      Processes asynchronous reset.
2401 *
2402 * Input:
2403 *      ha  = adapter block pointer.
2404 */
2405 static void
2406 qla2x00_rst_aen(scsi_qla_host_t *ha)
2407 {
2408         if (ha->flags.online && !ha->flags.reset_active &&
2409             !atomic_read(&ha->loop_down_timer) &&
2410             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2411                 do {
2412                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2413
2414                         /*
2415                          * Issue marker command only when we are going to start
2416                          * the I/O.
2417                          */
2418                         ha->marker_needed = 1;
2419                 } while (!atomic_read(&ha->loop_down_timer) &&
2420                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2421         }
2422 }
2423
2424 static void
2425 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2426 {
2427         struct scsi_cmnd *cmd = sp->cmd;
2428
2429         if (sp->flags & SRB_DMA_VALID) {
2430                 if (cmd->use_sg) {
2431                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2432                             cmd->use_sg, cmd->sc_data_direction);
2433                 } else if (cmd->request_bufflen) {
2434                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2435                             cmd->request_bufflen, cmd->sc_data_direction);
2436                 }
2437                 sp->flags &= ~SRB_DMA_VALID;
2438         }
2439         CMD_SP(cmd) = NULL;
2440 }
2441
2442 void
2443 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2444 {
2445         struct scsi_cmnd *cmd = sp->cmd;
2446
2447         qla2x00_sp_free_dma(ha, sp);
2448
2449         mempool_free(sp, ha->srb_mempool);
2450
2451         cmd->scsi_done(cmd);
2452 }
2453
2454 /**************************************************************************
2455 *   qla2x00_timer
2456 *
2457 * Description:
2458 *   One second timer
2459 *
2460 * Context: Interrupt
2461 ***************************************************************************/
2462 static void
2463 qla2x00_timer(scsi_qla_host_t *ha)
2464 {
2465         unsigned long   cpu_flags = 0;
2466         fc_port_t       *fcport;
2467         int             start_dpc = 0;
2468         int             index;
2469         srb_t           *sp;
2470         int             t;
2471
2472         /*
2473          * Ports - Port down timer.
2474          *
2475          * Whenever, a port is in the LOST state we start decrementing its port
2476          * down timer every second until it reaches zero. Once  it reaches zero
2477          * the port it marked DEAD.
2478          */
2479         t = 0;
2480         list_for_each_entry(fcport, &ha->fcports, list) {
2481                 if (fcport->port_type != FCT_TARGET)
2482                         continue;
2483
2484                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2485
2486                         if (atomic_read(&fcport->port_down_timer) == 0)
2487                                 continue;
2488
2489                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2490                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2491
2492                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2493                             "%d remaining\n",
2494                             ha->host_no,
2495                             t, atomic_read(&fcport->port_down_timer)));
2496                 }
2497                 t++;
2498         } /* End of for fcport  */
2499
2500
2501         /* Loop down handler. */
2502         if (atomic_read(&ha->loop_down_timer) > 0 &&
2503             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2504
2505                 if (atomic_read(&ha->loop_down_timer) ==
2506                     ha->loop_down_abort_time) {
2507
2508                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2509                             "queues before time expire\n",
2510                             ha->host_no));
2511
2512                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2513                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2514
2515                         /* Schedule an ISP abort to return any tape commands. */
2516                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2517                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2518                             index++) {
2519                                 fc_port_t *sfcp;
2520
2521                                 sp = ha->outstanding_cmds[index];
2522                                 if (!sp)
2523                                         continue;
2524                                 sfcp = sp->fcport;
2525                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2526                                         continue;
2527
2528                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2529                                 break;
2530                         }
2531                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2532
2533                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2534                         start_dpc++;
2535                 }
2536
2537                 /* if the loop has been down for 4 minutes, reinit adapter */
2538                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2539                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2540                             "restarting queues.\n",
2541                             ha->host_no));
2542
2543                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2544                         start_dpc++;
2545
2546                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2547                                 DEBUG(printk("scsi(%ld): Loop down - "
2548                                     "aborting ISP.\n",
2549                                     ha->host_no));
2550                                 qla_printk(KERN_WARNING, ha,
2551                                     "Loop down - aborting ISP.\n");
2552
2553                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2554                         }
2555                 }
2556                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2557                     ha->host_no,
2558                     atomic_read(&ha->loop_down_timer)));
2559         }
2560
2561         /* Check if beacon LED needs to be blinked */
2562         if (ha->beacon_blink_led == 1) {
2563                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2564                 start_dpc++;
2565         }
2566
2567         /* Schedule the DPC routine if needed */
2568         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2569             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2570             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2571             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2572             start_dpc ||
2573             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2574             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2575             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2576             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2577                 qla2xxx_wake_dpc(ha);
2578
2579         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2580 }
2581
2582 /* XXX(hch): crude hack to emulate a down_timeout() */
2583 int
2584 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2585 {
2586         const unsigned int step = 100; /* msecs */
2587         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2588
2589         do {
2590                 if (!down_trylock(sema))
2591                         return 0;
2592                 if (msleep_interruptible(step))
2593                         break;
2594         } while (--iterations >= 0);
2595
2596         return -ETIMEDOUT;
2597 }
2598
2599 /* Firmware interface routines. */
2600
2601 #define FW_BLOBS        5
2602 #define FW_ISP21XX      0
2603 #define FW_ISP22XX      1
2604 #define FW_ISP2300      2
2605 #define FW_ISP2322      3
2606 #define FW_ISP24XX      4
2607
2608 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2609 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2610 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2611 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2612 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2613
2614 static DECLARE_MUTEX(qla_fw_lock);
2615
2616 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2617         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2618         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2619         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2620         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2621         { .name = FW_FILE_ISP24XX, },
2622 };
2623
2624 struct fw_blob *
2625 qla2x00_request_firmware(scsi_qla_host_t *ha)
2626 {
2627         struct fw_blob *blob;
2628
2629         blob = NULL;
2630         if (IS_QLA2100(ha)) {
2631                 blob = &qla_fw_blobs[FW_ISP21XX];
2632         } else if (IS_QLA2200(ha)) {
2633                 blob = &qla_fw_blobs[FW_ISP22XX];
2634         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2635                 blob = &qla_fw_blobs[FW_ISP2300];
2636         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2637                 blob = &qla_fw_blobs[FW_ISP2322];
2638         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2639                 blob = &qla_fw_blobs[FW_ISP24XX];
2640         }
2641
2642         down(&qla_fw_lock);
2643         if (blob->fw)
2644                 goto out;
2645
2646         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2647                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2648                     "(%s).\n", ha->host_no, blob->name));
2649                 blob->fw = NULL;
2650                 blob = NULL;
2651                 goto out;
2652         }
2653
2654 out:
2655         up(&qla_fw_lock);
2656         return blob;
2657 }
2658
2659 static void
2660 qla2x00_release_firmware(void)
2661 {
2662         int idx;
2663
2664         down(&qla_fw_lock);
2665         for (idx = 0; idx < FW_BLOBS; idx++)
2666                 if (qla_fw_blobs[idx].fw)
2667                         release_firmware(qla_fw_blobs[idx].fw);
2668         up(&qla_fw_lock);
2669 }
2670
2671 static struct pci_device_id qla2xxx_pci_tbl[] = {
2672         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2673         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2674         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2675         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2676         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2677         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2678         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2679         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2680         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2681         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2682         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2683         { 0 },
2684 };
2685 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2686
2687 static struct pci_driver qla2xxx_pci_driver = {
2688         .name           = QLA2XXX_DRIVER_NAME,
2689         .driver         = {
2690                 .owner          = THIS_MODULE,
2691         },
2692         .id_table       = qla2xxx_pci_tbl,
2693         .probe          = qla2x00_probe_one,
2694         .remove         = __devexit_p(qla2x00_remove_one),
2695 };
2696
2697 /**
2698  * qla2x00_module_init - Module initialization.
2699  **/
2700 static int __init
2701 qla2x00_module_init(void)
2702 {
2703         int ret = 0;
2704
2705         /* Allocate cache for SRBs. */
2706         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2707             SLAB_HWCACHE_ALIGN, NULL, NULL);
2708         if (srb_cachep == NULL) {
2709                 printk(KERN_ERR
2710                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2711                 return -ENOMEM;
2712         }
2713
2714         /* Derive version string. */
2715         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2716         if (ql2xextended_error_logging)
2717                 strcat(qla2x00_version_str, "-debug");
2718
2719         qla2xxx_transport_template =
2720             fc_attach_transport(&qla2xxx_transport_functions);
2721         if (!qla2xxx_transport_template)
2722                 return -ENODEV;
2723
2724         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2725         ret = pci_register_driver(&qla2xxx_pci_driver);
2726         if (ret) {
2727                 kmem_cache_destroy(srb_cachep);
2728                 fc_release_transport(qla2xxx_transport_template);
2729         }
2730         return ret;
2731 }
2732
2733 /**
2734  * qla2x00_module_exit - Module cleanup.
2735  **/
2736 static void __exit
2737 qla2x00_module_exit(void)
2738 {
2739         pci_unregister_driver(&qla2xxx_pci_driver);
2740         qla2x00_release_firmware();
2741         kmem_cache_destroy(srb_cachep);
2742         fc_release_transport(qla2xxx_transport_template);
2743 }
2744
2745 module_init(qla2x00_module_init);
2746 module_exit(qla2x00_module_exit);
2747
2748 MODULE_AUTHOR("QLogic Corporation");
2749 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2750 MODULE_LICENSE("GPL");
2751 MODULE_VERSION(QLA2XXX_VERSION);
2752 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2753 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2754 MODULE_FIRMWARE(FW_FILE_ISP2300);
2755 MODULE_FIRMWARE(FW_FILE_ISP2322);
2756 MODULE_FIRMWARE(FW_FILE_ISP24XX);