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

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
  58 int ql2xfwloadflash;
  59 module_param(ql2xfwloadflash, int, S_IRUGO|S_IRUSR);
  60 MODULE_PARM_DESC(ql2xfwloadflash,
  61                 "Load ISP24xx firmware image from FLASH (onboard memory).");
  62 #endif
  63
  64 static void qla2x00_free_device(scsi_qla_host_t *);
  65
  66 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  67
  68 int ql2xfdmienable;
  69 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  70 MODULE_PARM_DESC(ql2xfdmienable,
  71                 "Enables FDMI registratons "
  72                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  73
  74 int ql2xprocessrscn;
  75 module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xprocessrscn,
  77                 "Option to enable port RSCN handling via a series of less"
  78                 "fabric intrusive ADISCs and PLOGIs.");
  79
  80 /*
  81  * SCSI host template entry points
  82  */
  83 static int qla2xxx_slave_configure(struct scsi_device * device);
  84 static int qla2xxx_slave_alloc(struct scsi_device *);
  85 static void qla2xxx_slave_destroy(struct scsi_device *);
  86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  87                 void (*fn)(struct scsi_cmnd *));
  88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  89                 void (*fn)(struct scsi_cmnd *));
  90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  96
  97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  98 static int qla2x00_change_queue_type(struct scsi_device *, int);
  99
 100 static struct scsi_host_template qla2x00_driver_template = {
 101         .module                 = THIS_MODULE,
 102         .name                   = "qla2xxx",
 103         .queuecommand           = qla2x00_queuecommand,
 104
 105         .eh_abort_handler       = qla2xxx_eh_abort,
 106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 109
 110         .slave_configure        = qla2xxx_slave_configure,
 111
 112         .slave_alloc            = qla2xxx_slave_alloc,
 113         .slave_destroy          = qla2xxx_slave_destroy,
 114         .change_queue_depth     = qla2x00_change_queue_depth,
 115         .change_queue_type      = qla2x00_change_queue_type,
 116         .this_id                = -1,
 117         .cmd_per_lun            = 3,
 118         .use_clustering         = ENABLE_CLUSTERING,
 119         .sg_tablesize           = SG_ALL,
 120
 121         /*
 122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 123          * which equates to 0x800000 sectors.
 124          */
 125         .max_sectors            = 0xFFFF,
 126         .shost_attrs            = qla2x00_host_attrs,
 127 };
 128
 129 static struct scsi_host_template qla24xx_driver_template = {
 130         .module                 = THIS_MODULE,
 131         .name                   = "qla2xxx",
 132         .queuecommand           = qla24xx_queuecommand,
 133
 134         .eh_abort_handler       = qla2xxx_eh_abort,
 135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 138
 139         .slave_configure        = qla2xxx_slave_configure,
 140
 141         .slave_alloc            = qla2xxx_slave_alloc,
 142         .slave_destroy          = qla2xxx_slave_destroy,
 143         .change_queue_depth     = qla2x00_change_queue_depth,
 144         .change_queue_type      = qla2x00_change_queue_type,
 145         .this_id                = -1,
 146         .cmd_per_lun            = 3,
 147         .use_clustering         = ENABLE_CLUSTERING,
 148         .sg_tablesize           = SG_ALL,
 149
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 155
 156 /* TODO Convert to inlines
 157  *
 158  * Timer routines
 159  */
 160 #define WATCH_INTERVAL          1       /* number of seconds */
 161
 162 static void qla2x00_timer(scsi_qla_host_t *);
 163
 164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 165     void *, unsigned long);
 166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 168
 169 static inline void
 170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 171 {
 172         init_timer(&ha->timer);
 173         ha->timer.expires = jiffies + interval * HZ;
 174         ha->timer.data = (unsigned long)ha;
 175         ha->timer.function = (void (*)(unsigned long))func;
 176         add_timer(&ha->timer);
 177         ha->timer_active = 1;
 178 }
 179
 180 static inline void
 181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 182 {
 183         mod_timer(&ha->timer, jiffies + interval * HZ);
 184 }
 185
 186 static __inline__ void
 187 qla2x00_stop_timer(scsi_qla_host_t *ha)
 188 {
 189         del_timer_sync(&ha->timer);
 190         ha->timer_active = 0;
 191 }
 192
 193 static int qla2x00_do_dpc(void *data);
 194
 195 static void qla2x00_rst_aen(scsi_qla_host_t *);
 196
 197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 203
 204 /* -------------------------------------------------------------------------- */
 205
 206 static char *
 207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 208 {
 209         static char *pci_bus_modes[] = {
 210                 "33", "66", "100", "133",
 211         };
 212         uint16_t pci_bus;
 213
 214         strcpy(str, "PCI");
 215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 216         if (pci_bus) {
 217                 strcat(str, "-X (");
 218                 strcat(str, pci_bus_modes[pci_bus]);
 219         } else {
 220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 221                 strcat(str, " (");
 222                 strcat(str, pci_bus_modes[pci_bus]);
 223         }
 224         strcat(str, " MHz)");
 225
 226         return (str);
 227 }
 228
 229 static char *
 230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 231 {
 232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 233         uint32_t pci_bus;
 234         int pcie_reg;
 235
 236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 237         if (pcie_reg) {
 238                 char lwstr[6];
 239                 uint16_t pcie_lstat, lspeed, lwidth;
 240
 241                 pcie_reg += 0x12;
 242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 244                 lwidth = (pcie_lstat &
 245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 246
 247                 strcpy(str, "PCIe (");
 248                 if (lspeed == 1)
 249                         strcat(str, "2.5Gb/s ");
 250                 else
 251                         strcat(str, "<unknown> ");
 252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 253                 strcat(str, lwstr);
 254
 255                 return str;
 256         }
 257
 258         strcpy(str, "PCI");
 259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 260         if (pci_bus == 0 || pci_bus == 8) {
 261                 strcat(str, " (");
 262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 263         } else {
 264                 strcat(str, "-X ");
 265                 if (pci_bus & BIT_2)
 266                         strcat(str, "Mode 2");
 267                 else
 268                         strcat(str, "Mode 1");
 269                 strcat(str, " (");
 270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 271         }
 272         strcat(str, " MHz)");
 273
 274         return str;
 275 }
 276
 277 char *
 278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 279 {
 280         char un_str[10];
 281
 282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 283             ha->fw_minor_version,
 284             ha->fw_subminor_version);
 285
 286         if (ha->fw_attributes & BIT_9) {
 287                 strcat(str, "FLX");
 288                 return (str);
 289         }
 290
 291         switch (ha->fw_attributes & 0xFF) {
 292         case 0x7:
 293                 strcat(str, "EF");
 294                 break;
 295         case 0x17:
 296                 strcat(str, "TP");
 297                 break;
 298         case 0x37:
 299                 strcat(str, "IP");
 300                 break;
 301         case 0x77:
 302                 strcat(str, "VI");
 303                 break;
 304         default:
 305                 sprintf(un_str, "(%x)", ha->fw_attributes);
 306                 strcat(str, un_str);
 307                 break;
 308         }
 309         if (ha->fw_attributes & 0x100)
 310                 strcat(str, "X");
 311
 312         return (str);
 313 }
 314
 315 char *
 316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 317 {
 318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 319             ha->fw_minor_version,
 320             ha->fw_subminor_version);
 321
 322         if (ha->fw_attributes & BIT_0)
 323                 strcat(str, "[Class 2] ");
 324         if (ha->fw_attributes & BIT_1)
 325                 strcat(str, "[IP] ");
 326         if (ha->fw_attributes & BIT_2)
 327                 strcat(str, "[Multi-ID] ");
 328         if (ha->fw_attributes & BIT_13)
 329                 strcat(str, "[Experimental]");
 330         return str;
 331 }
 332
 333 static inline srb_t *
 334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 336 {
 337         srb_t *sp;
 338
 339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 340         if (!sp)
 341                 return sp;
 342
 343         atomic_set(&sp->ref_count, 1);
 344         sp->ha = ha;
 345         sp->fcport = fcport;
 346         sp->cmd = cmd;
 347         sp->flags = 0;
 348         CMD_SP(cmd) = (void *)sp;
 349         cmd->scsi_done = done;
 350
 351         return sp;
 352 }
 353
 354 static int
 355 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 356 {
 357         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 358         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 359         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 360         srb_t *sp;
 361         int rval;
 362
 363         rval = fc_remote_port_chkready(rport);
 364         if (rval) {
 365                 cmd->result = rval;
 366                 goto qc_fail_command;
 367         }
 368
 369         /* Close window on fcport/rport state-transitioning. */
 370         if (!*(fc_port_t **)rport->dd_data) {
 371                 cmd->result = DID_IMM_RETRY << 16;
 372                 goto qc_fail_command;
 373         }
 374
 375         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 376                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 377                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 378                         cmd->result = DID_NO_CONNECT << 16;
 379                         goto qc_fail_command;
 380                 }
 381                 goto qc_host_busy;
 382         }
 383
 384         spin_unlock_irq(ha->host->host_lock);
 385
 386         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 387         if (!sp)
 388                 goto qc_host_busy_lock;
 389
 390         rval = qla2x00_start_scsi(sp);
 391         if (rval != QLA_SUCCESS)
 392                 goto qc_host_busy_free_sp;
 393
 394         spin_lock_irq(ha->host->host_lock);
 395
 396         return 0;
 397
 398 qc_host_busy_free_sp:
 399         qla2x00_sp_free_dma(ha, sp);
 400         mempool_free(sp, ha->srb_mempool);
 401
 402 qc_host_busy_lock:
 403         spin_lock_irq(ha->host->host_lock);
 404
 405 qc_host_busy:
 406         return SCSI_MLQUEUE_HOST_BUSY;
 407
 408 qc_fail_command:
 409         done(cmd);
 410
 411         return 0;
 412 }
 413
 414
 415 static int
 416 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 417 {
 418         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 419         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 420         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 421         srb_t *sp;
 422         int rval;
 423
 424         rval = fc_remote_port_chkready(rport);
 425         if (rval) {
 426                 cmd->result = rval;
 427                 goto qc24_fail_command;
 428         }
 429
 430         /* Close window on fcport/rport state-transitioning. */
 431         if (!*(fc_port_t **)rport->dd_data) {
 432                 cmd->result = DID_IMM_RETRY << 16;
 433                 goto qc24_fail_command;
 434         }
 435
 436         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 437                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 438                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 439                         cmd->result = DID_NO_CONNECT << 16;
 440                         goto qc24_fail_command;
 441                 }
 442                 goto qc24_host_busy;
 443         }
 444
 445         spin_unlock_irq(ha->host->host_lock);
 446
 447         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 448         if (!sp)
 449                 goto qc24_host_busy_lock;
 450
 451         rval = qla24xx_start_scsi(sp);
 452         if (rval != QLA_SUCCESS)
 453                 goto qc24_host_busy_free_sp;
 454
 455         spin_lock_irq(ha->host->host_lock);
 456
 457         return 0;
 458
 459 qc24_host_busy_free_sp:
 460         qla2x00_sp_free_dma(ha, sp);
 461         mempool_free(sp, ha->srb_mempool);
 462
 463 qc24_host_busy_lock:
 464         spin_lock_irq(ha->host->host_lock);
 465
 466 qc24_host_busy:
 467         return SCSI_MLQUEUE_HOST_BUSY;
 468
 469 qc24_fail_command:
 470         done(cmd);
 471
 472         return 0;
 473 }
 474
 475
 476 /*
 477  * qla2x00_eh_wait_on_command
 478  *    Waits for the command to be returned by the Firmware for some
 479  *    max time.
 480  *
 481  * Input:
 482  *    ha = actual ha whose done queue will contain the command
 483  *            returned by firmware.
 484  *    cmd = Scsi Command to wait on.
 485  *    flag = Abort/Reset(Bus or Device Reset)
 486  *
 487  * Return:
 488  *    Not Found : 0
 489  *    Found : 1
 490  */
 491 static int
 492 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 493 {
 494 #define ABORT_POLLING_PERIOD    1000
 495 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 496         unsigned long wait_iter = ABORT_WAIT_ITER;
 497         int ret = QLA_SUCCESS;
 498
 499         while (CMD_SP(cmd)) {
 500                 msleep(ABORT_POLLING_PERIOD);
 501
 502                 if (--wait_iter)
 503                         break;
 504         }
 505         if (CMD_SP(cmd))
 506                 ret = QLA_FUNCTION_FAILED;
 507
 508         return ret;
 509 }
 510
 511 /*
 512  * qla2x00_wait_for_hba_online
 513  *    Wait till the HBA is online after going through
 514  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 515  *    finally HBA is disabled ie marked offline
 516  *
 517  * Input:
 518  *     ha - pointer to host adapter structure
 519  *
 520  * Note:
 521  *    Does context switching-Release SPIN_LOCK
 522  *    (if any) before calling this routine.
 523  *
 524  * Return:
 525  *    Success (Adapter is online) : 0
 526  *    Failed  (Adapter is offline/disabled) : 1
 527  */
 528 int
 529 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 530 {
 531         int             return_status;
 532         unsigned long   wait_online;
 533
 534         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 535         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 536             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 537             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 538             ha->dpc_active) && time_before(jiffies, wait_online)) {
 539
 540                 msleep(1000);
 541         }
 542         if (ha->flags.online)
 543                 return_status = QLA_SUCCESS;
 544         else
 545                 return_status = QLA_FUNCTION_FAILED;
 546
 547         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 548
 549         return (return_status);
 550 }
 551
 552 /*
 553  * qla2x00_wait_for_loop_ready
 554  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 555  *    to be in LOOP_READY state.
 556  * Input:
 557  *     ha - pointer to host adapter structure
 558  *
 559  * Note:
 560  *    Does context switching-Release SPIN_LOCK
 561  *    (if any) before calling this routine.
 562  *
 563  *
 564  * Return:
 565  *    Success (LOOP_READY) : 0
 566  *    Failed  (LOOP_NOT_READY) : 1
 567  */
 568 static inline int
 569 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 570 {
 571         int      return_status = QLA_SUCCESS;
 572         unsigned long loop_timeout ;
 573
 574         /* wait for 5 min at the max for loop to be ready */
 575         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 576
 577         while ((!atomic_read(&ha->loop_down_timer) &&
 578             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 579             atomic_read(&ha->loop_state) != LOOP_READY) {
 580                 msleep(1000);
 581                 if (time_after_eq(jiffies, loop_timeout)) {
 582                         return_status = QLA_FUNCTION_FAILED;
 583                         break;
 584                 }
 585         }
 586         return (return_status);
 587 }
 588
 589 /**************************************************************************
 590 * qla2xxx_eh_abort
 591 *
 592 * Description:
 593 *    The abort function will abort the specified command.
 594 *
 595 * Input:
 596 *    cmd = Linux SCSI command packet to be aborted.
 597 *
 598 * Returns:
 599 *    Either SUCCESS or FAILED.
 600 *
 601 * Note:
 602 *    Only return FAILED if command not returned by firmware.
 603 **************************************************************************/
 604 int
 605 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 606 {
 607         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 608         srb_t *sp;
 609         int ret, i;
 610         unsigned int id, lun;
 611         unsigned long serial;
 612         unsigned long flags;
 613         int wait = 0;
 614
 615         if (!CMD_SP(cmd))
 616                 return SUCCESS;
 617
 618         ret = SUCCESS;
 619
 620         id = cmd->device->id;
 621         lun = cmd->device->lun;
 622         serial = cmd->serial_number;
 623
 624         /* Check active list for command command. */
 625         spin_lock_irqsave(&ha->hardware_lock, flags);
 626         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 627                 sp = ha->outstanding_cmds[i];
 628
 629                 if (sp == NULL)
 630                         continue;
 631
 632                 if (sp->cmd != cmd)
 633                         continue;
 634
 635                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
 636                     "sp->state=%x\n", __func__, ha->host_no, sp, serial,
 637                     sp->state));
 638                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 639
 640                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 641                 if (ha->isp_ops.abort_command(ha, sp)) {
 642                         DEBUG2(printk("%s(%ld): abort_command "
 643                             "mbx failed.\n", __func__, ha->host_no));
 644                 } else {
 645                         DEBUG3(printk("%s(%ld): abort_command "
 646                             "mbx success.\n", __func__, ha->host_no));
 647                         wait = 1;
 648                 }
 649                 spin_lock_irqsave(&ha->hardware_lock, flags);
 650
 651                 break;
 652         }
 653         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 654
 655         /* Wait for the command to be returned. */
 656         if (wait) {
 657                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 658                         qla_printk(KERN_ERR, ha,
 659                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 660                             "%x.\n", ha->host_no, id, lun, serial, ret);
 661                         ret = FAILED;
 662                 }
 663         }
 664
 665         qla_printk(KERN_INFO, ha,
 666             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 667             ha->host_no, id, lun, wait, serial, ret);
 668
 669         return ret;
 670 }
 671
 672 /**************************************************************************
 673 * qla2x00_eh_wait_for_pending_target_commands
 674 *
 675 * Description:
 676 *    Waits for all the commands to come back from the specified target.
 677 *
 678 * Input:
 679 *    ha - pointer to scsi_qla_host structure.
 680 *    t  - target
 681 * Returns:
 682 *    Either SUCCESS or FAILED.
 683 *
 684 * Note:
 685 **************************************************************************/
 686 static int
 687 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 688 {
 689         int     cnt;
 690         int     status;
 691         srb_t           *sp;
 692         struct scsi_cmnd *cmd;
 693         unsigned long flags;
 694
 695         status = 0;
 696
 697         /*
 698          * Waiting for all commands for the designated target in the active
 699          * array
 700          */
 701         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 702                 spin_lock_irqsave(&ha->hardware_lock, flags);
 703                 sp = ha->outstanding_cmds[cnt];
 704                 if (sp) {
 705                         cmd = sp->cmd;
 706                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 707                         if (cmd->device->id == t) {
 708                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 709                                         status = 1;
 710                                         break;
 711                                 }
 712                         }
 713                 } else {
 714                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 715                 }
 716         }
 717         return (status);
 718 }
 719
 720
 721 /**************************************************************************
 722 * qla2xxx_eh_device_reset
 723 *
 724 * Description:
 725 *    The device reset function will reset the target and abort any
 726 *    executing commands.
 727 *
 728 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 729 *          attempt to use this value, even if you determine it is
 730 *          non-null.
 731 *
 732 * Input:
 733 *    cmd = Linux SCSI command packet of the command that cause the
 734 *          bus device reset.
 735 *
 736 * Returns:
 737 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 738 *
 739 **************************************************************************/
 740 int
 741 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 742 {
 743         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 744         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 745         srb_t *sp;
 746         int ret;
 747         unsigned int id, lun;
 748         unsigned long serial;
 749
 750         ret = FAILED;
 751
 752         id = cmd->device->id;
 753         lun = cmd->device->lun;
 754         serial = cmd->serial_number;
 755
 756         sp = (srb_t *) CMD_SP(cmd);
 757         if (!sp || !fcport)
 758                 return ret;
 759
 760         qla_printk(KERN_INFO, ha,
 761             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 762
 763         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 764                 goto eh_dev_reset_done;
 765
 766         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 767                 if (qla2x00_device_reset(ha, fcport) == 0)
 768                         ret = SUCCESS;
 769
 770 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 771                 if (ret == SUCCESS) {
 772                         if (fcport->flags & FC_FABRIC_DEVICE) {
 773                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 774                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 775                         }
 776                 }
 777 #endif
 778         } else {
 779                 DEBUG2(printk(KERN_INFO
 780                     "%s failed: loop not ready\n",__func__);)
 781         }
 782
 783         if (ret == FAILED) {
 784                 DEBUG3(printk("%s(%ld): device reset failed\n",
 785                     __func__, ha->host_no));
 786                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 787                     __func__);
 788
 789                 goto eh_dev_reset_done;
 790         }
 791
 792         /* Flush outstanding commands. */
 793         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 794                 ret = FAILED;
 795         if (ret == FAILED) {
 796                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 797                     __func__, ha->host_no));
 798                 qla_printk(KERN_INFO, ha,
 799                     "%s: failed while waiting for commands\n", __func__);
 800         } else
 801                 qla_printk(KERN_INFO, ha,
 802                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 803                     id, lun);
 804  eh_dev_reset_done:
 805         return ret;
 806 }
 807
 808 /**************************************************************************
 809 * qla2x00_eh_wait_for_pending_commands
 810 *
 811 * Description:
 812 *    Waits for all the commands to come back from the specified host.
 813 *
 814 * Input:
 815 *    ha - pointer to scsi_qla_host structure.
 816 *
 817 * Returns:
 818 *    1 : SUCCESS
 819 *    0 : FAILED
 820 *
 821 * Note:
 822 **************************************************************************/
 823 static int
 824 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 825 {
 826         int     cnt;
 827         int     status;
 828         srb_t           *sp;
 829         struct scsi_cmnd *cmd;
 830         unsigned long flags;
 831
 832         status = 1;
 833
 834         /*
 835          * Waiting for all commands for the designated target in the active
 836          * array
 837          */
 838         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 839                 spin_lock_irqsave(&ha->hardware_lock, flags);
 840                 sp = ha->outstanding_cmds[cnt];
 841                 if (sp) {
 842                         cmd = sp->cmd;
 843                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 844                         status = qla2x00_eh_wait_on_command(ha, cmd);
 845                         if (status == 0)
 846                                 break;
 847                 }
 848                 else {
 849                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 850                 }
 851         }
 852         return (status);
 853 }
 854
 855
 856 /**************************************************************************
 857 * qla2xxx_eh_bus_reset
 858 *
 859 * Description:
 860 *    The bus reset function will reset the bus and abort any executing
 861 *    commands.
 862 *
 863 * Input:
 864 *    cmd = Linux SCSI command packet of the command that cause the
 865 *          bus reset.
 866 *
 867 * Returns:
 868 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 869 *
 870 **************************************************************************/
 871 int
 872 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 873 {
 874         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 875         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 876         srb_t *sp;
 877         int ret;
 878         unsigned int id, lun;
 879         unsigned long serial;
 880
 881         ret = FAILED;
 882
 883         id = cmd->device->id;
 884         lun = cmd->device->lun;
 885         serial = cmd->serial_number;
 886
 887         sp = (srb_t *) CMD_SP(cmd);
 888         if (!sp || !fcport)
 889                 return ret;
 890
 891         qla_printk(KERN_INFO, ha,
 892             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 893
 894         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 895                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 896                 goto eh_bus_reset_done;
 897         }
 898
 899         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 900                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 901                         ret = SUCCESS;
 902         }
 903         if (ret == FAILED)
 904                 goto eh_bus_reset_done;
 905
 906         /* Flush outstanding commands. */
 907         if (!qla2x00_eh_wait_for_pending_commands(ha))
 908                 ret = FAILED;
 909
 910 eh_bus_reset_done:
 911         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 912             (ret == FAILED) ? "failed" : "succeded");
 913
 914         return ret;
 915 }
 916
 917 /**************************************************************************
 918 * qla2xxx_eh_host_reset
 919 *
 920 * Description:
 921 *    The reset function will reset the Adapter.
 922 *
 923 * Input:
 924 *      cmd = Linux SCSI command packet of the command that cause the
 925 *            adapter reset.
 926 *
 927 * Returns:
 928 *      Either SUCCESS or FAILED.
 929 *
 930 * Note:
 931 **************************************************************************/
 932 int
 933 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 934 {
 935         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 936         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 937         srb_t *sp;
 938         int ret;
 939         unsigned int id, lun;
 940         unsigned long serial;
 941
 942         ret = FAILED;
 943
 944         id = cmd->device->id;
 945         lun = cmd->device->lun;
 946         serial = cmd->serial_number;
 947
 948         sp = (srb_t *) CMD_SP(cmd);
 949         if (!sp || !fcport)
 950                 return ret;
 951
 952         qla_printk(KERN_INFO, ha,
 953             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 954
 955         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 956                 goto eh_host_reset_lock;
 957
 958         /*
 959          * Fixme-may be dpc thread is active and processing
 960          * loop_resync,so wait a while for it to
 961          * be completed and then issue big hammer.Otherwise
 962          * it may cause I/O failure as big hammer marks the
 963          * devices as lost kicking of the port_down_timer
 964          * while dpc is stuck for the mailbox to complete.
 965          */
 966         qla2x00_wait_for_loop_ready(ha);
 967         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 968         if (qla2x00_abort_isp(ha)) {
 969                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 970                 /* failed. schedule dpc to try */
 971                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 972
 973                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 974                         goto eh_host_reset_lock;
 975         }
 976         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 977
 978         /* Waiting for our command in done_queue to be returned to OS.*/
 979         if (qla2x00_eh_wait_for_pending_commands(ha))
 980                 ret = SUCCESS;
 981
 982 eh_host_reset_lock:
 983         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 984             (ret == FAILED) ? "failed" : "succeded");
 985
 986         return ret;
 987 }
 988
 989 /*
 990 * qla2x00_loop_reset
 991 *      Issue loop reset.
 992 *
 993 * Input:
 994 *      ha = adapter block pointer.
 995 *
 996 * Returns:
 997 *      0 = success
 998 */
 999 static int
1000 qla2x00_loop_reset(scsi_qla_host_t *ha)
1001 {
1002         int status = QLA_SUCCESS;
1003         struct fc_port *fcport;
1004
1005         if (ha->flags.enable_lip_reset) {
1006                 status = qla2x00_lip_reset(ha);
1007         }
1008
1009         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1010                 list_for_each_entry(fcport, &ha->fcports, list) {
1011                         if (fcport->port_type != FCT_TARGET)
1012                                 continue;
1013
1014                         status = qla2x00_device_reset(ha, fcport);
1015                         if (status != QLA_SUCCESS)
1016                                 break;
1017                 }
1018         }
1019
1020         if (status == QLA_SUCCESS &&
1021                 ((!ha->flags.enable_target_reset &&
1022                   !ha->flags.enable_lip_reset) ||
1023                 ha->flags.enable_lip_full_login)) {
1024
1025                 status = qla2x00_full_login_lip(ha);
1026         }
1027
1028         /* Issue marker command only when we are going to start the I/O */
1029         ha->marker_needed = 1;
1030
1031         if (status) {
1032                 /* Empty */
1033                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1034                                 __func__,
1035                                 ha->host_no);)
1036         } else {
1037                 /* Empty */
1038                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1039                                 __func__,
1040                                 ha->host_no);)
1041         }
1042
1043         return(status);
1044 }
1045
1046 /*
1047  * qla2x00_device_reset
1048  *      Issue bus device reset message to the target.
1049  *
1050  * Input:
1051  *      ha = adapter block pointer.
1052  *      t = SCSI ID.
1053  *      TARGET_QUEUE_LOCK must be released.
1054  *      ADAPTER_STATE_LOCK must be released.
1055  *
1056  * Context:
1057  *      Kernel context.
1058  */
1059 static int
1060 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1061 {
1062         /* Abort Target command will clear Reservation */
1063         return ha->isp_ops.abort_target(reset_fcport);
1064 }
1065
1066 static int
1067 qla2xxx_slave_alloc(struct scsi_device *sdev)
1068 {
1069         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1070
1071         if (!rport || fc_remote_port_chkready(rport))
1072                 return -ENXIO;
1073
1074         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1075
1076         return 0;
1077 }
1078
1079 static int
1080 qla2xxx_slave_configure(struct scsi_device *sdev)
1081 {
1082         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1083         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1084
1085         if (sdev->tagged_supported)
1086                 scsi_activate_tcq(sdev, 32);
1087         else
1088                 scsi_deactivate_tcq(sdev, 32);
1089
1090         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1091
1092         return 0;
1093 }
1094
1095 static void
1096 qla2xxx_slave_destroy(struct scsi_device *sdev)
1097 {
1098         sdev->hostdata = NULL;
1099 }
1100
1101 static int
1102 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1103 {
1104         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1105         return sdev->queue_depth;
1106 }
1107
1108 static int
1109 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1110 {
1111         if (sdev->tagged_supported) {
1112                 scsi_set_tag_type(sdev, tag_type);
1113                 if (tag_type)
1114                         scsi_activate_tcq(sdev, sdev->queue_depth);
1115                 else
1116                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1117         } else
1118                 tag_type = 0;
1119
1120         return tag_type;
1121 }
1122
1123 /**
1124  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1125  * @ha: HA context
1126  *
1127  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1128  * supported addressing method.
1129  */
1130 static void
1131 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1132 {
1133         /* Assume a 32bit DMA mask. */
1134         ha->flags.enable_64bit_addressing = 0;
1135
1136         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1137                 /* Any upper-dword bits set? */
1138                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1139                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1140                         /* Ok, a 64bit DMA mask is applicable. */
1141                         ha->flags.enable_64bit_addressing = 1;
1142                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1143                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1144                         return;
1145                 }
1146         }
1147
1148         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1149         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1150 }
1151
1152 static inline void
1153 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1154 {
1155         ha->device_type = DT_EXTENDED_IDS;
1156         switch (ha->pdev->device) {
1157         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1158                 ha->device_type |= DT_ISP2100;
1159                 ha->device_type &= ~DT_EXTENDED_IDS;
1160                 break;
1161         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1162                 ha->device_type |= DT_ISP2200;
1163                 ha->device_type &= ~DT_EXTENDED_IDS;
1164                 break;
1165         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1166                 ha->device_type |= DT_ISP2300;
1167                 ha->device_type |= DT_ZIO_SUPPORTED;
1168                 break;
1169         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1170                 ha->device_type |= DT_ISP2312;
1171                 ha->device_type |= DT_ZIO_SUPPORTED;
1172                 break;
1173         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1174                 ha->device_type |= DT_ISP2322;
1175                 ha->device_type |= DT_ZIO_SUPPORTED;
1176                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1177                     ha->pdev->subsystem_device == 0x0170)
1178                         ha->device_type |= DT_OEM_001;
1179                 break;
1180         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1181                 ha->device_type |= DT_ISP6312;
1182                 break;
1183         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1184                 ha->device_type |= DT_ISP6322;
1185                 break;
1186         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1187                 ha->device_type |= DT_ISP2422;
1188                 ha->device_type |= DT_ZIO_SUPPORTED;
1189                 break;
1190         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1191                 ha->device_type |= DT_ISP2432;
1192                 ha->device_type |= DT_ZIO_SUPPORTED;
1193                 break;
1194         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1195                 ha->device_type |= DT_ISP5422;
1196                 break;
1197         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1198                 ha->device_type |= DT_ISP5432;
1199                 break;
1200         }
1201 }
1202
1203 static int
1204 qla2x00_iospace_config(scsi_qla_host_t *ha)
1205 {
1206         unsigned long   pio, pio_len, pio_flags;
1207         unsigned long   mmio, mmio_len, mmio_flags;
1208
1209         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1210         pio = pci_resource_start(ha->pdev, 0);
1211         pio_len = pci_resource_len(ha->pdev, 0);
1212         pio_flags = pci_resource_flags(ha->pdev, 0);
1213         if (pio_flags & IORESOURCE_IO) {
1214                 if (pio_len < MIN_IOBASE_LEN) {
1215                         qla_printk(KERN_WARNING, ha,
1216                             "Invalid PCI I/O region size (%s)...\n",
1217                                 pci_name(ha->pdev));
1218                         pio = 0;
1219                 }
1220         } else {
1221                 qla_printk(KERN_WARNING, ha,
1222                     "region #0 not a PIO resource (%s)...\n",
1223                     pci_name(ha->pdev));
1224                 pio = 0;
1225         }
1226
1227         /* Use MMIO operations for all accesses. */
1228         mmio = pci_resource_start(ha->pdev, 1);
1229         mmio_len = pci_resource_len(ha->pdev, 1);
1230         mmio_flags = pci_resource_flags(ha->pdev, 1);
1231
1232         if (!(mmio_flags & IORESOURCE_MEM)) {
1233                 qla_printk(KERN_ERR, ha,
1234                     "region #0 not an MMIO resource (%s), aborting\n",
1235                     pci_name(ha->pdev));
1236                 goto iospace_error_exit;
1237         }
1238         if (mmio_len < MIN_IOBASE_LEN) {
1239                 qla_printk(KERN_ERR, ha,
1240                     "Invalid PCI mem region size (%s), aborting\n",
1241                         pci_name(ha->pdev));
1242                 goto iospace_error_exit;
1243         }
1244
1245         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1246                 qla_printk(KERN_WARNING, ha,
1247                     "Failed to reserve PIO/MMIO regions (%s)\n",
1248                     pci_name(ha->pdev));
1249
1250                 goto iospace_error_exit;
1251         }
1252
1253         ha->pio_address = pio;
1254         ha->pio_length = pio_len;
1255         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1256         if (!ha->iobase) {
1257                 qla_printk(KERN_ERR, ha,
1258                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1259
1260                 goto iospace_error_exit;
1261         }
1262
1263         return (0);
1264
1265 iospace_error_exit:
1266         return (-ENOMEM);
1267 }
1268
1269 static void
1270 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1271 {
1272         unsigned long flags = 0;
1273         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1274
1275         spin_lock_irqsave(&ha->hardware_lock, flags);
1276         ha->interrupts_on = 1;
1277         /* enable risc and host interrupts */
1278         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1279         RD_REG_WORD(&reg->ictrl);
1280         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1281
1282 }
1283
1284 static void
1285 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1286 {
1287         unsigned long flags = 0;
1288         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1289
1290         spin_lock_irqsave(&ha->hardware_lock, flags);
1291         ha->interrupts_on = 0;
1292         /* disable risc and host interrupts */
1293         WRT_REG_WORD(&reg->ictrl, 0);
1294         RD_REG_WORD(&reg->ictrl);
1295         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1296 }
1297
1298 static void
1299 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1300 {
1301         unsigned long flags = 0;
1302         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1303
1304         spin_lock_irqsave(&ha->hardware_lock, flags);
1305         ha->interrupts_on = 1;
1306         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1307         RD_REG_DWORD(&reg->ictrl);
1308         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1309 }
1310
1311 static void
1312 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1313 {
1314         unsigned long flags = 0;
1315         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1316
1317         spin_lock_irqsave(&ha->hardware_lock, flags);
1318         ha->interrupts_on = 0;
1319         WRT_REG_DWORD(&reg->ictrl, 0);
1320         RD_REG_DWORD(&reg->ictrl);
1321         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1322 }
1323
1324 /*
1325  * PCI driver interface
1326  */
1327 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1328 {
1329         int     ret = -ENODEV;
1330         device_reg_t __iomem *reg;
1331         struct Scsi_Host *host;
1332         scsi_qla_host_t *ha;
1333         unsigned long   flags = 0;
1334         unsigned long   wait_switch = 0;
1335         char pci_info[20];
1336         char fw_str[30];
1337         fc_port_t *fcport;
1338         struct scsi_host_template *sht;
1339
1340         if (pci_enable_device(pdev))
1341                 goto probe_out;
1342
1343         sht = &qla2x00_driver_template;
1344         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1345             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1346                 sht = &qla24xx_driver_template;
1347         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1348         if (host == NULL) {
1349                 printk(KERN_WARNING
1350                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1351                 goto probe_disable_device;
1352         }
1353
1354         /* Clear our data area */
1355         ha = (scsi_qla_host_t *)host->hostdata;
1356         memset(ha, 0, sizeof(scsi_qla_host_t));
1357
1358         ha->pdev = pdev;
1359         ha->host = host;
1360         ha->host_no = host->host_no;
1361         ha->brd_info = brd_info;
1362         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1363
1364         /* Set ISP-type information. */
1365         qla2x00_set_isp_flags(ha);
1366
1367         /* Configure PCI I/O space */
1368         ret = qla2x00_iospace_config(ha);
1369         if (ret)
1370                 goto probe_failed;
1371
1372         qla_printk(KERN_INFO, ha,
1373             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1374             ha->iobase);
1375
1376         spin_lock_init(&ha->hardware_lock);
1377
1378         ha->prev_topology = 0;
1379         ha->ports = MAX_BUSES;
1380         ha->init_cb_size = sizeof(init_cb_t);
1381         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1382         ha->link_data_rate = LDR_UNKNOWN;
1383         ha->optrom_size = OPTROM_SIZE_2300;
1384
1385         /* Assign ISP specific operations. */
1386         ha->isp_ops.pci_config          = qla2100_pci_config;
1387         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1388         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1389         ha->isp_ops.config_rings        = qla2x00_config_rings;
1390         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1391         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1392         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1393         ha->isp_ops.load_risc           = qla2x00_load_risc;
1394         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1395         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1396         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1397         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1398         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1399         ha->isp_ops.abort_command       = qla2x00_abort_command;
1400         ha->isp_ops.abort_target        = qla2x00_abort_target;
1401         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1402         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1403         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1404         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1405         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1406         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1407         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1408         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1409         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1410         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1411         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1412         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1413         if (IS_QLA2100(ha)) {
1414                 host->max_id = MAX_TARGETS_2100;
1415                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1416                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1417                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1418                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1419                 host->sg_tablesize = 32;
1420                 ha->gid_list_info_size = 4;
1421         } else if (IS_QLA2200(ha)) {
1422                 host->max_id = MAX_TARGETS_2200;
1423                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1424                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1425                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1426                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1427                 ha->gid_list_info_size = 4;
1428         } else if (IS_QLA23XX(ha)) {
1429                 host->max_id = MAX_TARGETS_2200;
1430                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1431                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1432                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1433                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1434                 ha->isp_ops.pci_config = qla2300_pci_config;
1435                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1436                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1437                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1438                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1439                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1440                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1441                 ha->gid_list_info_size = 6;
1442                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1443                         ha->optrom_size = OPTROM_SIZE_2322;
1444         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1445                 host->max_id = MAX_TARGETS_2200;
1446                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1447                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1448                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1449                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1450                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1451                 ha->mgmt_svr_loop_id = 10;
1452                 ha->isp_ops.pci_config = qla24xx_pci_config;
1453                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1454                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1455                 ha->isp_ops.config_rings = qla24xx_config_rings;
1456                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1457                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1458                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1459                 ha->isp_ops.load_risc = qla24xx_load_risc;
1460 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1461                 if (ql2xfwloadflash)
1462                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1463 #endif
1464                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1465                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1466                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1467                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1468                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1469                 ha->isp_ops.abort_command = qla24xx_abort_command;
1470                 ha->isp_ops.abort_target = qla24xx_abort_target;
1471                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1472                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1473                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1474                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1475                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1476                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1477                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1478                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1479                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1480                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1481                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1482                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1483                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1484                 ha->gid_list_info_size = 8;
1485                 ha->optrom_size = OPTROM_SIZE_24XX;
1486         }
1487         host->can_queue = ha->request_q_length + 128;
1488
1489         /* load the F/W, read paramaters, and init the H/W */
1490         ha->instance = num_hosts;
1491
1492         init_MUTEX(&ha->mbx_cmd_sem);
1493         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1494
1495         INIT_LIST_HEAD(&ha->list);
1496         INIT_LIST_HEAD(&ha->fcports);
1497         INIT_LIST_HEAD(&ha->rscn_fcports);
1498
1499         /*
1500          * These locks are used to prevent more than one CPU
1501          * from modifying the queue at the same time. The
1502          * higher level "host_lock" will reduce most
1503          * contention for these locks.
1504          */
1505         spin_lock_init(&ha->mbx_reg_lock);
1506
1507         qla2x00_config_dma_addressing(ha);
1508         if (qla2x00_mem_alloc(ha)) {
1509                 qla_printk(KERN_WARNING, ha,
1510                     "[ERROR] Failed to allocate memory for adapter\n");
1511
1512                 ret = -ENOMEM;
1513                 goto probe_failed;
1514         }
1515
1516         if (qla2x00_initialize_adapter(ha) &&
1517             !(ha->device_flags & DFLG_NO_CABLE)) {
1518
1519                 qla_printk(KERN_WARNING, ha,
1520                     "Failed to initialize adapter\n");
1521
1522                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1523                     "Adapter flags %x.\n",
1524                     ha->host_no, ha->device_flags));
1525
1526                 ret = -ENODEV;
1527                 goto probe_failed;
1528         }
1529
1530         /*
1531          * Startup the kernel thread for this host adapter
1532          */
1533         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1534                         "%s_dpc", ha->host_str);
1535         if (IS_ERR(ha->dpc_thread)) {
1536                 qla_printk(KERN_WARNING, ha,
1537                     "Unable to start DPC thread!\n");
1538                 ret = PTR_ERR(ha->dpc_thread);
1539                 goto probe_failed;
1540         }
1541
1542         host->this_id = 255;
1543         host->cmd_per_lun = 3;
1544         host->unique_id = ha->instance;
1545         host->max_cmd_len = MAX_CMDSZ;
1546         host->max_channel = ha->ports - 1;
1547         host->max_lun = MAX_LUNS;
1548         host->transportt = qla2xxx_transport_template;
1549
1550         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1551             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1552         if (ret) {
1553                 qla_printk(KERN_WARNING, ha,
1554                     "Failed to reserve interrupt %d already in use.\n",
1555                     pdev->irq);
1556                 goto probe_failed;
1557         }
1558         host->irq = pdev->irq;
1559
1560         /* Initialized the timer */
1561         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1562
1563         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1564             ha->host_no, ha));
1565
1566         ha->isp_ops.disable_intrs(ha);
1567
1568         spin_lock_irqsave(&ha->hardware_lock, flags);
1569         reg = ha->iobase;
1570         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1571                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1572                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1573         } else {
1574                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1575                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1576                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1577
1578                 /* Enable proper parity */
1579                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1580                         if (IS_QLA2300(ha))
1581                                 /* SRAM parity */
1582                                 WRT_REG_WORD(&reg->isp.hccr,
1583                                     (HCCR_ENABLE_PARITY + 0x1));
1584                         else
1585                                 /* SRAM, Instruction RAM and GP RAM parity */
1586                                 WRT_REG_WORD(&reg->isp.hccr,
1587                                     (HCCR_ENABLE_PARITY + 0x7));
1588                 }
1589         }
1590         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1591
1592         ha->isp_ops.enable_intrs(ha);
1593
1594         /* v2.19.5b6 */
1595         /*
1596          * Wait around max loop_reset_delay secs for the devices to come
1597          * on-line. We don't want Linux scanning before we are ready.
1598          *
1599          */
1600         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1601             time_before(jiffies,wait_switch) &&
1602              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1603              && (ha->device_flags & SWITCH_FOUND) ;) {
1604
1605                 qla2x00_check_fabric_devices(ha);
1606
1607                 msleep(10);
1608         }
1609
1610         pci_set_drvdata(pdev, ha);
1611         ha->flags.init_done = 1;
1612         num_hosts++;
1613
1614         ret = scsi_add_host(host, &pdev->dev);
1615         if (ret)
1616                 goto probe_failed;
1617
1618         qla2x00_alloc_sysfs_attr(ha);
1619
1620         qla2x00_init_host_attr(ha);
1621
1622         qla_printk(KERN_INFO, ha, "\n"
1623             " QLogic Fibre Channel HBA Driver: %s\n"
1624             "  QLogic %s - %s\n"
1625             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1626             qla2x00_version_str, ha->model_number,
1627             ha->model_desc ? ha->model_desc: "", pdev->device,
1628             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1629             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1630             ha->isp_ops.fw_version_str(ha, fw_str));
1631
1632         /* Go with fc_rport registration. */
1633         list_for_each_entry(fcport, &ha->fcports, list)
1634                 qla2x00_reg_remote_port(ha, fcport);
1635
1636         return 0;
1637
1638 probe_failed:
1639         qla2x00_free_device(ha);
1640
1641         scsi_host_put(host);
1642
1643 probe_disable_device:
1644         pci_disable_device(pdev);
1645
1646 probe_out:
1647         return ret;
1648 }
1649 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1650
1651 void qla2x00_remove_one(struct pci_dev *pdev)
1652 {
1653         scsi_qla_host_t *ha;
1654
1655         ha = pci_get_drvdata(pdev);
1656
1657         qla2x00_free_sysfs_attr(ha);
1658
1659         fc_remove_host(ha->host);
1660
1661         scsi_remove_host(ha->host);
1662
1663         qla2x00_free_device(ha);
1664
1665         scsi_host_put(ha->host);
1666
1667         pci_set_drvdata(pdev, NULL);
1668 }
1669 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1670
1671 static void
1672 qla2x00_free_device(scsi_qla_host_t *ha)
1673 {
1674         /* Abort any outstanding IO descriptors. */
1675         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1676                 qla2x00_cancel_io_descriptors(ha);
1677
1678         /* Disable timer */
1679         if (ha->timer_active)
1680                 qla2x00_stop_timer(ha);
1681
1682         /* Kill the kernel thread for this host */
1683         if (ha->dpc_thread) {
1684                 struct task_struct *t = ha->dpc_thread;
1685
1686                 /*
1687                  * qla2xxx_wake_dpc checks for ->dpc_thread
1688                  * so we need to zero it out.
1689                  */
1690                 ha->dpc_thread = NULL;
1691                 kthread_stop(t);
1692         }
1693
1694         /* Stop currently executing firmware. */
1695         qla2x00_stop_firmware(ha);
1696
1697         /* turn-off interrupts on the card */
1698         if (ha->interrupts_on)
1699                 ha->isp_ops.disable_intrs(ha);
1700
1701         qla2x00_mem_free(ha);
1702
1703         ha->flags.online = 0;
1704
1705         /* Detach interrupts */
1706         if (ha->host->irq)
1707                 free_irq(ha->host->irq, ha);
1708
1709         /* release io space registers  */
1710         if (ha->iobase)
1711                 iounmap(ha->iobase);
1712         pci_release_regions(ha->pdev);
1713
1714         pci_disable_device(ha->pdev);
1715 }
1716
1717 static inline void
1718 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1719     int defer)
1720 {
1721         unsigned long flags;
1722         struct fc_rport *rport;
1723
1724         if (!fcport->rport)
1725                 return;
1726
1727         rport = fcport->rport;
1728         if (defer) {
1729                 spin_lock_irqsave(&fcport->rport_lock, flags);
1730                 fcport->drport = rport;
1731                 fcport->rport = NULL;
1732                 *(fc_port_t **)rport->dd_data = NULL;
1733                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1734                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1735         } else {
1736                 spin_lock_irqsave(&fcport->rport_lock, flags);
1737                 fcport->rport = NULL;
1738                 *(fc_port_t **)rport->dd_data = NULL;
1739                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1740                 fc_remote_port_delete(rport);
1741         }
1742 }
1743
1744 /*
1745  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1746  *
1747  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1748  *
1749  * Return: None.
1750  *
1751  * Context:
1752  */
1753 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1754     int do_login, int defer)
1755 {
1756         if (atomic_read(&fcport->state) == FCS_ONLINE)
1757                 qla2x00_schedule_rport_del(ha, fcport, defer);
1758
1759         /*
1760          * We may need to retry the login, so don't change the state of the
1761          * port but do the retries.
1762          */
1763         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1764                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1765
1766         if (!do_login)
1767                 return;
1768
1769         if (fcport->login_retry == 0) {
1770                 fcport->login_retry = ha->login_retry_count;
1771                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1772
1773                 DEBUG(printk("scsi(%ld): Port login retry: "
1774                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1775                     "id = 0x%04x retry cnt=%d\n",
1776                     ha->host_no,
1777                     fcport->port_name[0],
1778                     fcport->port_name[1],
1779                     fcport->port_name[2],
1780                     fcport->port_name[3],
1781                     fcport->port_name[4],
1782                     fcport->port_name[5],
1783                     fcport->port_name[6],
1784                     fcport->port_name[7],
1785                     fcport->loop_id,
1786                     fcport->login_retry));
1787         }
1788 }
1789
1790 /*
1791  * qla2x00_mark_all_devices_lost
1792  *      Updates fcport state when device goes offline.
1793  *
1794  * Input:
1795  *      ha = adapter block pointer.
1796  *      fcport = port structure pointer.
1797  *
1798  * Return:
1799  *      None.
1800  *
1801  * Context:
1802  */
1803 void
1804 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1805 {
1806         fc_port_t *fcport;
1807
1808         list_for_each_entry(fcport, &ha->fcports, list) {
1809                 if (fcport->port_type != FCT_TARGET)
1810                         continue;
1811
1812                 /*
1813                  * No point in marking the device as lost, if the device is
1814                  * already DEAD.
1815                  */
1816                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1817                         continue;
1818                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1819                         qla2x00_schedule_rport_del(ha, fcport, defer);
1820                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1821         }
1822
1823         if (defer)
1824                 qla2xxx_wake_dpc(ha);
1825 }
1826
1827 /*
1828 * qla2x00_mem_alloc
1829 *      Allocates adapter memory.
1830 *
1831 * Returns:
1832 *      0  = success.
1833 *      1  = failure.
1834 */
1835 static uint8_t
1836 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1837 {
1838         char    name[16];
1839         uint8_t   status = 1;
1840         int     retry= 10;
1841
1842         do {
1843                 /*
1844                  * This will loop only once if everything goes well, else some
1845                  * number of retries will be performed to get around a kernel
1846                  * bug where available mem is not allocated until after a
1847                  * little delay and a retry.
1848                  */
1849                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1850                     (ha->request_q_length + 1) * sizeof(request_t),
1851                     &ha->request_dma, GFP_KERNEL);
1852                 if (ha->request_ring == NULL) {
1853                         qla_printk(KERN_WARNING, ha,
1854                             "Memory Allocation failed - request_ring\n");
1855
1856                         qla2x00_mem_free(ha);
1857                         msleep(100);
1858
1859                         continue;
1860                 }
1861
1862                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1863                     (ha->response_q_length + 1) * sizeof(response_t),
1864                     &ha->response_dma, GFP_KERNEL);
1865                 if (ha->response_ring == NULL) {
1866                         qla_printk(KERN_WARNING, ha,
1867                             "Memory Allocation failed - response_ring\n");
1868
1869                         qla2x00_mem_free(ha);
1870                         msleep(100);
1871
1872                         continue;
1873                 }
1874
1875                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1876                     &ha->gid_list_dma, GFP_KERNEL);
1877                 if (ha->gid_list == NULL) {
1878                         qla_printk(KERN_WARNING, ha,
1879                             "Memory Allocation failed - gid_list\n");
1880
1881                         qla2x00_mem_free(ha);
1882                         msleep(100);
1883
1884                         continue;
1885                 }
1886
1887                 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1888                     sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1889                 if (ha->rlc_rsp == NULL) {
1890                         qla_printk(KERN_WARNING, ha,
1891                                 "Memory Allocation failed - rlc");
1892
1893                         qla2x00_mem_free(ha);
1894                         msleep(100);
1895
1896                         continue;
1897                 }
1898
1899                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1900                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1901                     DMA_POOL_SIZE, 8, 0);
1902                 if (ha->s_dma_pool == NULL) {
1903                         qla_printk(KERN_WARNING, ha,
1904                             "Memory Allocation failed - s_dma_pool\n");
1905
1906                         qla2x00_mem_free(ha);
1907                         msleep(100);
1908
1909                         continue;
1910                 }
1911
1912                 /* get consistent memory allocated for init control block */
1913                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1914                     &ha->init_cb_dma);
1915                 if (ha->init_cb == NULL) {
1916                         qla_printk(KERN_WARNING, ha,
1917                             "Memory Allocation failed - init_cb\n");
1918
1919                         qla2x00_mem_free(ha);
1920                         msleep(100);
1921
1922                         continue;
1923                 }
1924                 memset(ha->init_cb, 0, ha->init_cb_size);
1925
1926                 /* Get consistent memory allocated for Get Port Database cmd */
1927                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1928                     &ha->iodesc_pd_dma);
1929                 if (ha->iodesc_pd == NULL) {
1930                         /* error */
1931                         qla_printk(KERN_WARNING, ha,
1932                             "Memory Allocation failed - iodesc_pd\n");
1933
1934                         qla2x00_mem_free(ha);
1935                         msleep(100);
1936
1937                         continue;
1938                 }
1939                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1940
1941                 /* Allocate ioctl related memory. */
1942                 if (qla2x00_alloc_ioctl_mem(ha)) {
1943                         qla_printk(KERN_WARNING, ha,
1944                             "Memory Allocation failed - ioctl_mem\n");
1945
1946                         qla2x00_mem_free(ha);
1947                         msleep(100);
1948
1949                         continue;
1950                 }
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
2016                 /* Done all allocations without any error. */
2017                 status = 0;
2018
2019         } while (retry-- && status != 0);
2020
2021         if (status) {
2022                 printk(KERN_WARNING
2023                         "%s(): **** FAILED ****\n", __func__);
2024         }
2025
2026         return(status);
2027 }
2028
2029 /*
2030 * qla2x00_mem_free
2031 *      Frees all adapter allocated memory.
2032 *
2033 * Input:
2034 *      ha = adapter block pointer.
2035 */
2036 static void
2037 qla2x00_mem_free(scsi_qla_host_t *ha)
2038 {
2039         struct list_head        *fcpl, *fcptemp;
2040         fc_port_t       *fcport;
2041
2042         if (ha == NULL) {
2043                 /* error */
2044                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2045                 return;
2046         }
2047
2048         /* free ioctl memory */
2049         qla2x00_free_ioctl_mem(ha);
2050
2051         /* free sp pool */
2052         qla2x00_free_sp_pool(ha);
2053
2054         if (ha->sns_cmd)
2055                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2056                     ha->sns_cmd, ha->sns_cmd_dma);
2057
2058         if (ha->ct_sns)
2059                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2060                     ha->ct_sns, ha->ct_sns_dma);
2061
2062         if (ha->ms_iocb)
2063                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2064
2065         if (ha->iodesc_pd)
2066                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2067
2068         if (ha->init_cb)
2069                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2070
2071         if (ha->s_dma_pool)
2072                 dma_pool_destroy(ha->s_dma_pool);
2073
2074         if (ha->rlc_rsp)
2075                 dma_free_coherent(&ha->pdev->dev,
2076                     sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2077                     ha->rlc_rsp_dma);
2078
2079         if (ha->gid_list)
2080                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2081                     ha->gid_list_dma);
2082
2083         if (ha->response_ring)
2084                 dma_free_coherent(&ha->pdev->dev,
2085                     (ha->response_q_length + 1) * sizeof(response_t),
2086                     ha->response_ring, ha->response_dma);
2087
2088         if (ha->request_ring)
2089                 dma_free_coherent(&ha->pdev->dev,
2090                     (ha->request_q_length + 1) * sizeof(request_t),
2091                     ha->request_ring, ha->request_dma);
2092
2093         ha->sns_cmd = NULL;
2094         ha->sns_cmd_dma = 0;
2095         ha->ct_sns = NULL;
2096         ha->ct_sns_dma = 0;
2097         ha->ms_iocb = NULL;
2098         ha->ms_iocb_dma = 0;
2099         ha->iodesc_pd = NULL;
2100         ha->iodesc_pd_dma = 0;
2101         ha->init_cb = NULL;
2102         ha->init_cb_dma = 0;
2103
2104         ha->s_dma_pool = NULL;
2105
2106         ha->rlc_rsp = NULL;
2107         ha->rlc_rsp_dma = 0;
2108         ha->gid_list = NULL;
2109         ha->gid_list_dma = 0;
2110
2111         ha->response_ring = NULL;
2112         ha->response_dma = 0;
2113         ha->request_ring = NULL;
2114         ha->request_dma = 0;
2115
2116         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2117                 fcport = list_entry(fcpl, fc_port_t, list);
2118
2119                 /* fc ports */
2120                 list_del_init(&fcport->list);
2121                 kfree(fcport);
2122         }
2123         INIT_LIST_HEAD(&ha->fcports);
2124
2125         if (ha->fw_dump)
2126                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2127
2128         vfree(ha->fw_dump24);
2129
2130         vfree(ha->fw_dump_buffer);
2131
2132         ha->fw_dump = NULL;
2133         ha->fw_dump24 = NULL;
2134         ha->fw_dumped = 0;
2135         ha->fw_dump_reading = 0;
2136         ha->fw_dump_buffer = NULL;
2137
2138         vfree(ha->optrom_buffer);
2139 }
2140
2141 /*
2142  * qla2x00_allocate_sp_pool
2143  *       This routine is called during initialization to allocate
2144  *       memory for local srb_t.
2145  *
2146  * Input:
2147  *       ha   = adapter block pointer.
2148  *
2149  * Context:
2150  *      Kernel context.
2151  *
2152  * Note: Sets the ref_count for non Null sp to one.
2153  */
2154 static int
2155 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2156 {
2157         int      rval;
2158
2159         rval = QLA_SUCCESS;
2160         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2161         if (ha->srb_mempool == NULL) {
2162                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2163                 rval = QLA_FUNCTION_FAILED;
2164         }
2165         return (rval);
2166 }
2167
2168 /*
2169  *  This routine frees all adapter allocated memory.
2170  *
2171  */
2172 static void
2173 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2174 {
2175         if (ha->srb_mempool) {
2176                 mempool_destroy(ha->srb_mempool);
2177                 ha->srb_mempool = NULL;
2178         }
2179 }
2180
2181 /**************************************************************************
2182 * qla2x00_do_dpc
2183 *   This kernel thread is a task that is schedule by the interrupt handler
2184 *   to perform the background processing for interrupts.
2185 *
2186 * Notes:
2187 * This task always run in the context of a kernel thread.  It
2188 * is kick-off by the driver's detect code and starts up
2189 * up one per adapter. It immediately goes to sleep and waits for
2190 * some fibre event.  When either the interrupt handler or
2191 * the timer routine detects a event it will one of the task
2192 * bits then wake us up.
2193 **************************************************************************/
2194 static int
2195 qla2x00_do_dpc(void *data)
2196 {
2197         scsi_qla_host_t *ha;
2198         fc_port_t       *fcport;
2199         uint8_t         status;
2200         uint16_t        next_loopid;
2201
2202         ha = (scsi_qla_host_t *)data;
2203
2204         set_user_nice(current, -20);
2205
2206         while (!kthread_should_stop()) {
2207                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2208
2209                 set_current_state(TASK_INTERRUPTIBLE);
2210                 schedule();
2211                 __set_current_state(TASK_RUNNING);
2212
2213                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2214
2215                 /* Initialization not yet finished. Don't do anything yet. */
2216                 if (!ha->flags.init_done)
2217                         continue;
2218
2219                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2220
2221                 ha->dpc_active = 1;
2222
2223                 if (ha->flags.mbox_busy) {
2224                         ha->dpc_active = 0;
2225                         continue;
2226                 }
2227
2228                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2229
2230                         DEBUG(printk("scsi(%ld): dpc: sched "
2231                             "qla2x00_abort_isp ha = %p\n",
2232                             ha->host_no, ha));
2233                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2234                             &ha->dpc_flags))) {
2235
2236                                 if (qla2x00_abort_isp(ha)) {
2237                                         /* failed. retry later */
2238                                         set_bit(ISP_ABORT_NEEDED,
2239                                             &ha->dpc_flags);
2240                                 }
2241                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2242                         }
2243                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2244                             ha->host_no));
2245                 }
2246
2247                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2248                         qla2x00_update_fcports(ha);
2249
2250                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2251                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2252                             ha->host_no));
2253                         qla2x00_loop_reset(ha);
2254                 }
2255
2256                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2257                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2258
2259                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2260                             ha->host_no));
2261
2262                         qla2x00_rst_aen(ha);
2263                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2264                 }
2265
2266                 /* Retry each device up to login retry count */
2267                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2268                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2269                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2270
2271                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2272                             ha->host_no));
2273
2274                         next_loopid = 0;
2275                         list_for_each_entry(fcport, &ha->fcports, list) {
2276                                 if (fcport->port_type != FCT_TARGET)
2277                                         continue;
2278
2279                                 /*
2280                                  * If the port is not ONLINE then try to login
2281                                  * to it if we haven't run out of retries.
2282                                  */
2283                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2284                                     fcport->login_retry) {
2285
2286                                         fcport->login_retry--;
2287                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2288                                                 if (fcport->flags &
2289                                                     FCF_TAPE_PRESENT)
2290                                                         ha->isp_ops.fabric_logout(
2291                                                             ha, fcport->loop_id,
2292                                                             fcport->d_id.b.domain,
2293                                                             fcport->d_id.b.area,
2294                                                             fcport->d_id.b.al_pa);
2295                                                 status = qla2x00_fabric_login(
2296                                                     ha, fcport, &next_loopid);
2297                                         } else
2298                                                 status =
2299                                                     qla2x00_local_device_login(
2300                                                         ha, fcport);
2301
2302                                         if (status == QLA_SUCCESS) {
2303                                                 fcport->old_loop_id = fcport->loop_id;
2304
2305                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2306                                                     ha->host_no, fcport->loop_id));
2307
2308                                                 qla2x00_update_fcport(ha,
2309                                                     fcport);
2310                                         } else if (status == 1) {
2311                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2312                                                 /* retry the login again */
2313                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2314                                                     ha->host_no,
2315                                                     fcport->login_retry, fcport->loop_id));
2316                                         } else {
2317                                                 fcport->login_retry = 0;
2318                                         }
2319                                 }
2320                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2321                                         break;
2322                         }
2323                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2324                             ha->host_no));
2325                 }
2326
2327                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2328                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2329
2330                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2331                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2332                             ha->host_no));
2333
2334                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2335
2336                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2337                             ha->host_no));
2338                 }
2339
2340                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2341
2342                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2343                             ha->host_no));
2344
2345                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2346                             &ha->dpc_flags))) {
2347
2348                                 qla2x00_loop_resync(ha);
2349
2350                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2351                         }
2352
2353                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2354                             ha->host_no));
2355                 }
2356
2357                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2358
2359                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2360                             ha->host_no));
2361
2362                         qla2x00_rescan_fcports(ha);
2363
2364                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2365                             "end.\n",
2366                             ha->host_no));
2367                 }
2368
2369                 if (!ha->interrupts_on)
2370                         ha->isp_ops.enable_intrs(ha);
2371
2372                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2373                         ha->isp_ops.beacon_blink(ha);
2374
2375                 ha->dpc_active = 0;
2376         } /* End of while(1) */
2377
2378         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2379
2380         /*
2381          * Make sure that nobody tries to wake us up again.
2382          */
2383         ha->dpc_active = 0;
2384
2385         return 0;
2386 }
2387
2388 void
2389 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2390 {
2391         if (ha->dpc_thread)
2392                 wake_up_process(ha->dpc_thread);
2393 }
2394
2395 /*
2396 *  qla2x00_rst_aen
2397 *      Processes asynchronous reset.
2398 *
2399 * Input:
2400 *      ha  = adapter block pointer.
2401 */
2402 static void
2403 qla2x00_rst_aen(scsi_qla_host_t *ha)
2404 {
2405         if (ha->flags.online && !ha->flags.reset_active &&
2406             !atomic_read(&ha->loop_down_timer) &&
2407             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2408                 do {
2409                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2410
2411                         /*
2412                          * Issue marker command only when we are going to start
2413                          * the I/O.
2414                          */
2415                         ha->marker_needed = 1;
2416                 } while (!atomic_read(&ha->loop_down_timer) &&
2417                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2418         }
2419 }
2420
2421 static void
2422 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2423 {
2424         struct scsi_cmnd *cmd = sp->cmd;
2425
2426         if (sp->flags & SRB_DMA_VALID) {
2427                 if (cmd->use_sg) {
2428                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2429                             cmd->use_sg, cmd->sc_data_direction);
2430                 } else if (cmd->request_bufflen) {
2431                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2432                             cmd->request_bufflen, cmd->sc_data_direction);
2433                 }
2434                 sp->flags &= ~SRB_DMA_VALID;
2435         }
2436         CMD_SP(cmd) = NULL;
2437 }
2438
2439 void
2440 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2441 {
2442         struct scsi_cmnd *cmd = sp->cmd;
2443
2444         qla2x00_sp_free_dma(ha, sp);
2445
2446         mempool_free(sp, ha->srb_mempool);
2447
2448         cmd->scsi_done(cmd);
2449 }
2450
2451 /**************************************************************************
2452 *   qla2x00_timer
2453 *
2454 * Description:
2455 *   One second timer
2456 *
2457 * Context: Interrupt
2458 ***************************************************************************/
2459 static void
2460 qla2x00_timer(scsi_qla_host_t *ha)
2461 {
2462         unsigned long   cpu_flags = 0;
2463         fc_port_t       *fcport;
2464         int             start_dpc = 0;
2465         int             index;
2466         srb_t           *sp;
2467         int             t;
2468
2469         /*
2470          * Ports - Port down timer.
2471          *
2472          * Whenever, a port is in the LOST state we start decrementing its port
2473          * down timer every second until it reaches zero. Once  it reaches zero
2474          * the port it marked DEAD.
2475          */
2476         t = 0;
2477         list_for_each_entry(fcport, &ha->fcports, list) {
2478                 if (fcport->port_type != FCT_TARGET)
2479                         continue;
2480
2481                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2482
2483                         if (atomic_read(&fcport->port_down_timer) == 0)
2484                                 continue;
2485
2486                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2487                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2488
2489                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2490                             "%d remaining\n",
2491                             ha->host_no,
2492                             t, atomic_read(&fcport->port_down_timer)));
2493                 }
2494                 t++;
2495         } /* End of for fcport  */
2496
2497
2498         /* Loop down handler. */
2499         if (atomic_read(&ha->loop_down_timer) > 0 &&
2500             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2501
2502                 if (atomic_read(&ha->loop_down_timer) ==
2503                     ha->loop_down_abort_time) {
2504
2505                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2506                             "queues before time expire\n",
2507                             ha->host_no));
2508
2509                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2510                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2511
2512                         /* Schedule an ISP abort to return any tape commands. */
2513                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2514                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2515                             index++) {
2516                                 fc_port_t *sfcp;
2517
2518                                 sp = ha->outstanding_cmds[index];
2519                                 if (!sp)
2520                                         continue;
2521                                 sfcp = sp->fcport;
2522                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2523                                         continue;
2524
2525                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2526                                 break;
2527                         }
2528                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2529
2530                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2531                         start_dpc++;
2532                 }
2533
2534                 /* if the loop has been down for 4 minutes, reinit adapter */
2535                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2536                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2537                             "restarting queues.\n",
2538                             ha->host_no));
2539
2540                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2541                         start_dpc++;
2542
2543                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2544                                 DEBUG(printk("scsi(%ld): Loop down - "
2545                                     "aborting ISP.\n",
2546                                     ha->host_no));
2547                                 qla_printk(KERN_WARNING, ha,
2548                                     "Loop down - aborting ISP.\n");
2549
2550                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2551                         }
2552                 }
2553                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2554                     ha->host_no,
2555                     atomic_read(&ha->loop_down_timer)));
2556         }
2557
2558         /* Check if beacon LED needs to be blinked */
2559         if (ha->beacon_blink_led == 1) {
2560                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2561                 start_dpc++;
2562         }
2563
2564         /* Schedule the DPC routine if needed */
2565         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2566             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2567             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2568             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2569             start_dpc ||
2570             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2571             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2572             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2573             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2574                 qla2xxx_wake_dpc(ha);
2575
2576         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2577 }
2578
2579 /* XXX(hch): crude hack to emulate a down_timeout() */
2580 int
2581 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2582 {
2583         const unsigned int step = 100; /* msecs */
2584         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2585
2586         do {
2587                 if (!down_trylock(sema))
2588                         return 0;
2589                 if (msleep_interruptible(step))
2590                         break;
2591         } while (--iterations >= 0);
2592
2593         return -ETIMEDOUT;
2594 }
2595
2596 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2597
2598 #define qla2x00_release_firmware()      do { } while (0)
2599 #define qla2x00_pci_module_init()       (0)
2600 #define qla2x00_pci_module_exit()       do { } while (0)
2601
2602 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2603
2604 /* Firmware interface routines. */
2605
2606 #define FW_BLOBS        5
2607 #define FW_ISP21XX      0
2608 #define FW_ISP22XX      1
2609 #define FW_ISP2300      2
2610 #define FW_ISP2322      3
2611 #define FW_ISP24XX      4
2612
2613 static DECLARE_MUTEX(qla_fw_lock);
2614
2615 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2616         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2617         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2618         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2619         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2620         { .name = "ql2400_fw.bin", },
2621 };
2622
2623 struct fw_blob *
2624 qla2x00_request_firmware(scsi_qla_host_t *ha)
2625 {
2626         struct fw_blob *blob;
2627
2628         blob = NULL;
2629         if (IS_QLA2100(ha)) {
2630                 blob = &qla_fw_blobs[FW_ISP21XX];
2631         } else if (IS_QLA2200(ha)) {
2632                 blob = &qla_fw_blobs[FW_ISP22XX];
2633         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2634                 blob = &qla_fw_blobs[FW_ISP2300];
2635         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2636                 blob = &qla_fw_blobs[FW_ISP2322];
2637         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2638                 blob = &qla_fw_blobs[FW_ISP24XX];
2639         }
2640
2641         down(&qla_fw_lock);
2642         if (blob->fw)
2643                 goto out;
2644
2645         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2646                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2647                     "(%s).\n", ha->host_no, blob->name));
2648                 blob->fw = NULL;
2649                 blob = NULL;
2650                 goto out;
2651         }
2652
2653 out:
2654         up(&qla_fw_lock);
2655         return blob;
2656 }
2657
2658 static void
2659 qla2x00_release_firmware(void)
2660 {
2661         int idx;
2662
2663         down(&qla_fw_lock);
2664         for (idx = 0; idx < FW_BLOBS; idx++)
2665                 if (qla_fw_blobs[idx].fw)
2666                         release_firmware(qla_fw_blobs[idx].fw);
2667         up(&qla_fw_lock);
2668 }
2669
2670 static struct qla_board_info qla_board_tbl = {
2671         .drv_name       = "qla2xxx",
2672 };
2673
2674 static struct pci_device_id qla2xxx_pci_tbl[] = {
2675         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2676                 PCI_ANY_ID, PCI_ANY_ID, },
2677         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2678                 PCI_ANY_ID, PCI_ANY_ID, },
2679         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2680                 PCI_ANY_ID, PCI_ANY_ID, },
2681         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2682                 PCI_ANY_ID, PCI_ANY_ID, },
2683         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2684                 PCI_ANY_ID, PCI_ANY_ID, },
2685         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2686                 PCI_ANY_ID, PCI_ANY_ID, },
2687         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2688                 PCI_ANY_ID, PCI_ANY_ID, },
2689         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2690                 PCI_ANY_ID, PCI_ANY_ID, },
2691         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2692                 PCI_ANY_ID, PCI_ANY_ID, },
2693         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422,
2694                 PCI_ANY_ID, PCI_ANY_ID, },
2695         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432,
2696                 PCI_ANY_ID, PCI_ANY_ID, },
2697         { 0 },
2698 };
2699 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2700
2701 static int __devinit
2702 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2703 {
2704         return qla2x00_probe_one(pdev, &qla_board_tbl);
2705 }
2706
2707 static void __devexit
2708 qla2xxx_remove_one(struct pci_dev *pdev)
2709 {
2710         qla2x00_remove_one(pdev);
2711 }
2712
2713 static struct pci_driver qla2xxx_pci_driver = {
2714         .name           = "qla2xxx",
2715         .driver         = {
2716                 .owner          = THIS_MODULE,
2717         },
2718         .id_table       = qla2xxx_pci_tbl,
2719         .probe          = qla2xxx_probe_one,
2720         .remove         = __devexit_p(qla2xxx_remove_one),
2721 };
2722
2723 static inline int
2724 qla2x00_pci_module_init(void)
2725 {
2726         return pci_module_init(&qla2xxx_pci_driver);
2727 }
2728
2729 static inline void
2730 qla2x00_pci_module_exit(void)
2731 {
2732         pci_unregister_driver(&qla2xxx_pci_driver);
2733 }
2734
2735 #endif
2736
2737 /**
2738  * qla2x00_module_init - Module initialization.
2739  **/
2740 static int __init
2741 qla2x00_module_init(void)
2742 {
2743         int ret = 0;
2744
2745         /* Allocate cache for SRBs. */
2746         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2747             SLAB_HWCACHE_ALIGN, NULL, NULL);
2748         if (srb_cachep == NULL) {
2749                 printk(KERN_ERR
2750                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2751                 return -ENOMEM;
2752         }
2753
2754         /* Derive version string. */
2755         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2756 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2757         strcat(qla2x00_version_str, "-fw");
2758 #endif
2759 #if DEBUG_QLA2100
2760         strcat(qla2x00_version_str, "-debug");
2761 #endif
2762         qla2xxx_transport_template =
2763             fc_attach_transport(&qla2xxx_transport_functions);
2764         if (!qla2xxx_transport_template)
2765                 return -ENODEV;
2766
2767         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2768         ret = qla2x00_pci_module_init();
2769         if (ret) {
2770                 kmem_cache_destroy(srb_cachep);
2771                 fc_release_transport(qla2xxx_transport_template);
2772         }
2773         return ret;
2774 }
2775
2776 /**
2777  * qla2x00_module_exit - Module cleanup.
2778  **/
2779 static void __exit
2780 qla2x00_module_exit(void)
2781 {
2782         qla2x00_pci_module_exit();
2783         qla2x00_release_firmware();
2784         kmem_cache_destroy(srb_cachep);
2785         fc_release_transport(qla2xxx_transport_template);
2786 }
2787
2788 module_init(qla2x00_module_init);
2789 module_exit(qla2x00_module_exit);
2790
2791 MODULE_AUTHOR("QLogic Corporation");
2792 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2793 MODULE_LICENSE("GPL");
2794 MODULE_VERSION(QLA2XXX_VERSION);