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

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 #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         sp->ha = ha;
 344         sp->fcport = fcport;
 345         sp->cmd = cmd;
 346         sp->flags = 0;
 347         CMD_SP(cmd) = (void *)sp;
 348         cmd->scsi_done = done;
 349
 350         return sp;
 351 }
 352
 353 static int
 354 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 355 {
 356         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 357         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 358         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 359         srb_t *sp;
 360         int rval;
 361
 362         rval = fc_remote_port_chkready(rport);
 363         if (rval) {
 364                 cmd->result = rval;
 365                 goto qc_fail_command;
 366         }
 367
 368         /* Close window on fcport/rport state-transitioning. */
 369         if (!*(fc_port_t **)rport->dd_data) {
 370                 cmd->result = DID_IMM_RETRY << 16;
 371                 goto qc_fail_command;
 372         }
 373
 374         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 375                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 376                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 377                         cmd->result = DID_NO_CONNECT << 16;
 378                         goto qc_fail_command;
 379                 }
 380                 goto qc_host_busy;
 381         }
 382
 383         spin_unlock_irq(ha->host->host_lock);
 384
 385         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 386         if (!sp)
 387                 goto qc_host_busy_lock;
 388
 389         rval = qla2x00_start_scsi(sp);
 390         if (rval != QLA_SUCCESS)
 391                 goto qc_host_busy_free_sp;
 392
 393         spin_lock_irq(ha->host->host_lock);
 394
 395         return 0;
 396
 397 qc_host_busy_free_sp:
 398         qla2x00_sp_free_dma(ha, sp);
 399         mempool_free(sp, ha->srb_mempool);
 400
 401 qc_host_busy_lock:
 402         spin_lock_irq(ha->host->host_lock);
 403
 404 qc_host_busy:
 405         return SCSI_MLQUEUE_HOST_BUSY;
 406
 407 qc_fail_command:
 408         done(cmd);
 409
 410         return 0;
 411 }
 412
 413
 414 static int
 415 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 416 {
 417         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 418         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 419         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 420         srb_t *sp;
 421         int rval;
 422
 423         rval = fc_remote_port_chkready(rport);
 424         if (rval) {
 425                 cmd->result = rval;
 426                 goto qc24_fail_command;
 427         }
 428
 429         /* Close window on fcport/rport state-transitioning. */
 430         if (!*(fc_port_t **)rport->dd_data) {
 431                 cmd->result = DID_IMM_RETRY << 16;
 432                 goto qc24_fail_command;
 433         }
 434
 435         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 436                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 437                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 438                         cmd->result = DID_NO_CONNECT << 16;
 439                         goto qc24_fail_command;
 440                 }
 441                 goto qc24_host_busy;
 442         }
 443
 444         spin_unlock_irq(ha->host->host_lock);
 445
 446         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 447         if (!sp)
 448                 goto qc24_host_busy_lock;
 449
 450         rval = qla24xx_start_scsi(sp);
 451         if (rval != QLA_SUCCESS)
 452                 goto qc24_host_busy_free_sp;
 453
 454         spin_lock_irq(ha->host->host_lock);
 455
 456         return 0;
 457
 458 qc24_host_busy_free_sp:
 459         qla2x00_sp_free_dma(ha, sp);
 460         mempool_free(sp, ha->srb_mempool);
 461
 462 qc24_host_busy_lock:
 463         spin_lock_irq(ha->host->host_lock);
 464
 465 qc24_host_busy:
 466         return SCSI_MLQUEUE_HOST_BUSY;
 467
 468 qc24_fail_command:
 469         done(cmd);
 470
 471         return 0;
 472 }
 473
 474
 475 /*
 476  * qla2x00_eh_wait_on_command
 477  *    Waits for the command to be returned by the Firmware for some
 478  *    max time.
 479  *
 480  * Input:
 481  *    ha = actual ha whose done queue will contain the command
 482  *            returned by firmware.
 483  *    cmd = Scsi Command to wait on.
 484  *    flag = Abort/Reset(Bus or Device Reset)
 485  *
 486  * Return:
 487  *    Not Found : 0
 488  *    Found : 1
 489  */
 490 static int
 491 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 492 {
 493 #define ABORT_POLLING_PERIOD    1000
 494 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 495         unsigned long wait_iter = ABORT_WAIT_ITER;
 496         int ret = QLA_SUCCESS;
 497
 498         while (CMD_SP(cmd)) {
 499                 msleep(ABORT_POLLING_PERIOD);
 500
 501                 if (--wait_iter)
 502                         break;
 503         }
 504         if (CMD_SP(cmd))
 505                 ret = QLA_FUNCTION_FAILED;
 506
 507         return ret;
 508 }
 509
 510 /*
 511  * qla2x00_wait_for_hba_online
 512  *    Wait till the HBA is online after going through
 513  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 514  *    finally HBA is disabled ie marked offline
 515  *
 516  * Input:
 517  *     ha - pointer to host adapter structure
 518  *
 519  * Note:
 520  *    Does context switching-Release SPIN_LOCK
 521  *    (if any) before calling this routine.
 522  *
 523  * Return:
 524  *    Success (Adapter is online) : 0
 525  *    Failed  (Adapter is offline/disabled) : 1
 526  */
 527 int
 528 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 529 {
 530         int             return_status;
 531         unsigned long   wait_online;
 532
 533         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 534         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 535             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 536             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 537             ha->dpc_active) && time_before(jiffies, wait_online)) {
 538
 539                 msleep(1000);
 540         }
 541         if (ha->flags.online)
 542                 return_status = QLA_SUCCESS;
 543         else
 544                 return_status = QLA_FUNCTION_FAILED;
 545
 546         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 547
 548         return (return_status);
 549 }
 550
 551 /*
 552  * qla2x00_wait_for_loop_ready
 553  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 554  *    to be in LOOP_READY state.
 555  * Input:
 556  *     ha - pointer to host adapter structure
 557  *
 558  * Note:
 559  *    Does context switching-Release SPIN_LOCK
 560  *    (if any) before calling this routine.
 561  *
 562  *
 563  * Return:
 564  *    Success (LOOP_READY) : 0
 565  *    Failed  (LOOP_NOT_READY) : 1
 566  */
 567 static inline int
 568 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 569 {
 570         int      return_status = QLA_SUCCESS;
 571         unsigned long loop_timeout ;
 572
 573         /* wait for 5 min at the max for loop to be ready */
 574         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 575
 576         while ((!atomic_read(&ha->loop_down_timer) &&
 577             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 578             atomic_read(&ha->loop_state) != LOOP_READY) {
 579                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 580                         return_status = QLA_FUNCTION_FAILED;
 581                         break;
 582                 }
 583                 msleep(1000);
 584                 if (time_after_eq(jiffies, loop_timeout)) {
 585                         return_status = QLA_FUNCTION_FAILED;
 586                         break;
 587                 }
 588         }
 589         return (return_status);
 590 }
 591
 592 /**************************************************************************
 593 * qla2xxx_eh_abort
 594 *
 595 * Description:
 596 *    The abort function will abort the specified command.
 597 *
 598 * Input:
 599 *    cmd = Linux SCSI command packet to be aborted.
 600 *
 601 * Returns:
 602 *    Either SUCCESS or FAILED.
 603 *
 604 * Note:
 605 **************************************************************************/
 606 int
 607 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 608 {
 609         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 610         srb_t *sp;
 611         int ret, i;
 612         unsigned int id, lun;
 613         unsigned long serial;
 614         unsigned long flags;
 615
 616         if (!CMD_SP(cmd))
 617                 return FAILED;
 618
 619         ret = FAILED;
 620
 621         id = cmd->device->id;
 622         lun = cmd->device->lun;
 623         serial = cmd->serial_number;
 624
 625         /* Check active list for command command. */
 626         spin_lock_irqsave(&ha->hardware_lock, flags);
 627         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 628                 sp = ha->outstanding_cmds[i];
 629
 630                 if (sp == NULL)
 631                         continue;
 632
 633                 if (sp->cmd != cmd)
 634                         continue;
 635
 636                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 637                     __func__, ha->host_no, sp, serial));
 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                         ret = SUCCESS;
 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 (ret == SUCCESS) {
 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                 }
 662         }
 663
 664         qla_printk(KERN_INFO, ha,
 665             "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
 666             id, lun, serial, ret);
 667
 668         return ret;
 669 }
 670
 671 /**************************************************************************
 672 * qla2x00_eh_wait_for_pending_target_commands
 673 *
 674 * Description:
 675 *    Waits for all the commands to come back from the specified target.
 676 *
 677 * Input:
 678 *    ha - pointer to scsi_qla_host structure.
 679 *    t  - target
 680 * Returns:
 681 *    Either SUCCESS or FAILED.
 682 *
 683 * Note:
 684 **************************************************************************/
 685 static int
 686 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 687 {
 688         int     cnt;
 689         int     status;
 690         srb_t           *sp;
 691         struct scsi_cmnd *cmd;
 692         unsigned long flags;
 693
 694         status = 0;
 695
 696         /*
 697          * Waiting for all commands for the designated target in the active
 698          * array
 699          */
 700         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 701                 spin_lock_irqsave(&ha->hardware_lock, flags);
 702                 sp = ha->outstanding_cmds[cnt];
 703                 if (sp) {
 704                         cmd = sp->cmd;
 705                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 706                         if (cmd->device->id == t) {
 707                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 708                                         status = 1;
 709                                         break;
 710                                 }
 711                         }
 712                 } else {
 713                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 714                 }
 715         }
 716         return (status);
 717 }
 718
 719
 720 /**************************************************************************
 721 * qla2xxx_eh_device_reset
 722 *
 723 * Description:
 724 *    The device reset function will reset the target and abort any
 725 *    executing commands.
 726 *
 727 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 728 *          attempt to use this value, even if you determine it is
 729 *          non-null.
 730 *
 731 * Input:
 732 *    cmd = Linux SCSI command packet of the command that cause the
 733 *          bus device reset.
 734 *
 735 * Returns:
 736 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 737 *
 738 **************************************************************************/
 739 int
 740 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 741 {
 742         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 743         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 744         srb_t *sp;
 745         int ret;
 746         unsigned int id, lun;
 747         unsigned long serial;
 748
 749         ret = FAILED;
 750
 751         id = cmd->device->id;
 752         lun = cmd->device->lun;
 753         serial = cmd->serial_number;
 754
 755         sp = (srb_t *) CMD_SP(cmd);
 756         if (!sp || !fcport)
 757                 return ret;
 758
 759         qla_printk(KERN_INFO, ha,
 760             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 761
 762         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 763                 goto eh_dev_reset_done;
 764
 765         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 766                 if (qla2x00_device_reset(ha, fcport) == 0)
 767                         ret = SUCCESS;
 768
 769 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 770                 if (ret == SUCCESS) {
 771                         if (fcport->flags & FC_FABRIC_DEVICE) {
 772                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 773                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 774                         }
 775                 }
 776 #endif
 777         } else {
 778                 DEBUG2(printk(KERN_INFO
 779                     "%s failed: loop not ready\n",__func__);)
 780         }
 781
 782         if (ret == FAILED) {
 783                 DEBUG3(printk("%s(%ld): device reset failed\n",
 784                     __func__, ha->host_no));
 785                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 786                     __func__);
 787
 788                 goto eh_dev_reset_done;
 789         }
 790
 791         /* Flush outstanding commands. */
 792         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 793                 ret = FAILED;
 794         if (ret == FAILED) {
 795                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 796                     __func__, ha->host_no));
 797                 qla_printk(KERN_INFO, ha,
 798                     "%s: failed while waiting for commands\n", __func__);
 799         } else
 800                 qla_printk(KERN_INFO, ha,
 801                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 802                     id, lun);
 803  eh_dev_reset_done:
 804         return ret;
 805 }
 806
 807 /**************************************************************************
 808 * qla2x00_eh_wait_for_pending_commands
 809 *
 810 * Description:
 811 *    Waits for all the commands to come back from the specified host.
 812 *
 813 * Input:
 814 *    ha - pointer to scsi_qla_host structure.
 815 *
 816 * Returns:
 817 *    1 : SUCCESS
 818 *    0 : FAILED
 819 *
 820 * Note:
 821 **************************************************************************/
 822 static int
 823 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 824 {
 825         int     cnt;
 826         int     status;
 827         srb_t           *sp;
 828         struct scsi_cmnd *cmd;
 829         unsigned long flags;
 830
 831         status = 1;
 832
 833         /*
 834          * Waiting for all commands for the designated target in the active
 835          * array
 836          */
 837         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 838                 spin_lock_irqsave(&ha->hardware_lock, flags);
 839                 sp = ha->outstanding_cmds[cnt];
 840                 if (sp) {
 841                         cmd = sp->cmd;
 842                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 843                         status = qla2x00_eh_wait_on_command(ha, cmd);
 844                         if (status == 0)
 845                                 break;
 846                 }
 847                 else {
 848                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 849                 }
 850         }
 851         return (status);
 852 }
 853
 854
 855 /**************************************************************************
 856 * qla2xxx_eh_bus_reset
 857 *
 858 * Description:
 859 *    The bus reset function will reset the bus and abort any executing
 860 *    commands.
 861 *
 862 * Input:
 863 *    cmd = Linux SCSI command packet of the command that cause the
 864 *          bus reset.
 865 *
 866 * Returns:
 867 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 868 *
 869 **************************************************************************/
 870 int
 871 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 872 {
 873         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 874         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 875         srb_t *sp;
 876         int ret;
 877         unsigned int id, lun;
 878         unsigned long serial;
 879
 880         ret = FAILED;
 881
 882         id = cmd->device->id;
 883         lun = cmd->device->lun;
 884         serial = cmd->serial_number;
 885
 886         sp = (srb_t *) CMD_SP(cmd);
 887         if (!sp || !fcport)
 888                 return ret;
 889
 890         qla_printk(KERN_INFO, ha,
 891             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 892
 893         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 894                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 895                 goto eh_bus_reset_done;
 896         }
 897
 898         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 899                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 900                         ret = SUCCESS;
 901         }
 902         if (ret == FAILED)
 903                 goto eh_bus_reset_done;
 904
 905         /* Flush outstanding commands. */
 906         if (!qla2x00_eh_wait_for_pending_commands(ha))
 907                 ret = FAILED;
 908
 909 eh_bus_reset_done:
 910         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 911             (ret == FAILED) ? "failed" : "succeded");
 912
 913         return ret;
 914 }
 915
 916 /**************************************************************************
 917 * qla2xxx_eh_host_reset
 918 *
 919 * Description:
 920 *    The reset function will reset the Adapter.
 921 *
 922 * Input:
 923 *      cmd = Linux SCSI command packet of the command that cause the
 924 *            adapter reset.
 925 *
 926 * Returns:
 927 *      Either SUCCESS or FAILED.
 928 *
 929 * Note:
 930 **************************************************************************/
 931 int
 932 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 933 {
 934         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 935         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 936         srb_t *sp;
 937         int ret;
 938         unsigned int id, lun;
 939         unsigned long serial;
 940
 941         ret = FAILED;
 942
 943         id = cmd->device->id;
 944         lun = cmd->device->lun;
 945         serial = cmd->serial_number;
 946
 947         sp = (srb_t *) CMD_SP(cmd);
 948         if (!sp || !fcport)
 949                 return ret;
 950
 951         qla_printk(KERN_INFO, ha,
 952             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 953
 954         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 955                 goto eh_host_reset_lock;
 956
 957         /*
 958          * Fixme-may be dpc thread is active and processing
 959          * loop_resync,so wait a while for it to
 960          * be completed and then issue big hammer.Otherwise
 961          * it may cause I/O failure as big hammer marks the
 962          * devices as lost kicking of the port_down_timer
 963          * while dpc is stuck for the mailbox to complete.
 964          */
 965         qla2x00_wait_for_loop_ready(ha);
 966         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 967         if (qla2x00_abort_isp(ha)) {
 968                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 969                 /* failed. schedule dpc to try */
 970                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 971
 972                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 973                         goto eh_host_reset_lock;
 974         }
 975         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 976
 977         /* Waiting for our command in done_queue to be returned to OS.*/
 978         if (qla2x00_eh_wait_for_pending_commands(ha))
 979                 ret = SUCCESS;
 980
 981 eh_host_reset_lock:
 982         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 983             (ret == FAILED) ? "failed" : "succeded");
 984
 985         return ret;
 986 }
 987
 988 /*
 989 * qla2x00_loop_reset
 990 *      Issue loop reset.
 991 *
 992 * Input:
 993 *      ha = adapter block pointer.
 994 *
 995 * Returns:
 996 *      0 = success
 997 */
 998 static int
 999 qla2x00_loop_reset(scsi_qla_host_t *ha)
1000 {
1001         int status = QLA_SUCCESS;
1002         struct fc_port *fcport;
1003
1004         if (ha->flags.enable_lip_reset) {
1005                 status = qla2x00_lip_reset(ha);
1006         }
1007
1008         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1009                 list_for_each_entry(fcport, &ha->fcports, list) {
1010                         if (fcport->port_type != FCT_TARGET)
1011                                 continue;
1012
1013                         status = qla2x00_device_reset(ha, fcport);
1014                         if (status != QLA_SUCCESS)
1015                                 break;
1016                 }
1017         }
1018
1019         if (status == QLA_SUCCESS &&
1020                 ((!ha->flags.enable_target_reset &&
1021                   !ha->flags.enable_lip_reset) ||
1022                 ha->flags.enable_lip_full_login)) {
1023
1024                 status = qla2x00_full_login_lip(ha);
1025         }
1026
1027         /* Issue marker command only when we are going to start the I/O */
1028         ha->marker_needed = 1;
1029
1030         if (status) {
1031                 /* Empty */
1032                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1033                                 __func__,
1034                                 ha->host_no);)
1035         } else {
1036                 /* Empty */
1037                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1038                                 __func__,
1039                                 ha->host_no);)
1040         }
1041
1042         return(status);
1043 }
1044
1045 /*
1046  * qla2x00_device_reset
1047  *      Issue bus device reset message to the target.
1048  *
1049  * Input:
1050  *      ha = adapter block pointer.
1051  *      t = SCSI ID.
1052  *      TARGET_QUEUE_LOCK must be released.
1053  *      ADAPTER_STATE_LOCK must be released.
1054  *
1055  * Context:
1056  *      Kernel context.
1057  */
1058 static int
1059 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1060 {
1061         /* Abort Target command will clear Reservation */
1062         return ha->isp_ops.abort_target(reset_fcport);
1063 }
1064
1065 static int
1066 qla2xxx_slave_alloc(struct scsi_device *sdev)
1067 {
1068         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1069
1070         if (!rport || fc_remote_port_chkready(rport))
1071                 return -ENXIO;
1072
1073         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1074
1075         return 0;
1076 }
1077
1078 static int
1079 qla2xxx_slave_configure(struct scsi_device *sdev)
1080 {
1081         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1082         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1083
1084         if (sdev->tagged_supported)
1085                 scsi_activate_tcq(sdev, 32);
1086         else
1087                 scsi_deactivate_tcq(sdev, 32);
1088
1089         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1090
1091         return 0;
1092 }
1093
1094 static void
1095 qla2xxx_slave_destroy(struct scsi_device *sdev)
1096 {
1097         sdev->hostdata = NULL;
1098 }
1099
1100 static int
1101 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1102 {
1103         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1104         return sdev->queue_depth;
1105 }
1106
1107 static int
1108 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1109 {
1110         if (sdev->tagged_supported) {
1111                 scsi_set_tag_type(sdev, tag_type);
1112                 if (tag_type)
1113                         scsi_activate_tcq(sdev, sdev->queue_depth);
1114                 else
1115                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1116         } else
1117                 tag_type = 0;
1118
1119         return tag_type;
1120 }
1121
1122 /**
1123  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1124  * @ha: HA context
1125  *
1126  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1127  * supported addressing method.
1128  */
1129 static void
1130 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1131 {
1132         /* Assume a 32bit DMA mask. */
1133         ha->flags.enable_64bit_addressing = 0;
1134
1135         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1136                 /* Any upper-dword bits set? */
1137                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1138                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1139                         /* Ok, a 64bit DMA mask is applicable. */
1140                         ha->flags.enable_64bit_addressing = 1;
1141                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1142                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1143                         return;
1144                 }
1145         }
1146
1147         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1148         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1149 }
1150
1151 static inline void
1152 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1153 {
1154         ha->device_type = DT_EXTENDED_IDS;
1155         switch (ha->pdev->device) {
1156         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1157                 ha->device_type |= DT_ISP2100;
1158                 ha->device_type &= ~DT_EXTENDED_IDS;
1159                 break;
1160         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1161                 ha->device_type |= DT_ISP2200;
1162                 ha->device_type &= ~DT_EXTENDED_IDS;
1163                 break;
1164         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1165                 ha->device_type |= DT_ISP2300;
1166                 ha->device_type |= DT_ZIO_SUPPORTED;
1167                 break;
1168         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1169                 ha->device_type |= DT_ISP2312;
1170                 ha->device_type |= DT_ZIO_SUPPORTED;
1171                 break;
1172         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1173                 ha->device_type |= DT_ISP2322;
1174                 ha->device_type |= DT_ZIO_SUPPORTED;
1175                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1176                     ha->pdev->subsystem_device == 0x0170)
1177                         ha->device_type |= DT_OEM_001;
1178                 break;
1179         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1180                 ha->device_type |= DT_ISP6312;
1181                 break;
1182         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1183                 ha->device_type |= DT_ISP6322;
1184                 break;
1185         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1186                 ha->device_type |= DT_ISP2422;
1187                 ha->device_type |= DT_ZIO_SUPPORTED;
1188                 break;
1189         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1190                 ha->device_type |= DT_ISP2432;
1191                 ha->device_type |= DT_ZIO_SUPPORTED;
1192                 break;
1193         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1194                 ha->device_type |= DT_ISP5422;
1195                 break;
1196         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1197                 ha->device_type |= DT_ISP5432;
1198                 break;
1199         }
1200 }
1201
1202 static int
1203 qla2x00_iospace_config(scsi_qla_host_t *ha)
1204 {
1205         unsigned long   pio, pio_len, pio_flags;
1206         unsigned long   mmio, mmio_len, mmio_flags;
1207
1208         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1209         pio = pci_resource_start(ha->pdev, 0);
1210         pio_len = pci_resource_len(ha->pdev, 0);
1211         pio_flags = pci_resource_flags(ha->pdev, 0);
1212         if (pio_flags & IORESOURCE_IO) {
1213                 if (pio_len < MIN_IOBASE_LEN) {
1214                         qla_printk(KERN_WARNING, ha,
1215                             "Invalid PCI I/O region size (%s)...\n",
1216                                 pci_name(ha->pdev));
1217                         pio = 0;
1218                 }
1219         } else {
1220                 qla_printk(KERN_WARNING, ha,
1221                     "region #0 not a PIO resource (%s)...\n",
1222                     pci_name(ha->pdev));
1223                 pio = 0;
1224         }
1225
1226         /* Use MMIO operations for all accesses. */
1227         mmio = pci_resource_start(ha->pdev, 1);
1228         mmio_len = pci_resource_len(ha->pdev, 1);
1229         mmio_flags = pci_resource_flags(ha->pdev, 1);
1230
1231         if (!(mmio_flags & IORESOURCE_MEM)) {
1232                 qla_printk(KERN_ERR, ha,
1233                     "region #0 not an MMIO resource (%s), aborting\n",
1234                     pci_name(ha->pdev));
1235                 goto iospace_error_exit;
1236         }
1237         if (mmio_len < MIN_IOBASE_LEN) {
1238                 qla_printk(KERN_ERR, ha,
1239                     "Invalid PCI mem region size (%s), aborting\n",
1240                         pci_name(ha->pdev));
1241                 goto iospace_error_exit;
1242         }
1243
1244         if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1245                 qla_printk(KERN_WARNING, ha,
1246                     "Failed to reserve PIO/MMIO regions (%s)\n",
1247                     pci_name(ha->pdev));
1248
1249                 goto iospace_error_exit;
1250         }
1251
1252         ha->pio_address = pio;
1253         ha->pio_length = pio_len;
1254         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1255         if (!ha->iobase) {
1256                 qla_printk(KERN_ERR, ha,
1257                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1258
1259                 goto iospace_error_exit;
1260         }
1261
1262         return (0);
1263
1264 iospace_error_exit:
1265         return (-ENOMEM);
1266 }
1267
1268 static void
1269 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1270 {
1271         unsigned long flags = 0;
1272         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1273
1274         spin_lock_irqsave(&ha->hardware_lock, flags);
1275         ha->interrupts_on = 1;
1276         /* enable risc and host interrupts */
1277         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1278         RD_REG_WORD(&reg->ictrl);
1279         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1280
1281 }
1282
1283 static void
1284 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1285 {
1286         unsigned long flags = 0;
1287         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1288
1289         spin_lock_irqsave(&ha->hardware_lock, flags);
1290         ha->interrupts_on = 0;
1291         /* disable risc and host interrupts */
1292         WRT_REG_WORD(&reg->ictrl, 0);
1293         RD_REG_WORD(&reg->ictrl);
1294         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1295 }
1296
1297 static void
1298 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1299 {
1300         unsigned long flags = 0;
1301         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1302
1303         spin_lock_irqsave(&ha->hardware_lock, flags);
1304         ha->interrupts_on = 1;
1305         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1306         RD_REG_DWORD(&reg->ictrl);
1307         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1308 }
1309
1310 static void
1311 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1312 {
1313         unsigned long flags = 0;
1314         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1315
1316         spin_lock_irqsave(&ha->hardware_lock, flags);
1317         ha->interrupts_on = 0;
1318         WRT_REG_DWORD(&reg->ictrl, 0);
1319         RD_REG_DWORD(&reg->ictrl);
1320         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1321 }
1322
1323 /*
1324  * PCI driver interface
1325  */
1326 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1327 {
1328         int     ret = -ENODEV;
1329         device_reg_t __iomem *reg;
1330         struct Scsi_Host *host;
1331         scsi_qla_host_t *ha;
1332         unsigned long   flags = 0;
1333         unsigned long   wait_switch = 0;
1334         char pci_info[20];
1335         char fw_str[30];
1336         fc_port_t *fcport;
1337         struct scsi_host_template *sht;
1338
1339         if (pci_enable_device(pdev))
1340                 goto probe_out;
1341
1342         sht = &qla2x00_driver_template;
1343         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1344             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1345                 sht = &qla24xx_driver_template;
1346         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1347         if (host == NULL) {
1348                 printk(KERN_WARNING
1349                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1350                 goto probe_disable_device;
1351         }
1352
1353         /* Clear our data area */
1354         ha = (scsi_qla_host_t *)host->hostdata;
1355         memset(ha, 0, sizeof(scsi_qla_host_t));
1356
1357         ha->pdev = pdev;
1358         ha->host = host;
1359         ha->host_no = host->host_no;
1360         ha->brd_info = brd_info;
1361         sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1362
1363         /* Set ISP-type information. */
1364         qla2x00_set_isp_flags(ha);
1365
1366         /* Configure PCI I/O space */
1367         ret = qla2x00_iospace_config(ha);
1368         if (ret)
1369                 goto probe_failed;
1370
1371         qla_printk(KERN_INFO, ha,
1372             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1373             ha->iobase);
1374
1375         spin_lock_init(&ha->hardware_lock);
1376
1377         ha->prev_topology = 0;
1378         ha->init_cb_size = sizeof(init_cb_t);
1379         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1380         ha->link_data_rate = LDR_UNKNOWN;
1381         ha->optrom_size = OPTROM_SIZE_2300;
1382
1383         /* Assign ISP specific operations. */
1384         ha->isp_ops.pci_config          = qla2100_pci_config;
1385         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1386         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1387         ha->isp_ops.config_rings        = qla2x00_config_rings;
1388         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1389         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1390         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1391         ha->isp_ops.load_risc           = qla2x00_load_risc;
1392         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1393         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1394         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1395         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1396         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1397         ha->isp_ops.abort_command       = qla2x00_abort_command;
1398         ha->isp_ops.abort_target        = qla2x00_abort_target;
1399         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1400         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1401         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1402         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1403         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1404         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1405         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1406         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1407         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1408         ha->isp_ops.ascii_fw_dump       = qla2100_ascii_fw_dump;
1409         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1410         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1411         if (IS_QLA2100(ha)) {
1412                 host->max_id = MAX_TARGETS_2100;
1413                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1414                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1415                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1416                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1417                 host->sg_tablesize = 32;
1418                 ha->gid_list_info_size = 4;
1419         } else if (IS_QLA2200(ha)) {
1420                 host->max_id = MAX_TARGETS_2200;
1421                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1422                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1423                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1424                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1425                 ha->gid_list_info_size = 4;
1426         } else if (IS_QLA23XX(ha)) {
1427                 host->max_id = MAX_TARGETS_2200;
1428                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1429                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1430                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1431                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1432                 ha->isp_ops.pci_config = qla2300_pci_config;
1433                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1434                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1435                 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1436                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1437                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1438                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1439                 ha->gid_list_info_size = 6;
1440                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1441                         ha->optrom_size = OPTROM_SIZE_2322;
1442         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1443                 host->max_id = MAX_TARGETS_2200;
1444                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1445                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1446                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1447                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1448                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1449                 ha->mgmt_svr_loop_id = 10;
1450                 ha->isp_ops.pci_config = qla24xx_pci_config;
1451                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1452                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1453                 ha->isp_ops.config_rings = qla24xx_config_rings;
1454                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1455                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1456                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1457                 ha->isp_ops.load_risc = qla24xx_load_risc;
1458 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1459                 if (ql2xfwloadflash)
1460                         ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1461 #endif
1462                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1463                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1464                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1465                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1466                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1467                 ha->isp_ops.abort_command = qla24xx_abort_command;
1468                 ha->isp_ops.abort_target = qla24xx_abort_target;
1469                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1470                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1471                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1472                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1473                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1474                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1475                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1476                 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1477                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1478                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1479                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1480                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1481                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1482                 ha->gid_list_info_size = 8;
1483                 ha->optrom_size = OPTROM_SIZE_24XX;
1484         }
1485         host->can_queue = ha->request_q_length + 128;
1486
1487         /* load the F/W, read paramaters, and init the H/W */
1488         ha->instance = num_hosts;
1489
1490         init_MUTEX(&ha->mbx_cmd_sem);
1491         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1492
1493         INIT_LIST_HEAD(&ha->list);
1494         INIT_LIST_HEAD(&ha->fcports);
1495         INIT_LIST_HEAD(&ha->rscn_fcports);
1496
1497         /*
1498          * These locks are used to prevent more than one CPU
1499          * from modifying the queue at the same time. The
1500          * higher level "host_lock" will reduce most
1501          * contention for these locks.
1502          */
1503         spin_lock_init(&ha->mbx_reg_lock);
1504
1505         qla2x00_config_dma_addressing(ha);
1506         if (qla2x00_mem_alloc(ha)) {
1507                 qla_printk(KERN_WARNING, ha,
1508                     "[ERROR] Failed to allocate memory for adapter\n");
1509
1510                 ret = -ENOMEM;
1511                 goto probe_failed;
1512         }
1513
1514         if (qla2x00_initialize_adapter(ha) &&
1515             !(ha->device_flags & DFLG_NO_CABLE)) {
1516
1517                 qla_printk(KERN_WARNING, ha,
1518                     "Failed to initialize adapter\n");
1519
1520                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1521                     "Adapter flags %x.\n",
1522                     ha->host_no, ha->device_flags));
1523
1524                 ret = -ENODEV;
1525                 goto probe_failed;
1526         }
1527
1528         /*
1529          * Startup the kernel thread for this host adapter
1530          */
1531         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1532                         "%s_dpc", ha->host_str);
1533         if (IS_ERR(ha->dpc_thread)) {
1534                 qla_printk(KERN_WARNING, ha,
1535                     "Unable to start DPC thread!\n");
1536                 ret = PTR_ERR(ha->dpc_thread);
1537                 goto probe_failed;
1538         }
1539
1540         host->this_id = 255;
1541         host->cmd_per_lun = 3;
1542         host->unique_id = ha->instance;
1543         host->max_cmd_len = MAX_CMDSZ;
1544         host->max_channel = MAX_BUSES - 1;
1545         host->max_lun = MAX_LUNS;
1546         host->transportt = qla2xxx_transport_template;
1547
1548         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1549             SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1550         if (ret) {
1551                 qla_printk(KERN_WARNING, ha,
1552                     "Failed to reserve interrupt %d already in use.\n",
1553                     pdev->irq);
1554                 goto probe_failed;
1555         }
1556         host->irq = pdev->irq;
1557
1558         /* Initialized the timer */
1559         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1560
1561         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1562             ha->host_no, ha));
1563
1564         ha->isp_ops.disable_intrs(ha);
1565
1566         spin_lock_irqsave(&ha->hardware_lock, flags);
1567         reg = ha->iobase;
1568         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1569                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1570                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1571         } else {
1572                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1573                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1574                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1575
1576                 /* Enable proper parity */
1577                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1578                         if (IS_QLA2300(ha))
1579                                 /* SRAM parity */
1580                                 WRT_REG_WORD(&reg->isp.hccr,
1581                                     (HCCR_ENABLE_PARITY + 0x1));
1582                         else
1583                                 /* SRAM, Instruction RAM and GP RAM parity */
1584                                 WRT_REG_WORD(&reg->isp.hccr,
1585                                     (HCCR_ENABLE_PARITY + 0x7));
1586                 }
1587         }
1588         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1589
1590         ha->isp_ops.enable_intrs(ha);
1591
1592         /* v2.19.5b6 */
1593         /*
1594          * Wait around max loop_reset_delay secs for the devices to come
1595          * on-line. We don't want Linux scanning before we are ready.
1596          *
1597          */
1598         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1599             time_before(jiffies,wait_switch) &&
1600              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1601              && (ha->device_flags & SWITCH_FOUND) ;) {
1602
1603                 qla2x00_check_fabric_devices(ha);
1604
1605                 msleep(10);
1606         }
1607
1608         pci_set_drvdata(pdev, ha);
1609         ha->flags.init_done = 1;
1610         num_hosts++;
1611
1612         ret = scsi_add_host(host, &pdev->dev);
1613         if (ret)
1614                 goto probe_failed;
1615
1616         qla2x00_alloc_sysfs_attr(ha);
1617
1618         qla2x00_init_host_attr(ha);
1619
1620         qla_printk(KERN_INFO, ha, "\n"
1621             " QLogic Fibre Channel HBA Driver: %s\n"
1622             "  QLogic %s - %s\n"
1623             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1624             qla2x00_version_str, ha->model_number,
1625             ha->model_desc ? ha->model_desc: "", pdev->device,
1626             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1627             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1628             ha->isp_ops.fw_version_str(ha, fw_str));
1629
1630         /* Go with fc_rport registration. */
1631         list_for_each_entry(fcport, &ha->fcports, list)
1632                 qla2x00_reg_remote_port(ha, fcport);
1633
1634         return 0;
1635
1636 probe_failed:
1637         qla2x00_free_device(ha);
1638
1639         scsi_host_put(host);
1640
1641 probe_disable_device:
1642         pci_disable_device(pdev);
1643
1644 probe_out:
1645         return ret;
1646 }
1647 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1648
1649 void qla2x00_remove_one(struct pci_dev *pdev)
1650 {
1651         scsi_qla_host_t *ha;
1652
1653         ha = pci_get_drvdata(pdev);
1654
1655         qla2x00_free_sysfs_attr(ha);
1656
1657         fc_remove_host(ha->host);
1658
1659         scsi_remove_host(ha->host);
1660
1661         qla2x00_free_device(ha);
1662
1663         scsi_host_put(ha->host);
1664
1665         pci_set_drvdata(pdev, NULL);
1666 }
1667 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1668
1669 static void
1670 qla2x00_free_device(scsi_qla_host_t *ha)
1671 {
1672         /* Abort any outstanding IO descriptors. */
1673         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1674                 qla2x00_cancel_io_descriptors(ha);
1675
1676         /* Disable timer */
1677         if (ha->timer_active)
1678                 qla2x00_stop_timer(ha);
1679
1680         /* Kill the kernel thread for this host */
1681         if (ha->dpc_thread) {
1682                 struct task_struct *t = ha->dpc_thread;
1683
1684                 /*
1685                  * qla2xxx_wake_dpc checks for ->dpc_thread
1686                  * so we need to zero it out.
1687                  */
1688                 ha->dpc_thread = NULL;
1689                 kthread_stop(t);
1690         }
1691
1692         /* Stop currently executing firmware. */
1693         qla2x00_stop_firmware(ha);
1694
1695         /* turn-off interrupts on the card */
1696         if (ha->interrupts_on)
1697                 ha->isp_ops.disable_intrs(ha);
1698
1699         qla2x00_mem_free(ha);
1700
1701         ha->flags.online = 0;
1702
1703         /* Detach interrupts */
1704         if (ha->pdev->irq)
1705                 free_irq(ha->pdev->irq, ha);
1706
1707         /* release io space registers  */
1708         if (ha->iobase)
1709                 iounmap(ha->iobase);
1710         pci_release_regions(ha->pdev);
1711
1712         pci_disable_device(ha->pdev);
1713 }
1714
1715 static inline void
1716 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1717     int defer)
1718 {
1719         unsigned long flags;
1720         struct fc_rport *rport;
1721
1722         if (!fcport->rport)
1723                 return;
1724
1725         rport = fcport->rport;
1726         if (defer) {
1727                 spin_lock_irqsave(&fcport->rport_lock, flags);
1728                 fcport->drport = rport;
1729                 fcport->rport = NULL;
1730                 *(fc_port_t **)rport->dd_data = NULL;
1731                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1732                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1733         } else {
1734                 spin_lock_irqsave(&fcport->rport_lock, flags);
1735                 fcport->rport = NULL;
1736                 *(fc_port_t **)rport->dd_data = NULL;
1737                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1738                 fc_remote_port_delete(rport);
1739         }
1740 }
1741
1742 /*
1743  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1744  *
1745  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1746  *
1747  * Return: None.
1748  *
1749  * Context:
1750  */
1751 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1752     int do_login, int defer)
1753 {
1754         if (atomic_read(&fcport->state) == FCS_ONLINE)
1755                 qla2x00_schedule_rport_del(ha, fcport, defer);
1756
1757         /*
1758          * We may need to retry the login, so don't change the state of the
1759          * port but do the retries.
1760          */
1761         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1762                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1763
1764         if (!do_login)
1765                 return;
1766
1767         if (fcport->login_retry == 0) {
1768                 fcport->login_retry = ha->login_retry_count;
1769                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1770
1771                 DEBUG(printk("scsi(%ld): Port login retry: "
1772                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1773                     "id = 0x%04x retry cnt=%d\n",
1774                     ha->host_no,
1775                     fcport->port_name[0],
1776                     fcport->port_name[1],
1777                     fcport->port_name[2],
1778                     fcport->port_name[3],
1779                     fcport->port_name[4],
1780                     fcport->port_name[5],
1781                     fcport->port_name[6],
1782                     fcport->port_name[7],
1783                     fcport->loop_id,
1784                     fcport->login_retry));
1785         }
1786 }
1787
1788 /*
1789  * qla2x00_mark_all_devices_lost
1790  *      Updates fcport state when device goes offline.
1791  *
1792  * Input:
1793  *      ha = adapter block pointer.
1794  *      fcport = port structure pointer.
1795  *
1796  * Return:
1797  *      None.
1798  *
1799  * Context:
1800  */
1801 void
1802 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1803 {
1804         fc_port_t *fcport;
1805
1806         list_for_each_entry(fcport, &ha->fcports, list) {
1807                 if (fcport->port_type != FCT_TARGET)
1808                         continue;
1809
1810                 /*
1811                  * No point in marking the device as lost, if the device is
1812                  * already DEAD.
1813                  */
1814                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1815                         continue;
1816                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1817                         qla2x00_schedule_rport_del(ha, fcport, defer);
1818                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1819         }
1820
1821         if (defer)
1822                 qla2xxx_wake_dpc(ha);
1823 }
1824
1825 /*
1826 * qla2x00_mem_alloc
1827 *      Allocates adapter memory.
1828 *
1829 * Returns:
1830 *      0  = success.
1831 *      1  = failure.
1832 */
1833 static uint8_t
1834 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1835 {
1836         char    name[16];
1837         uint8_t   status = 1;
1838         int     retry= 10;
1839
1840         do {
1841                 /*
1842                  * This will loop only once if everything goes well, else some
1843                  * number of retries will be performed to get around a kernel
1844                  * bug where available mem is not allocated until after a
1845                  * little delay and a retry.
1846                  */
1847                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1848                     (ha->request_q_length + 1) * sizeof(request_t),
1849                     &ha->request_dma, GFP_KERNEL);
1850                 if (ha->request_ring == NULL) {
1851                         qla_printk(KERN_WARNING, ha,
1852                             "Memory Allocation failed - request_ring\n");
1853
1854                         qla2x00_mem_free(ha);
1855                         msleep(100);
1856
1857                         continue;
1858                 }
1859
1860                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1861                     (ha->response_q_length + 1) * sizeof(response_t),
1862                     &ha->response_dma, GFP_KERNEL);
1863                 if (ha->response_ring == NULL) {
1864                         qla_printk(KERN_WARNING, ha,
1865                             "Memory Allocation failed - response_ring\n");
1866
1867                         qla2x00_mem_free(ha);
1868                         msleep(100);
1869
1870                         continue;
1871                 }
1872
1873                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1874                     &ha->gid_list_dma, GFP_KERNEL);
1875                 if (ha->gid_list == NULL) {
1876                         qla_printk(KERN_WARNING, ha,
1877                             "Memory Allocation failed - gid_list\n");
1878
1879                         qla2x00_mem_free(ha);
1880                         msleep(100);
1881
1882                         continue;
1883                 }
1884
1885                 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1886                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1887                     DMA_POOL_SIZE, 8, 0);
1888                 if (ha->s_dma_pool == NULL) {
1889                         qla_printk(KERN_WARNING, ha,
1890                             "Memory Allocation failed - s_dma_pool\n");
1891
1892                         qla2x00_mem_free(ha);
1893                         msleep(100);
1894
1895                         continue;
1896                 }
1897
1898                 /* get consistent memory allocated for init control block */
1899                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1900                     &ha->init_cb_dma);
1901                 if (ha->init_cb == NULL) {
1902                         qla_printk(KERN_WARNING, ha,
1903                             "Memory Allocation failed - init_cb\n");
1904
1905                         qla2x00_mem_free(ha);
1906                         msleep(100);
1907
1908                         continue;
1909                 }
1910                 memset(ha->init_cb, 0, ha->init_cb_size);
1911
1912                 /* Get consistent memory allocated for Get Port Database cmd */
1913                 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1914                     &ha->iodesc_pd_dma);
1915                 if (ha->iodesc_pd == NULL) {
1916                         /* error */
1917                         qla_printk(KERN_WARNING, ha,
1918                             "Memory Allocation failed - iodesc_pd\n");
1919
1920                         qla2x00_mem_free(ha);
1921                         msleep(100);
1922
1923                         continue;
1924                 }
1925                 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1926
1927                 /* Allocate ioctl related memory. */
1928                 if (qla2x00_alloc_ioctl_mem(ha)) {
1929                         qla_printk(KERN_WARNING, ha,
1930                             "Memory Allocation failed - ioctl_mem\n");
1931
1932                         qla2x00_mem_free(ha);
1933                         msleep(100);
1934
1935                         continue;
1936                 }
1937
1938                 if (qla2x00_allocate_sp_pool(ha)) {
1939                         qla_printk(KERN_WARNING, ha,
1940                             "Memory Allocation failed - "
1941                             "qla2x00_allocate_sp_pool()\n");
1942
1943                         qla2x00_mem_free(ha);
1944                         msleep(100);
1945
1946                         continue;
1947                 }
1948
1949                 /* Allocate memory for SNS commands */
1950                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1951                         /* Get consistent memory allocated for SNS commands */
1952                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1953                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1954                             GFP_KERNEL);
1955                         if (ha->sns_cmd == NULL) {
1956                                 /* error */
1957                                 qla_printk(KERN_WARNING, ha,
1958                                     "Memory Allocation failed - sns_cmd\n");
1959
1960                                 qla2x00_mem_free(ha);
1961                                 msleep(100);
1962
1963                                 continue;
1964                         }
1965                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1966                 } else {
1967                         /* Get consistent memory allocated for MS IOCB */
1968                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1969                             &ha->ms_iocb_dma);
1970                         if (ha->ms_iocb == NULL) {
1971                                 /* error */
1972                                 qla_printk(KERN_WARNING, ha,
1973                                     "Memory Allocation failed - ms_iocb\n");
1974
1975                                 qla2x00_mem_free(ha);
1976                                 msleep(100);
1977
1978                                 continue;
1979                         }
1980                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1981
1982                         /*
1983                          * Get consistent memory allocated for CT SNS
1984                          * commands
1985                          */
1986                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1987                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1988                             GFP_KERNEL);
1989                         if (ha->ct_sns == NULL) {
1990                                 /* error */
1991                                 qla_printk(KERN_WARNING, ha,
1992                                     "Memory Allocation failed - ct_sns\n");
1993
1994                                 qla2x00_mem_free(ha);
1995                                 msleep(100);
1996
1997                                 continue;
1998                         }
1999                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2000                 }
2001
2002                 /* Done all allocations without any error. */
2003                 status = 0;
2004
2005         } while (retry-- && status != 0);
2006
2007         if (status) {
2008                 printk(KERN_WARNING
2009                         "%s(): **** FAILED ****\n", __func__);
2010         }
2011
2012         return(status);
2013 }
2014
2015 /*
2016 * qla2x00_mem_free
2017 *      Frees all adapter allocated memory.
2018 *
2019 * Input:
2020 *      ha = adapter block pointer.
2021 */
2022 static void
2023 qla2x00_mem_free(scsi_qla_host_t *ha)
2024 {
2025         struct list_head        *fcpl, *fcptemp;
2026         fc_port_t       *fcport;
2027
2028         if (ha == NULL) {
2029                 /* error */
2030                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2031                 return;
2032         }
2033
2034         /* free ioctl memory */
2035         qla2x00_free_ioctl_mem(ha);
2036
2037         /* free sp pool */
2038         qla2x00_free_sp_pool(ha);
2039
2040         if (ha->sns_cmd)
2041                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2042                     ha->sns_cmd, ha->sns_cmd_dma);
2043
2044         if (ha->ct_sns)
2045                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2046                     ha->ct_sns, ha->ct_sns_dma);
2047
2048         if (ha->ms_iocb)
2049                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2050
2051         if (ha->iodesc_pd)
2052                 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2053
2054         if (ha->init_cb)
2055                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2056
2057         if (ha->s_dma_pool)
2058                 dma_pool_destroy(ha->s_dma_pool);
2059
2060         if (ha->gid_list)
2061                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2062                     ha->gid_list_dma);
2063
2064         if (ha->response_ring)
2065                 dma_free_coherent(&ha->pdev->dev,
2066                     (ha->response_q_length + 1) * sizeof(response_t),
2067                     ha->response_ring, ha->response_dma);
2068
2069         if (ha->request_ring)
2070                 dma_free_coherent(&ha->pdev->dev,
2071                     (ha->request_q_length + 1) * sizeof(request_t),
2072                     ha->request_ring, ha->request_dma);
2073
2074         ha->sns_cmd = NULL;
2075         ha->sns_cmd_dma = 0;
2076         ha->ct_sns = NULL;
2077         ha->ct_sns_dma = 0;
2078         ha->ms_iocb = NULL;
2079         ha->ms_iocb_dma = 0;
2080         ha->iodesc_pd = NULL;
2081         ha->iodesc_pd_dma = 0;
2082         ha->init_cb = NULL;
2083         ha->init_cb_dma = 0;
2084
2085         ha->s_dma_pool = NULL;
2086
2087         ha->gid_list = NULL;
2088         ha->gid_list_dma = 0;
2089
2090         ha->response_ring = NULL;
2091         ha->response_dma = 0;
2092         ha->request_ring = NULL;
2093         ha->request_dma = 0;
2094
2095         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2096                 fcport = list_entry(fcpl, fc_port_t, list);
2097
2098                 /* fc ports */
2099                 list_del_init(&fcport->list);
2100                 kfree(fcport);
2101         }
2102         INIT_LIST_HEAD(&ha->fcports);
2103
2104         if (ha->fw_dump)
2105                 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2106
2107         vfree(ha->fw_dump24);
2108
2109         vfree(ha->fw_dump_buffer);
2110
2111         ha->fw_dump = NULL;
2112         ha->fw_dump24 = NULL;
2113         ha->fw_dumped = 0;
2114         ha->fw_dump_reading = 0;
2115         ha->fw_dump_buffer = NULL;
2116
2117         vfree(ha->optrom_buffer);
2118 }
2119
2120 /*
2121  * qla2x00_allocate_sp_pool
2122  *       This routine is called during initialization to allocate
2123  *       memory for local srb_t.
2124  *
2125  * Input:
2126  *       ha   = adapter block pointer.
2127  *
2128  * Context:
2129  *      Kernel context.
2130  */
2131 static int
2132 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2133 {
2134         int      rval;
2135
2136         rval = QLA_SUCCESS;
2137         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2138         if (ha->srb_mempool == NULL) {
2139                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2140                 rval = QLA_FUNCTION_FAILED;
2141         }
2142         return (rval);
2143 }
2144
2145 /*
2146  *  This routine frees all adapter allocated memory.
2147  *
2148  */
2149 static void
2150 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2151 {
2152         if (ha->srb_mempool) {
2153                 mempool_destroy(ha->srb_mempool);
2154                 ha->srb_mempool = NULL;
2155         }
2156 }
2157
2158 /**************************************************************************
2159 * qla2x00_do_dpc
2160 *   This kernel thread is a task that is schedule by the interrupt handler
2161 *   to perform the background processing for interrupts.
2162 *
2163 * Notes:
2164 * This task always run in the context of a kernel thread.  It
2165 * is kick-off by the driver's detect code and starts up
2166 * up one per adapter. It immediately goes to sleep and waits for
2167 * some fibre event.  When either the interrupt handler or
2168 * the timer routine detects a event it will one of the task
2169 * bits then wake us up.
2170 **************************************************************************/
2171 static int
2172 qla2x00_do_dpc(void *data)
2173 {
2174         scsi_qla_host_t *ha;
2175         fc_port_t       *fcport;
2176         uint8_t         status;
2177         uint16_t        next_loopid;
2178
2179         ha = (scsi_qla_host_t *)data;
2180
2181         set_user_nice(current, -20);
2182
2183         while (!kthread_should_stop()) {
2184                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2185
2186                 set_current_state(TASK_INTERRUPTIBLE);
2187                 schedule();
2188                 __set_current_state(TASK_RUNNING);
2189
2190                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2191
2192                 /* Initialization not yet finished. Don't do anything yet. */
2193                 if (!ha->flags.init_done)
2194                         continue;
2195
2196                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2197
2198                 ha->dpc_active = 1;
2199
2200                 if (ha->flags.mbox_busy) {
2201                         ha->dpc_active = 0;
2202                         continue;
2203                 }
2204
2205                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2206
2207                         DEBUG(printk("scsi(%ld): dpc: sched "
2208                             "qla2x00_abort_isp ha = %p\n",
2209                             ha->host_no, ha));
2210                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2211                             &ha->dpc_flags))) {
2212
2213                                 if (qla2x00_abort_isp(ha)) {
2214                                         /* failed. retry later */
2215                                         set_bit(ISP_ABORT_NEEDED,
2216                                             &ha->dpc_flags);
2217                                 }
2218                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2219                         }
2220                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2221                             ha->host_no));
2222                 }
2223
2224                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2225                         qla2x00_update_fcports(ha);
2226
2227                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2228                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2229                             ha->host_no));
2230                         qla2x00_loop_reset(ha);
2231                 }
2232
2233                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2234                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2235
2236                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2237                             ha->host_no));
2238
2239                         qla2x00_rst_aen(ha);
2240                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2241                 }
2242
2243                 /* Retry each device up to login retry count */
2244                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2245                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2246                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2247
2248                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2249                             ha->host_no));
2250
2251                         next_loopid = 0;
2252                         list_for_each_entry(fcport, &ha->fcports, list) {
2253                                 if (fcport->port_type != FCT_TARGET)
2254                                         continue;
2255
2256                                 /*
2257                                  * If the port is not ONLINE then try to login
2258                                  * to it if we haven't run out of retries.
2259                                  */
2260                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2261                                     fcport->login_retry) {
2262
2263                                         fcport->login_retry--;
2264                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2265                                                 if (fcport->flags &
2266                                                     FCF_TAPE_PRESENT)
2267                                                         ha->isp_ops.fabric_logout(
2268                                                             ha, fcport->loop_id,
2269                                                             fcport->d_id.b.domain,
2270                                                             fcport->d_id.b.area,
2271                                                             fcport->d_id.b.al_pa);
2272                                                 status = qla2x00_fabric_login(
2273                                                     ha, fcport, &next_loopid);
2274                                         } else
2275                                                 status =
2276                                                     qla2x00_local_device_login(
2277                                                         ha, fcport);
2278
2279                                         if (status == QLA_SUCCESS) {
2280                                                 fcport->old_loop_id = fcport->loop_id;
2281
2282                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2283                                                     ha->host_no, fcport->loop_id));
2284
2285                                                 qla2x00_update_fcport(ha,
2286                                                     fcport);
2287                                         } else if (status == 1) {
2288                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2289                                                 /* retry the login again */
2290                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2291                                                     ha->host_no,
2292                                                     fcport->login_retry, fcport->loop_id));
2293                                         } else {
2294                                                 fcport->login_retry = 0;
2295                                         }
2296                                 }
2297                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2298                                         break;
2299                         }
2300                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2301                             ha->host_no));
2302                 }
2303
2304                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2305                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2306
2307                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2308                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2309                             ha->host_no));
2310
2311                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2312
2313                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2314                             ha->host_no));
2315                 }
2316
2317                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2318
2319                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2320                             ha->host_no));
2321
2322                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2323                             &ha->dpc_flags))) {
2324
2325                                 qla2x00_loop_resync(ha);
2326
2327                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2328                         }
2329
2330                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2331                             ha->host_no));
2332                 }
2333
2334                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2335
2336                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2337                             ha->host_no));
2338
2339                         qla2x00_rescan_fcports(ha);
2340
2341                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2342                             "end.\n",
2343                             ha->host_no));
2344                 }
2345
2346                 if (!ha->interrupts_on)
2347                         ha->isp_ops.enable_intrs(ha);
2348
2349                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2350                         ha->isp_ops.beacon_blink(ha);
2351
2352                 ha->dpc_active = 0;
2353         } /* End of while(1) */
2354
2355         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2356
2357         /*
2358          * Make sure that nobody tries to wake us up again.
2359          */
2360         ha->dpc_active = 0;
2361
2362         return 0;
2363 }
2364
2365 void
2366 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2367 {
2368         if (ha->dpc_thread)
2369                 wake_up_process(ha->dpc_thread);
2370 }
2371
2372 /*
2373 *  qla2x00_rst_aen
2374 *      Processes asynchronous reset.
2375 *
2376 * Input:
2377 *      ha  = adapter block pointer.
2378 */
2379 static void
2380 qla2x00_rst_aen(scsi_qla_host_t *ha)
2381 {
2382         if (ha->flags.online && !ha->flags.reset_active &&
2383             !atomic_read(&ha->loop_down_timer) &&
2384             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2385                 do {
2386                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2387
2388                         /*
2389                          * Issue marker command only when we are going to start
2390                          * the I/O.
2391                          */
2392                         ha->marker_needed = 1;
2393                 } while (!atomic_read(&ha->loop_down_timer) &&
2394                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2395         }
2396 }
2397
2398 static void
2399 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2400 {
2401         struct scsi_cmnd *cmd = sp->cmd;
2402
2403         if (sp->flags & SRB_DMA_VALID) {
2404                 if (cmd->use_sg) {
2405                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2406                             cmd->use_sg, cmd->sc_data_direction);
2407                 } else if (cmd->request_bufflen) {
2408                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2409                             cmd->request_bufflen, cmd->sc_data_direction);
2410                 }
2411                 sp->flags &= ~SRB_DMA_VALID;
2412         }
2413         CMD_SP(cmd) = NULL;
2414 }
2415
2416 void
2417 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2418 {
2419         struct scsi_cmnd *cmd = sp->cmd;
2420
2421         qla2x00_sp_free_dma(ha, sp);
2422
2423         mempool_free(sp, ha->srb_mempool);
2424
2425         cmd->scsi_done(cmd);
2426 }
2427
2428 /**************************************************************************
2429 *   qla2x00_timer
2430 *
2431 * Description:
2432 *   One second timer
2433 *
2434 * Context: Interrupt
2435 ***************************************************************************/
2436 static void
2437 qla2x00_timer(scsi_qla_host_t *ha)
2438 {
2439         unsigned long   cpu_flags = 0;
2440         fc_port_t       *fcport;
2441         int             start_dpc = 0;
2442         int             index;
2443         srb_t           *sp;
2444         int             t;
2445
2446         /*
2447          * Ports - Port down timer.
2448          *
2449          * Whenever, a port is in the LOST state we start decrementing its port
2450          * down timer every second until it reaches zero. Once  it reaches zero
2451          * the port it marked DEAD.
2452          */
2453         t = 0;
2454         list_for_each_entry(fcport, &ha->fcports, list) {
2455                 if (fcport->port_type != FCT_TARGET)
2456                         continue;
2457
2458                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2459
2460                         if (atomic_read(&fcport->port_down_timer) == 0)
2461                                 continue;
2462
2463                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2464                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2465
2466                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2467                             "%d remaining\n",
2468                             ha->host_no,
2469                             t, atomic_read(&fcport->port_down_timer)));
2470                 }
2471                 t++;
2472         } /* End of for fcport  */
2473
2474
2475         /* Loop down handler. */
2476         if (atomic_read(&ha->loop_down_timer) > 0 &&
2477             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2478
2479                 if (atomic_read(&ha->loop_down_timer) ==
2480                     ha->loop_down_abort_time) {
2481
2482                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2483                             "queues before time expire\n",
2484                             ha->host_no));
2485
2486                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2487                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2488
2489                         /* Schedule an ISP abort to return any tape commands. */
2490                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2491                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2492                             index++) {
2493                                 fc_port_t *sfcp;
2494
2495                                 sp = ha->outstanding_cmds[index];
2496                                 if (!sp)
2497                                         continue;
2498                                 sfcp = sp->fcport;
2499                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2500                                         continue;
2501
2502                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2503                                 break;
2504                         }
2505                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2506
2507                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2508                         start_dpc++;
2509                 }
2510
2511                 /* if the loop has been down for 4 minutes, reinit adapter */
2512                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2513                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2514                             "restarting queues.\n",
2515                             ha->host_no));
2516
2517                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2518                         start_dpc++;
2519
2520                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2521                                 DEBUG(printk("scsi(%ld): Loop down - "
2522                                     "aborting ISP.\n",
2523                                     ha->host_no));
2524                                 qla_printk(KERN_WARNING, ha,
2525                                     "Loop down - aborting ISP.\n");
2526
2527                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2528                         }
2529                 }
2530                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2531                     ha->host_no,
2532                     atomic_read(&ha->loop_down_timer)));
2533         }
2534
2535         /* Check if beacon LED needs to be blinked */
2536         if (ha->beacon_blink_led == 1) {
2537                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2538                 start_dpc++;
2539         }
2540
2541         /* Schedule the DPC routine if needed */
2542         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2543             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2544             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2545             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2546             start_dpc ||
2547             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2548             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2549             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2550             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2551                 qla2xxx_wake_dpc(ha);
2552
2553         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2554 }
2555
2556 /* XXX(hch): crude hack to emulate a down_timeout() */
2557 int
2558 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2559 {
2560         const unsigned int step = 100; /* msecs */
2561         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2562
2563         do {
2564                 if (!down_trylock(sema))
2565                         return 0;
2566                 if (msleep_interruptible(step))
2567                         break;
2568         } while (--iterations >= 0);
2569
2570         return -ETIMEDOUT;
2571 }
2572
2573 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2574
2575 #define qla2x00_release_firmware()      do { } while (0)
2576 #define qla2x00_pci_module_init()       (0)
2577 #define qla2x00_pci_module_exit()       do { } while (0)
2578
2579 #else   /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2580
2581 /* Firmware interface routines. */
2582
2583 #define FW_BLOBS        5
2584 #define FW_ISP21XX      0
2585 #define FW_ISP22XX      1
2586 #define FW_ISP2300      2
2587 #define FW_ISP2322      3
2588 #define FW_ISP24XX      4
2589
2590 static DECLARE_MUTEX(qla_fw_lock);
2591
2592 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2593         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2594         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2595         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2596         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2597         { .name = "ql2400_fw.bin", },
2598 };
2599
2600 struct fw_blob *
2601 qla2x00_request_firmware(scsi_qla_host_t *ha)
2602 {
2603         struct fw_blob *blob;
2604
2605         blob = NULL;
2606         if (IS_QLA2100(ha)) {
2607                 blob = &qla_fw_blobs[FW_ISP21XX];
2608         } else if (IS_QLA2200(ha)) {
2609                 blob = &qla_fw_blobs[FW_ISP22XX];
2610         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2611                 blob = &qla_fw_blobs[FW_ISP2300];
2612         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2613                 blob = &qla_fw_blobs[FW_ISP2322];
2614         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2615                 blob = &qla_fw_blobs[FW_ISP24XX];
2616         }
2617
2618         down(&qla_fw_lock);
2619         if (blob->fw)
2620                 goto out;
2621
2622         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2623                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2624                     "(%s).\n", ha->host_no, blob->name));
2625                 blob->fw = NULL;
2626                 blob = NULL;
2627                 goto out;
2628         }
2629
2630 out:
2631         up(&qla_fw_lock);
2632         return blob;
2633 }
2634
2635 static void
2636 qla2x00_release_firmware(void)
2637 {
2638         int idx;
2639
2640         down(&qla_fw_lock);
2641         for (idx = 0; idx < FW_BLOBS; idx++)
2642                 if (qla_fw_blobs[idx].fw)
2643                         release_firmware(qla_fw_blobs[idx].fw);
2644         up(&qla_fw_lock);
2645 }
2646
2647 static struct qla_board_info qla_board_tbl = {
2648         .drv_name       = "qla2xxx",
2649 };
2650
2651 static struct pci_device_id qla2xxx_pci_tbl[] = {
2652         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2653                 PCI_ANY_ID, PCI_ANY_ID, },
2654         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2655                 PCI_ANY_ID, PCI_ANY_ID, },
2656         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2657                 PCI_ANY_ID, PCI_ANY_ID, },
2658         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2659                 PCI_ANY_ID, PCI_ANY_ID, },
2660         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2661                 PCI_ANY_ID, PCI_ANY_ID, },
2662         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2663                 PCI_ANY_ID, PCI_ANY_ID, },
2664         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2665                 PCI_ANY_ID, PCI_ANY_ID, },
2666         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2667                 PCI_ANY_ID, PCI_ANY_ID, },
2668         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2669                 PCI_ANY_ID, PCI_ANY_ID, },
2670         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422,
2671                 PCI_ANY_ID, PCI_ANY_ID, },
2672         { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432,
2673                 PCI_ANY_ID, PCI_ANY_ID, },
2674         { 0 },
2675 };
2676 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2677
2678 static int __devinit
2679 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2680 {
2681         return qla2x00_probe_one(pdev, &qla_board_tbl);
2682 }
2683
2684 static void __devexit
2685 qla2xxx_remove_one(struct pci_dev *pdev)
2686 {
2687         qla2x00_remove_one(pdev);
2688 }
2689
2690 static struct pci_driver qla2xxx_pci_driver = {
2691         .name           = "qla2xxx",
2692         .driver         = {
2693                 .owner          = THIS_MODULE,
2694         },
2695         .id_table       = qla2xxx_pci_tbl,
2696         .probe          = qla2xxx_probe_one,
2697         .remove         = __devexit_p(qla2xxx_remove_one),
2698 };
2699
2700 static inline int
2701 qla2x00_pci_module_init(void)
2702 {
2703         return pci_module_init(&qla2xxx_pci_driver);
2704 }
2705
2706 static inline void
2707 qla2x00_pci_module_exit(void)
2708 {
2709         pci_unregister_driver(&qla2xxx_pci_driver);
2710 }
2711
2712 #endif
2713
2714 /**
2715  * qla2x00_module_init - Module initialization.
2716  **/
2717 static int __init
2718 qla2x00_module_init(void)
2719 {
2720         int ret = 0;
2721
2722         /* Allocate cache for SRBs. */
2723         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2724             SLAB_HWCACHE_ALIGN, NULL, NULL);
2725         if (srb_cachep == NULL) {
2726                 printk(KERN_ERR
2727                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2728                 return -ENOMEM;
2729         }
2730
2731         /* Derive version string. */
2732         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2733 #if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2734         strcat(qla2x00_version_str, "-fw");
2735 #endif
2736 #if DEBUG_QLA2100
2737         strcat(qla2x00_version_str, "-debug");
2738 #endif
2739         qla2xxx_transport_template =
2740             fc_attach_transport(&qla2xxx_transport_functions);
2741         if (!qla2xxx_transport_template)
2742                 return -ENODEV;
2743
2744         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2745         ret = qla2x00_pci_module_init();
2746         if (ret) {
2747                 kmem_cache_destroy(srb_cachep);
2748                 fc_release_transport(qla2xxx_transport_template);
2749         }
2750         return ret;
2751 }
2752
2753 /**
2754  * qla2x00_module_exit - Module cleanup.
2755  **/
2756 static void __exit
2757 qla2x00_module_exit(void)
2758 {
2759         qla2x00_pci_module_exit();
2760         qla2x00_release_firmware();
2761         kmem_cache_destroy(srb_cachep);
2762         fc_release_transport(qla2xxx_transport_template);
2763 }
2764
2765 module_init(qla2x00_module_init);
2766 module_exit(qla2x00_module_exit);
2767
2768 MODULE_AUTHOR("QLogic Corporation");
2769 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2770 MODULE_LICENSE("GPL");
2771 MODULE_VERSION(QLA2XXX_VERSION);