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

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns"
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches."
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 int ql2xallocfwdump = 1;
  58 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  59 MODULE_PARM_DESC(ql2xallocfwdump,
  60                 "Option to enable allocation of memory for a firmware dump "
  61                 "during HBA initialization.  Memory allocation requirements "
  62                 "vary by ISP type.  Default is 1 - allocate memory.");
  63
  64 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 /*
  75  * SCSI host template entry points
  76  */
  77 static int qla2xxx_slave_configure(struct scsi_device * device);
  78 static int qla2xxx_slave_alloc(struct scsi_device *);
  79 static void qla2xxx_slave_destroy(struct scsi_device *);
  80 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  81                 void (*fn)(struct scsi_cmnd *));
  82 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  83                 void (*fn)(struct scsi_cmnd *));
  84 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  85 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  86 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  87 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  88 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  89 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  90
  91 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  92 static int qla2x00_change_queue_type(struct scsi_device *, int);
  93
  94 static struct scsi_host_template qla2x00_driver_template = {
  95         .module                 = THIS_MODULE,
  96         .name                   = QLA2XXX_DRIVER_NAME,
  97         .queuecommand           = qla2x00_queuecommand,
  98
  99         .eh_abort_handler       = qla2xxx_eh_abort,
 100         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 101         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 102         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 103
 104         .slave_configure        = qla2xxx_slave_configure,
 105
 106         .slave_alloc            = qla2xxx_slave_alloc,
 107         .slave_destroy          = qla2xxx_slave_destroy,
 108         .change_queue_depth     = qla2x00_change_queue_depth,
 109         .change_queue_type      = qla2x00_change_queue_type,
 110         .this_id                = -1,
 111         .cmd_per_lun            = 3,
 112         .use_clustering         = ENABLE_CLUSTERING,
 113         .sg_tablesize           = SG_ALL,
 114
 115         /*
 116          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 117          * which equates to 0x800000 sectors.
 118          */
 119         .max_sectors            = 0xFFFF,
 120         .shost_attrs            = qla2x00_host_attrs,
 121 };
 122
 123 static struct scsi_host_template qla24xx_driver_template = {
 124         .module                 = THIS_MODULE,
 125         .name                   = QLA2XXX_DRIVER_NAME,
 126         .queuecommand           = qla24xx_queuecommand,
 127
 128         .eh_abort_handler       = qla2xxx_eh_abort,
 129         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 130         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 131         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 132
 133         .slave_configure        = qla2xxx_slave_configure,
 134
 135         .slave_alloc            = qla2xxx_slave_alloc,
 136         .slave_destroy          = qla2xxx_slave_destroy,
 137         .change_queue_depth     = qla2x00_change_queue_depth,
 138         .change_queue_type      = qla2x00_change_queue_type,
 139         .this_id                = -1,
 140         .cmd_per_lun            = 3,
 141         .use_clustering         = ENABLE_CLUSTERING,
 142         .sg_tablesize           = SG_ALL,
 143
 144         .max_sectors            = 0xFFFF,
 145         .shost_attrs            = qla2x00_host_attrs,
 146 };
 147
 148 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 149
 150 /* TODO Convert to inlines
 151  *
 152  * Timer routines
 153  */
 154 #define WATCH_INTERVAL          1       /* number of seconds */
 155
 156 static void qla2x00_timer(scsi_qla_host_t *);
 157
 158 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 159     void *, unsigned long);
 160 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 161 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 162
 163 static inline void
 164 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 165 {
 166         init_timer(&ha->timer);
 167         ha->timer.expires = jiffies + interval * HZ;
 168         ha->timer.data = (unsigned long)ha;
 169         ha->timer.function = (void (*)(unsigned long))func;
 170         add_timer(&ha->timer);
 171         ha->timer_active = 1;
 172 }
 173
 174 static inline void
 175 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 176 {
 177         mod_timer(&ha->timer, jiffies + interval * HZ);
 178 }
 179
 180 static __inline__ void
 181 qla2x00_stop_timer(scsi_qla_host_t *ha)
 182 {
 183         del_timer_sync(&ha->timer);
 184         ha->timer_active = 0;
 185 }
 186
 187 static int qla2x00_do_dpc(void *data);
 188
 189 static void qla2x00_rst_aen(scsi_qla_host_t *);
 190
 191 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 192 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 193 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 194 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 195 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 196 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 197
 198 /* -------------------------------------------------------------------------- */
 199
 200 static char *
 201 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 202 {
 203         static char *pci_bus_modes[] = {
 204                 "33", "66", "100", "133",
 205         };
 206         uint16_t pci_bus;
 207
 208         strcpy(str, "PCI");
 209         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 210         if (pci_bus) {
 211                 strcat(str, "-X (");
 212                 strcat(str, pci_bus_modes[pci_bus]);
 213         } else {
 214                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 215                 strcat(str, " (");
 216                 strcat(str, pci_bus_modes[pci_bus]);
 217         }
 218         strcat(str, " MHz)");
 219
 220         return (str);
 221 }
 222
 223 static char *
 224 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 225 {
 226         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 227         uint32_t pci_bus;
 228         int pcie_reg;
 229
 230         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 231         if (pcie_reg) {
 232                 char lwstr[6];
 233                 uint16_t pcie_lstat, lspeed, lwidth;
 234
 235                 pcie_reg += 0x12;
 236                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 237                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 238                 lwidth = (pcie_lstat &
 239                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 240
 241                 strcpy(str, "PCIe (");
 242                 if (lspeed == 1)
 243                         strcat(str, "2.5Gb/s ");
 244                 else
 245                         strcat(str, "<unknown> ");
 246                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 247                 strcat(str, lwstr);
 248
 249                 return str;
 250         }
 251
 252         strcpy(str, "PCI");
 253         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 254         if (pci_bus == 0 || pci_bus == 8) {
 255                 strcat(str, " (");
 256                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 257         } else {
 258                 strcat(str, "-X ");
 259                 if (pci_bus & BIT_2)
 260                         strcat(str, "Mode 2");
 261                 else
 262                         strcat(str, "Mode 1");
 263                 strcat(str, " (");
 264                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 265         }
 266         strcat(str, " MHz)");
 267
 268         return str;
 269 }
 270
 271 char *
 272 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 273 {
 274         char un_str[10];
 275
 276         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 277             ha->fw_minor_version,
 278             ha->fw_subminor_version);
 279
 280         if (ha->fw_attributes & BIT_9) {
 281                 strcat(str, "FLX");
 282                 return (str);
 283         }
 284
 285         switch (ha->fw_attributes & 0xFF) {
 286         case 0x7:
 287                 strcat(str, "EF");
 288                 break;
 289         case 0x17:
 290                 strcat(str, "TP");
 291                 break;
 292         case 0x37:
 293                 strcat(str, "IP");
 294                 break;
 295         case 0x77:
 296                 strcat(str, "VI");
 297                 break;
 298         default:
 299                 sprintf(un_str, "(%x)", ha->fw_attributes);
 300                 strcat(str, un_str);
 301                 break;
 302         }
 303         if (ha->fw_attributes & 0x100)
 304                 strcat(str, "X");
 305
 306         return (str);
 307 }
 308
 309 char *
 310 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 311 {
 312         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 313             ha->fw_minor_version,
 314             ha->fw_subminor_version);
 315
 316         if (ha->fw_attributes & BIT_0)
 317                 strcat(str, "[Class 2] ");
 318         if (ha->fw_attributes & BIT_1)
 319                 strcat(str, "[IP] ");
 320         if (ha->fw_attributes & BIT_2)
 321                 strcat(str, "[Multi-ID] ");
 322         if (ha->fw_attributes & BIT_13)
 323                 strcat(str, "[Experimental]");
 324         return str;
 325 }
 326
 327 static inline srb_t *
 328 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 329     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 330 {
 331         srb_t *sp;
 332
 333         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 334         if (!sp)
 335                 return sp;
 336
 337         sp->ha = ha;
 338         sp->fcport = fcport;
 339         sp->cmd = cmd;
 340         sp->flags = 0;
 341         CMD_SP(cmd) = (void *)sp;
 342         cmd->scsi_done = done;
 343
 344         return sp;
 345 }
 346
 347 static int
 348 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 349 {
 350         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 351         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 352         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 353         srb_t *sp;
 354         int rval;
 355
 356         rval = fc_remote_port_chkready(rport);
 357         if (rval) {
 358                 cmd->result = rval;
 359                 goto qc_fail_command;
 360         }
 361
 362         /* Close window on fcport/rport state-transitioning. */
 363         if (!*(fc_port_t **)rport->dd_data) {
 364                 cmd->result = DID_IMM_RETRY << 16;
 365                 goto qc_fail_command;
 366         }
 367
 368         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 369                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 370                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 371                         cmd->result = DID_NO_CONNECT << 16;
 372                         goto qc_fail_command;
 373                 }
 374                 goto qc_host_busy;
 375         }
 376
 377         spin_unlock_irq(ha->host->host_lock);
 378
 379         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 380         if (!sp)
 381                 goto qc_host_busy_lock;
 382
 383         rval = qla2x00_start_scsi(sp);
 384         if (rval != QLA_SUCCESS)
 385                 goto qc_host_busy_free_sp;
 386
 387         spin_lock_irq(ha->host->host_lock);
 388
 389         return 0;
 390
 391 qc_host_busy_free_sp:
 392         qla2x00_sp_free_dma(ha, sp);
 393         mempool_free(sp, ha->srb_mempool);
 394
 395 qc_host_busy_lock:
 396         spin_lock_irq(ha->host->host_lock);
 397
 398 qc_host_busy:
 399         return SCSI_MLQUEUE_HOST_BUSY;
 400
 401 qc_fail_command:
 402         done(cmd);
 403
 404         return 0;
 405 }
 406
 407
 408 static int
 409 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 410 {
 411         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 412         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 413         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 414         srb_t *sp;
 415         int rval;
 416
 417         rval = fc_remote_port_chkready(rport);
 418         if (rval) {
 419                 cmd->result = rval;
 420                 goto qc24_fail_command;
 421         }
 422
 423         /* Close window on fcport/rport state-transitioning. */
 424         if (!*(fc_port_t **)rport->dd_data) {
 425                 cmd->result = DID_IMM_RETRY << 16;
 426                 goto qc24_fail_command;
 427         }
 428
 429         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 430                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 431                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 432                         cmd->result = DID_NO_CONNECT << 16;
 433                         goto qc24_fail_command;
 434                 }
 435                 goto qc24_host_busy;
 436         }
 437
 438         spin_unlock_irq(ha->host->host_lock);
 439
 440         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 441         if (!sp)
 442                 goto qc24_host_busy_lock;
 443
 444         rval = qla24xx_start_scsi(sp);
 445         if (rval != QLA_SUCCESS)
 446                 goto qc24_host_busy_free_sp;
 447
 448         spin_lock_irq(ha->host->host_lock);
 449
 450         return 0;
 451
 452 qc24_host_busy_free_sp:
 453         qla2x00_sp_free_dma(ha, sp);
 454         mempool_free(sp, ha->srb_mempool);
 455
 456 qc24_host_busy_lock:
 457         spin_lock_irq(ha->host->host_lock);
 458
 459 qc24_host_busy:
 460         return SCSI_MLQUEUE_HOST_BUSY;
 461
 462 qc24_fail_command:
 463         done(cmd);
 464
 465         return 0;
 466 }
 467
 468
 469 /*
 470  * qla2x00_eh_wait_on_command
 471  *    Waits for the command to be returned by the Firmware for some
 472  *    max time.
 473  *
 474  * Input:
 475  *    ha = actual ha whose done queue will contain the command
 476  *            returned by firmware.
 477  *    cmd = Scsi Command to wait on.
 478  *    flag = Abort/Reset(Bus or Device Reset)
 479  *
 480  * Return:
 481  *    Not Found : 0
 482  *    Found : 1
 483  */
 484 static int
 485 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 486 {
 487 #define ABORT_POLLING_PERIOD    1000
 488 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 489         unsigned long wait_iter = ABORT_WAIT_ITER;
 490         int ret = QLA_SUCCESS;
 491
 492         while (CMD_SP(cmd)) {
 493                 msleep(ABORT_POLLING_PERIOD);
 494
 495                 if (--wait_iter)
 496                         break;
 497         }
 498         if (CMD_SP(cmd))
 499                 ret = QLA_FUNCTION_FAILED;
 500
 501         return ret;
 502 }
 503
 504 /*
 505  * qla2x00_wait_for_hba_online
 506  *    Wait till the HBA is online after going through
 507  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 508  *    finally HBA is disabled ie marked offline
 509  *
 510  * Input:
 511  *     ha - pointer to host adapter structure
 512  *
 513  * Note:
 514  *    Does context switching-Release SPIN_LOCK
 515  *    (if any) before calling this routine.
 516  *
 517  * Return:
 518  *    Success (Adapter is online) : 0
 519  *    Failed  (Adapter is offline/disabled) : 1
 520  */
 521 int
 522 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 523 {
 524         int             return_status;
 525         unsigned long   wait_online;
 526
 527         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 528         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 529             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 530             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 531             ha->dpc_active) && time_before(jiffies, wait_online)) {
 532
 533                 msleep(1000);
 534         }
 535         if (ha->flags.online)
 536                 return_status = QLA_SUCCESS;
 537         else
 538                 return_status = QLA_FUNCTION_FAILED;
 539
 540         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 541
 542         return (return_status);
 543 }
 544
 545 /*
 546  * qla2x00_wait_for_loop_ready
 547  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 548  *    to be in LOOP_READY state.
 549  * Input:
 550  *     ha - pointer to host adapter structure
 551  *
 552  * Note:
 553  *    Does context switching-Release SPIN_LOCK
 554  *    (if any) before calling this routine.
 555  *
 556  *
 557  * Return:
 558  *    Success (LOOP_READY) : 0
 559  *    Failed  (LOOP_NOT_READY) : 1
 560  */
 561 static inline int
 562 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 563 {
 564         int      return_status = QLA_SUCCESS;
 565         unsigned long loop_timeout ;
 566
 567         /* wait for 5 min at the max for loop to be ready */
 568         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 569
 570         while ((!atomic_read(&ha->loop_down_timer) &&
 571             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 572             atomic_read(&ha->loop_state) != LOOP_READY) {
 573                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 574                         return_status = QLA_FUNCTION_FAILED;
 575                         break;
 576                 }
 577                 msleep(1000);
 578                 if (time_after_eq(jiffies, loop_timeout)) {
 579                         return_status = QLA_FUNCTION_FAILED;
 580                         break;
 581                 }
 582         }
 583         return (return_status);
 584 }
 585
 586 /**************************************************************************
 587 * qla2xxx_eh_abort
 588 *
 589 * Description:
 590 *    The abort function will abort the specified command.
 591 *
 592 * Input:
 593 *    cmd = Linux SCSI command packet to be aborted.
 594 *
 595 * Returns:
 596 *    Either SUCCESS or FAILED.
 597 *
 598 * Note:
 599 *    Only return FAILED if command not returned by firmware.
 600 **************************************************************************/
 601 int
 602 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 603 {
 604         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 605         srb_t *sp;
 606         int ret, i;
 607         unsigned int id, lun;
 608         unsigned long serial;
 609         unsigned long flags;
 610         int wait = 0;
 611
 612         if (!CMD_SP(cmd))
 613                 return SUCCESS;
 614
 615         ret = SUCCESS;
 616
 617         id = cmd->device->id;
 618         lun = cmd->device->lun;
 619         serial = cmd->serial_number;
 620
 621         /* Check active list for command command. */
 622         spin_lock_irqsave(&ha->hardware_lock, flags);
 623         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 624                 sp = ha->outstanding_cmds[i];
 625
 626                 if (sp == NULL)
 627                         continue;
 628
 629                 if (sp->cmd != cmd)
 630                         continue;
 631
 632                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 633                     __func__, ha->host_no, sp, serial));
 634                 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
 635
 636                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 637                 if (ha->isp_ops.abort_command(ha, sp)) {
 638                         DEBUG2(printk("%s(%ld): abort_command "
 639                             "mbx failed.\n", __func__, ha->host_no));
 640                 } else {
 641                         DEBUG3(printk("%s(%ld): abort_command "
 642                             "mbx success.\n", __func__, ha->host_no));
 643                         wait = 1;
 644                 }
 645                 spin_lock_irqsave(&ha->hardware_lock, flags);
 646
 647                 break;
 648         }
 649         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 650
 651         /* Wait for the command to be returned. */
 652         if (wait) {
 653                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 654                         qla_printk(KERN_ERR, ha,
 655                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 656                             "%x.\n", ha->host_no, id, lun, serial, ret);
 657                         ret = FAILED;
 658                 }
 659         }
 660
 661         qla_printk(KERN_INFO, ha,
 662             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 663             ha->host_no, id, lun, wait, serial, ret);
 664
 665         return ret;
 666 }
 667
 668 /**************************************************************************
 669 * qla2x00_eh_wait_for_pending_target_commands
 670 *
 671 * Description:
 672 *    Waits for all the commands to come back from the specified target.
 673 *
 674 * Input:
 675 *    ha - pointer to scsi_qla_host structure.
 676 *    t  - target
 677 * Returns:
 678 *    Either SUCCESS or FAILED.
 679 *
 680 * Note:
 681 **************************************************************************/
 682 static int
 683 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 684 {
 685         int     cnt;
 686         int     status;
 687         srb_t           *sp;
 688         struct scsi_cmnd *cmd;
 689         unsigned long flags;
 690
 691         status = 0;
 692
 693         /*
 694          * Waiting for all commands for the designated target in the active
 695          * array
 696          */
 697         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 698                 spin_lock_irqsave(&ha->hardware_lock, flags);
 699                 sp = ha->outstanding_cmds[cnt];
 700                 if (sp) {
 701                         cmd = sp->cmd;
 702                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 703                         if (cmd->device->id == t) {
 704                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 705                                         status = 1;
 706                                         break;
 707                                 }
 708                         }
 709                 } else {
 710                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 711                 }
 712         }
 713         return (status);
 714 }
 715
 716
 717 /**************************************************************************
 718 * qla2xxx_eh_device_reset
 719 *
 720 * Description:
 721 *    The device reset function will reset the target and abort any
 722 *    executing commands.
 723 *
 724 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 725 *          attempt to use this value, even if you determine it is
 726 *          non-null.
 727 *
 728 * Input:
 729 *    cmd = Linux SCSI command packet of the command that cause the
 730 *          bus device reset.
 731 *
 732 * Returns:
 733 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 734 *
 735 **************************************************************************/
 736 int
 737 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 738 {
 739         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 740         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 741         srb_t *sp;
 742         int ret;
 743         unsigned int id, lun;
 744         unsigned long serial;
 745
 746         ret = FAILED;
 747
 748         id = cmd->device->id;
 749         lun = cmd->device->lun;
 750         serial = cmd->serial_number;
 751
 752         sp = (srb_t *) CMD_SP(cmd);
 753         if (!sp || !fcport)
 754                 return ret;
 755
 756         qla_printk(KERN_INFO, ha,
 757             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 758
 759         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 760                 goto eh_dev_reset_done;
 761
 762         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 763                 if (qla2x00_device_reset(ha, fcport) == 0)
 764                         ret = SUCCESS;
 765
 766 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 767                 if (ret == SUCCESS) {
 768                         if (fcport->flags & FC_FABRIC_DEVICE) {
 769                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 770                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 771                         }
 772                 }
 773 #endif
 774         } else {
 775                 DEBUG2(printk(KERN_INFO
 776                     "%s failed: loop not ready\n",__func__);)
 777         }
 778
 779         if (ret == FAILED) {
 780                 DEBUG3(printk("%s(%ld): device reset failed\n",
 781                     __func__, ha->host_no));
 782                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 783                     __func__);
 784
 785                 goto eh_dev_reset_done;
 786         }
 787
 788         /* Flush outstanding commands. */
 789         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 790                 ret = FAILED;
 791         if (ret == FAILED) {
 792                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 793                     __func__, ha->host_no));
 794                 qla_printk(KERN_INFO, ha,
 795                     "%s: failed while waiting for commands\n", __func__);
 796         } else
 797                 qla_printk(KERN_INFO, ha,
 798                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 799                     id, lun);
 800  eh_dev_reset_done:
 801         return ret;
 802 }
 803
 804 /**************************************************************************
 805 * qla2x00_eh_wait_for_pending_commands
 806 *
 807 * Description:
 808 *    Waits for all the commands to come back from the specified host.
 809 *
 810 * Input:
 811 *    ha - pointer to scsi_qla_host structure.
 812 *
 813 * Returns:
 814 *    1 : SUCCESS
 815 *    0 : FAILED
 816 *
 817 * Note:
 818 **************************************************************************/
 819 static int
 820 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 821 {
 822         int     cnt;
 823         int     status;
 824         srb_t           *sp;
 825         struct scsi_cmnd *cmd;
 826         unsigned long flags;
 827
 828         status = 1;
 829
 830         /*
 831          * Waiting for all commands for the designated target in the active
 832          * array
 833          */
 834         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 835                 spin_lock_irqsave(&ha->hardware_lock, flags);
 836                 sp = ha->outstanding_cmds[cnt];
 837                 if (sp) {
 838                         cmd = sp->cmd;
 839                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 840                         status = qla2x00_eh_wait_on_command(ha, cmd);
 841                         if (status == 0)
 842                                 break;
 843                 }
 844                 else {
 845                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 846                 }
 847         }
 848         return (status);
 849 }
 850
 851
 852 /**************************************************************************
 853 * qla2xxx_eh_bus_reset
 854 *
 855 * Description:
 856 *    The bus reset function will reset the bus and abort any executing
 857 *    commands.
 858 *
 859 * Input:
 860 *    cmd = Linux SCSI command packet of the command that cause the
 861 *          bus reset.
 862 *
 863 * Returns:
 864 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 865 *
 866 **************************************************************************/
 867 int
 868 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 869 {
 870         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 871         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 872         srb_t *sp;
 873         int ret;
 874         unsigned int id, lun;
 875         unsigned long serial;
 876
 877         ret = FAILED;
 878
 879         id = cmd->device->id;
 880         lun = cmd->device->lun;
 881         serial = cmd->serial_number;
 882
 883         sp = (srb_t *) CMD_SP(cmd);
 884         if (!sp || !fcport)
 885                 return ret;
 886
 887         qla_printk(KERN_INFO, ha,
 888             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 889
 890         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 891                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 892                 goto eh_bus_reset_done;
 893         }
 894
 895         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 896                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 897                         ret = SUCCESS;
 898         }
 899         if (ret == FAILED)
 900                 goto eh_bus_reset_done;
 901
 902         /* Flush outstanding commands. */
 903         if (!qla2x00_eh_wait_for_pending_commands(ha))
 904                 ret = FAILED;
 905
 906 eh_bus_reset_done:
 907         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 908             (ret == FAILED) ? "failed" : "succeded");
 909
 910         return ret;
 911 }
 912
 913 /**************************************************************************
 914 * qla2xxx_eh_host_reset
 915 *
 916 * Description:
 917 *    The reset function will reset the Adapter.
 918 *
 919 * Input:
 920 *      cmd = Linux SCSI command packet of the command that cause the
 921 *            adapter reset.
 922 *
 923 * Returns:
 924 *      Either SUCCESS or FAILED.
 925 *
 926 * Note:
 927 **************************************************************************/
 928 int
 929 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 930 {
 931         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 932         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 933         srb_t *sp;
 934         int ret;
 935         unsigned int id, lun;
 936         unsigned long serial;
 937
 938         ret = FAILED;
 939
 940         id = cmd->device->id;
 941         lun = cmd->device->lun;
 942         serial = cmd->serial_number;
 943
 944         sp = (srb_t *) CMD_SP(cmd);
 945         if (!sp || !fcport)
 946                 return ret;
 947
 948         qla_printk(KERN_INFO, ha,
 949             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 950
 951         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 952                 goto eh_host_reset_lock;
 953
 954         /*
 955          * Fixme-may be dpc thread is active and processing
 956          * loop_resync,so wait a while for it to
 957          * be completed and then issue big hammer.Otherwise
 958          * it may cause I/O failure as big hammer marks the
 959          * devices as lost kicking of the port_down_timer
 960          * while dpc is stuck for the mailbox to complete.
 961          */
 962         qla2x00_wait_for_loop_ready(ha);
 963         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 964         if (qla2x00_abort_isp(ha)) {
 965                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 966                 /* failed. schedule dpc to try */
 967                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 968
 969                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 970                         goto eh_host_reset_lock;
 971         }
 972         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 973
 974         /* Waiting for our command in done_queue to be returned to OS.*/
 975         if (qla2x00_eh_wait_for_pending_commands(ha))
 976                 ret = SUCCESS;
 977
 978 eh_host_reset_lock:
 979         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 980             (ret == FAILED) ? "failed" : "succeded");
 981
 982         return ret;
 983 }
 984
 985 /*
 986 * qla2x00_loop_reset
 987 *      Issue loop reset.
 988 *
 989 * Input:
 990 *      ha = adapter block pointer.
 991 *
 992 * Returns:
 993 *      0 = success
 994 */
 995 static int
 996 qla2x00_loop_reset(scsi_qla_host_t *ha)
 997 {
 998         int status = QLA_SUCCESS;
 999         struct fc_port *fcport;
1000
1001         if (ha->flags.enable_lip_reset) {
1002                 status = qla2x00_lip_reset(ha);
1003         }
1004
1005         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1006                 list_for_each_entry(fcport, &ha->fcports, list) {
1007                         if (fcport->port_type != FCT_TARGET)
1008                                 continue;
1009
1010                         status = qla2x00_device_reset(ha, fcport);
1011                         if (status != QLA_SUCCESS)
1012                                 break;
1013                 }
1014         }
1015
1016         if (status == QLA_SUCCESS &&
1017                 ((!ha->flags.enable_target_reset &&
1018                   !ha->flags.enable_lip_reset) ||
1019                 ha->flags.enable_lip_full_login)) {
1020
1021                 status = qla2x00_full_login_lip(ha);
1022         }
1023
1024         /* Issue marker command only when we are going to start the I/O */
1025         ha->marker_needed = 1;
1026
1027         if (status) {
1028                 /* Empty */
1029                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1030                                 __func__,
1031                                 ha->host_no);)
1032         } else {
1033                 /* Empty */
1034                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1035                                 __func__,
1036                                 ha->host_no);)
1037         }
1038
1039         return(status);
1040 }
1041
1042 /*
1043  * qla2x00_device_reset
1044  *      Issue bus device reset message to the target.
1045  *
1046  * Input:
1047  *      ha = adapter block pointer.
1048  *      t = SCSI ID.
1049  *      TARGET_QUEUE_LOCK must be released.
1050  *      ADAPTER_STATE_LOCK must be released.
1051  *
1052  * Context:
1053  *      Kernel context.
1054  */
1055 static int
1056 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1057 {
1058         /* Abort Target command will clear Reservation */
1059         return ha->isp_ops.abort_target(reset_fcport);
1060 }
1061
1062 static int
1063 qla2xxx_slave_alloc(struct scsi_device *sdev)
1064 {
1065         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1066
1067         if (!rport || fc_remote_port_chkready(rport))
1068                 return -ENXIO;
1069
1070         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1071
1072         return 0;
1073 }
1074
1075 static int
1076 qla2xxx_slave_configure(struct scsi_device *sdev)
1077 {
1078         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1079         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1080
1081         if (sdev->tagged_supported)
1082                 scsi_activate_tcq(sdev, 32);
1083         else
1084                 scsi_deactivate_tcq(sdev, 32);
1085
1086         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1087
1088         return 0;
1089 }
1090
1091 static void
1092 qla2xxx_slave_destroy(struct scsi_device *sdev)
1093 {
1094         sdev->hostdata = NULL;
1095 }
1096
1097 static int
1098 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1099 {
1100         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1101         return sdev->queue_depth;
1102 }
1103
1104 static int
1105 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1106 {
1107         if (sdev->tagged_supported) {
1108                 scsi_set_tag_type(sdev, tag_type);
1109                 if (tag_type)
1110                         scsi_activate_tcq(sdev, sdev->queue_depth);
1111                 else
1112                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1113         } else
1114                 tag_type = 0;
1115
1116         return tag_type;
1117 }
1118
1119 /**
1120  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1121  * @ha: HA context
1122  *
1123  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1124  * supported addressing method.
1125  */
1126 static void
1127 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1128 {
1129         /* Assume a 32bit DMA mask. */
1130         ha->flags.enable_64bit_addressing = 0;
1131
1132         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1133                 /* Any upper-dword bits set? */
1134                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1135                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1136                         /* Ok, a 64bit DMA mask is applicable. */
1137                         ha->flags.enable_64bit_addressing = 1;
1138                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1139                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1140                         return;
1141                 }
1142         }
1143
1144         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1145         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1146 }
1147
1148 static inline void
1149 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1150 {
1151         ha->device_type = DT_EXTENDED_IDS;
1152         switch (ha->pdev->device) {
1153         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1154                 ha->device_type |= DT_ISP2100;
1155                 ha->device_type &= ~DT_EXTENDED_IDS;
1156                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1157                 break;
1158         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1159                 ha->device_type |= DT_ISP2200;
1160                 ha->device_type &= ~DT_EXTENDED_IDS;
1161                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1162                 break;
1163         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1164                 ha->device_type |= DT_ISP2300;
1165                 ha->device_type |= DT_ZIO_SUPPORTED;
1166                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1167                 break;
1168         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1169                 ha->device_type |= DT_ISP2312;
1170                 ha->device_type |= DT_ZIO_SUPPORTED;
1171                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1172                 break;
1173         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1174                 ha->device_type |= DT_ISP2322;
1175                 ha->device_type |= DT_ZIO_SUPPORTED;
1176                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1177                     ha->pdev->subsystem_device == 0x0170)
1178                         ha->device_type |= DT_OEM_001;
1179                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1180                 break;
1181         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1182                 ha->device_type |= DT_ISP6312;
1183                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1184                 break;
1185         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1186                 ha->device_type |= DT_ISP6322;
1187                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1188                 break;
1189         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1190                 ha->device_type |= DT_ISP2422;
1191                 ha->device_type |= DT_ZIO_SUPPORTED;
1192                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1193                 break;
1194         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1195                 ha->device_type |= DT_ISP2432;
1196                 ha->device_type |= DT_ZIO_SUPPORTED;
1197                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1198                 break;
1199         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1200                 ha->device_type |= DT_ISP5422;
1201                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1202                 break;
1203         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1204                 ha->device_type |= DT_ISP5432;
1205                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1206                 break;
1207         }
1208 }
1209
1210 static int
1211 qla2x00_iospace_config(scsi_qla_host_t *ha)
1212 {
1213         unsigned long   pio, pio_len, pio_flags;
1214         unsigned long   mmio, mmio_len, mmio_flags;
1215
1216         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1217         pio = pci_resource_start(ha->pdev, 0);
1218         pio_len = pci_resource_len(ha->pdev, 0);
1219         pio_flags = pci_resource_flags(ha->pdev, 0);
1220         if (pio_flags & IORESOURCE_IO) {
1221                 if (pio_len < MIN_IOBASE_LEN) {
1222                         qla_printk(KERN_WARNING, ha,
1223                             "Invalid PCI I/O region size (%s)...\n",
1224                                 pci_name(ha->pdev));
1225                         pio = 0;
1226                 }
1227         } else {
1228                 qla_printk(KERN_WARNING, ha,
1229                     "region #0 not a PIO resource (%s)...\n",
1230                     pci_name(ha->pdev));
1231                 pio = 0;
1232         }
1233
1234         /* Use MMIO operations for all accesses. */
1235         mmio = pci_resource_start(ha->pdev, 1);
1236         mmio_len = pci_resource_len(ha->pdev, 1);
1237         mmio_flags = pci_resource_flags(ha->pdev, 1);
1238
1239         if (!(mmio_flags & IORESOURCE_MEM)) {
1240                 qla_printk(KERN_ERR, ha,
1241                     "region #0 not an MMIO resource (%s), aborting\n",
1242                     pci_name(ha->pdev));
1243                 goto iospace_error_exit;
1244         }
1245         if (mmio_len < MIN_IOBASE_LEN) {
1246                 qla_printk(KERN_ERR, ha,
1247                     "Invalid PCI mem region size (%s), aborting\n",
1248                         pci_name(ha->pdev));
1249                 goto iospace_error_exit;
1250         }
1251
1252         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1253                 qla_printk(KERN_WARNING, ha,
1254                     "Failed to reserve PIO/MMIO regions (%s)\n",
1255                     pci_name(ha->pdev));
1256
1257                 goto iospace_error_exit;
1258         }
1259
1260         ha->pio_address = pio;
1261         ha->pio_length = pio_len;
1262         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1263         if (!ha->iobase) {
1264                 qla_printk(KERN_ERR, ha,
1265                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1266
1267                 goto iospace_error_exit;
1268         }
1269
1270         return (0);
1271
1272 iospace_error_exit:
1273         return (-ENOMEM);
1274 }
1275
1276 static void
1277 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1278 {
1279         unsigned long flags = 0;
1280         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1281
1282         spin_lock_irqsave(&ha->hardware_lock, flags);
1283         ha->interrupts_on = 1;
1284         /* enable risc and host interrupts */
1285         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1286         RD_REG_WORD(&reg->ictrl);
1287         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1288
1289 }
1290
1291 static void
1292 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1293 {
1294         unsigned long flags = 0;
1295         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1296
1297         spin_lock_irqsave(&ha->hardware_lock, flags);
1298         ha->interrupts_on = 0;
1299         /* disable risc and host interrupts */
1300         WRT_REG_WORD(&reg->ictrl, 0);
1301         RD_REG_WORD(&reg->ictrl);
1302         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1303 }
1304
1305 static void
1306 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1307 {
1308         unsigned long flags = 0;
1309         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1310
1311         spin_lock_irqsave(&ha->hardware_lock, flags);
1312         ha->interrupts_on = 1;
1313         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1314         RD_REG_DWORD(&reg->ictrl);
1315         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1316 }
1317
1318 static void
1319 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1320 {
1321         unsigned long flags = 0;
1322         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1323
1324         spin_lock_irqsave(&ha->hardware_lock, flags);
1325         ha->interrupts_on = 0;
1326         WRT_REG_DWORD(&reg->ictrl, 0);
1327         RD_REG_DWORD(&reg->ictrl);
1328         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1329 }
1330
1331 /*
1332  * PCI driver interface
1333  */
1334 static int qla2x00_probe_one(struct pci_dev *pdev)
1335 {
1336         int     ret = -ENODEV;
1337         device_reg_t __iomem *reg;
1338         struct Scsi_Host *host;
1339         scsi_qla_host_t *ha;
1340         unsigned long   flags = 0;
1341         unsigned long   wait_switch = 0;
1342         char pci_info[20];
1343         char fw_str[30];
1344         fc_port_t *fcport;
1345         struct scsi_host_template *sht;
1346
1347         if (pci_enable_device(pdev))
1348                 goto probe_out;
1349
1350         sht = &qla2x00_driver_template;
1351         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1352             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1353                 sht = &qla24xx_driver_template;
1354         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1355         if (host == NULL) {
1356                 printk(KERN_WARNING
1357                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1358                 goto probe_disable_device;
1359         }
1360
1361         /* Clear our data area */
1362         ha = (scsi_qla_host_t *)host->hostdata;
1363         memset(ha, 0, sizeof(scsi_qla_host_t));
1364
1365         ha->pdev = pdev;
1366         ha->host = host;
1367         ha->host_no = host->host_no;
1368         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1369
1370         /* Set ISP-type information. */
1371         qla2x00_set_isp_flags(ha);
1372
1373         /* Configure PCI I/O space */
1374         ret = qla2x00_iospace_config(ha);
1375         if (ret)
1376                 goto probe_failed;
1377
1378         qla_printk(KERN_INFO, ha,
1379             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1380             ha->iobase);
1381
1382         spin_lock_init(&ha->hardware_lock);
1383
1384         ha->prev_topology = 0;
1385         ha->init_cb_size = sizeof(init_cb_t);
1386         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1387         ha->link_data_rate = LDR_UNKNOWN;
1388         ha->optrom_size = OPTROM_SIZE_2300;
1389
1390         /* Assign ISP specific operations. */
1391         ha->isp_ops.pci_config          = qla2100_pci_config;
1392         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1393         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1394         ha->isp_ops.config_rings        = qla2x00_config_rings;
1395         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1396         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1397         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1398         ha->isp_ops.load_risc           = qla2x00_load_risc;
1399         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1400         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1401         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1402         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1403         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1404         ha->isp_ops.abort_command       = qla2x00_abort_command;
1405         ha->isp_ops.abort_target        = qla2x00_abort_target;
1406         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1407         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1408         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1409         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1410         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1411         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1412         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1413         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1414         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1415         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1416         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1417         if (IS_QLA2100(ha)) {
1418                 host->max_id = MAX_TARGETS_2100;
1419                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1420                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1421                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1422                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1423                 host->sg_tablesize = 32;
1424                 ha->gid_list_info_size = 4;
1425         } else if (IS_QLA2200(ha)) {
1426                 host->max_id = MAX_TARGETS_2200;
1427                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1428                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1429                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1430                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1431                 ha->gid_list_info_size = 4;
1432         } else if (IS_QLA23XX(ha)) {
1433                 host->max_id = MAX_TARGETS_2200;
1434                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1435                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1436                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1437                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1438                 ha->isp_ops.pci_config = qla2300_pci_config;
1439                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1440                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1441                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1442                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1443                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1444                 ha->gid_list_info_size = 6;
1445                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1446                         ha->optrom_size = OPTROM_SIZE_2322;
1447         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1448                 host->max_id = MAX_TARGETS_2200;
1449                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1450                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1451                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1452                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1453                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1454                 ha->mgmt_svr_loop_id = 10;
1455                 ha->isp_ops.pci_config = qla24xx_pci_config;
1456                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1457                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1458                 ha->isp_ops.config_rings = qla24xx_config_rings;
1459                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1460                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1461                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1462                 ha->isp_ops.load_risc = qla24xx_load_risc;
1463                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1464                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1465                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1466                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1467                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1468                 ha->isp_ops.abort_command = qla24xx_abort_command;
1469                 ha->isp_ops.abort_target = qla24xx_abort_target;
1470                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1471                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1472                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1473                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1474                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1475                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1476                 ha->isp_ops.fw_dump = qla24xx_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
1496         /*
1497          * These locks are used to prevent more than one CPU
1498          * from modifying the queue at the same time. The
1499          * higher level "host_lock" will reduce most
1500          * contention for these locks.
1501          */
1502         spin_lock_init(&ha->mbx_reg_lock);
1503
1504         qla2x00_config_dma_addressing(ha);
1505         if (qla2x00_mem_alloc(ha)) {
1506                 qla_printk(KERN_WARNING, ha,
1507                     "[ERROR] Failed to allocate memory for adapter\n");
1508
1509                 ret = -ENOMEM;
1510                 goto probe_failed;
1511         }
1512
1513         if (qla2x00_initialize_adapter(ha) &&
1514             !(ha->device_flags & DFLG_NO_CABLE)) {
1515
1516                 qla_printk(KERN_WARNING, ha,
1517                     "Failed to initialize adapter\n");
1518
1519                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1520                     "Adapter flags %x.\n",
1521                     ha->host_no, ha->device_flags));
1522
1523                 ret = -ENODEV;
1524                 goto probe_failed;
1525         }
1526
1527         /*
1528          * Startup the kernel thread for this host adapter
1529          */
1530         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1531                         "%s_dpc", ha->host_str);
1532         if (IS_ERR(ha->dpc_thread)) {
1533                 qla_printk(KERN_WARNING, ha,
1534                     "Unable to start DPC thread!\n");
1535                 ret = PTR_ERR(ha->dpc_thread);
1536                 goto probe_failed;
1537         }
1538
1539         host->this_id = 255;
1540         host->cmd_per_lun = 3;
1541         host->unique_id = ha->instance;
1542         host->max_cmd_len = MAX_CMDSZ;
1543         host->max_channel = MAX_BUSES - 1;
1544         host->max_lun = MAX_LUNS;
1545         host->transportt = qla2xxx_transport_template;
1546
1547         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1548             SA_INTERRUPT|SA_SHIRQ, QLA2XXX_DRIVER_NAME, ha);
1549         if (ret) {
1550                 qla_printk(KERN_WARNING, ha,
1551                     "Failed to reserve interrupt %d already in use.\n",
1552                     pdev->irq);
1553                 goto probe_failed;
1554         }
1555         host->irq = pdev->irq;
1556
1557         /* Initialized the timer */
1558         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1559
1560         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1561             ha->host_no, ha));
1562
1563         ha->isp_ops.disable_intrs(ha);
1564
1565         spin_lock_irqsave(&ha->hardware_lock, flags);
1566         reg = ha->iobase;
1567         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1568                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1569                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1570         } else {
1571                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1572                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1573                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1574
1575                 /* Enable proper parity */
1576                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1577                         if (IS_QLA2300(ha))
1578                                 /* SRAM parity */
1579                                 WRT_REG_WORD(&reg->isp.hccr,
1580                                     (HCCR_ENABLE_PARITY + 0x1));
1581                         else
1582                                 /* SRAM, Instruction RAM and GP RAM parity */
1583                                 WRT_REG_WORD(&reg->isp.hccr,
1584                                     (HCCR_ENABLE_PARITY + 0x7));
1585                 }
1586         }
1587         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1588
1589         ha->isp_ops.enable_intrs(ha);
1590
1591         /* v2.19.5b6 */
1592         /*
1593          * Wait around max loop_reset_delay secs for the devices to come
1594          * on-line. We don't want Linux scanning before we are ready.
1595          *
1596          */
1597         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1598             time_before(jiffies,wait_switch) &&
1599              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1600              && (ha->device_flags & SWITCH_FOUND) ;) {
1601
1602                 qla2x00_check_fabric_devices(ha);
1603
1604                 msleep(10);
1605         }
1606
1607         pci_set_drvdata(pdev, ha);
1608         ha->flags.init_done = 1;
1609         num_hosts++;
1610
1611         ret = scsi_add_host(host, &pdev->dev);
1612         if (ret)
1613                 goto probe_failed;
1614
1615         qla2x00_alloc_sysfs_attr(ha);
1616
1617         qla2x00_init_host_attr(ha);
1618
1619         qla_printk(KERN_INFO, ha, "\n"
1620             " QLogic Fibre Channel HBA Driver: %s\n"
1621             "  QLogic %s - %s\n"
1622             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1623             qla2x00_version_str, ha->model_number,
1624             ha->model_desc ? ha->model_desc: "", pdev->device,
1625             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1626             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1627             ha->isp_ops.fw_version_str(ha, fw_str));
1628
1629         /* Go with fc_rport registration. */
1630         list_for_each_entry(fcport, &ha->fcports, list)
1631                 qla2x00_reg_remote_port(ha, fcport);
1632
1633         return 0;
1634
1635 probe_failed:
1636         qla2x00_free_device(ha);
1637
1638         scsi_host_put(host);
1639
1640 probe_disable_device:
1641         pci_disable_device(pdev);
1642
1643 probe_out:
1644         return ret;
1645 }
1646
1647 static void qla2x00_remove_one(struct pci_dev *pdev)
1648 {
1649         scsi_qla_host_t *ha;
1650
1651         ha = pci_get_drvdata(pdev);
1652
1653         qla2x00_free_sysfs_attr(ha);
1654
1655         fc_remove_host(ha->host);
1656
1657         scsi_remove_host(ha->host);
1658
1659         qla2x00_free_device(ha);
1660
1661         scsi_host_put(ha->host);
1662
1663         pci_set_drvdata(pdev, NULL);
1664 }
1665
1666 static void
1667 qla2x00_free_device(scsi_qla_host_t *ha)
1668 {
1669         /* Disable timer */
1670         if (ha->timer_active)
1671                 qla2x00_stop_timer(ha);
1672
1673         /* Kill the kernel thread for this host */
1674         if (ha->dpc_thread) {
1675                 struct task_struct *t = ha->dpc_thread;
1676
1677                 /*
1678                  * qla2xxx_wake_dpc checks for ->dpc_thread
1679                  * so we need to zero it out.
1680                  */
1681                 ha->dpc_thread = NULL;
1682                 kthread_stop(t);
1683         }
1684
1685         if (ha->eft)
1686                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1687
1688         /* Stop currently executing firmware. */
1689         qla2x00_stop_firmware(ha);
1690
1691         /* turn-off interrupts on the card */
1692         if (ha->interrupts_on)
1693                 ha->isp_ops.disable_intrs(ha);
1694
1695         qla2x00_mem_free(ha);
1696
1697         ha->flags.online = 0;
1698
1699         /* Detach interrupts */
1700         if (ha->host->irq)
1701                 free_irq(ha->host->irq, ha);
1702
1703         /* release io space registers  */
1704         if (ha->iobase)
1705                 iounmap(ha->iobase);
1706         pci_release_regions(ha->pdev);
1707
1708         pci_disable_device(ha->pdev);
1709 }
1710
1711 static inline void
1712 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1713     int defer)
1714 {
1715         unsigned long flags;
1716         struct fc_rport *rport;
1717
1718         if (!fcport->rport)
1719                 return;
1720
1721         rport = fcport->rport;
1722         if (defer) {
1723                 spin_lock_irqsave(&fcport->rport_lock, flags);
1724                 fcport->drport = rport;
1725                 fcport->rport = NULL;
1726                 *(fc_port_t **)rport->dd_data = NULL;
1727                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1728                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1729         } else {
1730                 spin_lock_irqsave(&fcport->rport_lock, flags);
1731                 fcport->rport = NULL;
1732                 *(fc_port_t **)rport->dd_data = NULL;
1733                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1734                 fc_remote_port_delete(rport);
1735         }
1736 }
1737
1738 /*
1739  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1740  *
1741  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1742  *
1743  * Return: None.
1744  *
1745  * Context:
1746  */
1747 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1748     int do_login, int defer)
1749 {
1750         if (atomic_read(&fcport->state) == FCS_ONLINE)
1751                 qla2x00_schedule_rport_del(ha, fcport, defer);
1752
1753         /*
1754          * We may need to retry the login, so don't change the state of the
1755          * port but do the retries.
1756          */
1757         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1758                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1759
1760         if (!do_login)
1761                 return;
1762
1763         if (fcport->login_retry == 0) {
1764                 fcport->login_retry = ha->login_retry_count;
1765                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1766
1767                 DEBUG(printk("scsi(%ld): Port login retry: "
1768                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1769                     "id = 0x%04x retry cnt=%d\n",
1770                     ha->host_no,
1771                     fcport->port_name[0],
1772                     fcport->port_name[1],
1773                     fcport->port_name[2],
1774                     fcport->port_name[3],
1775                     fcport->port_name[4],
1776                     fcport->port_name[5],
1777                     fcport->port_name[6],
1778                     fcport->port_name[7],
1779                     fcport->loop_id,
1780                     fcport->login_retry));
1781         }
1782 }
1783
1784 /*
1785  * qla2x00_mark_all_devices_lost
1786  *      Updates fcport state when device goes offline.
1787  *
1788  * Input:
1789  *      ha = adapter block pointer.
1790  *      fcport = port structure pointer.
1791  *
1792  * Return:
1793  *      None.
1794  *
1795  * Context:
1796  */
1797 void
1798 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1799 {
1800         fc_port_t *fcport;
1801
1802         list_for_each_entry(fcport, &ha->fcports, list) {
1803                 if (fcport->port_type != FCT_TARGET)
1804                         continue;
1805
1806                 /*
1807                  * No point in marking the device as lost, if the device is
1808                  * already DEAD.
1809                  */
1810                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1811                         continue;
1812                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1813                         qla2x00_schedule_rport_del(ha, fcport, defer);
1814                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1815         }
1816
1817         if (defer)
1818                 qla2xxx_wake_dpc(ha);
1819 }
1820
1821 /*
1822 * qla2x00_mem_alloc
1823 *      Allocates adapter memory.
1824 *
1825 * Returns:
1826 *      0  = success.
1827 *      1  = failure.
1828 */
1829 static uint8_t
1830 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1831 {
1832         char    name[16];
1833         uint8_t   status = 1;
1834         int     retry= 10;
1835
1836         do {
1837                 /*
1838                  * This will loop only once if everything goes well, else some
1839                  * number of retries will be performed to get around a kernel
1840                  * bug where available mem is not allocated until after a
1841                  * little delay and a retry.
1842                  */
1843                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1844                     (ha->request_q_length + 1) * sizeof(request_t),
1845                     &ha->request_dma, GFP_KERNEL);
1846                 if (ha->request_ring == NULL) {
1847                         qla_printk(KERN_WARNING, ha,
1848                             "Memory Allocation failed - request_ring\n");
1849
1850                         qla2x00_mem_free(ha);
1851                         msleep(100);
1852
1853                         continue;
1854                 }
1855
1856                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1857                     (ha->response_q_length + 1) * sizeof(response_t),
1858                     &ha->response_dma, GFP_KERNEL);
1859                 if (ha->response_ring == NULL) {
1860                         qla_printk(KERN_WARNING, ha,
1861                             "Memory Allocation failed - response_ring\n");
1862
1863                         qla2x00_mem_free(ha);
1864                         msleep(100);
1865
1866                         continue;
1867                 }
1868
1869                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1870                     &ha->gid_list_dma, GFP_KERNEL);
1871                 if (ha->gid_list == NULL) {
1872                         qla_printk(KERN_WARNING, ha,
1873                             "Memory Allocation failed - gid_list\n");
1874
1875                         qla2x00_mem_free(ha);
1876                         msleep(100);
1877
1878                         continue;
1879                 }
1880
1881                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1882                     ha->host_no);
1883                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1884                     DMA_POOL_SIZE, 8, 0);
1885                 if (ha->s_dma_pool == NULL) {
1886                         qla_printk(KERN_WARNING, ha,
1887                             "Memory Allocation failed - s_dma_pool\n");
1888
1889                         qla2x00_mem_free(ha);
1890                         msleep(100);
1891
1892                         continue;
1893                 }
1894
1895                 /* get consistent memory allocated for init control block */
1896                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1897                     &ha->init_cb_dma);
1898                 if (ha->init_cb == NULL) {
1899                         qla_printk(KERN_WARNING, ha,
1900                             "Memory Allocation failed - init_cb\n");
1901
1902                         qla2x00_mem_free(ha);
1903                         msleep(100);
1904
1905                         continue;
1906                 }
1907                 memset(ha->init_cb, 0, ha->init_cb_size);
1908
1909                 /* Allocate ioctl related memory. */
1910                 if (qla2x00_alloc_ioctl_mem(ha)) {
1911                         qla_printk(KERN_WARNING, ha,
1912                             "Memory Allocation failed - ioctl_mem\n");
1913
1914                         qla2x00_mem_free(ha);
1915                         msleep(100);
1916
1917                         continue;
1918                 }
1919
1920                 if (qla2x00_allocate_sp_pool(ha)) {
1921                         qla_printk(KERN_WARNING, ha,
1922                             "Memory Allocation failed - "
1923                             "qla2x00_allocate_sp_pool()\n");
1924
1925                         qla2x00_mem_free(ha);
1926                         msleep(100);
1927
1928                         continue;
1929                 }
1930
1931                 /* Allocate memory for SNS commands */
1932                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1933                         /* Get consistent memory allocated for SNS commands */
1934                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1935                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1936                             GFP_KERNEL);
1937                         if (ha->sns_cmd == NULL) {
1938                                 /* error */
1939                                 qla_printk(KERN_WARNING, ha,
1940                                     "Memory Allocation failed - sns_cmd\n");
1941
1942                                 qla2x00_mem_free(ha);
1943                                 msleep(100);
1944
1945                                 continue;
1946                         }
1947                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1948                 } else {
1949                         /* Get consistent memory allocated for MS IOCB */
1950                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1951                             &ha->ms_iocb_dma);
1952                         if (ha->ms_iocb == NULL) {
1953                                 /* error */
1954                                 qla_printk(KERN_WARNING, ha,
1955                                     "Memory Allocation failed - ms_iocb\n");
1956
1957                                 qla2x00_mem_free(ha);
1958                                 msleep(100);
1959
1960                                 continue;
1961                         }
1962                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1963
1964                         /*
1965                          * Get consistent memory allocated for CT SNS
1966                          * commands
1967                          */
1968                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1969                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1970                             GFP_KERNEL);
1971                         if (ha->ct_sns == NULL) {
1972                                 /* error */
1973                                 qla_printk(KERN_WARNING, ha,
1974                                     "Memory Allocation failed - ct_sns\n");
1975
1976                                 qla2x00_mem_free(ha);
1977                                 msleep(100);
1978
1979                                 continue;
1980                         }
1981                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1982
1983                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1984                                 /*
1985                                  * Get consistent memory allocated for SFP
1986                                  * block.
1987                                  */
1988                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
1989                                     GFP_KERNEL, &ha->sfp_data_dma);
1990                                 if (ha->sfp_data == NULL) {
1991                                         qla_printk(KERN_WARNING, ha,
1992                                             "Memory Allocation failed - "
1993                                             "sfp_data\n");
1994
1995                                         qla2x00_mem_free(ha);
1996                                         msleep(100);
1997
1998                                         continue;
1999                                 }
2000                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2001                         }
2002                 }
2003
2004                 /* Done all allocations without any error. */
2005                 status = 0;
2006
2007         } while (retry-- && status != 0);
2008
2009         if (status) {
2010                 printk(KERN_WARNING
2011                         "%s(): **** FAILED ****\n", __func__);
2012         }
2013
2014         return(status);
2015 }
2016
2017 /*
2018 * qla2x00_mem_free
2019 *      Frees all adapter allocated memory.
2020 *
2021 * Input:
2022 *      ha = adapter block pointer.
2023 */
2024 static void
2025 qla2x00_mem_free(scsi_qla_host_t *ha)
2026 {
2027         struct list_head        *fcpl, *fcptemp;
2028         fc_port_t       *fcport;
2029
2030         if (ha == NULL) {
2031                 /* error */
2032                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2033                 return;
2034         }
2035
2036         /* free ioctl memory */
2037         qla2x00_free_ioctl_mem(ha);
2038
2039         /* free sp pool */
2040         qla2x00_free_sp_pool(ha);
2041
2042         if (ha->fw_dump) {
2043                 if (ha->eft)
2044                         dma_free_coherent(&ha->pdev->dev,
2045                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2046                 vfree(ha->fw_dump);
2047         }
2048
2049         if (ha->sns_cmd)
2050                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2051                     ha->sns_cmd, ha->sns_cmd_dma);
2052
2053         if (ha->ct_sns)
2054                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2055                     ha->ct_sns, ha->ct_sns_dma);
2056
2057         if (ha->sfp_data)
2058                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2059
2060         if (ha->ms_iocb)
2061                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2062
2063         if (ha->init_cb)
2064                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2065
2066         if (ha->s_dma_pool)
2067                 dma_pool_destroy(ha->s_dma_pool);
2068
2069         if (ha->gid_list)
2070                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2071                     ha->gid_list_dma);
2072
2073         if (ha->response_ring)
2074                 dma_free_coherent(&ha->pdev->dev,
2075                     (ha->response_q_length + 1) * sizeof(response_t),
2076                     ha->response_ring, ha->response_dma);
2077
2078         if (ha->request_ring)
2079                 dma_free_coherent(&ha->pdev->dev,
2080                     (ha->request_q_length + 1) * sizeof(request_t),
2081                     ha->request_ring, ha->request_dma);
2082
2083         ha->eft = NULL;
2084         ha->eft_dma = 0;
2085         ha->sns_cmd = NULL;
2086         ha->sns_cmd_dma = 0;
2087         ha->ct_sns = NULL;
2088         ha->ct_sns_dma = 0;
2089         ha->ms_iocb = NULL;
2090         ha->ms_iocb_dma = 0;
2091         ha->init_cb = NULL;
2092         ha->init_cb_dma = 0;
2093
2094         ha->s_dma_pool = NULL;
2095
2096         ha->gid_list = NULL;
2097         ha->gid_list_dma = 0;
2098
2099         ha->response_ring = NULL;
2100         ha->response_dma = 0;
2101         ha->request_ring = NULL;
2102         ha->request_dma = 0;
2103
2104         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2105                 fcport = list_entry(fcpl, fc_port_t, list);
2106
2107                 /* fc ports */
2108                 list_del_init(&fcport->list);
2109                 kfree(fcport);
2110         }
2111         INIT_LIST_HEAD(&ha->fcports);
2112
2113         ha->fw_dump = NULL;
2114         ha->fw_dumped = 0;
2115         ha->fw_dump_reading = 0;
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 /* Firmware interface routines. */
2574
2575 #define FW_BLOBS        5
2576 #define FW_ISP21XX      0
2577 #define FW_ISP22XX      1
2578 #define FW_ISP2300      2
2579 #define FW_ISP2322      3
2580 #define FW_ISP24XX      4
2581
2582 static DECLARE_MUTEX(qla_fw_lock);
2583
2584 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2585         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2586         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2587         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2588         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2589         { .name = "ql2400_fw.bin", },
2590 };
2591
2592 struct fw_blob *
2593 qla2x00_request_firmware(scsi_qla_host_t *ha)
2594 {
2595         struct fw_blob *blob;
2596
2597         blob = NULL;
2598         if (IS_QLA2100(ha)) {
2599                 blob = &qla_fw_blobs[FW_ISP21XX];
2600         } else if (IS_QLA2200(ha)) {
2601                 blob = &qla_fw_blobs[FW_ISP22XX];
2602         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2603                 blob = &qla_fw_blobs[FW_ISP2300];
2604         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2605                 blob = &qla_fw_blobs[FW_ISP2322];
2606         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2607                 blob = &qla_fw_blobs[FW_ISP24XX];
2608         }
2609
2610         down(&qla_fw_lock);
2611         if (blob->fw)
2612                 goto out;
2613
2614         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2615                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2616                     "(%s).\n", ha->host_no, blob->name));
2617                 blob->fw = NULL;
2618                 blob = NULL;
2619                 goto out;
2620         }
2621
2622 out:
2623         up(&qla_fw_lock);
2624         return blob;
2625 }
2626
2627 static void
2628 qla2x00_release_firmware(void)
2629 {
2630         int idx;
2631
2632         down(&qla_fw_lock);
2633         for (idx = 0; idx < FW_BLOBS; idx++)
2634                 if (qla_fw_blobs[idx].fw)
2635                         release_firmware(qla_fw_blobs[idx].fw);
2636         up(&qla_fw_lock);
2637 }
2638
2639 static struct pci_device_id qla2xxx_pci_tbl[] = {
2640         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2641         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2642         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2643         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2644         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2645         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2646         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2647         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2648         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2649         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2650         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2651         { 0 },
2652 };
2653 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2654
2655 static int __devinit
2656 qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2657 {
2658         return qla2x00_probe_one(pdev);
2659 }
2660
2661 static void __devexit
2662 qla2xxx_remove_one(struct pci_dev *pdev)
2663 {
2664         qla2x00_remove_one(pdev);
2665 }
2666
2667 static struct pci_driver qla2xxx_pci_driver = {
2668         .name           = QLA2XXX_DRIVER_NAME,
2669         .driver         = {
2670                 .owner          = THIS_MODULE,
2671         },
2672         .id_table       = qla2xxx_pci_tbl,
2673         .probe          = qla2xxx_probe_one,
2674         .remove         = __devexit_p(qla2xxx_remove_one),
2675 };
2676
2677 static inline int
2678 qla2x00_pci_module_init(void)
2679 {
2680         return pci_module_init(&qla2xxx_pci_driver);
2681 }
2682
2683 static inline void
2684 qla2x00_pci_module_exit(void)
2685 {
2686         pci_unregister_driver(&qla2xxx_pci_driver);
2687 }
2688
2689 /**
2690  * qla2x00_module_init - Module initialization.
2691  **/
2692 static int __init
2693 qla2x00_module_init(void)
2694 {
2695         int ret = 0;
2696
2697         /* Allocate cache for SRBs. */
2698         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2699             SLAB_HWCACHE_ALIGN, NULL, NULL);
2700         if (srb_cachep == NULL) {
2701                 printk(KERN_ERR
2702                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2703                 return -ENOMEM;
2704         }
2705
2706         /* Derive version string. */
2707         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2708 #if DEBUG_QLA2100
2709         strcat(qla2x00_version_str, "-debug");
2710 #endif
2711         qla2xxx_transport_template =
2712             fc_attach_transport(&qla2xxx_transport_functions);
2713         if (!qla2xxx_transport_template)
2714                 return -ENODEV;
2715
2716         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2717         ret = qla2x00_pci_module_init();
2718         if (ret) {
2719                 kmem_cache_destroy(srb_cachep);
2720                 fc_release_transport(qla2xxx_transport_template);
2721         }
2722         return ret;
2723 }
2724
2725 /**
2726  * qla2x00_module_exit - Module cleanup.
2727  **/
2728 static void __exit
2729 qla2x00_module_exit(void)
2730 {
2731         qla2x00_pci_module_exit();
2732         qla2x00_release_firmware();
2733         kmem_cache_destroy(srb_cachep);
2734         fc_release_transport(qla2xxx_transport_template);
2735 }
2736
2737 module_init(qla2x00_module_init);
2738 module_exit(qla2x00_module_exit);
2739
2740 MODULE_AUTHOR("QLogic Corporation");
2741 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2742 MODULE_LICENSE("GPL");
2743 MODULE_VERSION(QLA2XXX_VERSION);