drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static kmem_cache_t *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry = 30;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns "
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches. "
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 int ql2xallocfwdump = 1;
  58 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  59 MODULE_PARM_DESC(ql2xallocfwdump,
  60                 "Option to enable allocation of memory for a firmware dump "
  61                 "during HBA initialization.  Memory allocation requirements "
  62                 "vary by ISP type.  Default is 1 - allocate memory.");
  63
  64 int extended_error_logging;
  65 module_param(extended_error_logging, int, S_IRUGO|S_IRUSR);
  66 MODULE_PARM_DESC(extended_error_logging,
  67                 "Option to enable extended error logging, "
  68                 "Default is 0 - no logging. 1 - log errors.");
  69
  70 static void qla2x00_free_device(scsi_qla_host_t *);
  71
  72 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  73
  74 int ql2xfdmienable;
  75 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xfdmienable,
  77                 "Enables FDMI registratons "
  78                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  79
  80 /*
  81  * SCSI host template entry points
  82  */
  83 static int qla2xxx_slave_configure(struct scsi_device * device);
  84 static int qla2xxx_slave_alloc(struct scsi_device *);
  85 static void qla2xxx_slave_destroy(struct scsi_device *);
  86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
  87                 void (*fn)(struct scsi_cmnd *));
  88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
  89                 void (*fn)(struct scsi_cmnd *));
  90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
  91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
  92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
  93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
  94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
  95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
  96
  97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
  98 static int qla2x00_change_queue_type(struct scsi_device *, int);
  99
 100 static struct scsi_host_template qla2x00_driver_template = {
 101         .module                 = THIS_MODULE,
 102         .name                   = QLA2XXX_DRIVER_NAME,
 103         .queuecommand           = qla2x00_queuecommand,
 104
 105         .eh_abort_handler       = qla2xxx_eh_abort,
 106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 109
 110         .slave_configure        = qla2xxx_slave_configure,
 111
 112         .slave_alloc            = qla2xxx_slave_alloc,
 113         .slave_destroy          = qla2xxx_slave_destroy,
 114         .change_queue_depth     = qla2x00_change_queue_depth,
 115         .change_queue_type      = qla2x00_change_queue_type,
 116         .this_id                = -1,
 117         .cmd_per_lun            = 3,
 118         .use_clustering         = ENABLE_CLUSTERING,
 119         .sg_tablesize           = SG_ALL,
 120
 121         /*
 122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 123          * which equates to 0x800000 sectors.
 124          */
 125         .max_sectors            = 0xFFFF,
 126         .shost_attrs            = qla2x00_host_attrs,
 127 };
 128
 129 static struct scsi_host_template qla24xx_driver_template = {
 130         .module                 = THIS_MODULE,
 131         .name                   = QLA2XXX_DRIVER_NAME,
 132         .queuecommand           = qla24xx_queuecommand,
 133
 134         .eh_abort_handler       = qla2xxx_eh_abort,
 135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 138
 139         .slave_configure        = qla2xxx_slave_configure,
 140
 141         .slave_alloc            = qla2xxx_slave_alloc,
 142         .slave_destroy          = qla2xxx_slave_destroy,
 143         .change_queue_depth     = qla2x00_change_queue_depth,
 144         .change_queue_type      = qla2x00_change_queue_type,
 145         .this_id                = -1,
 146         .cmd_per_lun            = 3,
 147         .use_clustering         = ENABLE_CLUSTERING,
 148         .sg_tablesize           = SG_ALL,
 149
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 155
 156 /* TODO Convert to inlines
 157  *
 158  * Timer routines
 159  */
 160 #define WATCH_INTERVAL          1       /* number of seconds */
 161
 162 static void qla2x00_timer(scsi_qla_host_t *);
 163
 164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 165     void *, unsigned long);
 166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 168
 169 static inline void
 170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 171 {
 172         init_timer(&ha->timer);
 173         ha->timer.expires = jiffies + interval * HZ;
 174         ha->timer.data = (unsigned long)ha;
 175         ha->timer.function = (void (*)(unsigned long))func;
 176         add_timer(&ha->timer);
 177         ha->timer_active = 1;
 178 }
 179
 180 static inline void
 181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 182 {
 183         mod_timer(&ha->timer, jiffies + interval * HZ);
 184 }
 185
 186 static __inline__ void
 187 qla2x00_stop_timer(scsi_qla_host_t *ha)
 188 {
 189         del_timer_sync(&ha->timer);
 190         ha->timer_active = 0;
 191 }
 192
 193 static int qla2x00_do_dpc(void *data);
 194
 195 static void qla2x00_rst_aen(scsi_qla_host_t *);
 196
 197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 203
 204 /* -------------------------------------------------------------------------- */
 205
 206 static char *
 207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 208 {
 209         static char *pci_bus_modes[] = {
 210                 "33", "66", "100", "133",
 211         };
 212         uint16_t pci_bus;
 213
 214         strcpy(str, "PCI");
 215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 216         if (pci_bus) {
 217                 strcat(str, "-X (");
 218                 strcat(str, pci_bus_modes[pci_bus]);
 219         } else {
 220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 221                 strcat(str, " (");
 222                 strcat(str, pci_bus_modes[pci_bus]);
 223         }
 224         strcat(str, " MHz)");
 225
 226         return (str);
 227 }
 228
 229 static char *
 230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 231 {
 232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 233         uint32_t pci_bus;
 234         int pcie_reg;
 235
 236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 237         if (pcie_reg) {
 238                 char lwstr[6];
 239                 uint16_t pcie_lstat, lspeed, lwidth;
 240
 241                 pcie_reg += 0x12;
 242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 244                 lwidth = (pcie_lstat &
 245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 246
 247                 strcpy(str, "PCIe (");
 248                 if (lspeed == 1)
 249                         strcat(str, "2.5Gb/s ");
 250                 else
 251                         strcat(str, "<unknown> ");
 252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 253                 strcat(str, lwstr);
 254
 255                 return str;
 256         }
 257
 258         strcpy(str, "PCI");
 259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 260         if (pci_bus == 0 || pci_bus == 8) {
 261                 strcat(str, " (");
 262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 263         } else {
 264                 strcat(str, "-X ");
 265                 if (pci_bus & BIT_2)
 266                         strcat(str, "Mode 2");
 267                 else
 268                         strcat(str, "Mode 1");
 269                 strcat(str, " (");
 270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 271         }
 272         strcat(str, " MHz)");
 273
 274         return str;
 275 }
 276
 277 char *
 278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 279 {
 280         char un_str[10];
 281
 282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 283             ha->fw_minor_version,
 284             ha->fw_subminor_version);
 285
 286         if (ha->fw_attributes & BIT_9) {
 287                 strcat(str, "FLX");
 288                 return (str);
 289         }
 290
 291         switch (ha->fw_attributes & 0xFF) {
 292         case 0x7:
 293                 strcat(str, "EF");
 294                 break;
 295         case 0x17:
 296                 strcat(str, "TP");
 297                 break;
 298         case 0x37:
 299                 strcat(str, "IP");
 300                 break;
 301         case 0x77:
 302                 strcat(str, "VI");
 303                 break;
 304         default:
 305                 sprintf(un_str, "(%x)", ha->fw_attributes);
 306                 strcat(str, un_str);
 307                 break;
 308         }
 309         if (ha->fw_attributes & 0x100)
 310                 strcat(str, "X");
 311
 312         return (str);
 313 }
 314
 315 char *
 316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 317 {
 318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 319             ha->fw_minor_version,
 320             ha->fw_subminor_version);
 321
 322         if (ha->fw_attributes & BIT_0)
 323                 strcat(str, "[Class 2] ");
 324         if (ha->fw_attributes & BIT_1)
 325                 strcat(str, "[IP] ");
 326         if (ha->fw_attributes & BIT_2)
 327                 strcat(str, "[Multi-ID] ");
 328         if (ha->fw_attributes & BIT_13)
 329                 strcat(str, "[Experimental]");
 330         return str;
 331 }
 332
 333 static inline srb_t *
 334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 336 {
 337         srb_t *sp;
 338
 339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 340         if (!sp)
 341                 return sp;
 342
 343         sp->ha = ha;
 344         sp->fcport = fcport;
 345         sp->cmd = cmd;
 346         sp->flags = 0;
 347         CMD_SP(cmd) = (void *)sp;
 348         cmd->scsi_done = done;
 349
 350         return sp;
 351 }
 352
 353 static int
 354 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 355 {
 356         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 357         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 358         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 359         srb_t *sp;
 360         int rval;
 361
 362         rval = fc_remote_port_chkready(rport);
 363         if (rval) {
 364                 cmd->result = rval;
 365                 goto qc_fail_command;
 366         }
 367
 368         /* Close window on fcport/rport state-transitioning. */
 369         if (!*(fc_port_t **)rport->dd_data) {
 370                 cmd->result = DID_IMM_RETRY << 16;
 371                 goto qc_fail_command;
 372         }
 373
 374         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 375                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 376                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 377                         cmd->result = DID_NO_CONNECT << 16;
 378                         goto qc_fail_command;
 379                 }
 380                 goto qc_host_busy;
 381         }
 382
 383         spin_unlock_irq(ha->host->host_lock);
 384
 385         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 386         if (!sp)
 387                 goto qc_host_busy_lock;
 388
 389         rval = qla2x00_start_scsi(sp);
 390         if (rval != QLA_SUCCESS)
 391                 goto qc_host_busy_free_sp;
 392
 393         spin_lock_irq(ha->host->host_lock);
 394
 395         return 0;
 396
 397 qc_host_busy_free_sp:
 398         qla2x00_sp_free_dma(ha, sp);
 399         mempool_free(sp, ha->srb_mempool);
 400
 401 qc_host_busy_lock:
 402         spin_lock_irq(ha->host->host_lock);
 403
 404 qc_host_busy:
 405         return SCSI_MLQUEUE_HOST_BUSY;
 406
 407 qc_fail_command:
 408         done(cmd);
 409
 410         return 0;
 411 }
 412
 413
 414 static int
 415 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 416 {
 417         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 418         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 419         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 420         srb_t *sp;
 421         int rval;
 422
 423         rval = fc_remote_port_chkready(rport);
 424         if (rval) {
 425                 cmd->result = rval;
 426                 goto qc24_fail_command;
 427         }
 428
 429         /* Close window on fcport/rport state-transitioning. */
 430         if (!*(fc_port_t **)rport->dd_data) {
 431                 cmd->result = DID_IMM_RETRY << 16;
 432                 goto qc24_fail_command;
 433         }
 434
 435         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 436                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 437                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 438                         cmd->result = DID_NO_CONNECT << 16;
 439                         goto qc24_fail_command;
 440                 }
 441                 goto qc24_host_busy;
 442         }
 443
 444         spin_unlock_irq(ha->host->host_lock);
 445
 446         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 447         if (!sp)
 448                 goto qc24_host_busy_lock;
 449
 450         rval = qla24xx_start_scsi(sp);
 451         if (rval != QLA_SUCCESS)
 452                 goto qc24_host_busy_free_sp;
 453
 454         spin_lock_irq(ha->host->host_lock);
 455
 456         return 0;
 457
 458 qc24_host_busy_free_sp:
 459         qla2x00_sp_free_dma(ha, sp);
 460         mempool_free(sp, ha->srb_mempool);
 461
 462 qc24_host_busy_lock:
 463         spin_lock_irq(ha->host->host_lock);
 464
 465 qc24_host_busy:
 466         return SCSI_MLQUEUE_HOST_BUSY;
 467
 468 qc24_fail_command:
 469         done(cmd);
 470
 471         return 0;
 472 }
 473
 474
 475 /*
 476  * qla2x00_eh_wait_on_command
 477  *    Waits for the command to be returned by the Firmware for some
 478  *    max time.
 479  *
 480  * Input:
 481  *    ha = actual ha whose done queue will contain the command
 482  *            returned by firmware.
 483  *    cmd = Scsi Command to wait on.
 484  *    flag = Abort/Reset(Bus or Device Reset)
 485  *
 486  * Return:
 487  *    Not Found : 0
 488  *    Found : 1
 489  */
 490 static int
 491 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 492 {
 493 #define ABORT_POLLING_PERIOD    1000
 494 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 495         unsigned long wait_iter = ABORT_WAIT_ITER;
 496         int ret = QLA_SUCCESS;
 497
 498         while (CMD_SP(cmd)) {
 499                 msleep(ABORT_POLLING_PERIOD);
 500
 501                 if (--wait_iter)
 502                         break;
 503         }
 504         if (CMD_SP(cmd))
 505                 ret = QLA_FUNCTION_FAILED;
 506
 507         return ret;
 508 }
 509
 510 /*
 511  * qla2x00_wait_for_hba_online
 512  *    Wait till the HBA is online after going through
 513  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 514  *    finally HBA is disabled ie marked offline
 515  *
 516  * Input:
 517  *     ha - pointer to host adapter structure
 518  *
 519  * Note:
 520  *    Does context switching-Release SPIN_LOCK
 521  *    (if any) before calling this routine.
 522  *
 523  * Return:
 524  *    Success (Adapter is online) : 0
 525  *    Failed  (Adapter is offline/disabled) : 1
 526  */
 527 int
 528 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 529 {
 530         int             return_status;
 531         unsigned long   wait_online;
 532
 533         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 534         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 535             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 536             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 537             ha->dpc_active) && time_before(jiffies, wait_online)) {
 538
 539                 msleep(1000);
 540         }
 541         if (ha->flags.online)
 542                 return_status = QLA_SUCCESS;
 543         else
 544                 return_status = QLA_FUNCTION_FAILED;
 545
 546         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 547
 548         return (return_status);
 549 }
 550
 551 /*
 552  * qla2x00_wait_for_loop_ready
 553  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 554  *    to be in LOOP_READY state.
 555  * Input:
 556  *     ha - pointer to host adapter structure
 557  *
 558  * Note:
 559  *    Does context switching-Release SPIN_LOCK
 560  *    (if any) before calling this routine.
 561  *
 562  *
 563  * Return:
 564  *    Success (LOOP_READY) : 0
 565  *    Failed  (LOOP_NOT_READY) : 1
 566  */
 567 static inline int
 568 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 569 {
 570         int      return_status = QLA_SUCCESS;
 571         unsigned long loop_timeout ;
 572
 573         /* wait for 5 min at the max for loop to be ready */
 574         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 575
 576         while ((!atomic_read(&ha->loop_down_timer) &&
 577             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 578             atomic_read(&ha->loop_state) != LOOP_READY) {
 579                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 580                         return_status = QLA_FUNCTION_FAILED;
 581                         break;
 582                 }
 583                 msleep(1000);
 584                 if (time_after_eq(jiffies, loop_timeout)) {
 585                         return_status = QLA_FUNCTION_FAILED;
 586                         break;
 587                 }
 588         }
 589         return (return_status);
 590 }
 591
 592 /**************************************************************************
 593 * qla2xxx_eh_abort
 594 *
 595 * Description:
 596 *    The abort function will abort the specified command.
 597 *
 598 * Input:
 599 *    cmd = Linux SCSI command packet to be aborted.
 600 *
 601 * Returns:
 602 *    Either SUCCESS or FAILED.
 603 *
 604 * Note:
 605 *    Only return FAILED if command not returned by firmware.
 606 **************************************************************************/
 607 int
 608 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 609 {
 610         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 611         srb_t *sp;
 612         int ret, i;
 613         unsigned int id, lun;
 614         unsigned long serial;
 615         unsigned long flags;
 616         int wait = 0;
 617
 618         if (!CMD_SP(cmd))
 619                 return SUCCESS;
 620
 621         ret = SUCCESS;
 622
 623         id = cmd->device->id;
 624         lun = cmd->device->lun;
 625         serial = cmd->serial_number;
 626
 627         /* Check active list for command command. */
 628         spin_lock_irqsave(&ha->hardware_lock, flags);
 629         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 630                 sp = ha->outstanding_cmds[i];
 631
 632                 if (sp == NULL)
 633                         continue;
 634
 635                 if (sp->cmd != cmd)
 636                         continue;
 637
 638                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 639                     __func__, ha->host_no, sp, serial));
 640                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 641
 642                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 643                 if (ha->isp_ops.abort_command(ha, sp)) {
 644                         DEBUG2(printk("%s(%ld): abort_command "
 645                             "mbx failed.\n", __func__, ha->host_no));
 646                 } else {
 647                         DEBUG3(printk("%s(%ld): abort_command "
 648                             "mbx success.\n", __func__, ha->host_no));
 649                         wait = 1;
 650                 }
 651                 spin_lock_irqsave(&ha->hardware_lock, flags);
 652
 653                 break;
 654         }
 655         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 656
 657         /* Wait for the command to be returned. */
 658         if (wait) {
 659                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 660                         qla_printk(KERN_ERR, ha,
 661                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 662                             "%x.\n", ha->host_no, id, lun, serial, ret);
 663                         ret = FAILED;
 664                 }
 665         }
 666
 667         qla_printk(KERN_INFO, ha,
 668             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 669             ha->host_no, id, lun, wait, serial, ret);
 670
 671         return ret;
 672 }
 673
 674 /**************************************************************************
 675 * qla2x00_eh_wait_for_pending_target_commands
 676 *
 677 * Description:
 678 *    Waits for all the commands to come back from the specified target.
 679 *
 680 * Input:
 681 *    ha - pointer to scsi_qla_host structure.
 682 *    t  - target
 683 * Returns:
 684 *    Either SUCCESS or FAILED.
 685 *
 686 * Note:
 687 **************************************************************************/
 688 static int
 689 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 690 {
 691         int     cnt;
 692         int     status;
 693         srb_t           *sp;
 694         struct scsi_cmnd *cmd;
 695         unsigned long flags;
 696
 697         status = 0;
 698
 699         /*
 700          * Waiting for all commands for the designated target in the active
 701          * array
 702          */
 703         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 704                 spin_lock_irqsave(&ha->hardware_lock, flags);
 705                 sp = ha->outstanding_cmds[cnt];
 706                 if (sp) {
 707                         cmd = sp->cmd;
 708                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 709                         if (cmd->device->id == t) {
 710                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 711                                         status = 1;
 712                                         break;
 713                                 }
 714                         }
 715                 } else {
 716                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 717                 }
 718         }
 719         return (status);
 720 }
 721
 722
 723 /**************************************************************************
 724 * qla2xxx_eh_device_reset
 725 *
 726 * Description:
 727 *    The device reset function will reset the target and abort any
 728 *    executing commands.
 729 *
 730 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 731 *          attempt to use this value, even if you determine it is
 732 *          non-null.
 733 *
 734 * Input:
 735 *    cmd = Linux SCSI command packet of the command that cause the
 736 *          bus device reset.
 737 *
 738 * Returns:
 739 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 740 *
 741 **************************************************************************/
 742 int
 743 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 744 {
 745         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 746         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 747         int ret;
 748         unsigned int id, lun;
 749         unsigned long serial;
 750
 751         ret = FAILED;
 752
 753         id = cmd->device->id;
 754         lun = cmd->device->lun;
 755         serial = cmd->serial_number;
 756
 757         if (!fcport)
 758                 return ret;
 759
 760         qla_printk(KERN_INFO, ha,
 761             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 762
 763         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 764                 goto eh_dev_reset_done;
 765
 766         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 767                 if (qla2x00_device_reset(ha, fcport) == 0)
 768                         ret = SUCCESS;
 769
 770 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 771                 if (ret == SUCCESS) {
 772                         if (fcport->flags & FC_FABRIC_DEVICE) {
 773                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 774                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 775                         }
 776                 }
 777 #endif
 778         } else {
 779                 DEBUG2(printk(KERN_INFO
 780                     "%s failed: loop not ready\n",__func__));
 781         }
 782
 783         if (ret == FAILED) {
 784                 DEBUG3(printk("%s(%ld): device reset failed\n",
 785                     __func__, ha->host_no));
 786                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 787                     __func__);
 788
 789                 goto eh_dev_reset_done;
 790         }
 791
 792         /* Flush outstanding commands. */
 793         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 794                 ret = FAILED;
 795         if (ret == FAILED) {
 796                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 797                     __func__, ha->host_no));
 798                 qla_printk(KERN_INFO, ha,
 799                     "%s: failed while waiting for commands\n", __func__);
 800         } else
 801                 qla_printk(KERN_INFO, ha,
 802                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 803                     id, lun);
 804  eh_dev_reset_done:
 805         return ret;
 806 }
 807
 808 /**************************************************************************
 809 * qla2x00_eh_wait_for_pending_commands
 810 *
 811 * Description:
 812 *    Waits for all the commands to come back from the specified host.
 813 *
 814 * Input:
 815 *    ha - pointer to scsi_qla_host structure.
 816 *
 817 * Returns:
 818 *    1 : SUCCESS
 819 *    0 : FAILED
 820 *
 821 * Note:
 822 **************************************************************************/
 823 static int
 824 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 825 {
 826         int     cnt;
 827         int     status;
 828         srb_t           *sp;
 829         struct scsi_cmnd *cmd;
 830         unsigned long flags;
 831
 832         status = 1;
 833
 834         /*
 835          * Waiting for all commands for the designated target in the active
 836          * array
 837          */
 838         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 839                 spin_lock_irqsave(&ha->hardware_lock, flags);
 840                 sp = ha->outstanding_cmds[cnt];
 841                 if (sp) {
 842                         cmd = sp->cmd;
 843                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 844                         status = qla2x00_eh_wait_on_command(ha, cmd);
 845                         if (status == 0)
 846                                 break;
 847                 }
 848                 else {
 849                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 850                 }
 851         }
 852         return (status);
 853 }
 854
 855
 856 /**************************************************************************
 857 * qla2xxx_eh_bus_reset
 858 *
 859 * Description:
 860 *    The bus reset function will reset the bus and abort any executing
 861 *    commands.
 862 *
 863 * Input:
 864 *    cmd = Linux SCSI command packet of the command that cause the
 865 *          bus reset.
 866 *
 867 * Returns:
 868 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 869 *
 870 **************************************************************************/
 871 int
 872 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 873 {
 874         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 875         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 876         int ret;
 877         unsigned int id, lun;
 878         unsigned long serial;
 879
 880         ret = FAILED;
 881
 882         id = cmd->device->id;
 883         lun = cmd->device->lun;
 884         serial = cmd->serial_number;
 885
 886         if (!fcport)
 887                 return ret;
 888
 889         qla_printk(KERN_INFO, ha,
 890             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 891
 892         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 893                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 894                 goto eh_bus_reset_done;
 895         }
 896
 897         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 898                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 899                         ret = SUCCESS;
 900         }
 901         if (ret == FAILED)
 902                 goto eh_bus_reset_done;
 903
 904         /* Flush outstanding commands. */
 905         if (!qla2x00_eh_wait_for_pending_commands(ha))
 906                 ret = FAILED;
 907
 908 eh_bus_reset_done:
 909         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 910             (ret == FAILED) ? "failed" : "succeded");
 911
 912         return ret;
 913 }
 914
 915 /**************************************************************************
 916 * qla2xxx_eh_host_reset
 917 *
 918 * Description:
 919 *    The reset function will reset the Adapter.
 920 *
 921 * Input:
 922 *      cmd = Linux SCSI command packet of the command that cause the
 923 *            adapter reset.
 924 *
 925 * Returns:
 926 *      Either SUCCESS or FAILED.
 927 *
 928 * Note:
 929 **************************************************************************/
 930 int
 931 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 932 {
 933         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 934         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 935         int ret;
 936         unsigned int id, lun;
 937         unsigned long serial;
 938
 939         ret = FAILED;
 940
 941         id = cmd->device->id;
 942         lun = cmd->device->lun;
 943         serial = cmd->serial_number;
 944
 945         if (!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 __devinit
1335 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1336 {
1337         int     ret = -ENODEV;
1338         device_reg_t __iomem *reg;
1339         struct Scsi_Host *host;
1340         scsi_qla_host_t *ha;
1341         unsigned long   flags = 0;
1342         unsigned long   wait_switch = 0;
1343         char pci_info[20];
1344         char fw_str[30];
1345         fc_port_t *fcport;
1346         struct scsi_host_template *sht;
1347
1348         if (pci_enable_device(pdev))
1349                 goto probe_out;
1350
1351         sht = &qla2x00_driver_template;
1352         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1353             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1354                 sht = &qla24xx_driver_template;
1355         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1356         if (host == NULL) {
1357                 printk(KERN_WARNING
1358                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1359                 goto probe_disable_device;
1360         }
1361
1362         /* Clear our data area */
1363         ha = (scsi_qla_host_t *)host->hostdata;
1364         memset(ha, 0, sizeof(scsi_qla_host_t));
1365
1366         ha->pdev = pdev;
1367         ha->host = host;
1368         ha->host_no = host->host_no;
1369         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1370
1371         /* Set ISP-type information. */
1372         qla2x00_set_isp_flags(ha);
1373
1374         /* Configure PCI I/O space */
1375         ret = qla2x00_iospace_config(ha);
1376         if (ret)
1377                 goto probe_failed;
1378
1379         qla_printk(KERN_INFO, ha,
1380             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1381             ha->iobase);
1382
1383         spin_lock_init(&ha->hardware_lock);
1384
1385         ha->prev_topology = 0;
1386         ha->init_cb_size = sizeof(init_cb_t);
1387         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1388         ha->link_data_rate = LDR_UNKNOWN;
1389         ha->optrom_size = OPTROM_SIZE_2300;
1390
1391         /* Assign ISP specific operations. */
1392         ha->isp_ops.pci_config          = qla2100_pci_config;
1393         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1394         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1395         ha->isp_ops.config_rings        = qla2x00_config_rings;
1396         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1397         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1398         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1399         ha->isp_ops.load_risc           = qla2x00_load_risc;
1400         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1401         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1402         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1403         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1404         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1405         ha->isp_ops.abort_command       = qla2x00_abort_command;
1406         ha->isp_ops.abort_target        = qla2x00_abort_target;
1407         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1408         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1409         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1410         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1411         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1412         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1413         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1414         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1415         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1416         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1417         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1418         if (IS_QLA2100(ha)) {
1419                 host->max_id = MAX_TARGETS_2100;
1420                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1421                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1422                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1423                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1424                 host->sg_tablesize = 32;
1425                 ha->gid_list_info_size = 4;
1426         } else if (IS_QLA2200(ha)) {
1427                 host->max_id = MAX_TARGETS_2200;
1428                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1429                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1430                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1431                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1432                 ha->gid_list_info_size = 4;
1433         } else if (IS_QLA23XX(ha)) {
1434                 host->max_id = MAX_TARGETS_2200;
1435                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1436                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1437                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1438                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1439                 ha->isp_ops.pci_config = qla2300_pci_config;
1440                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1441                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1442                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1443                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1444                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1445                 ha->gid_list_info_size = 6;
1446                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1447                         ha->optrom_size = OPTROM_SIZE_2322;
1448         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1449                 host->max_id = MAX_TARGETS_2200;
1450                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1451                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1452                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1453                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1454                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1455                 ha->mgmt_svr_loop_id = 10;
1456                 ha->isp_ops.pci_config = qla24xx_pci_config;
1457                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1458                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1459                 ha->isp_ops.config_rings = qla24xx_config_rings;
1460                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1461                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1462                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1463                 ha->isp_ops.load_risc = qla24xx_load_risc;
1464                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1465                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1466                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1467                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1468                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1469                 ha->isp_ops.abort_command = qla24xx_abort_command;
1470                 ha->isp_ops.abort_target = qla24xx_abort_target;
1471                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1472                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1473                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1474                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1475                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1476                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1477                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1478                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1479                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1480                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1481                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1482                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1483                 ha->gid_list_info_size = 8;
1484                 ha->optrom_size = OPTROM_SIZE_24XX;
1485         }
1486         host->can_queue = ha->request_q_length + 128;
1487
1488         /* load the F/W, read paramaters, and init the H/W */
1489         ha->instance = num_hosts;
1490
1491         init_MUTEX(&ha->mbx_cmd_sem);
1492         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1493
1494         INIT_LIST_HEAD(&ha->list);
1495         INIT_LIST_HEAD(&ha->fcports);
1496
1497         /*
1498          * These locks are used to prevent more than one CPU
1499          * from modifying the queue at the same time. The
1500          * higher level "host_lock" will reduce most
1501          * contention for these locks.
1502          */
1503         spin_lock_init(&ha->mbx_reg_lock);
1504
1505         qla2x00_config_dma_addressing(ha);
1506         if (qla2x00_mem_alloc(ha)) {
1507                 qla_printk(KERN_WARNING, ha,
1508                     "[ERROR] Failed to allocate memory for adapter\n");
1509
1510                 ret = -ENOMEM;
1511                 goto probe_failed;
1512         }
1513
1514         if (qla2x00_initialize_adapter(ha) &&
1515             !(ha->device_flags & DFLG_NO_CABLE)) {
1516
1517                 qla_printk(KERN_WARNING, ha,
1518                     "Failed to initialize adapter\n");
1519
1520                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1521                     "Adapter flags %x.\n",
1522                     ha->host_no, ha->device_flags));
1523
1524                 ret = -ENODEV;
1525                 goto probe_failed;
1526         }
1527
1528         /*
1529          * Startup the kernel thread for this host adapter
1530          */
1531         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1532                         "%s_dpc", ha->host_str);
1533         if (IS_ERR(ha->dpc_thread)) {
1534                 qla_printk(KERN_WARNING, ha,
1535                     "Unable to start DPC thread!\n");
1536                 ret = PTR_ERR(ha->dpc_thread);
1537                 goto probe_failed;
1538         }
1539
1540         host->this_id = 255;
1541         host->cmd_per_lun = 3;
1542         host->unique_id = ha->instance;
1543         host->max_cmd_len = MAX_CMDSZ;
1544         host->max_channel = MAX_BUSES - 1;
1545         host->max_lun = MAX_LUNS;
1546         host->transportt = qla2xxx_transport_template;
1547
1548         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1549             IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1550         if (ret) {
1551                 qla_printk(KERN_WARNING, ha,
1552                     "Failed to reserve interrupt %d already in use.\n",
1553                     pdev->irq);
1554                 goto probe_failed;
1555         }
1556         host->irq = pdev->irq;
1557
1558         /* Initialized the timer */
1559         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1560
1561         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1562             ha->host_no, ha));
1563
1564         ha->isp_ops.disable_intrs(ha);
1565
1566         spin_lock_irqsave(&ha->hardware_lock, flags);
1567         reg = ha->iobase;
1568         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1569                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1570                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1571         } else {
1572                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1573                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1574                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1575
1576                 /* Enable proper parity */
1577                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1578                         if (IS_QLA2300(ha))
1579                                 /* SRAM parity */
1580                                 WRT_REG_WORD(&reg->isp.hccr,
1581                                     (HCCR_ENABLE_PARITY + 0x1));
1582                         else
1583                                 /* SRAM, Instruction RAM and GP RAM parity */
1584                                 WRT_REG_WORD(&reg->isp.hccr,
1585                                     (HCCR_ENABLE_PARITY + 0x7));
1586                 }
1587         }
1588         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1589
1590         ha->isp_ops.enable_intrs(ha);
1591
1592         /* v2.19.5b6 */
1593         /*
1594          * Wait around max loop_reset_delay secs for the devices to come
1595          * on-line. We don't want Linux scanning before we are ready.
1596          *
1597          */
1598         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1599             time_before(jiffies,wait_switch) &&
1600              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1601              && (ha->device_flags & SWITCH_FOUND) ;) {
1602
1603                 qla2x00_check_fabric_devices(ha);
1604
1605                 msleep(10);
1606         }
1607
1608         pci_set_drvdata(pdev, ha);
1609         ha->flags.init_done = 1;
1610         num_hosts++;
1611
1612         ret = scsi_add_host(host, &pdev->dev);
1613         if (ret)
1614                 goto probe_failed;
1615
1616         qla2x00_alloc_sysfs_attr(ha);
1617
1618         qla2x00_init_host_attr(ha);
1619
1620         qla_printk(KERN_INFO, ha, "\n"
1621             " QLogic Fibre Channel HBA Driver: %s\n"
1622             "  QLogic %s - %s\n"
1623             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1624             qla2x00_version_str, ha->model_number,
1625             ha->model_desc ? ha->model_desc: "", pdev->device,
1626             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1627             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1628             ha->isp_ops.fw_version_str(ha, fw_str));
1629
1630         /* Go with fc_rport registration. */
1631         list_for_each_entry(fcport, &ha->fcports, list)
1632                 qla2x00_reg_remote_port(ha, fcport);
1633
1634         return 0;
1635
1636 probe_failed:
1637         qla2x00_free_device(ha);
1638
1639         scsi_host_put(host);
1640
1641 probe_disable_device:
1642         pci_disable_device(pdev);
1643
1644 probe_out:
1645         return ret;
1646 }
1647
1648 static void __devexit
1649 qla2x00_remove_one(struct pci_dev *pdev)
1650 {
1651         scsi_qla_host_t *ha;
1652
1653         ha = pci_get_drvdata(pdev);
1654
1655         qla2x00_free_sysfs_attr(ha);
1656
1657         fc_remove_host(ha->host);
1658
1659         scsi_remove_host(ha->host);
1660
1661         qla2x00_free_device(ha);
1662
1663         scsi_host_put(ha->host);
1664
1665         pci_set_drvdata(pdev, NULL);
1666 }
1667
1668 static void
1669 qla2x00_free_device(scsi_qla_host_t *ha)
1670 {
1671         /* Disable timer */
1672         if (ha->timer_active)
1673                 qla2x00_stop_timer(ha);
1674
1675         /* Kill the kernel thread for this host */
1676         if (ha->dpc_thread) {
1677                 struct task_struct *t = ha->dpc_thread;
1678
1679                 /*
1680                  * qla2xxx_wake_dpc checks for ->dpc_thread
1681                  * so we need to zero it out.
1682                  */
1683                 ha->dpc_thread = NULL;
1684                 kthread_stop(t);
1685         }
1686
1687         if (ha->eft)
1688                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1689
1690         /* Stop currently executing firmware. */
1691         qla2x00_stop_firmware(ha);
1692
1693         /* turn-off interrupts on the card */
1694         if (ha->interrupts_on)
1695                 ha->isp_ops.disable_intrs(ha);
1696
1697         qla2x00_mem_free(ha);
1698
1699         ha->flags.online = 0;
1700
1701         /* Detach interrupts */
1702         if (ha->host->irq)
1703                 free_irq(ha->host->irq, ha);
1704
1705         /* release io space registers  */
1706         if (ha->iobase)
1707                 iounmap(ha->iobase);
1708         pci_release_regions(ha->pdev);
1709
1710         pci_disable_device(ha->pdev);
1711 }
1712
1713 static inline void
1714 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1715     int defer)
1716 {
1717         unsigned long flags;
1718         struct fc_rport *rport;
1719
1720         if (!fcport->rport)
1721                 return;
1722
1723         rport = fcport->rport;
1724         if (defer) {
1725                 spin_lock_irqsave(&fcport->rport_lock, flags);
1726                 fcport->drport = rport;
1727                 fcport->rport = NULL;
1728                 *(fc_port_t **)rport->dd_data = NULL;
1729                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1730                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1731         } else {
1732                 spin_lock_irqsave(&fcport->rport_lock, flags);
1733                 fcport->rport = NULL;
1734                 *(fc_port_t **)rport->dd_data = NULL;
1735                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1736                 fc_remote_port_delete(rport);
1737         }
1738 }
1739
1740 /*
1741  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1742  *
1743  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1744  *
1745  * Return: None.
1746  *
1747  * Context:
1748  */
1749 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1750     int do_login, int defer)
1751 {
1752         if (atomic_read(&fcport->state) == FCS_ONLINE)
1753                 qla2x00_schedule_rport_del(ha, fcport, defer);
1754
1755         /*
1756          * We may need to retry the login, so don't change the state of the
1757          * port but do the retries.
1758          */
1759         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1760                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1761
1762         if (!do_login)
1763                 return;
1764
1765         if (fcport->login_retry == 0) {
1766                 fcport->login_retry = ha->login_retry_count;
1767                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1768
1769                 DEBUG(printk("scsi(%ld): Port login retry: "
1770                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1771                     "id = 0x%04x retry cnt=%d\n",
1772                     ha->host_no,
1773                     fcport->port_name[0],
1774                     fcport->port_name[1],
1775                     fcport->port_name[2],
1776                     fcport->port_name[3],
1777                     fcport->port_name[4],
1778                     fcport->port_name[5],
1779                     fcport->port_name[6],
1780                     fcport->port_name[7],
1781                     fcport->loop_id,
1782                     fcport->login_retry));
1783         }
1784 }
1785
1786 /*
1787  * qla2x00_mark_all_devices_lost
1788  *      Updates fcport state when device goes offline.
1789  *
1790  * Input:
1791  *      ha = adapter block pointer.
1792  *      fcport = port structure pointer.
1793  *
1794  * Return:
1795  *      None.
1796  *
1797  * Context:
1798  */
1799 void
1800 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1801 {
1802         fc_port_t *fcport;
1803
1804         list_for_each_entry(fcport, &ha->fcports, list) {
1805                 if (fcport->port_type != FCT_TARGET)
1806                         continue;
1807
1808                 /*
1809                  * No point in marking the device as lost, if the device is
1810                  * already DEAD.
1811                  */
1812                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1813                         continue;
1814                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1815                         qla2x00_schedule_rport_del(ha, fcport, defer);
1816                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1817         }
1818
1819         if (defer)
1820                 qla2xxx_wake_dpc(ha);
1821 }
1822
1823 /*
1824 * qla2x00_mem_alloc
1825 *      Allocates adapter memory.
1826 *
1827 * Returns:
1828 *      0  = success.
1829 *      1  = failure.
1830 */
1831 static uint8_t
1832 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1833 {
1834         char    name[16];
1835         uint8_t   status = 1;
1836         int     retry= 10;
1837
1838         do {
1839                 /*
1840                  * This will loop only once if everything goes well, else some
1841                  * number of retries will be performed to get around a kernel
1842                  * bug where available mem is not allocated until after a
1843                  * little delay and a retry.
1844                  */
1845                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1846                     (ha->request_q_length + 1) * sizeof(request_t),
1847                     &ha->request_dma, GFP_KERNEL);
1848                 if (ha->request_ring == NULL) {
1849                         qla_printk(KERN_WARNING, ha,
1850                             "Memory Allocation failed - request_ring\n");
1851
1852                         qla2x00_mem_free(ha);
1853                         msleep(100);
1854
1855                         continue;
1856                 }
1857
1858                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1859                     (ha->response_q_length + 1) * sizeof(response_t),
1860                     &ha->response_dma, GFP_KERNEL);
1861                 if (ha->response_ring == NULL) {
1862                         qla_printk(KERN_WARNING, ha,
1863                             "Memory Allocation failed - response_ring\n");
1864
1865                         qla2x00_mem_free(ha);
1866                         msleep(100);
1867
1868                         continue;
1869                 }
1870
1871                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1872                     &ha->gid_list_dma, GFP_KERNEL);
1873                 if (ha->gid_list == NULL) {
1874                         qla_printk(KERN_WARNING, ha,
1875                             "Memory Allocation failed - gid_list\n");
1876
1877                         qla2x00_mem_free(ha);
1878                         msleep(100);
1879
1880                         continue;
1881                 }
1882
1883                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1884                     ha->host_no);
1885                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1886                     DMA_POOL_SIZE, 8, 0);
1887                 if (ha->s_dma_pool == NULL) {
1888                         qla_printk(KERN_WARNING, ha,
1889                             "Memory Allocation failed - s_dma_pool\n");
1890
1891                         qla2x00_mem_free(ha);
1892                         msleep(100);
1893
1894                         continue;
1895                 }
1896
1897                 /* get consistent memory allocated for init control block */
1898                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1899                     &ha->init_cb_dma);
1900                 if (ha->init_cb == NULL) {
1901                         qla_printk(KERN_WARNING, ha,
1902                             "Memory Allocation failed - init_cb\n");
1903
1904                         qla2x00_mem_free(ha);
1905                         msleep(100);
1906
1907                         continue;
1908                 }
1909                 memset(ha->init_cb, 0, ha->init_cb_size);
1910
1911                 if (qla2x00_allocate_sp_pool(ha)) {
1912                         qla_printk(KERN_WARNING, ha,
1913                             "Memory Allocation failed - "
1914                             "qla2x00_allocate_sp_pool()\n");
1915
1916                         qla2x00_mem_free(ha);
1917                         msleep(100);
1918
1919                         continue;
1920                 }
1921
1922                 /* Allocate memory for SNS commands */
1923                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1924                         /* Get consistent memory allocated for SNS commands */
1925                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1926                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1927                             GFP_KERNEL);
1928                         if (ha->sns_cmd == NULL) {
1929                                 /* error */
1930                                 qla_printk(KERN_WARNING, ha,
1931                                     "Memory Allocation failed - sns_cmd\n");
1932
1933                                 qla2x00_mem_free(ha);
1934                                 msleep(100);
1935
1936                                 continue;
1937                         }
1938                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1939                 } else {
1940                         /* Get consistent memory allocated for MS IOCB */
1941                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1942                             &ha->ms_iocb_dma);
1943                         if (ha->ms_iocb == NULL) {
1944                                 /* error */
1945                                 qla_printk(KERN_WARNING, ha,
1946                                     "Memory Allocation failed - ms_iocb\n");
1947
1948                                 qla2x00_mem_free(ha);
1949                                 msleep(100);
1950
1951                                 continue;
1952                         }
1953                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1954
1955                         /*
1956                          * Get consistent memory allocated for CT SNS
1957                          * commands
1958                          */
1959                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1960                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1961                             GFP_KERNEL);
1962                         if (ha->ct_sns == NULL) {
1963                                 /* error */
1964                                 qla_printk(KERN_WARNING, ha,
1965                                     "Memory Allocation failed - ct_sns\n");
1966
1967                                 qla2x00_mem_free(ha);
1968                                 msleep(100);
1969
1970                                 continue;
1971                         }
1972                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1973
1974                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1975                                 /*
1976                                  * Get consistent memory allocated for SFP
1977                                  * block.
1978                                  */
1979                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
1980                                     GFP_KERNEL, &ha->sfp_data_dma);
1981                                 if (ha->sfp_data == NULL) {
1982                                         qla_printk(KERN_WARNING, ha,
1983                                             "Memory Allocation failed - "
1984                                             "sfp_data\n");
1985
1986                                         qla2x00_mem_free(ha);
1987                                         msleep(100);
1988
1989                                         continue;
1990                                 }
1991                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
1992                         }
1993                 }
1994
1995                 /* Done all allocations without any error. */
1996                 status = 0;
1997
1998         } while (retry-- && status != 0);
1999
2000         if (status) {
2001                 printk(KERN_WARNING
2002                         "%s(): **** FAILED ****\n", __func__);
2003         }
2004
2005         return(status);
2006 }
2007
2008 /*
2009 * qla2x00_mem_free
2010 *      Frees all adapter allocated memory.
2011 *
2012 * Input:
2013 *      ha = adapter block pointer.
2014 */
2015 static void
2016 qla2x00_mem_free(scsi_qla_host_t *ha)
2017 {
2018         struct list_head        *fcpl, *fcptemp;
2019         fc_port_t       *fcport;
2020
2021         if (ha == NULL) {
2022                 /* error */
2023                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2024                 return;
2025         }
2026
2027         /* free sp pool */
2028         qla2x00_free_sp_pool(ha);
2029
2030         if (ha->fw_dump) {
2031                 if (ha->eft)
2032                         dma_free_coherent(&ha->pdev->dev,
2033                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2034                 vfree(ha->fw_dump);
2035         }
2036
2037         if (ha->sns_cmd)
2038                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2039                     ha->sns_cmd, ha->sns_cmd_dma);
2040
2041         if (ha->ct_sns)
2042                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2043                     ha->ct_sns, ha->ct_sns_dma);
2044
2045         if (ha->sfp_data)
2046                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2047
2048         if (ha->ms_iocb)
2049                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2050
2051         if (ha->init_cb)
2052                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2053
2054         if (ha->s_dma_pool)
2055                 dma_pool_destroy(ha->s_dma_pool);
2056
2057         if (ha->gid_list)
2058                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2059                     ha->gid_list_dma);
2060
2061         if (ha->response_ring)
2062                 dma_free_coherent(&ha->pdev->dev,
2063                     (ha->response_q_length + 1) * sizeof(response_t),
2064                     ha->response_ring, ha->response_dma);
2065
2066         if (ha->request_ring)
2067                 dma_free_coherent(&ha->pdev->dev,
2068                     (ha->request_q_length + 1) * sizeof(request_t),
2069                     ha->request_ring, ha->request_dma);
2070
2071         ha->eft = NULL;
2072         ha->eft_dma = 0;
2073         ha->sns_cmd = NULL;
2074         ha->sns_cmd_dma = 0;
2075         ha->ct_sns = NULL;
2076         ha->ct_sns_dma = 0;
2077         ha->ms_iocb = NULL;
2078         ha->ms_iocb_dma = 0;
2079         ha->init_cb = NULL;
2080         ha->init_cb_dma = 0;
2081
2082         ha->s_dma_pool = NULL;
2083
2084         ha->gid_list = NULL;
2085         ha->gid_list_dma = 0;
2086
2087         ha->response_ring = NULL;
2088         ha->response_dma = 0;
2089         ha->request_ring = NULL;
2090         ha->request_dma = 0;
2091
2092         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2093                 fcport = list_entry(fcpl, fc_port_t, list);
2094
2095                 /* fc ports */
2096                 list_del_init(&fcport->list);
2097                 kfree(fcport);
2098         }
2099         INIT_LIST_HEAD(&ha->fcports);
2100
2101         ha->fw_dump = NULL;
2102         ha->fw_dumped = 0;
2103         ha->fw_dump_reading = 0;
2104
2105         vfree(ha->optrom_buffer);
2106 }
2107
2108 /*
2109  * qla2x00_allocate_sp_pool
2110  *       This routine is called during initialization to allocate
2111  *       memory for local srb_t.
2112  *
2113  * Input:
2114  *       ha   = adapter block pointer.
2115  *
2116  * Context:
2117  *      Kernel context.
2118  */
2119 static int
2120 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2121 {
2122         int      rval;
2123
2124         rval = QLA_SUCCESS;
2125         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2126         if (ha->srb_mempool == NULL) {
2127                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2128                 rval = QLA_FUNCTION_FAILED;
2129         }
2130         return (rval);
2131 }
2132
2133 /*
2134  *  This routine frees all adapter allocated memory.
2135  *
2136  */
2137 static void
2138 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2139 {
2140         if (ha->srb_mempool) {
2141                 mempool_destroy(ha->srb_mempool);
2142                 ha->srb_mempool = NULL;
2143         }
2144 }
2145
2146 /**************************************************************************
2147 * qla2x00_do_dpc
2148 *   This kernel thread is a task that is schedule by the interrupt handler
2149 *   to perform the background processing for interrupts.
2150 *
2151 * Notes:
2152 * This task always run in the context of a kernel thread.  It
2153 * is kick-off by the driver's detect code and starts up
2154 * up one per adapter. It immediately goes to sleep and waits for
2155 * some fibre event.  When either the interrupt handler or
2156 * the timer routine detects a event it will one of the task
2157 * bits then wake us up.
2158 **************************************************************************/
2159 static int
2160 qla2x00_do_dpc(void *data)
2161 {
2162         scsi_qla_host_t *ha;
2163         fc_port_t       *fcport;
2164         uint8_t         status;
2165         uint16_t        next_loopid;
2166
2167         ha = (scsi_qla_host_t *)data;
2168
2169         set_user_nice(current, -20);
2170
2171         while (!kthread_should_stop()) {
2172                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2173
2174                 set_current_state(TASK_INTERRUPTIBLE);
2175                 schedule();
2176                 __set_current_state(TASK_RUNNING);
2177
2178                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2179
2180                 /* Initialization not yet finished. Don't do anything yet. */
2181                 if (!ha->flags.init_done)
2182                         continue;
2183
2184                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2185
2186                 ha->dpc_active = 1;
2187
2188                 if (ha->flags.mbox_busy) {
2189                         ha->dpc_active = 0;
2190                         continue;
2191                 }
2192
2193                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2194
2195                         DEBUG(printk("scsi(%ld): dpc: sched "
2196                             "qla2x00_abort_isp ha = %p\n",
2197                             ha->host_no, ha));
2198                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2199                             &ha->dpc_flags))) {
2200
2201                                 if (qla2x00_abort_isp(ha)) {
2202                                         /* failed. retry later */
2203                                         set_bit(ISP_ABORT_NEEDED,
2204                                             &ha->dpc_flags);
2205                                 }
2206                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2207                         }
2208                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2209                             ha->host_no));
2210                 }
2211
2212                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2213                         qla2x00_update_fcports(ha);
2214
2215                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2216                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2217                             ha->host_no));
2218                         qla2x00_loop_reset(ha);
2219                 }
2220
2221                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2222                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2223
2224                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2225                             ha->host_no));
2226
2227                         qla2x00_rst_aen(ha);
2228                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2229                 }
2230
2231                 /* Retry each device up to login retry count */
2232                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2233                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2234                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2235
2236                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2237                             ha->host_no));
2238
2239                         next_loopid = 0;
2240                         list_for_each_entry(fcport, &ha->fcports, list) {
2241                                 /*
2242                                  * If the port is not ONLINE then try to login
2243                                  * to it if we haven't run out of retries.
2244                                  */
2245                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2246                                     fcport->login_retry) {
2247
2248                                         fcport->login_retry--;
2249                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2250                                                 if (fcport->flags &
2251                                                     FCF_TAPE_PRESENT)
2252                                                         ha->isp_ops.fabric_logout(
2253                                                             ha, fcport->loop_id,
2254                                                             fcport->d_id.b.domain,
2255                                                             fcport->d_id.b.area,
2256                                                             fcport->d_id.b.al_pa);
2257                                                 status = qla2x00_fabric_login(
2258                                                     ha, fcport, &next_loopid);
2259                                         } else
2260                                                 status =
2261                                                     qla2x00_local_device_login(
2262                                                         ha, fcport);
2263
2264                                         if (status == QLA_SUCCESS) {
2265                                                 fcport->old_loop_id = fcport->loop_id;
2266
2267                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2268                                                     ha->host_no, fcport->loop_id));
2269
2270                                                 qla2x00_update_fcport(ha,
2271                                                     fcport);
2272                                         } else if (status == 1) {
2273                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2274                                                 /* retry the login again */
2275                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2276                                                     ha->host_no,
2277                                                     fcport->login_retry, fcport->loop_id));
2278                                         } else {
2279                                                 fcport->login_retry = 0;
2280                                         }
2281                                 }
2282                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2283                                         break;
2284                         }
2285                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2286                             ha->host_no));
2287                 }
2288
2289                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2290                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2291
2292                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2293                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2294                             ha->host_no));
2295
2296                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2297
2298                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2299                             ha->host_no));
2300                 }
2301
2302                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2303
2304                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2305                             ha->host_no));
2306
2307                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2308                             &ha->dpc_flags))) {
2309
2310                                 qla2x00_loop_resync(ha);
2311
2312                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2313                         }
2314
2315                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2316                             ha->host_no));
2317                 }
2318
2319                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2320
2321                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2322                             ha->host_no));
2323
2324                         qla2x00_rescan_fcports(ha);
2325
2326                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2327                             "end.\n",
2328                             ha->host_no));
2329                 }
2330
2331                 if (!ha->interrupts_on)
2332                         ha->isp_ops.enable_intrs(ha);
2333
2334                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2335                         ha->isp_ops.beacon_blink(ha);
2336
2337                 ha->dpc_active = 0;
2338         } /* End of while(1) */
2339
2340         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2341
2342         /*
2343          * Make sure that nobody tries to wake us up again.
2344          */
2345         ha->dpc_active = 0;
2346
2347         return 0;
2348 }
2349
2350 void
2351 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2352 {
2353         if (ha->dpc_thread)
2354                 wake_up_process(ha->dpc_thread);
2355 }
2356
2357 /*
2358 *  qla2x00_rst_aen
2359 *      Processes asynchronous reset.
2360 *
2361 * Input:
2362 *      ha  = adapter block pointer.
2363 */
2364 static void
2365 qla2x00_rst_aen(scsi_qla_host_t *ha)
2366 {
2367         if (ha->flags.online && !ha->flags.reset_active &&
2368             !atomic_read(&ha->loop_down_timer) &&
2369             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2370                 do {
2371                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2372
2373                         /*
2374                          * Issue marker command only when we are going to start
2375                          * the I/O.
2376                          */
2377                         ha->marker_needed = 1;
2378                 } while (!atomic_read(&ha->loop_down_timer) &&
2379                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2380         }
2381 }
2382
2383 static void
2384 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2385 {
2386         struct scsi_cmnd *cmd = sp->cmd;
2387
2388         if (sp->flags & SRB_DMA_VALID) {
2389                 if (cmd->use_sg) {
2390                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2391                             cmd->use_sg, cmd->sc_data_direction);
2392                 } else if (cmd->request_bufflen) {
2393                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2394                             cmd->request_bufflen, cmd->sc_data_direction);
2395                 }
2396                 sp->flags &= ~SRB_DMA_VALID;
2397         }
2398         CMD_SP(cmd) = NULL;
2399 }
2400
2401 void
2402 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2403 {
2404         struct scsi_cmnd *cmd = sp->cmd;
2405
2406         qla2x00_sp_free_dma(ha, sp);
2407
2408         mempool_free(sp, ha->srb_mempool);
2409
2410         cmd->scsi_done(cmd);
2411 }
2412
2413 /**************************************************************************
2414 *   qla2x00_timer
2415 *
2416 * Description:
2417 *   One second timer
2418 *
2419 * Context: Interrupt
2420 ***************************************************************************/
2421 static void
2422 qla2x00_timer(scsi_qla_host_t *ha)
2423 {
2424         unsigned long   cpu_flags = 0;
2425         fc_port_t       *fcport;
2426         int             start_dpc = 0;
2427         int             index;
2428         srb_t           *sp;
2429         int             t;
2430
2431         /*
2432          * Ports - Port down timer.
2433          *
2434          * Whenever, a port is in the LOST state we start decrementing its port
2435          * down timer every second until it reaches zero. Once  it reaches zero
2436          * the port it marked DEAD.
2437          */
2438         t = 0;
2439         list_for_each_entry(fcport, &ha->fcports, list) {
2440                 if (fcport->port_type != FCT_TARGET)
2441                         continue;
2442
2443                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2444
2445                         if (atomic_read(&fcport->port_down_timer) == 0)
2446                                 continue;
2447
2448                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2449                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2450
2451                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2452                             "%d remaining\n",
2453                             ha->host_no,
2454                             t, atomic_read(&fcport->port_down_timer)));
2455                 }
2456                 t++;
2457         } /* End of for fcport  */
2458
2459
2460         /* Loop down handler. */
2461         if (atomic_read(&ha->loop_down_timer) > 0 &&
2462             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2463
2464                 if (atomic_read(&ha->loop_down_timer) ==
2465                     ha->loop_down_abort_time) {
2466
2467                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2468                             "queues before time expire\n",
2469                             ha->host_no));
2470
2471                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2472                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2473
2474                         /* Schedule an ISP abort to return any tape commands. */
2475                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2476                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2477                             index++) {
2478                                 fc_port_t *sfcp;
2479
2480                                 sp = ha->outstanding_cmds[index];
2481                                 if (!sp)
2482                                         continue;
2483                                 sfcp = sp->fcport;
2484                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2485                                         continue;
2486
2487                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2488                                 break;
2489                         }
2490                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2491
2492                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2493                         start_dpc++;
2494                 }
2495
2496                 /* if the loop has been down for 4 minutes, reinit adapter */
2497                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2498                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2499                             "restarting queues.\n",
2500                             ha->host_no));
2501
2502                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2503                         start_dpc++;
2504
2505                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2506                                 DEBUG(printk("scsi(%ld): Loop down - "
2507                                     "aborting ISP.\n",
2508                                     ha->host_no));
2509                                 qla_printk(KERN_WARNING, ha,
2510                                     "Loop down - aborting ISP.\n");
2511
2512                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2513                         }
2514                 }
2515                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2516                     ha->host_no,
2517                     atomic_read(&ha->loop_down_timer)));
2518         }
2519
2520         /* Check if beacon LED needs to be blinked */
2521         if (ha->beacon_blink_led == 1) {
2522                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2523                 start_dpc++;
2524         }
2525
2526         /* Schedule the DPC routine if needed */
2527         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2528             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2529             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2530             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2531             start_dpc ||
2532             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2533             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2534             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2535             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2536                 qla2xxx_wake_dpc(ha);
2537
2538         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2539 }
2540
2541 /* XXX(hch): crude hack to emulate a down_timeout() */
2542 int
2543 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2544 {
2545         const unsigned int step = 100; /* msecs */
2546         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2547
2548         do {
2549                 if (!down_trylock(sema))
2550                         return 0;
2551                 if (msleep_interruptible(step))
2552                         break;
2553         } while (--iterations >= 0);
2554
2555         return -ETIMEDOUT;
2556 }
2557
2558 /* Firmware interface routines. */
2559
2560 #define FW_BLOBS        5
2561 #define FW_ISP21XX      0
2562 #define FW_ISP22XX      1
2563 #define FW_ISP2300      2
2564 #define FW_ISP2322      3
2565 #define FW_ISP24XX      4
2566
2567 static DECLARE_MUTEX(qla_fw_lock);
2568
2569 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2570         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2571         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2572         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2573         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2574         { .name = "ql2400_fw.bin", },
2575 };
2576
2577 struct fw_blob *
2578 qla2x00_request_firmware(scsi_qla_host_t *ha)
2579 {
2580         struct fw_blob *blob;
2581
2582         blob = NULL;
2583         if (IS_QLA2100(ha)) {
2584                 blob = &qla_fw_blobs[FW_ISP21XX];
2585         } else if (IS_QLA2200(ha)) {
2586                 blob = &qla_fw_blobs[FW_ISP22XX];
2587         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2588                 blob = &qla_fw_blobs[FW_ISP2300];
2589         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2590                 blob = &qla_fw_blobs[FW_ISP2322];
2591         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2592                 blob = &qla_fw_blobs[FW_ISP24XX];
2593         }
2594
2595         down(&qla_fw_lock);
2596         if (blob->fw)
2597                 goto out;
2598
2599         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2600                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2601                     "(%s).\n", ha->host_no, blob->name));
2602                 blob->fw = NULL;
2603                 blob = NULL;
2604                 goto out;
2605         }
2606
2607 out:
2608         up(&qla_fw_lock);
2609         return blob;
2610 }
2611
2612 static void
2613 qla2x00_release_firmware(void)
2614 {
2615         int idx;
2616
2617         down(&qla_fw_lock);
2618         for (idx = 0; idx < FW_BLOBS; idx++)
2619                 if (qla_fw_blobs[idx].fw)
2620                         release_firmware(qla_fw_blobs[idx].fw);
2621         up(&qla_fw_lock);
2622 }
2623
2624 static struct pci_device_id qla2xxx_pci_tbl[] = {
2625         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2626         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2627         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2628         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2629         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2630         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2631         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2632         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2633         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2634         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2635         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2636         { 0 },
2637 };
2638 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2639
2640 static struct pci_driver qla2xxx_pci_driver = {
2641         .name           = QLA2XXX_DRIVER_NAME,
2642         .driver         = {
2643                 .owner          = THIS_MODULE,
2644         },
2645         .id_table       = qla2xxx_pci_tbl,
2646         .probe          = qla2x00_probe_one,
2647         .remove         = __devexit_p(qla2x00_remove_one),
2648 };
2649
2650 /**
2651  * qla2x00_module_init - Module initialization.
2652  **/
2653 static int __init
2654 qla2x00_module_init(void)
2655 {
2656         int ret = 0;
2657
2658         /* Allocate cache for SRBs. */
2659         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2660             SLAB_HWCACHE_ALIGN, NULL, NULL);
2661         if (srb_cachep == NULL) {
2662                 printk(KERN_ERR
2663                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2664                 return -ENOMEM;
2665         }
2666
2667         /* Derive version string. */
2668         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2669         if (extended_error_logging)
2670                 strcat(qla2x00_version_str, "-debug");
2671
2672         qla2xxx_transport_template =
2673             fc_attach_transport(&qla2xxx_transport_functions);
2674         if (!qla2xxx_transport_template)
2675                 return -ENODEV;
2676
2677         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2678         ret = pci_register_driver(&qla2xxx_pci_driver);
2679         if (ret) {
2680                 kmem_cache_destroy(srb_cachep);
2681                 fc_release_transport(qla2xxx_transport_template);
2682         }
2683         return ret;
2684 }
2685
2686 /**
2687  * qla2x00_module_exit - Module cleanup.
2688  **/
2689 static void __exit
2690 qla2x00_module_exit(void)
2691 {
2692         pci_unregister_driver(&qla2xxx_pci_driver);
2693         qla2x00_release_firmware();
2694         kmem_cache_destroy(srb_cachep);
2695         fc_release_transport(qla2xxx_transport_template);
2696 }
2697
2698 module_init(qla2x00_module_init);
2699 module_exit(qla2x00_module_exit);
2700
2701 MODULE_AUTHOR("QLogic Corporation");
2702 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2703 MODULE_LICENSE("GPL");
2704 MODULE_VERSION(QLA2XXX_VERSION);