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

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2005 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/vmalloc.h>
  11 #include <linux/delay.h>
  12 #include <linux/kthread.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <scsi/scsi_transport.h>
  17 #include <scsi/scsi_transport_fc.h>
  18
  19 /*
  20  * Driver version
  21  */
  22 char qla2x00_version_str[40];
  23
  24 /*
  25  * SRB allocation cache
  26  */
  27 static struct kmem_cache *srb_cachep;
  28
  29 /*
  30  * Ioctl related information.
  31  */
  32 int num_hosts;
  33 int ql2xlogintimeout = 20;
  34 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  35 MODULE_PARM_DESC(ql2xlogintimeout,
  36                 "Login timeout value in seconds.");
  37
  38 int qlport_down_retry;
  39 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  40 MODULE_PARM_DESC(qlport_down_retry,
  41                 "Maximum number of command retries to a port that returns "
  42                 "a PORT-DOWN status.");
  43
  44 int ql2xplogiabsentdevice;
  45 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  46 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  47                 "Option to enable PLOGI to devices that are not present after "
  48                 "a Fabric scan.  This is needed for several broken switches. "
  49                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  50
  51 int ql2xloginretrycount = 0;
  52 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  53 MODULE_PARM_DESC(ql2xloginretrycount,
  54                 "Specify an alternate value for the NVRAM login retry count.");
  55
  56 int ql2xallocfwdump = 1;
  57 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  58 MODULE_PARM_DESC(ql2xallocfwdump,
  59                 "Option to enable allocation of memory for a firmware dump "
  60                 "during HBA initialization.  Memory allocation requirements "
  61                 "vary by ISP type.  Default is 1 - allocate memory.");
  62
  63 int ql2xextended_error_logging;
  64 module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
  65 MODULE_PARM_DESC(ql2xextended_error_logging,
  66                 "Option to enable extended error logging, "
  67                 "Default is 0 - no logging. 1 - log errors.");
  68
  69 static void qla2x00_free_device(scsi_qla_host_t *);
  70
  71 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  72
  73 int ql2xfdmienable;
  74 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  75 MODULE_PARM_DESC(ql2xfdmienable,
  76                 "Enables FDMI registratons "
  77                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  78
  79 #define MAX_Q_DEPTH    32
  80 static int ql2xmaxqdepth = MAX_Q_DEPTH;
  81 module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  82 MODULE_PARM_DESC(ql2xmaxqdepth,
  83                 "Maximum queue depth to report for target devices.");
  84
  85 int ql2xqfullrampup = 120;
  86 module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  87 MODULE_PARM_DESC(ql2xqfullrampup,
  88                 "Number of seconds to wait to begin to ramp-up the queue "
  89                 "depth for a device after a queue-full condition has been "
  90                 "detected.  Default is 120 seconds.");
  91
  92 /*
  93  * SCSI host template entry points
  94  */
  95 static int qla2xxx_slave_configure(struct scsi_device * device);
  96 static int qla2xxx_slave_alloc(struct scsi_device *);
  97 static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
  98 static void qla2xxx_scan_start(struct Scsi_Host *);
  99 static void qla2xxx_slave_destroy(struct scsi_device *);
 100 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 101                 void (*fn)(struct scsi_cmnd *));
 102 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 103                 void (*fn)(struct scsi_cmnd *));
 104 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 105 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 106 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 107 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 108 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
 109 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 110
 111 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 112 static int qla2x00_change_queue_type(struct scsi_device *, int);
 113
 114 struct scsi_host_template qla2x00_driver_template = {
 115         .module                 = THIS_MODULE,
 116         .name                   = QLA2XXX_DRIVER_NAME,
 117         .queuecommand           = qla2x00_queuecommand,
 118
 119         .eh_abort_handler       = qla2xxx_eh_abort,
 120         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 121         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 122         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 123
 124         .slave_configure        = qla2xxx_slave_configure,
 125
 126         .slave_alloc            = qla2xxx_slave_alloc,
 127         .slave_destroy          = qla2xxx_slave_destroy,
 128         .scan_finished          = qla2xxx_scan_finished,
 129         .scan_start             = qla2xxx_scan_start,
 130         .change_queue_depth     = qla2x00_change_queue_depth,
 131         .change_queue_type      = qla2x00_change_queue_type,
 132         .this_id                = -1,
 133         .cmd_per_lun            = 3,
 134         .use_clustering         = ENABLE_CLUSTERING,
 135         .sg_tablesize           = SG_ALL,
 136
 137         /*
 138          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 139          * which equates to 0x800000 sectors.
 140          */
 141         .max_sectors            = 0xFFFF,
 142         .shost_attrs            = qla2x00_host_attrs,
 143 };
 144
 145 struct scsi_host_template qla24xx_driver_template = {
 146         .module                 = THIS_MODULE,
 147         .name                   = QLA2XXX_DRIVER_NAME,
 148         .queuecommand           = qla24xx_queuecommand,
 149
 150         .eh_abort_handler       = qla2xxx_eh_abort,
 151         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 152         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 153         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 154
 155         .slave_configure        = qla2xxx_slave_configure,
 156
 157         .slave_alloc            = qla2xxx_slave_alloc,
 158         .slave_destroy          = qla2xxx_slave_destroy,
 159         .scan_finished          = qla2xxx_scan_finished,
 160         .scan_start             = qla2xxx_scan_start,
 161         .change_queue_depth     = qla2x00_change_queue_depth,
 162         .change_queue_type      = qla2x00_change_queue_type,
 163         .this_id                = -1,
 164         .cmd_per_lun            = 3,
 165         .use_clustering         = ENABLE_CLUSTERING,
 166         .sg_tablesize           = SG_ALL,
 167
 168         .max_sectors            = 0xFFFF,
 169         .shost_attrs            = qla2x00_host_attrs,
 170 };
 171
 172 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 173 struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
 174
 175 /* TODO Convert to inlines
 176  *
 177  * Timer routines
 178  */
 179
 180 void qla2x00_timer(scsi_qla_host_t *);
 181
 182 __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 183     void *, unsigned long);
 184 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 185 __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 186
 187 __inline__ void
 188 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 189 {
 190         init_timer(&ha->timer);
 191         ha->timer.expires = jiffies + interval * HZ;
 192         ha->timer.data = (unsigned long)ha;
 193         ha->timer.function = (void (*)(unsigned long))func;
 194         add_timer(&ha->timer);
 195         ha->timer_active = 1;
 196 }
 197
 198 static inline void
 199 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 200 {
 201         mod_timer(&ha->timer, jiffies + interval * HZ);
 202 }
 203
 204 __inline__ void
 205 qla2x00_stop_timer(scsi_qla_host_t *ha)
 206 {
 207         del_timer_sync(&ha->timer);
 208         ha->timer_active = 0;
 209 }
 210
 211 static int qla2x00_do_dpc(void *data);
 212
 213 static void qla2x00_rst_aen(scsi_qla_host_t *);
 214
 215 uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 216 void qla2x00_mem_free(scsi_qla_host_t *ha);
 217 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 218 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 219 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 220 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 221
 222 /* -------------------------------------------------------------------------- */
 223
 224 static char *
 225 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 226 {
 227         static char *pci_bus_modes[] = {
 228                 "33", "66", "100", "133",
 229         };
 230         uint16_t pci_bus;
 231
 232         strcpy(str, "PCI");
 233         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 234         if (pci_bus) {
 235                 strcat(str, "-X (");
 236                 strcat(str, pci_bus_modes[pci_bus]);
 237         } else {
 238                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 239                 strcat(str, " (");
 240                 strcat(str, pci_bus_modes[pci_bus]);
 241         }
 242         strcat(str, " MHz)");
 243
 244         return (str);
 245 }
 246
 247 static char *
 248 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 249 {
 250         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 251         uint32_t pci_bus;
 252         int pcie_reg;
 253
 254         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 255         if (pcie_reg) {
 256                 char lwstr[6];
 257                 uint16_t pcie_lstat, lspeed, lwidth;
 258
 259                 pcie_reg += 0x12;
 260                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 261                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 262                 lwidth = (pcie_lstat &
 263                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 264
 265                 strcpy(str, "PCIe (");
 266                 if (lspeed == 1)
 267                         strcat(str, "2.5Gb/s ");
 268                 else
 269                         strcat(str, "<unknown> ");
 270                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 271                 strcat(str, lwstr);
 272
 273                 return str;
 274         }
 275
 276         strcpy(str, "PCI");
 277         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 278         if (pci_bus == 0 || pci_bus == 8) {
 279                 strcat(str, " (");
 280                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 281         } else {
 282                 strcat(str, "-X ");
 283                 if (pci_bus & BIT_2)
 284                         strcat(str, "Mode 2");
 285                 else
 286                         strcat(str, "Mode 1");
 287                 strcat(str, " (");
 288                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 289         }
 290         strcat(str, " MHz)");
 291
 292         return str;
 293 }
 294
 295 static char *
 296 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 297 {
 298         char un_str[10];
 299
 300         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 301             ha->fw_minor_version,
 302             ha->fw_subminor_version);
 303
 304         if (ha->fw_attributes & BIT_9) {
 305                 strcat(str, "FLX");
 306                 return (str);
 307         }
 308
 309         switch (ha->fw_attributes & 0xFF) {
 310         case 0x7:
 311                 strcat(str, "EF");
 312                 break;
 313         case 0x17:
 314                 strcat(str, "TP");
 315                 break;
 316         case 0x37:
 317                 strcat(str, "IP");
 318                 break;
 319         case 0x77:
 320                 strcat(str, "VI");
 321                 break;
 322         default:
 323                 sprintf(un_str, "(%x)", ha->fw_attributes);
 324                 strcat(str, un_str);
 325                 break;
 326         }
 327         if (ha->fw_attributes & 0x100)
 328                 strcat(str, "X");
 329
 330         return (str);
 331 }
 332
 333 static char *
 334 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 335 {
 336         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 337             ha->fw_minor_version,
 338             ha->fw_subminor_version);
 339
 340         if (ha->fw_attributes & BIT_0)
 341                 strcat(str, "[Class 2] ");
 342         if (ha->fw_attributes & BIT_1)
 343                 strcat(str, "[IP] ");
 344         if (ha->fw_attributes & BIT_2)
 345                 strcat(str, "[Multi-ID] ");
 346         if (ha->fw_attributes & BIT_13)
 347                 strcat(str, "[Experimental]");
 348         return str;
 349 }
 350
 351 static inline srb_t *
 352 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 353     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 354 {
 355         srb_t *sp;
 356
 357         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 358         if (!sp)
 359                 return sp;
 360
 361         sp->ha = ha;
 362         sp->fcport = fcport;
 363         sp->cmd = cmd;
 364         sp->flags = 0;
 365         CMD_SP(cmd) = (void *)sp;
 366         cmd->scsi_done = done;
 367
 368         return sp;
 369 }
 370
 371 static int
 372 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 373 {
 374         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 375         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 376         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 377         srb_t *sp;
 378         int rval;
 379
 380         rval = fc_remote_port_chkready(rport);
 381         if (rval) {
 382                 cmd->result = rval;
 383                 goto qc_fail_command;
 384         }
 385
 386         /* Close window on fcport/rport state-transitioning. */
 387         if (!*(fc_port_t **)rport->dd_data) {
 388                 cmd->result = DID_IMM_RETRY << 16;
 389                 goto qc_fail_command;
 390         }
 391
 392         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 393                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 394                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 395                         cmd->result = DID_NO_CONNECT << 16;
 396                         goto qc_fail_command;
 397                 }
 398                 goto qc_host_busy;
 399         }
 400
 401         spin_unlock_irq(ha->host->host_lock);
 402
 403         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 404         if (!sp)
 405                 goto qc_host_busy_lock;
 406
 407         rval = qla2x00_start_scsi(sp);
 408         if (rval != QLA_SUCCESS)
 409                 goto qc_host_busy_free_sp;
 410
 411         spin_lock_irq(ha->host->host_lock);
 412
 413         return 0;
 414
 415 qc_host_busy_free_sp:
 416         qla2x00_sp_free_dma(ha, sp);
 417         mempool_free(sp, ha->srb_mempool);
 418
 419 qc_host_busy_lock:
 420         spin_lock_irq(ha->host->host_lock);
 421
 422 qc_host_busy:
 423         return SCSI_MLQUEUE_HOST_BUSY;
 424
 425 qc_fail_command:
 426         done(cmd);
 427
 428         return 0;
 429 }
 430
 431
 432 static int
 433 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 434 {
 435         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 436         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 437         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 438         srb_t *sp;
 439         int rval;
 440         scsi_qla_host_t *pha = to_qla_parent(ha);
 441
 442         rval = fc_remote_port_chkready(rport);
 443         if (rval) {
 444                 cmd->result = rval;
 445                 goto qc24_fail_command;
 446         }
 447
 448         /* Close window on fcport/rport state-transitioning. */
 449         if (!*(fc_port_t **)rport->dd_data) {
 450                 cmd->result = DID_IMM_RETRY << 16;
 451                 goto qc24_fail_command;
 452         }
 453
 454         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 455                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 456                     atomic_read(&pha->loop_state) == LOOP_DEAD) {
 457                         cmd->result = DID_NO_CONNECT << 16;
 458                         goto qc24_fail_command;
 459                 }
 460                 goto qc24_host_busy;
 461         }
 462
 463         spin_unlock_irq(ha->host->host_lock);
 464
 465         sp = qla2x00_get_new_sp(pha, fcport, cmd, done);
 466         if (!sp)
 467                 goto qc24_host_busy_lock;
 468
 469         rval = qla24xx_start_scsi(sp);
 470         if (rval != QLA_SUCCESS)
 471                 goto qc24_host_busy_free_sp;
 472
 473         spin_lock_irq(ha->host->host_lock);
 474
 475         return 0;
 476
 477 qc24_host_busy_free_sp:
 478         qla2x00_sp_free_dma(pha, sp);
 479         mempool_free(sp, pha->srb_mempool);
 480
 481 qc24_host_busy_lock:
 482         spin_lock_irq(ha->host->host_lock);
 483
 484 qc24_host_busy:
 485         return SCSI_MLQUEUE_HOST_BUSY;
 486
 487 qc24_fail_command:
 488         done(cmd);
 489
 490         return 0;
 491 }
 492
 493
 494 /*
 495  * qla2x00_eh_wait_on_command
 496  *    Waits for the command to be returned by the Firmware for some
 497  *    max time.
 498  *
 499  * Input:
 500  *    ha = actual ha whose done queue will contain the command
 501  *            returned by firmware.
 502  *    cmd = Scsi Command to wait on.
 503  *    flag = Abort/Reset(Bus or Device Reset)
 504  *
 505  * Return:
 506  *    Not Found : 0
 507  *    Found : 1
 508  */
 509 static int
 510 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
 511 {
 512 #define ABORT_POLLING_PERIOD    1000
 513 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 514         unsigned long wait_iter = ABORT_WAIT_ITER;
 515         int ret = QLA_SUCCESS;
 516
 517         while (CMD_SP(cmd)) {
 518                 msleep(ABORT_POLLING_PERIOD);
 519
 520                 if (--wait_iter)
 521                         break;
 522         }
 523         if (CMD_SP(cmd))
 524                 ret = QLA_FUNCTION_FAILED;
 525
 526         return ret;
 527 }
 528
 529 /*
 530  * qla2x00_wait_for_hba_online
 531  *    Wait till the HBA is online after going through
 532  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 533  *    finally HBA is disabled ie marked offline
 534  *
 535  * Input:
 536  *     ha - pointer to host adapter structure
 537  *
 538  * Note:
 539  *    Does context switching-Release SPIN_LOCK
 540  *    (if any) before calling this routine.
 541  *
 542  * Return:
 543  *    Success (Adapter is online) : 0
 544  *    Failed  (Adapter is offline/disabled) : 1
 545  */
 546 int
 547 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
 548 {
 549         int             return_status;
 550         unsigned long   wait_online;
 551         scsi_qla_host_t *pha = to_qla_parent(ha);
 552
 553         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 554         while (((test_bit(ISP_ABORT_NEEDED, &pha->dpc_flags)) ||
 555             test_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags) ||
 556             test_bit(ISP_ABORT_RETRY, &pha->dpc_flags) ||
 557             pha->dpc_active) && time_before(jiffies, wait_online)) {
 558
 559                 msleep(1000);
 560         }
 561         if (pha->flags.online)
 562                 return_status = QLA_SUCCESS;
 563         else
 564                 return_status = QLA_FUNCTION_FAILED;
 565
 566         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 567
 568         return (return_status);
 569 }
 570
 571 /*
 572  * qla2x00_wait_for_loop_ready
 573  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 574  *    to be in LOOP_READY state.
 575  * Input:
 576  *     ha - pointer to host adapter structure
 577  *
 578  * Note:
 579  *    Does context switching-Release SPIN_LOCK
 580  *    (if any) before calling this routine.
 581  *
 582  *
 583  * Return:
 584  *    Success (LOOP_READY) : 0
 585  *    Failed  (LOOP_NOT_READY) : 1
 586  */
 587 static inline int
 588 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 589 {
 590         int      return_status = QLA_SUCCESS;
 591         unsigned long loop_timeout ;
 592         scsi_qla_host_t *pha = to_qla_parent(ha);
 593
 594         /* wait for 5 min at the max for loop to be ready */
 595         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 596
 597         while ((!atomic_read(&pha->loop_down_timer) &&
 598             atomic_read(&pha->loop_state) == LOOP_DOWN) ||
 599             atomic_read(&pha->loop_state) != LOOP_READY) {
 600                 if (atomic_read(&pha->loop_state) == LOOP_DEAD) {
 601                         return_status = QLA_FUNCTION_FAILED;
 602                         break;
 603                 }
 604                 msleep(1000);
 605                 if (time_after_eq(jiffies, loop_timeout)) {
 606                         return_status = QLA_FUNCTION_FAILED;
 607                         break;
 608                 }
 609         }
 610         return (return_status);
 611 }
 612
 613 static void
 614 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 615 {
 616         struct Scsi_Host *shost = cmnd->device->host;
 617         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 618         unsigned long flags;
 619
 620         spin_lock_irqsave(shost->host_lock, flags);
 621         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 622                 spin_unlock_irqrestore(shost->host_lock, flags);
 623                 msleep(1000);
 624                 spin_lock_irqsave(shost->host_lock, flags);
 625         }
 626         spin_unlock_irqrestore(shost->host_lock, flags);
 627         return;
 628 }
 629
 630 /**************************************************************************
 631 * qla2xxx_eh_abort
 632 *
 633 * Description:
 634 *    The abort function will abort the specified command.
 635 *
 636 * Input:
 637 *    cmd = Linux SCSI command packet to be aborted.
 638 *
 639 * Returns:
 640 *    Either SUCCESS or FAILED.
 641 *
 642 * Note:
 643 *    Only return FAILED if command not returned by firmware.
 644 **************************************************************************/
 645 static int
 646 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 647 {
 648         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 649         srb_t *sp;
 650         int ret, i;
 651         unsigned int id, lun;
 652         unsigned long serial;
 653         unsigned long flags;
 654         int wait = 0;
 655         scsi_qla_host_t *pha = to_qla_parent(ha);
 656
 657         qla2x00_block_error_handler(cmd);
 658
 659         if (!CMD_SP(cmd))
 660                 return SUCCESS;
 661
 662         ret = SUCCESS;
 663
 664         id = cmd->device->id;
 665         lun = cmd->device->lun;
 666         serial = cmd->serial_number;
 667
 668         /* Check active list for command command. */
 669         spin_lock_irqsave(&pha->hardware_lock, flags);
 670         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 671                 sp = pha->outstanding_cmds[i];
 672
 673                 if (sp == NULL)
 674                         continue;
 675
 676                 if (sp->cmd != cmd)
 677                         continue;
 678
 679                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 680                     __func__, ha->host_no, sp, serial));
 681                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 682
 683                 spin_unlock_irqrestore(&pha->hardware_lock, flags);
 684                 if (ha->isp_ops.abort_command(ha, sp)) {
 685                         DEBUG2(printk("%s(%ld): abort_command "
 686                             "mbx failed.\n", __func__, ha->host_no));
 687                 } else {
 688                         DEBUG3(printk("%s(%ld): abort_command "
 689                             "mbx success.\n", __func__, ha->host_no));
 690                         wait = 1;
 691                 }
 692                 spin_lock_irqsave(&pha->hardware_lock, flags);
 693
 694                 break;
 695         }
 696         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 697
 698         /* Wait for the command to be returned. */
 699         if (wait) {
 700                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 701                         qla_printk(KERN_ERR, ha,
 702                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 703                             "%x.\n", ha->host_no, id, lun, serial, ret);
 704                         ret = FAILED;
 705                 }
 706         }
 707
 708         qla_printk(KERN_INFO, ha,
 709             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 710             ha->host_no, id, lun, wait, serial, ret);
 711
 712         return ret;
 713 }
 714
 715 /**************************************************************************
 716 * qla2x00_eh_wait_for_pending_target_commands
 717 *
 718 * Description:
 719 *    Waits for all the commands to come back from the specified target.
 720 *
 721 * Input:
 722 *    ha - pointer to scsi_qla_host structure.
 723 *    t  - target
 724 * Returns:
 725 *    Either SUCCESS or FAILED.
 726 *
 727 * Note:
 728 **************************************************************************/
 729 static int
 730 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 731 {
 732         int     cnt;
 733         int     status;
 734         srb_t           *sp;
 735         struct scsi_cmnd *cmd;
 736         unsigned long flags;
 737         scsi_qla_host_t *pha = to_qla_parent(ha);
 738
 739         status = 0;
 740
 741         /*
 742          * Waiting for all commands for the designated target in the active
 743          * array
 744          */
 745         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 746                 spin_lock_irqsave(&pha->hardware_lock, flags);
 747                 sp = pha->outstanding_cmds[cnt];
 748                 if (sp) {
 749                         cmd = sp->cmd;
 750                         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 751                         if (cmd->device->id == t &&
 752                             ha->vp_idx == sp->ha->vp_idx) {
 753                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 754                                         status = 1;
 755                                         break;
 756                                 }
 757                         }
 758                 } else {
 759                         spin_unlock_irqrestore(&pha->hardware_lock, flags);
 760                 }
 761         }
 762         return (status);
 763 }
 764
 765
 766 /**************************************************************************
 767 * qla2xxx_eh_device_reset
 768 *
 769 * Description:
 770 *    The device reset function will reset the target and abort any
 771 *    executing commands.
 772 *
 773 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 774 *          attempt to use this value, even if you determine it is
 775 *          non-null.
 776 *
 777 * Input:
 778 *    cmd = Linux SCSI command packet of the command that cause the
 779 *          bus device reset.
 780 *
 781 * Returns:
 782 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 783 *
 784 **************************************************************************/
 785 static int
 786 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 787 {
 788         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 789         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 790         int ret = FAILED;
 791         unsigned int id, lun;
 792         unsigned long serial;
 793
 794         qla2x00_block_error_handler(cmd);
 795
 796         id = cmd->device->id;
 797         lun = cmd->device->lun;
 798         serial = cmd->serial_number;
 799
 800         if (!fcport)
 801                 return ret;
 802
 803         qla_printk(KERN_INFO, ha,
 804             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 805
 806         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 807                 goto eh_dev_reset_done;
 808
 809         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 810                 if (qla2x00_device_reset(ha, fcport) == 0)
 811                         ret = SUCCESS;
 812
 813 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 814                 if (ret == SUCCESS) {
 815                         if (fcport->flags & FC_FABRIC_DEVICE) {
 816                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 817                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 818                         }
 819                 }
 820 #endif
 821         } else {
 822                 DEBUG2(printk(KERN_INFO
 823                     "%s failed: loop not ready\n",__func__));
 824         }
 825
 826         if (ret == FAILED) {
 827                 DEBUG3(printk("%s(%ld): device reset failed\n",
 828                     __func__, ha->host_no));
 829                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 830                     __func__);
 831
 832                 goto eh_dev_reset_done;
 833         }
 834
 835         /* Flush outstanding commands. */
 836         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 837                 ret = FAILED;
 838         if (ret == FAILED) {
 839                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 840                     __func__, ha->host_no));
 841                 qla_printk(KERN_INFO, ha,
 842                     "%s: failed while waiting for commands\n", __func__);
 843         } else
 844                 qla_printk(KERN_INFO, ha,
 845                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 846                     id, lun);
 847  eh_dev_reset_done:
 848         return ret;
 849 }
 850
 851 /**************************************************************************
 852 * qla2x00_eh_wait_for_pending_commands
 853 *
 854 * Description:
 855 *    Waits for all the commands to come back from the specified host.
 856 *
 857 * Input:
 858 *    ha - pointer to scsi_qla_host structure.
 859 *
 860 * Returns:
 861 *    1 : SUCCESS
 862 *    0 : FAILED
 863 *
 864 * Note:
 865 **************************************************************************/
 866 static int
 867 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 868 {
 869         int     cnt;
 870         int     status;
 871         srb_t           *sp;
 872         struct scsi_cmnd *cmd;
 873         unsigned long flags;
 874
 875         status = 1;
 876
 877         /*
 878          * Waiting for all commands for the designated target in the active
 879          * array
 880          */
 881         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 882                 spin_lock_irqsave(&ha->hardware_lock, flags);
 883                 sp = ha->outstanding_cmds[cnt];
 884                 if (sp) {
 885                         cmd = sp->cmd;
 886                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 887                         status = qla2x00_eh_wait_on_command(ha, cmd);
 888                         if (status == 0)
 889                                 break;
 890                 }
 891                 else {
 892                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 893                 }
 894         }
 895         return (status);
 896 }
 897
 898
 899 /**************************************************************************
 900 * qla2xxx_eh_bus_reset
 901 *
 902 * Description:
 903 *    The bus reset function will reset the bus and abort any executing
 904 *    commands.
 905 *
 906 * Input:
 907 *    cmd = Linux SCSI command packet of the command that cause the
 908 *          bus reset.
 909 *
 910 * Returns:
 911 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 912 *
 913 **************************************************************************/
 914 static int
 915 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 916 {
 917         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 918         scsi_qla_host_t *pha = to_qla_parent(ha);
 919         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 920         int ret = FAILED;
 921         unsigned int id, lun;
 922         unsigned long serial;
 923
 924         qla2x00_block_error_handler(cmd);
 925
 926         id = cmd->device->id;
 927         lun = cmd->device->lun;
 928         serial = cmd->serial_number;
 929
 930         if (!fcport)
 931                 return ret;
 932
 933         qla_printk(KERN_INFO, ha,
 934             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 935
 936         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 937                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 938                 goto eh_bus_reset_done;
 939         }
 940
 941         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 942                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 943                         ret = SUCCESS;
 944         }
 945         if (ret == FAILED)
 946                 goto eh_bus_reset_done;
 947
 948         /* Flush outstanding commands. */
 949         if (!qla2x00_eh_wait_for_pending_commands(pha))
 950                 ret = FAILED;
 951
 952 eh_bus_reset_done:
 953         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 954             (ret == FAILED) ? "failed" : "succeded");
 955
 956         return ret;
 957 }
 958
 959 /**************************************************************************
 960 * qla2xxx_eh_host_reset
 961 *
 962 * Description:
 963 *    The reset function will reset the Adapter.
 964 *
 965 * Input:
 966 *      cmd = Linux SCSI command packet of the command that cause the
 967 *            adapter reset.
 968 *
 969 * Returns:
 970 *      Either SUCCESS or FAILED.
 971 *
 972 * Note:
 973 **************************************************************************/
 974 static int
 975 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 976 {
 977         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 978         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 979         int ret = FAILED;
 980         unsigned int id, lun;
 981         unsigned long serial;
 982         scsi_qla_host_t *pha = to_qla_parent(ha);
 983
 984         qla2x00_block_error_handler(cmd);
 985
 986         id = cmd->device->id;
 987         lun = cmd->device->lun;
 988         serial = cmd->serial_number;
 989
 990         if (!fcport)
 991                 return ret;
 992
 993         qla_printk(KERN_INFO, ha,
 994             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 995
 996         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 997                 goto eh_host_reset_lock;
 998
 999         /*
1000          * Fixme-may be dpc thread is active and processing
1001          * loop_resync,so wait a while for it to
1002          * be completed and then issue big hammer.Otherwise
1003          * it may cause I/O failure as big hammer marks the
1004          * devices as lost kicking of the port_down_timer
1005          * while dpc is stuck for the mailbox to complete.
1006          */
1007         qla2x00_wait_for_loop_ready(ha);
1008         set_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1009         if (qla2x00_abort_isp(pha)) {
1010                 clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1011                 /* failed. schedule dpc to try */
1012                 set_bit(ISP_ABORT_NEEDED, &pha->dpc_flags);
1013
1014                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1015                         goto eh_host_reset_lock;
1016         }
1017         clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
1018
1019         /* Waiting for our command in done_queue to be returned to OS.*/
1020         if (qla2x00_eh_wait_for_pending_commands(pha))
1021                 ret = SUCCESS;
1022
1023         if (ha->parent)
1024                 qla2x00_vp_abort_isp(ha);
1025
1026 eh_host_reset_lock:
1027         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1028             (ret == FAILED) ? "failed" : "succeded");
1029
1030         return ret;
1031 }
1032
1033 /*
1034 * qla2x00_loop_reset
1035 *      Issue loop reset.
1036 *
1037 * Input:
1038 *      ha = adapter block pointer.
1039 *
1040 * Returns:
1041 *      0 = success
1042 */
1043 static int
1044 qla2x00_loop_reset(scsi_qla_host_t *ha)
1045 {
1046         int ret;
1047         struct fc_port *fcport;
1048
1049         if (ha->flags.enable_lip_full_login) {
1050                 ret = qla2x00_full_login_lip(ha);
1051                 if (ret != QLA_SUCCESS) {
1052                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1053                             "full_login_lip=%d.\n", __func__, ha->host_no,
1054                             ret));
1055                 }
1056                 atomic_set(&ha->loop_state, LOOP_DOWN);
1057                 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
1058                 qla2x00_mark_all_devices_lost(ha, 0);
1059                 qla2x00_wait_for_loop_ready(ha);
1060         }
1061
1062         if (ha->flags.enable_lip_reset) {
1063                 ret = qla2x00_lip_reset(ha);
1064                 if (ret != QLA_SUCCESS) {
1065                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1066                             "lip_reset=%d.\n", __func__, ha->host_no, ret));
1067                 }
1068                 qla2x00_wait_for_loop_ready(ha);
1069         }
1070
1071         if (ha->flags.enable_target_reset) {
1072                 list_for_each_entry(fcport, &ha->fcports, list) {
1073                         if (fcport->port_type != FCT_TARGET)
1074                                 continue;
1075
1076                         ret = qla2x00_device_reset(ha, fcport);
1077                         if (ret != QLA_SUCCESS) {
1078                                 DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1079                                     "target_reset=%d d_id=%x.\n", __func__,
1080                                     ha->host_no, ret, fcport->d_id.b24));
1081                         }
1082                 }
1083         }
1084
1085         /* Issue marker command only when we are going to start the I/O */
1086         ha->marker_needed = 1;
1087
1088         return QLA_SUCCESS;
1089 }
1090
1091 /*
1092  * qla2x00_device_reset
1093  *      Issue bus device reset message to the target.
1094  *
1095  * Input:
1096  *      ha = adapter block pointer.
1097  *      t = SCSI ID.
1098  *      TARGET_QUEUE_LOCK must be released.
1099  *      ADAPTER_STATE_LOCK must be released.
1100  *
1101  * Context:
1102  *      Kernel context.
1103  */
1104 static int
1105 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1106 {
1107         /* Abort Target command will clear Reservation */
1108         return ha->isp_ops.abort_target(reset_fcport);
1109 }
1110
1111 static int
1112 qla2xxx_slave_alloc(struct scsi_device *sdev)
1113 {
1114         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1115
1116         if (!rport || fc_remote_port_chkready(rport))
1117                 return -ENXIO;
1118
1119         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1120
1121         return 0;
1122 }
1123
1124 static int
1125 qla2xxx_slave_configure(struct scsi_device *sdev)
1126 {
1127         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1128         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1129
1130         if (sdev->tagged_supported)
1131                 scsi_activate_tcq(sdev, ha->max_q_depth);
1132         else
1133                 scsi_deactivate_tcq(sdev, ha->max_q_depth);
1134
1135         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1136
1137         return 0;
1138 }
1139
1140 static void
1141 qla2xxx_slave_destroy(struct scsi_device *sdev)
1142 {
1143         sdev->hostdata = NULL;
1144 }
1145
1146 static int
1147 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1148 {
1149         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1150         return sdev->queue_depth;
1151 }
1152
1153 static int
1154 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1155 {
1156         if (sdev->tagged_supported) {
1157                 scsi_set_tag_type(sdev, tag_type);
1158                 if (tag_type)
1159                         scsi_activate_tcq(sdev, sdev->queue_depth);
1160                 else
1161                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1162         } else
1163                 tag_type = 0;
1164
1165         return tag_type;
1166 }
1167
1168 /**
1169  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1170  * @ha: HA context
1171  *
1172  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1173  * supported addressing method.
1174  */
1175 static void
1176 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1177 {
1178         /* Assume a 32bit DMA mask. */
1179         ha->flags.enable_64bit_addressing = 0;
1180
1181         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1182                 /* Any upper-dword bits set? */
1183                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1184                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1185                         /* Ok, a 64bit DMA mask is applicable. */
1186                         ha->flags.enable_64bit_addressing = 1;
1187                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1188                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1189                         return;
1190                 }
1191         }
1192
1193         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1194         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1195 }
1196
1197 static inline void
1198 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1199 {
1200         ha->device_type = DT_EXTENDED_IDS;
1201         switch (ha->pdev->device) {
1202         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1203                 ha->device_type |= DT_ISP2100;
1204                 ha->device_type &= ~DT_EXTENDED_IDS;
1205                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1206                 break;
1207         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1208                 ha->device_type |= DT_ISP2200;
1209                 ha->device_type &= ~DT_EXTENDED_IDS;
1210                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1211                 break;
1212         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1213                 ha->device_type |= DT_ISP2300;
1214                 ha->device_type |= DT_ZIO_SUPPORTED;
1215                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1216                 break;
1217         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1218                 ha->device_type |= DT_ISP2312;
1219                 ha->device_type |= DT_ZIO_SUPPORTED;
1220                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1221                 break;
1222         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1223                 ha->device_type |= DT_ISP2322;
1224                 ha->device_type |= DT_ZIO_SUPPORTED;
1225                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1226                     ha->pdev->subsystem_device == 0x0170)
1227                         ha->device_type |= DT_OEM_001;
1228                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1229                 break;
1230         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1231                 ha->device_type |= DT_ISP6312;
1232                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1233                 break;
1234         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1235                 ha->device_type |= DT_ISP6322;
1236                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1237                 break;
1238         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1239                 ha->device_type |= DT_ISP2422;
1240                 ha->device_type |= DT_ZIO_SUPPORTED;
1241                 ha->device_type |= DT_FWI2;
1242                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1243                 break;
1244         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1245                 ha->device_type |= DT_ISP2432;
1246                 ha->device_type |= DT_ZIO_SUPPORTED;
1247                 ha->device_type |= DT_FWI2;
1248                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1249                 break;
1250         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1251                 ha->device_type |= DT_ISP5422;
1252                 ha->device_type |= DT_FWI2;
1253                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1254                 break;
1255         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1256                 ha->device_type |= DT_ISP5432;
1257                 ha->device_type |= DT_FWI2;
1258                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1259                 break;
1260         }
1261 }
1262
1263 static int
1264 qla2x00_iospace_config(scsi_qla_host_t *ha)
1265 {
1266         unsigned long   pio, pio_len, pio_flags;
1267         unsigned long   mmio, mmio_len, mmio_flags;
1268
1269         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1270         pio = pci_resource_start(ha->pdev, 0);
1271         pio_len = pci_resource_len(ha->pdev, 0);
1272         pio_flags = pci_resource_flags(ha->pdev, 0);
1273         if (pio_flags & IORESOURCE_IO) {
1274                 if (pio_len < MIN_IOBASE_LEN) {
1275                         qla_printk(KERN_WARNING, ha,
1276                             "Invalid PCI I/O region size (%s)...\n",
1277                                 pci_name(ha->pdev));
1278                         pio = 0;
1279                 }
1280         } else {
1281                 qla_printk(KERN_WARNING, ha,
1282                     "region #0 not a PIO resource (%s)...\n",
1283                     pci_name(ha->pdev));
1284                 pio = 0;
1285         }
1286
1287         /* Use MMIO operations for all accesses. */
1288         mmio = pci_resource_start(ha->pdev, 1);
1289         mmio_len = pci_resource_len(ha->pdev, 1);
1290         mmio_flags = pci_resource_flags(ha->pdev, 1);
1291
1292         if (!(mmio_flags & IORESOURCE_MEM)) {
1293                 qla_printk(KERN_ERR, ha,
1294                     "region #0 not an MMIO resource (%s), aborting\n",
1295                     pci_name(ha->pdev));
1296                 goto iospace_error_exit;
1297         }
1298         if (mmio_len < MIN_IOBASE_LEN) {
1299                 qla_printk(KERN_ERR, ha,
1300                     "Invalid PCI mem region size (%s), aborting\n",
1301                         pci_name(ha->pdev));
1302                 goto iospace_error_exit;
1303         }
1304
1305         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1306                 qla_printk(KERN_WARNING, ha,
1307                     "Failed to reserve PIO/MMIO regions (%s)\n",
1308                     pci_name(ha->pdev));
1309
1310                 goto iospace_error_exit;
1311         }
1312
1313         ha->pio_address = pio;
1314         ha->pio_length = pio_len;
1315         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1316         if (!ha->iobase) {
1317                 qla_printk(KERN_ERR, ha,
1318                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1319
1320                 goto iospace_error_exit;
1321         }
1322
1323         return (0);
1324
1325 iospace_error_exit:
1326         return (-ENOMEM);
1327 }
1328
1329 static void
1330 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1331 {
1332         unsigned long flags = 0;
1333         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1334
1335         spin_lock_irqsave(&ha->hardware_lock, flags);
1336         ha->interrupts_on = 1;
1337         /* enable risc and host interrupts */
1338         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1339         RD_REG_WORD(&reg->ictrl);
1340         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1341
1342 }
1343
1344 static void
1345 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1346 {
1347         unsigned long flags = 0;
1348         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1349
1350         spin_lock_irqsave(&ha->hardware_lock, flags);
1351         ha->interrupts_on = 0;
1352         /* disable risc and host interrupts */
1353         WRT_REG_WORD(&reg->ictrl, 0);
1354         RD_REG_WORD(&reg->ictrl);
1355         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1356 }
1357
1358 static void
1359 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1360 {
1361         unsigned long flags = 0;
1362         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1363
1364         spin_lock_irqsave(&ha->hardware_lock, flags);
1365         ha->interrupts_on = 1;
1366         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1367         RD_REG_DWORD(&reg->ictrl);
1368         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1369 }
1370
1371 static void
1372 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1373 {
1374         unsigned long flags = 0;
1375         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1376
1377         spin_lock_irqsave(&ha->hardware_lock, flags);
1378         ha->interrupts_on = 0;
1379         WRT_REG_DWORD(&reg->ictrl, 0);
1380         RD_REG_DWORD(&reg->ictrl);
1381         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1382 }
1383
1384 static void
1385 qla2xxx_scan_start(struct Scsi_Host *shost)
1386 {
1387         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1388
1389         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1390         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1391         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1392 }
1393
1394 static int
1395 qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
1396 {
1397         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1398
1399         if (!ha->host)
1400                 return 1;
1401         if (time > ha->loop_reset_delay * HZ)
1402                 return 1;
1403
1404         return atomic_read(&ha->loop_state) == LOOP_READY;
1405 }
1406
1407 /*
1408  * PCI driver interface
1409  */
1410 static int __devinit
1411 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1412 {
1413         int     ret = -ENODEV;
1414         device_reg_t __iomem *reg;
1415         struct Scsi_Host *host;
1416         scsi_qla_host_t *ha;
1417         unsigned long   flags = 0;
1418         char pci_info[20];
1419         char fw_str[30];
1420         struct scsi_host_template *sht;
1421
1422         if (pci_enable_device(pdev))
1423                 goto probe_out;
1424
1425         sht = &qla2x00_driver_template;
1426         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1427             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
1428             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
1429             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432)
1430                 sht = &qla24xx_driver_template;
1431         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1432         if (host == NULL) {
1433                 printk(KERN_WARNING
1434                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1435                 goto probe_disable_device;
1436         }
1437
1438         /* Clear our data area */
1439         ha = (scsi_qla_host_t *)host->hostdata;
1440         memset(ha, 0, sizeof(scsi_qla_host_t));
1441
1442         ha->pdev = pdev;
1443         ha->host = host;
1444         ha->host_no = host->host_no;
1445         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1446         ha->parent = NULL;
1447
1448         /* Set ISP-type information. */
1449         qla2x00_set_isp_flags(ha);
1450
1451         /* Configure PCI I/O space */
1452         ret = qla2x00_iospace_config(ha);
1453         if (ret)
1454                 goto probe_failed;
1455
1456         qla_printk(KERN_INFO, ha,
1457             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1458             ha->iobase);
1459
1460         spin_lock_init(&ha->hardware_lock);
1461
1462         ha->prev_topology = 0;
1463         ha->init_cb_size = sizeof(init_cb_t);
1464         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER + ha->vp_idx;
1465         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1466         ha->optrom_size = OPTROM_SIZE_2300;
1467
1468         ha->max_q_depth = MAX_Q_DEPTH;
1469         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1470                 ha->max_q_depth = ql2xmaxqdepth;
1471
1472         /* Assign ISP specific operations. */
1473         ha->isp_ops.pci_config          = qla2100_pci_config;
1474         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1475         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1476         ha->isp_ops.config_rings        = qla2x00_config_rings;
1477         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1478         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1479         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1480         ha->isp_ops.load_risc           = qla2x00_load_risc;
1481         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1482         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1483         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1484         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1485         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1486         ha->isp_ops.abort_command       = qla2x00_abort_command;
1487         ha->isp_ops.abort_target        = qla2x00_abort_target;
1488         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1489         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1490         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1491         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1492         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1493         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1494         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1495         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1496         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1497         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1498         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1499         ha->isp_ops.get_flash_version   = qla2x00_get_flash_version;
1500         if (IS_QLA2100(ha)) {
1501                 host->max_id = MAX_TARGETS_2100;
1502                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1503                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1504                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1505                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1506                 host->sg_tablesize = 32;
1507                 ha->gid_list_info_size = 4;
1508         } else if (IS_QLA2200(ha)) {
1509                 host->max_id = MAX_TARGETS_2200;
1510                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1511                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1512                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1513                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1514                 ha->gid_list_info_size = 4;
1515         } else if (IS_QLA23XX(ha)) {
1516                 host->max_id = MAX_TARGETS_2200;
1517                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1518                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1519                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1520                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1521                 ha->isp_ops.pci_config = qla2300_pci_config;
1522                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1523                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1524                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1525                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1526                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1527                 ha->gid_list_info_size = 6;
1528                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1529                         ha->optrom_size = OPTROM_SIZE_2322;
1530         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1531                 host->max_id = MAX_TARGETS_2200;
1532                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1533                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1534                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1535                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1536                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1537                 ha->mgmt_svr_loop_id = 10 + ha->vp_idx;
1538                 ha->isp_ops.pci_config = qla24xx_pci_config;
1539                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1540                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1541                 ha->isp_ops.config_rings = qla24xx_config_rings;
1542                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1543                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1544                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1545                 ha->isp_ops.load_risc = qla24xx_load_risc;
1546                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1547                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1548                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1549                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1550                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1551                 ha->isp_ops.abort_command = qla24xx_abort_command;
1552                 ha->isp_ops.abort_target = qla24xx_abort_target;
1553                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1554                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1555                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1556                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1557                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1558                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1559                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1560                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1561                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1562                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1563                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1564                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1565                 ha->isp_ops.get_flash_version = qla24xx_get_flash_version;
1566                 ha->gid_list_info_size = 8;
1567                 ha->optrom_size = OPTROM_SIZE_24XX;
1568         }
1569         host->can_queue = ha->request_q_length + 128;
1570
1571         /* load the F/W, read paramaters, and init the H/W */
1572         ha->instance = num_hosts;
1573
1574         init_MUTEX(&ha->mbx_cmd_sem);
1575         init_MUTEX(&ha->vport_sem);
1576         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1577
1578         INIT_LIST_HEAD(&ha->list);
1579         INIT_LIST_HEAD(&ha->fcports);
1580         INIT_LIST_HEAD(&ha->vp_list);
1581
1582         set_bit(0, (unsigned long *) ha->vp_idx_map);
1583
1584         qla2x00_config_dma_addressing(ha);
1585         if (qla2x00_mem_alloc(ha)) {
1586                 qla_printk(KERN_WARNING, ha,
1587                     "[ERROR] Failed to allocate memory for adapter\n");
1588
1589                 ret = -ENOMEM;
1590                 goto probe_failed;
1591         }
1592
1593         if (qla2x00_initialize_adapter(ha)) {
1594                 qla_printk(KERN_WARNING, ha,
1595                     "Failed to initialize adapter\n");
1596
1597                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1598                     "Adapter flags %x.\n",
1599                     ha->host_no, ha->device_flags));
1600
1601                 ret = -ENODEV;
1602                 goto probe_failed;
1603         }
1604
1605         /*
1606          * Startup the kernel thread for this host adapter
1607          */
1608         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1609                         "%s_dpc", ha->host_str);
1610         if (IS_ERR(ha->dpc_thread)) {
1611                 qla_printk(KERN_WARNING, ha,
1612                     "Unable to start DPC thread!\n");
1613                 ret = PTR_ERR(ha->dpc_thread);
1614                 goto probe_failed;
1615         }
1616
1617         host->this_id = 255;
1618         host->cmd_per_lun = 3;
1619         host->unique_id = ha->instance;
1620         host->max_cmd_len = MAX_CMDSZ;
1621         host->max_channel = MAX_BUSES - 1;
1622         host->max_lun = MAX_LUNS;
1623         host->transportt = qla2xxx_transport_template;
1624
1625         ret = qla2x00_request_irqs(ha);
1626         if (ret)
1627                 goto probe_failed;
1628
1629         /* Initialized the timer */
1630         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1631
1632         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1633             ha->host_no, ha));
1634
1635         ha->isp_ops.disable_intrs(ha);
1636
1637         spin_lock_irqsave(&ha->hardware_lock, flags);
1638         reg = ha->iobase;
1639         if (IS_FWI2_CAPABLE(ha)) {
1640                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1641                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1642         } else {
1643                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1644                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1645                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1646
1647                 /* Enable proper parity */
1648                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1649                         if (IS_QLA2300(ha))
1650                                 /* SRAM parity */
1651                                 WRT_REG_WORD(&reg->isp.hccr,
1652                                     (HCCR_ENABLE_PARITY + 0x1));
1653                         else
1654                                 /* SRAM, Instruction RAM and GP RAM parity */
1655                                 WRT_REG_WORD(&reg->isp.hccr,
1656                                     (HCCR_ENABLE_PARITY + 0x7));
1657                 }
1658         }
1659         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1660
1661         ha->isp_ops.enable_intrs(ha);
1662
1663         pci_set_drvdata(pdev, ha);
1664
1665         ha->flags.init_done = 1;
1666         ha->flags.online = 1;
1667
1668         num_hosts++;
1669
1670         ret = scsi_add_host(host, &pdev->dev);
1671         if (ret)
1672                 goto probe_failed;
1673
1674         scsi_scan_host(host);
1675
1676         qla2x00_alloc_sysfs_attr(ha);
1677
1678         qla2x00_init_host_attr(ha);
1679
1680         qla_printk(KERN_INFO, ha, "\n"
1681             " QLogic Fibre Channel HBA Driver: %s\n"
1682             "  QLogic %s - %s\n"
1683             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1684             qla2x00_version_str, ha->model_number,
1685             ha->model_desc ? ha->model_desc: "", pdev->device,
1686             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1687             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1688             ha->isp_ops.fw_version_str(ha, fw_str));
1689
1690         return 0;
1691
1692 probe_failed:
1693         qla2x00_free_device(ha);
1694
1695         scsi_host_put(host);
1696
1697 probe_disable_device:
1698         pci_disable_device(pdev);
1699
1700 probe_out:
1701         return ret;
1702 }
1703
1704 static void __devexit
1705 qla2x00_remove_one(struct pci_dev *pdev)
1706 {
1707         scsi_qla_host_t *ha;
1708
1709         ha = pci_get_drvdata(pdev);
1710
1711         qla2x00_free_sysfs_attr(ha);
1712
1713         fc_remove_host(ha->host);
1714
1715         scsi_remove_host(ha->host);
1716
1717         qla2x00_free_device(ha);
1718
1719         scsi_host_put(ha->host);
1720
1721         pci_disable_device(pdev);
1722         pci_set_drvdata(pdev, NULL);
1723 }
1724
1725 static void
1726 qla2x00_free_device(scsi_qla_host_t *ha)
1727 {
1728         /* Disable timer */
1729         if (ha->timer_active)
1730                 qla2x00_stop_timer(ha);
1731
1732         /* Kill the kernel thread for this host */
1733         if (ha->dpc_thread) {
1734                 struct task_struct *t = ha->dpc_thread;
1735
1736                 /*
1737                  * qla2xxx_wake_dpc checks for ->dpc_thread
1738                  * so we need to zero it out.
1739                  */
1740                 ha->dpc_thread = NULL;
1741                 kthread_stop(t);
1742         }
1743
1744         if (ha->eft)
1745                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1746
1747         ha->flags.online = 0;
1748
1749         /* Stop currently executing firmware. */
1750         qla2x00_try_to_stop_firmware(ha);
1751
1752         /* turn-off interrupts on the card */
1753         if (ha->interrupts_on)
1754                 ha->isp_ops.disable_intrs(ha);
1755
1756         qla2x00_mem_free(ha);
1757
1758         qla2x00_free_irqs(ha);
1759
1760         /* release io space registers  */
1761         if (ha->iobase)
1762                 iounmap(ha->iobase);
1763         pci_release_regions(ha->pdev);
1764 }
1765
1766 static inline void
1767 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1768     int defer)
1769 {
1770         unsigned long flags;
1771         struct fc_rport *rport;
1772
1773         if (!fcport->rport)
1774                 return;
1775
1776         rport = fcport->rport;
1777         if (defer) {
1778                 spin_lock_irqsave(&fcport->rport_lock, flags);
1779                 fcport->drport = rport;
1780                 fcport->rport = NULL;
1781                 *(fc_port_t **)rport->dd_data = NULL;
1782                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1783                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1784         } else {
1785                 spin_lock_irqsave(&fcport->rport_lock, flags);
1786                 fcport->rport = NULL;
1787                 *(fc_port_t **)rport->dd_data = NULL;
1788                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1789                 fc_remote_port_delete(rport);
1790         }
1791 }
1792
1793 /*
1794  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1795  *
1796  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1797  *
1798  * Return: None.
1799  *
1800  * Context:
1801  */
1802 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1803     int do_login, int defer)
1804 {
1805         if (atomic_read(&fcport->state) == FCS_ONLINE &&
1806             ha->vp_idx == fcport->vp_idx)
1807                 qla2x00_schedule_rport_del(ha, fcport, defer);
1808
1809         /*
1810          * We may need to retry the login, so don't change the state of the
1811          * port but do the retries.
1812          */
1813         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1814                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1815
1816         if (!do_login)
1817                 return;
1818
1819         if (fcport->login_retry == 0) {
1820                 fcport->login_retry = ha->login_retry_count;
1821                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1822
1823                 DEBUG(printk("scsi(%ld): Port login retry: "
1824                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1825                     "id = 0x%04x retry cnt=%d\n",
1826                     ha->host_no,
1827                     fcport->port_name[0],
1828                     fcport->port_name[1],
1829                     fcport->port_name[2],
1830                     fcport->port_name[3],
1831                     fcport->port_name[4],
1832                     fcport->port_name[5],
1833                     fcport->port_name[6],
1834                     fcport->port_name[7],
1835                     fcport->loop_id,
1836                     fcport->login_retry));
1837         }
1838 }
1839
1840 /*
1841  * qla2x00_mark_all_devices_lost
1842  *      Updates fcport state when device goes offline.
1843  *
1844  * Input:
1845  *      ha = adapter block pointer.
1846  *      fcport = port structure pointer.
1847  *
1848  * Return:
1849  *      None.
1850  *
1851  * Context:
1852  */
1853 void
1854 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1855 {
1856         fc_port_t *fcport;
1857         scsi_qla_host_t *pha = to_qla_parent(ha);
1858
1859         list_for_each_entry(fcport, &pha->fcports, list) {
1860                 if (ha->vp_idx != 0 && ha->vp_idx != fcport->vp_idx)
1861                         continue;
1862                 /*
1863                  * No point in marking the device as lost, if the device is
1864                  * already DEAD.
1865                  */
1866                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1867                         continue;
1868                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1869                         if (defer)
1870                                 qla2x00_schedule_rport_del(ha, fcport, defer);
1871                         else if (ha->vp_idx == fcport->vp_idx)
1872                                 qla2x00_schedule_rport_del(ha, fcport, defer);
1873                 }
1874                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1875         }
1876
1877         if (defer)
1878                 qla2xxx_wake_dpc(ha);
1879 }
1880
1881 /*
1882 * qla2x00_mem_alloc
1883 *      Allocates adapter memory.
1884 *
1885 * Returns:
1886 *      0  = success.
1887 *      1  = failure.
1888 */
1889 uint8_t
1890 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1891 {
1892         char    name[16];
1893         uint8_t   status = 1;
1894         int     retry= 10;
1895
1896         do {
1897                 /*
1898                  * This will loop only once if everything goes well, else some
1899                  * number of retries will be performed to get around a kernel
1900                  * bug where available mem is not allocated until after a
1901                  * little delay and a retry.
1902                  */
1903                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1904                     (ha->request_q_length + 1) * sizeof(request_t),
1905                     &ha->request_dma, GFP_KERNEL);
1906                 if (ha->request_ring == NULL) {
1907                         qla_printk(KERN_WARNING, ha,
1908                             "Memory Allocation failed - request_ring\n");
1909
1910                         qla2x00_mem_free(ha);
1911                         msleep(100);
1912
1913                         continue;
1914                 }
1915
1916                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1917                     (ha->response_q_length + 1) * sizeof(response_t),
1918                     &ha->response_dma, GFP_KERNEL);
1919                 if (ha->response_ring == NULL) {
1920                         qla_printk(KERN_WARNING, ha,
1921                             "Memory Allocation failed - response_ring\n");
1922
1923                         qla2x00_mem_free(ha);
1924                         msleep(100);
1925
1926                         continue;
1927                 }
1928
1929                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1930                     &ha->gid_list_dma, GFP_KERNEL);
1931                 if (ha->gid_list == NULL) {
1932                         qla_printk(KERN_WARNING, ha,
1933                             "Memory Allocation failed - gid_list\n");
1934
1935                         qla2x00_mem_free(ha);
1936                         msleep(100);
1937
1938                         continue;
1939                 }
1940
1941                 /* get consistent memory allocated for init control block */
1942                 ha->init_cb = dma_alloc_coherent(&ha->pdev->dev,
1943                     ha->init_cb_size, &ha->init_cb_dma, GFP_KERNEL);
1944                 if (ha->init_cb == NULL) {
1945                         qla_printk(KERN_WARNING, ha,
1946                             "Memory Allocation failed - init_cb\n");
1947
1948                         qla2x00_mem_free(ha);
1949                         msleep(100);
1950
1951                         continue;
1952                 }
1953                 memset(ha->init_cb, 0, ha->init_cb_size);
1954
1955                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1956                     ha->host_no);
1957                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1958                     DMA_POOL_SIZE, 8, 0);
1959                 if (ha->s_dma_pool == NULL) {
1960                         qla_printk(KERN_WARNING, ha,
1961                             "Memory Allocation failed - s_dma_pool\n");
1962
1963                         qla2x00_mem_free(ha);
1964                         msleep(100);
1965
1966                         continue;
1967                 }
1968
1969                 if (qla2x00_allocate_sp_pool(ha)) {
1970                         qla_printk(KERN_WARNING, ha,
1971                             "Memory Allocation failed - "
1972                             "qla2x00_allocate_sp_pool()\n");
1973
1974                         qla2x00_mem_free(ha);
1975                         msleep(100);
1976
1977                         continue;
1978                 }
1979
1980                 /* Allocate memory for SNS commands */
1981                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1982                         /* Get consistent memory allocated for SNS commands */
1983                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1984                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1985                             GFP_KERNEL);
1986                         if (ha->sns_cmd == NULL) {
1987                                 /* error */
1988                                 qla_printk(KERN_WARNING, ha,
1989                                     "Memory Allocation failed - sns_cmd\n");
1990
1991                                 qla2x00_mem_free(ha);
1992                                 msleep(100);
1993
1994                                 continue;
1995                         }
1996                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1997                 } else {
1998                         /* Get consistent memory allocated for MS IOCB */
1999                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2000                             &ha->ms_iocb_dma);
2001                         if (ha->ms_iocb == NULL) {
2002                                 /* error */
2003                                 qla_printk(KERN_WARNING, ha,
2004                                     "Memory Allocation failed - ms_iocb\n");
2005
2006                                 qla2x00_mem_free(ha);
2007                                 msleep(100);
2008
2009                                 continue;
2010                         }
2011                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
2012
2013                         /*
2014                          * Get consistent memory allocated for CT SNS
2015                          * commands
2016                          */
2017                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2018                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2019                             GFP_KERNEL);
2020                         if (ha->ct_sns == NULL) {
2021                                 /* error */
2022                                 qla_printk(KERN_WARNING, ha,
2023                                     "Memory Allocation failed - ct_sns\n");
2024
2025                                 qla2x00_mem_free(ha);
2026                                 msleep(100);
2027
2028                                 continue;
2029                         }
2030                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2031
2032                         if (IS_FWI2_CAPABLE(ha)) {
2033                                 /*
2034                                  * Get consistent memory allocated for SFP
2035                                  * block.
2036                                  */
2037                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2038                                     GFP_KERNEL, &ha->sfp_data_dma);
2039                                 if (ha->sfp_data == NULL) {
2040                                         qla_printk(KERN_WARNING, ha,
2041                                             "Memory Allocation failed - "
2042                                             "sfp_data\n");
2043
2044                                         qla2x00_mem_free(ha);
2045                                         msleep(100);
2046
2047                                         continue;
2048                                 }
2049                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2050                         }
2051                 }
2052
2053                 /* Done all allocations without any error. */
2054                 status = 0;
2055
2056         } while (retry-- && status != 0);
2057
2058         if (status) {
2059                 printk(KERN_WARNING
2060                         "%s(): **** FAILED ****\n", __func__);
2061         }
2062
2063         return(status);
2064 }
2065
2066 /*
2067 * qla2x00_mem_free
2068 *      Frees all adapter allocated memory.
2069 *
2070 * Input:
2071 *      ha = adapter block pointer.
2072 */
2073 void
2074 qla2x00_mem_free(scsi_qla_host_t *ha)
2075 {
2076         struct list_head        *fcpl, *fcptemp;
2077         fc_port_t       *fcport;
2078
2079         if (ha == NULL) {
2080                 /* error */
2081                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2082                 return;
2083         }
2084
2085         /* free sp pool */
2086         qla2x00_free_sp_pool(ha);
2087
2088         if (ha->fw_dump) {
2089                 if (ha->eft)
2090                         dma_free_coherent(&ha->pdev->dev,
2091                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2092                 vfree(ha->fw_dump);
2093         }
2094
2095         if (ha->sns_cmd)
2096                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2097                     ha->sns_cmd, ha->sns_cmd_dma);
2098
2099         if (ha->ct_sns)
2100                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2101                     ha->ct_sns, ha->ct_sns_dma);
2102
2103         if (ha->sfp_data)
2104                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2105
2106         if (ha->ms_iocb)
2107                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2108
2109         if (ha->s_dma_pool)
2110                 dma_pool_destroy(ha->s_dma_pool);
2111
2112         if (ha->init_cb)
2113                 dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
2114                     ha->init_cb, ha->init_cb_dma);
2115
2116         if (ha->gid_list)
2117                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2118                     ha->gid_list_dma);
2119
2120         if (ha->response_ring)
2121                 dma_free_coherent(&ha->pdev->dev,
2122                     (ha->response_q_length + 1) * sizeof(response_t),
2123                     ha->response_ring, ha->response_dma);
2124
2125         if (ha->request_ring)
2126                 dma_free_coherent(&ha->pdev->dev,
2127                     (ha->request_q_length + 1) * sizeof(request_t),
2128                     ha->request_ring, ha->request_dma);
2129
2130         ha->eft = NULL;
2131         ha->eft_dma = 0;
2132         ha->sns_cmd = NULL;
2133         ha->sns_cmd_dma = 0;
2134         ha->ct_sns = NULL;
2135         ha->ct_sns_dma = 0;
2136         ha->ms_iocb = NULL;
2137         ha->ms_iocb_dma = 0;
2138         ha->init_cb = NULL;
2139         ha->init_cb_dma = 0;
2140
2141         ha->s_dma_pool = NULL;
2142
2143         ha->gid_list = NULL;
2144         ha->gid_list_dma = 0;
2145
2146         ha->response_ring = NULL;
2147         ha->response_dma = 0;
2148         ha->request_ring = NULL;
2149         ha->request_dma = 0;
2150
2151         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2152                 fcport = list_entry(fcpl, fc_port_t, list);
2153
2154                 /* fc ports */
2155                 list_del_init(&fcport->list);
2156                 kfree(fcport);
2157         }
2158         INIT_LIST_HEAD(&ha->fcports);
2159
2160         ha->fw_dump = NULL;
2161         ha->fw_dumped = 0;
2162         ha->fw_dump_reading = 0;
2163
2164         vfree(ha->optrom_buffer);
2165 }
2166
2167 /*
2168  * qla2x00_allocate_sp_pool
2169  *       This routine is called during initialization to allocate
2170  *       memory for local srb_t.
2171  *
2172  * Input:
2173  *       ha   = adapter block pointer.
2174  *
2175  * Context:
2176  *      Kernel context.
2177  */
2178 static int
2179 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2180 {
2181         int      rval;
2182
2183         rval = QLA_SUCCESS;
2184         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2185         if (ha->srb_mempool == NULL) {
2186                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2187                 rval = QLA_FUNCTION_FAILED;
2188         }
2189         return (rval);
2190 }
2191
2192 /*
2193  *  This routine frees all adapter allocated memory.
2194  *
2195  */
2196 static void
2197 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2198 {
2199         if (ha->srb_mempool) {
2200                 mempool_destroy(ha->srb_mempool);
2201                 ha->srb_mempool = NULL;
2202         }
2203 }
2204
2205 /**************************************************************************
2206 * qla2x00_do_dpc
2207 *   This kernel thread is a task that is schedule by the interrupt handler
2208 *   to perform the background processing for interrupts.
2209 *
2210 * Notes:
2211 * This task always run in the context of a kernel thread.  It
2212 * is kick-off by the driver's detect code and starts up
2213 * up one per adapter. It immediately goes to sleep and waits for
2214 * some fibre event.  When either the interrupt handler or
2215 * the timer routine detects a event it will one of the task
2216 * bits then wake us up.
2217 **************************************************************************/
2218 static int
2219 qla2x00_do_dpc(void *data)
2220 {
2221         int             rval;
2222         scsi_qla_host_t *ha;
2223         fc_port_t       *fcport;
2224         uint8_t         status;
2225         uint16_t        next_loopid;
2226
2227         ha = (scsi_qla_host_t *)data;
2228
2229         set_user_nice(current, -20);
2230
2231         while (!kthread_should_stop()) {
2232                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2233
2234                 set_current_state(TASK_INTERRUPTIBLE);
2235                 schedule();
2236                 __set_current_state(TASK_RUNNING);
2237
2238                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2239
2240                 /* Initialization not yet finished. Don't do anything yet. */
2241                 if (!ha->flags.init_done)
2242                         continue;
2243
2244                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2245
2246                 ha->dpc_active = 1;
2247
2248                 if (ha->flags.mbox_busy) {
2249                         ha->dpc_active = 0;
2250                         continue;
2251                 }
2252
2253                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2254
2255                         DEBUG(printk("scsi(%ld): dpc: sched "
2256                             "qla2x00_abort_isp ha = %p\n",
2257                             ha->host_no, ha));
2258                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2259                             &ha->dpc_flags))) {
2260
2261                                 if (qla2x00_abort_isp(ha)) {
2262                                         /* failed. retry later */
2263                                         set_bit(ISP_ABORT_NEEDED,
2264                                             &ha->dpc_flags);
2265                                 }
2266                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2267                         }
2268                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2269                             ha->host_no));
2270                 }
2271
2272                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2273                         qla2x00_update_fcports(ha);
2274
2275                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2276                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2277                             ha->host_no));
2278                         qla2x00_loop_reset(ha);
2279                 }
2280
2281                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2282                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2283
2284                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2285                             ha->host_no));
2286
2287                         qla2x00_rst_aen(ha);
2288                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2289                 }
2290
2291                 /* Retry each device up to login retry count */
2292                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2293                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2294                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2295
2296                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2297                             ha->host_no));
2298
2299                         next_loopid = 0;
2300                         list_for_each_entry(fcport, &ha->fcports, list) {
2301                                 /*
2302                                  * If the port is not ONLINE then try to login
2303                                  * to it if we haven't run out of retries.
2304                                  */
2305                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2306                                     fcport->login_retry) {
2307
2308                                         fcport->login_retry--;
2309                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2310                                                 if (fcport->flags &
2311                                                     FCF_TAPE_PRESENT)
2312                                                         ha->isp_ops.fabric_logout(
2313                                                             ha, fcport->loop_id,
2314                                                             fcport->d_id.b.domain,
2315                                                             fcport->d_id.b.area,
2316                                                             fcport->d_id.b.al_pa);
2317                                                 status = qla2x00_fabric_login(
2318                                                     ha, fcport, &next_loopid);
2319                                         } else
2320                                                 status =
2321                                                     qla2x00_local_device_login(
2322                                                         ha, fcport);
2323
2324                                         if (status == QLA_SUCCESS) {
2325                                                 fcport->old_loop_id = fcport->loop_id;
2326
2327                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2328                                                     ha->host_no, fcport->loop_id));
2329
2330                                                 qla2x00_update_fcport(ha,
2331                                                     fcport);
2332                                         } else if (status == 1) {
2333                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2334                                                 /* retry the login again */
2335                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2336                                                     ha->host_no,
2337                                                     fcport->login_retry, fcport->loop_id));
2338                                         } else {
2339                                                 fcport->login_retry = 0;
2340                                         }
2341                                 }
2342                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2343                                         break;
2344                         }
2345                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2346                             ha->host_no));
2347                 }
2348
2349                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2350                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2351
2352                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2353                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2354                             ha->host_no));
2355
2356                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2357
2358                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2359                             ha->host_no));
2360                 }
2361
2362                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2363
2364                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2365                             ha->host_no));
2366
2367                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2368                             &ha->dpc_flags))) {
2369
2370                                 rval = qla2x00_loop_resync(ha);
2371
2372                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2373                         }
2374
2375                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2376                             ha->host_no));
2377                 }
2378
2379                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2380
2381                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2382                             ha->host_no));
2383
2384                         qla2x00_rescan_fcports(ha);
2385
2386                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2387                             "end.\n",
2388                             ha->host_no));
2389                 }
2390
2391                 if (!ha->interrupts_on)
2392                         ha->isp_ops.enable_intrs(ha);
2393
2394                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2395                         ha->isp_ops.beacon_blink(ha);
2396
2397                 qla2x00_do_dpc_all_vps(ha);
2398
2399                 ha->dpc_active = 0;
2400         } /* End of while(1) */
2401
2402         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2403
2404         /*
2405          * Make sure that nobody tries to wake us up again.
2406          */
2407         ha->dpc_active = 0;
2408
2409         return 0;
2410 }
2411
2412 void
2413 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2414 {
2415         if (ha->dpc_thread)
2416                 wake_up_process(ha->dpc_thread);
2417 }
2418
2419 /*
2420 *  qla2x00_rst_aen
2421 *      Processes asynchronous reset.
2422 *
2423 * Input:
2424 *      ha  = adapter block pointer.
2425 */
2426 static void
2427 qla2x00_rst_aen(scsi_qla_host_t *ha)
2428 {
2429         if (ha->flags.online && !ha->flags.reset_active &&
2430             !atomic_read(&ha->loop_down_timer) &&
2431             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2432                 do {
2433                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2434
2435                         /*
2436                          * Issue marker command only when we are going to start
2437                          * the I/O.
2438                          */
2439                         ha->marker_needed = 1;
2440                 } while (!atomic_read(&ha->loop_down_timer) &&
2441                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2442         }
2443 }
2444
2445 static void
2446 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2447 {
2448         struct scsi_cmnd *cmd = sp->cmd;
2449
2450         if (sp->flags & SRB_DMA_VALID) {
2451                 scsi_dma_unmap(cmd);
2452                 sp->flags &= ~SRB_DMA_VALID;
2453         }
2454         CMD_SP(cmd) = NULL;
2455 }
2456
2457 void
2458 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2459 {
2460         struct scsi_cmnd *cmd = sp->cmd;
2461
2462         qla2x00_sp_free_dma(ha, sp);
2463
2464         mempool_free(sp, ha->srb_mempool);
2465
2466         cmd->scsi_done(cmd);
2467 }
2468
2469 /**************************************************************************
2470 *   qla2x00_timer
2471 *
2472 * Description:
2473 *   One second timer
2474 *
2475 * Context: Interrupt
2476 ***************************************************************************/
2477 void
2478 qla2x00_timer(scsi_qla_host_t *ha)
2479 {
2480         unsigned long   cpu_flags = 0;
2481         fc_port_t       *fcport;
2482         int             start_dpc = 0;
2483         int             index;
2484         srb_t           *sp;
2485         int             t;
2486         scsi_qla_host_t *pha = to_qla_parent(ha);
2487
2488         /*
2489          * Ports - Port down timer.
2490          *
2491          * Whenever, a port is in the LOST state we start decrementing its port
2492          * down timer every second until it reaches zero. Once  it reaches zero
2493          * the port it marked DEAD.
2494          */
2495         t = 0;
2496         list_for_each_entry(fcport, &ha->fcports, list) {
2497                 if (fcport->port_type != FCT_TARGET)
2498                         continue;
2499
2500                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2501
2502                         if (atomic_read(&fcport->port_down_timer) == 0)
2503                                 continue;
2504
2505                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2506                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2507
2508                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2509                             "%d remaining\n",
2510                             ha->host_no,
2511                             t, atomic_read(&fcport->port_down_timer)));
2512                 }
2513                 t++;
2514         } /* End of for fcport  */
2515
2516
2517         /* Loop down handler. */
2518         if (atomic_read(&ha->loop_down_timer) > 0 &&
2519             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2520
2521                 if (atomic_read(&ha->loop_down_timer) ==
2522                     ha->loop_down_abort_time) {
2523
2524                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2525                             "queues before time expire\n",
2526                             ha->host_no));
2527
2528                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2529                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2530
2531                         /* Schedule an ISP abort to return any tape commands. */
2532                         /* NPIV - scan physical port only */
2533                         if (!ha->parent) {
2534                                 spin_lock_irqsave(&ha->hardware_lock,
2535                                     cpu_flags);
2536                                 for (index = 1;
2537                                     index < MAX_OUTSTANDING_COMMANDS;
2538                                     index++) {
2539                                         fc_port_t *sfcp;
2540
2541                                         sp = ha->outstanding_cmds[index];
2542                                         if (!sp)
2543                                                 continue;
2544                                         sfcp = sp->fcport;
2545                                         if (!(sfcp->flags & FCF_TAPE_PRESENT))
2546                                                 continue;
2547
2548                                         set_bit(ISP_ABORT_NEEDED,
2549                                             &ha->dpc_flags);
2550                                         break;
2551                                 }
2552                                 spin_unlock_irqrestore(&ha->hardware_lock,
2553                                     cpu_flags);
2554                         }
2555                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2556                         start_dpc++;
2557                 }
2558
2559                 /* if the loop has been down for 4 minutes, reinit adapter */
2560                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2561                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2562                             "restarting queues.\n",
2563                             ha->host_no));
2564
2565                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2566                         start_dpc++;
2567
2568                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2569                                 DEBUG(printk("scsi(%ld): Loop down - "
2570                                     "aborting ISP.\n",
2571                                     ha->host_no));
2572                                 qla_printk(KERN_WARNING, ha,
2573                                     "Loop down - aborting ISP.\n");
2574
2575                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2576                         }
2577                 }
2578                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2579                     ha->host_no,
2580                     atomic_read(&ha->loop_down_timer)));
2581         }
2582
2583         /* Check if beacon LED needs to be blinked */
2584         if (ha->beacon_blink_led == 1) {
2585                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2586                 start_dpc++;
2587         }
2588
2589         /* Schedule the DPC routine if needed */
2590         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2591             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2592             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2593             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2594             start_dpc ||
2595             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2596             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2597             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2598             test_bit(VP_DPC_NEEDED, &ha->dpc_flags) ||
2599             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2600                 qla2xxx_wake_dpc(pha);
2601
2602         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2603 }
2604
2605 /* XXX(hch): crude hack to emulate a down_timeout() */
2606 int
2607 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2608 {
2609         const unsigned int step = 100; /* msecs */
2610         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2611
2612         do {
2613                 if (!down_trylock(sema))
2614                         return 0;
2615                 if (msleep_interruptible(step))
2616                         break;
2617         } while (--iterations > 0);
2618
2619         return -ETIMEDOUT;
2620 }
2621
2622 /* Firmware interface routines. */
2623
2624 #define FW_BLOBS        5
2625 #define FW_ISP21XX      0
2626 #define FW_ISP22XX      1
2627 #define FW_ISP2300      2
2628 #define FW_ISP2322      3
2629 #define FW_ISP24XX      4
2630
2631 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2632 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2633 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2634 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2635 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2636
2637 static DECLARE_MUTEX(qla_fw_lock);
2638
2639 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2640         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2641         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2642         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2643         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2644         { .name = FW_FILE_ISP24XX, },
2645 };
2646
2647 struct fw_blob *
2648 qla2x00_request_firmware(scsi_qla_host_t *ha)
2649 {
2650         struct fw_blob *blob;
2651
2652         blob = NULL;
2653         if (IS_QLA2100(ha)) {
2654                 blob = &qla_fw_blobs[FW_ISP21XX];
2655         } else if (IS_QLA2200(ha)) {
2656                 blob = &qla_fw_blobs[FW_ISP22XX];
2657         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2658                 blob = &qla_fw_blobs[FW_ISP2300];
2659         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2660                 blob = &qla_fw_blobs[FW_ISP2322];
2661         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2662                 blob = &qla_fw_blobs[FW_ISP24XX];
2663         }
2664
2665         down(&qla_fw_lock);
2666         if (blob->fw)
2667                 goto out;
2668
2669         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2670                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2671                     "(%s).\n", ha->host_no, blob->name));
2672                 blob->fw = NULL;
2673                 blob = NULL;
2674                 goto out;
2675         }
2676
2677 out:
2678         up(&qla_fw_lock);
2679         return blob;
2680 }
2681
2682 static void
2683 qla2x00_release_firmware(void)
2684 {
2685         int idx;
2686
2687         down(&qla_fw_lock);
2688         for (idx = 0; idx < FW_BLOBS; idx++)
2689                 if (qla_fw_blobs[idx].fw)
2690                         release_firmware(qla_fw_blobs[idx].fw);
2691         up(&qla_fw_lock);
2692 }
2693
2694 static struct pci_device_id qla2xxx_pci_tbl[] = {
2695         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2696         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2697         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2698         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2699         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2700         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2701         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2702         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2703         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2704         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2705         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2706         { 0 },
2707 };
2708 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2709
2710 static struct pci_driver qla2xxx_pci_driver = {
2711         .name           = QLA2XXX_DRIVER_NAME,
2712         .driver         = {
2713                 .owner          = THIS_MODULE,
2714         },
2715         .id_table       = qla2xxx_pci_tbl,
2716         .probe          = qla2x00_probe_one,
2717         .remove         = __devexit_p(qla2x00_remove_one),
2718 };
2719
2720 /**
2721  * qla2x00_module_init - Module initialization.
2722  **/
2723 static int __init
2724 qla2x00_module_init(void)
2725 {
2726         int ret = 0;
2727
2728         /* Allocate cache for SRBs. */
2729         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2730             SLAB_HWCACHE_ALIGN, NULL, NULL);
2731         if (srb_cachep == NULL) {
2732                 printk(KERN_ERR
2733                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2734                 return -ENOMEM;
2735         }
2736
2737         /* Derive version string. */
2738         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2739         if (ql2xextended_error_logging)
2740                 strcat(qla2x00_version_str, "-debug");
2741
2742         qla2xxx_transport_template =
2743             fc_attach_transport(&qla2xxx_transport_functions);
2744         if (!qla2xxx_transport_template) {
2745                 kmem_cache_destroy(srb_cachep);
2746                 return -ENODEV;
2747         }
2748         qla2xxx_transport_vport_template =
2749             fc_attach_transport(&qla2xxx_transport_vport_functions);
2750         if (!qla2xxx_transport_vport_template) {
2751                 kmem_cache_destroy(srb_cachep);
2752                 fc_release_transport(qla2xxx_transport_template);
2753                 return -ENODEV;
2754         }
2755
2756         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2757         ret = pci_register_driver(&qla2xxx_pci_driver);
2758         if (ret) {
2759                 kmem_cache_destroy(srb_cachep);
2760                 fc_release_transport(qla2xxx_transport_template);
2761                 fc_release_transport(qla2xxx_transport_vport_template);
2762         }
2763         return ret;
2764 }
2765
2766 /**
2767  * qla2x00_module_exit - Module cleanup.
2768  **/
2769 static void __exit
2770 qla2x00_module_exit(void)
2771 {
2772         pci_unregister_driver(&qla2xxx_pci_driver);
2773         qla2x00_release_firmware();
2774         kmem_cache_destroy(srb_cachep);
2775         fc_release_transport(qla2xxx_transport_template);
2776         fc_release_transport(qla2xxx_transport_vport_template);
2777 }
2778
2779 module_init(qla2x00_module_init);
2780 module_exit(qla2x00_module_exit);
2781
2782 MODULE_AUTHOR("QLogic Corporation");
2783 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2784 MODULE_LICENSE("GPL");
2785 MODULE_VERSION(QLA2XXX_VERSION);
2786 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2787 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2788 MODULE_FIRMWARE(FW_FILE_ISP2300);
2789 MODULE_FIRMWARE(FW_FILE_ISP2322);
2790 MODULE_FIRMWARE(FW_FILE_ISP24XX);