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 static int num_hosts;
  33
  34 int ql2xlogintimeout = 20;
  35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  36 MODULE_PARM_DESC(ql2xlogintimeout,
  37                 "Login timeout value in seconds.");
  38
  39 int qlport_down_retry;
  40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  41 MODULE_PARM_DESC(qlport_down_retry,
  42                 "Maximum number of command retries to a port that returns "
  43                 "a PORT-DOWN status.");
  44
  45 int ql2xplogiabsentdevice;
  46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  48                 "Option to enable PLOGI to devices that are not present after "
  49                 "a Fabric scan.  This is needed for several broken switches. "
  50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  51
  52 int ql2xloginretrycount = 0;
  53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  54 MODULE_PARM_DESC(ql2xloginretrycount,
  55                 "Specify an alternate value for the NVRAM login retry count.");
  56
  57 int ql2xallocfwdump = 1;
  58 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  59 MODULE_PARM_DESC(ql2xallocfwdump,
  60                 "Option to enable allocation of memory for a firmware dump "
  61                 "during HBA initialization.  Memory allocation requirements "
  62                 "vary by ISP type.  Default is 1 - allocate memory.");
  63
  64 int ql2xextended_error_logging;
  65 module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
  66 MODULE_PARM_DESC(ql2xextended_error_logging,
  67                 "Option to enable extended error logging, "
  68                 "Default is 0 - no logging. 1 - log errors.");
  69
  70 static void qla2x00_free_device(scsi_qla_host_t *);
  71
  72 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  73
  74 int ql2xfdmienable;
  75 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  76 MODULE_PARM_DESC(ql2xfdmienable,
  77                 "Enables FDMI registratons "
  78                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  79
  80 #define MAX_Q_DEPTH    32
  81 static int ql2xmaxqdepth = MAX_Q_DEPTH;
  82 module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  83 MODULE_PARM_DESC(ql2xmaxqdepth,
  84                 "Maximum queue depth to report for target devices.");
  85
  86 int ql2xqfullrampup = 120;
  87 module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  88 MODULE_PARM_DESC(ql2xqfullrampup,
  89                 "Number of seconds to wait to begin to ramp-up the queue "
  90                 "depth for a device after a queue-full condition has been "
  91                 "detected.  Default is 120 seconds.");
  92
  93 /*
  94  * SCSI host template entry points
  95  */
  96 static int qla2xxx_slave_configure(struct scsi_device * device);
  97 static int qla2xxx_slave_alloc(struct scsi_device *);
  98 static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
  99 static void qla2xxx_scan_start(struct Scsi_Host *);
 100 static void qla2xxx_slave_destroy(struct scsi_device *);
 101 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 102                 void (*fn)(struct scsi_cmnd *));
 103 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 104                 void (*fn)(struct scsi_cmnd *));
 105 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 106 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 107 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 108 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 109 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
 110 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 111
 112 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 113 static int qla2x00_change_queue_type(struct scsi_device *, int);
 114
 115 static struct scsi_host_template qla2x00_driver_template = {
 116         .module                 = THIS_MODULE,
 117         .name                   = QLA2XXX_DRIVER_NAME,
 118         .queuecommand           = qla2x00_queuecommand,
 119
 120         .eh_abort_handler       = qla2xxx_eh_abort,
 121         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 122         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 123         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 124
 125         .slave_configure        = qla2xxx_slave_configure,
 126
 127         .slave_alloc            = qla2xxx_slave_alloc,
 128         .slave_destroy          = qla2xxx_slave_destroy,
 129         .scan_finished          = qla2xxx_scan_finished,
 130         .scan_start             = qla2xxx_scan_start,
 131         .change_queue_depth     = qla2x00_change_queue_depth,
 132         .change_queue_type      = qla2x00_change_queue_type,
 133         .this_id                = -1,
 134         .cmd_per_lun            = 3,
 135         .use_clustering         = ENABLE_CLUSTERING,
 136         .sg_tablesize           = SG_ALL,
 137
 138         /*
 139          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 140          * which equates to 0x800000 sectors.
 141          */
 142         .max_sectors            = 0xFFFF,
 143         .shost_attrs            = qla2x00_host_attrs,
 144 };
 145
 146 static struct scsi_host_template qla24xx_driver_template = {
 147         .module                 = THIS_MODULE,
 148         .name                   = QLA2XXX_DRIVER_NAME,
 149         .queuecommand           = qla24xx_queuecommand,
 150
 151         .eh_abort_handler       = qla2xxx_eh_abort,
 152         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 153         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 154         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 155
 156         .slave_configure        = qla2xxx_slave_configure,
 157
 158         .slave_alloc            = qla2xxx_slave_alloc,
 159         .slave_destroy          = qla2xxx_slave_destroy,
 160         .scan_finished          = qla2xxx_scan_finished,
 161         .scan_start             = qla2xxx_scan_start,
 162         .change_queue_depth     = qla2x00_change_queue_depth,
 163         .change_queue_type      = qla2x00_change_queue_type,
 164         .this_id                = -1,
 165         .cmd_per_lun            = 3,
 166         .use_clustering         = ENABLE_CLUSTERING,
 167         .sg_tablesize           = SG_ALL,
 168
 169         .max_sectors            = 0xFFFF,
 170         .shost_attrs            = qla2x00_host_attrs,
 171 };
 172
 173 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 174
 175 /* TODO Convert to inlines
 176  *
 177  * Timer routines
 178  */
 179 #define WATCH_INTERVAL          1       /* number of seconds */
 180
 181 static void qla2x00_timer(scsi_qla_host_t *);
 182
 183 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
 184     void *, unsigned long);
 185 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
 186 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
 187
 188 static inline void
 189 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 190 {
 191         init_timer(&ha->timer);
 192         ha->timer.expires = jiffies + interval * HZ;
 193         ha->timer.data = (unsigned long)ha;
 194         ha->timer.function = (void (*)(unsigned long))func;
 195         add_timer(&ha->timer);
 196         ha->timer_active = 1;
 197 }
 198
 199 static inline void
 200 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
 201 {
 202         mod_timer(&ha->timer, jiffies + interval * HZ);
 203 }
 204
 205 static __inline__ void
 206 qla2x00_stop_timer(scsi_qla_host_t *ha)
 207 {
 208         del_timer_sync(&ha->timer);
 209         ha->timer_active = 0;
 210 }
 211
 212 static int qla2x00_do_dpc(void *data);
 213
 214 static void qla2x00_rst_aen(scsi_qla_host_t *);
 215
 216 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 217 static void qla2x00_mem_free(scsi_qla_host_t *ha);
 218 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 219 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 220 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 221 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 222
 223 /* -------------------------------------------------------------------------- */
 224
 225 static char *
 226 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
 227 {
 228         static char *pci_bus_modes[] = {
 229                 "33", "66", "100", "133",
 230         };
 231         uint16_t pci_bus;
 232
 233         strcpy(str, "PCI");
 234         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 235         if (pci_bus) {
 236                 strcat(str, "-X (");
 237                 strcat(str, pci_bus_modes[pci_bus]);
 238         } else {
 239                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 240                 strcat(str, " (");
 241                 strcat(str, pci_bus_modes[pci_bus]);
 242         }
 243         strcat(str, " MHz)");
 244
 245         return (str);
 246 }
 247
 248 static char *
 249 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
 250 {
 251         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 252         uint32_t pci_bus;
 253         int pcie_reg;
 254
 255         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 256         if (pcie_reg) {
 257                 char lwstr[6];
 258                 uint16_t pcie_lstat, lspeed, lwidth;
 259
 260                 pcie_reg += 0x12;
 261                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 262                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 263                 lwidth = (pcie_lstat &
 264                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 265
 266                 strcpy(str, "PCIe (");
 267                 if (lspeed == 1)
 268                         strcat(str, "2.5Gb/s ");
 269                 else
 270                         strcat(str, "<unknown> ");
 271                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 272                 strcat(str, lwstr);
 273
 274                 return str;
 275         }
 276
 277         strcpy(str, "PCI");
 278         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 279         if (pci_bus == 0 || pci_bus == 8) {
 280                 strcat(str, " (");
 281                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 282         } else {
 283                 strcat(str, "-X ");
 284                 if (pci_bus & BIT_2)
 285                         strcat(str, "Mode 2");
 286                 else
 287                         strcat(str, "Mode 1");
 288                 strcat(str, " (");
 289                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 290         }
 291         strcat(str, " MHz)");
 292
 293         return str;
 294 }
 295
 296 static char *
 297 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
 298 {
 299         char un_str[10];
 300
 301         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 302             ha->fw_minor_version,
 303             ha->fw_subminor_version);
 304
 305         if (ha->fw_attributes & BIT_9) {
 306                 strcat(str, "FLX");
 307                 return (str);
 308         }
 309
 310         switch (ha->fw_attributes & 0xFF) {
 311         case 0x7:
 312                 strcat(str, "EF");
 313                 break;
 314         case 0x17:
 315                 strcat(str, "TP");
 316                 break;
 317         case 0x37:
 318                 strcat(str, "IP");
 319                 break;
 320         case 0x77:
 321                 strcat(str, "VI");
 322                 break;
 323         default:
 324                 sprintf(un_str, "(%x)", ha->fw_attributes);
 325                 strcat(str, un_str);
 326                 break;
 327         }
 328         if (ha->fw_attributes & 0x100)
 329                 strcat(str, "X");
 330
 331         return (str);
 332 }
 333
 334 static char *
 335 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
 336 {
 337         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 338             ha->fw_minor_version,
 339             ha->fw_subminor_version);
 340
 341         if (ha->fw_attributes & BIT_0)
 342                 strcat(str, "[Class 2] ");
 343         if (ha->fw_attributes & BIT_1)
 344                 strcat(str, "[IP] ");
 345         if (ha->fw_attributes & BIT_2)
 346                 strcat(str, "[Multi-ID] ");
 347         if (ha->fw_attributes & BIT_13)
 348                 strcat(str, "[Experimental]");
 349         return str;
 350 }
 351
 352 static inline srb_t *
 353 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
 354     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 355 {
 356         srb_t *sp;
 357
 358         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 359         if (!sp)
 360                 return sp;
 361
 362         sp->ha = ha;
 363         sp->fcport = fcport;
 364         sp->cmd = cmd;
 365         sp->flags = 0;
 366         CMD_SP(cmd) = (void *)sp;
 367         cmd->scsi_done = done;
 368
 369         return sp;
 370 }
 371
 372 static int
 373 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 374 {
 375         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 376         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 377         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 378         srb_t *sp;
 379         int rval;
 380
 381         rval = fc_remote_port_chkready(rport);
 382         if (rval) {
 383                 cmd->result = rval;
 384                 goto qc_fail_command;
 385         }
 386
 387         /* Close window on fcport/rport state-transitioning. */
 388         if (!*(fc_port_t **)rport->dd_data) {
 389                 cmd->result = DID_IMM_RETRY << 16;
 390                 goto qc_fail_command;
 391         }
 392
 393         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 394                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 395                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
 396                         cmd->result = DID_NO_CONNECT << 16;
 397                         goto qc_fail_command;
 398                 }
 399                 goto qc_host_busy;
 400         }
 401
 402         spin_unlock_irq(ha->host->host_lock);
 403
 404         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
 405         if (!sp)
 406                 goto qc_host_busy_lock;
 407
 408         rval = qla2x00_start_scsi(sp);
 409         if (rval != QLA_SUCCESS)
 410                 goto qc_host_busy_free_sp;
 411
 412         spin_lock_irq(ha->host->host_lock);
 413
 414         return 0;
 415
 416 qc_host_busy_free_sp:
 417         qla2x00_sp_free_dma(ha, sp);
 418         mempool_free(sp, ha->srb_mempool);
 419
 420 qc_host_busy_lock:
 421         spin_lock_irq(ha->host->host_lock);
 422
 423 qc_host_busy:
 424         return SCSI_MLQUEUE_HOST_BUSY;
 425
 426 qc_fail_command:
 427         done(cmd);
 428
 429         return 0;
 430 }
 431
 432
 433 static int
 434 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 435 {
 436         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 437         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 438         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 439         srb_t *sp;
 440         int rval;
 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(&ha->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(ha, 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(ha, sp);
 479         mempool_free(sp, ha->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
 552         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 553         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
 554             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 555             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
 556             ha->dpc_active) && time_before(jiffies, wait_online)) {
 557
 558                 msleep(1000);
 559         }
 560         if (ha->flags.online)
 561                 return_status = QLA_SUCCESS;
 562         else
 563                 return_status = QLA_FUNCTION_FAILED;
 564
 565         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
 566
 567         return (return_status);
 568 }
 569
 570 /*
 571  * qla2x00_wait_for_loop_ready
 572  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 573  *    to be in LOOP_READY state.
 574  * Input:
 575  *     ha - pointer to host adapter structure
 576  *
 577  * Note:
 578  *    Does context switching-Release SPIN_LOCK
 579  *    (if any) before calling this routine.
 580  *
 581  *
 582  * Return:
 583  *    Success (LOOP_READY) : 0
 584  *    Failed  (LOOP_NOT_READY) : 1
 585  */
 586 static inline int
 587 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
 588 {
 589         int      return_status = QLA_SUCCESS;
 590         unsigned long loop_timeout ;
 591
 592         /* wait for 5 min at the max for loop to be ready */
 593         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 594
 595         while ((!atomic_read(&ha->loop_down_timer) &&
 596             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
 597             atomic_read(&ha->loop_state) != LOOP_READY) {
 598                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
 599                         return_status = QLA_FUNCTION_FAILED;
 600                         break;
 601                 }
 602                 msleep(1000);
 603                 if (time_after_eq(jiffies, loop_timeout)) {
 604                         return_status = QLA_FUNCTION_FAILED;
 605                         break;
 606                 }
 607         }
 608         return (return_status);
 609 }
 610
 611 static void
 612 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 613 {
 614         struct Scsi_Host *shost = cmnd->device->host;
 615         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 616         unsigned long flags;
 617
 618         spin_lock_irqsave(shost->host_lock, flags);
 619         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 620                 spin_unlock_irqrestore(shost->host_lock, flags);
 621                 msleep(1000);
 622                 spin_lock_irqsave(shost->host_lock, flags);
 623         }
 624         spin_unlock_irqrestore(shost->host_lock, flags);
 625         return;
 626 }
 627
 628 /**************************************************************************
 629 * qla2xxx_eh_abort
 630 *
 631 * Description:
 632 *    The abort function will abort the specified command.
 633 *
 634 * Input:
 635 *    cmd = Linux SCSI command packet to be aborted.
 636 *
 637 * Returns:
 638 *    Either SUCCESS or FAILED.
 639 *
 640 * Note:
 641 *    Only return FAILED if command not returned by firmware.
 642 **************************************************************************/
 643 static int
 644 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 645 {
 646         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 647         srb_t *sp;
 648         int ret, i;
 649         unsigned int id, lun;
 650         unsigned long serial;
 651         unsigned long flags;
 652         int wait = 0;
 653
 654         qla2x00_block_error_handler(cmd);
 655
 656         if (!CMD_SP(cmd))
 657                 return SUCCESS;
 658
 659         ret = SUCCESS;
 660
 661         id = cmd->device->id;
 662         lun = cmd->device->lun;
 663         serial = cmd->serial_number;
 664
 665         /* Check active list for command command. */
 666         spin_lock_irqsave(&ha->hardware_lock, flags);
 667         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 668                 sp = ha->outstanding_cmds[i];
 669
 670                 if (sp == NULL)
 671                         continue;
 672
 673                 if (sp->cmd != cmd)
 674                         continue;
 675
 676                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
 677                     __func__, ha->host_no, sp, serial));
 678                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
 679
 680                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 681                 if (ha->isp_ops.abort_command(ha, sp)) {
 682                         DEBUG2(printk("%s(%ld): abort_command "
 683                             "mbx failed.\n", __func__, ha->host_no));
 684                 } else {
 685                         DEBUG3(printk("%s(%ld): abort_command "
 686                             "mbx success.\n", __func__, ha->host_no));
 687                         wait = 1;
 688                 }
 689                 spin_lock_irqsave(&ha->hardware_lock, flags);
 690
 691                 break;
 692         }
 693         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 694
 695         /* Wait for the command to be returned. */
 696         if (wait) {
 697                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
 698                         qla_printk(KERN_ERR, ha,
 699                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 700                             "%x.\n", ha->host_no, id, lun, serial, ret);
 701                         ret = FAILED;
 702                 }
 703         }
 704
 705         qla_printk(KERN_INFO, ha,
 706             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 707             ha->host_no, id, lun, wait, serial, ret);
 708
 709         return ret;
 710 }
 711
 712 /**************************************************************************
 713 * qla2x00_eh_wait_for_pending_target_commands
 714 *
 715 * Description:
 716 *    Waits for all the commands to come back from the specified target.
 717 *
 718 * Input:
 719 *    ha - pointer to scsi_qla_host structure.
 720 *    t  - target
 721 * Returns:
 722 *    Either SUCCESS or FAILED.
 723 *
 724 * Note:
 725 **************************************************************************/
 726 static int
 727 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
 728 {
 729         int     cnt;
 730         int     status;
 731         srb_t           *sp;
 732         struct scsi_cmnd *cmd;
 733         unsigned long flags;
 734
 735         status = 0;
 736
 737         /*
 738          * Waiting for all commands for the designated target in the active
 739          * array
 740          */
 741         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 742                 spin_lock_irqsave(&ha->hardware_lock, flags);
 743                 sp = ha->outstanding_cmds[cnt];
 744                 if (sp) {
 745                         cmd = sp->cmd;
 746                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 747                         if (cmd->device->id == t) {
 748                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
 749                                         status = 1;
 750                                         break;
 751                                 }
 752                         }
 753                 } else {
 754                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 755                 }
 756         }
 757         return (status);
 758 }
 759
 760
 761 /**************************************************************************
 762 * qla2xxx_eh_device_reset
 763 *
 764 * Description:
 765 *    The device reset function will reset the target and abort any
 766 *    executing commands.
 767 *
 768 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
 769 *          attempt to use this value, even if you determine it is
 770 *          non-null.
 771 *
 772 * Input:
 773 *    cmd = Linux SCSI command packet of the command that cause the
 774 *          bus device reset.
 775 *
 776 * Returns:
 777 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 778 *
 779 **************************************************************************/
 780 static int
 781 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 782 {
 783         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 784         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 785         int ret;
 786         unsigned int id, lun;
 787         unsigned long serial;
 788
 789         qla2x00_block_error_handler(cmd);
 790
 791         ret = FAILED;
 792
 793         id = cmd->device->id;
 794         lun = cmd->device->lun;
 795         serial = cmd->serial_number;
 796
 797         if (!fcport)
 798                 return ret;
 799
 800         qla_printk(KERN_INFO, ha,
 801             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
 802
 803         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 804                 goto eh_dev_reset_done;
 805
 806         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 807                 if (qla2x00_device_reset(ha, fcport) == 0)
 808                         ret = SUCCESS;
 809
 810 #if defined(LOGOUT_AFTER_DEVICE_RESET)
 811                 if (ret == SUCCESS) {
 812                         if (fcport->flags & FC_FABRIC_DEVICE) {
 813                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
 814                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
 815                         }
 816                 }
 817 #endif
 818         } else {
 819                 DEBUG2(printk(KERN_INFO
 820                     "%s failed: loop not ready\n",__func__));
 821         }
 822
 823         if (ret == FAILED) {
 824                 DEBUG3(printk("%s(%ld): device reset failed\n",
 825                     __func__, ha->host_no));
 826                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
 827                     __func__);
 828
 829                 goto eh_dev_reset_done;
 830         }
 831
 832         /* Flush outstanding commands. */
 833         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
 834                 ret = FAILED;
 835         if (ret == FAILED) {
 836                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
 837                     __func__, ha->host_no));
 838                 qla_printk(KERN_INFO, ha,
 839                     "%s: failed while waiting for commands\n", __func__);
 840         } else
 841                 qla_printk(KERN_INFO, ha,
 842                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
 843                     id, lun);
 844  eh_dev_reset_done:
 845         return ret;
 846 }
 847
 848 /**************************************************************************
 849 * qla2x00_eh_wait_for_pending_commands
 850 *
 851 * Description:
 852 *    Waits for all the commands to come back from the specified host.
 853 *
 854 * Input:
 855 *    ha - pointer to scsi_qla_host structure.
 856 *
 857 * Returns:
 858 *    1 : SUCCESS
 859 *    0 : FAILED
 860 *
 861 * Note:
 862 **************************************************************************/
 863 static int
 864 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
 865 {
 866         int     cnt;
 867         int     status;
 868         srb_t           *sp;
 869         struct scsi_cmnd *cmd;
 870         unsigned long flags;
 871
 872         status = 1;
 873
 874         /*
 875          * Waiting for all commands for the designated target in the active
 876          * array
 877          */
 878         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 879                 spin_lock_irqsave(&ha->hardware_lock, flags);
 880                 sp = ha->outstanding_cmds[cnt];
 881                 if (sp) {
 882                         cmd = sp->cmd;
 883                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 884                         status = qla2x00_eh_wait_on_command(ha, cmd);
 885                         if (status == 0)
 886                                 break;
 887                 }
 888                 else {
 889                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 890                 }
 891         }
 892         return (status);
 893 }
 894
 895
 896 /**************************************************************************
 897 * qla2xxx_eh_bus_reset
 898 *
 899 * Description:
 900 *    The bus reset function will reset the bus and abort any executing
 901 *    commands.
 902 *
 903 * Input:
 904 *    cmd = Linux SCSI command packet of the command that cause the
 905 *          bus reset.
 906 *
 907 * Returns:
 908 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 909 *
 910 **************************************************************************/
 911 static int
 912 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 913 {
 914         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 915         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 916         int ret;
 917         unsigned int id, lun;
 918         unsigned long serial;
 919
 920         qla2x00_block_error_handler(cmd);
 921
 922         ret = FAILED;
 923
 924         id = cmd->device->id;
 925         lun = cmd->device->lun;
 926         serial = cmd->serial_number;
 927
 928         if (!fcport)
 929                 return ret;
 930
 931         qla_printk(KERN_INFO, ha,
 932             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
 933
 934         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
 935                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 936                 goto eh_bus_reset_done;
 937         }
 938
 939         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
 940                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
 941                         ret = SUCCESS;
 942         }
 943         if (ret == FAILED)
 944                 goto eh_bus_reset_done;
 945
 946         /* Flush outstanding commands. */
 947         if (!qla2x00_eh_wait_for_pending_commands(ha))
 948                 ret = FAILED;
 949
 950 eh_bus_reset_done:
 951         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
 952             (ret == FAILED) ? "failed" : "succeded");
 953
 954         return ret;
 955 }
 956
 957 /**************************************************************************
 958 * qla2xxx_eh_host_reset
 959 *
 960 * Description:
 961 *    The reset function will reset the Adapter.
 962 *
 963 * Input:
 964 *      cmd = Linux SCSI command packet of the command that cause the
 965 *            adapter reset.
 966 *
 967 * Returns:
 968 *      Either SUCCESS or FAILED.
 969 *
 970 * Note:
 971 **************************************************************************/
 972 static int
 973 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 974 {
 975         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
 976         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 977         int ret;
 978         unsigned int id, lun;
 979         unsigned long serial;
 980
 981         qla2x00_block_error_handler(cmd);
 982
 983         ret = FAILED;
 984
 985         id = cmd->device->id;
 986         lun = cmd->device->lun;
 987         serial = cmd->serial_number;
 988
 989         if (!fcport)
 990                 return ret;
 991
 992         qla_printk(KERN_INFO, ha,
 993             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
 994
 995         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
 996                 goto eh_host_reset_lock;
 997
 998         /*
 999          * Fixme-may be dpc thread is active and processing
1000          * loop_resync,so wait a while for it to
1001          * be completed and then issue big hammer.Otherwise
1002          * it may cause I/O failure as big hammer marks the
1003          * devices as lost kicking of the port_down_timer
1004          * while dpc is stuck for the mailbox to complete.
1005          */
1006         qla2x00_wait_for_loop_ready(ha);
1007         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1008         if (qla2x00_abort_isp(ha)) {
1009                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1010                 /* failed. schedule dpc to try */
1011                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1012
1013                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1014                         goto eh_host_reset_lock;
1015         }
1016         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1017
1018         /* Waiting for our command in done_queue to be returned to OS.*/
1019         if (qla2x00_eh_wait_for_pending_commands(ha))
1020                 ret = SUCCESS;
1021
1022 eh_host_reset_lock:
1023         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1024             (ret == FAILED) ? "failed" : "succeded");
1025
1026         return ret;
1027 }
1028
1029 /*
1030 * qla2x00_loop_reset
1031 *      Issue loop reset.
1032 *
1033 * Input:
1034 *      ha = adapter block pointer.
1035 *
1036 * Returns:
1037 *      0 = success
1038 */
1039 static int
1040 qla2x00_loop_reset(scsi_qla_host_t *ha)
1041 {
1042         int ret;
1043         struct fc_port *fcport;
1044
1045         if (ha->flags.enable_lip_full_login) {
1046                 ret = qla2x00_full_login_lip(ha);
1047                 if (ret != QLA_SUCCESS) {
1048                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1049                             "full_login_lip=%d.\n", __func__, ha->host_no,
1050                             ret));
1051                 }
1052                 atomic_set(&ha->loop_state, LOOP_DOWN);
1053                 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
1054                 qla2x00_mark_all_devices_lost(ha, 0);
1055                 qla2x00_wait_for_loop_ready(ha);
1056         }
1057
1058         if (ha->flags.enable_lip_reset) {
1059                 ret = qla2x00_lip_reset(ha);
1060                 if (ret != QLA_SUCCESS) {
1061                         DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1062                             "lip_reset=%d.\n", __func__, ha->host_no, ret));
1063                 }
1064                 qla2x00_wait_for_loop_ready(ha);
1065         }
1066
1067         if (ha->flags.enable_target_reset) {
1068                 list_for_each_entry(fcport, &ha->fcports, list) {
1069                         if (fcport->port_type != FCT_TARGET)
1070                                 continue;
1071
1072                         ret = qla2x00_device_reset(ha, fcport);
1073                         if (ret != QLA_SUCCESS) {
1074                                 DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1075                                     "target_reset=%d d_id=%x.\n", __func__,
1076                                     ha->host_no, ret, fcport->d_id.b24));
1077                         }
1078                 }
1079         }
1080
1081         /* Issue marker command only when we are going to start the I/O */
1082         ha->marker_needed = 1;
1083
1084         return QLA_SUCCESS;
1085 }
1086
1087 /*
1088  * qla2x00_device_reset
1089  *      Issue bus device reset message to the target.
1090  *
1091  * Input:
1092  *      ha = adapter block pointer.
1093  *      t = SCSI ID.
1094  *      TARGET_QUEUE_LOCK must be released.
1095  *      ADAPTER_STATE_LOCK must be released.
1096  *
1097  * Context:
1098  *      Kernel context.
1099  */
1100 static int
1101 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1102 {
1103         /* Abort Target command will clear Reservation */
1104         return ha->isp_ops.abort_target(reset_fcport);
1105 }
1106
1107 static int
1108 qla2xxx_slave_alloc(struct scsi_device *sdev)
1109 {
1110         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1111
1112         if (!rport || fc_remote_port_chkready(rport))
1113                 return -ENXIO;
1114
1115         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1116
1117         return 0;
1118 }
1119
1120 static int
1121 qla2xxx_slave_configure(struct scsi_device *sdev)
1122 {
1123         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1124         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1125
1126         if (sdev->tagged_supported)
1127                 scsi_activate_tcq(sdev, ha->max_q_depth);
1128         else
1129                 scsi_deactivate_tcq(sdev, ha->max_q_depth);
1130
1131         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1132
1133         return 0;
1134 }
1135
1136 static void
1137 qla2xxx_slave_destroy(struct scsi_device *sdev)
1138 {
1139         sdev->hostdata = NULL;
1140 }
1141
1142 static int
1143 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1144 {
1145         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1146         return sdev->queue_depth;
1147 }
1148
1149 static int
1150 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1151 {
1152         if (sdev->tagged_supported) {
1153                 scsi_set_tag_type(sdev, tag_type);
1154                 if (tag_type)
1155                         scsi_activate_tcq(sdev, sdev->queue_depth);
1156                 else
1157                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1158         } else
1159                 tag_type = 0;
1160
1161         return tag_type;
1162 }
1163
1164 /**
1165  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1166  * @ha: HA context
1167  *
1168  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1169  * supported addressing method.
1170  */
1171 static void
1172 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1173 {
1174         /* Assume a 32bit DMA mask. */
1175         ha->flags.enable_64bit_addressing = 0;
1176
1177         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1178                 /* Any upper-dword bits set? */
1179                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1180                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1181                         /* Ok, a 64bit DMA mask is applicable. */
1182                         ha->flags.enable_64bit_addressing = 1;
1183                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1184                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1185                         return;
1186                 }
1187         }
1188
1189         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1190         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1191 }
1192
1193 static inline void
1194 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1195 {
1196         ha->device_type = DT_EXTENDED_IDS;
1197         switch (ha->pdev->device) {
1198         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1199                 ha->device_type |= DT_ISP2100;
1200                 ha->device_type &= ~DT_EXTENDED_IDS;
1201                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1202                 break;
1203         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1204                 ha->device_type |= DT_ISP2200;
1205                 ha->device_type &= ~DT_EXTENDED_IDS;
1206                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1207                 break;
1208         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1209                 ha->device_type |= DT_ISP2300;
1210                 ha->device_type |= DT_ZIO_SUPPORTED;
1211                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1212                 break;
1213         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1214                 ha->device_type |= DT_ISP2312;
1215                 ha->device_type |= DT_ZIO_SUPPORTED;
1216                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1217                 break;
1218         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1219                 ha->device_type |= DT_ISP2322;
1220                 ha->device_type |= DT_ZIO_SUPPORTED;
1221                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1222                     ha->pdev->subsystem_device == 0x0170)
1223                         ha->device_type |= DT_OEM_001;
1224                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1225                 break;
1226         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1227                 ha->device_type |= DT_ISP6312;
1228                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1229                 break;
1230         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1231                 ha->device_type |= DT_ISP6322;
1232                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1233                 break;
1234         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1235                 ha->device_type |= DT_ISP2422;
1236                 ha->device_type |= DT_ZIO_SUPPORTED;
1237                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1238                 break;
1239         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1240                 ha->device_type |= DT_ISP2432;
1241                 ha->device_type |= DT_ZIO_SUPPORTED;
1242                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1243                 break;
1244         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1245                 ha->device_type |= DT_ISP5422;
1246                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1247                 break;
1248         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1249                 ha->device_type |= DT_ISP5432;
1250                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1251                 break;
1252         }
1253 }
1254
1255 static int
1256 qla2x00_iospace_config(scsi_qla_host_t *ha)
1257 {
1258         unsigned long   pio, pio_len, pio_flags;
1259         unsigned long   mmio, mmio_len, mmio_flags;
1260
1261         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1262         pio = pci_resource_start(ha->pdev, 0);
1263         pio_len = pci_resource_len(ha->pdev, 0);
1264         pio_flags = pci_resource_flags(ha->pdev, 0);
1265         if (pio_flags & IORESOURCE_IO) {
1266                 if (pio_len < MIN_IOBASE_LEN) {
1267                         qla_printk(KERN_WARNING, ha,
1268                             "Invalid PCI I/O region size (%s)...\n",
1269                                 pci_name(ha->pdev));
1270                         pio = 0;
1271                 }
1272         } else {
1273                 qla_printk(KERN_WARNING, ha,
1274                     "region #0 not a PIO resource (%s)...\n",
1275                     pci_name(ha->pdev));
1276                 pio = 0;
1277         }
1278
1279         /* Use MMIO operations for all accesses. */
1280         mmio = pci_resource_start(ha->pdev, 1);
1281         mmio_len = pci_resource_len(ha->pdev, 1);
1282         mmio_flags = pci_resource_flags(ha->pdev, 1);
1283
1284         if (!(mmio_flags & IORESOURCE_MEM)) {
1285                 qla_printk(KERN_ERR, ha,
1286                     "region #0 not an MMIO resource (%s), aborting\n",
1287                     pci_name(ha->pdev));
1288                 goto iospace_error_exit;
1289         }
1290         if (mmio_len < MIN_IOBASE_LEN) {
1291                 qla_printk(KERN_ERR, ha,
1292                     "Invalid PCI mem region size (%s), aborting\n",
1293                         pci_name(ha->pdev));
1294                 goto iospace_error_exit;
1295         }
1296
1297         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1298                 qla_printk(KERN_WARNING, ha,
1299                     "Failed to reserve PIO/MMIO regions (%s)\n",
1300                     pci_name(ha->pdev));
1301
1302                 goto iospace_error_exit;
1303         }
1304
1305         ha->pio_address = pio;
1306         ha->pio_length = pio_len;
1307         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1308         if (!ha->iobase) {
1309                 qla_printk(KERN_ERR, ha,
1310                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1311
1312                 goto iospace_error_exit;
1313         }
1314
1315         return (0);
1316
1317 iospace_error_exit:
1318         return (-ENOMEM);
1319 }
1320
1321 static void
1322 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1323 {
1324         unsigned long flags = 0;
1325         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1326
1327         spin_lock_irqsave(&ha->hardware_lock, flags);
1328         ha->interrupts_on = 1;
1329         /* enable risc and host interrupts */
1330         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1331         RD_REG_WORD(&reg->ictrl);
1332         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1333
1334 }
1335
1336 static void
1337 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1338 {
1339         unsigned long flags = 0;
1340         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1341
1342         spin_lock_irqsave(&ha->hardware_lock, flags);
1343         ha->interrupts_on = 0;
1344         /* disable risc and host interrupts */
1345         WRT_REG_WORD(&reg->ictrl, 0);
1346         RD_REG_WORD(&reg->ictrl);
1347         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1348 }
1349
1350 static void
1351 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1352 {
1353         unsigned long flags = 0;
1354         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1355
1356         spin_lock_irqsave(&ha->hardware_lock, flags);
1357         ha->interrupts_on = 1;
1358         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1359         RD_REG_DWORD(&reg->ictrl);
1360         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1361 }
1362
1363 static void
1364 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1365 {
1366         unsigned long flags = 0;
1367         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1368
1369         spin_lock_irqsave(&ha->hardware_lock, flags);
1370         ha->interrupts_on = 0;
1371         WRT_REG_DWORD(&reg->ictrl, 0);
1372         RD_REG_DWORD(&reg->ictrl);
1373         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1374 }
1375
1376 static void
1377 qla2xxx_scan_start(struct Scsi_Host *shost)
1378 {
1379         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1380
1381         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1382         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1383         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1384 }
1385
1386 static int
1387 qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
1388 {
1389         scsi_qla_host_t *ha = (scsi_qla_host_t *)shost->hostdata;
1390
1391         if (!ha->host)
1392                 return 1;
1393         if (time > ha->loop_reset_delay * HZ)
1394                 return 1;
1395
1396         return atomic_read(&ha->loop_state) == LOOP_READY;
1397 }
1398
1399 /*
1400  * PCI driver interface
1401  */
1402 static int __devinit
1403 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1404 {
1405         int     ret = -ENODEV;
1406         device_reg_t __iomem *reg;
1407         struct Scsi_Host *host;
1408         scsi_qla_host_t *ha;
1409         unsigned long   flags = 0;
1410         char pci_info[20];
1411         char fw_str[30];
1412         struct scsi_host_template *sht;
1413
1414         if (pci_enable_device(pdev))
1415                 goto probe_out;
1416
1417         sht = &qla2x00_driver_template;
1418         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1419             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
1420             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
1421             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432)
1422                 sht = &qla24xx_driver_template;
1423         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1424         if (host == NULL) {
1425                 printk(KERN_WARNING
1426                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1427                 goto probe_disable_device;
1428         }
1429
1430         /* Clear our data area */
1431         ha = (scsi_qla_host_t *)host->hostdata;
1432         memset(ha, 0, sizeof(scsi_qla_host_t));
1433
1434         ha->pdev = pdev;
1435         ha->host = host;
1436         ha->host_no = host->host_no;
1437         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1438
1439         /* Set ISP-type information. */
1440         qla2x00_set_isp_flags(ha);
1441
1442         /* Configure PCI I/O space */
1443         ret = qla2x00_iospace_config(ha);
1444         if (ret)
1445                 goto probe_failed;
1446
1447         qla_printk(KERN_INFO, ha,
1448             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1449             ha->iobase);
1450
1451         spin_lock_init(&ha->hardware_lock);
1452
1453         ha->prev_topology = 0;
1454         ha->init_cb_size = sizeof(init_cb_t);
1455         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1456         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1457         ha->optrom_size = OPTROM_SIZE_2300;
1458
1459         ha->max_q_depth = MAX_Q_DEPTH;
1460         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1461                 ha->max_q_depth = ql2xmaxqdepth;
1462
1463         /* Assign ISP specific operations. */
1464         ha->isp_ops.pci_config          = qla2100_pci_config;
1465         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1466         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1467         ha->isp_ops.config_rings        = qla2x00_config_rings;
1468         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1469         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1470         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1471         ha->isp_ops.load_risc           = qla2x00_load_risc;
1472         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1473         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1474         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1475         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1476         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1477         ha->isp_ops.abort_command       = qla2x00_abort_command;
1478         ha->isp_ops.abort_target        = qla2x00_abort_target;
1479         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1480         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1481         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1482         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1483         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1484         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1485         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1486         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1487         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1488         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1489         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1490         ha->isp_ops.get_flash_version   = qla2x00_get_flash_version;
1491         if (IS_QLA2100(ha)) {
1492                 host->max_id = MAX_TARGETS_2100;
1493                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1494                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1495                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1496                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1497                 host->sg_tablesize = 32;
1498                 ha->gid_list_info_size = 4;
1499         } else if (IS_QLA2200(ha)) {
1500                 host->max_id = MAX_TARGETS_2200;
1501                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1502                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1503                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1504                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1505                 ha->gid_list_info_size = 4;
1506         } else if (IS_QLA23XX(ha)) {
1507                 host->max_id = MAX_TARGETS_2200;
1508                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1509                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1510                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1511                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1512                 ha->isp_ops.pci_config = qla2300_pci_config;
1513                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1514                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1515                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1516                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1517                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1518                 ha->gid_list_info_size = 6;
1519                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1520                         ha->optrom_size = OPTROM_SIZE_2322;
1521         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1522                 host->max_id = MAX_TARGETS_2200;
1523                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1524                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1525                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1526                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1527                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1528                 ha->mgmt_svr_loop_id = 10;
1529                 ha->isp_ops.pci_config = qla24xx_pci_config;
1530                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1531                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1532                 ha->isp_ops.config_rings = qla24xx_config_rings;
1533                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1534                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1535                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1536                 ha->isp_ops.load_risc = qla24xx_load_risc;
1537                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1538                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1539                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1540                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1541                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1542                 ha->isp_ops.abort_command = qla24xx_abort_command;
1543                 ha->isp_ops.abort_target = qla24xx_abort_target;
1544                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1545                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1546                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1547                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1548                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1549                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1550                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1551                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1552                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1553                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1554                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1555                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1556                 ha->isp_ops.get_flash_version = qla24xx_get_flash_version;
1557                 ha->gid_list_info_size = 8;
1558                 ha->optrom_size = OPTROM_SIZE_24XX;
1559         }
1560         host->can_queue = ha->request_q_length + 128;
1561
1562         /* load the F/W, read paramaters, and init the H/W */
1563         ha->instance = num_hosts;
1564
1565         init_MUTEX(&ha->mbx_cmd_sem);
1566         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1567
1568         INIT_LIST_HEAD(&ha->list);
1569         INIT_LIST_HEAD(&ha->fcports);
1570
1571         qla2x00_config_dma_addressing(ha);
1572         if (qla2x00_mem_alloc(ha)) {
1573                 qla_printk(KERN_WARNING, ha,
1574                     "[ERROR] Failed to allocate memory for adapter\n");
1575
1576                 ret = -ENOMEM;
1577                 goto probe_failed;
1578         }
1579
1580         if (qla2x00_initialize_adapter(ha)) {
1581                 qla_printk(KERN_WARNING, ha,
1582                     "Failed to initialize adapter\n");
1583
1584                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1585                     "Adapter flags %x.\n",
1586                     ha->host_no, ha->device_flags));
1587
1588                 ret = -ENODEV;
1589                 goto probe_failed;
1590         }
1591
1592         /*
1593          * Startup the kernel thread for this host adapter
1594          */
1595         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1596                         "%s_dpc", ha->host_str);
1597         if (IS_ERR(ha->dpc_thread)) {
1598                 qla_printk(KERN_WARNING, ha,
1599                     "Unable to start DPC thread!\n");
1600                 ret = PTR_ERR(ha->dpc_thread);
1601                 goto probe_failed;
1602         }
1603
1604         host->this_id = 255;
1605         host->cmd_per_lun = 3;
1606         host->unique_id = ha->instance;
1607         host->max_cmd_len = MAX_CMDSZ;
1608         host->max_channel = MAX_BUSES - 1;
1609         host->max_lun = MAX_LUNS;
1610         host->transportt = qla2xxx_transport_template;
1611
1612         ret = qla2x00_request_irqs(ha);
1613         if (ret)
1614                 goto probe_failed;
1615
1616         /* Initialized the timer */
1617         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1618
1619         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1620             ha->host_no, ha));
1621
1622         ha->isp_ops.disable_intrs(ha);
1623
1624         spin_lock_irqsave(&ha->hardware_lock, flags);
1625         reg = ha->iobase;
1626         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1627                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1628                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1629         } else {
1630                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1631                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1632                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1633
1634                 /* Enable proper parity */
1635                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1636                         if (IS_QLA2300(ha))
1637                                 /* SRAM parity */
1638                                 WRT_REG_WORD(&reg->isp.hccr,
1639                                     (HCCR_ENABLE_PARITY + 0x1));
1640                         else
1641                                 /* SRAM, Instruction RAM and GP RAM parity */
1642                                 WRT_REG_WORD(&reg->isp.hccr,
1643                                     (HCCR_ENABLE_PARITY + 0x7));
1644                 }
1645         }
1646         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1647
1648         ha->isp_ops.enable_intrs(ha);
1649
1650         pci_set_drvdata(pdev, ha);
1651
1652         ha->flags.init_done = 1;
1653         ha->flags.online = 1;
1654
1655         num_hosts++;
1656
1657         ret = scsi_add_host(host, &pdev->dev);
1658         if (ret)
1659                 goto probe_failed;
1660
1661         scsi_scan_host(host);
1662
1663         qla2x00_alloc_sysfs_attr(ha);
1664
1665         qla2x00_init_host_attr(ha);
1666
1667         qla_printk(KERN_INFO, ha, "\n"
1668             " QLogic Fibre Channel HBA Driver: %s\n"
1669             "  QLogic %s - %s\n"
1670             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1671             qla2x00_version_str, ha->model_number,
1672             ha->model_desc ? ha->model_desc: "", pdev->device,
1673             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1674             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1675             ha->isp_ops.fw_version_str(ha, fw_str));
1676
1677         return 0;
1678
1679 probe_failed:
1680         qla2x00_free_device(ha);
1681
1682         scsi_host_put(host);
1683
1684 probe_disable_device:
1685         pci_disable_device(pdev);
1686
1687 probe_out:
1688         return ret;
1689 }
1690
1691 static void __devexit
1692 qla2x00_remove_one(struct pci_dev *pdev)
1693 {
1694         scsi_qla_host_t *ha;
1695
1696         ha = pci_get_drvdata(pdev);
1697
1698         qla2x00_free_sysfs_attr(ha);
1699
1700         fc_remove_host(ha->host);
1701
1702         scsi_remove_host(ha->host);
1703
1704         qla2x00_free_device(ha);
1705
1706         scsi_host_put(ha->host);
1707
1708         pci_disable_device(pdev);
1709         pci_set_drvdata(pdev, NULL);
1710 }
1711
1712 static void
1713 qla2x00_free_device(scsi_qla_host_t *ha)
1714 {
1715         /* Disable timer */
1716         if (ha->timer_active)
1717                 qla2x00_stop_timer(ha);
1718
1719         /* Kill the kernel thread for this host */
1720         if (ha->dpc_thread) {
1721                 struct task_struct *t = ha->dpc_thread;
1722
1723                 /*
1724                  * qla2xxx_wake_dpc checks for ->dpc_thread
1725                  * so we need to zero it out.
1726                  */
1727                 ha->dpc_thread = NULL;
1728                 kthread_stop(t);
1729         }
1730
1731         if (ha->eft)
1732                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1733
1734         ha->flags.online = 0;
1735
1736         /* Stop currently executing firmware. */
1737         qla2x00_try_to_stop_firmware(ha);
1738
1739         /* turn-off interrupts on the card */
1740         if (ha->interrupts_on)
1741                 ha->isp_ops.disable_intrs(ha);
1742
1743         qla2x00_mem_free(ha);
1744
1745         qla2x00_free_irqs(ha);
1746
1747         /* release io space registers  */
1748         if (ha->iobase)
1749                 iounmap(ha->iobase);
1750         pci_release_regions(ha->pdev);
1751 }
1752
1753 static inline void
1754 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1755     int defer)
1756 {
1757         unsigned long flags;
1758         struct fc_rport *rport;
1759
1760         if (!fcport->rport)
1761                 return;
1762
1763         rport = fcport->rport;
1764         if (defer) {
1765                 spin_lock_irqsave(&fcport->rport_lock, flags);
1766                 fcport->drport = rport;
1767                 fcport->rport = NULL;
1768                 *(fc_port_t **)rport->dd_data = NULL;
1769                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1770                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1771         } else {
1772                 spin_lock_irqsave(&fcport->rport_lock, flags);
1773                 fcport->rport = NULL;
1774                 *(fc_port_t **)rport->dd_data = NULL;
1775                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1776                 fc_remote_port_delete(rport);
1777         }
1778 }
1779
1780 /*
1781  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1782  *
1783  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1784  *
1785  * Return: None.
1786  *
1787  * Context:
1788  */
1789 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1790     int do_login, int defer)
1791 {
1792         if (atomic_read(&fcport->state) == FCS_ONLINE)
1793                 qla2x00_schedule_rport_del(ha, fcport, defer);
1794
1795         /*
1796          * We may need to retry the login, so don't change the state of the
1797          * port but do the retries.
1798          */
1799         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1800                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1801
1802         if (!do_login)
1803                 return;
1804
1805         if (fcport->login_retry == 0) {
1806                 fcport->login_retry = ha->login_retry_count;
1807                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1808
1809                 DEBUG(printk("scsi(%ld): Port login retry: "
1810                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1811                     "id = 0x%04x retry cnt=%d\n",
1812                     ha->host_no,
1813                     fcport->port_name[0],
1814                     fcport->port_name[1],
1815                     fcport->port_name[2],
1816                     fcport->port_name[3],
1817                     fcport->port_name[4],
1818                     fcport->port_name[5],
1819                     fcport->port_name[6],
1820                     fcport->port_name[7],
1821                     fcport->loop_id,
1822                     fcport->login_retry));
1823         }
1824 }
1825
1826 /*
1827  * qla2x00_mark_all_devices_lost
1828  *      Updates fcport state when device goes offline.
1829  *
1830  * Input:
1831  *      ha = adapter block pointer.
1832  *      fcport = port structure pointer.
1833  *
1834  * Return:
1835  *      None.
1836  *
1837  * Context:
1838  */
1839 void
1840 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1841 {
1842         fc_port_t *fcport;
1843
1844         list_for_each_entry(fcport, &ha->fcports, list) {
1845                 if (fcport->port_type != FCT_TARGET)
1846                         continue;
1847
1848                 /*
1849                  * No point in marking the device as lost, if the device is
1850                  * already DEAD.
1851                  */
1852                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1853                         continue;
1854                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1855                         qla2x00_schedule_rport_del(ha, fcport, defer);
1856                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1857         }
1858
1859         if (defer)
1860                 qla2xxx_wake_dpc(ha);
1861 }
1862
1863 /*
1864 * qla2x00_mem_alloc
1865 *      Allocates adapter memory.
1866 *
1867 * Returns:
1868 *      0  = success.
1869 *      1  = failure.
1870 */
1871 static uint8_t
1872 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1873 {
1874         char    name[16];
1875         uint8_t   status = 1;
1876         int     retry= 10;
1877
1878         do {
1879                 /*
1880                  * This will loop only once if everything goes well, else some
1881                  * number of retries will be performed to get around a kernel
1882                  * bug where available mem is not allocated until after a
1883                  * little delay and a retry.
1884                  */
1885                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1886                     (ha->request_q_length + 1) * sizeof(request_t),
1887                     &ha->request_dma, GFP_KERNEL);
1888                 if (ha->request_ring == NULL) {
1889                         qla_printk(KERN_WARNING, ha,
1890                             "Memory Allocation failed - request_ring\n");
1891
1892                         qla2x00_mem_free(ha);
1893                         msleep(100);
1894
1895                         continue;
1896                 }
1897
1898                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1899                     (ha->response_q_length + 1) * sizeof(response_t),
1900                     &ha->response_dma, GFP_KERNEL);
1901                 if (ha->response_ring == NULL) {
1902                         qla_printk(KERN_WARNING, ha,
1903                             "Memory Allocation failed - response_ring\n");
1904
1905                         qla2x00_mem_free(ha);
1906                         msleep(100);
1907
1908                         continue;
1909                 }
1910
1911                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1912                     &ha->gid_list_dma, GFP_KERNEL);
1913                 if (ha->gid_list == NULL) {
1914                         qla_printk(KERN_WARNING, ha,
1915                             "Memory Allocation failed - gid_list\n");
1916
1917                         qla2x00_mem_free(ha);
1918                         msleep(100);
1919
1920                         continue;
1921                 }
1922
1923                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1924                     ha->host_no);
1925                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1926                     DMA_POOL_SIZE, 8, 0);
1927                 if (ha->s_dma_pool == NULL) {
1928                         qla_printk(KERN_WARNING, ha,
1929                             "Memory Allocation failed - s_dma_pool\n");
1930
1931                         qla2x00_mem_free(ha);
1932                         msleep(100);
1933
1934                         continue;
1935                 }
1936
1937                 /* get consistent memory allocated for init control block */
1938                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1939                     &ha->init_cb_dma);
1940                 if (ha->init_cb == NULL) {
1941                         qla_printk(KERN_WARNING, ha,
1942                             "Memory Allocation failed - init_cb\n");
1943
1944                         qla2x00_mem_free(ha);
1945                         msleep(100);
1946
1947                         continue;
1948                 }
1949                 memset(ha->init_cb, 0, ha->init_cb_size);
1950
1951                 if (qla2x00_allocate_sp_pool(ha)) {
1952                         qla_printk(KERN_WARNING, ha,
1953                             "Memory Allocation failed - "
1954                             "qla2x00_allocate_sp_pool()\n");
1955
1956                         qla2x00_mem_free(ha);
1957                         msleep(100);
1958
1959                         continue;
1960                 }
1961
1962                 /* Allocate memory for SNS commands */
1963                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1964                         /* Get consistent memory allocated for SNS commands */
1965                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1966                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1967                             GFP_KERNEL);
1968                         if (ha->sns_cmd == NULL) {
1969                                 /* error */
1970                                 qla_printk(KERN_WARNING, ha,
1971                                     "Memory Allocation failed - sns_cmd\n");
1972
1973                                 qla2x00_mem_free(ha);
1974                                 msleep(100);
1975
1976                                 continue;
1977                         }
1978                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1979                 } else {
1980                         /* Get consistent memory allocated for MS IOCB */
1981                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1982                             &ha->ms_iocb_dma);
1983                         if (ha->ms_iocb == NULL) {
1984                                 /* error */
1985                                 qla_printk(KERN_WARNING, ha,
1986                                     "Memory Allocation failed - ms_iocb\n");
1987
1988                                 qla2x00_mem_free(ha);
1989                                 msleep(100);
1990
1991                                 continue;
1992                         }
1993                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1994
1995                         /*
1996                          * Get consistent memory allocated for CT SNS
1997                          * commands
1998                          */
1999                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2000                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2001                             GFP_KERNEL);
2002                         if (ha->ct_sns == NULL) {
2003                                 /* error */
2004                                 qla_printk(KERN_WARNING, ha,
2005                                     "Memory Allocation failed - ct_sns\n");
2006
2007                                 qla2x00_mem_free(ha);
2008                                 msleep(100);
2009
2010                                 continue;
2011                         }
2012                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2013
2014                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2015                                 /*
2016                                  * Get consistent memory allocated for SFP
2017                                  * block.
2018                                  */
2019                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
2020                                     GFP_KERNEL, &ha->sfp_data_dma);
2021                                 if (ha->sfp_data == NULL) {
2022                                         qla_printk(KERN_WARNING, ha,
2023                                             "Memory Allocation failed - "
2024                                             "sfp_data\n");
2025
2026                                         qla2x00_mem_free(ha);
2027                                         msleep(100);
2028
2029                                         continue;
2030                                 }
2031                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
2032                         }
2033                 }
2034
2035                 /* Done all allocations without any error. */
2036                 status = 0;
2037
2038         } while (retry-- && status != 0);
2039
2040         if (status) {
2041                 printk(KERN_WARNING
2042                         "%s(): **** FAILED ****\n", __func__);
2043         }
2044
2045         return(status);
2046 }
2047
2048 /*
2049 * qla2x00_mem_free
2050 *      Frees all adapter allocated memory.
2051 *
2052 * Input:
2053 *      ha = adapter block pointer.
2054 */
2055 static void
2056 qla2x00_mem_free(scsi_qla_host_t *ha)
2057 {
2058         struct list_head        *fcpl, *fcptemp;
2059         fc_port_t       *fcport;
2060
2061         if (ha == NULL) {
2062                 /* error */
2063                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2064                 return;
2065         }
2066
2067         /* free sp pool */
2068         qla2x00_free_sp_pool(ha);
2069
2070         if (ha->fw_dump) {
2071                 if (ha->eft)
2072                         dma_free_coherent(&ha->pdev->dev,
2073                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2074                 vfree(ha->fw_dump);
2075         }
2076
2077         if (ha->sns_cmd)
2078                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2079                     ha->sns_cmd, ha->sns_cmd_dma);
2080
2081         if (ha->ct_sns)
2082                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2083                     ha->ct_sns, ha->ct_sns_dma);
2084
2085         if (ha->sfp_data)
2086                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2087
2088         if (ha->ms_iocb)
2089                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2090
2091         if (ha->init_cb)
2092                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2093
2094         if (ha->s_dma_pool)
2095                 dma_pool_destroy(ha->s_dma_pool);
2096
2097         if (ha->gid_list)
2098                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2099                     ha->gid_list_dma);
2100
2101         if (ha->response_ring)
2102                 dma_free_coherent(&ha->pdev->dev,
2103                     (ha->response_q_length + 1) * sizeof(response_t),
2104                     ha->response_ring, ha->response_dma);
2105
2106         if (ha->request_ring)
2107                 dma_free_coherent(&ha->pdev->dev,
2108                     (ha->request_q_length + 1) * sizeof(request_t),
2109                     ha->request_ring, ha->request_dma);
2110
2111         ha->eft = NULL;
2112         ha->eft_dma = 0;
2113         ha->sns_cmd = NULL;
2114         ha->sns_cmd_dma = 0;
2115         ha->ct_sns = NULL;
2116         ha->ct_sns_dma = 0;
2117         ha->ms_iocb = NULL;
2118         ha->ms_iocb_dma = 0;
2119         ha->init_cb = NULL;
2120         ha->init_cb_dma = 0;
2121
2122         ha->s_dma_pool = NULL;
2123
2124         ha->gid_list = NULL;
2125         ha->gid_list_dma = 0;
2126
2127         ha->response_ring = NULL;
2128         ha->response_dma = 0;
2129         ha->request_ring = NULL;
2130         ha->request_dma = 0;
2131
2132         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2133                 fcport = list_entry(fcpl, fc_port_t, list);
2134
2135                 /* fc ports */
2136                 list_del_init(&fcport->list);
2137                 kfree(fcport);
2138         }
2139         INIT_LIST_HEAD(&ha->fcports);
2140
2141         ha->fw_dump = NULL;
2142         ha->fw_dumped = 0;
2143         ha->fw_dump_reading = 0;
2144
2145         vfree(ha->optrom_buffer);
2146 }
2147
2148 /*
2149  * qla2x00_allocate_sp_pool
2150  *       This routine is called during initialization to allocate
2151  *       memory for local srb_t.
2152  *
2153  * Input:
2154  *       ha   = adapter block pointer.
2155  *
2156  * Context:
2157  *      Kernel context.
2158  */
2159 static int
2160 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2161 {
2162         int      rval;
2163
2164         rval = QLA_SUCCESS;
2165         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2166         if (ha->srb_mempool == NULL) {
2167                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2168                 rval = QLA_FUNCTION_FAILED;
2169         }
2170         return (rval);
2171 }
2172
2173 /*
2174  *  This routine frees all adapter allocated memory.
2175  *
2176  */
2177 static void
2178 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2179 {
2180         if (ha->srb_mempool) {
2181                 mempool_destroy(ha->srb_mempool);
2182                 ha->srb_mempool = NULL;
2183         }
2184 }
2185
2186 /**************************************************************************
2187 * qla2x00_do_dpc
2188 *   This kernel thread is a task that is schedule by the interrupt handler
2189 *   to perform the background processing for interrupts.
2190 *
2191 * Notes:
2192 * This task always run in the context of a kernel thread.  It
2193 * is kick-off by the driver's detect code and starts up
2194 * up one per adapter. It immediately goes to sleep and waits for
2195 * some fibre event.  When either the interrupt handler or
2196 * the timer routine detects a event it will one of the task
2197 * bits then wake us up.
2198 **************************************************************************/
2199 static int
2200 qla2x00_do_dpc(void *data)
2201 {
2202         scsi_qla_host_t *ha;
2203         fc_port_t       *fcport;
2204         uint8_t         status;
2205         uint16_t        next_loopid;
2206
2207         ha = (scsi_qla_host_t *)data;
2208
2209         set_user_nice(current, -20);
2210
2211         while (!kthread_should_stop()) {
2212                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2213
2214                 set_current_state(TASK_INTERRUPTIBLE);
2215                 schedule();
2216                 __set_current_state(TASK_RUNNING);
2217
2218                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2219
2220                 /* Initialization not yet finished. Don't do anything yet. */
2221                 if (!ha->flags.init_done)
2222                         continue;
2223
2224                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2225
2226                 ha->dpc_active = 1;
2227
2228                 if (ha->flags.mbox_busy) {
2229                         ha->dpc_active = 0;
2230                         continue;
2231                 }
2232
2233                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2234
2235                         DEBUG(printk("scsi(%ld): dpc: sched "
2236                             "qla2x00_abort_isp ha = %p\n",
2237                             ha->host_no, ha));
2238                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2239                             &ha->dpc_flags))) {
2240
2241                                 if (qla2x00_abort_isp(ha)) {
2242                                         /* failed. retry later */
2243                                         set_bit(ISP_ABORT_NEEDED,
2244                                             &ha->dpc_flags);
2245                                 }
2246                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2247                         }
2248                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2249                             ha->host_no));
2250                 }
2251
2252                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2253                         qla2x00_update_fcports(ha);
2254
2255                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2256                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2257                             ha->host_no));
2258                         qla2x00_loop_reset(ha);
2259                 }
2260
2261                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2262                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2263
2264                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2265                             ha->host_no));
2266
2267                         qla2x00_rst_aen(ha);
2268                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2269                 }
2270
2271                 /* Retry each device up to login retry count */
2272                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2273                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2274                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2275
2276                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2277                             ha->host_no));
2278
2279                         next_loopid = 0;
2280                         list_for_each_entry(fcport, &ha->fcports, list) {
2281                                 /*
2282                                  * If the port is not ONLINE then try to login
2283                                  * to it if we haven't run out of retries.
2284                                  */
2285                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2286                                     fcport->login_retry) {
2287
2288                                         fcport->login_retry--;
2289                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2290                                                 if (fcport->flags &
2291                                                     FCF_TAPE_PRESENT)
2292                                                         ha->isp_ops.fabric_logout(
2293                                                             ha, fcport->loop_id,
2294                                                             fcport->d_id.b.domain,
2295                                                             fcport->d_id.b.area,
2296                                                             fcport->d_id.b.al_pa);
2297                                                 status = qla2x00_fabric_login(
2298                                                     ha, fcport, &next_loopid);
2299                                         } else
2300                                                 status =
2301                                                     qla2x00_local_device_login(
2302                                                         ha, fcport);
2303
2304                                         if (status == QLA_SUCCESS) {
2305                                                 fcport->old_loop_id = fcport->loop_id;
2306
2307                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2308                                                     ha->host_no, fcport->loop_id));
2309
2310                                                 qla2x00_update_fcport(ha,
2311                                                     fcport);
2312                                         } else if (status == 1) {
2313                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2314                                                 /* retry the login again */
2315                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2316                                                     ha->host_no,
2317                                                     fcport->login_retry, fcport->loop_id));
2318                                         } else {
2319                                                 fcport->login_retry = 0;
2320                                         }
2321                                 }
2322                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2323                                         break;
2324                         }
2325                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2326                             ha->host_no));
2327                 }
2328
2329                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2330                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2331
2332                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2333                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2334                             ha->host_no));
2335
2336                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2337
2338                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2339                             ha->host_no));
2340                 }
2341
2342                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2343
2344                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2345                             ha->host_no));
2346
2347                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2348                             &ha->dpc_flags))) {
2349
2350                                 qla2x00_loop_resync(ha);
2351
2352                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2353                         }
2354
2355                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2356                             ha->host_no));
2357                 }
2358
2359                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2360
2361                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2362                             ha->host_no));
2363
2364                         qla2x00_rescan_fcports(ha);
2365
2366                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2367                             "end.\n",
2368                             ha->host_no));
2369                 }
2370
2371                 if (!ha->interrupts_on)
2372                         ha->isp_ops.enable_intrs(ha);
2373
2374                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2375                         ha->isp_ops.beacon_blink(ha);
2376
2377                 ha->dpc_active = 0;
2378         } /* End of while(1) */
2379
2380         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2381
2382         /*
2383          * Make sure that nobody tries to wake us up again.
2384          */
2385         ha->dpc_active = 0;
2386
2387         return 0;
2388 }
2389
2390 void
2391 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2392 {
2393         if (ha->dpc_thread)
2394                 wake_up_process(ha->dpc_thread);
2395 }
2396
2397 /*
2398 *  qla2x00_rst_aen
2399 *      Processes asynchronous reset.
2400 *
2401 * Input:
2402 *      ha  = adapter block pointer.
2403 */
2404 static void
2405 qla2x00_rst_aen(scsi_qla_host_t *ha)
2406 {
2407         if (ha->flags.online && !ha->flags.reset_active &&
2408             !atomic_read(&ha->loop_down_timer) &&
2409             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2410                 do {
2411                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2412
2413                         /*
2414                          * Issue marker command only when we are going to start
2415                          * the I/O.
2416                          */
2417                         ha->marker_needed = 1;
2418                 } while (!atomic_read(&ha->loop_down_timer) &&
2419                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2420         }
2421 }
2422
2423 static void
2424 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2425 {
2426         struct scsi_cmnd *cmd = sp->cmd;
2427
2428         if (sp->flags & SRB_DMA_VALID) {
2429                 if (cmd->use_sg) {
2430                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2431                             cmd->use_sg, cmd->sc_data_direction);
2432                 } else if (cmd->request_bufflen) {
2433                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2434                             cmd->request_bufflen, cmd->sc_data_direction);
2435                 }
2436                 sp->flags &= ~SRB_DMA_VALID;
2437         }
2438         CMD_SP(cmd) = NULL;
2439 }
2440
2441 void
2442 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2443 {
2444         struct scsi_cmnd *cmd = sp->cmd;
2445
2446         qla2x00_sp_free_dma(ha, sp);
2447
2448         mempool_free(sp, ha->srb_mempool);
2449
2450         cmd->scsi_done(cmd);
2451 }
2452
2453 /**************************************************************************
2454 *   qla2x00_timer
2455 *
2456 * Description:
2457 *   One second timer
2458 *
2459 * Context: Interrupt
2460 ***************************************************************************/
2461 static void
2462 qla2x00_timer(scsi_qla_host_t *ha)
2463 {
2464         unsigned long   cpu_flags = 0;
2465         fc_port_t       *fcport;
2466         int             start_dpc = 0;
2467         int             index;
2468         srb_t           *sp;
2469         int             t;
2470
2471         /*
2472          * Ports - Port down timer.
2473          *
2474          * Whenever, a port is in the LOST state we start decrementing its port
2475          * down timer every second until it reaches zero. Once  it reaches zero
2476          * the port it marked DEAD.
2477          */
2478         t = 0;
2479         list_for_each_entry(fcport, &ha->fcports, list) {
2480                 if (fcport->port_type != FCT_TARGET)
2481                         continue;
2482
2483                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2484
2485                         if (atomic_read(&fcport->port_down_timer) == 0)
2486                                 continue;
2487
2488                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2489                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2490
2491                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2492                             "%d remaining\n",
2493                             ha->host_no,
2494                             t, atomic_read(&fcport->port_down_timer)));
2495                 }
2496                 t++;
2497         } /* End of for fcport  */
2498
2499
2500         /* Loop down handler. */
2501         if (atomic_read(&ha->loop_down_timer) > 0 &&
2502             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2503
2504                 if (atomic_read(&ha->loop_down_timer) ==
2505                     ha->loop_down_abort_time) {
2506
2507                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2508                             "queues before time expire\n",
2509                             ha->host_no));
2510
2511                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2512                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2513
2514                         /* Schedule an ISP abort to return any tape commands. */
2515                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2516                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2517                             index++) {
2518                                 fc_port_t *sfcp;
2519
2520                                 sp = ha->outstanding_cmds[index];
2521                                 if (!sp)
2522                                         continue;
2523                                 sfcp = sp->fcport;
2524                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2525                                         continue;
2526
2527                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2528                                 break;
2529                         }
2530                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2531
2532                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2533                         start_dpc++;
2534                 }
2535
2536                 /* if the loop has been down for 4 minutes, reinit adapter */
2537                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2538                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2539                             "restarting queues.\n",
2540                             ha->host_no));
2541
2542                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2543                         start_dpc++;
2544
2545                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2546                                 DEBUG(printk("scsi(%ld): Loop down - "
2547                                     "aborting ISP.\n",
2548                                     ha->host_no));
2549                                 qla_printk(KERN_WARNING, ha,
2550                                     "Loop down - aborting ISP.\n");
2551
2552                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2553                         }
2554                 }
2555                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2556                     ha->host_no,
2557                     atomic_read(&ha->loop_down_timer)));
2558         }
2559
2560         /* Check if beacon LED needs to be blinked */
2561         if (ha->beacon_blink_led == 1) {
2562                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2563                 start_dpc++;
2564         }
2565
2566         /* Schedule the DPC routine if needed */
2567         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2568             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2569             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2570             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2571             start_dpc ||
2572             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2573             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2574             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2575             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2576                 qla2xxx_wake_dpc(ha);
2577
2578         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2579 }
2580
2581 /* XXX(hch): crude hack to emulate a down_timeout() */
2582 int
2583 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2584 {
2585         const unsigned int step = 100; /* msecs */
2586         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2587
2588         do {
2589                 if (!down_trylock(sema))
2590                         return 0;
2591                 if (msleep_interruptible(step))
2592                         break;
2593         } while (--iterations > 0);
2594
2595         return -ETIMEDOUT;
2596 }
2597
2598 /* Firmware interface routines. */
2599
2600 #define FW_BLOBS        5
2601 #define FW_ISP21XX      0
2602 #define FW_ISP22XX      1
2603 #define FW_ISP2300      2
2604 #define FW_ISP2322      3
2605 #define FW_ISP24XX      4
2606
2607 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2608 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2609 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2610 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2611 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2612
2613 static DECLARE_MUTEX(qla_fw_lock);
2614
2615 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2616         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2617         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2618         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2619         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2620         { .name = FW_FILE_ISP24XX, },
2621 };
2622
2623 struct fw_blob *
2624 qla2x00_request_firmware(scsi_qla_host_t *ha)
2625 {
2626         struct fw_blob *blob;
2627
2628         blob = NULL;
2629         if (IS_QLA2100(ha)) {
2630                 blob = &qla_fw_blobs[FW_ISP21XX];
2631         } else if (IS_QLA2200(ha)) {
2632                 blob = &qla_fw_blobs[FW_ISP22XX];
2633         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2634                 blob = &qla_fw_blobs[FW_ISP2300];
2635         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2636                 blob = &qla_fw_blobs[FW_ISP2322];
2637         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2638                 blob = &qla_fw_blobs[FW_ISP24XX];
2639         }
2640
2641         down(&qla_fw_lock);
2642         if (blob->fw)
2643                 goto out;
2644
2645         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2646                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2647                     "(%s).\n", ha->host_no, blob->name));
2648                 blob->fw = NULL;
2649                 blob = NULL;
2650                 goto out;
2651         }
2652
2653 out:
2654         up(&qla_fw_lock);
2655         return blob;
2656 }
2657
2658 static void
2659 qla2x00_release_firmware(void)
2660 {
2661         int idx;
2662
2663         down(&qla_fw_lock);
2664         for (idx = 0; idx < FW_BLOBS; idx++)
2665                 if (qla_fw_blobs[idx].fw)
2666                         release_firmware(qla_fw_blobs[idx].fw);
2667         up(&qla_fw_lock);
2668 }
2669
2670 static struct pci_device_id qla2xxx_pci_tbl[] = {
2671         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2672         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2673         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2674         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2675         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2676         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2677         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2678         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2679         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2680         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2681         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2682         { 0 },
2683 };
2684 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2685
2686 static struct pci_driver qla2xxx_pci_driver = {
2687         .name           = QLA2XXX_DRIVER_NAME,
2688         .driver         = {
2689                 .owner          = THIS_MODULE,
2690         },
2691         .id_table       = qla2xxx_pci_tbl,
2692         .probe          = qla2x00_probe_one,
2693         .remove         = __devexit_p(qla2x00_remove_one),
2694 };
2695
2696 /**
2697  * qla2x00_module_init - Module initialization.
2698  **/
2699 static int __init
2700 qla2x00_module_init(void)
2701 {
2702         int ret = 0;
2703
2704         /* Allocate cache for SRBs. */
2705         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2706             SLAB_HWCACHE_ALIGN, NULL, NULL);
2707         if (srb_cachep == NULL) {
2708                 printk(KERN_ERR
2709                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2710                 return -ENOMEM;
2711         }
2712
2713         /* Derive version string. */
2714         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2715         if (ql2xextended_error_logging)
2716                 strcat(qla2x00_version_str, "-debug");
2717
2718         qla2xxx_transport_template =
2719             fc_attach_transport(&qla2xxx_transport_functions);
2720         if (!qla2xxx_transport_template)
2721                 return -ENODEV;
2722
2723         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2724         ret = pci_register_driver(&qla2xxx_pci_driver);
2725         if (ret) {
2726                 kmem_cache_destroy(srb_cachep);
2727                 fc_release_transport(qla2xxx_transport_template);
2728         }
2729         return ret;
2730 }
2731
2732 /**
2733  * qla2x00_module_exit - Module cleanup.
2734  **/
2735 static void __exit
2736 qla2x00_module_exit(void)
2737 {
2738         pci_unregister_driver(&qla2xxx_pci_driver);
2739         qla2x00_release_firmware();
2740         kmem_cache_destroy(srb_cachep);
2741         fc_release_transport(qla2xxx_transport_template);
2742 }
2743
2744 module_init(qla2x00_module_init);
2745 module_exit(qla2x00_module_exit);
2746
2747 MODULE_AUTHOR("QLogic Corporation");
2748 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2749 MODULE_LICENSE("GPL");
2750 MODULE_VERSION(QLA2XXX_VERSION);
2751 MODULE_FIRMWARE(FW_FILE_ISP21XX);
2752 MODULE_FIRMWARE(FW_FILE_ISP22XX);
2753 MODULE_FIRMWARE(FW_FILE_ISP2300);
2754 MODULE_FIRMWARE(FW_FILE_ISP2322);
2755 MODULE_FIRMWARE(FW_FILE_ISP24XX);