drivers/scsi/qla2xxx/qla_os.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2008 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 #include <linux/mutex.h>
  14
  15 #include <scsi/scsi_tcq.h>
  16 #include <scsi/scsicam.h>
  17 #include <scsi/scsi_transport.h>
  18 #include <scsi/scsi_transport_fc.h>
  19
  20 /*
  21  * Driver version
  22  */
  23 char qla2x00_version_str[40];
  24
  25 /*
  26  * SRB allocation cache
  27  */
  28 static struct kmem_cache *srb_cachep;
  29
  30 int ql2xlogintimeout = 20;
  31 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
  32 MODULE_PARM_DESC(ql2xlogintimeout,
  33                 "Login timeout value in seconds.");
  34
  35 int qlport_down_retry;
  36 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
  37 MODULE_PARM_DESC(qlport_down_retry,
  38                 "Maximum number of command retries to a port that returns "
  39                 "a PORT-DOWN status.");
  40
  41 int ql2xplogiabsentdevice;
  42 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
  43 MODULE_PARM_DESC(ql2xplogiabsentdevice,
  44                 "Option to enable PLOGI to devices that are not present after "
  45                 "a Fabric scan.  This is needed for several broken switches. "
  46                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
  47
  48 int ql2xloginretrycount = 0;
  49 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
  50 MODULE_PARM_DESC(ql2xloginretrycount,
  51                 "Specify an alternate value for the NVRAM login retry count.");
  52
  53 int ql2xallocfwdump = 1;
  54 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
  55 MODULE_PARM_DESC(ql2xallocfwdump,
  56                 "Option to enable allocation of memory for a firmware dump "
  57                 "during HBA initialization.  Memory allocation requirements "
  58                 "vary by ISP type.  Default is 1 - allocate memory.");
  59
  60 int ql2xextended_error_logging;
  61 module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
  62 MODULE_PARM_DESC(ql2xextended_error_logging,
  63                 "Option to enable extended error logging, "
  64                 "Default is 0 - no logging. 1 - log errors.");
  65
  66 static void qla2x00_free_device(scsi_qla_host_t *);
  67
  68 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
  69
  70 int ql2xfdmienable=1;
  71 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
  72 MODULE_PARM_DESC(ql2xfdmienable,
  73                 "Enables FDMI registratons "
  74                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
  75
  76 #define MAX_Q_DEPTH    32
  77 static int ql2xmaxqdepth = MAX_Q_DEPTH;
  78 module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
  79 MODULE_PARM_DESC(ql2xmaxqdepth,
  80                 "Maximum queue depth to report for target devices.");
  81
  82 int ql2xqfullrampup = 120;
  83 module_param(ql2xqfullrampup, int, S_IRUGO|S_IWUSR);
  84 MODULE_PARM_DESC(ql2xqfullrampup,
  85                 "Number of seconds to wait to begin to ramp-up the queue "
  86                 "depth for a device after a queue-full condition has been "
  87                 "detected.  Default is 120 seconds.");
  88
  89 int ql2xiidmaenable=1;
  90 module_param(ql2xiidmaenable, int, S_IRUGO|S_IRUSR);
  91 MODULE_PARM_DESC(ql2xiidmaenable,
  92                 "Enables iIDMA settings "
  93                 "Default is 1 - perform iIDMA. 0 - no iIDMA.");
  94
  95 int ql2xmaxqueues = 1;
  96 module_param(ql2xmaxqueues, int, S_IRUGO|S_IRUSR);
  97 MODULE_PARM_DESC(ql2xmaxqueues,
  98                 "Enables MQ settings "
  99                 "Default is 1 for single queue. Set it to number \
 100                         of queues in MQ mode.");
 101 /*
 102  * SCSI host template entry points
 103  */
 104 static int qla2xxx_slave_configure(struct scsi_device * device);
 105 static int qla2xxx_slave_alloc(struct scsi_device *);
 106 static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
 107 static void qla2xxx_scan_start(struct Scsi_Host *);
 108 static void qla2xxx_slave_destroy(struct scsi_device *);
 109 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
 110                 void (*fn)(struct scsi_cmnd *));
 111 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
 112                 void (*fn)(struct scsi_cmnd *));
 113 static int qla2xxx_eh_abort(struct scsi_cmnd *);
 114 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 115 static int qla2xxx_eh_target_reset(struct scsi_cmnd *);
 116 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 117 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
 118
 119 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 120 static int qla2x00_change_queue_type(struct scsi_device *, int);
 121
 122 static struct scsi_host_template qla2x00_driver_template = {
 123         .module                 = THIS_MODULE,
 124         .name                   = QLA2XXX_DRIVER_NAME,
 125         .queuecommand           = qla2x00_queuecommand,
 126
 127         .eh_abort_handler       = qla2xxx_eh_abort,
 128         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 129         .eh_target_reset_handler = qla2xxx_eh_target_reset,
 130         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 131         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 132
 133         .slave_configure        = qla2xxx_slave_configure,
 134
 135         .slave_alloc            = qla2xxx_slave_alloc,
 136         .slave_destroy          = qla2xxx_slave_destroy,
 137         .scan_finished          = qla2xxx_scan_finished,
 138         .scan_start             = qla2xxx_scan_start,
 139         .change_queue_depth     = qla2x00_change_queue_depth,
 140         .change_queue_type      = qla2x00_change_queue_type,
 141         .this_id                = -1,
 142         .cmd_per_lun            = 3,
 143         .use_clustering         = ENABLE_CLUSTERING,
 144         .sg_tablesize           = SG_ALL,
 145
 146         /*
 147          * The RISC allows for each command to transfer (2^32-1) bytes of data,
 148          * which equates to 0x800000 sectors.
 149          */
 150         .max_sectors            = 0xFFFF,
 151         .shost_attrs            = qla2x00_host_attrs,
 152 };
 153
 154 struct scsi_host_template qla24xx_driver_template = {
 155         .module                 = THIS_MODULE,
 156         .name                   = QLA2XXX_DRIVER_NAME,
 157         .queuecommand           = qla24xx_queuecommand,
 158
 159         .eh_abort_handler       = qla2xxx_eh_abort,
 160         .eh_device_reset_handler = qla2xxx_eh_device_reset,
 161         .eh_target_reset_handler = qla2xxx_eh_target_reset,
 162         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
 163         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
 164
 165         .slave_configure        = qla2xxx_slave_configure,
 166
 167         .slave_alloc            = qla2xxx_slave_alloc,
 168         .slave_destroy          = qla2xxx_slave_destroy,
 169         .scan_finished          = qla2xxx_scan_finished,
 170         .scan_start             = qla2xxx_scan_start,
 171         .change_queue_depth     = qla2x00_change_queue_depth,
 172         .change_queue_type      = qla2x00_change_queue_type,
 173         .this_id                = -1,
 174         .cmd_per_lun            = 3,
 175         .use_clustering         = ENABLE_CLUSTERING,
 176         .sg_tablesize           = SG_ALL,
 177
 178         .max_sectors            = 0xFFFF,
 179         .shost_attrs            = qla2x00_host_attrs,
 180 };
 181
 182 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
 183 struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
 184
 185 /* TODO Convert to inlines
 186  *
 187  * Timer routines
 188  */
 189
 190 __inline__ void
 191 qla2x00_start_timer(scsi_qla_host_t *vha, void *func, unsigned long interval)
 192 {
 193         init_timer(&vha->timer);
 194         vha->timer.expires = jiffies + interval * HZ;
 195         vha->timer.data = (unsigned long)vha;
 196         vha->timer.function = (void (*)(unsigned long))func;
 197         add_timer(&vha->timer);
 198         vha->timer_active = 1;
 199 }
 200
 201 static inline void
 202 qla2x00_restart_timer(scsi_qla_host_t *vha, unsigned long interval)
 203 {
 204         mod_timer(&vha->timer, jiffies + interval * HZ);
 205 }
 206
 207 static __inline__ void
 208 qla2x00_stop_timer(scsi_qla_host_t *vha)
 209 {
 210         del_timer_sync(&vha->timer);
 211         vha->timer_active = 0;
 212 }
 213
 214 static int qla2x00_do_dpc(void *data);
 215
 216 static void qla2x00_rst_aen(scsi_qla_host_t *);
 217
 218 static int qla2x00_mem_alloc(struct qla_hw_data *, uint16_t, uint16_t,
 219         struct req_que **, struct rsp_que **);
 220 static void qla2x00_mem_free(struct qla_hw_data *);
 221 static void qla2x00_sp_free_dma(srb_t *);
 222
 223 /* -------------------------------------------------------------------------- */
 224 static int qla2x00_alloc_queues(struct qla_hw_data *ha)
 225 {
 226         ha->req_q_map = kzalloc(sizeof(struct req_que *) * ha->max_queues,
 227                                 GFP_KERNEL);
 228         if (!ha->req_q_map) {
 229                 qla_printk(KERN_WARNING, ha,
 230                         "Unable to allocate memory for request queue ptrs\n");
 231                 goto fail_req_map;
 232         }
 233
 234         ha->rsp_q_map = kzalloc(sizeof(struct rsp_que *) * ha->max_queues,
 235                                 GFP_KERNEL);
 236         if (!ha->rsp_q_map) {
 237                 qla_printk(KERN_WARNING, ha,
 238                         "Unable to allocate memory for response queue ptrs\n");
 239                 goto fail_rsp_map;
 240         }
 241         set_bit(0, ha->rsp_qid_map);
 242         set_bit(0, ha->req_qid_map);
 243         return 1;
 244
 245 fail_rsp_map:
 246         kfree(ha->req_q_map);
 247         ha->req_q_map = NULL;
 248 fail_req_map:
 249         return -ENOMEM;
 250 }
 251
 252 static void qla2x00_free_que(struct qla_hw_data *ha, struct req_que *req,
 253         struct rsp_que *rsp)
 254 {
 255         if (rsp && rsp->ring)
 256                 dma_free_coherent(&ha->pdev->dev,
 257                 (rsp->length + 1) * sizeof(response_t),
 258                 rsp->ring, rsp->dma);
 259
 260         kfree(rsp);
 261         rsp = NULL;
 262         if (req && req->ring)
 263                 dma_free_coherent(&ha->pdev->dev,
 264                 (req->length + 1) * sizeof(request_t),
 265                 req->ring, req->dma);
 266
 267         kfree(req);
 268         req = NULL;
 269 }
 270
 271 static void qla2x00_free_queues(struct qla_hw_data *ha)
 272 {
 273         struct req_que *req;
 274         struct rsp_que *rsp;
 275         int cnt;
 276
 277         for (cnt = 0; cnt < ha->max_queues; cnt++) {
 278                 rsp = ha->rsp_q_map[cnt];
 279                 req = ha->req_q_map[cnt];
 280                 qla2x00_free_que(ha, req, rsp);
 281         }
 282         kfree(ha->rsp_q_map);
 283         ha->rsp_q_map = NULL;
 284
 285         kfree(ha->req_q_map);
 286         ha->req_q_map = NULL;
 287 }
 288
 289 static char *
 290 qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str)
 291 {
 292         struct qla_hw_data *ha = vha->hw;
 293         static char *pci_bus_modes[] = {
 294                 "33", "66", "100", "133",
 295         };
 296         uint16_t pci_bus;
 297
 298         strcpy(str, "PCI");
 299         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
 300         if (pci_bus) {
 301                 strcat(str, "-X (");
 302                 strcat(str, pci_bus_modes[pci_bus]);
 303         } else {
 304                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
 305                 strcat(str, " (");
 306                 strcat(str, pci_bus_modes[pci_bus]);
 307         }
 308         strcat(str, " MHz)");
 309
 310         return (str);
 311 }
 312
 313 static char *
 314 qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str)
 315 {
 316         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
 317         struct qla_hw_data *ha = vha->hw;
 318         uint32_t pci_bus;
 319         int pcie_reg;
 320
 321         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 322         if (pcie_reg) {
 323                 char lwstr[6];
 324                 uint16_t pcie_lstat, lspeed, lwidth;
 325
 326                 pcie_reg += 0x12;
 327                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
 328                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
 329                 lwidth = (pcie_lstat &
 330                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
 331
 332                 strcpy(str, "PCIe (");
 333                 if (lspeed == 1)
 334                         strcat(str, "2.5GT/s ");
 335                 else if (lspeed == 2)
 336                         strcat(str, "5.0GT/s ");
 337                 else
 338                         strcat(str, "<unknown> ");
 339                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
 340                 strcat(str, lwstr);
 341
 342                 return str;
 343         }
 344
 345         strcpy(str, "PCI");
 346         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
 347         if (pci_bus == 0 || pci_bus == 8) {
 348                 strcat(str, " (");
 349                 strcat(str, pci_bus_modes[pci_bus >> 3]);
 350         } else {
 351                 strcat(str, "-X ");
 352                 if (pci_bus & BIT_2)
 353                         strcat(str, "Mode 2");
 354                 else
 355                         strcat(str, "Mode 1");
 356                 strcat(str, " (");
 357                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
 358         }
 359         strcat(str, " MHz)");
 360
 361         return str;
 362 }
 363
 364 static char *
 365 qla2x00_fw_version_str(struct scsi_qla_host *vha, char *str)
 366 {
 367         char un_str[10];
 368         struct qla_hw_data *ha = vha->hw;
 369
 370         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
 371             ha->fw_minor_version,
 372             ha->fw_subminor_version);
 373
 374         if (ha->fw_attributes & BIT_9) {
 375                 strcat(str, "FLX");
 376                 return (str);
 377         }
 378
 379         switch (ha->fw_attributes & 0xFF) {
 380         case 0x7:
 381                 strcat(str, "EF");
 382                 break;
 383         case 0x17:
 384                 strcat(str, "TP");
 385                 break;
 386         case 0x37:
 387                 strcat(str, "IP");
 388                 break;
 389         case 0x77:
 390                 strcat(str, "VI");
 391                 break;
 392         default:
 393                 sprintf(un_str, "(%x)", ha->fw_attributes);
 394                 strcat(str, un_str);
 395                 break;
 396         }
 397         if (ha->fw_attributes & 0x100)
 398                 strcat(str, "X");
 399
 400         return (str);
 401 }
 402
 403 static char *
 404 qla24xx_fw_version_str(struct scsi_qla_host *vha, char *str)
 405 {
 406         struct qla_hw_data *ha = vha->hw;
 407
 408         sprintf(str, "%d.%02d.%02d (%x)", ha->fw_major_version,
 409             ha->fw_minor_version, ha->fw_subminor_version, ha->fw_attributes);
 410         return str;
 411 }
 412
 413 static inline srb_t *
 414 qla2x00_get_new_sp(scsi_qla_host_t *vha, fc_port_t *fcport,
 415     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 416 {
 417         srb_t *sp;
 418         struct qla_hw_data *ha = vha->hw;
 419
 420         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
 421         if (!sp)
 422                 return sp;
 423
 424         sp->fcport = fcport;
 425         sp->cmd = cmd;
 426         sp->que = ha->req_q_map[0];
 427         sp->flags = 0;
 428         CMD_SP(cmd) = (void *)sp;
 429         cmd->scsi_done = done;
 430
 431         return sp;
 432 }
 433
 434 static int
 435 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 436 {
 437         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 438         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 439         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 440         struct qla_hw_data *ha = vha->hw;
 441         srb_t *sp;
 442         int rval;
 443
 444         if (unlikely(pci_channel_offline(ha->pdev))) {
 445                 cmd->result = DID_REQUEUE << 16;
 446                 goto qc_fail_command;
 447         }
 448
 449         rval = fc_remote_port_chkready(rport);
 450         if (rval) {
 451                 cmd->result = rval;
 452                 goto qc_fail_command;
 453         }
 454
 455         /* Close window on fcport/rport state-transitioning. */
 456         if (fcport->drport)
 457                 goto qc_target_busy;
 458
 459         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 460                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 461                     atomic_read(&vha->loop_state) == LOOP_DEAD) {
 462                         cmd->result = DID_NO_CONNECT << 16;
 463                         goto qc_fail_command;
 464                 }
 465                 goto qc_target_busy;
 466         }
 467
 468         spin_unlock_irq(vha->host->host_lock);
 469
 470         sp = qla2x00_get_new_sp(vha, fcport, cmd, done);
 471         if (!sp)
 472                 goto qc_host_busy_lock;
 473
 474         rval = ha->isp_ops->start_scsi(sp);
 475         if (rval != QLA_SUCCESS)
 476                 goto qc_host_busy_free_sp;
 477
 478         spin_lock_irq(vha->host->host_lock);
 479
 480         return 0;
 481
 482 qc_host_busy_free_sp:
 483         qla2x00_sp_free_dma(sp);
 484         mempool_free(sp, ha->srb_mempool);
 485
 486 qc_host_busy_lock:
 487         spin_lock_irq(vha->host->host_lock);
 488         return SCSI_MLQUEUE_HOST_BUSY;
 489
 490 qc_target_busy:
 491         return SCSI_MLQUEUE_TARGET_BUSY;
 492
 493 qc_fail_command:
 494         done(cmd);
 495
 496         return 0;
 497 }
 498
 499
 500 static int
 501 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 502 {
 503         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 504         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 505         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
 506         struct qla_hw_data *ha = vha->hw;
 507         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 508         srb_t *sp;
 509         int rval;
 510
 511         if (unlikely(pci_channel_offline(ha->pdev))) {
 512                 cmd->result = DID_REQUEUE << 16;
 513                 goto qc24_fail_command;
 514         }
 515
 516         rval = fc_remote_port_chkready(rport);
 517         if (rval) {
 518                 cmd->result = rval;
 519                 goto qc24_fail_command;
 520         }
 521
 522         /* Close window on fcport/rport state-transitioning. */
 523         if (fcport->drport)
 524                 goto qc24_target_busy;
 525
 526         if (atomic_read(&fcport->state) != FCS_ONLINE) {
 527                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
 528                     atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
 529                         cmd->result = DID_NO_CONNECT << 16;
 530                         goto qc24_fail_command;
 531                 }
 532                 goto qc24_target_busy;
 533         }
 534
 535         spin_unlock_irq(vha->host->host_lock);
 536
 537         sp = qla2x00_get_new_sp(base_vha, fcport, cmd, done);
 538         if (!sp)
 539                 goto qc24_host_busy_lock;
 540
 541         rval = ha->isp_ops->start_scsi(sp);
 542         if (rval != QLA_SUCCESS)
 543                 goto qc24_host_busy_free_sp;
 544
 545         spin_lock_irq(vha->host->host_lock);
 546
 547         return 0;
 548
 549 qc24_host_busy_free_sp:
 550         qla2x00_sp_free_dma(sp);
 551         mempool_free(sp, ha->srb_mempool);
 552
 553 qc24_host_busy_lock:
 554         spin_lock_irq(vha->host->host_lock);
 555         return SCSI_MLQUEUE_HOST_BUSY;
 556
 557 qc24_target_busy:
 558         return SCSI_MLQUEUE_TARGET_BUSY;
 559
 560 qc24_fail_command:
 561         done(cmd);
 562
 563         return 0;
 564 }
 565
 566
 567 /*
 568  * qla2x00_eh_wait_on_command
 569  *    Waits for the command to be returned by the Firmware for some
 570  *    max time.
 571  *
 572  * Input:
 573  *    cmd = Scsi Command to wait on.
 574  *
 575  * Return:
 576  *    Not Found : 0
 577  *    Found : 1
 578  */
 579 static int
 580 qla2x00_eh_wait_on_command(struct scsi_cmnd *cmd)
 581 {
 582 #define ABORT_POLLING_PERIOD    1000
 583 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
 584         unsigned long wait_iter = ABORT_WAIT_ITER;
 585         int ret = QLA_SUCCESS;
 586
 587         while (CMD_SP(cmd)) {
 588                 msleep(ABORT_POLLING_PERIOD);
 589
 590                 if (--wait_iter)
 591                         break;
 592         }
 593         if (CMD_SP(cmd))
 594                 ret = QLA_FUNCTION_FAILED;
 595
 596         return ret;
 597 }
 598
 599 /*
 600  * qla2x00_wait_for_hba_online
 601  *    Wait till the HBA is online after going through
 602  *    <= MAX_RETRIES_OF_ISP_ABORT  or
 603  *    finally HBA is disabled ie marked offline
 604  *
 605  * Input:
 606  *     ha - pointer to host adapter structure
 607  *
 608  * Note:
 609  *    Does context switching-Release SPIN_LOCK
 610  *    (if any) before calling this routine.
 611  *
 612  * Return:
 613  *    Success (Adapter is online) : 0
 614  *    Failed  (Adapter is offline/disabled) : 1
 615  */
 616 int
 617 qla2x00_wait_for_hba_online(scsi_qla_host_t *vha)
 618 {
 619         int             return_status;
 620         unsigned long   wait_online;
 621         struct qla_hw_data *ha = vha->hw;
 622         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 623
 624         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 625         while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
 626             test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
 627             test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
 628             ha->dpc_active) && time_before(jiffies, wait_online)) {
 629
 630                 msleep(1000);
 631         }
 632         if (base_vha->flags.online)
 633                 return_status = QLA_SUCCESS;
 634         else
 635                 return_status = QLA_FUNCTION_FAILED;
 636
 637         return (return_status);
 638 }
 639
 640 /*
 641  * qla2x00_wait_for_loop_ready
 642  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
 643  *    to be in LOOP_READY state.
 644  * Input:
 645  *     ha - pointer to host adapter structure
 646  *
 647  * Note:
 648  *    Does context switching-Release SPIN_LOCK
 649  *    (if any) before calling this routine.
 650  *
 651  *
 652  * Return:
 653  *    Success (LOOP_READY) : 0
 654  *    Failed  (LOOP_NOT_READY) : 1
 655  */
 656 static inline int
 657 qla2x00_wait_for_loop_ready(scsi_qla_host_t *vha)
 658 {
 659         int      return_status = QLA_SUCCESS;
 660         unsigned long loop_timeout ;
 661         struct qla_hw_data *ha = vha->hw;
 662         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 663
 664         /* wait for 5 min at the max for loop to be ready */
 665         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
 666
 667         while ((!atomic_read(&base_vha->loop_down_timer) &&
 668             atomic_read(&base_vha->loop_state) == LOOP_DOWN) ||
 669             atomic_read(&base_vha->loop_state) != LOOP_READY) {
 670                 if (atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
 671                         return_status = QLA_FUNCTION_FAILED;
 672                         break;
 673                 }
 674                 msleep(1000);
 675                 if (time_after_eq(jiffies, loop_timeout)) {
 676                         return_status = QLA_FUNCTION_FAILED;
 677                         break;
 678                 }
 679         }
 680         return (return_status);
 681 }
 682
 683 void
 684 qla2x00_abort_fcport_cmds(fc_port_t *fcport)
 685 {
 686         int cnt, que, id;
 687         unsigned long flags;
 688         srb_t *sp;
 689         scsi_qla_host_t *vha = fcport->vha;
 690         struct qla_hw_data *ha = vha->hw;
 691         struct req_que *req;
 692
 693         spin_lock_irqsave(&ha->hardware_lock, flags);
 694         for (que = 0; que < QLA_MAX_HOST_QUES; que++) {
 695                 id = vha->req_ques[que];
 696                 req = ha->req_q_map[id];
 697                 if (!req)
 698                         continue;
 699                 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 700                         sp = req->outstanding_cmds[cnt];
 701                         if (!sp)
 702                                 continue;
 703                         if (sp->fcport != fcport)
 704                                 continue;
 705
 706                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 707                         if (ha->isp_ops->abort_command(vha, sp, req)) {
 708                                 DEBUG2(qla_printk(KERN_WARNING, ha,
 709                                 "Abort failed --  %lx\n",
 710                                 sp->cmd->serial_number));
 711                         } else {
 712                                 if (qla2x00_eh_wait_on_command(sp->cmd) !=
 713                                         QLA_SUCCESS)
 714                                         DEBUG2(qla_printk(KERN_WARNING, ha,
 715                                         "Abort failed while waiting --  %lx\n",
 716                                         sp->cmd->serial_number));
 717                         }
 718                         spin_lock_irqsave(&ha->hardware_lock, flags);
 719                 }
 720         }
 721         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 722 }
 723
 724 static void
 725 qla2x00_block_error_handler(struct scsi_cmnd *cmnd)
 726 {
 727         struct Scsi_Host *shost = cmnd->device->host;
 728         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 729         unsigned long flags;
 730
 731         spin_lock_irqsave(shost->host_lock, flags);
 732         while (rport->port_state == FC_PORTSTATE_BLOCKED) {
 733                 spin_unlock_irqrestore(shost->host_lock, flags);
 734                 msleep(1000);
 735                 spin_lock_irqsave(shost->host_lock, flags);
 736         }
 737         spin_unlock_irqrestore(shost->host_lock, flags);
 738         return;
 739 }
 740
 741 /**************************************************************************
 742 * qla2xxx_eh_abort
 743 *
 744 * Description:
 745 *    The abort function will abort the specified command.
 746 *
 747 * Input:
 748 *    cmd = Linux SCSI command packet to be aborted.
 749 *
 750 * Returns:
 751 *    Either SUCCESS or FAILED.
 752 *
 753 * Note:
 754 *    Only return FAILED if command not returned by firmware.
 755 **************************************************************************/
 756 static int
 757 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 758 {
 759         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 760         srb_t *sp;
 761         int ret, i;
 762         unsigned int id, lun;
 763         unsigned long serial;
 764         unsigned long flags;
 765         int wait = 0;
 766         struct qla_hw_data *ha = vha->hw;
 767         struct req_que *req;
 768         srb_t *spt;
 769
 770         qla2x00_block_error_handler(cmd);
 771
 772         if (!CMD_SP(cmd))
 773                 return SUCCESS;
 774
 775         ret = SUCCESS;
 776
 777         id = cmd->device->id;
 778         lun = cmd->device->lun;
 779         serial = cmd->serial_number;
 780         spt = (srb_t *) CMD_SP(cmd);
 781         if (!spt)
 782                 return SUCCESS;
 783         req = spt->que;
 784
 785         /* Check active list for command command. */
 786         spin_lock_irqsave(&ha->hardware_lock, flags);
 787         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
 788                 sp = req->outstanding_cmds[i];
 789
 790                 if (sp == NULL)
 791                         continue;
 792
 793                 if (sp->cmd != cmd)
 794                         continue;
 795
 796                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC."
 797                 " pid=%ld.\n", __func__, vha->host_no, sp, serial));
 798
 799                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 800                 if (ha->isp_ops->abort_command(vha, sp, req)) {
 801                         DEBUG2(printk("%s(%ld): abort_command "
 802                         "mbx failed.\n", __func__, vha->host_no));
 803                         ret = FAILED;
 804                 } else {
 805                         DEBUG3(printk("%s(%ld): abort_command "
 806                         "mbx success.\n", __func__, vha->host_no));
 807                         wait = 1;
 808                 }
 809                 spin_lock_irqsave(&ha->hardware_lock, flags);
 810                 break;
 811         }
 812         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 813
 814         /* Wait for the command to be returned. */
 815         if (wait) {
 816                 if (qla2x00_eh_wait_on_command(cmd) != QLA_SUCCESS) {
 817                         qla_printk(KERN_ERR, ha,
 818                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
 819                             "%x.\n", vha->host_no, id, lun, serial, ret);
 820                         ret = FAILED;
 821                 }
 822         }
 823
 824         qla_printk(KERN_INFO, ha,
 825             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
 826             vha->host_no, id, lun, wait, serial, ret);
 827
 828         return ret;
 829 }
 830
 831 enum nexus_wait_type {
 832         WAIT_HOST = 0,
 833         WAIT_TARGET,
 834         WAIT_LUN,
 835 };
 836
 837 static int
 838 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t,
 839         unsigned int l, srb_t *sp, enum nexus_wait_type type)
 840 {
 841         int cnt, match, status;
 842         unsigned long flags;
 843         struct qla_hw_data *ha = vha->hw;
 844         struct req_que *req;
 845
 846         status = QLA_SUCCESS;
 847         if (!sp)
 848                 return status;
 849
 850         spin_lock_irqsave(&ha->hardware_lock, flags);
 851         req = sp->que;
 852         for (cnt = 1; status == QLA_SUCCESS &&
 853                 cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
 854                 sp = req->outstanding_cmds[cnt];
 855                 if (!sp)
 856                         continue;
 857
 858                 if (vha->vp_idx != sp->fcport->vha->vp_idx)
 859                         continue;
 860                 match = 0;
 861                 switch (type) {
 862                 case WAIT_HOST:
 863                         match = 1;
 864                         break;
 865                 case WAIT_TARGET:
 866                         match = sp->cmd->device->id == t;
 867                         break;
 868                 case WAIT_LUN:
 869                         match = (sp->cmd->device->id == t &&
 870                                 sp->cmd->device->lun == l);
 871                         break;
 872                 }
 873                 if (!match)
 874                         continue;
 875
 876                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 877                 status = qla2x00_eh_wait_on_command(sp->cmd);
 878                 spin_lock_irqsave(&ha->hardware_lock, flags);
 879         }
 880         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 881
 882         return status;
 883 }
 884
 885 static char *reset_errors[] = {
 886         "HBA not online",
 887         "HBA not ready",
 888         "Task management failed",
 889         "Waiting for command completions",
 890 };
 891
 892 static int
 893 __qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
 894     struct scsi_cmnd *cmd, int (*do_reset)(struct fc_port *, unsigned int))
 895 {
 896         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 897         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 898         int err;
 899
 900         qla2x00_block_error_handler(cmd);
 901
 902         if (!fcport)
 903                 return FAILED;
 904
 905         qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET ISSUED.\n",
 906             vha->host_no, cmd->device->id, cmd->device->lun, name);
 907
 908         err = 0;
 909         if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
 910                 goto eh_reset_failed;
 911         err = 1;
 912         if (qla2x00_wait_for_loop_ready(vha) != QLA_SUCCESS)
 913                 goto eh_reset_failed;
 914         err = 2;
 915         if (do_reset(fcport, cmd->device->lun) != QLA_SUCCESS)
 916                 goto eh_reset_failed;
 917         err = 3;
 918         if (qla2x00_eh_wait_for_pending_commands(vha, cmd->device->id,
 919             cmd->device->lun, (srb_t *) CMD_SP(cmd), type) != QLA_SUCCESS)
 920                 goto eh_reset_failed;
 921
 922         qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET SUCCEEDED.\n",
 923             vha->host_no, cmd->device->id, cmd->device->lun, name);
 924
 925         return SUCCESS;
 926
 927  eh_reset_failed:
 928         qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET FAILED: %s.\n"
 929             , vha->host_no, cmd->device->id, cmd->device->lun, name,
 930             reset_errors[err]);
 931         return FAILED;
 932 }
 933
 934 static int
 935 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 936 {
 937         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 938         struct qla_hw_data *ha = vha->hw;
 939
 940         return __qla2xxx_eh_generic_reset("DEVICE", WAIT_LUN, cmd,
 941             ha->isp_ops->lun_reset);
 942 }
 943
 944 static int
 945 qla2xxx_eh_target_reset(struct scsi_cmnd *cmd)
 946 {
 947         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 948         struct qla_hw_data *ha = vha->hw;
 949
 950         return __qla2xxx_eh_generic_reset("TARGET", WAIT_TARGET, cmd,
 951             ha->isp_ops->target_reset);
 952 }
 953
 954 /**************************************************************************
 955 * qla2xxx_eh_bus_reset
 956 *
 957 * Description:
 958 *    The bus reset function will reset the bus and abort any executing
 959 *    commands.
 960 *
 961 * Input:
 962 *    cmd = Linux SCSI command packet of the command that cause the
 963 *          bus reset.
 964 *
 965 * Returns:
 966 *    SUCCESS/FAILURE (defined as macro in scsi.h).
 967 *
 968 **************************************************************************/
 969 static int
 970 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 971 {
 972         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
 973         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
 974         int ret = FAILED;
 975         unsigned int id, lun;
 976         unsigned long serial;
 977         srb_t *sp = (srb_t *) CMD_SP(cmd);
 978
 979         qla2x00_block_error_handler(cmd);
 980
 981         id = cmd->device->id;
 982         lun = cmd->device->lun;
 983         serial = cmd->serial_number;
 984
 985         if (!fcport)
 986                 return ret;
 987
 988         qla_printk(KERN_INFO, vha->hw,
 989             "scsi(%ld:%d:%d): BUS RESET ISSUED.\n", vha->host_no, id, lun);
 990
 991         if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) {
 992                 DEBUG2(printk("%s failed:board disabled\n",__func__));
 993                 goto eh_bus_reset_done;
 994         }
 995
 996         if (qla2x00_wait_for_loop_ready(vha) == QLA_SUCCESS) {
 997                 if (qla2x00_loop_reset(vha) == QLA_SUCCESS)
 998                         ret = SUCCESS;
 999         }
1000         if (ret == FAILED)
1001                 goto eh_bus_reset_done;
1002
1003         /* Flush outstanding commands. */
1004         if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, sp, WAIT_HOST) !=
1005             QLA_SUCCESS)
1006                 ret = FAILED;
1007
1008 eh_bus_reset_done:
1009         qla_printk(KERN_INFO, vha->hw, "%s: reset %s\n", __func__,
1010             (ret == FAILED) ? "failed" : "succeded");
1011
1012         return ret;
1013 }
1014
1015 /**************************************************************************
1016 * qla2xxx_eh_host_reset
1017 *
1018 * Description:
1019 *    The reset function will reset the Adapter.
1020 *
1021 * Input:
1022 *      cmd = Linux SCSI command packet of the command that cause the
1023 *            adapter reset.
1024 *
1025 * Returns:
1026 *      Either SUCCESS or FAILED.
1027 *
1028 * Note:
1029 **************************************************************************/
1030 static int
1031 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
1032 {
1033         scsi_qla_host_t *vha = shost_priv(cmd->device->host);
1034         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
1035         struct qla_hw_data *ha = vha->hw;
1036         int ret = FAILED;
1037         unsigned int id, lun;
1038         unsigned long serial;
1039         srb_t *sp = (srb_t *) CMD_SP(cmd);
1040         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1041
1042         qla2x00_block_error_handler(cmd);
1043
1044         id = cmd->device->id;
1045         lun = cmd->device->lun;
1046         serial = cmd->serial_number;
1047
1048         if (!fcport)
1049                 return ret;
1050
1051         qla_printk(KERN_INFO, ha,
1052             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", vha->host_no, id, lun);
1053
1054         if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
1055                 goto eh_host_reset_lock;
1056
1057         /*
1058          * Fixme-may be dpc thread is active and processing
1059          * loop_resync,so wait a while for it to
1060          * be completed and then issue big hammer.Otherwise
1061          * it may cause I/O failure as big hammer marks the
1062          * devices as lost kicking of the port_down_timer
1063          * while dpc is stuck for the mailbox to complete.
1064          */
1065         qla2x00_wait_for_loop_ready(vha);
1066         if (vha != base_vha) {
1067                 if (qla2x00_vp_abort_isp(vha))
1068                         goto eh_host_reset_lock;
1069         } else {
1070                 set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
1071                 if (qla2x00_abort_isp(base_vha)) {
1072                         clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
1073                         /* failed. schedule dpc to try */
1074                         set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
1075
1076                         if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
1077                                 goto eh_host_reset_lock;
1078                 }
1079                 clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
1080         }
1081
1082         /* Waiting for command to be returned to OS.*/
1083         if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, sp, WAIT_HOST) ==
1084                 QLA_SUCCESS)
1085                 ret = SUCCESS;
1086
1087 eh_host_reset_lock:
1088         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
1089             (ret == FAILED) ? "failed" : "succeded");
1090
1091         return ret;
1092 }
1093
1094 /*
1095 * qla2x00_loop_reset
1096 *      Issue loop reset.
1097 *
1098 * Input:
1099 *      ha = adapter block pointer.
1100 *
1101 * Returns:
1102 *      0 = success
1103 */
1104 int
1105 qla2x00_loop_reset(scsi_qla_host_t *vha)
1106 {
1107         int ret;
1108         struct fc_port *fcport;
1109         struct qla_hw_data *ha = vha->hw;
1110
1111         if (ha->flags.enable_lip_full_login && !vha->vp_idx) {
1112                 ret = qla2x00_full_login_lip(vha);
1113                 if (ret != QLA_SUCCESS) {
1114                         DEBUG2_3(printk("%s(%ld): failed: "
1115                             "full_login_lip=%d.\n", __func__, vha->host_no,
1116                             ret));
1117                 }
1118                 atomic_set(&vha->loop_state, LOOP_DOWN);
1119                 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
1120                 qla2x00_mark_all_devices_lost(vha, 0);
1121                 qla2x00_wait_for_loop_ready(vha);
1122         }
1123
1124         if (ha->flags.enable_lip_reset && !vha->vp_idx) {
1125                 ret = qla2x00_lip_reset(vha);
1126                 if (ret != QLA_SUCCESS) {
1127                         DEBUG2_3(printk("%s(%ld): failed: "
1128                             "lip_reset=%d.\n", __func__, vha->host_no, ret));
1129                 } else
1130                         qla2x00_wait_for_loop_ready(vha);
1131         }
1132
1133         if (ha->flags.enable_target_reset) {
1134                 list_for_each_entry(fcport, &vha->vp_fcports, list) {
1135                         if (fcport->port_type != FCT_TARGET)
1136                                 continue;
1137
1138                         ret = ha->isp_ops->target_reset(fcport, 0);
1139                         if (ret != QLA_SUCCESS) {
1140                                 DEBUG2_3(printk("%s(%ld): bus_reset failed: "
1141                                     "target_reset=%d d_id=%x.\n", __func__,
1142                                     vha->host_no, ret, fcport->d_id.b24));
1143                         }
1144                 }
1145         }
1146         /* Issue marker command only when we are going to start the I/O */
1147         vha->marker_needed = 1;
1148
1149         return QLA_SUCCESS;
1150 }
1151
1152 void
1153 qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
1154 {
1155         int que, cnt;
1156         unsigned long flags;
1157         srb_t *sp;
1158         struct qla_hw_data *ha = vha->hw;
1159         struct req_que *req;
1160
1161         spin_lock_irqsave(&ha->hardware_lock, flags);
1162         for (que = 0; que < ha->max_queues; que++) {
1163                 req = ha->req_q_map[que];
1164                 if (!req)
1165                         continue;
1166                 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
1167                         sp = req->outstanding_cmds[cnt];
1168                         if (sp && sp->fcport->vha == vha) {
1169                                 req->outstanding_cmds[cnt] = NULL;
1170                                 sp->cmd->result = res;
1171                                 qla2x00_sp_compl(ha, sp);
1172                         }
1173                 }
1174         }
1175         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1176 }
1177
1178 static int
1179 qla2xxx_slave_alloc(struct scsi_device *sdev)
1180 {
1181         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1182
1183         if (!rport || fc_remote_port_chkready(rport))
1184                 return -ENXIO;
1185
1186         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1187
1188         return 0;
1189 }
1190
1191 static int
1192 qla2xxx_slave_configure(struct scsi_device *sdev)
1193 {
1194         scsi_qla_host_t *vha = shost_priv(sdev->host);
1195         struct qla_hw_data *ha = vha->hw;
1196         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1197         struct req_que *req = ha->req_q_map[vha->req_ques[0]];
1198
1199         if (sdev->tagged_supported)
1200                 scsi_activate_tcq(sdev, req->max_q_depth);
1201         else
1202                 scsi_deactivate_tcq(sdev, req->max_q_depth);
1203
1204         rport->dev_loss_tmo = ha->port_down_retry_count;
1205
1206         return 0;
1207 }
1208
1209 static void
1210 qla2xxx_slave_destroy(struct scsi_device *sdev)
1211 {
1212         sdev->hostdata = NULL;
1213 }
1214
1215 static int
1216 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1217 {
1218         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1219         return sdev->queue_depth;
1220 }
1221
1222 static int
1223 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1224 {
1225         if (sdev->tagged_supported) {
1226                 scsi_set_tag_type(sdev, tag_type);
1227                 if (tag_type)
1228                         scsi_activate_tcq(sdev, sdev->queue_depth);
1229                 else
1230                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1231         } else
1232                 tag_type = 0;
1233
1234         return tag_type;
1235 }
1236
1237 /**
1238  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1239  * @ha: HA context
1240  *
1241  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1242  * supported addressing method.
1243  */
1244 static void
1245 qla2x00_config_dma_addressing(scsi_qla_host_t *vha)
1246 {
1247         struct qla_hw_data *ha = vha->hw;
1248         /* Assume a 32bit DMA mask. */
1249         ha->flags.enable_64bit_addressing = 0;
1250
1251         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1252                 /* Any upper-dword bits set? */
1253                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1254                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1255                         /* Ok, a 64bit DMA mask is applicable. */
1256                         ha->flags.enable_64bit_addressing = 1;
1257                         ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
1258                         ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
1259                         return;
1260                 }
1261         }
1262
1263         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1264         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1265 }
1266
1267 static void
1268 qla2x00_enable_intrs(struct qla_hw_data *ha)
1269 {
1270         unsigned long flags = 0;
1271         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1272
1273         spin_lock_irqsave(&ha->hardware_lock, flags);
1274         ha->interrupts_on = 1;
1275         /* enable risc and host interrupts */
1276         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1277         RD_REG_WORD(&reg->ictrl);
1278         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1279
1280 }
1281
1282 static void
1283 qla2x00_disable_intrs(struct qla_hw_data *ha)
1284 {
1285         unsigned long flags = 0;
1286         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1287
1288         spin_lock_irqsave(&ha->hardware_lock, flags);
1289         ha->interrupts_on = 0;
1290         /* disable risc and host interrupts */
1291         WRT_REG_WORD(&reg->ictrl, 0);
1292         RD_REG_WORD(&reg->ictrl);
1293         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1294 }
1295
1296 static void
1297 qla24xx_enable_intrs(struct qla_hw_data *ha)
1298 {
1299         unsigned long flags = 0;
1300         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1301
1302         spin_lock_irqsave(&ha->hardware_lock, flags);
1303         ha->interrupts_on = 1;
1304         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1305         RD_REG_DWORD(&reg->ictrl);
1306         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1307 }
1308
1309 static void
1310 qla24xx_disable_intrs(struct qla_hw_data *ha)
1311 {
1312         unsigned long flags = 0;
1313         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1314
1315         if (IS_NOPOLLING_TYPE(ha))
1316                 return;
1317         spin_lock_irqsave(&ha->hardware_lock, flags);
1318         ha->interrupts_on = 0;
1319         WRT_REG_DWORD(&reg->ictrl, 0);
1320         RD_REG_DWORD(&reg->ictrl);
1321         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1322 }
1323
1324 static struct isp_operations qla2100_isp_ops = {
1325         .pci_config             = qla2100_pci_config,
1326         .reset_chip             = qla2x00_reset_chip,
1327         .chip_diag              = qla2x00_chip_diag,
1328         .config_rings           = qla2x00_config_rings,
1329         .reset_adapter          = qla2x00_reset_adapter,
1330         .nvram_config           = qla2x00_nvram_config,
1331         .update_fw_options      = qla2x00_update_fw_options,
1332         .load_risc              = qla2x00_load_risc,
1333         .pci_info_str           = qla2x00_pci_info_str,
1334         .fw_version_str         = qla2x00_fw_version_str,
1335         .intr_handler           = qla2100_intr_handler,
1336         .enable_intrs           = qla2x00_enable_intrs,
1337         .disable_intrs          = qla2x00_disable_intrs,
1338         .abort_command          = qla2x00_abort_command,
1339         .target_reset           = qla2x00_abort_target,
1340         .lun_reset              = qla2x00_lun_reset,
1341         .fabric_login           = qla2x00_login_fabric,
1342         .fabric_logout          = qla2x00_fabric_logout,
1343         .calc_req_entries       = qla2x00_calc_iocbs_32,
1344         .build_iocbs            = qla2x00_build_scsi_iocbs_32,
1345         .prep_ms_iocb           = qla2x00_prep_ms_iocb,
1346         .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
1347         .read_nvram             = qla2x00_read_nvram_data,
1348         .write_nvram            = qla2x00_write_nvram_data,
1349         .fw_dump                = qla2100_fw_dump,
1350         .beacon_on              = NULL,
1351         .beacon_off             = NULL,
1352         .beacon_blink           = NULL,
1353         .read_optrom            = qla2x00_read_optrom_data,
1354         .write_optrom           = qla2x00_write_optrom_data,
1355         .get_flash_version      = qla2x00_get_flash_version,
1356         .start_scsi             = qla2x00_start_scsi,
1357         .wrt_req_reg            = NULL,
1358         .wrt_rsp_reg            = NULL,
1359         .rd_req_reg             = NULL,
1360 };
1361
1362 static struct isp_operations qla2300_isp_ops = {
1363         .pci_config             = qla2300_pci_config,
1364         .reset_chip             = qla2x00_reset_chip,
1365         .chip_diag              = qla2x00_chip_diag,
1366         .config_rings           = qla2x00_config_rings,
1367         .reset_adapter          = qla2x00_reset_adapter,
1368         .nvram_config           = qla2x00_nvram_config,
1369         .update_fw_options      = qla2x00_update_fw_options,
1370         .load_risc              = qla2x00_load_risc,
1371         .pci_info_str           = qla2x00_pci_info_str,
1372         .fw_version_str         = qla2x00_fw_version_str,
1373         .intr_handler           = qla2300_intr_handler,
1374         .enable_intrs           = qla2x00_enable_intrs,
1375         .disable_intrs          = qla2x00_disable_intrs,
1376         .abort_command          = qla2x00_abort_command,
1377         .target_reset           = qla2x00_abort_target,
1378         .lun_reset              = qla2x00_lun_reset,
1379         .fabric_login           = qla2x00_login_fabric,
1380         .fabric_logout          = qla2x00_fabric_logout,
1381         .calc_req_entries       = qla2x00_calc_iocbs_32,
1382         .build_iocbs            = qla2x00_build_scsi_iocbs_32,
1383         .prep_ms_iocb           = qla2x00_prep_ms_iocb,
1384         .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
1385         .read_nvram             = qla2x00_read_nvram_data,
1386         .write_nvram            = qla2x00_write_nvram_data,
1387         .fw_dump                = qla2300_fw_dump,
1388         .beacon_on              = qla2x00_beacon_on,
1389         .beacon_off             = qla2x00_beacon_off,
1390         .beacon_blink           = qla2x00_beacon_blink,
1391         .read_optrom            = qla2x00_read_optrom_data,
1392         .write_optrom           = qla2x00_write_optrom_data,
1393         .get_flash_version      = qla2x00_get_flash_version,
1394         .start_scsi             = qla2x00_start_scsi,
1395         .wrt_req_reg            = NULL,
1396         .wrt_rsp_reg            = NULL,
1397         .rd_req_reg             = NULL,
1398 };
1399
1400 static struct isp_operations qla24xx_isp_ops = {
1401         .pci_config             = qla24xx_pci_config,
1402         .reset_chip             = qla24xx_reset_chip,
1403         .chip_diag              = qla24xx_chip_diag,
1404         .config_rings           = qla24xx_config_rings,
1405         .reset_adapter          = qla24xx_reset_adapter,
1406         .nvram_config           = qla24xx_nvram_config,
1407         .update_fw_options      = qla24xx_update_fw_options,
1408         .load_risc              = qla24xx_load_risc,
1409         .pci_info_str           = qla24xx_pci_info_str,
1410         .fw_version_str         = qla24xx_fw_version_str,
1411         .intr_handler           = qla24xx_intr_handler,
1412         .enable_intrs           = qla24xx_enable_intrs,
1413         .disable_intrs          = qla24xx_disable_intrs,
1414         .abort_command          = qla24xx_abort_command,
1415         .target_reset           = qla24xx_abort_target,
1416         .lun_reset              = qla24xx_lun_reset,
1417         .fabric_login           = qla24xx_login_fabric,
1418         .fabric_logout          = qla24xx_fabric_logout,
1419         .calc_req_entries       = NULL,
1420         .build_iocbs            = NULL,
1421         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1422         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1423         .read_nvram             = qla24xx_read_nvram_data,
1424         .write_nvram            = qla24xx_write_nvram_data,
1425         .fw_dump                = qla24xx_fw_dump,
1426         .beacon_on              = qla24xx_beacon_on,
1427         .beacon_off             = qla24xx_beacon_off,
1428         .beacon_blink           = qla24xx_beacon_blink,
1429         .read_optrom            = qla24xx_read_optrom_data,
1430         .write_optrom           = qla24xx_write_optrom_data,
1431         .get_flash_version      = qla24xx_get_flash_version,
1432         .start_scsi             = qla24xx_start_scsi,
1433         .wrt_req_reg            = qla24xx_wrt_req_reg,
1434         .wrt_rsp_reg            = qla24xx_wrt_rsp_reg,
1435         .rd_req_reg             = qla24xx_rd_req_reg,
1436 };
1437
1438 static struct isp_operations qla25xx_isp_ops = {
1439         .pci_config             = qla25xx_pci_config,
1440         .reset_chip             = qla24xx_reset_chip,
1441         .chip_diag              = qla24xx_chip_diag,
1442         .config_rings           = qla24xx_config_rings,
1443         .reset_adapter          = qla24xx_reset_adapter,
1444         .nvram_config           = qla24xx_nvram_config,
1445         .update_fw_options      = qla24xx_update_fw_options,
1446         .load_risc              = qla24xx_load_risc,
1447         .pci_info_str           = qla24xx_pci_info_str,
1448         .fw_version_str         = qla24xx_fw_version_str,
1449         .intr_handler           = qla24xx_intr_handler,
1450         .enable_intrs           = qla24xx_enable_intrs,
1451         .disable_intrs          = qla24xx_disable_intrs,
1452         .abort_command          = qla24xx_abort_command,
1453         .target_reset           = qla24xx_abort_target,
1454         .lun_reset              = qla24xx_lun_reset,
1455         .fabric_login           = qla24xx_login_fabric,
1456         .fabric_logout          = qla24xx_fabric_logout,
1457         .calc_req_entries       = NULL,
1458         .build_iocbs            = NULL,
1459         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1460         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1461         .read_nvram             = qla25xx_read_nvram_data,
1462         .write_nvram            = qla25xx_write_nvram_data,
1463         .fw_dump                = qla25xx_fw_dump,
1464         .beacon_on              = qla24xx_beacon_on,
1465         .beacon_off             = qla24xx_beacon_off,
1466         .beacon_blink           = qla24xx_beacon_blink,
1467         .read_optrom            = qla25xx_read_optrom_data,
1468         .write_optrom           = qla24xx_write_optrom_data,
1469         .get_flash_version      = qla24xx_get_flash_version,
1470         .start_scsi             = qla24xx_start_scsi,
1471         .wrt_req_reg            = qla24xx_wrt_req_reg,
1472         .wrt_rsp_reg            = qla24xx_wrt_rsp_reg,
1473         .rd_req_reg             = qla24xx_rd_req_reg,
1474 };
1475
1476 static struct isp_operations qla81xx_isp_ops = {
1477         .pci_config             = qla25xx_pci_config,
1478         .reset_chip             = qla24xx_reset_chip,
1479         .chip_diag              = qla24xx_chip_diag,
1480         .config_rings           = qla24xx_config_rings,
1481         .reset_adapter          = qla24xx_reset_adapter,
1482         .nvram_config           = qla81xx_nvram_config,
1483         .update_fw_options      = qla81xx_update_fw_options,
1484         .load_risc              = qla81xx_load_risc,
1485         .pci_info_str           = qla24xx_pci_info_str,
1486         .fw_version_str         = qla24xx_fw_version_str,
1487         .intr_handler           = qla24xx_intr_handler,
1488         .enable_intrs           = qla24xx_enable_intrs,
1489         .disable_intrs          = qla24xx_disable_intrs,
1490         .abort_command          = qla24xx_abort_command,
1491         .target_reset           = qla24xx_abort_target,
1492         .lun_reset              = qla24xx_lun_reset,
1493         .fabric_login           = qla24xx_login_fabric,
1494         .fabric_logout          = qla24xx_fabric_logout,
1495         .calc_req_entries       = NULL,
1496         .build_iocbs            = NULL,
1497         .prep_ms_iocb           = qla24xx_prep_ms_iocb,
1498         .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
1499         .read_nvram             = qla25xx_read_nvram_data,
1500         .write_nvram            = qla25xx_write_nvram_data,
1501         .fw_dump                = qla81xx_fw_dump,
1502         .beacon_on              = qla24xx_beacon_on,
1503         .beacon_off             = qla24xx_beacon_off,
1504         .beacon_blink           = qla24xx_beacon_blink,
1505         .read_optrom            = qla25xx_read_optrom_data,
1506         .write_optrom           = qla24xx_write_optrom_data,
1507         .get_flash_version      = qla24xx_get_flash_version,
1508         .start_scsi             = qla24xx_start_scsi,
1509         .wrt_req_reg            = qla24xx_wrt_req_reg,
1510         .wrt_rsp_reg            = qla24xx_wrt_rsp_reg,
1511         .rd_req_reg             = qla24xx_rd_req_reg,
1512 };
1513
1514 static inline void
1515 qla2x00_set_isp_flags(struct qla_hw_data *ha)
1516 {
1517         ha->device_type = DT_EXTENDED_IDS;
1518         switch (ha->pdev->device) {
1519         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1520                 ha->device_type |= DT_ISP2100;
1521                 ha->device_type &= ~DT_EXTENDED_IDS;
1522                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1523                 break;
1524         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1525                 ha->device_type |= DT_ISP2200;
1526                 ha->device_type &= ~DT_EXTENDED_IDS;
1527                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1528                 break;
1529         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1530                 ha->device_type |= DT_ISP2300;
1531                 ha->device_type |= DT_ZIO_SUPPORTED;
1532                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1533                 break;
1534         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1535                 ha->device_type |= DT_ISP2312;
1536                 ha->device_type |= DT_ZIO_SUPPORTED;
1537                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1538                 break;
1539         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1540                 ha->device_type |= DT_ISP2322;
1541                 ha->device_type |= DT_ZIO_SUPPORTED;
1542                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1543                     ha->pdev->subsystem_device == 0x0170)
1544                         ha->device_type |= DT_OEM_001;
1545                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1546                 break;
1547         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1548                 ha->device_type |= DT_ISP6312;
1549                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1550                 break;
1551         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1552                 ha->device_type |= DT_ISP6322;
1553                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1554                 break;
1555         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1556                 ha->device_type |= DT_ISP2422;
1557                 ha->device_type |= DT_ZIO_SUPPORTED;
1558                 ha->device_type |= DT_FWI2;
1559                 ha->device_type |= DT_IIDMA;
1560                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1561                 break;
1562         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1563                 ha->device_type |= DT_ISP2432;
1564                 ha->device_type |= DT_ZIO_SUPPORTED;
1565                 ha->device_type |= DT_FWI2;
1566                 ha->device_type |= DT_IIDMA;
1567                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1568                 break;
1569         case PCI_DEVICE_ID_QLOGIC_ISP8432:
1570                 ha->device_type |= DT_ISP8432;
1571                 ha->device_type |= DT_ZIO_SUPPORTED;
1572                 ha->device_type |= DT_FWI2;
1573                 ha->device_type |= DT_IIDMA;
1574                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1575                 break;
1576         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1577                 ha->device_type |= DT_ISP5422;
1578                 ha->device_type |= DT_FWI2;
1579                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1580                 break;
1581         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1582                 ha->device_type |= DT_ISP5432;
1583                 ha->device_type |= DT_FWI2;
1584                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1585                 break;
1586         case PCI_DEVICE_ID_QLOGIC_ISP2532:
1587                 ha->device_type |= DT_ISP2532;
1588                 ha->device_type |= DT_ZIO_SUPPORTED;
1589                 ha->device_type |= DT_FWI2;
1590                 ha->device_type |= DT_IIDMA;
1591                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1592                 break;
1593         case PCI_DEVICE_ID_QLOGIC_ISP8001:
1594                 ha->device_type |= DT_ISP8001;
1595                 ha->device_type |= DT_ZIO_SUPPORTED;
1596                 ha->device_type |= DT_FWI2;
1597                 ha->device_type |= DT_IIDMA;
1598                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1599                 break;
1600         }
1601 }
1602
1603 static int
1604 qla2x00_iospace_config(struct qla_hw_data *ha)
1605 {
1606         resource_size_t pio;
1607         uint16_t msix;
1608
1609         if (pci_request_selected_regions(ha->pdev, ha->bars,
1610             QLA2XXX_DRIVER_NAME)) {
1611                 qla_printk(KERN_WARNING, ha,
1612                     "Failed to reserve PIO/MMIO regions (%s)\n",
1613                     pci_name(ha->pdev));
1614
1615                 goto iospace_error_exit;
1616         }
1617         if (!(ha->bars & 1))
1618                 goto skip_pio;
1619
1620         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1621         pio = pci_resource_start(ha->pdev, 0);
1622         if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
1623                 if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
1624                         qla_printk(KERN_WARNING, ha,
1625                             "Invalid PCI I/O region size (%s)...\n",
1626                                 pci_name(ha->pdev));
1627                         pio = 0;
1628                 }
1629         } else {
1630                 qla_printk(KERN_WARNING, ha,
1631                     "region #0 not a PIO resource (%s)...\n",
1632                     pci_name(ha->pdev));
1633                 pio = 0;
1634         }
1635         ha->pio_address = pio;
1636
1637 skip_pio:
1638         /* Use MMIO operations for all accesses. */
1639         if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
1640                 qla_printk(KERN_ERR, ha,
1641                     "region #1 not an MMIO resource (%s), aborting\n",
1642                     pci_name(ha->pdev));
1643                 goto iospace_error_exit;
1644         }
1645         if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
1646                 qla_printk(KERN_ERR, ha,
1647                     "Invalid PCI mem region size (%s), aborting\n",
1648                         pci_name(ha->pdev));
1649                 goto iospace_error_exit;
1650         }
1651
1652         ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), MIN_IOBASE_LEN);
1653         if (!ha->iobase) {
1654                 qla_printk(KERN_ERR, ha,
1655                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1656
1657                 goto iospace_error_exit;
1658         }
1659
1660         /* Determine queue resources */
1661         ha->max_queues = 1;
1662         if (ql2xmaxqueues <= 1 || (!IS_QLA25XX(ha) && !IS_QLA81XX(ha)))
1663                 goto mqiobase_exit;
1664         ha->mqiobase = ioremap(pci_resource_start(ha->pdev, 3),
1665                         pci_resource_len(ha->pdev, 3));
1666         if (ha->mqiobase) {
1667                 /* Read MSIX vector size of the board */
1668                 pci_read_config_word(ha->pdev, QLA_PCI_MSIX_CONTROL, &msix);
1669                 ha->msix_count = msix;
1670                 /* Max queues are bounded by available msix vectors */
1671                 /* queue 0 uses two msix vectors */
1672                 if (ha->msix_count - 1 < ql2xmaxqueues)
1673                         ha->max_queues = ha->msix_count - 1;
1674                 else if (ql2xmaxqueues > QLA_MQ_SIZE)
1675                         ha->max_queues = QLA_MQ_SIZE;
1676                 else
1677                         ha->max_queues = ql2xmaxqueues;
1678                 qla_printk(KERN_INFO, ha,
1679                         "MSI-X vector count: %d\n", msix);
1680         }
1681
1682 mqiobase_exit:
1683         ha->msix_count = ha->max_queues + 1;
1684         return (0);
1685
1686 iospace_error_exit:
1687         return (-ENOMEM);
1688 }
1689
1690 static void
1691 qla2xxx_scan_start(struct Scsi_Host *shost)
1692 {
1693         scsi_qla_host_t *vha = shost_priv(shost);
1694
1695         set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1696         set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1697         set_bit(RSCN_UPDATE, &vha->dpc_flags);
1698         set_bit(NPIV_CONFIG_NEEDED, &vha->dpc_flags);
1699 }
1700
1701 static int
1702 qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
1703 {
1704         scsi_qla_host_t *vha = shost_priv(shost);
1705
1706         if (!vha->host)
1707                 return 1;
1708         if (time > vha->hw->loop_reset_delay * HZ)
1709                 return 1;
1710
1711         return atomic_read(&vha->loop_state) == LOOP_READY;
1712 }
1713
1714 /*
1715  * PCI driver interface
1716  */
1717 static int __devinit
1718 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1719 {
1720         int     ret = -ENODEV;
1721         struct Scsi_Host *host;
1722         scsi_qla_host_t *base_vha = NULL;
1723         struct qla_hw_data *ha;
1724         char pci_info[30];
1725         char fw_str[30];
1726         struct scsi_host_template *sht;
1727         int bars, max_id, mem_only = 0;
1728         uint16_t req_length = 0, rsp_length = 0;
1729         struct req_que *req = NULL;
1730         struct rsp_que *rsp = NULL;
1731
1732         bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
1733         sht = &qla2x00_driver_template;
1734         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1735             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
1736             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8432 ||
1737             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
1738             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 ||
1739             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532 ||
1740             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8001) {
1741                 bars = pci_select_bars(pdev, IORESOURCE_MEM);
1742                 sht = &qla24xx_driver_template;
1743                 mem_only = 1;
1744         }
1745
1746         if (mem_only) {
1747                 if (pci_enable_device_mem(pdev))
1748                         goto probe_out;
1749         } else {
1750                 if (pci_enable_device(pdev))
1751                         goto probe_out;
1752         }
1753
1754         /* This may fail but that's ok */
1755         pci_enable_pcie_error_reporting(pdev);
1756
1757         ha = kzalloc(sizeof(struct qla_hw_data), GFP_KERNEL);
1758         if (!ha) {
1759                 DEBUG(printk("Unable to allocate memory for ha\n"));
1760                 goto probe_out;
1761         }
1762         ha->pdev = pdev;
1763
1764         /* Clear our data area */
1765         ha->bars = bars;
1766         ha->mem_only = mem_only;
1767         spin_lock_init(&ha->hardware_lock);
1768
1769         /* Set ISP-type information. */
1770         qla2x00_set_isp_flags(ha);
1771         /* Configure PCI I/O space */
1772         ret = qla2x00_iospace_config(ha);
1773         if (ret)
1774                 goto probe_hw_failed;
1775
1776         qla_printk(KERN_INFO, ha,
1777             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1778             ha->iobase);
1779
1780         ha->prev_topology = 0;
1781         ha->init_cb_size = sizeof(init_cb_t);
1782         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1783         ha->optrom_size = OPTROM_SIZE_2300;
1784
1785         /* Assign ISP specific operations. */
1786         max_id = MAX_TARGETS_2200;
1787         if (IS_QLA2100(ha)) {
1788                 max_id = MAX_TARGETS_2100;
1789                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1790                 req_length = REQUEST_ENTRY_CNT_2100;
1791                 rsp_length = RESPONSE_ENTRY_CNT_2100;
1792                 ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
1793                 ha->gid_list_info_size = 4;
1794                 ha->flash_conf_off = ~0;
1795                 ha->flash_data_off = ~0;
1796                 ha->nvram_conf_off = ~0;
1797                 ha->nvram_data_off = ~0;
1798                 ha->isp_ops = &qla2100_isp_ops;
1799         } else if (IS_QLA2200(ha)) {
1800                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1801                 req_length = REQUEST_ENTRY_CNT_2200;
1802                 rsp_length = RESPONSE_ENTRY_CNT_2100;
1803                 ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
1804                 ha->gid_list_info_size = 4;
1805                 ha->flash_conf_off = ~0;
1806                 ha->flash_data_off = ~0;
1807                 ha->nvram_conf_off = ~0;
1808                 ha->nvram_data_off = ~0;
1809                 ha->isp_ops = &qla2100_isp_ops;
1810         } else if (IS_QLA23XX(ha)) {
1811                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1812                 req_length = REQUEST_ENTRY_CNT_2200;
1813                 rsp_length = RESPONSE_ENTRY_CNT_2300;
1814                 ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
1815                 ha->gid_list_info_size = 6;
1816                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1817                         ha->optrom_size = OPTROM_SIZE_2322;
1818                 ha->flash_conf_off = ~0;
1819                 ha->flash_data_off = ~0;
1820                 ha->nvram_conf_off = ~0;
1821                 ha->nvram_data_off = ~0;
1822                 ha->isp_ops = &qla2300_isp_ops;
1823         } else if (IS_QLA24XX_TYPE(ha)) {
1824                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1825                 req_length = REQUEST_ENTRY_CNT_24XX;
1826                 rsp_length = RESPONSE_ENTRY_CNT_2300;
1827                 ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
1828                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1829                 ha->gid_list_info_size = 8;
1830                 ha->optrom_size = OPTROM_SIZE_24XX;
1831                 ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA24XX;
1832                 ha->isp_ops = &qla24xx_isp_ops;
1833                 ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
1834                 ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
1835                 ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
1836                 ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
1837         } else if (IS_QLA25XX(ha)) {
1838                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1839                 req_length = REQUEST_ENTRY_CNT_24XX;
1840                 rsp_length = RESPONSE_ENTRY_CNT_2300;
1841                 ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
1842                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
1843                 ha->gid_list_info_size = 8;
1844                 ha->optrom_size = OPTROM_SIZE_25XX;
1845                 ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
1846                 ha->isp_ops = &qla25xx_isp_ops;
1847                 ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
1848                 ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
1849                 ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
1850                 ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
1851         } else if (IS_QLA81XX(ha)) {
1852                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1853                 req_length = REQUEST_ENTRY_CNT_24XX;
1854                 rsp_length = RESPONSE_ENTRY_CNT_2300;
1855                 ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
1856                 ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
1857                 ha->gid_list_info_size = 8;
1858                 ha->optrom_size = OPTROM_SIZE_81XX;
1859                 ha->isp_ops = &qla81xx_isp_ops;
1860                 ha->flash_conf_off = FARX_ACCESS_FLASH_CONF_81XX;
1861                 ha->flash_data_off = FARX_ACCESS_FLASH_DATA_81XX;
1862                 ha->nvram_conf_off = ~0;
1863                 ha->nvram_data_off = ~0;
1864         }
1865
1866         mutex_init(&ha->vport_lock);
1867         init_completion(&ha->mbx_cmd_comp);
1868         complete(&ha->mbx_cmd_comp);
1869         init_completion(&ha->mbx_intr_comp);
1870
1871         set_bit(0, (unsigned long *) ha->vp_idx_map);
1872
1873         ret = qla2x00_mem_alloc(ha, req_length, rsp_length, &req, &rsp);
1874         if (!ret) {
1875                 qla_printk(KERN_WARNING, ha,
1876                     "[ERROR] Failed to allocate memory for adapter\n");
1877
1878                 goto probe_hw_failed;
1879         }
1880
1881         req->max_q_depth = MAX_Q_DEPTH;
1882         if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
1883                 req->max_q_depth = ql2xmaxqdepth;
1884
1885
1886         base_vha = qla2x00_create_host(sht, ha);
1887         if (!base_vha) {
1888                 qla_printk(KERN_WARNING, ha,
1889                     "[ERROR] Failed to allocate memory for scsi_host\n");
1890
1891                 ret = -ENOMEM;
1892                 qla2x00_mem_free(ha);
1893                 qla2x00_free_que(ha, req, rsp);
1894                 goto probe_hw_failed;
1895         }
1896
1897         pci_set_drvdata(pdev, base_vha);
1898
1899         qla2x00_config_dma_addressing(base_vha);
1900
1901         host = base_vha->host;
1902         base_vha->req_ques[0] = req->id;
1903         host->can_queue = req->length + 128;
1904         if (IS_QLA2XXX_MIDTYPE(ha))
1905                 base_vha->mgmt_svr_loop_id = 10 + base_vha->vp_idx;
1906         else
1907                 base_vha->mgmt_svr_loop_id = MANAGEMENT_SERVER +
1908                                                 base_vha->vp_idx;
1909         if (IS_QLA2100(ha))
1910                 host->sg_tablesize = 32;
1911         host->max_id = max_id;
1912         host->this_id = 255;
1913         host->cmd_per_lun = 3;
1914         host->unique_id = host->host_no;
1915         host->max_cmd_len = MAX_CMDSZ;
1916         host->max_channel = MAX_BUSES - 1;
1917         host->max_lun = MAX_LUNS;
1918         host->transportt = qla2xxx_transport_template;
1919
1920         /* Set up the irqs */
1921         ret = qla2x00_request_irqs(ha, rsp);
1922         if (ret)
1923                 goto probe_init_failed;
1924         /* Alloc arrays of request and response ring ptrs */
1925         if (!qla2x00_alloc_queues(ha)) {
1926                 qla_printk(KERN_WARNING, ha,
1927                 "[ERROR] Failed to allocate memory for queue"
1928                 " pointers\n");
1929                 goto probe_init_failed;
1930         }
1931         ha->rsp_q_map[0] = rsp;
1932         ha->req_q_map[0] = req;
1933
1934         if (ha->mqenable) {
1935                 ha->isp_ops->wrt_req_reg = qla25xx_wrt_req_reg;
1936                 ha->isp_ops->wrt_rsp_reg = qla25xx_wrt_rsp_reg;
1937                 ha->isp_ops->rd_req_reg = qla25xx_rd_req_reg;
1938         }
1939
1940         if (qla2x00_initialize_adapter(base_vha)) {
1941                 qla_printk(KERN_WARNING, ha,
1942                     "Failed to initialize adapter\n");
1943
1944                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1945                     "Adapter flags %x.\n",
1946                     base_vha->host_no, base_vha->device_flags));
1947
1948                 ret = -ENODEV;
1949                 goto probe_failed;
1950         }
1951
1952         /*
1953          * Startup the kernel thread for this host adapter
1954          */
1955         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1956                         "%s_dpc", base_vha->host_str);
1957         if (IS_ERR(ha->dpc_thread)) {
1958                 qla_printk(KERN_WARNING, ha,
1959                     "Unable to start DPC thread!\n");
1960                 ret = PTR_ERR(ha->dpc_thread);
1961                 goto probe_failed;
1962         }
1963
1964         list_add_tail(&base_vha->list, &ha->vp_list);
1965         base_vha->host->irq = ha->pdev->irq;
1966
1967         /* Initialized the timer */
1968         qla2x00_start_timer(base_vha, qla2x00_timer, WATCH_INTERVAL);
1969
1970         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1971             base_vha->host_no, ha));
1972
1973         base_vha->flags.init_done = 1;
1974         base_vha->flags.online = 1;
1975
1976         ret = scsi_add_host(host, &pdev->dev);
1977         if (ret)
1978                 goto probe_failed;
1979
1980         ha->isp_ops->enable_intrs(ha);
1981
1982         scsi_scan_host(host);
1983
1984         qla2x00_alloc_sysfs_attr(base_vha);
1985
1986         qla2x00_init_host_attr(base_vha);
1987
1988         qla2x00_dfs_setup(base_vha);
1989
1990         qla_printk(KERN_INFO, ha, "\n"
1991             " QLogic Fibre Channel HBA Driver: %s\n"
1992             "  QLogic %s - %s\n"
1993             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1994             qla2x00_version_str, ha->model_number,
1995             ha->model_desc ? ha->model_desc : "", pdev->device,
1996             ha->isp_ops->pci_info_str(base_vha, pci_info), pci_name(pdev),
1997             ha->flags.enable_64bit_addressing ? '+' : '-', base_vha->host_no,
1998             ha->isp_ops->fw_version_str(base_vha, fw_str));
1999
2000         return 0;
2001
2002 probe_init_failed:
2003         qla2x00_free_que(ha, req, rsp);
2004         ha->max_queues = 0;
2005
2006 probe_failed:
2007         qla2x00_free_device(base_vha);
2008
2009         scsi_host_put(base_vha->host);
2010
2011 probe_hw_failed:
2012         if (ha->iobase)
2013                 iounmap(ha->iobase);
2014
2015         pci_release_selected_regions(ha->pdev, ha->bars);
2016         kfree(ha);
2017         ha = NULL;
2018
2019 probe_out:
2020         pci_disable_device(pdev);
2021         return ret;
2022 }
2023
2024 static void
2025 qla2x00_remove_one(struct pci_dev *pdev)
2026 {
2027         scsi_qla_host_t *base_vha, *vha, *temp;
2028         struct qla_hw_data  *ha;
2029
2030         base_vha = pci_get_drvdata(pdev);
2031         ha = base_vha->hw;
2032
2033         list_for_each_entry_safe(vha, temp, &ha->vp_list, list) {
2034                 if (vha && vha->fc_vport)
2035                         fc_vport_terminate(vha->fc_vport);
2036         }
2037
2038         set_bit(UNLOADING, &base_vha->dpc_flags);
2039
2040         qla2x00_dfs_remove(base_vha);
2041
2042         qla84xx_put_chip(base_vha);
2043
2044         qla2x00_free_sysfs_attr(base_vha);
2045
2046         fc_remove_host(base_vha->host);
2047
2048         scsi_remove_host(base_vha->host);
2049
2050         qla2x00_free_device(base_vha);
2051
2052         scsi_host_put(base_vha->host);
2053
2054         if (ha->iobase)
2055                 iounmap(ha->iobase);
2056
2057         if (ha->mqiobase)
2058                 iounmap(ha->mqiobase);
2059
2060         pci_release_selected_regions(ha->pdev, ha->bars);
2061         kfree(ha);
2062         ha = NULL;
2063
2064         pci_disable_device(pdev);
2065         pci_set_drvdata(pdev, NULL);
2066 }
2067
2068 static void
2069 qla2x00_free_device(scsi_qla_host_t *vha)
2070 {
2071         struct qla_hw_data *ha = vha->hw;
2072         qla2x00_abort_all_cmds(vha, DID_NO_CONNECT << 16);
2073
2074         /* Disable timer */
2075         if (vha->timer_active)
2076                 qla2x00_stop_timer(vha);
2077
2078         vha->flags.online = 0;
2079
2080         /* Kill the kernel thread for this host */
2081         if (ha->dpc_thread) {
2082                 struct task_struct *t = ha->dpc_thread;
2083
2084                 /*
2085                  * qla2xxx_wake_dpc checks for ->dpc_thread
2086                  * so we need to zero it out.
2087                  */
2088                 ha->dpc_thread = NULL;
2089                 kthread_stop(t);
2090         }
2091
2092         if (ha->flags.fce_enabled)
2093                 qla2x00_disable_fce_trace(vha, NULL, NULL);
2094
2095         if (ha->eft)
2096                 qla2x00_disable_eft_trace(vha);
2097
2098         /* Stop currently executing firmware. */
2099         qla2x00_try_to_stop_firmware(vha);
2100
2101         /* turn-off interrupts on the card */
2102         if (ha->interrupts_on)
2103                 ha->isp_ops->disable_intrs(ha);
2104
2105         qla2x00_free_irqs(vha);
2106
2107         qla2x00_mem_free(ha);
2108
2109         qla2x00_free_queues(ha);
2110 }
2111
2112 static inline void
2113 qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
2114     int defer)
2115 {
2116         struct fc_rport *rport;
2117
2118         if (!fcport->rport)
2119                 return;
2120
2121         rport = fcport->rport;
2122         if (defer) {
2123                 spin_lock_irq(vha->host->host_lock);
2124                 fcport->drport = rport;
2125                 spin_unlock_irq(vha->host->host_lock);
2126                 set_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
2127                 qla2xxx_wake_dpc(vha);
2128         } else
2129                 fc_remote_port_delete(rport);
2130 }
2131
2132 /*
2133  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
2134  *
2135  * Input: ha = adapter block pointer.  fcport = port structure pointer.
2136  *
2137  * Return: None.
2138  *
2139  * Context:
2140  */
2141 void qla2x00_mark_device_lost(scsi_qla_host_t *vha, fc_port_t *fcport,
2142     int do_login, int defer)
2143 {
2144         if (atomic_read(&fcport->state) == FCS_ONLINE &&
2145             vha->vp_idx == fcport->vp_idx) {
2146                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
2147                 qla2x00_schedule_rport_del(vha, fcport, defer);
2148         }
2149         /*
2150          * We may need to retry the login, so don't change the state of the
2151          * port but do the retries.
2152          */
2153         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
2154                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
2155
2156         if (!do_login)
2157                 return;
2158
2159         if (fcport->login_retry == 0) {
2160                 fcport->login_retry = vha->hw->login_retry_count;
2161                 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
2162
2163                 DEBUG(printk("scsi(%ld): Port login retry: "
2164                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
2165                     "id = 0x%04x retry cnt=%d\n",
2166                     vha->host_no,
2167                     fcport->port_name[0],
2168                     fcport->port_name[1],
2169                     fcport->port_name[2],
2170                     fcport->port_name[3],
2171                     fcport->port_name[4],
2172                     fcport->port_name[5],
2173                     fcport->port_name[6],
2174                     fcport->port_name[7],
2175                     fcport->loop_id,
2176                     fcport->login_retry));
2177         }
2178 }
2179
2180 /*
2181  * qla2x00_mark_all_devices_lost
2182  *      Updates fcport state when device goes offline.
2183  *
2184  * Input:
2185  *      ha = adapter block pointer.
2186  *      fcport = port structure pointer.
2187  *
2188  * Return:
2189  *      None.
2190  *
2191  * Context:
2192  */
2193 void
2194 qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha, int defer)
2195 {
2196         fc_port_t *fcport;
2197
2198         list_for_each_entry(fcport, &vha->vp_fcports, list) {
2199                 if (vha->vp_idx != fcport->vp_idx)
2200                         continue;
2201                 /*
2202                  * No point in marking the device as lost, if the device is
2203                  * already DEAD.
2204                  */
2205                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
2206                         continue;
2207                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2208                         atomic_set(&fcport->state, FCS_DEVICE_LOST);
2209                         qla2x00_schedule_rport_del(vha, fcport, defer);
2210                 } else
2211                         atomic_set(&fcport->state, FCS_DEVICE_LOST);
2212         }
2213 }
2214
2215 /*
2216 * qla2x00_mem_alloc
2217 *      Allocates adapter memory.
2218 *
2219 * Returns:
2220 *      0  = success.
2221 *      !0  = failure.
2222 */
2223 static int
2224 qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
2225         struct req_que **req, struct rsp_que **rsp)
2226 {
2227         char    name[16];
2228
2229         ha->init_cb_size = sizeof(init_cb_t);
2230         if (IS_QLA2XXX_MIDTYPE(ha))
2231                 ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
2232
2233         ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
2234                 &ha->init_cb_dma, GFP_KERNEL);
2235         if (!ha->init_cb)
2236                 goto fail;
2237
2238         ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
2239                 &ha->gid_list_dma, GFP_KERNEL);
2240         if (!ha->gid_list)
2241                 goto fail_free_init_cb;
2242
2243         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2244         if (!ha->srb_mempool)
2245                 goto fail_free_gid_list;
2246
2247         /* Get memory for cached NVRAM */
2248         ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
2249         if (!ha->nvram)
2250                 goto fail_free_srb_mempool;
2251
2252         snprintf(name, sizeof(name), "%s_%d", QLA2XXX_DRIVER_NAME,
2253                 ha->pdev->device);
2254         ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
2255                 DMA_POOL_SIZE, 8, 0);
2256         if (!ha->s_dma_pool)
2257                 goto fail_free_nvram;
2258
2259         /* Allocate memory for SNS commands */
2260         if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
2261         /* Get consistent memory allocated for SNS commands */
2262                 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
2263                 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, GFP_KERNEL);
2264                 if (!ha->sns_cmd)
2265                         goto fail_dma_pool;
2266         } else {
2267         /* Get consistent memory allocated for MS IOCB */
2268                 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2269                         &ha->ms_iocb_dma);
2270                 if (!ha->ms_iocb)
2271                         goto fail_dma_pool;
2272         /* Get consistent memory allocated for CT SNS commands */
2273                 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2274                         sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, GFP_KERNEL);
2275                 if (!ha->ct_sns)
2276                         goto fail_free_ms_iocb;
2277         }
2278
2279         /* Allocate memory for request ring */
2280         *req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
2281         if (!*req) {
2282                 DEBUG(printk("Unable to allocate memory for req\n"));
2283                 goto fail_req;
2284         }
2285         (*req)->length = req_len;
2286         (*req)->ring = dma_alloc_coherent(&ha->pdev->dev,
2287                 ((*req)->length + 1) * sizeof(request_t),
2288                 &(*req)->dma, GFP_KERNEL);
2289         if (!(*req)->ring) {
2290                 DEBUG(printk("Unable to allocate memory for req_ring\n"));
2291                 goto fail_req_ring;
2292         }
2293         /* Allocate memory for response ring */
2294         *rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
2295         if (!*rsp) {
2296                 qla_printk(KERN_WARNING, ha,
2297                         "Unable to allocate memory for rsp\n");
2298                 goto fail_rsp;
2299         }
2300         (*rsp)->hw = ha;
2301         (*rsp)->length = rsp_len;
2302         (*rsp)->ring = dma_alloc_coherent(&ha->pdev->dev,
2303                 ((*rsp)->length + 1) * sizeof(response_t),
2304                 &(*rsp)->dma, GFP_KERNEL);
2305         if (!(*rsp)->ring) {
2306                 qla_printk(KERN_WARNING, ha,
2307                         "Unable to allocate memory for rsp_ring\n");
2308                 goto fail_rsp_ring;
2309         }
2310         (*req)->rsp = *rsp;
2311         (*rsp)->req = *req;
2312         /* Allocate memory for NVRAM data for vports */
2313         if (ha->nvram_npiv_size) {
2314                 ha->npiv_info = kzalloc(sizeof(struct qla_npiv_entry) *
2315                                         ha->nvram_npiv_size, GFP_KERNEL);
2316                 if (!ha->npiv_info) {
2317                         qla_printk(KERN_WARNING, ha,
2318                                 "Unable to allocate memory for npiv info\n");
2319                         goto fail_npiv_info;
2320                 }
2321         } else
2322                 ha->npiv_info = NULL;
2323
2324         INIT_LIST_HEAD(&ha->vp_list);
2325         return 1;
2326
2327 fail_npiv_info:
2328         dma_free_coherent(&ha->pdev->dev, ((*rsp)->length + 1) *
2329                 sizeof(response_t), (*rsp)->ring, (*rsp)->dma);
2330         (*rsp)->ring = NULL;
2331         (*rsp)->dma = 0;
2332 fail_rsp_ring:
2333         kfree(*rsp);
2334 fail_rsp:
2335         dma_free_coherent(&ha->pdev->dev, ((*req)->length + 1) *
2336                 sizeof(request_t), (*req)->ring, (*req)->dma);
2337         (*req)->ring = NULL;
2338         (*req)->dma = 0;
2339 fail_req_ring:
2340         kfree(*req);
2341 fail_req:
2342         dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2343                 ha->ct_sns, ha->ct_sns_dma);
2344         ha->ct_sns = NULL;
2345         ha->ct_sns_dma = 0;
2346 fail_free_ms_iocb:
2347         dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2348         ha->ms_iocb = NULL;
2349         ha->ms_iocb_dma = 0;
2350 fail_dma_pool:
2351         dma_pool_destroy(ha->s_dma_pool);
2352         ha->s_dma_pool = NULL;
2353 fail_free_nvram:
2354         kfree(ha->nvram);
2355         ha->nvram = NULL;
2356 fail_free_srb_mempool:
2357         mempool_destroy(ha->srb_mempool);
2358         ha->srb_mempool = NULL;
2359 fail_free_gid_list:
2360         dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2361         ha->gid_list_dma);
2362         ha->gid_list = NULL;
2363         ha->gid_list_dma = 0;
2364 fail_free_init_cb:
2365         dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
2366         ha->init_cb_dma);
2367         ha->init_cb = NULL;
2368         ha->init_cb_dma = 0;
2369 fail:
2370         DEBUG(printk("%s: Memory allocation failure\n", __func__));
2371         return -ENOMEM;
2372 }
2373
2374 /*
2375 * qla2x00_mem_free
2376 *      Frees all adapter allocated memory.
2377 *
2378 * Input:
2379 *      ha = adapter block pointer.
2380 */
2381 static void
2382 qla2x00_mem_free(struct qla_hw_data *ha)
2383 {
2384         if (ha->srb_mempool)
2385                 mempool_destroy(ha->srb_mempool);
2386
2387         if (ha->fce)
2388                 dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
2389                 ha->fce_dma);
2390
2391         if (ha->fw_dump) {
2392                 if (ha->eft)
2393                         dma_free_coherent(&ha->pdev->dev,
2394                         ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2395                 vfree(ha->fw_dump);
2396         }
2397
2398         if (ha->sns_cmd)
2399                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2400                 ha->sns_cmd, ha->sns_cmd_dma);
2401
2402         if (ha->ct_sns)
2403                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2404                 ha->ct_sns, ha->ct_sns_dma);
2405
2406         if (ha->sfp_data)
2407                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2408
2409         if (ha->ms_iocb)
2410                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2411
2412         if (ha->s_dma_pool)
2413                 dma_pool_destroy(ha->s_dma_pool);
2414
2415
2416         if (ha->gid_list)
2417                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2418                 ha->gid_list_dma);
2419
2420
2421         if (ha->init_cb)
2422                 dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
2423                 ha->init_cb, ha->init_cb_dma);
2424         vfree(ha->optrom_buffer);
2425         kfree(ha->nvram);
2426         kfree(ha->npiv_info);
2427
2428         ha->srb_mempool = NULL;
2429         ha->eft = NULL;
2430         ha->eft_dma = 0;
2431         ha->sns_cmd = NULL;
2432         ha->sns_cmd_dma = 0;
2433         ha->ct_sns = NULL;
2434         ha->ct_sns_dma = 0;
2435         ha->ms_iocb = NULL;
2436         ha->ms_iocb_dma = 0;
2437         ha->init_cb = NULL;
2438         ha->init_cb_dma = 0;
2439
2440         ha->s_dma_pool = NULL;
2441
2442         ha->gid_list = NULL;
2443         ha->gid_list_dma = 0;
2444
2445         ha->fw_dump = NULL;
2446         ha->fw_dumped = 0;
2447         ha->fw_dump_reading = 0;
2448 }
2449
2450 struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
2451                                                 struct qla_hw_data *ha)
2452 {
2453         struct Scsi_Host *host;
2454         struct scsi_qla_host *vha = NULL;
2455
2456         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
2457         if (host == NULL) {
2458                 printk(KERN_WARNING
2459                 "qla2xxx: Couldn't allocate host from scsi layer!\n");
2460                 goto fail;
2461         }
2462
2463         /* Clear our data area */
2464         vha = shost_priv(host);
2465         memset(vha, 0, sizeof(scsi_qla_host_t));
2466
2467         vha->host = host;
2468         vha->host_no = host->host_no;
2469         vha->hw = ha;
2470
2471         INIT_LIST_HEAD(&vha->vp_fcports);
2472         INIT_LIST_HEAD(&vha->work_list);
2473         INIT_LIST_HEAD(&vha->list);
2474
2475         sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
2476         return vha;
2477
2478 fail:
2479         return vha;
2480 }
2481
2482 static struct qla_work_evt *
2483 qla2x00_alloc_work(struct scsi_qla_host *vha, enum qla_work_type type,
2484     int locked)
2485 {
2486         struct qla_work_evt *e;
2487
2488         e = kzalloc(sizeof(struct qla_work_evt), locked ? GFP_ATOMIC:
2489             GFP_KERNEL);
2490         if (!e)
2491                 return NULL;
2492
2493         INIT_LIST_HEAD(&e->list);
2494         e->type = type;
2495         e->flags = QLA_EVT_FLAG_FREE;
2496         return e;
2497 }
2498
2499 static int
2500 qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e, int locked)
2501 {
2502         unsigned long uninitialized_var(flags);
2503         struct qla_hw_data *ha = vha->hw;
2504
2505         if (!locked)
2506                 spin_lock_irqsave(&ha->hardware_lock, flags);
2507         list_add_tail(&e->list, &vha->work_list);
2508         qla2xxx_wake_dpc(vha);
2509         if (!locked)
2510                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2511         return QLA_SUCCESS;
2512 }
2513
2514 int
2515 qla2x00_post_aen_work(struct scsi_qla_host *vha, enum fc_host_event_code code,
2516     u32 data)
2517 {
2518         struct qla_work_evt *e;
2519
2520         e = qla2x00_alloc_work(vha, QLA_EVT_AEN, 1);
2521         if (!e)
2522                 return QLA_FUNCTION_FAILED;
2523
2524         e->u.aen.code = code;
2525         e->u.aen.data = data;
2526         return qla2x00_post_work(vha, e, 1);
2527 }
2528
2529 static void
2530 qla2x00_do_work(struct scsi_qla_host *vha)
2531 {
2532         struct qla_work_evt *e;
2533         struct qla_hw_data *ha = vha->hw;
2534
2535         spin_lock_irq(&ha->hardware_lock);
2536         while (!list_empty(&vha->work_list)) {
2537                 e = list_entry(vha->work_list.next, struct qla_work_evt, list);
2538                 list_del_init(&e->list);
2539                 spin_unlock_irq(&ha->hardware_lock);
2540
2541                 switch (e->type) {
2542                 case QLA_EVT_AEN:
2543                         fc_host_post_event(vha->host, fc_get_event_number(),
2544                             e->u.aen.code, e->u.aen.data);
2545                         break;
2546                 }
2547                 if (e->flags & QLA_EVT_FLAG_FREE)
2548                         kfree(e);
2549                 spin_lock_irq(&ha->hardware_lock);
2550         }
2551         spin_unlock_irq(&ha->hardware_lock);
2552 }
2553 /* Relogins all the fcports of a vport
2554  * Context: dpc thread
2555  */
2556 void qla2x00_relogin(struct scsi_qla_host *vha)
2557 {
2558         fc_port_t       *fcport;
2559         uint8_t         status;
2560         uint16_t        next_loopid = 0;
2561         struct qla_hw_data *ha = vha->hw;
2562
2563         list_for_each_entry(fcport, &vha->vp_fcports, list) {
2564         /*
2565          * If the port is not ONLINE then try to login
2566          * to it if we haven't run out of retries.
2567          */
2568                 if (atomic_read(&fcport->state) !=
2569                         FCS_ONLINE && fcport->login_retry) {
2570
2571                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2572                                 if (fcport->flags & FCF_TAPE_PRESENT)
2573                                         ha->isp_ops->fabric_logout(vha,
2574                                                         fcport->loop_id,
2575                                                         fcport->d_id.b.domain,
2576                                                         fcport->d_id.b.area,
2577                                                         fcport->d_id.b.al_pa);
2578
2579                                 status = qla2x00_fabric_login(vha, fcport,
2580                                                         &next_loopid);
2581                         } else
2582                                 status = qla2x00_local_device_login(vha,
2583                                                                 fcport);
2584
2585                         fcport->login_retry--;
2586                         if (status == QLA_SUCCESS) {
2587                                 fcport->old_loop_id = fcport->loop_id;
2588
2589                                 DEBUG(printk("scsi(%ld): port login OK: logged "
2590                                 "in ID 0x%x\n", vha->host_no, fcport->loop_id));
2591
2592                                 qla2x00_update_fcport(vha, fcport);
2593
2594                         } else if (status == 1) {
2595                                 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
2596                                 /* retry the login again */
2597                                 DEBUG(printk("scsi(%ld): Retrying"
2598                                 " %d login again loop_id 0x%x\n",
2599                                 vha->host_no, fcport->login_retry,
2600                                                 fcport->loop_id));
2601                         } else {
2602                                 fcport->login_retry = 0;
2603                         }
2604
2605                         if (fcport->login_retry == 0 && status != QLA_SUCCESS)
2606                                 fcport->loop_id = FC_NO_LOOP_ID;
2607                 }
2608                 if (test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags))
2609                         break;
2610         }
2611 }
2612
2613 /**************************************************************************
2614 * qla2x00_do_dpc
2615 *   This kernel thread is a task that is schedule by the interrupt handler
2616 *   to perform the background processing for interrupts.
2617 *
2618 * Notes:
2619 * This task always run in the context of a kernel thread.  It
2620 * is kick-off by the driver's detect code and starts up
2621 * up one per adapter. It immediately goes to sleep and waits for
2622 * some fibre event.  When either the interrupt handler or
2623 * the timer routine detects a event it will one of the task
2624 * bits then wake us up.
2625 **************************************************************************/
2626 static int
2627 qla2x00_do_dpc(void *data)
2628 {
2629         int             rval;
2630         scsi_qla_host_t *base_vha;
2631         struct qla_hw_data *ha;
2632
2633         ha = (struct qla_hw_data *)data;
2634         base_vha = pci_get_drvdata(ha->pdev);
2635
2636         set_user_nice(current, -20);
2637
2638         while (!kthread_should_stop()) {
2639                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2640
2641                 set_current_state(TASK_INTERRUPTIBLE);
2642                 schedule();
2643                 __set_current_state(TASK_RUNNING);
2644
2645                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2646
2647                 /* Initialization not yet finished. Don't do anything yet. */
2648                 if (!base_vha->flags.init_done)
2649                         continue;
2650
2651                 DEBUG3(printk("scsi(%ld): DPC handler\n", base_vha->host_no));
2652
2653                 ha->dpc_active = 1;
2654
2655                 if (ha->flags.mbox_busy) {
2656                         ha->dpc_active = 0;
2657                         continue;
2658                 }
2659
2660                 qla2x00_do_work(base_vha);
2661
2662                 if (test_and_clear_bit(ISP_ABORT_NEEDED,
2663                                                 &base_vha->dpc_flags)) {
2664
2665                         DEBUG(printk("scsi(%ld): dpc: sched "
2666                             "qla2x00_abort_isp ha = %p\n",
2667                             base_vha->host_no, ha));
2668                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2669                             &base_vha->dpc_flags))) {
2670
2671                                 if (qla2x00_abort_isp(base_vha)) {
2672                                         /* failed. retry later */
2673                                         set_bit(ISP_ABORT_NEEDED,
2674                                             &base_vha->dpc_flags);
2675                                 }
2676                                 clear_bit(ABORT_ISP_ACTIVE,
2677                                                 &base_vha->dpc_flags);
2678                         }
2679
2680                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2681                             base_vha->host_no));
2682                 }
2683
2684                 if (test_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags)) {
2685                         qla2x00_update_fcports(base_vha);
2686                         clear_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
2687                 }
2688
2689                 if (test_and_clear_bit(RESET_MARKER_NEEDED,
2690                                                         &base_vha->dpc_flags) &&
2691                     (!(test_and_set_bit(RESET_ACTIVE, &base_vha->dpc_flags)))) {
2692
2693                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2694                             base_vha->host_no));
2695
2696                         qla2x00_rst_aen(base_vha);
2697                         clear_bit(RESET_ACTIVE, &base_vha->dpc_flags);
2698                 }
2699
2700                 /* Retry each device up to login retry count */
2701                 if ((test_and_clear_bit(RELOGIN_NEEDED,
2702                                                 &base_vha->dpc_flags)) &&
2703                     !test_bit(LOOP_RESYNC_NEEDED, &base_vha->dpc_flags) &&
2704                     atomic_read(&base_vha->loop_state) != LOOP_DOWN) {
2705
2706                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2707                                         base_vha->host_no));
2708                         qla2x00_relogin(base_vha);
2709
2710                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2711                             base_vha->host_no));
2712                 }
2713
2714                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED,
2715                                                         &base_vha->dpc_flags)) {
2716
2717                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2718                                 base_vha->host_no));
2719
2720                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2721                             &base_vha->dpc_flags))) {
2722
2723                                 rval = qla2x00_loop_resync(base_vha);
2724
2725                                 clear_bit(LOOP_RESYNC_ACTIVE,
2726                                                 &base_vha->dpc_flags);
2727                         }
2728
2729                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2730                             base_vha->host_no));
2731                 }
2732
2733                 if (test_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags) &&
2734                     atomic_read(&base_vha->loop_state) == LOOP_READY) {
2735                         clear_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags);
2736                         qla2xxx_flash_npiv_conf(base_vha);
2737                 }
2738
2739                 if (!ha->interrupts_on)
2740                         ha->isp_ops->enable_intrs(ha);
2741
2742                 if (test_and_clear_bit(BEACON_BLINK_NEEDED,
2743                                         &base_vha->dpc_flags))
2744                         ha->isp_ops->beacon_blink(base_vha);
2745
2746                 qla2x00_do_dpc_all_vps(base_vha);
2747
2748                 ha->dpc_active = 0;
2749         } /* End of while(1) */
2750
2751         DEBUG(printk("scsi(%ld): DPC handler exiting\n", base_vha->host_no));
2752
2753         /*
2754          * Make sure that nobody tries to wake us up again.
2755          */
2756         ha->dpc_active = 0;
2757
2758         return 0;
2759 }
2760
2761 void
2762 qla2xxx_wake_dpc(struct scsi_qla_host *vha)
2763 {
2764         struct qla_hw_data *ha = vha->hw;
2765         struct task_struct *t = ha->dpc_thread;
2766
2767         if (!test_bit(UNLOADING, &vha->dpc_flags) && t)
2768                 wake_up_process(t);
2769 }
2770
2771 /*
2772 *  qla2x00_rst_aen
2773 *      Processes asynchronous reset.
2774 *
2775 * Input:
2776 *      ha  = adapter block pointer.
2777 */
2778 static void
2779 qla2x00_rst_aen(scsi_qla_host_t *vha)
2780 {
2781         if (vha->flags.online && !vha->flags.reset_active &&
2782             !atomic_read(&vha->loop_down_timer) &&
2783             !(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))) {
2784                 do {
2785                         clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
2786
2787                         /*
2788                          * Issue marker command only when we are going to start
2789                          * the I/O.
2790                          */
2791                         vha->marker_needed = 1;
2792                 } while (!atomic_read(&vha->loop_down_timer) &&
2793                     (test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags)));
2794         }
2795 }
2796
2797 static void
2798 qla2x00_sp_free_dma(srb_t *sp)
2799 {
2800         struct scsi_cmnd *cmd = sp->cmd;
2801
2802         if (sp->flags & SRB_DMA_VALID) {
2803                 scsi_dma_unmap(cmd);
2804                 sp->flags &= ~SRB_DMA_VALID;
2805         }
2806         CMD_SP(cmd) = NULL;
2807 }
2808
2809 void
2810 qla2x00_sp_compl(struct qla_hw_data *ha, srb_t *sp)
2811 {
2812         struct scsi_cmnd *cmd = sp->cmd;
2813
2814         qla2x00_sp_free_dma(sp);
2815
2816         mempool_free(sp, ha->srb_mempool);
2817
2818         cmd->scsi_done(cmd);
2819 }
2820
2821 /**************************************************************************
2822 *   qla2x00_timer
2823 *
2824 * Description:
2825 *   One second timer
2826 *
2827 * Context: Interrupt
2828 ***************************************************************************/
2829 void
2830 qla2x00_timer(scsi_qla_host_t *vha)
2831 {
2832         unsigned long   cpu_flags = 0;
2833         fc_port_t       *fcport;
2834         int             start_dpc = 0;
2835         int             index;
2836         srb_t           *sp;
2837         int             t;
2838         struct qla_hw_data *ha = vha->hw;
2839         struct req_que *req;
2840         /*
2841          * Ports - Port down timer.
2842          *
2843          * Whenever, a port is in the LOST state we start decrementing its port
2844          * down timer every second until it reaches zero. Once  it reaches zero
2845          * the port it marked DEAD.
2846          */
2847         t = 0;
2848         list_for_each_entry(fcport, &vha->vp_fcports, list) {
2849                 if (fcport->port_type != FCT_TARGET)
2850                         continue;
2851
2852                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2853
2854                         if (atomic_read(&fcport->port_down_timer) == 0)
2855                                 continue;
2856
2857                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2858                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2859
2860                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2861                             "%d remaining\n",
2862                             vha->host_no,
2863                             t, atomic_read(&fcport->port_down_timer)));
2864                 }
2865                 t++;
2866         } /* End of for fcport  */
2867
2868
2869         /* Loop down handler. */
2870         if (atomic_read(&vha->loop_down_timer) > 0 &&
2871             !(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
2872                 && vha->flags.online) {
2873
2874                 if (atomic_read(&vha->loop_down_timer) ==
2875                     vha->loop_down_abort_time) {
2876
2877                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2878                             "queues before time expire\n",
2879                             vha->host_no));
2880
2881                         if (!IS_QLA2100(ha) && vha->link_down_timeout)
2882                                 atomic_set(&vha->loop_state, LOOP_DEAD);
2883
2884                         /* Schedule an ISP abort to return any tape commands. */
2885                         /* NPIV - scan physical port only */
2886                         if (!vha->vp_idx) {
2887                                 spin_lock_irqsave(&ha->hardware_lock,
2888                                     cpu_flags);
2889                                 req = ha->req_q_map[0];
2890                                 for (index = 1;
2891                                     index < MAX_OUTSTANDING_COMMANDS;
2892                                     index++) {
2893                                         fc_port_t *sfcp;
2894
2895                                         sp = req->outstanding_cmds[index];
2896                                         if (!sp)
2897                                                 continue;
2898                                         sfcp = sp->fcport;
2899                                         if (!(sfcp->flags & FCF_TAPE_PRESENT))
2900                                                 continue;
2901
2902                                         set_bit(ISP_ABORT_NEEDED,
2903                                                         &vha->dpc_flags);
2904                                         break;
2905                                 }
2906                                 spin_unlock_irqrestore(&ha->hardware_lock,
2907                                                                 cpu_flags);
2908                         }
2909                         set_bit(ABORT_QUEUES_NEEDED, &vha->dpc_flags);
2910                         start_dpc++;
2911                 }
2912
2913                 /* if the loop has been down for 4 minutes, reinit adapter */
2914                 if (atomic_dec_and_test(&vha->loop_down_timer) != 0) {
2915                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2916                             "restarting queues.\n",
2917                             vha->host_no));
2918
2919                         set_bit(RESTART_QUEUES_NEEDED, &vha->dpc_flags);
2920                         start_dpc++;
2921
2922                         if (!(vha->device_flags & DFLG_NO_CABLE) &&
2923                             !vha->vp_idx) {
2924                                 DEBUG(printk("scsi(%ld): Loop down - "
2925                                     "aborting ISP.\n",
2926                                     vha->host_no));
2927                                 qla_printk(KERN_WARNING, ha,
2928                                     "Loop down - aborting ISP.\n");
2929
2930                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2931                         }
2932                 }
2933                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2934                     vha->host_no,
2935                     atomic_read(&vha->loop_down_timer)));
2936         }
2937
2938         /* Check if beacon LED needs to be blinked */
2939         if (ha->beacon_blink_led == 1) {
2940                 set_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags);
2941                 start_dpc++;
2942         }
2943
2944         /* Process any deferred work. */
2945         if (!list_empty(&vha->work_list))
2946                 start_dpc++;
2947
2948         /* Schedule the DPC routine if needed */
2949         if ((test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
2950             test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) ||
2951             test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags) ||
2952             start_dpc ||
2953             test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) ||
2954             test_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags) ||
2955             test_bit(VP_DPC_NEEDED, &vha->dpc_flags) ||
2956             test_bit(RELOGIN_NEEDED, &vha->dpc_flags)))
2957                 qla2xxx_wake_dpc(vha);
2958
2959         qla2x00_restart_timer(vha, WATCH_INTERVAL);
2960 }
2961
2962 /* Firmware interface routines. */
2963
2964 #define FW_BLOBS        7
2965 #define FW_ISP21XX      0
2966 #define FW_ISP22XX      1
2967 #define FW_ISP2300      2
2968 #define FW_ISP2322      3
2969 #define FW_ISP24XX      4
2970 #define FW_ISP25XX      5
2971 #define FW_ISP81XX      6
2972
2973 #define FW_FILE_ISP21XX "ql2100_fw.bin"
2974 #define FW_FILE_ISP22XX "ql2200_fw.bin"
2975 #define FW_FILE_ISP2300 "ql2300_fw.bin"
2976 #define FW_FILE_ISP2322 "ql2322_fw.bin"
2977 #define FW_FILE_ISP24XX "ql2400_fw.bin"
2978 #define FW_FILE_ISP25XX "ql2500_fw.bin"
2979 #define FW_FILE_ISP81XX "ql8100_fw.bin"
2980
2981 static DEFINE_MUTEX(qla_fw_lock);
2982
2983 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2984         { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
2985         { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
2986         { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
2987         { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2988         { .name = FW_FILE_ISP24XX, },
2989         { .name = FW_FILE_ISP25XX, },
2990         { .name = FW_FILE_ISP81XX, },
2991 };
2992
2993 struct fw_blob *
2994 qla2x00_request_firmware(scsi_qla_host_t *vha)
2995 {
2996         struct qla_hw_data *ha = vha->hw;
2997         struct fw_blob *blob;
2998
2999         blob = NULL;
3000         if (IS_QLA2100(ha)) {
3001                 blob = &qla_fw_blobs[FW_ISP21XX];
3002         } else if (IS_QLA2200(ha)) {
3003                 blob = &qla_fw_blobs[FW_ISP22XX];
3004         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
3005                 blob = &qla_fw_blobs[FW_ISP2300];
3006         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
3007                 blob = &qla_fw_blobs[FW_ISP2322];
3008         } else if (IS_QLA24XX_TYPE(ha)) {
3009                 blob = &qla_fw_blobs[FW_ISP24XX];
3010         } else if (IS_QLA25XX(ha)) {
3011                 blob = &qla_fw_blobs[FW_ISP25XX];
3012         } else if (IS_QLA81XX(ha)) {
3013                 blob = &qla_fw_blobs[FW_ISP81XX];
3014         }
3015
3016         mutex_lock(&qla_fw_lock);
3017         if (blob->fw)
3018                 goto out;
3019
3020         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
3021                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
3022                     "(%s).\n", vha->host_no, blob->name));
3023                 blob->fw = NULL;
3024                 blob = NULL;
3025                 goto out;
3026         }
3027
3028 out:
3029         mutex_unlock(&qla_fw_lock);
3030         return blob;
3031 }
3032
3033 static void
3034 qla2x00_release_firmware(void)
3035 {
3036         int idx;
3037
3038         mutex_lock(&qla_fw_lock);
3039         for (idx = 0; idx < FW_BLOBS; idx++)
3040                 if (qla_fw_blobs[idx].fw)
3041                         release_firmware(qla_fw_blobs[idx].fw);
3042         mutex_unlock(&qla_fw_lock);
3043 }
3044
3045 static pci_ers_result_t
3046 qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
3047 {
3048         switch (state) {
3049         case pci_channel_io_normal:
3050                 return PCI_ERS_RESULT_CAN_RECOVER;
3051         case pci_channel_io_frozen:
3052                 pci_disable_device(pdev);
3053                 return PCI_ERS_RESULT_NEED_RESET;
3054         case pci_channel_io_perm_failure:
3055                 qla2x00_remove_one(pdev);
3056                 return PCI_ERS_RESULT_DISCONNECT;
3057         }
3058         return PCI_ERS_RESULT_NEED_RESET;
3059 }
3060
3061 static pci_ers_result_t
3062 qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
3063 {
3064         int risc_paused = 0;
3065         uint32_t stat;
3066         unsigned long flags;
3067         scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
3068         struct qla_hw_data *ha = base_vha->hw;
3069         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
3070         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
3071
3072         spin_lock_irqsave(&ha->hardware_lock, flags);
3073         if (IS_QLA2100(ha) || IS_QLA2200(ha)){
3074                 stat = RD_REG_DWORD(&reg->hccr);
3075                 if (stat & HCCR_RISC_PAUSE)
3076                         risc_paused = 1;
3077         } else if (IS_QLA23XX(ha)) {
3078                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
3079                 if (stat & HSR_RISC_PAUSED)
3080                         risc_paused = 1;
3081         } else if (IS_FWI2_CAPABLE(ha)) {
3082                 stat = RD_REG_DWORD(&reg24->host_status);
3083                 if (stat & HSRX_RISC_PAUSED)
3084                         risc_paused = 1;
3085         }
3086         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3087
3088         if (risc_paused) {
3089                 qla_printk(KERN_INFO, ha, "RISC paused -- mmio_enabled, "
3090                     "Dumping firmware!\n");
3091                 ha->isp_ops->fw_dump(base_vha, 0);
3092
3093                 return PCI_ERS_RESULT_NEED_RESET;
3094         } else
3095                 return PCI_ERS_RESULT_RECOVERED;
3096 }
3097
3098 static pci_ers_result_t
3099 qla2xxx_pci_slot_reset(struct pci_dev *pdev)
3100 {
3101         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
3102         scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
3103         struct qla_hw_data *ha = base_vha->hw;
3104         int rc;
3105
3106         if (ha->mem_only)
3107                 rc = pci_enable_device_mem(pdev);
3108         else
3109                 rc = pci_enable_device(pdev);
3110
3111         if (rc) {
3112                 qla_printk(KERN_WARNING, ha,
3113                     "Can't re-enable PCI device after reset.\n");
3114
3115                 return ret;
3116         }
3117         pci_set_master(pdev);
3118
3119         if (ha->isp_ops->pci_config(base_vha))
3120                 return ret;
3121
3122         set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
3123         if (qla2x00_abort_isp(base_vha) == QLA_SUCCESS)
3124                 ret =  PCI_ERS_RESULT_RECOVERED;
3125         clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
3126
3127         return ret;
3128 }
3129
3130 static void
3131 qla2xxx_pci_resume(struct pci_dev *pdev)
3132 {
3133         scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
3134         struct qla_hw_data *ha = base_vha->hw;
3135         int ret;
3136
3137         ret = qla2x00_wait_for_hba_online(base_vha);
3138         if (ret != QLA_SUCCESS) {
3139                 qla_printk(KERN_ERR, ha,
3140                     "the device failed to resume I/O "
3141                     "from slot/link_reset");
3142         }
3143         pci_cleanup_aer_uncorrect_error_status(pdev);
3144 }
3145
3146 static struct pci_error_handlers qla2xxx_err_handler = {
3147         .error_detected = qla2xxx_pci_error_detected,
3148         .mmio_enabled = qla2xxx_pci_mmio_enabled,
3149         .slot_reset = qla2xxx_pci_slot_reset,
3150         .resume = qla2xxx_pci_resume,
3151 };
3152
3153 static struct pci_device_id qla2xxx_pci_tbl[] = {
3154         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
3155         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
3156         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
3157         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
3158         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
3159         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
3160         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
3161         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
3162         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
3163         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8432) },
3164         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
3165         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
3166         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) },
3167         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8001) },
3168         { 0 },
3169 };
3170 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
3171
3172 static struct pci_driver qla2xxx_pci_driver = {
3173         .name           = QLA2XXX_DRIVER_NAME,
3174         .driver         = {
3175                 .owner          = THIS_MODULE,
3176         },
3177         .id_table       = qla2xxx_pci_tbl,
3178         .probe          = qla2x00_probe_one,
3179         .remove         = qla2x00_remove_one,
3180         .err_handler    = &qla2xxx_err_handler,
3181 };
3182
3183 /**
3184  * qla2x00_module_init - Module initialization.
3185  **/
3186 static int __init
3187 qla2x00_module_init(void)
3188 {
3189         int ret = 0;
3190
3191         /* Allocate cache for SRBs. */
3192         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
3193             SLAB_HWCACHE_ALIGN, NULL);
3194         if (srb_cachep == NULL) {
3195                 printk(KERN_ERR
3196                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
3197                 return -ENOMEM;
3198         }
3199
3200         /* Derive version string. */
3201         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
3202         if (ql2xextended_error_logging)
3203                 strcat(qla2x00_version_str, "-debug");
3204
3205         qla2xxx_transport_template =
3206             fc_attach_transport(&qla2xxx_transport_functions);
3207         if (!qla2xxx_transport_template) {
3208                 kmem_cache_destroy(srb_cachep);
3209                 return -ENODEV;
3210         }
3211         qla2xxx_transport_vport_template =
3212             fc_attach_transport(&qla2xxx_transport_vport_functions);
3213         if (!qla2xxx_transport_vport_template) {
3214                 kmem_cache_destroy(srb_cachep);
3215                 fc_release_transport(qla2xxx_transport_template);
3216                 return -ENODEV;
3217         }
3218
3219         printk(KERN_INFO "QLogic Fibre Channel HBA Driver: %s\n",
3220             qla2x00_version_str);
3221         ret = pci_register_driver(&qla2xxx_pci_driver);
3222         if (ret) {
3223                 kmem_cache_destroy(srb_cachep);
3224                 fc_release_transport(qla2xxx_transport_template);
3225                 fc_release_transport(qla2xxx_transport_vport_template);
3226         }
3227         return ret;
3228 }
3229
3230 /**
3231  * qla2x00_module_exit - Module cleanup.
3232  **/
3233 static void __exit
3234 qla2x00_module_exit(void)
3235 {
3236         pci_unregister_driver(&qla2xxx_pci_driver);
3237         qla2x00_release_firmware();
3238         kmem_cache_destroy(srb_cachep);
3239         fc_release_transport(qla2xxx_transport_template);
3240         fc_release_transport(qla2xxx_transport_vport_template);
3241 }
3242
3243 module_init(qla2x00_module_init);
3244 module_exit(qla2x00_module_exit);
3245
3246 MODULE_AUTHOR("QLogic Corporation");
3247 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
3248 MODULE_LICENSE("GPL");
3249 MODULE_VERSION(QLA2XXX_VERSION);
3250 MODULE_FIRMWARE(FW_FILE_ISP21XX);
3251 MODULE_FIRMWARE(FW_FILE_ISP22XX);
3252 MODULE_FIRMWARE(FW_FILE_ISP2300);
3253 MODULE_FIRMWARE(FW_FILE_ISP2322);
3254 MODULE_FIRMWARE(FW_FILE_ISP24XX);
3255 MODULE_FIRMWARE(FW_FILE_ISP25XX);
3256 MODULE_FIRMWARE(FW_FILE_ISP81XX);