drivers/scsi/bfa/bfad_im.c

   1 /*
   2  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 /*
  19  *  bfad_im.c Linux driver IM module.
  20  */
  21
  22 #include <linux/export.h>
  23
  24 #include "bfad_drv.h"
  25 #include "bfad_im.h"
  26 #include "bfa_fcs.h"
  27
  28 BFA_TRC_FILE(LDRV, IM);
  29
  30 DEFINE_IDR(bfad_im_port_index);
  31 struct scsi_transport_template *bfad_im_scsi_transport_template;
  32 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
  33 static void bfad_im_itnim_work_handler(struct work_struct *work);
  34 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
  35 static int bfad_im_slave_alloc(struct scsi_device *sdev);
  36 static void bfad_im_fc_rport_add(struct bfad_im_port_s  *im_port,
  37                                 struct bfad_itnim_s *itnim);
  38
  39 void
  40 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
  41                         enum bfi_ioim_status io_status, u8 scsi_status,
  42                         int sns_len, u8 *sns_info, s32 residue)
  43 {
  44         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
  45         struct bfad_s         *bfad = drv;
  46         struct bfad_itnim_data_s *itnim_data;
  47         struct bfad_itnim_s *itnim;
  48         u8         host_status = DID_OK;
  49
  50         switch (io_status) {
  51         case BFI_IOIM_STS_OK:
  52                 bfa_trc(bfad, scsi_status);
  53                 scsi_set_resid(cmnd, 0);
  54
  55                 if (sns_len > 0) {
  56                         bfa_trc(bfad, sns_len);
  57                         if (sns_len > SCSI_SENSE_BUFFERSIZE)
  58                                 sns_len = SCSI_SENSE_BUFFERSIZE;
  59                         memcpy(cmnd->sense_buffer, sns_info, sns_len);
  60                 }
  61
  62                 if (residue > 0) {
  63                         bfa_trc(bfad, residue);
  64                         scsi_set_resid(cmnd, residue);
  65                         if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
  66                                 (scsi_bufflen(cmnd) - residue) <
  67                                         cmnd->underflow) {
  68                                 bfa_trc(bfad, 0);
  69                                 host_status = DID_ERROR;
  70                         }
  71                 }
  72                 cmnd->result = ScsiResult(host_status, scsi_status);
  73
  74                 break;
  75
  76         case BFI_IOIM_STS_ABORTED:
  77         case BFI_IOIM_STS_TIMEDOUT:
  78         case BFI_IOIM_STS_PATHTOV:
  79         default:
  80                 host_status = DID_ERROR;
  81                 cmnd->result = ScsiResult(host_status, 0);
  82         }
  83
  84         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
  85         if (cmnd->device->host != NULL)
  86                 scsi_dma_unmap(cmnd);
  87
  88         cmnd->host_scribble = NULL;
  89         bfa_trc(bfad, cmnd->result);
  90
  91         itnim_data = cmnd->device->hostdata;
  92         if (itnim_data) {
  93                 itnim = itnim_data->itnim;
  94                 if (!cmnd->result && itnim &&
  95                          (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
  96                         /* Queue depth adjustment for good status completion */
  97                         bfad_ramp_up_qdepth(itnim, cmnd->device);
  98                 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
  99                         /* qfull handling */
 100                         bfad_handle_qfull(itnim, cmnd->device);
 101                 }
 102         }
 103
 104         cmnd->scsi_done(cmnd);
 105 }
 106
 107 void
 108 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
 109 {
 110         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 111         struct bfad_itnim_data_s *itnim_data;
 112         struct bfad_itnim_s *itnim;
 113
 114         cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
 115
 116         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 117         if (cmnd->device->host != NULL)
 118                 scsi_dma_unmap(cmnd);
 119
 120         cmnd->host_scribble = NULL;
 121
 122         /* Queue depth adjustment */
 123         if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
 124                 itnim_data = cmnd->device->hostdata;
 125                 if (itnim_data) {
 126                         itnim = itnim_data->itnim;
 127                         if (itnim)
 128                                 bfad_ramp_up_qdepth(itnim, cmnd->device);
 129                 }
 130         }
 131
 132         cmnd->scsi_done(cmnd);
 133 }
 134
 135 void
 136 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
 137 {
 138         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 139         struct bfad_s         *bfad = drv;
 140
 141         cmnd->result = ScsiResult(DID_ERROR, 0);
 142
 143         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 144         if (cmnd->device->host != NULL)
 145                 scsi_dma_unmap(cmnd);
 146
 147         bfa_trc(bfad, cmnd->result);
 148         cmnd->host_scribble = NULL;
 149 }
 150
 151 void
 152 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
 153                    enum bfi_tskim_status tsk_status)
 154 {
 155         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
 156         wait_queue_head_t *wq;
 157
 158         cmnd->SCp.Status |= tsk_status << 1;
 159         set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
 160         wq = (wait_queue_head_t *) cmnd->SCp.ptr;
 161         cmnd->SCp.ptr = NULL;
 162
 163         if (wq)
 164                 wake_up(wq);
 165 }
 166
 167 /*
 168  *  Scsi_Host_template SCSI host template
 169  */
 170 /*
 171  * Scsi_Host template entry, returns BFAD PCI info.
 172  */
 173 static const char *
 174 bfad_im_info(struct Scsi_Host *shost)
 175 {
 176         static char     bfa_buf[256];
 177         struct bfad_im_port_s *im_port =
 178                         (struct bfad_im_port_s *) shost->hostdata[0];
 179         struct bfad_s *bfad = im_port->bfad;
 180
 181         memset(bfa_buf, 0, sizeof(bfa_buf));
 182         snprintf(bfa_buf, sizeof(bfa_buf),
 183                 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
 184                 bfad->pci_name, BFAD_DRIVER_VERSION);
 185
 186         return bfa_buf;
 187 }
 188
 189 /*
 190  * Scsi_Host template entry, aborts the specified SCSI command.
 191  *
 192  * Returns: SUCCESS or FAILED.
 193  */
 194 static int
 195 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
 196 {
 197         struct Scsi_Host *shost = cmnd->device->host;
 198         struct bfad_im_port_s *im_port =
 199                         (struct bfad_im_port_s *) shost->hostdata[0];
 200         struct bfad_s         *bfad = im_port->bfad;
 201         struct bfa_ioim_s *hal_io;
 202         unsigned long   flags;
 203         u32        timeout;
 204         int             rc = FAILED;
 205
 206         spin_lock_irqsave(&bfad->bfad_lock, flags);
 207         hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 208         if (!hal_io) {
 209                 /* IO has been completed, retrun success */
 210                 rc = SUCCESS;
 211                 goto out;
 212         }
 213         if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
 214                 rc = FAILED;
 215                 goto out;
 216         }
 217
 218         bfa_trc(bfad, hal_io->iotag);
 219         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 220                 "scsi%d: abort cmnd %p iotag %x\n",
 221                 im_port->shost->host_no, cmnd, hal_io->iotag);
 222         (void) bfa_ioim_abort(hal_io);
 223         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 224
 225         /* Need to wait until the command get aborted */
 226         timeout = 10;
 227         while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
 228                 set_current_state(TASK_UNINTERRUPTIBLE);
 229                 schedule_timeout(timeout);
 230                 if (timeout < 4 * HZ)
 231                         timeout *= 2;
 232         }
 233
 234         cmnd->scsi_done(cmnd);
 235         bfa_trc(bfad, hal_io->iotag);
 236         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 237                 "scsi%d: complete abort 0x%p iotag 0x%x\n",
 238                 im_port->shost->host_no, cmnd, hal_io->iotag);
 239         return SUCCESS;
 240 out:
 241         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 242         return rc;
 243 }
 244
 245 static bfa_status_t
 246 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
 247                      struct bfad_itnim_s *itnim)
 248 {
 249         struct bfa_tskim_s *tskim;
 250         struct bfa_itnim_s *bfa_itnim;
 251         bfa_status_t    rc = BFA_STATUS_OK;
 252         struct scsi_lun scsilun;
 253
 254         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 255         if (!tskim) {
 256                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 257                         "target reset, fail to allocate tskim\n");
 258                 rc = BFA_STATUS_FAILED;
 259                 goto out;
 260         }
 261
 262         /*
 263          * Set host_scribble to NULL to avoid aborting a task command if
 264          * happens.
 265          */
 266         cmnd->host_scribble = NULL;
 267         cmnd->SCp.Status = 0;
 268         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 269         memset(&scsilun, 0, sizeof(scsilun));
 270         bfa_tskim_start(tskim, bfa_itnim, scsilun,
 271                             FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
 272 out:
 273         return rc;
 274 }
 275
 276 /*
 277  * Scsi_Host template entry, resets a LUN and abort its all commands.
 278  *
 279  * Returns: SUCCESS or FAILED.
 280  *
 281  */
 282 static int
 283 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
 284 {
 285         struct Scsi_Host *shost = cmnd->device->host;
 286         struct bfad_im_port_s *im_port =
 287                         (struct bfad_im_port_s *) shost->hostdata[0];
 288         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
 289         struct bfad_s         *bfad = im_port->bfad;
 290         struct bfa_tskim_s *tskim;
 291         struct bfad_itnim_s   *itnim;
 292         struct bfa_itnim_s *bfa_itnim;
 293         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 294         int             rc = SUCCESS;
 295         unsigned long   flags;
 296         enum bfi_tskim_status task_status;
 297         struct scsi_lun scsilun;
 298
 299         spin_lock_irqsave(&bfad->bfad_lock, flags);
 300         itnim = itnim_data->itnim;
 301         if (!itnim) {
 302                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 303                 rc = FAILED;
 304                 goto out;
 305         }
 306
 307         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 308         if (!tskim) {
 309                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 310                                 "LUN reset, fail to allocate tskim");
 311                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 312                 rc = FAILED;
 313                 goto out;
 314         }
 315
 316         /*
 317          * Set host_scribble to NULL to avoid aborting a task command
 318          * if happens.
 319          */
 320         cmnd->host_scribble = NULL;
 321         cmnd->SCp.ptr = (char *)&wq;
 322         cmnd->SCp.Status = 0;
 323         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 324         int_to_scsilun(cmnd->device->lun, &scsilun);
 325         bfa_tskim_start(tskim, bfa_itnim, scsilun,
 326                             FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
 327         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 328
 329         wait_event(wq, test_bit(IO_DONE_BIT,
 330                         (unsigned long *)&cmnd->SCp.Status));
 331
 332         task_status = cmnd->SCp.Status >> 1;
 333         if (task_status != BFI_TSKIM_STS_OK) {
 334                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 335                         "LUN reset failure, status: %d\n", task_status);
 336                 rc = FAILED;
 337         }
 338
 339 out:
 340         return rc;
 341 }
 342
 343 /*
 344  * Scsi_Host template entry, resets the bus and abort all commands.
 345  */
 346 static int
 347 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
 348 {
 349         struct Scsi_Host *shost = cmnd->device->host;
 350         struct bfad_im_port_s *im_port =
 351                                 (struct bfad_im_port_s *) shost->hostdata[0];
 352         struct bfad_s         *bfad = im_port->bfad;
 353         struct bfad_itnim_s   *itnim;
 354         unsigned long   flags;
 355         u32        i, rc, err_cnt = 0;
 356         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 357         enum bfi_tskim_status task_status;
 358
 359         spin_lock_irqsave(&bfad->bfad_lock, flags);
 360         for (i = 0; i < MAX_FCP_TARGET; i++) {
 361                 itnim = bfad_get_itnim(im_port, i);
 362                 if (itnim) {
 363                         cmnd->SCp.ptr = (char *)&wq;
 364                         rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
 365                         if (rc != BFA_STATUS_OK) {
 366                                 err_cnt++;
 367                                 continue;
 368                         }
 369
 370                         /* wait target reset to complete */
 371                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 372                         wait_event(wq, test_bit(IO_DONE_BIT,
 373                                         (unsigned long *)&cmnd->SCp.Status));
 374                         spin_lock_irqsave(&bfad->bfad_lock, flags);
 375
 376                         task_status = cmnd->SCp.Status >> 1;
 377                         if (task_status != BFI_TSKIM_STS_OK) {
 378                                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 379                                         "target reset failure,"
 380                                         " status: %d\n", task_status);
 381                                 err_cnt++;
 382                         }
 383                 }
 384         }
 385         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 386
 387         if (err_cnt)
 388                 return FAILED;
 389
 390         return SUCCESS;
 391 }
 392
 393 /*
 394  * Scsi_Host template entry slave_destroy.
 395  */
 396 static void
 397 bfad_im_slave_destroy(struct scsi_device *sdev)
 398 {
 399         sdev->hostdata = NULL;
 400         return;
 401 }
 402
 403 /*
 404  *  BFA FCS itnim callbacks
 405  */
 406
 407 /*
 408  * BFA FCS itnim alloc callback, after successful PRLI
 409  * Context: Interrupt
 410  */
 411 void
 412 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
 413                     struct bfad_itnim_s **itnim_drv)
 414 {
 415         *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
 416         if (*itnim_drv == NULL)
 417                 return;
 418
 419         (*itnim_drv)->im = bfad->im;
 420         *itnim = &(*itnim_drv)->fcs_itnim;
 421         (*itnim_drv)->state = ITNIM_STATE_NONE;
 422
 423         /*
 424          * Initiaze the itnim_work
 425          */
 426         INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
 427         bfad->bfad_flags |= BFAD_RPORT_ONLINE;
 428 }
 429
 430 /*
 431  * BFA FCS itnim free callback.
 432  * Context: Interrupt. bfad_lock is held
 433  */
 434 void
 435 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
 436 {
 437         struct bfad_port_s    *port;
 438         wwn_t wwpn;
 439         u32 fcid;
 440         char wwpn_str[32], fcid_str[16];
 441         struct bfad_im_s        *im = itnim_drv->im;
 442
 443         /* online to free state transtion should not happen */
 444         WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
 445
 446         itnim_drv->queue_work = 1;
 447         /* offline request is not yet done, use the same request to free */
 448         if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
 449                 itnim_drv->queue_work = 0;
 450
 451         itnim_drv->state = ITNIM_STATE_FREE;
 452         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 453         itnim_drv->im_port = port->im_port;
 454         wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
 455         fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
 456         wwn2str(wwpn_str, wwpn);
 457         fcid2str(fcid_str, fcid);
 458         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 459                 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
 460                 port->im_port->shost->host_no,
 461                 fcid_str, wwpn_str);
 462
 463         /* ITNIM processing */
 464         if (itnim_drv->queue_work)
 465                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 466 }
 467
 468 /*
 469  * BFA FCS itnim online callback.
 470  * Context: Interrupt. bfad_lock is held
 471  */
 472 void
 473 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
 474 {
 475         struct bfad_port_s    *port;
 476         struct bfad_im_s        *im = itnim_drv->im;
 477
 478         itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
 479         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 480         itnim_drv->state = ITNIM_STATE_ONLINE;
 481         itnim_drv->queue_work = 1;
 482         itnim_drv->im_port = port->im_port;
 483
 484         /* ITNIM processing */
 485         if (itnim_drv->queue_work)
 486                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 487 }
 488
 489 /*
 490  * BFA FCS itnim offline callback.
 491  * Context: Interrupt. bfad_lock is held
 492  */
 493 void
 494 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
 495 {
 496         struct bfad_port_s    *port;
 497         struct bfad_s *bfad;
 498         struct bfad_im_s        *im = itnim_drv->im;
 499
 500         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 501         bfad = port->bfad;
 502         if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
 503                  (port->flags & BFAD_PORT_DELETE)) {
 504                 itnim_drv->state = ITNIM_STATE_OFFLINE;
 505                 return;
 506         }
 507         itnim_drv->im_port = port->im_port;
 508         itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
 509         itnim_drv->queue_work = 1;
 510
 511         /* ITNIM processing */
 512         if (itnim_drv->queue_work)
 513                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 514 }
 515
 516 /*
 517  * Allocate a Scsi_Host for a port.
 518  */
 519 int
 520 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
 521                         struct device *dev)
 522 {
 523         int error = 1;
 524
 525         mutex_lock(&bfad_mutex);
 526         if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
 527                 mutex_unlock(&bfad_mutex);
 528                 printk(KERN_WARNING "idr_pre_get failure\n");
 529                 goto out;
 530         }
 531
 532         error = idr_get_new(&bfad_im_port_index, im_port,
 533                                          &im_port->idr_id);
 534         if (error) {
 535                 mutex_unlock(&bfad_mutex);
 536                 printk(KERN_WARNING "idr_get_new failure\n");
 537                 goto out;
 538         }
 539
 540         mutex_unlock(&bfad_mutex);
 541
 542         im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
 543         if (!im_port->shost) {
 544                 error = 1;
 545                 goto out_free_idr;
 546         }
 547
 548         im_port->shost->hostdata[0] = (unsigned long)im_port;
 549         im_port->shost->unique_id = im_port->idr_id;
 550         im_port->shost->this_id = -1;
 551         im_port->shost->max_id = MAX_FCP_TARGET;
 552         im_port->shost->max_lun = MAX_FCP_LUN;
 553         im_port->shost->max_cmd_len = 16;
 554         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 555         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 556                 im_port->shost->transportt = bfad_im_scsi_transport_template;
 557         else
 558                 im_port->shost->transportt =
 559                                 bfad_im_scsi_vport_transport_template;
 560
 561         error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
 562         if (error) {
 563                 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
 564                 goto out_fc_rel;
 565         }
 566
 567         return 0;
 568
 569 out_fc_rel:
 570         scsi_host_put(im_port->shost);
 571         im_port->shost = NULL;
 572 out_free_idr:
 573         mutex_lock(&bfad_mutex);
 574         idr_remove(&bfad_im_port_index, im_port->idr_id);
 575         mutex_unlock(&bfad_mutex);
 576 out:
 577         return error;
 578 }
 579
 580 void
 581 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 582 {
 583         bfa_trc(bfad, bfad->inst_no);
 584         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
 585                         im_port->shost->host_no);
 586
 587         fc_remove_host(im_port->shost);
 588
 589         scsi_remove_host(im_port->shost);
 590         scsi_host_put(im_port->shost);
 591
 592         mutex_lock(&bfad_mutex);
 593         idr_remove(&bfad_im_port_index, im_port->idr_id);
 594         mutex_unlock(&bfad_mutex);
 595 }
 596
 597 static void
 598 bfad_im_port_delete_handler(struct work_struct *work)
 599 {
 600         struct bfad_im_port_s *im_port =
 601                 container_of(work, struct bfad_im_port_s, port_delete_work);
 602
 603         if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
 604                 im_port->flags |= BFAD_PORT_DELETE;
 605                 fc_vport_terminate(im_port->fc_vport);
 606         }
 607 }
 608
 609 bfa_status_t
 610 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 611 {
 612         int             rc = BFA_STATUS_OK;
 613         struct bfad_im_port_s *im_port;
 614
 615         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 616         if (im_port == NULL) {
 617                 rc = BFA_STATUS_ENOMEM;
 618                 goto ext;
 619         }
 620         port->im_port = im_port;
 621         im_port->port = port;
 622         im_port->bfad = bfad;
 623
 624         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 625         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 626         INIT_LIST_HEAD(&im_port->binding_list);
 627
 628 ext:
 629         return rc;
 630 }
 631
 632 void
 633 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 634 {
 635         struct bfad_im_port_s *im_port = port->im_port;
 636
 637         queue_work(bfad->im->drv_workq,
 638                                 &im_port->port_delete_work);
 639 }
 640
 641 void
 642 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 643 {
 644         struct bfad_fcp_binding *bp, *bp_new;
 645         unsigned long flags;
 646         struct bfad_s *bfad =  im_port->bfad;
 647
 648         spin_lock_irqsave(&bfad->bfad_lock, flags);
 649         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 650                                         list_entry) {
 651                 list_del(&bp->list_entry);
 652                 kfree(bp);
 653         }
 654
 655         /* the itnim_mapped_list must be empty at this time */
 656         WARN_ON(!list_empty(&im_port->itnim_mapped_list));
 657
 658         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 659 }
 660
 661 static void bfad_aen_im_notify_handler(struct work_struct *work)
 662 {
 663         struct bfad_im_s *im =
 664                 container_of(work, struct bfad_im_s, aen_im_notify_work);
 665         struct bfa_aen_entry_s *aen_entry;
 666         struct bfad_s *bfad = im->bfad;
 667         struct Scsi_Host *shost = bfad->pport.im_port->shost;
 668         void *event_data;
 669         unsigned long flags;
 670
 671         while (!list_empty(&bfad->active_aen_q)) {
 672                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 673                 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
 674                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 675                 event_data = (char *)aen_entry + sizeof(struct list_head);
 676                 fc_host_post_vendor_event(shost, fc_get_event_number(),
 677                                 sizeof(struct bfa_aen_entry_s) -
 678                                 sizeof(struct list_head),
 679                                 (char *)event_data, BFAD_NL_VENDOR_ID);
 680                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 681                 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
 682                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 683         }
 684 }
 685
 686 bfa_status_t
 687 bfad_im_probe(struct bfad_s *bfad)
 688 {
 689         struct bfad_im_s      *im;
 690
 691         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 692         if (im == NULL)
 693                 return BFA_STATUS_ENOMEM;
 694
 695         bfad->im = im;
 696         im->bfad = bfad;
 697
 698         if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
 699                 kfree(im);
 700                 return BFA_STATUS_FAILED;
 701         }
 702
 703         INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
 704         return BFA_STATUS_OK;
 705 }
 706
 707 void
 708 bfad_im_probe_undo(struct bfad_s *bfad)
 709 {
 710         if (bfad->im) {
 711                 bfad_destroy_workq(bfad->im);
 712                 kfree(bfad->im);
 713                 bfad->im = NULL;
 714         }
 715 }
 716
 717 struct Scsi_Host *
 718 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 719 {
 720         struct scsi_host_template *sht;
 721
 722         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 723                 sht = &bfad_im_scsi_host_template;
 724         else
 725                 sht = &bfad_im_vport_template;
 726
 727         if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
 728                 sht->max_sectors = max_xfer_size << 1;
 729
 730         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 731
 732         return scsi_host_alloc(sht, sizeof(unsigned long));
 733 }
 734
 735 void
 736 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 737 {
 738         if (!(im_port->flags & BFAD_PORT_DELETE))
 739                 flush_workqueue(bfad->im->drv_workq);
 740         bfad_im_scsi_host_free(im_port->bfad, im_port);
 741         bfad_im_port_clean(im_port);
 742         kfree(im_port);
 743 }
 744
 745 void
 746 bfad_destroy_workq(struct bfad_im_s *im)
 747 {
 748         if (im && im->drv_workq) {
 749                 flush_workqueue(im->drv_workq);
 750                 destroy_workqueue(im->drv_workq);
 751                 im->drv_workq = NULL;
 752         }
 753 }
 754
 755 bfa_status_t
 756 bfad_thread_workq(struct bfad_s *bfad)
 757 {
 758         struct bfad_im_s      *im = bfad->im;
 759
 760         bfa_trc(bfad, 0);
 761         snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
 762                  bfad->inst_no);
 763         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 764         if (!im->drv_workq)
 765                 return BFA_STATUS_FAILED;
 766
 767         return BFA_STATUS_OK;
 768 }
 769
 770 /*
 771  * Scsi_Host template entry.
 772  *
 773  * Description:
 774  * OS entry point to adjust the queue_depths on a per-device basis.
 775  * Called once per device during the bus scan.
 776  * Return non-zero if fails.
 777  */
 778 static int
 779 bfad_im_slave_configure(struct scsi_device *sdev)
 780 {
 781         if (sdev->tagged_supported)
 782                 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
 783         else
 784                 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
 785
 786         return 0;
 787 }
 788
 789 struct scsi_host_template bfad_im_scsi_host_template = {
 790         .module = THIS_MODULE,
 791         .name = BFAD_DRIVER_NAME,
 792         .info = bfad_im_info,
 793         .queuecommand = bfad_im_queuecommand,
 794         .eh_abort_handler = bfad_im_abort_handler,
 795         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 796         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 797
 798         .slave_alloc = bfad_im_slave_alloc,
 799         .slave_configure = bfad_im_slave_configure,
 800         .slave_destroy = bfad_im_slave_destroy,
 801
 802         .this_id = -1,
 803         .sg_tablesize = BFAD_IO_MAX_SGE,
 804         .cmd_per_lun = 3,
 805         .use_clustering = ENABLE_CLUSTERING,
 806         .shost_attrs = bfad_im_host_attrs,
 807         .max_sectors = BFAD_MAX_SECTORS,
 808         .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
 809 };
 810
 811 struct scsi_host_template bfad_im_vport_template = {
 812         .module = THIS_MODULE,
 813         .name = BFAD_DRIVER_NAME,
 814         .info = bfad_im_info,
 815         .queuecommand = bfad_im_queuecommand,
 816         .eh_abort_handler = bfad_im_abort_handler,
 817         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 818         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 819
 820         .slave_alloc = bfad_im_slave_alloc,
 821         .slave_configure = bfad_im_slave_configure,
 822         .slave_destroy = bfad_im_slave_destroy,
 823
 824         .this_id = -1,
 825         .sg_tablesize = BFAD_IO_MAX_SGE,
 826         .cmd_per_lun = 3,
 827         .use_clustering = ENABLE_CLUSTERING,
 828         .shost_attrs = bfad_im_vport_attrs,
 829         .max_sectors = BFAD_MAX_SECTORS,
 830 };
 831
 832 bfa_status_t
 833 bfad_im_module_init(void)
 834 {
 835         bfad_im_scsi_transport_template =
 836                 fc_attach_transport(&bfad_im_fc_function_template);
 837         if (!bfad_im_scsi_transport_template)
 838                 return BFA_STATUS_ENOMEM;
 839
 840         bfad_im_scsi_vport_transport_template =
 841                 fc_attach_transport(&bfad_im_vport_fc_function_template);
 842         if (!bfad_im_scsi_vport_transport_template) {
 843                 fc_release_transport(bfad_im_scsi_transport_template);
 844                 return BFA_STATUS_ENOMEM;
 845         }
 846
 847         return BFA_STATUS_OK;
 848 }
 849
 850 void
 851 bfad_im_module_exit(void)
 852 {
 853         if (bfad_im_scsi_transport_template)
 854                 fc_release_transport(bfad_im_scsi_transport_template);
 855
 856         if (bfad_im_scsi_vport_transport_template)
 857                 fc_release_transport(bfad_im_scsi_vport_transport_template);
 858 }
 859
 860 void
 861 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 862 {
 863         struct scsi_device *tmp_sdev;
 864
 865         if (((jiffies - itnim->last_ramp_up_time) >
 866                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 867                 ((jiffies - itnim->last_queue_full_time) >
 868                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 869                 shost_for_each_device(tmp_sdev, sdev->host) {
 870                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 871                                 if (tmp_sdev->id != sdev->id)
 872                                         continue;
 873                                 if (tmp_sdev->ordered_tags)
 874                                         scsi_adjust_queue_depth(tmp_sdev,
 875                                                 MSG_ORDERED_TAG,
 876                                                 tmp_sdev->queue_depth + 1);
 877                                 else
 878                                         scsi_adjust_queue_depth(tmp_sdev,
 879                                                 MSG_SIMPLE_TAG,
 880                                                 tmp_sdev->queue_depth + 1);
 881
 882                                 itnim->last_ramp_up_time = jiffies;
 883                         }
 884                 }
 885         }
 886 }
 887
 888 void
 889 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 890 {
 891         struct scsi_device *tmp_sdev;
 892
 893         itnim->last_queue_full_time = jiffies;
 894
 895         shost_for_each_device(tmp_sdev, sdev->host) {
 896                 if (tmp_sdev->id != sdev->id)
 897                         continue;
 898                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 899         }
 900 }
 901
 902 struct bfad_itnim_s *
 903 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
 904 {
 905         struct bfad_itnim_s   *itnim = NULL;
 906
 907         /* Search the mapped list for this target ID */
 908         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 909                 if (id == itnim->scsi_tgt_id)
 910                         return itnim;
 911         }
 912
 913         return NULL;
 914 }
 915
 916 /*
 917  * Function is invoked from the SCSI Host Template slave_alloc() entry point.
 918  * Has the logic to query the LUN Mask database to check if this LUN needs to
 919  * be made visible to the SCSI mid-layer or not.
 920  *
 921  * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
 922  * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
 923  */
 924 static int
 925 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
 926                                   struct fc_rport *rport)
 927 {
 928         struct bfad_itnim_data_s *itnim_data =
 929                                 (struct bfad_itnim_data_s *) rport->dd_data;
 930         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 931         struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
 932         struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
 933         int i = 0, ret = -ENXIO;
 934
 935         for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
 936                 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
 937                     scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
 938                     lun_list[i].rp_tag == bfa_rport->rport_tag &&
 939                     lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
 940                         ret = BFA_STATUS_OK;
 941                         break;
 942                 }
 943         }
 944         return ret;
 945 }
 946
 947 /*
 948  * Scsi_Host template entry slave_alloc
 949  */
 950 static int
 951 bfad_im_slave_alloc(struct scsi_device *sdev)
 952 {
 953         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 954         struct bfad_itnim_data_s *itnim_data =
 955                                 (struct bfad_itnim_data_s *) rport->dd_data;
 956         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 957
 958         if (!rport || fc_remote_port_chkready(rport))
 959                 return -ENXIO;
 960
 961         if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
 962                 /*
 963                  * We should not mask LUN 0 - since this will translate
 964                  * to no LUN / TARGET for SCSI ml resulting no scan.
 965                  */
 966                 if (sdev->lun == 0) {
 967                         sdev->sdev_bflags |= BLIST_NOREPORTLUN |
 968                                              BLIST_SPARSELUN;
 969                         goto done;
 970                 }
 971
 972                 /*
 973                  * Query LUN Mask configuration - to expose this LUN
 974                  * to the SCSI mid-layer or to mask it.
 975                  */
 976                 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
 977                                                         BFA_STATUS_OK)
 978                         return -ENXIO;
 979         }
 980 done:
 981         sdev->hostdata = rport->dd_data;
 982
 983         return 0;
 984 }
 985
 986 u32
 987 bfad_im_supported_speeds(struct bfa_s *bfa)
 988 {
 989         struct bfa_ioc_attr_s *ioc_attr;
 990         u32 supported_speed = 0;
 991
 992         ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
 993         if (!ioc_attr)
 994                 return 0;
 995
 996         bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
 997         if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
 998                 supported_speed |=  FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
 999                                 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1000         else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1001                 if (ioc_attr->adapter_attr.is_mezz) {
1002                         supported_speed |= FC_PORTSPEED_8GBIT |
1003                                 FC_PORTSPEED_4GBIT |
1004                                 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1005                 } else {
1006                         supported_speed |= FC_PORTSPEED_8GBIT |
1007                                 FC_PORTSPEED_4GBIT |
1008                                 FC_PORTSPEED_2GBIT;
1009                 }
1010         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1011                 supported_speed |=  FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1012                                 FC_PORTSPEED_1GBIT;
1013         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1014                 supported_speed |= FC_PORTSPEED_10GBIT;
1015         }
1016         kfree(ioc_attr);
1017         return supported_speed;
1018 }
1019
1020 void
1021 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1022 {
1023         struct Scsi_Host *host = im_port->shost;
1024         struct bfad_s         *bfad = im_port->bfad;
1025         struct bfad_port_s    *port = im_port->port;
1026         char symname[BFA_SYMNAME_MAXLEN];
1027         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1028
1029         fc_host_node_name(host) =
1030                 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1031         fc_host_port_name(host) =
1032                 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1033         fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1034
1035         fc_host_supported_classes(host) = FC_COS_CLASS3;
1036
1037         memset(fc_host_supported_fc4s(host), 0,
1038                sizeof(fc_host_supported_fc4s(host)));
1039         if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1040                 /* For FCP type 0x08 */
1041                 fc_host_supported_fc4s(host)[2] = 1;
1042         /* For fibre channel services type 0x20 */
1043         fc_host_supported_fc4s(host)[7] = 1;
1044
1045         strncpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1046                 BFA_SYMNAME_MAXLEN);
1047         sprintf(fc_host_symbolic_name(host), "%s", symname);
1048
1049         fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1050         fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1051 }
1052
1053 static void
1054 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1055 {
1056         struct fc_rport_identifiers rport_ids;
1057         struct fc_rport *fc_rport;
1058         struct bfad_itnim_data_s *itnim_data;
1059
1060         rport_ids.node_name =
1061                 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1062         rport_ids.port_name =
1063                 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1064         rport_ids.port_id =
1065                 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1066         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1067
1068         itnim->fc_rport = fc_rport =
1069                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1070
1071         if (!fc_rport)
1072                 return;
1073
1074         fc_rport->maxframe_size =
1075                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1076         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1077
1078         itnim_data = fc_rport->dd_data;
1079         itnim_data->itnim = itnim;
1080
1081         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1082
1083         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1084                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1085
1086         if ((fc_rport->scsi_target_id != -1)
1087             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1088                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1089
1090         itnim->channel = fc_rport->channel;
1091
1092         return;
1093 }
1094
1095 /*
1096  * Work queue handler using FC transport service
1097 * Context: kernel
1098  */
1099 static void
1100 bfad_im_itnim_work_handler(struct work_struct *work)
1101 {
1102         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1103                                                         itnim_work);
1104         struct bfad_im_s      *im = itnim->im;
1105         struct bfad_s         *bfad = im->bfad;
1106         struct bfad_im_port_s *im_port;
1107         unsigned long   flags;
1108         struct fc_rport *fc_rport;
1109         wwn_t wwpn;
1110         u32 fcid;
1111         char wwpn_str[32], fcid_str[16];
1112
1113         spin_lock_irqsave(&bfad->bfad_lock, flags);
1114         im_port = itnim->im_port;
1115         bfa_trc(bfad, itnim->state);
1116         switch (itnim->state) {
1117         case ITNIM_STATE_ONLINE:
1118                 if (!itnim->fc_rport) {
1119                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1120                         bfad_im_fc_rport_add(im_port, itnim);
1121                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1122                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1123                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1124                         wwn2str(wwpn_str, wwpn);
1125                         fcid2str(fcid_str, fcid);
1126                         list_add_tail(&itnim->list_entry,
1127                                 &im_port->itnim_mapped_list);
1128                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1129                                 "ITNIM ONLINE Target: %d:0:%d "
1130                                 "FCID: %s WWPN: %s\n",
1131                                 im_port->shost->host_no,
1132                                 itnim->scsi_tgt_id,
1133                                 fcid_str, wwpn_str);
1134                 } else {
1135                         printk(KERN_WARNING
1136                                 "%s: itnim %llx is already in online state\n",
1137                                 __func__,
1138                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1139                 }
1140
1141                 break;
1142         case ITNIM_STATE_OFFLINE_PENDING:
1143                 itnim->state = ITNIM_STATE_OFFLINE;
1144                 if (itnim->fc_rport) {
1145                         fc_rport = itnim->fc_rport;
1146                         ((struct bfad_itnim_data_s *)
1147                                 fc_rport->dd_data)->itnim = NULL;
1148                         itnim->fc_rport = NULL;
1149                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1150                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1151                                 fc_rport->dev_loss_tmo =
1152                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1153                                 fc_remote_port_delete(fc_rport);
1154                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1155                         }
1156                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1157                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1158                         wwn2str(wwpn_str, wwpn);
1159                         fcid2str(fcid_str, fcid);
1160                         list_del(&itnim->list_entry);
1161                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1162                                 "ITNIM OFFLINE Target: %d:0:%d "
1163                                 "FCID: %s WWPN: %s\n",
1164                                 im_port->shost->host_no,
1165                                 itnim->scsi_tgt_id,
1166                                 fcid_str, wwpn_str);
1167                 }
1168                 break;
1169         case ITNIM_STATE_FREE:
1170                 if (itnim->fc_rport) {
1171                         fc_rport = itnim->fc_rport;
1172                         ((struct bfad_itnim_data_s *)
1173                                 fc_rport->dd_data)->itnim = NULL;
1174                         itnim->fc_rport = NULL;
1175                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1176                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1177                                 fc_rport->dev_loss_tmo =
1178                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1179                                 fc_remote_port_delete(fc_rport);
1180                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1181                         }
1182                         list_del(&itnim->list_entry);
1183                 }
1184
1185                 kfree(itnim);
1186                 break;
1187         default:
1188                 WARN_ON(1);
1189                 break;
1190         }
1191
1192         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1193 }
1194
1195 /*
1196  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1197  */
1198 static int
1199 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1200 {
1201         struct bfad_im_port_s *im_port =
1202                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1203         struct bfad_s         *bfad = im_port->bfad;
1204         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1205         struct bfad_itnim_s   *itnim;
1206         struct bfa_ioim_s *hal_io;
1207         unsigned long   flags;
1208         int             rc;
1209         int       sg_cnt = 0;
1210         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1211
1212         rc = fc_remote_port_chkready(rport);
1213         if (rc) {
1214                 cmnd->result = rc;
1215                 done(cmnd);
1216                 return 0;
1217         }
1218
1219         if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1220                 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1221                         cmnd->result = DID_NO_CONNECT << 16;
1222                 else
1223                         cmnd->result = DID_REQUEUE << 16;
1224                 done(cmnd);
1225                 return 0;
1226         }
1227
1228         sg_cnt = scsi_dma_map(cmnd);
1229         if (sg_cnt < 0)
1230                 return SCSI_MLQUEUE_HOST_BUSY;
1231
1232         cmnd->scsi_done = done;
1233
1234         spin_lock_irqsave(&bfad->bfad_lock, flags);
1235         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1236                 printk(KERN_WARNING
1237                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1238                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1239                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1240                 goto out_fail_cmd;
1241         }
1242
1243
1244         itnim = itnim_data->itnim;
1245         if (!itnim) {
1246                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1247                 goto out_fail_cmd;
1248         }
1249
1250         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1251                                     itnim->bfa_itnim, sg_cnt);
1252         if (!hal_io) {
1253                 printk(KERN_WARNING "hal_io failure\n");
1254                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1255                 scsi_dma_unmap(cmnd);
1256                 return SCSI_MLQUEUE_HOST_BUSY;
1257         }
1258
1259         cmnd->host_scribble = (char *)hal_io;
1260         bfa_ioim_start(hal_io);
1261         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1262
1263         return 0;
1264
1265 out_fail_cmd:
1266         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1267         scsi_dma_unmap(cmnd);
1268         if (done)
1269                 done(cmnd);
1270
1271         return 0;
1272 }
1273
1274 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1275
1276 void
1277 bfad_rport_online_wait(struct bfad_s *bfad)
1278 {
1279         int i;
1280         int rport_delay = 10;
1281
1282         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1283                 && i < bfa_linkup_delay; i++) {
1284                 set_current_state(TASK_UNINTERRUPTIBLE);
1285                 schedule_timeout(HZ);
1286         }
1287
1288         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1289                 rport_delay = rport_delay < bfa_linkup_delay ?
1290                         rport_delay : bfa_linkup_delay;
1291                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1292                         && i < rport_delay; i++) {
1293                         set_current_state(TASK_UNINTERRUPTIBLE);
1294                         schedule_timeout(HZ);
1295                 }
1296
1297                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1298                         set_current_state(TASK_UNINTERRUPTIBLE);
1299                         schedule_timeout(rport_delay * HZ);
1300                 }
1301         }
1302 }
1303
1304 int
1305 bfad_get_linkup_delay(struct bfad_s *bfad)
1306 {
1307         u8              nwwns = 0;
1308         wwn_t           wwns[BFA_PREBOOT_BOOTLUN_MAX];
1309         int             linkup_delay;
1310
1311         /*
1312          * Querying for the boot target port wwns
1313          * -- read from boot information in flash.
1314          * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1315          * else => local boot machine set linkup_delay = 0
1316          */
1317
1318         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1319
1320         if (nwwns > 0)
1321                 /* If Boot over SAN set linkup_delay = 30sec */
1322                 linkup_delay = 30;
1323         else
1324                 /* If local boot; no linkup_delay */
1325                 linkup_delay = 0;
1326
1327         return linkup_delay;
1328 }