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         bfa_status_t    rc = BFA_STATUS_OK;
 691
 692         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 693         if (im == NULL) {
 694                 rc = BFA_STATUS_ENOMEM;
 695                 goto ext;
 696         }
 697
 698         bfad->im = im;
 699         im->bfad = bfad;
 700
 701         if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
 702                 kfree(im);
 703                 rc = BFA_STATUS_FAILED;
 704         }
 705
 706         INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
 707 ext:
 708         return rc;
 709 }
 710
 711 void
 712 bfad_im_probe_undo(struct bfad_s *bfad)
 713 {
 714         if (bfad->im) {
 715                 bfad_destroy_workq(bfad->im);
 716                 kfree(bfad->im);
 717                 bfad->im = NULL;
 718         }
 719 }
 720
 721 struct Scsi_Host *
 722 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 723 {
 724         struct scsi_host_template *sht;
 725
 726         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 727                 sht = &bfad_im_scsi_host_template;
 728         else
 729                 sht = &bfad_im_vport_template;
 730
 731         if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
 732                 sht->max_sectors = max_xfer_size << 1;
 733
 734         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 735
 736         return scsi_host_alloc(sht, sizeof(unsigned long));
 737 }
 738
 739 void
 740 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 741 {
 742         if (!(im_port->flags & BFAD_PORT_DELETE))
 743                 flush_workqueue(bfad->im->drv_workq);
 744         bfad_im_scsi_host_free(im_port->bfad, im_port);
 745         bfad_im_port_clean(im_port);
 746         kfree(im_port);
 747 }
 748
 749 void
 750 bfad_destroy_workq(struct bfad_im_s *im)
 751 {
 752         if (im && im->drv_workq) {
 753                 flush_workqueue(im->drv_workq);
 754                 destroy_workqueue(im->drv_workq);
 755                 im->drv_workq = NULL;
 756         }
 757 }
 758
 759 bfa_status_t
 760 bfad_thread_workq(struct bfad_s *bfad)
 761 {
 762         struct bfad_im_s      *im = bfad->im;
 763
 764         bfa_trc(bfad, 0);
 765         snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
 766                  bfad->inst_no);
 767         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 768         if (!im->drv_workq)
 769                 return BFA_STATUS_FAILED;
 770
 771         return BFA_STATUS_OK;
 772 }
 773
 774 /*
 775  * Scsi_Host template entry.
 776  *
 777  * Description:
 778  * OS entry point to adjust the queue_depths on a per-device basis.
 779  * Called once per device during the bus scan.
 780  * Return non-zero if fails.
 781  */
 782 static int
 783 bfad_im_slave_configure(struct scsi_device *sdev)
 784 {
 785         if (sdev->tagged_supported)
 786                 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
 787         else
 788                 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
 789
 790         return 0;
 791 }
 792
 793 struct scsi_host_template bfad_im_scsi_host_template = {
 794         .module = THIS_MODULE,
 795         .name = BFAD_DRIVER_NAME,
 796         .info = bfad_im_info,
 797         .queuecommand = bfad_im_queuecommand,
 798         .eh_abort_handler = bfad_im_abort_handler,
 799         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 800         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 801
 802         .slave_alloc = bfad_im_slave_alloc,
 803         .slave_configure = bfad_im_slave_configure,
 804         .slave_destroy = bfad_im_slave_destroy,
 805
 806         .this_id = -1,
 807         .sg_tablesize = BFAD_IO_MAX_SGE,
 808         .cmd_per_lun = 3,
 809         .use_clustering = ENABLE_CLUSTERING,
 810         .shost_attrs = bfad_im_host_attrs,
 811         .max_sectors = BFAD_MAX_SECTORS,
 812         .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
 813 };
 814
 815 struct scsi_host_template bfad_im_vport_template = {
 816         .module = THIS_MODULE,
 817         .name = BFAD_DRIVER_NAME,
 818         .info = bfad_im_info,
 819         .queuecommand = bfad_im_queuecommand,
 820         .eh_abort_handler = bfad_im_abort_handler,
 821         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 822         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 823
 824         .slave_alloc = bfad_im_slave_alloc,
 825         .slave_configure = bfad_im_slave_configure,
 826         .slave_destroy = bfad_im_slave_destroy,
 827
 828         .this_id = -1,
 829         .sg_tablesize = BFAD_IO_MAX_SGE,
 830         .cmd_per_lun = 3,
 831         .use_clustering = ENABLE_CLUSTERING,
 832         .shost_attrs = bfad_im_vport_attrs,
 833         .max_sectors = BFAD_MAX_SECTORS,
 834 };
 835
 836 bfa_status_t
 837 bfad_im_module_init(void)
 838 {
 839         bfad_im_scsi_transport_template =
 840                 fc_attach_transport(&bfad_im_fc_function_template);
 841         if (!bfad_im_scsi_transport_template)
 842                 return BFA_STATUS_ENOMEM;
 843
 844         bfad_im_scsi_vport_transport_template =
 845                 fc_attach_transport(&bfad_im_vport_fc_function_template);
 846         if (!bfad_im_scsi_vport_transport_template) {
 847                 fc_release_transport(bfad_im_scsi_transport_template);
 848                 return BFA_STATUS_ENOMEM;
 849         }
 850
 851         return BFA_STATUS_OK;
 852 }
 853
 854 void
 855 bfad_im_module_exit(void)
 856 {
 857         if (bfad_im_scsi_transport_template)
 858                 fc_release_transport(bfad_im_scsi_transport_template);
 859
 860         if (bfad_im_scsi_vport_transport_template)
 861                 fc_release_transport(bfad_im_scsi_vport_transport_template);
 862 }
 863
 864 void
 865 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 866 {
 867         struct scsi_device *tmp_sdev;
 868
 869         if (((jiffies - itnim->last_ramp_up_time) >
 870                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 871                 ((jiffies - itnim->last_queue_full_time) >
 872                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 873                 shost_for_each_device(tmp_sdev, sdev->host) {
 874                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 875                                 if (tmp_sdev->id != sdev->id)
 876                                         continue;
 877                                 if (tmp_sdev->ordered_tags)
 878                                         scsi_adjust_queue_depth(tmp_sdev,
 879                                                 MSG_ORDERED_TAG,
 880                                                 tmp_sdev->queue_depth + 1);
 881                                 else
 882                                         scsi_adjust_queue_depth(tmp_sdev,
 883                                                 MSG_SIMPLE_TAG,
 884                                                 tmp_sdev->queue_depth + 1);
 885
 886                                 itnim->last_ramp_up_time = jiffies;
 887                         }
 888                 }
 889         }
 890 }
 891
 892 void
 893 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 894 {
 895         struct scsi_device *tmp_sdev;
 896
 897         itnim->last_queue_full_time = jiffies;
 898
 899         shost_for_each_device(tmp_sdev, sdev->host) {
 900                 if (tmp_sdev->id != sdev->id)
 901                         continue;
 902                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 903         }
 904 }
 905
 906 struct bfad_itnim_s *
 907 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
 908 {
 909         struct bfad_itnim_s   *itnim = NULL;
 910
 911         /* Search the mapped list for this target ID */
 912         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 913                 if (id == itnim->scsi_tgt_id)
 914                         return itnim;
 915         }
 916
 917         return NULL;
 918 }
 919
 920 /*
 921  * Function is invoked from the SCSI Host Template slave_alloc() entry point.
 922  * Has the logic to query the LUN Mask database to check if this LUN needs to
 923  * be made visible to the SCSI mid-layer or not.
 924  *
 925  * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
 926  * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
 927  */
 928 static int
 929 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
 930                                   struct fc_rport *rport)
 931 {
 932         struct bfad_itnim_data_s *itnim_data =
 933                                 (struct bfad_itnim_data_s *) rport->dd_data;
 934         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 935         struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
 936         struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
 937         int i = 0, ret = -ENXIO;
 938
 939         for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
 940                 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
 941                     scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
 942                     lun_list[i].rp_tag == bfa_rport->rport_tag &&
 943                     lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
 944                         ret = BFA_STATUS_OK;
 945                         break;
 946                 }
 947         }
 948         return ret;
 949 }
 950
 951 /*
 952  * Scsi_Host template entry slave_alloc
 953  */
 954 static int
 955 bfad_im_slave_alloc(struct scsi_device *sdev)
 956 {
 957         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 958         struct bfad_itnim_data_s *itnim_data =
 959                                 (struct bfad_itnim_data_s *) rport->dd_data;
 960         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 961
 962         if (!rport || fc_remote_port_chkready(rport))
 963                 return -ENXIO;
 964
 965         if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
 966                 /*
 967                  * We should not mask LUN 0 - since this will translate
 968                  * to no LUN / TARGET for SCSI ml resulting no scan.
 969                  */
 970                 if (sdev->lun == 0) {
 971                         sdev->sdev_bflags |= BLIST_NOREPORTLUN |
 972                                              BLIST_SPARSELUN;
 973                         goto done;
 974                 }
 975
 976                 /*
 977                  * Query LUN Mask configuration - to expose this LUN
 978                  * to the SCSI mid-layer or to mask it.
 979                  */
 980                 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
 981                                                         BFA_STATUS_OK)
 982                         return -ENXIO;
 983         }
 984 done:
 985         sdev->hostdata = rport->dd_data;
 986
 987         return 0;
 988 }
 989
 990 u32
 991 bfad_im_supported_speeds(struct bfa_s *bfa)
 992 {
 993         struct bfa_ioc_attr_s *ioc_attr;
 994         u32 supported_speed = 0;
 995
 996         ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
 997         if (!ioc_attr)
 998                 return 0;
 999
1000         bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1001         if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1002                 supported_speed |=  FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1003                                 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1004         else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1005                 if (ioc_attr->adapter_attr.is_mezz) {
1006                         supported_speed |= FC_PORTSPEED_8GBIT |
1007                                 FC_PORTSPEED_4GBIT |
1008                                 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1009                 } else {
1010                         supported_speed |= FC_PORTSPEED_8GBIT |
1011                                 FC_PORTSPEED_4GBIT |
1012                                 FC_PORTSPEED_2GBIT;
1013                 }
1014         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1015                 supported_speed |=  FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1016                                 FC_PORTSPEED_1GBIT;
1017         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1018                 supported_speed |= FC_PORTSPEED_10GBIT;
1019         }
1020         kfree(ioc_attr);
1021         return supported_speed;
1022 }
1023
1024 void
1025 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1026 {
1027         struct Scsi_Host *host = im_port->shost;
1028         struct bfad_s         *bfad = im_port->bfad;
1029         struct bfad_port_s    *port = im_port->port;
1030         char symname[BFA_SYMNAME_MAXLEN];
1031         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1032
1033         fc_host_node_name(host) =
1034                 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1035         fc_host_port_name(host) =
1036                 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1037         fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1038
1039         fc_host_supported_classes(host) = FC_COS_CLASS3;
1040
1041         memset(fc_host_supported_fc4s(host), 0,
1042                sizeof(fc_host_supported_fc4s(host)));
1043         if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1044                 /* For FCP type 0x08 */
1045                 fc_host_supported_fc4s(host)[2] = 1;
1046         /* For fibre channel services type 0x20 */
1047         fc_host_supported_fc4s(host)[7] = 1;
1048
1049         strncpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1050                 BFA_SYMNAME_MAXLEN);
1051         sprintf(fc_host_symbolic_name(host), "%s", symname);
1052
1053         fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1054         fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1055 }
1056
1057 static void
1058 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1059 {
1060         struct fc_rport_identifiers rport_ids;
1061         struct fc_rport *fc_rport;
1062         struct bfad_itnim_data_s *itnim_data;
1063
1064         rport_ids.node_name =
1065                 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1066         rport_ids.port_name =
1067                 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1068         rport_ids.port_id =
1069                 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1070         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1071
1072         itnim->fc_rport = fc_rport =
1073                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1074
1075         if (!fc_rport)
1076                 return;
1077
1078         fc_rport->maxframe_size =
1079                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1080         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1081
1082         itnim_data = fc_rport->dd_data;
1083         itnim_data->itnim = itnim;
1084
1085         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1086
1087         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1088                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1089
1090         if ((fc_rport->scsi_target_id != -1)
1091             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1092                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1093
1094         itnim->channel = fc_rport->channel;
1095
1096         return;
1097 }
1098
1099 /*
1100  * Work queue handler using FC transport service
1101 * Context: kernel
1102  */
1103 static void
1104 bfad_im_itnim_work_handler(struct work_struct *work)
1105 {
1106         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1107                                                         itnim_work);
1108         struct bfad_im_s      *im = itnim->im;
1109         struct bfad_s         *bfad = im->bfad;
1110         struct bfad_im_port_s *im_port;
1111         unsigned long   flags;
1112         struct fc_rport *fc_rport;
1113         wwn_t wwpn;
1114         u32 fcid;
1115         char wwpn_str[32], fcid_str[16];
1116
1117         spin_lock_irqsave(&bfad->bfad_lock, flags);
1118         im_port = itnim->im_port;
1119         bfa_trc(bfad, itnim->state);
1120         switch (itnim->state) {
1121         case ITNIM_STATE_ONLINE:
1122                 if (!itnim->fc_rport) {
1123                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1124                         bfad_im_fc_rport_add(im_port, itnim);
1125                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1126                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1127                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1128                         wwn2str(wwpn_str, wwpn);
1129                         fcid2str(fcid_str, fcid);
1130                         list_add_tail(&itnim->list_entry,
1131                                 &im_port->itnim_mapped_list);
1132                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1133                                 "ITNIM ONLINE Target: %d:0:%d "
1134                                 "FCID: %s WWPN: %s\n",
1135                                 im_port->shost->host_no,
1136                                 itnim->scsi_tgt_id,
1137                                 fcid_str, wwpn_str);
1138                 } else {
1139                         printk(KERN_WARNING
1140                                 "%s: itnim %llx is already in online state\n",
1141                                 __func__,
1142                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1143                 }
1144
1145                 break;
1146         case ITNIM_STATE_OFFLINE_PENDING:
1147                 itnim->state = ITNIM_STATE_OFFLINE;
1148                 if (itnim->fc_rport) {
1149                         fc_rport = itnim->fc_rport;
1150                         ((struct bfad_itnim_data_s *)
1151                                 fc_rport->dd_data)->itnim = NULL;
1152                         itnim->fc_rport = NULL;
1153                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1154                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1155                                 fc_rport->dev_loss_tmo =
1156                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1157                                 fc_remote_port_delete(fc_rport);
1158                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1159                         }
1160                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1161                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1162                         wwn2str(wwpn_str, wwpn);
1163                         fcid2str(fcid_str, fcid);
1164                         list_del(&itnim->list_entry);
1165                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1166                                 "ITNIM OFFLINE Target: %d:0:%d "
1167                                 "FCID: %s WWPN: %s\n",
1168                                 im_port->shost->host_no,
1169                                 itnim->scsi_tgt_id,
1170                                 fcid_str, wwpn_str);
1171                 }
1172                 break;
1173         case ITNIM_STATE_FREE:
1174                 if (itnim->fc_rport) {
1175                         fc_rport = itnim->fc_rport;
1176                         ((struct bfad_itnim_data_s *)
1177                                 fc_rport->dd_data)->itnim = NULL;
1178                         itnim->fc_rport = NULL;
1179                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1180                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1181                                 fc_rport->dev_loss_tmo =
1182                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1183                                 fc_remote_port_delete(fc_rport);
1184                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1185                         }
1186                         list_del(&itnim->list_entry);
1187                 }
1188
1189                 kfree(itnim);
1190                 break;
1191         default:
1192                 WARN_ON(1);
1193                 break;
1194         }
1195
1196         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1197 }
1198
1199 /*
1200  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1201  */
1202 static int
1203 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1204 {
1205         struct bfad_im_port_s *im_port =
1206                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1207         struct bfad_s         *bfad = im_port->bfad;
1208         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1209         struct bfad_itnim_s   *itnim;
1210         struct bfa_ioim_s *hal_io;
1211         unsigned long   flags;
1212         int             rc;
1213         int       sg_cnt = 0;
1214         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1215
1216         rc = fc_remote_port_chkready(rport);
1217         if (rc) {
1218                 cmnd->result = rc;
1219                 done(cmnd);
1220                 return 0;
1221         }
1222
1223         sg_cnt = scsi_dma_map(cmnd);
1224         if (sg_cnt < 0)
1225                 return SCSI_MLQUEUE_HOST_BUSY;
1226
1227         cmnd->scsi_done = done;
1228
1229         spin_lock_irqsave(&bfad->bfad_lock, flags);
1230         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1231                 printk(KERN_WARNING
1232                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1233                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1234                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1235                 goto out_fail_cmd;
1236         }
1237
1238
1239         itnim = itnim_data->itnim;
1240         if (!itnim) {
1241                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1242                 goto out_fail_cmd;
1243         }
1244
1245         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1246                                     itnim->bfa_itnim, sg_cnt);
1247         if (!hal_io) {
1248                 printk(KERN_WARNING "hal_io failure\n");
1249                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1250                 scsi_dma_unmap(cmnd);
1251                 return SCSI_MLQUEUE_HOST_BUSY;
1252         }
1253
1254         cmnd->host_scribble = (char *)hal_io;
1255         bfa_ioim_start(hal_io);
1256         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1257
1258         return 0;
1259
1260 out_fail_cmd:
1261         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1262         scsi_dma_unmap(cmnd);
1263         if (done)
1264                 done(cmnd);
1265
1266         return 0;
1267 }
1268
1269 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1270
1271 void
1272 bfad_rport_online_wait(struct bfad_s *bfad)
1273 {
1274         int i;
1275         int rport_delay = 10;
1276
1277         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1278                 && i < bfa_linkup_delay; i++) {
1279                 set_current_state(TASK_UNINTERRUPTIBLE);
1280                 schedule_timeout(HZ);
1281         }
1282
1283         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1284                 rport_delay = rport_delay < bfa_linkup_delay ?
1285                         rport_delay : bfa_linkup_delay;
1286                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1287                         && i < rport_delay; i++) {
1288                         set_current_state(TASK_UNINTERRUPTIBLE);
1289                         schedule_timeout(HZ);
1290                 }
1291
1292                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1293                         set_current_state(TASK_UNINTERRUPTIBLE);
1294                         schedule_timeout(rport_delay * HZ);
1295                 }
1296         }
1297 }
1298
1299 int
1300 bfad_get_linkup_delay(struct bfad_s *bfad)
1301 {
1302         u8              nwwns = 0;
1303         wwn_t           wwns[BFA_PREBOOT_BOOTLUN_MAX];
1304         int             linkup_delay;
1305
1306         /*
1307          * Querying for the boot target port wwns
1308          * -- read from boot information in flash.
1309          * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1310          * else => local boot machine set linkup_delay = 0
1311          */
1312
1313         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1314
1315         if (nwwns > 0)
1316                 /* If Boot over SAN set linkup_delay = 30sec */
1317                 linkup_delay = 30;
1318         else
1319                 /* If local boot; no linkup_delay */
1320                 linkup_delay = 0;
1321
1322         return linkup_delay;
1323 }