drivers/scsi/bfa/bfad_im.c

   1 /*
   2  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
   3  * Copyright (c) 2014- QLogic Corporation.
   4  * All rights reserved
   5  * www.qlogic.com
   6  *
   7  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License (GPL) Version 2 as
  11  * published by the Free Software Foundation
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  */
  18
  19 /*
  20  *  bfad_im.c Linux driver IM module.
  21  */
  22
  23 #include <linux/export.h>
  24
  25 #include "bfad_drv.h"
  26 #include "bfad_im.h"
  27 #include "bfa_fcs.h"
  28
  29 BFA_TRC_FILE(LDRV, IM);
  30
  31 DEFINE_IDR(bfad_im_port_index);
  32 struct scsi_transport_template *bfad_im_scsi_transport_template;
  33 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
  34 static void bfad_im_itnim_work_handler(struct work_struct *work);
  35 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
  36 static int bfad_im_slave_alloc(struct scsi_device *sdev);
  37 static void bfad_im_fc_rport_add(struct bfad_im_port_s  *im_port,
  38                                 struct bfad_itnim_s *itnim);
  39
  40 void
  41 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
  42                         enum bfi_ioim_status io_status, u8 scsi_status,
  43                         int sns_len, u8 *sns_info, s32 residue)
  44 {
  45         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
  46         struct bfad_s         *bfad = drv;
  47         struct bfad_itnim_data_s *itnim_data;
  48         struct bfad_itnim_s *itnim;
  49         u8         host_status = DID_OK;
  50
  51         switch (io_status) {
  52         case BFI_IOIM_STS_OK:
  53                 bfa_trc(bfad, scsi_status);
  54                 scsi_set_resid(cmnd, 0);
  55
  56                 if (sns_len > 0) {
  57                         bfa_trc(bfad, sns_len);
  58                         if (sns_len > SCSI_SENSE_BUFFERSIZE)
  59                                 sns_len = SCSI_SENSE_BUFFERSIZE;
  60                         memcpy(cmnd->sense_buffer, sns_info, sns_len);
  61                 }
  62
  63                 if (residue > 0) {
  64                         bfa_trc(bfad, residue);
  65                         scsi_set_resid(cmnd, residue);
  66                         if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
  67                                 (scsi_bufflen(cmnd) - residue) <
  68                                         cmnd->underflow) {
  69                                 bfa_trc(bfad, 0);
  70                                 host_status = DID_ERROR;
  71                         }
  72                 }
  73                 cmnd->result = ScsiResult(host_status, scsi_status);
  74
  75                 break;
  76
  77         case BFI_IOIM_STS_TIMEDOUT:
  78                 host_status = DID_TIME_OUT;
  79                 cmnd->result = ScsiResult(host_status, 0);
  80                 break;
  81         case BFI_IOIM_STS_PATHTOV:
  82                 host_status = DID_TRANSPORT_DISRUPTED;
  83                 cmnd->result = ScsiResult(host_status, 0);
  84                 break;
  85         default:
  86                 host_status = DID_ERROR;
  87                 cmnd->result = ScsiResult(host_status, 0);
  88         }
  89
  90         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
  91         if (cmnd->device->host != NULL)
  92                 scsi_dma_unmap(cmnd);
  93
  94         cmnd->host_scribble = NULL;
  95         bfa_trc(bfad, cmnd->result);
  96
  97         itnim_data = cmnd->device->hostdata;
  98         if (itnim_data) {
  99                 itnim = itnim_data->itnim;
 100                 if (!cmnd->result && itnim &&
 101                          (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
 102                         /* Queue depth adjustment for good status completion */
 103                         bfad_ramp_up_qdepth(itnim, cmnd->device);
 104                 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
 105                         /* qfull handling */
 106                         bfad_handle_qfull(itnim, cmnd->device);
 107                 }
 108         }
 109
 110         cmnd->scsi_done(cmnd);
 111 }
 112
 113 void
 114 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
 115 {
 116         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 117         struct bfad_itnim_data_s *itnim_data;
 118         struct bfad_itnim_s *itnim;
 119
 120         cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
 121
 122         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 123         if (cmnd->device->host != NULL)
 124                 scsi_dma_unmap(cmnd);
 125
 126         cmnd->host_scribble = NULL;
 127
 128         /* Queue depth adjustment */
 129         if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
 130                 itnim_data = cmnd->device->hostdata;
 131                 if (itnim_data) {
 132                         itnim = itnim_data->itnim;
 133                         if (itnim)
 134                                 bfad_ramp_up_qdepth(itnim, cmnd->device);
 135                 }
 136         }
 137
 138         cmnd->scsi_done(cmnd);
 139 }
 140
 141 void
 142 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
 143 {
 144         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 145         struct bfad_s         *bfad = drv;
 146
 147         cmnd->result = ScsiResult(DID_ERROR, 0);
 148
 149         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 150         if (cmnd->device->host != NULL)
 151                 scsi_dma_unmap(cmnd);
 152
 153         bfa_trc(bfad, cmnd->result);
 154         cmnd->host_scribble = NULL;
 155 }
 156
 157 void
 158 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
 159                    enum bfi_tskim_status tsk_status)
 160 {
 161         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
 162         wait_queue_head_t *wq;
 163
 164         cmnd->SCp.Status |= tsk_status << 1;
 165         set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
 166         wq = (wait_queue_head_t *) cmnd->SCp.ptr;
 167         cmnd->SCp.ptr = NULL;
 168
 169         if (wq)
 170                 wake_up(wq);
 171 }
 172
 173 /*
 174  *  Scsi_Host_template SCSI host template
 175  */
 176 /*
 177  * Scsi_Host template entry, returns BFAD PCI info.
 178  */
 179 static const char *
 180 bfad_im_info(struct Scsi_Host *shost)
 181 {
 182         static char     bfa_buf[256];
 183         struct bfad_im_port_s *im_port =
 184                         (struct bfad_im_port_s *) shost->hostdata[0];
 185         struct bfad_s *bfad = im_port->bfad;
 186
 187         memset(bfa_buf, 0, sizeof(bfa_buf));
 188         snprintf(bfa_buf, sizeof(bfa_buf),
 189                 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
 190                 bfad->pci_name, BFAD_DRIVER_VERSION);
 191
 192         return bfa_buf;
 193 }
 194
 195 /*
 196  * Scsi_Host template entry, aborts the specified SCSI command.
 197  *
 198  * Returns: SUCCESS or FAILED.
 199  */
 200 static int
 201 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
 202 {
 203         struct Scsi_Host *shost = cmnd->device->host;
 204         struct bfad_im_port_s *im_port =
 205                         (struct bfad_im_port_s *) shost->hostdata[0];
 206         struct bfad_s         *bfad = im_port->bfad;
 207         struct bfa_ioim_s *hal_io;
 208         unsigned long   flags;
 209         u32        timeout;
 210         int             rc = FAILED;
 211
 212         spin_lock_irqsave(&bfad->bfad_lock, flags);
 213         hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 214         if (!hal_io) {
 215                 /* IO has been completed, return success */
 216                 rc = SUCCESS;
 217                 goto out;
 218         }
 219         if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
 220                 rc = FAILED;
 221                 goto out;
 222         }
 223
 224         bfa_trc(bfad, hal_io->iotag);
 225         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 226                 "scsi%d: abort cmnd %p iotag %x\n",
 227                 im_port->shost->host_no, cmnd, hal_io->iotag);
 228         (void) bfa_ioim_abort(hal_io);
 229         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 230
 231         /* Need to wait until the command get aborted */
 232         timeout = 10;
 233         while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
 234                 set_current_state(TASK_UNINTERRUPTIBLE);
 235                 schedule_timeout(timeout);
 236                 if (timeout < 4 * HZ)
 237                         timeout *= 2;
 238         }
 239
 240         cmnd->scsi_done(cmnd);
 241         bfa_trc(bfad, hal_io->iotag);
 242         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 243                 "scsi%d: complete abort 0x%p iotag 0x%x\n",
 244                 im_port->shost->host_no, cmnd, hal_io->iotag);
 245         return SUCCESS;
 246 out:
 247         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 248         return rc;
 249 }
 250
 251 static bfa_status_t
 252 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
 253                      struct bfad_itnim_s *itnim)
 254 {
 255         struct bfa_tskim_s *tskim;
 256         struct bfa_itnim_s *bfa_itnim;
 257         bfa_status_t    rc = BFA_STATUS_OK;
 258         struct scsi_lun scsilun;
 259
 260         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 261         if (!tskim) {
 262                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 263                         "target reset, fail to allocate tskim\n");
 264                 rc = BFA_STATUS_FAILED;
 265                 goto out;
 266         }
 267
 268         /*
 269          * Set host_scribble to NULL to avoid aborting a task command if
 270          * happens.
 271          */
 272         cmnd->host_scribble = NULL;
 273         cmnd->SCp.Status = 0;
 274         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 275         /*
 276          * bfa_itnim can be NULL if the port gets disconnected and the bfa
 277          * and fcs layers have cleaned up their nexus with the targets and
 278          * the same has not been cleaned up by the shim
 279          */
 280         if (bfa_itnim == NULL) {
 281                 bfa_tskim_free(tskim);
 282                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 283                         "target reset, bfa_itnim is NULL\n");
 284                 rc = BFA_STATUS_FAILED;
 285                 goto out;
 286         }
 287
 288         memset(&scsilun, 0, sizeof(scsilun));
 289         bfa_tskim_start(tskim, bfa_itnim, scsilun,
 290                             FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
 291 out:
 292         return rc;
 293 }
 294
 295 /*
 296  * Scsi_Host template entry, resets a LUN and abort its all commands.
 297  *
 298  * Returns: SUCCESS or FAILED.
 299  *
 300  */
 301 static int
 302 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
 303 {
 304         struct Scsi_Host *shost = cmnd->device->host;
 305         struct bfad_im_port_s *im_port =
 306                         (struct bfad_im_port_s *) shost->hostdata[0];
 307         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
 308         struct bfad_s         *bfad = im_port->bfad;
 309         struct bfa_tskim_s *tskim;
 310         struct bfad_itnim_s   *itnim;
 311         struct bfa_itnim_s *bfa_itnim;
 312         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 313         int             rc = SUCCESS;
 314         unsigned long   flags;
 315         enum bfi_tskim_status task_status;
 316         struct scsi_lun scsilun;
 317
 318         spin_lock_irqsave(&bfad->bfad_lock, flags);
 319         itnim = itnim_data->itnim;
 320         if (!itnim) {
 321                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 322                 rc = FAILED;
 323                 goto out;
 324         }
 325
 326         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 327         if (!tskim) {
 328                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 329                                 "LUN reset, fail to allocate tskim");
 330                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 331                 rc = FAILED;
 332                 goto out;
 333         }
 334
 335         /*
 336          * Set host_scribble to NULL to avoid aborting a task command
 337          * if happens.
 338          */
 339         cmnd->host_scribble = NULL;
 340         cmnd->SCp.ptr = (char *)&wq;
 341         cmnd->SCp.Status = 0;
 342         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 343         /*
 344          * bfa_itnim can be NULL if the port gets disconnected and the bfa
 345          * and fcs layers have cleaned up their nexus with the targets and
 346          * the same has not been cleaned up by the shim
 347          */
 348         if (bfa_itnim == NULL) {
 349                 bfa_tskim_free(tskim);
 350                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 351                         "lun reset, bfa_itnim is NULL\n");
 352                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 353                 rc = FAILED;
 354                 goto out;
 355         }
 356         int_to_scsilun(cmnd->device->lun, &scsilun);
 357         bfa_tskim_start(tskim, bfa_itnim, scsilun,
 358                             FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
 359         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 360
 361         wait_event(wq, test_bit(IO_DONE_BIT,
 362                         (unsigned long *)&cmnd->SCp.Status));
 363
 364         task_status = cmnd->SCp.Status >> 1;
 365         if (task_status != BFI_TSKIM_STS_OK) {
 366                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 367                         "LUN reset failure, status: %d\n", task_status);
 368                 rc = FAILED;
 369         }
 370
 371 out:
 372         return rc;
 373 }
 374
 375 /*
 376  * Scsi_Host template entry, resets the bus and abort all commands.
 377  */
 378 static int
 379 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
 380 {
 381         struct Scsi_Host *shost = cmnd->device->host;
 382         struct bfad_im_port_s *im_port =
 383                                 (struct bfad_im_port_s *) shost->hostdata[0];
 384         struct bfad_s         *bfad = im_port->bfad;
 385         struct bfad_itnim_s   *itnim;
 386         unsigned long   flags;
 387         u32        i, rc, err_cnt = 0;
 388         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 389         enum bfi_tskim_status task_status;
 390
 391         spin_lock_irqsave(&bfad->bfad_lock, flags);
 392         for (i = 0; i < MAX_FCP_TARGET; i++) {
 393                 itnim = bfad_get_itnim(im_port, i);
 394                 if (itnim) {
 395                         cmnd->SCp.ptr = (char *)&wq;
 396                         rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
 397                         if (rc != BFA_STATUS_OK) {
 398                                 err_cnt++;
 399                                 continue;
 400                         }
 401
 402                         /* wait target reset to complete */
 403                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 404                         wait_event(wq, test_bit(IO_DONE_BIT,
 405                                         (unsigned long *)&cmnd->SCp.Status));
 406                         spin_lock_irqsave(&bfad->bfad_lock, flags);
 407
 408                         task_status = cmnd->SCp.Status >> 1;
 409                         if (task_status != BFI_TSKIM_STS_OK) {
 410                                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 411                                         "target reset failure,"
 412                                         " status: %d\n", task_status);
 413                                 err_cnt++;
 414                         }
 415                 }
 416         }
 417         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 418
 419         if (err_cnt)
 420                 return FAILED;
 421
 422         return SUCCESS;
 423 }
 424
 425 /*
 426  * Scsi_Host template entry slave_destroy.
 427  */
 428 static void
 429 bfad_im_slave_destroy(struct scsi_device *sdev)
 430 {
 431         sdev->hostdata = NULL;
 432         return;
 433 }
 434
 435 /*
 436  *  BFA FCS itnim callbacks
 437  */
 438
 439 /*
 440  * BFA FCS itnim alloc callback, after successful PRLI
 441  * Context: Interrupt
 442  */
 443 void
 444 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
 445                     struct bfad_itnim_s **itnim_drv)
 446 {
 447         *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
 448         if (*itnim_drv == NULL)
 449                 return;
 450
 451         (*itnim_drv)->im = bfad->im;
 452         *itnim = &(*itnim_drv)->fcs_itnim;
 453         (*itnim_drv)->state = ITNIM_STATE_NONE;
 454
 455         /*
 456          * Initiaze the itnim_work
 457          */
 458         INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
 459         bfad->bfad_flags |= BFAD_RPORT_ONLINE;
 460 }
 461
 462 /*
 463  * BFA FCS itnim free callback.
 464  * Context: Interrupt. bfad_lock is held
 465  */
 466 void
 467 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
 468 {
 469         struct bfad_port_s    *port;
 470         wwn_t wwpn;
 471         u32 fcid;
 472         char wwpn_str[32], fcid_str[16];
 473         struct bfad_im_s        *im = itnim_drv->im;
 474
 475         /* online to free state transtion should not happen */
 476         WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
 477
 478         itnim_drv->queue_work = 1;
 479         /* offline request is not yet done, use the same request to free */
 480         if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
 481                 itnim_drv->queue_work = 0;
 482
 483         itnim_drv->state = ITNIM_STATE_FREE;
 484         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 485         itnim_drv->im_port = port->im_port;
 486         wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
 487         fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
 488         wwn2str(wwpn_str, wwpn);
 489         fcid2str(fcid_str, fcid);
 490         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 491                 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
 492                 port->im_port->shost->host_no,
 493                 fcid_str, wwpn_str);
 494
 495         /* ITNIM processing */
 496         if (itnim_drv->queue_work)
 497                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 498 }
 499
 500 /*
 501  * BFA FCS itnim online callback.
 502  * Context: Interrupt. bfad_lock is held
 503  */
 504 void
 505 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
 506 {
 507         struct bfad_port_s    *port;
 508         struct bfad_im_s        *im = itnim_drv->im;
 509
 510         itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
 511         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 512         itnim_drv->state = ITNIM_STATE_ONLINE;
 513         itnim_drv->queue_work = 1;
 514         itnim_drv->im_port = port->im_port;
 515
 516         /* ITNIM processing */
 517         if (itnim_drv->queue_work)
 518                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 519 }
 520
 521 /*
 522  * BFA FCS itnim offline callback.
 523  * Context: Interrupt. bfad_lock is held
 524  */
 525 void
 526 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
 527 {
 528         struct bfad_port_s    *port;
 529         struct bfad_s *bfad;
 530         struct bfad_im_s        *im = itnim_drv->im;
 531
 532         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 533         bfad = port->bfad;
 534         if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
 535                  (port->flags & BFAD_PORT_DELETE)) {
 536                 itnim_drv->state = ITNIM_STATE_OFFLINE;
 537                 return;
 538         }
 539         itnim_drv->im_port = port->im_port;
 540         itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
 541         itnim_drv->queue_work = 1;
 542
 543         /* ITNIM processing */
 544         if (itnim_drv->queue_work)
 545                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 546 }
 547
 548 /*
 549  * Allocate a Scsi_Host for a port.
 550  */
 551 int
 552 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
 553                         struct device *dev)
 554 {
 555         int error = 1;
 556
 557         mutex_lock(&bfad_mutex);
 558         error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
 559         if (error < 0) {
 560                 mutex_unlock(&bfad_mutex);
 561                 printk(KERN_WARNING "idr_alloc failure\n");
 562                 goto out;
 563         }
 564         im_port->idr_id = error;
 565         mutex_unlock(&bfad_mutex);
 566
 567         im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
 568         if (!im_port->shost) {
 569                 error = 1;
 570                 goto out_free_idr;
 571         }
 572
 573         im_port->shost->hostdata[0] = (unsigned long)im_port;
 574         im_port->shost->unique_id = im_port->idr_id;
 575         im_port->shost->this_id = -1;
 576         im_port->shost->max_id = MAX_FCP_TARGET;
 577         im_port->shost->max_lun = MAX_FCP_LUN;
 578         im_port->shost->max_cmd_len = 16;
 579         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 580         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 581                 im_port->shost->transportt = bfad_im_scsi_transport_template;
 582         else
 583                 im_port->shost->transportt =
 584                                 bfad_im_scsi_vport_transport_template;
 585
 586         error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
 587         if (error) {
 588                 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
 589                 goto out_fc_rel;
 590         }
 591
 592         return 0;
 593
 594 out_fc_rel:
 595         scsi_host_put(im_port->shost);
 596         im_port->shost = NULL;
 597 out_free_idr:
 598         mutex_lock(&bfad_mutex);
 599         idr_remove(&bfad_im_port_index, im_port->idr_id);
 600         mutex_unlock(&bfad_mutex);
 601 out:
 602         return error;
 603 }
 604
 605 void
 606 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 607 {
 608         bfa_trc(bfad, bfad->inst_no);
 609         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
 610                         im_port->shost->host_no);
 611
 612         fc_remove_host(im_port->shost);
 613
 614         scsi_remove_host(im_port->shost);
 615         scsi_host_put(im_port->shost);
 616
 617         mutex_lock(&bfad_mutex);
 618         idr_remove(&bfad_im_port_index, im_port->idr_id);
 619         mutex_unlock(&bfad_mutex);
 620 }
 621
 622 static void
 623 bfad_im_port_delete_handler(struct work_struct *work)
 624 {
 625         struct bfad_im_port_s *im_port =
 626                 container_of(work, struct bfad_im_port_s, port_delete_work);
 627
 628         if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
 629                 im_port->flags |= BFAD_PORT_DELETE;
 630                 fc_vport_terminate(im_port->fc_vport);
 631         }
 632 }
 633
 634 bfa_status_t
 635 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 636 {
 637         int             rc = BFA_STATUS_OK;
 638         struct bfad_im_port_s *im_port;
 639
 640         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 641         if (im_port == NULL) {
 642                 rc = BFA_STATUS_ENOMEM;
 643                 goto ext;
 644         }
 645         port->im_port = im_port;
 646         im_port->port = port;
 647         im_port->bfad = bfad;
 648
 649         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 650         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 651         INIT_LIST_HEAD(&im_port->binding_list);
 652
 653 ext:
 654         return rc;
 655 }
 656
 657 void
 658 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 659 {
 660         struct bfad_im_port_s *im_port = port->im_port;
 661
 662         queue_work(bfad->im->drv_workq,
 663                                 &im_port->port_delete_work);
 664 }
 665
 666 void
 667 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 668 {
 669         struct bfad_fcp_binding *bp, *bp_new;
 670         unsigned long flags;
 671         struct bfad_s *bfad =  im_port->bfad;
 672
 673         spin_lock_irqsave(&bfad->bfad_lock, flags);
 674         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 675                                         list_entry) {
 676                 list_del(&bp->list_entry);
 677                 kfree(bp);
 678         }
 679
 680         /* the itnim_mapped_list must be empty at this time */
 681         WARN_ON(!list_empty(&im_port->itnim_mapped_list));
 682
 683         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 684 }
 685
 686 static void bfad_aen_im_notify_handler(struct work_struct *work)
 687 {
 688         struct bfad_im_s *im =
 689                 container_of(work, struct bfad_im_s, aen_im_notify_work);
 690         struct bfa_aen_entry_s *aen_entry;
 691         struct bfad_s *bfad = im->bfad;
 692         struct Scsi_Host *shost = bfad->pport.im_port->shost;
 693         void *event_data;
 694         unsigned long flags;
 695
 696         while (!list_empty(&bfad->active_aen_q)) {
 697                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 698                 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
 699                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 700                 event_data = (char *)aen_entry + sizeof(struct list_head);
 701                 fc_host_post_vendor_event(shost, fc_get_event_number(),
 702                                 sizeof(struct bfa_aen_entry_s) -
 703                                 sizeof(struct list_head),
 704                                 (char *)event_data, BFAD_NL_VENDOR_ID);
 705                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 706                 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
 707                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 708         }
 709 }
 710
 711 bfa_status_t
 712 bfad_im_probe(struct bfad_s *bfad)
 713 {
 714         struct bfad_im_s      *im;
 715
 716         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 717         if (im == NULL)
 718                 return BFA_STATUS_ENOMEM;
 719
 720         bfad->im = im;
 721         im->bfad = bfad;
 722
 723         if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
 724                 kfree(im);
 725                 return BFA_STATUS_FAILED;
 726         }
 727
 728         INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
 729         return BFA_STATUS_OK;
 730 }
 731
 732 void
 733 bfad_im_probe_undo(struct bfad_s *bfad)
 734 {
 735         if (bfad->im) {
 736                 bfad_destroy_workq(bfad->im);
 737                 kfree(bfad->im);
 738                 bfad->im = NULL;
 739         }
 740 }
 741
 742 struct Scsi_Host *
 743 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 744 {
 745         struct scsi_host_template *sht;
 746
 747         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 748                 sht = &bfad_im_scsi_host_template;
 749         else
 750                 sht = &bfad_im_vport_template;
 751
 752         if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
 753                 sht->max_sectors = max_xfer_size << 1;
 754
 755         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 756
 757         return scsi_host_alloc(sht, sizeof(unsigned long));
 758 }
 759
 760 void
 761 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 762 {
 763         if (!(im_port->flags & BFAD_PORT_DELETE))
 764                 flush_workqueue(bfad->im->drv_workq);
 765         bfad_im_scsi_host_free(im_port->bfad, im_port);
 766         bfad_im_port_clean(im_port);
 767         kfree(im_port);
 768 }
 769
 770 void
 771 bfad_destroy_workq(struct bfad_im_s *im)
 772 {
 773         if (im && im->drv_workq) {
 774                 flush_workqueue(im->drv_workq);
 775                 destroy_workqueue(im->drv_workq);
 776                 im->drv_workq = NULL;
 777         }
 778 }
 779
 780 bfa_status_t
 781 bfad_thread_workq(struct bfad_s *bfad)
 782 {
 783         struct bfad_im_s      *im = bfad->im;
 784
 785         bfa_trc(bfad, 0);
 786         snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
 787                  bfad->inst_no);
 788         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 789         if (!im->drv_workq)
 790                 return BFA_STATUS_FAILED;
 791
 792         return BFA_STATUS_OK;
 793 }
 794
 795 /*
 796  * Scsi_Host template entry.
 797  *
 798  * Description:
 799  * OS entry point to adjust the queue_depths on a per-device basis.
 800  * Called once per device during the bus scan.
 801  * Return non-zero if fails.
 802  */
 803 static int
 804 bfad_im_slave_configure(struct scsi_device *sdev)
 805 {
 806         scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
 807         return 0;
 808 }
 809
 810 struct scsi_host_template bfad_im_scsi_host_template = {
 811         .module = THIS_MODULE,
 812         .name = BFAD_DRIVER_NAME,
 813         .info = bfad_im_info,
 814         .queuecommand = bfad_im_queuecommand,
 815         .eh_abort_handler = bfad_im_abort_handler,
 816         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 817         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 818
 819         .slave_alloc = bfad_im_slave_alloc,
 820         .slave_configure = bfad_im_slave_configure,
 821         .slave_destroy = bfad_im_slave_destroy,
 822
 823         .this_id = -1,
 824         .sg_tablesize = BFAD_IO_MAX_SGE,
 825         .cmd_per_lun = 3,
 826         .use_clustering = ENABLE_CLUSTERING,
 827         .shost_attrs = bfad_im_host_attrs,
 828         .max_sectors = BFAD_MAX_SECTORS,
 829         .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
 830 };
 831
 832 struct scsi_host_template bfad_im_vport_template = {
 833         .module = THIS_MODULE,
 834         .name = BFAD_DRIVER_NAME,
 835         .info = bfad_im_info,
 836         .queuecommand = bfad_im_queuecommand,
 837         .eh_abort_handler = bfad_im_abort_handler,
 838         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 839         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 840
 841         .slave_alloc = bfad_im_slave_alloc,
 842         .slave_configure = bfad_im_slave_configure,
 843         .slave_destroy = bfad_im_slave_destroy,
 844
 845         .this_id = -1,
 846         .sg_tablesize = BFAD_IO_MAX_SGE,
 847         .cmd_per_lun = 3,
 848         .use_clustering = ENABLE_CLUSTERING,
 849         .shost_attrs = bfad_im_vport_attrs,
 850         .max_sectors = BFAD_MAX_SECTORS,
 851 };
 852
 853 bfa_status_t
 854 bfad_im_module_init(void)
 855 {
 856         bfad_im_scsi_transport_template =
 857                 fc_attach_transport(&bfad_im_fc_function_template);
 858         if (!bfad_im_scsi_transport_template)
 859                 return BFA_STATUS_ENOMEM;
 860
 861         bfad_im_scsi_vport_transport_template =
 862                 fc_attach_transport(&bfad_im_vport_fc_function_template);
 863         if (!bfad_im_scsi_vport_transport_template) {
 864                 fc_release_transport(bfad_im_scsi_transport_template);
 865                 return BFA_STATUS_ENOMEM;
 866         }
 867
 868         return BFA_STATUS_OK;
 869 }
 870
 871 void
 872 bfad_im_module_exit(void)
 873 {
 874         if (bfad_im_scsi_transport_template)
 875                 fc_release_transport(bfad_im_scsi_transport_template);
 876
 877         if (bfad_im_scsi_vport_transport_template)
 878                 fc_release_transport(bfad_im_scsi_vport_transport_template);
 879
 880         idr_destroy(&bfad_im_port_index);
 881 }
 882
 883 void
 884 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 885 {
 886         struct scsi_device *tmp_sdev;
 887
 888         if (((jiffies - itnim->last_ramp_up_time) >
 889                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 890                 ((jiffies - itnim->last_queue_full_time) >
 891                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 892                 shost_for_each_device(tmp_sdev, sdev->host) {
 893                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 894                                 if (tmp_sdev->id != sdev->id)
 895                                         continue;
 896                                 scsi_change_queue_depth(tmp_sdev,
 897                                         tmp_sdev->queue_depth + 1);
 898
 899                                 itnim->last_ramp_up_time = jiffies;
 900                         }
 901                 }
 902         }
 903 }
 904
 905 void
 906 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 907 {
 908         struct scsi_device *tmp_sdev;
 909
 910         itnim->last_queue_full_time = jiffies;
 911
 912         shost_for_each_device(tmp_sdev, sdev->host) {
 913                 if (tmp_sdev->id != sdev->id)
 914                         continue;
 915                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 916         }
 917 }
 918
 919 struct bfad_itnim_s *
 920 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
 921 {
 922         struct bfad_itnim_s   *itnim = NULL;
 923
 924         /* Search the mapped list for this target ID */
 925         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 926                 if (id == itnim->scsi_tgt_id)
 927                         return itnim;
 928         }
 929
 930         return NULL;
 931 }
 932
 933 /*
 934  * Function is invoked from the SCSI Host Template slave_alloc() entry point.
 935  * Has the logic to query the LUN Mask database to check if this LUN needs to
 936  * be made visible to the SCSI mid-layer or not.
 937  *
 938  * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
 939  * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
 940  */
 941 static int
 942 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
 943                                   struct fc_rport *rport)
 944 {
 945         struct bfad_itnim_data_s *itnim_data =
 946                                 (struct bfad_itnim_data_s *) rport->dd_data;
 947         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 948         struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
 949         struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
 950         int i = 0, ret = -ENXIO;
 951
 952         for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
 953                 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
 954                     scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
 955                     lun_list[i].rp_tag == bfa_rport->rport_tag &&
 956                     lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
 957                         ret = BFA_STATUS_OK;
 958                         break;
 959                 }
 960         }
 961         return ret;
 962 }
 963
 964 /*
 965  * Scsi_Host template entry slave_alloc
 966  */
 967 static int
 968 bfad_im_slave_alloc(struct scsi_device *sdev)
 969 {
 970         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 971         struct bfad_itnim_data_s *itnim_data;
 972         struct bfa_s *bfa;
 973
 974         if (!rport || fc_remote_port_chkready(rport))
 975                 return -ENXIO;
 976
 977         itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
 978         bfa = itnim_data->itnim->bfa_itnim->bfa;
 979
 980         if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
 981                 /*
 982                  * We should not mask LUN 0 - since this will translate
 983                  * to no LUN / TARGET for SCSI ml resulting no scan.
 984                  */
 985                 if (sdev->lun == 0) {
 986                         sdev->sdev_bflags |= BLIST_NOREPORTLUN |
 987                                              BLIST_SPARSELUN;
 988                         goto done;
 989                 }
 990
 991                 /*
 992                  * Query LUN Mask configuration - to expose this LUN
 993                  * to the SCSI mid-layer or to mask it.
 994                  */
 995                 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
 996                                                         BFA_STATUS_OK)
 997                         return -ENXIO;
 998         }
 999 done:
1000         sdev->hostdata = rport->dd_data;
1001
1002         return 0;
1003 }
1004
1005 u32
1006 bfad_im_supported_speeds(struct bfa_s *bfa)
1007 {
1008         struct bfa_ioc_attr_s *ioc_attr;
1009         u32 supported_speed = 0;
1010
1011         ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1012         if (!ioc_attr)
1013                 return 0;
1014
1015         bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1016         if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1017                 supported_speed |=  FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1018                                 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1019         else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1020                 if (ioc_attr->adapter_attr.is_mezz) {
1021                         supported_speed |= FC_PORTSPEED_8GBIT |
1022                                 FC_PORTSPEED_4GBIT |
1023                                 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1024                 } else {
1025                         supported_speed |= FC_PORTSPEED_8GBIT |
1026                                 FC_PORTSPEED_4GBIT |
1027                                 FC_PORTSPEED_2GBIT;
1028                 }
1029         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1030                 supported_speed |=  FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1031                                 FC_PORTSPEED_1GBIT;
1032         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1033                 supported_speed |= FC_PORTSPEED_10GBIT;
1034         }
1035         kfree(ioc_attr);
1036         return supported_speed;
1037 }
1038
1039 void
1040 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1041 {
1042         struct Scsi_Host *host = im_port->shost;
1043         struct bfad_s         *bfad = im_port->bfad;
1044         struct bfad_port_s    *port = im_port->port;
1045         char symname[BFA_SYMNAME_MAXLEN];
1046         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1047
1048         fc_host_node_name(host) =
1049                 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1050         fc_host_port_name(host) =
1051                 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1052         fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1053
1054         fc_host_supported_classes(host) = FC_COS_CLASS3;
1055
1056         memset(fc_host_supported_fc4s(host), 0,
1057                sizeof(fc_host_supported_fc4s(host)));
1058         if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1059                 /* For FCP type 0x08 */
1060                 fc_host_supported_fc4s(host)[2] = 1;
1061         /* For fibre channel services type 0x20 */
1062         fc_host_supported_fc4s(host)[7] = 1;
1063
1064         strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1065                 BFA_SYMNAME_MAXLEN);
1066         sprintf(fc_host_symbolic_name(host), "%s", symname);
1067
1068         fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1069         fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1070 }
1071
1072 static void
1073 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1074 {
1075         struct fc_rport_identifiers rport_ids;
1076         struct fc_rport *fc_rport;
1077         struct bfad_itnim_data_s *itnim_data;
1078
1079         rport_ids.node_name =
1080                 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1081         rport_ids.port_name =
1082                 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1083         rport_ids.port_id =
1084                 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1085         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1086
1087         itnim->fc_rport = fc_rport =
1088                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1089
1090         if (!fc_rport)
1091                 return;
1092
1093         fc_rport->maxframe_size =
1094                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1095         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1096
1097         itnim_data = fc_rport->dd_data;
1098         itnim_data->itnim = itnim;
1099
1100         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1101
1102         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1103                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1104
1105         if ((fc_rport->scsi_target_id != -1)
1106             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1107                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1108
1109         itnim->channel = fc_rport->channel;
1110
1111         return;
1112 }
1113
1114 /*
1115  * Work queue handler using FC transport service
1116 * Context: kernel
1117  */
1118 static void
1119 bfad_im_itnim_work_handler(struct work_struct *work)
1120 {
1121         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1122                                                         itnim_work);
1123         struct bfad_im_s      *im = itnim->im;
1124         struct bfad_s         *bfad = im->bfad;
1125         struct bfad_im_port_s *im_port;
1126         unsigned long   flags;
1127         struct fc_rport *fc_rport;
1128         wwn_t wwpn;
1129         u32 fcid;
1130         char wwpn_str[32], fcid_str[16];
1131
1132         spin_lock_irqsave(&bfad->bfad_lock, flags);
1133         im_port = itnim->im_port;
1134         bfa_trc(bfad, itnim->state);
1135         switch (itnim->state) {
1136         case ITNIM_STATE_ONLINE:
1137                 if (!itnim->fc_rport) {
1138                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1139                         bfad_im_fc_rport_add(im_port, itnim);
1140                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1141                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1142                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1143                         wwn2str(wwpn_str, wwpn);
1144                         fcid2str(fcid_str, fcid);
1145                         list_add_tail(&itnim->list_entry,
1146                                 &im_port->itnim_mapped_list);
1147                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1148                                 "ITNIM ONLINE Target: %d:0:%d "
1149                                 "FCID: %s WWPN: %s\n",
1150                                 im_port->shost->host_no,
1151                                 itnim->scsi_tgt_id,
1152                                 fcid_str, wwpn_str);
1153                 } else {
1154                         printk(KERN_WARNING
1155                                 "%s: itnim %llx is already in online state\n",
1156                                 __func__,
1157                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1158                 }
1159
1160                 break;
1161         case ITNIM_STATE_OFFLINE_PENDING:
1162                 itnim->state = ITNIM_STATE_OFFLINE;
1163                 if (itnim->fc_rport) {
1164                         fc_rport = itnim->fc_rport;
1165                         ((struct bfad_itnim_data_s *)
1166                                 fc_rport->dd_data)->itnim = NULL;
1167                         itnim->fc_rport = NULL;
1168                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1169                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1170                                 fc_rport->dev_loss_tmo =
1171                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1172                                 fc_remote_port_delete(fc_rport);
1173                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1174                         }
1175                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1176                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1177                         wwn2str(wwpn_str, wwpn);
1178                         fcid2str(fcid_str, fcid);
1179                         list_del(&itnim->list_entry);
1180                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1181                                 "ITNIM OFFLINE Target: %d:0:%d "
1182                                 "FCID: %s WWPN: %s\n",
1183                                 im_port->shost->host_no,
1184                                 itnim->scsi_tgt_id,
1185                                 fcid_str, wwpn_str);
1186                 }
1187                 break;
1188         case ITNIM_STATE_FREE:
1189                 if (itnim->fc_rport) {
1190                         fc_rport = itnim->fc_rport;
1191                         ((struct bfad_itnim_data_s *)
1192                                 fc_rport->dd_data)->itnim = NULL;
1193                         itnim->fc_rport = NULL;
1194                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1195                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1196                                 fc_rport->dev_loss_tmo =
1197                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1198                                 fc_remote_port_delete(fc_rport);
1199                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1200                         }
1201                         list_del(&itnim->list_entry);
1202                 }
1203
1204                 kfree(itnim);
1205                 break;
1206         default:
1207                 WARN_ON(1);
1208                 break;
1209         }
1210
1211         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1212 }
1213
1214 /*
1215  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1216  */
1217 static int
1218 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1219 {
1220         struct bfad_im_port_s *im_port =
1221                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1222         struct bfad_s         *bfad = im_port->bfad;
1223         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1224         struct bfad_itnim_s   *itnim;
1225         struct bfa_ioim_s *hal_io;
1226         unsigned long   flags;
1227         int             rc;
1228         int       sg_cnt = 0;
1229         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1230
1231         rc = fc_remote_port_chkready(rport);
1232         if (rc) {
1233                 cmnd->result = rc;
1234                 done(cmnd);
1235                 return 0;
1236         }
1237
1238         if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1239                 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1240                         cmnd->result = DID_NO_CONNECT << 16;
1241                 else
1242                         cmnd->result = DID_REQUEUE << 16;
1243                 done(cmnd);
1244                 return 0;
1245         }
1246
1247         sg_cnt = scsi_dma_map(cmnd);
1248         if (sg_cnt < 0)
1249                 return SCSI_MLQUEUE_HOST_BUSY;
1250
1251         cmnd->scsi_done = done;
1252
1253         spin_lock_irqsave(&bfad->bfad_lock, flags);
1254         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1255                 printk(KERN_WARNING
1256                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1257                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1258                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1259                 goto out_fail_cmd;
1260         }
1261
1262
1263         itnim = itnim_data->itnim;
1264         if (!itnim) {
1265                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1266                 goto out_fail_cmd;
1267         }
1268
1269         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1270                                     itnim->bfa_itnim, sg_cnt);
1271         if (!hal_io) {
1272                 printk(KERN_WARNING "hal_io failure\n");
1273                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1274                 scsi_dma_unmap(cmnd);
1275                 return SCSI_MLQUEUE_HOST_BUSY;
1276         }
1277
1278         cmnd->host_scribble = (char *)hal_io;
1279         bfa_ioim_start(hal_io);
1280         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1281
1282         return 0;
1283
1284 out_fail_cmd:
1285         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1286         scsi_dma_unmap(cmnd);
1287         if (done)
1288                 done(cmnd);
1289
1290         return 0;
1291 }
1292
1293 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1294
1295 void
1296 bfad_rport_online_wait(struct bfad_s *bfad)
1297 {
1298         int i;
1299         int rport_delay = 10;
1300
1301         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1302                 && i < bfa_linkup_delay; i++) {
1303                 set_current_state(TASK_UNINTERRUPTIBLE);
1304                 schedule_timeout(HZ);
1305         }
1306
1307         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1308                 rport_delay = rport_delay < bfa_linkup_delay ?
1309                         rport_delay : bfa_linkup_delay;
1310                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1311                         && i < rport_delay; i++) {
1312                         set_current_state(TASK_UNINTERRUPTIBLE);
1313                         schedule_timeout(HZ);
1314                 }
1315
1316                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1317                         set_current_state(TASK_UNINTERRUPTIBLE);
1318                         schedule_timeout(rport_delay * HZ);
1319                 }
1320         }
1321 }
1322
1323 int
1324 bfad_get_linkup_delay(struct bfad_s *bfad)
1325 {
1326         u8              nwwns = 0;
1327         wwn_t           wwns[BFA_PREBOOT_BOOTLUN_MAX];
1328         int             linkup_delay;
1329
1330         /*
1331          * Querying for the boot target port wwns
1332          * -- read from boot information in flash.
1333          * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1334          * else => local boot machine set linkup_delay = 0
1335          */
1336
1337         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1338
1339         if (nwwns > 0)
1340                 /* If Boot over SAN set linkup_delay = 30sec */
1341                 linkup_delay = 30;
1342         else
1343                 /* If local boot; no linkup_delay */
1344                 linkup_delay = 0;
1345
1346         return linkup_delay;
1347 }