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 target and abort all commands.
 377  */
 378 static int
 379 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
 380 {
 381         struct Scsi_Host *shost = cmnd->device->host;
 382         struct scsi_target *starget = scsi_target(cmnd->device);
 383         struct bfad_im_port_s *im_port =
 384                                 (struct bfad_im_port_s *) shost->hostdata[0];
 385         struct bfad_s         *bfad = im_port->bfad;
 386         struct bfad_itnim_s   *itnim;
 387         unsigned long   flags;
 388         u32        rc, rtn = FAILED;
 389         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 390         enum bfi_tskim_status task_status;
 391
 392         spin_lock_irqsave(&bfad->bfad_lock, flags);
 393         itnim = bfad_get_itnim(im_port, starget->id);
 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                         /* wait target reset to complete */
 399                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 400                         wait_event(wq, test_bit(IO_DONE_BIT,
 401                                         (unsigned long *)&cmnd->SCp.Status));
 402                         spin_lock_irqsave(&bfad->bfad_lock, flags);
 403
 404                         task_status = cmnd->SCp.Status >> 1;
 405                         if (task_status != BFI_TSKIM_STS_OK)
 406                                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 407                                         "target reset failure,"
 408                                         " status: %d\n", task_status);
 409                         else
 410                                 rtn = SUCCESS;
 411                 }
 412         }
 413         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 414
 415         return rtn;
 416 }
 417
 418 /*
 419  * Scsi_Host template entry slave_destroy.
 420  */
 421 static void
 422 bfad_im_slave_destroy(struct scsi_device *sdev)
 423 {
 424         sdev->hostdata = NULL;
 425         return;
 426 }
 427
 428 /*
 429  *  BFA FCS itnim callbacks
 430  */
 431
 432 /*
 433  * BFA FCS itnim alloc callback, after successful PRLI
 434  * Context: Interrupt
 435  */
 436 int
 437 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
 438                     struct bfad_itnim_s **itnim_drv)
 439 {
 440         *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
 441         if (*itnim_drv == NULL)
 442                 return -ENOMEM;
 443
 444         (*itnim_drv)->im = bfad->im;
 445         *itnim = &(*itnim_drv)->fcs_itnim;
 446         (*itnim_drv)->state = ITNIM_STATE_NONE;
 447
 448         /*
 449          * Initiaze the itnim_work
 450          */
 451         INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
 452         bfad->bfad_flags |= BFAD_RPORT_ONLINE;
 453         return 0;
 454 }
 455
 456 /*
 457  * BFA FCS itnim free callback.
 458  * Context: Interrupt. bfad_lock is held
 459  */
 460 void
 461 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
 462 {
 463         struct bfad_port_s    *port;
 464         wwn_t wwpn;
 465         u32 fcid;
 466         char wwpn_str[32], fcid_str[16];
 467         struct bfad_im_s        *im = itnim_drv->im;
 468
 469         /* online to free state transtion should not happen */
 470         WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
 471
 472         itnim_drv->queue_work = 1;
 473         /* offline request is not yet done, use the same request to free */
 474         if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
 475                 itnim_drv->queue_work = 0;
 476
 477         itnim_drv->state = ITNIM_STATE_FREE;
 478         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 479         itnim_drv->im_port = port->im_port;
 480         wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
 481         fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
 482         wwn2str(wwpn_str, wwpn);
 483         fcid2str(fcid_str, fcid);
 484         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 485                 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
 486                 port->im_port->shost->host_no,
 487                 fcid_str, wwpn_str);
 488
 489         /* ITNIM processing */
 490         if (itnim_drv->queue_work)
 491                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 492 }
 493
 494 /*
 495  * BFA FCS itnim online callback.
 496  * Context: Interrupt. bfad_lock is held
 497  */
 498 void
 499 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
 500 {
 501         struct bfad_port_s    *port;
 502         struct bfad_im_s        *im = itnim_drv->im;
 503
 504         itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
 505         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 506         itnim_drv->state = ITNIM_STATE_ONLINE;
 507         itnim_drv->queue_work = 1;
 508         itnim_drv->im_port = port->im_port;
 509
 510         /* ITNIM processing */
 511         if (itnim_drv->queue_work)
 512                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 513 }
 514
 515 /*
 516  * BFA FCS itnim offline callback.
 517  * Context: Interrupt. bfad_lock is held
 518  */
 519 void
 520 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
 521 {
 522         struct bfad_port_s    *port;
 523         struct bfad_s *bfad;
 524         struct bfad_im_s        *im = itnim_drv->im;
 525
 526         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 527         bfad = port->bfad;
 528         if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
 529                  (port->flags & BFAD_PORT_DELETE)) {
 530                 itnim_drv->state = ITNIM_STATE_OFFLINE;
 531                 return;
 532         }
 533         itnim_drv->im_port = port->im_port;
 534         itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
 535         itnim_drv->queue_work = 1;
 536
 537         /* ITNIM processing */
 538         if (itnim_drv->queue_work)
 539                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 540 }
 541
 542 /*
 543  * Allocate a Scsi_Host for a port.
 544  */
 545 int
 546 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
 547                         struct device *dev)
 548 {
 549         struct bfad_im_port_pointer *im_portp;
 550         int error = 1;
 551
 552         mutex_lock(&bfad_mutex);
 553         error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
 554         if (error < 0) {
 555                 mutex_unlock(&bfad_mutex);
 556                 printk(KERN_WARNING "idr_alloc failure\n");
 557                 goto out;
 558         }
 559         im_port->idr_id = error;
 560         mutex_unlock(&bfad_mutex);
 561
 562         im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
 563         if (!im_port->shost) {
 564                 error = 1;
 565                 goto out_free_idr;
 566         }
 567
 568         im_portp = shost_priv(im_port->shost);
 569         im_portp->p = im_port;
 570         im_port->shost->unique_id = im_port->idr_id;
 571         im_port->shost->this_id = -1;
 572         im_port->shost->max_id = MAX_FCP_TARGET;
 573         im_port->shost->max_lun = MAX_FCP_LUN;
 574         im_port->shost->max_cmd_len = 16;
 575         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 576         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 577                 im_port->shost->transportt = bfad_im_scsi_transport_template;
 578         else
 579                 im_port->shost->transportt =
 580                                 bfad_im_scsi_vport_transport_template;
 581
 582         error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
 583         if (error) {
 584                 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
 585                 goto out_fc_rel;
 586         }
 587
 588         return 0;
 589
 590 out_fc_rel:
 591         scsi_host_put(im_port->shost);
 592         im_port->shost = NULL;
 593 out_free_idr:
 594         mutex_lock(&bfad_mutex);
 595         idr_remove(&bfad_im_port_index, im_port->idr_id);
 596         mutex_unlock(&bfad_mutex);
 597 out:
 598         return error;
 599 }
 600
 601 void
 602 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 603 {
 604         bfa_trc(bfad, bfad->inst_no);
 605         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
 606                         im_port->shost->host_no);
 607
 608         fc_remove_host(im_port->shost);
 609
 610         scsi_remove_host(im_port->shost);
 611         scsi_host_put(im_port->shost);
 612
 613         mutex_lock(&bfad_mutex);
 614         idr_remove(&bfad_im_port_index, im_port->idr_id);
 615         mutex_unlock(&bfad_mutex);
 616 }
 617
 618 static void
 619 bfad_im_port_delete_handler(struct work_struct *work)
 620 {
 621         struct bfad_im_port_s *im_port =
 622                 container_of(work, struct bfad_im_port_s, port_delete_work);
 623
 624         if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
 625                 im_port->flags |= BFAD_PORT_DELETE;
 626                 fc_vport_terminate(im_port->fc_vport);
 627         }
 628 }
 629
 630 bfa_status_t
 631 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 632 {
 633         int             rc = BFA_STATUS_OK;
 634         struct bfad_im_port_s *im_port;
 635
 636         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 637         if (im_port == NULL) {
 638                 rc = BFA_STATUS_ENOMEM;
 639                 goto ext;
 640         }
 641         port->im_port = im_port;
 642         im_port->port = port;
 643         im_port->bfad = bfad;
 644
 645         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 646         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 647         INIT_LIST_HEAD(&im_port->binding_list);
 648
 649 ext:
 650         return rc;
 651 }
 652
 653 void
 654 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 655 {
 656         struct bfad_im_port_s *im_port = port->im_port;
 657
 658         queue_work(bfad->im->drv_workq,
 659                                 &im_port->port_delete_work);
 660 }
 661
 662 void
 663 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 664 {
 665         struct bfad_fcp_binding *bp, *bp_new;
 666         unsigned long flags;
 667         struct bfad_s *bfad =  im_port->bfad;
 668
 669         spin_lock_irqsave(&bfad->bfad_lock, flags);
 670         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 671                                         list_entry) {
 672                 list_del(&bp->list_entry);
 673                 kfree(bp);
 674         }
 675
 676         /* the itnim_mapped_list must be empty at this time */
 677         WARN_ON(!list_empty(&im_port->itnim_mapped_list));
 678
 679         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 680 }
 681
 682 static void bfad_aen_im_notify_handler(struct work_struct *work)
 683 {
 684         struct bfad_im_s *im =
 685                 container_of(work, struct bfad_im_s, aen_im_notify_work);
 686         struct bfa_aen_entry_s *aen_entry;
 687         struct bfad_s *bfad = im->bfad;
 688         struct Scsi_Host *shost = bfad->pport.im_port->shost;
 689         void *event_data;
 690         unsigned long flags;
 691
 692         while (!list_empty(&bfad->active_aen_q)) {
 693                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 694                 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
 695                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 696                 event_data = (char *)aen_entry + sizeof(struct list_head);
 697                 fc_host_post_vendor_event(shost, fc_get_event_number(),
 698                                 sizeof(struct bfa_aen_entry_s) -
 699                                 sizeof(struct list_head),
 700                                 (char *)event_data, BFAD_NL_VENDOR_ID);
 701                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 702                 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
 703                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 704         }
 705 }
 706
 707 bfa_status_t
 708 bfad_im_probe(struct bfad_s *bfad)
 709 {
 710         struct bfad_im_s      *im;
 711
 712         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 713         if (im == NULL)
 714                 return BFA_STATUS_ENOMEM;
 715
 716         bfad->im = im;
 717         im->bfad = bfad;
 718
 719         if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
 720                 kfree(im);
 721                 return BFA_STATUS_FAILED;
 722         }
 723
 724         INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
 725         return BFA_STATUS_OK;
 726 }
 727
 728 void
 729 bfad_im_probe_undo(struct bfad_s *bfad)
 730 {
 731         if (bfad->im) {
 732                 bfad_destroy_workq(bfad->im);
 733                 kfree(bfad->im);
 734                 bfad->im = NULL;
 735         }
 736 }
 737
 738 struct Scsi_Host *
 739 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 740 {
 741         struct scsi_host_template *sht;
 742
 743         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 744                 sht = &bfad_im_scsi_host_template;
 745         else
 746                 sht = &bfad_im_vport_template;
 747
 748         if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
 749                 sht->max_sectors = max_xfer_size << 1;
 750
 751         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 752
 753         return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
 754 }
 755
 756 void
 757 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 758 {
 759         if (!(im_port->flags & BFAD_PORT_DELETE))
 760                 flush_workqueue(bfad->im->drv_workq);
 761         bfad_im_scsi_host_free(im_port->bfad, im_port);
 762         bfad_im_port_clean(im_port);
 763         kfree(im_port);
 764 }
 765
 766 void
 767 bfad_destroy_workq(struct bfad_im_s *im)
 768 {
 769         if (im && im->drv_workq) {
 770                 flush_workqueue(im->drv_workq);
 771                 destroy_workqueue(im->drv_workq);
 772                 im->drv_workq = NULL;
 773         }
 774 }
 775
 776 bfa_status_t
 777 bfad_thread_workq(struct bfad_s *bfad)
 778 {
 779         struct bfad_im_s      *im = bfad->im;
 780
 781         bfa_trc(bfad, 0);
 782         snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
 783                  bfad->inst_no);
 784         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 785         if (!im->drv_workq)
 786                 return BFA_STATUS_FAILED;
 787
 788         return BFA_STATUS_OK;
 789 }
 790
 791 /*
 792  * Scsi_Host template entry.
 793  *
 794  * Description:
 795  * OS entry point to adjust the queue_depths on a per-device basis.
 796  * Called once per device during the bus scan.
 797  * Return non-zero if fails.
 798  */
 799 static int
 800 bfad_im_slave_configure(struct scsi_device *sdev)
 801 {
 802         scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
 803         return 0;
 804 }
 805
 806 struct scsi_host_template bfad_im_scsi_host_template = {
 807         .module = THIS_MODULE,
 808         .name = BFAD_DRIVER_NAME,
 809         .info = bfad_im_info,
 810         .queuecommand = bfad_im_queuecommand,
 811         .eh_timed_out = fc_eh_timed_out,
 812         .eh_abort_handler = bfad_im_abort_handler,
 813         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 814         .eh_target_reset_handler = bfad_im_reset_target_handler,
 815
 816         .slave_alloc = bfad_im_slave_alloc,
 817         .slave_configure = bfad_im_slave_configure,
 818         .slave_destroy = bfad_im_slave_destroy,
 819
 820         .this_id = -1,
 821         .sg_tablesize = BFAD_IO_MAX_SGE,
 822         .cmd_per_lun = 3,
 823         .use_clustering = ENABLE_CLUSTERING,
 824         .shost_attrs = bfad_im_host_attrs,
 825         .max_sectors = BFAD_MAX_SECTORS,
 826         .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
 827 };
 828
 829 struct scsi_host_template bfad_im_vport_template = {
 830         .module = THIS_MODULE,
 831         .name = BFAD_DRIVER_NAME,
 832         .info = bfad_im_info,
 833         .queuecommand = bfad_im_queuecommand,
 834         .eh_timed_out = fc_eh_timed_out,
 835         .eh_abort_handler = bfad_im_abort_handler,
 836         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 837         .eh_target_reset_handler = bfad_im_reset_target_handler,
 838
 839         .slave_alloc = bfad_im_slave_alloc,
 840         .slave_configure = bfad_im_slave_configure,
 841         .slave_destroy = bfad_im_slave_destroy,
 842
 843         .this_id = -1,
 844         .sg_tablesize = BFAD_IO_MAX_SGE,
 845         .cmd_per_lun = 3,
 846         .use_clustering = ENABLE_CLUSTERING,
 847         .shost_attrs = bfad_im_vport_attrs,
 848         .max_sectors = BFAD_MAX_SECTORS,
 849 };
 850
 851 bfa_status_t
 852 bfad_im_module_init(void)
 853 {
 854         bfad_im_scsi_transport_template =
 855                 fc_attach_transport(&bfad_im_fc_function_template);
 856         if (!bfad_im_scsi_transport_template)
 857                 return BFA_STATUS_ENOMEM;
 858
 859         bfad_im_scsi_vport_transport_template =
 860                 fc_attach_transport(&bfad_im_vport_fc_function_template);
 861         if (!bfad_im_scsi_vport_transport_template) {
 862                 fc_release_transport(bfad_im_scsi_transport_template);
 863                 return BFA_STATUS_ENOMEM;
 864         }
 865
 866         return BFA_STATUS_OK;
 867 }
 868
 869 void
 870 bfad_im_module_exit(void)
 871 {
 872         if (bfad_im_scsi_transport_template)
 873                 fc_release_transport(bfad_im_scsi_transport_template);
 874
 875         if (bfad_im_scsi_vport_transport_template)
 876                 fc_release_transport(bfad_im_scsi_vport_transport_template);
 877
 878         idr_destroy(&bfad_im_port_index);
 879 }
 880
 881 void
 882 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 883 {
 884         struct scsi_device *tmp_sdev;
 885
 886         if (((jiffies - itnim->last_ramp_up_time) >
 887                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 888                 ((jiffies - itnim->last_queue_full_time) >
 889                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 890                 shost_for_each_device(tmp_sdev, sdev->host) {
 891                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 892                                 if (tmp_sdev->id != sdev->id)
 893                                         continue;
 894                                 scsi_change_queue_depth(tmp_sdev,
 895                                         tmp_sdev->queue_depth + 1);
 896
 897                                 itnim->last_ramp_up_time = jiffies;
 898                         }
 899                 }
 900         }
 901 }
 902
 903 void
 904 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 905 {
 906         struct scsi_device *tmp_sdev;
 907
 908         itnim->last_queue_full_time = jiffies;
 909
 910         shost_for_each_device(tmp_sdev, sdev->host) {
 911                 if (tmp_sdev->id != sdev->id)
 912                         continue;
 913                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 914         }
 915 }
 916
 917 struct bfad_itnim_s *
 918 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
 919 {
 920         struct bfad_itnim_s   *itnim = NULL;
 921
 922         /* Search the mapped list for this target ID */
 923         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 924                 if (id == itnim->scsi_tgt_id)
 925                         return itnim;
 926         }
 927
 928         return NULL;
 929 }
 930
 931 /*
 932  * Function is invoked from the SCSI Host Template slave_alloc() entry point.
 933  * Has the logic to query the LUN Mask database to check if this LUN needs to
 934  * be made visible to the SCSI mid-layer or not.
 935  *
 936  * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
 937  * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
 938  */
 939 static int
 940 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
 941                                   struct fc_rport *rport)
 942 {
 943         struct bfad_itnim_data_s *itnim_data =
 944                                 (struct bfad_itnim_data_s *) rport->dd_data;
 945         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 946         struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
 947         struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
 948         int i = 0, ret = -ENXIO;
 949
 950         for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
 951                 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
 952                     scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
 953                     lun_list[i].rp_tag == bfa_rport->rport_tag &&
 954                     lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
 955                         ret = BFA_STATUS_OK;
 956                         break;
 957                 }
 958         }
 959         return ret;
 960 }
 961
 962 /*
 963  * Scsi_Host template entry slave_alloc
 964  */
 965 static int
 966 bfad_im_slave_alloc(struct scsi_device *sdev)
 967 {
 968         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 969         struct bfad_itnim_data_s *itnim_data;
 970         struct bfa_s *bfa;
 971
 972         if (!rport || fc_remote_port_chkready(rport))
 973                 return -ENXIO;
 974
 975         itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
 976         bfa = itnim_data->itnim->bfa_itnim->bfa;
 977
 978         if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
 979                 /*
 980                  * We should not mask LUN 0 - since this will translate
 981                  * to no LUN / TARGET for SCSI ml resulting no scan.
 982                  */
 983                 if (sdev->lun == 0) {
 984                         sdev->sdev_bflags |= BLIST_NOREPORTLUN |
 985                                              BLIST_SPARSELUN;
 986                         goto done;
 987                 }
 988
 989                 /*
 990                  * Query LUN Mask configuration - to expose this LUN
 991                  * to the SCSI mid-layer or to mask it.
 992                  */
 993                 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
 994                                                         BFA_STATUS_OK)
 995                         return -ENXIO;
 996         }
 997 done:
 998         sdev->hostdata = rport->dd_data;
 999
1000         return 0;
1001 }
1002
1003 u32
1004 bfad_im_supported_speeds(struct bfa_s *bfa)
1005 {
1006         struct bfa_ioc_attr_s *ioc_attr;
1007         u32 supported_speed = 0;
1008
1009         ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1010         if (!ioc_attr)
1011                 return 0;
1012
1013         bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1014         if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1015                 supported_speed |=  FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1016                                 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1017         else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1018                 if (ioc_attr->adapter_attr.is_mezz) {
1019                         supported_speed |= FC_PORTSPEED_8GBIT |
1020                                 FC_PORTSPEED_4GBIT |
1021                                 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1022                 } else {
1023                         supported_speed |= FC_PORTSPEED_8GBIT |
1024                                 FC_PORTSPEED_4GBIT |
1025                                 FC_PORTSPEED_2GBIT;
1026                 }
1027         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1028                 supported_speed |=  FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1029                                 FC_PORTSPEED_1GBIT;
1030         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1031                 supported_speed |= FC_PORTSPEED_10GBIT;
1032         }
1033         kfree(ioc_attr);
1034         return supported_speed;
1035 }
1036
1037 void
1038 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1039 {
1040         struct Scsi_Host *host = im_port->shost;
1041         struct bfad_s         *bfad = im_port->bfad;
1042         struct bfad_port_s    *port = im_port->port;
1043         char symname[BFA_SYMNAME_MAXLEN];
1044         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1045
1046         fc_host_node_name(host) =
1047                 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1048         fc_host_port_name(host) =
1049                 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1050         fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1051
1052         fc_host_supported_classes(host) = FC_COS_CLASS3;
1053
1054         memset(fc_host_supported_fc4s(host), 0,
1055                sizeof(fc_host_supported_fc4s(host)));
1056         if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1057                 /* For FCP type 0x08 */
1058                 fc_host_supported_fc4s(host)[2] = 1;
1059         /* For fibre channel services type 0x20 */
1060         fc_host_supported_fc4s(host)[7] = 1;
1061
1062         strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1063                 BFA_SYMNAME_MAXLEN);
1064         sprintf(fc_host_symbolic_name(host), "%s", symname);
1065
1066         fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1067         fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1068 }
1069
1070 static void
1071 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1072 {
1073         struct fc_rport_identifiers rport_ids;
1074         struct fc_rport *fc_rport;
1075         struct bfad_itnim_data_s *itnim_data;
1076
1077         rport_ids.node_name =
1078                 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1079         rport_ids.port_name =
1080                 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1081         rport_ids.port_id =
1082                 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1083         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1084
1085         itnim->fc_rport = fc_rport =
1086                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1087
1088         if (!fc_rport)
1089                 return;
1090
1091         fc_rport->maxframe_size =
1092                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1093         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1094
1095         itnim_data = fc_rport->dd_data;
1096         itnim_data->itnim = itnim;
1097
1098         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1099
1100         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1101                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1102
1103         if ((fc_rport->scsi_target_id != -1)
1104             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1105                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1106
1107         itnim->channel = fc_rport->channel;
1108
1109         return;
1110 }
1111
1112 /*
1113  * Work queue handler using FC transport service
1114 * Context: kernel
1115  */
1116 static void
1117 bfad_im_itnim_work_handler(struct work_struct *work)
1118 {
1119         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1120                                                         itnim_work);
1121         struct bfad_im_s      *im = itnim->im;
1122         struct bfad_s         *bfad = im->bfad;
1123         struct bfad_im_port_s *im_port;
1124         unsigned long   flags;
1125         struct fc_rport *fc_rport;
1126         wwn_t wwpn;
1127         u32 fcid;
1128         char wwpn_str[32], fcid_str[16];
1129
1130         spin_lock_irqsave(&bfad->bfad_lock, flags);
1131         im_port = itnim->im_port;
1132         bfa_trc(bfad, itnim->state);
1133         switch (itnim->state) {
1134         case ITNIM_STATE_ONLINE:
1135                 if (!itnim->fc_rport) {
1136                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1137                         bfad_im_fc_rport_add(im_port, itnim);
1138                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1139                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1140                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1141                         wwn2str(wwpn_str, wwpn);
1142                         fcid2str(fcid_str, fcid);
1143                         list_add_tail(&itnim->list_entry,
1144                                 &im_port->itnim_mapped_list);
1145                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1146                                 "ITNIM ONLINE Target: %d:0:%d "
1147                                 "FCID: %s WWPN: %s\n",
1148                                 im_port->shost->host_no,
1149                                 itnim->scsi_tgt_id,
1150                                 fcid_str, wwpn_str);
1151                 } else {
1152                         printk(KERN_WARNING
1153                                 "%s: itnim %llx is already in online state\n",
1154                                 __func__,
1155                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1156                 }
1157
1158                 break;
1159         case ITNIM_STATE_OFFLINE_PENDING:
1160                 itnim->state = ITNIM_STATE_OFFLINE;
1161                 if (itnim->fc_rport) {
1162                         fc_rport = itnim->fc_rport;
1163                         ((struct bfad_itnim_data_s *)
1164                                 fc_rport->dd_data)->itnim = NULL;
1165                         itnim->fc_rport = NULL;
1166                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1167                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1168                                 fc_rport->dev_loss_tmo =
1169                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1170                                 fc_remote_port_delete(fc_rport);
1171                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1172                         }
1173                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1174                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1175                         wwn2str(wwpn_str, wwpn);
1176                         fcid2str(fcid_str, fcid);
1177                         list_del(&itnim->list_entry);
1178                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1179                                 "ITNIM OFFLINE Target: %d:0:%d "
1180                                 "FCID: %s WWPN: %s\n",
1181                                 im_port->shost->host_no,
1182                                 itnim->scsi_tgt_id,
1183                                 fcid_str, wwpn_str);
1184                 }
1185                 break;
1186         case ITNIM_STATE_FREE:
1187                 if (itnim->fc_rport) {
1188                         fc_rport = itnim->fc_rport;
1189                         ((struct bfad_itnim_data_s *)
1190                                 fc_rport->dd_data)->itnim = NULL;
1191                         itnim->fc_rport = NULL;
1192                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1193                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1194                                 fc_rport->dev_loss_tmo =
1195                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1196                                 fc_remote_port_delete(fc_rport);
1197                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1198                         }
1199                         list_del(&itnim->list_entry);
1200                 }
1201
1202                 kfree(itnim);
1203                 break;
1204         default:
1205                 WARN_ON(1);
1206                 break;
1207         }
1208
1209         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1210 }
1211
1212 /*
1213  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1214  */
1215 static int
1216 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1217 {
1218         struct bfad_im_port_s *im_port =
1219                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1220         struct bfad_s         *bfad = im_port->bfad;
1221         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1222         struct bfad_itnim_s   *itnim;
1223         struct bfa_ioim_s *hal_io;
1224         unsigned long   flags;
1225         int             rc;
1226         int       sg_cnt = 0;
1227         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1228
1229         rc = fc_remote_port_chkready(rport);
1230         if (rc) {
1231                 cmnd->result = rc;
1232                 done(cmnd);
1233                 return 0;
1234         }
1235
1236         if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1237                 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1238                         cmnd->result = DID_NO_CONNECT << 16;
1239                 else
1240                         cmnd->result = DID_REQUEUE << 16;
1241                 done(cmnd);
1242                 return 0;
1243         }
1244
1245         sg_cnt = scsi_dma_map(cmnd);
1246         if (sg_cnt < 0)
1247                 return SCSI_MLQUEUE_HOST_BUSY;
1248
1249         cmnd->scsi_done = done;
1250
1251         spin_lock_irqsave(&bfad->bfad_lock, flags);
1252         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1253                 printk(KERN_WARNING
1254                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1255                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1256                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1257                 goto out_fail_cmd;
1258         }
1259
1260
1261         itnim = itnim_data->itnim;
1262         if (!itnim) {
1263                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1264                 goto out_fail_cmd;
1265         }
1266
1267         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1268                                     itnim->bfa_itnim, sg_cnt);
1269         if (!hal_io) {
1270                 printk(KERN_WARNING "hal_io failure\n");
1271                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1272                 scsi_dma_unmap(cmnd);
1273                 return SCSI_MLQUEUE_HOST_BUSY;
1274         }
1275
1276         cmnd->host_scribble = (char *)hal_io;
1277         bfa_ioim_start(hal_io);
1278         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1279
1280         return 0;
1281
1282 out_fail_cmd:
1283         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1284         scsi_dma_unmap(cmnd);
1285         if (done)
1286                 done(cmnd);
1287
1288         return 0;
1289 }
1290
1291 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1292
1293 void
1294 bfad_rport_online_wait(struct bfad_s *bfad)
1295 {
1296         int i;
1297         int rport_delay = 10;
1298
1299         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1300                 && i < bfa_linkup_delay; i++) {
1301                 set_current_state(TASK_UNINTERRUPTIBLE);
1302                 schedule_timeout(HZ);
1303         }
1304
1305         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1306                 rport_delay = rport_delay < bfa_linkup_delay ?
1307                         rport_delay : bfa_linkup_delay;
1308                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1309                         && i < rport_delay; i++) {
1310                         set_current_state(TASK_UNINTERRUPTIBLE);
1311                         schedule_timeout(HZ);
1312                 }
1313
1314                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1315                         set_current_state(TASK_UNINTERRUPTIBLE);
1316                         schedule_timeout(rport_delay * HZ);
1317                 }
1318         }
1319 }
1320
1321 int
1322 bfad_get_linkup_delay(struct bfad_s *bfad)
1323 {
1324         u8              nwwns = 0;
1325         wwn_t           wwns[BFA_PREBOOT_BOOTLUN_MAX];
1326         int             linkup_delay;
1327
1328         /*
1329          * Querying for the boot target port wwns
1330          * -- read from boot information in flash.
1331          * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1332          * else => local boot machine set linkup_delay = 0
1333          */
1334
1335         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1336
1337         if (nwwns > 0)
1338                 /* If Boot over SAN set linkup_delay = 30sec */
1339                 linkup_delay = 30;
1340         else
1341                 /* If local boot; no linkup_delay */
1342                 linkup_delay = 0;
1343
1344         return linkup_delay;
1345 }