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