Pileus Git - ~andy/linux/blob - drivers/scsi/bfa/bfad_im.c

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