SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/scsi/bfa/bfad_im.c

   1 /*
   2  * Copyright (c) 2005-2009 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/slab.h>
  23 #include "bfad_drv.h"
  24 #include "bfad_im.h"
  25 #include "bfad_trcmod.h"
  26 #include "bfa_cb_ioim_macros.h"
  27 #include <fcb/bfa_fcb_fcpim.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_cmnd *cmnd,
  36                 void (*done)(struct scsi_cmnd *));
  37 static int bfad_im_slave_alloc(struct scsi_device *sdev);
  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                 if (residue > 0) {
  62                         bfa_trc(bfad, residue);
  63                         scsi_set_resid(cmnd, residue);
  64                         if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
  65                                 (scsi_bufflen(cmnd) - residue) <
  66                                         cmnd->underflow) {
  67                                 bfa_trc(bfad, 0);
  68                                 host_status = DID_ERROR;
  69                         }
  70                 }
  71                 cmnd->result = ScsiResult(host_status, scsi_status);
  72
  73                 break;
  74
  75         case BFI_IOIM_STS_ABORTED:
  76         case BFI_IOIM_STS_TIMEDOUT:
  77         case BFI_IOIM_STS_PATHTOV:
  78         default:
  79                 cmnd->result = ScsiResult(DID_ERROR, 0);
  80         }
  81
  82         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
  83         if (cmnd->device->host != NULL)
  84                 scsi_dma_unmap(cmnd);
  85
  86         cmnd->host_scribble = NULL;
  87         bfa_trc(bfad, cmnd->result);
  88
  89         itnim_data = cmnd->device->hostdata;
  90         if (itnim_data) {
  91                 itnim = itnim_data->itnim;
  92                 if (!cmnd->result && itnim &&
  93                          (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
  94                         /* Queue depth adjustment for good status completion */
  95                         bfad_os_ramp_up_qdepth(itnim, cmnd->device);
  96                 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
  97                         /* qfull handling */
  98                         bfad_os_handle_qfull(itnim, cmnd->device);
  99                 }
 100         }
 101
 102         cmnd->scsi_done(cmnd);
 103 }
 104
 105 void
 106 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
 107 {
 108         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 109         struct bfad_itnim_data_s *itnim_data;
 110         struct bfad_itnim_s *itnim;
 111
 112         cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
 113
 114         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 115         if (cmnd->device->host != NULL)
 116                 scsi_dma_unmap(cmnd);
 117
 118         cmnd->host_scribble = NULL;
 119
 120         /* Queue depth adjustment */
 121         if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
 122                 itnim_data = cmnd->device->hostdata;
 123                 if (itnim_data) {
 124                         itnim = itnim_data->itnim;
 125                         if (itnim)
 126                                 bfad_os_ramp_up_qdepth(itnim, cmnd->device);
 127                 }
 128         }
 129
 130         cmnd->scsi_done(cmnd);
 131 }
 132
 133 void
 134 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
 135 {
 136         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 137         struct bfad_s         *bfad = drv;
 138
 139         cmnd->result = ScsiResult(DID_ERROR, 0);
 140
 141         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 142         if (cmnd->device->host != NULL)
 143                 scsi_dma_unmap(cmnd);
 144
 145         bfa_trc(bfad, cmnd->result);
 146         cmnd->host_scribble = NULL;
 147 }
 148
 149 void
 150 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
 151                    enum bfi_tskim_status tsk_status)
 152 {
 153         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
 154         wait_queue_head_t *wq;
 155
 156         cmnd->SCp.Status |= tsk_status << 1;
 157         set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
 158         wq = (wait_queue_head_t *) cmnd->SCp.ptr;
 159         cmnd->SCp.ptr = NULL;
 160
 161         if (wq)
 162                 wake_up(wq);
 163 }
 164
 165 void
 166 bfa_cb_ioim_resfree(void *drv)
 167 {
 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         char model[BFA_ADAPTER_MODEL_NAME_LEN];
 184
 185         bfa_get_adapter_model(&bfad->bfa, model);
 186
 187         memset(bfa_buf, 0, sizeof(bfa_buf));
 188         snprintf(bfa_buf, sizeof(bfa_buf),
 189                 "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
 190                 model, bfad->pci_name, BFAD_DRIVER_VERSION);
 191         return bfa_buf;
 192 }
 193
 194 /**
 195  * Scsi_Host template entry, aborts the specified SCSI command.
 196  *
 197  * Returns: SUCCESS or FAILED.
 198  */
 199 static int
 200 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
 201 {
 202         struct Scsi_Host *shost = cmnd->device->host;
 203         struct bfad_im_port_s *im_port =
 204                         (struct bfad_im_port_s *) shost->hostdata[0];
 205         struct bfad_s         *bfad = im_port->bfad;
 206         struct bfa_ioim_s *hal_io;
 207         unsigned long   flags;
 208         u32        timeout;
 209         int             rc = FAILED;
 210
 211         spin_lock_irqsave(&bfad->bfad_lock, flags);
 212         hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 213         if (!hal_io) {
 214                 /* IO has been completed, retrun success */
 215                 rc = SUCCESS;
 216                 goto out;
 217         }
 218         if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
 219                 rc = FAILED;
 220                 goto out;
 221         }
 222
 223         bfa_trc(bfad, hal_io->iotag);
 224         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT,
 225                 im_port->shost->host_no, cmnd, hal_io->iotag);
 226         bfa_ioim_abort(hal_io);
 227         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 228
 229         /* Need to wait until the command get aborted */
 230         timeout = 10;
 231         while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
 232                 set_current_state(TASK_UNINTERRUPTIBLE);
 233                 schedule_timeout(timeout);
 234                 if (timeout < 4 * HZ)
 235                         timeout *= 2;
 236         }
 237
 238         cmnd->scsi_done(cmnd);
 239         bfa_trc(bfad, hal_io->iotag);
 240         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP,
 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
 256         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 257         if (!tskim) {
 258                 BFA_DEV_PRINTF(bfad, BFA_ERR,
 259                                "target reset, fail to allocate tskim\n");
 260                 rc = BFA_STATUS_FAILED;
 261                 goto out;
 262         }
 263
 264         /*
 265          * Set host_scribble to NULL to avoid aborting a task command if
 266          * happens.
 267          */
 268         cmnd->host_scribble = NULL;
 269         cmnd->SCp.Status = 0;
 270         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 271         bfa_tskim_start(tskim, bfa_itnim, (lun_t)0,
 272                             FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
 273 out:
 274         return rc;
 275 }
 276
 277 /**
 278  * Scsi_Host template entry, resets a LUN and abort its all commands.
 279  *
 280  * Returns: SUCCESS or FAILED.
 281  *
 282  */
 283 static int
 284 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
 285 {
 286         struct Scsi_Host *shost = cmnd->device->host;
 287         struct bfad_im_port_s *im_port =
 288                         (struct bfad_im_port_s *) shost->hostdata[0];
 289         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
 290         struct bfad_s         *bfad = im_port->bfad;
 291         struct bfa_tskim_s *tskim;
 292         struct bfad_itnim_s   *itnim;
 293         struct bfa_itnim_s *bfa_itnim;
 294         DECLARE_WAIT_QUEUE_HEAD(wq);
 295         int             rc = SUCCESS;
 296         unsigned long   flags;
 297         enum bfi_tskim_status task_status;
 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_DEV_PRINTF(bfad, BFA_ERR,
 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         bfa_tskim_start(tskim, bfa_itnim,
 325                             bfad_int_to_lun(cmnd->device->lun),
 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_DEV_PRINTF(bfad, BFA_ERR, "LUN reset failure, status: %d\n",
 335                                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(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_os_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_DEV_PRINTF(bfad, BFA_ERR,
 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
 442         /* online to free state transtion should not happen */
 443         bfa_assert(itnim_drv->state != ITNIM_STATE_ONLINE);
 444
 445         itnim_drv->queue_work = 1;
 446         /* offline request is not yet done, use the same request to free */
 447         if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
 448                 itnim_drv->queue_work = 0;
 449
 450         itnim_drv->state = ITNIM_STATE_FREE;
 451         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 452         itnim_drv->im_port = port->im_port;
 453         wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
 454         fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
 455         wwn2str(wwpn_str, wwpn);
 456         fcid2str(fcid_str, fcid);
 457         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_FREE,
 458                 port->im_port->shost->host_no,
 459                 fcid_str, wwpn_str);
 460         bfad_os_itnim_process(itnim_drv);
 461 }
 462
 463 /**
 464  * BFA FCS itnim online callback.
 465  * Context: Interrupt. bfad_lock is held
 466  */
 467 void
 468 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
 469 {
 470         struct bfad_port_s    *port;
 471
 472         itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
 473         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 474         itnim_drv->state = ITNIM_STATE_ONLINE;
 475         itnim_drv->queue_work = 1;
 476         itnim_drv->im_port = port->im_port;
 477         bfad_os_itnim_process(itnim_drv);
 478 }
 479
 480 /**
 481  * BFA FCS itnim offline callback.
 482  * Context: Interrupt. bfad_lock is held
 483  */
 484 void
 485 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
 486 {
 487         struct bfad_port_s    *port;
 488         struct bfad_s *bfad;
 489
 490         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 491         bfad = port->bfad;
 492         if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
 493                  (port->flags & BFAD_PORT_DELETE)) {
 494                 itnim_drv->state = ITNIM_STATE_OFFLINE;
 495                 return;
 496         }
 497         itnim_drv->im_port = port->im_port;
 498         itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
 499         itnim_drv->queue_work = 1;
 500         bfad_os_itnim_process(itnim_drv);
 501 }
 502
 503 /**
 504  * BFA FCS itnim timeout callback.
 505  * Context: Interrupt. bfad_lock is held
 506  */
 507 void bfa_fcb_itnim_tov(struct bfad_itnim_s *itnim)
 508 {
 509         itnim->state = ITNIM_STATE_TIMEOUT;
 510 }
 511
 512 /**
 513  * Allocate a Scsi_Host for a port.
 514  */
 515 int
 516 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
 517                                 struct device *dev)
 518 {
 519         int error = 1;
 520
 521         mutex_lock(&bfad_mutex);
 522         if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
 523                 mutex_unlock(&bfad_mutex);
 524                 printk(KERN_WARNING "idr_pre_get failure\n");
 525                 goto out;
 526         }
 527
 528         error = idr_get_new(&bfad_im_port_index, im_port,
 529                                          &im_port->idr_id);
 530         if (error) {
 531                 mutex_unlock(&bfad_mutex);
 532                 printk(KERN_WARNING "idr_get_new failure\n");
 533                 goto out;
 534         }
 535
 536         mutex_unlock(&bfad_mutex);
 537
 538         im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad);
 539         if (!im_port->shost) {
 540                 error = 1;
 541                 goto out_free_idr;
 542         }
 543
 544         im_port->shost->hostdata[0] = (unsigned long)im_port;
 545         im_port->shost->unique_id = im_port->idr_id;
 546         im_port->shost->this_id = -1;
 547         im_port->shost->max_id = MAX_FCP_TARGET;
 548         im_port->shost->max_lun = MAX_FCP_LUN;
 549         im_port->shost->max_cmd_len = 16;
 550         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 551         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 552                 im_port->shost->transportt = bfad_im_scsi_transport_template;
 553         else
 554                 im_port->shost->transportt =
 555                                 bfad_im_scsi_vport_transport_template;
 556
 557         error = scsi_add_host(im_port->shost, dev);
 558         if (error) {
 559                 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
 560                 goto out_fc_rel;
 561         }
 562
 563         /* setup host fixed attribute if the lk supports */
 564         bfad_os_fc_host_init(im_port);
 565
 566         return 0;
 567
 568 out_fc_rel:
 569         scsi_host_put(im_port->shost);
 570 out_free_idr:
 571         mutex_lock(&bfad_mutex);
 572         idr_remove(&bfad_im_port_index, im_port->idr_id);
 573         mutex_unlock(&bfad_mutex);
 574 out:
 575         return error;
 576 }
 577
 578 void
 579 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 580 {
 581         bfa_trc(bfad, bfad->inst_no);
 582         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE,
 583                         im_port->shost->host_no);
 584
 585         fc_remove_host(im_port->shost);
 586
 587         scsi_remove_host(im_port->shost);
 588         scsi_host_put(im_port->shost);
 589
 590         mutex_lock(&bfad_mutex);
 591         idr_remove(&bfad_im_port_index, im_port->idr_id);
 592         mutex_unlock(&bfad_mutex);
 593 }
 594
 595 static void
 596 bfad_im_port_delete_handler(struct work_struct *work)
 597 {
 598         struct bfad_im_port_s *im_port =
 599                 container_of(work, struct bfad_im_port_s, port_delete_work);
 600
 601         if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
 602                 im_port->flags |= BFAD_PORT_DELETE;
 603                 fc_vport_terminate(im_port->fc_vport);
 604         }
 605
 606 }
 607
 608 bfa_status_t
 609 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 610 {
 611         int             rc = BFA_STATUS_OK;
 612         struct bfad_im_port_s *im_port;
 613
 614         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 615         if (im_port == NULL) {
 616                 rc = BFA_STATUS_ENOMEM;
 617                 goto ext;
 618         }
 619         port->im_port = im_port;
 620         im_port->port = port;
 621         im_port->bfad = bfad;
 622
 623         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 624         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 625         INIT_LIST_HEAD(&im_port->binding_list);
 626
 627 ext:
 628         return rc;
 629 }
 630
 631 void
 632 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 633 {
 634         struct bfad_im_port_s *im_port = port->im_port;
 635
 636         queue_work(bfad->im->drv_workq,
 637                                 &im_port->port_delete_work);
 638 }
 639
 640 void
 641 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 642 {
 643         struct bfad_fcp_binding *bp, *bp_new;
 644         unsigned long flags;
 645         struct bfad_s *bfad =  im_port->bfad;
 646
 647         spin_lock_irqsave(&bfad->bfad_lock, flags);
 648         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 649                                         list_entry) {
 650                 list_del(&bp->list_entry);
 651                 kfree(bp);
 652         }
 653
 654         /* the itnim_mapped_list must be empty at this time */
 655         bfa_assert(list_empty(&im_port->itnim_mapped_list));
 656
 657         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 658 }
 659
 660 void
 661 bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port)
 662 {
 663 }
 664
 665 void
 666 bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port)
 667 {
 668 }
 669
 670 bfa_status_t
 671 bfad_im_probe(struct bfad_s *bfad)
 672 {
 673         struct bfad_im_s      *im;
 674         bfa_status_t    rc = BFA_STATUS_OK;
 675
 676         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 677         if (im == NULL) {
 678                 rc = BFA_STATUS_ENOMEM;
 679                 goto ext;
 680         }
 681
 682         bfad->im = im;
 683         im->bfad = bfad;
 684
 685         if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) {
 686                 kfree(im);
 687                 rc = BFA_STATUS_FAILED;
 688         }
 689
 690 ext:
 691         return rc;
 692 }
 693
 694 void
 695 bfad_im_probe_undo(struct bfad_s *bfad)
 696 {
 697         if (bfad->im) {
 698                 bfad_os_destroy_workq(bfad->im);
 699                 kfree(bfad->im);
 700                 bfad->im = NULL;
 701         }
 702 }
 703
 704 struct Scsi_Host *
 705 bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 706 {
 707         struct scsi_host_template *sht;
 708
 709         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 710                 sht = &bfad_im_scsi_host_template;
 711         else
 712                 sht = &bfad_im_vport_template;
 713
 714         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 715
 716         return scsi_host_alloc(sht, sizeof(unsigned long));
 717 }
 718
 719 void
 720 bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 721 {
 722         if (!(im_port->flags & BFAD_PORT_DELETE))
 723                 flush_workqueue(bfad->im->drv_workq);
 724         bfad_im_scsi_host_free(im_port->bfad, im_port);
 725         bfad_im_port_clean(im_port);
 726         kfree(im_port);
 727 }
 728
 729 void
 730 bfad_os_destroy_workq(struct bfad_im_s *im)
 731 {
 732         if (im && im->drv_workq) {
 733                 destroy_workqueue(im->drv_workq);
 734                 im->drv_workq = NULL;
 735         }
 736 }
 737
 738 bfa_status_t
 739 bfad_os_thread_workq(struct bfad_s *bfad)
 740 {
 741         struct bfad_im_s      *im = bfad->im;
 742
 743         bfa_trc(bfad, 0);
 744         snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d",
 745                  bfad->inst_no);
 746         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 747         if (!im->drv_workq)
 748                 return BFA_STATUS_FAILED;
 749
 750         return BFA_STATUS_OK;
 751 }
 752
 753 /**
 754  * Scsi_Host template entry.
 755  *
 756  * Description:
 757  * OS entry point to adjust the queue_depths on a per-device basis.
 758  * Called once per device during the bus scan.
 759  * Return non-zero if fails.
 760  */
 761 static int
 762 bfad_im_slave_configure(struct scsi_device *sdev)
 763 {
 764         if (sdev->tagged_supported)
 765                 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
 766         else
 767                 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
 768
 769         return 0;
 770 }
 771
 772 struct scsi_host_template bfad_im_scsi_host_template = {
 773         .module = THIS_MODULE,
 774         .name = BFAD_DRIVER_NAME,
 775         .info = bfad_im_info,
 776         .queuecommand = bfad_im_queuecommand,
 777         .eh_abort_handler = bfad_im_abort_handler,
 778         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 779         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 780
 781         .slave_alloc = bfad_im_slave_alloc,
 782         .slave_configure = bfad_im_slave_configure,
 783         .slave_destroy = bfad_im_slave_destroy,
 784
 785         .this_id = -1,
 786         .sg_tablesize = BFAD_IO_MAX_SGE,
 787         .cmd_per_lun = 3,
 788         .use_clustering = ENABLE_CLUSTERING,
 789         .shost_attrs = bfad_im_host_attrs,
 790         .max_sectors = 0xFFFF,
 791 };
 792
 793 struct scsi_host_template bfad_im_vport_template = {
 794         .module = THIS_MODULE,
 795         .name = BFAD_DRIVER_NAME,
 796         .info = bfad_im_info,
 797         .queuecommand = bfad_im_queuecommand,
 798         .eh_abort_handler = bfad_im_abort_handler,
 799         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 800         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 801
 802         .slave_alloc = bfad_im_slave_alloc,
 803         .slave_configure = bfad_im_slave_configure,
 804         .slave_destroy = bfad_im_slave_destroy,
 805
 806         .this_id = -1,
 807         .sg_tablesize = BFAD_IO_MAX_SGE,
 808         .cmd_per_lun = 3,
 809         .use_clustering = ENABLE_CLUSTERING,
 810         .shost_attrs = bfad_im_vport_attrs,
 811         .max_sectors = 0xFFFF,
 812 };
 813
 814 void
 815 bfad_im_probe_post(struct bfad_im_s *im)
 816 {
 817         flush_workqueue(im->drv_workq);
 818 }
 819
 820 bfa_status_t
 821 bfad_im_module_init(void)
 822 {
 823         bfad_im_scsi_transport_template =
 824                 fc_attach_transport(&bfad_im_fc_function_template);
 825         if (!bfad_im_scsi_transport_template)
 826                 return BFA_STATUS_ENOMEM;
 827
 828         bfad_im_scsi_vport_transport_template =
 829                 fc_attach_transport(&bfad_im_vport_fc_function_template);
 830         if (!bfad_im_scsi_vport_transport_template) {
 831                 fc_release_transport(bfad_im_scsi_transport_template);
 832                 return BFA_STATUS_ENOMEM;
 833         }
 834
 835         return BFA_STATUS_OK;
 836 }
 837
 838 void
 839 bfad_im_module_exit(void)
 840 {
 841         if (bfad_im_scsi_transport_template)
 842                 fc_release_transport(bfad_im_scsi_transport_template);
 843         if (bfad_im_scsi_vport_transport_template)
 844                 fc_release_transport(bfad_im_scsi_vport_transport_template);
 845 }
 846
 847 void
 848 bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv)
 849 {
 850         struct bfad_im_s      *im = itnim_drv->im;
 851
 852         if (itnim_drv->queue_work)
 853                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 854 }
 855
 856 void
 857 bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 858 {
 859         struct scsi_device *tmp_sdev;
 860
 861         if (((jiffies - itnim->last_ramp_up_time) >
 862                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 863                 ((jiffies - itnim->last_queue_full_time) >
 864                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 865                 shost_for_each_device(tmp_sdev, sdev->host) {
 866                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 867                                 if (tmp_sdev->id != sdev->id)
 868                                         continue;
 869                                 if (tmp_sdev->ordered_tags)
 870                                         scsi_adjust_queue_depth(tmp_sdev,
 871                                                 MSG_ORDERED_TAG,
 872                                                 tmp_sdev->queue_depth + 1);
 873                                 else
 874                                         scsi_adjust_queue_depth(tmp_sdev,
 875                                                 MSG_SIMPLE_TAG,
 876                                                 tmp_sdev->queue_depth + 1);
 877
 878                                 itnim->last_ramp_up_time = jiffies;
 879                         }
 880                 }
 881         }
 882 }
 883
 884 void
 885 bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 886 {
 887         struct scsi_device *tmp_sdev;
 888
 889         itnim->last_queue_full_time = jiffies;
 890
 891         shost_for_each_device(tmp_sdev, sdev->host) {
 892                 if (tmp_sdev->id != sdev->id)
 893                         continue;
 894                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 895         }
 896 }
 897
 898
 899
 900
 901 struct bfad_itnim_s *
 902 bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id)
 903 {
 904         struct bfad_itnim_s   *itnim = NULL;
 905
 906         /* Search the mapped list for this target ID */
 907         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 908                 if (id == itnim->scsi_tgt_id)
 909                         return itnim;
 910         }
 911
 912         return NULL;
 913 }
 914
 915 /**
 916  * Scsi_Host template entry slave_alloc
 917  */
 918 static int
 919 bfad_im_slave_alloc(struct scsi_device *sdev)
 920 {
 921         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 922
 923         if (!rport || fc_remote_port_chkready(rport))
 924                 return -ENXIO;
 925
 926         sdev->hostdata = rport->dd_data;
 927
 928         return 0;
 929 }
 930
 931 void
 932 bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
 933 {
 934         struct Scsi_Host *host = im_port->shost;
 935         struct bfad_s         *bfad = im_port->bfad;
 936         struct bfad_port_s    *port = im_port->port;
 937         struct bfa_pport_attr_s pattr;
 938         char model[BFA_ADAPTER_MODEL_NAME_LEN];
 939         char fw_ver[BFA_VERSION_LEN];
 940
 941         fc_host_node_name(host) =
 942                 bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port)));
 943         fc_host_port_name(host) =
 944                 bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port)));
 945         fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
 946
 947         fc_host_supported_classes(host) = FC_COS_CLASS3;
 948
 949         memset(fc_host_supported_fc4s(host), 0,
 950                sizeof(fc_host_supported_fc4s(host)));
 951         if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
 952                 /* For FCP type 0x08 */
 953                 fc_host_supported_fc4s(host)[2] = 1;
 954         if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
 955                 /* For LLC/SNAP type 0x05 */
 956                 fc_host_supported_fc4s(host)[3] = 0x20;
 957         /* For fibre channel services type 0x20 */
 958         fc_host_supported_fc4s(host)[7] = 1;
 959
 960         bfa_get_adapter_model(&bfad->bfa, model);
 961         bfa_get_adapter_fw_ver(&bfad->bfa, fw_ver);
 962         sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
 963                 model, fw_ver, BFAD_DRIVER_VERSION);
 964
 965         fc_host_supported_speeds(host) = 0;
 966         fc_host_supported_speeds(host) |=
 967                 FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
 968                 FC_PORTSPEED_1GBIT;
 969
 970         bfa_fcport_get_attr(&bfad->bfa, &pattr);
 971         fc_host_maxframe_size(host) = pattr.pport_cfg.maxfrsize;
 972 }
 973
 974 static void
 975 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
 976 {
 977         struct fc_rport_identifiers rport_ids;
 978         struct fc_rport *fc_rport;
 979         struct bfad_itnim_data_s *itnim_data;
 980
 981         rport_ids.node_name =
 982                 bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
 983         rport_ids.port_name =
 984                 bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
 985         rport_ids.port_id =
 986                 bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
 987         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
 988
 989         itnim->fc_rport = fc_rport =
 990                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
 991
 992         if (!fc_rport)
 993                 return;
 994
 995         fc_rport->maxframe_size =
 996                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
 997         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
 998
 999         itnim_data = fc_rport->dd_data;
1000         itnim_data->itnim = itnim;
1001
1002         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1003
1004         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1005                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1006
1007         if ((fc_rport->scsi_target_id != -1)
1008             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1009                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1010
1011         return;
1012 }
1013
1014 /**
1015  * Work queue handler using FC transport service
1016 * Context: kernel
1017  */
1018 static void
1019 bfad_im_itnim_work_handler(struct work_struct *work)
1020 {
1021         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1022                                                         itnim_work);
1023         struct bfad_im_s      *im = itnim->im;
1024         struct bfad_s         *bfad = im->bfad;
1025         struct bfad_im_port_s *im_port;
1026         unsigned long   flags;
1027         struct fc_rport *fc_rport;
1028         wwn_t wwpn;
1029         u32 fcid;
1030         char wwpn_str[32], fcid_str[16];
1031
1032         spin_lock_irqsave(&bfad->bfad_lock, flags);
1033         im_port = itnim->im_port;
1034         bfa_trc(bfad, itnim->state);
1035         switch (itnim->state) {
1036         case ITNIM_STATE_ONLINE:
1037                 if (!itnim->fc_rport) {
1038                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1039                         bfad_im_fc_rport_add(im_port, itnim);
1040                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1041                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1042                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1043                         wwn2str(wwpn_str, wwpn);
1044                         fcid2str(fcid_str, fcid);
1045                         list_add_tail(&itnim->list_entry,
1046                                 &im_port->itnim_mapped_list);
1047                         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE,
1048                                 im_port->shost->host_no,
1049                                 itnim->scsi_tgt_id,
1050                                 fcid_str, wwpn_str);
1051                 } else {
1052                         printk(KERN_WARNING
1053                                 "%s: itnim %llx is already in online state\n",
1054                                 __func__,
1055                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1056                 }
1057
1058                 break;
1059         case ITNIM_STATE_OFFLINE_PENDING:
1060                 itnim->state = ITNIM_STATE_OFFLINE;
1061                 if (itnim->fc_rport) {
1062                         fc_rport = itnim->fc_rport;
1063                         ((struct bfad_itnim_data_s *)
1064                                 fc_rport->dd_data)->itnim = NULL;
1065                         itnim->fc_rport = NULL;
1066                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1067                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1068                                 fc_rport->dev_loss_tmo =
1069                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1070                                 fc_remote_port_delete(fc_rport);
1071                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1072                         }
1073                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1074                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1075                         wwn2str(wwpn_str, wwpn);
1076                         fcid2str(fcid_str, fcid);
1077                         list_del(&itnim->list_entry);
1078                         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE,
1079                                 im_port->shost->host_no,
1080                                 itnim->scsi_tgt_id,
1081                                 fcid_str, wwpn_str);
1082                 }
1083                 break;
1084         case ITNIM_STATE_FREE:
1085                 if (itnim->fc_rport) {
1086                         fc_rport = itnim->fc_rport;
1087                         ((struct bfad_itnim_data_s *)
1088                                 fc_rport->dd_data)->itnim = NULL;
1089                         itnim->fc_rport = NULL;
1090                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1091                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1092                                 fc_rport->dev_loss_tmo =
1093                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1094                                 fc_remote_port_delete(fc_rport);
1095                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1096                         }
1097                         list_del(&itnim->list_entry);
1098                 }
1099
1100                 kfree(itnim);
1101                 break;
1102         default:
1103                 bfa_assert(0);
1104                 break;
1105         }
1106
1107         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1108 }
1109
1110 /**
1111  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1112  */
1113 static int
1114 bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1115 {
1116         struct bfad_im_port_s *im_port =
1117                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1118         struct bfad_s         *bfad = im_port->bfad;
1119         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1120         struct bfad_itnim_s   *itnim;
1121         struct bfa_ioim_s *hal_io;
1122         unsigned long   flags;
1123         int             rc;
1124         s16        sg_cnt = 0;
1125         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1126
1127         rc = fc_remote_port_chkready(rport);
1128         if (rc) {
1129                 cmnd->result = rc;
1130                 done(cmnd);
1131                 return 0;
1132         }
1133
1134         sg_cnt = scsi_dma_map(cmnd);
1135
1136         if (sg_cnt < 0)
1137                 return SCSI_MLQUEUE_HOST_BUSY;
1138
1139         cmnd->scsi_done = done;
1140
1141         spin_lock_irqsave(&bfad->bfad_lock, flags);
1142         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1143                 printk(KERN_WARNING
1144                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1145                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1146                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1147                 goto out_fail_cmd;
1148         }
1149
1150         itnim = itnim_data->itnim;
1151         if (!itnim) {
1152                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1153                 goto out_fail_cmd;
1154         }
1155
1156         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1157                                     itnim->bfa_itnim, sg_cnt);
1158         if (!hal_io) {
1159                 printk(KERN_WARNING "hal_io failure\n");
1160                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1161                 scsi_dma_unmap(cmnd);
1162                 return SCSI_MLQUEUE_HOST_BUSY;
1163         }
1164
1165         cmnd->host_scribble = (char *)hal_io;
1166         bfa_trc_fp(bfad, hal_io->iotag);
1167         bfa_ioim_start(hal_io);
1168         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1169
1170         return 0;
1171
1172 out_fail_cmd:
1173         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1174         scsi_dma_unmap(cmnd);
1175         if (done)
1176                 done(cmnd);
1177
1178         return 0;
1179 }
1180
1181 void
1182 bfad_os_rport_online_wait(struct bfad_s *bfad)
1183 {
1184         int i;
1185         int rport_delay = 10;
1186
1187         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1188                  && i < bfa_linkup_delay; i++)
1189                 schedule_timeout_uninterruptible(HZ);
1190
1191         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1192                 rport_delay = rport_delay < bfa_linkup_delay ?
1193                                  rport_delay : bfa_linkup_delay;
1194                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1195                          && i < rport_delay; i++)
1196                         schedule_timeout_uninterruptible(HZ);
1197
1198                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE))
1199                         schedule_timeout_uninterruptible(rport_delay * HZ);
1200         }
1201 }
1202
1203 int
1204 bfad_os_get_linkup_delay(struct bfad_s *bfad)
1205 {
1206
1207         u8         nwwns = 0;
1208         wwn_t           *wwns;
1209         int             ldelay;
1210
1211         /*
1212          * Querying for the boot target port wwns
1213          * -- read from boot information in flash.
1214          * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30
1215          * else => local boot machine set bfa_linkup_delay = 10
1216          */
1217
1218         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns);
1219
1220         if (nwwns > 0) {
1221                 /* If boot over SAN; linkup_delay = 30sec */
1222                 ldelay = 30;
1223         } else {
1224                 /* If local boot; linkup_delay = 10sec */
1225                 ldelay = 0;
1226         }
1227
1228         return ldelay;
1229 }
1230
1231