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 static void bfad_im_itnim_work_handler(struct work_struct *work);
  34 static int bfad_im_queuecommand(struct scsi_cmnd *cmnd,
  35                 void (*done)(struct scsi_cmnd *));
  36 static int bfad_im_slave_alloc(struct scsi_device *sdev);
  37
  38 void
  39 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
  40                         enum bfi_ioim_status io_status, u8 scsi_status,
  41                         int sns_len, u8 *sns_info, s32 residue)
  42 {
  43         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
  44         struct bfad_s         *bfad = drv;
  45         struct bfad_itnim_data_s *itnim_data;
  46         struct bfad_itnim_s *itnim;
  47         u8         host_status = DID_OK;
  48
  49         switch (io_status) {
  50         case BFI_IOIM_STS_OK:
  51                 bfa_trc(bfad, scsi_status);
  52                 scsi_set_resid(cmnd, 0);
  53
  54                 if (sns_len > 0) {
  55                         bfa_trc(bfad, sns_len);
  56                         if (sns_len > SCSI_SENSE_BUFFERSIZE)
  57                                 sns_len = SCSI_SENSE_BUFFERSIZE;
  58                         memcpy(cmnd->sense_buffer, sns_info, sns_len);
  59                 }
  60                 if (residue > 0) {
  61                         bfa_trc(bfad, residue);
  62                         scsi_set_resid(cmnd, residue);
  63                         if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
  64                                 (scsi_bufflen(cmnd) - residue) <
  65                                         cmnd->underflow) {
  66                                 bfa_trc(bfad, 0);
  67                                 host_status = DID_ERROR;
  68                         }
  69                 }
  70                 cmnd->result = ScsiResult(host_status, scsi_status);
  71
  72                 break;
  73
  74         case BFI_IOIM_STS_ABORTED:
  75         case BFI_IOIM_STS_TIMEDOUT:
  76         case BFI_IOIM_STS_PATHTOV:
  77         default:
  78                 cmnd->result = ScsiResult(DID_ERROR, 0);
  79         }
  80
  81         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
  82         if (cmnd->device->host != NULL)
  83                 scsi_dma_unmap(cmnd);
  84
  85         cmnd->host_scribble = NULL;
  86         bfa_trc(bfad, cmnd->result);
  87
  88         itnim_data = cmnd->device->hostdata;
  89         if (itnim_data) {
  90                 itnim = itnim_data->itnim;
  91                 if (!cmnd->result && itnim &&
  92                          (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
  93                         /* Queue depth adjustment for good status completion */
  94                         bfad_os_ramp_up_qdepth(itnim, cmnd->device);
  95                 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
  96                         /* qfull handling */
  97                         bfad_os_handle_qfull(itnim, cmnd->device);
  98                 }
  99         }
 100
 101         cmnd->scsi_done(cmnd);
 102 }
 103
 104 void
 105 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
 106 {
 107         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 108         struct bfad_itnim_data_s *itnim_data;
 109         struct bfad_itnim_s *itnim;
 110
 111         cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
 112
 113         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 114         if (cmnd->device->host != NULL)
 115                 scsi_dma_unmap(cmnd);
 116
 117         cmnd->host_scribble = NULL;
 118
 119         /* Queue depth adjustment */
 120         if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
 121                 itnim_data = cmnd->device->hostdata;
 122                 if (itnim_data) {
 123                         itnim = itnim_data->itnim;
 124                         if (itnim)
 125                                 bfad_os_ramp_up_qdepth(itnim, cmnd->device);
 126                 }
 127         }
 128
 129         cmnd->scsi_done(cmnd);
 130 }
 131
 132 void
 133 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
 134 {
 135         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 136         struct bfad_s         *bfad = drv;
 137
 138         cmnd->result = ScsiResult(DID_ERROR, 0);
 139
 140         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 141         if (cmnd->device->host != NULL)
 142                 scsi_dma_unmap(cmnd);
 143
 144         bfa_trc(bfad, cmnd->result);
 145         cmnd->host_scribble = NULL;
 146 }
 147
 148 void
 149 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
 150                    enum bfi_tskim_status tsk_status)
 151 {
 152         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
 153         wait_queue_head_t *wq;
 154
 155         cmnd->SCp.Status |= tsk_status << 1;
 156         set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
 157         wq = (wait_queue_head_t *) cmnd->SCp.ptr;
 158         cmnd->SCp.ptr = NULL;
 159
 160         if (wq)
 161                 wake_up(wq);
 162 }
 163
 164 void
 165 bfa_cb_ioim_resfree(void *drv)
 166 {
 167 }
 168
 169 /**
 170  *  Scsi_Host_template SCSI host template
 171  */
 172 /**
 173  * Scsi_Host template entry, returns BFAD PCI info.
 174  */
 175 static const char *
 176 bfad_im_info(struct Scsi_Host *shost)
 177 {
 178         static char     bfa_buf[256];
 179         struct bfad_im_port_s *im_port =
 180                         (struct bfad_im_port_s *) shost->hostdata[0];
 181         struct bfad_s         *bfad = im_port->bfad;
 182         char model[BFA_ADAPTER_MODEL_NAME_LEN];
 183
 184         bfa_get_adapter_model(&bfad->bfa, model);
 185
 186         memset(bfa_buf, 0, sizeof(bfa_buf));
 187         snprintf(bfa_buf, sizeof(bfa_buf),
 188                 "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
 189                 model, bfad->pci_name, BFAD_DRIVER_VERSION);
 190         return bfa_buf;
 191 }
 192
 193 /**
 194  * Scsi_Host template entry, aborts the specified SCSI command.
 195  *
 196  * Returns: SUCCESS or FAILED.
 197  */
 198 static int
 199 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
 200 {
 201         struct Scsi_Host *shost = cmnd->device->host;
 202         struct bfad_im_port_s *im_port =
 203                         (struct bfad_im_port_s *) shost->hostdata[0];
 204         struct bfad_s         *bfad = im_port->bfad;
 205         struct bfa_ioim_s *hal_io;
 206         unsigned long   flags;
 207         u32        timeout;
 208         int             rc = FAILED;
 209
 210         spin_lock_irqsave(&bfad->bfad_lock, flags);
 211         hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 212         if (!hal_io) {
 213                 /* IO has been completed, retrun success */
 214                 rc = SUCCESS;
 215                 goto out;
 216         }
 217         if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
 218                 rc = FAILED;
 219                 goto out;
 220         }
 221
 222         bfa_trc(bfad, hal_io->iotag);
 223         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT,
 224                 im_port->shost->host_no, cmnd, hal_io->iotag);
 225         bfa_ioim_abort(hal_io);
 226         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 227
 228         /* Need to wait until the command get aborted */
 229         timeout = 10;
 230         while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
 231                 set_current_state(TASK_UNINTERRUPTIBLE);
 232                 schedule_timeout(timeout);
 233                 if (timeout < 4 * HZ)
 234                         timeout *= 2;
 235         }
 236
 237         cmnd->scsi_done(cmnd);
 238         bfa_trc(bfad, hal_io->iotag);
 239         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP,
 240                 im_port->shost->host_no, cmnd, hal_io->iotag);
 241         return SUCCESS;
 242 out:
 243         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 244         return rc;
 245 }
 246
 247 static bfa_status_t
 248 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
 249                      struct bfad_itnim_s *itnim)
 250 {
 251         struct bfa_tskim_s *tskim;
 252         struct bfa_itnim_s *bfa_itnim;
 253         bfa_status_t    rc = BFA_STATUS_OK;
 254
 255         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 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 {
 518         int error = 1;
 519
 520         if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
 521                 printk(KERN_WARNING "idr_pre_get failure\n");
 522                 goto out;
 523         }
 524
 525         error = idr_get_new(&bfad_im_port_index, im_port,
 526                                          &im_port->idr_id);
 527         if (error) {
 528                 printk(KERN_WARNING "idr_get_new failure\n");
 529                 goto out;
 530         }
 531
 532         im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad);
 533         if (!im_port->shost) {
 534                 error = 1;
 535                 goto out_free_idr;
 536         }
 537
 538         im_port->shost->hostdata[0] = (unsigned long)im_port;
 539         im_port->shost->unique_id = im_port->idr_id;
 540         im_port->shost->this_id = -1;
 541         im_port->shost->max_id = MAX_FCP_TARGET;
 542         im_port->shost->max_lun = MAX_FCP_LUN;
 543         im_port->shost->max_cmd_len = 16;
 544         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 545         im_port->shost->transportt = bfad_im_scsi_transport_template;
 546
 547         error = bfad_os_scsi_add_host(im_port->shost, im_port, bfad);
 548         if (error) {
 549                 printk(KERN_WARNING "bfad_os_scsi_add_host failure %d\n",
 550                                                         error);
 551                 goto out_fc_rel;
 552         }
 553
 554         /* setup host fixed attribute if the lk supports */
 555         bfad_os_fc_host_init(im_port);
 556
 557         return 0;
 558
 559 out_fc_rel:
 560         scsi_host_put(im_port->shost);
 561 out_free_idr:
 562         idr_remove(&bfad_im_port_index, im_port->idr_id);
 563 out:
 564         return error;
 565 }
 566
 567 void
 568 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 569 {
 570         unsigned long flags;
 571
 572         bfa_trc(bfad, bfad->inst_no);
 573         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE,
 574                         im_port->shost->host_no);
 575
 576         fc_remove_host(im_port->shost);
 577
 578         scsi_remove_host(im_port->shost);
 579         scsi_host_put(im_port->shost);
 580
 581         spin_lock_irqsave(&bfad->bfad_lock, flags);
 582         idr_remove(&bfad_im_port_index, im_port->idr_id);
 583         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 584 }
 585
 586 static void
 587 bfad_im_port_delete_handler(struct work_struct *work)
 588 {
 589         struct bfad_im_port_s *im_port =
 590                 container_of(work, struct bfad_im_port_s, port_delete_work);
 591
 592         bfad_im_scsi_host_free(im_port->bfad, im_port);
 593         bfad_im_port_clean(im_port);
 594         kfree(im_port);
 595 }
 596
 597 bfa_status_t
 598 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 599 {
 600         int             rc = BFA_STATUS_OK;
 601         struct bfad_im_port_s *im_port;
 602
 603         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 604         if (im_port == NULL) {
 605                 rc = BFA_STATUS_ENOMEM;
 606                 goto ext;
 607         }
 608         port->im_port = im_port;
 609         im_port->port = port;
 610         im_port->bfad = bfad;
 611
 612         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 613         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 614         INIT_LIST_HEAD(&im_port->binding_list);
 615
 616 ext:
 617         return rc;
 618 }
 619
 620 void
 621 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 622 {
 623         struct bfad_im_port_s *im_port = port->im_port;
 624
 625         queue_work(bfad->im->drv_workq,
 626                                 &im_port->port_delete_work);
 627 }
 628
 629 void
 630 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 631 {
 632         struct bfad_fcp_binding *bp, *bp_new;
 633         unsigned long flags;
 634         struct bfad_s *bfad =  im_port->bfad;
 635
 636         spin_lock_irqsave(&bfad->bfad_lock, flags);
 637         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 638                                         list_entry) {
 639                 list_del(&bp->list_entry);
 640                 kfree(bp);
 641         }
 642
 643         /* the itnim_mapped_list must be empty at this time */
 644         bfa_assert(list_empty(&im_port->itnim_mapped_list));
 645
 646         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 647 }
 648
 649 void
 650 bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port)
 651 {
 652 }
 653
 654 void
 655 bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port)
 656 {
 657 }
 658
 659 bfa_status_t
 660 bfad_im_probe(struct bfad_s *bfad)
 661 {
 662         struct bfad_im_s      *im;
 663         bfa_status_t    rc = BFA_STATUS_OK;
 664
 665         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 666         if (im == NULL) {
 667                 rc = BFA_STATUS_ENOMEM;
 668                 goto ext;
 669         }
 670
 671         bfad->im = im;
 672         im->bfad = bfad;
 673
 674         if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) {
 675                 kfree(im);
 676                 rc = BFA_STATUS_FAILED;
 677         }
 678
 679 ext:
 680         return rc;
 681 }
 682
 683 void
 684 bfad_im_probe_undo(struct bfad_s *bfad)
 685 {
 686         if (bfad->im) {
 687                 bfad_os_destroy_workq(bfad->im);
 688                 kfree(bfad->im);
 689                 bfad->im = NULL;
 690         }
 691 }
 692
 693
 694
 695
 696 int
 697 bfad_os_scsi_add_host(struct Scsi_Host *shost, struct bfad_im_port_s *im_port,
 698                         struct bfad_s *bfad)
 699 {
 700     struct device *dev;
 701
 702     if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 703                 dev = &bfad->pcidev->dev;
 704     else
 705                 dev = &bfad->pport.im_port->shost->shost_gendev;
 706
 707     return scsi_add_host(shost, dev);
 708 }
 709
 710 struct Scsi_Host *
 711 bfad_os_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         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 721
 722         return scsi_host_alloc(sht, sizeof(unsigned long));
 723 }
 724
 725 void
 726 bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 727 {
 728         flush_workqueue(bfad->im->drv_workq);
 729         bfad_im_scsi_host_free(im_port->bfad, im_port);
 730         bfad_im_port_clean(im_port);
 731         kfree(im_port);
 732 }
 733
 734 void
 735 bfad_os_destroy_workq(struct bfad_im_s *im)
 736 {
 737         if (im && im->drv_workq) {
 738                 destroy_workqueue(im->drv_workq);
 739                 im->drv_workq = NULL;
 740         }
 741 }
 742
 743 bfa_status_t
 744 bfad_os_thread_workq(struct bfad_s *bfad)
 745 {
 746         struct bfad_im_s      *im = bfad->im;
 747
 748         bfa_trc(bfad, 0);
 749         snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d",
 750                  bfad->inst_no);
 751         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 752         if (!im->drv_workq)
 753                 return BFA_STATUS_FAILED;
 754
 755         return BFA_STATUS_OK;
 756 }
 757
 758 /**
 759  * Scsi_Host template entry.
 760  *
 761  * Description:
 762  * OS entry point to adjust the queue_depths on a per-device basis.
 763  * Called once per device during the bus scan.
 764  * Return non-zero if fails.
 765  */
 766 static int
 767 bfad_im_slave_configure(struct scsi_device *sdev)
 768 {
 769         if (sdev->tagged_supported)
 770                 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
 771         else
 772                 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
 773
 774         return 0;
 775 }
 776
 777 struct scsi_host_template bfad_im_scsi_host_template = {
 778         .module = THIS_MODULE,
 779         .name = BFAD_DRIVER_NAME,
 780         .info = bfad_im_info,
 781         .queuecommand = bfad_im_queuecommand,
 782         .eh_abort_handler = bfad_im_abort_handler,
 783         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 784         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 785
 786         .slave_alloc = bfad_im_slave_alloc,
 787         .slave_configure = bfad_im_slave_configure,
 788         .slave_destroy = bfad_im_slave_destroy,
 789
 790         .this_id = -1,
 791         .sg_tablesize = BFAD_IO_MAX_SGE,
 792         .cmd_per_lun = 3,
 793         .use_clustering = ENABLE_CLUSTERING,
 794         .shost_attrs = bfad_im_host_attrs,
 795         .max_sectors = 0xFFFF,
 796 };
 797
 798 struct scsi_host_template bfad_im_vport_template = {
 799         .module = THIS_MODULE,
 800         .name = BFAD_DRIVER_NAME,
 801         .info = bfad_im_info,
 802         .queuecommand = bfad_im_queuecommand,
 803         .eh_abort_handler = bfad_im_abort_handler,
 804         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 805         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 806
 807         .slave_alloc = bfad_im_slave_alloc,
 808         .slave_configure = bfad_im_slave_configure,
 809         .slave_destroy = bfad_im_slave_destroy,
 810
 811         .this_id = -1,
 812         .sg_tablesize = BFAD_IO_MAX_SGE,
 813         .cmd_per_lun = 3,
 814         .use_clustering = ENABLE_CLUSTERING,
 815         .shost_attrs = bfad_im_vport_attrs,
 816         .max_sectors = 0xFFFF,
 817 };
 818
 819 void
 820 bfad_im_probe_post(struct bfad_im_s *im)
 821 {
 822         flush_workqueue(im->drv_workq);
 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         return BFA_STATUS_OK;
 834 }
 835
 836 void
 837 bfad_im_module_exit(void)
 838 {
 839         if (bfad_im_scsi_transport_template)
 840                 fc_release_transport(bfad_im_scsi_transport_template);
 841 }
 842
 843 void
 844 bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv)
 845 {
 846         struct bfad_im_s      *im = itnim_drv->im;
 847
 848         if (itnim_drv->queue_work)
 849                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 850 }
 851
 852 void
 853 bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 854 {
 855         struct scsi_device *tmp_sdev;
 856
 857         if (((jiffies - itnim->last_ramp_up_time) >
 858                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 859                 ((jiffies - itnim->last_queue_full_time) >
 860                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 861                 shost_for_each_device(tmp_sdev, sdev->host) {
 862                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 863                                 if (tmp_sdev->id != sdev->id)
 864                                         continue;
 865                                 if (tmp_sdev->ordered_tags)
 866                                         scsi_adjust_queue_depth(tmp_sdev,
 867                                                 MSG_ORDERED_TAG,
 868                                                 tmp_sdev->queue_depth + 1);
 869                                 else
 870                                         scsi_adjust_queue_depth(tmp_sdev,
 871                                                 MSG_SIMPLE_TAG,
 872                                                 tmp_sdev->queue_depth + 1);
 873
 874                                 itnim->last_ramp_up_time = jiffies;
 875                         }
 876                 }
 877         }
 878 }
 879
 880 void
 881 bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 882 {
 883         struct scsi_device *tmp_sdev;
 884
 885         itnim->last_queue_full_time = jiffies;
 886
 887         shost_for_each_device(tmp_sdev, sdev->host) {
 888                 if (tmp_sdev->id != sdev->id)
 889                         continue;
 890                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 891         }
 892 }
 893
 894
 895
 896
 897 struct bfad_itnim_s *
 898 bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id)
 899 {
 900         struct bfad_itnim_s   *itnim = NULL;
 901
 902         /* Search the mapped list for this target ID */
 903         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 904                 if (id == itnim->scsi_tgt_id)
 905                         return itnim;
 906         }
 907
 908         return NULL;
 909 }
 910
 911 /**
 912  * Scsi_Host template entry slave_alloc
 913  */
 914 static int
 915 bfad_im_slave_alloc(struct scsi_device *sdev)
 916 {
 917         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 918
 919         if (!rport || fc_remote_port_chkready(rport))
 920                 return -ENXIO;
 921
 922         sdev->hostdata = rport->dd_data;
 923
 924         return 0;
 925 }
 926
 927 void
 928 bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
 929 {
 930         struct Scsi_Host *host = im_port->shost;
 931         struct bfad_s         *bfad = im_port->bfad;
 932         struct bfad_port_s    *port = im_port->port;
 933         struct bfa_pport_attr_s pattr;
 934         char model[BFA_ADAPTER_MODEL_NAME_LEN];
 935         char fw_ver[BFA_VERSION_LEN];
 936
 937         fc_host_node_name(host) =
 938                 bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port)));
 939         fc_host_port_name(host) =
 940                 bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port)));
 941
 942         fc_host_supported_classes(host) = FC_COS_CLASS3;
 943
 944         memset(fc_host_supported_fc4s(host), 0,
 945                sizeof(fc_host_supported_fc4s(host)));
 946         if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
 947                 /* For FCP type 0x08 */
 948                 fc_host_supported_fc4s(host)[2] = 1;
 949         if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
 950                 /* For LLC/SNAP type 0x05 */
 951                 fc_host_supported_fc4s(host)[3] = 0x20;
 952         /* For fibre channel services type 0x20 */
 953         fc_host_supported_fc4s(host)[7] = 1;
 954
 955         bfa_get_adapter_model(&bfad->bfa, model);
 956         bfa_get_adapter_fw_ver(&bfad->bfa, fw_ver);
 957         sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
 958                 model, fw_ver, BFAD_DRIVER_VERSION);
 959
 960         fc_host_supported_speeds(host) = 0;
 961         fc_host_supported_speeds(host) |=
 962                 FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
 963                 FC_PORTSPEED_1GBIT;
 964
 965         bfa_fcport_get_attr(&bfad->bfa, &pattr);
 966         fc_host_maxframe_size(host) = pattr.pport_cfg.maxfrsize;
 967 }
 968
 969 static void
 970 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
 971 {
 972         struct fc_rport_identifiers rport_ids;
 973         struct fc_rport *fc_rport;
 974         struct bfad_itnim_data_s *itnim_data;
 975
 976         rport_ids.node_name =
 977                 bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
 978         rport_ids.port_name =
 979                 bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
 980         rport_ids.port_id =
 981                 bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
 982         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
 983
 984         itnim->fc_rport = fc_rport =
 985                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
 986
 987         if (!fc_rport)
 988                 return;
 989
 990         fc_rport->maxframe_size =
 991                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
 992         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
 993
 994         itnim_data = fc_rport->dd_data;
 995         itnim_data->itnim = itnim;
 996
 997         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
 998
 999         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1000                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1001
1002         if ((fc_rport->scsi_target_id != -1)
1003             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1004                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1005
1006         return;
1007 }
1008
1009 /**
1010  * Work queue handler using FC transport service
1011 * Context: kernel
1012  */
1013 static void
1014 bfad_im_itnim_work_handler(struct work_struct *work)
1015 {
1016         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1017                                                         itnim_work);
1018         struct bfad_im_s      *im = itnim->im;
1019         struct bfad_s         *bfad = im->bfad;
1020         struct bfad_im_port_s *im_port;
1021         unsigned long   flags;
1022         struct fc_rport *fc_rport;
1023         wwn_t wwpn;
1024         u32 fcid;
1025         char wwpn_str[32], fcid_str[16];
1026
1027         spin_lock_irqsave(&bfad->bfad_lock, flags);
1028         im_port = itnim->im_port;
1029         bfa_trc(bfad, itnim->state);
1030         switch (itnim->state) {
1031         case ITNIM_STATE_ONLINE:
1032                 if (!itnim->fc_rport) {
1033                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1034                         bfad_im_fc_rport_add(im_port, itnim);
1035                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1036                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1037                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1038                         wwn2str(wwpn_str, wwpn);
1039                         fcid2str(fcid_str, fcid);
1040                         list_add_tail(&itnim->list_entry,
1041                                 &im_port->itnim_mapped_list);
1042                         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE,
1043                                 im_port->shost->host_no,
1044                                 itnim->scsi_tgt_id,
1045                                 fcid_str, wwpn_str);
1046                 } else {
1047                         printk(KERN_WARNING
1048                                 "%s: itnim %llx is already in online state\n",
1049                                 __func__,
1050                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1051                 }
1052
1053                 break;
1054         case ITNIM_STATE_OFFLINE_PENDING:
1055                 itnim->state = ITNIM_STATE_OFFLINE;
1056                 if (itnim->fc_rport) {
1057                         fc_rport = itnim->fc_rport;
1058                         ((struct bfad_itnim_data_s *)
1059                                 fc_rport->dd_data)->itnim = NULL;
1060                         itnim->fc_rport = NULL;
1061                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1062                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1063                                 fc_rport->dev_loss_tmo =
1064                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1065                                 fc_remote_port_delete(fc_rport);
1066                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1067                         }
1068                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1069                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1070                         wwn2str(wwpn_str, wwpn);
1071                         fcid2str(fcid_str, fcid);
1072                         list_del(&itnim->list_entry);
1073                         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE,
1074                                 im_port->shost->host_no,
1075                                 itnim->scsi_tgt_id,
1076                                 fcid_str, wwpn_str);
1077                 }
1078                 break;
1079         case ITNIM_STATE_FREE:
1080                 if (itnim->fc_rport) {
1081                         fc_rport = itnim->fc_rport;
1082                         ((struct bfad_itnim_data_s *)
1083                                 fc_rport->dd_data)->itnim = NULL;
1084                         itnim->fc_rport = NULL;
1085                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1086                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1087                                 fc_rport->dev_loss_tmo =
1088                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1089                                 fc_remote_port_delete(fc_rport);
1090                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1091                         }
1092                         list_del(&itnim->list_entry);
1093                 }
1094
1095                 kfree(itnim);
1096                 break;
1097         default:
1098                 bfa_assert(0);
1099                 break;
1100         }
1101
1102         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1103 }
1104
1105 /**
1106  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1107  */
1108 static int
1109 bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1110 {
1111         struct bfad_im_port_s *im_port =
1112                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1113         struct bfad_s         *bfad = im_port->bfad;
1114         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1115         struct bfad_itnim_s   *itnim;
1116         struct bfa_ioim_s *hal_io;
1117         unsigned long   flags;
1118         int             rc;
1119         s16        sg_cnt = 0;
1120         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1121
1122         rc = fc_remote_port_chkready(rport);
1123         if (rc) {
1124                 cmnd->result = rc;
1125                 done(cmnd);
1126                 return 0;
1127         }
1128
1129         sg_cnt = scsi_dma_map(cmnd);
1130
1131         if (sg_cnt < 0)
1132                 return SCSI_MLQUEUE_HOST_BUSY;
1133
1134         cmnd->scsi_done = done;
1135
1136         spin_lock_irqsave(&bfad->bfad_lock, flags);
1137         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1138                 printk(KERN_WARNING
1139                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1140                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1141                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1142                 goto out_fail_cmd;
1143         }
1144
1145         itnim = itnim_data->itnim;
1146         if (!itnim) {
1147                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1148                 goto out_fail_cmd;
1149         }
1150
1151         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1152                                     itnim->bfa_itnim, sg_cnt);
1153         if (!hal_io) {
1154                 printk(KERN_WARNING "hal_io failure\n");
1155                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1156                 scsi_dma_unmap(cmnd);
1157                 return SCSI_MLQUEUE_HOST_BUSY;
1158         }
1159
1160         cmnd->host_scribble = (char *)hal_io;
1161         bfa_trc_fp(bfad, hal_io->iotag);
1162         bfa_ioim_start(hal_io);
1163         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1164
1165         return 0;
1166
1167 out_fail_cmd:
1168         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1169         scsi_dma_unmap(cmnd);
1170         if (done)
1171                 done(cmnd);
1172
1173         return 0;
1174 }
1175
1176 void
1177 bfad_os_rport_online_wait(struct bfad_s *bfad)
1178 {
1179         int i;
1180         int rport_delay = 10;
1181
1182         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1183                  && i < bfa_linkup_delay; i++)
1184                 schedule_timeout_uninterruptible(HZ);
1185
1186         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1187                 rport_delay = rport_delay < bfa_linkup_delay ?
1188                                  rport_delay : bfa_linkup_delay;
1189                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1190                          && i < rport_delay; i++)
1191                         schedule_timeout_uninterruptible(HZ);
1192
1193                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE))
1194                         schedule_timeout_uninterruptible(rport_delay * HZ);
1195         }
1196 }
1197
1198 int
1199 bfad_os_get_linkup_delay(struct bfad_s *bfad)
1200 {
1201
1202         u8         nwwns = 0;
1203         wwn_t           *wwns;
1204         int             ldelay;
1205
1206         /*
1207          * Querying for the boot target port wwns
1208          * -- read from boot information in flash.
1209          * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30
1210          * else => local boot machine set bfa_linkup_delay = 10
1211          */
1212
1213         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns);
1214
1215         if (nwwns > 0) {
1216                 /* If boot over SAN; linkup_delay = 30sec */
1217                 ldelay = 30;
1218         } else {
1219                 /* If local boot; linkup_delay = 10sec */
1220                 ldelay = 0;
1221         }
1222
1223         return ldelay;
1224 }
1225
1226