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 "bfad_drv.h"
  23 #include "bfad_im.h"
  24 #include "bfad_trcmod.h"
  25 #include "bfa_cb_ioim_macros.h"
  26 #include <fcb/bfa_fcb_fcpim.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 static void bfad_im_itnim_work_handler(struct work_struct *work);
  33 static int bfad_im_queuecommand(struct scsi_cmnd *cmnd,
  34                 void (*done)(struct scsi_cmnd *));
  35 static int bfad_im_slave_alloc(struct scsi_device *sdev);
  36
  37 void
  38 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
  39                         enum bfi_ioim_status io_status, u8 scsi_status,
  40                         int sns_len, u8 *sns_info, s32 residue)
  41 {
  42         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
  43         struct bfad_s         *bfad = drv;
  44         struct bfad_itnim_data_s *itnim_data;
  45         struct bfad_itnim_s *itnim;
  46
  47         switch (io_status) {
  48         case BFI_IOIM_STS_OK:
  49                 bfa_trc(bfad, scsi_status);
  50                 cmnd->result = ScsiResult(DID_OK, scsi_status);
  51                 scsi_set_resid(cmnd, 0);
  52
  53                 if (sns_len > 0) {
  54                         bfa_trc(bfad, sns_len);
  55                         if (sns_len > SCSI_SENSE_BUFFERSIZE)
  56                                 sns_len = SCSI_SENSE_BUFFERSIZE;
  57                         memcpy(cmnd->sense_buffer, sns_info, sns_len);
  58                 }
  59                 if (residue > 0)
  60                         scsi_set_resid(cmnd, residue);
  61                 break;
  62
  63         case BFI_IOIM_STS_ABORTED:
  64         case BFI_IOIM_STS_TIMEDOUT:
  65         case BFI_IOIM_STS_PATHTOV:
  66         default:
  67                 cmnd->result = ScsiResult(DID_ERROR, 0);
  68         }
  69
  70         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
  71         if (cmnd->device->host != NULL)
  72                 scsi_dma_unmap(cmnd);
  73
  74         cmnd->host_scribble = NULL;
  75         bfa_trc(bfad, cmnd->result);
  76
  77         itnim_data = cmnd->device->hostdata;
  78         if (itnim_data) {
  79                 itnim = itnim_data->itnim;
  80                 if (!cmnd->result && itnim &&
  81                          (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
  82                         /* Queue depth adjustment for good status completion */
  83                         bfad_os_ramp_up_qdepth(itnim, cmnd->device);
  84                 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
  85                         /* qfull handling */
  86                         bfad_os_handle_qfull(itnim, cmnd->device);
  87                 }
  88         }
  89
  90         cmnd->scsi_done(cmnd);
  91 }
  92
  93 void
  94 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
  95 {
  96         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
  97         struct bfad_itnim_data_s *itnim_data;
  98         struct bfad_itnim_s *itnim;
  99
 100         cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
 101
 102         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 103         if (cmnd->device->host != NULL)
 104                 scsi_dma_unmap(cmnd);
 105
 106         cmnd->host_scribble = NULL;
 107
 108         /* Queue depth adjustment */
 109         if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
 110                 itnim_data = cmnd->device->hostdata;
 111                 if (itnim_data) {
 112                         itnim = itnim_data->itnim;
 113                         if (itnim)
 114                                 bfad_os_ramp_up_qdepth(itnim, cmnd->device);
 115                 }
 116         }
 117
 118         cmnd->scsi_done(cmnd);
 119 }
 120
 121 void
 122 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
 123 {
 124         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 125         struct bfad_s         *bfad = drv;
 126
 127         cmnd->result = ScsiResult(DID_ERROR, 0);
 128
 129         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 130         if (cmnd->device->host != NULL)
 131                 scsi_dma_unmap(cmnd);
 132
 133         bfa_trc(bfad, cmnd->result);
 134         cmnd->host_scribble = NULL;
 135 }
 136
 137 void
 138 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
 139                    enum bfi_tskim_status tsk_status)
 140 {
 141         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
 142         wait_queue_head_t *wq;
 143
 144         cmnd->SCp.Status |= tsk_status << 1;
 145         set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
 146         wq = (wait_queue_head_t *) cmnd->SCp.ptr;
 147         cmnd->SCp.ptr = NULL;
 148
 149         if (wq)
 150                 wake_up(wq);
 151 }
 152
 153 void
 154 bfa_cb_ioim_resfree(void *drv)
 155 {
 156 }
 157
 158 /**
 159  *  Scsi_Host_template SCSI host template
 160  */
 161 /**
 162  * Scsi_Host template entry, returns BFAD PCI info.
 163  */
 164 static const char *
 165 bfad_im_info(struct Scsi_Host *shost)
 166 {
 167         static char     bfa_buf[256];
 168         struct bfad_im_port_s *im_port =
 169                         (struct bfad_im_port_s *) shost->hostdata[0];
 170         struct bfa_ioc_attr_s  ioc_attr;
 171         struct bfad_s         *bfad = im_port->bfad;
 172
 173         memset(&ioc_attr, 0, sizeof(ioc_attr));
 174         bfa_get_attr(&bfad->bfa, &ioc_attr);
 175
 176         memset(bfa_buf, 0, sizeof(bfa_buf));
 177         snprintf(bfa_buf, sizeof(bfa_buf),
 178                  "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
 179                  ioc_attr.adapter_attr.model, bfad->pci_name,
 180                  BFAD_DRIVER_VERSION);
 181         return bfa_buf;
 182 }
 183
 184 /**
 185  * Scsi_Host template entry, aborts the specified SCSI command.
 186  *
 187  * Returns: SUCCESS or FAILED.
 188  */
 189 static int
 190 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
 191 {
 192         struct Scsi_Host *shost = cmnd->device->host;
 193         struct bfad_im_port_s *im_port =
 194                         (struct bfad_im_port_s *) shost->hostdata[0];
 195         struct bfad_s         *bfad = im_port->bfad;
 196         struct bfa_ioim_s *hal_io;
 197         unsigned long   flags;
 198         u32        timeout;
 199         int             rc = FAILED;
 200
 201         spin_lock_irqsave(&bfad->bfad_lock, flags);
 202         hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 203         if (!hal_io) {
 204                 /* IO has been completed, retrun success */
 205                 rc = SUCCESS;
 206                 goto out;
 207         }
 208         if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
 209                 rc = FAILED;
 210                 goto out;
 211         }
 212
 213         bfa_trc(bfad, hal_io->iotag);
 214         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT,
 215                 im_port->shost->host_no, cmnd, hal_io->iotag);
 216         bfa_ioim_abort(hal_io);
 217         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 218
 219         /* Need to wait until the command get aborted */
 220         timeout = 10;
 221         while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
 222                 set_current_state(TASK_UNINTERRUPTIBLE);
 223                 schedule_timeout(timeout);
 224                 if (timeout < 4 * HZ)
 225                         timeout *= 2;
 226         }
 227
 228         cmnd->scsi_done(cmnd);
 229         bfa_trc(bfad, hal_io->iotag);
 230         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP,
 231                 im_port->shost->host_no, cmnd, hal_io->iotag);
 232         return SUCCESS;
 233 out:
 234         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 235         return rc;
 236 }
 237
 238 static bfa_status_t
 239 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
 240                      struct bfad_itnim_s *itnim)
 241 {
 242         struct bfa_tskim_s *tskim;
 243         struct bfa_itnim_s *bfa_itnim;
 244         bfa_status_t    rc = BFA_STATUS_OK;
 245
 246         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 247         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 248         if (!tskim) {
 249                 BFA_DEV_PRINTF(bfad, BFA_ERR,
 250                                "target reset, fail to allocate tskim\n");
 251                 rc = BFA_STATUS_FAILED;
 252                 goto out;
 253         }
 254
 255         /*
 256          * Set host_scribble to NULL to avoid aborting a task command if
 257          * happens.
 258          */
 259         cmnd->host_scribble = NULL;
 260         cmnd->SCp.Status = 0;
 261         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 262         bfa_tskim_start(tskim, bfa_itnim, (lun_t)0,
 263                             FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
 264 out:
 265         return rc;
 266 }
 267
 268 /**
 269  * Scsi_Host template entry, resets a LUN and abort its all commands.
 270  *
 271  * Returns: SUCCESS or FAILED.
 272  *
 273  */
 274 static int
 275 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
 276 {
 277         struct Scsi_Host *shost = cmnd->device->host;
 278         struct bfad_im_port_s *im_port =
 279                         (struct bfad_im_port_s *) shost->hostdata[0];
 280         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
 281         struct bfad_s         *bfad = im_port->bfad;
 282         struct bfa_tskim_s *tskim;
 283         struct bfad_itnim_s   *itnim;
 284         struct bfa_itnim_s *bfa_itnim;
 285         DECLARE_WAIT_QUEUE_HEAD(wq);
 286         int             rc = SUCCESS;
 287         unsigned long   flags;
 288         enum bfi_tskim_status task_status;
 289
 290         spin_lock_irqsave(&bfad->bfad_lock, flags);
 291         itnim = itnim_data->itnim;
 292         if (!itnim) {
 293                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 294                 rc = FAILED;
 295                 goto out;
 296         }
 297
 298         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 299         if (!tskim) {
 300                 BFA_DEV_PRINTF(bfad, BFA_ERR,
 301                                 "LUN reset, fail to allocate tskim");
 302                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 303                 rc = FAILED;
 304                 goto out;
 305         }
 306
 307         /**
 308          * Set host_scribble to NULL to avoid aborting a task command
 309          * if happens.
 310          */
 311         cmnd->host_scribble = NULL;
 312         cmnd->SCp.ptr = (char *)&wq;
 313         cmnd->SCp.Status = 0;
 314         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 315         bfa_tskim_start(tskim, bfa_itnim,
 316                             bfad_int_to_lun(cmnd->device->lun),
 317                             FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
 318         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 319
 320         wait_event(wq, test_bit(IO_DONE_BIT,
 321                         (unsigned long *)&cmnd->SCp.Status));
 322
 323         task_status = cmnd->SCp.Status >> 1;
 324         if (task_status != BFI_TSKIM_STS_OK) {
 325                 BFA_DEV_PRINTF(bfad, BFA_ERR, "LUN reset failure, status: %d\n",
 326                                task_status);
 327                 rc = FAILED;
 328         }
 329
 330 out:
 331         return rc;
 332 }
 333
 334 /**
 335  * Scsi_Host template entry, resets the bus and abort all commands.
 336  */
 337 static int
 338 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
 339 {
 340         struct Scsi_Host *shost = cmnd->device->host;
 341         struct bfad_im_port_s *im_port =
 342                                 (struct bfad_im_port_s *) shost->hostdata[0];
 343         struct bfad_s         *bfad = im_port->bfad;
 344         struct bfad_itnim_s   *itnim;
 345         unsigned long   flags;
 346         u32        i, rc, err_cnt = 0;
 347         DECLARE_WAIT_QUEUE_HEAD(wq);
 348         enum bfi_tskim_status task_status;
 349
 350         spin_lock_irqsave(&bfad->bfad_lock, flags);
 351         for (i = 0; i < MAX_FCP_TARGET; i++) {
 352                 itnim = bfad_os_get_itnim(im_port, i);
 353                 if (itnim) {
 354                         cmnd->SCp.ptr = (char *)&wq;
 355                         rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
 356                         if (rc != BFA_STATUS_OK) {
 357                                 err_cnt++;
 358                                 continue;
 359                         }
 360
 361                         /* wait target reset to complete */
 362                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 363                         wait_event(wq, test_bit(IO_DONE_BIT,
 364                                         (unsigned long *)&cmnd->SCp.Status));
 365                         spin_lock_irqsave(&bfad->bfad_lock, flags);
 366
 367                         task_status = cmnd->SCp.Status >> 1;
 368                         if (task_status != BFI_TSKIM_STS_OK) {
 369                                 BFA_DEV_PRINTF(bfad, BFA_ERR,
 370                                         "target reset failure,"
 371                                         " status: %d\n", task_status);
 372                                 err_cnt++;
 373                         }
 374                 }
 375         }
 376         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 377
 378         if (err_cnt)
 379                 return FAILED;
 380
 381         return SUCCESS;
 382 }
 383
 384 /**
 385  * Scsi_Host template entry slave_destroy.
 386  */
 387 static void
 388 bfad_im_slave_destroy(struct scsi_device *sdev)
 389 {
 390         sdev->hostdata = NULL;
 391         return;
 392 }
 393
 394 /**
 395  *  BFA FCS itnim callbacks
 396  */
 397
 398 /**
 399  * BFA FCS itnim alloc callback, after successful PRLI
 400  * Context: Interrupt
 401  */
 402 void
 403 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
 404                     struct bfad_itnim_s **itnim_drv)
 405 {
 406         *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
 407         if (*itnim_drv == NULL)
 408                 return;
 409
 410         (*itnim_drv)->im = bfad->im;
 411         *itnim = &(*itnim_drv)->fcs_itnim;
 412         (*itnim_drv)->state = ITNIM_STATE_NONE;
 413
 414         /*
 415          * Initiaze the itnim_work
 416          */
 417         INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
 418         bfad->bfad_flags |= BFAD_RPORT_ONLINE;
 419 }
 420
 421 /**
 422  * BFA FCS itnim free callback.
 423  * Context: Interrupt. bfad_lock is held
 424  */
 425 void
 426 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
 427 {
 428         struct bfad_port_s    *port;
 429         wwn_t wwpn;
 430         u32 fcid;
 431         char wwpn_str[32], fcid_str[16];
 432
 433         /* online to free state transtion should not happen */
 434         bfa_assert(itnim_drv->state != ITNIM_STATE_ONLINE);
 435
 436         itnim_drv->queue_work = 1;
 437         /* offline request is not yet done, use the same request to free */
 438         if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
 439                 itnim_drv->queue_work = 0;
 440
 441         itnim_drv->state = ITNIM_STATE_FREE;
 442         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 443         itnim_drv->im_port = port->im_port;
 444         wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
 445         fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
 446         wwn2str(wwpn_str, wwpn);
 447         fcid2str(fcid_str, fcid);
 448         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_FREE,
 449                 port->im_port->shost->host_no,
 450                 fcid_str, wwpn_str);
 451         bfad_os_itnim_process(itnim_drv);
 452 }
 453
 454 /**
 455  * BFA FCS itnim online callback.
 456  * Context: Interrupt. bfad_lock is held
 457  */
 458 void
 459 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
 460 {
 461         struct bfad_port_s    *port;
 462
 463         itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
 464         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 465         itnim_drv->state = ITNIM_STATE_ONLINE;
 466         itnim_drv->queue_work = 1;
 467         itnim_drv->im_port = port->im_port;
 468         bfad_os_itnim_process(itnim_drv);
 469 }
 470
 471 /**
 472  * BFA FCS itnim offline callback.
 473  * Context: Interrupt. bfad_lock is held
 474  */
 475 void
 476 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
 477 {
 478         struct bfad_port_s    *port;
 479         struct bfad_s *bfad;
 480
 481         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 482         bfad = port->bfad;
 483         if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
 484                  (port->flags & BFAD_PORT_DELETE)) {
 485                 itnim_drv->state = ITNIM_STATE_OFFLINE;
 486                 return;
 487         }
 488         itnim_drv->im_port = port->im_port;
 489         itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
 490         itnim_drv->queue_work = 1;
 491         bfad_os_itnim_process(itnim_drv);
 492 }
 493
 494 /**
 495  * BFA FCS itnim timeout callback.
 496  * Context: Interrupt. bfad_lock is held
 497  */
 498 void bfa_fcb_itnim_tov(struct bfad_itnim_s *itnim)
 499 {
 500         itnim->state = ITNIM_STATE_TIMEOUT;
 501 }
 502
 503 /**
 504  * Path TOV processing begin notification -- dummy for linux
 505  */
 506 void
 507 bfa_fcb_itnim_tov_begin(struct bfad_itnim_s *itnim)
 508 {
 509 }
 510
 511
 512
 513 /**
 514  * Allocate a Scsi_Host for a port.
 515  */
 516 int
 517 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 518 {
 519         int error = 1;
 520
 521         if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
 522                 printk(KERN_WARNING "idr_pre_get failure\n");
 523                 goto out;
 524         }
 525
 526         error = idr_get_new(&bfad_im_port_index, im_port,
 527                                          &im_port->idr_id);
 528         if (error) {
 529                 printk(KERN_WARNING "idr_get_new failure\n");
 530                 goto out;
 531         }
 532
 533         im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad);
 534         if (!im_port->shost) {
 535                 error = 1;
 536                 goto out_free_idr;
 537         }
 538
 539         im_port->shost->hostdata[0] = (unsigned long)im_port;
 540         im_port->shost->unique_id = im_port->idr_id;
 541         im_port->shost->this_id = -1;
 542         im_port->shost->max_id = MAX_FCP_TARGET;
 543         im_port->shost->max_lun = MAX_FCP_LUN;
 544         im_port->shost->max_cmd_len = 16;
 545         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 546         im_port->shost->transportt = bfad_im_scsi_transport_template;
 547
 548         error = bfad_os_scsi_add_host(im_port->shost, im_port, bfad);
 549         if (error) {
 550                 printk(KERN_WARNING "bfad_os_scsi_add_host failure %d\n",
 551                                                         error);
 552                 goto out_fc_rel;
 553         }
 554
 555         /* setup host fixed attribute if the lk supports */
 556         bfad_os_fc_host_init(im_port);
 557
 558         return 0;
 559
 560 out_fc_rel:
 561         scsi_host_put(im_port->shost);
 562 out_free_idr:
 563         idr_remove(&bfad_im_port_index, im_port->idr_id);
 564 out:
 565         return error;
 566 }
 567
 568 void
 569 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 570 {
 571         unsigned long flags;
 572
 573         bfa_trc(bfad, bfad->inst_no);
 574         bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE,
 575                         im_port->shost->host_no);
 576
 577         fc_remove_host(im_port->shost);
 578
 579         scsi_remove_host(im_port->shost);
 580         scsi_host_put(im_port->shost);
 581
 582         spin_lock_irqsave(&bfad->bfad_lock, flags);
 583         idr_remove(&bfad_im_port_index, im_port->idr_id);
 584         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 585 }
 586
 587 static void
 588 bfad_im_port_delete_handler(struct work_struct *work)
 589 {
 590         struct bfad_im_port_s *im_port =
 591                 container_of(work, struct bfad_im_port_s, port_delete_work);
 592
 593         bfad_im_scsi_host_free(im_port->bfad, im_port);
 594         bfad_im_port_clean(im_port);
 595         kfree(im_port);
 596 }
 597
 598 bfa_status_t
 599 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 600 {
 601         int             rc = BFA_STATUS_OK;
 602         struct bfad_im_port_s *im_port;
 603
 604         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 605         if (im_port == NULL) {
 606                 rc = BFA_STATUS_ENOMEM;
 607                 goto ext;
 608         }
 609         port->im_port = im_port;
 610         im_port->port = port;
 611         im_port->bfad = bfad;
 612
 613         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 614         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 615         INIT_LIST_HEAD(&im_port->binding_list);
 616
 617 ext:
 618         return rc;
 619 }
 620
 621 void
 622 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 623 {
 624         struct bfad_im_port_s *im_port = port->im_port;
 625
 626         queue_work(bfad->im->drv_workq,
 627                                 &im_port->port_delete_work);
 628 }
 629
 630 void
 631 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 632 {
 633         struct bfad_fcp_binding *bp, *bp_new;
 634         unsigned long flags;
 635         struct bfad_s *bfad =  im_port->bfad;
 636
 637         spin_lock_irqsave(&bfad->bfad_lock, flags);
 638         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 639                                         list_entry) {
 640                 list_del(&bp->list_entry);
 641                 kfree(bp);
 642         }
 643
 644         /* the itnim_mapped_list must be empty at this time */
 645         bfa_assert(list_empty(&im_port->itnim_mapped_list));
 646
 647         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 648 }
 649
 650 void
 651 bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port)
 652 {
 653 }
 654
 655 void
 656 bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port)
 657 {
 658 }
 659
 660 bfa_status_t
 661 bfad_im_probe(struct bfad_s *bfad)
 662 {
 663         struct bfad_im_s      *im;
 664         bfa_status_t    rc = BFA_STATUS_OK;
 665
 666         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 667         if (im == NULL) {
 668                 rc = BFA_STATUS_ENOMEM;
 669                 goto ext;
 670         }
 671
 672         bfad->im = im;
 673         im->bfad = bfad;
 674
 675         if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) {
 676                 kfree(im);
 677                 rc = BFA_STATUS_FAILED;
 678         }
 679
 680 ext:
 681         return rc;
 682 }
 683
 684 void
 685 bfad_im_probe_undo(struct bfad_s *bfad)
 686 {
 687         if (bfad->im) {
 688                 bfad_os_destroy_workq(bfad->im);
 689                 kfree(bfad->im);
 690                 bfad->im = NULL;
 691         }
 692 }
 693
 694
 695
 696
 697 int
 698 bfad_os_scsi_add_host(struct Scsi_Host *shost, struct bfad_im_port_s *im_port,
 699                         struct bfad_s *bfad)
 700 {
 701     struct device *dev;
 702
 703     if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 704                 dev = &bfad->pcidev->dev;
 705     else
 706                 dev = &bfad->pport.im_port->shost->shost_gendev;
 707
 708     return scsi_add_host(shost, dev);
 709 }
 710
 711 struct Scsi_Host *
 712 bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 713 {
 714         struct scsi_host_template *sht;
 715
 716         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 717                 sht = &bfad_im_scsi_host_template;
 718         else
 719                 sht = &bfad_im_vport_template;
 720
 721         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 722
 723         return scsi_host_alloc(sht, sizeof(unsigned long));
 724 }
 725
 726 void
 727 bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 728 {
 729         flush_workqueue(bfad->im->drv_workq);
 730         bfad_im_scsi_host_free(im_port->bfad, im_port);
 731         bfad_im_port_clean(im_port);
 732         kfree(im_port);
 733 }
 734
 735 void
 736 bfad_os_destroy_workq(struct bfad_im_s *im)
 737 {
 738         if (im && im->drv_workq) {
 739                 destroy_workqueue(im->drv_workq);
 740                 im->drv_workq = NULL;
 741         }
 742 }
 743
 744 bfa_status_t
 745 bfad_os_thread_workq(struct bfad_s *bfad)
 746 {
 747         struct bfad_im_s      *im = bfad->im;
 748
 749         bfa_trc(bfad, 0);
 750         snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d",
 751                  bfad->inst_no);
 752         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 753         if (!im->drv_workq)
 754                 return BFA_STATUS_FAILED;
 755
 756         return BFA_STATUS_OK;
 757 }
 758
 759 /**
 760  * Scsi_Host template entry.
 761  *
 762  * Description:
 763  * OS entry point to adjust the queue_depths on a per-device basis.
 764  * Called once per device during the bus scan.
 765  * Return non-zero if fails.
 766  */
 767 static int
 768 bfad_im_slave_configure(struct scsi_device *sdev)
 769 {
 770         if (sdev->tagged_supported)
 771                 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
 772         else
 773                 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
 774
 775         return 0;
 776 }
 777
 778 struct scsi_host_template bfad_im_scsi_host_template = {
 779         .module = THIS_MODULE,
 780         .name = BFAD_DRIVER_NAME,
 781         .info = bfad_im_info,
 782         .queuecommand = bfad_im_queuecommand,
 783         .eh_abort_handler = bfad_im_abort_handler,
 784         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 785         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 786
 787         .slave_alloc = bfad_im_slave_alloc,
 788         .slave_configure = bfad_im_slave_configure,
 789         .slave_destroy = bfad_im_slave_destroy,
 790
 791         .this_id = -1,
 792         .sg_tablesize = BFAD_IO_MAX_SGE,
 793         .cmd_per_lun = 3,
 794         .use_clustering = ENABLE_CLUSTERING,
 795         .shost_attrs = bfad_im_host_attrs,
 796         .max_sectors = 0xFFFF,
 797 };
 798
 799 struct scsi_host_template bfad_im_vport_template = {
 800         .module = THIS_MODULE,
 801         .name = BFAD_DRIVER_NAME,
 802         .info = bfad_im_info,
 803         .queuecommand = bfad_im_queuecommand,
 804         .eh_abort_handler = bfad_im_abort_handler,
 805         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 806         .eh_bus_reset_handler = bfad_im_reset_bus_handler,
 807
 808         .slave_alloc = bfad_im_slave_alloc,
 809         .slave_configure = bfad_im_slave_configure,
 810         .slave_destroy = bfad_im_slave_destroy,
 811
 812         .this_id = -1,
 813         .sg_tablesize = BFAD_IO_MAX_SGE,
 814         .cmd_per_lun = 3,
 815         .use_clustering = ENABLE_CLUSTERING,
 816         .shost_attrs = bfad_im_vport_attrs,
 817         .max_sectors = 0xFFFF,
 818 };
 819
 820 void
 821 bfad_im_probe_post(struct bfad_im_s *im)
 822 {
 823         flush_workqueue(im->drv_workq);
 824 }
 825
 826 bfa_status_t
 827 bfad_im_module_init(void)
 828 {
 829         bfad_im_scsi_transport_template =
 830                 fc_attach_transport(&bfad_im_fc_function_template);
 831         if (!bfad_im_scsi_transport_template)
 832                 return BFA_STATUS_ENOMEM;
 833
 834         return BFA_STATUS_OK;
 835 }
 836
 837 void
 838 bfad_im_module_exit(void)
 839 {
 840         if (bfad_im_scsi_transport_template)
 841                 fc_release_transport(bfad_im_scsi_transport_template);
 842 }
 843
 844 void
 845 bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv)
 846 {
 847         struct bfad_im_s      *im = itnim_drv->im;
 848
 849         if (itnim_drv->queue_work)
 850                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 851 }
 852
 853 void
 854 bfad_os_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_os_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
 896
 897
 898 struct bfad_itnim_s *
 899 bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id)
 900 {
 901         struct bfad_itnim_s   *itnim = NULL;
 902
 903         /* Search the mapped list for this target ID */
 904         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 905                 if (id == itnim->scsi_tgt_id)
 906                         return itnim;
 907         }
 908
 909         return NULL;
 910 }
 911
 912 /**
 913  * Scsi_Host template entry slave_alloc
 914  */
 915 static int
 916 bfad_im_slave_alloc(struct scsi_device *sdev)
 917 {
 918         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 919
 920         if (!rport || fc_remote_port_chkready(rport))
 921                 return -ENXIO;
 922
 923         sdev->hostdata = rport->dd_data;
 924
 925         return 0;
 926 }
 927
 928 void
 929 bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
 930 {
 931         struct Scsi_Host *host = im_port->shost;
 932         struct bfad_s         *bfad = im_port->bfad;
 933         struct bfad_port_s    *port = im_port->port;
 934         union attr {
 935                 struct bfa_pport_attr_s pattr;
 936                 struct bfa_ioc_attr_s  ioc_attr;
 937         } attr;
 938
 939         fc_host_node_name(host) =
 940                 bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port)));
 941         fc_host_port_name(host) =
 942                 bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port)));
 943
 944         fc_host_supported_classes(host) = FC_COS_CLASS3;
 945
 946         memset(fc_host_supported_fc4s(host), 0,
 947                sizeof(fc_host_supported_fc4s(host)));
 948         if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
 949                 /* For FCP type 0x08 */
 950                 fc_host_supported_fc4s(host)[2] = 1;
 951         if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
 952                 /* For LLC/SNAP type 0x05 */
 953                 fc_host_supported_fc4s(host)[3] = 0x20;
 954         /* For fibre channel services type 0x20 */
 955         fc_host_supported_fc4s(host)[7] = 1;
 956
 957         memset(&attr.ioc_attr, 0, sizeof(attr.ioc_attr));
 958         bfa_get_attr(&bfad->bfa, &attr.ioc_attr);
 959         sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
 960                 attr.ioc_attr.adapter_attr.model,
 961                 attr.ioc_attr.adapter_attr.fw_ver, BFAD_DRIVER_VERSION);
 962
 963         fc_host_supported_speeds(host) = 0;
 964         fc_host_supported_speeds(host) |=
 965                 FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
 966                 FC_PORTSPEED_1GBIT;
 967
 968         memset(&attr.pattr, 0, sizeof(attr.pattr));
 969         bfa_pport_get_attr(&bfad->bfa, &attr.pattr);
 970         fc_host_maxframe_size(host) = attr.pattr.pport_cfg.maxfrsize;
 971 }
 972
 973 static void
 974 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
 975 {
 976         struct fc_rport_identifiers rport_ids;
 977         struct fc_rport *fc_rport;
 978         struct bfad_itnim_data_s *itnim_data;
 979
 980         rport_ids.node_name =
 981                 bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
 982         rport_ids.port_name =
 983                 bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
 984         rport_ids.port_id =
 985                 bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
 986         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
 987
 988         itnim->fc_rport = fc_rport =
 989                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
 990
 991         if (!fc_rport)
 992                 return;
 993
 994         fc_rport->maxframe_size =
 995                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
 996         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
 997
 998         itnim_data = fc_rport->dd_data;
 999         itnim_data->itnim = itnim;
1000
1001         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1002
1003         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1004                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1005
1006         if ((fc_rport->scsi_target_id != -1)
1007             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1008                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1009
1010         return;
1011 }
1012
1013 /**
1014  * Work queue handler using FC transport service
1015 * Context: kernel
1016  */
1017 static void
1018 bfad_im_itnim_work_handler(struct work_struct *work)
1019 {
1020         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1021                                                         itnim_work);
1022         struct bfad_im_s      *im = itnim->im;
1023         struct bfad_s         *bfad = im->bfad;
1024         struct bfad_im_port_s *im_port;
1025         unsigned long   flags;
1026         struct fc_rport *fc_rport;
1027         wwn_t wwpn;
1028         u32 fcid;
1029         char wwpn_str[32], fcid_str[16];
1030
1031         spin_lock_irqsave(&bfad->bfad_lock, flags);
1032         im_port = itnim->im_port;
1033         bfa_trc(bfad, itnim->state);
1034         switch (itnim->state) {
1035         case ITNIM_STATE_ONLINE:
1036                 if (!itnim->fc_rport) {
1037                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1038                         bfad_im_fc_rport_add(im_port, itnim);
1039                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1040                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1041                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1042                         wwn2str(wwpn_str, wwpn);
1043                         fcid2str(fcid_str, fcid);
1044                         list_add_tail(&itnim->list_entry,
1045                                 &im_port->itnim_mapped_list);
1046                         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE,
1047                                 im_port->shost->host_no,
1048                                 itnim->scsi_tgt_id,
1049                                 fcid_str, wwpn_str);
1050                 } else {
1051                         printk(KERN_WARNING
1052                                 "%s: itnim %llx is already in online state\n",
1053                                 __func__,
1054                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1055                 }
1056
1057                 break;
1058         case ITNIM_STATE_OFFLINE_PENDING:
1059                 itnim->state = ITNIM_STATE_OFFLINE;
1060                 if (itnim->fc_rport) {
1061                         fc_rport = itnim->fc_rport;
1062                         ((struct bfad_itnim_data_s *)
1063                                 fc_rport->dd_data)->itnim = NULL;
1064                         itnim->fc_rport = NULL;
1065                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1066                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1067                                 fc_rport->dev_loss_tmo =
1068                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1069                                 fc_remote_port_delete(fc_rport);
1070                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1071                         }
1072                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1073                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1074                         wwn2str(wwpn_str, wwpn);
1075                         fcid2str(fcid_str, fcid);
1076                         list_del(&itnim->list_entry);
1077                         bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE,
1078                                 im_port->shost->host_no,
1079                                 itnim->scsi_tgt_id,
1080                                 fcid_str, wwpn_str);
1081                 }
1082                 break;
1083         case ITNIM_STATE_FREE:
1084                 if (itnim->fc_rport) {
1085                         fc_rport = itnim->fc_rport;
1086                         ((struct bfad_itnim_data_s *)
1087                                 fc_rport->dd_data)->itnim = NULL;
1088                         itnim->fc_rport = NULL;
1089                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1090                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1091                                 fc_rport->dev_loss_tmo =
1092                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1093                                 fc_remote_port_delete(fc_rport);
1094                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1095                         }
1096                         list_del(&itnim->list_entry);
1097                 }
1098
1099                 kfree(itnim);
1100                 break;
1101         default:
1102                 bfa_assert(0);
1103                 break;
1104         }
1105
1106         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1107 }
1108
1109 /**
1110  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1111  */
1112 static int
1113 bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1114 {
1115         struct bfad_im_port_s *im_port =
1116                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1117         struct bfad_s         *bfad = im_port->bfad;
1118         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1119         struct bfad_itnim_s   *itnim;
1120         struct bfa_ioim_s *hal_io;
1121         unsigned long   flags;
1122         int             rc;
1123         s16        sg_cnt = 0;
1124         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1125
1126         rc = fc_remote_port_chkready(rport);
1127         if (rc) {
1128                 cmnd->result = rc;
1129                 done(cmnd);
1130                 return 0;
1131         }
1132
1133         sg_cnt = scsi_dma_map(cmnd);
1134
1135         if (sg_cnt < 0)
1136                 return SCSI_MLQUEUE_HOST_BUSY;
1137
1138         cmnd->scsi_done = done;
1139
1140         spin_lock_irqsave(&bfad->bfad_lock, flags);
1141         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1142                 printk(KERN_WARNING
1143                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1144                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1145                 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1146                 goto out_fail_cmd;
1147         }
1148
1149         itnim = itnim_data->itnim;
1150         if (!itnim) {
1151                 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1152                 goto out_fail_cmd;
1153         }
1154
1155         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1156                                     itnim->bfa_itnim, sg_cnt);
1157         if (!hal_io) {
1158                 printk(KERN_WARNING "hal_io failure\n");
1159                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1160                 scsi_dma_unmap(cmnd);
1161                 return SCSI_MLQUEUE_HOST_BUSY;
1162         }
1163
1164         cmnd->host_scribble = (char *)hal_io;
1165         bfa_trc_fp(bfad, hal_io->iotag);
1166         bfa_ioim_start(hal_io);
1167         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1168
1169         return 0;
1170
1171 out_fail_cmd:
1172         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1173         scsi_dma_unmap(cmnd);
1174         if (done)
1175                 done(cmnd);
1176
1177         return 0;
1178 }
1179
1180 void
1181 bfad_os_rport_online_wait(struct bfad_s *bfad)
1182 {
1183         int i;
1184         int rport_delay = 10;
1185
1186         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1187                  && i < bfa_linkup_delay; i++)
1188                 schedule_timeout_uninterruptible(HZ);
1189
1190         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1191                 rport_delay = rport_delay < bfa_linkup_delay ?
1192                                  rport_delay : bfa_linkup_delay;
1193                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1194                          && i < rport_delay; i++)
1195                         schedule_timeout_uninterruptible(HZ);
1196
1197                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE))
1198                         schedule_timeout_uninterruptible(rport_delay * HZ);
1199         }
1200 }
1201
1202 int
1203 bfad_os_get_linkup_delay(struct bfad_s *bfad)
1204 {
1205
1206         u8         nwwns = 0;
1207         wwn_t           *wwns;
1208         int             ldelay;
1209
1210         /*
1211          * Querying for the boot target port wwns
1212          * -- read from boot information in flash.
1213          * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30
1214          * else => local boot machine set bfa_linkup_delay = 10
1215          */
1216
1217         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns);
1218
1219         if (nwwns > 0) {
1220                 /* If boot over SAN; linkup_delay = 30sec */
1221                 ldelay = 30;
1222         } else {
1223                 /* If local boot; linkup_delay = 10sec */
1224                 ldelay = 0;
1225         }
1226
1227         return ldelay;
1228 }
1229
1230