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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.4 * Copyright (c) 2014- QLogic Corporation.5 * All rights reserved6 * www.qlogic.com7 *8 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.9 */10 11/*12 * bfad_im.c Linux driver IM module.13 */14 15#include <linux/export.h>16 17#include "bfad_drv.h"18#include "bfad_im.h"19#include "bfa_fcs.h"20 21BFA_TRC_FILE(LDRV, IM);22 23DEFINE_IDR(bfad_im_port_index);24struct scsi_transport_template *bfad_im_scsi_transport_template;25struct scsi_transport_template *bfad_im_scsi_vport_transport_template;26static void bfad_im_itnim_work_handler(struct work_struct *work);27static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);28static int bfad_im_slave_alloc(struct scsi_device *sdev);29static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,30 struct bfad_itnim_s *itnim);31 32void33bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,34 enum bfi_ioim_status io_status, u8 scsi_status,35 int sns_len, u8 *sns_info, s32 residue)36{37 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;38 struct bfad_s *bfad = drv;39 struct bfad_itnim_data_s *itnim_data;40 struct bfad_itnim_s *itnim;41 u8 host_status = DID_OK;42 43 switch (io_status) {44 case BFI_IOIM_STS_OK:45 bfa_trc(bfad, scsi_status);46 scsi_set_resid(cmnd, 0);47 48 if (sns_len > 0) {49 bfa_trc(bfad, sns_len);50 if (sns_len > SCSI_SENSE_BUFFERSIZE)51 sns_len = SCSI_SENSE_BUFFERSIZE;52 memcpy(cmnd->sense_buffer, sns_info, sns_len);53 }54 55 if (residue > 0) {56 bfa_trc(bfad, residue);57 scsi_set_resid(cmnd, residue);58 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&59 (scsi_bufflen(cmnd) - residue) <60 cmnd->underflow) {61 bfa_trc(bfad, 0);62 host_status = DID_ERROR;63 }64 }65 cmnd->result = host_status << 16 | scsi_status;66 67 break;68 69 case BFI_IOIM_STS_TIMEDOUT:70 cmnd->result = DID_TIME_OUT << 16;71 break;72 case BFI_IOIM_STS_PATHTOV:73 cmnd->result = DID_TRANSPORT_DISRUPTED << 16;74 break;75 default:76 cmnd->result = DID_ERROR << 16;77 }78 79 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */80 if (cmnd->device->host != NULL)81 scsi_dma_unmap(cmnd);82 83 cmnd->host_scribble = NULL;84 bfa_trc(bfad, cmnd->result);85 86 itnim_data = cmnd->device->hostdata;87 if (itnim_data) {88 itnim = itnim_data->itnim;89 if (!cmnd->result && itnim &&90 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {91 /* Queue depth adjustment for good status completion */92 bfad_ramp_up_qdepth(itnim, cmnd->device);93 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {94 /* qfull handling */95 bfad_handle_qfull(itnim, cmnd->device);96 }97 }98 99 scsi_done(cmnd);100}101 102void103bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)104{105 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;106 struct bfad_itnim_data_s *itnim_data;107 struct bfad_itnim_s *itnim;108 109 cmnd->result = DID_OK << 16 | SAM_STAT_GOOD;110 111 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */112 if (cmnd->device->host != NULL)113 scsi_dma_unmap(cmnd);114 115 cmnd->host_scribble = NULL;116 117 /* Queue depth adjustment */118 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {119 itnim_data = cmnd->device->hostdata;120 if (itnim_data) {121 itnim = itnim_data->itnim;122 if (itnim)123 bfad_ramp_up_qdepth(itnim, cmnd->device);124 }125 }126 127 scsi_done(cmnd);128}129 130void131bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)132{133 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;134 struct bfad_s *bfad = drv;135 136 cmnd->result = DID_ERROR << 16;137 138 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */139 if (cmnd->device->host != NULL)140 scsi_dma_unmap(cmnd);141 142 bfa_trc(bfad, cmnd->result);143 cmnd->host_scribble = NULL;144}145 146void147bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,148 enum bfi_tskim_status tsk_status)149{150 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;151 wait_queue_head_t *wq;152 153 bfad_priv(cmnd)->status |= tsk_status << 1;154 set_bit(IO_DONE_BIT, &bfad_priv(cmnd)->status);155 wq = bfad_priv(cmnd)->wq;156 bfad_priv(cmnd)->wq = NULL;157 158 if (wq)159 wake_up(wq);160}161 162/*163 * Scsi_Host_template SCSI host template164 */165/*166 * Scsi_Host template entry, returns BFAD PCI info.167 */168static const char *169bfad_im_info(struct Scsi_Host *shost)170{171 static char bfa_buf[256];172 struct bfad_im_port_s *im_port =173 (struct bfad_im_port_s *) shost->hostdata[0];174 struct bfad_s *bfad = im_port->bfad;175 176 memset(bfa_buf, 0, sizeof(bfa_buf));177 snprintf(bfa_buf, sizeof(bfa_buf),178 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",179 bfad->pci_name, BFAD_DRIVER_VERSION);180 181 return bfa_buf;182}183 184/*185 * Scsi_Host template entry, aborts the specified SCSI command.186 *187 * Returns: SUCCESS or FAILED.188 */189static int190bfad_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, return 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(KERN_INFO, bfad, bfa_log_level,215 "scsi%d: abort cmnd %p iotag %x\n",216 im_port->shost->host_no, cmnd, hal_io->iotag);217 (void) bfa_ioim_abort(hal_io);218 spin_unlock_irqrestore(&bfad->bfad_lock, flags);219 220 /* Need to wait until the command get aborted */221 timeout = 10;222 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {223 set_current_state(TASK_UNINTERRUPTIBLE);224 schedule_timeout(timeout);225 if (timeout < 4 * HZ)226 timeout *= 2;227 }228 229 scsi_done(cmnd);230 bfa_trc(bfad, hal_io->iotag);231 BFA_LOG(KERN_INFO, bfad, bfa_log_level,232 "scsi%d: complete abort 0x%p iotag 0x%x\n",233 im_port->shost->host_no, cmnd, hal_io->iotag);234 return SUCCESS;235out:236 spin_unlock_irqrestore(&bfad->bfad_lock, flags);237 return rc;238}239 240static bfa_status_t241bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,242 struct bfad_itnim_s *itnim)243{244 struct bfa_tskim_s *tskim;245 struct bfa_itnim_s *bfa_itnim;246 bfa_status_t rc = BFA_STATUS_OK;247 struct scsi_lun scsilun;248 249 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);250 if (!tskim) {251 BFA_LOG(KERN_ERR, bfad, bfa_log_level,252 "target reset, fail to allocate tskim\n");253 rc = BFA_STATUS_FAILED;254 goto out;255 }256 257 /*258 * Set host_scribble to NULL to avoid aborting a task command if259 * happens.260 */261 cmnd->host_scribble = NULL;262 bfad_priv(cmnd)->status = 0;263 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);264 /*265 * bfa_itnim can be NULL if the port gets disconnected and the bfa266 * and fcs layers have cleaned up their nexus with the targets and267 * the same has not been cleaned up by the shim268 */269 if (bfa_itnim == NULL) {270 bfa_tskim_free(tskim);271 BFA_LOG(KERN_ERR, bfad, bfa_log_level,272 "target reset, bfa_itnim is NULL\n");273 rc = BFA_STATUS_FAILED;274 goto out;275 }276 277 memset(&scsilun, 0, sizeof(scsilun));278 bfa_tskim_start(tskim, bfa_itnim, scsilun,279 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);280out:281 return rc;282}283 284/*285 * Scsi_Host template entry, resets a LUN and abort its all commands.286 *287 * Returns: SUCCESS or FAILED.288 *289 */290static int291bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)292{293 struct Scsi_Host *shost = cmnd->device->host;294 struct bfad_im_port_s *im_port =295 (struct bfad_im_port_s *) shost->hostdata[0];296 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;297 struct bfad_s *bfad = im_port->bfad;298 struct bfa_tskim_s *tskim;299 struct bfad_itnim_s *itnim;300 struct bfa_itnim_s *bfa_itnim;301 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);302 int rc = SUCCESS;303 unsigned long flags;304 enum bfi_tskim_status task_status;305 struct scsi_lun scsilun;306 307 spin_lock_irqsave(&bfad->bfad_lock, flags);308 itnim = itnim_data->itnim;309 if (!itnim) {310 spin_unlock_irqrestore(&bfad->bfad_lock, flags);311 rc = FAILED;312 goto out;313 }314 315 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);316 if (!tskim) {317 BFA_LOG(KERN_ERR, bfad, bfa_log_level,318 "LUN reset, fail to allocate tskim");319 spin_unlock_irqrestore(&bfad->bfad_lock, flags);320 rc = FAILED;321 goto out;322 }323 324 /*325 * Set host_scribble to NULL to avoid aborting a task command326 * if happens.327 */328 cmnd->host_scribble = NULL;329 bfad_priv(cmnd)->wq = &wq;330 bfad_priv(cmnd)->status = 0;331 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);332 /*333 * bfa_itnim can be NULL if the port gets disconnected and the bfa334 * and fcs layers have cleaned up their nexus with the targets and335 * the same has not been cleaned up by the shim336 */337 if (bfa_itnim == NULL) {338 bfa_tskim_free(tskim);339 BFA_LOG(KERN_ERR, bfad, bfa_log_level,340 "lun reset, bfa_itnim is NULL\n");341 spin_unlock_irqrestore(&bfad->bfad_lock, flags);342 rc = FAILED;343 goto out;344 }345 int_to_scsilun(cmnd->device->lun, &scsilun);346 bfa_tskim_start(tskim, bfa_itnim, scsilun,347 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);348 spin_unlock_irqrestore(&bfad->bfad_lock, flags);349 350 wait_event(wq, test_bit(IO_DONE_BIT, &bfad_priv(cmnd)->status));351 352 task_status = bfad_priv(cmnd)->status >> 1;353 if (task_status != BFI_TSKIM_STS_OK) {354 BFA_LOG(KERN_ERR, bfad, bfa_log_level,355 "LUN reset failure, status: %d\n", task_status);356 rc = FAILED;357 }358 359out:360 return rc;361}362 363/*364 * Scsi_Host template entry, resets the target and abort all commands.365 */366static int367bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)368{369 struct Scsi_Host *shost = cmnd->device->host;370 struct scsi_target *starget = scsi_target(cmnd->device);371 struct bfad_im_port_s *im_port =372 (struct bfad_im_port_s *) shost->hostdata[0];373 struct bfad_s *bfad = im_port->bfad;374 struct bfad_itnim_s *itnim;375 unsigned long flags;376 u32 rc, rtn = FAILED;377 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);378 enum bfi_tskim_status task_status;379 380 spin_lock_irqsave(&bfad->bfad_lock, flags);381 itnim = bfad_get_itnim(im_port, starget->id);382 if (itnim) {383 bfad_priv(cmnd)->wq = &wq;384 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);385 if (rc == BFA_STATUS_OK) {386 /* wait target reset to complete */387 spin_unlock_irqrestore(&bfad->bfad_lock, flags);388 wait_event(wq, test_bit(IO_DONE_BIT,389 &bfad_priv(cmnd)->status));390 spin_lock_irqsave(&bfad->bfad_lock, flags);391 392 task_status = bfad_priv(cmnd)->status >> 1;393 if (task_status != BFI_TSKIM_STS_OK)394 BFA_LOG(KERN_ERR, bfad, bfa_log_level,395 "target reset failure,"396 " status: %d\n", task_status);397 else398 rtn = SUCCESS;399 }400 }401 spin_unlock_irqrestore(&bfad->bfad_lock, flags);402 403 return rtn;404}405 406/*407 * Scsi_Host template entry slave_destroy.408 */409static void410bfad_im_slave_destroy(struct scsi_device *sdev)411{412 sdev->hostdata = NULL;413 return;414}415 416/*417 * BFA FCS itnim callbacks418 */419 420/*421 * BFA FCS itnim alloc callback, after successful PRLI422 * Context: Interrupt423 */424int425bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,426 struct bfad_itnim_s **itnim_drv)427{428 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);429 if (*itnim_drv == NULL)430 return -ENOMEM;431 432 (*itnim_drv)->im = bfad->im;433 *itnim = &(*itnim_drv)->fcs_itnim;434 (*itnim_drv)->state = ITNIM_STATE_NONE;435 436 /*437 * Initiaze the itnim_work438 */439 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);440 bfad->bfad_flags |= BFAD_RPORT_ONLINE;441 return 0;442}443 444/*445 * BFA FCS itnim free callback.446 * Context: Interrupt. bfad_lock is held447 */448void449bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)450{451 struct bfad_port_s *port;452 wwn_t wwpn;453 u32 fcid;454 char wwpn_str[32], fcid_str[16];455 struct bfad_im_s *im = itnim_drv->im;456 457 /* online to free state transtion should not happen */458 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);459 460 itnim_drv->queue_work = 1;461 /* offline request is not yet done, use the same request to free */462 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)463 itnim_drv->queue_work = 0;464 465 itnim_drv->state = ITNIM_STATE_FREE;466 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);467 itnim_drv->im_port = port->im_port;468 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);469 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);470 wwn2str(wwpn_str, wwpn);471 fcid2str(fcid_str, fcid);472 BFA_LOG(KERN_INFO, bfad, bfa_log_level,473 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",474 port->im_port->shost->host_no,475 fcid_str, wwpn_str);476 477 /* ITNIM processing */478 if (itnim_drv->queue_work)479 queue_work(im->drv_workq, &itnim_drv->itnim_work);480}481 482/*483 * BFA FCS itnim online callback.484 * Context: Interrupt. bfad_lock is held485 */486void487bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)488{489 struct bfad_port_s *port;490 struct bfad_im_s *im = itnim_drv->im;491 492 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);493 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);494 itnim_drv->state = ITNIM_STATE_ONLINE;495 itnim_drv->queue_work = 1;496 itnim_drv->im_port = port->im_port;497 498 /* ITNIM processing */499 if (itnim_drv->queue_work)500 queue_work(im->drv_workq, &itnim_drv->itnim_work);501}502 503/*504 * BFA FCS itnim offline callback.505 * Context: Interrupt. bfad_lock is held506 */507void508bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)509{510 struct bfad_port_s *port;511 struct bfad_s *bfad;512 struct bfad_im_s *im = itnim_drv->im;513 514 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);515 bfad = port->bfad;516 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||517 (port->flags & BFAD_PORT_DELETE)) {518 itnim_drv->state = ITNIM_STATE_OFFLINE;519 return;520 }521 itnim_drv->im_port = port->im_port;522 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;523 itnim_drv->queue_work = 1;524 525 /* ITNIM processing */526 if (itnim_drv->queue_work)527 queue_work(im->drv_workq, &itnim_drv->itnim_work);528}529 530/*531 * Allocate a Scsi_Host for a port.532 */533int534bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,535 struct device *dev)536{537 struct bfad_im_port_pointer *im_portp;538 int error;539 540 mutex_lock(&bfad_mutex);541 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);542 if (error < 0) {543 mutex_unlock(&bfad_mutex);544 printk(KERN_WARNING "idr_alloc failure\n");545 goto out;546 }547 im_port->idr_id = error;548 mutex_unlock(&bfad_mutex);549 550 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);551 if (!im_port->shost) {552 error = 1;553 goto out_free_idr;554 }555 556 im_portp = shost_priv(im_port->shost);557 im_portp->p = im_port;558 im_port->shost->unique_id = im_port->idr_id;559 im_port->shost->this_id = -1;560 im_port->shost->max_id = MAX_FCP_TARGET;561 im_port->shost->max_lun = MAX_FCP_LUN;562 im_port->shost->max_cmd_len = 16;563 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;564 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)565 im_port->shost->transportt = bfad_im_scsi_transport_template;566 else567 im_port->shost->transportt =568 bfad_im_scsi_vport_transport_template;569 570 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);571 if (error) {572 printk(KERN_WARNING "scsi_add_host failure %d\n", error);573 goto out_fc_rel;574 }575 576 return 0;577 578out_fc_rel:579 scsi_host_put(im_port->shost);580 im_port->shost = NULL;581out_free_idr:582 mutex_lock(&bfad_mutex);583 idr_remove(&bfad_im_port_index, im_port->idr_id);584 mutex_unlock(&bfad_mutex);585out:586 return error;587}588 589void590bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)591{592 bfa_trc(bfad, bfad->inst_no);593 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",594 im_port->shost->host_no);595 596 fc_remove_host(im_port->shost);597 598 scsi_remove_host(im_port->shost);599 scsi_host_put(im_port->shost);600 601 mutex_lock(&bfad_mutex);602 idr_remove(&bfad_im_port_index, im_port->idr_id);603 mutex_unlock(&bfad_mutex);604}605 606static void607bfad_im_port_delete_handler(struct work_struct *work)608{609 struct bfad_im_port_s *im_port =610 container_of(work, struct bfad_im_port_s, port_delete_work);611 612 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {613 im_port->flags |= BFAD_PORT_DELETE;614 fc_vport_terminate(im_port->fc_vport);615 }616}617 618bfa_status_t619bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)620{621 int rc = BFA_STATUS_OK;622 struct bfad_im_port_s *im_port;623 624 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);625 if (im_port == NULL) {626 rc = BFA_STATUS_ENOMEM;627 goto ext;628 }629 port->im_port = im_port;630 im_port->port = port;631 im_port->bfad = bfad;632 633 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);634 INIT_LIST_HEAD(&im_port->itnim_mapped_list);635 INIT_LIST_HEAD(&im_port->binding_list);636 637ext:638 return rc;639}640 641void642bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)643{644 struct bfad_im_port_s *im_port = port->im_port;645 646 queue_work(bfad->im->drv_workq,647 &im_port->port_delete_work);648}649 650void651bfad_im_port_clean(struct bfad_im_port_s *im_port)652{653 struct bfad_fcp_binding *bp, *bp_new;654 unsigned long flags;655 struct bfad_s *bfad = im_port->bfad;656 657 spin_lock_irqsave(&bfad->bfad_lock, flags);658 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,659 list_entry) {660 list_del(&bp->list_entry);661 kfree(bp);662 }663 664 /* the itnim_mapped_list must be empty at this time */665 WARN_ON(!list_empty(&im_port->itnim_mapped_list));666 667 spin_unlock_irqrestore(&bfad->bfad_lock, flags);668}669 670static void bfad_aen_im_notify_handler(struct work_struct *work)671{672 struct bfad_im_s *im =673 container_of(work, struct bfad_im_s, aen_im_notify_work);674 struct bfa_aen_entry_s *aen_entry;675 struct bfad_s *bfad = im->bfad;676 struct Scsi_Host *shost = bfad->pport.im_port->shost;677 void *event_data;678 unsigned long flags;679 680 while (!list_empty(&bfad->active_aen_q)) {681 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);682 bfa_q_deq(&bfad->active_aen_q, &aen_entry);683 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);684 event_data = (char *)aen_entry + sizeof(struct list_head);685 fc_host_post_vendor_event(shost, fc_get_event_number(),686 sizeof(struct bfa_aen_entry_s) -687 sizeof(struct list_head),688 (char *)event_data, BFAD_NL_VENDOR_ID);689 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);690 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);691 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);692 }693}694 695bfa_status_t696bfad_im_probe(struct bfad_s *bfad)697{698 struct bfad_im_s *im;699 700 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);701 if (im == NULL)702 return BFA_STATUS_ENOMEM;703 704 bfad->im = im;705 im->bfad = bfad;706 707 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {708 kfree(im);709 return BFA_STATUS_FAILED;710 }711 712 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);713 return BFA_STATUS_OK;714}715 716void717bfad_im_probe_undo(struct bfad_s *bfad)718{719 if (bfad->im) {720 bfad_destroy_workq(bfad->im);721 kfree(bfad->im);722 bfad->im = NULL;723 }724}725 726struct Scsi_Host *727bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)728{729 struct scsi_host_template *sht;730 731 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)732 sht = &bfad_im_scsi_host_template;733 else734 sht = &bfad_im_vport_template;735 736 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)737 sht->max_sectors = max_xfer_size << 1;738 739 sht->sg_tablesize = bfad->cfg_data.io_max_sge;740 741 return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));742}743 744void745bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)746{747 if (!(im_port->flags & BFAD_PORT_DELETE))748 flush_workqueue(bfad->im->drv_workq);749 bfad_im_scsi_host_free(im_port->bfad, im_port);750 bfad_im_port_clean(im_port);751 kfree(im_port);752}753 754void755bfad_destroy_workq(struct bfad_im_s *im)756{757 if (im && im->drv_workq) {758 destroy_workqueue(im->drv_workq);759 im->drv_workq = NULL;760 }761}762 763bfa_status_t764bfad_thread_workq(struct bfad_s *bfad)765{766 struct bfad_im_s *im = bfad->im;767 768 bfa_trc(bfad, 0);769 im->drv_workq = alloc_ordered_workqueue("bfad_wq_%d", WQ_MEM_RECLAIM,770 bfad->inst_no);771 if (!im->drv_workq)772 return BFA_STATUS_FAILED;773 774 return BFA_STATUS_OK;775}776 777/*778 * Scsi_Host template entry.779 *780 * Description:781 * OS entry point to adjust the queue_depths on a per-device basis.782 * Called once per device during the bus scan.783 * Return non-zero if fails.784 */785static int786bfad_im_slave_configure(struct scsi_device *sdev)787{788 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);789 return 0;790}791 792struct scsi_host_template bfad_im_scsi_host_template = {793 .module = THIS_MODULE,794 .name = BFAD_DRIVER_NAME,795 .info = bfad_im_info,796 .queuecommand = bfad_im_queuecommand,797 .cmd_size = sizeof(struct bfad_cmd_priv),798 .eh_timed_out = fc_eh_timed_out,799 .eh_abort_handler = bfad_im_abort_handler,800 .eh_device_reset_handler = bfad_im_reset_lun_handler,801 .eh_target_reset_handler = bfad_im_reset_target_handler,802 803 .slave_alloc = bfad_im_slave_alloc,804 .slave_configure = bfad_im_slave_configure,805 .slave_destroy = bfad_im_slave_destroy,806 807 .this_id = -1,808 .sg_tablesize = BFAD_IO_MAX_SGE,809 .cmd_per_lun = 3,810 .shost_groups = bfad_im_host_groups,811 .max_sectors = BFAD_MAX_SECTORS,812 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,813};814 815struct scsi_host_template bfad_im_vport_template = {816 .module = THIS_MODULE,817 .name = BFAD_DRIVER_NAME,818 .info = bfad_im_info,819 .queuecommand = bfad_im_queuecommand,820 .cmd_size = sizeof(struct bfad_cmd_priv),821 .eh_timed_out = fc_eh_timed_out,822 .eh_abort_handler = bfad_im_abort_handler,823 .eh_device_reset_handler = bfad_im_reset_lun_handler,824 .eh_target_reset_handler = bfad_im_reset_target_handler,825 826 .slave_alloc = bfad_im_slave_alloc,827 .slave_configure = bfad_im_slave_configure,828 .slave_destroy = bfad_im_slave_destroy,829 830 .this_id = -1,831 .sg_tablesize = BFAD_IO_MAX_SGE,832 .cmd_per_lun = 3,833 .shost_groups = bfad_im_vport_groups,834 .max_sectors = BFAD_MAX_SECTORS,835};836 837bfa_status_t838bfad_im_module_init(void)839{840 bfad_im_scsi_transport_template =841 fc_attach_transport(&bfad_im_fc_function_template);842 if (!bfad_im_scsi_transport_template)843 return BFA_STATUS_ENOMEM;844 845 bfad_im_scsi_vport_transport_template =846 fc_attach_transport(&bfad_im_vport_fc_function_template);847 if (!bfad_im_scsi_vport_transport_template) {848 fc_release_transport(bfad_im_scsi_transport_template);849 return BFA_STATUS_ENOMEM;850 }851 852 return BFA_STATUS_OK;853}854 855void856bfad_im_module_exit(void)857{858 if (bfad_im_scsi_transport_template)859 fc_release_transport(bfad_im_scsi_transport_template);860 861 if (bfad_im_scsi_vport_transport_template)862 fc_release_transport(bfad_im_scsi_vport_transport_template);863 864 idr_destroy(&bfad_im_port_index);865}866 867void868bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)869{870 struct scsi_device *tmp_sdev;871 872 if (((jiffies - itnim->last_ramp_up_time) >873 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&874 ((jiffies - itnim->last_queue_full_time) >875 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {876 shost_for_each_device(tmp_sdev, sdev->host) {877 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {878 if (tmp_sdev->id != sdev->id)879 continue;880 scsi_change_queue_depth(tmp_sdev,881 tmp_sdev->queue_depth + 1);882 883 itnim->last_ramp_up_time = jiffies;884 }885 }886 }887}888 889void890bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)891{892 struct scsi_device *tmp_sdev;893 894 itnim->last_queue_full_time = jiffies;895 896 shost_for_each_device(tmp_sdev, sdev->host) {897 if (tmp_sdev->id != sdev->id)898 continue;899 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);900 }901}902 903struct bfad_itnim_s *904bfad_get_itnim(struct bfad_im_port_s *im_port, int id)905{906 struct bfad_itnim_s *itnim = NULL;907 908 /* Search the mapped list for this target ID */909 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {910 if (id == itnim->scsi_tgt_id)911 return itnim;912 }913 914 return NULL;915}916 917/*918 * Function is invoked from the SCSI Host Template slave_alloc() entry point.919 * Has the logic to query the LUN Mask database to check if this LUN needs to920 * be made visible to the SCSI mid-layer or not.921 *922 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.923 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.924 */925static int926bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,927 struct fc_rport *rport)928{929 struct bfad_itnim_data_s *itnim_data =930 (struct bfad_itnim_data_s *) rport->dd_data;931 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;932 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;933 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);934 int i = 0, ret = -ENXIO;935 936 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {937 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&938 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&939 lun_list[i].rp_tag == bfa_rport->rport_tag &&940 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {941 ret = BFA_STATUS_OK;942 break;943 }944 }945 return ret;946}947 948/*949 * Scsi_Host template entry slave_alloc950 */951static int952bfad_im_slave_alloc(struct scsi_device *sdev)953{954 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));955 struct bfad_itnim_data_s *itnim_data;956 struct bfa_s *bfa;957 958 if (!rport || fc_remote_port_chkready(rport))959 return -ENXIO;960 961 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;962 bfa = itnim_data->itnim->bfa_itnim->bfa;963 964 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {965 /*966 * We should not mask LUN 0 - since this will translate967 * to no LUN / TARGET for SCSI ml resulting no scan.968 */969 if (sdev->lun == 0) {970 sdev->sdev_bflags |= BLIST_NOREPORTLUN |971 BLIST_SPARSELUN;972 goto done;973 }974 975 /*976 * Query LUN Mask configuration - to expose this LUN977 * to the SCSI mid-layer or to mask it.978 */979 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=980 BFA_STATUS_OK)981 return -ENXIO;982 }983done:984 sdev->hostdata = rport->dd_data;985 986 return 0;987}988 989u32990bfad_im_supported_speeds(struct bfa_s *bfa)991{992 struct bfa_ioc_attr_s *ioc_attr;993 u32 supported_speed = 0;994 995 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);996 if (!ioc_attr)997 return 0;998 999 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);1000 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)1001 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |1002 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;1003 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {1004 if (ioc_attr->adapter_attr.is_mezz) {1005 supported_speed |= FC_PORTSPEED_8GBIT |1006 FC_PORTSPEED_4GBIT |1007 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;1008 } else {1009 supported_speed |= FC_PORTSPEED_8GBIT |1010 FC_PORTSPEED_4GBIT |1011 FC_PORTSPEED_2GBIT;1012 }1013 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {1014 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |1015 FC_PORTSPEED_1GBIT;1016 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {1017 supported_speed |= FC_PORTSPEED_10GBIT;1018 }1019 kfree(ioc_attr);1020 return supported_speed;1021}1022 1023void1024bfad_fc_host_init(struct bfad_im_port_s *im_port)1025{1026 struct Scsi_Host *host = im_port->shost;1027 struct bfad_s *bfad = im_port->bfad;1028 struct bfad_port_s *port = im_port->port;1029 char symname[BFA_SYMNAME_MAXLEN];1030 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);1031 1032 fc_host_node_name(host) =1033 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));1034 fc_host_port_name(host) =1035 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));1036 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);1037 1038 fc_host_supported_classes(host) = FC_COS_CLASS3;1039 1040 memset(fc_host_supported_fc4s(host), 0,1041 sizeof(fc_host_supported_fc4s(host)));1042 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)1043 /* For FCP type 0x08 */1044 fc_host_supported_fc4s(host)[2] = 1;1045 /* For fibre channel services type 0x20 */1046 fc_host_supported_fc4s(host)[7] = 1;1047 1048 strscpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,1049 BFA_SYMNAME_MAXLEN);1050 sprintf(fc_host_symbolic_name(host), "%s", symname);1051 1052 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);1053 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;1054}1055 1056static void1057bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)1058{1059 struct fc_rport_identifiers rport_ids;1060 struct fc_rport *fc_rport;1061 struct bfad_itnim_data_s *itnim_data;1062 1063 rport_ids.node_name =1064 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));1065 rport_ids.port_name =1066 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));1067 rport_ids.port_id =1068 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));1069 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;1070 1071 itnim->fc_rport = fc_rport =1072 fc_remote_port_add(im_port->shost, 0, &rport_ids);1073 1074 if (!fc_rport)1075 return;1076 1077 fc_rport->maxframe_size =1078 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);1079 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);1080 1081 itnim_data = fc_rport->dd_data;1082 itnim_data->itnim = itnim;1083 1084 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;1085 1086 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)1087 fc_remote_port_rolechg(fc_rport, rport_ids.roles);1088 1089 if ((fc_rport->scsi_target_id != -1)1090 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))1091 itnim->scsi_tgt_id = fc_rport->scsi_target_id;1092 1093 itnim->channel = fc_rport->channel;1094 1095 return;1096}1097 1098/*1099 * Work queue handler using FC transport service1100* Context: kernel1101 */1102static void1103bfad_im_itnim_work_handler(struct work_struct *work)1104{1105 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,1106 itnim_work);1107 struct bfad_im_s *im = itnim->im;1108 struct bfad_s *bfad = im->bfad;1109 struct bfad_im_port_s *im_port;1110 unsigned long flags;1111 struct fc_rport *fc_rport;1112 wwn_t wwpn;1113 u32 fcid;1114 char wwpn_str[32], fcid_str[16];1115 1116 spin_lock_irqsave(&bfad->bfad_lock, flags);1117 im_port = itnim->im_port;1118 bfa_trc(bfad, itnim->state);1119 switch (itnim->state) {1120 case ITNIM_STATE_ONLINE:1121 if (!itnim->fc_rport) {1122 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1123 bfad_im_fc_rport_add(im_port, itnim);1124 spin_lock_irqsave(&bfad->bfad_lock, flags);1125 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);1126 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);1127 wwn2str(wwpn_str, wwpn);1128 fcid2str(fcid_str, fcid);1129 list_add_tail(&itnim->list_entry,1130 &im_port->itnim_mapped_list);1131 BFA_LOG(KERN_INFO, bfad, bfa_log_level,1132 "ITNIM ONLINE Target: %d:0:%d "1133 "FCID: %s WWPN: %s\n",1134 im_port->shost->host_no,1135 itnim->scsi_tgt_id,1136 fcid_str, wwpn_str);1137 } else {1138 printk(KERN_WARNING1139 "%s: itnim %llx is already in online state\n",1140 __func__,1141 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));1142 }1143 1144 break;1145 case ITNIM_STATE_OFFLINE_PENDING:1146 itnim->state = ITNIM_STATE_OFFLINE;1147 if (itnim->fc_rport) {1148 fc_rport = itnim->fc_rport;1149 ((struct bfad_itnim_data_s *)1150 fc_rport->dd_data)->itnim = NULL;1151 itnim->fc_rport = NULL;1152 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {1153 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1154 fc_rport->dev_loss_tmo =1155 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;1156 fc_remote_port_delete(fc_rport);1157 spin_lock_irqsave(&bfad->bfad_lock, flags);1158 }1159 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);1160 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);1161 wwn2str(wwpn_str, wwpn);1162 fcid2str(fcid_str, fcid);1163 list_del(&itnim->list_entry);1164 BFA_LOG(KERN_INFO, bfad, bfa_log_level,1165 "ITNIM OFFLINE Target: %d:0:%d "1166 "FCID: %s WWPN: %s\n",1167 im_port->shost->host_no,1168 itnim->scsi_tgt_id,1169 fcid_str, wwpn_str);1170 }1171 break;1172 case ITNIM_STATE_FREE:1173 if (itnim->fc_rport) {1174 fc_rport = itnim->fc_rport;1175 ((struct bfad_itnim_data_s *)1176 fc_rport->dd_data)->itnim = NULL;1177 itnim->fc_rport = NULL;1178 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {1179 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1180 fc_rport->dev_loss_tmo =1181 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;1182 fc_remote_port_delete(fc_rport);1183 spin_lock_irqsave(&bfad->bfad_lock, flags);1184 }1185 list_del(&itnim->list_entry);1186 }1187 1188 kfree(itnim);1189 break;1190 default:1191 WARN_ON(1);1192 break;1193 }1194 1195 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1196}1197 1198/*1199 * Scsi_Host template entry, queue a SCSI command to the BFAD.1200 */1201static int bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd)1202{1203 void (*done)(struct scsi_cmnd *) = scsi_done;1204 struct bfad_im_port_s *im_port =1205 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];1206 struct bfad_s *bfad = im_port->bfad;1207 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;1208 struct bfad_itnim_s *itnim;1209 struct bfa_ioim_s *hal_io;1210 unsigned long flags;1211 int rc;1212 int sg_cnt = 0;1213 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));1214 1215 rc = fc_remote_port_chkready(rport);1216 if (rc) {1217 cmnd->result = rc;1218 done(cmnd);1219 return 0;1220 }1221 1222 if (bfad->bfad_flags & BFAD_EEH_BUSY) {1223 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)1224 cmnd->result = DID_NO_CONNECT << 16;1225 else1226 cmnd->result = DID_REQUEUE << 16;1227 done(cmnd);1228 return 0;1229 }1230 1231 sg_cnt = scsi_dma_map(cmnd);1232 if (sg_cnt < 0)1233 return SCSI_MLQUEUE_HOST_BUSY;1234 1235 spin_lock_irqsave(&bfad->bfad_lock, flags);1236 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {1237 printk(KERN_WARNING1238 "bfad%d, queuecommand %p %x failed, BFA stopped\n",1239 bfad->inst_no, cmnd, cmnd->cmnd[0]);1240 cmnd->result = DID_NO_CONNECT << 16;1241 goto out_fail_cmd;1242 }1243 1244 1245 itnim = itnim_data->itnim;1246 if (!itnim) {1247 cmnd->result = DID_IMM_RETRY << 16;1248 goto out_fail_cmd;1249 }1250 1251 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,1252 itnim->bfa_itnim, sg_cnt);1253 if (!hal_io) {1254 printk(KERN_WARNING "hal_io failure\n");1255 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1256 scsi_dma_unmap(cmnd);1257 return SCSI_MLQUEUE_HOST_BUSY;1258 }1259 1260 cmnd->host_scribble = (char *)hal_io;1261 bfa_ioim_start(hal_io);1262 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1263 1264 return 0;1265 1266out_fail_cmd:1267 spin_unlock_irqrestore(&bfad->bfad_lock, flags);1268 scsi_dma_unmap(cmnd);1269 if (done)1270 done(cmnd);1271 1272 return 0;1273}1274 1275static DEF_SCSI_QCMD(bfad_im_queuecommand)1276 1277void1278bfad_rport_online_wait(struct bfad_s *bfad)1279{1280 int i;1281 int rport_delay = 10;1282 1283 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)1284 && i < bfa_linkup_delay; i++) {1285 set_current_state(TASK_UNINTERRUPTIBLE);1286 schedule_timeout(HZ);1287 }1288 1289 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {1290 rport_delay = rport_delay < bfa_linkup_delay ?1291 rport_delay : bfa_linkup_delay;1292 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)1293 && i < rport_delay; i++) {1294 set_current_state(TASK_UNINTERRUPTIBLE);1295 schedule_timeout(HZ);1296 }1297 1298 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {1299 set_current_state(TASK_UNINTERRUPTIBLE);1300 schedule_timeout(rport_delay * HZ);1301 }1302 }1303}1304 1305int1306bfad_get_linkup_delay(struct bfad_s *bfad)1307{1308 u8 nwwns = 0;1309 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];1310 int linkup_delay;1311 1312 /*1313 * Querying for the boot target port wwns1314 * -- read from boot information in flash.1315 * If nwwns > 0 => boot over SAN and set linkup_delay = 301316 * else => local boot machine set linkup_delay = 01317 */1318 1319 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);1320 1321 if (nwwns > 0)1322 /* If Boot over SAN set linkup_delay = 30sec */1323 linkup_delay = 30;1324 else1325 /* If local boot; no linkup_delay */1326 linkup_delay = 0;1327 1328 return linkup_delay;1329}1330