2 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
3 * Copyright (c) 2014- QLogic Corporation.
7 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License (GPL) Version 2 as
11 * published by the Free Software Foundation
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
20 * bfad_im.c Linux driver IM module.
23 #include <linux/export.h>
29 BFA_TRC_FILE(LDRV, IM);
31 DEFINE_IDR(bfad_im_port_index);
32 struct scsi_transport_template *bfad_im_scsi_transport_template;
33 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
34 static void bfad_im_itnim_work_handler(struct work_struct *work);
35 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
36 static int bfad_im_slave_alloc(struct scsi_device *sdev);
37 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
38 struct bfad_itnim_s *itnim);
41 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
42 enum bfi_ioim_status io_status, u8 scsi_status,
43 int sns_len, u8 *sns_info, s32 residue)
45 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
46 struct bfad_s *bfad = drv;
47 struct bfad_itnim_data_s *itnim_data;
48 struct bfad_itnim_s *itnim;
49 u8 host_status = DID_OK;
53 bfa_trc(bfad, scsi_status);
54 scsi_set_resid(cmnd, 0);
57 bfa_trc(bfad, sns_len);
58 if (sns_len > SCSI_SENSE_BUFFERSIZE)
59 sns_len = SCSI_SENSE_BUFFERSIZE;
60 memcpy(cmnd->sense_buffer, sns_info, sns_len);
64 bfa_trc(bfad, residue);
65 scsi_set_resid(cmnd, residue);
66 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
67 (scsi_bufflen(cmnd) - residue) <
70 host_status = DID_ERROR;
73 cmnd->result = ScsiResult(host_status, scsi_status);
77 case BFI_IOIM_STS_TIMEDOUT:
78 host_status = DID_TIME_OUT;
79 cmnd->result = ScsiResult(host_status, 0);
81 case BFI_IOIM_STS_PATHTOV:
82 host_status = DID_TRANSPORT_DISRUPTED;
83 cmnd->result = ScsiResult(host_status, 0);
86 host_status = DID_ERROR;
87 cmnd->result = ScsiResult(host_status, 0);
90 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
91 if (cmnd->device->host != NULL)
94 cmnd->host_scribble = NULL;
95 bfa_trc(bfad, cmnd->result);
97 itnim_data = cmnd->device->hostdata;
99 itnim = itnim_data->itnim;
100 if (!cmnd->result && itnim &&
101 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
102 /* Queue depth adjustment for good status completion */
103 bfad_ramp_up_qdepth(itnim, cmnd->device);
104 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
106 bfad_handle_qfull(itnim, cmnd->device);
110 cmnd->scsi_done(cmnd);
114 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
116 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
117 struct bfad_itnim_data_s *itnim_data;
118 struct bfad_itnim_s *itnim;
120 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
122 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
123 if (cmnd->device->host != NULL)
124 scsi_dma_unmap(cmnd);
126 cmnd->host_scribble = NULL;
128 /* Queue depth adjustment */
129 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
130 itnim_data = cmnd->device->hostdata;
132 itnim = itnim_data->itnim;
134 bfad_ramp_up_qdepth(itnim, cmnd->device);
138 cmnd->scsi_done(cmnd);
142 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
144 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
145 struct bfad_s *bfad = drv;
147 cmnd->result = ScsiResult(DID_ERROR, 0);
149 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
150 if (cmnd->device->host != NULL)
151 scsi_dma_unmap(cmnd);
153 bfa_trc(bfad, cmnd->result);
154 cmnd->host_scribble = NULL;
158 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
159 enum bfi_tskim_status tsk_status)
161 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
162 wait_queue_head_t *wq;
164 cmnd->SCp.Status |= tsk_status << 1;
165 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
166 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
167 cmnd->SCp.ptr = NULL;
174 * Scsi_Host_template SCSI host template
177 * Scsi_Host template entry, returns BFAD PCI info.
180 bfad_im_info(struct Scsi_Host *shost)
182 static char bfa_buf[256];
183 struct bfad_im_port_s *im_port =
184 (struct bfad_im_port_s *) shost->hostdata[0];
185 struct bfad_s *bfad = im_port->bfad;
187 memset(bfa_buf, 0, sizeof(bfa_buf));
188 snprintf(bfa_buf, sizeof(bfa_buf),
189 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
190 bfad->pci_name, BFAD_DRIVER_VERSION);
196 * Scsi_Host template entry, aborts the specified SCSI command.
198 * Returns: SUCCESS or FAILED.
201 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
203 struct Scsi_Host *shost = cmnd->device->host;
204 struct bfad_im_port_s *im_port =
205 (struct bfad_im_port_s *) shost->hostdata[0];
206 struct bfad_s *bfad = im_port->bfad;
207 struct bfa_ioim_s *hal_io;
212 spin_lock_irqsave(&bfad->bfad_lock, flags);
213 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
215 /* IO has been completed, return success */
219 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
224 bfa_trc(bfad, hal_io->iotag);
225 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
226 "scsi%d: abort cmnd %p iotag %x\n",
227 im_port->shost->host_no, cmnd, hal_io->iotag);
228 (void) bfa_ioim_abort(hal_io);
229 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
231 /* Need to wait until the command get aborted */
233 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
234 set_current_state(TASK_UNINTERRUPTIBLE);
235 schedule_timeout(timeout);
236 if (timeout < 4 * HZ)
240 cmnd->scsi_done(cmnd);
241 bfa_trc(bfad, hal_io->iotag);
242 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
243 "scsi%d: complete abort 0x%p iotag 0x%x\n",
244 im_port->shost->host_no, cmnd, hal_io->iotag);
247 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
252 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
253 struct bfad_itnim_s *itnim)
255 struct bfa_tskim_s *tskim;
256 struct bfa_itnim_s *bfa_itnim;
257 bfa_status_t rc = BFA_STATUS_OK;
258 struct scsi_lun scsilun;
260 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
262 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
263 "target reset, fail to allocate tskim\n");
264 rc = BFA_STATUS_FAILED;
269 * Set host_scribble to NULL to avoid aborting a task command if
272 cmnd->host_scribble = NULL;
273 cmnd->SCp.Status = 0;
274 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
276 * bfa_itnim can be NULL if the port gets disconnected and the bfa
277 * and fcs layers have cleaned up their nexus with the targets and
278 * the same has not been cleaned up by the shim
280 if (bfa_itnim == NULL) {
281 bfa_tskim_free(tskim);
282 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
283 "target reset, bfa_itnim is NULL\n");
284 rc = BFA_STATUS_FAILED;
288 memset(&scsilun, 0, sizeof(scsilun));
289 bfa_tskim_start(tskim, bfa_itnim, scsilun,
290 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
296 * Scsi_Host template entry, resets a LUN and abort its all commands.
298 * Returns: SUCCESS or FAILED.
302 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
304 struct Scsi_Host *shost = cmnd->device->host;
305 struct bfad_im_port_s *im_port =
306 (struct bfad_im_port_s *) shost->hostdata[0];
307 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
308 struct bfad_s *bfad = im_port->bfad;
309 struct bfa_tskim_s *tskim;
310 struct bfad_itnim_s *itnim;
311 struct bfa_itnim_s *bfa_itnim;
312 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
315 enum bfi_tskim_status task_status;
316 struct scsi_lun scsilun;
318 spin_lock_irqsave(&bfad->bfad_lock, flags);
319 itnim = itnim_data->itnim;
321 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
326 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
328 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
329 "LUN reset, fail to allocate tskim");
330 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
336 * Set host_scribble to NULL to avoid aborting a task command
339 cmnd->host_scribble = NULL;
340 cmnd->SCp.ptr = (char *)&wq;
341 cmnd->SCp.Status = 0;
342 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
344 * bfa_itnim can be NULL if the port gets disconnected and the bfa
345 * and fcs layers have cleaned up their nexus with the targets and
346 * the same has not been cleaned up by the shim
348 if (bfa_itnim == NULL) {
349 bfa_tskim_free(tskim);
350 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
351 "lun reset, bfa_itnim is NULL\n");
352 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
356 int_to_scsilun(cmnd->device->lun, &scsilun);
357 bfa_tskim_start(tskim, bfa_itnim, scsilun,
358 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
359 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
361 wait_event(wq, test_bit(IO_DONE_BIT,
362 (unsigned long *)&cmnd->SCp.Status));
364 task_status = cmnd->SCp.Status >> 1;
365 if (task_status != BFI_TSKIM_STS_OK) {
366 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
367 "LUN reset failure, status: %d\n", task_status);
376 * Scsi_Host template entry, resets the target and abort all commands.
379 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
381 struct Scsi_Host *shost = cmnd->device->host;
382 struct scsi_target *starget = scsi_target(cmnd->device);
383 struct bfad_im_port_s *im_port =
384 (struct bfad_im_port_s *) shost->hostdata[0];
385 struct bfad_s *bfad = im_port->bfad;
386 struct bfad_itnim_s *itnim;
388 u32 rc, rtn = FAILED;
389 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
390 enum bfi_tskim_status task_status;
392 spin_lock_irqsave(&bfad->bfad_lock, flags);
393 itnim = bfad_get_itnim(im_port, starget->id);
395 cmnd->SCp.ptr = (char *)&wq;
396 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
397 if (rc == BFA_STATUS_OK) {
398 /* wait target reset to complete */
399 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
400 wait_event(wq, test_bit(IO_DONE_BIT,
401 (unsigned long *)&cmnd->SCp.Status));
402 spin_lock_irqsave(&bfad->bfad_lock, flags);
404 task_status = cmnd->SCp.Status >> 1;
405 if (task_status != BFI_TSKIM_STS_OK)
406 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
407 "target reset failure,"
408 " status: %d\n", task_status);
413 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
419 * Scsi_Host template entry slave_destroy.
422 bfad_im_slave_destroy(struct scsi_device *sdev)
424 sdev->hostdata = NULL;
429 * BFA FCS itnim callbacks
433 * BFA FCS itnim alloc callback, after successful PRLI
437 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
438 struct bfad_itnim_s **itnim_drv)
440 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
441 if (*itnim_drv == NULL)
444 (*itnim_drv)->im = bfad->im;
445 *itnim = &(*itnim_drv)->fcs_itnim;
446 (*itnim_drv)->state = ITNIM_STATE_NONE;
449 * Initiaze the itnim_work
451 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
452 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
457 * BFA FCS itnim free callback.
458 * Context: Interrupt. bfad_lock is held
461 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
463 struct bfad_port_s *port;
466 char wwpn_str[32], fcid_str[16];
467 struct bfad_im_s *im = itnim_drv->im;
469 /* online to free state transtion should not happen */
470 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
472 itnim_drv->queue_work = 1;
473 /* offline request is not yet done, use the same request to free */
474 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
475 itnim_drv->queue_work = 0;
477 itnim_drv->state = ITNIM_STATE_FREE;
478 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
479 itnim_drv->im_port = port->im_port;
480 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
481 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
482 wwn2str(wwpn_str, wwpn);
483 fcid2str(fcid_str, fcid);
484 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
485 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
486 port->im_port->shost->host_no,
489 /* ITNIM processing */
490 if (itnim_drv->queue_work)
491 queue_work(im->drv_workq, &itnim_drv->itnim_work);
495 * BFA FCS itnim online callback.
496 * Context: Interrupt. bfad_lock is held
499 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
501 struct bfad_port_s *port;
502 struct bfad_im_s *im = itnim_drv->im;
504 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
505 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
506 itnim_drv->state = ITNIM_STATE_ONLINE;
507 itnim_drv->queue_work = 1;
508 itnim_drv->im_port = port->im_port;
510 /* ITNIM processing */
511 if (itnim_drv->queue_work)
512 queue_work(im->drv_workq, &itnim_drv->itnim_work);
516 * BFA FCS itnim offline callback.
517 * Context: Interrupt. bfad_lock is held
520 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
522 struct bfad_port_s *port;
524 struct bfad_im_s *im = itnim_drv->im;
526 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
528 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
529 (port->flags & BFAD_PORT_DELETE)) {
530 itnim_drv->state = ITNIM_STATE_OFFLINE;
533 itnim_drv->im_port = port->im_port;
534 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
535 itnim_drv->queue_work = 1;
537 /* ITNIM processing */
538 if (itnim_drv->queue_work)
539 queue_work(im->drv_workq, &itnim_drv->itnim_work);
543 * Allocate a Scsi_Host for a port.
546 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
551 mutex_lock(&bfad_mutex);
552 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
554 mutex_unlock(&bfad_mutex);
555 printk(KERN_WARNING "idr_alloc failure\n");
558 im_port->idr_id = error;
559 mutex_unlock(&bfad_mutex);
561 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
562 if (!im_port->shost) {
567 im_port->shost->hostdata[0] = (unsigned long)im_port;
568 im_port->shost->unique_id = im_port->idr_id;
569 im_port->shost->this_id = -1;
570 im_port->shost->max_id = MAX_FCP_TARGET;
571 im_port->shost->max_lun = MAX_FCP_LUN;
572 im_port->shost->max_cmd_len = 16;
573 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
574 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
575 im_port->shost->transportt = bfad_im_scsi_transport_template;
577 im_port->shost->transportt =
578 bfad_im_scsi_vport_transport_template;
580 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
582 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
589 scsi_host_put(im_port->shost);
590 im_port->shost = NULL;
592 mutex_lock(&bfad_mutex);
593 idr_remove(&bfad_im_port_index, im_port->idr_id);
594 mutex_unlock(&bfad_mutex);
600 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
602 bfa_trc(bfad, bfad->inst_no);
603 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
604 im_port->shost->host_no);
606 fc_remove_host(im_port->shost);
608 scsi_remove_host(im_port->shost);
609 scsi_host_put(im_port->shost);
611 mutex_lock(&bfad_mutex);
612 idr_remove(&bfad_im_port_index, im_port->idr_id);
613 mutex_unlock(&bfad_mutex);
617 bfad_im_port_delete_handler(struct work_struct *work)
619 struct bfad_im_port_s *im_port =
620 container_of(work, struct bfad_im_port_s, port_delete_work);
622 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
623 im_port->flags |= BFAD_PORT_DELETE;
624 fc_vport_terminate(im_port->fc_vport);
629 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
631 int rc = BFA_STATUS_OK;
632 struct bfad_im_port_s *im_port;
634 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
635 if (im_port == NULL) {
636 rc = BFA_STATUS_ENOMEM;
639 port->im_port = im_port;
640 im_port->port = port;
641 im_port->bfad = bfad;
643 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
644 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
645 INIT_LIST_HEAD(&im_port->binding_list);
652 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
654 struct bfad_im_port_s *im_port = port->im_port;
656 queue_work(bfad->im->drv_workq,
657 &im_port->port_delete_work);
661 bfad_im_port_clean(struct bfad_im_port_s *im_port)
663 struct bfad_fcp_binding *bp, *bp_new;
665 struct bfad_s *bfad = im_port->bfad;
667 spin_lock_irqsave(&bfad->bfad_lock, flags);
668 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
670 list_del(&bp->list_entry);
674 /* the itnim_mapped_list must be empty at this time */
675 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
677 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
680 static void bfad_aen_im_notify_handler(struct work_struct *work)
682 struct bfad_im_s *im =
683 container_of(work, struct bfad_im_s, aen_im_notify_work);
684 struct bfa_aen_entry_s *aen_entry;
685 struct bfad_s *bfad = im->bfad;
686 struct Scsi_Host *shost = bfad->pport.im_port->shost;
690 while (!list_empty(&bfad->active_aen_q)) {
691 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
692 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
693 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
694 event_data = (char *)aen_entry + sizeof(struct list_head);
695 fc_host_post_vendor_event(shost, fc_get_event_number(),
696 sizeof(struct bfa_aen_entry_s) -
697 sizeof(struct list_head),
698 (char *)event_data, BFAD_NL_VENDOR_ID);
699 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
700 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
701 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
706 bfad_im_probe(struct bfad_s *bfad)
708 struct bfad_im_s *im;
710 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
712 return BFA_STATUS_ENOMEM;
717 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
719 return BFA_STATUS_FAILED;
722 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
723 return BFA_STATUS_OK;
727 bfad_im_probe_undo(struct bfad_s *bfad)
730 bfad_destroy_workq(bfad->im);
737 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
739 struct scsi_host_template *sht;
741 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
742 sht = &bfad_im_scsi_host_template;
744 sht = &bfad_im_vport_template;
746 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
747 sht->max_sectors = max_xfer_size << 1;
749 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
751 return scsi_host_alloc(sht, sizeof(unsigned long));
755 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
757 if (!(im_port->flags & BFAD_PORT_DELETE))
758 flush_workqueue(bfad->im->drv_workq);
759 bfad_im_scsi_host_free(im_port->bfad, im_port);
760 bfad_im_port_clean(im_port);
765 bfad_destroy_workq(struct bfad_im_s *im)
767 if (im && im->drv_workq) {
768 flush_workqueue(im->drv_workq);
769 destroy_workqueue(im->drv_workq);
770 im->drv_workq = NULL;
775 bfad_thread_workq(struct bfad_s *bfad)
777 struct bfad_im_s *im = bfad->im;
780 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
782 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
784 return BFA_STATUS_FAILED;
786 return BFA_STATUS_OK;
790 * Scsi_Host template entry.
793 * OS entry point to adjust the queue_depths on a per-device basis.
794 * Called once per device during the bus scan.
795 * Return non-zero if fails.
798 bfad_im_slave_configure(struct scsi_device *sdev)
800 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
804 struct scsi_host_template bfad_im_scsi_host_template = {
805 .module = THIS_MODULE,
806 .name = BFAD_DRIVER_NAME,
807 .info = bfad_im_info,
808 .queuecommand = bfad_im_queuecommand,
809 .eh_timed_out = fc_eh_timed_out,
810 .eh_abort_handler = bfad_im_abort_handler,
811 .eh_device_reset_handler = bfad_im_reset_lun_handler,
812 .eh_target_reset_handler = bfad_im_reset_target_handler,
814 .slave_alloc = bfad_im_slave_alloc,
815 .slave_configure = bfad_im_slave_configure,
816 .slave_destroy = bfad_im_slave_destroy,
819 .sg_tablesize = BFAD_IO_MAX_SGE,
821 .use_clustering = ENABLE_CLUSTERING,
822 .shost_attrs = bfad_im_host_attrs,
823 .max_sectors = BFAD_MAX_SECTORS,
824 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
827 struct scsi_host_template bfad_im_vport_template = {
828 .module = THIS_MODULE,
829 .name = BFAD_DRIVER_NAME,
830 .info = bfad_im_info,
831 .queuecommand = bfad_im_queuecommand,
832 .eh_timed_out = fc_eh_timed_out,
833 .eh_abort_handler = bfad_im_abort_handler,
834 .eh_device_reset_handler = bfad_im_reset_lun_handler,
835 .eh_target_reset_handler = bfad_im_reset_target_handler,
837 .slave_alloc = bfad_im_slave_alloc,
838 .slave_configure = bfad_im_slave_configure,
839 .slave_destroy = bfad_im_slave_destroy,
842 .sg_tablesize = BFAD_IO_MAX_SGE,
844 .use_clustering = ENABLE_CLUSTERING,
845 .shost_attrs = bfad_im_vport_attrs,
846 .max_sectors = BFAD_MAX_SECTORS,
850 bfad_im_module_init(void)
852 bfad_im_scsi_transport_template =
853 fc_attach_transport(&bfad_im_fc_function_template);
854 if (!bfad_im_scsi_transport_template)
855 return BFA_STATUS_ENOMEM;
857 bfad_im_scsi_vport_transport_template =
858 fc_attach_transport(&bfad_im_vport_fc_function_template);
859 if (!bfad_im_scsi_vport_transport_template) {
860 fc_release_transport(bfad_im_scsi_transport_template);
861 return BFA_STATUS_ENOMEM;
864 return BFA_STATUS_OK;
868 bfad_im_module_exit(void)
870 if (bfad_im_scsi_transport_template)
871 fc_release_transport(bfad_im_scsi_transport_template);
873 if (bfad_im_scsi_vport_transport_template)
874 fc_release_transport(bfad_im_scsi_vport_transport_template);
876 idr_destroy(&bfad_im_port_index);
880 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
882 struct scsi_device *tmp_sdev;
884 if (((jiffies - itnim->last_ramp_up_time) >
885 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
886 ((jiffies - itnim->last_queue_full_time) >
887 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
888 shost_for_each_device(tmp_sdev, sdev->host) {
889 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
890 if (tmp_sdev->id != sdev->id)
892 scsi_change_queue_depth(tmp_sdev,
893 tmp_sdev->queue_depth + 1);
895 itnim->last_ramp_up_time = jiffies;
902 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
904 struct scsi_device *tmp_sdev;
906 itnim->last_queue_full_time = jiffies;
908 shost_for_each_device(tmp_sdev, sdev->host) {
909 if (tmp_sdev->id != sdev->id)
911 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
915 struct bfad_itnim_s *
916 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
918 struct bfad_itnim_s *itnim = NULL;
920 /* Search the mapped list for this target ID */
921 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
922 if (id == itnim->scsi_tgt_id)
930 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
931 * Has the logic to query the LUN Mask database to check if this LUN needs to
932 * be made visible to the SCSI mid-layer or not.
934 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
935 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
938 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
939 struct fc_rport *rport)
941 struct bfad_itnim_data_s *itnim_data =
942 (struct bfad_itnim_data_s *) rport->dd_data;
943 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
944 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
945 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
946 int i = 0, ret = -ENXIO;
948 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
949 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
950 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
951 lun_list[i].rp_tag == bfa_rport->rport_tag &&
952 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
961 * Scsi_Host template entry slave_alloc
964 bfad_im_slave_alloc(struct scsi_device *sdev)
966 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
967 struct bfad_itnim_data_s *itnim_data;
970 if (!rport || fc_remote_port_chkready(rport))
973 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
974 bfa = itnim_data->itnim->bfa_itnim->bfa;
976 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
978 * We should not mask LUN 0 - since this will translate
979 * to no LUN / TARGET for SCSI ml resulting no scan.
981 if (sdev->lun == 0) {
982 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
988 * Query LUN Mask configuration - to expose this LUN
989 * to the SCSI mid-layer or to mask it.
991 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
996 sdev->hostdata = rport->dd_data;
1002 bfad_im_supported_speeds(struct bfa_s *bfa)
1004 struct bfa_ioc_attr_s *ioc_attr;
1005 u32 supported_speed = 0;
1007 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1011 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1012 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1013 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1014 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1015 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1016 if (ioc_attr->adapter_attr.is_mezz) {
1017 supported_speed |= FC_PORTSPEED_8GBIT |
1018 FC_PORTSPEED_4GBIT |
1019 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1021 supported_speed |= FC_PORTSPEED_8GBIT |
1022 FC_PORTSPEED_4GBIT |
1025 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1026 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1028 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1029 supported_speed |= FC_PORTSPEED_10GBIT;
1032 return supported_speed;
1036 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1038 struct Scsi_Host *host = im_port->shost;
1039 struct bfad_s *bfad = im_port->bfad;
1040 struct bfad_port_s *port = im_port->port;
1041 char symname[BFA_SYMNAME_MAXLEN];
1042 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1044 fc_host_node_name(host) =
1045 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1046 fc_host_port_name(host) =
1047 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1048 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1050 fc_host_supported_classes(host) = FC_COS_CLASS3;
1052 memset(fc_host_supported_fc4s(host), 0,
1053 sizeof(fc_host_supported_fc4s(host)));
1054 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1055 /* For FCP type 0x08 */
1056 fc_host_supported_fc4s(host)[2] = 1;
1057 /* For fibre channel services type 0x20 */
1058 fc_host_supported_fc4s(host)[7] = 1;
1060 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1061 BFA_SYMNAME_MAXLEN);
1062 sprintf(fc_host_symbolic_name(host), "%s", symname);
1064 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1065 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1069 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1071 struct fc_rport_identifiers rport_ids;
1072 struct fc_rport *fc_rport;
1073 struct bfad_itnim_data_s *itnim_data;
1075 rport_ids.node_name =
1076 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1077 rport_ids.port_name =
1078 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1080 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1081 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1083 itnim->fc_rport = fc_rport =
1084 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1089 fc_rport->maxframe_size =
1090 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1091 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1093 itnim_data = fc_rport->dd_data;
1094 itnim_data->itnim = itnim;
1096 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1098 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1099 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1101 if ((fc_rport->scsi_target_id != -1)
1102 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1103 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1105 itnim->channel = fc_rport->channel;
1111 * Work queue handler using FC transport service
1115 bfad_im_itnim_work_handler(struct work_struct *work)
1117 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1119 struct bfad_im_s *im = itnim->im;
1120 struct bfad_s *bfad = im->bfad;
1121 struct bfad_im_port_s *im_port;
1122 unsigned long flags;
1123 struct fc_rport *fc_rport;
1126 char wwpn_str[32], fcid_str[16];
1128 spin_lock_irqsave(&bfad->bfad_lock, flags);
1129 im_port = itnim->im_port;
1130 bfa_trc(bfad, itnim->state);
1131 switch (itnim->state) {
1132 case ITNIM_STATE_ONLINE:
1133 if (!itnim->fc_rport) {
1134 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1135 bfad_im_fc_rport_add(im_port, itnim);
1136 spin_lock_irqsave(&bfad->bfad_lock, flags);
1137 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1138 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1139 wwn2str(wwpn_str, wwpn);
1140 fcid2str(fcid_str, fcid);
1141 list_add_tail(&itnim->list_entry,
1142 &im_port->itnim_mapped_list);
1143 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1144 "ITNIM ONLINE Target: %d:0:%d "
1145 "FCID: %s WWPN: %s\n",
1146 im_port->shost->host_no,
1148 fcid_str, wwpn_str);
1151 "%s: itnim %llx is already in online state\n",
1153 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1157 case ITNIM_STATE_OFFLINE_PENDING:
1158 itnim->state = ITNIM_STATE_OFFLINE;
1159 if (itnim->fc_rport) {
1160 fc_rport = itnim->fc_rport;
1161 ((struct bfad_itnim_data_s *)
1162 fc_rport->dd_data)->itnim = NULL;
1163 itnim->fc_rport = NULL;
1164 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1165 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1166 fc_rport->dev_loss_tmo =
1167 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1168 fc_remote_port_delete(fc_rport);
1169 spin_lock_irqsave(&bfad->bfad_lock, flags);
1171 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1172 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1173 wwn2str(wwpn_str, wwpn);
1174 fcid2str(fcid_str, fcid);
1175 list_del(&itnim->list_entry);
1176 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1177 "ITNIM OFFLINE Target: %d:0:%d "
1178 "FCID: %s WWPN: %s\n",
1179 im_port->shost->host_no,
1181 fcid_str, wwpn_str);
1184 case ITNIM_STATE_FREE:
1185 if (itnim->fc_rport) {
1186 fc_rport = itnim->fc_rport;
1187 ((struct bfad_itnim_data_s *)
1188 fc_rport->dd_data)->itnim = NULL;
1189 itnim->fc_rport = NULL;
1190 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1191 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1192 fc_rport->dev_loss_tmo =
1193 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1194 fc_remote_port_delete(fc_rport);
1195 spin_lock_irqsave(&bfad->bfad_lock, flags);
1197 list_del(&itnim->list_entry);
1207 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1211 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1214 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1216 struct bfad_im_port_s *im_port =
1217 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1218 struct bfad_s *bfad = im_port->bfad;
1219 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1220 struct bfad_itnim_s *itnim;
1221 struct bfa_ioim_s *hal_io;
1222 unsigned long flags;
1225 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1227 rc = fc_remote_port_chkready(rport);
1234 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1235 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1236 cmnd->result = DID_NO_CONNECT << 16;
1238 cmnd->result = DID_REQUEUE << 16;
1243 sg_cnt = scsi_dma_map(cmnd);
1245 return SCSI_MLQUEUE_HOST_BUSY;
1247 cmnd->scsi_done = done;
1249 spin_lock_irqsave(&bfad->bfad_lock, flags);
1250 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1252 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1253 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1254 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1259 itnim = itnim_data->itnim;
1261 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1265 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1266 itnim->bfa_itnim, sg_cnt);
1268 printk(KERN_WARNING "hal_io failure\n");
1269 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1270 scsi_dma_unmap(cmnd);
1271 return SCSI_MLQUEUE_HOST_BUSY;
1274 cmnd->host_scribble = (char *)hal_io;
1275 bfa_ioim_start(hal_io);
1276 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1281 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1282 scsi_dma_unmap(cmnd);
1289 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1292 bfad_rport_online_wait(struct bfad_s *bfad)
1295 int rport_delay = 10;
1297 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1298 && i < bfa_linkup_delay; i++) {
1299 set_current_state(TASK_UNINTERRUPTIBLE);
1300 schedule_timeout(HZ);
1303 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1304 rport_delay = rport_delay < bfa_linkup_delay ?
1305 rport_delay : bfa_linkup_delay;
1306 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1307 && i < rport_delay; i++) {
1308 set_current_state(TASK_UNINTERRUPTIBLE);
1309 schedule_timeout(HZ);
1312 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1313 set_current_state(TASK_UNINTERRUPTIBLE);
1314 schedule_timeout(rport_delay * HZ);
1320 bfad_get_linkup_delay(struct bfad_s *bfad)
1323 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1327 * Querying for the boot target port wwns
1328 * -- read from boot information in flash.
1329 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1330 * else => local boot machine set linkup_delay = 0
1333 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1336 /* If Boot over SAN set linkup_delay = 30sec */
1339 /* If local boot; no linkup_delay */
1342 return linkup_delay;