2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
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
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.
19 * bfad_im.c Linux driver IM module.
22 #include <linux/export.h>
28 BFA_TRC_FILE(LDRV, IM);
30 DEFINE_IDR(bfad_im_port_index);
31 struct scsi_transport_template *bfad_im_scsi_transport_template;
32 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
33 static void bfad_im_itnim_work_handler(struct work_struct *work);
34 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
35 static int bfad_im_slave_alloc(struct scsi_device *sdev);
36 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
37 struct bfad_itnim_s *itnim);
40 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
41 enum bfi_ioim_status io_status, u8 scsi_status,
42 int sns_len, u8 *sns_info, s32 residue)
44 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
45 struct bfad_s *bfad = drv;
46 struct bfad_itnim_data_s *itnim_data;
47 struct bfad_itnim_s *itnim;
48 u8 host_status = DID_OK;
52 bfa_trc(bfad, scsi_status);
53 scsi_set_resid(cmnd, 0);
56 bfa_trc(bfad, sns_len);
57 if (sns_len > SCSI_SENSE_BUFFERSIZE)
58 sns_len = SCSI_SENSE_BUFFERSIZE;
59 memcpy(cmnd->sense_buffer, sns_info, sns_len);
63 bfa_trc(bfad, residue);
64 scsi_set_resid(cmnd, residue);
65 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
66 (scsi_bufflen(cmnd) - residue) <
69 host_status = DID_ERROR;
72 cmnd->result = ScsiResult(host_status, scsi_status);
76 case BFI_IOIM_STS_TIMEDOUT:
77 host_status = DID_TIME_OUT;
78 cmnd->result = ScsiResult(host_status, 0);
80 case BFI_IOIM_STS_PATHTOV:
81 host_status = DID_TRANSPORT_DISRUPTED;
82 cmnd->result = ScsiResult(host_status, 0);
85 host_status = DID_ERROR;
86 cmnd->result = ScsiResult(host_status, 0);
89 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
90 if (cmnd->device->host != NULL)
93 cmnd->host_scribble = NULL;
94 bfa_trc(bfad, cmnd->result);
96 itnim_data = cmnd->device->hostdata;
98 itnim = itnim_data->itnim;
99 if (!cmnd->result && itnim &&
100 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
101 /* Queue depth adjustment for good status completion */
102 bfad_ramp_up_qdepth(itnim, cmnd->device);
103 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
105 bfad_handle_qfull(itnim, cmnd->device);
109 cmnd->scsi_done(cmnd);
113 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
115 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
116 struct bfad_itnim_data_s *itnim_data;
117 struct bfad_itnim_s *itnim;
119 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
121 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
122 if (cmnd->device->host != NULL)
123 scsi_dma_unmap(cmnd);
125 cmnd->host_scribble = NULL;
127 /* Queue depth adjustment */
128 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
129 itnim_data = cmnd->device->hostdata;
131 itnim = itnim_data->itnim;
133 bfad_ramp_up_qdepth(itnim, cmnd->device);
137 cmnd->scsi_done(cmnd);
141 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
143 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
144 struct bfad_s *bfad = drv;
146 cmnd->result = ScsiResult(DID_ERROR, 0);
148 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
149 if (cmnd->device->host != NULL)
150 scsi_dma_unmap(cmnd);
152 bfa_trc(bfad, cmnd->result);
153 cmnd->host_scribble = NULL;
157 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
158 enum bfi_tskim_status tsk_status)
160 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
161 wait_queue_head_t *wq;
163 cmnd->SCp.Status |= tsk_status << 1;
164 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
165 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
166 cmnd->SCp.ptr = NULL;
173 * Scsi_Host_template SCSI host template
176 * Scsi_Host template entry, returns BFAD PCI info.
179 bfad_im_info(struct Scsi_Host *shost)
181 static char bfa_buf[256];
182 struct bfad_im_port_s *im_port =
183 (struct bfad_im_port_s *) shost->hostdata[0];
184 struct bfad_s *bfad = im_port->bfad;
186 memset(bfa_buf, 0, sizeof(bfa_buf));
187 snprintf(bfa_buf, sizeof(bfa_buf),
188 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
189 bfad->pci_name, BFAD_DRIVER_VERSION);
195 * Scsi_Host template entry, aborts the specified SCSI command.
197 * Returns: SUCCESS or FAILED.
200 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
202 struct Scsi_Host *shost = cmnd->device->host;
203 struct bfad_im_port_s *im_port =
204 (struct bfad_im_port_s *) shost->hostdata[0];
205 struct bfad_s *bfad = im_port->bfad;
206 struct bfa_ioim_s *hal_io;
211 spin_lock_irqsave(&bfad->bfad_lock, flags);
212 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
214 /* IO has been completed, return success */
218 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
223 bfa_trc(bfad, hal_io->iotag);
224 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
225 "scsi%d: abort cmnd %p iotag %x\n",
226 im_port->shost->host_no, cmnd, hal_io->iotag);
227 (void) bfa_ioim_abort(hal_io);
228 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
230 /* Need to wait until the command get aborted */
232 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
233 set_current_state(TASK_UNINTERRUPTIBLE);
234 schedule_timeout(timeout);
235 if (timeout < 4 * HZ)
239 cmnd->scsi_done(cmnd);
240 bfa_trc(bfad, hal_io->iotag);
241 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
242 "scsi%d: complete abort 0x%p iotag 0x%x\n",
243 im_port->shost->host_no, cmnd, hal_io->iotag);
246 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
251 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
252 struct bfad_itnim_s *itnim)
254 struct bfa_tskim_s *tskim;
255 struct bfa_itnim_s *bfa_itnim;
256 bfa_status_t rc = BFA_STATUS_OK;
257 struct scsi_lun scsilun;
259 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
261 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
262 "target reset, fail to allocate tskim\n");
263 rc = BFA_STATUS_FAILED;
268 * Set host_scribble to NULL to avoid aborting a task command if
271 cmnd->host_scribble = NULL;
272 cmnd->SCp.Status = 0;
273 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
274 memset(&scsilun, 0, sizeof(scsilun));
275 bfa_tskim_start(tskim, bfa_itnim, scsilun,
276 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
282 * Scsi_Host template entry, resets a LUN and abort its all commands.
284 * Returns: SUCCESS or FAILED.
288 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
290 struct Scsi_Host *shost = cmnd->device->host;
291 struct bfad_im_port_s *im_port =
292 (struct bfad_im_port_s *) shost->hostdata[0];
293 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
294 struct bfad_s *bfad = im_port->bfad;
295 struct bfa_tskim_s *tskim;
296 struct bfad_itnim_s *itnim;
297 struct bfa_itnim_s *bfa_itnim;
298 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
301 enum bfi_tskim_status task_status;
302 struct scsi_lun scsilun;
304 spin_lock_irqsave(&bfad->bfad_lock, flags);
305 itnim = itnim_data->itnim;
307 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
312 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
314 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
315 "LUN reset, fail to allocate tskim");
316 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
322 * Set host_scribble to NULL to avoid aborting a task command
325 cmnd->host_scribble = NULL;
326 cmnd->SCp.ptr = (char *)&wq;
327 cmnd->SCp.Status = 0;
328 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
329 int_to_scsilun(cmnd->device->lun, &scsilun);
330 bfa_tskim_start(tskim, bfa_itnim, scsilun,
331 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
332 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
334 wait_event(wq, test_bit(IO_DONE_BIT,
335 (unsigned long *)&cmnd->SCp.Status));
337 task_status = cmnd->SCp.Status >> 1;
338 if (task_status != BFI_TSKIM_STS_OK) {
339 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
340 "LUN reset failure, status: %d\n", task_status);
349 * Scsi_Host template entry, resets the bus and abort all commands.
352 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
354 struct Scsi_Host *shost = cmnd->device->host;
355 struct bfad_im_port_s *im_port =
356 (struct bfad_im_port_s *) shost->hostdata[0];
357 struct bfad_s *bfad = im_port->bfad;
358 struct bfad_itnim_s *itnim;
360 u32 i, rc, err_cnt = 0;
361 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
362 enum bfi_tskim_status task_status;
364 spin_lock_irqsave(&bfad->bfad_lock, flags);
365 for (i = 0; i < MAX_FCP_TARGET; i++) {
366 itnim = bfad_get_itnim(im_port, i);
368 cmnd->SCp.ptr = (char *)&wq;
369 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
370 if (rc != BFA_STATUS_OK) {
375 /* wait target reset to complete */
376 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
377 wait_event(wq, test_bit(IO_DONE_BIT,
378 (unsigned long *)&cmnd->SCp.Status));
379 spin_lock_irqsave(&bfad->bfad_lock, flags);
381 task_status = cmnd->SCp.Status >> 1;
382 if (task_status != BFI_TSKIM_STS_OK) {
383 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
384 "target reset failure,"
385 " status: %d\n", task_status);
390 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
399 * Scsi_Host template entry slave_destroy.
402 bfad_im_slave_destroy(struct scsi_device *sdev)
404 sdev->hostdata = NULL;
409 * BFA FCS itnim callbacks
413 * BFA FCS itnim alloc callback, after successful PRLI
417 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
418 struct bfad_itnim_s **itnim_drv)
420 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
421 if (*itnim_drv == NULL)
424 (*itnim_drv)->im = bfad->im;
425 *itnim = &(*itnim_drv)->fcs_itnim;
426 (*itnim_drv)->state = ITNIM_STATE_NONE;
429 * Initiaze the itnim_work
431 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
432 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
436 * BFA FCS itnim free callback.
437 * Context: Interrupt. bfad_lock is held
440 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
442 struct bfad_port_s *port;
445 char wwpn_str[32], fcid_str[16];
446 struct bfad_im_s *im = itnim_drv->im;
448 /* online to free state transtion should not happen */
449 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
451 itnim_drv->queue_work = 1;
452 /* offline request is not yet done, use the same request to free */
453 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
454 itnim_drv->queue_work = 0;
456 itnim_drv->state = ITNIM_STATE_FREE;
457 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
458 itnim_drv->im_port = port->im_port;
459 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
460 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
461 wwn2str(wwpn_str, wwpn);
462 fcid2str(fcid_str, fcid);
463 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
464 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
465 port->im_port->shost->host_no,
468 /* ITNIM processing */
469 if (itnim_drv->queue_work)
470 queue_work(im->drv_workq, &itnim_drv->itnim_work);
474 * BFA FCS itnim online callback.
475 * Context: Interrupt. bfad_lock is held
478 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
480 struct bfad_port_s *port;
481 struct bfad_im_s *im = itnim_drv->im;
483 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
484 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
485 itnim_drv->state = ITNIM_STATE_ONLINE;
486 itnim_drv->queue_work = 1;
487 itnim_drv->im_port = port->im_port;
489 /* ITNIM processing */
490 if (itnim_drv->queue_work)
491 queue_work(im->drv_workq, &itnim_drv->itnim_work);
495 * BFA FCS itnim offline callback.
496 * Context: Interrupt. bfad_lock is held
499 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
501 struct bfad_port_s *port;
503 struct bfad_im_s *im = itnim_drv->im;
505 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
507 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
508 (port->flags & BFAD_PORT_DELETE)) {
509 itnim_drv->state = ITNIM_STATE_OFFLINE;
512 itnim_drv->im_port = port->im_port;
513 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
514 itnim_drv->queue_work = 1;
516 /* ITNIM processing */
517 if (itnim_drv->queue_work)
518 queue_work(im->drv_workq, &itnim_drv->itnim_work);
522 * Allocate a Scsi_Host for a port.
525 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
530 mutex_lock(&bfad_mutex);
531 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
533 mutex_unlock(&bfad_mutex);
534 printk(KERN_WARNING "idr_alloc failure\n");
537 im_port->idr_id = error;
538 mutex_unlock(&bfad_mutex);
540 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
541 if (!im_port->shost) {
546 im_port->shost->hostdata[0] = (unsigned long)im_port;
547 im_port->shost->unique_id = im_port->idr_id;
548 im_port->shost->this_id = -1;
549 im_port->shost->max_id = MAX_FCP_TARGET;
550 im_port->shost->max_lun = MAX_FCP_LUN;
551 im_port->shost->max_cmd_len = 16;
552 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
553 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
554 im_port->shost->transportt = bfad_im_scsi_transport_template;
556 im_port->shost->transportt =
557 bfad_im_scsi_vport_transport_template;
559 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
561 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
568 scsi_host_put(im_port->shost);
569 im_port->shost = NULL;
571 mutex_lock(&bfad_mutex);
572 idr_remove(&bfad_im_port_index, im_port->idr_id);
573 mutex_unlock(&bfad_mutex);
579 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
581 bfa_trc(bfad, bfad->inst_no);
582 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
583 im_port->shost->host_no);
585 fc_remove_host(im_port->shost);
587 scsi_remove_host(im_port->shost);
588 scsi_host_put(im_port->shost);
590 mutex_lock(&bfad_mutex);
591 idr_remove(&bfad_im_port_index, im_port->idr_id);
592 mutex_unlock(&bfad_mutex);
596 bfad_im_port_delete_handler(struct work_struct *work)
598 struct bfad_im_port_s *im_port =
599 container_of(work, struct bfad_im_port_s, port_delete_work);
601 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
602 im_port->flags |= BFAD_PORT_DELETE;
603 fc_vport_terminate(im_port->fc_vport);
608 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
610 int rc = BFA_STATUS_OK;
611 struct bfad_im_port_s *im_port;
613 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
614 if (im_port == NULL) {
615 rc = BFA_STATUS_ENOMEM;
618 port->im_port = im_port;
619 im_port->port = port;
620 im_port->bfad = bfad;
622 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
623 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
624 INIT_LIST_HEAD(&im_port->binding_list);
631 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
633 struct bfad_im_port_s *im_port = port->im_port;
635 queue_work(bfad->im->drv_workq,
636 &im_port->port_delete_work);
640 bfad_im_port_clean(struct bfad_im_port_s *im_port)
642 struct bfad_fcp_binding *bp, *bp_new;
644 struct bfad_s *bfad = im_port->bfad;
646 spin_lock_irqsave(&bfad->bfad_lock, flags);
647 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
649 list_del(&bp->list_entry);
653 /* the itnim_mapped_list must be empty at this time */
654 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
656 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
659 static void bfad_aen_im_notify_handler(struct work_struct *work)
661 struct bfad_im_s *im =
662 container_of(work, struct bfad_im_s, aen_im_notify_work);
663 struct bfa_aen_entry_s *aen_entry;
664 struct bfad_s *bfad = im->bfad;
665 struct Scsi_Host *shost = bfad->pport.im_port->shost;
669 while (!list_empty(&bfad->active_aen_q)) {
670 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
671 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
672 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
673 event_data = (char *)aen_entry + sizeof(struct list_head);
674 fc_host_post_vendor_event(shost, fc_get_event_number(),
675 sizeof(struct bfa_aen_entry_s) -
676 sizeof(struct list_head),
677 (char *)event_data, BFAD_NL_VENDOR_ID);
678 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
679 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
680 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
685 bfad_im_probe(struct bfad_s *bfad)
687 struct bfad_im_s *im;
689 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
691 return BFA_STATUS_ENOMEM;
696 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
698 return BFA_STATUS_FAILED;
701 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
702 return BFA_STATUS_OK;
706 bfad_im_probe_undo(struct bfad_s *bfad)
709 bfad_destroy_workq(bfad->im);
716 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
718 struct scsi_host_template *sht;
720 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
721 sht = &bfad_im_scsi_host_template;
723 sht = &bfad_im_vport_template;
725 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
726 sht->max_sectors = max_xfer_size << 1;
728 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
730 return scsi_host_alloc(sht, sizeof(unsigned long));
734 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
736 if (!(im_port->flags & BFAD_PORT_DELETE))
737 flush_workqueue(bfad->im->drv_workq);
738 bfad_im_scsi_host_free(im_port->bfad, im_port);
739 bfad_im_port_clean(im_port);
744 bfad_destroy_workq(struct bfad_im_s *im)
746 if (im && im->drv_workq) {
747 flush_workqueue(im->drv_workq);
748 destroy_workqueue(im->drv_workq);
749 im->drv_workq = NULL;
754 bfad_thread_workq(struct bfad_s *bfad)
756 struct bfad_im_s *im = bfad->im;
759 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
761 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
763 return BFA_STATUS_FAILED;
765 return BFA_STATUS_OK;
769 * Scsi_Host template entry.
772 * OS entry point to adjust the queue_depths on a per-device basis.
773 * Called once per device during the bus scan.
774 * Return non-zero if fails.
777 bfad_im_slave_configure(struct scsi_device *sdev)
779 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
783 struct scsi_host_template bfad_im_scsi_host_template = {
784 .module = THIS_MODULE,
785 .name = BFAD_DRIVER_NAME,
786 .info = bfad_im_info,
787 .queuecommand = bfad_im_queuecommand,
788 .eh_abort_handler = bfad_im_abort_handler,
789 .eh_device_reset_handler = bfad_im_reset_lun_handler,
790 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
792 .slave_alloc = bfad_im_slave_alloc,
793 .slave_configure = bfad_im_slave_configure,
794 .slave_destroy = bfad_im_slave_destroy,
797 .sg_tablesize = BFAD_IO_MAX_SGE,
799 .use_clustering = ENABLE_CLUSTERING,
800 .shost_attrs = bfad_im_host_attrs,
801 .max_sectors = BFAD_MAX_SECTORS,
802 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
806 struct scsi_host_template bfad_im_vport_template = {
807 .module = THIS_MODULE,
808 .name = BFAD_DRIVER_NAME,
809 .info = bfad_im_info,
810 .queuecommand = bfad_im_queuecommand,
811 .eh_abort_handler = bfad_im_abort_handler,
812 .eh_device_reset_handler = bfad_im_reset_lun_handler,
813 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
815 .slave_alloc = bfad_im_slave_alloc,
816 .slave_configure = bfad_im_slave_configure,
817 .slave_destroy = bfad_im_slave_destroy,
820 .sg_tablesize = BFAD_IO_MAX_SGE,
822 .use_clustering = ENABLE_CLUSTERING,
823 .shost_attrs = bfad_im_vport_attrs,
824 .max_sectors = BFAD_MAX_SECTORS,
829 bfad_im_module_init(void)
831 bfad_im_scsi_transport_template =
832 fc_attach_transport(&bfad_im_fc_function_template);
833 if (!bfad_im_scsi_transport_template)
834 return BFA_STATUS_ENOMEM;
836 bfad_im_scsi_vport_transport_template =
837 fc_attach_transport(&bfad_im_vport_fc_function_template);
838 if (!bfad_im_scsi_vport_transport_template) {
839 fc_release_transport(bfad_im_scsi_transport_template);
840 return BFA_STATUS_ENOMEM;
843 return BFA_STATUS_OK;
847 bfad_im_module_exit(void)
849 if (bfad_im_scsi_transport_template)
850 fc_release_transport(bfad_im_scsi_transport_template);
852 if (bfad_im_scsi_vport_transport_template)
853 fc_release_transport(bfad_im_scsi_vport_transport_template);
855 idr_destroy(&bfad_im_port_index);
859 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
861 struct scsi_device *tmp_sdev;
863 if (((jiffies - itnim->last_ramp_up_time) >
864 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
865 ((jiffies - itnim->last_queue_full_time) >
866 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
867 shost_for_each_device(tmp_sdev, sdev->host) {
868 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
869 if (tmp_sdev->id != sdev->id)
871 scsi_change_queue_depth(tmp_sdev,
872 tmp_sdev->queue_depth + 1);
874 itnim->last_ramp_up_time = jiffies;
881 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
883 struct scsi_device *tmp_sdev;
885 itnim->last_queue_full_time = jiffies;
887 shost_for_each_device(tmp_sdev, sdev->host) {
888 if (tmp_sdev->id != sdev->id)
890 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
894 struct bfad_itnim_s *
895 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
897 struct bfad_itnim_s *itnim = NULL;
899 /* Search the mapped list for this target ID */
900 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
901 if (id == itnim->scsi_tgt_id)
909 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
910 * Has the logic to query the LUN Mask database to check if this LUN needs to
911 * be made visible to the SCSI mid-layer or not.
913 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
914 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
917 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
918 struct fc_rport *rport)
920 struct bfad_itnim_data_s *itnim_data =
921 (struct bfad_itnim_data_s *) rport->dd_data;
922 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
923 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
924 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
925 int i = 0, ret = -ENXIO;
927 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
928 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
929 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
930 lun_list[i].rp_tag == bfa_rport->rport_tag &&
931 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
940 * Scsi_Host template entry slave_alloc
943 bfad_im_slave_alloc(struct scsi_device *sdev)
945 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
946 struct bfad_itnim_data_s *itnim_data;
949 if (!rport || fc_remote_port_chkready(rport))
952 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
953 bfa = itnim_data->itnim->bfa_itnim->bfa;
955 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
957 * We should not mask LUN 0 - since this will translate
958 * to no LUN / TARGET for SCSI ml resulting no scan.
960 if (sdev->lun == 0) {
961 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
967 * Query LUN Mask configuration - to expose this LUN
968 * to the SCSI mid-layer or to mask it.
970 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
975 sdev->hostdata = rport->dd_data;
981 bfad_im_supported_speeds(struct bfa_s *bfa)
983 struct bfa_ioc_attr_s *ioc_attr;
984 u32 supported_speed = 0;
986 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
990 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
991 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
992 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
993 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
994 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
995 if (ioc_attr->adapter_attr.is_mezz) {
996 supported_speed |= FC_PORTSPEED_8GBIT |
998 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1000 supported_speed |= FC_PORTSPEED_8GBIT |
1001 FC_PORTSPEED_4GBIT |
1004 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1005 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1007 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1008 supported_speed |= FC_PORTSPEED_10GBIT;
1011 return supported_speed;
1015 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1017 struct Scsi_Host *host = im_port->shost;
1018 struct bfad_s *bfad = im_port->bfad;
1019 struct bfad_port_s *port = im_port->port;
1020 char symname[BFA_SYMNAME_MAXLEN];
1021 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1023 fc_host_node_name(host) =
1024 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1025 fc_host_port_name(host) =
1026 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1027 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1029 fc_host_supported_classes(host) = FC_COS_CLASS3;
1031 memset(fc_host_supported_fc4s(host), 0,
1032 sizeof(fc_host_supported_fc4s(host)));
1033 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1034 /* For FCP type 0x08 */
1035 fc_host_supported_fc4s(host)[2] = 1;
1036 /* For fibre channel services type 0x20 */
1037 fc_host_supported_fc4s(host)[7] = 1;
1039 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1040 BFA_SYMNAME_MAXLEN);
1041 sprintf(fc_host_symbolic_name(host), "%s", symname);
1043 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1044 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1048 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1050 struct fc_rport_identifiers rport_ids;
1051 struct fc_rport *fc_rport;
1052 struct bfad_itnim_data_s *itnim_data;
1054 rport_ids.node_name =
1055 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1056 rport_ids.port_name =
1057 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1059 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1060 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1062 itnim->fc_rport = fc_rport =
1063 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1068 fc_rport->maxframe_size =
1069 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1070 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1072 itnim_data = fc_rport->dd_data;
1073 itnim_data->itnim = itnim;
1075 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1077 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1078 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1080 if ((fc_rport->scsi_target_id != -1)
1081 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1082 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1084 itnim->channel = fc_rport->channel;
1090 * Work queue handler using FC transport service
1094 bfad_im_itnim_work_handler(struct work_struct *work)
1096 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1098 struct bfad_im_s *im = itnim->im;
1099 struct bfad_s *bfad = im->bfad;
1100 struct bfad_im_port_s *im_port;
1101 unsigned long flags;
1102 struct fc_rport *fc_rport;
1105 char wwpn_str[32], fcid_str[16];
1107 spin_lock_irqsave(&bfad->bfad_lock, flags);
1108 im_port = itnim->im_port;
1109 bfa_trc(bfad, itnim->state);
1110 switch (itnim->state) {
1111 case ITNIM_STATE_ONLINE:
1112 if (!itnim->fc_rport) {
1113 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1114 bfad_im_fc_rport_add(im_port, itnim);
1115 spin_lock_irqsave(&bfad->bfad_lock, flags);
1116 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1117 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1118 wwn2str(wwpn_str, wwpn);
1119 fcid2str(fcid_str, fcid);
1120 list_add_tail(&itnim->list_entry,
1121 &im_port->itnim_mapped_list);
1122 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1123 "ITNIM ONLINE Target: %d:0:%d "
1124 "FCID: %s WWPN: %s\n",
1125 im_port->shost->host_no,
1127 fcid_str, wwpn_str);
1130 "%s: itnim %llx is already in online state\n",
1132 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1136 case ITNIM_STATE_OFFLINE_PENDING:
1137 itnim->state = ITNIM_STATE_OFFLINE;
1138 if (itnim->fc_rport) {
1139 fc_rport = itnim->fc_rport;
1140 ((struct bfad_itnim_data_s *)
1141 fc_rport->dd_data)->itnim = NULL;
1142 itnim->fc_rport = NULL;
1143 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1144 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1145 fc_rport->dev_loss_tmo =
1146 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1147 fc_remote_port_delete(fc_rport);
1148 spin_lock_irqsave(&bfad->bfad_lock, flags);
1150 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1151 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1152 wwn2str(wwpn_str, wwpn);
1153 fcid2str(fcid_str, fcid);
1154 list_del(&itnim->list_entry);
1155 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1156 "ITNIM OFFLINE Target: %d:0:%d "
1157 "FCID: %s WWPN: %s\n",
1158 im_port->shost->host_no,
1160 fcid_str, wwpn_str);
1163 case ITNIM_STATE_FREE:
1164 if (itnim->fc_rport) {
1165 fc_rport = itnim->fc_rport;
1166 ((struct bfad_itnim_data_s *)
1167 fc_rport->dd_data)->itnim = NULL;
1168 itnim->fc_rport = NULL;
1169 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1170 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1171 fc_rport->dev_loss_tmo =
1172 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1173 fc_remote_port_delete(fc_rport);
1174 spin_lock_irqsave(&bfad->bfad_lock, flags);
1176 list_del(&itnim->list_entry);
1186 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1190 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1193 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1195 struct bfad_im_port_s *im_port =
1196 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1197 struct bfad_s *bfad = im_port->bfad;
1198 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1199 struct bfad_itnim_s *itnim;
1200 struct bfa_ioim_s *hal_io;
1201 unsigned long flags;
1204 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1206 rc = fc_remote_port_chkready(rport);
1213 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1214 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1215 cmnd->result = DID_NO_CONNECT << 16;
1217 cmnd->result = DID_REQUEUE << 16;
1222 sg_cnt = scsi_dma_map(cmnd);
1224 return SCSI_MLQUEUE_HOST_BUSY;
1226 cmnd->scsi_done = done;
1228 spin_lock_irqsave(&bfad->bfad_lock, flags);
1229 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1231 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1232 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1233 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1238 itnim = itnim_data->itnim;
1240 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1244 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1245 itnim->bfa_itnim, sg_cnt);
1247 printk(KERN_WARNING "hal_io failure\n");
1248 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1249 scsi_dma_unmap(cmnd);
1250 return SCSI_MLQUEUE_HOST_BUSY;
1253 cmnd->host_scribble = (char *)hal_io;
1254 bfa_ioim_start(hal_io);
1255 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1260 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1261 scsi_dma_unmap(cmnd);
1268 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1271 bfad_rport_online_wait(struct bfad_s *bfad)
1274 int rport_delay = 10;
1276 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1277 && i < bfa_linkup_delay; i++) {
1278 set_current_state(TASK_UNINTERRUPTIBLE);
1279 schedule_timeout(HZ);
1282 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1283 rport_delay = rport_delay < bfa_linkup_delay ?
1284 rport_delay : bfa_linkup_delay;
1285 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1286 && i < rport_delay; i++) {
1287 set_current_state(TASK_UNINTERRUPTIBLE);
1288 schedule_timeout(HZ);
1291 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1292 set_current_state(TASK_UNINTERRUPTIBLE);
1293 schedule_timeout(rport_delay * HZ);
1299 bfad_get_linkup_delay(struct bfad_s *bfad)
1302 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1306 * Querying for the boot target port wwns
1307 * -- read from boot information in flash.
1308 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1309 * else => local boot machine set linkup_delay = 0
1312 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1315 /* If Boot over SAN set linkup_delay = 30sec */
1318 /* If local boot; no linkup_delay */
1321 return linkup_delay;