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.
24 #include "bfa_cb_ioim.h"
27 BFA_TRC_FILE(LDRV
, IM
);
29 DEFINE_IDR(bfad_im_port_index
);
30 struct scsi_transport_template
*bfad_im_scsi_transport_template
;
31 struct scsi_transport_template
*bfad_im_scsi_vport_transport_template
;
32 static void bfad_im_itnim_work_handler(struct work_struct
*work
);
33 static int bfad_im_queuecommand(struct Scsi_Host
*h
, struct scsi_cmnd
*cmnd
);
34 static int bfad_im_slave_alloc(struct scsi_device
*sdev
);
35 static void bfad_im_fc_rport_add(struct bfad_im_port_s
*im_port
,
36 struct bfad_itnim_s
*itnim
);
39 bfa_cb_ioim_done(void *drv
, struct bfad_ioim_s
*dio
,
40 enum bfi_ioim_status io_status
, u8 scsi_status
,
41 int sns_len
, u8
*sns_info
, s32 residue
)
43 struct scsi_cmnd
*cmnd
= (struct scsi_cmnd
*)dio
;
44 struct bfad_s
*bfad
= drv
;
45 struct bfad_itnim_data_s
*itnim_data
;
46 struct bfad_itnim_s
*itnim
;
47 u8 host_status
= DID_OK
;
51 bfa_trc(bfad
, scsi_status
);
52 scsi_set_resid(cmnd
, 0);
55 bfa_trc(bfad
, sns_len
);
56 if (sns_len
> SCSI_SENSE_BUFFERSIZE
)
57 sns_len
= SCSI_SENSE_BUFFERSIZE
;
58 memcpy(cmnd
->sense_buffer
, sns_info
, sns_len
);
62 bfa_trc(bfad
, residue
);
63 scsi_set_resid(cmnd
, residue
);
64 if (!sns_len
&& (scsi_status
== SAM_STAT_GOOD
) &&
65 (scsi_bufflen(cmnd
) - residue
) <
68 host_status
= DID_ERROR
;
71 cmnd
->result
= ScsiResult(host_status
, scsi_status
);
75 case BFI_IOIM_STS_ABORTED
:
76 case BFI_IOIM_STS_TIMEDOUT
:
77 case BFI_IOIM_STS_PATHTOV
:
79 host_status
= DID_ERROR
;
80 cmnd
->result
= ScsiResult(host_status
, 0);
83 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
84 if (cmnd
->device
->host
!= NULL
)
87 cmnd
->host_scribble
= NULL
;
88 bfa_trc(bfad
, cmnd
->result
);
90 itnim_data
= cmnd
->device
->hostdata
;
92 itnim
= itnim_data
->itnim
;
93 if (!cmnd
->result
&& itnim
&&
94 (bfa_lun_queue_depth
> cmnd
->device
->queue_depth
)) {
95 /* Queue depth adjustment for good status completion */
96 bfad_os_ramp_up_qdepth(itnim
, cmnd
->device
);
97 } else if (cmnd
->result
== SAM_STAT_TASK_SET_FULL
&& itnim
) {
99 bfad_os_handle_qfull(itnim
, cmnd
->device
);
103 cmnd
->scsi_done(cmnd
);
107 bfa_cb_ioim_good_comp(void *drv
, struct bfad_ioim_s
*dio
)
109 struct scsi_cmnd
*cmnd
= (struct scsi_cmnd
*)dio
;
110 struct bfad_itnim_data_s
*itnim_data
;
111 struct bfad_itnim_s
*itnim
;
113 cmnd
->result
= ScsiResult(DID_OK
, SCSI_STATUS_GOOD
);
115 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
116 if (cmnd
->device
->host
!= NULL
)
117 scsi_dma_unmap(cmnd
);
119 cmnd
->host_scribble
= NULL
;
121 /* Queue depth adjustment */
122 if (bfa_lun_queue_depth
> cmnd
->device
->queue_depth
) {
123 itnim_data
= cmnd
->device
->hostdata
;
125 itnim
= itnim_data
->itnim
;
127 bfad_os_ramp_up_qdepth(itnim
, cmnd
->device
);
131 cmnd
->scsi_done(cmnd
);
135 bfa_cb_ioim_abort(void *drv
, struct bfad_ioim_s
*dio
)
137 struct scsi_cmnd
*cmnd
= (struct scsi_cmnd
*)dio
;
138 struct bfad_s
*bfad
= drv
;
140 cmnd
->result
= ScsiResult(DID_ERROR
, 0);
142 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
143 if (cmnd
->device
->host
!= NULL
)
144 scsi_dma_unmap(cmnd
);
146 bfa_trc(bfad
, cmnd
->result
);
147 cmnd
->host_scribble
= NULL
;
151 bfa_cb_tskim_done(void *bfad
, struct bfad_tskim_s
*dtsk
,
152 enum bfi_tskim_status tsk_status
)
154 struct scsi_cmnd
*cmnd
= (struct scsi_cmnd
*)dtsk
;
155 wait_queue_head_t
*wq
;
157 cmnd
->SCp
.Status
|= tsk_status
<< 1;
158 set_bit(IO_DONE_BIT
, (unsigned long *)&cmnd
->SCp
.Status
);
159 wq
= (wait_queue_head_t
*) cmnd
->SCp
.ptr
;
160 cmnd
->SCp
.ptr
= NULL
;
167 * Scsi_Host_template SCSI host template
170 * Scsi_Host template entry, returns BFAD PCI info.
173 bfad_im_info(struct Scsi_Host
*shost
)
175 static char bfa_buf
[256];
176 struct bfad_im_port_s
*im_port
=
177 (struct bfad_im_port_s
*) shost
->hostdata
[0];
178 struct bfad_s
*bfad
= im_port
->bfad
;
179 struct bfa_s
*bfa
= &bfad
->bfa
;
180 struct bfa_ioc_s
*ioc
= &bfa
->ioc
;
181 char model
[BFA_ADAPTER_MODEL_NAME_LEN
];
183 bfa_get_adapter_model(bfa
, model
);
185 memset(bfa_buf
, 0, sizeof(bfa_buf
));
187 snprintf(bfa_buf
, sizeof(bfa_buf
),
188 "Brocade FCOE Adapter, " "model: %s hwpath: %s driver: %s",
189 model
, bfad
->pci_name
, BFAD_DRIVER_VERSION
);
191 snprintf(bfa_buf
, sizeof(bfa_buf
),
192 "Brocade FC Adapter, " "model: %s hwpath: %s driver: %s",
193 model
, bfad
->pci_name
, BFAD_DRIVER_VERSION
);
199 * Scsi_Host template entry, aborts the specified SCSI command.
201 * Returns: SUCCESS or FAILED.
204 bfad_im_abort_handler(struct scsi_cmnd
*cmnd
)
206 struct Scsi_Host
*shost
= cmnd
->device
->host
;
207 struct bfad_im_port_s
*im_port
=
208 (struct bfad_im_port_s
*) shost
->hostdata
[0];
209 struct bfad_s
*bfad
= im_port
->bfad
;
210 struct bfa_ioim_s
*hal_io
;
215 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
216 hal_io
= (struct bfa_ioim_s
*) cmnd
->host_scribble
;
218 /* IO has been completed, retrun success */
222 if (hal_io
->dio
!= (struct bfad_ioim_s
*) cmnd
) {
227 bfa_trc(bfad
, hal_io
->iotag
);
228 BFA_LOG(KERN_INFO
, bfad
, bfa_log_level
,
229 "scsi%d: abort cmnd %p iotag %x\n",
230 im_port
->shost
->host_no
, cmnd
, hal_io
->iotag
);
231 (void) bfa_ioim_abort(hal_io
);
232 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
234 /* Need to wait until the command get aborted */
236 while ((struct bfa_ioim_s
*) cmnd
->host_scribble
== hal_io
) {
237 set_current_state(TASK_UNINTERRUPTIBLE
);
238 schedule_timeout(timeout
);
239 if (timeout
< 4 * HZ
)
243 cmnd
->scsi_done(cmnd
);
244 bfa_trc(bfad
, hal_io
->iotag
);
245 BFA_LOG(KERN_INFO
, bfad
, bfa_log_level
,
246 "scsi%d: complete abort 0x%p iotag 0x%x\n",
247 im_port
->shost
->host_no
, cmnd
, hal_io
->iotag
);
250 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
255 bfad_im_target_reset_send(struct bfad_s
*bfad
, struct scsi_cmnd
*cmnd
,
256 struct bfad_itnim_s
*itnim
)
258 struct bfa_tskim_s
*tskim
;
259 struct bfa_itnim_s
*bfa_itnim
;
260 bfa_status_t rc
= BFA_STATUS_OK
;
262 tskim
= bfa_tskim_alloc(&bfad
->bfa
, (struct bfad_tskim_s
*) cmnd
);
264 BFA_LOG(KERN_ERR
, bfad
, bfa_log_level
,
265 "target reset, fail to allocate tskim\n");
266 rc
= BFA_STATUS_FAILED
;
271 * Set host_scribble to NULL to avoid aborting a task command if
274 cmnd
->host_scribble
= NULL
;
275 cmnd
->SCp
.Status
= 0;
276 bfa_itnim
= bfa_fcs_itnim_get_halitn(&itnim
->fcs_itnim
);
277 bfa_tskim_start(tskim
, bfa_itnim
, (lun_t
)0,
278 FCP_TM_TARGET_RESET
, BFAD_TARGET_RESET_TMO
);
284 * Scsi_Host template entry, resets a LUN and abort its all commands.
286 * Returns: SUCCESS or FAILED.
290 bfad_im_reset_lun_handler(struct scsi_cmnd
*cmnd
)
292 struct Scsi_Host
*shost
= cmnd
->device
->host
;
293 struct bfad_im_port_s
*im_port
=
294 (struct bfad_im_port_s
*) shost
->hostdata
[0];
295 struct bfad_itnim_data_s
*itnim_data
= cmnd
->device
->hostdata
;
296 struct bfad_s
*bfad
= im_port
->bfad
;
297 struct bfa_tskim_s
*tskim
;
298 struct bfad_itnim_s
*itnim
;
299 struct bfa_itnim_s
*bfa_itnim
;
300 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq
);
303 enum bfi_tskim_status task_status
;
305 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
306 itnim
= itnim_data
->itnim
;
308 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
313 tskim
= bfa_tskim_alloc(&bfad
->bfa
, (struct bfad_tskim_s
*) cmnd
);
315 BFA_LOG(KERN_ERR
, bfad
, bfa_log_level
,
316 "LUN reset, fail to allocate tskim");
317 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
323 * Set host_scribble to NULL to avoid aborting a task command
326 cmnd
->host_scribble
= NULL
;
327 cmnd
->SCp
.ptr
= (char *)&wq
;
328 cmnd
->SCp
.Status
= 0;
329 bfa_itnim
= bfa_fcs_itnim_get_halitn(&itnim
->fcs_itnim
);
330 bfa_tskim_start(tskim
, bfa_itnim
,
331 bfad_int_to_lun(cmnd
->device
->lun
),
332 FCP_TM_LUN_RESET
, BFAD_LUN_RESET_TMO
);
333 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
335 wait_event(wq
, test_bit(IO_DONE_BIT
,
336 (unsigned long *)&cmnd
->SCp
.Status
));
338 task_status
= cmnd
->SCp
.Status
>> 1;
339 if (task_status
!= BFI_TSKIM_STS_OK
) {
340 BFA_LOG(KERN_ERR
, bfad
, bfa_log_level
,
341 "LUN reset failure, status: %d\n", task_status
);
350 * Scsi_Host template entry, resets the bus and abort all commands.
353 bfad_im_reset_bus_handler(struct scsi_cmnd
*cmnd
)
355 struct Scsi_Host
*shost
= cmnd
->device
->host
;
356 struct bfad_im_port_s
*im_port
=
357 (struct bfad_im_port_s
*) shost
->hostdata
[0];
358 struct bfad_s
*bfad
= im_port
->bfad
;
359 struct bfad_itnim_s
*itnim
;
361 u32 i
, rc
, err_cnt
= 0;
362 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq
);
363 enum bfi_tskim_status task_status
;
365 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
366 for (i
= 0; i
< MAX_FCP_TARGET
; i
++) {
367 itnim
= bfad_os_get_itnim(im_port
, i
);
369 cmnd
->SCp
.ptr
= (char *)&wq
;
370 rc
= bfad_im_target_reset_send(bfad
, cmnd
, itnim
);
371 if (rc
!= BFA_STATUS_OK
) {
376 /* wait target reset to complete */
377 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
378 wait_event(wq
, test_bit(IO_DONE_BIT
,
379 (unsigned long *)&cmnd
->SCp
.Status
));
380 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
382 task_status
= cmnd
->SCp
.Status
>> 1;
383 if (task_status
!= BFI_TSKIM_STS_OK
) {
384 BFA_LOG(KERN_ERR
, bfad
, bfa_log_level
,
385 "target reset failure,"
386 " status: %d\n", task_status
);
391 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
400 * Scsi_Host template entry slave_destroy.
403 bfad_im_slave_destroy(struct scsi_device
*sdev
)
405 sdev
->hostdata
= NULL
;
410 * BFA FCS itnim callbacks
414 * BFA FCS itnim alloc callback, after successful PRLI
418 bfa_fcb_itnim_alloc(struct bfad_s
*bfad
, struct bfa_fcs_itnim_s
**itnim
,
419 struct bfad_itnim_s
**itnim_drv
)
421 *itnim_drv
= kzalloc(sizeof(struct bfad_itnim_s
), GFP_ATOMIC
);
422 if (*itnim_drv
== NULL
)
425 (*itnim_drv
)->im
= bfad
->im
;
426 *itnim
= &(*itnim_drv
)->fcs_itnim
;
427 (*itnim_drv
)->state
= ITNIM_STATE_NONE
;
430 * Initiaze the itnim_work
432 INIT_WORK(&(*itnim_drv
)->itnim_work
, bfad_im_itnim_work_handler
);
433 bfad
->bfad_flags
|= BFAD_RPORT_ONLINE
;
437 * BFA FCS itnim free callback.
438 * Context: Interrupt. bfad_lock is held
441 bfa_fcb_itnim_free(struct bfad_s
*bfad
, struct bfad_itnim_s
*itnim_drv
)
443 struct bfad_port_s
*port
;
446 char wwpn_str
[32], fcid_str
[16];
447 struct bfad_im_s
*im
= itnim_drv
->im
;
449 /* online to free state transtion should not happen */
450 bfa_assert(itnim_drv
->state
!= ITNIM_STATE_ONLINE
);
452 itnim_drv
->queue_work
= 1;
453 /* offline request is not yet done, use the same request to free */
454 if (itnim_drv
->state
== ITNIM_STATE_OFFLINE_PENDING
)
455 itnim_drv
->queue_work
= 0;
457 itnim_drv
->state
= ITNIM_STATE_FREE
;
458 port
= bfa_fcs_itnim_get_drvport(&itnim_drv
->fcs_itnim
);
459 itnim_drv
->im_port
= port
->im_port
;
460 wwpn
= bfa_fcs_itnim_get_pwwn(&itnim_drv
->fcs_itnim
);
461 fcid
= bfa_fcs_itnim_get_fcid(&itnim_drv
->fcs_itnim
);
462 wwn2str(wwpn_str
, wwpn
);
463 fcid2str(fcid_str
, fcid
);
464 BFA_LOG(KERN_INFO
, bfad
, bfa_log_level
,
465 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
466 port
->im_port
->shost
->host_no
,
469 /* ITNIM processing */
470 if (itnim_drv
->queue_work
)
471 queue_work(im
->drv_workq
, &itnim_drv
->itnim_work
);
475 * BFA FCS itnim online callback.
476 * Context: Interrupt. bfad_lock is held
479 bfa_fcb_itnim_online(struct bfad_itnim_s
*itnim_drv
)
481 struct bfad_port_s
*port
;
482 struct bfad_im_s
*im
= itnim_drv
->im
;
484 itnim_drv
->bfa_itnim
= bfa_fcs_itnim_get_halitn(&itnim_drv
->fcs_itnim
);
485 port
= bfa_fcs_itnim_get_drvport(&itnim_drv
->fcs_itnim
);
486 itnim_drv
->state
= ITNIM_STATE_ONLINE
;
487 itnim_drv
->queue_work
= 1;
488 itnim_drv
->im_port
= port
->im_port
;
490 /* ITNIM processing */
491 if (itnim_drv
->queue_work
)
492 queue_work(im
->drv_workq
, &itnim_drv
->itnim_work
);
496 * BFA FCS itnim offline callback.
497 * Context: Interrupt. bfad_lock is held
500 bfa_fcb_itnim_offline(struct bfad_itnim_s
*itnim_drv
)
502 struct bfad_port_s
*port
;
504 struct bfad_im_s
*im
= itnim_drv
->im
;
506 port
= bfa_fcs_itnim_get_drvport(&itnim_drv
->fcs_itnim
);
508 if ((bfad
->pport
.flags
& BFAD_PORT_DELETE
) ||
509 (port
->flags
& BFAD_PORT_DELETE
)) {
510 itnim_drv
->state
= ITNIM_STATE_OFFLINE
;
513 itnim_drv
->im_port
= port
->im_port
;
514 itnim_drv
->state
= ITNIM_STATE_OFFLINE_PENDING
;
515 itnim_drv
->queue_work
= 1;
517 /* ITNIM processing */
518 if (itnim_drv
->queue_work
)
519 queue_work(im
->drv_workq
, &itnim_drv
->itnim_work
);
523 * Allocate a Scsi_Host for a port.
526 bfad_im_scsi_host_alloc(struct bfad_s
*bfad
, struct bfad_im_port_s
*im_port
,
531 mutex_lock(&bfad_mutex
);
532 if (!idr_pre_get(&bfad_im_port_index
, GFP_KERNEL
)) {
533 mutex_unlock(&bfad_mutex
);
534 printk(KERN_WARNING
"idr_pre_get failure\n");
538 error
= idr_get_new(&bfad_im_port_index
, im_port
,
541 mutex_unlock(&bfad_mutex
);
542 printk(KERN_WARNING
"idr_get_new failure\n");
546 mutex_unlock(&bfad_mutex
);
548 im_port
->shost
= bfad_os_scsi_host_alloc(im_port
, bfad
);
549 if (!im_port
->shost
) {
554 im_port
->shost
->hostdata
[0] = (unsigned long)im_port
;
555 im_port
->shost
->unique_id
= im_port
->idr_id
;
556 im_port
->shost
->this_id
= -1;
557 im_port
->shost
->max_id
= MAX_FCP_TARGET
;
558 im_port
->shost
->max_lun
= MAX_FCP_LUN
;
559 im_port
->shost
->max_cmd_len
= 16;
560 im_port
->shost
->can_queue
= bfad
->cfg_data
.ioc_queue_depth
;
561 if (im_port
->port
->pvb_type
== BFAD_PORT_PHYS_BASE
)
562 im_port
->shost
->transportt
= bfad_im_scsi_transport_template
;
564 im_port
->shost
->transportt
=
565 bfad_im_scsi_vport_transport_template
;
567 error
= scsi_add_host_with_dma(im_port
->shost
, dev
, &bfad
->pcidev
->dev
);
569 printk(KERN_WARNING
"scsi_add_host failure %d\n", error
);
573 /* setup host fixed attribute if the lk supports */
574 bfad_os_fc_host_init(im_port
);
579 scsi_host_put(im_port
->shost
);
580 im_port
->shost
= NULL
;
582 mutex_lock(&bfad_mutex
);
583 idr_remove(&bfad_im_port_index
, im_port
->idr_id
);
584 mutex_unlock(&bfad_mutex
);
590 bfad_im_scsi_host_free(struct bfad_s
*bfad
, struct bfad_im_port_s
*im_port
)
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
);
596 fc_remove_host(im_port
->shost
);
598 scsi_remove_host(im_port
->shost
);
599 scsi_host_put(im_port
->shost
);
601 mutex_lock(&bfad_mutex
);
602 idr_remove(&bfad_im_port_index
, im_port
->idr_id
);
603 mutex_unlock(&bfad_mutex
);
607 bfad_im_port_delete_handler(struct work_struct
*work
)
609 struct bfad_im_port_s
*im_port
=
610 container_of(work
, struct bfad_im_port_s
, port_delete_work
);
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
);
619 bfad_im_port_new(struct bfad_s
*bfad
, struct bfad_port_s
*port
)
621 int rc
= BFA_STATUS_OK
;
622 struct bfad_im_port_s
*im_port
;
624 im_port
= kzalloc(sizeof(struct bfad_im_port_s
), GFP_ATOMIC
);
625 if (im_port
== NULL
) {
626 rc
= BFA_STATUS_ENOMEM
;
629 port
->im_port
= im_port
;
630 im_port
->port
= port
;
631 im_port
->bfad
= bfad
;
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
);
642 bfad_im_port_delete(struct bfad_s
*bfad
, struct bfad_port_s
*port
)
644 struct bfad_im_port_s
*im_port
= port
->im_port
;
646 queue_work(bfad
->im
->drv_workq
,
647 &im_port
->port_delete_work
);
651 bfad_im_port_clean(struct bfad_im_port_s
*im_port
)
653 struct bfad_fcp_binding
*bp
, *bp_new
;
655 struct bfad_s
*bfad
= im_port
->bfad
;
657 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
658 list_for_each_entry_safe(bp
, bp_new
, &im_port
->binding_list
,
660 list_del(&bp
->list_entry
);
664 /* the itnim_mapped_list must be empty at this time */
665 bfa_assert(list_empty(&im_port
->itnim_mapped_list
));
667 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
671 bfad_im_probe(struct bfad_s
*bfad
)
673 struct bfad_im_s
*im
;
674 bfa_status_t rc
= BFA_STATUS_OK
;
676 im
= kzalloc(sizeof(struct bfad_im_s
), GFP_KERNEL
);
678 rc
= BFA_STATUS_ENOMEM
;
685 if (bfad_os_thread_workq(bfad
) != BFA_STATUS_OK
) {
687 rc
= BFA_STATUS_FAILED
;
695 bfad_im_probe_undo(struct bfad_s
*bfad
)
698 bfad_os_destroy_workq(bfad
->im
);
705 bfad_os_scsi_host_alloc(struct bfad_im_port_s
*im_port
, struct bfad_s
*bfad
)
707 struct scsi_host_template
*sht
;
709 if (im_port
->port
->pvb_type
== BFAD_PORT_PHYS_BASE
)
710 sht
= &bfad_im_scsi_host_template
;
712 sht
= &bfad_im_vport_template
;
714 sht
->sg_tablesize
= bfad
->cfg_data
.io_max_sge
;
716 return scsi_host_alloc(sht
, sizeof(unsigned long));
720 bfad_os_scsi_host_free(struct bfad_s
*bfad
, struct bfad_im_port_s
*im_port
)
722 if (!(im_port
->flags
& BFAD_PORT_DELETE
))
723 flush_workqueue(bfad
->im
->drv_workq
);
724 bfad_im_scsi_host_free(im_port
->bfad
, im_port
);
725 bfad_im_port_clean(im_port
);
730 bfad_os_destroy_workq(struct bfad_im_s
*im
)
732 if (im
&& im
->drv_workq
) {
733 flush_workqueue(im
->drv_workq
);
734 destroy_workqueue(im
->drv_workq
);
735 im
->drv_workq
= NULL
;
740 bfad_os_thread_workq(struct bfad_s
*bfad
)
742 struct bfad_im_s
*im
= bfad
->im
;
745 snprintf(im
->drv_workq_name
, KOBJ_NAME_LEN
, "bfad_wq_%d",
747 im
->drv_workq
= create_singlethread_workqueue(im
->drv_workq_name
);
749 return BFA_STATUS_FAILED
;
751 return BFA_STATUS_OK
;
755 * Scsi_Host template entry.
758 * OS entry point to adjust the queue_depths on a per-device basis.
759 * Called once per device during the bus scan.
760 * Return non-zero if fails.
763 bfad_im_slave_configure(struct scsi_device
*sdev
)
765 if (sdev
->tagged_supported
)
766 scsi_activate_tcq(sdev
, bfa_lun_queue_depth
);
768 scsi_deactivate_tcq(sdev
, bfa_lun_queue_depth
);
773 struct scsi_host_template bfad_im_scsi_host_template
= {
774 .module
= THIS_MODULE
,
775 .name
= BFAD_DRIVER_NAME
,
776 .info
= bfad_im_info
,
777 .queuecommand
= bfad_im_queuecommand
,
778 .eh_abort_handler
= bfad_im_abort_handler
,
779 .eh_device_reset_handler
= bfad_im_reset_lun_handler
,
780 .eh_bus_reset_handler
= bfad_im_reset_bus_handler
,
782 .slave_alloc
= bfad_im_slave_alloc
,
783 .slave_configure
= bfad_im_slave_configure
,
784 .slave_destroy
= bfad_im_slave_destroy
,
787 .sg_tablesize
= BFAD_IO_MAX_SGE
,
789 .use_clustering
= ENABLE_CLUSTERING
,
790 .shost_attrs
= bfad_im_host_attrs
,
791 .max_sectors
= 0xFFFF,
794 struct scsi_host_template bfad_im_vport_template
= {
795 .module
= THIS_MODULE
,
796 .name
= BFAD_DRIVER_NAME
,
797 .info
= bfad_im_info
,
798 .queuecommand
= bfad_im_queuecommand
,
799 .eh_abort_handler
= bfad_im_abort_handler
,
800 .eh_device_reset_handler
= bfad_im_reset_lun_handler
,
801 .eh_bus_reset_handler
= bfad_im_reset_bus_handler
,
803 .slave_alloc
= bfad_im_slave_alloc
,
804 .slave_configure
= bfad_im_slave_configure
,
805 .slave_destroy
= bfad_im_slave_destroy
,
808 .sg_tablesize
= BFAD_IO_MAX_SGE
,
810 .use_clustering
= ENABLE_CLUSTERING
,
811 .shost_attrs
= bfad_im_vport_attrs
,
812 .max_sectors
= 0xFFFF,
816 bfad_im_module_init(void)
818 bfad_im_scsi_transport_template
=
819 fc_attach_transport(&bfad_im_fc_function_template
);
820 if (!bfad_im_scsi_transport_template
)
821 return BFA_STATUS_ENOMEM
;
823 bfad_im_scsi_vport_transport_template
=
824 fc_attach_transport(&bfad_im_vport_fc_function_template
);
825 if (!bfad_im_scsi_vport_transport_template
) {
826 fc_release_transport(bfad_im_scsi_transport_template
);
827 return BFA_STATUS_ENOMEM
;
830 return BFA_STATUS_OK
;
834 bfad_im_module_exit(void)
836 if (bfad_im_scsi_transport_template
)
837 fc_release_transport(bfad_im_scsi_transport_template
);
839 if (bfad_im_scsi_vport_transport_template
)
840 fc_release_transport(bfad_im_scsi_vport_transport_template
);
844 bfad_os_ramp_up_qdepth(struct bfad_itnim_s
*itnim
, struct scsi_device
*sdev
)
846 struct scsi_device
*tmp_sdev
;
848 if (((jiffies
- itnim
->last_ramp_up_time
) >
849 BFA_QUEUE_FULL_RAMP_UP_TIME
* HZ
) &&
850 ((jiffies
- itnim
->last_queue_full_time
) >
851 BFA_QUEUE_FULL_RAMP_UP_TIME
* HZ
)) {
852 shost_for_each_device(tmp_sdev
, sdev
->host
) {
853 if (bfa_lun_queue_depth
> tmp_sdev
->queue_depth
) {
854 if (tmp_sdev
->id
!= sdev
->id
)
856 if (tmp_sdev
->ordered_tags
)
857 scsi_adjust_queue_depth(tmp_sdev
,
859 tmp_sdev
->queue_depth
+ 1);
861 scsi_adjust_queue_depth(tmp_sdev
,
863 tmp_sdev
->queue_depth
+ 1);
865 itnim
->last_ramp_up_time
= jiffies
;
872 bfad_os_handle_qfull(struct bfad_itnim_s
*itnim
, struct scsi_device
*sdev
)
874 struct scsi_device
*tmp_sdev
;
876 itnim
->last_queue_full_time
= jiffies
;
878 shost_for_each_device(tmp_sdev
, sdev
->host
) {
879 if (tmp_sdev
->id
!= sdev
->id
)
881 scsi_track_queue_full(tmp_sdev
, tmp_sdev
->queue_depth
- 1);
885 struct bfad_itnim_s
*
886 bfad_os_get_itnim(struct bfad_im_port_s
*im_port
, int id
)
888 struct bfad_itnim_s
*itnim
= NULL
;
890 /* Search the mapped list for this target ID */
891 list_for_each_entry(itnim
, &im_port
->itnim_mapped_list
, list_entry
) {
892 if (id
== itnim
->scsi_tgt_id
)
900 * Scsi_Host template entry slave_alloc
903 bfad_im_slave_alloc(struct scsi_device
*sdev
)
905 struct fc_rport
*rport
= starget_to_rport(scsi_target(sdev
));
907 if (!rport
|| fc_remote_port_chkready(rport
))
910 sdev
->hostdata
= rport
->dd_data
;
916 bfad_im_supported_speeds(struct bfa_s
*bfa
)
918 struct bfa_ioc_attr_s
*ioc_attr
;
919 u32 supported_speed
= 0;
921 ioc_attr
= kzalloc(sizeof(struct bfa_ioc_attr_s
), GFP_KERNEL
);
925 bfa_get_attr(bfa
, ioc_attr
);
926 if (ioc_attr
->adapter_attr
.max_speed
== BFA_PORT_SPEED_8GBPS
) {
927 if (ioc_attr
->adapter_attr
.is_mezz
) {
928 supported_speed
|= FC_PORTSPEED_8GBIT
|
930 FC_PORTSPEED_2GBIT
| FC_PORTSPEED_1GBIT
;
932 supported_speed
|= FC_PORTSPEED_8GBIT
|
936 } else if (ioc_attr
->adapter_attr
.max_speed
== BFA_PORT_SPEED_4GBPS
) {
937 supported_speed
|= FC_PORTSPEED_4GBIT
| FC_PORTSPEED_2GBIT
|
939 } else if (ioc_attr
->adapter_attr
.max_speed
== BFA_PORT_SPEED_10GBPS
) {
940 supported_speed
|= FC_PORTSPEED_10GBIT
;
943 return supported_speed
;
947 bfad_os_fc_host_init(struct bfad_im_port_s
*im_port
)
949 struct Scsi_Host
*host
= im_port
->shost
;
950 struct bfad_s
*bfad
= im_port
->bfad
;
951 struct bfad_port_s
*port
= im_port
->port
;
952 char symname
[BFA_SYMNAME_MAXLEN
];
953 struct bfa_fcport_s
*fcport
= BFA_FCPORT_MOD(&bfad
->bfa
);
955 fc_host_node_name(host
) =
956 cpu_to_be64((bfa_fcs_lport_get_nwwn(port
->fcs_port
)));
957 fc_host_port_name(host
) =
958 cpu_to_be64((bfa_fcs_lport_get_pwwn(port
->fcs_port
)));
959 fc_host_max_npiv_vports(host
) = bfa_lps_get_max_vport(&bfad
->bfa
);
961 fc_host_supported_classes(host
) = FC_COS_CLASS3
;
963 memset(fc_host_supported_fc4s(host
), 0,
964 sizeof(fc_host_supported_fc4s(host
)));
965 if (supported_fc4s
& BFA_LPORT_ROLE_FCP_IM
)
966 /* For FCP type 0x08 */
967 fc_host_supported_fc4s(host
)[2] = 1;
968 /* For fibre channel services type 0x20 */
969 fc_host_supported_fc4s(host
)[7] = 1;
971 strncpy(symname
, bfad
->bfa_fcs
.fabric
.bport
.port_cfg
.sym_name
.symname
,
973 sprintf(fc_host_symbolic_name(host
), "%s", symname
);
975 fc_host_supported_speeds(host
) = bfad_im_supported_speeds(&bfad
->bfa
);
976 fc_host_maxframe_size(host
) = fcport
->cfg
.maxfrsize
;
980 bfad_im_fc_rport_add(struct bfad_im_port_s
*im_port
, struct bfad_itnim_s
*itnim
)
982 struct fc_rport_identifiers rport_ids
;
983 struct fc_rport
*fc_rport
;
984 struct bfad_itnim_data_s
*itnim_data
;
986 rport_ids
.node_name
=
987 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim
->fcs_itnim
));
988 rport_ids
.port_name
=
989 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim
->fcs_itnim
));
991 bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim
->fcs_itnim
));
992 rport_ids
.roles
= FC_RPORT_ROLE_UNKNOWN
;
994 itnim
->fc_rport
= fc_rport
=
995 fc_remote_port_add(im_port
->shost
, 0, &rport_ids
);
1000 fc_rport
->maxframe_size
=
1001 bfa_fcs_itnim_get_maxfrsize(&itnim
->fcs_itnim
);
1002 fc_rport
->supported_classes
= bfa_fcs_itnim_get_cos(&itnim
->fcs_itnim
);
1004 itnim_data
= fc_rport
->dd_data
;
1005 itnim_data
->itnim
= itnim
;
1007 rport_ids
.roles
|= FC_RPORT_ROLE_FCP_TARGET
;
1009 if (rport_ids
.roles
!= FC_RPORT_ROLE_UNKNOWN
)
1010 fc_remote_port_rolechg(fc_rport
, rport_ids
.roles
);
1012 if ((fc_rport
->scsi_target_id
!= -1)
1013 && (fc_rport
->scsi_target_id
< MAX_FCP_TARGET
))
1014 itnim
->scsi_tgt_id
= fc_rport
->scsi_target_id
;
1020 * Work queue handler using FC transport service
1024 bfad_im_itnim_work_handler(struct work_struct
*work
)
1026 struct bfad_itnim_s
*itnim
= container_of(work
, struct bfad_itnim_s
,
1028 struct bfad_im_s
*im
= itnim
->im
;
1029 struct bfad_s
*bfad
= im
->bfad
;
1030 struct bfad_im_port_s
*im_port
;
1031 unsigned long flags
;
1032 struct fc_rport
*fc_rport
;
1035 char wwpn_str
[32], fcid_str
[16];
1037 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
1038 im_port
= itnim
->im_port
;
1039 bfa_trc(bfad
, itnim
->state
);
1040 switch (itnim
->state
) {
1041 case ITNIM_STATE_ONLINE
:
1042 if (!itnim
->fc_rport
) {
1043 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1044 bfad_im_fc_rport_add(im_port
, itnim
);
1045 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
1046 wwpn
= bfa_fcs_itnim_get_pwwn(&itnim
->fcs_itnim
);
1047 fcid
= bfa_fcs_itnim_get_fcid(&itnim
->fcs_itnim
);
1048 wwn2str(wwpn_str
, wwpn
);
1049 fcid2str(fcid_str
, fcid
);
1050 list_add_tail(&itnim
->list_entry
,
1051 &im_port
->itnim_mapped_list
);
1052 BFA_LOG(KERN_INFO
, bfad
, bfa_log_level
,
1053 "ITNIM ONLINE Target: %d:0:%d "
1054 "FCID: %s WWPN: %s\n",
1055 im_port
->shost
->host_no
,
1057 fcid_str
, wwpn_str
);
1060 "%s: itnim %llx is already in online state\n",
1062 bfa_fcs_itnim_get_pwwn(&itnim
->fcs_itnim
));
1066 case ITNIM_STATE_OFFLINE_PENDING
:
1067 itnim
->state
= ITNIM_STATE_OFFLINE
;
1068 if (itnim
->fc_rport
) {
1069 fc_rport
= itnim
->fc_rport
;
1070 ((struct bfad_itnim_data_s
*)
1071 fc_rport
->dd_data
)->itnim
= NULL
;
1072 itnim
->fc_rport
= NULL
;
1073 if (!(im_port
->port
->flags
& BFAD_PORT_DELETE
)) {
1074 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1075 fc_rport
->dev_loss_tmo
=
1076 bfa_fcpim_path_tov_get(&bfad
->bfa
) + 1;
1077 fc_remote_port_delete(fc_rport
);
1078 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
1080 wwpn
= bfa_fcs_itnim_get_pwwn(&itnim
->fcs_itnim
);
1081 fcid
= bfa_fcs_itnim_get_fcid(&itnim
->fcs_itnim
);
1082 wwn2str(wwpn_str
, wwpn
);
1083 fcid2str(fcid_str
, fcid
);
1084 list_del(&itnim
->list_entry
);
1085 BFA_LOG(KERN_INFO
, bfad
, bfa_log_level
,
1086 "ITNIM OFFLINE Target: %d:0:%d "
1087 "FCID: %s WWPN: %s\n",
1088 im_port
->shost
->host_no
,
1090 fcid_str
, wwpn_str
);
1093 case ITNIM_STATE_FREE
:
1094 if (itnim
->fc_rport
) {
1095 fc_rport
= itnim
->fc_rport
;
1096 ((struct bfad_itnim_data_s
*)
1097 fc_rport
->dd_data
)->itnim
= NULL
;
1098 itnim
->fc_rport
= NULL
;
1099 if (!(im_port
->port
->flags
& BFAD_PORT_DELETE
)) {
1100 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1101 fc_rport
->dev_loss_tmo
=
1102 bfa_fcpim_path_tov_get(&bfad
->bfa
) + 1;
1103 fc_remote_port_delete(fc_rport
);
1104 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
1106 list_del(&itnim
->list_entry
);
1116 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1120 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1123 bfad_im_queuecommand_lck(struct scsi_cmnd
*cmnd
, void (*done
) (struct scsi_cmnd
*))
1125 struct bfad_im_port_s
*im_port
=
1126 (struct bfad_im_port_s
*) cmnd
->device
->host
->hostdata
[0];
1127 struct bfad_s
*bfad
= im_port
->bfad
;
1128 struct bfad_itnim_data_s
*itnim_data
= cmnd
->device
->hostdata
;
1129 struct bfad_itnim_s
*itnim
;
1130 struct bfa_ioim_s
*hal_io
;
1131 unsigned long flags
;
1134 struct fc_rport
*rport
= starget_to_rport(scsi_target(cmnd
->device
));
1136 rc
= fc_remote_port_chkready(rport
);
1143 sg_cnt
= scsi_dma_map(cmnd
);
1145 return SCSI_MLQUEUE_HOST_BUSY
;
1147 cmnd
->scsi_done
= done
;
1149 spin_lock_irqsave(&bfad
->bfad_lock
, flags
);
1150 if (!(bfad
->bfad_flags
& BFAD_HAL_START_DONE
)) {
1152 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1153 bfad
->inst_no
, cmnd
, cmnd
->cmnd
[0]);
1154 cmnd
->result
= ScsiResult(DID_NO_CONNECT
, 0);
1159 itnim
= itnim_data
->itnim
;
1161 cmnd
->result
= ScsiResult(DID_IMM_RETRY
, 0);
1165 hal_io
= bfa_ioim_alloc(&bfad
->bfa
, (struct bfad_ioim_s
*) cmnd
,
1166 itnim
->bfa_itnim
, sg_cnt
);
1168 printk(KERN_WARNING
"hal_io failure\n");
1169 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1170 scsi_dma_unmap(cmnd
);
1171 return SCSI_MLQUEUE_HOST_BUSY
;
1174 cmnd
->host_scribble
= (char *)hal_io
;
1175 bfa_trc_fp(bfad
, hal_io
->iotag
);
1176 bfa_ioim_start(hal_io
);
1177 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1182 spin_unlock_irqrestore(&bfad
->bfad_lock
, flags
);
1183 scsi_dma_unmap(cmnd
);
1190 static DEF_SCSI_QCMD(bfad_im_queuecommand
)
1193 bfad_os_rport_online_wait(struct bfad_s
*bfad
)
1196 int rport_delay
= 10;
1198 for (i
= 0; !(bfad
->bfad_flags
& BFAD_PORT_ONLINE
)
1199 && i
< bfa_linkup_delay
; i
++) {
1200 set_current_state(TASK_UNINTERRUPTIBLE
);
1201 schedule_timeout(HZ
);
1204 if (bfad
->bfad_flags
& BFAD_PORT_ONLINE
) {
1205 rport_delay
= rport_delay
< bfa_linkup_delay
?
1206 rport_delay
: bfa_linkup_delay
;
1207 for (i
= 0; !(bfad
->bfad_flags
& BFAD_RPORT_ONLINE
)
1208 && i
< rport_delay
; i
++) {
1209 set_current_state(TASK_UNINTERRUPTIBLE
);
1210 schedule_timeout(HZ
);
1213 if (rport_delay
> 0 && (bfad
->bfad_flags
& BFAD_RPORT_ONLINE
)) {
1214 set_current_state(TASK_UNINTERRUPTIBLE
);
1215 schedule_timeout(rport_delay
* HZ
);
1221 bfad_os_get_linkup_delay(struct bfad_s
*bfad
)
1224 wwn_t wwns
[BFA_PREBOOT_BOOTLUN_MAX
];
1228 * Querying for the boot target port wwns
1229 * -- read from boot information in flash.
1230 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1231 * else => local boot machine set linkup_delay = 0
1234 bfa_iocfc_get_bootwwns(&bfad
->bfa
, &nwwns
, wwns
);
1237 /* If Boot over SAN set linkup_delay = 30sec */
1240 /* If local boot; no linkup_delay */
1243 return linkup_delay
;