1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21 #include <linux/pci.h>
22 #include <linux/interrupt.h>
23 #include <linux/delay.h>
24 #include <asm/unaligned.h>
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_eh.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_tcq.h>
31 #include <scsi/scsi_transport_fc.h>
33 #include "lpfc_version.h"
37 #include "lpfc_sli4.h"
39 #include "lpfc_disc.h"
40 #include "lpfc_scsi.h"
42 #include "lpfc_logmsg.h"
43 #include "lpfc_crtn.h"
44 #include "lpfc_vport.h"
46 #define LPFC_RESET_WAIT 2
47 #define LPFC_ABORT_WAIT 2
51 static char *dif_op_str
[] = {
53 "SCSI_PROT_READ_INSERT",
54 "SCSI_PROT_WRITE_STRIP",
55 "SCSI_PROT_READ_STRIP",
56 "SCSI_PROT_WRITE_INSERT",
57 "SCSI_PROT_READ_PASS",
58 "SCSI_PROT_WRITE_PASS",
59 "SCSI_PROT_READ_CONVERT",
60 "SCSI_PROT_WRITE_CONVERT"
63 lpfc_release_scsi_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
);
66 lpfc_debug_save_data(struct scsi_cmnd
*cmnd
)
69 struct scatterlist
*sgde
= scsi_sglist(cmnd
);
71 if (!_dump_buf_data
) {
72 printk(KERN_ERR
"BLKGRD ERROR %s _dump_buf_data is NULL\n",
79 printk(KERN_ERR
"BLKGRD ERROR: data scatterlist is null\n");
83 dst
= (void *) _dump_buf_data
;
86 memcpy(dst
, src
, sgde
->length
);
93 lpfc_debug_save_dif(struct scsi_cmnd
*cmnd
)
96 struct scatterlist
*sgde
= scsi_prot_sglist(cmnd
);
99 printk(KERN_ERR
"BLKGRD ERROR %s _dump_buf_data is NULL\n",
105 printk(KERN_ERR
"BLKGRD ERROR: prot scatterlist is null\n");
112 memcpy(dst
, src
, sgde
->length
);
114 sgde
= sg_next(sgde
);
119 * lpfc_update_stats - Update statistical data for the command completion
120 * @phba: Pointer to HBA object.
121 * @lpfc_cmd: lpfc scsi command object pointer.
123 * This function is called when there is a command completion and this
124 * function updates the statistical data for the command completion.
127 lpfc_update_stats(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
129 struct lpfc_rport_data
*rdata
= lpfc_cmd
->rdata
;
130 struct lpfc_nodelist
*pnode
= rdata
->pnode
;
131 struct scsi_cmnd
*cmd
= lpfc_cmd
->pCmd
;
133 struct Scsi_Host
*shost
= cmd
->device
->host
;
134 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
135 unsigned long latency
;
141 latency
= jiffies_to_msecs((long)jiffies
- (long)lpfc_cmd
->start_time
);
143 spin_lock_irqsave(shost
->host_lock
, flags
);
144 if (!vport
->stat_data_enabled
||
145 vport
->stat_data_blocked
||
147 (phba
->bucket_type
== LPFC_NO_BUCKET
)) {
148 spin_unlock_irqrestore(shost
->host_lock
, flags
);
152 if (phba
->bucket_type
== LPFC_LINEAR_BUCKET
) {
153 i
= (latency
+ phba
->bucket_step
- 1 - phba
->bucket_base
)/
155 /* check array subscript bounds */
158 else if (i
>= LPFC_MAX_BUCKET_COUNT
)
159 i
= LPFC_MAX_BUCKET_COUNT
- 1;
161 for (i
= 0; i
< LPFC_MAX_BUCKET_COUNT
-1; i
++)
162 if (latency
<= (phba
->bucket_base
+
163 ((1<<i
)*phba
->bucket_step
)))
167 pnode
->lat_data
[i
].cmd_count
++;
168 spin_unlock_irqrestore(shost
->host_lock
, flags
);
172 * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
173 * @phba: Pointer to HBA context object.
174 * @vport: Pointer to vport object.
175 * @ndlp: Pointer to FC node associated with the target.
176 * @lun: Lun number of the scsi device.
177 * @old_val: Old value of the queue depth.
178 * @new_val: New value of the queue depth.
180 * This function sends an event to the mgmt application indicating
181 * there is a change in the scsi device queue depth.
184 lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba
*phba
,
185 struct lpfc_vport
*vport
,
186 struct lpfc_nodelist
*ndlp
,
191 struct lpfc_fast_path_event
*fast_path_evt
;
194 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
198 fast_path_evt
->un
.queue_depth_evt
.scsi_event
.event_type
=
200 fast_path_evt
->un
.queue_depth_evt
.scsi_event
.subcategory
=
201 LPFC_EVENT_VARQUEDEPTH
;
203 /* Report all luns with change in queue depth */
204 fast_path_evt
->un
.queue_depth_evt
.scsi_event
.lun
= lun
;
205 if (ndlp
&& NLP_CHK_NODE_ACT(ndlp
)) {
206 memcpy(&fast_path_evt
->un
.queue_depth_evt
.scsi_event
.wwpn
,
207 &ndlp
->nlp_portname
, sizeof(struct lpfc_name
));
208 memcpy(&fast_path_evt
->un
.queue_depth_evt
.scsi_event
.wwnn
,
209 &ndlp
->nlp_nodename
, sizeof(struct lpfc_name
));
212 fast_path_evt
->un
.queue_depth_evt
.oldval
= old_val
;
213 fast_path_evt
->un
.queue_depth_evt
.newval
= new_val
;
214 fast_path_evt
->vport
= vport
;
216 fast_path_evt
->work_evt
.evt
= LPFC_EVT_FASTPATH_MGMT_EVT
;
217 spin_lock_irqsave(&phba
->hbalock
, flags
);
218 list_add_tail(&fast_path_evt
->work_evt
.evt_listp
, &phba
->work_list
);
219 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
220 lpfc_worker_wake_up(phba
);
226 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
227 * @phba: The Hba for which this call is being executed.
229 * This routine is called when there is resource error in driver or firmware.
230 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
231 * posts at most 1 event each second. This routine wakes up worker thread of
232 * @phba to process WORKER_RAM_DOWN_EVENT event.
234 * This routine should be called with no lock held.
237 lpfc_rampdown_queue_depth(struct lpfc_hba
*phba
)
242 spin_lock_irqsave(&phba
->hbalock
, flags
);
243 atomic_inc(&phba
->num_rsrc_err
);
244 phba
->last_rsrc_error_time
= jiffies
;
246 if ((phba
->last_ramp_down_time
+ QUEUE_RAMP_DOWN_INTERVAL
) > jiffies
) {
247 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
251 phba
->last_ramp_down_time
= jiffies
;
253 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
255 spin_lock_irqsave(&phba
->pport
->work_port_lock
, flags
);
256 evt_posted
= phba
->pport
->work_port_events
& WORKER_RAMP_DOWN_QUEUE
;
258 phba
->pport
->work_port_events
|= WORKER_RAMP_DOWN_QUEUE
;
259 spin_unlock_irqrestore(&phba
->pport
->work_port_lock
, flags
);
262 lpfc_worker_wake_up(phba
);
267 * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread
268 * @phba: The Hba for which this call is being executed.
270 * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine
271 * post at most 1 event every 5 minute after last_ramp_up_time or
272 * last_rsrc_error_time. This routine wakes up worker thread of @phba
273 * to process WORKER_RAM_DOWN_EVENT event.
275 * This routine should be called with no lock held.
278 lpfc_rampup_queue_depth(struct lpfc_vport
*vport
,
279 uint32_t queue_depth
)
282 struct lpfc_hba
*phba
= vport
->phba
;
284 atomic_inc(&phba
->num_cmd_success
);
286 if (vport
->cfg_lun_queue_depth
<= queue_depth
)
288 spin_lock_irqsave(&phba
->hbalock
, flags
);
289 if (((phba
->last_ramp_up_time
+ QUEUE_RAMP_UP_INTERVAL
) > jiffies
) ||
290 ((phba
->last_rsrc_error_time
+ QUEUE_RAMP_UP_INTERVAL
) > jiffies
)) {
291 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
294 phba
->last_ramp_up_time
= jiffies
;
295 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
297 spin_lock_irqsave(&phba
->pport
->work_port_lock
, flags
);
298 evt_posted
= phba
->pport
->work_port_events
& WORKER_RAMP_UP_QUEUE
;
300 phba
->pport
->work_port_events
|= WORKER_RAMP_UP_QUEUE
;
301 spin_unlock_irqrestore(&phba
->pport
->work_port_lock
, flags
);
304 lpfc_worker_wake_up(phba
);
309 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
310 * @phba: The Hba for which this call is being executed.
312 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
313 * thread.This routine reduces queue depth for all scsi device on each vport
314 * associated with @phba.
317 lpfc_ramp_down_queue_handler(struct lpfc_hba
*phba
)
319 struct lpfc_vport
**vports
;
320 struct Scsi_Host
*shost
;
321 struct scsi_device
*sdev
;
322 unsigned long new_queue_depth
, old_queue_depth
;
323 unsigned long num_rsrc_err
, num_cmd_success
;
325 struct lpfc_rport_data
*rdata
;
327 num_rsrc_err
= atomic_read(&phba
->num_rsrc_err
);
328 num_cmd_success
= atomic_read(&phba
->num_cmd_success
);
330 vports
= lpfc_create_vport_work_array(phba
);
332 for (i
= 0; i
<= phba
->max_vports
&& vports
[i
] != NULL
; i
++) {
333 shost
= lpfc_shost_from_vport(vports
[i
]);
334 shost_for_each_device(sdev
, shost
) {
336 sdev
->queue_depth
* num_rsrc_err
/
337 (num_rsrc_err
+ num_cmd_success
);
338 if (!new_queue_depth
)
339 new_queue_depth
= sdev
->queue_depth
- 1;
341 new_queue_depth
= sdev
->queue_depth
-
343 old_queue_depth
= sdev
->queue_depth
;
344 if (sdev
->ordered_tags
)
345 scsi_adjust_queue_depth(sdev
,
349 scsi_adjust_queue_depth(sdev
,
352 rdata
= sdev
->hostdata
;
354 lpfc_send_sdev_queuedepth_change_event(
357 sdev
->lun
, old_queue_depth
,
361 lpfc_destroy_vport_work_array(phba
, vports
);
362 atomic_set(&phba
->num_rsrc_err
, 0);
363 atomic_set(&phba
->num_cmd_success
, 0);
367 * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler
368 * @phba: The Hba for which this call is being executed.
370 * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker
371 * thread.This routine increases queue depth for all scsi device on each vport
372 * associated with @phba by 1. This routine also sets @phba num_rsrc_err and
373 * num_cmd_success to zero.
376 lpfc_ramp_up_queue_handler(struct lpfc_hba
*phba
)
378 struct lpfc_vport
**vports
;
379 struct Scsi_Host
*shost
;
380 struct scsi_device
*sdev
;
382 struct lpfc_rport_data
*rdata
;
384 vports
= lpfc_create_vport_work_array(phba
);
386 for (i
= 0; i
<= phba
->max_vports
&& vports
[i
] != NULL
; i
++) {
387 shost
= lpfc_shost_from_vport(vports
[i
]);
388 shost_for_each_device(sdev
, shost
) {
389 if (vports
[i
]->cfg_lun_queue_depth
<=
392 if (sdev
->ordered_tags
)
393 scsi_adjust_queue_depth(sdev
,
395 sdev
->queue_depth
+1);
397 scsi_adjust_queue_depth(sdev
,
399 sdev
->queue_depth
+1);
400 rdata
= sdev
->hostdata
;
402 lpfc_send_sdev_queuedepth_change_event(
406 sdev
->queue_depth
- 1,
410 lpfc_destroy_vport_work_array(phba
, vports
);
411 atomic_set(&phba
->num_rsrc_err
, 0);
412 atomic_set(&phba
->num_cmd_success
, 0);
416 * lpfc_scsi_dev_block - set all scsi hosts to block state
417 * @phba: Pointer to HBA context object.
419 * This function walks vport list and set each SCSI host to block state
420 * by invoking fc_remote_port_delete() routine. This function is invoked
421 * with EEH when device's PCI slot has been permanently disabled.
424 lpfc_scsi_dev_block(struct lpfc_hba
*phba
)
426 struct lpfc_vport
**vports
;
427 struct Scsi_Host
*shost
;
428 struct scsi_device
*sdev
;
429 struct fc_rport
*rport
;
432 vports
= lpfc_create_vport_work_array(phba
);
434 for (i
= 0; i
<= phba
->max_vports
&& vports
[i
] != NULL
; i
++) {
435 shost
= lpfc_shost_from_vport(vports
[i
]);
436 shost_for_each_device(sdev
, shost
) {
437 rport
= starget_to_rport(scsi_target(sdev
));
438 fc_remote_port_delete(rport
);
441 lpfc_destroy_vport_work_array(phba
, vports
);
445 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
446 * @vport: The virtual port for which this call being executed.
447 * @num_to_allocate: The requested number of buffers to allocate.
449 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
450 * the scsi buffer contains all the necessary information needed to initiate
451 * a SCSI I/O. The non-DMAable buffer region contains information to build
452 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
453 * and the initial BPL. In addition to allocating memory, the FCP CMND and
454 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
457 * int - number of scsi buffers that were allocated.
458 * 0 = failure, less than num_to_alloc is a partial failure.
461 lpfc_new_scsi_buf_s3(struct lpfc_vport
*vport
, int num_to_alloc
)
463 struct lpfc_hba
*phba
= vport
->phba
;
464 struct lpfc_scsi_buf
*psb
;
465 struct ulp_bde64
*bpl
;
467 dma_addr_t pdma_phys_fcp_cmd
;
468 dma_addr_t pdma_phys_fcp_rsp
;
469 dma_addr_t pdma_phys_bpl
;
473 for (bcnt
= 0; bcnt
< num_to_alloc
; bcnt
++) {
474 psb
= kzalloc(sizeof(struct lpfc_scsi_buf
), GFP_KERNEL
);
479 * Get memory from the pci pool to map the virt space to pci
480 * bus space for an I/O. The DMA buffer includes space for the
481 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
482 * necessary to support the sg_tablesize.
484 psb
->data
= pci_pool_alloc(phba
->lpfc_scsi_dma_buf_pool
,
485 GFP_KERNEL
, &psb
->dma_handle
);
491 /* Initialize virtual ptrs to dma_buf region. */
492 memset(psb
->data
, 0, phba
->cfg_sg_dma_buf_size
);
494 /* Allocate iotag for psb->cur_iocbq. */
495 iotag
= lpfc_sli_next_iotag(phba
, &psb
->cur_iocbq
);
497 pci_pool_free(phba
->lpfc_scsi_dma_buf_pool
,
498 psb
->data
, psb
->dma_handle
);
502 psb
->cur_iocbq
.iocb_flag
|= LPFC_IO_FCP
;
504 psb
->fcp_cmnd
= psb
->data
;
505 psb
->fcp_rsp
= psb
->data
+ sizeof(struct fcp_cmnd
);
506 psb
->fcp_bpl
= psb
->data
+ sizeof(struct fcp_cmnd
) +
507 sizeof(struct fcp_rsp
);
509 /* Initialize local short-hand pointers. */
511 pdma_phys_fcp_cmd
= psb
->dma_handle
;
512 pdma_phys_fcp_rsp
= psb
->dma_handle
+ sizeof(struct fcp_cmnd
);
513 pdma_phys_bpl
= psb
->dma_handle
+ sizeof(struct fcp_cmnd
) +
514 sizeof(struct fcp_rsp
);
517 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
518 * are sg list bdes. Initialize the first two and leave the
519 * rest for queuecommand.
521 bpl
[0].addrHigh
= le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd
));
522 bpl
[0].addrLow
= le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd
));
523 bpl
[0].tus
.f
.bdeSize
= sizeof(struct fcp_cmnd
);
524 bpl
[0].tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
525 bpl
[0].tus
.w
= le32_to_cpu(bpl
[0].tus
.w
);
527 /* Setup the physical region for the FCP RSP */
528 bpl
[1].addrHigh
= le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp
));
529 bpl
[1].addrLow
= le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp
));
530 bpl
[1].tus
.f
.bdeSize
= sizeof(struct fcp_rsp
);
531 bpl
[1].tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
532 bpl
[1].tus
.w
= le32_to_cpu(bpl
[1].tus
.w
);
535 * Since the IOCB for the FCP I/O is built into this
536 * lpfc_scsi_buf, initialize it with all known data now.
538 iocb
= &psb
->cur_iocbq
.iocb
;
539 iocb
->un
.fcpi64
.bdl
.ulpIoTag32
= 0;
540 if ((phba
->sli_rev
== 3) &&
541 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
)) {
542 /* fill in immediate fcp command BDE */
543 iocb
->un
.fcpi64
.bdl
.bdeFlags
= BUFF_TYPE_BDE_IMMED
;
544 iocb
->un
.fcpi64
.bdl
.bdeSize
= sizeof(struct fcp_cmnd
);
545 iocb
->un
.fcpi64
.bdl
.addrLow
= offsetof(IOCB_t
,
547 iocb
->un
.fcpi64
.bdl
.addrHigh
= 0;
548 iocb
->ulpBdeCount
= 0;
550 /* fill in responce BDE */
551 iocb
->unsli3
.fcp_ext
.rbde
.tus
.f
.bdeFlags
=
553 iocb
->unsli3
.fcp_ext
.rbde
.tus
.f
.bdeSize
=
554 sizeof(struct fcp_rsp
);
555 iocb
->unsli3
.fcp_ext
.rbde
.addrLow
=
556 putPaddrLow(pdma_phys_fcp_rsp
);
557 iocb
->unsli3
.fcp_ext
.rbde
.addrHigh
=
558 putPaddrHigh(pdma_phys_fcp_rsp
);
560 iocb
->un
.fcpi64
.bdl
.bdeFlags
= BUFF_TYPE_BLP_64
;
561 iocb
->un
.fcpi64
.bdl
.bdeSize
=
562 (2 * sizeof(struct ulp_bde64
));
563 iocb
->un
.fcpi64
.bdl
.addrLow
=
564 putPaddrLow(pdma_phys_bpl
);
565 iocb
->un
.fcpi64
.bdl
.addrHigh
=
566 putPaddrHigh(pdma_phys_bpl
);
567 iocb
->ulpBdeCount
= 1;
570 iocb
->ulpClass
= CLASS3
;
571 psb
->status
= IOSTAT_SUCCESS
;
572 /* Put it back into the SCSI buffer list */
573 lpfc_release_scsi_buf_s4(phba
, psb
);
581 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
582 * @phba: pointer to lpfc hba data structure.
583 * @axri: pointer to the fcp xri abort wcqe structure.
585 * This routine is invoked by the worker thread to process a SLI4 fast-path
589 lpfc_sli4_fcp_xri_aborted(struct lpfc_hba
*phba
,
590 struct sli4_wcqe_xri_aborted
*axri
)
592 uint16_t xri
= bf_get(lpfc_wcqe_xa_xri
, axri
);
593 struct lpfc_scsi_buf
*psb
, *next_psb
;
594 unsigned long iflag
= 0;
596 spin_lock_irqsave(&phba
->sli4_hba
.abts_scsi_buf_list_lock
, iflag
);
597 list_for_each_entry_safe(psb
, next_psb
,
598 &phba
->sli4_hba
.lpfc_abts_scsi_buf_list
, list
) {
599 if (psb
->cur_iocbq
.sli4_xritag
== xri
) {
600 list_del(&psb
->list
);
601 psb
->status
= IOSTAT_SUCCESS
;
602 spin_unlock_irqrestore(
603 &phba
->sli4_hba
.abts_scsi_buf_list_lock
,
605 lpfc_release_scsi_buf_s4(phba
, psb
);
609 spin_unlock_irqrestore(&phba
->sli4_hba
.abts_scsi_buf_list_lock
,
614 * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block
615 * @phba: pointer to lpfc hba data structure.
617 * This routine walks the list of scsi buffers that have been allocated and
618 * repost them to the HBA by using SGL block post. This is needed after a
619 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
620 * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
621 * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
623 * Returns: 0 = success, non-zero failure.
626 lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba
*phba
)
628 struct lpfc_scsi_buf
*psb
;
629 int index
, status
, bcnt
= 0, rcnt
= 0, rc
= 0;
632 for (index
= 0; index
< phba
->sli4_hba
.scsi_xri_cnt
; index
++) {
633 psb
= phba
->sli4_hba
.lpfc_scsi_psb_array
[index
];
635 /* Remove from SCSI buffer list */
636 list_del(&psb
->list
);
637 /* Add it to a local SCSI buffer list */
638 list_add_tail(&psb
->list
, &sblist
);
639 if (++rcnt
== LPFC_NEMBED_MBOX_SGL_CNT
) {
644 /* A hole present in the XRI array, need to skip */
647 if (index
== phba
->sli4_hba
.scsi_xri_cnt
- 1)
648 /* End of XRI array for SCSI buffer, complete */
651 /* Continue until collect up to a nembed page worth of sgls */
654 /* Now, post the SCSI buffer list sgls as a block */
655 status
= lpfc_sli4_post_scsi_sgl_block(phba
, &sblist
, bcnt
);
656 /* Reset SCSI buffer count for next round of posting */
658 while (!list_empty(&sblist
)) {
659 list_remove_head(&sblist
, psb
, struct lpfc_scsi_buf
,
662 /* Put this back on the abort scsi list */
663 psb
->status
= IOSTAT_LOCAL_REJECT
;
664 psb
->result
= IOERR_ABORT_REQUESTED
;
667 psb
->status
= IOSTAT_SUCCESS
;
668 /* Put it back into the SCSI buffer list */
669 lpfc_release_scsi_buf_s4(phba
, psb
);
676 * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
677 * @vport: The virtual port for which this call being executed.
678 * @num_to_allocate: The requested number of buffers to allocate.
680 * This routine allocates a scsi buffer for device with SLI-4 interface spec,
681 * the scsi buffer contains all the necessary information needed to initiate
685 * int - number of scsi buffers that were allocated.
686 * 0 = failure, less than num_to_alloc is a partial failure.
689 lpfc_new_scsi_buf_s4(struct lpfc_vport
*vport
, int num_to_alloc
)
691 struct lpfc_hba
*phba
= vport
->phba
;
692 struct lpfc_scsi_buf
*psb
;
693 struct sli4_sge
*sgl
;
695 dma_addr_t pdma_phys_fcp_cmd
;
696 dma_addr_t pdma_phys_fcp_rsp
;
697 dma_addr_t pdma_phys_bpl
, pdma_phys_bpl1
;
698 uint16_t iotag
, last_xritag
= NO_XRI
;
699 int status
= 0, index
;
701 int non_sequential_xri
= 0;
705 for (bcnt
= 0; bcnt
< num_to_alloc
; bcnt
++) {
706 psb
= kzalloc(sizeof(struct lpfc_scsi_buf
), GFP_KERNEL
);
711 * Get memory from the pci pool to map the virt space to pci bus
712 * space for an I/O. The DMA buffer includes space for the
713 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
714 * necessary to support the sg_tablesize.
716 psb
->data
= pci_pool_alloc(phba
->lpfc_scsi_dma_buf_pool
,
717 GFP_KERNEL
, &psb
->dma_handle
);
723 /* Initialize virtual ptrs to dma_buf region. */
724 memset(psb
->data
, 0, phba
->cfg_sg_dma_buf_size
);
726 /* Allocate iotag for psb->cur_iocbq. */
727 iotag
= lpfc_sli_next_iotag(phba
, &psb
->cur_iocbq
);
733 psb
->cur_iocbq
.sli4_xritag
= lpfc_sli4_next_xritag(phba
);
734 if (psb
->cur_iocbq
.sli4_xritag
== NO_XRI
) {
735 pci_pool_free(phba
->lpfc_scsi_dma_buf_pool
,
736 psb
->data
, psb
->dma_handle
);
740 if (last_xritag
!= NO_XRI
741 && psb
->cur_iocbq
.sli4_xritag
!= (last_xritag
+1)) {
742 non_sequential_xri
= 1;
744 list_add_tail(&psb
->list
, &sblist
);
745 last_xritag
= psb
->cur_iocbq
.sli4_xritag
;
747 index
= phba
->sli4_hba
.scsi_xri_cnt
++;
748 psb
->cur_iocbq
.iocb_flag
|= LPFC_IO_FCP
;
750 psb
->fcp_bpl
= psb
->data
;
751 psb
->fcp_cmnd
= (psb
->data
+ phba
->cfg_sg_dma_buf_size
)
752 - (sizeof(struct fcp_cmnd
) + sizeof(struct fcp_rsp
));
753 psb
->fcp_rsp
= (struct fcp_rsp
*)((uint8_t *)psb
->fcp_cmnd
+
754 sizeof(struct fcp_cmnd
));
756 /* Initialize local short-hand pointers. */
757 sgl
= (struct sli4_sge
*)psb
->fcp_bpl
;
758 pdma_phys_bpl
= psb
->dma_handle
;
760 (psb
->dma_handle
+ phba
->cfg_sg_dma_buf_size
)
761 - (sizeof(struct fcp_cmnd
) + sizeof(struct fcp_rsp
));
762 pdma_phys_fcp_rsp
= pdma_phys_fcp_cmd
+ sizeof(struct fcp_cmnd
);
765 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
766 * are sg list bdes. Initialize the first two and leave the
767 * rest for queuecommand.
769 sgl
->addr_hi
= cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd
));
770 sgl
->addr_lo
= cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd
));
771 bf_set(lpfc_sli4_sge_len
, sgl
, sizeof(struct fcp_cmnd
));
772 bf_set(lpfc_sli4_sge_last
, sgl
, 0);
773 sgl
->word2
= cpu_to_le32(sgl
->word2
);
774 sgl
->word3
= cpu_to_le32(sgl
->word3
);
777 /* Setup the physical region for the FCP RSP */
778 sgl
->addr_hi
= cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp
));
779 sgl
->addr_lo
= cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp
));
780 bf_set(lpfc_sli4_sge_len
, sgl
, sizeof(struct fcp_rsp
));
781 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
782 sgl
->word2
= cpu_to_le32(sgl
->word2
);
783 sgl
->word3
= cpu_to_le32(sgl
->word3
);
786 * Since the IOCB for the FCP I/O is built into this
787 * lpfc_scsi_buf, initialize it with all known data now.
789 iocb
= &psb
->cur_iocbq
.iocb
;
790 iocb
->un
.fcpi64
.bdl
.ulpIoTag32
= 0;
791 iocb
->un
.fcpi64
.bdl
.bdeFlags
= BUFF_TYPE_BDE_64
;
792 /* setting the BLP size to 2 * sizeof BDE may not be correct.
793 * We are setting the bpl to point to out sgl. An sgl's
794 * entries are 16 bytes, a bpl entries are 12 bytes.
796 iocb
->un
.fcpi64
.bdl
.bdeSize
= sizeof(struct fcp_cmnd
);
797 iocb
->un
.fcpi64
.bdl
.addrLow
= putPaddrLow(pdma_phys_fcp_cmd
);
798 iocb
->un
.fcpi64
.bdl
.addrHigh
= putPaddrHigh(pdma_phys_fcp_cmd
);
799 iocb
->ulpBdeCount
= 1;
801 iocb
->ulpClass
= CLASS3
;
802 if (phba
->cfg_sg_dma_buf_size
> SGL_PAGE_SIZE
)
803 pdma_phys_bpl1
= pdma_phys_bpl
+ SGL_PAGE_SIZE
;
806 psb
->dma_phys_bpl
= pdma_phys_bpl
;
807 phba
->sli4_hba
.lpfc_scsi_psb_array
[index
] = psb
;
808 if (non_sequential_xri
) {
809 status
= lpfc_sli4_post_sgl(phba
, pdma_phys_bpl
,
811 psb
->cur_iocbq
.sli4_xritag
);
813 /* Put this back on the abort scsi list */
814 psb
->status
= IOSTAT_LOCAL_REJECT
;
815 psb
->result
= IOERR_ABORT_REQUESTED
;
818 psb
->status
= IOSTAT_SUCCESS
;
819 /* Put it back into the SCSI buffer list */
820 lpfc_release_scsi_buf_s4(phba
, psb
);
825 status
= lpfc_sli4_post_scsi_sgl_block(phba
, &sblist
, bcnt
);
826 /* Reset SCSI buffer count for next round of posting */
827 while (!list_empty(&sblist
)) {
828 list_remove_head(&sblist
, psb
, struct lpfc_scsi_buf
,
831 /* Put this back on the abort scsi list */
832 psb
->status
= IOSTAT_LOCAL_REJECT
;
833 psb
->result
= IOERR_ABORT_REQUESTED
;
836 psb
->status
= IOSTAT_SUCCESS
;
837 /* Put it back into the SCSI buffer list */
838 lpfc_release_scsi_buf_s4(phba
, psb
);
842 return bcnt
+ non_sequential_xri
- rc
;
846 * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
847 * @vport: The virtual port for which this call being executed.
848 * @num_to_allocate: The requested number of buffers to allocate.
850 * This routine wraps the actual SCSI buffer allocator function pointer from
851 * the lpfc_hba struct.
854 * int - number of scsi buffers that were allocated.
855 * 0 = failure, less than num_to_alloc is a partial failure.
858 lpfc_new_scsi_buf(struct lpfc_vport
*vport
, int num_to_alloc
)
860 return vport
->phba
->lpfc_new_scsi_buf(vport
, num_to_alloc
);
864 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
865 * @phba: The HBA for which this call is being executed.
867 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
868 * and returns to caller.
872 * Pointer to lpfc_scsi_buf - Success
874 static struct lpfc_scsi_buf
*
875 lpfc_get_scsi_buf(struct lpfc_hba
* phba
)
877 struct lpfc_scsi_buf
* lpfc_cmd
= NULL
;
878 struct list_head
*scsi_buf_list
= &phba
->lpfc_scsi_buf_list
;
879 unsigned long iflag
= 0;
881 spin_lock_irqsave(&phba
->scsi_buf_list_lock
, iflag
);
882 list_remove_head(scsi_buf_list
, lpfc_cmd
, struct lpfc_scsi_buf
, list
);
884 lpfc_cmd
->seg_cnt
= 0;
885 lpfc_cmd
->nonsg_phys
= 0;
886 lpfc_cmd
->prot_seg_cnt
= 0;
888 spin_unlock_irqrestore(&phba
->scsi_buf_list_lock
, iflag
);
893 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
894 * @phba: The Hba for which this call is being executed.
895 * @psb: The scsi buffer which is being released.
897 * This routine releases @psb scsi buffer by adding it to tail of @phba
898 * lpfc_scsi_buf_list list.
901 lpfc_release_scsi_buf_s3(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
903 unsigned long iflag
= 0;
905 spin_lock_irqsave(&phba
->scsi_buf_list_lock
, iflag
);
907 list_add_tail(&psb
->list
, &phba
->lpfc_scsi_buf_list
);
908 spin_unlock_irqrestore(&phba
->scsi_buf_list_lock
, iflag
);
912 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
913 * @phba: The Hba for which this call is being executed.
914 * @psb: The scsi buffer which is being released.
916 * This routine releases @psb scsi buffer by adding it to tail of @phba
917 * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer
918 * and cannot be reused for at least RA_TOV amount of time if it was
922 lpfc_release_scsi_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
924 unsigned long iflag
= 0;
926 if (psb
->status
== IOSTAT_LOCAL_REJECT
927 && psb
->result
== IOERR_ABORT_REQUESTED
) {
928 spin_lock_irqsave(&phba
->sli4_hba
.abts_scsi_buf_list_lock
,
931 list_add_tail(&psb
->list
,
932 &phba
->sli4_hba
.lpfc_abts_scsi_buf_list
);
933 spin_unlock_irqrestore(&phba
->sli4_hba
.abts_scsi_buf_list_lock
,
937 spin_lock_irqsave(&phba
->scsi_buf_list_lock
, iflag
);
939 list_add_tail(&psb
->list
, &phba
->lpfc_scsi_buf_list
);
940 spin_unlock_irqrestore(&phba
->scsi_buf_list_lock
, iflag
);
945 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
946 * @phba: The Hba for which this call is being executed.
947 * @psb: The scsi buffer which is being released.
949 * This routine releases @psb scsi buffer by adding it to tail of @phba
950 * lpfc_scsi_buf_list list.
953 lpfc_release_scsi_buf(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
956 phba
->lpfc_release_scsi_buf(phba
, psb
);
960 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
961 * @phba: The Hba for which this call is being executed.
962 * @lpfc_cmd: The scsi buffer which is going to be mapped.
964 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
965 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
966 * through sg elements and format the bdea. This routine also initializes all
967 * IOCB fields which are dependent on scsi command request buffer.
974 lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
976 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
977 struct scatterlist
*sgel
= NULL
;
978 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
979 struct ulp_bde64
*bpl
= lpfc_cmd
->fcp_bpl
;
980 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
981 struct ulp_bde64
*data_bde
= iocb_cmd
->unsli3
.fcp_ext
.dbde
;
983 uint32_t num_bde
= 0;
984 int nseg
, datadir
= scsi_cmnd
->sc_data_direction
;
987 * There are three possibilities here - use scatter-gather segment, use
988 * the single mapping, or neither. Start the lpfc command prep by
989 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
993 if (scsi_sg_count(scsi_cmnd
)) {
995 * The driver stores the segment count returned from pci_map_sg
996 * because this a count of dma-mappings used to map the use_sg
997 * pages. They are not guaranteed to be the same for those
998 * architectures that implement an IOMMU.
1001 nseg
= dma_map_sg(&phba
->pcidev
->dev
, scsi_sglist(scsi_cmnd
),
1002 scsi_sg_count(scsi_cmnd
), datadir
);
1003 if (unlikely(!nseg
))
1006 lpfc_cmd
->seg_cnt
= nseg
;
1007 if (lpfc_cmd
->seg_cnt
> phba
->cfg_sg_seg_cnt
) {
1008 printk(KERN_ERR
"%s: Too many sg segments from "
1009 "dma_map_sg. Config %d, seg_cnt %d\n",
1010 __func__
, phba
->cfg_sg_seg_cnt
,
1012 scsi_dma_unmap(scsi_cmnd
);
1017 * The driver established a maximum scatter-gather segment count
1018 * during probe that limits the number of sg elements in any
1019 * single scsi command. Just run through the seg_cnt and format
1021 * When using SLI-3 the driver will try to fit all the BDEs into
1022 * the IOCB. If it can't then the BDEs get added to a BPL as it
1023 * does for SLI-2 mode.
1025 scsi_for_each_sg(scsi_cmnd
, sgel
, nseg
, num_bde
) {
1026 physaddr
= sg_dma_address(sgel
);
1027 if (phba
->sli_rev
== 3 &&
1028 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
) &&
1029 nseg
<= LPFC_EXT_DATA_BDE_COUNT
) {
1030 data_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1031 data_bde
->tus
.f
.bdeSize
= sg_dma_len(sgel
);
1032 data_bde
->addrLow
= putPaddrLow(physaddr
);
1033 data_bde
->addrHigh
= putPaddrHigh(physaddr
);
1036 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1037 bpl
->tus
.f
.bdeSize
= sg_dma_len(sgel
);
1038 bpl
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1040 le32_to_cpu(putPaddrLow(physaddr
));
1042 le32_to_cpu(putPaddrHigh(physaddr
));
1049 * Finish initializing those IOCB fields that are dependent on the
1050 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1051 * explicitly reinitialized and for SLI-3 the extended bde count is
1052 * explicitly reinitialized since all iocb memory resources are reused.
1054 if (phba
->sli_rev
== 3 &&
1055 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
)) {
1056 if (num_bde
> LPFC_EXT_DATA_BDE_COUNT
) {
1058 * The extended IOCB format can only fit 3 BDE or a BPL.
1059 * This I/O has more than 3 BDE so the 1st data bde will
1060 * be a BPL that is filled in here.
1062 physaddr
= lpfc_cmd
->dma_handle
;
1063 data_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BLP_64
;
1064 data_bde
->tus
.f
.bdeSize
= (num_bde
*
1065 sizeof(struct ulp_bde64
));
1066 physaddr
+= (sizeof(struct fcp_cmnd
) +
1067 sizeof(struct fcp_rsp
) +
1068 (2 * sizeof(struct ulp_bde64
)));
1069 data_bde
->addrHigh
= putPaddrHigh(physaddr
);
1070 data_bde
->addrLow
= putPaddrLow(physaddr
);
1071 /* ebde count includes the responce bde and data bpl */
1072 iocb_cmd
->unsli3
.fcp_ext
.ebde_count
= 2;
1074 /* ebde count includes the responce bde and data bdes */
1075 iocb_cmd
->unsli3
.fcp_ext
.ebde_count
= (num_bde
+ 1);
1078 iocb_cmd
->un
.fcpi64
.bdl
.bdeSize
=
1079 ((num_bde
+ 2) * sizeof(struct ulp_bde64
));
1081 fcp_cmnd
->fcpDl
= cpu_to_be32(scsi_bufflen(scsi_cmnd
));
1084 * Due to difference in data length between DIF/non-DIF paths,
1085 * we need to set word 4 of IOCB here
1087 iocb_cmd
->un
.fcpi
.fcpi_parm
= scsi_bufflen(scsi_cmnd
);
1092 * Given a scsi cmnd, determine the BlockGuard profile to be used
1096 lpfc_sc_to_sli_prof(struct scsi_cmnd
*sc
)
1098 uint8_t guard_type
= scsi_host_get_guard(sc
->device
->host
);
1099 uint8_t ret_prof
= LPFC_PROF_INVALID
;
1101 if (guard_type
== SHOST_DIX_GUARD_IP
) {
1102 switch (scsi_get_prot_op(sc
)) {
1103 case SCSI_PROT_READ_INSERT
:
1104 case SCSI_PROT_WRITE_STRIP
:
1105 ret_prof
= LPFC_PROF_AST2
;
1108 case SCSI_PROT_READ_STRIP
:
1109 case SCSI_PROT_WRITE_INSERT
:
1110 ret_prof
= LPFC_PROF_A1
;
1113 case SCSI_PROT_READ_CONVERT
:
1114 case SCSI_PROT_WRITE_CONVERT
:
1115 ret_prof
= LPFC_PROF_AST1
;
1118 case SCSI_PROT_READ_PASS
:
1119 case SCSI_PROT_WRITE_PASS
:
1120 case SCSI_PROT_NORMAL
:
1122 printk(KERN_ERR
"Bad op/guard:%d/%d combination\n",
1123 scsi_get_prot_op(sc
), guard_type
);
1127 } else if (guard_type
== SHOST_DIX_GUARD_CRC
) {
1128 switch (scsi_get_prot_op(sc
)) {
1129 case SCSI_PROT_READ_STRIP
:
1130 case SCSI_PROT_WRITE_INSERT
:
1131 ret_prof
= LPFC_PROF_A1
;
1134 case SCSI_PROT_READ_PASS
:
1135 case SCSI_PROT_WRITE_PASS
:
1136 ret_prof
= LPFC_PROF_C1
;
1139 case SCSI_PROT_READ_CONVERT
:
1140 case SCSI_PROT_WRITE_CONVERT
:
1141 case SCSI_PROT_READ_INSERT
:
1142 case SCSI_PROT_WRITE_STRIP
:
1143 case SCSI_PROT_NORMAL
:
1145 printk(KERN_ERR
"Bad op/guard:%d/%d combination\n",
1146 scsi_get_prot_op(sc
), guard_type
);
1150 /* unsupported format */
1157 struct scsi_dif_tuple
{
1158 __be16 guard_tag
; /* Checksum */
1159 __be16 app_tag
; /* Opaque storage */
1160 __be32 ref_tag
; /* Target LBA or indirect LBA */
1163 static inline unsigned
1164 lpfc_cmd_blksize(struct scsi_cmnd
*sc
)
1166 return sc
->device
->sector_size
;
1170 * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command
1171 * @sc: in: SCSI command
1172 * @apptagmask: out: app tag mask
1173 * @apptagval: out: app tag value
1174 * @reftag: out: ref tag (reference tag)
1177 * Extract DIF parameters from the command if possible. Otherwise,
1178 * use default parameters.
1182 lpfc_get_cmd_dif_parms(struct scsi_cmnd
*sc
, uint16_t *apptagmask
,
1183 uint16_t *apptagval
, uint32_t *reftag
)
1185 struct scsi_dif_tuple
*spt
;
1186 unsigned char op
= scsi_get_prot_op(sc
);
1187 unsigned int protcnt
= scsi_prot_sg_count(sc
);
1190 if (protcnt
&& (op
== SCSI_PROT_WRITE_STRIP
||
1191 op
== SCSI_PROT_WRITE_PASS
||
1192 op
== SCSI_PROT_WRITE_CONVERT
)) {
1195 spt
= page_address(sg_page(scsi_prot_sglist(sc
))) +
1196 scsi_prot_sglist(sc
)[0].offset
;
1199 *reftag
= cpu_to_be32(spt
->ref_tag
);
1202 /* SBC defines ref tag to be lower 32bits of LBA */
1203 *reftag
= (uint32_t) (0xffffffff & scsi_get_lba(sc
));
1210 * This function sets up buffer list for protection groups of
1211 * type LPFC_PG_TYPE_NO_DIF
1213 * This is usually used when the HBA is instructed to generate
1214 * DIFs and insert them into data stream (or strip DIF from
1215 * incoming data stream)
1217 * The buffer list consists of just one protection group described
1219 * +-------------------------+
1220 * start of prot group --> | PDE_1 |
1221 * +-------------------------+
1223 * +-------------------------+
1224 * |more Data BDE's ... (opt)|
1225 * +-------------------------+
1227 * @sc: pointer to scsi command we're working on
1228 * @bpl: pointer to buffer list for protection groups
1229 * @datacnt: number of segments of data that have been dma mapped
1231 * Note: Data s/g buffers have been dma mapped
1234 lpfc_bg_setup_bpl(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
,
1235 struct ulp_bde64
*bpl
, int datasegcnt
)
1237 struct scatterlist
*sgde
= NULL
; /* s/g data entry */
1238 struct lpfc_pde
*pde1
= NULL
;
1239 dma_addr_t physaddr
;
1240 int i
= 0, num_bde
= 0;
1241 int datadir
= sc
->sc_data_direction
;
1242 int prof
= LPFC_PROF_INVALID
;
1245 uint16_t apptagmask
, apptagval
;
1247 pde1
= (struct lpfc_pde
*) bpl
;
1248 prof
= lpfc_sc_to_sli_prof(sc
);
1250 if (prof
== LPFC_PROF_INVALID
)
1253 /* extract some info from the scsi command for PDE1*/
1254 blksize
= lpfc_cmd_blksize(sc
);
1255 lpfc_get_cmd_dif_parms(sc
, &apptagmask
, &apptagval
, &reftag
);
1257 /* setup PDE1 with what we have */
1258 lpfc_pde_set_bg_parms(pde1
, LPFC_PDE1_DESCRIPTOR
, prof
, blksize
,
1260 lpfc_pde_set_dif_parms(pde1
, apptagmask
, apptagval
, reftag
);
1265 /* assumption: caller has already run dma_map_sg on command data */
1266 scsi_for_each_sg(sc
, sgde
, datasegcnt
, i
) {
1267 physaddr
= sg_dma_address(sgde
);
1268 bpl
->addrLow
= le32_to_cpu(putPaddrLow(physaddr
));
1269 bpl
->addrHigh
= le32_to_cpu(putPaddrHigh(physaddr
));
1270 bpl
->tus
.f
.bdeSize
= sg_dma_len(sgde
);
1271 if (datadir
== DMA_TO_DEVICE
)
1272 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1274 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64I
;
1275 bpl
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1285 * This function sets up buffer list for protection groups of
1286 * type LPFC_PG_TYPE_DIF_BUF
1288 * This is usually used when DIFs are in their own buffers,
1289 * separate from the data. The HBA can then by instructed
1290 * to place the DIFs in the outgoing stream. For read operations,
1291 * The HBA could extract the DIFs and place it in DIF buffers.
1293 * The buffer list for this type consists of one or more of the
1294 * protection groups described below:
1295 * +-------------------------+
1296 * start of first prot group --> | PDE_1 |
1297 * +-------------------------+
1298 * | PDE_3 (Prot BDE) |
1299 * +-------------------------+
1301 * +-------------------------+
1302 * |more Data BDE's ... (opt)|
1303 * +-------------------------+
1304 * start of new prot group --> | PDE_1 |
1305 * +-------------------------+
1307 * +-------------------------+
1309 * @sc: pointer to scsi command we're working on
1310 * @bpl: pointer to buffer list for protection groups
1311 * @datacnt: number of segments of data that have been dma mapped
1312 * @protcnt: number of segment of protection data that have been dma mapped
1314 * Note: It is assumed that both data and protection s/g buffers have been
1318 lpfc_bg_setup_bpl_prot(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
,
1319 struct ulp_bde64
*bpl
, int datacnt
, int protcnt
)
1321 struct scatterlist
*sgde
= NULL
; /* s/g data entry */
1322 struct scatterlist
*sgpe
= NULL
; /* s/g prot entry */
1323 struct lpfc_pde
*pde1
= NULL
;
1324 struct ulp_bde64
*prot_bde
= NULL
;
1325 dma_addr_t dataphysaddr
, protphysaddr
;
1326 unsigned short curr_data
= 0, curr_prot
= 0;
1327 unsigned int split_offset
, protgroup_len
;
1328 unsigned int protgrp_blks
, protgrp_bytes
;
1329 unsigned int remainder
, subtotal
;
1330 int prof
= LPFC_PROF_INVALID
;
1331 int datadir
= sc
->sc_data_direction
;
1332 unsigned char pgdone
= 0, alldone
= 0;
1335 uint16_t apptagmask
, apptagval
;
1338 sgpe
= scsi_prot_sglist(sc
);
1339 sgde
= scsi_sglist(sc
);
1341 if (!sgpe
|| !sgde
) {
1342 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1343 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
1348 prof
= lpfc_sc_to_sli_prof(sc
);
1349 if (prof
== LPFC_PROF_INVALID
)
1352 /* extract some info from the scsi command for PDE1*/
1353 blksize
= lpfc_cmd_blksize(sc
);
1354 lpfc_get_cmd_dif_parms(sc
, &apptagmask
, &apptagval
, &reftag
);
1358 /* setup the first PDE_1 */
1359 pde1
= (struct lpfc_pde
*) bpl
;
1361 lpfc_pde_set_bg_parms(pde1
, LPFC_PDE1_DESCRIPTOR
, prof
, blksize
,
1363 lpfc_pde_set_dif_parms(pde1
, apptagmask
, apptagval
, reftag
);
1368 /* setup the first BDE that points to protection buffer */
1369 prot_bde
= (struct ulp_bde64
*) bpl
;
1370 protphysaddr
= sg_dma_address(sgpe
);
1371 prot_bde
->addrLow
= le32_to_cpu(putPaddrLow(protphysaddr
));
1372 prot_bde
->addrHigh
= le32_to_cpu(putPaddrHigh(protphysaddr
));
1373 protgroup_len
= sg_dma_len(sgpe
);
1376 /* must be integer multiple of the DIF block length */
1377 BUG_ON(protgroup_len
% 8);
1379 protgrp_blks
= protgroup_len
/ 8;
1380 protgrp_bytes
= protgrp_blks
* blksize
;
1382 prot_bde
->tus
.f
.bdeSize
= protgroup_len
;
1383 if (datadir
== DMA_TO_DEVICE
)
1384 prot_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1386 prot_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64I
;
1387 prot_bde
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1392 /* setup BDE's for data blocks associated with DIF data */
1394 subtotal
= 0; /* total bytes processed for current prot grp */
1397 printk(KERN_ERR
"%s Invalid data segment\n",
1402 dataphysaddr
= sg_dma_address(sgde
) + split_offset
;
1403 bpl
->addrLow
= le32_to_cpu(putPaddrLow(dataphysaddr
));
1404 bpl
->addrHigh
= le32_to_cpu(putPaddrHigh(dataphysaddr
));
1406 remainder
= sg_dma_len(sgde
) - split_offset
;
1408 if ((subtotal
+ remainder
) <= protgrp_bytes
) {
1409 /* we can use this whole buffer */
1410 bpl
->tus
.f
.bdeSize
= remainder
;
1413 if ((subtotal
+ remainder
) == protgrp_bytes
)
1416 /* must split this buffer with next prot grp */
1417 bpl
->tus
.f
.bdeSize
= protgrp_bytes
- subtotal
;
1418 split_offset
+= bpl
->tus
.f
.bdeSize
;
1421 subtotal
+= bpl
->tus
.f
.bdeSize
;
1423 if (datadir
== DMA_TO_DEVICE
)
1424 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1426 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64I
;
1427 bpl
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1435 /* Move to the next s/g segment if possible */
1436 sgde
= sg_next(sgde
);
1440 if (curr_prot
== protcnt
) {
1442 } else if (curr_prot
< protcnt
) {
1443 /* advance to next prot buffer */
1444 sgpe
= sg_next(sgpe
);
1447 /* update the reference tag */
1448 reftag
+= protgrp_blks
;
1450 /* if we're here, we have a bug */
1451 printk(KERN_ERR
"BLKGRD: bug in %s\n", __func__
);
1462 * Given a SCSI command that supports DIF, determine composition of protection
1463 * groups involved in setting up buffer lists
1466 * for DIF (for both read and write)
1469 lpfc_prot_group_type(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
)
1471 int ret
= LPFC_PG_TYPE_INVALID
;
1472 unsigned char op
= scsi_get_prot_op(sc
);
1475 case SCSI_PROT_READ_STRIP
:
1476 case SCSI_PROT_WRITE_INSERT
:
1477 ret
= LPFC_PG_TYPE_NO_DIF
;
1479 case SCSI_PROT_READ_INSERT
:
1480 case SCSI_PROT_WRITE_STRIP
:
1481 case SCSI_PROT_READ_PASS
:
1482 case SCSI_PROT_WRITE_PASS
:
1483 case SCSI_PROT_WRITE_CONVERT
:
1484 case SCSI_PROT_READ_CONVERT
:
1485 ret
= LPFC_PG_TYPE_DIF_BUF
;
1488 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1489 "9021 Unsupported protection op:%d\n", op
);
1497 * This is the protection/DIF aware version of
1498 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
1499 * two functions eventually, but for now, it's here
1502 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba
*phba
,
1503 struct lpfc_scsi_buf
*lpfc_cmd
)
1505 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
1506 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
1507 struct ulp_bde64
*bpl
= lpfc_cmd
->fcp_bpl
;
1508 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
1509 uint32_t num_bde
= 0;
1510 int datasegcnt
, protsegcnt
, datadir
= scsi_cmnd
->sc_data_direction
;
1511 int prot_group_type
= 0;
1516 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
1517 * fcp_rsp regions to the first data bde entry
1520 if (scsi_sg_count(scsi_cmnd
)) {
1522 * The driver stores the segment count returned from pci_map_sg
1523 * because this a count of dma-mappings used to map the use_sg
1524 * pages. They are not guaranteed to be the same for those
1525 * architectures that implement an IOMMU.
1527 datasegcnt
= dma_map_sg(&phba
->pcidev
->dev
,
1528 scsi_sglist(scsi_cmnd
),
1529 scsi_sg_count(scsi_cmnd
), datadir
);
1530 if (unlikely(!datasegcnt
))
1533 lpfc_cmd
->seg_cnt
= datasegcnt
;
1534 if (lpfc_cmd
->seg_cnt
> phba
->cfg_sg_seg_cnt
) {
1535 printk(KERN_ERR
"%s: Too many sg segments from "
1536 "dma_map_sg. Config %d, seg_cnt %d\n",
1537 __func__
, phba
->cfg_sg_seg_cnt
,
1539 scsi_dma_unmap(scsi_cmnd
);
1543 prot_group_type
= lpfc_prot_group_type(phba
, scsi_cmnd
);
1545 switch (prot_group_type
) {
1546 case LPFC_PG_TYPE_NO_DIF
:
1547 num_bde
= lpfc_bg_setup_bpl(phba
, scsi_cmnd
, bpl
,
1549 /* we shoud have 2 or more entries in buffer list */
1553 case LPFC_PG_TYPE_DIF_BUF
:{
1555 * This type indicates that protection buffers are
1556 * passed to the driver, so that needs to be prepared
1559 protsegcnt
= dma_map_sg(&phba
->pcidev
->dev
,
1560 scsi_prot_sglist(scsi_cmnd
),
1561 scsi_prot_sg_count(scsi_cmnd
), datadir
);
1562 if (unlikely(!protsegcnt
)) {
1563 scsi_dma_unmap(scsi_cmnd
);
1567 lpfc_cmd
->prot_seg_cnt
= protsegcnt
;
1568 if (lpfc_cmd
->prot_seg_cnt
1569 > phba
->cfg_prot_sg_seg_cnt
) {
1570 printk(KERN_ERR
"%s: Too many prot sg segments "
1571 "from dma_map_sg. Config %d,"
1572 "prot_seg_cnt %d\n", __func__
,
1573 phba
->cfg_prot_sg_seg_cnt
,
1574 lpfc_cmd
->prot_seg_cnt
);
1575 dma_unmap_sg(&phba
->pcidev
->dev
,
1576 scsi_prot_sglist(scsi_cmnd
),
1577 scsi_prot_sg_count(scsi_cmnd
),
1579 scsi_dma_unmap(scsi_cmnd
);
1583 num_bde
= lpfc_bg_setup_bpl_prot(phba
, scsi_cmnd
, bpl
,
1584 datasegcnt
, protsegcnt
);
1585 /* we shoud have 3 or more entries in buffer list */
1590 case LPFC_PG_TYPE_INVALID
:
1592 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1593 "9022 Unexpected protection group %i\n",
1600 * Finish initializing those IOCB fields that are dependent on the
1601 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
1602 * reinitialized since all iocb memory resources are used many times
1603 * for transmit, receive, and continuation bpl's.
1605 iocb_cmd
->un
.fcpi64
.bdl
.bdeSize
= (2 * sizeof(struct ulp_bde64
));
1606 iocb_cmd
->un
.fcpi64
.bdl
.bdeSize
+= (num_bde
* sizeof(struct ulp_bde64
));
1607 iocb_cmd
->ulpBdeCount
= 1;
1608 iocb_cmd
->ulpLe
= 1;
1610 fcpdl
= scsi_bufflen(scsi_cmnd
);
1612 if (scsi_get_prot_type(scsi_cmnd
) == SCSI_PROT_DIF_TYPE1
) {
1614 * We are in DIF Type 1 mode
1615 * Every data block has a 8 byte DIF (trailer)
1616 * attached to it. Must ajust FCP data length
1618 blksize
= lpfc_cmd_blksize(scsi_cmnd
);
1619 diflen
= (fcpdl
/ blksize
) * 8;
1622 fcp_cmnd
->fcpDl
= be32_to_cpu(fcpdl
);
1625 * Due to difference in data length between DIF/non-DIF paths,
1626 * we need to set word 4 of IOCB here
1628 iocb_cmd
->un
.fcpi
.fcpi_parm
= fcpdl
;
1632 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1633 "9023 Could not setup all needed BDE's"
1634 "prot_group_type=%d, num_bde=%d\n",
1635 prot_group_type
, num_bde
);
1640 * This function checks for BlockGuard errors detected by
1641 * the HBA. In case of errors, the ASC/ASCQ fields in the
1642 * sense buffer will be set accordingly, paired with
1643 * ILLEGAL_REQUEST to signal to the kernel that the HBA
1644 * detected corruption.
1647 * 0 - No error found
1648 * 1 - BlockGuard error found
1649 * -1 - Internal error (bad profile, ...etc)
1652 lpfc_parse_bg_err(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
,
1653 struct lpfc_iocbq
*pIocbOut
)
1655 struct scsi_cmnd
*cmd
= lpfc_cmd
->pCmd
;
1656 struct sli3_bg_fields
*bgf
= &pIocbOut
->iocb
.unsli3
.sli3_bg
;
1658 uint32_t bghm
= bgf
->bghm
;
1659 uint32_t bgstat
= bgf
->bgstat
;
1660 uint64_t failing_sector
= 0;
1662 printk(KERN_ERR
"BG ERROR in cmd 0x%x lba 0x%llx blk cnt 0x%x "
1663 "bgstat=0x%x bghm=0x%x\n",
1664 cmd
->cmnd
[0], (unsigned long long)scsi_get_lba(cmd
),
1665 blk_rq_sectors(cmd
->request
), bgstat
, bghm
);
1667 spin_lock(&_dump_buf_lock
);
1668 if (!_dump_buf_done
) {
1669 printk(KERN_ERR
"Saving Data for %u blocks to debugfs\n",
1670 (cmd
->cmnd
[7] << 8 | cmd
->cmnd
[8]));
1671 lpfc_debug_save_data(cmd
);
1673 /* If we have a prot sgl, save the DIF buffer */
1674 if (lpfc_prot_group_type(phba
, cmd
) ==
1675 LPFC_PG_TYPE_DIF_BUF
) {
1676 printk(KERN_ERR
"Saving DIF for %u blocks to debugfs\n",
1677 (cmd
->cmnd
[7] << 8 | cmd
->cmnd
[8]));
1678 lpfc_debug_save_dif(cmd
);
1683 spin_unlock(&_dump_buf_lock
);
1685 if (lpfc_bgs_get_invalid_prof(bgstat
)) {
1686 cmd
->result
= ScsiResult(DID_ERROR
, 0);
1687 printk(KERN_ERR
"Invalid BlockGuard profile. bgstat:0x%x\n",
1693 if (lpfc_bgs_get_uninit_dif_block(bgstat
)) {
1694 cmd
->result
= ScsiResult(DID_ERROR
, 0);
1695 printk(KERN_ERR
"Invalid BlockGuard DIF Block. bgstat:0x%x\n",
1701 if (lpfc_bgs_get_guard_err(bgstat
)) {
1704 scsi_build_sense_buffer(1, cmd
->sense_buffer
, ILLEGAL_REQUEST
,
1706 cmd
->result
= DRIVER_SENSE
<< 24
1707 | ScsiResult(DID_ABORT
, SAM_STAT_CHECK_CONDITION
);
1708 phba
->bg_guard_err_cnt
++;
1709 printk(KERN_ERR
"BLKGRD: guard_tag error\n");
1712 if (lpfc_bgs_get_reftag_err(bgstat
)) {
1715 scsi_build_sense_buffer(1, cmd
->sense_buffer
, ILLEGAL_REQUEST
,
1717 cmd
->result
= DRIVER_SENSE
<< 24
1718 | ScsiResult(DID_ABORT
, SAM_STAT_CHECK_CONDITION
);
1720 phba
->bg_reftag_err_cnt
++;
1721 printk(KERN_ERR
"BLKGRD: ref_tag error\n");
1724 if (lpfc_bgs_get_apptag_err(bgstat
)) {
1727 scsi_build_sense_buffer(1, cmd
->sense_buffer
, ILLEGAL_REQUEST
,
1729 cmd
->result
= DRIVER_SENSE
<< 24
1730 | ScsiResult(DID_ABORT
, SAM_STAT_CHECK_CONDITION
);
1732 phba
->bg_apptag_err_cnt
++;
1733 printk(KERN_ERR
"BLKGRD: app_tag error\n");
1736 if (lpfc_bgs_get_hi_water_mark_present(bgstat
)) {
1738 * setup sense data descriptor 0 per SPC-4 as an information
1739 * field, and put the failing LBA in it
1741 cmd
->sense_buffer
[8] = 0; /* Information */
1742 cmd
->sense_buffer
[9] = 0xa; /* Add. length */
1743 bghm
/= cmd
->device
->sector_size
;
1745 failing_sector
= scsi_get_lba(cmd
);
1746 failing_sector
+= bghm
;
1748 put_unaligned_be64(failing_sector
, &cmd
->sense_buffer
[10]);
1752 /* No error was reported - problem in FW? */
1753 cmd
->result
= ScsiResult(DID_ERROR
, 0);
1754 printk(KERN_ERR
"BLKGRD: no errors reported!\n");
1762 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
1763 * @phba: The Hba for which this call is being executed.
1764 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1766 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
1767 * field of @lpfc_cmd for device with SLI-4 interface spec.
1774 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
1776 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
1777 struct scatterlist
*sgel
= NULL
;
1778 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
1779 struct sli4_sge
*sgl
= (struct sli4_sge
*)lpfc_cmd
->fcp_bpl
;
1780 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
1781 dma_addr_t physaddr
;
1782 uint32_t num_bde
= 0;
1784 uint32_t dma_offset
= 0;
1788 * There are three possibilities here - use scatter-gather segment, use
1789 * the single mapping, or neither. Start the lpfc command prep by
1790 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1793 if (scsi_sg_count(scsi_cmnd
)) {
1795 * The driver stores the segment count returned from pci_map_sg
1796 * because this a count of dma-mappings used to map the use_sg
1797 * pages. They are not guaranteed to be the same for those
1798 * architectures that implement an IOMMU.
1801 nseg
= scsi_dma_map(scsi_cmnd
);
1802 if (unlikely(!nseg
))
1805 /* clear the last flag in the fcp_rsp map entry */
1806 sgl
->word2
= le32_to_cpu(sgl
->word2
);
1807 bf_set(lpfc_sli4_sge_last
, sgl
, 0);
1808 sgl
->word2
= cpu_to_le32(sgl
->word2
);
1811 lpfc_cmd
->seg_cnt
= nseg
;
1812 if (lpfc_cmd
->seg_cnt
> phba
->cfg_sg_seg_cnt
) {
1813 printk(KERN_ERR
"%s: Too many sg segments from "
1814 "dma_map_sg. Config %d, seg_cnt %d\n",
1815 __func__
, phba
->cfg_sg_seg_cnt
,
1817 scsi_dma_unmap(scsi_cmnd
);
1822 * The driver established a maximum scatter-gather segment count
1823 * during probe that limits the number of sg elements in any
1824 * single scsi command. Just run through the seg_cnt and format
1826 * When using SLI-3 the driver will try to fit all the BDEs into
1827 * the IOCB. If it can't then the BDEs get added to a BPL as it
1828 * does for SLI-2 mode.
1830 scsi_for_each_sg(scsi_cmnd
, sgel
, nseg
, num_bde
) {
1831 physaddr
= sg_dma_address(sgel
);
1832 dma_len
= sg_dma_len(sgel
);
1833 bf_set(lpfc_sli4_sge_len
, sgl
, sg_dma_len(sgel
));
1834 sgl
->addr_lo
= cpu_to_le32(putPaddrLow(physaddr
));
1835 sgl
->addr_hi
= cpu_to_le32(putPaddrHigh(physaddr
));
1836 if ((num_bde
+ 1) == nseg
)
1837 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
1839 bf_set(lpfc_sli4_sge_last
, sgl
, 0);
1840 bf_set(lpfc_sli4_sge_offset
, sgl
, dma_offset
);
1841 sgl
->word2
= cpu_to_le32(sgl
->word2
);
1842 sgl
->word3
= cpu_to_le32(sgl
->word3
);
1843 dma_offset
+= dma_len
;
1848 /* clear the last flag in the fcp_rsp map entry */
1849 sgl
->word2
= le32_to_cpu(sgl
->word2
);
1850 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
1851 sgl
->word2
= cpu_to_le32(sgl
->word2
);
1855 * Finish initializing those IOCB fields that are dependent on the
1856 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1857 * explicitly reinitialized.
1858 * all iocb memory resources are reused.
1860 fcp_cmnd
->fcpDl
= cpu_to_be32(scsi_bufflen(scsi_cmnd
));
1863 * Due to difference in data length between DIF/non-DIF paths,
1864 * we need to set word 4 of IOCB here
1866 iocb_cmd
->un
.fcpi
.fcpi_parm
= scsi_bufflen(scsi_cmnd
);
1871 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
1872 * @phba: The Hba for which this call is being executed.
1873 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1875 * This routine wraps the actual DMA mapping function pointer from the
1883 lpfc_scsi_prep_dma_buf(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
1885 return phba
->lpfc_scsi_prep_dma_buf(phba
, lpfc_cmd
);
1889 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
1890 * @phba: Pointer to hba context object.
1891 * @vport: Pointer to vport object.
1892 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
1893 * @rsp_iocb: Pointer to response iocb object which reported error.
1895 * This function posts an event when there is a SCSI command reporting
1896 * error from the scsi device.
1899 lpfc_send_scsi_error_event(struct lpfc_hba
*phba
, struct lpfc_vport
*vport
,
1900 struct lpfc_scsi_buf
*lpfc_cmd
, struct lpfc_iocbq
*rsp_iocb
) {
1901 struct scsi_cmnd
*cmnd
= lpfc_cmd
->pCmd
;
1902 struct fcp_rsp
*fcprsp
= lpfc_cmd
->fcp_rsp
;
1903 uint32_t resp_info
= fcprsp
->rspStatus2
;
1904 uint32_t scsi_status
= fcprsp
->rspStatus3
;
1905 uint32_t fcpi_parm
= rsp_iocb
->iocb
.un
.fcpi
.fcpi_parm
;
1906 struct lpfc_fast_path_event
*fast_path_evt
= NULL
;
1907 struct lpfc_nodelist
*pnode
= lpfc_cmd
->rdata
->pnode
;
1908 unsigned long flags
;
1910 /* If there is queuefull or busy condition send a scsi event */
1911 if ((cmnd
->result
== SAM_STAT_TASK_SET_FULL
) ||
1912 (cmnd
->result
== SAM_STAT_BUSY
)) {
1913 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
1916 fast_path_evt
->un
.scsi_evt
.event_type
=
1918 fast_path_evt
->un
.scsi_evt
.subcategory
=
1919 (cmnd
->result
== SAM_STAT_TASK_SET_FULL
) ?
1920 LPFC_EVENT_QFULL
: LPFC_EVENT_DEVBSY
;
1921 fast_path_evt
->un
.scsi_evt
.lun
= cmnd
->device
->lun
;
1922 memcpy(&fast_path_evt
->un
.scsi_evt
.wwpn
,
1923 &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
1924 memcpy(&fast_path_evt
->un
.scsi_evt
.wwnn
,
1925 &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
1926 } else if ((resp_info
& SNS_LEN_VALID
) && fcprsp
->rspSnsLen
&&
1927 ((cmnd
->cmnd
[0] == READ_10
) || (cmnd
->cmnd
[0] == WRITE_10
))) {
1928 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
1931 fast_path_evt
->un
.check_cond_evt
.scsi_event
.event_type
=
1933 fast_path_evt
->un
.check_cond_evt
.scsi_event
.subcategory
=
1934 LPFC_EVENT_CHECK_COND
;
1935 fast_path_evt
->un
.check_cond_evt
.scsi_event
.lun
=
1937 memcpy(&fast_path_evt
->un
.check_cond_evt
.scsi_event
.wwpn
,
1938 &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
1939 memcpy(&fast_path_evt
->un
.check_cond_evt
.scsi_event
.wwnn
,
1940 &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
1941 fast_path_evt
->un
.check_cond_evt
.sense_key
=
1942 cmnd
->sense_buffer
[2] & 0xf;
1943 fast_path_evt
->un
.check_cond_evt
.asc
= cmnd
->sense_buffer
[12];
1944 fast_path_evt
->un
.check_cond_evt
.ascq
= cmnd
->sense_buffer
[13];
1945 } else if ((cmnd
->sc_data_direction
== DMA_FROM_DEVICE
) &&
1947 ((be32_to_cpu(fcprsp
->rspResId
) != fcpi_parm
) ||
1948 ((scsi_status
== SAM_STAT_GOOD
) &&
1949 !(resp_info
& (RESID_UNDER
| RESID_OVER
))))) {
1951 * If status is good or resid does not match with fcp_param and
1952 * there is valid fcpi_parm, then there is a read_check error
1954 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
1957 fast_path_evt
->un
.read_check_error
.header
.event_type
=
1958 FC_REG_FABRIC_EVENT
;
1959 fast_path_evt
->un
.read_check_error
.header
.subcategory
=
1960 LPFC_EVENT_FCPRDCHKERR
;
1961 memcpy(&fast_path_evt
->un
.read_check_error
.header
.wwpn
,
1962 &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
1963 memcpy(&fast_path_evt
->un
.read_check_error
.header
.wwnn
,
1964 &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
1965 fast_path_evt
->un
.read_check_error
.lun
= cmnd
->device
->lun
;
1966 fast_path_evt
->un
.read_check_error
.opcode
= cmnd
->cmnd
[0];
1967 fast_path_evt
->un
.read_check_error
.fcpiparam
=
1972 fast_path_evt
->vport
= vport
;
1973 spin_lock_irqsave(&phba
->hbalock
, flags
);
1974 list_add_tail(&fast_path_evt
->work_evt
.evt_listp
, &phba
->work_list
);
1975 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
1976 lpfc_worker_wake_up(phba
);
1981 * lpfc_scsi_unprep_dma_buf_s3 - Un-map DMA mapping of SG-list for SLI3 dev
1982 * @phba: The HBA for which this call is being executed.
1983 * @psb: The scsi buffer which is going to be un-mapped.
1985 * This routine does DMA un-mapping of scatter gather list of scsi command
1986 * field of @lpfc_cmd for device with SLI-3 interface spec.
1989 lpfc_scsi_unprep_dma_buf_s3(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
1992 * There are only two special cases to consider. (1) the scsi command
1993 * requested scatter-gather usage or (2) the scsi command allocated
1994 * a request buffer, but did not request use_sg. There is a third
1995 * case, but it does not require resource deallocation.
1997 if (psb
->seg_cnt
> 0)
1998 scsi_dma_unmap(psb
->pCmd
);
1999 if (psb
->prot_seg_cnt
> 0)
2000 dma_unmap_sg(&phba
->pcidev
->dev
, scsi_prot_sglist(psb
->pCmd
),
2001 scsi_prot_sg_count(psb
->pCmd
),
2002 psb
->pCmd
->sc_data_direction
);
2006 * lpfc_scsi_unprep_dma_buf_s4 - Un-map DMA mapping of SG-list for SLI4 dev
2007 * @phba: The Hba for which this call is being executed.
2008 * @psb: The scsi buffer which is going to be un-mapped.
2010 * This routine does DMA un-mapping of scatter gather list of scsi command
2011 * field of @lpfc_cmd for device with SLI-4 interface spec. If we have to
2012 * remove the sgl for this scsi buffer then we will do it here. For now
2013 * we should be able to just call the sli3 unprep routine.
2016 lpfc_scsi_unprep_dma_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
2018 lpfc_scsi_unprep_dma_buf_s3(phba
, psb
);
2022 * lpfc_scsi_unprep_dma_buf - Wrapper function for unmap DMA mapping of SG-list
2023 * @phba: The Hba for which this call is being executed.
2024 * @psb: The scsi buffer which is going to be un-mapped.
2026 * This routine does DMA un-mapping of scatter gather list of scsi command
2027 * field of @lpfc_cmd for device with SLI-4 interface spec.
2030 lpfc_scsi_unprep_dma_buf(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
2032 phba
->lpfc_scsi_unprep_dma_buf(phba
, psb
);
2036 * lpfc_handler_fcp_err - FCP response handler
2037 * @vport: The virtual port for which this call is being executed.
2038 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
2039 * @rsp_iocb: The response IOCB which contains FCP error.
2041 * This routine is called to process response IOCB with status field
2042 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
2043 * based upon SCSI and FCP error.
2046 lpfc_handle_fcp_err(struct lpfc_vport
*vport
, struct lpfc_scsi_buf
*lpfc_cmd
,
2047 struct lpfc_iocbq
*rsp_iocb
)
2049 struct scsi_cmnd
*cmnd
= lpfc_cmd
->pCmd
;
2050 struct fcp_cmnd
*fcpcmd
= lpfc_cmd
->fcp_cmnd
;
2051 struct fcp_rsp
*fcprsp
= lpfc_cmd
->fcp_rsp
;
2052 uint32_t fcpi_parm
= rsp_iocb
->iocb
.un
.fcpi
.fcpi_parm
;
2053 uint32_t resp_info
= fcprsp
->rspStatus2
;
2054 uint32_t scsi_status
= fcprsp
->rspStatus3
;
2056 uint32_t host_status
= DID_OK
;
2057 uint32_t rsplen
= 0;
2058 uint32_t logit
= LOG_FCP
| LOG_FCP_ERROR
;
2062 * If this is a task management command, there is no
2063 * scsi packet associated with this lpfc_cmd. The driver
2066 if (fcpcmd
->fcpCntl2
) {
2071 if ((resp_info
& SNS_LEN_VALID
) && fcprsp
->rspSnsLen
) {
2072 uint32_t snslen
= be32_to_cpu(fcprsp
->rspSnsLen
);
2073 if (snslen
> SCSI_SENSE_BUFFERSIZE
)
2074 snslen
= SCSI_SENSE_BUFFERSIZE
;
2076 if (resp_info
& RSP_LEN_VALID
)
2077 rsplen
= be32_to_cpu(fcprsp
->rspRspLen
);
2078 memcpy(cmnd
->sense_buffer
, &fcprsp
->rspInfo0
+ rsplen
, snslen
);
2080 lp
= (uint32_t *)cmnd
->sense_buffer
;
2082 if (!scsi_status
&& (resp_info
& RESID_UNDER
))
2085 lpfc_printf_vlog(vport
, KERN_WARNING
, logit
,
2086 "9024 FCP command x%x failed: x%x SNS x%x x%x "
2087 "Data: x%x x%x x%x x%x x%x\n",
2088 cmnd
->cmnd
[0], scsi_status
,
2089 be32_to_cpu(*lp
), be32_to_cpu(*(lp
+ 3)), resp_info
,
2090 be32_to_cpu(fcprsp
->rspResId
),
2091 be32_to_cpu(fcprsp
->rspSnsLen
),
2092 be32_to_cpu(fcprsp
->rspRspLen
),
2095 if (resp_info
& RSP_LEN_VALID
) {
2096 rsplen
= be32_to_cpu(fcprsp
->rspRspLen
);
2097 if ((rsplen
!= 0 && rsplen
!= 4 && rsplen
!= 8) ||
2098 (fcprsp
->rspInfo3
!= RSP_NO_FAILURE
)) {
2099 host_status
= DID_ERROR
;
2104 scsi_set_resid(cmnd
, 0);
2105 if (resp_info
& RESID_UNDER
) {
2106 scsi_set_resid(cmnd
, be32_to_cpu(fcprsp
->rspResId
));
2108 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2109 "9025 FCP Read Underrun, expected %d, "
2110 "residual %d Data: x%x x%x x%x\n",
2111 be32_to_cpu(fcpcmd
->fcpDl
),
2112 scsi_get_resid(cmnd
), fcpi_parm
, cmnd
->cmnd
[0],
2116 * If there is an under run check if under run reported by
2117 * storage array is same as the under run reported by HBA.
2118 * If this is not same, there is a dropped frame.
2120 if ((cmnd
->sc_data_direction
== DMA_FROM_DEVICE
) &&
2122 (scsi_get_resid(cmnd
) != fcpi_parm
)) {
2123 lpfc_printf_vlog(vport
, KERN_WARNING
,
2124 LOG_FCP
| LOG_FCP_ERROR
,
2125 "9026 FCP Read Check Error "
2126 "and Underrun Data: x%x x%x x%x x%x\n",
2127 be32_to_cpu(fcpcmd
->fcpDl
),
2128 scsi_get_resid(cmnd
), fcpi_parm
,
2130 scsi_set_resid(cmnd
, scsi_bufflen(cmnd
));
2131 host_status
= DID_ERROR
;
2134 * The cmnd->underflow is the minimum number of bytes that must
2135 * be transfered for this command. Provided a sense condition
2136 * is not present, make sure the actual amount transferred is at
2137 * least the underflow value or fail.
2139 if (!(resp_info
& SNS_LEN_VALID
) &&
2140 (scsi_status
== SAM_STAT_GOOD
) &&
2141 (scsi_bufflen(cmnd
) - scsi_get_resid(cmnd
)
2142 < cmnd
->underflow
)) {
2143 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2144 "9027 FCP command x%x residual "
2145 "underrun converted to error "
2146 "Data: x%x x%x x%x\n",
2147 cmnd
->cmnd
[0], scsi_bufflen(cmnd
),
2148 scsi_get_resid(cmnd
), cmnd
->underflow
);
2149 host_status
= DID_ERROR
;
2151 } else if (resp_info
& RESID_OVER
) {
2152 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
2153 "9028 FCP command x%x residual overrun error. "
2154 "Data: x%x x%x \n", cmnd
->cmnd
[0],
2155 scsi_bufflen(cmnd
), scsi_get_resid(cmnd
));
2156 host_status
= DID_ERROR
;
2159 * Check SLI validation that all the transfer was actually done
2160 * (fcpi_parm should be zero). Apply check only to reads.
2162 } else if ((scsi_status
== SAM_STAT_GOOD
) && fcpi_parm
&&
2163 (cmnd
->sc_data_direction
== DMA_FROM_DEVICE
)) {
2164 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
| LOG_FCP_ERROR
,
2165 "9029 FCP Read Check Error Data: "
2166 "x%x x%x x%x x%x\n",
2167 be32_to_cpu(fcpcmd
->fcpDl
),
2168 be32_to_cpu(fcprsp
->rspResId
),
2169 fcpi_parm
, cmnd
->cmnd
[0]);
2170 host_status
= DID_ERROR
;
2171 scsi_set_resid(cmnd
, scsi_bufflen(cmnd
));
2175 cmnd
->result
= ScsiResult(host_status
, scsi_status
);
2176 lpfc_send_scsi_error_event(vport
->phba
, vport
, lpfc_cmd
, rsp_iocb
);
2180 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
2181 * @phba: The Hba for which this call is being executed.
2182 * @pIocbIn: The command IOCBQ for the scsi cmnd.
2183 * @pIocbOut: The response IOCBQ for the scsi cmnd.
2185 * This routine assigns scsi command result by looking into response IOCB
2186 * status field appropriately. This routine handles QUEUE FULL condition as
2187 * well by ramping down device queue depth.
2190 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba
*phba
, struct lpfc_iocbq
*pIocbIn
,
2191 struct lpfc_iocbq
*pIocbOut
)
2193 struct lpfc_scsi_buf
*lpfc_cmd
=
2194 (struct lpfc_scsi_buf
*) pIocbIn
->context1
;
2195 struct lpfc_vport
*vport
= pIocbIn
->vport
;
2196 struct lpfc_rport_data
*rdata
= lpfc_cmd
->rdata
;
2197 struct lpfc_nodelist
*pnode
= rdata
->pnode
;
2198 struct scsi_cmnd
*cmd
= lpfc_cmd
->pCmd
;
2200 struct scsi_device
*tmp_sdev
;
2202 unsigned long flags
;
2203 struct lpfc_fast_path_event
*fast_path_evt
;
2204 struct Scsi_Host
*shost
= cmd
->device
->host
;
2205 uint32_t queue_depth
, scsi_id
;
2207 lpfc_cmd
->result
= pIocbOut
->iocb
.un
.ulpWord
[4];
2208 lpfc_cmd
->status
= pIocbOut
->iocb
.ulpStatus
;
2209 if (pnode
&& NLP_CHK_NODE_ACT(pnode
))
2210 atomic_dec(&pnode
->cmd_pending
);
2212 if (lpfc_cmd
->status
) {
2213 if (lpfc_cmd
->status
== IOSTAT_LOCAL_REJECT
&&
2214 (lpfc_cmd
->result
& IOERR_DRVR_MASK
))
2215 lpfc_cmd
->status
= IOSTAT_DRIVER_REJECT
;
2216 else if (lpfc_cmd
->status
>= IOSTAT_CNT
)
2217 lpfc_cmd
->status
= IOSTAT_DEFAULT
;
2219 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
2220 "9030 FCP cmd x%x failed <%d/%d> "
2221 "status: x%x result: x%x Data: x%x x%x\n",
2223 cmd
->device
? cmd
->device
->id
: 0xffff,
2224 cmd
->device
? cmd
->device
->lun
: 0xffff,
2225 lpfc_cmd
->status
, lpfc_cmd
->result
,
2226 pIocbOut
->iocb
.ulpContext
,
2227 lpfc_cmd
->cur_iocbq
.iocb
.ulpIoTag
);
2229 switch (lpfc_cmd
->status
) {
2230 case IOSTAT_FCP_RSP_ERROR
:
2231 /* Call FCP RSP handler to determine result */
2232 lpfc_handle_fcp_err(vport
, lpfc_cmd
, pIocbOut
);
2234 case IOSTAT_NPORT_BSY
:
2235 case IOSTAT_FABRIC_BSY
:
2236 cmd
->result
= ScsiResult(DID_TRANSPORT_DISRUPTED
, 0);
2237 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
2240 fast_path_evt
->un
.fabric_evt
.event_type
=
2241 FC_REG_FABRIC_EVENT
;
2242 fast_path_evt
->un
.fabric_evt
.subcategory
=
2243 (lpfc_cmd
->status
== IOSTAT_NPORT_BSY
) ?
2244 LPFC_EVENT_PORT_BUSY
: LPFC_EVENT_FABRIC_BUSY
;
2245 if (pnode
&& NLP_CHK_NODE_ACT(pnode
)) {
2246 memcpy(&fast_path_evt
->un
.fabric_evt
.wwpn
,
2247 &pnode
->nlp_portname
,
2248 sizeof(struct lpfc_name
));
2249 memcpy(&fast_path_evt
->un
.fabric_evt
.wwnn
,
2250 &pnode
->nlp_nodename
,
2251 sizeof(struct lpfc_name
));
2253 fast_path_evt
->vport
= vport
;
2254 fast_path_evt
->work_evt
.evt
=
2255 LPFC_EVT_FASTPATH_MGMT_EVT
;
2256 spin_lock_irqsave(&phba
->hbalock
, flags
);
2257 list_add_tail(&fast_path_evt
->work_evt
.evt_listp
,
2259 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
2260 lpfc_worker_wake_up(phba
);
2262 case IOSTAT_LOCAL_REJECT
:
2263 if (lpfc_cmd
->result
== IOERR_INVALID_RPI
||
2264 lpfc_cmd
->result
== IOERR_NO_RESOURCES
||
2265 lpfc_cmd
->result
== IOERR_ABORT_REQUESTED
) {
2266 cmd
->result
= ScsiResult(DID_REQUEUE
, 0);
2270 if ((lpfc_cmd
->result
== IOERR_RX_DMA_FAILED
||
2271 lpfc_cmd
->result
== IOERR_TX_DMA_FAILED
) &&
2272 pIocbOut
->iocb
.unsli3
.sli3_bg
.bgstat
) {
2273 if (scsi_get_prot_op(cmd
) != SCSI_PROT_NORMAL
) {
2275 * This is a response for a BG enabled
2276 * cmd. Parse BG error
2278 lpfc_parse_bg_err(phba
, lpfc_cmd
,
2282 lpfc_printf_vlog(vport
, KERN_WARNING
,
2284 "9031 non-zero BGSTAT "
2285 "on unprotected cmd");
2289 /* else: fall through */
2291 cmd
->result
= ScsiResult(DID_ERROR
, 0);
2295 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
)
2296 || (pnode
->nlp_state
!= NLP_STE_MAPPED_NODE
))
2297 cmd
->result
= ScsiResult(DID_TRANSPORT_DISRUPTED
,
2300 cmd
->result
= ScsiResult(DID_OK
, 0);
2303 if (cmd
->result
|| lpfc_cmd
->fcp_rsp
->rspSnsLen
) {
2304 uint32_t *lp
= (uint32_t *)cmd
->sense_buffer
;
2306 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2307 "0710 Iodone <%d/%d> cmd %p, error "
2308 "x%x SNS x%x x%x Data: x%x x%x\n",
2309 cmd
->device
->id
, cmd
->device
->lun
, cmd
,
2310 cmd
->result
, *lp
, *(lp
+ 3), cmd
->retries
,
2311 scsi_get_resid(cmd
));
2314 lpfc_update_stats(phba
, lpfc_cmd
);
2315 result
= cmd
->result
;
2316 if (vport
->cfg_max_scsicmpl_time
&&
2317 time_after(jiffies
, lpfc_cmd
->start_time
+
2318 msecs_to_jiffies(vport
->cfg_max_scsicmpl_time
))) {
2319 spin_lock_irqsave(shost
->host_lock
, flags
);
2320 if (pnode
&& NLP_CHK_NODE_ACT(pnode
)) {
2321 if (pnode
->cmd_qdepth
>
2322 atomic_read(&pnode
->cmd_pending
) &&
2323 (atomic_read(&pnode
->cmd_pending
) >
2324 LPFC_MIN_TGT_QDEPTH
) &&
2325 ((cmd
->cmnd
[0] == READ_10
) ||
2326 (cmd
->cmnd
[0] == WRITE_10
)))
2328 atomic_read(&pnode
->cmd_pending
);
2330 pnode
->last_change_time
= jiffies
;
2332 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2333 } else if (pnode
&& NLP_CHK_NODE_ACT(pnode
)) {
2334 if ((pnode
->cmd_qdepth
< LPFC_MAX_TGT_QDEPTH
) &&
2335 time_after(jiffies
, pnode
->last_change_time
+
2336 msecs_to_jiffies(LPFC_TGTQ_INTERVAL
))) {
2337 spin_lock_irqsave(shost
->host_lock
, flags
);
2338 pnode
->cmd_qdepth
+= pnode
->cmd_qdepth
*
2339 LPFC_TGTQ_RAMPUP_PCENT
/ 100;
2340 if (pnode
->cmd_qdepth
> LPFC_MAX_TGT_QDEPTH
)
2341 pnode
->cmd_qdepth
= LPFC_MAX_TGT_QDEPTH
;
2342 pnode
->last_change_time
= jiffies
;
2343 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2347 lpfc_scsi_unprep_dma_buf(phba
, lpfc_cmd
);
2349 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
2350 queue_depth
= cmd
->device
->queue_depth
;
2351 scsi_id
= cmd
->device
->id
;
2352 cmd
->scsi_done(cmd
);
2354 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
2356 * If there is a thread waiting for command completion
2357 * wake up the thread.
2359 spin_lock_irqsave(shost
->host_lock
, flags
);
2360 lpfc_cmd
->pCmd
= NULL
;
2361 if (lpfc_cmd
->waitq
)
2362 wake_up(lpfc_cmd
->waitq
);
2363 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2364 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2370 lpfc_rampup_queue_depth(vport
, queue_depth
);
2372 if (!result
&& pnode
&& NLP_CHK_NODE_ACT(pnode
) &&
2373 ((jiffies
- pnode
->last_ramp_up_time
) >
2374 LPFC_Q_RAMP_UP_INTERVAL
* HZ
) &&
2375 ((jiffies
- pnode
->last_q_full_time
) >
2376 LPFC_Q_RAMP_UP_INTERVAL
* HZ
) &&
2377 (vport
->cfg_lun_queue_depth
> queue_depth
)) {
2378 shost_for_each_device(tmp_sdev
, shost
) {
2379 if (vport
->cfg_lun_queue_depth
> tmp_sdev
->queue_depth
){
2380 if (tmp_sdev
->id
!= scsi_id
)
2382 if (tmp_sdev
->ordered_tags
)
2383 scsi_adjust_queue_depth(tmp_sdev
,
2385 tmp_sdev
->queue_depth
+1);
2387 scsi_adjust_queue_depth(tmp_sdev
,
2389 tmp_sdev
->queue_depth
+1);
2391 pnode
->last_ramp_up_time
= jiffies
;
2394 lpfc_send_sdev_queuedepth_change_event(phba
, vport
, pnode
,
2396 queue_depth
, queue_depth
+ 1);
2400 * Check for queue full. If the lun is reporting queue full, then
2401 * back off the lun queue depth to prevent target overloads.
2403 if (result
== SAM_STAT_TASK_SET_FULL
&& pnode
&&
2404 NLP_CHK_NODE_ACT(pnode
)) {
2405 pnode
->last_q_full_time
= jiffies
;
2407 shost_for_each_device(tmp_sdev
, shost
) {
2408 if (tmp_sdev
->id
!= scsi_id
)
2410 depth
= scsi_track_queue_full(tmp_sdev
,
2411 tmp_sdev
->queue_depth
- 1);
2414 * The queue depth cannot be lowered any more.
2415 * Modify the returned error code to store
2416 * the final depth value set by
2417 * scsi_track_queue_full.
2420 depth
= shost
->cmd_per_lun
;
2423 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
2424 "0711 detected queue full - lun queue "
2425 "depth adjusted to %d.\n", depth
);
2426 lpfc_send_sdev_queuedepth_change_event(phba
, vport
,
2433 * If there is a thread waiting for command completion
2434 * wake up the thread.
2436 spin_lock_irqsave(shost
->host_lock
, flags
);
2437 lpfc_cmd
->pCmd
= NULL
;
2438 if (lpfc_cmd
->waitq
)
2439 wake_up(lpfc_cmd
->waitq
);
2440 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2442 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2446 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
2447 * @data: A pointer to the immediate command data portion of the IOCB.
2448 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
2450 * The routine copies the entire FCP command from @fcp_cmnd to @data while
2451 * byte swapping the data to big endian format for transmission on the wire.
2454 lpfc_fcpcmd_to_iocb(uint8_t *data
, struct fcp_cmnd
*fcp_cmnd
)
2457 for (i
= 0, j
= 0; i
< sizeof(struct fcp_cmnd
);
2458 i
+= sizeof(uint32_t), j
++) {
2459 ((uint32_t *)data
)[j
] = cpu_to_be32(((uint32_t *)fcp_cmnd
)[j
]);
2464 * lpfc_scsi_prep_cmnd_s3 - Convert scsi cmnd to FCP infor unit for SLI3 dev
2465 * @vport: The virtual port for which this call is being executed.
2466 * @lpfc_cmd: The scsi command which needs to send.
2467 * @pnode: Pointer to lpfc_nodelist.
2469 * This routine initializes fcp_cmnd and iocb data structure from scsi command
2470 * to transfer for device with SLI3 interface spec.
2473 lpfc_scsi_prep_cmnd_s3(struct lpfc_vport
*vport
, struct lpfc_scsi_buf
*lpfc_cmd
,
2474 struct lpfc_nodelist
*pnode
)
2476 struct lpfc_hba
*phba
= vport
->phba
;
2477 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
2478 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
2479 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
2480 struct lpfc_iocbq
*piocbq
= &(lpfc_cmd
->cur_iocbq
);
2481 int datadir
= scsi_cmnd
->sc_data_direction
;
2484 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
))
2487 lpfc_cmd
->fcp_rsp
->rspSnsLen
= 0;
2488 /* clear task management bits */
2489 lpfc_cmd
->fcp_cmnd
->fcpCntl2
= 0;
2491 int_to_scsilun(lpfc_cmd
->pCmd
->device
->lun
,
2492 &lpfc_cmd
->fcp_cmnd
->fcp_lun
);
2494 memcpy(&fcp_cmnd
->fcpCdb
[0], scsi_cmnd
->cmnd
, 16);
2496 if (scsi_populate_tag_msg(scsi_cmnd
, tag
)) {
2498 case HEAD_OF_QUEUE_TAG
:
2499 fcp_cmnd
->fcpCntl1
= HEAD_OF_Q
;
2501 case ORDERED_QUEUE_TAG
:
2502 fcp_cmnd
->fcpCntl1
= ORDERED_Q
;
2505 fcp_cmnd
->fcpCntl1
= SIMPLE_Q
;
2509 fcp_cmnd
->fcpCntl1
= 0;
2512 * There are three possibilities here - use scatter-gather segment, use
2513 * the single mapping, or neither. Start the lpfc command prep by
2514 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
2517 if (scsi_sg_count(scsi_cmnd
)) {
2518 if (datadir
== DMA_TO_DEVICE
) {
2519 iocb_cmd
->ulpCommand
= CMD_FCP_IWRITE64_CR
;
2520 if (phba
->sli_rev
< LPFC_SLI_REV4
) {
2521 iocb_cmd
->un
.fcpi
.fcpi_parm
= 0;
2522 iocb_cmd
->ulpPU
= 0;
2524 iocb_cmd
->ulpPU
= PARM_READ_CHECK
;
2525 fcp_cmnd
->fcpCntl3
= WRITE_DATA
;
2526 phba
->fc4OutputRequests
++;
2528 iocb_cmd
->ulpCommand
= CMD_FCP_IREAD64_CR
;
2529 iocb_cmd
->ulpPU
= PARM_READ_CHECK
;
2530 fcp_cmnd
->fcpCntl3
= READ_DATA
;
2531 phba
->fc4InputRequests
++;
2534 iocb_cmd
->ulpCommand
= CMD_FCP_ICMND64_CR
;
2535 iocb_cmd
->un
.fcpi
.fcpi_parm
= 0;
2536 iocb_cmd
->ulpPU
= 0;
2537 fcp_cmnd
->fcpCntl3
= 0;
2538 phba
->fc4ControlRequests
++;
2540 if (phba
->sli_rev
== 3 &&
2541 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
))
2542 lpfc_fcpcmd_to_iocb(iocb_cmd
->unsli3
.fcp_ext
.icd
, fcp_cmnd
);
2544 * Finish initializing those IOCB fields that are independent
2545 * of the scsi_cmnd request_buffer
2547 piocbq
->iocb
.ulpContext
= pnode
->nlp_rpi
;
2548 if (pnode
->nlp_fcp_info
& NLP_FCP_2_DEVICE
)
2549 piocbq
->iocb
.ulpFCP2Rcvy
= 1;
2551 piocbq
->iocb
.ulpFCP2Rcvy
= 0;
2553 piocbq
->iocb
.ulpClass
= (pnode
->nlp_fcp_info
& 0x0f);
2554 piocbq
->context1
= lpfc_cmd
;
2555 piocbq
->iocb_cmpl
= lpfc_scsi_cmd_iocb_cmpl
;
2556 piocbq
->iocb
.ulpTimeout
= lpfc_cmd
->timeout
;
2557 piocbq
->vport
= vport
;
2561 * lpfc_scsi_prep_cmnd_s4 - Convert scsi cmnd to FCP infor unit for SLI4 dev
2562 * @vport: The virtual port for which this call is being executed.
2563 * @lpfc_cmd: The scsi command which needs to send.
2564 * @pnode: Pointer to lpfc_nodelist.
2566 * This routine initializes fcp_cmnd and iocb data structure from scsi command
2567 * to transfer for device with SLI4 interface spec.
2570 lpfc_scsi_prep_cmnd_s4(struct lpfc_vport
*vport
, struct lpfc_scsi_buf
*lpfc_cmd
,
2571 struct lpfc_nodelist
*pnode
)
2574 * The prep cmnd routines do not touch the sgl or its
2575 * entries. We may not have to do anything different.
2576 * I will leave this function in place until we can
2577 * run some IO through the driver and determine if changes
2580 return lpfc_scsi_prep_cmnd_s3(vport
, lpfc_cmd
, pnode
);
2584 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
2585 * @vport: The virtual port for which this call is being executed.
2586 * @lpfc_cmd: The scsi command which needs to send.
2587 * @pnode: Pointer to lpfc_nodelist.
2589 * This routine wraps the actual convert SCSI cmnd function pointer from
2590 * the lpfc_hba struct.
2593 lpfc_scsi_prep_cmnd(struct lpfc_vport
*vport
, struct lpfc_scsi_buf
*lpfc_cmd
,
2594 struct lpfc_nodelist
*pnode
)
2596 vport
->phba
->lpfc_scsi_prep_cmnd(vport
, lpfc_cmd
, pnode
);
2600 * lpfc_scsi_prep_task_mgmt_cmnd_s3 - Convert SLI3 scsi TM cmd to FCP info unit
2601 * @vport: The virtual port for which this call is being executed.
2602 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
2603 * @lun: Logical unit number.
2604 * @task_mgmt_cmd: SCSI task management command.
2606 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
2607 * for device with SLI-3 interface spec.
2614 lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport
*vport
,
2615 struct lpfc_scsi_buf
*lpfc_cmd
,
2617 uint8_t task_mgmt_cmd
)
2619 struct lpfc_iocbq
*piocbq
;
2621 struct fcp_cmnd
*fcp_cmnd
;
2622 struct lpfc_rport_data
*rdata
= lpfc_cmd
->rdata
;
2623 struct lpfc_nodelist
*ndlp
= rdata
->pnode
;
2625 if (!ndlp
|| !NLP_CHK_NODE_ACT(ndlp
) ||
2626 ndlp
->nlp_state
!= NLP_STE_MAPPED_NODE
)
2629 piocbq
= &(lpfc_cmd
->cur_iocbq
);
2630 piocbq
->vport
= vport
;
2632 piocb
= &piocbq
->iocb
;
2634 fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
2635 /* Clear out any old data in the FCP command area */
2636 memset(fcp_cmnd
, 0, sizeof(struct fcp_cmnd
));
2637 int_to_scsilun(lun
, &fcp_cmnd
->fcp_lun
);
2638 fcp_cmnd
->fcpCntl2
= task_mgmt_cmd
;
2639 if (vport
->phba
->sli_rev
== 3 &&
2640 !(vport
->phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
))
2641 lpfc_fcpcmd_to_iocb(piocb
->unsli3
.fcp_ext
.icd
, fcp_cmnd
);
2642 piocb
->ulpCommand
= CMD_FCP_ICMND64_CR
;
2643 piocb
->ulpContext
= ndlp
->nlp_rpi
;
2644 if (ndlp
->nlp_fcp_info
& NLP_FCP_2_DEVICE
) {
2645 piocb
->ulpFCP2Rcvy
= 1;
2647 piocb
->ulpClass
= (ndlp
->nlp_fcp_info
& 0x0f);
2649 /* ulpTimeout is only one byte */
2650 if (lpfc_cmd
->timeout
> 0xff) {
2652 * Do not timeout the command at the firmware level.
2653 * The driver will provide the timeout mechanism.
2655 piocb
->ulpTimeout
= 0;
2657 piocb
->ulpTimeout
= lpfc_cmd
->timeout
;
2664 * lpfc_scsi_prep_task_mgmt_cmnd_s4 - Convert SLI4 scsi TM cmd to FCP info unit
2665 * @vport: The virtual port for which this call is being executed.
2666 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
2667 * @lun: Logical unit number.
2668 * @task_mgmt_cmd: SCSI task management command.
2670 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
2671 * for device with SLI-4 interface spec.
2678 lpfc_scsi_prep_task_mgmt_cmd_s4(struct lpfc_vport
*vport
,
2679 struct lpfc_scsi_buf
*lpfc_cmd
,
2681 uint8_t task_mgmt_cmd
)
2684 * The prep cmnd routines do not touch the sgl or its
2685 * entries. We may not have to do anything different.
2686 * I will leave this function in place until we can
2687 * run some IO through the driver and determine if changes
2690 return lpfc_scsi_prep_task_mgmt_cmd_s3(vport
, lpfc_cmd
, lun
,
2695 * lpfc_scsi_prep_task_mgmt_cmnd - Wrapper func convert scsi TM cmd to FCP info
2696 * @vport: The virtual port for which this call is being executed.
2697 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
2698 * @lun: Logical unit number.
2699 * @task_mgmt_cmd: SCSI task management command.
2701 * This routine wraps the actual convert SCSI TM to FCP information unit
2702 * function pointer from the lpfc_hba struct.
2709 lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport
*vport
,
2710 struct lpfc_scsi_buf
*lpfc_cmd
,
2712 uint8_t task_mgmt_cmd
)
2714 struct lpfc_hba
*phba
= vport
->phba
;
2716 return phba
->lpfc_scsi_prep_task_mgmt_cmd(vport
, lpfc_cmd
, lun
,
2721 * lpfc_scsi_api_table_setup - Set up scsi api fucntion jump table
2722 * @phba: The hba struct for which this call is being executed.
2723 * @dev_grp: The HBA PCI-Device group number.
2725 * This routine sets up the SCSI interface API function jump table in @phba
2727 * Returns: 0 - success, -ENODEV - failure.
2730 lpfc_scsi_api_table_setup(struct lpfc_hba
*phba
, uint8_t dev_grp
)
2734 case LPFC_PCI_DEV_LP
:
2735 phba
->lpfc_new_scsi_buf
= lpfc_new_scsi_buf_s3
;
2736 phba
->lpfc_scsi_prep_dma_buf
= lpfc_scsi_prep_dma_buf_s3
;
2737 phba
->lpfc_scsi_prep_cmnd
= lpfc_scsi_prep_cmnd_s3
;
2738 phba
->lpfc_scsi_unprep_dma_buf
= lpfc_scsi_unprep_dma_buf_s3
;
2739 phba
->lpfc_scsi_prep_task_mgmt_cmd
=
2740 lpfc_scsi_prep_task_mgmt_cmd_s3
;
2741 phba
->lpfc_release_scsi_buf
= lpfc_release_scsi_buf_s3
;
2743 case LPFC_PCI_DEV_OC
:
2744 phba
->lpfc_new_scsi_buf
= lpfc_new_scsi_buf_s4
;
2745 phba
->lpfc_scsi_prep_dma_buf
= lpfc_scsi_prep_dma_buf_s4
;
2746 phba
->lpfc_scsi_prep_cmnd
= lpfc_scsi_prep_cmnd_s4
;
2747 phba
->lpfc_scsi_unprep_dma_buf
= lpfc_scsi_unprep_dma_buf_s4
;
2748 phba
->lpfc_scsi_prep_task_mgmt_cmd
=
2749 lpfc_scsi_prep_task_mgmt_cmd_s4
;
2750 phba
->lpfc_release_scsi_buf
= lpfc_release_scsi_buf_s4
;
2753 lpfc_printf_log(phba
, KERN_ERR
, LOG_INIT
,
2754 "1418 Invalid HBA PCI-device group: 0x%x\n",
2759 phba
->lpfc_get_scsi_buf
= lpfc_get_scsi_buf
;
2760 phba
->lpfc_rampdown_queue_depth
= lpfc_rampdown_queue_depth
;
2765 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
2766 * @phba: The Hba for which this call is being executed.
2767 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
2768 * @rspiocbq: Pointer to lpfc_iocbq data structure.
2770 * This routine is IOCB completion routine for device reset and target reset
2771 * routine. This routine release scsi buffer associated with lpfc_cmd.
2774 lpfc_tskmgmt_def_cmpl(struct lpfc_hba
*phba
,
2775 struct lpfc_iocbq
*cmdiocbq
,
2776 struct lpfc_iocbq
*rspiocbq
)
2778 struct lpfc_scsi_buf
*lpfc_cmd
=
2779 (struct lpfc_scsi_buf
*) cmdiocbq
->context1
;
2781 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2786 * lpfc_scsi_tgt_reset - Target reset handler
2787 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure
2788 * @vport: The virtual port for which this call is being executed.
2789 * @tgt_id: Target ID.
2791 * @rdata: Pointer to lpfc_rport_data.
2793 * This routine issues a TARGET RESET iocb to reset a target with @tgt_id ID.
2800 lpfc_scsi_tgt_reset(struct lpfc_scsi_buf
*lpfc_cmd
, struct lpfc_vport
*vport
,
2801 unsigned tgt_id
, unsigned int lun
,
2802 struct lpfc_rport_data
*rdata
)
2804 struct lpfc_hba
*phba
= vport
->phba
;
2805 struct lpfc_iocbq
*iocbq
;
2806 struct lpfc_iocbq
*iocbqrsp
;
2810 if (!rdata
->pnode
|| !NLP_CHK_NODE_ACT(rdata
->pnode
))
2813 lpfc_cmd
->rdata
= rdata
;
2814 status
= lpfc_scsi_prep_task_mgmt_cmd(vport
, lpfc_cmd
, lun
,
2819 iocbq
= &lpfc_cmd
->cur_iocbq
;
2820 iocbqrsp
= lpfc_sli_get_iocbq(phba
);
2825 /* Issue Target Reset to TGT <num> */
2826 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2827 "0702 Issue Target Reset to TGT %d Data: x%x x%x\n",
2828 tgt_id
, rdata
->pnode
->nlp_rpi
, rdata
->pnode
->nlp_flag
);
2829 status
= lpfc_sli_issue_iocb_wait(phba
, LPFC_FCP_RING
,
2830 iocbq
, iocbqrsp
, lpfc_cmd
->timeout
);
2831 if (status
!= IOCB_SUCCESS
) {
2832 if (status
== IOCB_TIMEDOUT
) {
2833 iocbq
->iocb_cmpl
= lpfc_tskmgmt_def_cmpl
;
2834 ret
= TIMEOUT_ERROR
;
2837 lpfc_cmd
->status
= IOSTAT_DRIVER_REJECT
;
2840 lpfc_cmd
->result
= iocbqrsp
->iocb
.un
.ulpWord
[4];
2841 lpfc_cmd
->status
= iocbqrsp
->iocb
.ulpStatus
;
2842 if (lpfc_cmd
->status
== IOSTAT_LOCAL_REJECT
&&
2843 (lpfc_cmd
->result
& IOERR_DRVR_MASK
))
2844 lpfc_cmd
->status
= IOSTAT_DRIVER_REJECT
;
2847 lpfc_sli_release_iocbq(phba
, iocbqrsp
);
2852 * lpfc_info - Info entry point of scsi_host_template data structure
2853 * @host: The scsi host for which this call is being executed.
2855 * This routine provides module information about hba.
2858 * Pointer to char - Success.
2861 lpfc_info(struct Scsi_Host
*host
)
2863 struct lpfc_vport
*vport
= (struct lpfc_vport
*) host
->hostdata
;
2864 struct lpfc_hba
*phba
= vport
->phba
;
2866 static char lpfcinfobuf
[384];
2868 memset(lpfcinfobuf
,0,384);
2869 if (phba
&& phba
->pcidev
){
2870 strncpy(lpfcinfobuf
, phba
->ModelDesc
, 256);
2871 len
= strlen(lpfcinfobuf
);
2872 snprintf(lpfcinfobuf
+ len
,
2874 " on PCI bus %02x device %02x irq %d",
2875 phba
->pcidev
->bus
->number
,
2876 phba
->pcidev
->devfn
,
2878 len
= strlen(lpfcinfobuf
);
2879 if (phba
->Port
[0]) {
2880 snprintf(lpfcinfobuf
+ len
,
2890 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
2891 * @phba: The Hba for which this call is being executed.
2893 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
2894 * The default value of cfg_poll_tmo is 10 milliseconds.
2896 static __inline__
void lpfc_poll_rearm_timer(struct lpfc_hba
* phba
)
2898 unsigned long poll_tmo_expires
=
2899 (jiffies
+ msecs_to_jiffies(phba
->cfg_poll_tmo
));
2901 if (phba
->sli
.ring
[LPFC_FCP_RING
].txcmplq_cnt
)
2902 mod_timer(&phba
->fcp_poll_timer
,
2907 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
2908 * @phba: The Hba for which this call is being executed.
2910 * This routine starts the fcp_poll_timer of @phba.
2912 void lpfc_poll_start_timer(struct lpfc_hba
* phba
)
2914 lpfc_poll_rearm_timer(phba
);
2918 * lpfc_poll_timeout - Restart polling timer
2919 * @ptr: Map to lpfc_hba data structure pointer.
2921 * This routine restarts fcp_poll timer, when FCP ring polling is enable
2922 * and FCP Ring interrupt is disable.
2925 void lpfc_poll_timeout(unsigned long ptr
)
2927 struct lpfc_hba
*phba
= (struct lpfc_hba
*) ptr
;
2929 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
2930 lpfc_sli_poll_fcp_ring (phba
);
2931 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
2932 lpfc_poll_rearm_timer(phba
);
2937 * lpfc_queuecommand - scsi_host_template queuecommand entry point
2938 * @cmnd: Pointer to scsi_cmnd data structure.
2939 * @done: Pointer to done routine.
2941 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
2942 * This routine prepares an IOCB from scsi command and provides to firmware.
2943 * The @done callback is invoked after driver finished processing the command.
2947 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
2950 lpfc_queuecommand(struct scsi_cmnd
*cmnd
, void (*done
) (struct scsi_cmnd
*))
2952 struct Scsi_Host
*shost
= cmnd
->device
->host
;
2953 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
2954 struct lpfc_hba
*phba
= vport
->phba
;
2955 struct lpfc_rport_data
*rdata
= cmnd
->device
->hostdata
;
2956 struct lpfc_nodelist
*ndlp
= rdata
->pnode
;
2957 struct lpfc_scsi_buf
*lpfc_cmd
;
2958 struct fc_rport
*rport
= starget_to_rport(scsi_target(cmnd
->device
));
2961 err
= fc_remote_port_chkready(rport
);
2964 goto out_fail_command
;
2967 if (!(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
) &&
2968 scsi_get_prot_op(cmnd
) != SCSI_PROT_NORMAL
) {
2970 printk(KERN_ERR
"BLKGRD ERROR: rcvd protected cmd:%02x op:%02x "
2971 "str=%s without registering for BlockGuard - "
2972 "Rejecting command\n",
2973 cmnd
->cmnd
[0], scsi_get_prot_op(cmnd
),
2974 dif_op_str
[scsi_get_prot_op(cmnd
)]);
2975 goto out_fail_command
;
2979 * Catch race where our node has transitioned, but the
2980 * transport is still transitioning.
2982 if (!ndlp
|| !NLP_CHK_NODE_ACT(ndlp
)) {
2983 cmnd
->result
= ScsiResult(DID_TRANSPORT_DISRUPTED
, 0);
2984 goto out_fail_command
;
2986 if (vport
->cfg_max_scsicmpl_time
&&
2987 (atomic_read(&ndlp
->cmd_pending
) >= ndlp
->cmd_qdepth
))
2990 lpfc_cmd
= lpfc_get_scsi_buf(phba
);
2991 if (lpfc_cmd
== NULL
) {
2992 lpfc_rampdown_queue_depth(phba
);
2994 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2995 "0707 driver's buffer pool is empty, "
3001 * Store the midlayer's command structure for the completion phase
3002 * and complete the command initialization.
3004 lpfc_cmd
->pCmd
= cmnd
;
3005 lpfc_cmd
->rdata
= rdata
;
3006 lpfc_cmd
->timeout
= 0;
3007 lpfc_cmd
->start_time
= jiffies
;
3008 cmnd
->host_scribble
= (unsigned char *)lpfc_cmd
;
3009 cmnd
->scsi_done
= done
;
3011 if (scsi_get_prot_op(cmnd
) != SCSI_PROT_NORMAL
) {
3012 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3013 "9033 BLKGRD: rcvd protected cmd:%02x op:%02x "
3015 cmnd
->cmnd
[0], scsi_get_prot_op(cmnd
),
3016 dif_op_str
[scsi_get_prot_op(cmnd
)]);
3017 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3018 "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x "
3019 "%02x %02x %02x %02x %02x \n",
3020 cmnd
->cmnd
[0], cmnd
->cmnd
[1], cmnd
->cmnd
[2],
3021 cmnd
->cmnd
[3], cmnd
->cmnd
[4], cmnd
->cmnd
[5],
3022 cmnd
->cmnd
[6], cmnd
->cmnd
[7], cmnd
->cmnd
[8],
3024 if (cmnd
->cmnd
[0] == READ_10
)
3025 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3026 "9035 BLKGRD: READ @ sector %llu, "
3028 (unsigned long long)scsi_get_lba(cmnd
),
3029 blk_rq_sectors(cmnd
->request
));
3030 else if (cmnd
->cmnd
[0] == WRITE_10
)
3031 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3032 "9036 BLKGRD: WRITE @ sector %llu, "
3033 "count %u cmd=%p\n",
3034 (unsigned long long)scsi_get_lba(cmnd
),
3035 blk_rq_sectors(cmnd
->request
),
3038 err
= lpfc_bg_scsi_prep_dma_buf(phba
, lpfc_cmd
);
3040 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3041 "9038 BLKGRD: rcvd unprotected cmd:%02x op:%02x"
3043 cmnd
->cmnd
[0], scsi_get_prot_op(cmnd
),
3044 dif_op_str
[scsi_get_prot_op(cmnd
)]);
3045 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3046 "9039 BLKGRD: CDB: %02x %02x %02x %02x %02x "
3047 "%02x %02x %02x %02x %02x \n",
3048 cmnd
->cmnd
[0], cmnd
->cmnd
[1], cmnd
->cmnd
[2],
3049 cmnd
->cmnd
[3], cmnd
->cmnd
[4], cmnd
->cmnd
[5],
3050 cmnd
->cmnd
[6], cmnd
->cmnd
[7], cmnd
->cmnd
[8],
3052 if (cmnd
->cmnd
[0] == READ_10
)
3053 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3054 "9040 dbg: READ @ sector %llu, "
3056 (unsigned long long)scsi_get_lba(cmnd
),
3057 blk_rq_sectors(cmnd
->request
));
3058 else if (cmnd
->cmnd
[0] == WRITE_10
)
3059 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3060 "9041 dbg: WRITE @ sector %llu, "
3061 "count %u cmd=%p\n",
3062 (unsigned long long)scsi_get_lba(cmnd
),
3063 blk_rq_sectors(cmnd
->request
), cmnd
);
3065 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
3066 "9042 dbg: parser not implemented\n");
3067 err
= lpfc_scsi_prep_dma_buf(phba
, lpfc_cmd
);
3071 goto out_host_busy_free_buf
;
3073 lpfc_scsi_prep_cmnd(vport
, lpfc_cmd
, ndlp
);
3075 atomic_inc(&ndlp
->cmd_pending
);
3076 err
= lpfc_sli_issue_iocb(phba
, LPFC_FCP_RING
,
3077 &lpfc_cmd
->cur_iocbq
, SLI_IOCB_RET_IOCB
);
3079 atomic_dec(&ndlp
->cmd_pending
);
3080 goto out_host_busy_free_buf
;
3082 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
3083 lpfc_sli_poll_fcp_ring(phba
);
3084 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
3085 lpfc_poll_rearm_timer(phba
);
3090 out_host_busy_free_buf
:
3091 lpfc_scsi_unprep_dma_buf(phba
, lpfc_cmd
);
3092 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3094 return SCSI_MLQUEUE_HOST_BUSY
;
3102 * lpfc_block_error_handler - Routine to block error handler
3103 * @cmnd: Pointer to scsi_cmnd data structure.
3105 * This routine blocks execution till fc_rport state is not FC_PORSTAT_BLCOEKD.
3108 lpfc_block_error_handler(struct scsi_cmnd
*cmnd
)
3110 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3111 struct fc_rport
*rport
= starget_to_rport(scsi_target(cmnd
->device
));
3113 spin_lock_irq(shost
->host_lock
);
3114 while (rport
->port_state
== FC_PORTSTATE_BLOCKED
) {
3115 spin_unlock_irq(shost
->host_lock
);
3117 spin_lock_irq(shost
->host_lock
);
3119 spin_unlock_irq(shost
->host_lock
);
3124 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
3125 * @cmnd: Pointer to scsi_cmnd data structure.
3127 * This routine aborts @cmnd pending in base driver.
3134 lpfc_abort_handler(struct scsi_cmnd
*cmnd
)
3136 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3137 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
3138 struct lpfc_hba
*phba
= vport
->phba
;
3139 struct lpfc_iocbq
*iocb
;
3140 struct lpfc_iocbq
*abtsiocb
;
3141 struct lpfc_scsi_buf
*lpfc_cmd
;
3144 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq
);
3146 lpfc_block_error_handler(cmnd
);
3147 lpfc_cmd
= (struct lpfc_scsi_buf
*)cmnd
->host_scribble
;
3151 * If pCmd field of the corresponding lpfc_scsi_buf structure
3152 * points to a different SCSI command, then the driver has
3153 * already completed this command, but the midlayer did not
3154 * see the completion before the eh fired. Just return
3157 iocb
= &lpfc_cmd
->cur_iocbq
;
3158 if (lpfc_cmd
->pCmd
!= cmnd
)
3161 BUG_ON(iocb
->context1
!= lpfc_cmd
);
3163 abtsiocb
= lpfc_sli_get_iocbq(phba
);
3164 if (abtsiocb
== NULL
) {
3170 * The scsi command can not be in txq and it is in flight because the
3171 * pCmd is still pointig at the SCSI command we have to abort. There
3172 * is no need to search the txcmplq. Just send an abort to the FW.
3176 icmd
= &abtsiocb
->iocb
;
3177 icmd
->un
.acxri
.abortType
= ABORT_TYPE_ABTS
;
3178 icmd
->un
.acxri
.abortContextTag
= cmd
->ulpContext
;
3179 if (phba
->sli_rev
== LPFC_SLI_REV4
)
3180 icmd
->un
.acxri
.abortIoTag
= iocb
->sli4_xritag
;
3182 icmd
->un
.acxri
.abortIoTag
= cmd
->ulpIoTag
;
3185 icmd
->ulpClass
= cmd
->ulpClass
;
3186 if (lpfc_is_link_up(phba
))
3187 icmd
->ulpCommand
= CMD_ABORT_XRI_CN
;
3189 icmd
->ulpCommand
= CMD_CLOSE_XRI_CN
;
3191 abtsiocb
->iocb_cmpl
= lpfc_sli_abort_fcp_cmpl
;
3192 abtsiocb
->vport
= vport
;
3193 if (lpfc_sli_issue_iocb(phba
, LPFC_FCP_RING
, abtsiocb
, 0) ==
3195 lpfc_sli_release_iocbq(phba
, abtsiocb
);
3200 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
3201 lpfc_sli_poll_fcp_ring (phba
);
3203 lpfc_cmd
->waitq
= &waitq
;
3204 /* Wait for abort to complete */
3205 wait_event_timeout(waitq
,
3206 (lpfc_cmd
->pCmd
!= cmnd
),
3207 (2*vport
->cfg_devloss_tmo
*HZ
));
3209 spin_lock_irq(shost
->host_lock
);
3210 lpfc_cmd
->waitq
= NULL
;
3211 spin_unlock_irq(shost
->host_lock
);
3213 if (lpfc_cmd
->pCmd
== cmnd
) {
3215 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3216 "0748 abort handler timed out waiting "
3217 "for abort to complete: ret %#x, ID %d, "
3218 "LUN %d, snum %#lx\n",
3219 ret
, cmnd
->device
->id
, cmnd
->device
->lun
,
3220 cmnd
->serial_number
);
3224 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3225 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
3226 "LUN %d snum %#lx\n", ret
, cmnd
->device
->id
,
3227 cmnd
->device
->lun
, cmnd
->serial_number
);
3232 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
3233 * @cmnd: Pointer to scsi_cmnd data structure.
3235 * This routine does a device reset by sending a TARGET_RESET task management
3243 lpfc_device_reset_handler(struct scsi_cmnd
*cmnd
)
3245 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3246 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
3247 struct lpfc_hba
*phba
= vport
->phba
;
3248 struct lpfc_scsi_buf
*lpfc_cmd
;
3249 struct lpfc_iocbq
*iocbq
, *iocbqrsp
;
3250 struct lpfc_rport_data
*rdata
= cmnd
->device
->hostdata
;
3251 struct lpfc_nodelist
*pnode
= rdata
->pnode
;
3252 unsigned long later
;
3256 struct lpfc_scsi_event_header scsi_event
;
3258 lpfc_block_error_handler(cmnd
);
3260 * If target is not in a MAPPED state, delay the reset until
3261 * target is rediscovered or devloss timeout expires.
3263 later
= msecs_to_jiffies(2 * vport
->cfg_devloss_tmo
* 1000) + jiffies
;
3264 while (time_after(later
, jiffies
)) {
3265 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
))
3267 if (pnode
->nlp_state
== NLP_STE_MAPPED_NODE
)
3269 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
3270 rdata
= cmnd
->device
->hostdata
;
3273 pnode
= rdata
->pnode
;
3276 scsi_event
.event_type
= FC_REG_SCSI_EVENT
;
3277 scsi_event
.subcategory
= LPFC_EVENT_TGTRESET
;
3279 memcpy(scsi_event
.wwpn
, &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
3280 memcpy(scsi_event
.wwnn
, &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
3282 fc_host_post_vendor_event(shost
,
3283 fc_get_event_number(),
3285 (char *)&scsi_event
,
3288 if (!rdata
|| pnode
->nlp_state
!= NLP_STE_MAPPED_NODE
) {
3289 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3290 "0721 LUN Reset rport "
3291 "failure: msec x%x rdata x%p\n",
3292 jiffies_to_msecs(jiffies
- later
), rdata
);
3295 lpfc_cmd
= lpfc_get_scsi_buf(phba
);
3296 if (lpfc_cmd
== NULL
)
3298 lpfc_cmd
->timeout
= 60;
3299 lpfc_cmd
->rdata
= rdata
;
3301 status
= lpfc_scsi_prep_task_mgmt_cmd(vport
, lpfc_cmd
,
3305 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3308 iocbq
= &lpfc_cmd
->cur_iocbq
;
3310 /* get a buffer for this IOCB command response */
3311 iocbqrsp
= lpfc_sli_get_iocbq(phba
);
3312 if (iocbqrsp
== NULL
) {
3313 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3316 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
3317 "0703 Issue target reset to TGT %d LUN %d "
3318 "rpi x%x nlp_flag x%x\n", cmnd
->device
->id
,
3319 cmnd
->device
->lun
, pnode
->nlp_rpi
, pnode
->nlp_flag
);
3320 status
= lpfc_sli_issue_iocb_wait(phba
, LPFC_FCP_RING
,
3321 iocbq
, iocbqrsp
, lpfc_cmd
->timeout
);
3322 if (status
== IOCB_TIMEDOUT
) {
3323 iocbq
->iocb_cmpl
= lpfc_tskmgmt_def_cmpl
;
3324 ret
= TIMEOUT_ERROR
;
3326 if (status
!= IOCB_SUCCESS
)
3328 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3330 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3331 "0713 SCSI layer issued device reset (%d, %d) "
3332 "return x%x status x%x result x%x\n",
3333 cmnd
->device
->id
, cmnd
->device
->lun
, ret
,
3334 iocbqrsp
->iocb
.ulpStatus
,
3335 iocbqrsp
->iocb
.un
.ulpWord
[4]);
3336 lpfc_sli_release_iocbq(phba
, iocbqrsp
);
3337 cnt
= lpfc_sli_sum_iocb(vport
, cmnd
->device
->id
, cmnd
->device
->lun
,
3340 lpfc_sli_abort_iocb(vport
, &phba
->sli
.ring
[phba
->sli
.fcp_ring
],
3341 cmnd
->device
->id
, cmnd
->device
->lun
,
3343 later
= msecs_to_jiffies(2 * vport
->cfg_devloss_tmo
* 1000) + jiffies
;
3344 while (time_after(later
, jiffies
) && cnt
) {
3345 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
3346 cnt
= lpfc_sli_sum_iocb(vport
, cmnd
->device
->id
,
3347 cmnd
->device
->lun
, LPFC_CTX_TGT
);
3350 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3351 "0719 device reset I/O flush failure: "
3359 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
3360 * @cmnd: Pointer to scsi_cmnd data structure.
3362 * This routine does target reset to all target on @cmnd->device->host.
3369 lpfc_bus_reset_handler(struct scsi_cmnd
*cmnd
)
3371 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3372 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
3373 struct lpfc_hba
*phba
= vport
->phba
;
3374 struct lpfc_nodelist
*ndlp
= NULL
;
3376 int ret
= SUCCESS
, status
= SUCCESS
, i
;
3378 struct lpfc_scsi_buf
* lpfc_cmd
;
3379 unsigned long later
;
3380 struct lpfc_scsi_event_header scsi_event
;
3382 scsi_event
.event_type
= FC_REG_SCSI_EVENT
;
3383 scsi_event
.subcategory
= LPFC_EVENT_BUSRESET
;
3385 memcpy(scsi_event
.wwpn
, &vport
->fc_portname
, sizeof(struct lpfc_name
));
3386 memcpy(scsi_event
.wwnn
, &vport
->fc_nodename
, sizeof(struct lpfc_name
));
3388 fc_host_post_vendor_event(shost
,
3389 fc_get_event_number(),
3391 (char *)&scsi_event
,
3394 lpfc_block_error_handler(cmnd
);
3396 * Since the driver manages a single bus device, reset all
3397 * targets known to the driver. Should any target reset
3398 * fail, this routine returns failure to the midlayer.
3400 for (i
= 0; i
< LPFC_MAX_TARGET
; i
++) {
3401 /* Search for mapped node by target ID */
3403 spin_lock_irq(shost
->host_lock
);
3404 list_for_each_entry(ndlp
, &vport
->fc_nodes
, nlp_listp
) {
3405 if (!NLP_CHK_NODE_ACT(ndlp
))
3407 if (ndlp
->nlp_state
== NLP_STE_MAPPED_NODE
&&
3408 ndlp
->nlp_sid
== i
&&
3414 spin_unlock_irq(shost
->host_lock
);
3417 lpfc_cmd
= lpfc_get_scsi_buf(phba
);
3419 lpfc_cmd
->timeout
= 60;
3420 status
= lpfc_scsi_tgt_reset(lpfc_cmd
, vport
, i
,
3422 ndlp
->rport
->dd_data
);
3423 if (status
!= TIMEOUT_ERROR
)
3424 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3426 if (!lpfc_cmd
|| status
!= SUCCESS
) {
3427 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3428 "0700 Bus Reset on target %d failed\n",
3434 * All outstanding txcmplq I/Os should have been aborted by
3435 * the targets. Unfortunately, some targets do not abide by
3436 * this forcing the driver to double check.
3438 cnt
= lpfc_sli_sum_iocb(vport
, 0, 0, LPFC_CTX_HOST
);
3440 lpfc_sli_abort_iocb(vport
, &phba
->sli
.ring
[phba
->sli
.fcp_ring
],
3441 0, 0, LPFC_CTX_HOST
);
3442 later
= msecs_to_jiffies(2 * vport
->cfg_devloss_tmo
* 1000) + jiffies
;
3443 while (time_after(later
, jiffies
) && cnt
) {
3444 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
3445 cnt
= lpfc_sli_sum_iocb(vport
, 0, 0, LPFC_CTX_HOST
);
3448 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3449 "0715 Bus Reset I/O flush failure: "
3450 "cnt x%x left x%x\n", cnt
, i
);
3453 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3454 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret
);
3459 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
3460 * @sdev: Pointer to scsi_device.
3462 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
3463 * globally available list of scsi buffers. This routine also makes sure scsi
3464 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
3465 * of scsi buffer exists for the lifetime of the driver.
3472 lpfc_slave_alloc(struct scsi_device
*sdev
)
3474 struct lpfc_vport
*vport
= (struct lpfc_vport
*) sdev
->host
->hostdata
;
3475 struct lpfc_hba
*phba
= vport
->phba
;
3476 struct fc_rport
*rport
= starget_to_rport(scsi_target(sdev
));
3478 uint32_t num_to_alloc
= 0;
3479 int num_allocated
= 0;
3481 if (!rport
|| fc_remote_port_chkready(rport
))
3484 sdev
->hostdata
= rport
->dd_data
;
3487 * Populate the cmds_per_lun count scsi_bufs into this host's globally
3488 * available list of scsi buffers. Don't allocate more than the
3489 * HBA limit conveyed to the midlayer via the host structure. The
3490 * formula accounts for the lun_queue_depth + error handlers + 1
3491 * extra. This list of scsi bufs exists for the lifetime of the driver.
3493 total
= phba
->total_scsi_bufs
;
3494 num_to_alloc
= vport
->cfg_lun_queue_depth
+ 2;
3496 /* Allow some exchanges to be available always to complete discovery */
3497 if (total
>= phba
->cfg_hba_queue_depth
- LPFC_DISC_IOCB_BUFF_COUNT
) {
3498 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3499 "0704 At limitation of %d preallocated "
3500 "command buffers\n", total
);
3502 /* Allow some exchanges to be available always to complete discovery */
3503 } else if (total
+ num_to_alloc
>
3504 phba
->cfg_hba_queue_depth
- LPFC_DISC_IOCB_BUFF_COUNT
) {
3505 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3506 "0705 Allocation request of %d "
3507 "command buffers will exceed max of %d. "
3508 "Reducing allocation request to %d.\n",
3509 num_to_alloc
, phba
->cfg_hba_queue_depth
,
3510 (phba
->cfg_hba_queue_depth
- total
));
3511 num_to_alloc
= phba
->cfg_hba_queue_depth
- total
;
3513 num_allocated
= lpfc_new_scsi_buf(vport
, num_to_alloc
);
3514 if (num_to_alloc
!= num_allocated
) {
3515 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3516 "0708 Allocation request of %d "
3517 "command buffers did not succeed. "
3518 "Allocated %d buffers.\n",
3519 num_to_alloc
, num_allocated
);
3525 * lpfc_slave_configure - scsi_host_template slave_configure entry point
3526 * @sdev: Pointer to scsi_device.
3528 * This routine configures following items
3529 * - Tag command queuing support for @sdev if supported.
3530 * - Dev loss time out value of fc_rport.
3531 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
3537 lpfc_slave_configure(struct scsi_device
*sdev
)
3539 struct lpfc_vport
*vport
= (struct lpfc_vport
*) sdev
->host
->hostdata
;
3540 struct lpfc_hba
*phba
= vport
->phba
;
3541 struct fc_rport
*rport
= starget_to_rport(sdev
->sdev_target
);
3543 if (sdev
->tagged_supported
)
3544 scsi_activate_tcq(sdev
, vport
->cfg_lun_queue_depth
);
3546 scsi_deactivate_tcq(sdev
, vport
->cfg_lun_queue_depth
);
3549 * Initialize the fc transport attributes for the target
3550 * containing this scsi device. Also note that the driver's
3551 * target pointer is stored in the starget_data for the
3552 * driver's sysfs entry point functions.
3554 rport
->dev_loss_tmo
= vport
->cfg_devloss_tmo
;
3556 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
3557 lpfc_sli_poll_fcp_ring(phba
);
3558 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
3559 lpfc_poll_rearm_timer(phba
);
3566 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
3567 * @sdev: Pointer to scsi_device.
3569 * This routine sets @sdev hostatdata filed to null.
3572 lpfc_slave_destroy(struct scsi_device
*sdev
)
3574 sdev
->hostdata
= NULL
;
3579 struct scsi_host_template lpfc_template
= {
3580 .module
= THIS_MODULE
,
3581 .name
= LPFC_DRIVER_NAME
,
3583 .queuecommand
= lpfc_queuecommand
,
3584 .eh_abort_handler
= lpfc_abort_handler
,
3585 .eh_device_reset_handler
= lpfc_device_reset_handler
,
3586 .eh_bus_reset_handler
= lpfc_bus_reset_handler
,
3587 .slave_alloc
= lpfc_slave_alloc
,
3588 .slave_configure
= lpfc_slave_configure
,
3589 .slave_destroy
= lpfc_slave_destroy
,
3590 .scan_finished
= lpfc_scan_finished
,
3592 .sg_tablesize
= LPFC_DEFAULT_SG_SEG_CNT
,
3593 .cmd_per_lun
= LPFC_CMD_PER_LUN
,
3594 .use_clustering
= ENABLE_CLUSTERING
,
3595 .shost_attrs
= lpfc_hba_attrs
,
3596 .max_sectors
= 0xFFFF,
3599 struct scsi_host_template lpfc_vport_template
= {
3600 .module
= THIS_MODULE
,
3601 .name
= LPFC_DRIVER_NAME
,
3603 .queuecommand
= lpfc_queuecommand
,
3604 .eh_abort_handler
= lpfc_abort_handler
,
3605 .eh_device_reset_handler
= lpfc_device_reset_handler
,
3606 .eh_bus_reset_handler
= lpfc_bus_reset_handler
,
3607 .slave_alloc
= lpfc_slave_alloc
,
3608 .slave_configure
= lpfc_slave_configure
,
3609 .slave_destroy
= lpfc_slave_destroy
,
3610 .scan_finished
= lpfc_scan_finished
,
3612 .sg_tablesize
= LPFC_DEFAULT_SG_SEG_CNT
,
3613 .cmd_per_lun
= LPFC_CMD_PER_LUN
,
3614 .use_clustering
= ENABLE_CLUSTERING
,
3615 .shost_attrs
= lpfc_vport_attrs
,
3616 .max_sectors
= 0xFFFF,