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/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/delay.h>
25 #include <asm/unaligned.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_eh.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_tcq.h>
32 #include <scsi/scsi_transport_fc.h>
34 #include "lpfc_version.h"
38 #include "lpfc_sli4.h"
40 #include "lpfc_disc.h"
41 #include "lpfc_scsi.h"
43 #include "lpfc_logmsg.h"
44 #include "lpfc_crtn.h"
45 #include "lpfc_vport.h"
47 #define LPFC_RESET_WAIT 2
48 #define LPFC_ABORT_WAIT 2
52 static char *dif_op_str
[] = {
54 "SCSI_PROT_READ_INSERT",
55 "SCSI_PROT_WRITE_STRIP",
56 "SCSI_PROT_READ_STRIP",
57 "SCSI_PROT_WRITE_INSERT",
58 "SCSI_PROT_READ_PASS",
59 "SCSI_PROT_WRITE_PASS",
62 lpfc_release_scsi_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
);
64 lpfc_release_scsi_buf_s3(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
);
67 lpfc_debug_save_data(struct lpfc_hba
*phba
, struct scsi_cmnd
*cmnd
)
70 struct scatterlist
*sgde
= scsi_sglist(cmnd
);
72 if (!_dump_buf_data
) {
73 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
74 "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
81 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
82 "9051 BLKGRD: ERROR: data scatterlist is null\n");
86 dst
= (void *) _dump_buf_data
;
89 memcpy(dst
, src
, sgde
->length
);
96 lpfc_debug_save_dif(struct lpfc_hba
*phba
, struct scsi_cmnd
*cmnd
)
99 struct scatterlist
*sgde
= scsi_prot_sglist(cmnd
);
101 if (!_dump_buf_dif
) {
102 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
103 "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
109 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
110 "9053 BLKGRD: ERROR: prot scatterlist is null\n");
117 memcpy(dst
, src
, sgde
->length
);
119 sgde
= sg_next(sgde
);
124 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
125 * @phba: Pointer to HBA object.
126 * @lpfc_cmd: lpfc scsi command object pointer.
128 * This function is called from the lpfc_prep_task_mgmt_cmd function to
129 * set the last bit in the response sge entry.
132 lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba
*phba
,
133 struct lpfc_scsi_buf
*lpfc_cmd
)
135 struct sli4_sge
*sgl
= (struct sli4_sge
*)lpfc_cmd
->fcp_bpl
;
138 sgl
->word2
= le32_to_cpu(sgl
->word2
);
139 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
140 sgl
->word2
= cpu_to_le32(sgl
->word2
);
145 * lpfc_update_stats - Update statistical data for the command completion
146 * @phba: Pointer to HBA object.
147 * @lpfc_cmd: lpfc scsi command object pointer.
149 * This function is called when there is a command completion and this
150 * function updates the statistical data for the command completion.
153 lpfc_update_stats(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
155 struct lpfc_rport_data
*rdata
= lpfc_cmd
->rdata
;
156 struct lpfc_nodelist
*pnode
= rdata
->pnode
;
157 struct scsi_cmnd
*cmd
= lpfc_cmd
->pCmd
;
159 struct Scsi_Host
*shost
= cmd
->device
->host
;
160 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
161 unsigned long latency
;
167 latency
= jiffies_to_msecs((long)jiffies
- (long)lpfc_cmd
->start_time
);
169 spin_lock_irqsave(shost
->host_lock
, flags
);
170 if (!vport
->stat_data_enabled
||
171 vport
->stat_data_blocked
||
173 (phba
->bucket_type
== LPFC_NO_BUCKET
)) {
174 spin_unlock_irqrestore(shost
->host_lock
, flags
);
178 if (phba
->bucket_type
== LPFC_LINEAR_BUCKET
) {
179 i
= (latency
+ phba
->bucket_step
- 1 - phba
->bucket_base
)/
181 /* check array subscript bounds */
184 else if (i
>= LPFC_MAX_BUCKET_COUNT
)
185 i
= LPFC_MAX_BUCKET_COUNT
- 1;
187 for (i
= 0; i
< LPFC_MAX_BUCKET_COUNT
-1; i
++)
188 if (latency
<= (phba
->bucket_base
+
189 ((1<<i
)*phba
->bucket_step
)))
193 pnode
->lat_data
[i
].cmd_count
++;
194 spin_unlock_irqrestore(shost
->host_lock
, flags
);
198 * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
199 * @phba: Pointer to HBA context object.
200 * @vport: Pointer to vport object.
201 * @ndlp: Pointer to FC node associated with the target.
202 * @lun: Lun number of the scsi device.
203 * @old_val: Old value of the queue depth.
204 * @new_val: New value of the queue depth.
206 * This function sends an event to the mgmt application indicating
207 * there is a change in the scsi device queue depth.
210 lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba
*phba
,
211 struct lpfc_vport
*vport
,
212 struct lpfc_nodelist
*ndlp
,
217 struct lpfc_fast_path_event
*fast_path_evt
;
220 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
224 fast_path_evt
->un
.queue_depth_evt
.scsi_event
.event_type
=
226 fast_path_evt
->un
.queue_depth_evt
.scsi_event
.subcategory
=
227 LPFC_EVENT_VARQUEDEPTH
;
229 /* Report all luns with change in queue depth */
230 fast_path_evt
->un
.queue_depth_evt
.scsi_event
.lun
= lun
;
231 if (ndlp
&& NLP_CHK_NODE_ACT(ndlp
)) {
232 memcpy(&fast_path_evt
->un
.queue_depth_evt
.scsi_event
.wwpn
,
233 &ndlp
->nlp_portname
, sizeof(struct lpfc_name
));
234 memcpy(&fast_path_evt
->un
.queue_depth_evt
.scsi_event
.wwnn
,
235 &ndlp
->nlp_nodename
, sizeof(struct lpfc_name
));
238 fast_path_evt
->un
.queue_depth_evt
.oldval
= old_val
;
239 fast_path_evt
->un
.queue_depth_evt
.newval
= new_val
;
240 fast_path_evt
->vport
= vport
;
242 fast_path_evt
->work_evt
.evt
= LPFC_EVT_FASTPATH_MGMT_EVT
;
243 spin_lock_irqsave(&phba
->hbalock
, flags
);
244 list_add_tail(&fast_path_evt
->work_evt
.evt_listp
, &phba
->work_list
);
245 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
246 lpfc_worker_wake_up(phba
);
252 * lpfc_change_queue_depth - Alter scsi device queue depth
253 * @sdev: Pointer the scsi device on which to change the queue depth.
254 * @qdepth: New queue depth to set the sdev to.
255 * @reason: The reason for the queue depth change.
257 * This function is called by the midlayer and the LLD to alter the queue
258 * depth for a scsi device. This function sets the queue depth to the new
259 * value and sends an event out to log the queue depth change.
262 lpfc_change_queue_depth(struct scsi_device
*sdev
, int qdepth
, int reason
)
264 struct lpfc_vport
*vport
= (struct lpfc_vport
*) sdev
->host
->hostdata
;
265 struct lpfc_hba
*phba
= vport
->phba
;
266 struct lpfc_rport_data
*rdata
;
267 unsigned long new_queue_depth
, old_queue_depth
;
269 old_queue_depth
= sdev
->queue_depth
;
270 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
271 new_queue_depth
= sdev
->queue_depth
;
272 rdata
= sdev
->hostdata
;
274 lpfc_send_sdev_queuedepth_change_event(phba
, vport
,
275 rdata
->pnode
, sdev
->lun
,
278 return sdev
->queue_depth
;
282 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
283 * @phba: The Hba for which this call is being executed.
285 * This routine is called when there is resource error in driver or firmware.
286 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
287 * posts at most 1 event each second. This routine wakes up worker thread of
288 * @phba to process WORKER_RAM_DOWN_EVENT event.
290 * This routine should be called with no lock held.
293 lpfc_rampdown_queue_depth(struct lpfc_hba
*phba
)
298 spin_lock_irqsave(&phba
->hbalock
, flags
);
299 atomic_inc(&phba
->num_rsrc_err
);
300 phba
->last_rsrc_error_time
= jiffies
;
302 if ((phba
->last_ramp_down_time
+ QUEUE_RAMP_DOWN_INTERVAL
) > jiffies
) {
303 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
307 phba
->last_ramp_down_time
= jiffies
;
309 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
311 spin_lock_irqsave(&phba
->pport
->work_port_lock
, flags
);
312 evt_posted
= phba
->pport
->work_port_events
& WORKER_RAMP_DOWN_QUEUE
;
314 phba
->pport
->work_port_events
|= WORKER_RAMP_DOWN_QUEUE
;
315 spin_unlock_irqrestore(&phba
->pport
->work_port_lock
, flags
);
318 lpfc_worker_wake_up(phba
);
323 * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread
324 * @phba: The Hba for which this call is being executed.
326 * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine
327 * post at most 1 event every 5 minute after last_ramp_up_time or
328 * last_rsrc_error_time. This routine wakes up worker thread of @phba
329 * to process WORKER_RAM_DOWN_EVENT event.
331 * This routine should be called with no lock held.
334 lpfc_rampup_queue_depth(struct lpfc_vport
*vport
,
335 uint32_t queue_depth
)
338 struct lpfc_hba
*phba
= vport
->phba
;
340 atomic_inc(&phba
->num_cmd_success
);
342 if (vport
->cfg_lun_queue_depth
<= queue_depth
)
344 spin_lock_irqsave(&phba
->hbalock
, flags
);
345 if (time_before(jiffies
,
346 phba
->last_ramp_up_time
+ QUEUE_RAMP_UP_INTERVAL
) ||
348 phba
->last_rsrc_error_time
+ QUEUE_RAMP_UP_INTERVAL
)) {
349 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
352 phba
->last_ramp_up_time
= jiffies
;
353 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
355 spin_lock_irqsave(&phba
->pport
->work_port_lock
, flags
);
356 evt_posted
= phba
->pport
->work_port_events
& WORKER_RAMP_UP_QUEUE
;
358 phba
->pport
->work_port_events
|= WORKER_RAMP_UP_QUEUE
;
359 spin_unlock_irqrestore(&phba
->pport
->work_port_lock
, flags
);
362 lpfc_worker_wake_up(phba
);
367 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
368 * @phba: The Hba for which this call is being executed.
370 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
371 * thread.This routine reduces queue depth for all scsi device on each vport
372 * associated with @phba.
375 lpfc_ramp_down_queue_handler(struct lpfc_hba
*phba
)
377 struct lpfc_vport
**vports
;
378 struct Scsi_Host
*shost
;
379 struct scsi_device
*sdev
;
380 unsigned long new_queue_depth
;
381 unsigned long num_rsrc_err
, num_cmd_success
;
384 num_rsrc_err
= atomic_read(&phba
->num_rsrc_err
);
385 num_cmd_success
= atomic_read(&phba
->num_cmd_success
);
387 vports
= lpfc_create_vport_work_array(phba
);
389 for (i
= 0; i
<= phba
->max_vports
&& vports
[i
] != NULL
; i
++) {
390 shost
= lpfc_shost_from_vport(vports
[i
]);
391 shost_for_each_device(sdev
, shost
) {
393 sdev
->queue_depth
* num_rsrc_err
/
394 (num_rsrc_err
+ num_cmd_success
);
395 if (!new_queue_depth
)
396 new_queue_depth
= sdev
->queue_depth
- 1;
398 new_queue_depth
= sdev
->queue_depth
-
400 lpfc_change_queue_depth(sdev
, new_queue_depth
,
401 SCSI_QDEPTH_DEFAULT
);
404 lpfc_destroy_vport_work_array(phba
, vports
);
405 atomic_set(&phba
->num_rsrc_err
, 0);
406 atomic_set(&phba
->num_cmd_success
, 0);
410 * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler
411 * @phba: The Hba for which this call is being executed.
413 * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker
414 * thread.This routine increases queue depth for all scsi device on each vport
415 * associated with @phba by 1. This routine also sets @phba num_rsrc_err and
416 * num_cmd_success to zero.
419 lpfc_ramp_up_queue_handler(struct lpfc_hba
*phba
)
421 struct lpfc_vport
**vports
;
422 struct Scsi_Host
*shost
;
423 struct scsi_device
*sdev
;
426 vports
= lpfc_create_vport_work_array(phba
);
428 for (i
= 0; i
<= phba
->max_vports
&& vports
[i
] != NULL
; i
++) {
429 shost
= lpfc_shost_from_vport(vports
[i
]);
430 shost_for_each_device(sdev
, shost
) {
431 if (vports
[i
]->cfg_lun_queue_depth
<=
434 lpfc_change_queue_depth(sdev
,
436 SCSI_QDEPTH_RAMP_UP
);
439 lpfc_destroy_vport_work_array(phba
, vports
);
440 atomic_set(&phba
->num_rsrc_err
, 0);
441 atomic_set(&phba
->num_cmd_success
, 0);
445 * lpfc_scsi_dev_block - set all scsi hosts to block state
446 * @phba: Pointer to HBA context object.
448 * This function walks vport list and set each SCSI host to block state
449 * by invoking fc_remote_port_delete() routine. This function is invoked
450 * with EEH when device's PCI slot has been permanently disabled.
453 lpfc_scsi_dev_block(struct lpfc_hba
*phba
)
455 struct lpfc_vport
**vports
;
456 struct Scsi_Host
*shost
;
457 struct scsi_device
*sdev
;
458 struct fc_rport
*rport
;
461 vports
= lpfc_create_vport_work_array(phba
);
463 for (i
= 0; i
<= phba
->max_vports
&& vports
[i
] != NULL
; i
++) {
464 shost
= lpfc_shost_from_vport(vports
[i
]);
465 shost_for_each_device(sdev
, shost
) {
466 rport
= starget_to_rport(scsi_target(sdev
));
467 fc_remote_port_delete(rport
);
470 lpfc_destroy_vport_work_array(phba
, vports
);
474 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
475 * @vport: The virtual port for which this call being executed.
476 * @num_to_allocate: The requested number of buffers to allocate.
478 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
479 * the scsi buffer contains all the necessary information needed to initiate
480 * a SCSI I/O. The non-DMAable buffer region contains information to build
481 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
482 * and the initial BPL. In addition to allocating memory, the FCP CMND and
483 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
486 * int - number of scsi buffers that were allocated.
487 * 0 = failure, less than num_to_alloc is a partial failure.
490 lpfc_new_scsi_buf_s3(struct lpfc_vport
*vport
, int num_to_alloc
)
492 struct lpfc_hba
*phba
= vport
->phba
;
493 struct lpfc_scsi_buf
*psb
;
494 struct ulp_bde64
*bpl
;
496 dma_addr_t pdma_phys_fcp_cmd
;
497 dma_addr_t pdma_phys_fcp_rsp
;
498 dma_addr_t pdma_phys_bpl
;
502 for (bcnt
= 0; bcnt
< num_to_alloc
; bcnt
++) {
503 psb
= kzalloc(sizeof(struct lpfc_scsi_buf
), GFP_KERNEL
);
508 * Get memory from the pci pool to map the virt space to pci
509 * bus space for an I/O. The DMA buffer includes space for the
510 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
511 * necessary to support the sg_tablesize.
513 psb
->data
= pci_pool_alloc(phba
->lpfc_scsi_dma_buf_pool
,
514 GFP_KERNEL
, &psb
->dma_handle
);
520 /* Initialize virtual ptrs to dma_buf region. */
521 memset(psb
->data
, 0, phba
->cfg_sg_dma_buf_size
);
523 /* Allocate iotag for psb->cur_iocbq. */
524 iotag
= lpfc_sli_next_iotag(phba
, &psb
->cur_iocbq
);
526 pci_pool_free(phba
->lpfc_scsi_dma_buf_pool
,
527 psb
->data
, psb
->dma_handle
);
531 psb
->cur_iocbq
.iocb_flag
|= LPFC_IO_FCP
;
533 psb
->fcp_cmnd
= psb
->data
;
534 psb
->fcp_rsp
= psb
->data
+ sizeof(struct fcp_cmnd
);
535 psb
->fcp_bpl
= psb
->data
+ sizeof(struct fcp_cmnd
) +
536 sizeof(struct fcp_rsp
);
538 /* Initialize local short-hand pointers. */
540 pdma_phys_fcp_cmd
= psb
->dma_handle
;
541 pdma_phys_fcp_rsp
= psb
->dma_handle
+ sizeof(struct fcp_cmnd
);
542 pdma_phys_bpl
= psb
->dma_handle
+ sizeof(struct fcp_cmnd
) +
543 sizeof(struct fcp_rsp
);
546 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
547 * are sg list bdes. Initialize the first two and leave the
548 * rest for queuecommand.
550 bpl
[0].addrHigh
= le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd
));
551 bpl
[0].addrLow
= le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd
));
552 bpl
[0].tus
.f
.bdeSize
= sizeof(struct fcp_cmnd
);
553 bpl
[0].tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
554 bpl
[0].tus
.w
= le32_to_cpu(bpl
[0].tus
.w
);
556 /* Setup the physical region for the FCP RSP */
557 bpl
[1].addrHigh
= le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp
));
558 bpl
[1].addrLow
= le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp
));
559 bpl
[1].tus
.f
.bdeSize
= sizeof(struct fcp_rsp
);
560 bpl
[1].tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
561 bpl
[1].tus
.w
= le32_to_cpu(bpl
[1].tus
.w
);
564 * Since the IOCB for the FCP I/O is built into this
565 * lpfc_scsi_buf, initialize it with all known data now.
567 iocb
= &psb
->cur_iocbq
.iocb
;
568 iocb
->un
.fcpi64
.bdl
.ulpIoTag32
= 0;
569 if ((phba
->sli_rev
== 3) &&
570 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
)) {
571 /* fill in immediate fcp command BDE */
572 iocb
->un
.fcpi64
.bdl
.bdeFlags
= BUFF_TYPE_BDE_IMMED
;
573 iocb
->un
.fcpi64
.bdl
.bdeSize
= sizeof(struct fcp_cmnd
);
574 iocb
->un
.fcpi64
.bdl
.addrLow
= offsetof(IOCB_t
,
576 iocb
->un
.fcpi64
.bdl
.addrHigh
= 0;
577 iocb
->ulpBdeCount
= 0;
579 /* fill in responce BDE */
580 iocb
->unsli3
.fcp_ext
.rbde
.tus
.f
.bdeFlags
=
582 iocb
->unsli3
.fcp_ext
.rbde
.tus
.f
.bdeSize
=
583 sizeof(struct fcp_rsp
);
584 iocb
->unsli3
.fcp_ext
.rbde
.addrLow
=
585 putPaddrLow(pdma_phys_fcp_rsp
);
586 iocb
->unsli3
.fcp_ext
.rbde
.addrHigh
=
587 putPaddrHigh(pdma_phys_fcp_rsp
);
589 iocb
->un
.fcpi64
.bdl
.bdeFlags
= BUFF_TYPE_BLP_64
;
590 iocb
->un
.fcpi64
.bdl
.bdeSize
=
591 (2 * sizeof(struct ulp_bde64
));
592 iocb
->un
.fcpi64
.bdl
.addrLow
=
593 putPaddrLow(pdma_phys_bpl
);
594 iocb
->un
.fcpi64
.bdl
.addrHigh
=
595 putPaddrHigh(pdma_phys_bpl
);
596 iocb
->ulpBdeCount
= 1;
599 iocb
->ulpClass
= CLASS3
;
600 psb
->status
= IOSTAT_SUCCESS
;
601 /* Put it back into the SCSI buffer list */
602 lpfc_release_scsi_buf_s3(phba
, psb
);
610 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
611 * @phba: pointer to lpfc hba data structure.
612 * @axri: pointer to the fcp xri abort wcqe structure.
614 * This routine is invoked by the worker thread to process a SLI4 fast-path
618 lpfc_sli4_fcp_xri_aborted(struct lpfc_hba
*phba
,
619 struct sli4_wcqe_xri_aborted
*axri
)
621 uint16_t xri
= bf_get(lpfc_wcqe_xa_xri
, axri
);
622 struct lpfc_scsi_buf
*psb
, *next_psb
;
623 unsigned long iflag
= 0;
624 struct lpfc_iocbq
*iocbq
;
627 spin_lock_irqsave(&phba
->hbalock
, iflag
);
628 spin_lock(&phba
->sli4_hba
.abts_scsi_buf_list_lock
);
629 list_for_each_entry_safe(psb
, next_psb
,
630 &phba
->sli4_hba
.lpfc_abts_scsi_buf_list
, list
) {
631 if (psb
->cur_iocbq
.sli4_xritag
== xri
) {
632 list_del(&psb
->list
);
634 psb
->status
= IOSTAT_SUCCESS
;
636 &phba
->sli4_hba
.abts_scsi_buf_list_lock
);
637 spin_unlock_irqrestore(&phba
->hbalock
, iflag
);
638 lpfc_release_scsi_buf_s4(phba
, psb
);
642 spin_unlock(&phba
->sli4_hba
.abts_scsi_buf_list_lock
);
643 for (i
= 1; i
<= phba
->sli
.last_iotag
; i
++) {
644 iocbq
= phba
->sli
.iocbq_lookup
[i
];
646 if (!(iocbq
->iocb_flag
& LPFC_IO_FCP
) ||
647 (iocbq
->iocb_flag
& LPFC_IO_LIBDFC
))
649 if (iocbq
->sli4_xritag
!= xri
)
651 psb
= container_of(iocbq
, struct lpfc_scsi_buf
, cur_iocbq
);
653 spin_unlock_irqrestore(&phba
->hbalock
, iflag
);
657 spin_unlock_irqrestore(&phba
->hbalock
, iflag
);
661 * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block
662 * @phba: pointer to lpfc hba data structure.
664 * This routine walks the list of scsi buffers that have been allocated and
665 * repost them to the HBA by using SGL block post. This is needed after a
666 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
667 * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
668 * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
670 * Returns: 0 = success, non-zero failure.
673 lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba
*phba
)
675 struct lpfc_scsi_buf
*psb
;
676 int index
, status
, bcnt
= 0, rcnt
= 0, rc
= 0;
679 for (index
= 0; index
< phba
->sli4_hba
.scsi_xri_cnt
; index
++) {
680 psb
= phba
->sli4_hba
.lpfc_scsi_psb_array
[index
];
682 /* Remove from SCSI buffer list */
683 list_del(&psb
->list
);
684 /* Add it to a local SCSI buffer list */
685 list_add_tail(&psb
->list
, &sblist
);
686 if (++rcnt
== LPFC_NEMBED_MBOX_SGL_CNT
) {
691 /* A hole present in the XRI array, need to skip */
694 if (index
== phba
->sli4_hba
.scsi_xri_cnt
- 1)
695 /* End of XRI array for SCSI buffer, complete */
698 /* Continue until collect up to a nembed page worth of sgls */
701 /* Now, post the SCSI buffer list sgls as a block */
702 status
= lpfc_sli4_post_scsi_sgl_block(phba
, &sblist
, bcnt
);
703 /* Reset SCSI buffer count for next round of posting */
705 while (!list_empty(&sblist
)) {
706 list_remove_head(&sblist
, psb
, struct lpfc_scsi_buf
,
709 /* Put this back on the abort scsi list */
714 psb
->status
= IOSTAT_SUCCESS
;
716 /* Put it back into the SCSI buffer list */
717 lpfc_release_scsi_buf_s4(phba
, psb
);
724 * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
725 * @vport: The virtual port for which this call being executed.
726 * @num_to_allocate: The requested number of buffers to allocate.
728 * This routine allocates a scsi buffer for device with SLI-4 interface spec,
729 * the scsi buffer contains all the necessary information needed to initiate
733 * int - number of scsi buffers that were allocated.
734 * 0 = failure, less than num_to_alloc is a partial failure.
737 lpfc_new_scsi_buf_s4(struct lpfc_vport
*vport
, int num_to_alloc
)
739 struct lpfc_hba
*phba
= vport
->phba
;
740 struct lpfc_scsi_buf
*psb
;
741 struct sli4_sge
*sgl
;
743 dma_addr_t pdma_phys_fcp_cmd
;
744 dma_addr_t pdma_phys_fcp_rsp
;
745 dma_addr_t pdma_phys_bpl
, pdma_phys_bpl1
;
746 uint16_t iotag
, last_xritag
= NO_XRI
;
747 int status
= 0, index
;
749 int non_sequential_xri
= 0;
753 for (bcnt
= 0; bcnt
< num_to_alloc
; bcnt
++) {
754 psb
= kzalloc(sizeof(struct lpfc_scsi_buf
), GFP_KERNEL
);
759 * Get memory from the pci pool to map the virt space to pci bus
760 * space for an I/O. The DMA buffer includes space for the
761 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
762 * necessary to support the sg_tablesize.
764 psb
->data
= pci_pool_alloc(phba
->lpfc_scsi_dma_buf_pool
,
765 GFP_KERNEL
, &psb
->dma_handle
);
771 /* Initialize virtual ptrs to dma_buf region. */
772 memset(psb
->data
, 0, phba
->cfg_sg_dma_buf_size
);
774 /* Allocate iotag for psb->cur_iocbq. */
775 iotag
= lpfc_sli_next_iotag(phba
, &psb
->cur_iocbq
);
781 psb
->cur_iocbq
.sli4_xritag
= lpfc_sli4_next_xritag(phba
);
782 if (psb
->cur_iocbq
.sli4_xritag
== NO_XRI
) {
783 pci_pool_free(phba
->lpfc_scsi_dma_buf_pool
,
784 psb
->data
, psb
->dma_handle
);
788 if (last_xritag
!= NO_XRI
789 && psb
->cur_iocbq
.sli4_xritag
!= (last_xritag
+1)) {
790 non_sequential_xri
= 1;
792 list_add_tail(&psb
->list
, &sblist
);
793 last_xritag
= psb
->cur_iocbq
.sli4_xritag
;
795 index
= phba
->sli4_hba
.scsi_xri_cnt
++;
796 psb
->cur_iocbq
.iocb_flag
|= LPFC_IO_FCP
;
798 psb
->fcp_bpl
= psb
->data
;
799 psb
->fcp_cmnd
= (psb
->data
+ phba
->cfg_sg_dma_buf_size
)
800 - (sizeof(struct fcp_cmnd
) + sizeof(struct fcp_rsp
));
801 psb
->fcp_rsp
= (struct fcp_rsp
*)((uint8_t *)psb
->fcp_cmnd
+
802 sizeof(struct fcp_cmnd
));
804 /* Initialize local short-hand pointers. */
805 sgl
= (struct sli4_sge
*)psb
->fcp_bpl
;
806 pdma_phys_bpl
= psb
->dma_handle
;
808 (psb
->dma_handle
+ phba
->cfg_sg_dma_buf_size
)
809 - (sizeof(struct fcp_cmnd
) + sizeof(struct fcp_rsp
));
810 pdma_phys_fcp_rsp
= pdma_phys_fcp_cmd
+ sizeof(struct fcp_cmnd
);
813 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
814 * are sg list bdes. Initialize the first two and leave the
815 * rest for queuecommand.
817 sgl
->addr_hi
= cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd
));
818 sgl
->addr_lo
= cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd
));
819 bf_set(lpfc_sli4_sge_last
, sgl
, 0);
820 sgl
->word2
= cpu_to_le32(sgl
->word2
);
821 sgl
->sge_len
= cpu_to_le32(sizeof(struct fcp_cmnd
));
824 /* Setup the physical region for the FCP RSP */
825 sgl
->addr_hi
= cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp
));
826 sgl
->addr_lo
= cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp
));
827 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
828 sgl
->word2
= cpu_to_le32(sgl
->word2
);
829 sgl
->sge_len
= cpu_to_le32(sizeof(struct fcp_rsp
));
832 * Since the IOCB for the FCP I/O is built into this
833 * lpfc_scsi_buf, initialize it with all known data now.
835 iocb
= &psb
->cur_iocbq
.iocb
;
836 iocb
->un
.fcpi64
.bdl
.ulpIoTag32
= 0;
837 iocb
->un
.fcpi64
.bdl
.bdeFlags
= BUFF_TYPE_BDE_64
;
838 /* setting the BLP size to 2 * sizeof BDE may not be correct.
839 * We are setting the bpl to point to out sgl. An sgl's
840 * entries are 16 bytes, a bpl entries are 12 bytes.
842 iocb
->un
.fcpi64
.bdl
.bdeSize
= sizeof(struct fcp_cmnd
);
843 iocb
->un
.fcpi64
.bdl
.addrLow
= putPaddrLow(pdma_phys_fcp_cmd
);
844 iocb
->un
.fcpi64
.bdl
.addrHigh
= putPaddrHigh(pdma_phys_fcp_cmd
);
845 iocb
->ulpBdeCount
= 1;
847 iocb
->ulpClass
= CLASS3
;
848 if (phba
->cfg_sg_dma_buf_size
> SGL_PAGE_SIZE
)
849 pdma_phys_bpl1
= pdma_phys_bpl
+ SGL_PAGE_SIZE
;
852 psb
->dma_phys_bpl
= pdma_phys_bpl
;
853 phba
->sli4_hba
.lpfc_scsi_psb_array
[index
] = psb
;
854 if (non_sequential_xri
) {
855 status
= lpfc_sli4_post_sgl(phba
, pdma_phys_bpl
,
857 psb
->cur_iocbq
.sli4_xritag
);
859 /* Put this back on the abort scsi list */
864 psb
->status
= IOSTAT_SUCCESS
;
866 /* Put it back into the SCSI buffer list */
867 lpfc_release_scsi_buf_s4(phba
, psb
);
872 status
= lpfc_sli4_post_scsi_sgl_block(phba
, &sblist
, bcnt
);
873 /* Reset SCSI buffer count for next round of posting */
874 while (!list_empty(&sblist
)) {
875 list_remove_head(&sblist
, psb
, struct lpfc_scsi_buf
,
878 /* Put this back on the abort scsi list */
883 psb
->status
= IOSTAT_SUCCESS
;
885 /* Put it back into the SCSI buffer list */
886 lpfc_release_scsi_buf_s4(phba
, psb
);
890 return bcnt
+ non_sequential_xri
- rc
;
894 * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
895 * @vport: The virtual port for which this call being executed.
896 * @num_to_allocate: The requested number of buffers to allocate.
898 * This routine wraps the actual SCSI buffer allocator function pointer from
899 * the lpfc_hba struct.
902 * int - number of scsi buffers that were allocated.
903 * 0 = failure, less than num_to_alloc is a partial failure.
906 lpfc_new_scsi_buf(struct lpfc_vport
*vport
, int num_to_alloc
)
908 return vport
->phba
->lpfc_new_scsi_buf(vport
, num_to_alloc
);
912 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
913 * @phba: The HBA for which this call is being executed.
915 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
916 * and returns to caller.
920 * Pointer to lpfc_scsi_buf - Success
922 static struct lpfc_scsi_buf
*
923 lpfc_get_scsi_buf(struct lpfc_hba
* phba
)
925 struct lpfc_scsi_buf
* lpfc_cmd
= NULL
;
926 struct list_head
*scsi_buf_list
= &phba
->lpfc_scsi_buf_list
;
927 unsigned long iflag
= 0;
929 spin_lock_irqsave(&phba
->scsi_buf_list_lock
, iflag
);
930 list_remove_head(scsi_buf_list
, lpfc_cmd
, struct lpfc_scsi_buf
, list
);
932 lpfc_cmd
->seg_cnt
= 0;
933 lpfc_cmd
->nonsg_phys
= 0;
934 lpfc_cmd
->prot_seg_cnt
= 0;
936 spin_unlock_irqrestore(&phba
->scsi_buf_list_lock
, iflag
);
941 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
942 * @phba: The Hba for which this call is being executed.
943 * @psb: The scsi buffer which is being released.
945 * This routine releases @psb scsi buffer by adding it to tail of @phba
946 * lpfc_scsi_buf_list list.
949 lpfc_release_scsi_buf_s3(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
951 unsigned long iflag
= 0;
953 spin_lock_irqsave(&phba
->scsi_buf_list_lock
, iflag
);
955 list_add_tail(&psb
->list
, &phba
->lpfc_scsi_buf_list
);
956 spin_unlock_irqrestore(&phba
->scsi_buf_list_lock
, iflag
);
960 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
961 * @phba: The Hba for which this call is being executed.
962 * @psb: The scsi buffer which is being released.
964 * This routine releases @psb scsi buffer by adding it to tail of @phba
965 * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer
966 * and cannot be reused for at least RA_TOV amount of time if it was
970 lpfc_release_scsi_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
972 unsigned long iflag
= 0;
974 if (psb
->exch_busy
) {
975 spin_lock_irqsave(&phba
->sli4_hba
.abts_scsi_buf_list_lock
,
978 list_add_tail(&psb
->list
,
979 &phba
->sli4_hba
.lpfc_abts_scsi_buf_list
);
980 spin_unlock_irqrestore(&phba
->sli4_hba
.abts_scsi_buf_list_lock
,
984 spin_lock_irqsave(&phba
->scsi_buf_list_lock
, iflag
);
986 list_add_tail(&psb
->list
, &phba
->lpfc_scsi_buf_list
);
987 spin_unlock_irqrestore(&phba
->scsi_buf_list_lock
, iflag
);
992 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
993 * @phba: The Hba for which this call is being executed.
994 * @psb: The scsi buffer which is being released.
996 * This routine releases @psb scsi buffer by adding it to tail of @phba
997 * lpfc_scsi_buf_list list.
1000 lpfc_release_scsi_buf(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
1003 phba
->lpfc_release_scsi_buf(phba
, psb
);
1007 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
1008 * @phba: The Hba for which this call is being executed.
1009 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1011 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
1012 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
1013 * through sg elements and format the bdea. This routine also initializes all
1014 * IOCB fields which are dependent on scsi command request buffer.
1021 lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
1023 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
1024 struct scatterlist
*sgel
= NULL
;
1025 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
1026 struct ulp_bde64
*bpl
= lpfc_cmd
->fcp_bpl
;
1027 struct lpfc_iocbq
*iocbq
= &lpfc_cmd
->cur_iocbq
;
1028 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
1029 struct ulp_bde64
*data_bde
= iocb_cmd
->unsli3
.fcp_ext
.dbde
;
1030 dma_addr_t physaddr
;
1031 uint32_t num_bde
= 0;
1032 int nseg
, datadir
= scsi_cmnd
->sc_data_direction
;
1035 * There are three possibilities here - use scatter-gather segment, use
1036 * the single mapping, or neither. Start the lpfc command prep by
1037 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1041 if (scsi_sg_count(scsi_cmnd
)) {
1043 * The driver stores the segment count returned from pci_map_sg
1044 * because this a count of dma-mappings used to map the use_sg
1045 * pages. They are not guaranteed to be the same for those
1046 * architectures that implement an IOMMU.
1049 nseg
= dma_map_sg(&phba
->pcidev
->dev
, scsi_sglist(scsi_cmnd
),
1050 scsi_sg_count(scsi_cmnd
), datadir
);
1051 if (unlikely(!nseg
))
1054 lpfc_cmd
->seg_cnt
= nseg
;
1055 if (lpfc_cmd
->seg_cnt
> phba
->cfg_sg_seg_cnt
) {
1056 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1057 "9064 BLKGRD: %s: Too many sg segments from "
1058 "dma_map_sg. Config %d, seg_cnt %d\n",
1059 __func__
, phba
->cfg_sg_seg_cnt
,
1061 scsi_dma_unmap(scsi_cmnd
);
1066 * The driver established a maximum scatter-gather segment count
1067 * during probe that limits the number of sg elements in any
1068 * single scsi command. Just run through the seg_cnt and format
1070 * When using SLI-3 the driver will try to fit all the BDEs into
1071 * the IOCB. If it can't then the BDEs get added to a BPL as it
1072 * does for SLI-2 mode.
1074 scsi_for_each_sg(scsi_cmnd
, sgel
, nseg
, num_bde
) {
1075 physaddr
= sg_dma_address(sgel
);
1076 if (phba
->sli_rev
== 3 &&
1077 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
) &&
1078 !(iocbq
->iocb_flag
& DSS_SECURITY_OP
) &&
1079 nseg
<= LPFC_EXT_DATA_BDE_COUNT
) {
1080 data_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1081 data_bde
->tus
.f
.bdeSize
= sg_dma_len(sgel
);
1082 data_bde
->addrLow
= putPaddrLow(physaddr
);
1083 data_bde
->addrHigh
= putPaddrHigh(physaddr
);
1086 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1087 bpl
->tus
.f
.bdeSize
= sg_dma_len(sgel
);
1088 bpl
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1090 le32_to_cpu(putPaddrLow(physaddr
));
1092 le32_to_cpu(putPaddrHigh(physaddr
));
1099 * Finish initializing those IOCB fields that are dependent on the
1100 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1101 * explicitly reinitialized and for SLI-3 the extended bde count is
1102 * explicitly reinitialized since all iocb memory resources are reused.
1104 if (phba
->sli_rev
== 3 &&
1105 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
) &&
1106 !(iocbq
->iocb_flag
& DSS_SECURITY_OP
)) {
1107 if (num_bde
> LPFC_EXT_DATA_BDE_COUNT
) {
1109 * The extended IOCB format can only fit 3 BDE or a BPL.
1110 * This I/O has more than 3 BDE so the 1st data bde will
1111 * be a BPL that is filled in here.
1113 physaddr
= lpfc_cmd
->dma_handle
;
1114 data_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BLP_64
;
1115 data_bde
->tus
.f
.bdeSize
= (num_bde
*
1116 sizeof(struct ulp_bde64
));
1117 physaddr
+= (sizeof(struct fcp_cmnd
) +
1118 sizeof(struct fcp_rsp
) +
1119 (2 * sizeof(struct ulp_bde64
)));
1120 data_bde
->addrHigh
= putPaddrHigh(physaddr
);
1121 data_bde
->addrLow
= putPaddrLow(physaddr
);
1122 /* ebde count includes the responce bde and data bpl */
1123 iocb_cmd
->unsli3
.fcp_ext
.ebde_count
= 2;
1125 /* ebde count includes the responce bde and data bdes */
1126 iocb_cmd
->unsli3
.fcp_ext
.ebde_count
= (num_bde
+ 1);
1129 iocb_cmd
->un
.fcpi64
.bdl
.bdeSize
=
1130 ((num_bde
+ 2) * sizeof(struct ulp_bde64
));
1131 iocb_cmd
->unsli3
.fcp_ext
.ebde_count
= (num_bde
+ 1);
1133 fcp_cmnd
->fcpDl
= cpu_to_be32(scsi_bufflen(scsi_cmnd
));
1136 * Due to difference in data length between DIF/non-DIF paths,
1137 * we need to set word 4 of IOCB here
1139 iocb_cmd
->un
.fcpi
.fcpi_parm
= scsi_bufflen(scsi_cmnd
);
1144 * Given a scsi cmnd, determine the BlockGuard profile to be used
1148 lpfc_sc_to_sli_prof(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
)
1150 uint8_t guard_type
= scsi_host_get_guard(sc
->device
->host
);
1151 uint8_t ret_prof
= LPFC_PROF_INVALID
;
1153 if (guard_type
== SHOST_DIX_GUARD_IP
) {
1154 switch (scsi_get_prot_op(sc
)) {
1155 case SCSI_PROT_READ_INSERT
:
1156 case SCSI_PROT_WRITE_STRIP
:
1157 ret_prof
= LPFC_PROF_AST2
;
1160 case SCSI_PROT_READ_STRIP
:
1161 case SCSI_PROT_WRITE_INSERT
:
1162 ret_prof
= LPFC_PROF_A1
;
1165 case SCSI_PROT_READ_PASS
:
1166 case SCSI_PROT_WRITE_PASS
:
1167 ret_prof
= LPFC_PROF_AST1
;
1170 case SCSI_PROT_NORMAL
:
1172 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1173 "9063 BLKGRD:Bad op/guard:%d/%d combination\n",
1174 scsi_get_prot_op(sc
), guard_type
);
1178 } else if (guard_type
== SHOST_DIX_GUARD_CRC
) {
1179 switch (scsi_get_prot_op(sc
)) {
1180 case SCSI_PROT_READ_STRIP
:
1181 case SCSI_PROT_WRITE_INSERT
:
1182 ret_prof
= LPFC_PROF_A1
;
1185 case SCSI_PROT_READ_PASS
:
1186 case SCSI_PROT_WRITE_PASS
:
1187 ret_prof
= LPFC_PROF_C1
;
1190 case SCSI_PROT_READ_INSERT
:
1191 case SCSI_PROT_WRITE_STRIP
:
1192 case SCSI_PROT_NORMAL
:
1194 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1195 "9075 BLKGRD: Bad op/guard:%d/%d combination\n",
1196 scsi_get_prot_op(sc
), guard_type
);
1200 /* unsupported format */
1207 struct scsi_dif_tuple
{
1208 __be16 guard_tag
; /* Checksum */
1209 __be16 app_tag
; /* Opaque storage */
1210 __be32 ref_tag
; /* Target LBA or indirect LBA */
1213 static inline unsigned
1214 lpfc_cmd_blksize(struct scsi_cmnd
*sc
)
1216 return sc
->device
->sector_size
;
1220 * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command
1221 * @sc: in: SCSI command
1222 * @apptagmask: out: app tag mask
1223 * @apptagval: out: app tag value
1224 * @reftag: out: ref tag (reference tag)
1227 * Extract DIF parameters from the command if possible. Otherwise,
1228 * use default parameters.
1232 lpfc_get_cmd_dif_parms(struct scsi_cmnd
*sc
, uint16_t *apptagmask
,
1233 uint16_t *apptagval
, uint32_t *reftag
)
1235 struct scsi_dif_tuple
*spt
;
1236 unsigned char op
= scsi_get_prot_op(sc
);
1237 unsigned int protcnt
= scsi_prot_sg_count(sc
);
1240 if (protcnt
&& (op
== SCSI_PROT_WRITE_STRIP
||
1241 op
== SCSI_PROT_WRITE_PASS
)) {
1244 spt
= page_address(sg_page(scsi_prot_sglist(sc
))) +
1245 scsi_prot_sglist(sc
)[0].offset
;
1248 *reftag
= cpu_to_be32(spt
->ref_tag
);
1251 /* SBC defines ref tag to be lower 32bits of LBA */
1252 *reftag
= (uint32_t) (0xffffffff & scsi_get_lba(sc
));
1259 * This function sets up buffer list for protection groups of
1260 * type LPFC_PG_TYPE_NO_DIF
1262 * This is usually used when the HBA is instructed to generate
1263 * DIFs and insert them into data stream (or strip DIF from
1264 * incoming data stream)
1266 * The buffer list consists of just one protection group described
1268 * +-------------------------+
1269 * start of prot group --> | PDE_1 |
1270 * +-------------------------+
1272 * +-------------------------+
1273 * |more Data BDE's ... (opt)|
1274 * +-------------------------+
1276 * @sc: pointer to scsi command we're working on
1277 * @bpl: pointer to buffer list for protection groups
1278 * @datacnt: number of segments of data that have been dma mapped
1280 * Note: Data s/g buffers have been dma mapped
1283 lpfc_bg_setup_bpl(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
,
1284 struct ulp_bde64
*bpl
, int datasegcnt
)
1286 struct scatterlist
*sgde
= NULL
; /* s/g data entry */
1287 struct lpfc_pde
*pde1
= NULL
;
1288 dma_addr_t physaddr
;
1289 int i
= 0, num_bde
= 0;
1290 int datadir
= sc
->sc_data_direction
;
1291 int prof
= LPFC_PROF_INVALID
;
1294 uint16_t apptagmask
, apptagval
;
1296 pde1
= (struct lpfc_pde
*) bpl
;
1297 prof
= lpfc_sc_to_sli_prof(phba
, sc
);
1299 if (prof
== LPFC_PROF_INVALID
)
1302 /* extract some info from the scsi command for PDE1*/
1303 blksize
= lpfc_cmd_blksize(sc
);
1304 lpfc_get_cmd_dif_parms(sc
, &apptagmask
, &apptagval
, &reftag
);
1306 /* setup PDE1 with what we have */
1307 lpfc_pde_set_bg_parms(pde1
, LPFC_PDE1_DESCRIPTOR
, prof
, blksize
,
1309 lpfc_pde_set_dif_parms(pde1
, apptagmask
, apptagval
, reftag
);
1314 /* assumption: caller has already run dma_map_sg on command data */
1315 scsi_for_each_sg(sc
, sgde
, datasegcnt
, i
) {
1316 physaddr
= sg_dma_address(sgde
);
1317 bpl
->addrLow
= le32_to_cpu(putPaddrLow(physaddr
));
1318 bpl
->addrHigh
= le32_to_cpu(putPaddrHigh(physaddr
));
1319 bpl
->tus
.f
.bdeSize
= sg_dma_len(sgde
);
1320 if (datadir
== DMA_TO_DEVICE
)
1321 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1323 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64I
;
1324 bpl
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1334 * This function sets up buffer list for protection groups of
1335 * type LPFC_PG_TYPE_DIF_BUF
1337 * This is usually used when DIFs are in their own buffers,
1338 * separate from the data. The HBA can then by instructed
1339 * to place the DIFs in the outgoing stream. For read operations,
1340 * The HBA could extract the DIFs and place it in DIF buffers.
1342 * The buffer list for this type consists of one or more of the
1343 * protection groups described below:
1344 * +-------------------------+
1345 * start of first prot group --> | PDE_1 |
1346 * +-------------------------+
1347 * | PDE_3 (Prot BDE) |
1348 * +-------------------------+
1350 * +-------------------------+
1351 * |more Data BDE's ... (opt)|
1352 * +-------------------------+
1353 * start of new prot group --> | PDE_1 |
1354 * +-------------------------+
1356 * +-------------------------+
1358 * @sc: pointer to scsi command we're working on
1359 * @bpl: pointer to buffer list for protection groups
1360 * @datacnt: number of segments of data that have been dma mapped
1361 * @protcnt: number of segment of protection data that have been dma mapped
1363 * Note: It is assumed that both data and protection s/g buffers have been
1367 lpfc_bg_setup_bpl_prot(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
,
1368 struct ulp_bde64
*bpl
, int datacnt
, int protcnt
)
1370 struct scatterlist
*sgde
= NULL
; /* s/g data entry */
1371 struct scatterlist
*sgpe
= NULL
; /* s/g prot entry */
1372 struct lpfc_pde
*pde1
= NULL
;
1373 struct ulp_bde64
*prot_bde
= NULL
;
1374 dma_addr_t dataphysaddr
, protphysaddr
;
1375 unsigned short curr_data
= 0, curr_prot
= 0;
1376 unsigned int split_offset
, protgroup_len
;
1377 unsigned int protgrp_blks
, protgrp_bytes
;
1378 unsigned int remainder
, subtotal
;
1379 int prof
= LPFC_PROF_INVALID
;
1380 int datadir
= sc
->sc_data_direction
;
1381 unsigned char pgdone
= 0, alldone
= 0;
1384 uint16_t apptagmask
, apptagval
;
1387 sgpe
= scsi_prot_sglist(sc
);
1388 sgde
= scsi_sglist(sc
);
1390 if (!sgpe
|| !sgde
) {
1391 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1392 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
1397 prof
= lpfc_sc_to_sli_prof(phba
, sc
);
1398 if (prof
== LPFC_PROF_INVALID
)
1401 /* extract some info from the scsi command for PDE1*/
1402 blksize
= lpfc_cmd_blksize(sc
);
1403 lpfc_get_cmd_dif_parms(sc
, &apptagmask
, &apptagval
, &reftag
);
1407 /* setup the first PDE_1 */
1408 pde1
= (struct lpfc_pde
*) bpl
;
1410 lpfc_pde_set_bg_parms(pde1
, LPFC_PDE1_DESCRIPTOR
, prof
, blksize
,
1412 lpfc_pde_set_dif_parms(pde1
, apptagmask
, apptagval
, reftag
);
1417 /* setup the first BDE that points to protection buffer */
1418 prot_bde
= (struct ulp_bde64
*) bpl
;
1419 protphysaddr
= sg_dma_address(sgpe
);
1420 prot_bde
->addrLow
= le32_to_cpu(putPaddrLow(protphysaddr
));
1421 prot_bde
->addrHigh
= le32_to_cpu(putPaddrHigh(protphysaddr
));
1422 protgroup_len
= sg_dma_len(sgpe
);
1425 /* must be integer multiple of the DIF block length */
1426 BUG_ON(protgroup_len
% 8);
1428 protgrp_blks
= protgroup_len
/ 8;
1429 protgrp_bytes
= protgrp_blks
* blksize
;
1431 prot_bde
->tus
.f
.bdeSize
= protgroup_len
;
1432 if (datadir
== DMA_TO_DEVICE
)
1433 prot_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1435 prot_bde
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64I
;
1436 prot_bde
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1441 /* setup BDE's for data blocks associated with DIF data */
1443 subtotal
= 0; /* total bytes processed for current prot grp */
1446 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1447 "9065 BLKGRD:%s Invalid data segment\n",
1452 dataphysaddr
= sg_dma_address(sgde
) + split_offset
;
1453 bpl
->addrLow
= le32_to_cpu(putPaddrLow(dataphysaddr
));
1454 bpl
->addrHigh
= le32_to_cpu(putPaddrHigh(dataphysaddr
));
1456 remainder
= sg_dma_len(sgde
) - split_offset
;
1458 if ((subtotal
+ remainder
) <= protgrp_bytes
) {
1459 /* we can use this whole buffer */
1460 bpl
->tus
.f
.bdeSize
= remainder
;
1463 if ((subtotal
+ remainder
) == protgrp_bytes
)
1466 /* must split this buffer with next prot grp */
1467 bpl
->tus
.f
.bdeSize
= protgrp_bytes
- subtotal
;
1468 split_offset
+= bpl
->tus
.f
.bdeSize
;
1471 subtotal
+= bpl
->tus
.f
.bdeSize
;
1473 if (datadir
== DMA_TO_DEVICE
)
1474 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64
;
1476 bpl
->tus
.f
.bdeFlags
= BUFF_TYPE_BDE_64I
;
1477 bpl
->tus
.w
= le32_to_cpu(bpl
->tus
.w
);
1485 /* Move to the next s/g segment if possible */
1486 sgde
= sg_next(sgde
);
1490 if (curr_prot
== protcnt
) {
1492 } else if (curr_prot
< protcnt
) {
1493 /* advance to next prot buffer */
1494 sgpe
= sg_next(sgpe
);
1497 /* update the reference tag */
1498 reftag
+= protgrp_blks
;
1500 /* if we're here, we have a bug */
1501 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1502 "9054 BLKGRD: bug in %s\n", __func__
);
1513 * Given a SCSI command that supports DIF, determine composition of protection
1514 * groups involved in setting up buffer lists
1517 * for DIF (for both read and write)
1520 lpfc_prot_group_type(struct lpfc_hba
*phba
, struct scsi_cmnd
*sc
)
1522 int ret
= LPFC_PG_TYPE_INVALID
;
1523 unsigned char op
= scsi_get_prot_op(sc
);
1526 case SCSI_PROT_READ_STRIP
:
1527 case SCSI_PROT_WRITE_INSERT
:
1528 ret
= LPFC_PG_TYPE_NO_DIF
;
1530 case SCSI_PROT_READ_INSERT
:
1531 case SCSI_PROT_WRITE_STRIP
:
1532 case SCSI_PROT_READ_PASS
:
1533 case SCSI_PROT_WRITE_PASS
:
1534 ret
= LPFC_PG_TYPE_DIF_BUF
;
1537 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1538 "9021 Unsupported protection op:%d\n", op
);
1546 * This is the protection/DIF aware version of
1547 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
1548 * two functions eventually, but for now, it's here
1551 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba
*phba
,
1552 struct lpfc_scsi_buf
*lpfc_cmd
)
1554 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
1555 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
1556 struct ulp_bde64
*bpl
= lpfc_cmd
->fcp_bpl
;
1557 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
1558 uint32_t num_bde
= 0;
1559 int datasegcnt
, protsegcnt
, datadir
= scsi_cmnd
->sc_data_direction
;
1560 int prot_group_type
= 0;
1565 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
1566 * fcp_rsp regions to the first data bde entry
1569 if (scsi_sg_count(scsi_cmnd
)) {
1571 * The driver stores the segment count returned from pci_map_sg
1572 * because this a count of dma-mappings used to map the use_sg
1573 * pages. They are not guaranteed to be the same for those
1574 * architectures that implement an IOMMU.
1576 datasegcnt
= dma_map_sg(&phba
->pcidev
->dev
,
1577 scsi_sglist(scsi_cmnd
),
1578 scsi_sg_count(scsi_cmnd
), datadir
);
1579 if (unlikely(!datasegcnt
))
1582 lpfc_cmd
->seg_cnt
= datasegcnt
;
1583 if (lpfc_cmd
->seg_cnt
> phba
->cfg_sg_seg_cnt
) {
1584 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1585 "9067 BLKGRD: %s: Too many sg segments"
1586 " from dma_map_sg. Config %d, seg_cnt"
1588 __func__
, phba
->cfg_sg_seg_cnt
,
1590 scsi_dma_unmap(scsi_cmnd
);
1594 prot_group_type
= lpfc_prot_group_type(phba
, scsi_cmnd
);
1596 switch (prot_group_type
) {
1597 case LPFC_PG_TYPE_NO_DIF
:
1598 num_bde
= lpfc_bg_setup_bpl(phba
, scsi_cmnd
, bpl
,
1600 /* we should have 2 or more entries in buffer list */
1604 case LPFC_PG_TYPE_DIF_BUF
:{
1606 * This type indicates that protection buffers are
1607 * passed to the driver, so that needs to be prepared
1610 protsegcnt
= dma_map_sg(&phba
->pcidev
->dev
,
1611 scsi_prot_sglist(scsi_cmnd
),
1612 scsi_prot_sg_count(scsi_cmnd
), datadir
);
1613 if (unlikely(!protsegcnt
)) {
1614 scsi_dma_unmap(scsi_cmnd
);
1618 lpfc_cmd
->prot_seg_cnt
= protsegcnt
;
1619 if (lpfc_cmd
->prot_seg_cnt
1620 > phba
->cfg_prot_sg_seg_cnt
) {
1621 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1622 "9068 BLKGRD: %s: Too many prot sg "
1623 "segments from dma_map_sg. Config %d,"
1624 "prot_seg_cnt %d\n", __func__
,
1625 phba
->cfg_prot_sg_seg_cnt
,
1626 lpfc_cmd
->prot_seg_cnt
);
1627 dma_unmap_sg(&phba
->pcidev
->dev
,
1628 scsi_prot_sglist(scsi_cmnd
),
1629 scsi_prot_sg_count(scsi_cmnd
),
1631 scsi_dma_unmap(scsi_cmnd
);
1635 num_bde
= lpfc_bg_setup_bpl_prot(phba
, scsi_cmnd
, bpl
,
1636 datasegcnt
, protsegcnt
);
1637 /* we should have 3 or more entries in buffer list */
1642 case LPFC_PG_TYPE_INVALID
:
1644 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1645 "9022 Unexpected protection group %i\n",
1652 * Finish initializing those IOCB fields that are dependent on the
1653 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
1654 * reinitialized since all iocb memory resources are used many times
1655 * for transmit, receive, and continuation bpl's.
1657 iocb_cmd
->un
.fcpi64
.bdl
.bdeSize
= (2 * sizeof(struct ulp_bde64
));
1658 iocb_cmd
->un
.fcpi64
.bdl
.bdeSize
+= (num_bde
* sizeof(struct ulp_bde64
));
1659 iocb_cmd
->ulpBdeCount
= 1;
1660 iocb_cmd
->ulpLe
= 1;
1662 fcpdl
= scsi_bufflen(scsi_cmnd
);
1664 if (scsi_get_prot_type(scsi_cmnd
) == SCSI_PROT_DIF_TYPE1
) {
1666 * We are in DIF Type 1 mode
1667 * Every data block has a 8 byte DIF (trailer)
1668 * attached to it. Must ajust FCP data length
1670 blksize
= lpfc_cmd_blksize(scsi_cmnd
);
1671 diflen
= (fcpdl
/ blksize
) * 8;
1674 fcp_cmnd
->fcpDl
= be32_to_cpu(fcpdl
);
1677 * Due to difference in data length between DIF/non-DIF paths,
1678 * we need to set word 4 of IOCB here
1680 iocb_cmd
->un
.fcpi
.fcpi_parm
= fcpdl
;
1684 lpfc_printf_log(phba
, KERN_ERR
, LOG_FCP
,
1685 "9023 Could not setup all needed BDE's"
1686 "prot_group_type=%d, num_bde=%d\n",
1687 prot_group_type
, num_bde
);
1692 * This function checks for BlockGuard errors detected by
1693 * the HBA. In case of errors, the ASC/ASCQ fields in the
1694 * sense buffer will be set accordingly, paired with
1695 * ILLEGAL_REQUEST to signal to the kernel that the HBA
1696 * detected corruption.
1699 * 0 - No error found
1700 * 1 - BlockGuard error found
1701 * -1 - Internal error (bad profile, ...etc)
1704 lpfc_parse_bg_err(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
,
1705 struct lpfc_iocbq
*pIocbOut
)
1707 struct scsi_cmnd
*cmd
= lpfc_cmd
->pCmd
;
1708 struct sli3_bg_fields
*bgf
= &pIocbOut
->iocb
.unsli3
.sli3_bg
;
1710 uint32_t bghm
= bgf
->bghm
;
1711 uint32_t bgstat
= bgf
->bgstat
;
1712 uint64_t failing_sector
= 0;
1714 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
, "9069 BLKGRD: BG ERROR in cmd"
1715 " 0x%x lba 0x%llx blk cnt 0x%x "
1716 "bgstat=0x%x bghm=0x%x\n",
1717 cmd
->cmnd
[0], (unsigned long long)scsi_get_lba(cmd
),
1718 blk_rq_sectors(cmd
->request
), bgstat
, bghm
);
1720 spin_lock(&_dump_buf_lock
);
1721 if (!_dump_buf_done
) {
1722 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
, "9070 BLKGRD: Saving"
1723 " Data for %u blocks to debugfs\n",
1724 (cmd
->cmnd
[7] << 8 | cmd
->cmnd
[8]));
1725 lpfc_debug_save_data(phba
, cmd
);
1727 /* If we have a prot sgl, save the DIF buffer */
1728 if (lpfc_prot_group_type(phba
, cmd
) ==
1729 LPFC_PG_TYPE_DIF_BUF
) {
1730 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
, "9071 BLKGRD: "
1731 "Saving DIF for %u blocks to debugfs\n",
1732 (cmd
->cmnd
[7] << 8 | cmd
->cmnd
[8]));
1733 lpfc_debug_save_dif(phba
, cmd
);
1738 spin_unlock(&_dump_buf_lock
);
1740 if (lpfc_bgs_get_invalid_prof(bgstat
)) {
1741 cmd
->result
= ScsiResult(DID_ERROR
, 0);
1742 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
, "9072 BLKGRD: Invalid"
1743 " BlockGuard profile. bgstat:0x%x\n",
1749 if (lpfc_bgs_get_uninit_dif_block(bgstat
)) {
1750 cmd
->result
= ScsiResult(DID_ERROR
, 0);
1751 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
, "9073 BLKGRD: "
1752 "Invalid BlockGuard DIF Block. bgstat:0x%x\n",
1758 if (lpfc_bgs_get_guard_err(bgstat
)) {
1761 scsi_build_sense_buffer(1, cmd
->sense_buffer
, ILLEGAL_REQUEST
,
1763 cmd
->result
= DRIVER_SENSE
<< 24
1764 | ScsiResult(DID_ABORT
, SAM_STAT_CHECK_CONDITION
);
1765 phba
->bg_guard_err_cnt
++;
1766 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1767 "9055 BLKGRD: guard_tag error\n");
1770 if (lpfc_bgs_get_reftag_err(bgstat
)) {
1773 scsi_build_sense_buffer(1, cmd
->sense_buffer
, ILLEGAL_REQUEST
,
1775 cmd
->result
= DRIVER_SENSE
<< 24
1776 | ScsiResult(DID_ABORT
, SAM_STAT_CHECK_CONDITION
);
1778 phba
->bg_reftag_err_cnt
++;
1779 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1780 "9056 BLKGRD: ref_tag error\n");
1783 if (lpfc_bgs_get_apptag_err(bgstat
)) {
1786 scsi_build_sense_buffer(1, cmd
->sense_buffer
, ILLEGAL_REQUEST
,
1788 cmd
->result
= DRIVER_SENSE
<< 24
1789 | ScsiResult(DID_ABORT
, SAM_STAT_CHECK_CONDITION
);
1791 phba
->bg_apptag_err_cnt
++;
1792 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1793 "9061 BLKGRD: app_tag error\n");
1796 if (lpfc_bgs_get_hi_water_mark_present(bgstat
)) {
1798 * setup sense data descriptor 0 per SPC-4 as an information
1799 * field, and put the failing LBA in it
1801 cmd
->sense_buffer
[8] = 0; /* Information */
1802 cmd
->sense_buffer
[9] = 0xa; /* Add. length */
1803 bghm
/= cmd
->device
->sector_size
;
1805 failing_sector
= scsi_get_lba(cmd
);
1806 failing_sector
+= bghm
;
1808 put_unaligned_be64(failing_sector
, &cmd
->sense_buffer
[10]);
1812 /* No error was reported - problem in FW? */
1813 cmd
->result
= ScsiResult(DID_ERROR
, 0);
1814 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
1815 "9057 BLKGRD: no errors reported!\n");
1823 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
1824 * @phba: The Hba for which this call is being executed.
1825 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1827 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
1828 * field of @lpfc_cmd for device with SLI-4 interface spec.
1835 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
1837 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
1838 struct scatterlist
*sgel
= NULL
;
1839 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
1840 struct sli4_sge
*sgl
= (struct sli4_sge
*)lpfc_cmd
->fcp_bpl
;
1841 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
1842 dma_addr_t physaddr
;
1843 uint32_t num_bde
= 0;
1845 uint32_t dma_offset
= 0;
1849 * There are three possibilities here - use scatter-gather segment, use
1850 * the single mapping, or neither. Start the lpfc command prep by
1851 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1854 if (scsi_sg_count(scsi_cmnd
)) {
1856 * The driver stores the segment count returned from pci_map_sg
1857 * because this a count of dma-mappings used to map the use_sg
1858 * pages. They are not guaranteed to be the same for those
1859 * architectures that implement an IOMMU.
1862 nseg
= scsi_dma_map(scsi_cmnd
);
1863 if (unlikely(!nseg
))
1866 /* clear the last flag in the fcp_rsp map entry */
1867 sgl
->word2
= le32_to_cpu(sgl
->word2
);
1868 bf_set(lpfc_sli4_sge_last
, sgl
, 0);
1869 sgl
->word2
= cpu_to_le32(sgl
->word2
);
1872 lpfc_cmd
->seg_cnt
= nseg
;
1873 if (lpfc_cmd
->seg_cnt
> phba
->cfg_sg_seg_cnt
) {
1874 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
, "9074 BLKGRD:"
1875 " %s: Too many sg segments from "
1876 "dma_map_sg. Config %d, seg_cnt %d\n",
1877 __func__
, phba
->cfg_sg_seg_cnt
,
1879 scsi_dma_unmap(scsi_cmnd
);
1884 * The driver established a maximum scatter-gather segment count
1885 * during probe that limits the number of sg elements in any
1886 * single scsi command. Just run through the seg_cnt and format
1888 * When using SLI-3 the driver will try to fit all the BDEs into
1889 * the IOCB. If it can't then the BDEs get added to a BPL as it
1890 * does for SLI-2 mode.
1892 scsi_for_each_sg(scsi_cmnd
, sgel
, nseg
, num_bde
) {
1893 physaddr
= sg_dma_address(sgel
);
1894 dma_len
= sg_dma_len(sgel
);
1895 sgl
->addr_lo
= cpu_to_le32(putPaddrLow(physaddr
));
1896 sgl
->addr_hi
= cpu_to_le32(putPaddrHigh(physaddr
));
1897 if ((num_bde
+ 1) == nseg
)
1898 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
1900 bf_set(lpfc_sli4_sge_last
, sgl
, 0);
1901 bf_set(lpfc_sli4_sge_offset
, sgl
, dma_offset
);
1902 sgl
->word2
= cpu_to_le32(sgl
->word2
);
1903 sgl
->sge_len
= cpu_to_le32(dma_len
);
1904 dma_offset
+= dma_len
;
1909 /* clear the last flag in the fcp_rsp map entry */
1910 sgl
->word2
= le32_to_cpu(sgl
->word2
);
1911 bf_set(lpfc_sli4_sge_last
, sgl
, 1);
1912 sgl
->word2
= cpu_to_le32(sgl
->word2
);
1916 * Finish initializing those IOCB fields that are dependent on the
1917 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1918 * explicitly reinitialized.
1919 * all iocb memory resources are reused.
1921 fcp_cmnd
->fcpDl
= cpu_to_be32(scsi_bufflen(scsi_cmnd
));
1924 * Due to difference in data length between DIF/non-DIF paths,
1925 * we need to set word 4 of IOCB here
1927 iocb_cmd
->un
.fcpi
.fcpi_parm
= scsi_bufflen(scsi_cmnd
);
1932 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
1933 * @phba: The Hba for which this call is being executed.
1934 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1936 * This routine wraps the actual DMA mapping function pointer from the
1944 lpfc_scsi_prep_dma_buf(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*lpfc_cmd
)
1946 return phba
->lpfc_scsi_prep_dma_buf(phba
, lpfc_cmd
);
1950 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
1951 * @phba: Pointer to hba context object.
1952 * @vport: Pointer to vport object.
1953 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
1954 * @rsp_iocb: Pointer to response iocb object which reported error.
1956 * This function posts an event when there is a SCSI command reporting
1957 * error from the scsi device.
1960 lpfc_send_scsi_error_event(struct lpfc_hba
*phba
, struct lpfc_vport
*vport
,
1961 struct lpfc_scsi_buf
*lpfc_cmd
, struct lpfc_iocbq
*rsp_iocb
) {
1962 struct scsi_cmnd
*cmnd
= lpfc_cmd
->pCmd
;
1963 struct fcp_rsp
*fcprsp
= lpfc_cmd
->fcp_rsp
;
1964 uint32_t resp_info
= fcprsp
->rspStatus2
;
1965 uint32_t scsi_status
= fcprsp
->rspStatus3
;
1966 uint32_t fcpi_parm
= rsp_iocb
->iocb
.un
.fcpi
.fcpi_parm
;
1967 struct lpfc_fast_path_event
*fast_path_evt
= NULL
;
1968 struct lpfc_nodelist
*pnode
= lpfc_cmd
->rdata
->pnode
;
1969 unsigned long flags
;
1971 /* If there is queuefull or busy condition send a scsi event */
1972 if ((cmnd
->result
== SAM_STAT_TASK_SET_FULL
) ||
1973 (cmnd
->result
== SAM_STAT_BUSY
)) {
1974 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
1977 fast_path_evt
->un
.scsi_evt
.event_type
=
1979 fast_path_evt
->un
.scsi_evt
.subcategory
=
1980 (cmnd
->result
== SAM_STAT_TASK_SET_FULL
) ?
1981 LPFC_EVENT_QFULL
: LPFC_EVENT_DEVBSY
;
1982 fast_path_evt
->un
.scsi_evt
.lun
= cmnd
->device
->lun
;
1983 memcpy(&fast_path_evt
->un
.scsi_evt
.wwpn
,
1984 &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
1985 memcpy(&fast_path_evt
->un
.scsi_evt
.wwnn
,
1986 &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
1987 } else if ((resp_info
& SNS_LEN_VALID
) && fcprsp
->rspSnsLen
&&
1988 ((cmnd
->cmnd
[0] == READ_10
) || (cmnd
->cmnd
[0] == WRITE_10
))) {
1989 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
1992 fast_path_evt
->un
.check_cond_evt
.scsi_event
.event_type
=
1994 fast_path_evt
->un
.check_cond_evt
.scsi_event
.subcategory
=
1995 LPFC_EVENT_CHECK_COND
;
1996 fast_path_evt
->un
.check_cond_evt
.scsi_event
.lun
=
1998 memcpy(&fast_path_evt
->un
.check_cond_evt
.scsi_event
.wwpn
,
1999 &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
2000 memcpy(&fast_path_evt
->un
.check_cond_evt
.scsi_event
.wwnn
,
2001 &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
2002 fast_path_evt
->un
.check_cond_evt
.sense_key
=
2003 cmnd
->sense_buffer
[2] & 0xf;
2004 fast_path_evt
->un
.check_cond_evt
.asc
= cmnd
->sense_buffer
[12];
2005 fast_path_evt
->un
.check_cond_evt
.ascq
= cmnd
->sense_buffer
[13];
2006 } else if ((cmnd
->sc_data_direction
== DMA_FROM_DEVICE
) &&
2008 ((be32_to_cpu(fcprsp
->rspResId
) != fcpi_parm
) ||
2009 ((scsi_status
== SAM_STAT_GOOD
) &&
2010 !(resp_info
& (RESID_UNDER
| RESID_OVER
))))) {
2012 * If status is good or resid does not match with fcp_param and
2013 * there is valid fcpi_parm, then there is a read_check error
2015 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
2018 fast_path_evt
->un
.read_check_error
.header
.event_type
=
2019 FC_REG_FABRIC_EVENT
;
2020 fast_path_evt
->un
.read_check_error
.header
.subcategory
=
2021 LPFC_EVENT_FCPRDCHKERR
;
2022 memcpy(&fast_path_evt
->un
.read_check_error
.header
.wwpn
,
2023 &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
2024 memcpy(&fast_path_evt
->un
.read_check_error
.header
.wwnn
,
2025 &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
2026 fast_path_evt
->un
.read_check_error
.lun
= cmnd
->device
->lun
;
2027 fast_path_evt
->un
.read_check_error
.opcode
= cmnd
->cmnd
[0];
2028 fast_path_evt
->un
.read_check_error
.fcpiparam
=
2033 fast_path_evt
->vport
= vport
;
2034 spin_lock_irqsave(&phba
->hbalock
, flags
);
2035 list_add_tail(&fast_path_evt
->work_evt
.evt_listp
, &phba
->work_list
);
2036 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
2037 lpfc_worker_wake_up(phba
);
2042 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
2043 * @phba: The HBA for which this call is being executed.
2044 * @psb: The scsi buffer which is going to be un-mapped.
2046 * This routine does DMA un-mapping of scatter gather list of scsi command
2047 * field of @lpfc_cmd for device with SLI-3 interface spec.
2050 lpfc_scsi_unprep_dma_buf(struct lpfc_hba
*phba
, struct lpfc_scsi_buf
*psb
)
2053 * There are only two special cases to consider. (1) the scsi command
2054 * requested scatter-gather usage or (2) the scsi command allocated
2055 * a request buffer, but did not request use_sg. There is a third
2056 * case, but it does not require resource deallocation.
2058 if (psb
->seg_cnt
> 0)
2059 scsi_dma_unmap(psb
->pCmd
);
2060 if (psb
->prot_seg_cnt
> 0)
2061 dma_unmap_sg(&phba
->pcidev
->dev
, scsi_prot_sglist(psb
->pCmd
),
2062 scsi_prot_sg_count(psb
->pCmd
),
2063 psb
->pCmd
->sc_data_direction
);
2067 * lpfc_handler_fcp_err - FCP response handler
2068 * @vport: The virtual port for which this call is being executed.
2069 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
2070 * @rsp_iocb: The response IOCB which contains FCP error.
2072 * This routine is called to process response IOCB with status field
2073 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
2074 * based upon SCSI and FCP error.
2077 lpfc_handle_fcp_err(struct lpfc_vport
*vport
, struct lpfc_scsi_buf
*lpfc_cmd
,
2078 struct lpfc_iocbq
*rsp_iocb
)
2080 struct scsi_cmnd
*cmnd
= lpfc_cmd
->pCmd
;
2081 struct fcp_cmnd
*fcpcmd
= lpfc_cmd
->fcp_cmnd
;
2082 struct fcp_rsp
*fcprsp
= lpfc_cmd
->fcp_rsp
;
2083 uint32_t fcpi_parm
= rsp_iocb
->iocb
.un
.fcpi
.fcpi_parm
;
2084 uint32_t resp_info
= fcprsp
->rspStatus2
;
2085 uint32_t scsi_status
= fcprsp
->rspStatus3
;
2087 uint32_t host_status
= DID_OK
;
2088 uint32_t rsplen
= 0;
2089 uint32_t logit
= LOG_FCP
| LOG_FCP_ERROR
;
2093 * If this is a task management command, there is no
2094 * scsi packet associated with this lpfc_cmd. The driver
2097 if (fcpcmd
->fcpCntl2
) {
2102 if (resp_info
& RSP_LEN_VALID
) {
2103 rsplen
= be32_to_cpu(fcprsp
->rspRspLen
);
2104 if (rsplen
!= 0 && rsplen
!= 4 && rsplen
!= 8) {
2105 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
2106 "2719 Invalid response length: "
2107 "tgt x%x lun x%x cmnd x%x rsplen x%x\n",
2109 cmnd
->device
->lun
, cmnd
->cmnd
[0],
2111 host_status
= DID_ERROR
;
2114 if (fcprsp
->rspInfo3
!= RSP_NO_FAILURE
) {
2115 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
2116 "2757 Protocol failure detected during "
2117 "processing of FCP I/O op: "
2118 "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n",
2120 cmnd
->device
->lun
, cmnd
->cmnd
[0],
2122 host_status
= DID_ERROR
;
2127 if ((resp_info
& SNS_LEN_VALID
) && fcprsp
->rspSnsLen
) {
2128 uint32_t snslen
= be32_to_cpu(fcprsp
->rspSnsLen
);
2129 if (snslen
> SCSI_SENSE_BUFFERSIZE
)
2130 snslen
= SCSI_SENSE_BUFFERSIZE
;
2132 if (resp_info
& RSP_LEN_VALID
)
2133 rsplen
= be32_to_cpu(fcprsp
->rspRspLen
);
2134 memcpy(cmnd
->sense_buffer
, &fcprsp
->rspInfo0
+ rsplen
, snslen
);
2136 lp
= (uint32_t *)cmnd
->sense_buffer
;
2138 if (!scsi_status
&& (resp_info
& RESID_UNDER
))
2141 lpfc_printf_vlog(vport
, KERN_WARNING
, logit
,
2142 "9024 FCP command x%x failed: x%x SNS x%x x%x "
2143 "Data: x%x x%x x%x x%x x%x\n",
2144 cmnd
->cmnd
[0], scsi_status
,
2145 be32_to_cpu(*lp
), be32_to_cpu(*(lp
+ 3)), resp_info
,
2146 be32_to_cpu(fcprsp
->rspResId
),
2147 be32_to_cpu(fcprsp
->rspSnsLen
),
2148 be32_to_cpu(fcprsp
->rspRspLen
),
2151 scsi_set_resid(cmnd
, 0);
2152 if (resp_info
& RESID_UNDER
) {
2153 scsi_set_resid(cmnd
, be32_to_cpu(fcprsp
->rspResId
));
2155 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2156 "9025 FCP Read Underrun, expected %d, "
2157 "residual %d Data: x%x x%x x%x\n",
2158 be32_to_cpu(fcpcmd
->fcpDl
),
2159 scsi_get_resid(cmnd
), fcpi_parm
, cmnd
->cmnd
[0],
2163 * If there is an under run check if under run reported by
2164 * storage array is same as the under run reported by HBA.
2165 * If this is not same, there is a dropped frame.
2167 if ((cmnd
->sc_data_direction
== DMA_FROM_DEVICE
) &&
2169 (scsi_get_resid(cmnd
) != fcpi_parm
)) {
2170 lpfc_printf_vlog(vport
, KERN_WARNING
,
2171 LOG_FCP
| LOG_FCP_ERROR
,
2172 "9026 FCP Read Check Error "
2173 "and Underrun Data: x%x x%x x%x x%x\n",
2174 be32_to_cpu(fcpcmd
->fcpDl
),
2175 scsi_get_resid(cmnd
), fcpi_parm
,
2177 scsi_set_resid(cmnd
, scsi_bufflen(cmnd
));
2178 host_status
= DID_ERROR
;
2181 * The cmnd->underflow is the minimum number of bytes that must
2182 * be transfered for this command. Provided a sense condition
2183 * is not present, make sure the actual amount transferred is at
2184 * least the underflow value or fail.
2186 if (!(resp_info
& SNS_LEN_VALID
) &&
2187 (scsi_status
== SAM_STAT_GOOD
) &&
2188 (scsi_bufflen(cmnd
) - scsi_get_resid(cmnd
)
2189 < cmnd
->underflow
)) {
2190 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2191 "9027 FCP command x%x residual "
2192 "underrun converted to error "
2193 "Data: x%x x%x x%x\n",
2194 cmnd
->cmnd
[0], scsi_bufflen(cmnd
),
2195 scsi_get_resid(cmnd
), cmnd
->underflow
);
2196 host_status
= DID_ERROR
;
2198 } else if (resp_info
& RESID_OVER
) {
2199 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
2200 "9028 FCP command x%x residual overrun error. "
2201 "Data: x%x x%x\n", cmnd
->cmnd
[0],
2202 scsi_bufflen(cmnd
), scsi_get_resid(cmnd
));
2203 host_status
= DID_ERROR
;
2206 * Check SLI validation that all the transfer was actually done
2207 * (fcpi_parm should be zero). Apply check only to reads.
2209 } else if ((scsi_status
== SAM_STAT_GOOD
) && fcpi_parm
&&
2210 (cmnd
->sc_data_direction
== DMA_FROM_DEVICE
)) {
2211 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
| LOG_FCP_ERROR
,
2212 "9029 FCP Read Check Error Data: "
2213 "x%x x%x x%x x%x\n",
2214 be32_to_cpu(fcpcmd
->fcpDl
),
2215 be32_to_cpu(fcprsp
->rspResId
),
2216 fcpi_parm
, cmnd
->cmnd
[0]);
2217 host_status
= DID_ERROR
;
2218 scsi_set_resid(cmnd
, scsi_bufflen(cmnd
));
2222 cmnd
->result
= ScsiResult(host_status
, scsi_status
);
2223 lpfc_send_scsi_error_event(vport
->phba
, vport
, lpfc_cmd
, rsp_iocb
);
2227 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
2228 * @phba: The Hba for which this call is being executed.
2229 * @pIocbIn: The command IOCBQ for the scsi cmnd.
2230 * @pIocbOut: The response IOCBQ for the scsi cmnd.
2232 * This routine assigns scsi command result by looking into response IOCB
2233 * status field appropriately. This routine handles QUEUE FULL condition as
2234 * well by ramping down device queue depth.
2237 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba
*phba
, struct lpfc_iocbq
*pIocbIn
,
2238 struct lpfc_iocbq
*pIocbOut
)
2240 struct lpfc_scsi_buf
*lpfc_cmd
=
2241 (struct lpfc_scsi_buf
*) pIocbIn
->context1
;
2242 struct lpfc_vport
*vport
= pIocbIn
->vport
;
2243 struct lpfc_rport_data
*rdata
= lpfc_cmd
->rdata
;
2244 struct lpfc_nodelist
*pnode
= rdata
->pnode
;
2245 struct scsi_cmnd
*cmd
= lpfc_cmd
->pCmd
;
2247 struct scsi_device
*tmp_sdev
;
2249 unsigned long flags
;
2250 struct lpfc_fast_path_event
*fast_path_evt
;
2251 struct Scsi_Host
*shost
= cmd
->device
->host
;
2252 uint32_t queue_depth
, scsi_id
;
2254 lpfc_cmd
->result
= pIocbOut
->iocb
.un
.ulpWord
[4];
2255 lpfc_cmd
->status
= pIocbOut
->iocb
.ulpStatus
;
2256 /* pick up SLI4 exhange busy status from HBA */
2257 lpfc_cmd
->exch_busy
= pIocbOut
->iocb_flag
& LPFC_EXCHANGE_BUSY
;
2259 if (pnode
&& NLP_CHK_NODE_ACT(pnode
))
2260 atomic_dec(&pnode
->cmd_pending
);
2262 if (lpfc_cmd
->status
) {
2263 if (lpfc_cmd
->status
== IOSTAT_LOCAL_REJECT
&&
2264 (lpfc_cmd
->result
& IOERR_DRVR_MASK
))
2265 lpfc_cmd
->status
= IOSTAT_DRIVER_REJECT
;
2266 else if (lpfc_cmd
->status
>= IOSTAT_CNT
)
2267 lpfc_cmd
->status
= IOSTAT_DEFAULT
;
2269 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
2270 "9030 FCP cmd x%x failed <%d/%d> "
2271 "status: x%x result: x%x Data: x%x x%x\n",
2273 cmd
->device
? cmd
->device
->id
: 0xffff,
2274 cmd
->device
? cmd
->device
->lun
: 0xffff,
2275 lpfc_cmd
->status
, lpfc_cmd
->result
,
2276 pIocbOut
->iocb
.ulpContext
,
2277 lpfc_cmd
->cur_iocbq
.iocb
.ulpIoTag
);
2279 switch (lpfc_cmd
->status
) {
2280 case IOSTAT_FCP_RSP_ERROR
:
2281 /* Call FCP RSP handler to determine result */
2282 lpfc_handle_fcp_err(vport
, lpfc_cmd
, pIocbOut
);
2284 case IOSTAT_NPORT_BSY
:
2285 case IOSTAT_FABRIC_BSY
:
2286 cmd
->result
= ScsiResult(DID_TRANSPORT_DISRUPTED
, 0);
2287 fast_path_evt
= lpfc_alloc_fast_evt(phba
);
2290 fast_path_evt
->un
.fabric_evt
.event_type
=
2291 FC_REG_FABRIC_EVENT
;
2292 fast_path_evt
->un
.fabric_evt
.subcategory
=
2293 (lpfc_cmd
->status
== IOSTAT_NPORT_BSY
) ?
2294 LPFC_EVENT_PORT_BUSY
: LPFC_EVENT_FABRIC_BUSY
;
2295 if (pnode
&& NLP_CHK_NODE_ACT(pnode
)) {
2296 memcpy(&fast_path_evt
->un
.fabric_evt
.wwpn
,
2297 &pnode
->nlp_portname
,
2298 sizeof(struct lpfc_name
));
2299 memcpy(&fast_path_evt
->un
.fabric_evt
.wwnn
,
2300 &pnode
->nlp_nodename
,
2301 sizeof(struct lpfc_name
));
2303 fast_path_evt
->vport
= vport
;
2304 fast_path_evt
->work_evt
.evt
=
2305 LPFC_EVT_FASTPATH_MGMT_EVT
;
2306 spin_lock_irqsave(&phba
->hbalock
, flags
);
2307 list_add_tail(&fast_path_evt
->work_evt
.evt_listp
,
2309 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
2310 lpfc_worker_wake_up(phba
);
2312 case IOSTAT_LOCAL_REJECT
:
2313 if (lpfc_cmd
->result
== IOERR_INVALID_RPI
||
2314 lpfc_cmd
->result
== IOERR_NO_RESOURCES
||
2315 lpfc_cmd
->result
== IOERR_ABORT_REQUESTED
) {
2316 cmd
->result
= ScsiResult(DID_REQUEUE
, 0);
2320 if ((lpfc_cmd
->result
== IOERR_RX_DMA_FAILED
||
2321 lpfc_cmd
->result
== IOERR_TX_DMA_FAILED
) &&
2322 pIocbOut
->iocb
.unsli3
.sli3_bg
.bgstat
) {
2323 if (scsi_get_prot_op(cmd
) != SCSI_PROT_NORMAL
) {
2325 * This is a response for a BG enabled
2326 * cmd. Parse BG error
2328 lpfc_parse_bg_err(phba
, lpfc_cmd
,
2332 lpfc_printf_vlog(vport
, KERN_WARNING
,
2334 "9031 non-zero BGSTAT "
2335 "on unprotected cmd\n");
2339 /* else: fall through */
2341 cmd
->result
= ScsiResult(DID_ERROR
, 0);
2345 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
)
2346 || (pnode
->nlp_state
!= NLP_STE_MAPPED_NODE
))
2347 cmd
->result
= ScsiResult(DID_TRANSPORT_DISRUPTED
,
2350 cmd
->result
= ScsiResult(DID_OK
, 0);
2353 if (cmd
->result
|| lpfc_cmd
->fcp_rsp
->rspSnsLen
) {
2354 uint32_t *lp
= (uint32_t *)cmd
->sense_buffer
;
2356 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2357 "0710 Iodone <%d/%d> cmd %p, error "
2358 "x%x SNS x%x x%x Data: x%x x%x\n",
2359 cmd
->device
->id
, cmd
->device
->lun
, cmd
,
2360 cmd
->result
, *lp
, *(lp
+ 3), cmd
->retries
,
2361 scsi_get_resid(cmd
));
2364 lpfc_update_stats(phba
, lpfc_cmd
);
2365 result
= cmd
->result
;
2366 if (vport
->cfg_max_scsicmpl_time
&&
2367 time_after(jiffies
, lpfc_cmd
->start_time
+
2368 msecs_to_jiffies(vport
->cfg_max_scsicmpl_time
))) {
2369 spin_lock_irqsave(shost
->host_lock
, flags
);
2370 if (pnode
&& NLP_CHK_NODE_ACT(pnode
)) {
2371 if (pnode
->cmd_qdepth
>
2372 atomic_read(&pnode
->cmd_pending
) &&
2373 (atomic_read(&pnode
->cmd_pending
) >
2374 LPFC_MIN_TGT_QDEPTH
) &&
2375 ((cmd
->cmnd
[0] == READ_10
) ||
2376 (cmd
->cmnd
[0] == WRITE_10
)))
2378 atomic_read(&pnode
->cmd_pending
);
2380 pnode
->last_change_time
= jiffies
;
2382 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2383 } else if (pnode
&& NLP_CHK_NODE_ACT(pnode
)) {
2384 if ((pnode
->cmd_qdepth
< LPFC_MAX_TGT_QDEPTH
) &&
2385 time_after(jiffies
, pnode
->last_change_time
+
2386 msecs_to_jiffies(LPFC_TGTQ_INTERVAL
))) {
2387 spin_lock_irqsave(shost
->host_lock
, flags
);
2388 pnode
->cmd_qdepth
+= pnode
->cmd_qdepth
*
2389 LPFC_TGTQ_RAMPUP_PCENT
/ 100;
2390 if (pnode
->cmd_qdepth
> LPFC_MAX_TGT_QDEPTH
)
2391 pnode
->cmd_qdepth
= LPFC_MAX_TGT_QDEPTH
;
2392 pnode
->last_change_time
= jiffies
;
2393 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2397 lpfc_scsi_unprep_dma_buf(phba
, lpfc_cmd
);
2399 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
2400 queue_depth
= cmd
->device
->queue_depth
;
2401 scsi_id
= cmd
->device
->id
;
2402 cmd
->scsi_done(cmd
);
2404 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
2406 * If there is a thread waiting for command completion
2407 * wake up the thread.
2409 spin_lock_irqsave(shost
->host_lock
, flags
);
2410 lpfc_cmd
->pCmd
= NULL
;
2411 if (lpfc_cmd
->waitq
)
2412 wake_up(lpfc_cmd
->waitq
);
2413 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2414 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2419 lpfc_rampup_queue_depth(vport
, queue_depth
);
2422 * Check for queue full. If the lun is reporting queue full, then
2423 * back off the lun queue depth to prevent target overloads.
2425 if (result
== SAM_STAT_TASK_SET_FULL
&& pnode
&&
2426 NLP_CHK_NODE_ACT(pnode
)) {
2427 shost_for_each_device(tmp_sdev
, shost
) {
2428 if (tmp_sdev
->id
!= scsi_id
)
2430 depth
= scsi_track_queue_full(tmp_sdev
,
2431 tmp_sdev
->queue_depth
-1);
2434 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
2435 "0711 detected queue full - lun queue "
2436 "depth adjusted to %d.\n", depth
);
2437 lpfc_send_sdev_queuedepth_change_event(phba
, vport
,
2445 * If there is a thread waiting for command completion
2446 * wake up the thread.
2448 spin_lock_irqsave(shost
->host_lock
, flags
);
2449 lpfc_cmd
->pCmd
= NULL
;
2450 if (lpfc_cmd
->waitq
)
2451 wake_up(lpfc_cmd
->waitq
);
2452 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2454 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2458 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
2459 * @data: A pointer to the immediate command data portion of the IOCB.
2460 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
2462 * The routine copies the entire FCP command from @fcp_cmnd to @data while
2463 * byte swapping the data to big endian format for transmission on the wire.
2466 lpfc_fcpcmd_to_iocb(uint8_t *data
, struct fcp_cmnd
*fcp_cmnd
)
2469 for (i
= 0, j
= 0; i
< sizeof(struct fcp_cmnd
);
2470 i
+= sizeof(uint32_t), j
++) {
2471 ((uint32_t *)data
)[j
] = cpu_to_be32(((uint32_t *)fcp_cmnd
)[j
]);
2476 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
2477 * @vport: The virtual port for which this call is being executed.
2478 * @lpfc_cmd: The scsi command which needs to send.
2479 * @pnode: Pointer to lpfc_nodelist.
2481 * This routine initializes fcp_cmnd and iocb data structure from scsi command
2482 * to transfer for device with SLI3 interface spec.
2485 lpfc_scsi_prep_cmnd(struct lpfc_vport
*vport
, struct lpfc_scsi_buf
*lpfc_cmd
,
2486 struct lpfc_nodelist
*pnode
)
2488 struct lpfc_hba
*phba
= vport
->phba
;
2489 struct scsi_cmnd
*scsi_cmnd
= lpfc_cmd
->pCmd
;
2490 struct fcp_cmnd
*fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
2491 IOCB_t
*iocb_cmd
= &lpfc_cmd
->cur_iocbq
.iocb
;
2492 struct lpfc_iocbq
*piocbq
= &(lpfc_cmd
->cur_iocbq
);
2493 int datadir
= scsi_cmnd
->sc_data_direction
;
2496 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
))
2499 lpfc_cmd
->fcp_rsp
->rspSnsLen
= 0;
2500 /* clear task management bits */
2501 lpfc_cmd
->fcp_cmnd
->fcpCntl2
= 0;
2503 int_to_scsilun(lpfc_cmd
->pCmd
->device
->lun
,
2504 &lpfc_cmd
->fcp_cmnd
->fcp_lun
);
2506 memcpy(&fcp_cmnd
->fcpCdb
[0], scsi_cmnd
->cmnd
, 16);
2508 if (scsi_populate_tag_msg(scsi_cmnd
, tag
)) {
2510 case HEAD_OF_QUEUE_TAG
:
2511 fcp_cmnd
->fcpCntl1
= HEAD_OF_Q
;
2513 case ORDERED_QUEUE_TAG
:
2514 fcp_cmnd
->fcpCntl1
= ORDERED_Q
;
2517 fcp_cmnd
->fcpCntl1
= SIMPLE_Q
;
2521 fcp_cmnd
->fcpCntl1
= 0;
2524 * There are three possibilities here - use scatter-gather segment, use
2525 * the single mapping, or neither. Start the lpfc command prep by
2526 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
2529 if (scsi_sg_count(scsi_cmnd
)) {
2530 if (datadir
== DMA_TO_DEVICE
) {
2531 iocb_cmd
->ulpCommand
= CMD_FCP_IWRITE64_CR
;
2532 if (phba
->sli_rev
< LPFC_SLI_REV4
) {
2533 iocb_cmd
->un
.fcpi
.fcpi_parm
= 0;
2534 iocb_cmd
->ulpPU
= 0;
2536 iocb_cmd
->ulpPU
= PARM_READ_CHECK
;
2537 fcp_cmnd
->fcpCntl3
= WRITE_DATA
;
2538 phba
->fc4OutputRequests
++;
2540 iocb_cmd
->ulpCommand
= CMD_FCP_IREAD64_CR
;
2541 iocb_cmd
->ulpPU
= PARM_READ_CHECK
;
2542 fcp_cmnd
->fcpCntl3
= READ_DATA
;
2543 phba
->fc4InputRequests
++;
2546 iocb_cmd
->ulpCommand
= CMD_FCP_ICMND64_CR
;
2547 iocb_cmd
->un
.fcpi
.fcpi_parm
= 0;
2548 iocb_cmd
->ulpPU
= 0;
2549 fcp_cmnd
->fcpCntl3
= 0;
2550 phba
->fc4ControlRequests
++;
2552 if (phba
->sli_rev
== 3 &&
2553 !(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
))
2554 lpfc_fcpcmd_to_iocb(iocb_cmd
->unsli3
.fcp_ext
.icd
, fcp_cmnd
);
2556 * Finish initializing those IOCB fields that are independent
2557 * of the scsi_cmnd request_buffer
2559 piocbq
->iocb
.ulpContext
= pnode
->nlp_rpi
;
2560 if (pnode
->nlp_fcp_info
& NLP_FCP_2_DEVICE
)
2561 piocbq
->iocb
.ulpFCP2Rcvy
= 1;
2563 piocbq
->iocb
.ulpFCP2Rcvy
= 0;
2565 piocbq
->iocb
.ulpClass
= (pnode
->nlp_fcp_info
& 0x0f);
2566 piocbq
->context1
= lpfc_cmd
;
2567 piocbq
->iocb_cmpl
= lpfc_scsi_cmd_iocb_cmpl
;
2568 piocbq
->iocb
.ulpTimeout
= lpfc_cmd
->timeout
;
2569 piocbq
->vport
= vport
;
2573 * lpfc_scsi_prep_task_mgmt_cmnd - Convert SLI3 scsi TM cmd to FCP info unit
2574 * @vport: The virtual port for which this call is being executed.
2575 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
2576 * @lun: Logical unit number.
2577 * @task_mgmt_cmd: SCSI task management command.
2579 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
2580 * for device with SLI-3 interface spec.
2587 lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport
*vport
,
2588 struct lpfc_scsi_buf
*lpfc_cmd
,
2590 uint8_t task_mgmt_cmd
)
2592 struct lpfc_iocbq
*piocbq
;
2594 struct fcp_cmnd
*fcp_cmnd
;
2595 struct lpfc_rport_data
*rdata
= lpfc_cmd
->rdata
;
2596 struct lpfc_nodelist
*ndlp
= rdata
->pnode
;
2598 if (!ndlp
|| !NLP_CHK_NODE_ACT(ndlp
) ||
2599 ndlp
->nlp_state
!= NLP_STE_MAPPED_NODE
)
2602 piocbq
= &(lpfc_cmd
->cur_iocbq
);
2603 piocbq
->vport
= vport
;
2605 piocb
= &piocbq
->iocb
;
2607 fcp_cmnd
= lpfc_cmd
->fcp_cmnd
;
2608 /* Clear out any old data in the FCP command area */
2609 memset(fcp_cmnd
, 0, sizeof(struct fcp_cmnd
));
2610 int_to_scsilun(lun
, &fcp_cmnd
->fcp_lun
);
2611 fcp_cmnd
->fcpCntl2
= task_mgmt_cmd
;
2612 if (vport
->phba
->sli_rev
== 3 &&
2613 !(vport
->phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
))
2614 lpfc_fcpcmd_to_iocb(piocb
->unsli3
.fcp_ext
.icd
, fcp_cmnd
);
2615 piocb
->ulpCommand
= CMD_FCP_ICMND64_CR
;
2616 piocb
->ulpContext
= ndlp
->nlp_rpi
;
2617 if (ndlp
->nlp_fcp_info
& NLP_FCP_2_DEVICE
) {
2618 piocb
->ulpFCP2Rcvy
= 1;
2620 piocb
->ulpClass
= (ndlp
->nlp_fcp_info
& 0x0f);
2622 /* ulpTimeout is only one byte */
2623 if (lpfc_cmd
->timeout
> 0xff) {
2625 * Do not timeout the command at the firmware level.
2626 * The driver will provide the timeout mechanism.
2628 piocb
->ulpTimeout
= 0;
2630 piocb
->ulpTimeout
= lpfc_cmd
->timeout
;
2632 if (vport
->phba
->sli_rev
== LPFC_SLI_REV4
)
2633 lpfc_sli4_set_rsp_sgl_last(vport
->phba
, lpfc_cmd
);
2639 * lpfc_scsi_api_table_setup - Set up scsi api fucntion jump table
2640 * @phba: The hba struct for which this call is being executed.
2641 * @dev_grp: The HBA PCI-Device group number.
2643 * This routine sets up the SCSI interface API function jump table in @phba
2645 * Returns: 0 - success, -ENODEV - failure.
2648 lpfc_scsi_api_table_setup(struct lpfc_hba
*phba
, uint8_t dev_grp
)
2651 phba
->lpfc_scsi_unprep_dma_buf
= lpfc_scsi_unprep_dma_buf
;
2652 phba
->lpfc_scsi_prep_cmnd
= lpfc_scsi_prep_cmnd
;
2653 phba
->lpfc_get_scsi_buf
= lpfc_get_scsi_buf
;
2656 case LPFC_PCI_DEV_LP
:
2657 phba
->lpfc_new_scsi_buf
= lpfc_new_scsi_buf_s3
;
2658 phba
->lpfc_scsi_prep_dma_buf
= lpfc_scsi_prep_dma_buf_s3
;
2659 phba
->lpfc_release_scsi_buf
= lpfc_release_scsi_buf_s3
;
2661 case LPFC_PCI_DEV_OC
:
2662 phba
->lpfc_new_scsi_buf
= lpfc_new_scsi_buf_s4
;
2663 phba
->lpfc_scsi_prep_dma_buf
= lpfc_scsi_prep_dma_buf_s4
;
2664 phba
->lpfc_release_scsi_buf
= lpfc_release_scsi_buf_s4
;
2667 lpfc_printf_log(phba
, KERN_ERR
, LOG_INIT
,
2668 "1418 Invalid HBA PCI-device group: 0x%x\n",
2673 phba
->lpfc_get_scsi_buf
= lpfc_get_scsi_buf
;
2674 phba
->lpfc_rampdown_queue_depth
= lpfc_rampdown_queue_depth
;
2675 phba
->lpfc_scsi_cmd_iocb_cmpl
= lpfc_scsi_cmd_iocb_cmpl
;
2680 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
2681 * @phba: The Hba for which this call is being executed.
2682 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
2683 * @rspiocbq: Pointer to lpfc_iocbq data structure.
2685 * This routine is IOCB completion routine for device reset and target reset
2686 * routine. This routine release scsi buffer associated with lpfc_cmd.
2689 lpfc_tskmgmt_def_cmpl(struct lpfc_hba
*phba
,
2690 struct lpfc_iocbq
*cmdiocbq
,
2691 struct lpfc_iocbq
*rspiocbq
)
2693 struct lpfc_scsi_buf
*lpfc_cmd
=
2694 (struct lpfc_scsi_buf
*) cmdiocbq
->context1
;
2696 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2701 * lpfc_info - Info entry point of scsi_host_template data structure
2702 * @host: The scsi host for which this call is being executed.
2704 * This routine provides module information about hba.
2707 * Pointer to char - Success.
2710 lpfc_info(struct Scsi_Host
*host
)
2712 struct lpfc_vport
*vport
= (struct lpfc_vport
*) host
->hostdata
;
2713 struct lpfc_hba
*phba
= vport
->phba
;
2715 static char lpfcinfobuf
[384];
2717 memset(lpfcinfobuf
,0,384);
2718 if (phba
&& phba
->pcidev
){
2719 strncpy(lpfcinfobuf
, phba
->ModelDesc
, 256);
2720 len
= strlen(lpfcinfobuf
);
2721 snprintf(lpfcinfobuf
+ len
,
2723 " on PCI bus %02x device %02x irq %d",
2724 phba
->pcidev
->bus
->number
,
2725 phba
->pcidev
->devfn
,
2727 len
= strlen(lpfcinfobuf
);
2728 if (phba
->Port
[0]) {
2729 snprintf(lpfcinfobuf
+ len
,
2734 len
= strlen(lpfcinfobuf
);
2735 if (phba
->sli4_hba
.link_state
.logical_speed
) {
2736 snprintf(lpfcinfobuf
+ len
,
2738 " Logical Link Speed: %d Mbps",
2739 phba
->sli4_hba
.link_state
.logical_speed
* 10);
2746 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
2747 * @phba: The Hba for which this call is being executed.
2749 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
2750 * The default value of cfg_poll_tmo is 10 milliseconds.
2752 static __inline__
void lpfc_poll_rearm_timer(struct lpfc_hba
* phba
)
2754 unsigned long poll_tmo_expires
=
2755 (jiffies
+ msecs_to_jiffies(phba
->cfg_poll_tmo
));
2757 if (phba
->sli
.ring
[LPFC_FCP_RING
].txcmplq_cnt
)
2758 mod_timer(&phba
->fcp_poll_timer
,
2763 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
2764 * @phba: The Hba for which this call is being executed.
2766 * This routine starts the fcp_poll_timer of @phba.
2768 void lpfc_poll_start_timer(struct lpfc_hba
* phba
)
2770 lpfc_poll_rearm_timer(phba
);
2774 * lpfc_poll_timeout - Restart polling timer
2775 * @ptr: Map to lpfc_hba data structure pointer.
2777 * This routine restarts fcp_poll timer, when FCP ring polling is enable
2778 * and FCP Ring interrupt is disable.
2781 void lpfc_poll_timeout(unsigned long ptr
)
2783 struct lpfc_hba
*phba
= (struct lpfc_hba
*) ptr
;
2785 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
2786 lpfc_sli_handle_fast_ring_event(phba
,
2787 &phba
->sli
.ring
[LPFC_FCP_RING
], HA_R0RE_REQ
);
2789 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
2790 lpfc_poll_rearm_timer(phba
);
2795 * lpfc_queuecommand - scsi_host_template queuecommand entry point
2796 * @cmnd: Pointer to scsi_cmnd data structure.
2797 * @done: Pointer to done routine.
2799 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
2800 * This routine prepares an IOCB from scsi command and provides to firmware.
2801 * The @done callback is invoked after driver finished processing the command.
2805 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
2808 lpfc_queuecommand(struct scsi_cmnd
*cmnd
, void (*done
) (struct scsi_cmnd
*))
2810 struct Scsi_Host
*shost
= cmnd
->device
->host
;
2811 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
2812 struct lpfc_hba
*phba
= vport
->phba
;
2813 struct lpfc_rport_data
*rdata
= cmnd
->device
->hostdata
;
2814 struct lpfc_nodelist
*ndlp
;
2815 struct lpfc_scsi_buf
*lpfc_cmd
;
2816 struct fc_rport
*rport
= starget_to_rport(scsi_target(cmnd
->device
));
2819 err
= fc_remote_port_chkready(rport
);
2822 goto out_fail_command
;
2824 ndlp
= rdata
->pnode
;
2826 if (!(phba
->sli3_options
& LPFC_SLI3_BG_ENABLED
) &&
2827 scsi_get_prot_op(cmnd
) != SCSI_PROT_NORMAL
) {
2829 lpfc_printf_log(phba
, KERN_ERR
, LOG_BG
,
2830 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
2831 " op:%02x str=%s without registering for"
2832 " BlockGuard - Rejecting command\n",
2833 cmnd
->cmnd
[0], scsi_get_prot_op(cmnd
),
2834 dif_op_str
[scsi_get_prot_op(cmnd
)]);
2835 goto out_fail_command
;
2839 * Catch race where our node has transitioned, but the
2840 * transport is still transitioning.
2842 if (!ndlp
|| !NLP_CHK_NODE_ACT(ndlp
)) {
2843 cmnd
->result
= ScsiResult(DID_TRANSPORT_DISRUPTED
, 0);
2844 goto out_fail_command
;
2846 if (vport
->cfg_max_scsicmpl_time
&&
2847 (atomic_read(&ndlp
->cmd_pending
) >= ndlp
->cmd_qdepth
))
2850 lpfc_cmd
= lpfc_get_scsi_buf(phba
);
2851 if (lpfc_cmd
== NULL
) {
2852 lpfc_rampdown_queue_depth(phba
);
2854 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
2855 "0707 driver's buffer pool is empty, "
2861 * Store the midlayer's command structure for the completion phase
2862 * and complete the command initialization.
2864 lpfc_cmd
->pCmd
= cmnd
;
2865 lpfc_cmd
->rdata
= rdata
;
2866 lpfc_cmd
->timeout
= 0;
2867 lpfc_cmd
->start_time
= jiffies
;
2868 cmnd
->host_scribble
= (unsigned char *)lpfc_cmd
;
2869 cmnd
->scsi_done
= done
;
2871 if (scsi_get_prot_op(cmnd
) != SCSI_PROT_NORMAL
) {
2872 if (vport
->phba
->cfg_enable_bg
) {
2873 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2874 "9033 BLKGRD: rcvd protected cmd:%02x op:%02x "
2876 cmnd
->cmnd
[0], scsi_get_prot_op(cmnd
),
2877 dif_op_str
[scsi_get_prot_op(cmnd
)]);
2878 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2879 "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x "
2880 "%02x %02x %02x %02x %02x\n",
2881 cmnd
->cmnd
[0], cmnd
->cmnd
[1], cmnd
->cmnd
[2],
2882 cmnd
->cmnd
[3], cmnd
->cmnd
[4], cmnd
->cmnd
[5],
2883 cmnd
->cmnd
[6], cmnd
->cmnd
[7], cmnd
->cmnd
[8],
2885 if (cmnd
->cmnd
[0] == READ_10
)
2886 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2887 "9035 BLKGRD: READ @ sector %llu, "
2889 (unsigned long long)scsi_get_lba(cmnd
),
2890 blk_rq_sectors(cmnd
->request
));
2891 else if (cmnd
->cmnd
[0] == WRITE_10
)
2892 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2893 "9036 BLKGRD: WRITE @ sector %llu, "
2894 "count %u cmd=%p\n",
2895 (unsigned long long)scsi_get_lba(cmnd
),
2896 blk_rq_sectors(cmnd
->request
),
2900 err
= lpfc_bg_scsi_prep_dma_buf(phba
, lpfc_cmd
);
2902 if (vport
->phba
->cfg_enable_bg
) {
2903 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2904 "9038 BLKGRD: rcvd unprotected cmd:"
2905 "%02x op:%02x str=%s\n",
2906 cmnd
->cmnd
[0], scsi_get_prot_op(cmnd
),
2907 dif_op_str
[scsi_get_prot_op(cmnd
)]);
2908 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2909 "9039 BLKGRD: CDB: %02x %02x %02x "
2910 "%02x %02x %02x %02x %02x %02x %02x\n",
2911 cmnd
->cmnd
[0], cmnd
->cmnd
[1],
2912 cmnd
->cmnd
[2], cmnd
->cmnd
[3],
2913 cmnd
->cmnd
[4], cmnd
->cmnd
[5],
2914 cmnd
->cmnd
[6], cmnd
->cmnd
[7],
2915 cmnd
->cmnd
[8], cmnd
->cmnd
[9]);
2916 if (cmnd
->cmnd
[0] == READ_10
)
2917 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2918 "9040 dbg: READ @ sector %llu, "
2920 (unsigned long long)scsi_get_lba(cmnd
),
2921 blk_rq_sectors(cmnd
->request
));
2922 else if (cmnd
->cmnd
[0] == WRITE_10
)
2923 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2924 "9041 dbg: WRITE @ sector %llu, "
2925 "count %u cmd=%p\n",
2926 (unsigned long long)scsi_get_lba(cmnd
),
2927 blk_rq_sectors(cmnd
->request
), cmnd
);
2929 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_BG
,
2930 "9042 dbg: parser not implemented\n");
2932 err
= lpfc_scsi_prep_dma_buf(phba
, lpfc_cmd
);
2936 goto out_host_busy_free_buf
;
2938 lpfc_scsi_prep_cmnd(vport
, lpfc_cmd
, ndlp
);
2940 atomic_inc(&ndlp
->cmd_pending
);
2941 err
= lpfc_sli_issue_iocb(phba
, LPFC_FCP_RING
,
2942 &lpfc_cmd
->cur_iocbq
, SLI_IOCB_RET_IOCB
);
2944 atomic_dec(&ndlp
->cmd_pending
);
2945 goto out_host_busy_free_buf
;
2947 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
2948 spin_unlock(shost
->host_lock
);
2949 lpfc_sli_handle_fast_ring_event(phba
,
2950 &phba
->sli
.ring
[LPFC_FCP_RING
], HA_R0RE_REQ
);
2952 spin_lock(shost
->host_lock
);
2953 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
2954 lpfc_poll_rearm_timer(phba
);
2959 out_host_busy_free_buf
:
2960 lpfc_scsi_unprep_dma_buf(phba
, lpfc_cmd
);
2961 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
2963 return SCSI_MLQUEUE_HOST_BUSY
;
2971 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
2972 * @cmnd: Pointer to scsi_cmnd data structure.
2974 * This routine aborts @cmnd pending in base driver.
2981 lpfc_abort_handler(struct scsi_cmnd
*cmnd
)
2983 struct Scsi_Host
*shost
= cmnd
->device
->host
;
2984 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
2985 struct lpfc_hba
*phba
= vport
->phba
;
2986 struct lpfc_iocbq
*iocb
;
2987 struct lpfc_iocbq
*abtsiocb
;
2988 struct lpfc_scsi_buf
*lpfc_cmd
;
2991 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq
);
2993 fc_block_scsi_eh(cmnd
);
2994 lpfc_cmd
= (struct lpfc_scsi_buf
*)cmnd
->host_scribble
;
2998 * If pCmd field of the corresponding lpfc_scsi_buf structure
2999 * points to a different SCSI command, then the driver has
3000 * already completed this command, but the midlayer did not
3001 * see the completion before the eh fired. Just return
3004 iocb
= &lpfc_cmd
->cur_iocbq
;
3005 if (lpfc_cmd
->pCmd
!= cmnd
)
3008 BUG_ON(iocb
->context1
!= lpfc_cmd
);
3010 abtsiocb
= lpfc_sli_get_iocbq(phba
);
3011 if (abtsiocb
== NULL
) {
3017 * The scsi command can not be in txq and it is in flight because the
3018 * pCmd is still pointig at the SCSI command we have to abort. There
3019 * is no need to search the txcmplq. Just send an abort to the FW.
3023 icmd
= &abtsiocb
->iocb
;
3024 icmd
->un
.acxri
.abortType
= ABORT_TYPE_ABTS
;
3025 icmd
->un
.acxri
.abortContextTag
= cmd
->ulpContext
;
3026 if (phba
->sli_rev
== LPFC_SLI_REV4
)
3027 icmd
->un
.acxri
.abortIoTag
= iocb
->sli4_xritag
;
3029 icmd
->un
.acxri
.abortIoTag
= cmd
->ulpIoTag
;
3032 icmd
->ulpClass
= cmd
->ulpClass
;
3034 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
3035 abtsiocb
->fcp_wqidx
= iocb
->fcp_wqidx
;
3036 abtsiocb
->iocb_flag
|= LPFC_USE_FCPWQIDX
;
3038 if (lpfc_is_link_up(phba
))
3039 icmd
->ulpCommand
= CMD_ABORT_XRI_CN
;
3041 icmd
->ulpCommand
= CMD_CLOSE_XRI_CN
;
3043 abtsiocb
->iocb_cmpl
= lpfc_sli_abort_fcp_cmpl
;
3044 abtsiocb
->vport
= vport
;
3045 if (lpfc_sli_issue_iocb(phba
, LPFC_FCP_RING
, abtsiocb
, 0) ==
3047 lpfc_sli_release_iocbq(phba
, abtsiocb
);
3052 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
3053 lpfc_sli_handle_fast_ring_event(phba
,
3054 &phba
->sli
.ring
[LPFC_FCP_RING
], HA_R0RE_REQ
);
3056 lpfc_cmd
->waitq
= &waitq
;
3057 /* Wait for abort to complete */
3058 wait_event_timeout(waitq
,
3059 (lpfc_cmd
->pCmd
!= cmnd
),
3060 (2*vport
->cfg_devloss_tmo
*HZ
));
3062 spin_lock_irq(shost
->host_lock
);
3063 lpfc_cmd
->waitq
= NULL
;
3064 spin_unlock_irq(shost
->host_lock
);
3066 if (lpfc_cmd
->pCmd
== cmnd
) {
3068 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3069 "0748 abort handler timed out waiting "
3070 "for abort to complete: ret %#x, ID %d, "
3071 "LUN %d, snum %#lx\n",
3072 ret
, cmnd
->device
->id
, cmnd
->device
->lun
,
3073 cmnd
->serial_number
);
3077 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3078 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
3079 "LUN %d snum %#lx\n", ret
, cmnd
->device
->id
,
3080 cmnd
->device
->lun
, cmnd
->serial_number
);
3085 lpfc_taskmgmt_name(uint8_t task_mgmt_cmd
)
3087 switch (task_mgmt_cmd
) {
3088 case FCP_ABORT_TASK_SET
:
3089 return "ABORT_TASK_SET";
3090 case FCP_CLEAR_TASK_SET
:
3091 return "FCP_CLEAR_TASK_SET";
3093 return "FCP_BUS_RESET";
3095 return "FCP_LUN_RESET";
3096 case FCP_TARGET_RESET
:
3097 return "FCP_TARGET_RESET";
3099 return "FCP_CLEAR_ACA";
3100 case FCP_TERMINATE_TASK
:
3101 return "FCP_TERMINATE_TASK";
3108 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
3109 * @vport: The virtual port for which this call is being executed.
3110 * @rdata: Pointer to remote port local data
3111 * @tgt_id: Target ID of remote device.
3112 * @lun_id: Lun number for the TMF
3113 * @task_mgmt_cmd: type of TMF to send
3115 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
3123 lpfc_send_taskmgmt(struct lpfc_vport
*vport
, struct lpfc_rport_data
*rdata
,
3124 unsigned tgt_id
, unsigned int lun_id
,
3125 uint8_t task_mgmt_cmd
)
3127 struct lpfc_hba
*phba
= vport
->phba
;
3128 struct lpfc_scsi_buf
*lpfc_cmd
;
3129 struct lpfc_iocbq
*iocbq
;
3130 struct lpfc_iocbq
*iocbqrsp
;
3134 if (!rdata
->pnode
|| !NLP_CHK_NODE_ACT(rdata
->pnode
))
3137 lpfc_cmd
= lpfc_get_scsi_buf(phba
);
3138 if (lpfc_cmd
== NULL
)
3140 lpfc_cmd
->timeout
= 60;
3141 lpfc_cmd
->rdata
= rdata
;
3143 status
= lpfc_scsi_prep_task_mgmt_cmd(vport
, lpfc_cmd
, lun_id
,
3146 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3150 iocbq
= &lpfc_cmd
->cur_iocbq
;
3151 iocbqrsp
= lpfc_sli_get_iocbq(phba
);
3152 if (iocbqrsp
== NULL
) {
3153 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3157 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
3158 "0702 Issue %s to TGT %d LUN %d "
3159 "rpi x%x nlp_flag x%x\n",
3160 lpfc_taskmgmt_name(task_mgmt_cmd
), tgt_id
, lun_id
,
3161 rdata
->pnode
->nlp_rpi
, rdata
->pnode
->nlp_flag
);
3163 status
= lpfc_sli_issue_iocb_wait(phba
, LPFC_FCP_RING
,
3164 iocbq
, iocbqrsp
, lpfc_cmd
->timeout
);
3165 if (status
!= IOCB_SUCCESS
) {
3166 if (status
== IOCB_TIMEDOUT
) {
3167 iocbq
->iocb_cmpl
= lpfc_tskmgmt_def_cmpl
;
3168 ret
= TIMEOUT_ERROR
;
3171 lpfc_cmd
->status
= IOSTAT_DRIVER_REJECT
;
3172 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3173 "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n",
3174 lpfc_taskmgmt_name(task_mgmt_cmd
),
3175 tgt_id
, lun_id
, iocbqrsp
->iocb
.ulpStatus
,
3176 iocbqrsp
->iocb
.un
.ulpWord
[4]);
3180 lpfc_sli_release_iocbq(phba
, iocbqrsp
);
3182 if (ret
!= TIMEOUT_ERROR
)
3183 lpfc_release_scsi_buf(phba
, lpfc_cmd
);
3189 * lpfc_chk_tgt_mapped -
3190 * @vport: The virtual port to check on
3191 * @cmnd: Pointer to scsi_cmnd data structure.
3193 * This routine delays until the scsi target (aka rport) for the
3194 * command exists (is present and logged in) or we declare it non-existent.
3201 lpfc_chk_tgt_mapped(struct lpfc_vport
*vport
, struct scsi_cmnd
*cmnd
)
3203 struct lpfc_rport_data
*rdata
= cmnd
->device
->hostdata
;
3204 struct lpfc_nodelist
*pnode
;
3205 unsigned long later
;
3208 lpfc_printf_vlog(vport
, KERN_INFO
, LOG_FCP
,
3209 "0797 Tgt Map rport failure: rdata x%p\n", rdata
);
3212 pnode
= rdata
->pnode
;
3214 * If target is not in a MAPPED state, delay until
3215 * target is rediscovered or devloss timeout expires.
3217 later
= msecs_to_jiffies(2 * vport
->cfg_devloss_tmo
* 1000) + jiffies
;
3218 while (time_after(later
, jiffies
)) {
3219 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
))
3221 if (pnode
->nlp_state
== NLP_STE_MAPPED_NODE
)
3223 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
3224 rdata
= cmnd
->device
->hostdata
;
3227 pnode
= rdata
->pnode
;
3229 if (!pnode
|| !NLP_CHK_NODE_ACT(pnode
) ||
3230 (pnode
->nlp_state
!= NLP_STE_MAPPED_NODE
))
3236 * lpfc_reset_flush_io_context -
3237 * @vport: The virtual port (scsi_host) for the flush context
3238 * @tgt_id: If aborting by Target contect - specifies the target id
3239 * @lun_id: If aborting by Lun context - specifies the lun id
3240 * @context: specifies the context level to flush at.
3242 * After a reset condition via TMF, we need to flush orphaned i/o
3243 * contexts from the adapter. This routine aborts any contexts
3244 * outstanding, then waits for their completions. The wait is
3245 * bounded by devloss_tmo though.
3252 lpfc_reset_flush_io_context(struct lpfc_vport
*vport
, uint16_t tgt_id
,
3253 uint64_t lun_id
, lpfc_ctx_cmd context
)
3255 struct lpfc_hba
*phba
= vport
->phba
;
3256 unsigned long later
;
3259 cnt
= lpfc_sli_sum_iocb(vport
, tgt_id
, lun_id
, context
);
3261 lpfc_sli_abort_iocb(vport
, &phba
->sli
.ring
[phba
->sli
.fcp_ring
],
3262 tgt_id
, lun_id
, context
);
3263 later
= msecs_to_jiffies(2 * vport
->cfg_devloss_tmo
* 1000) + jiffies
;
3264 while (time_after(later
, jiffies
) && cnt
) {
3265 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
3266 cnt
= lpfc_sli_sum_iocb(vport
, tgt_id
, lun_id
, context
);
3269 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3270 "0724 I/O flush failure for context %s : cnt x%x\n",
3271 ((context
== LPFC_CTX_LUN
) ? "LUN" :
3272 ((context
== LPFC_CTX_TGT
) ? "TGT" :
3273 ((context
== LPFC_CTX_HOST
) ? "HOST" : "Unknown"))),
3281 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
3282 * @cmnd: Pointer to scsi_cmnd data structure.
3284 * This routine does a device reset by sending a LUN_RESET task management
3292 lpfc_device_reset_handler(struct scsi_cmnd
*cmnd
)
3294 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3295 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
3296 struct lpfc_rport_data
*rdata
= cmnd
->device
->hostdata
;
3297 struct lpfc_nodelist
*pnode
;
3298 unsigned tgt_id
= cmnd
->device
->id
;
3299 unsigned int lun_id
= cmnd
->device
->lun
;
3300 struct lpfc_scsi_event_header scsi_event
;
3304 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3305 "0798 Device Reset rport failure: rdata x%p\n", rdata
);
3308 pnode
= rdata
->pnode
;
3309 fc_block_scsi_eh(cmnd
);
3311 status
= lpfc_chk_tgt_mapped(vport
, cmnd
);
3312 if (status
== FAILED
) {
3313 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3314 "0721 Device Reset rport failure: rdata x%p\n", rdata
);
3318 scsi_event
.event_type
= FC_REG_SCSI_EVENT
;
3319 scsi_event
.subcategory
= LPFC_EVENT_LUNRESET
;
3320 scsi_event
.lun
= lun_id
;
3321 memcpy(scsi_event
.wwpn
, &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
3322 memcpy(scsi_event
.wwnn
, &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
3324 fc_host_post_vendor_event(shost
, fc_get_event_number(),
3325 sizeof(scsi_event
), (char *)&scsi_event
, LPFC_NL_VENDOR_ID
);
3327 status
= lpfc_send_taskmgmt(vport
, rdata
, tgt_id
, lun_id
,
3330 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3331 "0713 SCSI layer issued Device Reset (%d, %d) "
3332 "return x%x\n", tgt_id
, lun_id
, status
);
3335 * We have to clean up i/o as : they may be orphaned by the TMF;
3336 * or if the TMF failed, they may be in an indeterminate state.
3338 * We will report success if all the i/o aborts successfully.
3340 status
= lpfc_reset_flush_io_context(vport
, tgt_id
, lun_id
,
3346 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
3347 * @cmnd: Pointer to scsi_cmnd data structure.
3349 * This routine does a target reset by sending a TARGET_RESET task management
3357 lpfc_target_reset_handler(struct scsi_cmnd
*cmnd
)
3359 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3360 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
3361 struct lpfc_rport_data
*rdata
= cmnd
->device
->hostdata
;
3362 struct lpfc_nodelist
*pnode
;
3363 unsigned tgt_id
= cmnd
->device
->id
;
3364 unsigned int lun_id
= cmnd
->device
->lun
;
3365 struct lpfc_scsi_event_header scsi_event
;
3369 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3370 "0799 Target Reset rport failure: rdata x%p\n", rdata
);
3373 pnode
= rdata
->pnode
;
3374 fc_block_scsi_eh(cmnd
);
3376 status
= lpfc_chk_tgt_mapped(vport
, cmnd
);
3377 if (status
== FAILED
) {
3378 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3379 "0722 Target Reset rport failure: rdata x%p\n", rdata
);
3383 scsi_event
.event_type
= FC_REG_SCSI_EVENT
;
3384 scsi_event
.subcategory
= LPFC_EVENT_TGTRESET
;
3386 memcpy(scsi_event
.wwpn
, &pnode
->nlp_portname
, sizeof(struct lpfc_name
));
3387 memcpy(scsi_event
.wwnn
, &pnode
->nlp_nodename
, sizeof(struct lpfc_name
));
3389 fc_host_post_vendor_event(shost
, fc_get_event_number(),
3390 sizeof(scsi_event
), (char *)&scsi_event
, LPFC_NL_VENDOR_ID
);
3392 status
= lpfc_send_taskmgmt(vport
, rdata
, tgt_id
, lun_id
,
3395 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3396 "0723 SCSI layer issued Target Reset (%d, %d) "
3397 "return x%x\n", tgt_id
, lun_id
, status
);
3400 * We have to clean up i/o as : they may be orphaned by the TMF;
3401 * or if the TMF failed, they may be in an indeterminate state.
3403 * We will report success if all the i/o aborts successfully.
3405 status
= lpfc_reset_flush_io_context(vport
, tgt_id
, lun_id
,
3411 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
3412 * @cmnd: Pointer to scsi_cmnd data structure.
3414 * This routine does target reset to all targets on @cmnd->device->host.
3415 * This emulates Parallel SCSI Bus Reset Semantics.
3422 lpfc_bus_reset_handler(struct scsi_cmnd
*cmnd
)
3424 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3425 struct lpfc_vport
*vport
= (struct lpfc_vport
*) shost
->hostdata
;
3426 struct lpfc_nodelist
*ndlp
= NULL
;
3427 struct lpfc_scsi_event_header scsi_event
;
3429 int ret
= SUCCESS
, status
, i
;
3431 scsi_event
.event_type
= FC_REG_SCSI_EVENT
;
3432 scsi_event
.subcategory
= LPFC_EVENT_BUSRESET
;
3434 memcpy(scsi_event
.wwpn
, &vport
->fc_portname
, sizeof(struct lpfc_name
));
3435 memcpy(scsi_event
.wwnn
, &vport
->fc_nodename
, sizeof(struct lpfc_name
));
3437 fc_host_post_vendor_event(shost
, fc_get_event_number(),
3438 sizeof(scsi_event
), (char *)&scsi_event
, LPFC_NL_VENDOR_ID
);
3440 fc_block_scsi_eh(cmnd
);
3443 * Since the driver manages a single bus device, reset all
3444 * targets known to the driver. Should any target reset
3445 * fail, this routine returns failure to the midlayer.
3447 for (i
= 0; i
< LPFC_MAX_TARGET
; i
++) {
3448 /* Search for mapped node by target ID */
3450 spin_lock_irq(shost
->host_lock
);
3451 list_for_each_entry(ndlp
, &vport
->fc_nodes
, nlp_listp
) {
3452 if (!NLP_CHK_NODE_ACT(ndlp
))
3454 if (ndlp
->nlp_state
== NLP_STE_MAPPED_NODE
&&
3455 ndlp
->nlp_sid
== i
&&
3461 spin_unlock_irq(shost
->host_lock
);
3465 status
= lpfc_send_taskmgmt(vport
, ndlp
->rport
->dd_data
,
3466 i
, 0, FCP_TARGET_RESET
);
3468 if (status
!= SUCCESS
) {
3469 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3470 "0700 Bus Reset on target %d failed\n",
3476 * We have to clean up i/o as : they may be orphaned by the TMFs
3477 * above; or if any of the TMFs failed, they may be in an
3478 * indeterminate state.
3479 * We will report success if all the i/o aborts successfully.
3482 status
= lpfc_reset_flush_io_context(vport
, 0, 0, LPFC_CTX_HOST
);
3483 if (status
!= SUCCESS
)
3486 lpfc_printf_vlog(vport
, KERN_ERR
, LOG_FCP
,
3487 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret
);
3492 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
3493 * @sdev: Pointer to scsi_device.
3495 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
3496 * globally available list of scsi buffers. This routine also makes sure scsi
3497 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
3498 * of scsi buffer exists for the lifetime of the driver.
3505 lpfc_slave_alloc(struct scsi_device
*sdev
)
3507 struct lpfc_vport
*vport
= (struct lpfc_vport
*) sdev
->host
->hostdata
;
3508 struct lpfc_hba
*phba
= vport
->phba
;
3509 struct fc_rport
*rport
= starget_to_rport(scsi_target(sdev
));
3511 uint32_t num_to_alloc
= 0;
3512 int num_allocated
= 0;
3514 if (!rport
|| fc_remote_port_chkready(rport
))
3517 sdev
->hostdata
= rport
->dd_data
;
3520 * Populate the cmds_per_lun count scsi_bufs into this host's globally
3521 * available list of scsi buffers. Don't allocate more than the
3522 * HBA limit conveyed to the midlayer via the host structure. The
3523 * formula accounts for the lun_queue_depth + error handlers + 1
3524 * extra. This list of scsi bufs exists for the lifetime of the driver.
3526 total
= phba
->total_scsi_bufs
;
3527 num_to_alloc
= vport
->cfg_lun_queue_depth
+ 2;
3529 /* Allow some exchanges to be available always to complete discovery */
3530 if (total
>= phba
->cfg_hba_queue_depth
- LPFC_DISC_IOCB_BUFF_COUNT
) {
3531 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3532 "0704 At limitation of %d preallocated "
3533 "command buffers\n", total
);
3535 /* Allow some exchanges to be available always to complete discovery */
3536 } else if (total
+ num_to_alloc
>
3537 phba
->cfg_hba_queue_depth
- LPFC_DISC_IOCB_BUFF_COUNT
) {
3538 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3539 "0705 Allocation request of %d "
3540 "command buffers will exceed max of %d. "
3541 "Reducing allocation request to %d.\n",
3542 num_to_alloc
, phba
->cfg_hba_queue_depth
,
3543 (phba
->cfg_hba_queue_depth
- total
));
3544 num_to_alloc
= phba
->cfg_hba_queue_depth
- total
;
3546 num_allocated
= lpfc_new_scsi_buf(vport
, num_to_alloc
);
3547 if (num_to_alloc
!= num_allocated
) {
3548 lpfc_printf_vlog(vport
, KERN_WARNING
, LOG_FCP
,
3549 "0708 Allocation request of %d "
3550 "command buffers did not succeed. "
3551 "Allocated %d buffers.\n",
3552 num_to_alloc
, num_allocated
);
3554 if (num_allocated
> 0)
3555 phba
->total_scsi_bufs
+= num_allocated
;
3560 * lpfc_slave_configure - scsi_host_template slave_configure entry point
3561 * @sdev: Pointer to scsi_device.
3563 * This routine configures following items
3564 * - Tag command queuing support for @sdev if supported.
3565 * - Dev loss time out value of fc_rport.
3566 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
3572 lpfc_slave_configure(struct scsi_device
*sdev
)
3574 struct lpfc_vport
*vport
= (struct lpfc_vport
*) sdev
->host
->hostdata
;
3575 struct lpfc_hba
*phba
= vport
->phba
;
3576 struct fc_rport
*rport
= starget_to_rport(sdev
->sdev_target
);
3578 if (sdev
->tagged_supported
)
3579 scsi_activate_tcq(sdev
, vport
->cfg_lun_queue_depth
);
3581 scsi_deactivate_tcq(sdev
, vport
->cfg_lun_queue_depth
);
3584 * Initialize the fc transport attributes for the target
3585 * containing this scsi device. Also note that the driver's
3586 * target pointer is stored in the starget_data for the
3587 * driver's sysfs entry point functions.
3589 rport
->dev_loss_tmo
= vport
->cfg_devloss_tmo
;
3591 if (phba
->cfg_poll
& ENABLE_FCP_RING_POLLING
) {
3592 lpfc_sli_handle_fast_ring_event(phba
,
3593 &phba
->sli
.ring
[LPFC_FCP_RING
], HA_R0RE_REQ
);
3594 if (phba
->cfg_poll
& DISABLE_FCP_RING_INT
)
3595 lpfc_poll_rearm_timer(phba
);
3602 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
3603 * @sdev: Pointer to scsi_device.
3605 * This routine sets @sdev hostatdata filed to null.
3608 lpfc_slave_destroy(struct scsi_device
*sdev
)
3610 sdev
->hostdata
= NULL
;
3615 struct scsi_host_template lpfc_template
= {
3616 .module
= THIS_MODULE
,
3617 .name
= LPFC_DRIVER_NAME
,
3619 .queuecommand
= lpfc_queuecommand
,
3620 .eh_abort_handler
= lpfc_abort_handler
,
3621 .eh_device_reset_handler
= lpfc_device_reset_handler
,
3622 .eh_target_reset_handler
= lpfc_target_reset_handler
,
3623 .eh_bus_reset_handler
= lpfc_bus_reset_handler
,
3624 .slave_alloc
= lpfc_slave_alloc
,
3625 .slave_configure
= lpfc_slave_configure
,
3626 .slave_destroy
= lpfc_slave_destroy
,
3627 .scan_finished
= lpfc_scan_finished
,
3629 .sg_tablesize
= LPFC_DEFAULT_SG_SEG_CNT
,
3630 .cmd_per_lun
= LPFC_CMD_PER_LUN
,
3631 .use_clustering
= ENABLE_CLUSTERING
,
3632 .shost_attrs
= lpfc_hba_attrs
,
3633 .max_sectors
= 0xFFFF,
3634 .vendor_id
= LPFC_NL_VENDOR_ID
,
3635 .change_queue_depth
= lpfc_change_queue_depth
,
3638 struct scsi_host_template lpfc_vport_template
= {
3639 .module
= THIS_MODULE
,
3640 .name
= LPFC_DRIVER_NAME
,
3642 .queuecommand
= lpfc_queuecommand
,
3643 .eh_abort_handler
= lpfc_abort_handler
,
3644 .eh_device_reset_handler
= lpfc_device_reset_handler
,
3645 .eh_target_reset_handler
= lpfc_target_reset_handler
,
3646 .eh_bus_reset_handler
= lpfc_bus_reset_handler
,
3647 .slave_alloc
= lpfc_slave_alloc
,
3648 .slave_configure
= lpfc_slave_configure
,
3649 .slave_destroy
= lpfc_slave_destroy
,
3650 .scan_finished
= lpfc_scan_finished
,
3652 .sg_tablesize
= LPFC_DEFAULT_SG_SEG_CNT
,
3653 .cmd_per_lun
= LPFC_CMD_PER_LUN
,
3654 .use_clustering
= ENABLE_CLUSTERING
,
3655 .shost_attrs
= lpfc_vport_attrs
,
3656 .max_sectors
= 0xFFFF,
3657 .change_queue_depth
= lpfc_change_queue_depth
,