1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26 #include <linux/export.h>
27 #include <linux/delay.h>
28 #include <asm/unaligned.h>
29 #include <linux/t10-pi.h>
30 #include <linux/crc-t10dif.h>
31 #include <net/checksum.h>
33 #include <scsi/scsi.h>
34 #include <scsi/scsi_device.h>
35 #include <scsi/scsi_eh.h>
36 #include <scsi/scsi_host.h>
37 #include <scsi/scsi_tcq.h>
38 #include <scsi/scsi_transport_fc.h>
40 #include "lpfc_version.h"
44 #include "lpfc_sli4.h"
46 #include "lpfc_disc.h"
48 #include "lpfc_scsi.h"
49 #include "lpfc_logmsg.h"
50 #include "lpfc_crtn.h"
51 #include "lpfc_vport.h"
53 #define LPFC_RESET_WAIT 2
54 #define LPFC_ABORT_WAIT 2
56 int _dump_buf_done = 1;
58 static char *dif_op_str[] = {
68 struct scsi_dif_tuple {
69 __be16 guard_tag; /* Checksum */
70 __be16 app_tag; /* Opaque storage */
71 __be32 ref_tag; /* Target LBA or indirect LBA */
74 static struct lpfc_rport_data *
75 lpfc_rport_data_from_scsi_device(struct scsi_device *sdev)
77 struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata;
79 if (vport->phba->cfg_fof)
80 return ((struct lpfc_device_data *)sdev->hostdata)->rport_data;
82 return (struct lpfc_rport_data *)sdev->hostdata;
86 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
88 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
90 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
93 lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
96 struct scatterlist *sgde = scsi_sglist(cmnd);
98 if (!_dump_buf_data) {
99 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
100 "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
107 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
108 "9051 BLKGRD: ERROR: data scatterlist is null\n");
112 dst = (void *) _dump_buf_data;
115 memcpy(dst, src, sgde->length);
117 sgde = sg_next(sgde);
122 lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
125 struct scatterlist *sgde = scsi_prot_sglist(cmnd);
127 if (!_dump_buf_dif) {
128 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
129 "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
135 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
136 "9053 BLKGRD: ERROR: prot scatterlist is null\n");
143 memcpy(dst, src, sgde->length);
145 sgde = sg_next(sgde);
149 static inline unsigned
150 lpfc_cmd_blksize(struct scsi_cmnd *sc)
152 return sc->device->sector_size;
155 #define LPFC_CHECK_PROTECT_GUARD 1
156 #define LPFC_CHECK_PROTECT_REF 2
157 static inline unsigned
158 lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
163 static inline unsigned
164 lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
166 if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
168 if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
174 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
175 * @phba: Pointer to HBA object.
176 * @lpfc_cmd: lpfc scsi command object pointer.
178 * This function is called from the lpfc_prep_task_mgmt_cmd function to
179 * set the last bit in the response sge entry.
182 lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
183 struct lpfc_scsi_buf *lpfc_cmd)
185 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
188 sgl->word2 = le32_to_cpu(sgl->word2);
189 bf_set(lpfc_sli4_sge_last, sgl, 1);
190 sgl->word2 = cpu_to_le32(sgl->word2);
195 * lpfc_update_stats - Update statistical data for the command completion
196 * @phba: Pointer to HBA object.
197 * @lpfc_cmd: lpfc scsi command object pointer.
199 * This function is called when there is a command completion and this
200 * function updates the statistical data for the command completion.
203 lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
205 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
206 struct lpfc_nodelist *pnode = rdata->pnode;
207 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
209 struct Scsi_Host *shost = cmd->device->host;
210 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
211 unsigned long latency;
217 latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
219 spin_lock_irqsave(shost->host_lock, flags);
220 if (!vport->stat_data_enabled ||
221 vport->stat_data_blocked ||
224 (phba->bucket_type == LPFC_NO_BUCKET)) {
225 spin_unlock_irqrestore(shost->host_lock, flags);
229 if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
230 i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
232 /* check array subscript bounds */
235 else if (i >= LPFC_MAX_BUCKET_COUNT)
236 i = LPFC_MAX_BUCKET_COUNT - 1;
238 for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
239 if (latency <= (phba->bucket_base +
240 ((1<<i)*phba->bucket_step)))
244 pnode->lat_data[i].cmd_count++;
245 spin_unlock_irqrestore(shost->host_lock, flags);
249 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
250 * @phba: The Hba for which this call is being executed.
252 * This routine is called when there is resource error in driver or firmware.
253 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
254 * posts at most 1 event each second. This routine wakes up worker thread of
255 * @phba to process WORKER_RAM_DOWN_EVENT event.
257 * This routine should be called with no lock held.
260 lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
264 unsigned long expires;
266 spin_lock_irqsave(&phba->hbalock, flags);
267 atomic_inc(&phba->num_rsrc_err);
268 phba->last_rsrc_error_time = jiffies;
270 expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL;
271 if (time_after(expires, jiffies)) {
272 spin_unlock_irqrestore(&phba->hbalock, flags);
276 phba->last_ramp_down_time = jiffies;
278 spin_unlock_irqrestore(&phba->hbalock, flags);
280 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
281 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
283 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
284 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
287 lpfc_worker_wake_up(phba);
292 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
293 * @phba: The Hba for which this call is being executed.
295 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
296 * thread.This routine reduces queue depth for all scsi device on each vport
297 * associated with @phba.
300 lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
302 struct lpfc_vport **vports;
303 struct Scsi_Host *shost;
304 struct scsi_device *sdev;
305 unsigned long new_queue_depth;
306 unsigned long num_rsrc_err, num_cmd_success;
309 num_rsrc_err = atomic_read(&phba->num_rsrc_err);
310 num_cmd_success = atomic_read(&phba->num_cmd_success);
313 * The error and success command counters are global per
314 * driver instance. If another handler has already
315 * operated on this error event, just exit.
317 if (num_rsrc_err == 0)
320 vports = lpfc_create_vport_work_array(phba);
322 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
323 shost = lpfc_shost_from_vport(vports[i]);
324 shost_for_each_device(sdev, shost) {
326 sdev->queue_depth * num_rsrc_err /
327 (num_rsrc_err + num_cmd_success);
328 if (!new_queue_depth)
329 new_queue_depth = sdev->queue_depth - 1;
331 new_queue_depth = sdev->queue_depth -
333 scsi_change_queue_depth(sdev, new_queue_depth);
336 lpfc_destroy_vport_work_array(phba, vports);
337 atomic_set(&phba->num_rsrc_err, 0);
338 atomic_set(&phba->num_cmd_success, 0);
342 * lpfc_scsi_dev_block - set all scsi hosts to block state
343 * @phba: Pointer to HBA context object.
345 * This function walks vport list and set each SCSI host to block state
346 * by invoking fc_remote_port_delete() routine. This function is invoked
347 * with EEH when device's PCI slot has been permanently disabled.
350 lpfc_scsi_dev_block(struct lpfc_hba *phba)
352 struct lpfc_vport **vports;
353 struct Scsi_Host *shost;
354 struct scsi_device *sdev;
355 struct fc_rport *rport;
358 vports = lpfc_create_vport_work_array(phba);
360 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
361 shost = lpfc_shost_from_vport(vports[i]);
362 shost_for_each_device(sdev, shost) {
363 rport = starget_to_rport(scsi_target(sdev));
364 fc_remote_port_delete(rport);
367 lpfc_destroy_vport_work_array(phba, vports);
371 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
372 * @vport: The virtual port for which this call being executed.
373 * @num_to_allocate: The requested number of buffers to allocate.
375 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
376 * the scsi buffer contains all the necessary information needed to initiate
377 * a SCSI I/O. The non-DMAable buffer region contains information to build
378 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
379 * and the initial BPL. In addition to allocating memory, the FCP CMND and
380 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
383 * int - number of scsi buffers that were allocated.
384 * 0 = failure, less than num_to_alloc is a partial failure.
387 lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
389 struct lpfc_hba *phba = vport->phba;
390 struct lpfc_scsi_buf *psb;
391 struct ulp_bde64 *bpl;
393 dma_addr_t pdma_phys_fcp_cmd;
394 dma_addr_t pdma_phys_fcp_rsp;
395 dma_addr_t pdma_phys_bpl;
399 bpl_size = phba->cfg_sg_dma_buf_size -
400 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
402 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
403 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
404 num_to_alloc, phba->cfg_sg_dma_buf_size,
405 (int)sizeof(struct fcp_cmnd),
406 (int)sizeof(struct fcp_rsp), bpl_size);
408 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
409 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
414 * Get memory from the pci pool to map the virt space to pci
415 * bus space for an I/O. The DMA buffer includes space for the
416 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
417 * necessary to support the sg_tablesize.
419 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
420 GFP_KERNEL, &psb->dma_handle);
427 /* Allocate iotag for psb->cur_iocbq. */
428 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
430 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
431 psb->data, psb->dma_handle);
435 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
437 psb->fcp_cmnd = psb->data;
438 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
439 psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
440 sizeof(struct fcp_rsp);
442 /* Initialize local short-hand pointers. */
444 pdma_phys_fcp_cmd = psb->dma_handle;
445 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
446 pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
447 sizeof(struct fcp_rsp);
450 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
451 * are sg list bdes. Initialize the first two and leave the
452 * rest for queuecommand.
454 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
455 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
456 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
457 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
458 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
460 /* Setup the physical region for the FCP RSP */
461 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
462 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
463 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
464 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
465 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
468 * Since the IOCB for the FCP I/O is built into this
469 * lpfc_scsi_buf, initialize it with all known data now.
471 iocb = &psb->cur_iocbq.iocb;
472 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
473 if ((phba->sli_rev == 3) &&
474 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
475 /* fill in immediate fcp command BDE */
476 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
477 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
478 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
480 iocb->un.fcpi64.bdl.addrHigh = 0;
481 iocb->ulpBdeCount = 0;
483 /* fill in response BDE */
484 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
486 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
487 sizeof(struct fcp_rsp);
488 iocb->unsli3.fcp_ext.rbde.addrLow =
489 putPaddrLow(pdma_phys_fcp_rsp);
490 iocb->unsli3.fcp_ext.rbde.addrHigh =
491 putPaddrHigh(pdma_phys_fcp_rsp);
493 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
494 iocb->un.fcpi64.bdl.bdeSize =
495 (2 * sizeof(struct ulp_bde64));
496 iocb->un.fcpi64.bdl.addrLow =
497 putPaddrLow(pdma_phys_bpl);
498 iocb->un.fcpi64.bdl.addrHigh =
499 putPaddrHigh(pdma_phys_bpl);
500 iocb->ulpBdeCount = 1;
503 iocb->ulpClass = CLASS3;
504 psb->status = IOSTAT_SUCCESS;
505 /* Put it back into the SCSI buffer list */
506 psb->cur_iocbq.context1 = psb;
507 lpfc_release_scsi_buf_s3(phba, psb);
515 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
516 * @vport: pointer to lpfc vport data structure.
518 * This routine is invoked by the vport cleanup for deletions and the cleanup
519 * for an ndlp on removal.
522 lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
524 struct lpfc_hba *phba = vport->phba;
525 struct lpfc_scsi_buf *psb, *next_psb;
526 unsigned long iflag = 0;
528 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
530 spin_lock_irqsave(&phba->hbalock, iflag);
531 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
532 list_for_each_entry_safe(psb, next_psb,
533 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
534 if (psb->rdata && psb->rdata->pnode
535 && psb->rdata->pnode->vport == vport)
538 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
539 spin_unlock_irqrestore(&phba->hbalock, iflag);
543 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
544 * @phba: pointer to lpfc hba data structure.
545 * @axri: pointer to the fcp xri abort wcqe structure.
547 * This routine is invoked by the worker thread to process a SLI4 fast-path
551 lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
552 struct sli4_wcqe_xri_aborted *axri)
554 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
555 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
556 struct lpfc_scsi_buf *psb, *next_psb;
557 unsigned long iflag = 0;
558 struct lpfc_iocbq *iocbq;
560 struct lpfc_nodelist *ndlp;
562 struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring;
564 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
566 spin_lock_irqsave(&phba->hbalock, iflag);
567 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
568 list_for_each_entry_safe(psb, next_psb,
569 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
570 if (psb->cur_iocbq.sli4_xritag == xri) {
571 list_del(&psb->list);
573 psb->status = IOSTAT_SUCCESS;
575 &phba->sli4_hba.abts_scsi_buf_list_lock);
576 if (psb->rdata && psb->rdata->pnode)
577 ndlp = psb->rdata->pnode;
581 rrq_empty = list_empty(&phba->active_rrq_list);
582 spin_unlock_irqrestore(&phba->hbalock, iflag);
584 lpfc_set_rrq_active(phba, ndlp,
585 psb->cur_iocbq.sli4_lxritag, rxid, 1);
586 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
588 lpfc_release_scsi_buf_s4(phba, psb);
590 lpfc_worker_wake_up(phba);
594 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
595 for (i = 1; i <= phba->sli.last_iotag; i++) {
596 iocbq = phba->sli.iocbq_lookup[i];
598 if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
599 (iocbq->iocb_flag & LPFC_IO_LIBDFC))
601 if (iocbq->sli4_xritag != xri)
603 psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
605 spin_unlock_irqrestore(&phba->hbalock, iflag);
606 if (!list_empty(&pring->txq))
607 lpfc_worker_wake_up(phba);
611 spin_unlock_irqrestore(&phba->hbalock, iflag);
615 * lpfc_sli4_post_scsi_sgl_list - Post blocks of scsi buffer sgls from a list
616 * @phba: pointer to lpfc hba data structure.
617 * @post_sblist: pointer to the scsi buffer list.
619 * This routine walks a list of scsi buffers that was passed in. It attempts
620 * to construct blocks of scsi buffer sgls which contains contiguous xris and
621 * uses the non-embedded SGL block post mailbox commands to post to the port.
622 * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use
623 * embedded SGL post mailbox command for posting. The @post_sblist passed in
624 * must be local list, thus no lock is needed when manipulate the list.
626 * Returns: 0 = failure, non-zero number of successfully posted buffers.
629 lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba,
630 struct list_head *post_sblist, int sb_count)
632 struct lpfc_scsi_buf *psb, *psb_next;
633 int status, sgl_size;
634 int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
635 dma_addr_t pdma_phys_bpl1;
636 int last_xritag = NO_XRI;
637 LIST_HEAD(prep_sblist);
638 LIST_HEAD(blck_sblist);
639 LIST_HEAD(scsi_sblist);
645 sgl_size = phba->cfg_sg_dma_buf_size -
646 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
648 list_for_each_entry_safe(psb, psb_next, post_sblist, list) {
649 list_del_init(&psb->list);
651 if ((last_xritag != NO_XRI) &&
652 (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) {
653 /* a hole in xri block, form a sgl posting block */
654 list_splice_init(&prep_sblist, &blck_sblist);
655 post_cnt = block_cnt - 1;
656 /* prepare list for next posting block */
657 list_add_tail(&psb->list, &prep_sblist);
660 /* prepare list for next posting block */
661 list_add_tail(&psb->list, &prep_sblist);
662 /* enough sgls for non-embed sgl mbox command */
663 if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
664 list_splice_init(&prep_sblist, &blck_sblist);
665 post_cnt = block_cnt;
670 last_xritag = psb->cur_iocbq.sli4_xritag;
672 /* end of repost sgl list condition for SCSI buffers */
673 if (num_posting == sb_count) {
675 /* last sgl posting block */
676 list_splice_init(&prep_sblist, &blck_sblist);
677 post_cnt = block_cnt;
678 } else if (block_cnt == 1) {
679 /* last single sgl with non-contiguous xri */
680 if (sgl_size > SGL_PAGE_SIZE)
681 pdma_phys_bpl1 = psb->dma_phys_bpl +
685 status = lpfc_sli4_post_sgl(phba,
688 psb->cur_iocbq.sli4_xritag);
690 /* failure, put on abort scsi list */
693 /* success, put on SCSI buffer list */
695 psb->status = IOSTAT_SUCCESS;
698 /* success, put on SCSI buffer sgl list */
699 list_add_tail(&psb->list, &scsi_sblist);
703 /* continue until a nembed page worth of sgls */
707 /* post block of SCSI buffer list sgls */
708 status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist,
711 /* don't reset xirtag due to hole in xri block */
713 last_xritag = NO_XRI;
715 /* reset SCSI buffer post count for next round of posting */
718 /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */
719 while (!list_empty(&blck_sblist)) {
720 list_remove_head(&blck_sblist, psb,
721 struct lpfc_scsi_buf, list);
723 /* failure, put on abort scsi list */
726 /* success, put on SCSI buffer list */
728 psb->status = IOSTAT_SUCCESS;
731 list_add_tail(&psb->list, &scsi_sblist);
734 /* Push SCSI buffers with sgl posted to the availble list */
735 while (!list_empty(&scsi_sblist)) {
736 list_remove_head(&scsi_sblist, psb,
737 struct lpfc_scsi_buf, list);
738 lpfc_release_scsi_buf_s4(phba, psb);
744 * lpfc_sli4_repost_scsi_sgl_list - Repost all the allocated scsi buffer sgls
745 * @phba: pointer to lpfc hba data structure.
747 * This routine walks the list of scsi buffers that have been allocated and
748 * repost them to the port by using SGL block post. This is needed after a
749 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
750 * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
751 * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
753 * Returns: 0 = success, non-zero failure.
756 lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
758 LIST_HEAD(post_sblist);
759 int num_posted, rc = 0;
761 /* get all SCSI buffers need to repost to a local list */
762 spin_lock_irq(&phba->scsi_buf_list_get_lock);
763 spin_lock(&phba->scsi_buf_list_put_lock);
764 list_splice_init(&phba->lpfc_scsi_buf_list_get, &post_sblist);
765 list_splice(&phba->lpfc_scsi_buf_list_put, &post_sblist);
766 spin_unlock(&phba->scsi_buf_list_put_lock);
767 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
769 /* post the list of scsi buffer sgls to port if available */
770 if (!list_empty(&post_sblist)) {
771 num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist,
772 phba->sli4_hba.scsi_xri_cnt);
773 /* failed to post any scsi buffer, return error */
781 * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
782 * @vport: The virtual port for which this call being executed.
783 * @num_to_allocate: The requested number of buffers to allocate.
785 * This routine allocates scsi buffers for device with SLI-4 interface spec,
786 * the scsi buffer contains all the necessary information needed to initiate
787 * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put
788 * them on a list, it post them to the port by using SGL block post.
791 * int - number of scsi buffers that were allocated and posted.
792 * 0 = failure, less than num_to_alloc is a partial failure.
795 lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
797 struct lpfc_hba *phba = vport->phba;
798 struct lpfc_scsi_buf *psb;
799 struct sli4_sge *sgl;
801 dma_addr_t pdma_phys_fcp_cmd;
802 dma_addr_t pdma_phys_fcp_rsp;
803 dma_addr_t pdma_phys_bpl;
804 uint16_t iotag, lxri = 0;
805 int bcnt, num_posted, sgl_size;
806 LIST_HEAD(prep_sblist);
807 LIST_HEAD(post_sblist);
808 LIST_HEAD(scsi_sblist);
810 sgl_size = phba->cfg_sg_dma_buf_size -
811 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
813 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
814 "9068 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
815 num_to_alloc, phba->cfg_sg_dma_buf_size, sgl_size,
816 (int)sizeof(struct fcp_cmnd),
817 (int)sizeof(struct fcp_rsp));
819 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
820 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
824 * Get memory from the pci pool to map the virt space to
825 * pci bus space for an I/O. The DMA buffer includes space
826 * for the struct fcp_cmnd, struct fcp_rsp and the number
827 * of bde's necessary to support the sg_tablesize.
829 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
830 GFP_KERNEL, &psb->dma_handle);
837 * 4K Page alignment is CRITICAL to BlockGuard, double check
840 if (phba->cfg_enable_bg && (((unsigned long)(psb->data) &
841 (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
842 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
843 psb->data, psb->dma_handle);
849 lxri = lpfc_sli4_next_xritag(phba);
850 if (lxri == NO_XRI) {
851 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
852 psb->data, psb->dma_handle);
857 /* Allocate iotag for psb->cur_iocbq. */
858 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
860 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
861 psb->data, psb->dma_handle);
863 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
864 "3368 Failed to allocate IOTAG for"
865 " XRI:0x%x\n", lxri);
866 lpfc_sli4_free_xri(phba, lxri);
869 psb->cur_iocbq.sli4_lxritag = lxri;
870 psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
871 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
872 psb->fcp_bpl = psb->data;
873 psb->fcp_cmnd = (psb->data + sgl_size);
874 psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd +
875 sizeof(struct fcp_cmnd));
877 /* Initialize local short-hand pointers. */
878 sgl = (struct sli4_sge *)psb->fcp_bpl;
879 pdma_phys_bpl = psb->dma_handle;
880 pdma_phys_fcp_cmd = (psb->dma_handle + sgl_size);
881 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
884 * The first two bdes are the FCP_CMD and FCP_RSP.
885 * The balance are sg list bdes. Initialize the
886 * first two and leave the rest for queuecommand.
888 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
889 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
890 sgl->word2 = le32_to_cpu(sgl->word2);
891 bf_set(lpfc_sli4_sge_last, sgl, 0);
892 sgl->word2 = cpu_to_le32(sgl->word2);
893 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
896 /* Setup the physical region for the FCP RSP */
897 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
898 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
899 sgl->word2 = le32_to_cpu(sgl->word2);
900 bf_set(lpfc_sli4_sge_last, sgl, 1);
901 sgl->word2 = cpu_to_le32(sgl->word2);
902 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
905 * Since the IOCB for the FCP I/O is built into this
906 * lpfc_scsi_buf, initialize it with all known data now.
908 iocb = &psb->cur_iocbq.iocb;
909 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
910 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
911 /* setting the BLP size to 2 * sizeof BDE may not be correct.
912 * We are setting the bpl to point to out sgl. An sgl's
913 * entries are 16 bytes, a bpl entries are 12 bytes.
915 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
916 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
917 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
918 iocb->ulpBdeCount = 1;
920 iocb->ulpClass = CLASS3;
921 psb->cur_iocbq.context1 = psb;
922 psb->dma_phys_bpl = pdma_phys_bpl;
924 /* add the scsi buffer to a post list */
925 list_add_tail(&psb->list, &post_sblist);
926 spin_lock_irq(&phba->scsi_buf_list_get_lock);
927 phba->sli4_hba.scsi_xri_cnt++;
928 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
930 lpfc_printf_log(phba, KERN_INFO, LOG_BG | LOG_FCP,
931 "3021 Allocate %d out of %d requested new SCSI "
932 "buffers\n", bcnt, num_to_alloc);
934 /* post the list of scsi buffer sgls to port if available */
935 if (!list_empty(&post_sblist))
936 num_posted = lpfc_sli4_post_scsi_sgl_list(phba,
945 * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
946 * @vport: The virtual port for which this call being executed.
947 * @num_to_allocate: The requested number of buffers to allocate.
949 * This routine wraps the actual SCSI buffer allocator function pointer from
950 * the lpfc_hba struct.
953 * int - number of scsi buffers that were allocated.
954 * 0 = failure, less than num_to_alloc is a partial failure.
957 lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
959 return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc);
963 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
964 * @phba: The HBA for which this call is being executed.
966 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
967 * and returns to caller.
971 * Pointer to lpfc_scsi_buf - Success
973 static struct lpfc_scsi_buf*
974 lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
976 struct lpfc_scsi_buf * lpfc_cmd = NULL;
977 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
978 unsigned long iflag = 0;
980 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
981 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_scsi_buf,
984 spin_lock(&phba->scsi_buf_list_put_lock);
985 list_splice(&phba->lpfc_scsi_buf_list_put,
986 &phba->lpfc_scsi_buf_list_get);
987 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
988 list_remove_head(scsi_buf_list_get, lpfc_cmd,
989 struct lpfc_scsi_buf, list);
990 spin_unlock(&phba->scsi_buf_list_put_lock);
992 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
996 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
997 * @phba: The HBA for which this call is being executed.
999 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1000 * and returns to caller.
1004 * Pointer to lpfc_scsi_buf - Success
1006 static struct lpfc_scsi_buf*
1007 lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1009 struct lpfc_scsi_buf *lpfc_cmd, *lpfc_cmd_next;
1010 unsigned long iflag = 0;
1013 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
1014 list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
1015 &phba->lpfc_scsi_buf_list_get, list) {
1016 if (lpfc_test_rrq_active(phba, ndlp,
1017 lpfc_cmd->cur_iocbq.sli4_lxritag))
1019 list_del(&lpfc_cmd->list);
1024 spin_lock(&phba->scsi_buf_list_put_lock);
1025 list_splice(&phba->lpfc_scsi_buf_list_put,
1026 &phba->lpfc_scsi_buf_list_get);
1027 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
1028 spin_unlock(&phba->scsi_buf_list_put_lock);
1029 list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
1030 &phba->lpfc_scsi_buf_list_get, list) {
1031 if (lpfc_test_rrq_active(
1032 phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag))
1034 list_del(&lpfc_cmd->list);
1039 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
1045 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1046 * @phba: The HBA for which this call is being executed.
1048 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1049 * and returns to caller.
1053 * Pointer to lpfc_scsi_buf - Success
1055 static struct lpfc_scsi_buf*
1056 lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1058 return phba->lpfc_get_scsi_buf(phba, ndlp);
1062 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
1063 * @phba: The Hba for which this call is being executed.
1064 * @psb: The scsi buffer which is being released.
1066 * This routine releases @psb scsi buffer by adding it to tail of @phba
1067 * lpfc_scsi_buf_list list.
1070 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1072 unsigned long iflag = 0;
1075 psb->nonsg_phys = 0;
1076 psb->prot_seg_cnt = 0;
1078 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1080 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
1081 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1082 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
1086 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
1087 * @phba: The Hba for which this call is being executed.
1088 * @psb: The scsi buffer which is being released.
1090 * This routine releases @psb scsi buffer by adding it to tail of @phba
1091 * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer
1092 * and cannot be reused for at least RA_TOV amount of time if it was
1096 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1098 unsigned long iflag = 0;
1101 psb->nonsg_phys = 0;
1102 psb->prot_seg_cnt = 0;
1104 if (psb->exch_busy) {
1105 spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
1108 list_add_tail(&psb->list,
1109 &phba->sli4_hba.lpfc_abts_scsi_buf_list);
1110 spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
1114 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
1115 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1116 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1117 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
1122 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
1123 * @phba: The Hba for which this call is being executed.
1124 * @psb: The scsi buffer which is being released.
1126 * This routine releases @psb scsi buffer by adding it to tail of @phba
1127 * lpfc_scsi_buf_list list.
1130 lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1133 phba->lpfc_release_scsi_buf(phba, psb);
1137 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
1138 * @phba: The Hba for which this call is being executed.
1139 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1141 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
1142 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
1143 * through sg elements and format the bde. This routine also initializes all
1144 * IOCB fields which are dependent on scsi command request buffer.
1151 lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
1153 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
1154 struct scatterlist *sgel = NULL;
1155 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
1156 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
1157 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
1158 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
1159 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
1160 dma_addr_t physaddr;
1161 uint32_t num_bde = 0;
1162 int nseg, datadir = scsi_cmnd->sc_data_direction;
1165 * There are three possibilities here - use scatter-gather segment, use
1166 * the single mapping, or neither. Start the lpfc command prep by
1167 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1171 if (scsi_sg_count(scsi_cmnd)) {
1173 * The driver stores the segment count returned from pci_map_sg
1174 * because this a count of dma-mappings used to map the use_sg
1175 * pages. They are not guaranteed to be the same for those
1176 * architectures that implement an IOMMU.
1179 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
1180 scsi_sg_count(scsi_cmnd), datadir);
1181 if (unlikely(!nseg))
1184 lpfc_cmd->seg_cnt = nseg;
1185 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
1186 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1187 "9064 BLKGRD: %s: Too many sg segments from "
1188 "dma_map_sg. Config %d, seg_cnt %d\n",
1189 __func__, phba->cfg_sg_seg_cnt,
1191 lpfc_cmd->seg_cnt = 0;
1192 scsi_dma_unmap(scsi_cmnd);
1197 * The driver established a maximum scatter-gather segment count
1198 * during probe that limits the number of sg elements in any
1199 * single scsi command. Just run through the seg_cnt and format
1201 * When using SLI-3 the driver will try to fit all the BDEs into
1202 * the IOCB. If it can't then the BDEs get added to a BPL as it
1203 * does for SLI-2 mode.
1205 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
1206 physaddr = sg_dma_address(sgel);
1207 if (phba->sli_rev == 3 &&
1208 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
1209 !(iocbq->iocb_flag & DSS_SECURITY_OP) &&
1210 nseg <= LPFC_EXT_DATA_BDE_COUNT) {
1211 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1212 data_bde->tus.f.bdeSize = sg_dma_len(sgel);
1213 data_bde->addrLow = putPaddrLow(physaddr);
1214 data_bde->addrHigh = putPaddrHigh(physaddr);
1217 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1218 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1219 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1221 le32_to_cpu(putPaddrLow(physaddr));
1223 le32_to_cpu(putPaddrHigh(physaddr));
1230 * Finish initializing those IOCB fields that are dependent on the
1231 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1232 * explicitly reinitialized and for SLI-3 the extended bde count is
1233 * explicitly reinitialized since all iocb memory resources are reused.
1235 if (phba->sli_rev == 3 &&
1236 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
1237 !(iocbq->iocb_flag & DSS_SECURITY_OP)) {
1238 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
1240 * The extended IOCB format can only fit 3 BDE or a BPL.
1241 * This I/O has more than 3 BDE so the 1st data bde will
1242 * be a BPL that is filled in here.
1244 physaddr = lpfc_cmd->dma_handle;
1245 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
1246 data_bde->tus.f.bdeSize = (num_bde *
1247 sizeof(struct ulp_bde64));
1248 physaddr += (sizeof(struct fcp_cmnd) +
1249 sizeof(struct fcp_rsp) +
1250 (2 * sizeof(struct ulp_bde64)));
1251 data_bde->addrHigh = putPaddrHigh(physaddr);
1252 data_bde->addrLow = putPaddrLow(physaddr);
1253 /* ebde count includes the response bde and data bpl */
1254 iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
1256 /* ebde count includes the response bde and data bdes */
1257 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
1260 iocb_cmd->un.fcpi64.bdl.bdeSize =
1261 ((num_bde + 2) * sizeof(struct ulp_bde64));
1262 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
1264 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
1267 * Due to difference in data length between DIF/non-DIF paths,
1268 * we need to set word 4 of IOCB here
1270 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
1274 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1276 /* Return BG_ERR_INIT if error injection is detected by Initiator */
1277 #define BG_ERR_INIT 0x1
1278 /* Return BG_ERR_TGT if error injection is detected by Target */
1279 #define BG_ERR_TGT 0x2
1280 /* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */
1281 #define BG_ERR_SWAP 0x10
1283 * Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for
1286 #define BG_ERR_CHECK 0x20
1289 * lpfc_bg_err_inject - Determine if we should inject an error
1290 * @phba: The Hba for which this call is being executed.
1291 * @sc: The SCSI command to examine
1292 * @reftag: (out) BlockGuard reference tag for transmitted data
1293 * @apptag: (out) BlockGuard application tag for transmitted data
1294 * @new_guard (in) Value to replace CRC with if needed
1296 * Returns BG_ERR_* bit mask or 0 if request ignored
1299 lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1300 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
1302 struct scatterlist *sgpe; /* s/g prot entry */
1303 struct lpfc_scsi_buf *lpfc_cmd = NULL;
1304 struct scsi_dif_tuple *src = NULL;
1305 struct lpfc_nodelist *ndlp;
1306 struct lpfc_rport_data *rdata;
1307 uint32_t op = scsi_get_prot_op(sc);
1314 if (op == SCSI_PROT_NORMAL)
1317 sgpe = scsi_prot_sglist(sc);
1318 lba = scsi_get_lba(sc);
1320 /* First check if we need to match the LBA */
1321 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
1322 blksize = lpfc_cmd_blksize(sc);
1323 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
1325 /* Make sure we have the right LBA if one is specified */
1326 if ((phba->lpfc_injerr_lba < lba) ||
1327 (phba->lpfc_injerr_lba >= (lba + numblks)))
1330 blockoff = phba->lpfc_injerr_lba - lba;
1331 numblks = sg_dma_len(sgpe) /
1332 sizeof(struct scsi_dif_tuple);
1333 if (numblks < blockoff)
1338 /* Next check if we need to match the remote NPortID or WWPN */
1339 rdata = lpfc_rport_data_from_scsi_device(sc->device);
1340 if (rdata && rdata->pnode) {
1341 ndlp = rdata->pnode;
1343 /* Make sure we have the right NPortID if one is specified */
1344 if (phba->lpfc_injerr_nportid &&
1345 (phba->lpfc_injerr_nportid != ndlp->nlp_DID))
1349 * Make sure we have the right WWPN if one is specified.
1350 * wwn[0] should be a non-zero NAA in a good WWPN.
1352 if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
1353 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
1354 sizeof(struct lpfc_name)) != 0))
1358 /* Setup a ptr to the protection data if the SCSI host provides it */
1360 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
1362 lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble;
1365 /* Should we change the Reference Tag */
1367 if (phba->lpfc_injerr_wref_cnt) {
1369 case SCSI_PROT_WRITE_PASS:
1372 * For WRITE_PASS, force the error
1373 * to be sent on the wire. It should
1374 * be detected by the Target.
1375 * If blockoff != 0 error will be
1376 * inserted in middle of the IO.
1379 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1380 "9076 BLKGRD: Injecting reftag error: "
1381 "write lba x%lx + x%x oldrefTag x%x\n",
1382 (unsigned long)lba, blockoff,
1383 be32_to_cpu(src->ref_tag));
1386 * Save the old ref_tag so we can
1387 * restore it on completion.
1390 lpfc_cmd->prot_data_type =
1392 lpfc_cmd->prot_data_segment =
1394 lpfc_cmd->prot_data =
1397 src->ref_tag = cpu_to_be32(0xDEADBEEF);
1398 phba->lpfc_injerr_wref_cnt--;
1399 if (phba->lpfc_injerr_wref_cnt == 0) {
1400 phba->lpfc_injerr_nportid = 0;
1401 phba->lpfc_injerr_lba =
1402 LPFC_INJERR_LBA_OFF;
1403 memset(&phba->lpfc_injerr_wwpn,
1404 0, sizeof(struct lpfc_name));
1406 rc = BG_ERR_TGT | BG_ERR_CHECK;
1411 case SCSI_PROT_WRITE_INSERT:
1413 * For WRITE_INSERT, force the error
1414 * to be sent on the wire. It should be
1415 * detected by the Target.
1417 /* DEADBEEF will be the reftag on the wire */
1418 *reftag = 0xDEADBEEF;
1419 phba->lpfc_injerr_wref_cnt--;
1420 if (phba->lpfc_injerr_wref_cnt == 0) {
1421 phba->lpfc_injerr_nportid = 0;
1422 phba->lpfc_injerr_lba =
1423 LPFC_INJERR_LBA_OFF;
1424 memset(&phba->lpfc_injerr_wwpn,
1425 0, sizeof(struct lpfc_name));
1427 rc = BG_ERR_TGT | BG_ERR_CHECK;
1429 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1430 "9078 BLKGRD: Injecting reftag error: "
1431 "write lba x%lx\n", (unsigned long)lba);
1433 case SCSI_PROT_WRITE_STRIP:
1435 * For WRITE_STRIP and WRITE_PASS,
1436 * force the error on data
1437 * being copied from SLI-Host to SLI-Port.
1439 *reftag = 0xDEADBEEF;
1440 phba->lpfc_injerr_wref_cnt--;
1441 if (phba->lpfc_injerr_wref_cnt == 0) {
1442 phba->lpfc_injerr_nportid = 0;
1443 phba->lpfc_injerr_lba =
1444 LPFC_INJERR_LBA_OFF;
1445 memset(&phba->lpfc_injerr_wwpn,
1446 0, sizeof(struct lpfc_name));
1450 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1451 "9077 BLKGRD: Injecting reftag error: "
1452 "write lba x%lx\n", (unsigned long)lba);
1456 if (phba->lpfc_injerr_rref_cnt) {
1458 case SCSI_PROT_READ_INSERT:
1459 case SCSI_PROT_READ_STRIP:
1460 case SCSI_PROT_READ_PASS:
1462 * For READ_STRIP and READ_PASS, force the
1463 * error on data being read off the wire. It
1464 * should force an IO error to the driver.
1466 *reftag = 0xDEADBEEF;
1467 phba->lpfc_injerr_rref_cnt--;
1468 if (phba->lpfc_injerr_rref_cnt == 0) {
1469 phba->lpfc_injerr_nportid = 0;
1470 phba->lpfc_injerr_lba =
1471 LPFC_INJERR_LBA_OFF;
1472 memset(&phba->lpfc_injerr_wwpn,
1473 0, sizeof(struct lpfc_name));
1477 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1478 "9079 BLKGRD: Injecting reftag error: "
1479 "read lba x%lx\n", (unsigned long)lba);
1485 /* Should we change the Application Tag */
1487 if (phba->lpfc_injerr_wapp_cnt) {
1489 case SCSI_PROT_WRITE_PASS:
1492 * For WRITE_PASS, force the error
1493 * to be sent on the wire. It should
1494 * be detected by the Target.
1495 * If blockoff != 0 error will be
1496 * inserted in middle of the IO.
1499 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1500 "9080 BLKGRD: Injecting apptag error: "
1501 "write lba x%lx + x%x oldappTag x%x\n",
1502 (unsigned long)lba, blockoff,
1503 be16_to_cpu(src->app_tag));
1506 * Save the old app_tag so we can
1507 * restore it on completion.
1510 lpfc_cmd->prot_data_type =
1512 lpfc_cmd->prot_data_segment =
1514 lpfc_cmd->prot_data =
1517 src->app_tag = cpu_to_be16(0xDEAD);
1518 phba->lpfc_injerr_wapp_cnt--;
1519 if (phba->lpfc_injerr_wapp_cnt == 0) {
1520 phba->lpfc_injerr_nportid = 0;
1521 phba->lpfc_injerr_lba =
1522 LPFC_INJERR_LBA_OFF;
1523 memset(&phba->lpfc_injerr_wwpn,
1524 0, sizeof(struct lpfc_name));
1526 rc = BG_ERR_TGT | BG_ERR_CHECK;
1530 case SCSI_PROT_WRITE_INSERT:
1532 * For WRITE_INSERT, force the
1533 * error to be sent on the wire. It should be
1534 * detected by the Target.
1536 /* DEAD will be the apptag on the wire */
1538 phba->lpfc_injerr_wapp_cnt--;
1539 if (phba->lpfc_injerr_wapp_cnt == 0) {
1540 phba->lpfc_injerr_nportid = 0;
1541 phba->lpfc_injerr_lba =
1542 LPFC_INJERR_LBA_OFF;
1543 memset(&phba->lpfc_injerr_wwpn,
1544 0, sizeof(struct lpfc_name));
1546 rc = BG_ERR_TGT | BG_ERR_CHECK;
1548 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1549 "0813 BLKGRD: Injecting apptag error: "
1550 "write lba x%lx\n", (unsigned long)lba);
1552 case SCSI_PROT_WRITE_STRIP:
1554 * For WRITE_STRIP and WRITE_PASS,
1555 * force the error on data
1556 * being copied from SLI-Host to SLI-Port.
1559 phba->lpfc_injerr_wapp_cnt--;
1560 if (phba->lpfc_injerr_wapp_cnt == 0) {
1561 phba->lpfc_injerr_nportid = 0;
1562 phba->lpfc_injerr_lba =
1563 LPFC_INJERR_LBA_OFF;
1564 memset(&phba->lpfc_injerr_wwpn,
1565 0, sizeof(struct lpfc_name));
1569 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1570 "0812 BLKGRD: Injecting apptag error: "
1571 "write lba x%lx\n", (unsigned long)lba);
1575 if (phba->lpfc_injerr_rapp_cnt) {
1577 case SCSI_PROT_READ_INSERT:
1578 case SCSI_PROT_READ_STRIP:
1579 case SCSI_PROT_READ_PASS:
1581 * For READ_STRIP and READ_PASS, force the
1582 * error on data being read off the wire. It
1583 * should force an IO error to the driver.
1586 phba->lpfc_injerr_rapp_cnt--;
1587 if (phba->lpfc_injerr_rapp_cnt == 0) {
1588 phba->lpfc_injerr_nportid = 0;
1589 phba->lpfc_injerr_lba =
1590 LPFC_INJERR_LBA_OFF;
1591 memset(&phba->lpfc_injerr_wwpn,
1592 0, sizeof(struct lpfc_name));
1596 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1597 "0814 BLKGRD: Injecting apptag error: "
1598 "read lba x%lx\n", (unsigned long)lba);
1605 /* Should we change the Guard Tag */
1607 if (phba->lpfc_injerr_wgrd_cnt) {
1609 case SCSI_PROT_WRITE_PASS:
1613 case SCSI_PROT_WRITE_INSERT:
1615 * For WRITE_INSERT, force the
1616 * error to be sent on the wire. It should be
1617 * detected by the Target.
1619 phba->lpfc_injerr_wgrd_cnt--;
1620 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1621 phba->lpfc_injerr_nportid = 0;
1622 phba->lpfc_injerr_lba =
1623 LPFC_INJERR_LBA_OFF;
1624 memset(&phba->lpfc_injerr_wwpn,
1625 0, sizeof(struct lpfc_name));
1628 rc |= BG_ERR_TGT | BG_ERR_SWAP;
1629 /* Signals the caller to swap CRC->CSUM */
1631 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1632 "0817 BLKGRD: Injecting guard error: "
1633 "write lba x%lx\n", (unsigned long)lba);
1635 case SCSI_PROT_WRITE_STRIP:
1637 * For WRITE_STRIP and WRITE_PASS,
1638 * force the error on data
1639 * being copied from SLI-Host to SLI-Port.
1641 phba->lpfc_injerr_wgrd_cnt--;
1642 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1643 phba->lpfc_injerr_nportid = 0;
1644 phba->lpfc_injerr_lba =
1645 LPFC_INJERR_LBA_OFF;
1646 memset(&phba->lpfc_injerr_wwpn,
1647 0, sizeof(struct lpfc_name));
1650 rc = BG_ERR_INIT | BG_ERR_SWAP;
1651 /* Signals the caller to swap CRC->CSUM */
1653 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1654 "0816 BLKGRD: Injecting guard error: "
1655 "write lba x%lx\n", (unsigned long)lba);
1659 if (phba->lpfc_injerr_rgrd_cnt) {
1661 case SCSI_PROT_READ_INSERT:
1662 case SCSI_PROT_READ_STRIP:
1663 case SCSI_PROT_READ_PASS:
1665 * For READ_STRIP and READ_PASS, force the
1666 * error on data being read off the wire. It
1667 * should force an IO error to the driver.
1669 phba->lpfc_injerr_rgrd_cnt--;
1670 if (phba->lpfc_injerr_rgrd_cnt == 0) {
1671 phba->lpfc_injerr_nportid = 0;
1672 phba->lpfc_injerr_lba =
1673 LPFC_INJERR_LBA_OFF;
1674 memset(&phba->lpfc_injerr_wwpn,
1675 0, sizeof(struct lpfc_name));
1678 rc = BG_ERR_INIT | BG_ERR_SWAP;
1679 /* Signals the caller to swap CRC->CSUM */
1681 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1682 "0818 BLKGRD: Injecting guard error: "
1683 "read lba x%lx\n", (unsigned long)lba);
1693 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
1694 * the specified SCSI command.
1695 * @phba: The Hba for which this call is being executed.
1696 * @sc: The SCSI command to examine
1697 * @txopt: (out) BlockGuard operation for transmitted data
1698 * @rxopt: (out) BlockGuard operation for received data
1700 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1704 lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1705 uint8_t *txop, uint8_t *rxop)
1709 if (lpfc_cmd_guard_csum(sc)) {
1710 switch (scsi_get_prot_op(sc)) {
1711 case SCSI_PROT_READ_INSERT:
1712 case SCSI_PROT_WRITE_STRIP:
1713 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
1714 *txop = BG_OP_IN_CSUM_OUT_NODIF;
1717 case SCSI_PROT_READ_STRIP:
1718 case SCSI_PROT_WRITE_INSERT:
1719 *rxop = BG_OP_IN_CRC_OUT_NODIF;
1720 *txop = BG_OP_IN_NODIF_OUT_CRC;
1723 case SCSI_PROT_READ_PASS:
1724 case SCSI_PROT_WRITE_PASS:
1725 *rxop = BG_OP_IN_CRC_OUT_CSUM;
1726 *txop = BG_OP_IN_CSUM_OUT_CRC;
1729 case SCSI_PROT_NORMAL:
1731 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1732 "9063 BLKGRD: Bad op/guard:%d/IP combination\n",
1733 scsi_get_prot_op(sc));
1739 switch (scsi_get_prot_op(sc)) {
1740 case SCSI_PROT_READ_STRIP:
1741 case SCSI_PROT_WRITE_INSERT:
1742 *rxop = BG_OP_IN_CRC_OUT_NODIF;
1743 *txop = BG_OP_IN_NODIF_OUT_CRC;
1746 case SCSI_PROT_READ_PASS:
1747 case SCSI_PROT_WRITE_PASS:
1748 *rxop = BG_OP_IN_CRC_OUT_CRC;
1749 *txop = BG_OP_IN_CRC_OUT_CRC;
1752 case SCSI_PROT_READ_INSERT:
1753 case SCSI_PROT_WRITE_STRIP:
1754 *rxop = BG_OP_IN_NODIF_OUT_CRC;
1755 *txop = BG_OP_IN_CRC_OUT_NODIF;
1758 case SCSI_PROT_NORMAL:
1760 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1761 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
1762 scsi_get_prot_op(sc));
1771 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1773 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
1774 * the specified SCSI command in order to force a guard tag error.
1775 * @phba: The Hba for which this call is being executed.
1776 * @sc: The SCSI command to examine
1777 * @txopt: (out) BlockGuard operation for transmitted data
1778 * @rxopt: (out) BlockGuard operation for received data
1780 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1784 lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1785 uint8_t *txop, uint8_t *rxop)
1789 if (lpfc_cmd_guard_csum(sc)) {
1790 switch (scsi_get_prot_op(sc)) {
1791 case SCSI_PROT_READ_INSERT:
1792 case SCSI_PROT_WRITE_STRIP:
1793 *rxop = BG_OP_IN_NODIF_OUT_CRC;
1794 *txop = BG_OP_IN_CRC_OUT_NODIF;
1797 case SCSI_PROT_READ_STRIP:
1798 case SCSI_PROT_WRITE_INSERT:
1799 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
1800 *txop = BG_OP_IN_NODIF_OUT_CSUM;
1803 case SCSI_PROT_READ_PASS:
1804 case SCSI_PROT_WRITE_PASS:
1805 *rxop = BG_OP_IN_CSUM_OUT_CRC;
1806 *txop = BG_OP_IN_CRC_OUT_CSUM;
1809 case SCSI_PROT_NORMAL:
1815 switch (scsi_get_prot_op(sc)) {
1816 case SCSI_PROT_READ_STRIP:
1817 case SCSI_PROT_WRITE_INSERT:
1818 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
1819 *txop = BG_OP_IN_NODIF_OUT_CSUM;
1822 case SCSI_PROT_READ_PASS:
1823 case SCSI_PROT_WRITE_PASS:
1824 *rxop = BG_OP_IN_CSUM_OUT_CSUM;
1825 *txop = BG_OP_IN_CSUM_OUT_CSUM;
1828 case SCSI_PROT_READ_INSERT:
1829 case SCSI_PROT_WRITE_STRIP:
1830 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
1831 *txop = BG_OP_IN_CSUM_OUT_NODIF;
1834 case SCSI_PROT_NORMAL:
1845 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
1846 * @phba: The Hba for which this call is being executed.
1847 * @sc: pointer to scsi command we're working on
1848 * @bpl: pointer to buffer list for protection groups
1849 * @datacnt: number of segments of data that have been dma mapped
1851 * This function sets up BPL buffer list for protection groups of
1852 * type LPFC_PG_TYPE_NO_DIF
1854 * This is usually used when the HBA is instructed to generate
1855 * DIFs and insert them into data stream (or strip DIF from
1856 * incoming data stream)
1858 * The buffer list consists of just one protection group described
1860 * +-------------------------+
1861 * start of prot group --> | PDE_5 |
1862 * +-------------------------+
1864 * +-------------------------+
1866 * +-------------------------+
1867 * |more Data BDE's ... (opt)|
1868 * +-------------------------+
1871 * Note: Data s/g buffers have been dma mapped
1873 * Returns the number of BDEs added to the BPL.
1876 lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1877 struct ulp_bde64 *bpl, int datasegcnt)
1879 struct scatterlist *sgde = NULL; /* s/g data entry */
1880 struct lpfc_pde5 *pde5 = NULL;
1881 struct lpfc_pde6 *pde6 = NULL;
1882 dma_addr_t physaddr;
1883 int i = 0, num_bde = 0, status;
1884 int datadir = sc->sc_data_direction;
1885 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1888 uint32_t checking = 1;
1892 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
1896 /* extract some info from the scsi command for pde*/
1897 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
1899 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1900 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
1902 if (rc & BG_ERR_SWAP)
1903 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
1904 if (rc & BG_ERR_CHECK)
1909 /* setup PDE5 with what we have */
1910 pde5 = (struct lpfc_pde5 *) bpl;
1911 memset(pde5, 0, sizeof(struct lpfc_pde5));
1912 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
1914 /* Endianness conversion if necessary for PDE5 */
1915 pde5->word0 = cpu_to_le32(pde5->word0);
1916 pde5->reftag = cpu_to_le32(reftag);
1918 /* advance bpl and increment bde count */
1921 pde6 = (struct lpfc_pde6 *) bpl;
1923 /* setup PDE6 with the rest of the info */
1924 memset(pde6, 0, sizeof(struct lpfc_pde6));
1925 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
1926 bf_set(pde6_optx, pde6, txop);
1927 bf_set(pde6_oprx, pde6, rxop);
1930 * We only need to check the data on READs, for WRITEs
1931 * protection data is automatically generated, not checked.
1933 if (datadir == DMA_FROM_DEVICE) {
1934 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
1935 bf_set(pde6_ce, pde6, checking);
1937 bf_set(pde6_ce, pde6, 0);
1939 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
1940 bf_set(pde6_re, pde6, checking);
1942 bf_set(pde6_re, pde6, 0);
1944 bf_set(pde6_ai, pde6, 1);
1945 bf_set(pde6_ae, pde6, 0);
1946 bf_set(pde6_apptagval, pde6, 0);
1948 /* Endianness conversion if necessary for PDE6 */
1949 pde6->word0 = cpu_to_le32(pde6->word0);
1950 pde6->word1 = cpu_to_le32(pde6->word1);
1951 pde6->word2 = cpu_to_le32(pde6->word2);
1953 /* advance bpl and increment bde count */
1957 /* assumption: caller has already run dma_map_sg on command data */
1958 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
1959 physaddr = sg_dma_address(sgde);
1960 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
1961 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
1962 bpl->tus.f.bdeSize = sg_dma_len(sgde);
1963 if (datadir == DMA_TO_DEVICE)
1964 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1966 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
1967 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1977 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
1978 * @phba: The Hba for which this call is being executed.
1979 * @sc: pointer to scsi command we're working on
1980 * @bpl: pointer to buffer list for protection groups
1981 * @datacnt: number of segments of data that have been dma mapped
1982 * @protcnt: number of segment of protection data that have been dma mapped
1984 * This function sets up BPL buffer list for protection groups of
1985 * type LPFC_PG_TYPE_DIF
1987 * This is usually used when DIFs are in their own buffers,
1988 * separate from the data. The HBA can then by instructed
1989 * to place the DIFs in the outgoing stream. For read operations,
1990 * The HBA could extract the DIFs and place it in DIF buffers.
1992 * The buffer list for this type consists of one or more of the
1993 * protection groups described below:
1994 * +-------------------------+
1995 * start of first prot group --> | PDE_5 |
1996 * +-------------------------+
1998 * +-------------------------+
1999 * | PDE_7 (Prot BDE) |
2000 * +-------------------------+
2002 * +-------------------------+
2003 * |more Data BDE's ... (opt)|
2004 * +-------------------------+
2005 * start of new prot group --> | PDE_5 |
2006 * +-------------------------+
2008 * +-------------------------+
2010 * Note: It is assumed that both data and protection s/g buffers have been
2013 * Returns the number of BDEs added to the BPL.
2016 lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2017 struct ulp_bde64 *bpl, int datacnt, int protcnt)
2019 struct scatterlist *sgde = NULL; /* s/g data entry */
2020 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2021 struct lpfc_pde5 *pde5 = NULL;
2022 struct lpfc_pde6 *pde6 = NULL;
2023 struct lpfc_pde7 *pde7 = NULL;
2024 dma_addr_t dataphysaddr, protphysaddr;
2025 unsigned short curr_data = 0, curr_prot = 0;
2026 unsigned int split_offset;
2027 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2028 unsigned int protgrp_blks, protgrp_bytes;
2029 unsigned int remainder, subtotal;
2031 int datadir = sc->sc_data_direction;
2032 unsigned char pgdone = 0, alldone = 0;
2034 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2037 uint32_t checking = 1;
2042 sgpe = scsi_prot_sglist(sc);
2043 sgde = scsi_sglist(sc);
2045 if (!sgpe || !sgde) {
2046 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2047 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
2052 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2056 /* extract some info from the scsi command */
2057 blksize = lpfc_cmd_blksize(sc);
2058 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2060 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2061 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2063 if (rc & BG_ERR_SWAP)
2064 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2065 if (rc & BG_ERR_CHECK)
2072 /* Check to see if we ran out of space */
2073 if (num_bde >= (phba->cfg_total_seg_cnt - 2))
2076 /* setup PDE5 with what we have */
2077 pde5 = (struct lpfc_pde5 *) bpl;
2078 memset(pde5, 0, sizeof(struct lpfc_pde5));
2079 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
2081 /* Endianness conversion if necessary for PDE5 */
2082 pde5->word0 = cpu_to_le32(pde5->word0);
2083 pde5->reftag = cpu_to_le32(reftag);
2085 /* advance bpl and increment bde count */
2088 pde6 = (struct lpfc_pde6 *) bpl;
2090 /* setup PDE6 with the rest of the info */
2091 memset(pde6, 0, sizeof(struct lpfc_pde6));
2092 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2093 bf_set(pde6_optx, pde6, txop);
2094 bf_set(pde6_oprx, pde6, rxop);
2096 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
2097 bf_set(pde6_ce, pde6, checking);
2099 bf_set(pde6_ce, pde6, 0);
2101 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2102 bf_set(pde6_re, pde6, checking);
2104 bf_set(pde6_re, pde6, 0);
2106 bf_set(pde6_ai, pde6, 1);
2107 bf_set(pde6_ae, pde6, 0);
2108 bf_set(pde6_apptagval, pde6, 0);
2110 /* Endianness conversion if necessary for PDE6 */
2111 pde6->word0 = cpu_to_le32(pde6->word0);
2112 pde6->word1 = cpu_to_le32(pde6->word1);
2113 pde6->word2 = cpu_to_le32(pde6->word2);
2115 /* advance bpl and increment bde count */
2119 /* setup the first BDE that points to protection buffer */
2120 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2121 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2123 /* must be integer multiple of the DIF block length */
2124 BUG_ON(protgroup_len % 8);
2126 pde7 = (struct lpfc_pde7 *) bpl;
2127 memset(pde7, 0, sizeof(struct lpfc_pde7));
2128 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
2130 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
2131 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
2133 protgrp_blks = protgroup_len / 8;
2134 protgrp_bytes = protgrp_blks * blksize;
2136 /* check if this pde is crossing the 4K boundary; if so split */
2137 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
2138 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
2139 protgroup_offset += protgroup_remainder;
2140 protgrp_blks = protgroup_remainder / 8;
2141 protgrp_bytes = protgrp_blks * blksize;
2143 protgroup_offset = 0;
2149 /* setup BDE's for data blocks associated with DIF data */
2151 subtotal = 0; /* total bytes processed for current prot grp */
2153 /* Check to see if we ran out of space */
2154 if (num_bde >= phba->cfg_total_seg_cnt)
2158 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2159 "9065 BLKGRD:%s Invalid data segment\n",
2164 dataphysaddr = sg_dma_address(sgde) + split_offset;
2165 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
2166 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
2168 remainder = sg_dma_len(sgde) - split_offset;
2170 if ((subtotal + remainder) <= protgrp_bytes) {
2171 /* we can use this whole buffer */
2172 bpl->tus.f.bdeSize = remainder;
2175 if ((subtotal + remainder) == protgrp_bytes)
2178 /* must split this buffer with next prot grp */
2179 bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
2180 split_offset += bpl->tus.f.bdeSize;
2183 subtotal += bpl->tus.f.bdeSize;
2185 if (datadir == DMA_TO_DEVICE)
2186 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2188 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2189 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2197 /* Move to the next s/g segment if possible */
2198 sgde = sg_next(sgde);
2202 if (protgroup_offset) {
2203 /* update the reference tag */
2204 reftag += protgrp_blks;
2210 if (curr_prot == protcnt) {
2212 } else if (curr_prot < protcnt) {
2213 /* advance to next prot buffer */
2214 sgpe = sg_next(sgpe);
2217 /* update the reference tag */
2218 reftag += protgrp_blks;
2220 /* if we're here, we have a bug */
2221 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2222 "9054 BLKGRD: bug in %s\n", __func__);
2232 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
2233 * @phba: The Hba for which this call is being executed.
2234 * @sc: pointer to scsi command we're working on
2235 * @sgl: pointer to buffer list for protection groups
2236 * @datacnt: number of segments of data that have been dma mapped
2238 * This function sets up SGL buffer list for protection groups of
2239 * type LPFC_PG_TYPE_NO_DIF
2241 * This is usually used when the HBA is instructed to generate
2242 * DIFs and insert them into data stream (or strip DIF from
2243 * incoming data stream)
2245 * The buffer list consists of just one protection group described
2247 * +-------------------------+
2248 * start of prot group --> | DI_SEED |
2249 * +-------------------------+
2251 * +-------------------------+
2252 * |more Data SGE's ... (opt)|
2253 * +-------------------------+
2256 * Note: Data s/g buffers have been dma mapped
2258 * Returns the number of SGEs added to the SGL.
2261 lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2262 struct sli4_sge *sgl, int datasegcnt)
2264 struct scatterlist *sgde = NULL; /* s/g data entry */
2265 struct sli4_sge_diseed *diseed = NULL;
2266 dma_addr_t physaddr;
2267 int i = 0, num_sge = 0, status;
2270 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2273 uint32_t checking = 1;
2275 uint32_t dma_offset = 0;
2277 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2281 /* extract some info from the scsi command for pde*/
2282 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2284 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2285 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2287 if (rc & BG_ERR_SWAP)
2288 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2289 if (rc & BG_ERR_CHECK)
2294 /* setup DISEED with what we have */
2295 diseed = (struct sli4_sge_diseed *) sgl;
2296 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2297 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2299 /* Endianness conversion if necessary */
2300 diseed->ref_tag = cpu_to_le32(reftag);
2301 diseed->ref_tag_tran = diseed->ref_tag;
2304 * We only need to check the data on READs, for WRITEs
2305 * protection data is automatically generated, not checked.
2307 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2308 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
2309 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2311 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2313 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2314 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2316 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2319 /* setup DISEED with the rest of the info */
2320 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2321 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
2323 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2324 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2326 /* Endianness conversion if necessary for DISEED */
2327 diseed->word2 = cpu_to_le32(diseed->word2);
2328 diseed->word3 = cpu_to_le32(diseed->word3);
2330 /* advance bpl and increment sge count */
2334 /* assumption: caller has already run dma_map_sg on command data */
2335 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2336 physaddr = sg_dma_address(sgde);
2337 dma_len = sg_dma_len(sgde);
2338 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
2339 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
2340 if ((i + 1) == datasegcnt)
2341 bf_set(lpfc_sli4_sge_last, sgl, 1);
2343 bf_set(lpfc_sli4_sge_last, sgl, 0);
2344 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2345 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2347 sgl->sge_len = cpu_to_le32(dma_len);
2348 dma_offset += dma_len;
2359 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
2360 * @phba: The Hba for which this call is being executed.
2361 * @sc: pointer to scsi command we're working on
2362 * @sgl: pointer to buffer list for protection groups
2363 * @datacnt: number of segments of data that have been dma mapped
2364 * @protcnt: number of segment of protection data that have been dma mapped
2366 * This function sets up SGL buffer list for protection groups of
2367 * type LPFC_PG_TYPE_DIF
2369 * This is usually used when DIFs are in their own buffers,
2370 * separate from the data. The HBA can then by instructed
2371 * to place the DIFs in the outgoing stream. For read operations,
2372 * The HBA could extract the DIFs and place it in DIF buffers.
2374 * The buffer list for this type consists of one or more of the
2375 * protection groups described below:
2376 * +-------------------------+
2377 * start of first prot group --> | DISEED |
2378 * +-------------------------+
2379 * | DIF (Prot SGE) |
2380 * +-------------------------+
2382 * +-------------------------+
2383 * |more Data SGE's ... (opt)|
2384 * +-------------------------+
2385 * start of new prot group --> | DISEED |
2386 * +-------------------------+
2388 * +-------------------------+
2390 * Note: It is assumed that both data and protection s/g buffers have been
2393 * Returns the number of SGEs added to the SGL.
2396 lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2397 struct sli4_sge *sgl, int datacnt, int protcnt)
2399 struct scatterlist *sgde = NULL; /* s/g data entry */
2400 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2401 struct sli4_sge_diseed *diseed = NULL;
2402 dma_addr_t dataphysaddr, protphysaddr;
2403 unsigned short curr_data = 0, curr_prot = 0;
2404 unsigned int split_offset;
2405 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2406 unsigned int protgrp_blks, protgrp_bytes;
2407 unsigned int remainder, subtotal;
2409 unsigned char pgdone = 0, alldone = 0;
2414 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2417 uint32_t checking = 1;
2418 uint32_t dma_offset = 0;
2421 sgpe = scsi_prot_sglist(sc);
2422 sgde = scsi_sglist(sc);
2424 if (!sgpe || !sgde) {
2425 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2426 "9082 Invalid s/g entry: data=0x%p prot=0x%p\n",
2431 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2435 /* extract some info from the scsi command */
2436 blksize = lpfc_cmd_blksize(sc);
2437 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2439 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2440 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2442 if (rc & BG_ERR_SWAP)
2443 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2444 if (rc & BG_ERR_CHECK)
2451 /* Check to see if we ran out of space */
2452 if (num_sge >= (phba->cfg_total_seg_cnt - 2))
2455 /* setup DISEED with what we have */
2456 diseed = (struct sli4_sge_diseed *) sgl;
2457 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2458 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2460 /* Endianness conversion if necessary */
2461 diseed->ref_tag = cpu_to_le32(reftag);
2462 diseed->ref_tag_tran = diseed->ref_tag;
2464 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
2465 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2468 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2470 * When in this mode, the hardware will replace
2471 * the guard tag from the host with a
2472 * newly generated good CRC for the wire.
2473 * Switch to raw mode here to avoid this
2474 * behavior. What the host sends gets put on the wire.
2476 if (txop == BG_OP_IN_CRC_OUT_CRC) {
2477 txop = BG_OP_RAW_MODE;
2478 rxop = BG_OP_RAW_MODE;
2483 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2484 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2486 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2488 /* setup DISEED with the rest of the info */
2489 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2490 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
2492 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2493 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2495 /* Endianness conversion if necessary for DISEED */
2496 diseed->word2 = cpu_to_le32(diseed->word2);
2497 diseed->word3 = cpu_to_le32(diseed->word3);
2499 /* advance sgl and increment bde count */
2503 /* setup the first BDE that points to protection buffer */
2504 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2505 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2507 /* must be integer multiple of the DIF block length */
2508 BUG_ON(protgroup_len % 8);
2510 /* Now setup DIF SGE */
2512 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
2513 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
2514 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
2515 sgl->word2 = cpu_to_le32(sgl->word2);
2517 protgrp_blks = protgroup_len / 8;
2518 protgrp_bytes = protgrp_blks * blksize;
2520 /* check if DIF SGE is crossing the 4K boundary; if so split */
2521 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
2522 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
2523 protgroup_offset += protgroup_remainder;
2524 protgrp_blks = protgroup_remainder / 8;
2525 protgrp_bytes = protgrp_blks * blksize;
2527 protgroup_offset = 0;
2533 /* setup SGE's for data blocks associated with DIF data */
2535 subtotal = 0; /* total bytes processed for current prot grp */
2537 /* Check to see if we ran out of space */
2538 if (num_sge >= phba->cfg_total_seg_cnt)
2542 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2543 "9086 BLKGRD:%s Invalid data segment\n",
2548 dataphysaddr = sg_dma_address(sgde) + split_offset;
2550 remainder = sg_dma_len(sgde) - split_offset;
2552 if ((subtotal + remainder) <= protgrp_bytes) {
2553 /* we can use this whole buffer */
2554 dma_len = remainder;
2557 if ((subtotal + remainder) == protgrp_bytes)
2560 /* must split this buffer with next prot grp */
2561 dma_len = protgrp_bytes - subtotal;
2562 split_offset += dma_len;
2565 subtotal += dma_len;
2567 sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr));
2568 sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr));
2569 bf_set(lpfc_sli4_sge_last, sgl, 0);
2570 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2571 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2573 sgl->sge_len = cpu_to_le32(dma_len);
2574 dma_offset += dma_len;
2582 /* Move to the next s/g segment if possible */
2583 sgde = sg_next(sgde);
2586 if (protgroup_offset) {
2587 /* update the reference tag */
2588 reftag += protgrp_blks;
2594 if (curr_prot == protcnt) {
2595 bf_set(lpfc_sli4_sge_last, sgl, 1);
2597 } else if (curr_prot < protcnt) {
2598 /* advance to next prot buffer */
2599 sgpe = sg_next(sgpe);
2602 /* update the reference tag */
2603 reftag += protgrp_blks;
2605 /* if we're here, we have a bug */
2606 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2607 "9085 BLKGRD: bug in %s\n", __func__);
2618 * lpfc_prot_group_type - Get prtotection group type of SCSI command
2619 * @phba: The Hba for which this call is being executed.
2620 * @sc: pointer to scsi command we're working on
2622 * Given a SCSI command that supports DIF, determine composition of protection
2623 * groups involved in setting up buffer lists
2625 * Returns: Protection group type (with or without DIF)
2629 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
2631 int ret = LPFC_PG_TYPE_INVALID;
2632 unsigned char op = scsi_get_prot_op(sc);
2635 case SCSI_PROT_READ_STRIP:
2636 case SCSI_PROT_WRITE_INSERT:
2637 ret = LPFC_PG_TYPE_NO_DIF;
2639 case SCSI_PROT_READ_INSERT:
2640 case SCSI_PROT_WRITE_STRIP:
2641 case SCSI_PROT_READ_PASS:
2642 case SCSI_PROT_WRITE_PASS:
2643 ret = LPFC_PG_TYPE_DIF_BUF;
2647 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2648 "9021 Unsupported protection op:%d\n",
2656 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
2657 * @phba: The Hba for which this call is being executed.
2658 * @lpfc_cmd: The scsi buffer which is going to be adjusted.
2660 * Adjust the data length to account for how much data
2661 * is actually on the wire.
2663 * returns the adjusted data length
2666 lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
2667 struct lpfc_scsi_buf *lpfc_cmd)
2669 struct scsi_cmnd *sc = lpfc_cmd->pCmd;
2672 fcpdl = scsi_bufflen(sc);
2674 /* Check if there is protection data on the wire */
2675 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2676 /* Read check for protection data */
2677 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
2681 /* Write check for protection data */
2682 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
2687 * If we are in DIF Type 1 mode every data block has a 8 byte
2688 * DIF (trailer) attached to it. Must ajust FCP data length
2689 * to account for the protection data.
2691 fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
2697 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
2698 * @phba: The Hba for which this call is being executed.
2699 * @lpfc_cmd: The scsi buffer which is going to be prep'ed.
2701 * This is the protection/DIF aware version of
2702 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
2703 * two functions eventually, but for now, it's here
2706 lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
2707 struct lpfc_scsi_buf *lpfc_cmd)
2709 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
2710 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
2711 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
2712 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
2713 uint32_t num_bde = 0;
2714 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
2715 int prot_group_type = 0;
2717 struct lpfc_vport *vport = phba->pport;
2720 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
2721 * fcp_rsp regions to the first data bde entry
2724 if (scsi_sg_count(scsi_cmnd)) {
2726 * The driver stores the segment count returned from pci_map_sg
2727 * because this a count of dma-mappings used to map the use_sg
2728 * pages. They are not guaranteed to be the same for those
2729 * architectures that implement an IOMMU.
2731 datasegcnt = dma_map_sg(&phba->pcidev->dev,
2732 scsi_sglist(scsi_cmnd),
2733 scsi_sg_count(scsi_cmnd), datadir);
2734 if (unlikely(!datasegcnt))
2737 lpfc_cmd->seg_cnt = datasegcnt;
2739 /* First check if data segment count from SCSI Layer is good */
2740 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
2743 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
2745 switch (prot_group_type) {
2746 case LPFC_PG_TYPE_NO_DIF:
2748 /* Here we need to add a PDE5 and PDE6 to the count */
2749 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt)
2752 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
2754 /* we should have 2 or more entries in buffer list */
2759 case LPFC_PG_TYPE_DIF_BUF:
2761 * This type indicates that protection buffers are
2762 * passed to the driver, so that needs to be prepared
2765 protsegcnt = dma_map_sg(&phba->pcidev->dev,
2766 scsi_prot_sglist(scsi_cmnd),
2767 scsi_prot_sg_count(scsi_cmnd), datadir);
2768 if (unlikely(!protsegcnt)) {
2769 scsi_dma_unmap(scsi_cmnd);
2773 lpfc_cmd->prot_seg_cnt = protsegcnt;
2776 * There is a minimun of 4 BPLs used for every
2777 * protection data segment.
2779 if ((lpfc_cmd->prot_seg_cnt * 4) >
2780 (phba->cfg_total_seg_cnt - 2))
2783 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
2784 datasegcnt, protsegcnt);
2785 /* we should have 3 or more entries in buffer list */
2786 if ((num_bde < 3) ||
2787 (num_bde > phba->cfg_total_seg_cnt))
2791 case LPFC_PG_TYPE_INVALID:
2793 scsi_dma_unmap(scsi_cmnd);
2794 lpfc_cmd->seg_cnt = 0;
2796 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2797 "9022 Unexpected protection group %i\n",
2804 * Finish initializing those IOCB fields that are dependent on the
2805 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
2806 * reinitialized since all iocb memory resources are used many times
2807 * for transmit, receive, and continuation bpl's.
2809 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
2810 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
2811 iocb_cmd->ulpBdeCount = 1;
2812 iocb_cmd->ulpLe = 1;
2814 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
2815 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
2818 * Due to difference in data length between DIF/non-DIF paths,
2819 * we need to set word 4 of IOCB here
2821 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
2824 * For First burst, we may need to adjust the initial transfer
2827 if (iocb_cmd->un.fcpi.fcpi_XRdy &&
2828 (fcpdl < vport->cfg_first_burst_size))
2829 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
2833 if (lpfc_cmd->seg_cnt)
2834 scsi_dma_unmap(scsi_cmnd);
2835 if (lpfc_cmd->prot_seg_cnt)
2836 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
2837 scsi_prot_sg_count(scsi_cmnd),
2838 scsi_cmnd->sc_data_direction);
2840 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2841 "9023 Cannot setup S/G List for HBA"
2842 "IO segs %d/%d BPL %d SCSI %d: %d %d\n",
2843 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
2844 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
2845 prot_group_type, num_bde);
2847 lpfc_cmd->seg_cnt = 0;
2848 lpfc_cmd->prot_seg_cnt = 0;
2853 * This function calcuates the T10 DIF guard tag
2854 * on the specified data using a CRC algorithmn
2858 lpfc_bg_crc(uint8_t *data, int count)
2863 crc = crc_t10dif(data, count);
2864 x = cpu_to_be16(crc);
2869 * This function calcuates the T10 DIF guard tag
2870 * on the specified data using a CSUM algorithmn
2871 * using ip_compute_csum.
2874 lpfc_bg_csum(uint8_t *data, int count)
2878 ret = ip_compute_csum(data, count);
2883 * This function examines the protection data to try to determine
2884 * what type of T10-DIF error occurred.
2887 lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
2889 struct scatterlist *sgpe; /* s/g prot entry */
2890 struct scatterlist *sgde; /* s/g data entry */
2891 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
2892 struct scsi_dif_tuple *src = NULL;
2893 uint8_t *data_src = NULL;
2895 uint16_t start_app_tag, app_tag;
2896 uint32_t start_ref_tag, ref_tag;
2897 int prot, protsegcnt;
2898 int err_type, len, data_len;
2899 int chk_ref, chk_app, chk_guard;
2903 err_type = BGS_GUARD_ERR_MASK;
2907 /* First check to see if there is protection data to examine */
2908 prot = scsi_get_prot_op(cmd);
2909 if ((prot == SCSI_PROT_READ_STRIP) ||
2910 (prot == SCSI_PROT_WRITE_INSERT) ||
2911 (prot == SCSI_PROT_NORMAL))
2914 /* Currently the driver just supports ref_tag and guard_tag checking */
2919 /* Setup a ptr to the protection data provided by the SCSI host */
2920 sgpe = scsi_prot_sglist(cmd);
2921 protsegcnt = lpfc_cmd->prot_seg_cnt;
2923 if (sgpe && protsegcnt) {
2926 * We will only try to verify guard tag if the segment
2927 * data length is a multiple of the blksize.
2929 sgde = scsi_sglist(cmd);
2930 blksize = lpfc_cmd_blksize(cmd);
2931 data_src = (uint8_t *)sg_virt(sgde);
2932 data_len = sgde->length;
2933 if ((data_len & (blksize - 1)) == 0)
2936 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
2937 start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */
2938 start_app_tag = src->app_tag;
2940 while (src && protsegcnt) {
2944 * First check to see if a protection data
2947 if ((src->ref_tag == T10_PI_REF_ESCAPE) ||
2948 (src->app_tag == T10_PI_APP_ESCAPE)) {
2953 /* First Guard Tag checking */
2955 guard_tag = src->guard_tag;
2956 if (lpfc_cmd_guard_csum(cmd))
2957 sum = lpfc_bg_csum(data_src,
2960 sum = lpfc_bg_crc(data_src,
2962 if ((guard_tag != sum)) {
2963 err_type = BGS_GUARD_ERR_MASK;
2968 /* Reference Tag checking */
2969 ref_tag = be32_to_cpu(src->ref_tag);
2970 if (chk_ref && (ref_tag != start_ref_tag)) {
2971 err_type = BGS_REFTAG_ERR_MASK;
2976 /* App Tag checking */
2977 app_tag = src->app_tag;
2978 if (chk_app && (app_tag != start_app_tag)) {
2979 err_type = BGS_APPTAG_ERR_MASK;
2983 len -= sizeof(struct scsi_dif_tuple);
2988 data_src += blksize;
2989 data_len -= blksize;
2992 * Are we at the end of the Data segment?
2993 * The data segment is only used for Guard
2996 if (chk_guard && (data_len == 0)) {
2998 sgde = sg_next(sgde);
3002 data_src = (uint8_t *)sg_virt(sgde);
3003 data_len = sgde->length;
3004 if ((data_len & (blksize - 1)) == 0)
3009 /* Goto the next Protection data segment */
3010 sgpe = sg_next(sgpe);
3012 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
3021 if (err_type == BGS_GUARD_ERR_MASK) {
3022 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3024 cmd->result = DRIVER_SENSE << 24
3025 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3026 phba->bg_guard_err_cnt++;
3027 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3028 "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n",
3029 (unsigned long)scsi_get_lba(cmd),
3032 } else if (err_type == BGS_REFTAG_ERR_MASK) {
3033 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3035 cmd->result = DRIVER_SENSE << 24
3036 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3038 phba->bg_reftag_err_cnt++;
3039 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3040 "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n",
3041 (unsigned long)scsi_get_lba(cmd),
3042 ref_tag, start_ref_tag);
3044 } else if (err_type == BGS_APPTAG_ERR_MASK) {
3045 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3047 cmd->result = DRIVER_SENSE << 24
3048 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3050 phba->bg_apptag_err_cnt++;
3051 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3052 "9041 BLKGRD: LBA %lx app_tag error %x != %x\n",
3053 (unsigned long)scsi_get_lba(cmd),
3054 app_tag, start_app_tag);
3060 * This function checks for BlockGuard errors detected by
3061 * the HBA. In case of errors, the ASC/ASCQ fields in the
3062 * sense buffer will be set accordingly, paired with
3063 * ILLEGAL_REQUEST to signal to the kernel that the HBA
3064 * detected corruption.
3067 * 0 - No error found
3068 * 1 - BlockGuard error found
3069 * -1 - Internal error (bad profile, ...etc)
3072 lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
3073 struct lpfc_iocbq *pIocbOut)
3075 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3076 struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
3078 uint32_t bghm = bgf->bghm;
3079 uint32_t bgstat = bgf->bgstat;
3080 uint64_t failing_sector = 0;
3082 spin_lock(&_dump_buf_lock);
3083 if (!_dump_buf_done) {
3084 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
3085 " Data for %u blocks to debugfs\n",
3086 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
3087 lpfc_debug_save_data(phba, cmd);
3089 /* If we have a prot sgl, save the DIF buffer */
3090 if (lpfc_prot_group_type(phba, cmd) ==
3091 LPFC_PG_TYPE_DIF_BUF) {
3092 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
3093 "Saving DIF for %u blocks to debugfs\n",
3094 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
3095 lpfc_debug_save_dif(phba, cmd);
3100 spin_unlock(&_dump_buf_lock);
3102 if (lpfc_bgs_get_invalid_prof(bgstat)) {
3103 cmd->result = ScsiResult(DID_ERROR, 0);
3104 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3105 "9072 BLKGRD: Invalid BG Profile in cmd"
3106 " 0x%x lba 0x%llx blk cnt 0x%x "
3107 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3108 (unsigned long long)scsi_get_lba(cmd),
3109 blk_rq_sectors(cmd->request), bgstat, bghm);
3114 if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
3115 cmd->result = ScsiResult(DID_ERROR, 0);
3116 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3117 "9073 BLKGRD: Invalid BG PDIF Block in cmd"
3118 " 0x%x lba 0x%llx blk cnt 0x%x "
3119 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3120 (unsigned long long)scsi_get_lba(cmd),
3121 blk_rq_sectors(cmd->request), bgstat, bghm);
3126 if (lpfc_bgs_get_guard_err(bgstat)) {
3129 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3131 cmd->result = DRIVER_SENSE << 24
3132 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3133 phba->bg_guard_err_cnt++;
3134 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3135 "9055 BLKGRD: Guard Tag error in cmd"
3136 " 0x%x lba 0x%llx blk cnt 0x%x "
3137 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3138 (unsigned long long)scsi_get_lba(cmd),
3139 blk_rq_sectors(cmd->request), bgstat, bghm);
3142 if (lpfc_bgs_get_reftag_err(bgstat)) {
3145 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3147 cmd->result = DRIVER_SENSE << 24
3148 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3150 phba->bg_reftag_err_cnt++;
3151 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3152 "9056 BLKGRD: Ref Tag error in cmd"
3153 " 0x%x lba 0x%llx blk cnt 0x%x "
3154 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3155 (unsigned long long)scsi_get_lba(cmd),
3156 blk_rq_sectors(cmd->request), bgstat, bghm);
3159 if (lpfc_bgs_get_apptag_err(bgstat)) {
3162 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3164 cmd->result = DRIVER_SENSE << 24
3165 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3167 phba->bg_apptag_err_cnt++;
3168 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3169 "9061 BLKGRD: App Tag error in cmd"
3170 " 0x%x lba 0x%llx blk cnt 0x%x "
3171 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3172 (unsigned long long)scsi_get_lba(cmd),
3173 blk_rq_sectors(cmd->request), bgstat, bghm);
3176 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
3178 * setup sense data descriptor 0 per SPC-4 as an information
3179 * field, and put the failing LBA in it.
3180 * This code assumes there was also a guard/app/ref tag error
3183 cmd->sense_buffer[7] = 0xc; /* Additional sense length */
3184 cmd->sense_buffer[8] = 0; /* Information descriptor type */
3185 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
3186 cmd->sense_buffer[10] = 0x80; /* Validity bit */
3188 /* bghm is a "on the wire" FC frame based count */
3189 switch (scsi_get_prot_op(cmd)) {
3190 case SCSI_PROT_READ_INSERT:
3191 case SCSI_PROT_WRITE_STRIP:
3192 bghm /= cmd->device->sector_size;
3194 case SCSI_PROT_READ_STRIP:
3195 case SCSI_PROT_WRITE_INSERT:
3196 case SCSI_PROT_READ_PASS:
3197 case SCSI_PROT_WRITE_PASS:
3198 bghm /= (cmd->device->sector_size +
3199 sizeof(struct scsi_dif_tuple));
3203 failing_sector = scsi_get_lba(cmd);
3204 failing_sector += bghm;
3206 /* Descriptor Information */
3207 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
3211 /* No error was reported - problem in FW? */
3212 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3213 "9057 BLKGRD: Unknown error in cmd"
3214 " 0x%x lba 0x%llx blk cnt 0x%x "
3215 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3216 (unsigned long long)scsi_get_lba(cmd),
3217 blk_rq_sectors(cmd->request), bgstat, bghm);
3219 /* Calcuate what type of error it was */
3220 lpfc_calc_bg_err(phba, lpfc_cmd);
3227 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3228 * @phba: The Hba for which this call is being executed.
3229 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3231 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3232 * field of @lpfc_cmd for device with SLI-4 interface spec.
3239 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3241 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3242 struct scatterlist *sgel = NULL;
3243 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3244 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
3245 struct sli4_sge *first_data_sgl;
3246 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3247 dma_addr_t physaddr;
3248 uint32_t num_bde = 0;
3250 uint32_t dma_offset = 0;
3252 struct ulp_bde64 *bde;
3255 * There are three possibilities here - use scatter-gather segment, use
3256 * the single mapping, or neither. Start the lpfc command prep by
3257 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
3260 if (scsi_sg_count(scsi_cmnd)) {
3262 * The driver stores the segment count returned from pci_map_sg
3263 * because this a count of dma-mappings used to map the use_sg
3264 * pages. They are not guaranteed to be the same for those
3265 * architectures that implement an IOMMU.
3268 nseg = scsi_dma_map(scsi_cmnd);
3269 if (unlikely(nseg <= 0))
3272 /* clear the last flag in the fcp_rsp map entry */
3273 sgl->word2 = le32_to_cpu(sgl->word2);
3274 bf_set(lpfc_sli4_sge_last, sgl, 0);
3275 sgl->word2 = cpu_to_le32(sgl->word2);
3277 first_data_sgl = sgl;
3278 lpfc_cmd->seg_cnt = nseg;
3279 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
3280 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
3281 " %s: Too many sg segments from "
3282 "dma_map_sg. Config %d, seg_cnt %d\n",
3283 __func__, phba->cfg_sg_seg_cnt,
3285 lpfc_cmd->seg_cnt = 0;
3286 scsi_dma_unmap(scsi_cmnd);
3291 * The driver established a maximum scatter-gather segment count
3292 * during probe that limits the number of sg elements in any
3293 * single scsi command. Just run through the seg_cnt and format
3295 * When using SLI-3 the driver will try to fit all the BDEs into
3296 * the IOCB. If it can't then the BDEs get added to a BPL as it
3297 * does for SLI-2 mode.
3299 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
3300 physaddr = sg_dma_address(sgel);
3301 dma_len = sg_dma_len(sgel);
3302 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
3303 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
3304 sgl->word2 = le32_to_cpu(sgl->word2);
3305 if ((num_bde + 1) == nseg)
3306 bf_set(lpfc_sli4_sge_last, sgl, 1);
3308 bf_set(lpfc_sli4_sge_last, sgl, 0);
3309 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
3310 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
3311 sgl->word2 = cpu_to_le32(sgl->word2);
3312 sgl->sge_len = cpu_to_le32(dma_len);
3313 dma_offset += dma_len;
3316 /* setup the performance hint (first data BDE) if enabled */
3317 if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) {
3318 bde = (struct ulp_bde64 *)
3319 &(iocb_cmd->unsli3.sli3Words[5]);
3320 bde->addrLow = first_data_sgl->addr_lo;
3321 bde->addrHigh = first_data_sgl->addr_hi;
3322 bde->tus.f.bdeSize =
3323 le32_to_cpu(first_data_sgl->sge_len);
3324 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3325 bde->tus.w = cpu_to_le32(bde->tus.w);
3329 /* clear the last flag in the fcp_rsp map entry */
3330 sgl->word2 = le32_to_cpu(sgl->word2);
3331 bf_set(lpfc_sli4_sge_last, sgl, 1);
3332 sgl->word2 = cpu_to_le32(sgl->word2);
3336 * Finish initializing those IOCB fields that are dependent on the
3337 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
3338 * explicitly reinitialized.
3339 * all iocb memory resources are reused.
3341 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
3344 * Due to difference in data length between DIF/non-DIF paths,
3345 * we need to set word 4 of IOCB here
3347 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
3350 * If the OAS driver feature is enabled and the lun is enabled for
3351 * OAS, set the oas iocb related flags.
3353 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
3354 scsi_cmnd->device->hostdata)->oas_enabled) {
3355 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
3356 lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *)
3357 scsi_cmnd->device->hostdata)->priority;
3363 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3364 * @phba: The Hba for which this call is being executed.
3365 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3367 * This is the protection/DIF aware version of
3368 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
3369 * two functions eventually, but for now, it's here
3372 lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
3373 struct lpfc_scsi_buf *lpfc_cmd)
3375 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3376 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3377 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl);
3378 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3379 uint32_t num_sge = 0;
3380 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
3381 int prot_group_type = 0;
3383 struct lpfc_vport *vport = phba->pport;
3386 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
3387 * fcp_rsp regions to the first data sge entry
3389 if (scsi_sg_count(scsi_cmnd)) {
3391 * The driver stores the segment count returned from pci_map_sg
3392 * because this a count of dma-mappings used to map the use_sg
3393 * pages. They are not guaranteed to be the same for those
3394 * architectures that implement an IOMMU.
3396 datasegcnt = dma_map_sg(&phba->pcidev->dev,
3397 scsi_sglist(scsi_cmnd),
3398 scsi_sg_count(scsi_cmnd), datadir);
3399 if (unlikely(!datasegcnt))
3403 /* clear the last flag in the fcp_rsp map entry */
3404 sgl->word2 = le32_to_cpu(sgl->word2);
3405 bf_set(lpfc_sli4_sge_last, sgl, 0);
3406 sgl->word2 = cpu_to_le32(sgl->word2);
3409 lpfc_cmd->seg_cnt = datasegcnt;
3411 /* First check if data segment count from SCSI Layer is good */
3412 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
3415 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
3417 switch (prot_group_type) {
3418 case LPFC_PG_TYPE_NO_DIF:
3419 /* Here we need to add a DISEED to the count */
3420 if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt)
3423 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
3426 /* we should have 2 or more entries in buffer list */
3431 case LPFC_PG_TYPE_DIF_BUF:
3433 * This type indicates that protection buffers are
3434 * passed to the driver, so that needs to be prepared
3437 protsegcnt = dma_map_sg(&phba->pcidev->dev,
3438 scsi_prot_sglist(scsi_cmnd),
3439 scsi_prot_sg_count(scsi_cmnd), datadir);
3440 if (unlikely(!protsegcnt)) {
3441 scsi_dma_unmap(scsi_cmnd);
3445 lpfc_cmd->prot_seg_cnt = protsegcnt;
3447 * There is a minimun of 3 SGEs used for every
3448 * protection data segment.
3450 if ((lpfc_cmd->prot_seg_cnt * 3) >
3451 (phba->cfg_total_seg_cnt - 2))
3454 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
3455 datasegcnt, protsegcnt);
3457 /* we should have 3 or more entries in buffer list */
3458 if ((num_sge < 3) ||
3459 (num_sge > phba->cfg_total_seg_cnt))
3463 case LPFC_PG_TYPE_INVALID:
3465 scsi_dma_unmap(scsi_cmnd);
3466 lpfc_cmd->seg_cnt = 0;
3468 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3469 "9083 Unexpected protection group %i\n",
3475 switch (scsi_get_prot_op(scsi_cmnd)) {
3476 case SCSI_PROT_WRITE_STRIP:
3477 case SCSI_PROT_READ_STRIP:
3478 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
3480 case SCSI_PROT_WRITE_INSERT:
3481 case SCSI_PROT_READ_INSERT:
3482 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
3484 case SCSI_PROT_WRITE_PASS:
3485 case SCSI_PROT_READ_PASS:
3486 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
3490 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
3491 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
3494 * Due to difference in data length between DIF/non-DIF paths,
3495 * we need to set word 4 of IOCB here
3497 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
3500 * For First burst, we may need to adjust the initial transfer
3503 if (iocb_cmd->un.fcpi.fcpi_XRdy &&
3504 (fcpdl < vport->cfg_first_burst_size))
3505 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
3508 * If the OAS driver feature is enabled and the lun is enabled for
3509 * OAS, set the oas iocb related flags.
3511 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
3512 scsi_cmnd->device->hostdata)->oas_enabled)
3513 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
3517 if (lpfc_cmd->seg_cnt)
3518 scsi_dma_unmap(scsi_cmnd);
3519 if (lpfc_cmd->prot_seg_cnt)
3520 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
3521 scsi_prot_sg_count(scsi_cmnd),
3522 scsi_cmnd->sc_data_direction);
3524 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3525 "9084 Cannot setup S/G List for HBA"
3526 "IO segs %d/%d SGL %d SCSI %d: %d %d\n",
3527 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
3528 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
3529 prot_group_type, num_sge);
3531 lpfc_cmd->seg_cnt = 0;
3532 lpfc_cmd->prot_seg_cnt = 0;
3537 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3538 * @phba: The Hba for which this call is being executed.
3539 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3541 * This routine wraps the actual DMA mapping function pointer from the
3549 lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3551 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
3555 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3557 * @phba: The Hba for which this call is being executed.
3558 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3560 * This routine wraps the actual DMA mapping function pointer from the
3568 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3570 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
3574 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
3575 * @phba: Pointer to hba context object.
3576 * @vport: Pointer to vport object.
3577 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
3578 * @rsp_iocb: Pointer to response iocb object which reported error.
3580 * This function posts an event when there is a SCSI command reporting
3581 * error from the scsi device.
3584 lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
3585 struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
3586 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3587 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3588 uint32_t resp_info = fcprsp->rspStatus2;
3589 uint32_t scsi_status = fcprsp->rspStatus3;
3590 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3591 struct lpfc_fast_path_event *fast_path_evt = NULL;
3592 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
3593 unsigned long flags;
3595 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
3598 /* If there is queuefull or busy condition send a scsi event */
3599 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
3600 (cmnd->result == SAM_STAT_BUSY)) {
3601 fast_path_evt = lpfc_alloc_fast_evt(phba);
3604 fast_path_evt->un.scsi_evt.event_type =
3606 fast_path_evt->un.scsi_evt.subcategory =
3607 (cmnd->result == SAM_STAT_TASK_SET_FULL) ?
3608 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
3609 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
3610 memcpy(&fast_path_evt->un.scsi_evt.wwpn,
3611 &pnode->nlp_portname, sizeof(struct lpfc_name));
3612 memcpy(&fast_path_evt->un.scsi_evt.wwnn,
3613 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3614 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
3615 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
3616 fast_path_evt = lpfc_alloc_fast_evt(phba);
3619 fast_path_evt->un.check_cond_evt.scsi_event.event_type =
3621 fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
3622 LPFC_EVENT_CHECK_COND;
3623 fast_path_evt->un.check_cond_evt.scsi_event.lun =
3625 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
3626 &pnode->nlp_portname, sizeof(struct lpfc_name));
3627 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
3628 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3629 fast_path_evt->un.check_cond_evt.sense_key =
3630 cmnd->sense_buffer[2] & 0xf;
3631 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
3632 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
3633 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3635 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
3636 ((scsi_status == SAM_STAT_GOOD) &&
3637 !(resp_info & (RESID_UNDER | RESID_OVER))))) {
3639 * If status is good or resid does not match with fcp_param and
3640 * there is valid fcpi_parm, then there is a read_check error
3642 fast_path_evt = lpfc_alloc_fast_evt(phba);
3645 fast_path_evt->un.read_check_error.header.event_type =
3646 FC_REG_FABRIC_EVENT;
3647 fast_path_evt->un.read_check_error.header.subcategory =
3648 LPFC_EVENT_FCPRDCHKERR;
3649 memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
3650 &pnode->nlp_portname, sizeof(struct lpfc_name));
3651 memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
3652 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3653 fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
3654 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
3655 fast_path_evt->un.read_check_error.fcpiparam =
3660 fast_path_evt->vport = vport;
3661 spin_lock_irqsave(&phba->hbalock, flags);
3662 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
3663 spin_unlock_irqrestore(&phba->hbalock, flags);
3664 lpfc_worker_wake_up(phba);
3669 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
3670 * @phba: The HBA for which this call is being executed.
3671 * @psb: The scsi buffer which is going to be un-mapped.
3673 * This routine does DMA un-mapping of scatter gather list of scsi command
3674 * field of @lpfc_cmd for device with SLI-3 interface spec.
3677 lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
3680 * There are only two special cases to consider. (1) the scsi command
3681 * requested scatter-gather usage or (2) the scsi command allocated
3682 * a request buffer, but did not request use_sg. There is a third
3683 * case, but it does not require resource deallocation.
3685 if (psb->seg_cnt > 0)
3686 scsi_dma_unmap(psb->pCmd);
3687 if (psb->prot_seg_cnt > 0)
3688 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
3689 scsi_prot_sg_count(psb->pCmd),
3690 psb->pCmd->sc_data_direction);
3694 * lpfc_handler_fcp_err - FCP response handler
3695 * @vport: The virtual port for which this call is being executed.
3696 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
3697 * @rsp_iocb: The response IOCB which contains FCP error.
3699 * This routine is called to process response IOCB with status field
3700 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
3701 * based upon SCSI and FCP error.
3704 lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
3705 struct lpfc_iocbq *rsp_iocb)
3707 struct lpfc_hba *phba = vport->phba;
3708 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3709 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
3710 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3711 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3712 uint32_t resp_info = fcprsp->rspStatus2;
3713 uint32_t scsi_status = fcprsp->rspStatus3;
3715 uint32_t host_status = DID_OK;
3716 uint32_t rsplen = 0;
3718 uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
3722 * If this is a task management command, there is no
3723 * scsi packet associated with this lpfc_cmd. The driver
3726 if (fcpcmd->fcpCntl2) {
3731 if (resp_info & RSP_LEN_VALID) {
3732 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3733 if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
3734 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3735 "2719 Invalid response length: "
3736 "tgt x%x lun x%llx cmnd x%x rsplen x%x\n",
3738 cmnd->device->lun, cmnd->cmnd[0],
3740 host_status = DID_ERROR;
3743 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
3744 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3745 "2757 Protocol failure detected during "
3746 "processing of FCP I/O op: "
3747 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n",
3749 cmnd->device->lun, cmnd->cmnd[0],
3751 host_status = DID_ERROR;
3756 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
3757 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
3758 if (snslen > SCSI_SENSE_BUFFERSIZE)
3759 snslen = SCSI_SENSE_BUFFERSIZE;
3761 if (resp_info & RSP_LEN_VALID)
3762 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3763 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
3765 lp = (uint32_t *)cmnd->sense_buffer;
3767 /* special handling for under run conditions */
3768 if (!scsi_status && (resp_info & RESID_UNDER)) {
3769 /* don't log under runs if fcp set... */
3770 if (vport->cfg_log_verbose & LOG_FCP)
3771 logit = LOG_FCP_ERROR;
3772 /* unless operator says so */
3773 if (vport->cfg_log_verbose & LOG_FCP_UNDER)
3774 logit = LOG_FCP_UNDER;
3777 lpfc_printf_vlog(vport, KERN_WARNING, logit,
3778 "9024 FCP command x%x failed: x%x SNS x%x x%x "
3779 "Data: x%x x%x x%x x%x x%x\n",
3780 cmnd->cmnd[0], scsi_status,
3781 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
3782 be32_to_cpu(fcprsp->rspResId),
3783 be32_to_cpu(fcprsp->rspSnsLen),
3784 be32_to_cpu(fcprsp->rspRspLen),
3787 scsi_set_resid(cmnd, 0);
3788 fcpDl = be32_to_cpu(fcpcmd->fcpDl);
3789 if (resp_info & RESID_UNDER) {
3790 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
3792 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
3793 "9025 FCP Read Underrun, expected %d, "
3794 "residual %d Data: x%x x%x x%x\n",
3796 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
3800 * If there is an under run check if under run reported by
3801 * storage array is same as the under run reported by HBA.
3802 * If this is not same, there is a dropped frame.
3804 if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3806 (scsi_get_resid(cmnd) != fcpi_parm)) {
3807 lpfc_printf_vlog(vport, KERN_WARNING,
3808 LOG_FCP | LOG_FCP_ERROR,
3809 "9026 FCP Read Check Error "
3810 "and Underrun Data: x%x x%x x%x x%x\n",
3812 scsi_get_resid(cmnd), fcpi_parm,
3814 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
3815 host_status = DID_ERROR;
3818 * The cmnd->underflow is the minimum number of bytes that must
3819 * be transferred for this command. Provided a sense condition
3820 * is not present, make sure the actual amount transferred is at
3821 * least the underflow value or fail.
3823 if (!(resp_info & SNS_LEN_VALID) &&
3824 (scsi_status == SAM_STAT_GOOD) &&
3825 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
3826 < cmnd->underflow)) {
3827 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
3828 "9027 FCP command x%x residual "
3829 "underrun converted to error "
3830 "Data: x%x x%x x%x\n",
3831 cmnd->cmnd[0], scsi_bufflen(cmnd),
3832 scsi_get_resid(cmnd), cmnd->underflow);
3833 host_status = DID_ERROR;
3835 } else if (resp_info & RESID_OVER) {
3836 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
3837 "9028 FCP command x%x residual overrun error. "
3838 "Data: x%x x%x\n", cmnd->cmnd[0],
3839 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
3840 host_status = DID_ERROR;
3843 * Check SLI validation that all the transfer was actually done
3844 * (fcpi_parm should be zero). Apply check only to reads.
3846 } else if (fcpi_parm) {
3847 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
3848 "9029 FCP %s Check Error xri x%x Data: "
3849 "x%x x%x x%x x%x x%x\n",
3850 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ?
3852 ((phba->sli_rev == LPFC_SLI_REV4) ?
3853 lpfc_cmd->cur_iocbq.sli4_xritag :
3854 rsp_iocb->iocb.ulpContext),
3855 fcpDl, be32_to_cpu(fcprsp->rspResId),
3856 fcpi_parm, cmnd->cmnd[0], scsi_status);
3858 /* There is some issue with the LPe12000 that causes it
3859 * to miscalculate the fcpi_parm and falsely trip this
3860 * recovery logic. Detect this case and don't error when true.
3862 if (fcpi_parm > fcpDl)
3865 switch (scsi_status) {
3867 case SAM_STAT_CHECK_CONDITION:
3868 /* Fabric dropped a data frame. Fail any successful
3869 * command in which we detected dropped frames.
3870 * A status of good or some check conditions could
3871 * be considered a successful command.
3873 host_status = DID_ERROR;
3876 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
3880 cmnd->result = ScsiResult(host_status, scsi_status);
3881 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
3885 * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution
3886 * @phba: Pointer to HBA context object.
3888 * This routine performs a roundrobin SCSI command to SLI4 FCP WQ index
3889 * distribution. This is called by __lpfc_sli_issue_iocb_s4() with the hbalock
3891 * If scsi-mq is enabled, get the default block layer mapping of software queues
3892 * to hardware queues. This information is saved in request tag.
3894 * Return: index into SLI4 fast-path FCP queue index.
3896 int lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba,
3897 struct lpfc_scsi_buf *lpfc_cmd)
3899 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3900 struct lpfc_vector_map_info *cpup;
3905 if (cmnd && shost_use_blk_mq(cmnd->device->host)) {
3906 tag = blk_mq_unique_tag(cmnd->request);
3907 hwq = blk_mq_unique_tag_to_hwq(tag);
3912 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_CPU
3913 && phba->cfg_fcp_io_channel > 1) {
3914 cpu = smp_processor_id();
3915 if (cpu < phba->sli4_hba.num_present_cpu) {
3916 cpup = phba->sli4_hba.cpu_map;
3918 return cpup->channel_id;
3921 chann = atomic_add_return(1, &phba->fcp_qidx);
3922 chann = chann % phba->cfg_fcp_io_channel;
3928 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
3929 * @phba: The Hba for which this call is being executed.
3930 * @pIocbIn: The command IOCBQ for the scsi cmnd.
3931 * @pIocbOut: The response IOCBQ for the scsi cmnd.
3933 * This routine assigns scsi command result by looking into response IOCB
3934 * status field appropriately. This routine handles QUEUE FULL condition as
3935 * well by ramping down device queue depth.
3938 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
3939 struct lpfc_iocbq *pIocbOut)
3941 struct lpfc_scsi_buf *lpfc_cmd =
3942 (struct lpfc_scsi_buf *) pIocbIn->context1;
3943 struct lpfc_vport *vport = pIocbIn->vport;
3944 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
3945 struct lpfc_nodelist *pnode = rdata->pnode;
3946 struct scsi_cmnd *cmd;
3948 unsigned long flags;
3949 struct lpfc_fast_path_event *fast_path_evt;
3950 struct Scsi_Host *shost;
3951 uint32_t logit = LOG_FCP;
3953 atomic_inc(&phba->fc4ScsiIoCmpls);
3955 /* Sanity check on return of outstanding command */
3956 cmd = lpfc_cmd->pCmd;
3959 shost = cmd->device->host;
3961 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
3962 lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
3963 /* pick up SLI4 exhange busy status from HBA */
3964 lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
3966 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3967 if (lpfc_cmd->prot_data_type) {
3968 struct scsi_dif_tuple *src = NULL;
3970 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
3972 * Used to restore any changes to protection
3973 * data for error injection.
3975 switch (lpfc_cmd->prot_data_type) {
3976 case LPFC_INJERR_REFTAG:
3978 lpfc_cmd->prot_data;
3980 case LPFC_INJERR_APPTAG:
3982 (uint16_t)lpfc_cmd->prot_data;
3984 case LPFC_INJERR_GUARD:
3986 (uint16_t)lpfc_cmd->prot_data;
3992 lpfc_cmd->prot_data = 0;
3993 lpfc_cmd->prot_data_type = 0;
3994 lpfc_cmd->prot_data_segment = NULL;
3998 if (pnode && NLP_CHK_NODE_ACT(pnode))
3999 atomic_dec(&pnode->cmd_pending);
4001 if (lpfc_cmd->status) {
4002 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
4003 (lpfc_cmd->result & IOERR_DRVR_MASK))
4004 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
4005 else if (lpfc_cmd->status >= IOSTAT_CNT)
4006 lpfc_cmd->status = IOSTAT_DEFAULT;
4007 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
4008 !lpfc_cmd->fcp_rsp->rspStatus3 &&
4009 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
4010 !(vport->cfg_log_verbose & LOG_FCP_UNDER))
4013 logit = LOG_FCP | LOG_FCP_UNDER;
4014 lpfc_printf_vlog(vport, KERN_WARNING, logit,
4015 "9030 FCP cmd x%x failed <%d/%lld> "
4016 "status: x%x result: x%x "
4017 "sid: x%x did: x%x oxid: x%x "
4020 cmd->device ? cmd->device->id : 0xffff,
4021 cmd->device ? cmd->device->lun : 0xffff,
4022 lpfc_cmd->status, lpfc_cmd->result,
4024 (pnode) ? pnode->nlp_DID : 0,
4025 phba->sli_rev == LPFC_SLI_REV4 ?
4026 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
4027 pIocbOut->iocb.ulpContext,
4028 lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
4030 switch (lpfc_cmd->status) {
4031 case IOSTAT_FCP_RSP_ERROR:
4032 /* Call FCP RSP handler to determine result */
4033 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
4035 case IOSTAT_NPORT_BSY:
4036 case IOSTAT_FABRIC_BSY:
4037 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0);
4038 fast_path_evt = lpfc_alloc_fast_evt(phba);
4041 fast_path_evt->un.fabric_evt.event_type =
4042 FC_REG_FABRIC_EVENT;
4043 fast_path_evt->un.fabric_evt.subcategory =
4044 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
4045 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
4046 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4047 memcpy(&fast_path_evt->un.fabric_evt.wwpn,
4048 &pnode->nlp_portname,
4049 sizeof(struct lpfc_name));
4050 memcpy(&fast_path_evt->un.fabric_evt.wwnn,
4051 &pnode->nlp_nodename,
4052 sizeof(struct lpfc_name));
4054 fast_path_evt->vport = vport;
4055 fast_path_evt->work_evt.evt =
4056 LPFC_EVT_FASTPATH_MGMT_EVT;
4057 spin_lock_irqsave(&phba->hbalock, flags);
4058 list_add_tail(&fast_path_evt->work_evt.evt_listp,
4060 spin_unlock_irqrestore(&phba->hbalock, flags);
4061 lpfc_worker_wake_up(phba);
4063 case IOSTAT_LOCAL_REJECT:
4064 case IOSTAT_REMOTE_STOP:
4065 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
4067 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
4068 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
4070 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
4071 cmd->result = ScsiResult(DID_NO_CONNECT, 0);
4074 if (lpfc_cmd->result == IOERR_INVALID_RPI ||
4075 lpfc_cmd->result == IOERR_NO_RESOURCES ||
4076 lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
4077 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
4078 cmd->result = ScsiResult(DID_REQUEUE, 0);
4081 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
4082 lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
4083 pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
4084 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
4086 * This is a response for a BG enabled
4087 * cmd. Parse BG error
4089 lpfc_parse_bg_err(phba, lpfc_cmd,
4093 lpfc_printf_vlog(vport, KERN_WARNING,
4095 "9031 non-zero BGSTAT "
4096 "on unprotected cmd\n");
4099 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
4100 && (phba->sli_rev == LPFC_SLI_REV4)
4101 && (pnode && NLP_CHK_NODE_ACT(pnode))) {
4102 /* This IO was aborted by the target, we don't
4103 * know the rxid and because we did not send the
4104 * ABTS we cannot generate and RRQ.
4106 lpfc_set_rrq_active(phba, pnode,
4107 lpfc_cmd->cur_iocbq.sli4_lxritag,
4110 /* else: fall through */
4112 cmd->result = ScsiResult(DID_ERROR, 0);
4116 if (!pnode || !NLP_CHK_NODE_ACT(pnode)
4117 || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
4118 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED,
4121 cmd->result = ScsiResult(DID_OK, 0);
4123 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
4124 uint32_t *lp = (uint32_t *)cmd->sense_buffer;
4126 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4127 "0710 Iodone <%d/%llu> cmd %p, error "
4128 "x%x SNS x%x x%x Data: x%x x%x\n",
4129 cmd->device->id, cmd->device->lun, cmd,
4130 cmd->result, *lp, *(lp + 3), cmd->retries,
4131 scsi_get_resid(cmd));
4134 lpfc_update_stats(phba, lpfc_cmd);
4135 if (vport->cfg_max_scsicmpl_time &&
4136 time_after(jiffies, lpfc_cmd->start_time +
4137 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
4138 spin_lock_irqsave(shost->host_lock, flags);
4139 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4140 if (pnode->cmd_qdepth >
4141 atomic_read(&pnode->cmd_pending) &&
4142 (atomic_read(&pnode->cmd_pending) >
4143 LPFC_MIN_TGT_QDEPTH) &&
4144 ((cmd->cmnd[0] == READ_10) ||
4145 (cmd->cmnd[0] == WRITE_10)))
4147 atomic_read(&pnode->cmd_pending);
4149 pnode->last_change_time = jiffies;
4151 spin_unlock_irqrestore(shost->host_lock, flags);
4152 } else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4153 if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) &&
4154 time_after(jiffies, pnode->last_change_time +
4155 msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
4156 spin_lock_irqsave(shost->host_lock, flags);
4157 depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT
4159 depth = depth ? depth : 1;
4160 pnode->cmd_qdepth += depth;
4161 if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth)
4162 pnode->cmd_qdepth = vport->cfg_tgt_queue_depth;
4163 pnode->last_change_time = jiffies;
4164 spin_unlock_irqrestore(shost->host_lock, flags);
4168 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
4170 /* If pCmd was set to NULL from abort path, do not call scsi_done */
4171 if (xchg(&lpfc_cmd->pCmd, NULL) == NULL) {
4172 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4173 "5688 FCP cmd already NULL, sid: 0x%06x, "
4174 "did: 0x%06x, oxid: 0x%04x\n",
4176 (pnode) ? pnode->nlp_DID : 0,
4177 phba->sli_rev == LPFC_SLI_REV4 ?
4178 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff);
4182 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
4183 cmd->scsi_done(cmd);
4186 * If there is a thread waiting for command completion
4187 * wake up the thread.
4189 spin_lock_irqsave(shost->host_lock, flags);
4190 if (lpfc_cmd->waitq)
4191 wake_up(lpfc_cmd->waitq);
4192 spin_unlock_irqrestore(shost->host_lock, flags);
4194 lpfc_release_scsi_buf(phba, lpfc_cmd);
4198 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
4199 * @data: A pointer to the immediate command data portion of the IOCB.
4200 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
4202 * The routine copies the entire FCP command from @fcp_cmnd to @data while
4203 * byte swapping the data to big endian format for transmission on the wire.
4206 lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
4209 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
4210 i += sizeof(uint32_t), j++) {
4211 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
4216 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
4217 * @vport: The virtual port for which this call is being executed.
4218 * @lpfc_cmd: The scsi command which needs to send.
4219 * @pnode: Pointer to lpfc_nodelist.
4221 * This routine initializes fcp_cmnd and iocb data structure from scsi command
4222 * to transfer for device with SLI3 interface spec.
4225 lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
4226 struct lpfc_nodelist *pnode)
4228 struct lpfc_hba *phba = vport->phba;
4229 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
4230 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
4231 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
4232 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
4233 int datadir = scsi_cmnd->sc_data_direction;
4238 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
4241 lpfc_cmd->fcp_rsp->rspSnsLen = 0;
4242 /* clear task management bits */
4243 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
4245 int_to_scsilun(lpfc_cmd->pCmd->device->lun,
4246 &lpfc_cmd->fcp_cmnd->fcp_lun);
4248 ptr = &fcp_cmnd->fcpCdb[0];
4249 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
4250 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
4251 ptr += scsi_cmnd->cmd_len;
4252 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
4255 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
4257 sli4 = (phba->sli_rev == LPFC_SLI_REV4);
4258 piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
4261 * There are three possibilities here - use scatter-gather segment, use
4262 * the single mapping, or neither. Start the lpfc command prep by
4263 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
4266 if (scsi_sg_count(scsi_cmnd)) {
4267 if (datadir == DMA_TO_DEVICE) {
4268 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
4269 iocb_cmd->ulpPU = PARM_READ_CHECK;
4270 if (vport->cfg_first_burst_size &&
4271 (pnode->nlp_flag & NLP_FIRSTBURST)) {
4272 fcpdl = scsi_bufflen(scsi_cmnd);
4273 if (fcpdl < vport->cfg_first_burst_size)
4274 piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl;
4276 piocbq->iocb.un.fcpi.fcpi_XRdy =
4277 vport->cfg_first_burst_size;
4279 fcp_cmnd->fcpCntl3 = WRITE_DATA;
4280 atomic_inc(&phba->fc4ScsiOutputRequests);
4282 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
4283 iocb_cmd->ulpPU = PARM_READ_CHECK;
4284 fcp_cmnd->fcpCntl3 = READ_DATA;
4285 atomic_inc(&phba->fc4ScsiInputRequests);
4288 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
4289 iocb_cmd->un.fcpi.fcpi_parm = 0;
4290 iocb_cmd->ulpPU = 0;
4291 fcp_cmnd->fcpCntl3 = 0;
4292 atomic_inc(&phba->fc4ScsiControlRequests);
4294 if (phba->sli_rev == 3 &&
4295 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
4296 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
4298 * Finish initializing those IOCB fields that are independent
4299 * of the scsi_cmnd request_buffer
4301 piocbq->iocb.ulpContext = pnode->nlp_rpi;
4303 piocbq->iocb.ulpContext =
4304 phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
4305 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
4306 piocbq->iocb.ulpFCP2Rcvy = 1;
4308 piocbq->iocb.ulpFCP2Rcvy = 0;
4310 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
4311 piocbq->context1 = lpfc_cmd;
4312 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4313 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
4314 piocbq->vport = vport;
4318 * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit
4319 * @vport: The virtual port for which this call is being executed.
4320 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4321 * @lun: Logical unit number.
4322 * @task_mgmt_cmd: SCSI task management command.
4324 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
4325 * for device with SLI-3 interface spec.
4332 lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
4333 struct lpfc_scsi_buf *lpfc_cmd,
4335 uint8_t task_mgmt_cmd)
4337 struct lpfc_iocbq *piocbq;
4339 struct fcp_cmnd *fcp_cmnd;
4340 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
4341 struct lpfc_nodelist *ndlp = rdata->pnode;
4343 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
4344 ndlp->nlp_state != NLP_STE_MAPPED_NODE)
4347 piocbq = &(lpfc_cmd->cur_iocbq);
4348 piocbq->vport = vport;
4350 piocb = &piocbq->iocb;
4352 fcp_cmnd = lpfc_cmd->fcp_cmnd;
4353 /* Clear out any old data in the FCP command area */
4354 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
4355 int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
4356 fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
4357 if (vport->phba->sli_rev == 3 &&
4358 !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
4359 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
4360 piocb->ulpCommand = CMD_FCP_ICMND64_CR;
4361 piocb->ulpContext = ndlp->nlp_rpi;
4362 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4364 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4366 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0;
4367 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
4369 piocb->un.fcpi.fcpi_parm = 0;
4371 /* ulpTimeout is only one byte */
4372 if (lpfc_cmd->timeout > 0xff) {
4374 * Do not timeout the command at the firmware level.
4375 * The driver will provide the timeout mechanism.
4377 piocb->ulpTimeout = 0;
4379 piocb->ulpTimeout = lpfc_cmd->timeout;
4381 if (vport->phba->sli_rev == LPFC_SLI_REV4)
4382 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
4388 * lpfc_scsi_api_table_setup - Set up scsi api function jump table
4389 * @phba: The hba struct for which this call is being executed.
4390 * @dev_grp: The HBA PCI-Device group number.
4392 * This routine sets up the SCSI interface API function jump table in @phba
4394 * Returns: 0 - success, -ENODEV - failure.
4397 lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4400 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
4401 phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
4404 case LPFC_PCI_DEV_LP:
4405 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
4406 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
4407 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
4408 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
4409 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
4411 case LPFC_PCI_DEV_OC:
4412 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
4413 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
4414 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
4415 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
4416 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
4419 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4420 "1418 Invalid HBA PCI-device group: 0x%x\n",
4425 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
4426 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4431 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
4432 * @phba: The Hba for which this call is being executed.
4433 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
4434 * @rspiocbq: Pointer to lpfc_iocbq data structure.
4436 * This routine is IOCB completion routine for device reset and target reset
4437 * routine. This routine release scsi buffer associated with lpfc_cmd.
4440 lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
4441 struct lpfc_iocbq *cmdiocbq,
4442 struct lpfc_iocbq *rspiocbq)
4444 struct lpfc_scsi_buf *lpfc_cmd =
4445 (struct lpfc_scsi_buf *) cmdiocbq->context1;
4447 lpfc_release_scsi_buf(phba, lpfc_cmd);
4452 * lpfc_info - Info entry point of scsi_host_template data structure
4453 * @host: The scsi host for which this call is being executed.
4455 * This routine provides module information about hba.
4458 * Pointer to char - Success.
4461 lpfc_info(struct Scsi_Host *host)
4463 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
4464 struct lpfc_hba *phba = vport->phba;
4465 int len, link_speed = 0;
4466 static char lpfcinfobuf[384];
4468 memset(lpfcinfobuf,0,384);
4469 if (phba && phba->pcidev){
4470 strncpy(lpfcinfobuf, phba->ModelDesc, 256);
4471 len = strlen(lpfcinfobuf);
4472 snprintf(lpfcinfobuf + len,
4474 " on PCI bus %02x device %02x irq %d",
4475 phba->pcidev->bus->number,
4476 phba->pcidev->devfn,
4478 len = strlen(lpfcinfobuf);
4479 if (phba->Port[0]) {
4480 snprintf(lpfcinfobuf + len,
4485 len = strlen(lpfcinfobuf);
4486 link_speed = lpfc_sli_port_speed_get(phba);
4487 if (link_speed != 0)
4488 snprintf(lpfcinfobuf + len, 384-len,
4489 " Logical Link Speed: %d Mbps", link_speed);
4495 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
4496 * @phba: The Hba for which this call is being executed.
4498 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
4499 * The default value of cfg_poll_tmo is 10 milliseconds.
4501 static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
4503 unsigned long poll_tmo_expires =
4504 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
4506 if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq))
4507 mod_timer(&phba->fcp_poll_timer,
4512 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
4513 * @phba: The Hba for which this call is being executed.
4515 * This routine starts the fcp_poll_timer of @phba.
4517 void lpfc_poll_start_timer(struct lpfc_hba * phba)
4519 lpfc_poll_rearm_timer(phba);
4523 * lpfc_poll_timeout - Restart polling timer
4524 * @ptr: Map to lpfc_hba data structure pointer.
4526 * This routine restarts fcp_poll timer, when FCP ring polling is enable
4527 * and FCP Ring interrupt is disable.
4530 void lpfc_poll_timeout(unsigned long ptr)
4532 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
4534 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4535 lpfc_sli_handle_fast_ring_event(phba,
4536 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
4538 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4539 lpfc_poll_rearm_timer(phba);
4544 * lpfc_queuecommand - scsi_host_template queuecommand entry point
4545 * @cmnd: Pointer to scsi_cmnd data structure.
4546 * @done: Pointer to done routine.
4548 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
4549 * This routine prepares an IOCB from scsi command and provides to firmware.
4550 * The @done callback is invoked after driver finished processing the command.
4554 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
4557 lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
4559 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4560 struct lpfc_hba *phba = vport->phba;
4561 struct lpfc_rport_data *rdata;
4562 struct lpfc_nodelist *ndlp;
4563 struct lpfc_scsi_buf *lpfc_cmd;
4564 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
4567 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
4568 err = fc_remote_port_chkready(rport);
4571 goto out_fail_command;
4573 ndlp = rdata->pnode;
4575 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
4576 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
4578 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
4579 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
4580 " op:%02x str=%s without registering for"
4581 " BlockGuard - Rejecting command\n",
4582 cmnd->cmnd[0], scsi_get_prot_op(cmnd),
4583 dif_op_str[scsi_get_prot_op(cmnd)]);
4584 goto out_fail_command;
4588 * Catch race where our node has transitioned, but the
4589 * transport is still transitioning.
4591 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
4593 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
4596 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
4597 if (lpfc_cmd == NULL) {
4598 lpfc_rampdown_queue_depth(phba);
4600 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
4601 "0707 driver's buffer pool is empty, "
4607 * Store the midlayer's command structure for the completion phase
4608 * and complete the command initialization.
4610 lpfc_cmd->pCmd = cmnd;
4611 lpfc_cmd->rdata = rdata;
4612 lpfc_cmd->timeout = 0;
4613 lpfc_cmd->start_time = jiffies;
4614 cmnd->host_scribble = (unsigned char *)lpfc_cmd;
4616 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
4617 if (vport->phba->cfg_enable_bg) {
4618 lpfc_printf_vlog(vport,
4619 KERN_INFO, LOG_SCSI_CMD,
4620 "9033 BLKGRD: rcvd %s cmd:x%x "
4621 "sector x%llx cnt %u pt %x\n",
4622 dif_op_str[scsi_get_prot_op(cmnd)],
4624 (unsigned long long)scsi_get_lba(cmnd),
4625 blk_rq_sectors(cmnd->request),
4626 (cmnd->cmnd[1]>>5));
4628 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
4630 if (vport->phba->cfg_enable_bg) {
4631 lpfc_printf_vlog(vport,
4632 KERN_INFO, LOG_SCSI_CMD,
4633 "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
4634 "x%x sector x%llx cnt %u pt %x\n",
4636 (unsigned long long)scsi_get_lba(cmnd),
4637 blk_rq_sectors(cmnd->request),
4638 (cmnd->cmnd[1]>>5));
4640 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
4644 goto out_host_busy_free_buf;
4646 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
4648 atomic_inc(&ndlp->cmd_pending);
4649 err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4650 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
4652 atomic_dec(&ndlp->cmd_pending);
4653 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4654 "3376 FCP could not issue IOCB err %x"
4655 "FCP cmd x%x <%d/%llu> "
4656 "sid: x%x did: x%x oxid: x%x "
4657 "Data: x%x x%x x%x x%x\n",
4659 cmnd->device ? cmnd->device->id : 0xffff,
4660 cmnd->device ? cmnd->device->lun : (u64) -1,
4661 vport->fc_myDID, ndlp->nlp_DID,
4662 phba->sli_rev == LPFC_SLI_REV4 ?
4663 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
4664 lpfc_cmd->cur_iocbq.iocb.ulpContext,
4665 lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
4666 lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
4668 (cmnd->request->timeout / 1000));
4670 switch (lpfc_cmd->fcp_cmnd->fcpCntl3) {
4672 atomic_dec(&phba->fc4ScsiOutputRequests);
4675 atomic_dec(&phba->fc4ScsiInputRequests);
4678 atomic_dec(&phba->fc4ScsiControlRequests);
4680 goto out_host_busy_free_buf;
4682 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4683 lpfc_sli_handle_fast_ring_event(phba,
4684 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
4686 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4687 lpfc_poll_rearm_timer(phba);
4692 out_host_busy_free_buf:
4693 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
4694 lpfc_release_scsi_buf(phba, lpfc_cmd);
4696 return SCSI_MLQUEUE_HOST_BUSY;
4699 return SCSI_MLQUEUE_TARGET_BUSY;
4702 cmnd->scsi_done(cmnd);
4708 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
4709 * @cmnd: Pointer to scsi_cmnd data structure.
4711 * This routine aborts @cmnd pending in base driver.
4718 lpfc_abort_handler(struct scsi_cmnd *cmnd)
4720 struct Scsi_Host *shost = cmnd->device->host;
4721 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4722 struct lpfc_hba *phba = vport->phba;
4723 struct lpfc_iocbq *iocb;
4724 struct lpfc_iocbq *abtsiocb;
4725 struct lpfc_scsi_buf *lpfc_cmd;
4727 int ret = SUCCESS, status = 0;
4728 struct lpfc_sli_ring *pring_s4;
4730 unsigned long flags, iflags;
4731 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
4733 status = fc_block_scsi_eh(cmnd);
4734 if (status != 0 && status != SUCCESS)
4737 spin_lock_irqsave(&phba->hbalock, flags);
4738 /* driver queued commands are in process of being flushed */
4739 if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) {
4740 spin_unlock_irqrestore(&phba->hbalock, flags);
4741 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4742 "3168 SCSI Layer abort requested I/O has been "
4743 "flushed by LLD.\n");
4747 lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
4748 if (!lpfc_cmd || !lpfc_cmd->pCmd) {
4749 spin_unlock_irqrestore(&phba->hbalock, flags);
4750 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4751 "2873 SCSI Layer I/O Abort Request IO CMPL Status "
4752 "x%x ID %d LUN %llu\n",
4753 SUCCESS, cmnd->device->id, cmnd->device->lun);
4757 iocb = &lpfc_cmd->cur_iocbq;
4758 /* the command is in process of being cancelled */
4759 if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
4760 spin_unlock_irqrestore(&phba->hbalock, flags);
4761 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4762 "3169 SCSI Layer abort requested I/O has been "
4763 "cancelled by LLD.\n");
4767 * If pCmd field of the corresponding lpfc_scsi_buf structure
4768 * points to a different SCSI command, then the driver has
4769 * already completed this command, but the midlayer did not
4770 * see the completion before the eh fired. Just return SUCCESS.
4772 if (lpfc_cmd->pCmd != cmnd) {
4773 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4774 "3170 SCSI Layer abort requested I/O has been "
4775 "completed by LLD.\n");
4779 BUG_ON(iocb->context1 != lpfc_cmd);
4781 /* abort issued in recovery is still in progress */
4782 if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) {
4783 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4784 "3389 SCSI Layer I/O Abort Request is pending\n");
4785 spin_unlock_irqrestore(&phba->hbalock, flags);
4789 abtsiocb = __lpfc_sli_get_iocbq(phba);
4790 if (abtsiocb == NULL) {
4795 /* Indicate the IO is being aborted by the driver. */
4796 iocb->iocb_flag |= LPFC_DRIVER_ABORTED;
4799 * The scsi command can not be in txq and it is in flight because the
4800 * pCmd is still pointig at the SCSI command we have to abort. There
4801 * is no need to search the txcmplq. Just send an abort to the FW.
4805 icmd = &abtsiocb->iocb;
4806 icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
4807 icmd->un.acxri.abortContextTag = cmd->ulpContext;
4808 if (phba->sli_rev == LPFC_SLI_REV4)
4809 icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
4811 icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
4814 icmd->ulpClass = cmd->ulpClass;
4816 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
4817 abtsiocb->hba_wqidx = iocb->hba_wqidx;
4818 abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
4819 if (iocb->iocb_flag & LPFC_IO_FOF)
4820 abtsiocb->iocb_flag |= LPFC_IO_FOF;
4822 if (lpfc_is_link_up(phba))
4823 icmd->ulpCommand = CMD_ABORT_XRI_CN;
4825 icmd->ulpCommand = CMD_CLOSE_XRI_CN;
4827 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
4828 abtsiocb->vport = vport;
4829 if (phba->sli_rev == LPFC_SLI_REV4) {
4830 pring_s4 = lpfc_sli4_calc_ring(phba, iocb);
4831 if (pring_s4 == NULL) {
4835 /* Note: both hbalock and ring_lock must be set here */
4836 spin_lock_irqsave(&pring_s4->ring_lock, iflags);
4837 ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
4839 spin_unlock_irqrestore(&pring_s4->ring_lock, iflags);
4841 ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4844 /* no longer need the lock after this point */
4845 spin_unlock_irqrestore(&phba->hbalock, flags);
4848 if (ret_val == IOCB_ERROR) {
4849 lpfc_sli_release_iocbq(phba, abtsiocb);
4854 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4855 lpfc_sli_handle_fast_ring_event(phba,
4856 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
4859 lpfc_cmd->waitq = &waitq;
4860 /* Wait for abort to complete */
4861 wait_event_timeout(waitq,
4862 (lpfc_cmd->pCmd != cmnd),
4863 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
4865 spin_lock_irqsave(shost->host_lock, flags);
4866 lpfc_cmd->waitq = NULL;
4867 spin_unlock_irqrestore(shost->host_lock, flags);
4869 if (lpfc_cmd->pCmd == cmnd) {
4871 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
4872 "0748 abort handler timed out waiting "
4873 "for aborting I/O (xri:x%x) to complete: "
4874 "ret %#x, ID %d, LUN %llu\n",
4875 iocb->sli4_xritag, ret,
4876 cmnd->device->id, cmnd->device->lun);
4881 spin_unlock_irqrestore(&phba->hbalock, flags);
4883 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4884 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
4885 "LUN %llu\n", ret, cmnd->device->id,
4891 lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
4893 switch (task_mgmt_cmd) {
4894 case FCP_ABORT_TASK_SET:
4895 return "ABORT_TASK_SET";
4896 case FCP_CLEAR_TASK_SET:
4897 return "FCP_CLEAR_TASK_SET";
4899 return "FCP_BUS_RESET";
4901 return "FCP_LUN_RESET";
4902 case FCP_TARGET_RESET:
4903 return "FCP_TARGET_RESET";
4905 return "FCP_CLEAR_ACA";
4906 case FCP_TERMINATE_TASK:
4907 return "FCP_TERMINATE_TASK";
4915 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed
4916 * @vport: The virtual port for which this call is being executed.
4917 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4919 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded
4926 lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd)
4928 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
4931 uint8_t rsp_info_code;
4936 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4937 "0703 fcp_rsp is missing\n");
4939 rsp_info = fcprsp->rspStatus2;
4940 rsp_len = be32_to_cpu(fcprsp->rspRspLen);
4941 rsp_info_code = fcprsp->rspInfo3;
4944 lpfc_printf_vlog(vport, KERN_INFO,
4946 "0706 fcp_rsp valid 0x%x,"
4947 " rsp len=%d code 0x%x\n",
4949 rsp_len, rsp_info_code);
4951 if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) {
4952 switch (rsp_info_code) {
4953 case RSP_NO_FAILURE:
4954 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4955 "0715 Task Mgmt No Failure\n");
4958 case RSP_TM_NOT_SUPPORTED: /* TM rejected */
4959 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4960 "0716 Task Mgmt Target "
4963 case RSP_TM_NOT_COMPLETED: /* TM failed */
4964 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4965 "0717 Task Mgmt Target "
4968 case RSP_TM_INVALID_LU: /* TM to invalid LU! */
4969 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4970 "0718 Task Mgmt to invalid "
4981 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
4982 * @vport: The virtual port for which this call is being executed.
4983 * @rdata: Pointer to remote port local data
4984 * @tgt_id: Target ID of remote device.
4985 * @lun_id: Lun number for the TMF
4986 * @task_mgmt_cmd: type of TMF to send
4988 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
4996 lpfc_send_taskmgmt(struct lpfc_vport *vport, struct scsi_cmnd *cmnd,
4997 unsigned int tgt_id, uint64_t lun_id,
4998 uint8_t task_mgmt_cmd)
5000 struct lpfc_hba *phba = vport->phba;
5001 struct lpfc_scsi_buf *lpfc_cmd;
5002 struct lpfc_iocbq *iocbq;
5003 struct lpfc_iocbq *iocbqrsp;
5004 struct lpfc_rport_data *rdata;
5005 struct lpfc_nodelist *pnode;
5009 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5010 if (!rdata || !rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
5012 pnode = rdata->pnode;
5014 lpfc_cmd = lpfc_get_scsi_buf(phba, pnode);
5015 if (lpfc_cmd == NULL)
5017 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo;
5018 lpfc_cmd->rdata = rdata;
5019 lpfc_cmd->pCmd = cmnd;
5021 status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
5024 lpfc_release_scsi_buf(phba, lpfc_cmd);
5028 iocbq = &lpfc_cmd->cur_iocbq;
5029 iocbqrsp = lpfc_sli_get_iocbq(phba);
5030 if (iocbqrsp == NULL) {
5031 lpfc_release_scsi_buf(phba, lpfc_cmd);
5034 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
5036 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5037 "0702 Issue %s to TGT %d LUN %llu "
5038 "rpi x%x nlp_flag x%x Data: x%x x%x\n",
5039 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
5040 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
5043 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
5044 iocbq, iocbqrsp, lpfc_cmd->timeout);
5045 if ((status != IOCB_SUCCESS) ||
5046 (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) {
5047 if (status != IOCB_SUCCESS ||
5048 iocbqrsp->iocb.ulpStatus != IOSTAT_FCP_RSP_ERROR)
5049 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5050 "0727 TMF %s to TGT %d LUN %llu "
5051 "failed (%d, %d) iocb_flag x%x\n",
5052 lpfc_taskmgmt_name(task_mgmt_cmd),
5054 iocbqrsp->iocb.ulpStatus,
5055 iocbqrsp->iocb.un.ulpWord[4],
5057 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */
5058 if (status == IOCB_SUCCESS) {
5059 if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
5060 /* Something in the FCP_RSP was invalid.
5061 * Check conditions */
5062 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd);
5065 } else if (status == IOCB_TIMEDOUT) {
5066 ret = TIMEOUT_ERROR;
5073 lpfc_sli_release_iocbq(phba, iocbqrsp);
5075 if (ret != TIMEOUT_ERROR)
5076 lpfc_release_scsi_buf(phba, lpfc_cmd);
5082 * lpfc_chk_tgt_mapped -
5083 * @vport: The virtual port to check on
5084 * @cmnd: Pointer to scsi_cmnd data structure.
5086 * This routine delays until the scsi target (aka rport) for the
5087 * command exists (is present and logged in) or we declare it non-existent.
5094 lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
5096 struct lpfc_rport_data *rdata;
5097 struct lpfc_nodelist *pnode;
5098 unsigned long later;
5100 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5102 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5103 "0797 Tgt Map rport failure: rdata x%p\n", rdata);
5106 pnode = rdata->pnode;
5108 * If target is not in a MAPPED state, delay until
5109 * target is rediscovered or devloss timeout expires.
5111 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5112 while (time_after(later, jiffies)) {
5113 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
5115 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
5117 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
5118 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5121 pnode = rdata->pnode;
5123 if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
5124 (pnode->nlp_state != NLP_STE_MAPPED_NODE))
5130 * lpfc_reset_flush_io_context -
5131 * @vport: The virtual port (scsi_host) for the flush context
5132 * @tgt_id: If aborting by Target contect - specifies the target id
5133 * @lun_id: If aborting by Lun context - specifies the lun id
5134 * @context: specifies the context level to flush at.
5136 * After a reset condition via TMF, we need to flush orphaned i/o
5137 * contexts from the adapter. This routine aborts any contexts
5138 * outstanding, then waits for their completions. The wait is
5139 * bounded by devloss_tmo though.
5146 lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
5147 uint64_t lun_id, lpfc_ctx_cmd context)
5149 struct lpfc_hba *phba = vport->phba;
5150 unsigned long later;
5153 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
5155 lpfc_sli_abort_taskmgmt(vport,
5156 &phba->sli.sli3_ring[LPFC_FCP_RING],
5157 tgt_id, lun_id, context);
5158 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5159 while (time_after(later, jiffies) && cnt) {
5160 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
5161 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
5164 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5165 "0724 I/O flush failure for context %s : cnt x%x\n",
5166 ((context == LPFC_CTX_LUN) ? "LUN" :
5167 ((context == LPFC_CTX_TGT) ? "TGT" :
5168 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
5176 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
5177 * @cmnd: Pointer to scsi_cmnd data structure.
5179 * This routine does a device reset by sending a LUN_RESET task management
5187 lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
5189 struct Scsi_Host *shost = cmnd->device->host;
5190 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5191 struct lpfc_rport_data *rdata;
5192 struct lpfc_nodelist *pnode;
5193 unsigned tgt_id = cmnd->device->id;
5194 uint64_t lun_id = cmnd->device->lun;
5195 struct lpfc_scsi_event_header scsi_event;
5198 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5199 if (!rdata || !rdata->pnode) {
5200 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5201 "0798 Device Reset rport failure: rdata x%p\n",
5205 pnode = rdata->pnode;
5206 status = fc_block_scsi_eh(cmnd);
5207 if (status != 0 && status != SUCCESS)
5210 status = lpfc_chk_tgt_mapped(vport, cmnd);
5211 if (status == FAILED) {
5212 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5213 "0721 Device Reset rport failure: rdata x%p\n", rdata);
5217 scsi_event.event_type = FC_REG_SCSI_EVENT;
5218 scsi_event.subcategory = LPFC_EVENT_LUNRESET;
5219 scsi_event.lun = lun_id;
5220 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5221 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5223 fc_host_post_vendor_event(shost, fc_get_event_number(),
5224 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5226 status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id,
5229 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5230 "0713 SCSI layer issued Device Reset (%d, %llu) "
5231 "return x%x\n", tgt_id, lun_id, status);
5234 * We have to clean up i/o as : they may be orphaned by the TMF;
5235 * or if the TMF failed, they may be in an indeterminate state.
5237 * We will report success if all the i/o aborts successfully.
5239 if (status == SUCCESS)
5240 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5247 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
5248 * @cmnd: Pointer to scsi_cmnd data structure.
5250 * This routine does a target reset by sending a TARGET_RESET task management
5258 lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
5260 struct Scsi_Host *shost = cmnd->device->host;
5261 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5262 struct lpfc_rport_data *rdata;
5263 struct lpfc_nodelist *pnode;
5264 unsigned tgt_id = cmnd->device->id;
5265 uint64_t lun_id = cmnd->device->lun;
5266 struct lpfc_scsi_event_header scsi_event;
5269 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5271 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5272 "0799 Target Reset rport failure: rdata x%p\n", rdata);
5275 pnode = rdata->pnode;
5276 status = fc_block_scsi_eh(cmnd);
5277 if (status != 0 && status != SUCCESS)
5280 status = lpfc_chk_tgt_mapped(vport, cmnd);
5281 if (status == FAILED) {
5282 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5283 "0722 Target Reset rport failure: rdata x%p\n", rdata);
5285 spin_lock_irq(shost->host_lock);
5286 pnode->nlp_flag &= ~NLP_NPR_ADISC;
5287 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
5288 spin_unlock_irq(shost->host_lock);
5290 lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5292 return FAST_IO_FAIL;
5295 scsi_event.event_type = FC_REG_SCSI_EVENT;
5296 scsi_event.subcategory = LPFC_EVENT_TGTRESET;
5298 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5299 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5301 fc_host_post_vendor_event(shost, fc_get_event_number(),
5302 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5304 status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id,
5307 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5308 "0723 SCSI layer issued Target Reset (%d, %llu) "
5309 "return x%x\n", tgt_id, lun_id, status);
5312 * We have to clean up i/o as : they may be orphaned by the TMF;
5313 * or if the TMF failed, they may be in an indeterminate state.
5315 * We will report success if all the i/o aborts successfully.
5317 if (status == SUCCESS)
5318 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5324 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
5325 * @cmnd: Pointer to scsi_cmnd data structure.
5327 * This routine does target reset to all targets on @cmnd->device->host.
5328 * This emulates Parallel SCSI Bus Reset Semantics.
5335 lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
5337 struct Scsi_Host *shost = cmnd->device->host;
5338 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5339 struct lpfc_nodelist *ndlp = NULL;
5340 struct lpfc_scsi_event_header scsi_event;
5342 int ret = SUCCESS, status, i;
5344 scsi_event.event_type = FC_REG_SCSI_EVENT;
5345 scsi_event.subcategory = LPFC_EVENT_BUSRESET;
5347 memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
5348 memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
5350 fc_host_post_vendor_event(shost, fc_get_event_number(),
5351 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5353 status = fc_block_scsi_eh(cmnd);
5354 if (status != 0 && status != SUCCESS)
5358 * Since the driver manages a single bus device, reset all
5359 * targets known to the driver. Should any target reset
5360 * fail, this routine returns failure to the midlayer.
5362 for (i = 0; i < LPFC_MAX_TARGET; i++) {
5363 /* Search for mapped node by target ID */
5365 spin_lock_irq(shost->host_lock);
5366 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5367 if (!NLP_CHK_NODE_ACT(ndlp))
5369 if (vport->phba->cfg_fcp2_no_tgt_reset &&
5370 (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
5372 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5373 ndlp->nlp_sid == i &&
5375 ndlp->nlp_type & NLP_FCP_TARGET) {
5380 spin_unlock_irq(shost->host_lock);
5384 status = lpfc_send_taskmgmt(vport, cmnd,
5385 i, 0, FCP_TARGET_RESET);
5387 if (status != SUCCESS) {
5388 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5389 "0700 Bus Reset on target %d failed\n",
5395 * We have to clean up i/o as : they may be orphaned by the TMFs
5396 * above; or if any of the TMFs failed, they may be in an
5397 * indeterminate state.
5398 * We will report success if all the i/o aborts successfully.
5401 status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
5402 if (status != SUCCESS)
5405 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5406 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
5411 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
5412 * @cmnd: Pointer to scsi_cmnd data structure.
5414 * This routine does host reset to the adaptor port. It brings the HBA
5415 * offline, performs a board restart, and then brings the board back online.
5416 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local
5417 * reject all outstanding SCSI commands to the host and error returned
5418 * back to SCSI mid-level. As this will be SCSI mid-level's last resort
5419 * of error handling, it will only return error if resetting of the adapter
5420 * is not successful; in all other cases, will return success.
5427 lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
5429 struct Scsi_Host *shost = cmnd->device->host;
5430 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5431 struct lpfc_hba *phba = vport->phba;
5432 int rc, ret = SUCCESS;
5434 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5435 "3172 SCSI layer issued Host Reset Data:\n");
5437 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
5439 rc = lpfc_sli_brdrestart(phba);
5442 rc = lpfc_online(phba);
5445 lpfc_unblock_mgmt_io(phba);
5447 if (ret == FAILED) {
5448 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5449 "3323 Failed host reset, bring it offline\n");
5450 lpfc_sli4_offline_eratt(phba);
5456 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
5457 * @sdev: Pointer to scsi_device.
5459 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
5460 * globally available list of scsi buffers. This routine also makes sure scsi
5461 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
5462 * of scsi buffer exists for the lifetime of the driver.
5469 lpfc_slave_alloc(struct scsi_device *sdev)
5471 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5472 struct lpfc_hba *phba = vport->phba;
5473 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
5475 uint32_t num_to_alloc = 0;
5476 int num_allocated = 0;
5478 struct lpfc_device_data *device_data;
5479 unsigned long flags;
5480 struct lpfc_name target_wwpn;
5482 if (!rport || fc_remote_port_chkready(rport))
5485 if (phba->cfg_fof) {
5488 * Check to see if the device data structure for the lun
5489 * exists. If not, create one.
5492 u64_to_wwn(rport->port_name, target_wwpn.u.wwn);
5493 spin_lock_irqsave(&phba->devicelock, flags);
5494 device_data = __lpfc_get_device_data(phba,
5496 &vport->fc_portname,
5500 spin_unlock_irqrestore(&phba->devicelock, flags);
5501 device_data = lpfc_create_device_data(phba,
5502 &vport->fc_portname,
5505 phba->cfg_XLanePriority,
5509 spin_lock_irqsave(&phba->devicelock, flags);
5510 list_add_tail(&device_data->listentry, &phba->luns);
5512 device_data->rport_data = rport->dd_data;
5513 device_data->available = true;
5514 spin_unlock_irqrestore(&phba->devicelock, flags);
5515 sdev->hostdata = device_data;
5517 sdev->hostdata = rport->dd_data;
5519 sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
5522 * Populate the cmds_per_lun count scsi_bufs into this host's globally
5523 * available list of scsi buffers. Don't allocate more than the
5524 * HBA limit conveyed to the midlayer via the host structure. The
5525 * formula accounts for the lun_queue_depth + error handlers + 1
5526 * extra. This list of scsi bufs exists for the lifetime of the driver.
5528 total = phba->total_scsi_bufs;
5529 num_to_alloc = vport->cfg_lun_queue_depth + 2;
5531 /* If allocated buffers are enough do nothing */
5532 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
5535 /* Allow some exchanges to be available always to complete discovery */
5536 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
5537 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5538 "0704 At limitation of %d preallocated "
5539 "command buffers\n", total);
5541 /* Allow some exchanges to be available always to complete discovery */
5542 } else if (total + num_to_alloc >
5543 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
5544 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5545 "0705 Allocation request of %d "
5546 "command buffers will exceed max of %d. "
5547 "Reducing allocation request to %d.\n",
5548 num_to_alloc, phba->cfg_hba_queue_depth,
5549 (phba->cfg_hba_queue_depth - total));
5550 num_to_alloc = phba->cfg_hba_queue_depth - total;
5552 num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc);
5553 if (num_to_alloc != num_allocated) {
5554 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5555 "0708 Allocation request of %d "
5556 "command buffers did not succeed. "
5557 "Allocated %d buffers.\n",
5558 num_to_alloc, num_allocated);
5560 if (num_allocated > 0)
5561 phba->total_scsi_bufs += num_allocated;
5566 * lpfc_slave_configure - scsi_host_template slave_configure entry point
5567 * @sdev: Pointer to scsi_device.
5569 * This routine configures following items
5570 * - Tag command queuing support for @sdev if supported.
5571 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
5577 lpfc_slave_configure(struct scsi_device *sdev)
5579 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5580 struct lpfc_hba *phba = vport->phba;
5582 scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth);
5584 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
5585 lpfc_sli_handle_fast_ring_event(phba,
5586 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
5587 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
5588 lpfc_poll_rearm_timer(phba);
5595 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
5596 * @sdev: Pointer to scsi_device.
5598 * This routine sets @sdev hostatdata filed to null.
5601 lpfc_slave_destroy(struct scsi_device *sdev)
5603 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5604 struct lpfc_hba *phba = vport->phba;
5605 unsigned long flags;
5606 struct lpfc_device_data *device_data = sdev->hostdata;
5608 atomic_dec(&phba->sdev_cnt);
5609 if ((phba->cfg_fof) && (device_data)) {
5610 spin_lock_irqsave(&phba->devicelock, flags);
5611 device_data->available = false;
5612 if (!device_data->oas_enabled)
5613 lpfc_delete_device_data(phba, device_data);
5614 spin_unlock_irqrestore(&phba->devicelock, flags);
5616 sdev->hostdata = NULL;
5621 * lpfc_create_device_data - creates and initializes device data structure for OAS
5622 * @pha: Pointer to host bus adapter structure.
5623 * @vport_wwpn: Pointer to vport's wwpn information
5624 * @target_wwpn: Pointer to target's wwpn information
5625 * @lun: Lun on target
5626 * @atomic_create: Flag to indicate if memory should be allocated using the
5627 * GFP_ATOMIC flag or not.
5629 * This routine creates a device data structure which will contain identifying
5630 * information for the device (host wwpn, target wwpn, lun), state of OAS,
5631 * whether or not the corresponding lun is available by the system,
5632 * and pointer to the rport data.
5636 * Pointer to lpfc_device_data - Success
5638 struct lpfc_device_data*
5639 lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5640 struct lpfc_name *target_wwpn, uint64_t lun,
5641 uint32_t pri, bool atomic_create)
5644 struct lpfc_device_data *lun_info;
5647 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5651 /* Attempt to create the device data to contain lun info */
5654 memory_flags = GFP_ATOMIC;
5656 memory_flags = GFP_KERNEL;
5657 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags);
5660 INIT_LIST_HEAD(&lun_info->listentry);
5661 lun_info->rport_data = NULL;
5662 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn,
5663 sizeof(struct lpfc_name));
5664 memcpy(&lun_info->device_id.target_wwpn, target_wwpn,
5665 sizeof(struct lpfc_name));
5666 lun_info->device_id.lun = lun;
5667 lun_info->oas_enabled = false;
5668 lun_info->priority = pri;
5669 lun_info->available = false;
5674 * lpfc_delete_device_data - frees a device data structure for OAS
5675 * @pha: Pointer to host bus adapter structure.
5676 * @lun_info: Pointer to device data structure to free.
5678 * This routine frees the previously allocated device data structure passed.
5682 lpfc_delete_device_data(struct lpfc_hba *phba,
5683 struct lpfc_device_data *lun_info)
5686 if (unlikely(!phba) || !lun_info ||
5690 if (!list_empty(&lun_info->listentry))
5691 list_del(&lun_info->listentry);
5692 mempool_free(lun_info, phba->device_data_mem_pool);
5697 * __lpfc_get_device_data - returns the device data for the specified lun
5698 * @pha: Pointer to host bus adapter structure.
5699 * @list: Point to list to search.
5700 * @vport_wwpn: Pointer to vport's wwpn information
5701 * @target_wwpn: Pointer to target's wwpn information
5702 * @lun: Lun on target
5704 * This routine searches the list passed for the specified lun's device data.
5705 * This function does not hold locks, it is the responsibility of the caller
5706 * to ensure the proper lock is held before calling the function.
5710 * Pointer to lpfc_device_data - Success
5712 struct lpfc_device_data*
5713 __lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list,
5714 struct lpfc_name *vport_wwpn,
5715 struct lpfc_name *target_wwpn, uint64_t lun)
5718 struct lpfc_device_data *lun_info;
5720 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn ||
5724 /* Check to see if the lun is already enabled for OAS. */
5726 list_for_each_entry(lun_info, list, listentry) {
5727 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5728 sizeof(struct lpfc_name)) == 0) &&
5729 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5730 sizeof(struct lpfc_name)) == 0) &&
5731 (lun_info->device_id.lun == lun))
5739 * lpfc_find_next_oas_lun - searches for the next oas lun
5740 * @pha: Pointer to host bus adapter structure.
5741 * @vport_wwpn: Pointer to vport's wwpn information
5742 * @target_wwpn: Pointer to target's wwpn information
5743 * @starting_lun: Pointer to the lun to start searching for
5744 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information
5745 * @found_target_wwpn: Pointer to the found lun's target wwpn information
5746 * @found_lun: Pointer to the found lun.
5747 * @found_lun_status: Pointer to status of the found lun.
5749 * This routine searches the luns list for the specified lun
5750 * or the first lun for the vport/target. If the vport wwpn contains
5751 * a zero value then a specific vport is not specified. In this case
5752 * any vport which contains the lun will be considered a match. If the
5753 * target wwpn contains a zero value then a specific target is not specified.
5754 * In this case any target which contains the lun will be considered a
5755 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status
5756 * are returned. The function will also return the next lun if available.
5757 * If the next lun is not found, starting_lun parameter will be set to
5765 lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5766 struct lpfc_name *target_wwpn, uint64_t *starting_lun,
5767 struct lpfc_name *found_vport_wwpn,
5768 struct lpfc_name *found_target_wwpn,
5769 uint64_t *found_lun,
5770 uint32_t *found_lun_status,
5771 uint32_t *found_lun_pri)
5774 unsigned long flags;
5775 struct lpfc_device_data *lun_info;
5776 struct lpfc_device_id *device_id;
5780 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5781 !starting_lun || !found_vport_wwpn ||
5782 !found_target_wwpn || !found_lun || !found_lun_status ||
5783 (*starting_lun == NO_MORE_OAS_LUN) ||
5787 lun = *starting_lun;
5788 *found_lun = NO_MORE_OAS_LUN;
5789 *starting_lun = NO_MORE_OAS_LUN;
5791 /* Search for lun or the lun closet in value */
5793 spin_lock_irqsave(&phba->devicelock, flags);
5794 list_for_each_entry(lun_info, &phba->luns, listentry) {
5795 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) ||
5796 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5797 sizeof(struct lpfc_name)) == 0)) &&
5798 ((wwn_to_u64(target_wwpn->u.wwn) == 0) ||
5799 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5800 sizeof(struct lpfc_name)) == 0)) &&
5801 (lun_info->oas_enabled)) {
5802 device_id = &lun_info->device_id;
5804 ((lun == FIND_FIRST_OAS_LUN) ||
5805 (device_id->lun == lun))) {
5806 *found_lun = device_id->lun;
5807 memcpy(found_vport_wwpn,
5808 &device_id->vport_wwpn,
5809 sizeof(struct lpfc_name));
5810 memcpy(found_target_wwpn,
5811 &device_id->target_wwpn,
5812 sizeof(struct lpfc_name));
5813 if (lun_info->available)
5815 OAS_LUN_STATUS_EXISTS;
5817 *found_lun_status = 0;
5818 *found_lun_pri = lun_info->priority;
5819 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)
5820 memset(vport_wwpn, 0x0,
5821 sizeof(struct lpfc_name));
5822 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)
5823 memset(target_wwpn, 0x0,
5824 sizeof(struct lpfc_name));
5827 *starting_lun = device_id->lun;
5828 memcpy(vport_wwpn, &device_id->vport_wwpn,
5829 sizeof(struct lpfc_name));
5830 memcpy(target_wwpn, &device_id->target_wwpn,
5831 sizeof(struct lpfc_name));
5836 spin_unlock_irqrestore(&phba->devicelock, flags);
5841 * lpfc_enable_oas_lun - enables a lun for OAS operations
5842 * @pha: Pointer to host bus adapter structure.
5843 * @vport_wwpn: Pointer to vport's wwpn information
5844 * @target_wwpn: Pointer to target's wwpn information
5847 * This routine enables a lun for oas operations. The routines does so by
5848 * doing the following :
5850 * 1) Checks to see if the device data for the lun has been created.
5851 * 2) If found, sets the OAS enabled flag if not set and returns.
5852 * 3) Otherwise, creates a device data structure.
5853 * 4) If successfully created, indicates the device data is for an OAS lun,
5854 * indicates the lun is not available and add to the list of luns.
5861 lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5862 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
5865 struct lpfc_device_data *lun_info;
5866 unsigned long flags;
5868 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5872 spin_lock_irqsave(&phba->devicelock, flags);
5874 /* Check to see if the device data for the lun has been created */
5875 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn,
5878 if (!lun_info->oas_enabled)
5879 lun_info->oas_enabled = true;
5880 lun_info->priority = pri;
5881 spin_unlock_irqrestore(&phba->devicelock, flags);
5885 /* Create an lun info structure and add to list of luns */
5886 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun,
5889 lun_info->oas_enabled = true;
5890 lun_info->priority = pri;
5891 lun_info->available = false;
5892 list_add_tail(&lun_info->listentry, &phba->luns);
5893 spin_unlock_irqrestore(&phba->devicelock, flags);
5896 spin_unlock_irqrestore(&phba->devicelock, flags);
5901 * lpfc_disable_oas_lun - disables a lun for OAS operations
5902 * @pha: Pointer to host bus adapter structure.
5903 * @vport_wwpn: Pointer to vport's wwpn information
5904 * @target_wwpn: Pointer to target's wwpn information
5907 * This routine disables a lun for oas operations. The routines does so by
5908 * doing the following :
5910 * 1) Checks to see if the device data for the lun is created.
5911 * 2) If present, clears the flag indicating this lun is for OAS.
5912 * 3) If the lun is not available by the system, the device data is
5920 lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5921 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
5924 struct lpfc_device_data *lun_info;
5925 unsigned long flags;
5927 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5931 spin_lock_irqsave(&phba->devicelock, flags);
5933 /* Check to see if the lun is available. */
5934 lun_info = __lpfc_get_device_data(phba,
5935 &phba->luns, vport_wwpn,
5938 lun_info->oas_enabled = false;
5939 lun_info->priority = pri;
5940 if (!lun_info->available)
5941 lpfc_delete_device_data(phba, lun_info);
5942 spin_unlock_irqrestore(&phba->devicelock, flags);
5946 spin_unlock_irqrestore(&phba->devicelock, flags);
5951 lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
5953 return SCSI_MLQUEUE_HOST_BUSY;
5957 lpfc_no_handler(struct scsi_cmnd *cmnd)
5963 lpfc_no_slave(struct scsi_device *sdev)
5968 struct scsi_host_template lpfc_template_nvme = {
5969 .module = THIS_MODULE,
5970 .name = LPFC_DRIVER_NAME,
5971 .proc_name = LPFC_DRIVER_NAME,
5973 .queuecommand = lpfc_no_command,
5974 .eh_abort_handler = lpfc_no_handler,
5975 .eh_device_reset_handler = lpfc_no_handler,
5976 .eh_target_reset_handler = lpfc_no_handler,
5977 .eh_bus_reset_handler = lpfc_no_handler,
5978 .eh_host_reset_handler = lpfc_no_handler,
5979 .slave_alloc = lpfc_no_slave,
5980 .slave_configure = lpfc_no_slave,
5981 .scan_finished = lpfc_scan_finished,
5985 .use_clustering = ENABLE_CLUSTERING,
5986 .shost_attrs = lpfc_hba_attrs,
5987 .max_sectors = 0xFFFF,
5988 .vendor_id = LPFC_NL_VENDOR_ID,
5989 .track_queue_depth = 0,
5992 struct scsi_host_template lpfc_template_no_hr = {
5993 .module = THIS_MODULE,
5994 .name = LPFC_DRIVER_NAME,
5995 .proc_name = LPFC_DRIVER_NAME,
5997 .queuecommand = lpfc_queuecommand,
5998 .eh_timed_out = fc_eh_timed_out,
5999 .eh_abort_handler = lpfc_abort_handler,
6000 .eh_device_reset_handler = lpfc_device_reset_handler,
6001 .eh_target_reset_handler = lpfc_target_reset_handler,
6002 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6003 .slave_alloc = lpfc_slave_alloc,
6004 .slave_configure = lpfc_slave_configure,
6005 .slave_destroy = lpfc_slave_destroy,
6006 .scan_finished = lpfc_scan_finished,
6008 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6009 .cmd_per_lun = LPFC_CMD_PER_LUN,
6010 .use_clustering = ENABLE_CLUSTERING,
6011 .shost_attrs = lpfc_hba_attrs,
6012 .max_sectors = 0xFFFF,
6013 .vendor_id = LPFC_NL_VENDOR_ID,
6014 .change_queue_depth = scsi_change_queue_depth,
6015 .track_queue_depth = 1,
6018 struct scsi_host_template lpfc_template = {
6019 .module = THIS_MODULE,
6020 .name = LPFC_DRIVER_NAME,
6021 .proc_name = LPFC_DRIVER_NAME,
6023 .queuecommand = lpfc_queuecommand,
6024 .eh_timed_out = fc_eh_timed_out,
6025 .eh_abort_handler = lpfc_abort_handler,
6026 .eh_device_reset_handler = lpfc_device_reset_handler,
6027 .eh_target_reset_handler = lpfc_target_reset_handler,
6028 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6029 .eh_host_reset_handler = lpfc_host_reset_handler,
6030 .slave_alloc = lpfc_slave_alloc,
6031 .slave_configure = lpfc_slave_configure,
6032 .slave_destroy = lpfc_slave_destroy,
6033 .scan_finished = lpfc_scan_finished,
6035 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6036 .cmd_per_lun = LPFC_CMD_PER_LUN,
6037 .use_clustering = ENABLE_CLUSTERING,
6038 .shost_attrs = lpfc_hba_attrs,
6039 .max_sectors = 0xFFFF,
6040 .vendor_id = LPFC_NL_VENDOR_ID,
6041 .change_queue_depth = scsi_change_queue_depth,
6042 .track_queue_depth = 1,
6045 struct scsi_host_template lpfc_vport_template = {
6046 .module = THIS_MODULE,
6047 .name = LPFC_DRIVER_NAME,
6048 .proc_name = LPFC_DRIVER_NAME,
6050 .queuecommand = lpfc_queuecommand,
6051 .eh_timed_out = fc_eh_timed_out,
6052 .eh_abort_handler = lpfc_abort_handler,
6053 .eh_device_reset_handler = lpfc_device_reset_handler,
6054 .eh_target_reset_handler = lpfc_target_reset_handler,
6055 .slave_alloc = lpfc_slave_alloc,
6056 .slave_configure = lpfc_slave_configure,
6057 .slave_destroy = lpfc_slave_destroy,
6058 .scan_finished = lpfc_scan_finished,
6060 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6061 .cmd_per_lun = LPFC_CMD_PER_LUN,
6062 .use_clustering = ENABLE_CLUSTERING,
6063 .shost_attrs = lpfc_vport_attrs,
6064 .max_sectors = 0xFFFF,
6065 .change_queue_depth = scsi_change_queue_depth,
6066 .track_queue_depth = 1,