1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2020 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. 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 static char *dif_op_str[] = {
66 struct scsi_dif_tuple {
67 __be16 guard_tag; /* Checksum */
68 __be16 app_tag; /* Opaque storage */
69 __be32 ref_tag; /* Target LBA or indirect LBA */
72 static struct lpfc_rport_data *
73 lpfc_rport_data_from_scsi_device(struct scsi_device *sdev)
75 struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata;
77 if (vport->phba->cfg_fof)
78 return ((struct lpfc_device_data *)sdev->hostdata)->rport_data;
80 return (struct lpfc_rport_data *)sdev->hostdata;
84 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
86 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
88 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
90 static inline unsigned
91 lpfc_cmd_blksize(struct scsi_cmnd *sc)
93 return sc->device->sector_size;
96 #define LPFC_CHECK_PROTECT_GUARD 1
97 #define LPFC_CHECK_PROTECT_REF 2
98 static inline unsigned
99 lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
104 static inline unsigned
105 lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
107 if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
109 if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
115 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
116 * @phba: Pointer to HBA object.
117 * @lpfc_cmd: lpfc scsi command object pointer.
119 * This function is called from the lpfc_prep_task_mgmt_cmd function to
120 * set the last bit in the response sge entry.
123 lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
124 struct lpfc_io_buf *lpfc_cmd)
126 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
129 sgl->word2 = le32_to_cpu(sgl->word2);
130 bf_set(lpfc_sli4_sge_last, sgl, 1);
131 sgl->word2 = cpu_to_le32(sgl->word2);
136 * lpfc_update_stats - Update statistical data for the command completion
137 * @vport: The virtual port on which this call is executing.
138 * @lpfc_cmd: lpfc scsi command object pointer.
140 * This function is called when there is a command completion and this
141 * function updates the statistical data for the command completion.
144 lpfc_update_stats(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd)
146 struct lpfc_hba *phba = vport->phba;
147 struct lpfc_rport_data *rdata;
148 struct lpfc_nodelist *pnode;
149 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
151 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
152 unsigned long latency;
155 if (!vport->stat_data_enabled ||
156 vport->stat_data_blocked ||
160 latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
161 rdata = lpfc_cmd->rdata;
162 pnode = rdata->pnode;
164 spin_lock_irqsave(shost->host_lock, flags);
167 (phba->bucket_type == LPFC_NO_BUCKET)) {
168 spin_unlock_irqrestore(shost->host_lock, flags);
172 if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
173 i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
175 /* check array subscript bounds */
178 else if (i >= LPFC_MAX_BUCKET_COUNT)
179 i = LPFC_MAX_BUCKET_COUNT - 1;
181 for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
182 if (latency <= (phba->bucket_base +
183 ((1<<i)*phba->bucket_step)))
187 pnode->lat_data[i].cmd_count++;
188 spin_unlock_irqrestore(shost->host_lock, flags);
192 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
193 * @phba: The Hba for which this call is being executed.
195 * This routine is called when there is resource error in driver or firmware.
196 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
197 * posts at most 1 event each second. This routine wakes up worker thread of
198 * @phba to process WORKER_RAM_DOWN_EVENT event.
200 * This routine should be called with no lock held.
203 lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
207 unsigned long expires;
209 spin_lock_irqsave(&phba->hbalock, flags);
210 atomic_inc(&phba->num_rsrc_err);
211 phba->last_rsrc_error_time = jiffies;
213 expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL;
214 if (time_after(expires, jiffies)) {
215 spin_unlock_irqrestore(&phba->hbalock, flags);
219 phba->last_ramp_down_time = jiffies;
221 spin_unlock_irqrestore(&phba->hbalock, flags);
223 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
224 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
226 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
227 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
230 lpfc_worker_wake_up(phba);
235 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
236 * @phba: The Hba for which this call is being executed.
238 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
239 * thread.This routine reduces queue depth for all scsi device on each vport
240 * associated with @phba.
243 lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
245 struct lpfc_vport **vports;
246 struct Scsi_Host *shost;
247 struct scsi_device *sdev;
248 unsigned long new_queue_depth;
249 unsigned long num_rsrc_err, num_cmd_success;
252 num_rsrc_err = atomic_read(&phba->num_rsrc_err);
253 num_cmd_success = atomic_read(&phba->num_cmd_success);
256 * The error and success command counters are global per
257 * driver instance. If another handler has already
258 * operated on this error event, just exit.
260 if (num_rsrc_err == 0)
263 vports = lpfc_create_vport_work_array(phba);
265 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
266 shost = lpfc_shost_from_vport(vports[i]);
267 shost_for_each_device(sdev, shost) {
269 sdev->queue_depth * num_rsrc_err /
270 (num_rsrc_err + num_cmd_success);
271 if (!new_queue_depth)
272 new_queue_depth = sdev->queue_depth - 1;
274 new_queue_depth = sdev->queue_depth -
276 scsi_change_queue_depth(sdev, new_queue_depth);
279 lpfc_destroy_vport_work_array(phba, vports);
280 atomic_set(&phba->num_rsrc_err, 0);
281 atomic_set(&phba->num_cmd_success, 0);
285 * lpfc_scsi_dev_block - set all scsi hosts to block state
286 * @phba: Pointer to HBA context object.
288 * This function walks vport list and set each SCSI host to block state
289 * by invoking fc_remote_port_delete() routine. This function is invoked
290 * with EEH when device's PCI slot has been permanently disabled.
293 lpfc_scsi_dev_block(struct lpfc_hba *phba)
295 struct lpfc_vport **vports;
296 struct Scsi_Host *shost;
297 struct scsi_device *sdev;
298 struct fc_rport *rport;
301 vports = lpfc_create_vport_work_array(phba);
303 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
304 shost = lpfc_shost_from_vport(vports[i]);
305 shost_for_each_device(sdev, shost) {
306 rport = starget_to_rport(scsi_target(sdev));
307 fc_remote_port_delete(rport);
310 lpfc_destroy_vport_work_array(phba, vports);
314 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
315 * @vport: The virtual port for which this call being executed.
316 * @num_to_allocate: The requested number of buffers to allocate.
318 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
319 * the scsi buffer contains all the necessary information needed to initiate
320 * a SCSI I/O. The non-DMAable buffer region contains information to build
321 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
322 * and the initial BPL. In addition to allocating memory, the FCP CMND and
323 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
326 * int - number of scsi buffers that were allocated.
327 * 0 = failure, less than num_to_alloc is a partial failure.
330 lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
332 struct lpfc_hba *phba = vport->phba;
333 struct lpfc_io_buf *psb;
334 struct ulp_bde64 *bpl;
336 dma_addr_t pdma_phys_fcp_cmd;
337 dma_addr_t pdma_phys_fcp_rsp;
338 dma_addr_t pdma_phys_sgl;
342 bpl_size = phba->cfg_sg_dma_buf_size -
343 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
345 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
346 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
347 num_to_alloc, phba->cfg_sg_dma_buf_size,
348 (int)sizeof(struct fcp_cmnd),
349 (int)sizeof(struct fcp_rsp), bpl_size);
351 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
352 psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL);
357 * Get memory from the pci pool to map the virt space to pci
358 * bus space for an I/O. The DMA buffer includes space for the
359 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
360 * necessary to support the sg_tablesize.
362 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
363 GFP_KERNEL, &psb->dma_handle);
370 /* Allocate iotag for psb->cur_iocbq. */
371 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
373 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
374 psb->data, psb->dma_handle);
378 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
380 psb->fcp_cmnd = psb->data;
381 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
382 psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) +
383 sizeof(struct fcp_rsp);
385 /* Initialize local short-hand pointers. */
386 bpl = (struct ulp_bde64 *)psb->dma_sgl;
387 pdma_phys_fcp_cmd = psb->dma_handle;
388 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
389 pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) +
390 sizeof(struct fcp_rsp);
393 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
394 * are sg list bdes. Initialize the first two and leave the
395 * rest for queuecommand.
397 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
398 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
399 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
400 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
401 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
403 /* Setup the physical region for the FCP RSP */
404 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
405 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
406 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
407 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
408 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
411 * Since the IOCB for the FCP I/O is built into this
412 * lpfc_scsi_buf, initialize it with all known data now.
414 iocb = &psb->cur_iocbq.iocb;
415 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
416 if ((phba->sli_rev == 3) &&
417 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
418 /* fill in immediate fcp command BDE */
419 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
420 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
421 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
423 iocb->un.fcpi64.bdl.addrHigh = 0;
424 iocb->ulpBdeCount = 0;
426 /* fill in response BDE */
427 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
429 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
430 sizeof(struct fcp_rsp);
431 iocb->unsli3.fcp_ext.rbde.addrLow =
432 putPaddrLow(pdma_phys_fcp_rsp);
433 iocb->unsli3.fcp_ext.rbde.addrHigh =
434 putPaddrHigh(pdma_phys_fcp_rsp);
436 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
437 iocb->un.fcpi64.bdl.bdeSize =
438 (2 * sizeof(struct ulp_bde64));
439 iocb->un.fcpi64.bdl.addrLow =
440 putPaddrLow(pdma_phys_sgl);
441 iocb->un.fcpi64.bdl.addrHigh =
442 putPaddrHigh(pdma_phys_sgl);
443 iocb->ulpBdeCount = 1;
446 iocb->ulpClass = CLASS3;
447 psb->status = IOSTAT_SUCCESS;
448 /* Put it back into the SCSI buffer list */
449 psb->cur_iocbq.context1 = psb;
450 spin_lock_init(&psb->buf_lock);
451 lpfc_release_scsi_buf_s3(phba, psb);
459 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
460 * @vport: pointer to lpfc vport data structure.
462 * This routine is invoked by the vport cleanup for deletions and the cleanup
463 * for an ndlp on removal.
466 lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
468 struct lpfc_hba *phba = vport->phba;
469 struct lpfc_io_buf *psb, *next_psb;
470 struct lpfc_sli4_hdw_queue *qp;
471 unsigned long iflag = 0;
474 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
477 spin_lock_irqsave(&phba->hbalock, iflag);
478 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
479 qp = &phba->sli4_hba.hdwq[idx];
481 spin_lock(&qp->abts_io_buf_list_lock);
482 list_for_each_entry_safe(psb, next_psb,
483 &qp->lpfc_abts_io_buf_list, list) {
484 if (psb->cur_iocbq.iocb_flag & LPFC_IO_NVME)
487 if (psb->rdata && psb->rdata->pnode &&
488 psb->rdata->pnode->vport == vport)
491 spin_unlock(&qp->abts_io_buf_list_lock);
493 spin_unlock_irqrestore(&phba->hbalock, iflag);
497 * lpfc_sli4_io_xri_aborted - Fast-path process of fcp xri abort
498 * @phba: pointer to lpfc hba data structure.
499 * @axri: pointer to the fcp xri abort wcqe structure.
501 * This routine is invoked by the worker thread to process a SLI4 fast-path
502 * FCP or NVME aborted xri.
505 lpfc_sli4_io_xri_aborted(struct lpfc_hba *phba,
506 struct sli4_wcqe_xri_aborted *axri, int idx)
508 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
509 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
510 struct lpfc_io_buf *psb, *next_psb;
511 struct lpfc_sli4_hdw_queue *qp;
512 unsigned long iflag = 0;
513 struct lpfc_iocbq *iocbq;
515 struct lpfc_nodelist *ndlp;
517 struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring;
519 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
522 qp = &phba->sli4_hba.hdwq[idx];
523 spin_lock_irqsave(&phba->hbalock, iflag);
524 spin_lock(&qp->abts_io_buf_list_lock);
525 list_for_each_entry_safe(psb, next_psb,
526 &qp->lpfc_abts_io_buf_list, list) {
527 if (psb->cur_iocbq.sli4_xritag == xri) {
528 list_del_init(&psb->list);
529 psb->flags &= ~LPFC_SBUF_XBUSY;
530 psb->status = IOSTAT_SUCCESS;
531 if (psb->cur_iocbq.iocb_flag & LPFC_IO_NVME) {
532 qp->abts_nvme_io_bufs--;
533 spin_unlock(&qp->abts_io_buf_list_lock);
534 spin_unlock_irqrestore(&phba->hbalock, iflag);
535 lpfc_sli4_nvme_xri_aborted(phba, axri, psb);
538 qp->abts_scsi_io_bufs--;
539 spin_unlock(&qp->abts_io_buf_list_lock);
541 if (psb->rdata && psb->rdata->pnode)
542 ndlp = psb->rdata->pnode;
546 rrq_empty = list_empty(&phba->active_rrq_list);
547 spin_unlock_irqrestore(&phba->hbalock, iflag);
549 lpfc_set_rrq_active(phba, ndlp,
550 psb->cur_iocbq.sli4_lxritag, rxid, 1);
551 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
553 lpfc_release_scsi_buf_s4(phba, psb);
555 lpfc_worker_wake_up(phba);
559 spin_unlock(&qp->abts_io_buf_list_lock);
560 for (i = 1; i <= phba->sli.last_iotag; i++) {
561 iocbq = phba->sli.iocbq_lookup[i];
563 if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
564 (iocbq->iocb_flag & LPFC_IO_LIBDFC))
566 if (iocbq->sli4_xritag != xri)
568 psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
569 psb->flags &= ~LPFC_SBUF_XBUSY;
570 spin_unlock_irqrestore(&phba->hbalock, iflag);
571 if (!list_empty(&pring->txq))
572 lpfc_worker_wake_up(phba);
576 spin_unlock_irqrestore(&phba->hbalock, iflag);
580 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
581 * @phba: The HBA for which this call is being executed.
583 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
584 * and returns to caller.
588 * Pointer to lpfc_scsi_buf - Success
590 static struct lpfc_io_buf *
591 lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
592 struct scsi_cmnd *cmnd)
594 struct lpfc_io_buf *lpfc_cmd = NULL;
595 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
596 unsigned long iflag = 0;
598 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
599 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_io_buf,
602 spin_lock(&phba->scsi_buf_list_put_lock);
603 list_splice(&phba->lpfc_scsi_buf_list_put,
604 &phba->lpfc_scsi_buf_list_get);
605 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
606 list_remove_head(scsi_buf_list_get, lpfc_cmd,
607 struct lpfc_io_buf, list);
608 spin_unlock(&phba->scsi_buf_list_put_lock);
610 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
612 if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) {
613 atomic_inc(&ndlp->cmd_pending);
614 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
619 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from io_buf_list of the HBA
620 * @phba: The HBA for which this call is being executed.
622 * This routine removes a scsi buffer from head of @hdwq io_buf_list
623 * and returns to caller.
627 * Pointer to lpfc_scsi_buf - Success
629 static struct lpfc_io_buf *
630 lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
631 struct scsi_cmnd *cmnd)
633 struct lpfc_io_buf *lpfc_cmd;
634 struct lpfc_sli4_hdw_queue *qp;
635 struct sli4_sge *sgl;
637 dma_addr_t pdma_phys_fcp_rsp;
638 dma_addr_t pdma_phys_fcp_cmd;
641 struct fcp_cmd_rsp_buf *tmp = NULL;
643 cpu = raw_smp_processor_id();
644 if (cmnd && phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) {
645 tag = blk_mq_unique_tag(cmnd->request);
646 idx = blk_mq_unique_tag_to_hwq(tag);
648 idx = phba->sli4_hba.cpu_map[cpu].hdwq;
651 lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx,
652 !phba->cfg_xri_rebalancing);
654 qp = &phba->sli4_hba.hdwq[idx];
659 /* Setup key fields in buffer that may have been changed
660 * if other protocols used this buffer.
662 lpfc_cmd->cur_iocbq.iocb_flag = LPFC_IO_FCP;
663 lpfc_cmd->prot_seg_cnt = 0;
664 lpfc_cmd->seg_cnt = 0;
665 lpfc_cmd->timeout = 0;
667 lpfc_cmd->start_time = jiffies;
668 lpfc_cmd->waitq = NULL;
670 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
671 lpfc_cmd->prot_data_type = 0;
673 tmp = lpfc_get_cmd_rsp_buf_per_hdwq(phba, lpfc_cmd);
675 lpfc_release_io_buf(phba, lpfc_cmd, lpfc_cmd->hdwq);
679 lpfc_cmd->fcp_cmnd = tmp->fcp_cmnd;
680 lpfc_cmd->fcp_rsp = tmp->fcp_rsp;
683 * The first two SGEs are the FCP_CMD and FCP_RSP.
684 * The balance are sg list bdes. Initialize the
685 * first two and leave the rest for queuecommand.
687 sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
688 pdma_phys_fcp_cmd = tmp->fcp_cmd_rsp_dma_handle;
689 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
690 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
691 sgl->word2 = le32_to_cpu(sgl->word2);
692 bf_set(lpfc_sli4_sge_last, sgl, 0);
693 sgl->word2 = cpu_to_le32(sgl->word2);
694 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
697 /* Setup the physical region for the FCP RSP */
698 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
699 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
700 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
701 sgl->word2 = le32_to_cpu(sgl->word2);
702 bf_set(lpfc_sli4_sge_last, sgl, 1);
703 sgl->word2 = cpu_to_le32(sgl->word2);
704 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
707 * Since the IOCB for the FCP I/O is built into this
708 * lpfc_io_buf, initialize it with all known data now.
710 iocb = &lpfc_cmd->cur_iocbq.iocb;
711 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
712 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
713 /* setting the BLP size to 2 * sizeof BDE may not be correct.
714 * We are setting the bpl to point to out sgl. An sgl's
715 * entries are 16 bytes, a bpl entries are 12 bytes.
717 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
718 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
719 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
720 iocb->ulpBdeCount = 1;
722 iocb->ulpClass = CLASS3;
724 if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
725 atomic_inc(&ndlp->cmd_pending);
726 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
731 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
732 * @phba: The HBA for which this call is being executed.
734 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
735 * and returns to caller.
739 * Pointer to lpfc_scsi_buf - Success
741 static struct lpfc_io_buf*
742 lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
743 struct scsi_cmnd *cmnd)
745 return phba->lpfc_get_scsi_buf(phba, ndlp, cmnd);
749 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
750 * @phba: The Hba for which this call is being executed.
751 * @psb: The scsi buffer which is being released.
753 * This routine releases @psb scsi buffer by adding it to tail of @phba
754 * lpfc_scsi_buf_list list.
757 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
759 unsigned long iflag = 0;
762 psb->prot_seg_cnt = 0;
764 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
766 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
767 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
768 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
772 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
773 * @phba: The Hba for which this call is being executed.
774 * @psb: The scsi buffer which is being released.
776 * This routine releases @psb scsi buffer by adding it to tail of @hdwq
777 * io_buf_list list. For SLI4 XRI's are tied to the scsi buffer
778 * and cannot be reused for at least RA_TOV amount of time if it was
782 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
784 struct lpfc_sli4_hdw_queue *qp;
785 unsigned long iflag = 0;
788 psb->prot_seg_cnt = 0;
791 if (psb->flags & LPFC_SBUF_XBUSY) {
792 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag);
794 list_add_tail(&psb->list, &qp->lpfc_abts_io_buf_list);
795 qp->abts_scsi_io_bufs++;
796 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag);
798 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)psb, qp);
803 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
804 * @phba: The Hba for which this call is being executed.
805 * @psb: The scsi buffer which is being released.
807 * This routine releases @psb scsi buffer by adding it to tail of @phba
808 * lpfc_scsi_buf_list list.
811 lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
813 if ((psb->flags & LPFC_SBUF_BUMP_QDEPTH) && psb->ndlp)
814 atomic_dec(&psb->ndlp->cmd_pending);
816 psb->flags &= ~LPFC_SBUF_BUMP_QDEPTH;
817 phba->lpfc_release_scsi_buf(phba, psb);
821 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
822 * @phba: The Hba for which this call is being executed.
823 * @lpfc_cmd: The scsi buffer which is going to be mapped.
825 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
826 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
827 * through sg elements and format the bde. This routine also initializes all
828 * IOCB fields which are dependent on scsi command request buffer.
835 lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
837 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
838 struct scatterlist *sgel = NULL;
839 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
840 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl;
841 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
842 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
843 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
845 uint32_t num_bde = 0;
846 int nseg, datadir = scsi_cmnd->sc_data_direction;
849 * There are three possibilities here - use scatter-gather segment, use
850 * the single mapping, or neither. Start the lpfc command prep by
851 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
855 if (scsi_sg_count(scsi_cmnd)) {
857 * The driver stores the segment count returned from pci_map_sg
858 * because this a count of dma-mappings used to map the use_sg
859 * pages. They are not guaranteed to be the same for those
860 * architectures that implement an IOMMU.
863 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
864 scsi_sg_count(scsi_cmnd), datadir);
868 lpfc_cmd->seg_cnt = nseg;
869 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
870 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
871 "9064 BLKGRD: %s: Too many sg segments from "
872 "dma_map_sg. Config %d, seg_cnt %d\n",
873 __func__, phba->cfg_sg_seg_cnt,
875 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
876 lpfc_cmd->seg_cnt = 0;
877 scsi_dma_unmap(scsi_cmnd);
882 * The driver established a maximum scatter-gather segment count
883 * during probe that limits the number of sg elements in any
884 * single scsi command. Just run through the seg_cnt and format
886 * When using SLI-3 the driver will try to fit all the BDEs into
887 * the IOCB. If it can't then the BDEs get added to a BPL as it
888 * does for SLI-2 mode.
890 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
891 physaddr = sg_dma_address(sgel);
892 if (phba->sli_rev == 3 &&
893 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
894 !(iocbq->iocb_flag & DSS_SECURITY_OP) &&
895 nseg <= LPFC_EXT_DATA_BDE_COUNT) {
896 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
897 data_bde->tus.f.bdeSize = sg_dma_len(sgel);
898 data_bde->addrLow = putPaddrLow(physaddr);
899 data_bde->addrHigh = putPaddrHigh(physaddr);
902 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
903 bpl->tus.f.bdeSize = sg_dma_len(sgel);
904 bpl->tus.w = le32_to_cpu(bpl->tus.w);
906 le32_to_cpu(putPaddrLow(physaddr));
908 le32_to_cpu(putPaddrHigh(physaddr));
915 * Finish initializing those IOCB fields that are dependent on the
916 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
917 * explicitly reinitialized and for SLI-3 the extended bde count is
918 * explicitly reinitialized since all iocb memory resources are reused.
920 if (phba->sli_rev == 3 &&
921 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
922 !(iocbq->iocb_flag & DSS_SECURITY_OP)) {
923 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
925 * The extended IOCB format can only fit 3 BDE or a BPL.
926 * This I/O has more than 3 BDE so the 1st data bde will
927 * be a BPL that is filled in here.
929 physaddr = lpfc_cmd->dma_handle;
930 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
931 data_bde->tus.f.bdeSize = (num_bde *
932 sizeof(struct ulp_bde64));
933 physaddr += (sizeof(struct fcp_cmnd) +
934 sizeof(struct fcp_rsp) +
935 (2 * sizeof(struct ulp_bde64)));
936 data_bde->addrHigh = putPaddrHigh(physaddr);
937 data_bde->addrLow = putPaddrLow(physaddr);
938 /* ebde count includes the response bde and data bpl */
939 iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
941 /* ebde count includes the response bde and data bdes */
942 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
945 iocb_cmd->un.fcpi64.bdl.bdeSize =
946 ((num_bde + 2) * sizeof(struct ulp_bde64));
947 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
949 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
952 * Due to difference in data length between DIF/non-DIF paths,
953 * we need to set word 4 of IOCB here
955 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
959 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
961 /* Return BG_ERR_INIT if error injection is detected by Initiator */
962 #define BG_ERR_INIT 0x1
963 /* Return BG_ERR_TGT if error injection is detected by Target */
964 #define BG_ERR_TGT 0x2
965 /* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */
966 #define BG_ERR_SWAP 0x10
968 * Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for
971 #define BG_ERR_CHECK 0x20
974 * lpfc_bg_err_inject - Determine if we should inject an error
975 * @phba: The Hba for which this call is being executed.
976 * @sc: The SCSI command to examine
977 * @reftag: (out) BlockGuard reference tag for transmitted data
978 * @apptag: (out) BlockGuard application tag for transmitted data
979 * @new_guard (in) Value to replace CRC with if needed
981 * Returns BG_ERR_* bit mask or 0 if request ignored
984 lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
985 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
987 struct scatterlist *sgpe; /* s/g prot entry */
988 struct lpfc_io_buf *lpfc_cmd = NULL;
989 struct scsi_dif_tuple *src = NULL;
990 struct lpfc_nodelist *ndlp;
991 struct lpfc_rport_data *rdata;
992 uint32_t op = scsi_get_prot_op(sc);
999 if (op == SCSI_PROT_NORMAL)
1002 sgpe = scsi_prot_sglist(sc);
1003 lba = scsi_get_lba(sc);
1005 /* First check if we need to match the LBA */
1006 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
1007 blksize = lpfc_cmd_blksize(sc);
1008 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
1010 /* Make sure we have the right LBA if one is specified */
1011 if ((phba->lpfc_injerr_lba < lba) ||
1012 (phba->lpfc_injerr_lba >= (lba + numblks)))
1015 blockoff = phba->lpfc_injerr_lba - lba;
1016 numblks = sg_dma_len(sgpe) /
1017 sizeof(struct scsi_dif_tuple);
1018 if (numblks < blockoff)
1023 /* Next check if we need to match the remote NPortID or WWPN */
1024 rdata = lpfc_rport_data_from_scsi_device(sc->device);
1025 if (rdata && rdata->pnode) {
1026 ndlp = rdata->pnode;
1028 /* Make sure we have the right NPortID if one is specified */
1029 if (phba->lpfc_injerr_nportid &&
1030 (phba->lpfc_injerr_nportid != ndlp->nlp_DID))
1034 * Make sure we have the right WWPN if one is specified.
1035 * wwn[0] should be a non-zero NAA in a good WWPN.
1037 if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
1038 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
1039 sizeof(struct lpfc_name)) != 0))
1043 /* Setup a ptr to the protection data if the SCSI host provides it */
1045 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
1047 lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble;
1050 /* Should we change the Reference Tag */
1052 if (phba->lpfc_injerr_wref_cnt) {
1054 case SCSI_PROT_WRITE_PASS:
1057 * For WRITE_PASS, force the error
1058 * to be sent on the wire. It should
1059 * be detected by the Target.
1060 * If blockoff != 0 error will be
1061 * inserted in middle of the IO.
1064 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1065 "9076 BLKGRD: Injecting reftag error: "
1066 "write lba x%lx + x%x oldrefTag x%x\n",
1067 (unsigned long)lba, blockoff,
1068 be32_to_cpu(src->ref_tag));
1071 * Save the old ref_tag so we can
1072 * restore it on completion.
1075 lpfc_cmd->prot_data_type =
1077 lpfc_cmd->prot_data_segment =
1079 lpfc_cmd->prot_data =
1082 src->ref_tag = cpu_to_be32(0xDEADBEEF);
1083 phba->lpfc_injerr_wref_cnt--;
1084 if (phba->lpfc_injerr_wref_cnt == 0) {
1085 phba->lpfc_injerr_nportid = 0;
1086 phba->lpfc_injerr_lba =
1087 LPFC_INJERR_LBA_OFF;
1088 memset(&phba->lpfc_injerr_wwpn,
1089 0, sizeof(struct lpfc_name));
1091 rc = BG_ERR_TGT | BG_ERR_CHECK;
1096 case SCSI_PROT_WRITE_INSERT:
1098 * For WRITE_INSERT, force the error
1099 * to be sent on the wire. It should be
1100 * detected by the Target.
1102 /* DEADBEEF will be the reftag on the wire */
1103 *reftag = 0xDEADBEEF;
1104 phba->lpfc_injerr_wref_cnt--;
1105 if (phba->lpfc_injerr_wref_cnt == 0) {
1106 phba->lpfc_injerr_nportid = 0;
1107 phba->lpfc_injerr_lba =
1108 LPFC_INJERR_LBA_OFF;
1109 memset(&phba->lpfc_injerr_wwpn,
1110 0, sizeof(struct lpfc_name));
1112 rc = BG_ERR_TGT | BG_ERR_CHECK;
1114 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1115 "9078 BLKGRD: Injecting reftag error: "
1116 "write lba x%lx\n", (unsigned long)lba);
1118 case SCSI_PROT_WRITE_STRIP:
1120 * For WRITE_STRIP and WRITE_PASS,
1121 * force the error on data
1122 * being copied from SLI-Host to SLI-Port.
1124 *reftag = 0xDEADBEEF;
1125 phba->lpfc_injerr_wref_cnt--;
1126 if (phba->lpfc_injerr_wref_cnt == 0) {
1127 phba->lpfc_injerr_nportid = 0;
1128 phba->lpfc_injerr_lba =
1129 LPFC_INJERR_LBA_OFF;
1130 memset(&phba->lpfc_injerr_wwpn,
1131 0, sizeof(struct lpfc_name));
1135 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1136 "9077 BLKGRD: Injecting reftag error: "
1137 "write lba x%lx\n", (unsigned long)lba);
1141 if (phba->lpfc_injerr_rref_cnt) {
1143 case SCSI_PROT_READ_INSERT:
1144 case SCSI_PROT_READ_STRIP:
1145 case SCSI_PROT_READ_PASS:
1147 * For READ_STRIP and READ_PASS, force the
1148 * error on data being read off the wire. It
1149 * should force an IO error to the driver.
1151 *reftag = 0xDEADBEEF;
1152 phba->lpfc_injerr_rref_cnt--;
1153 if (phba->lpfc_injerr_rref_cnt == 0) {
1154 phba->lpfc_injerr_nportid = 0;
1155 phba->lpfc_injerr_lba =
1156 LPFC_INJERR_LBA_OFF;
1157 memset(&phba->lpfc_injerr_wwpn,
1158 0, sizeof(struct lpfc_name));
1162 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1163 "9079 BLKGRD: Injecting reftag error: "
1164 "read lba x%lx\n", (unsigned long)lba);
1170 /* Should we change the Application Tag */
1172 if (phba->lpfc_injerr_wapp_cnt) {
1174 case SCSI_PROT_WRITE_PASS:
1177 * For WRITE_PASS, force the error
1178 * to be sent on the wire. It should
1179 * be detected by the Target.
1180 * If blockoff != 0 error will be
1181 * inserted in middle of the IO.
1184 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1185 "9080 BLKGRD: Injecting apptag error: "
1186 "write lba x%lx + x%x oldappTag x%x\n",
1187 (unsigned long)lba, blockoff,
1188 be16_to_cpu(src->app_tag));
1191 * Save the old app_tag so we can
1192 * restore it on completion.
1195 lpfc_cmd->prot_data_type =
1197 lpfc_cmd->prot_data_segment =
1199 lpfc_cmd->prot_data =
1202 src->app_tag = cpu_to_be16(0xDEAD);
1203 phba->lpfc_injerr_wapp_cnt--;
1204 if (phba->lpfc_injerr_wapp_cnt == 0) {
1205 phba->lpfc_injerr_nportid = 0;
1206 phba->lpfc_injerr_lba =
1207 LPFC_INJERR_LBA_OFF;
1208 memset(&phba->lpfc_injerr_wwpn,
1209 0, sizeof(struct lpfc_name));
1211 rc = BG_ERR_TGT | BG_ERR_CHECK;
1215 case SCSI_PROT_WRITE_INSERT:
1217 * For WRITE_INSERT, force the
1218 * error to be sent on the wire. It should be
1219 * detected by the Target.
1221 /* DEAD will be the apptag on the wire */
1223 phba->lpfc_injerr_wapp_cnt--;
1224 if (phba->lpfc_injerr_wapp_cnt == 0) {
1225 phba->lpfc_injerr_nportid = 0;
1226 phba->lpfc_injerr_lba =
1227 LPFC_INJERR_LBA_OFF;
1228 memset(&phba->lpfc_injerr_wwpn,
1229 0, sizeof(struct lpfc_name));
1231 rc = BG_ERR_TGT | BG_ERR_CHECK;
1233 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1234 "0813 BLKGRD: Injecting apptag error: "
1235 "write lba x%lx\n", (unsigned long)lba);
1237 case SCSI_PROT_WRITE_STRIP:
1239 * For WRITE_STRIP and WRITE_PASS,
1240 * force the error on data
1241 * being copied from SLI-Host to SLI-Port.
1244 phba->lpfc_injerr_wapp_cnt--;
1245 if (phba->lpfc_injerr_wapp_cnt == 0) {
1246 phba->lpfc_injerr_nportid = 0;
1247 phba->lpfc_injerr_lba =
1248 LPFC_INJERR_LBA_OFF;
1249 memset(&phba->lpfc_injerr_wwpn,
1250 0, sizeof(struct lpfc_name));
1254 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1255 "0812 BLKGRD: Injecting apptag error: "
1256 "write lba x%lx\n", (unsigned long)lba);
1260 if (phba->lpfc_injerr_rapp_cnt) {
1262 case SCSI_PROT_READ_INSERT:
1263 case SCSI_PROT_READ_STRIP:
1264 case SCSI_PROT_READ_PASS:
1266 * For READ_STRIP and READ_PASS, force the
1267 * error on data being read off the wire. It
1268 * should force an IO error to the driver.
1271 phba->lpfc_injerr_rapp_cnt--;
1272 if (phba->lpfc_injerr_rapp_cnt == 0) {
1273 phba->lpfc_injerr_nportid = 0;
1274 phba->lpfc_injerr_lba =
1275 LPFC_INJERR_LBA_OFF;
1276 memset(&phba->lpfc_injerr_wwpn,
1277 0, sizeof(struct lpfc_name));
1281 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1282 "0814 BLKGRD: Injecting apptag error: "
1283 "read lba x%lx\n", (unsigned long)lba);
1290 /* Should we change the Guard Tag */
1292 if (phba->lpfc_injerr_wgrd_cnt) {
1294 case SCSI_PROT_WRITE_PASS:
1298 case SCSI_PROT_WRITE_INSERT:
1300 * For WRITE_INSERT, force the
1301 * error to be sent on the wire. It should be
1302 * detected by the Target.
1304 phba->lpfc_injerr_wgrd_cnt--;
1305 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1306 phba->lpfc_injerr_nportid = 0;
1307 phba->lpfc_injerr_lba =
1308 LPFC_INJERR_LBA_OFF;
1309 memset(&phba->lpfc_injerr_wwpn,
1310 0, sizeof(struct lpfc_name));
1313 rc |= BG_ERR_TGT | BG_ERR_SWAP;
1314 /* Signals the caller to swap CRC->CSUM */
1316 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1317 "0817 BLKGRD: Injecting guard error: "
1318 "write lba x%lx\n", (unsigned long)lba);
1320 case SCSI_PROT_WRITE_STRIP:
1322 * For WRITE_STRIP and WRITE_PASS,
1323 * force the error on data
1324 * being copied from SLI-Host to SLI-Port.
1326 phba->lpfc_injerr_wgrd_cnt--;
1327 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1328 phba->lpfc_injerr_nportid = 0;
1329 phba->lpfc_injerr_lba =
1330 LPFC_INJERR_LBA_OFF;
1331 memset(&phba->lpfc_injerr_wwpn,
1332 0, sizeof(struct lpfc_name));
1335 rc = BG_ERR_INIT | BG_ERR_SWAP;
1336 /* Signals the caller to swap CRC->CSUM */
1338 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1339 "0816 BLKGRD: Injecting guard error: "
1340 "write lba x%lx\n", (unsigned long)lba);
1344 if (phba->lpfc_injerr_rgrd_cnt) {
1346 case SCSI_PROT_READ_INSERT:
1347 case SCSI_PROT_READ_STRIP:
1348 case SCSI_PROT_READ_PASS:
1350 * For READ_STRIP and READ_PASS, force the
1351 * error on data being read off the wire. It
1352 * should force an IO error to the driver.
1354 phba->lpfc_injerr_rgrd_cnt--;
1355 if (phba->lpfc_injerr_rgrd_cnt == 0) {
1356 phba->lpfc_injerr_nportid = 0;
1357 phba->lpfc_injerr_lba =
1358 LPFC_INJERR_LBA_OFF;
1359 memset(&phba->lpfc_injerr_wwpn,
1360 0, sizeof(struct lpfc_name));
1363 rc = BG_ERR_INIT | BG_ERR_SWAP;
1364 /* Signals the caller to swap CRC->CSUM */
1366 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1367 "0818 BLKGRD: Injecting guard error: "
1368 "read lba x%lx\n", (unsigned long)lba);
1378 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
1379 * the specified SCSI command.
1380 * @phba: The Hba for which this call is being executed.
1381 * @sc: The SCSI command to examine
1382 * @txopt: (out) BlockGuard operation for transmitted data
1383 * @rxopt: (out) BlockGuard operation for received data
1385 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1389 lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1390 uint8_t *txop, uint8_t *rxop)
1394 if (lpfc_cmd_guard_csum(sc)) {
1395 switch (scsi_get_prot_op(sc)) {
1396 case SCSI_PROT_READ_INSERT:
1397 case SCSI_PROT_WRITE_STRIP:
1398 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
1399 *txop = BG_OP_IN_CSUM_OUT_NODIF;
1402 case SCSI_PROT_READ_STRIP:
1403 case SCSI_PROT_WRITE_INSERT:
1404 *rxop = BG_OP_IN_CRC_OUT_NODIF;
1405 *txop = BG_OP_IN_NODIF_OUT_CRC;
1408 case SCSI_PROT_READ_PASS:
1409 case SCSI_PROT_WRITE_PASS:
1410 *rxop = BG_OP_IN_CRC_OUT_CSUM;
1411 *txop = BG_OP_IN_CSUM_OUT_CRC;
1414 case SCSI_PROT_NORMAL:
1416 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1417 "9063 BLKGRD: Bad op/guard:%d/IP combination\n",
1418 scsi_get_prot_op(sc));
1424 switch (scsi_get_prot_op(sc)) {
1425 case SCSI_PROT_READ_STRIP:
1426 case SCSI_PROT_WRITE_INSERT:
1427 *rxop = BG_OP_IN_CRC_OUT_NODIF;
1428 *txop = BG_OP_IN_NODIF_OUT_CRC;
1431 case SCSI_PROT_READ_PASS:
1432 case SCSI_PROT_WRITE_PASS:
1433 *rxop = BG_OP_IN_CRC_OUT_CRC;
1434 *txop = BG_OP_IN_CRC_OUT_CRC;
1437 case SCSI_PROT_READ_INSERT:
1438 case SCSI_PROT_WRITE_STRIP:
1439 *rxop = BG_OP_IN_NODIF_OUT_CRC;
1440 *txop = BG_OP_IN_CRC_OUT_NODIF;
1443 case SCSI_PROT_NORMAL:
1445 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1446 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
1447 scsi_get_prot_op(sc));
1456 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1458 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
1459 * the specified SCSI command in order to force a guard tag error.
1460 * @phba: The Hba for which this call is being executed.
1461 * @sc: The SCSI command to examine
1462 * @txopt: (out) BlockGuard operation for transmitted data
1463 * @rxopt: (out) BlockGuard operation for received data
1465 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1469 lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1470 uint8_t *txop, uint8_t *rxop)
1474 if (lpfc_cmd_guard_csum(sc)) {
1475 switch (scsi_get_prot_op(sc)) {
1476 case SCSI_PROT_READ_INSERT:
1477 case SCSI_PROT_WRITE_STRIP:
1478 *rxop = BG_OP_IN_NODIF_OUT_CRC;
1479 *txop = BG_OP_IN_CRC_OUT_NODIF;
1482 case SCSI_PROT_READ_STRIP:
1483 case SCSI_PROT_WRITE_INSERT:
1484 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
1485 *txop = BG_OP_IN_NODIF_OUT_CSUM;
1488 case SCSI_PROT_READ_PASS:
1489 case SCSI_PROT_WRITE_PASS:
1490 *rxop = BG_OP_IN_CSUM_OUT_CRC;
1491 *txop = BG_OP_IN_CRC_OUT_CSUM;
1494 case SCSI_PROT_NORMAL:
1500 switch (scsi_get_prot_op(sc)) {
1501 case SCSI_PROT_READ_STRIP:
1502 case SCSI_PROT_WRITE_INSERT:
1503 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
1504 *txop = BG_OP_IN_NODIF_OUT_CSUM;
1507 case SCSI_PROT_READ_PASS:
1508 case SCSI_PROT_WRITE_PASS:
1509 *rxop = BG_OP_IN_CSUM_OUT_CSUM;
1510 *txop = BG_OP_IN_CSUM_OUT_CSUM;
1513 case SCSI_PROT_READ_INSERT:
1514 case SCSI_PROT_WRITE_STRIP:
1515 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
1516 *txop = BG_OP_IN_CSUM_OUT_NODIF;
1519 case SCSI_PROT_NORMAL:
1530 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
1531 * @phba: The Hba for which this call is being executed.
1532 * @sc: pointer to scsi command we're working on
1533 * @bpl: pointer to buffer list for protection groups
1534 * @datacnt: number of segments of data that have been dma mapped
1536 * This function sets up BPL buffer list for protection groups of
1537 * type LPFC_PG_TYPE_NO_DIF
1539 * This is usually used when the HBA is instructed to generate
1540 * DIFs and insert them into data stream (or strip DIF from
1541 * incoming data stream)
1543 * The buffer list consists of just one protection group described
1545 * +-------------------------+
1546 * start of prot group --> | PDE_5 |
1547 * +-------------------------+
1549 * +-------------------------+
1551 * +-------------------------+
1552 * |more Data BDE's ... (opt)|
1553 * +-------------------------+
1556 * Note: Data s/g buffers have been dma mapped
1558 * Returns the number of BDEs added to the BPL.
1561 lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1562 struct ulp_bde64 *bpl, int datasegcnt)
1564 struct scatterlist *sgde = NULL; /* s/g data entry */
1565 struct lpfc_pde5 *pde5 = NULL;
1566 struct lpfc_pde6 *pde6 = NULL;
1567 dma_addr_t physaddr;
1568 int i = 0, num_bde = 0, status;
1569 int datadir = sc->sc_data_direction;
1570 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1573 uint32_t checking = 1;
1577 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
1581 /* extract some info from the scsi command for pde*/
1582 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
1584 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1585 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
1587 if (rc & BG_ERR_SWAP)
1588 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
1589 if (rc & BG_ERR_CHECK)
1594 /* setup PDE5 with what we have */
1595 pde5 = (struct lpfc_pde5 *) bpl;
1596 memset(pde5, 0, sizeof(struct lpfc_pde5));
1597 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
1599 /* Endianness conversion if necessary for PDE5 */
1600 pde5->word0 = cpu_to_le32(pde5->word0);
1601 pde5->reftag = cpu_to_le32(reftag);
1603 /* advance bpl and increment bde count */
1606 pde6 = (struct lpfc_pde6 *) bpl;
1608 /* setup PDE6 with the rest of the info */
1609 memset(pde6, 0, sizeof(struct lpfc_pde6));
1610 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
1611 bf_set(pde6_optx, pde6, txop);
1612 bf_set(pde6_oprx, pde6, rxop);
1615 * We only need to check the data on READs, for WRITEs
1616 * protection data is automatically generated, not checked.
1618 if (datadir == DMA_FROM_DEVICE) {
1619 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
1620 bf_set(pde6_ce, pde6, checking);
1622 bf_set(pde6_ce, pde6, 0);
1624 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
1625 bf_set(pde6_re, pde6, checking);
1627 bf_set(pde6_re, pde6, 0);
1629 bf_set(pde6_ai, pde6, 1);
1630 bf_set(pde6_ae, pde6, 0);
1631 bf_set(pde6_apptagval, pde6, 0);
1633 /* Endianness conversion if necessary for PDE6 */
1634 pde6->word0 = cpu_to_le32(pde6->word0);
1635 pde6->word1 = cpu_to_le32(pde6->word1);
1636 pde6->word2 = cpu_to_le32(pde6->word2);
1638 /* advance bpl and increment bde count */
1642 /* assumption: caller has already run dma_map_sg on command data */
1643 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
1644 physaddr = sg_dma_address(sgde);
1645 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
1646 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
1647 bpl->tus.f.bdeSize = sg_dma_len(sgde);
1648 if (datadir == DMA_TO_DEVICE)
1649 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1651 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
1652 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1662 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
1663 * @phba: The Hba for which this call is being executed.
1664 * @sc: pointer to scsi command we're working on
1665 * @bpl: pointer to buffer list for protection groups
1666 * @datacnt: number of segments of data that have been dma mapped
1667 * @protcnt: number of segment of protection data that have been dma mapped
1669 * This function sets up BPL buffer list for protection groups of
1670 * type LPFC_PG_TYPE_DIF
1672 * This is usually used when DIFs are in their own buffers,
1673 * separate from the data. The HBA can then by instructed
1674 * to place the DIFs in the outgoing stream. For read operations,
1675 * The HBA could extract the DIFs and place it in DIF buffers.
1677 * The buffer list for this type consists of one or more of the
1678 * protection groups described below:
1679 * +-------------------------+
1680 * start of first prot group --> | PDE_5 |
1681 * +-------------------------+
1683 * +-------------------------+
1684 * | PDE_7 (Prot BDE) |
1685 * +-------------------------+
1687 * +-------------------------+
1688 * |more Data BDE's ... (opt)|
1689 * +-------------------------+
1690 * start of new prot group --> | PDE_5 |
1691 * +-------------------------+
1693 * +-------------------------+
1695 * Note: It is assumed that both data and protection s/g buffers have been
1698 * Returns the number of BDEs added to the BPL.
1701 lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1702 struct ulp_bde64 *bpl, int datacnt, int protcnt)
1704 struct scatterlist *sgde = NULL; /* s/g data entry */
1705 struct scatterlist *sgpe = NULL; /* s/g prot entry */
1706 struct lpfc_pde5 *pde5 = NULL;
1707 struct lpfc_pde6 *pde6 = NULL;
1708 struct lpfc_pde7 *pde7 = NULL;
1709 dma_addr_t dataphysaddr, protphysaddr;
1710 unsigned short curr_data = 0, curr_prot = 0;
1711 unsigned int split_offset;
1712 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
1713 unsigned int protgrp_blks, protgrp_bytes;
1714 unsigned int remainder, subtotal;
1716 int datadir = sc->sc_data_direction;
1717 unsigned char pgdone = 0, alldone = 0;
1719 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1722 uint32_t checking = 1;
1727 sgpe = scsi_prot_sglist(sc);
1728 sgde = scsi_sglist(sc);
1730 if (!sgpe || !sgde) {
1731 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
1732 "9020 Invalid s/g entry: data=x%px prot=x%px\n",
1737 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
1741 /* extract some info from the scsi command */
1742 blksize = lpfc_cmd_blksize(sc);
1743 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
1745 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1746 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
1748 if (rc & BG_ERR_SWAP)
1749 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
1750 if (rc & BG_ERR_CHECK)
1757 /* Check to see if we ran out of space */
1758 if (num_bde >= (phba->cfg_total_seg_cnt - 2))
1761 /* setup PDE5 with what we have */
1762 pde5 = (struct lpfc_pde5 *) bpl;
1763 memset(pde5, 0, sizeof(struct lpfc_pde5));
1764 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
1766 /* Endianness conversion if necessary for PDE5 */
1767 pde5->word0 = cpu_to_le32(pde5->word0);
1768 pde5->reftag = cpu_to_le32(reftag);
1770 /* advance bpl and increment bde count */
1773 pde6 = (struct lpfc_pde6 *) bpl;
1775 /* setup PDE6 with the rest of the info */
1776 memset(pde6, 0, sizeof(struct lpfc_pde6));
1777 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
1778 bf_set(pde6_optx, pde6, txop);
1779 bf_set(pde6_oprx, pde6, rxop);
1781 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
1782 bf_set(pde6_ce, pde6, checking);
1784 bf_set(pde6_ce, pde6, 0);
1786 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
1787 bf_set(pde6_re, pde6, checking);
1789 bf_set(pde6_re, pde6, 0);
1791 bf_set(pde6_ai, pde6, 1);
1792 bf_set(pde6_ae, pde6, 0);
1793 bf_set(pde6_apptagval, pde6, 0);
1795 /* Endianness conversion if necessary for PDE6 */
1796 pde6->word0 = cpu_to_le32(pde6->word0);
1797 pde6->word1 = cpu_to_le32(pde6->word1);
1798 pde6->word2 = cpu_to_le32(pde6->word2);
1800 /* advance bpl and increment bde count */
1804 /* setup the first BDE that points to protection buffer */
1805 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
1806 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
1808 /* must be integer multiple of the DIF block length */
1809 BUG_ON(protgroup_len % 8);
1811 pde7 = (struct lpfc_pde7 *) bpl;
1812 memset(pde7, 0, sizeof(struct lpfc_pde7));
1813 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
1815 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
1816 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
1818 protgrp_blks = protgroup_len / 8;
1819 protgrp_bytes = protgrp_blks * blksize;
1821 /* check if this pde is crossing the 4K boundary; if so split */
1822 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
1823 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
1824 protgroup_offset += protgroup_remainder;
1825 protgrp_blks = protgroup_remainder / 8;
1826 protgrp_bytes = protgrp_blks * blksize;
1828 protgroup_offset = 0;
1834 /* setup BDE's for data blocks associated with DIF data */
1836 subtotal = 0; /* total bytes processed for current prot grp */
1838 /* Check to see if we ran out of space */
1839 if (num_bde >= phba->cfg_total_seg_cnt)
1843 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1844 "9065 BLKGRD:%s Invalid data segment\n",
1849 dataphysaddr = sg_dma_address(sgde) + split_offset;
1850 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
1851 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
1853 remainder = sg_dma_len(sgde) - split_offset;
1855 if ((subtotal + remainder) <= protgrp_bytes) {
1856 /* we can use this whole buffer */
1857 bpl->tus.f.bdeSize = remainder;
1860 if ((subtotal + remainder) == protgrp_bytes)
1863 /* must split this buffer with next prot grp */
1864 bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
1865 split_offset += bpl->tus.f.bdeSize;
1868 subtotal += bpl->tus.f.bdeSize;
1870 if (datadir == DMA_TO_DEVICE)
1871 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1873 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
1874 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1882 /* Move to the next s/g segment if possible */
1883 sgde = sg_next(sgde);
1887 if (protgroup_offset) {
1888 /* update the reference tag */
1889 reftag += protgrp_blks;
1895 if (curr_prot == protcnt) {
1897 } else if (curr_prot < protcnt) {
1898 /* advance to next prot buffer */
1899 sgpe = sg_next(sgpe);
1902 /* update the reference tag */
1903 reftag += protgrp_blks;
1905 /* if we're here, we have a bug */
1906 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1907 "9054 BLKGRD: bug in %s\n", __func__);
1917 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
1918 * @phba: The Hba for which this call is being executed.
1919 * @sc: pointer to scsi command we're working on
1920 * @sgl: pointer to buffer list for protection groups
1921 * @datacnt: number of segments of data that have been dma mapped
1923 * This function sets up SGL buffer list for protection groups of
1924 * type LPFC_PG_TYPE_NO_DIF
1926 * This is usually used when the HBA is instructed to generate
1927 * DIFs and insert them into data stream (or strip DIF from
1928 * incoming data stream)
1930 * The buffer list consists of just one protection group described
1932 * +-------------------------+
1933 * start of prot group --> | DI_SEED |
1934 * +-------------------------+
1936 * +-------------------------+
1937 * |more Data SGE's ... (opt)|
1938 * +-------------------------+
1941 * Note: Data s/g buffers have been dma mapped
1943 * Returns the number of SGEs added to the SGL.
1946 lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1947 struct sli4_sge *sgl, int datasegcnt,
1948 struct lpfc_io_buf *lpfc_cmd)
1950 struct scatterlist *sgde = NULL; /* s/g data entry */
1951 struct sli4_sge_diseed *diseed = NULL;
1952 dma_addr_t physaddr;
1953 int i = 0, num_sge = 0, status;
1956 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1959 uint32_t checking = 1;
1961 uint32_t dma_offset = 0;
1962 struct sli4_hybrid_sgl *sgl_xtra = NULL;
1964 bool lsp_just_set = false;
1966 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
1970 /* extract some info from the scsi command for pde*/
1971 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
1973 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1974 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
1976 if (rc & BG_ERR_SWAP)
1977 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
1978 if (rc & BG_ERR_CHECK)
1983 /* setup DISEED with what we have */
1984 diseed = (struct sli4_sge_diseed *) sgl;
1985 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
1986 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
1988 /* Endianness conversion if necessary */
1989 diseed->ref_tag = cpu_to_le32(reftag);
1990 diseed->ref_tag_tran = diseed->ref_tag;
1993 * We only need to check the data on READs, for WRITEs
1994 * protection data is automatically generated, not checked.
1996 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
1997 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
1998 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2000 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2002 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2003 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2005 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2008 /* setup DISEED with the rest of the info */
2009 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2010 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
2012 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2013 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2015 /* Endianness conversion if necessary for DISEED */
2016 diseed->word2 = cpu_to_le32(diseed->word2);
2017 diseed->word3 = cpu_to_le32(diseed->word3);
2019 /* advance bpl and increment sge count */
2023 /* assumption: caller has already run dma_map_sg on command data */
2024 sgde = scsi_sglist(sc);
2026 for (i = 0; i < datasegcnt; i++) {
2030 /* do we need to expand the segment */
2031 if (!lsp_just_set && !((j + 1) % phba->border_sge_num) &&
2032 ((datasegcnt - 1) != i)) {
2034 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP);
2036 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd);
2038 if (unlikely(!sgl_xtra)) {
2039 lpfc_cmd->seg_cnt = 0;
2042 sgl->addr_lo = cpu_to_le32(putPaddrLow(
2043 sgl_xtra->dma_phys_sgl));
2044 sgl->addr_hi = cpu_to_le32(putPaddrHigh(
2045 sgl_xtra->dma_phys_sgl));
2048 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2051 if (!(bf_get(lpfc_sli4_sge_type, sgl) & LPFC_SGE_TYPE_LSP)) {
2052 if ((datasegcnt - 1) == i)
2053 bf_set(lpfc_sli4_sge_last, sgl, 1);
2054 physaddr = sg_dma_address(sgde);
2055 dma_len = sg_dma_len(sgde);
2056 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
2057 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
2059 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2060 sgl->word2 = cpu_to_le32(sgl->word2);
2061 sgl->sge_len = cpu_to_le32(dma_len);
2063 dma_offset += dma_len;
2064 sgde = sg_next(sgde);
2068 lsp_just_set = false;
2071 sgl->word2 = cpu_to_le32(sgl->word2);
2072 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size);
2074 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
2077 lsp_just_set = true;
2089 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
2090 * @phba: The Hba for which this call is being executed.
2091 * @sc: pointer to scsi command we're working on
2092 * @sgl: pointer to buffer list for protection groups
2093 * @datacnt: number of segments of data that have been dma mapped
2094 * @protcnt: number of segment of protection data that have been dma mapped
2096 * This function sets up SGL buffer list for protection groups of
2097 * type LPFC_PG_TYPE_DIF
2099 * This is usually used when DIFs are in their own buffers,
2100 * separate from the data. The HBA can then by instructed
2101 * to place the DIFs in the outgoing stream. For read operations,
2102 * The HBA could extract the DIFs and place it in DIF buffers.
2104 * The buffer list for this type consists of one or more of the
2105 * protection groups described below:
2106 * +-------------------------+
2107 * start of first prot group --> | DISEED |
2108 * +-------------------------+
2109 * | DIF (Prot SGE) |
2110 * +-------------------------+
2112 * +-------------------------+
2113 * |more Data SGE's ... (opt)|
2114 * +-------------------------+
2115 * start of new prot group --> | DISEED |
2116 * +-------------------------+
2118 * +-------------------------+
2120 * Note: It is assumed that both data and protection s/g buffers have been
2123 * Returns the number of SGEs added to the SGL.
2126 lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2127 struct sli4_sge *sgl, int datacnt, int protcnt,
2128 struct lpfc_io_buf *lpfc_cmd)
2130 struct scatterlist *sgde = NULL; /* s/g data entry */
2131 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2132 struct sli4_sge_diseed *diseed = NULL;
2133 dma_addr_t dataphysaddr, protphysaddr;
2134 unsigned short curr_data = 0, curr_prot = 0;
2135 unsigned int split_offset;
2136 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2137 unsigned int protgrp_blks, protgrp_bytes;
2138 unsigned int remainder, subtotal;
2140 unsigned char pgdone = 0, alldone = 0;
2145 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2148 uint32_t checking = 1;
2149 uint32_t dma_offset = 0;
2150 int num_sge = 0, j = 2;
2151 struct sli4_hybrid_sgl *sgl_xtra = NULL;
2153 sgpe = scsi_prot_sglist(sc);
2154 sgde = scsi_sglist(sc);
2156 if (!sgpe || !sgde) {
2157 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2158 "9082 Invalid s/g entry: data=x%px prot=x%px\n",
2163 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2167 /* extract some info from the scsi command */
2168 blksize = lpfc_cmd_blksize(sc);
2169 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2171 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2172 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2174 if (rc & BG_ERR_SWAP)
2175 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2176 if (rc & BG_ERR_CHECK)
2183 /* Check to see if we ran out of space */
2184 if ((num_sge >= (phba->cfg_total_seg_cnt - 2)) &&
2188 /* DISEED and DIF have to be together */
2189 if (!((j + 1) % phba->border_sge_num) ||
2190 !((j + 2) % phba->border_sge_num) ||
2191 !((j + 3) % phba->border_sge_num)) {
2195 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP);
2197 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd);
2199 if (unlikely(!sgl_xtra)) {
2202 sgl->addr_lo = cpu_to_le32(putPaddrLow(
2203 sgl_xtra->dma_phys_sgl));
2204 sgl->addr_hi = cpu_to_le32(putPaddrHigh(
2205 sgl_xtra->dma_phys_sgl));
2208 sgl->word2 = cpu_to_le32(sgl->word2);
2209 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size);
2211 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
2215 /* setup DISEED with what we have */
2216 diseed = (struct sli4_sge_diseed *) sgl;
2217 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2218 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2220 /* Endianness conversion if necessary */
2221 diseed->ref_tag = cpu_to_le32(reftag);
2222 diseed->ref_tag_tran = diseed->ref_tag;
2224 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
2225 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2228 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2230 * When in this mode, the hardware will replace
2231 * the guard tag from the host with a
2232 * newly generated good CRC for the wire.
2233 * Switch to raw mode here to avoid this
2234 * behavior. What the host sends gets put on the wire.
2236 if (txop == BG_OP_IN_CRC_OUT_CRC) {
2237 txop = BG_OP_RAW_MODE;
2238 rxop = BG_OP_RAW_MODE;
2243 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2244 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2246 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2248 /* setup DISEED with the rest of the info */
2249 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2250 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
2252 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2253 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2255 /* Endianness conversion if necessary for DISEED */
2256 diseed->word2 = cpu_to_le32(diseed->word2);
2257 diseed->word3 = cpu_to_le32(diseed->word3);
2259 /* advance sgl and increment bde count */
2265 /* setup the first BDE that points to protection buffer */
2266 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2267 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2269 /* must be integer multiple of the DIF block length */
2270 BUG_ON(protgroup_len % 8);
2272 /* Now setup DIF SGE */
2274 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
2275 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
2276 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
2277 sgl->word2 = cpu_to_le32(sgl->word2);
2280 protgrp_blks = protgroup_len / 8;
2281 protgrp_bytes = protgrp_blks * blksize;
2283 /* check if DIF SGE is crossing the 4K boundary; if so split */
2284 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
2285 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
2286 protgroup_offset += protgroup_remainder;
2287 protgrp_blks = protgroup_remainder / 8;
2288 protgrp_bytes = protgrp_blks * blksize;
2290 protgroup_offset = 0;
2296 /* setup SGE's for data blocks associated with DIF data */
2298 subtotal = 0; /* total bytes processed for current prot grp */
2304 /* Check to see if we ran out of space */
2305 if ((num_sge >= phba->cfg_total_seg_cnt) &&
2310 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2311 "9086 BLKGRD:%s Invalid data segment\n",
2316 if (!((j + 1) % phba->border_sge_num)) {
2320 bf_set(lpfc_sli4_sge_type, sgl,
2323 sgl_xtra = lpfc_get_sgl_per_hdwq(phba,
2326 if (unlikely(!sgl_xtra)) {
2329 sgl->addr_lo = cpu_to_le32(
2330 putPaddrLow(sgl_xtra->dma_phys_sgl));
2331 sgl->addr_hi = cpu_to_le32(
2332 putPaddrHigh(sgl_xtra->dma_phys_sgl));
2335 sgl->word2 = cpu_to_le32(sgl->word2);
2336 sgl->sge_len = cpu_to_le32(
2337 phba->cfg_sg_dma_buf_size);
2339 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
2341 dataphysaddr = sg_dma_address(sgde) +
2344 remainder = sg_dma_len(sgde) - split_offset;
2346 if ((subtotal + remainder) <= protgrp_bytes) {
2347 /* we can use this whole buffer */
2348 dma_len = remainder;
2351 if ((subtotal + remainder) ==
2355 /* must split this buffer with next
2358 dma_len = protgrp_bytes - subtotal;
2359 split_offset += dma_len;
2362 subtotal += dma_len;
2365 sgl->addr_lo = cpu_to_le32(putPaddrLow(
2367 sgl->addr_hi = cpu_to_le32(putPaddrHigh(
2369 bf_set(lpfc_sli4_sge_last, sgl, 0);
2370 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2371 bf_set(lpfc_sli4_sge_type, sgl,
2372 LPFC_SGE_TYPE_DATA);
2374 sgl->sge_len = cpu_to_le32(dma_len);
2375 dma_offset += dma_len;
2386 /* Move to the next s/g segment if possible */
2387 sgde = sg_next(sgde);
2395 if (protgroup_offset) {
2396 /* update the reference tag */
2397 reftag += protgrp_blks;
2402 if (curr_prot == protcnt) {
2403 /* mark the last SGL */
2405 bf_set(lpfc_sli4_sge_last, sgl, 1);
2407 } else if (curr_prot < protcnt) {
2408 /* advance to next prot buffer */
2409 sgpe = sg_next(sgpe);
2411 /* update the reference tag */
2412 reftag += protgrp_blks;
2414 /* if we're here, we have a bug */
2415 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2416 "9085 BLKGRD: bug in %s\n", __func__);
2427 * lpfc_prot_group_type - Get prtotection group type of SCSI command
2428 * @phba: The Hba for which this call is being executed.
2429 * @sc: pointer to scsi command we're working on
2431 * Given a SCSI command that supports DIF, determine composition of protection
2432 * groups involved in setting up buffer lists
2434 * Returns: Protection group type (with or without DIF)
2438 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
2440 int ret = LPFC_PG_TYPE_INVALID;
2441 unsigned char op = scsi_get_prot_op(sc);
2444 case SCSI_PROT_READ_STRIP:
2445 case SCSI_PROT_WRITE_INSERT:
2446 ret = LPFC_PG_TYPE_NO_DIF;
2448 case SCSI_PROT_READ_INSERT:
2449 case SCSI_PROT_WRITE_STRIP:
2450 case SCSI_PROT_READ_PASS:
2451 case SCSI_PROT_WRITE_PASS:
2452 ret = LPFC_PG_TYPE_DIF_BUF;
2456 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2457 "9021 Unsupported protection op:%d\n",
2465 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
2466 * @phba: The Hba for which this call is being executed.
2467 * @lpfc_cmd: The scsi buffer which is going to be adjusted.
2469 * Adjust the data length to account for how much data
2470 * is actually on the wire.
2472 * returns the adjusted data length
2475 lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
2476 struct lpfc_io_buf *lpfc_cmd)
2478 struct scsi_cmnd *sc = lpfc_cmd->pCmd;
2481 fcpdl = scsi_bufflen(sc);
2483 /* Check if there is protection data on the wire */
2484 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2485 /* Read check for protection data */
2486 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
2490 /* Write check for protection data */
2491 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
2496 * If we are in DIF Type 1 mode every data block has a 8 byte
2497 * DIF (trailer) attached to it. Must ajust FCP data length
2498 * to account for the protection data.
2500 fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
2506 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
2507 * @phba: The Hba for which this call is being executed.
2508 * @lpfc_cmd: The scsi buffer which is going to be prep'ed.
2510 * This is the protection/DIF aware version of
2511 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
2512 * two functions eventually, but for now, it's here.
2513 * RETURNS 0 - SUCCESS,
2514 * 1 - Failed DMA map, retry.
2515 * 2 - Invalid scsi cmd or prot-type. Do not rety.
2518 lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
2519 struct lpfc_io_buf *lpfc_cmd)
2521 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
2522 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
2523 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl;
2524 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
2525 uint32_t num_bde = 0;
2526 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
2527 int prot_group_type = 0;
2530 struct lpfc_vport *vport = phba->pport;
2533 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
2534 * fcp_rsp regions to the first data bde entry
2537 if (scsi_sg_count(scsi_cmnd)) {
2539 * The driver stores the segment count returned from pci_map_sg
2540 * because this a count of dma-mappings used to map the use_sg
2541 * pages. They are not guaranteed to be the same for those
2542 * architectures that implement an IOMMU.
2544 datasegcnt = dma_map_sg(&phba->pcidev->dev,
2545 scsi_sglist(scsi_cmnd),
2546 scsi_sg_count(scsi_cmnd), datadir);
2547 if (unlikely(!datasegcnt))
2550 lpfc_cmd->seg_cnt = datasegcnt;
2552 /* First check if data segment count from SCSI Layer is good */
2553 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
2554 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
2559 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
2561 switch (prot_group_type) {
2562 case LPFC_PG_TYPE_NO_DIF:
2564 /* Here we need to add a PDE5 and PDE6 to the count */
2565 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) {
2570 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
2572 /* we should have 2 or more entries in buffer list */
2579 case LPFC_PG_TYPE_DIF_BUF:
2581 * This type indicates that protection buffers are
2582 * passed to the driver, so that needs to be prepared
2585 protsegcnt = dma_map_sg(&phba->pcidev->dev,
2586 scsi_prot_sglist(scsi_cmnd),
2587 scsi_prot_sg_count(scsi_cmnd), datadir);
2588 if (unlikely(!protsegcnt)) {
2589 scsi_dma_unmap(scsi_cmnd);
2593 lpfc_cmd->prot_seg_cnt = protsegcnt;
2596 * There is a minimun of 4 BPLs used for every
2597 * protection data segment.
2599 if ((lpfc_cmd->prot_seg_cnt * 4) >
2600 (phba->cfg_total_seg_cnt - 2)) {
2605 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
2606 datasegcnt, protsegcnt);
2607 /* we should have 3 or more entries in buffer list */
2608 if ((num_bde < 3) ||
2609 (num_bde > phba->cfg_total_seg_cnt)) {
2615 case LPFC_PG_TYPE_INVALID:
2617 scsi_dma_unmap(scsi_cmnd);
2618 lpfc_cmd->seg_cnt = 0;
2620 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2621 "9022 Unexpected protection group %i\n",
2628 * Finish initializing those IOCB fields that are dependent on the
2629 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
2630 * reinitialized since all iocb memory resources are used many times
2631 * for transmit, receive, and continuation bpl's.
2633 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
2634 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
2635 iocb_cmd->ulpBdeCount = 1;
2636 iocb_cmd->ulpLe = 1;
2638 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
2639 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
2642 * Due to difference in data length between DIF/non-DIF paths,
2643 * we need to set word 4 of IOCB here
2645 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
2648 * For First burst, we may need to adjust the initial transfer
2651 if (iocb_cmd->un.fcpi.fcpi_XRdy &&
2652 (fcpdl < vport->cfg_first_burst_size))
2653 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
2657 if (lpfc_cmd->seg_cnt)
2658 scsi_dma_unmap(scsi_cmnd);
2659 if (lpfc_cmd->prot_seg_cnt)
2660 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
2661 scsi_prot_sg_count(scsi_cmnd),
2662 scsi_cmnd->sc_data_direction);
2664 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2665 "9023 Cannot setup S/G List for HBA"
2666 "IO segs %d/%d BPL %d SCSI %d: %d %d\n",
2667 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
2668 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
2669 prot_group_type, num_bde);
2671 lpfc_cmd->seg_cnt = 0;
2672 lpfc_cmd->prot_seg_cnt = 0;
2677 * This function calcuates the T10 DIF guard tag
2678 * on the specified data using a CRC algorithmn
2682 lpfc_bg_crc(uint8_t *data, int count)
2687 crc = crc_t10dif(data, count);
2688 x = cpu_to_be16(crc);
2693 * This function calcuates the T10 DIF guard tag
2694 * on the specified data using a CSUM algorithmn
2695 * using ip_compute_csum.
2698 lpfc_bg_csum(uint8_t *data, int count)
2702 ret = ip_compute_csum(data, count);
2707 * This function examines the protection data to try to determine
2708 * what type of T10-DIF error occurred.
2711 lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
2713 struct scatterlist *sgpe; /* s/g prot entry */
2714 struct scatterlist *sgde; /* s/g data entry */
2715 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
2716 struct scsi_dif_tuple *src = NULL;
2717 uint8_t *data_src = NULL;
2719 uint16_t start_app_tag, app_tag;
2720 uint32_t start_ref_tag, ref_tag;
2721 int prot, protsegcnt;
2722 int err_type, len, data_len;
2723 int chk_ref, chk_app, chk_guard;
2727 err_type = BGS_GUARD_ERR_MASK;
2731 /* First check to see if there is protection data to examine */
2732 prot = scsi_get_prot_op(cmd);
2733 if ((prot == SCSI_PROT_READ_STRIP) ||
2734 (prot == SCSI_PROT_WRITE_INSERT) ||
2735 (prot == SCSI_PROT_NORMAL))
2738 /* Currently the driver just supports ref_tag and guard_tag checking */
2743 /* Setup a ptr to the protection data provided by the SCSI host */
2744 sgpe = scsi_prot_sglist(cmd);
2745 protsegcnt = lpfc_cmd->prot_seg_cnt;
2747 if (sgpe && protsegcnt) {
2750 * We will only try to verify guard tag if the segment
2751 * data length is a multiple of the blksize.
2753 sgde = scsi_sglist(cmd);
2754 blksize = lpfc_cmd_blksize(cmd);
2755 data_src = (uint8_t *)sg_virt(sgde);
2756 data_len = sgde->length;
2757 if ((data_len & (blksize - 1)) == 0)
2760 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
2761 start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */
2762 start_app_tag = src->app_tag;
2764 while (src && protsegcnt) {
2768 * First check to see if a protection data
2771 if ((src->ref_tag == T10_PI_REF_ESCAPE) ||
2772 (src->app_tag == T10_PI_APP_ESCAPE)) {
2777 /* First Guard Tag checking */
2779 guard_tag = src->guard_tag;
2780 if (lpfc_cmd_guard_csum(cmd))
2781 sum = lpfc_bg_csum(data_src,
2784 sum = lpfc_bg_crc(data_src,
2786 if ((guard_tag != sum)) {
2787 err_type = BGS_GUARD_ERR_MASK;
2792 /* Reference Tag checking */
2793 ref_tag = be32_to_cpu(src->ref_tag);
2794 if (chk_ref && (ref_tag != start_ref_tag)) {
2795 err_type = BGS_REFTAG_ERR_MASK;
2800 /* App Tag checking */
2801 app_tag = src->app_tag;
2802 if (chk_app && (app_tag != start_app_tag)) {
2803 err_type = BGS_APPTAG_ERR_MASK;
2807 len -= sizeof(struct scsi_dif_tuple);
2812 data_src += blksize;
2813 data_len -= blksize;
2816 * Are we at the end of the Data segment?
2817 * The data segment is only used for Guard
2820 if (chk_guard && (data_len == 0)) {
2822 sgde = sg_next(sgde);
2826 data_src = (uint8_t *)sg_virt(sgde);
2827 data_len = sgde->length;
2828 if ((data_len & (blksize - 1)) == 0)
2833 /* Goto the next Protection data segment */
2834 sgpe = sg_next(sgpe);
2836 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
2845 if (err_type == BGS_GUARD_ERR_MASK) {
2846 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2848 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
2849 SAM_STAT_CHECK_CONDITION;
2850 phba->bg_guard_err_cnt++;
2851 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2852 "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n",
2853 (unsigned long)scsi_get_lba(cmd),
2856 } else if (err_type == BGS_REFTAG_ERR_MASK) {
2857 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2859 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
2860 SAM_STAT_CHECK_CONDITION;
2862 phba->bg_reftag_err_cnt++;
2863 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2864 "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n",
2865 (unsigned long)scsi_get_lba(cmd),
2866 ref_tag, start_ref_tag);
2868 } else if (err_type == BGS_APPTAG_ERR_MASK) {
2869 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2871 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
2872 SAM_STAT_CHECK_CONDITION;
2874 phba->bg_apptag_err_cnt++;
2875 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2876 "9041 BLKGRD: LBA %lx app_tag error %x != %x\n",
2877 (unsigned long)scsi_get_lba(cmd),
2878 app_tag, start_app_tag);
2884 * This function checks for BlockGuard errors detected by
2885 * the HBA. In case of errors, the ASC/ASCQ fields in the
2886 * sense buffer will be set accordingly, paired with
2887 * ILLEGAL_REQUEST to signal to the kernel that the HBA
2888 * detected corruption.
2891 * 0 - No error found
2892 * 1 - BlockGuard error found
2893 * -1 - Internal error (bad profile, ...etc)
2896 lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
2897 struct lpfc_iocbq *pIocbOut)
2899 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
2900 struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
2902 uint32_t bghm = bgf->bghm;
2903 uint32_t bgstat = bgf->bgstat;
2904 uint64_t failing_sector = 0;
2906 if (lpfc_bgs_get_invalid_prof(bgstat)) {
2907 cmd->result = DID_ERROR << 16;
2908 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2909 "9072 BLKGRD: Invalid BG Profile in cmd"
2910 " 0x%x lba 0x%llx blk cnt 0x%x "
2911 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
2912 (unsigned long long)scsi_get_lba(cmd),
2913 blk_rq_sectors(cmd->request), bgstat, bghm);
2918 if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
2919 cmd->result = DID_ERROR << 16;
2920 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2921 "9073 BLKGRD: Invalid BG PDIF Block in cmd"
2922 " 0x%x lba 0x%llx blk cnt 0x%x "
2923 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
2924 (unsigned long long)scsi_get_lba(cmd),
2925 blk_rq_sectors(cmd->request), bgstat, bghm);
2930 if (lpfc_bgs_get_guard_err(bgstat)) {
2933 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2935 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
2936 SAM_STAT_CHECK_CONDITION;
2937 phba->bg_guard_err_cnt++;
2938 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2939 "9055 BLKGRD: Guard Tag error in cmd"
2940 " 0x%x lba 0x%llx blk cnt 0x%x "
2941 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
2942 (unsigned long long)scsi_get_lba(cmd),
2943 blk_rq_sectors(cmd->request), bgstat, bghm);
2946 if (lpfc_bgs_get_reftag_err(bgstat)) {
2949 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2951 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
2952 SAM_STAT_CHECK_CONDITION;
2954 phba->bg_reftag_err_cnt++;
2955 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2956 "9056 BLKGRD: Ref Tag error in cmd"
2957 " 0x%x lba 0x%llx blk cnt 0x%x "
2958 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
2959 (unsigned long long)scsi_get_lba(cmd),
2960 blk_rq_sectors(cmd->request), bgstat, bghm);
2963 if (lpfc_bgs_get_apptag_err(bgstat)) {
2966 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2968 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
2969 SAM_STAT_CHECK_CONDITION;
2971 phba->bg_apptag_err_cnt++;
2972 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
2973 "9061 BLKGRD: App Tag error in cmd"
2974 " 0x%x lba 0x%llx blk cnt 0x%x "
2975 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
2976 (unsigned long long)scsi_get_lba(cmd),
2977 blk_rq_sectors(cmd->request), bgstat, bghm);
2980 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
2982 * setup sense data descriptor 0 per SPC-4 as an information
2983 * field, and put the failing LBA in it.
2984 * This code assumes there was also a guard/app/ref tag error
2987 cmd->sense_buffer[7] = 0xc; /* Additional sense length */
2988 cmd->sense_buffer[8] = 0; /* Information descriptor type */
2989 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
2990 cmd->sense_buffer[10] = 0x80; /* Validity bit */
2992 /* bghm is a "on the wire" FC frame based count */
2993 switch (scsi_get_prot_op(cmd)) {
2994 case SCSI_PROT_READ_INSERT:
2995 case SCSI_PROT_WRITE_STRIP:
2996 bghm /= cmd->device->sector_size;
2998 case SCSI_PROT_READ_STRIP:
2999 case SCSI_PROT_WRITE_INSERT:
3000 case SCSI_PROT_READ_PASS:
3001 case SCSI_PROT_WRITE_PASS:
3002 bghm /= (cmd->device->sector_size +
3003 sizeof(struct scsi_dif_tuple));
3007 failing_sector = scsi_get_lba(cmd);
3008 failing_sector += bghm;
3010 /* Descriptor Information */
3011 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
3015 /* No error was reported - problem in FW? */
3016 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3017 "9057 BLKGRD: Unknown error in cmd"
3018 " 0x%x lba 0x%llx blk cnt 0x%x "
3019 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3020 (unsigned long long)scsi_get_lba(cmd),
3021 blk_rq_sectors(cmd->request), bgstat, bghm);
3023 /* Calcuate what type of error it was */
3024 lpfc_calc_bg_err(phba, lpfc_cmd);
3031 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3032 * @phba: The Hba for which this call is being executed.
3033 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3035 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3036 * field of @lpfc_cmd for device with SLI-4 interface spec.
3039 * 2 - Error - Do not retry
3044 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
3046 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3047 struct scatterlist *sgel = NULL;
3048 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3049 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
3050 struct sli4_sge *first_data_sgl;
3051 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3052 dma_addr_t physaddr;
3053 uint32_t num_bde = 0;
3055 uint32_t dma_offset = 0;
3057 struct ulp_bde64 *bde;
3058 bool lsp_just_set = false;
3059 struct sli4_hybrid_sgl *sgl_xtra = NULL;
3062 * There are three possibilities here - use scatter-gather segment, use
3063 * the single mapping, or neither. Start the lpfc command prep by
3064 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
3067 if (scsi_sg_count(scsi_cmnd)) {
3069 * The driver stores the segment count returned from pci_map_sg
3070 * because this a count of dma-mappings used to map the use_sg
3071 * pages. They are not guaranteed to be the same for those
3072 * architectures that implement an IOMMU.
3075 nseg = scsi_dma_map(scsi_cmnd);
3076 if (unlikely(nseg <= 0))
3079 /* clear the last flag in the fcp_rsp map entry */
3080 sgl->word2 = le32_to_cpu(sgl->word2);
3081 bf_set(lpfc_sli4_sge_last, sgl, 0);
3082 sgl->word2 = cpu_to_le32(sgl->word2);
3084 first_data_sgl = sgl;
3085 lpfc_cmd->seg_cnt = nseg;
3086 if (!phba->cfg_xpsgl &&
3087 lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
3088 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
3089 " %s: Too many sg segments from "
3090 "dma_map_sg. Config %d, seg_cnt %d\n",
3091 __func__, phba->cfg_sg_seg_cnt,
3093 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
3094 lpfc_cmd->seg_cnt = 0;
3095 scsi_dma_unmap(scsi_cmnd);
3100 * The driver established a maximum scatter-gather segment count
3101 * during probe that limits the number of sg elements in any
3102 * single scsi command. Just run through the seg_cnt and format
3104 * When using SLI-3 the driver will try to fit all the BDEs into
3105 * the IOCB. If it can't then the BDEs get added to a BPL as it
3106 * does for SLI-2 mode.
3109 /* for tracking segment boundaries */
3110 sgel = scsi_sglist(scsi_cmnd);
3112 for (i = 0; i < nseg; i++) {
3114 if ((num_bde + 1) == nseg) {
3115 bf_set(lpfc_sli4_sge_last, sgl, 1);
3116 bf_set(lpfc_sli4_sge_type, sgl,
3117 LPFC_SGE_TYPE_DATA);
3119 bf_set(lpfc_sli4_sge_last, sgl, 0);
3121 /* do we need to expand the segment */
3122 if (!lsp_just_set &&
3123 !((j + 1) % phba->border_sge_num) &&
3124 ((nseg - 1) != i)) {
3126 bf_set(lpfc_sli4_sge_type, sgl,
3129 sgl_xtra = lpfc_get_sgl_per_hdwq(
3132 if (unlikely(!sgl_xtra)) {
3133 lpfc_cmd->seg_cnt = 0;
3134 scsi_dma_unmap(scsi_cmnd);
3137 sgl->addr_lo = cpu_to_le32(putPaddrLow(
3138 sgl_xtra->dma_phys_sgl));
3139 sgl->addr_hi = cpu_to_le32(putPaddrHigh(
3140 sgl_xtra->dma_phys_sgl));
3143 bf_set(lpfc_sli4_sge_type, sgl,
3144 LPFC_SGE_TYPE_DATA);
3148 if (!(bf_get(lpfc_sli4_sge_type, sgl) &
3149 LPFC_SGE_TYPE_LSP)) {
3150 if ((nseg - 1) == i)
3151 bf_set(lpfc_sli4_sge_last, sgl, 1);
3153 physaddr = sg_dma_address(sgel);
3154 dma_len = sg_dma_len(sgel);
3155 sgl->addr_lo = cpu_to_le32(putPaddrLow(
3157 sgl->addr_hi = cpu_to_le32(putPaddrHigh(
3160 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
3161 sgl->word2 = cpu_to_le32(sgl->word2);
3162 sgl->sge_len = cpu_to_le32(dma_len);
3164 dma_offset += dma_len;
3165 sgel = sg_next(sgel);
3168 lsp_just_set = false;
3171 sgl->word2 = cpu_to_le32(sgl->word2);
3172 sgl->sge_len = cpu_to_le32(
3173 phba->cfg_sg_dma_buf_size);
3175 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
3178 lsp_just_set = true;
3184 * Setup the first Payload BDE. For FCoE we just key off
3185 * Performance Hints, for FC we use lpfc_enable_pbde.
3186 * We populate words 13-15 of IOCB/WQE.
3188 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
3189 phba->cfg_enable_pbde) {
3190 bde = (struct ulp_bde64 *)
3191 &(iocb_cmd->unsli3.sli3Words[5]);
3192 bde->addrLow = first_data_sgl->addr_lo;
3193 bde->addrHigh = first_data_sgl->addr_hi;
3194 bde->tus.f.bdeSize =
3195 le32_to_cpu(first_data_sgl->sge_len);
3196 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3197 bde->tus.w = cpu_to_le32(bde->tus.w);
3201 /* clear the last flag in the fcp_rsp map entry */
3202 sgl->word2 = le32_to_cpu(sgl->word2);
3203 bf_set(lpfc_sli4_sge_last, sgl, 1);
3204 sgl->word2 = cpu_to_le32(sgl->word2);
3206 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
3207 phba->cfg_enable_pbde) {
3208 bde = (struct ulp_bde64 *)
3209 &(iocb_cmd->unsli3.sli3Words[5]);
3210 memset(bde, 0, (sizeof(uint32_t) * 3));
3215 * Finish initializing those IOCB fields that are dependent on the
3216 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
3217 * explicitly reinitialized.
3218 * all iocb memory resources are reused.
3220 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
3223 * Due to difference in data length between DIF/non-DIF paths,
3224 * we need to set word 4 of IOCB here
3226 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
3229 * If the OAS driver feature is enabled and the lun is enabled for
3230 * OAS, set the oas iocb related flags.
3232 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
3233 scsi_cmnd->device->hostdata)->oas_enabled) {
3234 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
3235 lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *)
3236 scsi_cmnd->device->hostdata)->priority;
3243 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3244 * @phba: The Hba for which this call is being executed.
3245 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3247 * This is the protection/DIF aware version of
3248 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
3249 * two functions eventually, but for now, it's here
3251 * 2 - Error - Do not retry
3256 lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
3257 struct lpfc_io_buf *lpfc_cmd)
3259 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3260 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3261 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl);
3262 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3263 uint32_t num_sge = 0;
3264 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
3265 int prot_group_type = 0;
3268 struct lpfc_vport *vport = phba->pport;
3271 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
3272 * fcp_rsp regions to the first data sge entry
3274 if (scsi_sg_count(scsi_cmnd)) {
3276 * The driver stores the segment count returned from pci_map_sg
3277 * because this a count of dma-mappings used to map the use_sg
3278 * pages. They are not guaranteed to be the same for those
3279 * architectures that implement an IOMMU.
3281 datasegcnt = dma_map_sg(&phba->pcidev->dev,
3282 scsi_sglist(scsi_cmnd),
3283 scsi_sg_count(scsi_cmnd), datadir);
3284 if (unlikely(!datasegcnt))
3288 /* clear the last flag in the fcp_rsp map entry */
3289 sgl->word2 = le32_to_cpu(sgl->word2);
3290 bf_set(lpfc_sli4_sge_last, sgl, 0);
3291 sgl->word2 = cpu_to_le32(sgl->word2);
3294 lpfc_cmd->seg_cnt = datasegcnt;
3296 /* First check if data segment count from SCSI Layer is good */
3297 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt &&
3299 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
3304 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
3306 switch (prot_group_type) {
3307 case LPFC_PG_TYPE_NO_DIF:
3308 /* Here we need to add a DISEED to the count */
3309 if (((lpfc_cmd->seg_cnt + 1) >
3310 phba->cfg_total_seg_cnt) &&
3316 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
3317 datasegcnt, lpfc_cmd);
3319 /* we should have 2 or more entries in buffer list */
3326 case LPFC_PG_TYPE_DIF_BUF:
3328 * This type indicates that protection buffers are
3329 * passed to the driver, so that needs to be prepared
3332 protsegcnt = dma_map_sg(&phba->pcidev->dev,
3333 scsi_prot_sglist(scsi_cmnd),
3334 scsi_prot_sg_count(scsi_cmnd), datadir);
3335 if (unlikely(!protsegcnt)) {
3336 scsi_dma_unmap(scsi_cmnd);
3340 lpfc_cmd->prot_seg_cnt = protsegcnt;
3342 * There is a minimun of 3 SGEs used for every
3343 * protection data segment.
3345 if (((lpfc_cmd->prot_seg_cnt * 3) >
3346 (phba->cfg_total_seg_cnt - 2)) &&
3352 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
3353 datasegcnt, protsegcnt, lpfc_cmd);
3355 /* we should have 3 or more entries in buffer list */
3357 (num_sge > phba->cfg_total_seg_cnt &&
3358 !phba->cfg_xpsgl)) {
3364 case LPFC_PG_TYPE_INVALID:
3366 scsi_dma_unmap(scsi_cmnd);
3367 lpfc_cmd->seg_cnt = 0;
3369 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3370 "9083 Unexpected protection group %i\n",
3376 switch (scsi_get_prot_op(scsi_cmnd)) {
3377 case SCSI_PROT_WRITE_STRIP:
3378 case SCSI_PROT_READ_STRIP:
3379 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
3381 case SCSI_PROT_WRITE_INSERT:
3382 case SCSI_PROT_READ_INSERT:
3383 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
3385 case SCSI_PROT_WRITE_PASS:
3386 case SCSI_PROT_READ_PASS:
3387 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
3391 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
3392 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
3395 * Due to difference in data length between DIF/non-DIF paths,
3396 * we need to set word 4 of IOCB here
3398 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
3401 * For First burst, we may need to adjust the initial transfer
3404 if (iocb_cmd->un.fcpi.fcpi_XRdy &&
3405 (fcpdl < vport->cfg_first_burst_size))
3406 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
3409 * If the OAS driver feature is enabled and the lun is enabled for
3410 * OAS, set the oas iocb related flags.
3412 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
3413 scsi_cmnd->device->hostdata)->oas_enabled)
3414 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
3418 if (lpfc_cmd->seg_cnt)
3419 scsi_dma_unmap(scsi_cmnd);
3420 if (lpfc_cmd->prot_seg_cnt)
3421 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
3422 scsi_prot_sg_count(scsi_cmnd),
3423 scsi_cmnd->sc_data_direction);
3425 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3426 "9084 Cannot setup S/G List for HBA"
3427 "IO segs %d/%d SGL %d SCSI %d: %d %d\n",
3428 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
3429 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
3430 prot_group_type, num_sge);
3432 lpfc_cmd->seg_cnt = 0;
3433 lpfc_cmd->prot_seg_cnt = 0;
3438 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3439 * @phba: The Hba for which this call is being executed.
3440 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3442 * This routine wraps the actual DMA mapping function pointer from the
3450 lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
3452 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
3456 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3458 * @phba: The Hba for which this call is being executed.
3459 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3461 * This routine wraps the actual DMA mapping function pointer from the
3469 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
3471 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
3475 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
3476 * @phba: Pointer to hba context object.
3477 * @vport: Pointer to vport object.
3478 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
3479 * @rsp_iocb: Pointer to response iocb object which reported error.
3481 * This function posts an event when there is a SCSI command reporting
3482 * error from the scsi device.
3485 lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
3486 struct lpfc_io_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
3487 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3488 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3489 uint32_t resp_info = fcprsp->rspStatus2;
3490 uint32_t scsi_status = fcprsp->rspStatus3;
3491 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3492 struct lpfc_fast_path_event *fast_path_evt = NULL;
3493 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
3494 unsigned long flags;
3496 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
3499 /* If there is queuefull or busy condition send a scsi event */
3500 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
3501 (cmnd->result == SAM_STAT_BUSY)) {
3502 fast_path_evt = lpfc_alloc_fast_evt(phba);
3505 fast_path_evt->un.scsi_evt.event_type =
3507 fast_path_evt->un.scsi_evt.subcategory =
3508 (cmnd->result == SAM_STAT_TASK_SET_FULL) ?
3509 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
3510 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
3511 memcpy(&fast_path_evt->un.scsi_evt.wwpn,
3512 &pnode->nlp_portname, sizeof(struct lpfc_name));
3513 memcpy(&fast_path_evt->un.scsi_evt.wwnn,
3514 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3515 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
3516 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
3517 fast_path_evt = lpfc_alloc_fast_evt(phba);
3520 fast_path_evt->un.check_cond_evt.scsi_event.event_type =
3522 fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
3523 LPFC_EVENT_CHECK_COND;
3524 fast_path_evt->un.check_cond_evt.scsi_event.lun =
3526 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
3527 &pnode->nlp_portname, sizeof(struct lpfc_name));
3528 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
3529 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3530 fast_path_evt->un.check_cond_evt.sense_key =
3531 cmnd->sense_buffer[2] & 0xf;
3532 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
3533 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
3534 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3536 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
3537 ((scsi_status == SAM_STAT_GOOD) &&
3538 !(resp_info & (RESID_UNDER | RESID_OVER))))) {
3540 * If status is good or resid does not match with fcp_param and
3541 * there is valid fcpi_parm, then there is a read_check error
3543 fast_path_evt = lpfc_alloc_fast_evt(phba);
3546 fast_path_evt->un.read_check_error.header.event_type =
3547 FC_REG_FABRIC_EVENT;
3548 fast_path_evt->un.read_check_error.header.subcategory =
3549 LPFC_EVENT_FCPRDCHKERR;
3550 memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
3551 &pnode->nlp_portname, sizeof(struct lpfc_name));
3552 memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
3553 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3554 fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
3555 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
3556 fast_path_evt->un.read_check_error.fcpiparam =
3561 fast_path_evt->vport = vport;
3562 spin_lock_irqsave(&phba->hbalock, flags);
3563 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
3564 spin_unlock_irqrestore(&phba->hbalock, flags);
3565 lpfc_worker_wake_up(phba);
3570 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
3571 * @phba: The HBA for which this call is being executed.
3572 * @psb: The scsi buffer which is going to be un-mapped.
3574 * This routine does DMA un-mapping of scatter gather list of scsi command
3575 * field of @lpfc_cmd for device with SLI-3 interface spec.
3578 lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
3581 * There are only two special cases to consider. (1) the scsi command
3582 * requested scatter-gather usage or (2) the scsi command allocated
3583 * a request buffer, but did not request use_sg. There is a third
3584 * case, but it does not require resource deallocation.
3586 if (psb->seg_cnt > 0)
3587 scsi_dma_unmap(psb->pCmd);
3588 if (psb->prot_seg_cnt > 0)
3589 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
3590 scsi_prot_sg_count(psb->pCmd),
3591 psb->pCmd->sc_data_direction);
3595 * lpfc_handler_fcp_err - FCP response handler
3596 * @vport: The virtual port for which this call is being executed.
3597 * @lpfc_cmd: Pointer to lpfc_io_buf data structure.
3598 * @rsp_iocb: The response IOCB which contains FCP error.
3600 * This routine is called to process response IOCB with status field
3601 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
3602 * based upon SCSI and FCP error.
3605 lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
3606 struct lpfc_iocbq *rsp_iocb)
3608 struct lpfc_hba *phba = vport->phba;
3609 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3610 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
3611 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3612 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3613 uint32_t resp_info = fcprsp->rspStatus2;
3614 uint32_t scsi_status = fcprsp->rspStatus3;
3616 uint32_t host_status = DID_OK;
3617 uint32_t rsplen = 0;
3619 uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
3623 * If this is a task management command, there is no
3624 * scsi packet associated with this lpfc_cmd. The driver
3627 if (fcpcmd->fcpCntl2) {
3632 if (resp_info & RSP_LEN_VALID) {
3633 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3634 if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
3635 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3636 "2719 Invalid response length: "
3637 "tgt x%x lun x%llx cmnd x%x rsplen x%x\n",
3639 cmnd->device->lun, cmnd->cmnd[0],
3641 host_status = DID_ERROR;
3644 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
3645 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3646 "2757 Protocol failure detected during "
3647 "processing of FCP I/O op: "
3648 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n",
3650 cmnd->device->lun, cmnd->cmnd[0],
3652 host_status = DID_ERROR;
3657 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
3658 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
3659 if (snslen > SCSI_SENSE_BUFFERSIZE)
3660 snslen = SCSI_SENSE_BUFFERSIZE;
3662 if (resp_info & RSP_LEN_VALID)
3663 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3664 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
3666 lp = (uint32_t *)cmnd->sense_buffer;
3668 /* special handling for under run conditions */
3669 if (!scsi_status && (resp_info & RESID_UNDER)) {
3670 /* don't log under runs if fcp set... */
3671 if (vport->cfg_log_verbose & LOG_FCP)
3672 logit = LOG_FCP_ERROR;
3673 /* unless operator says so */
3674 if (vport->cfg_log_verbose & LOG_FCP_UNDER)
3675 logit = LOG_FCP_UNDER;
3678 lpfc_printf_vlog(vport, KERN_WARNING, logit,
3679 "9024 FCP command x%x failed: x%x SNS x%x x%x "
3680 "Data: x%x x%x x%x x%x x%x\n",
3681 cmnd->cmnd[0], scsi_status,
3682 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
3683 be32_to_cpu(fcprsp->rspResId),
3684 be32_to_cpu(fcprsp->rspSnsLen),
3685 be32_to_cpu(fcprsp->rspRspLen),
3688 scsi_set_resid(cmnd, 0);
3689 fcpDl = be32_to_cpu(fcpcmd->fcpDl);
3690 if (resp_info & RESID_UNDER) {
3691 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
3693 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
3694 "9025 FCP Underrun, expected %d, "
3695 "residual %d Data: x%x x%x x%x\n",
3697 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
3701 * If there is an under run, check if under run reported by
3702 * storage array is same as the under run reported by HBA.
3703 * If this is not same, there is a dropped frame.
3705 if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) {
3706 lpfc_printf_vlog(vport, KERN_WARNING,
3707 LOG_FCP | LOG_FCP_ERROR,
3708 "9026 FCP Read Check Error "
3709 "and Underrun Data: x%x x%x x%x x%x\n",
3711 scsi_get_resid(cmnd), fcpi_parm,
3713 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
3714 host_status = DID_ERROR;
3717 * The cmnd->underflow is the minimum number of bytes that must
3718 * be transferred for this command. Provided a sense condition
3719 * is not present, make sure the actual amount transferred is at
3720 * least the underflow value or fail.
3722 if (!(resp_info & SNS_LEN_VALID) &&
3723 (scsi_status == SAM_STAT_GOOD) &&
3724 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
3725 < cmnd->underflow)) {
3726 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
3727 "9027 FCP command x%x residual "
3728 "underrun converted to error "
3729 "Data: x%x x%x x%x\n",
3730 cmnd->cmnd[0], scsi_bufflen(cmnd),
3731 scsi_get_resid(cmnd), cmnd->underflow);
3732 host_status = DID_ERROR;
3734 } else if (resp_info & RESID_OVER) {
3735 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
3736 "9028 FCP command x%x residual overrun error. "
3737 "Data: x%x x%x\n", cmnd->cmnd[0],
3738 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
3739 host_status = DID_ERROR;
3742 * Check SLI validation that all the transfer was actually done
3743 * (fcpi_parm should be zero). Apply check only to reads.
3745 } else if (fcpi_parm) {
3746 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
3747 "9029 FCP %s Check Error xri x%x Data: "
3748 "x%x x%x x%x x%x x%x\n",
3749 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ?
3751 ((phba->sli_rev == LPFC_SLI_REV4) ?
3752 lpfc_cmd->cur_iocbq.sli4_xritag :
3753 rsp_iocb->iocb.ulpContext),
3754 fcpDl, be32_to_cpu(fcprsp->rspResId),
3755 fcpi_parm, cmnd->cmnd[0], scsi_status);
3757 /* There is some issue with the LPe12000 that causes it
3758 * to miscalculate the fcpi_parm and falsely trip this
3759 * recovery logic. Detect this case and don't error when true.
3761 if (fcpi_parm > fcpDl)
3764 switch (scsi_status) {
3766 case SAM_STAT_CHECK_CONDITION:
3767 /* Fabric dropped a data frame. Fail any successful
3768 * command in which we detected dropped frames.
3769 * A status of good or some check conditions could
3770 * be considered a successful command.
3772 host_status = DID_ERROR;
3775 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
3779 cmnd->result = host_status << 16 | scsi_status;
3780 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
3784 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
3785 * @phba: The Hba for which this call is being executed.
3786 * @pIocbIn: The command IOCBQ for the scsi cmnd.
3787 * @pIocbOut: The response IOCBQ for the scsi cmnd.
3789 * This routine assigns scsi command result by looking into response IOCB
3790 * status field appropriately. This routine handles QUEUE FULL condition as
3791 * well by ramping down device queue depth.
3794 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
3795 struct lpfc_iocbq *pIocbOut)
3797 struct lpfc_io_buf *lpfc_cmd =
3798 (struct lpfc_io_buf *) pIocbIn->context1;
3799 struct lpfc_vport *vport = pIocbIn->vport;
3800 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
3801 struct lpfc_nodelist *pnode = rdata->pnode;
3802 struct scsi_cmnd *cmd;
3803 unsigned long flags;
3804 struct lpfc_fast_path_event *fast_path_evt;
3805 struct Scsi_Host *shost;
3807 uint32_t logit = LOG_FCP;
3808 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3812 /* Guard against abort handler being called at same time */
3813 spin_lock(&lpfc_cmd->buf_lock);
3815 /* Sanity check on return of outstanding command */
3816 cmd = lpfc_cmd->pCmd;
3817 if (!cmd || !phba) {
3818 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3819 "2621 IO completion: Not an active IO\n");
3820 spin_unlock(&lpfc_cmd->buf_lock);
3824 idx = lpfc_cmd->cur_iocbq.hba_wqidx;
3825 if (phba->sli4_hba.hdwq)
3826 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++;
3828 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3829 if (unlikely(phba->cpucheck_on & LPFC_CHECK_SCSI_IO)) {
3830 cpu = raw_smp_processor_id();
3831 if (cpu < LPFC_CHECK_CPU_CNT && phba->sli4_hba.hdwq)
3832 phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++;
3835 shost = cmd->device->host;
3837 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
3838 lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
3839 /* pick up SLI4 exhange busy status from HBA */
3840 if (pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY)
3841 lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
3843 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
3845 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3846 if (lpfc_cmd->prot_data_type) {
3847 struct scsi_dif_tuple *src = NULL;
3849 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
3851 * Used to restore any changes to protection
3852 * data for error injection.
3854 switch (lpfc_cmd->prot_data_type) {
3855 case LPFC_INJERR_REFTAG:
3857 lpfc_cmd->prot_data;
3859 case LPFC_INJERR_APPTAG:
3861 (uint16_t)lpfc_cmd->prot_data;
3863 case LPFC_INJERR_GUARD:
3865 (uint16_t)lpfc_cmd->prot_data;
3871 lpfc_cmd->prot_data = 0;
3872 lpfc_cmd->prot_data_type = 0;
3873 lpfc_cmd->prot_data_segment = NULL;
3877 if (unlikely(lpfc_cmd->status)) {
3878 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
3879 (lpfc_cmd->result & IOERR_DRVR_MASK))
3880 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
3881 else if (lpfc_cmd->status >= IOSTAT_CNT)
3882 lpfc_cmd->status = IOSTAT_DEFAULT;
3883 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
3884 !lpfc_cmd->fcp_rsp->rspStatus3 &&
3885 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
3886 !(vport->cfg_log_verbose & LOG_FCP_UNDER))
3889 logit = LOG_FCP | LOG_FCP_UNDER;
3890 lpfc_printf_vlog(vport, KERN_WARNING, logit,
3891 "9030 FCP cmd x%x failed <%d/%lld> "
3892 "status: x%x result: x%x "
3893 "sid: x%x did: x%x oxid: x%x "
3896 cmd->device ? cmd->device->id : 0xffff,
3897 cmd->device ? cmd->device->lun : 0xffff,
3898 lpfc_cmd->status, lpfc_cmd->result,
3900 (pnode) ? pnode->nlp_DID : 0,
3901 phba->sli_rev == LPFC_SLI_REV4 ?
3902 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
3903 pIocbOut->iocb.ulpContext,
3904 lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
3906 switch (lpfc_cmd->status) {
3907 case IOSTAT_FCP_RSP_ERROR:
3908 /* Call FCP RSP handler to determine result */
3909 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
3911 case IOSTAT_NPORT_BSY:
3912 case IOSTAT_FABRIC_BSY:
3913 cmd->result = DID_TRANSPORT_DISRUPTED << 16;
3914 fast_path_evt = lpfc_alloc_fast_evt(phba);
3917 fast_path_evt->un.fabric_evt.event_type =
3918 FC_REG_FABRIC_EVENT;
3919 fast_path_evt->un.fabric_evt.subcategory =
3920 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
3921 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
3922 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
3923 memcpy(&fast_path_evt->un.fabric_evt.wwpn,
3924 &pnode->nlp_portname,
3925 sizeof(struct lpfc_name));
3926 memcpy(&fast_path_evt->un.fabric_evt.wwnn,
3927 &pnode->nlp_nodename,
3928 sizeof(struct lpfc_name));
3930 fast_path_evt->vport = vport;
3931 fast_path_evt->work_evt.evt =
3932 LPFC_EVT_FASTPATH_MGMT_EVT;
3933 spin_lock_irqsave(&phba->hbalock, flags);
3934 list_add_tail(&fast_path_evt->work_evt.evt_listp,
3936 spin_unlock_irqrestore(&phba->hbalock, flags);
3937 lpfc_worker_wake_up(phba);
3939 case IOSTAT_LOCAL_REJECT:
3940 case IOSTAT_REMOTE_STOP:
3941 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
3943 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
3944 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
3946 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
3947 cmd->result = DID_NO_CONNECT << 16;
3950 if (lpfc_cmd->result == IOERR_INVALID_RPI ||
3951 lpfc_cmd->result == IOERR_NO_RESOURCES ||
3952 lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
3953 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
3954 cmd->result = DID_REQUEUE << 16;
3957 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
3958 lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
3959 pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
3960 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
3962 * This is a response for a BG enabled
3963 * cmd. Parse BG error
3965 lpfc_parse_bg_err(phba, lpfc_cmd,
3969 lpfc_printf_vlog(vport, KERN_WARNING,
3971 "9031 non-zero BGSTAT "
3972 "on unprotected cmd\n");
3975 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
3976 && (phba->sli_rev == LPFC_SLI_REV4)
3977 && (pnode && NLP_CHK_NODE_ACT(pnode))) {
3978 /* This IO was aborted by the target, we don't
3979 * know the rxid and because we did not send the
3980 * ABTS we cannot generate and RRQ.
3982 lpfc_set_rrq_active(phba, pnode,
3983 lpfc_cmd->cur_iocbq.sli4_lxritag,
3988 cmd->result = DID_ERROR << 16;
3992 if (!pnode || !NLP_CHK_NODE_ACT(pnode)
3993 || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
3994 cmd->result = DID_TRANSPORT_DISRUPTED << 16 |
3997 cmd->result = DID_OK << 16;
3999 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
4000 uint32_t *lp = (uint32_t *)cmd->sense_buffer;
4002 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4003 "0710 Iodone <%d/%llu> cmd x%px, error "
4004 "x%x SNS x%x x%x Data: x%x x%x\n",
4005 cmd->device->id, cmd->device->lun, cmd,
4006 cmd->result, *lp, *(lp + 3), cmd->retries,
4007 scsi_get_resid(cmd));
4010 lpfc_update_stats(vport, lpfc_cmd);
4011 if (vport->cfg_max_scsicmpl_time &&
4012 time_after(jiffies, lpfc_cmd->start_time +
4013 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
4014 spin_lock_irqsave(shost->host_lock, flags);
4015 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4016 if (pnode->cmd_qdepth >
4017 atomic_read(&pnode->cmd_pending) &&
4018 (atomic_read(&pnode->cmd_pending) >
4019 LPFC_MIN_TGT_QDEPTH) &&
4020 ((cmd->cmnd[0] == READ_10) ||
4021 (cmd->cmnd[0] == WRITE_10)))
4023 atomic_read(&pnode->cmd_pending);
4025 pnode->last_change_time = jiffies;
4027 spin_unlock_irqrestore(shost->host_lock, flags);
4029 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
4031 lpfc_cmd->pCmd = NULL;
4032 spin_unlock(&lpfc_cmd->buf_lock);
4034 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
4035 cmd->scsi_done(cmd);
4038 * If there is an abort thread waiting for command completion
4039 * wake up the thread.
4041 spin_lock(&lpfc_cmd->buf_lock);
4042 lpfc_cmd->cur_iocbq.iocb_flag &= ~LPFC_DRIVER_ABORTED;
4043 if (lpfc_cmd->waitq)
4044 wake_up(lpfc_cmd->waitq);
4045 spin_unlock(&lpfc_cmd->buf_lock);
4047 lpfc_release_scsi_buf(phba, lpfc_cmd);
4051 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
4052 * @data: A pointer to the immediate command data portion of the IOCB.
4053 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
4055 * The routine copies the entire FCP command from @fcp_cmnd to @data while
4056 * byte swapping the data to big endian format for transmission on the wire.
4059 lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
4062 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
4063 i += sizeof(uint32_t), j++) {
4064 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
4069 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
4070 * @vport: The virtual port for which this call is being executed.
4071 * @lpfc_cmd: The scsi command which needs to send.
4072 * @pnode: Pointer to lpfc_nodelist.
4074 * This routine initializes fcp_cmnd and iocb data structure from scsi command
4075 * to transfer for device with SLI3 interface spec.
4078 lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
4079 struct lpfc_nodelist *pnode)
4081 struct lpfc_hba *phba = vport->phba;
4082 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
4083 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
4084 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
4085 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
4086 struct lpfc_sli4_hdw_queue *hdwq = NULL;
4087 int datadir = scsi_cmnd->sc_data_direction;
4093 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
4096 lpfc_cmd->fcp_rsp->rspSnsLen = 0;
4097 /* clear task management bits */
4098 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
4100 int_to_scsilun(lpfc_cmd->pCmd->device->lun,
4101 &lpfc_cmd->fcp_cmnd->fcp_lun);
4103 ptr = &fcp_cmnd->fcpCdb[0];
4104 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
4105 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
4106 ptr += scsi_cmnd->cmd_len;
4107 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
4110 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
4112 sli4 = (phba->sli_rev == LPFC_SLI_REV4);
4113 piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
4114 idx = lpfc_cmd->hdwq_no;
4115 if (phba->sli4_hba.hdwq)
4116 hdwq = &phba->sli4_hba.hdwq[idx];
4119 * There are three possibilities here - use scatter-gather segment, use
4120 * the single mapping, or neither. Start the lpfc command prep by
4121 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
4124 if (scsi_sg_count(scsi_cmnd)) {
4125 if (datadir == DMA_TO_DEVICE) {
4126 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
4127 iocb_cmd->ulpPU = PARM_READ_CHECK;
4128 if (vport->cfg_first_burst_size &&
4129 (pnode->nlp_flag & NLP_FIRSTBURST)) {
4130 fcpdl = scsi_bufflen(scsi_cmnd);
4131 if (fcpdl < vport->cfg_first_burst_size)
4132 piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl;
4134 piocbq->iocb.un.fcpi.fcpi_XRdy =
4135 vport->cfg_first_burst_size;
4137 fcp_cmnd->fcpCntl3 = WRITE_DATA;
4139 hdwq->scsi_cstat.output_requests++;
4141 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
4142 iocb_cmd->ulpPU = PARM_READ_CHECK;
4143 fcp_cmnd->fcpCntl3 = READ_DATA;
4145 hdwq->scsi_cstat.input_requests++;
4148 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
4149 iocb_cmd->un.fcpi.fcpi_parm = 0;
4150 iocb_cmd->ulpPU = 0;
4151 fcp_cmnd->fcpCntl3 = 0;
4153 hdwq->scsi_cstat.control_requests++;
4155 if (phba->sli_rev == 3 &&
4156 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
4157 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
4159 * Finish initializing those IOCB fields that are independent
4160 * of the scsi_cmnd request_buffer
4162 piocbq->iocb.ulpContext = pnode->nlp_rpi;
4164 piocbq->iocb.ulpContext =
4165 phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
4166 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
4167 piocbq->iocb.ulpFCP2Rcvy = 1;
4169 piocbq->iocb.ulpFCP2Rcvy = 0;
4171 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
4172 piocbq->context1 = lpfc_cmd;
4173 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4174 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
4175 piocbq->vport = vport;
4179 * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit
4180 * @vport: The virtual port for which this call is being executed.
4181 * @lpfc_cmd: Pointer to lpfc_io_buf data structure.
4182 * @lun: Logical unit number.
4183 * @task_mgmt_cmd: SCSI task management command.
4185 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
4186 * for device with SLI-3 interface spec.
4193 lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
4194 struct lpfc_io_buf *lpfc_cmd,
4196 uint8_t task_mgmt_cmd)
4198 struct lpfc_iocbq *piocbq;
4200 struct fcp_cmnd *fcp_cmnd;
4201 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
4202 struct lpfc_nodelist *ndlp = rdata->pnode;
4204 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
4205 ndlp->nlp_state != NLP_STE_MAPPED_NODE)
4208 piocbq = &(lpfc_cmd->cur_iocbq);
4209 piocbq->vport = vport;
4211 piocb = &piocbq->iocb;
4213 fcp_cmnd = lpfc_cmd->fcp_cmnd;
4214 /* Clear out any old data in the FCP command area */
4215 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
4216 int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
4217 fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
4218 if (vport->phba->sli_rev == 3 &&
4219 !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
4220 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
4221 piocb->ulpCommand = CMD_FCP_ICMND64_CR;
4222 piocb->ulpContext = ndlp->nlp_rpi;
4223 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4225 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4227 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0;
4228 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
4230 piocb->un.fcpi.fcpi_parm = 0;
4232 /* ulpTimeout is only one byte */
4233 if (lpfc_cmd->timeout > 0xff) {
4235 * Do not timeout the command at the firmware level.
4236 * The driver will provide the timeout mechanism.
4238 piocb->ulpTimeout = 0;
4240 piocb->ulpTimeout = lpfc_cmd->timeout;
4242 if (vport->phba->sli_rev == LPFC_SLI_REV4)
4243 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
4249 * lpfc_scsi_api_table_setup - Set up scsi api function jump table
4250 * @phba: The hba struct for which this call is being executed.
4251 * @dev_grp: The HBA PCI-Device group number.
4253 * This routine sets up the SCSI interface API function jump table in @phba
4255 * Returns: 0 - success, -ENODEV - failure.
4258 lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4261 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
4262 phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
4265 case LPFC_PCI_DEV_LP:
4266 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
4267 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
4268 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
4269 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
4271 case LPFC_PCI_DEV_OC:
4272 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
4273 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
4274 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
4275 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
4278 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4279 "1418 Invalid HBA PCI-device group: 0x%x\n",
4284 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
4285 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4290 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
4291 * @phba: The Hba for which this call is being executed.
4292 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
4293 * @rspiocbq: Pointer to lpfc_iocbq data structure.
4295 * This routine is IOCB completion routine for device reset and target reset
4296 * routine. This routine release scsi buffer associated with lpfc_cmd.
4299 lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
4300 struct lpfc_iocbq *cmdiocbq,
4301 struct lpfc_iocbq *rspiocbq)
4303 struct lpfc_io_buf *lpfc_cmd =
4304 (struct lpfc_io_buf *) cmdiocbq->context1;
4306 lpfc_release_scsi_buf(phba, lpfc_cmd);
4311 * lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check
4312 * if issuing a pci_bus_reset is possibly unsafe
4313 * @phba: lpfc_hba pointer.
4316 * Walks the bus_list to ensure only PCI devices with Emulex
4317 * vendor id, device ids that support hot reset, and only one occurrence
4321 * -EBADSLT, detected invalid device
4325 lpfc_check_pci_resettable(const struct lpfc_hba *phba)
4327 const struct pci_dev *pdev = phba->pcidev;
4328 struct pci_dev *ptr = NULL;
4331 /* Walk the list of devices on the pci_dev's bus */
4332 list_for_each_entry(ptr, &pdev->bus->devices, bus_list) {
4333 /* Check for Emulex Vendor ID */
4334 if (ptr->vendor != PCI_VENDOR_ID_EMULEX) {
4335 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4336 "8346 Non-Emulex vendor found: "
4337 "0x%04x\n", ptr->vendor);
4341 /* Check for valid Emulex Device ID */
4342 switch (ptr->device) {
4343 case PCI_DEVICE_ID_LANCER_FC:
4344 case PCI_DEVICE_ID_LANCER_G6_FC:
4345 case PCI_DEVICE_ID_LANCER_G7_FC:
4348 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4349 "8347 Invalid device found: "
4350 "0x%04x\n", ptr->device);
4354 /* Check for only one function 0 ID to ensure only one HBA on
4357 if (ptr->devfn == 0) {
4358 if (++counter > 1) {
4359 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4360 "8348 More than one device on "
4361 "secondary bus found\n");
4371 * lpfc_info - Info entry point of scsi_host_template data structure
4372 * @host: The scsi host for which this call is being executed.
4374 * This routine provides module information about hba.
4377 * Pointer to char - Success.
4380 lpfc_info(struct Scsi_Host *host)
4382 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
4383 struct lpfc_hba *phba = vport->phba;
4385 static char lpfcinfobuf[384];
4386 char tmp[384] = {0};
4388 memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf));
4389 if (phba && phba->pcidev){
4390 /* Model Description */
4391 scnprintf(tmp, sizeof(tmp), phba->ModelDesc);
4392 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
4393 sizeof(lpfcinfobuf))
4397 scnprintf(tmp, sizeof(tmp),
4398 " on PCI bus %02x device %02x irq %d",
4399 phba->pcidev->bus->number, phba->pcidev->devfn,
4401 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
4402 sizeof(lpfcinfobuf))
4406 if (phba->Port[0]) {
4407 scnprintf(tmp, sizeof(tmp), " port %s", phba->Port);
4408 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
4409 sizeof(lpfcinfobuf))
4414 link_speed = lpfc_sli_port_speed_get(phba);
4415 if (link_speed != 0) {
4416 scnprintf(tmp, sizeof(tmp),
4417 " Logical Link Speed: %d Mbps", link_speed);
4418 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
4419 sizeof(lpfcinfobuf))
4423 /* PCI resettable */
4424 if (!lpfc_check_pci_resettable(phba)) {
4425 scnprintf(tmp, sizeof(tmp), " PCI resettable");
4426 strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf));
4435 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
4436 * @phba: The Hba for which this call is being executed.
4438 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
4439 * The default value of cfg_poll_tmo is 10 milliseconds.
4441 static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
4443 unsigned long poll_tmo_expires =
4444 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
4446 if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq))
4447 mod_timer(&phba->fcp_poll_timer,
4452 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
4453 * @phba: The Hba for which this call is being executed.
4455 * This routine starts the fcp_poll_timer of @phba.
4457 void lpfc_poll_start_timer(struct lpfc_hba * phba)
4459 lpfc_poll_rearm_timer(phba);
4463 * lpfc_poll_timeout - Restart polling timer
4464 * @ptr: Map to lpfc_hba data structure pointer.
4466 * This routine restarts fcp_poll timer, when FCP ring polling is enable
4467 * and FCP Ring interrupt is disable.
4470 void lpfc_poll_timeout(struct timer_list *t)
4472 struct lpfc_hba *phba = from_timer(phba, t, fcp_poll_timer);
4474 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4475 lpfc_sli_handle_fast_ring_event(phba,
4476 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
4478 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4479 lpfc_poll_rearm_timer(phba);
4484 * lpfc_queuecommand - scsi_host_template queuecommand entry point
4485 * @cmnd: Pointer to scsi_cmnd data structure.
4486 * @done: Pointer to done routine.
4488 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
4489 * This routine prepares an IOCB from scsi command and provides to firmware.
4490 * The @done callback is invoked after driver finished processing the command.
4494 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
4497 lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
4499 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4500 struct lpfc_hba *phba = vport->phba;
4501 struct lpfc_rport_data *rdata;
4502 struct lpfc_nodelist *ndlp;
4503 struct lpfc_io_buf *lpfc_cmd;
4504 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
4506 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4510 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
4512 /* sanity check on references */
4513 if (unlikely(!rdata) || unlikely(!rport))
4514 goto out_fail_command;
4516 err = fc_remote_port_chkready(rport);
4519 goto out_fail_command;
4521 ndlp = rdata->pnode;
4523 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
4524 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
4526 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
4527 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
4528 " op:%02x str=%s without registering for"
4529 " BlockGuard - Rejecting command\n",
4530 cmnd->cmnd[0], scsi_get_prot_op(cmnd),
4531 dif_op_str[scsi_get_prot_op(cmnd)]);
4532 goto out_fail_command;
4536 * Catch race where our node has transitioned, but the
4537 * transport is still transitioning.
4539 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
4541 if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
4542 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) {
4543 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
4544 "3377 Target Queue Full, scsi Id:%d "
4545 "Qdepth:%d Pending command:%d"
4546 " WWNN:%02x:%02x:%02x:%02x:"
4547 "%02x:%02x:%02x:%02x, "
4548 " WWPN:%02x:%02x:%02x:%02x:"
4549 "%02x:%02x:%02x:%02x",
4550 ndlp->nlp_sid, ndlp->cmd_qdepth,
4551 atomic_read(&ndlp->cmd_pending),
4552 ndlp->nlp_nodename.u.wwn[0],
4553 ndlp->nlp_nodename.u.wwn[1],
4554 ndlp->nlp_nodename.u.wwn[2],
4555 ndlp->nlp_nodename.u.wwn[3],
4556 ndlp->nlp_nodename.u.wwn[4],
4557 ndlp->nlp_nodename.u.wwn[5],
4558 ndlp->nlp_nodename.u.wwn[6],
4559 ndlp->nlp_nodename.u.wwn[7],
4560 ndlp->nlp_portname.u.wwn[0],
4561 ndlp->nlp_portname.u.wwn[1],
4562 ndlp->nlp_portname.u.wwn[2],
4563 ndlp->nlp_portname.u.wwn[3],
4564 ndlp->nlp_portname.u.wwn[4],
4565 ndlp->nlp_portname.u.wwn[5],
4566 ndlp->nlp_portname.u.wwn[6],
4567 ndlp->nlp_portname.u.wwn[7]);
4572 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd);
4573 if (lpfc_cmd == NULL) {
4574 lpfc_rampdown_queue_depth(phba);
4576 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
4577 "0707 driver's buffer pool is empty, "
4583 * Store the midlayer's command structure for the completion phase
4584 * and complete the command initialization.
4586 lpfc_cmd->pCmd = cmnd;
4587 lpfc_cmd->rdata = rdata;
4588 lpfc_cmd->ndlp = ndlp;
4589 cmnd->host_scribble = (unsigned char *)lpfc_cmd;
4591 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
4592 if (vport->phba->cfg_enable_bg) {
4593 lpfc_printf_vlog(vport,
4594 KERN_INFO, LOG_SCSI_CMD,
4595 "9033 BLKGRD: rcvd %s cmd:x%x "
4596 "sector x%llx cnt %u pt %x\n",
4597 dif_op_str[scsi_get_prot_op(cmnd)],
4599 (unsigned long long)scsi_get_lba(cmnd),
4600 blk_rq_sectors(cmnd->request),
4601 (cmnd->cmnd[1]>>5));
4603 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
4605 if (vport->phba->cfg_enable_bg) {
4606 lpfc_printf_vlog(vport,
4607 KERN_INFO, LOG_SCSI_CMD,
4608 "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
4609 "x%x sector x%llx cnt %u pt %x\n",
4611 (unsigned long long)scsi_get_lba(cmnd),
4612 blk_rq_sectors(cmnd->request),
4613 (cmnd->cmnd[1]>>5));
4615 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
4618 if (unlikely(err)) {
4620 cmnd->result = DID_ERROR << 16;
4621 goto out_fail_command_release_buf;
4623 goto out_host_busy_free_buf;
4626 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
4628 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4629 if (unlikely(phba->cpucheck_on & LPFC_CHECK_SCSI_IO)) {
4630 cpu = raw_smp_processor_id();
4631 if (cpu < LPFC_CHECK_CPU_CNT) {
4632 struct lpfc_sli4_hdw_queue *hdwq =
4633 &phba->sli4_hba.hdwq[lpfc_cmd->hdwq_no];
4634 hdwq->cpucheck_xmt_io[cpu]++;
4638 err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4639 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
4641 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4642 "3376 FCP could not issue IOCB err %x"
4643 "FCP cmd x%x <%d/%llu> "
4644 "sid: x%x did: x%x oxid: x%x "
4645 "Data: x%x x%x x%x x%x\n",
4647 cmnd->device ? cmnd->device->id : 0xffff,
4648 cmnd->device ? cmnd->device->lun : (u64) -1,
4649 vport->fc_myDID, ndlp->nlp_DID,
4650 phba->sli_rev == LPFC_SLI_REV4 ?
4651 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
4652 lpfc_cmd->cur_iocbq.iocb.ulpContext,
4653 lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
4654 lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
4656 (cmnd->request->timeout / 1000));
4658 goto out_host_busy_free_buf;
4660 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4661 lpfc_sli_handle_fast_ring_event(phba,
4662 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
4664 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4665 lpfc_poll_rearm_timer(phba);
4668 if (phba->cfg_xri_rebalancing)
4669 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no);
4673 out_host_busy_free_buf:
4674 idx = lpfc_cmd->hdwq_no;
4675 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
4676 if (phba->sli4_hba.hdwq) {
4677 switch (lpfc_cmd->fcp_cmnd->fcpCntl3) {
4679 phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--;
4682 phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--;
4685 phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--;
4688 lpfc_release_scsi_buf(phba, lpfc_cmd);
4690 return SCSI_MLQUEUE_HOST_BUSY;
4693 return SCSI_MLQUEUE_TARGET_BUSY;
4695 out_fail_command_release_buf:
4696 lpfc_release_scsi_buf(phba, lpfc_cmd);
4699 cmnd->scsi_done(cmnd);
4705 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
4706 * @cmnd: Pointer to scsi_cmnd data structure.
4708 * This routine aborts @cmnd pending in base driver.
4715 lpfc_abort_handler(struct scsi_cmnd *cmnd)
4717 struct Scsi_Host *shost = cmnd->device->host;
4718 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4719 struct lpfc_hba *phba = vport->phba;
4720 struct lpfc_iocbq *iocb;
4721 struct lpfc_iocbq *abtsiocb;
4722 struct lpfc_io_buf *lpfc_cmd;
4724 int ret = SUCCESS, status = 0;
4725 struct lpfc_sli_ring *pring_s4 = NULL;
4727 unsigned long flags;
4728 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
4730 status = fc_block_scsi_eh(cmnd);
4731 if (status != 0 && status != SUCCESS)
4734 lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble;
4738 spin_lock_irqsave(&phba->hbalock, flags);
4739 /* driver queued commands are in process of being flushed */
4740 if (phba->hba_flag & HBA_IOQ_FLUSH) {
4741 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4742 "3168 SCSI Layer abort requested I/O has been "
4743 "flushed by LLD.\n");
4748 /* Guard against IO completion being called at same time */
4749 spin_lock(&lpfc_cmd->buf_lock);
4751 if (!lpfc_cmd->pCmd) {
4752 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4753 "2873 SCSI Layer I/O Abort Request IO CMPL Status "
4754 "x%x ID %d LUN %llu\n",
4755 SUCCESS, cmnd->device->id, cmnd->device->lun);
4756 goto out_unlock_buf;
4759 iocb = &lpfc_cmd->cur_iocbq;
4760 if (phba->sli_rev == LPFC_SLI_REV4) {
4761 pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring;
4764 goto out_unlock_buf;
4766 spin_lock(&pring_s4->ring_lock);
4768 /* the command is in process of being cancelled */
4769 if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
4770 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4771 "3169 SCSI Layer abort requested I/O has been "
4772 "cancelled by LLD.\n");
4774 goto out_unlock_ring;
4777 * If pCmd field of the corresponding lpfc_io_buf structure
4778 * points to a different SCSI command, then the driver has
4779 * already completed this command, but the midlayer did not
4780 * see the completion before the eh fired. Just return SUCCESS.
4782 if (lpfc_cmd->pCmd != cmnd) {
4783 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4784 "3170 SCSI Layer abort requested I/O has been "
4785 "completed by LLD.\n");
4786 goto out_unlock_ring;
4789 BUG_ON(iocb->context1 != lpfc_cmd);
4791 /* abort issued in recovery is still in progress */
4792 if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) {
4793 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4794 "3389 SCSI Layer I/O Abort Request is pending\n");
4795 if (phba->sli_rev == LPFC_SLI_REV4)
4796 spin_unlock(&pring_s4->ring_lock);
4797 spin_unlock(&lpfc_cmd->buf_lock);
4798 spin_unlock_irqrestore(&phba->hbalock, flags);
4802 abtsiocb = __lpfc_sli_get_iocbq(phba);
4803 if (abtsiocb == NULL) {
4805 goto out_unlock_ring;
4808 /* Indicate the IO is being aborted by the driver. */
4809 iocb->iocb_flag |= LPFC_DRIVER_ABORTED;
4812 * The scsi command can not be in txq and it is in flight because the
4813 * pCmd is still pointig at the SCSI command we have to abort. There
4814 * is no need to search the txcmplq. Just send an abort to the FW.
4818 icmd = &abtsiocb->iocb;
4819 icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
4820 icmd->un.acxri.abortContextTag = cmd->ulpContext;
4821 if (phba->sli_rev == LPFC_SLI_REV4)
4822 icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
4824 icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
4827 icmd->ulpClass = cmd->ulpClass;
4829 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
4830 abtsiocb->hba_wqidx = iocb->hba_wqidx;
4831 abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
4832 if (iocb->iocb_flag & LPFC_IO_FOF)
4833 abtsiocb->iocb_flag |= LPFC_IO_FOF;
4835 if (lpfc_is_link_up(phba))
4836 icmd->ulpCommand = CMD_ABORT_XRI_CN;
4838 icmd->ulpCommand = CMD_CLOSE_XRI_CN;
4840 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
4841 abtsiocb->vport = vport;
4842 lpfc_cmd->waitq = &waitq;
4843 if (phba->sli_rev == LPFC_SLI_REV4) {
4844 /* Note: both hbalock and ring_lock must be set here */
4845 ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
4847 spin_unlock(&pring_s4->ring_lock);
4849 ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4853 if (ret_val == IOCB_ERROR) {
4854 /* Indicate the IO is not being aborted by the driver. */
4855 iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
4856 lpfc_cmd->waitq = NULL;
4857 spin_unlock(&lpfc_cmd->buf_lock);
4858 spin_unlock_irqrestore(&phba->hbalock, flags);
4859 lpfc_sli_release_iocbq(phba, abtsiocb);
4864 /* no longer need the lock after this point */
4865 spin_unlock(&lpfc_cmd->buf_lock);
4866 spin_unlock_irqrestore(&phba->hbalock, flags);
4868 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4869 lpfc_sli_handle_fast_ring_event(phba,
4870 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
4873 /* Wait for abort to complete */
4874 wait_event_timeout(waitq,
4875 (lpfc_cmd->pCmd != cmnd),
4876 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
4878 spin_lock(&lpfc_cmd->buf_lock);
4880 if (lpfc_cmd->pCmd == cmnd) {
4882 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
4883 "0748 abort handler timed out waiting "
4884 "for aborting I/O (xri:x%x) to complete: "
4885 "ret %#x, ID %d, LUN %llu\n",
4886 iocb->sli4_xritag, ret,
4887 cmnd->device->id, cmnd->device->lun);
4890 lpfc_cmd->waitq = NULL;
4892 spin_unlock(&lpfc_cmd->buf_lock);
4896 if (phba->sli_rev == LPFC_SLI_REV4)
4897 spin_unlock(&pring_s4->ring_lock);
4899 spin_unlock(&lpfc_cmd->buf_lock);
4901 spin_unlock_irqrestore(&phba->hbalock, flags);
4903 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4904 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
4905 "LUN %llu\n", ret, cmnd->device->id,
4911 lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
4913 switch (task_mgmt_cmd) {
4914 case FCP_ABORT_TASK_SET:
4915 return "ABORT_TASK_SET";
4916 case FCP_CLEAR_TASK_SET:
4917 return "FCP_CLEAR_TASK_SET";
4919 return "FCP_BUS_RESET";
4921 return "FCP_LUN_RESET";
4922 case FCP_TARGET_RESET:
4923 return "FCP_TARGET_RESET";
4925 return "FCP_CLEAR_ACA";
4926 case FCP_TERMINATE_TASK:
4927 return "FCP_TERMINATE_TASK";
4935 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed
4936 * @vport: The virtual port for which this call is being executed.
4937 * @lpfc_cmd: Pointer to lpfc_io_buf data structure.
4939 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded
4946 lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd)
4948 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
4951 uint8_t rsp_info_code;
4956 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4957 "0703 fcp_rsp is missing\n");
4959 rsp_info = fcprsp->rspStatus2;
4960 rsp_len = be32_to_cpu(fcprsp->rspRspLen);
4961 rsp_info_code = fcprsp->rspInfo3;
4964 lpfc_printf_vlog(vport, KERN_INFO,
4966 "0706 fcp_rsp valid 0x%x,"
4967 " rsp len=%d code 0x%x\n",
4969 rsp_len, rsp_info_code);
4971 /* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN
4972 * field specifies the number of valid bytes of FCP_RSP_INFO.
4973 * The FCP_RSP_LEN field shall be set to 0x04 or 0x08
4975 if ((fcprsp->rspStatus2 & RSP_LEN_VALID) &&
4976 ((rsp_len == 8) || (rsp_len == 4))) {
4977 switch (rsp_info_code) {
4978 case RSP_NO_FAILURE:
4979 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4980 "0715 Task Mgmt No Failure\n");
4983 case RSP_TM_NOT_SUPPORTED: /* TM rejected */
4984 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4985 "0716 Task Mgmt Target "
4988 case RSP_TM_NOT_COMPLETED: /* TM failed */
4989 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4990 "0717 Task Mgmt Target "
4993 case RSP_TM_INVALID_LU: /* TM to invalid LU! */
4994 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4995 "0718 Task Mgmt to invalid "
5006 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
5007 * @vport: The virtual port for which this call is being executed.
5008 * @rdata: Pointer to remote port local data
5009 * @tgt_id: Target ID of remote device.
5010 * @lun_id: Lun number for the TMF
5011 * @task_mgmt_cmd: type of TMF to send
5013 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
5021 lpfc_send_taskmgmt(struct lpfc_vport *vport, struct scsi_cmnd *cmnd,
5022 unsigned int tgt_id, uint64_t lun_id,
5023 uint8_t task_mgmt_cmd)
5025 struct lpfc_hba *phba = vport->phba;
5026 struct lpfc_io_buf *lpfc_cmd;
5027 struct lpfc_iocbq *iocbq;
5028 struct lpfc_iocbq *iocbqrsp;
5029 struct lpfc_rport_data *rdata;
5030 struct lpfc_nodelist *pnode;
5034 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5035 if (!rdata || !rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
5037 pnode = rdata->pnode;
5039 lpfc_cmd = lpfc_get_scsi_buf(phba, pnode, NULL);
5040 if (lpfc_cmd == NULL)
5042 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo;
5043 lpfc_cmd->rdata = rdata;
5044 lpfc_cmd->pCmd = cmnd;
5045 lpfc_cmd->ndlp = pnode;
5047 status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
5050 lpfc_release_scsi_buf(phba, lpfc_cmd);
5054 iocbq = &lpfc_cmd->cur_iocbq;
5055 iocbqrsp = lpfc_sli_get_iocbq(phba);
5056 if (iocbqrsp == NULL) {
5057 lpfc_release_scsi_buf(phba, lpfc_cmd);
5060 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
5062 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5063 "0702 Issue %s to TGT %d LUN %llu "
5064 "rpi x%x nlp_flag x%x Data: x%x x%x\n",
5065 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
5066 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
5069 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
5070 iocbq, iocbqrsp, lpfc_cmd->timeout);
5071 if ((status != IOCB_SUCCESS) ||
5072 (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) {
5073 if (status != IOCB_SUCCESS ||
5074 iocbqrsp->iocb.ulpStatus != IOSTAT_FCP_RSP_ERROR)
5075 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5076 "0727 TMF %s to TGT %d LUN %llu "
5077 "failed (%d, %d) iocb_flag x%x\n",
5078 lpfc_taskmgmt_name(task_mgmt_cmd),
5080 iocbqrsp->iocb.ulpStatus,
5081 iocbqrsp->iocb.un.ulpWord[4],
5083 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */
5084 if (status == IOCB_SUCCESS) {
5085 if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
5086 /* Something in the FCP_RSP was invalid.
5087 * Check conditions */
5088 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd);
5091 } else if (status == IOCB_TIMEDOUT) {
5092 ret = TIMEOUT_ERROR;
5099 lpfc_sli_release_iocbq(phba, iocbqrsp);
5101 if (ret != TIMEOUT_ERROR)
5102 lpfc_release_scsi_buf(phba, lpfc_cmd);
5108 * lpfc_chk_tgt_mapped -
5109 * @vport: The virtual port to check on
5110 * @cmnd: Pointer to scsi_cmnd data structure.
5112 * This routine delays until the scsi target (aka rport) for the
5113 * command exists (is present and logged in) or we declare it non-existent.
5120 lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
5122 struct lpfc_rport_data *rdata;
5123 struct lpfc_nodelist *pnode;
5124 unsigned long later;
5126 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5128 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5129 "0797 Tgt Map rport failure: rdata x%px\n", rdata);
5132 pnode = rdata->pnode;
5134 * If target is not in a MAPPED state, delay until
5135 * target is rediscovered or devloss timeout expires.
5137 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5138 while (time_after(later, jiffies)) {
5139 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
5141 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
5143 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
5144 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5147 pnode = rdata->pnode;
5149 if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
5150 (pnode->nlp_state != NLP_STE_MAPPED_NODE))
5156 * lpfc_reset_flush_io_context -
5157 * @vport: The virtual port (scsi_host) for the flush context
5158 * @tgt_id: If aborting by Target contect - specifies the target id
5159 * @lun_id: If aborting by Lun context - specifies the lun id
5160 * @context: specifies the context level to flush at.
5162 * After a reset condition via TMF, we need to flush orphaned i/o
5163 * contexts from the adapter. This routine aborts any contexts
5164 * outstanding, then waits for their completions. The wait is
5165 * bounded by devloss_tmo though.
5172 lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
5173 uint64_t lun_id, lpfc_ctx_cmd context)
5175 struct lpfc_hba *phba = vport->phba;
5176 unsigned long later;
5179 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
5181 lpfc_sli_abort_taskmgmt(vport,
5182 &phba->sli.sli3_ring[LPFC_FCP_RING],
5183 tgt_id, lun_id, context);
5184 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5185 while (time_after(later, jiffies) && cnt) {
5186 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
5187 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
5190 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5191 "0724 I/O flush failure for context %s : cnt x%x\n",
5192 ((context == LPFC_CTX_LUN) ? "LUN" :
5193 ((context == LPFC_CTX_TGT) ? "TGT" :
5194 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
5202 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
5203 * @cmnd: Pointer to scsi_cmnd data structure.
5205 * This routine does a device reset by sending a LUN_RESET task management
5213 lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
5215 struct Scsi_Host *shost = cmnd->device->host;
5216 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5217 struct lpfc_rport_data *rdata;
5218 struct lpfc_nodelist *pnode;
5219 unsigned tgt_id = cmnd->device->id;
5220 uint64_t lun_id = cmnd->device->lun;
5221 struct lpfc_scsi_event_header scsi_event;
5224 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5225 if (!rdata || !rdata->pnode) {
5226 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5227 "0798 Device Reset rdata failure: rdata x%px\n",
5231 pnode = rdata->pnode;
5232 status = fc_block_scsi_eh(cmnd);
5233 if (status != 0 && status != SUCCESS)
5236 status = lpfc_chk_tgt_mapped(vport, cmnd);
5237 if (status == FAILED) {
5238 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5239 "0721 Device Reset rport failure: rdata x%px\n", rdata);
5243 scsi_event.event_type = FC_REG_SCSI_EVENT;
5244 scsi_event.subcategory = LPFC_EVENT_LUNRESET;
5245 scsi_event.lun = lun_id;
5246 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5247 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5249 fc_host_post_vendor_event(shost, fc_get_event_number(),
5250 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5252 status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id,
5255 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5256 "0713 SCSI layer issued Device Reset (%d, %llu) "
5257 "return x%x\n", tgt_id, lun_id, status);
5260 * We have to clean up i/o as : they may be orphaned by the TMF;
5261 * or if the TMF failed, they may be in an indeterminate state.
5263 * We will report success if all the i/o aborts successfully.
5265 if (status == SUCCESS)
5266 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5273 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
5274 * @cmnd: Pointer to scsi_cmnd data structure.
5276 * This routine does a target reset by sending a TARGET_RESET task management
5284 lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
5286 struct Scsi_Host *shost = cmnd->device->host;
5287 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5288 struct lpfc_rport_data *rdata;
5289 struct lpfc_nodelist *pnode;
5290 unsigned tgt_id = cmnd->device->id;
5291 uint64_t lun_id = cmnd->device->lun;
5292 struct lpfc_scsi_event_header scsi_event;
5295 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5296 if (!rdata || !rdata->pnode) {
5297 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5298 "0799 Target Reset rdata failure: rdata x%px\n",
5302 pnode = rdata->pnode;
5303 status = fc_block_scsi_eh(cmnd);
5304 if (status != 0 && status != SUCCESS)
5307 status = lpfc_chk_tgt_mapped(vport, cmnd);
5308 if (status == FAILED) {
5309 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5310 "0722 Target Reset rport failure: rdata x%px\n", rdata);
5312 spin_lock_irq(shost->host_lock);
5313 pnode->nlp_flag &= ~NLP_NPR_ADISC;
5314 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
5315 spin_unlock_irq(shost->host_lock);
5317 lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5319 return FAST_IO_FAIL;
5322 scsi_event.event_type = FC_REG_SCSI_EVENT;
5323 scsi_event.subcategory = LPFC_EVENT_TGTRESET;
5325 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5326 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5328 fc_host_post_vendor_event(shost, fc_get_event_number(),
5329 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5331 status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id,
5334 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5335 "0723 SCSI layer issued Target Reset (%d, %llu) "
5336 "return x%x\n", tgt_id, lun_id, status);
5339 * We have to clean up i/o as : they may be orphaned by the TMF;
5340 * or if the TMF failed, they may be in an indeterminate state.
5342 * We will report success if all the i/o aborts successfully.
5344 if (status == SUCCESS)
5345 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5351 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
5352 * @cmnd: Pointer to scsi_cmnd data structure.
5354 * This routine does target reset to all targets on @cmnd->device->host.
5355 * This emulates Parallel SCSI Bus Reset Semantics.
5362 lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
5364 struct Scsi_Host *shost = cmnd->device->host;
5365 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5366 struct lpfc_nodelist *ndlp = NULL;
5367 struct lpfc_scsi_event_header scsi_event;
5369 int ret = SUCCESS, status, i;
5371 scsi_event.event_type = FC_REG_SCSI_EVENT;
5372 scsi_event.subcategory = LPFC_EVENT_BUSRESET;
5374 memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
5375 memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
5377 fc_host_post_vendor_event(shost, fc_get_event_number(),
5378 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5380 status = fc_block_scsi_eh(cmnd);
5381 if (status != 0 && status != SUCCESS)
5385 * Since the driver manages a single bus device, reset all
5386 * targets known to the driver. Should any target reset
5387 * fail, this routine returns failure to the midlayer.
5389 for (i = 0; i < LPFC_MAX_TARGET; i++) {
5390 /* Search for mapped node by target ID */
5392 spin_lock_irq(shost->host_lock);
5393 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5394 if (!NLP_CHK_NODE_ACT(ndlp))
5396 if (vport->phba->cfg_fcp2_no_tgt_reset &&
5397 (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
5399 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5400 ndlp->nlp_sid == i &&
5402 ndlp->nlp_type & NLP_FCP_TARGET) {
5407 spin_unlock_irq(shost->host_lock);
5411 status = lpfc_send_taskmgmt(vport, cmnd,
5412 i, 0, FCP_TARGET_RESET);
5414 if (status != SUCCESS) {
5415 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5416 "0700 Bus Reset on target %d failed\n",
5422 * We have to clean up i/o as : they may be orphaned by the TMFs
5423 * above; or if any of the TMFs failed, they may be in an
5424 * indeterminate state.
5425 * We will report success if all the i/o aborts successfully.
5428 status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
5429 if (status != SUCCESS)
5432 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5433 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
5438 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
5439 * @cmnd: Pointer to scsi_cmnd data structure.
5441 * This routine does host reset to the adaptor port. It brings the HBA
5442 * offline, performs a board restart, and then brings the board back online.
5443 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local
5444 * reject all outstanding SCSI commands to the host and error returned
5445 * back to SCSI mid-level. As this will be SCSI mid-level's last resort
5446 * of error handling, it will only return error if resetting of the adapter
5447 * is not successful; in all other cases, will return success.
5454 lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
5456 struct Scsi_Host *shost = cmnd->device->host;
5457 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5458 struct lpfc_hba *phba = vport->phba;
5459 int rc, ret = SUCCESS;
5461 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5462 "3172 SCSI layer issued Host Reset Data:\n");
5464 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
5466 rc = lpfc_sli_brdrestart(phba);
5470 rc = lpfc_online(phba);
5474 lpfc_unblock_mgmt_io(phba);
5478 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5479 "3323 Failed host reset\n");
5480 lpfc_unblock_mgmt_io(phba);
5485 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
5486 * @sdev: Pointer to scsi_device.
5488 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
5489 * globally available list of scsi buffers. This routine also makes sure scsi
5490 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
5491 * of scsi buffer exists for the lifetime of the driver.
5498 lpfc_slave_alloc(struct scsi_device *sdev)
5500 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5501 struct lpfc_hba *phba = vport->phba;
5502 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
5504 uint32_t num_to_alloc = 0;
5505 int num_allocated = 0;
5507 struct lpfc_device_data *device_data;
5508 unsigned long flags;
5509 struct lpfc_name target_wwpn;
5511 if (!rport || fc_remote_port_chkready(rport))
5514 if (phba->cfg_fof) {
5517 * Check to see if the device data structure for the lun
5518 * exists. If not, create one.
5521 u64_to_wwn(rport->port_name, target_wwpn.u.wwn);
5522 spin_lock_irqsave(&phba->devicelock, flags);
5523 device_data = __lpfc_get_device_data(phba,
5525 &vport->fc_portname,
5529 spin_unlock_irqrestore(&phba->devicelock, flags);
5530 device_data = lpfc_create_device_data(phba,
5531 &vport->fc_portname,
5534 phba->cfg_XLanePriority,
5538 spin_lock_irqsave(&phba->devicelock, flags);
5539 list_add_tail(&device_data->listentry, &phba->luns);
5541 device_data->rport_data = rport->dd_data;
5542 device_data->available = true;
5543 spin_unlock_irqrestore(&phba->devicelock, flags);
5544 sdev->hostdata = device_data;
5546 sdev->hostdata = rport->dd_data;
5548 sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
5550 /* For SLI4, all IO buffers are pre-allocated */
5551 if (phba->sli_rev == LPFC_SLI_REV4)
5554 /* This code path is now ONLY for SLI3 adapters */
5557 * Populate the cmds_per_lun count scsi_bufs into this host's globally
5558 * available list of scsi buffers. Don't allocate more than the
5559 * HBA limit conveyed to the midlayer via the host structure. The
5560 * formula accounts for the lun_queue_depth + error handlers + 1
5561 * extra. This list of scsi bufs exists for the lifetime of the driver.
5563 total = phba->total_scsi_bufs;
5564 num_to_alloc = vport->cfg_lun_queue_depth + 2;
5566 /* If allocated buffers are enough do nothing */
5567 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
5570 /* Allow some exchanges to be available always to complete discovery */
5571 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
5572 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5573 "0704 At limitation of %d preallocated "
5574 "command buffers\n", total);
5576 /* Allow some exchanges to be available always to complete discovery */
5577 } else if (total + num_to_alloc >
5578 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
5579 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5580 "0705 Allocation request of %d "
5581 "command buffers will exceed max of %d. "
5582 "Reducing allocation request to %d.\n",
5583 num_to_alloc, phba->cfg_hba_queue_depth,
5584 (phba->cfg_hba_queue_depth - total));
5585 num_to_alloc = phba->cfg_hba_queue_depth - total;
5587 num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc);
5588 if (num_to_alloc != num_allocated) {
5589 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5590 "0708 Allocation request of %d "
5591 "command buffers did not succeed. "
5592 "Allocated %d buffers.\n",
5593 num_to_alloc, num_allocated);
5595 if (num_allocated > 0)
5596 phba->total_scsi_bufs += num_allocated;
5601 * lpfc_slave_configure - scsi_host_template slave_configure entry point
5602 * @sdev: Pointer to scsi_device.
5604 * This routine configures following items
5605 * - Tag command queuing support for @sdev if supported.
5606 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
5612 lpfc_slave_configure(struct scsi_device *sdev)
5614 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5615 struct lpfc_hba *phba = vport->phba;
5617 scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth);
5619 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
5620 lpfc_sli_handle_fast_ring_event(phba,
5621 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
5622 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
5623 lpfc_poll_rearm_timer(phba);
5630 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
5631 * @sdev: Pointer to scsi_device.
5633 * This routine sets @sdev hostatdata filed to null.
5636 lpfc_slave_destroy(struct scsi_device *sdev)
5638 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5639 struct lpfc_hba *phba = vport->phba;
5640 unsigned long flags;
5641 struct lpfc_device_data *device_data = sdev->hostdata;
5643 atomic_dec(&phba->sdev_cnt);
5644 if ((phba->cfg_fof) && (device_data)) {
5645 spin_lock_irqsave(&phba->devicelock, flags);
5646 device_data->available = false;
5647 if (!device_data->oas_enabled)
5648 lpfc_delete_device_data(phba, device_data);
5649 spin_unlock_irqrestore(&phba->devicelock, flags);
5651 sdev->hostdata = NULL;
5656 * lpfc_create_device_data - creates and initializes device data structure for OAS
5657 * @pha: Pointer to host bus adapter structure.
5658 * @vport_wwpn: Pointer to vport's wwpn information
5659 * @target_wwpn: Pointer to target's wwpn information
5660 * @lun: Lun on target
5661 * @atomic_create: Flag to indicate if memory should be allocated using the
5662 * GFP_ATOMIC flag or not.
5664 * This routine creates a device data structure which will contain identifying
5665 * information for the device (host wwpn, target wwpn, lun), state of OAS,
5666 * whether or not the corresponding lun is available by the system,
5667 * and pointer to the rport data.
5671 * Pointer to lpfc_device_data - Success
5673 struct lpfc_device_data*
5674 lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5675 struct lpfc_name *target_wwpn, uint64_t lun,
5676 uint32_t pri, bool atomic_create)
5679 struct lpfc_device_data *lun_info;
5682 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5686 /* Attempt to create the device data to contain lun info */
5689 memory_flags = GFP_ATOMIC;
5691 memory_flags = GFP_KERNEL;
5692 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags);
5695 INIT_LIST_HEAD(&lun_info->listentry);
5696 lun_info->rport_data = NULL;
5697 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn,
5698 sizeof(struct lpfc_name));
5699 memcpy(&lun_info->device_id.target_wwpn, target_wwpn,
5700 sizeof(struct lpfc_name));
5701 lun_info->device_id.lun = lun;
5702 lun_info->oas_enabled = false;
5703 lun_info->priority = pri;
5704 lun_info->available = false;
5709 * lpfc_delete_device_data - frees a device data structure for OAS
5710 * @pha: Pointer to host bus adapter structure.
5711 * @lun_info: Pointer to device data structure to free.
5713 * This routine frees the previously allocated device data structure passed.
5717 lpfc_delete_device_data(struct lpfc_hba *phba,
5718 struct lpfc_device_data *lun_info)
5721 if (unlikely(!phba) || !lun_info ||
5725 if (!list_empty(&lun_info->listentry))
5726 list_del(&lun_info->listentry);
5727 mempool_free(lun_info, phba->device_data_mem_pool);
5732 * __lpfc_get_device_data - returns the device data for the specified lun
5733 * @pha: Pointer to host bus adapter structure.
5734 * @list: Point to list to search.
5735 * @vport_wwpn: Pointer to vport's wwpn information
5736 * @target_wwpn: Pointer to target's wwpn information
5737 * @lun: Lun on target
5739 * This routine searches the list passed for the specified lun's device data.
5740 * This function does not hold locks, it is the responsibility of the caller
5741 * to ensure the proper lock is held before calling the function.
5745 * Pointer to lpfc_device_data - Success
5747 struct lpfc_device_data*
5748 __lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list,
5749 struct lpfc_name *vport_wwpn,
5750 struct lpfc_name *target_wwpn, uint64_t lun)
5753 struct lpfc_device_data *lun_info;
5755 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn ||
5759 /* Check to see if the lun is already enabled for OAS. */
5761 list_for_each_entry(lun_info, list, listentry) {
5762 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5763 sizeof(struct lpfc_name)) == 0) &&
5764 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5765 sizeof(struct lpfc_name)) == 0) &&
5766 (lun_info->device_id.lun == lun))
5774 * lpfc_find_next_oas_lun - searches for the next oas lun
5775 * @pha: Pointer to host bus adapter structure.
5776 * @vport_wwpn: Pointer to vport's wwpn information
5777 * @target_wwpn: Pointer to target's wwpn information
5778 * @starting_lun: Pointer to the lun to start searching for
5779 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information
5780 * @found_target_wwpn: Pointer to the found lun's target wwpn information
5781 * @found_lun: Pointer to the found lun.
5782 * @found_lun_status: Pointer to status of the found lun.
5784 * This routine searches the luns list for the specified lun
5785 * or the first lun for the vport/target. If the vport wwpn contains
5786 * a zero value then a specific vport is not specified. In this case
5787 * any vport which contains the lun will be considered a match. If the
5788 * target wwpn contains a zero value then a specific target is not specified.
5789 * In this case any target which contains the lun will be considered a
5790 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status
5791 * are returned. The function will also return the next lun if available.
5792 * If the next lun is not found, starting_lun parameter will be set to
5800 lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5801 struct lpfc_name *target_wwpn, uint64_t *starting_lun,
5802 struct lpfc_name *found_vport_wwpn,
5803 struct lpfc_name *found_target_wwpn,
5804 uint64_t *found_lun,
5805 uint32_t *found_lun_status,
5806 uint32_t *found_lun_pri)
5809 unsigned long flags;
5810 struct lpfc_device_data *lun_info;
5811 struct lpfc_device_id *device_id;
5815 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5816 !starting_lun || !found_vport_wwpn ||
5817 !found_target_wwpn || !found_lun || !found_lun_status ||
5818 (*starting_lun == NO_MORE_OAS_LUN) ||
5822 lun = *starting_lun;
5823 *found_lun = NO_MORE_OAS_LUN;
5824 *starting_lun = NO_MORE_OAS_LUN;
5826 /* Search for lun or the lun closet in value */
5828 spin_lock_irqsave(&phba->devicelock, flags);
5829 list_for_each_entry(lun_info, &phba->luns, listentry) {
5830 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) ||
5831 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5832 sizeof(struct lpfc_name)) == 0)) &&
5833 ((wwn_to_u64(target_wwpn->u.wwn) == 0) ||
5834 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5835 sizeof(struct lpfc_name)) == 0)) &&
5836 (lun_info->oas_enabled)) {
5837 device_id = &lun_info->device_id;
5839 ((lun == FIND_FIRST_OAS_LUN) ||
5840 (device_id->lun == lun))) {
5841 *found_lun = device_id->lun;
5842 memcpy(found_vport_wwpn,
5843 &device_id->vport_wwpn,
5844 sizeof(struct lpfc_name));
5845 memcpy(found_target_wwpn,
5846 &device_id->target_wwpn,
5847 sizeof(struct lpfc_name));
5848 if (lun_info->available)
5850 OAS_LUN_STATUS_EXISTS;
5852 *found_lun_status = 0;
5853 *found_lun_pri = lun_info->priority;
5854 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)
5855 memset(vport_wwpn, 0x0,
5856 sizeof(struct lpfc_name));
5857 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)
5858 memset(target_wwpn, 0x0,
5859 sizeof(struct lpfc_name));
5862 *starting_lun = device_id->lun;
5863 memcpy(vport_wwpn, &device_id->vport_wwpn,
5864 sizeof(struct lpfc_name));
5865 memcpy(target_wwpn, &device_id->target_wwpn,
5866 sizeof(struct lpfc_name));
5871 spin_unlock_irqrestore(&phba->devicelock, flags);
5876 * lpfc_enable_oas_lun - enables a lun for OAS operations
5877 * @pha: Pointer to host bus adapter structure.
5878 * @vport_wwpn: Pointer to vport's wwpn information
5879 * @target_wwpn: Pointer to target's wwpn information
5882 * This routine enables a lun for oas operations. The routines does so by
5883 * doing the following :
5885 * 1) Checks to see if the device data for the lun has been created.
5886 * 2) If found, sets the OAS enabled flag if not set and returns.
5887 * 3) Otherwise, creates a device data structure.
5888 * 4) If successfully created, indicates the device data is for an OAS lun,
5889 * indicates the lun is not available and add to the list of luns.
5896 lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5897 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
5900 struct lpfc_device_data *lun_info;
5901 unsigned long flags;
5903 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5907 spin_lock_irqsave(&phba->devicelock, flags);
5909 /* Check to see if the device data for the lun has been created */
5910 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn,
5913 if (!lun_info->oas_enabled)
5914 lun_info->oas_enabled = true;
5915 lun_info->priority = pri;
5916 spin_unlock_irqrestore(&phba->devicelock, flags);
5920 /* Create an lun info structure and add to list of luns */
5921 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun,
5924 lun_info->oas_enabled = true;
5925 lun_info->priority = pri;
5926 lun_info->available = false;
5927 list_add_tail(&lun_info->listentry, &phba->luns);
5928 spin_unlock_irqrestore(&phba->devicelock, flags);
5931 spin_unlock_irqrestore(&phba->devicelock, flags);
5936 * lpfc_disable_oas_lun - disables a lun for OAS operations
5937 * @pha: Pointer to host bus adapter structure.
5938 * @vport_wwpn: Pointer to vport's wwpn information
5939 * @target_wwpn: Pointer to target's wwpn information
5942 * This routine disables a lun for oas operations. The routines does so by
5943 * doing the following :
5945 * 1) Checks to see if the device data for the lun is created.
5946 * 2) If present, clears the flag indicating this lun is for OAS.
5947 * 3) If the lun is not available by the system, the device data is
5955 lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5956 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
5959 struct lpfc_device_data *lun_info;
5960 unsigned long flags;
5962 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5966 spin_lock_irqsave(&phba->devicelock, flags);
5968 /* Check to see if the lun is available. */
5969 lun_info = __lpfc_get_device_data(phba,
5970 &phba->luns, vport_wwpn,
5973 lun_info->oas_enabled = false;
5974 lun_info->priority = pri;
5975 if (!lun_info->available)
5976 lpfc_delete_device_data(phba, lun_info);
5977 spin_unlock_irqrestore(&phba->devicelock, flags);
5981 spin_unlock_irqrestore(&phba->devicelock, flags);
5986 lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
5988 return SCSI_MLQUEUE_HOST_BUSY;
5992 lpfc_no_handler(struct scsi_cmnd *cmnd)
5998 lpfc_no_slave(struct scsi_device *sdev)
6003 struct scsi_host_template lpfc_template_nvme = {
6004 .module = THIS_MODULE,
6005 .name = LPFC_DRIVER_NAME,
6006 .proc_name = LPFC_DRIVER_NAME,
6008 .queuecommand = lpfc_no_command,
6009 .eh_abort_handler = lpfc_no_handler,
6010 .eh_device_reset_handler = lpfc_no_handler,
6011 .eh_target_reset_handler = lpfc_no_handler,
6012 .eh_bus_reset_handler = lpfc_no_handler,
6013 .eh_host_reset_handler = lpfc_no_handler,
6014 .slave_alloc = lpfc_no_slave,
6015 .slave_configure = lpfc_no_slave,
6016 .scan_finished = lpfc_scan_finished,
6020 .shost_attrs = lpfc_hba_attrs,
6021 .max_sectors = 0xFFFF,
6022 .vendor_id = LPFC_NL_VENDOR_ID,
6023 .track_queue_depth = 0,
6026 struct scsi_host_template lpfc_template_no_hr = {
6027 .module = THIS_MODULE,
6028 .name = LPFC_DRIVER_NAME,
6029 .proc_name = LPFC_DRIVER_NAME,
6031 .queuecommand = lpfc_queuecommand,
6032 .eh_timed_out = fc_eh_timed_out,
6033 .eh_abort_handler = lpfc_abort_handler,
6034 .eh_device_reset_handler = lpfc_device_reset_handler,
6035 .eh_target_reset_handler = lpfc_target_reset_handler,
6036 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6037 .slave_alloc = lpfc_slave_alloc,
6038 .slave_configure = lpfc_slave_configure,
6039 .slave_destroy = lpfc_slave_destroy,
6040 .scan_finished = lpfc_scan_finished,
6042 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6043 .cmd_per_lun = LPFC_CMD_PER_LUN,
6044 .shost_attrs = lpfc_hba_attrs,
6045 .max_sectors = 0xFFFFFFFF,
6046 .vendor_id = LPFC_NL_VENDOR_ID,
6047 .change_queue_depth = scsi_change_queue_depth,
6048 .track_queue_depth = 1,
6051 struct scsi_host_template lpfc_template = {
6052 .module = THIS_MODULE,
6053 .name = LPFC_DRIVER_NAME,
6054 .proc_name = LPFC_DRIVER_NAME,
6056 .queuecommand = lpfc_queuecommand,
6057 .eh_timed_out = fc_eh_timed_out,
6058 .eh_abort_handler = lpfc_abort_handler,
6059 .eh_device_reset_handler = lpfc_device_reset_handler,
6060 .eh_target_reset_handler = lpfc_target_reset_handler,
6061 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6062 .eh_host_reset_handler = lpfc_host_reset_handler,
6063 .slave_alloc = lpfc_slave_alloc,
6064 .slave_configure = lpfc_slave_configure,
6065 .slave_destroy = lpfc_slave_destroy,
6066 .scan_finished = lpfc_scan_finished,
6068 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6069 .cmd_per_lun = LPFC_CMD_PER_LUN,
6070 .shost_attrs = lpfc_hba_attrs,
6071 .max_sectors = 0xFFFF,
6072 .vendor_id = LPFC_NL_VENDOR_ID,
6073 .change_queue_depth = scsi_change_queue_depth,
6074 .track_queue_depth = 1,
6077 struct scsi_host_template lpfc_vport_template = {
6078 .module = THIS_MODULE,
6079 .name = LPFC_DRIVER_NAME,
6080 .proc_name = LPFC_DRIVER_NAME,
6082 .queuecommand = lpfc_queuecommand,
6083 .eh_timed_out = fc_eh_timed_out,
6084 .eh_abort_handler = lpfc_abort_handler,
6085 .eh_device_reset_handler = lpfc_device_reset_handler,
6086 .eh_target_reset_handler = lpfc_target_reset_handler,
6087 .slave_alloc = lpfc_slave_alloc,
6088 .slave_configure = lpfc_slave_configure,
6089 .slave_destroy = lpfc_slave_destroy,
6090 .scan_finished = lpfc_scan_finished,
6092 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6093 .cmd_per_lun = LPFC_CMD_PER_LUN,
6094 .shost_attrs = lpfc_vport_attrs,
6095 .max_sectors = 0xFFFF,
6096 .change_queue_depth = scsi_change_queue_depth,
6097 .track_queue_depth = 1,