1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2014 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21 #include <linux/pci.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/export.h>
25 #include <linux/delay.h>
26 #include <asm/unaligned.h>
27 #include <linux/crc-t10dif.h>
28 #include <net/checksum.h>
30 #include <scsi/scsi.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_eh.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_tcq.h>
35 #include <scsi/scsi_transport_fc.h>
37 #include "lpfc_version.h"
41 #include "lpfc_sli4.h"
43 #include "lpfc_disc.h"
45 #include "lpfc_scsi.h"
46 #include "lpfc_logmsg.h"
47 #include "lpfc_crtn.h"
48 #include "lpfc_vport.h"
50 #define LPFC_RESET_WAIT 2
51 #define LPFC_ABORT_WAIT 2
53 int _dump_buf_done = 1;
55 static char *dif_op_str[] = {
65 struct scsi_dif_tuple {
66 __be16 guard_tag; /* Checksum */
67 __be16 app_tag; /* Opaque storage */
68 __be32 ref_tag; /* Target LBA or indirect LBA */
71 static struct lpfc_rport_data *
72 lpfc_rport_data_from_scsi_device(struct scsi_device *sdev)
74 struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata;
76 if (vport->phba->cfg_fof)
77 return ((struct lpfc_device_data *)sdev->hostdata)->rport_data;
79 return (struct lpfc_rport_data *)sdev->hostdata;
83 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
85 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
87 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
90 lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
93 struct scatterlist *sgde = scsi_sglist(cmnd);
95 if (!_dump_buf_data) {
96 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
97 "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
104 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
105 "9051 BLKGRD: ERROR: data scatterlist is null\n");
109 dst = (void *) _dump_buf_data;
112 memcpy(dst, src, sgde->length);
114 sgde = sg_next(sgde);
119 lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
122 struct scatterlist *sgde = scsi_prot_sglist(cmnd);
124 if (!_dump_buf_dif) {
125 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
126 "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
132 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
133 "9053 BLKGRD: ERROR: prot scatterlist is null\n");
140 memcpy(dst, src, sgde->length);
142 sgde = sg_next(sgde);
146 static inline unsigned
147 lpfc_cmd_blksize(struct scsi_cmnd *sc)
149 return sc->device->sector_size;
152 #define LPFC_CHECK_PROTECT_GUARD 1
153 #define LPFC_CHECK_PROTECT_REF 2
154 static inline unsigned
155 lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
160 static inline unsigned
161 lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
163 if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
165 if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
171 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
172 * @phba: Pointer to HBA object.
173 * @lpfc_cmd: lpfc scsi command object pointer.
175 * This function is called from the lpfc_prep_task_mgmt_cmd function to
176 * set the last bit in the response sge entry.
179 lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
180 struct lpfc_scsi_buf *lpfc_cmd)
182 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
185 sgl->word2 = le32_to_cpu(sgl->word2);
186 bf_set(lpfc_sli4_sge_last, sgl, 1);
187 sgl->word2 = cpu_to_le32(sgl->word2);
192 * lpfc_update_stats - Update statistical data for the command completion
193 * @phba: Pointer to HBA object.
194 * @lpfc_cmd: lpfc scsi command object pointer.
196 * This function is called when there is a command completion and this
197 * function updates the statistical data for the command completion.
200 lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
202 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
203 struct lpfc_nodelist *pnode = rdata->pnode;
204 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
206 struct Scsi_Host *shost = cmd->device->host;
207 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
208 unsigned long latency;
214 latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
216 spin_lock_irqsave(shost->host_lock, flags);
217 if (!vport->stat_data_enabled ||
218 vport->stat_data_blocked ||
221 (phba->bucket_type == LPFC_NO_BUCKET)) {
222 spin_unlock_irqrestore(shost->host_lock, flags);
226 if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
227 i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
229 /* check array subscript bounds */
232 else if (i >= LPFC_MAX_BUCKET_COUNT)
233 i = LPFC_MAX_BUCKET_COUNT - 1;
235 for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
236 if (latency <= (phba->bucket_base +
237 ((1<<i)*phba->bucket_step)))
241 pnode->lat_data[i].cmd_count++;
242 spin_unlock_irqrestore(shost->host_lock, flags);
246 * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
247 * @phba: Pointer to HBA context object.
248 * @vport: Pointer to vport object.
249 * @ndlp: Pointer to FC node associated with the target.
250 * @lun: Lun number of the scsi device.
251 * @old_val: Old value of the queue depth.
252 * @new_val: New value of the queue depth.
254 * This function sends an event to the mgmt application indicating
255 * there is a change in the scsi device queue depth.
258 lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba,
259 struct lpfc_vport *vport,
260 struct lpfc_nodelist *ndlp,
265 struct lpfc_fast_path_event *fast_path_evt;
268 fast_path_evt = lpfc_alloc_fast_evt(phba);
272 fast_path_evt->un.queue_depth_evt.scsi_event.event_type =
274 fast_path_evt->un.queue_depth_evt.scsi_event.subcategory =
275 LPFC_EVENT_VARQUEDEPTH;
277 /* Report all luns with change in queue depth */
278 fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun;
279 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
280 memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn,
281 &ndlp->nlp_portname, sizeof(struct lpfc_name));
282 memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn,
283 &ndlp->nlp_nodename, sizeof(struct lpfc_name));
286 fast_path_evt->un.queue_depth_evt.oldval = old_val;
287 fast_path_evt->un.queue_depth_evt.newval = new_val;
288 fast_path_evt->vport = vport;
290 fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
291 spin_lock_irqsave(&phba->hbalock, flags);
292 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
293 spin_unlock_irqrestore(&phba->hbalock, flags);
294 lpfc_worker_wake_up(phba);
300 * lpfc_change_queue_depth - Alter scsi device queue depth
301 * @sdev: Pointer the scsi device on which to change the queue depth.
302 * @qdepth: New queue depth to set the sdev to.
303 * @reason: The reason for the queue depth change.
305 * This function is called by the midlayer and the LLD to alter the queue
306 * depth for a scsi device. This function sets the queue depth to the new
307 * value and sends an event out to log the queue depth change.
310 lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
312 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
313 struct lpfc_hba *phba = vport->phba;
314 struct lpfc_rport_data *rdata;
315 unsigned long new_queue_depth, old_queue_depth;
317 old_queue_depth = sdev->queue_depth;
320 case SCSI_QDEPTH_DEFAULT:
321 /* change request from sysfs, fall through */
322 case SCSI_QDEPTH_RAMP_UP:
323 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
325 case SCSI_QDEPTH_QFULL:
326 if (scsi_track_queue_full(sdev, qdepth) == 0)
327 return sdev->queue_depth;
329 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
330 "0711 detected queue full - lun queue "
331 "depth adjusted to %d.\n", sdev->queue_depth);
337 new_queue_depth = sdev->queue_depth;
338 rdata = lpfc_rport_data_from_scsi_device(sdev);
340 lpfc_send_sdev_queuedepth_change_event(phba, vport,
341 rdata->pnode, sdev->lun,
344 return sdev->queue_depth;
348 * lpfc_change_queue_type() - Change a device's scsi tag queuing type
349 * @sdev: Pointer the scsi device whose queue depth is to change
350 * @tag_type: Identifier for queue tag type
353 lpfc_change_queue_type(struct scsi_device *sdev, int tag_type)
355 if (sdev->tagged_supported) {
356 scsi_set_tag_type(sdev, tag_type);
358 scsi_activate_tcq(sdev, sdev->queue_depth);
360 scsi_deactivate_tcq(sdev, sdev->queue_depth);
368 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
369 * @phba: The Hba for which this call is being executed.
371 * This routine is called when there is resource error in driver or firmware.
372 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
373 * posts at most 1 event each second. This routine wakes up worker thread of
374 * @phba to process WORKER_RAM_DOWN_EVENT event.
376 * This routine should be called with no lock held.
379 lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
383 unsigned long expires;
385 spin_lock_irqsave(&phba->hbalock, flags);
386 atomic_inc(&phba->num_rsrc_err);
387 phba->last_rsrc_error_time = jiffies;
389 expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL;
390 if (time_after(expires, jiffies)) {
391 spin_unlock_irqrestore(&phba->hbalock, flags);
395 phba->last_ramp_down_time = jiffies;
397 spin_unlock_irqrestore(&phba->hbalock, flags);
399 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
400 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
402 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
403 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
406 lpfc_worker_wake_up(phba);
411 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
412 * @phba: The Hba for which this call is being executed.
414 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
415 * thread.This routine reduces queue depth for all scsi device on each vport
416 * associated with @phba.
419 lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
421 struct lpfc_vport **vports;
422 struct Scsi_Host *shost;
423 struct scsi_device *sdev;
424 unsigned long new_queue_depth;
425 unsigned long num_rsrc_err, num_cmd_success;
428 num_rsrc_err = atomic_read(&phba->num_rsrc_err);
429 num_cmd_success = atomic_read(&phba->num_cmd_success);
432 * The error and success command counters are global per
433 * driver instance. If another handler has already
434 * operated on this error event, just exit.
436 if (num_rsrc_err == 0)
439 vports = lpfc_create_vport_work_array(phba);
441 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
442 shost = lpfc_shost_from_vport(vports[i]);
443 shost_for_each_device(sdev, shost) {
445 sdev->queue_depth * num_rsrc_err /
446 (num_rsrc_err + num_cmd_success);
447 if (!new_queue_depth)
448 new_queue_depth = sdev->queue_depth - 1;
450 new_queue_depth = sdev->queue_depth -
452 lpfc_change_queue_depth(sdev, new_queue_depth,
453 SCSI_QDEPTH_DEFAULT);
456 lpfc_destroy_vport_work_array(phba, vports);
457 atomic_set(&phba->num_rsrc_err, 0);
458 atomic_set(&phba->num_cmd_success, 0);
462 * lpfc_scsi_dev_block - set all scsi hosts to block state
463 * @phba: Pointer to HBA context object.
465 * This function walks vport list and set each SCSI host to block state
466 * by invoking fc_remote_port_delete() routine. This function is invoked
467 * with EEH when device's PCI slot has been permanently disabled.
470 lpfc_scsi_dev_block(struct lpfc_hba *phba)
472 struct lpfc_vport **vports;
473 struct Scsi_Host *shost;
474 struct scsi_device *sdev;
475 struct fc_rport *rport;
478 vports = lpfc_create_vport_work_array(phba);
480 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
481 shost = lpfc_shost_from_vport(vports[i]);
482 shost_for_each_device(sdev, shost) {
483 rport = starget_to_rport(scsi_target(sdev));
484 fc_remote_port_delete(rport);
487 lpfc_destroy_vport_work_array(phba, vports);
491 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
492 * @vport: The virtual port for which this call being executed.
493 * @num_to_allocate: The requested number of buffers to allocate.
495 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
496 * the scsi buffer contains all the necessary information needed to initiate
497 * a SCSI I/O. The non-DMAable buffer region contains information to build
498 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
499 * and the initial BPL. In addition to allocating memory, the FCP CMND and
500 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
503 * int - number of scsi buffers that were allocated.
504 * 0 = failure, less than num_to_alloc is a partial failure.
507 lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
509 struct lpfc_hba *phba = vport->phba;
510 struct lpfc_scsi_buf *psb;
511 struct ulp_bde64 *bpl;
513 dma_addr_t pdma_phys_fcp_cmd;
514 dma_addr_t pdma_phys_fcp_rsp;
515 dma_addr_t pdma_phys_bpl;
519 bpl_size = phba->cfg_sg_dma_buf_size -
520 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
522 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
523 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
524 num_to_alloc, phba->cfg_sg_dma_buf_size,
525 (int)sizeof(struct fcp_cmnd),
526 (int)sizeof(struct fcp_rsp), bpl_size);
528 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
529 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
534 * Get memory from the pci pool to map the virt space to pci
535 * bus space for an I/O. The DMA buffer includes space for the
536 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
537 * necessary to support the sg_tablesize.
539 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
540 GFP_KERNEL, &psb->dma_handle);
546 /* Initialize virtual ptrs to dma_buf region. */
547 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
549 /* Allocate iotag for psb->cur_iocbq. */
550 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
552 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
553 psb->data, psb->dma_handle);
557 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
559 psb->fcp_cmnd = psb->data;
560 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
561 psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
562 sizeof(struct fcp_rsp);
564 /* Initialize local short-hand pointers. */
566 pdma_phys_fcp_cmd = psb->dma_handle;
567 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
568 pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
569 sizeof(struct fcp_rsp);
572 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
573 * are sg list bdes. Initialize the first two and leave the
574 * rest for queuecommand.
576 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
577 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
578 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
579 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
580 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
582 /* Setup the physical region for the FCP RSP */
583 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
584 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
585 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
586 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
587 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
590 * Since the IOCB for the FCP I/O is built into this
591 * lpfc_scsi_buf, initialize it with all known data now.
593 iocb = &psb->cur_iocbq.iocb;
594 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
595 if ((phba->sli_rev == 3) &&
596 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
597 /* fill in immediate fcp command BDE */
598 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
599 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
600 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
602 iocb->un.fcpi64.bdl.addrHigh = 0;
603 iocb->ulpBdeCount = 0;
605 /* fill in response BDE */
606 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
608 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
609 sizeof(struct fcp_rsp);
610 iocb->unsli3.fcp_ext.rbde.addrLow =
611 putPaddrLow(pdma_phys_fcp_rsp);
612 iocb->unsli3.fcp_ext.rbde.addrHigh =
613 putPaddrHigh(pdma_phys_fcp_rsp);
615 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
616 iocb->un.fcpi64.bdl.bdeSize =
617 (2 * sizeof(struct ulp_bde64));
618 iocb->un.fcpi64.bdl.addrLow =
619 putPaddrLow(pdma_phys_bpl);
620 iocb->un.fcpi64.bdl.addrHigh =
621 putPaddrHigh(pdma_phys_bpl);
622 iocb->ulpBdeCount = 1;
625 iocb->ulpClass = CLASS3;
626 psb->status = IOSTAT_SUCCESS;
627 /* Put it back into the SCSI buffer list */
628 psb->cur_iocbq.context1 = psb;
629 lpfc_release_scsi_buf_s3(phba, psb);
637 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
638 * @vport: pointer to lpfc vport data structure.
640 * This routine is invoked by the vport cleanup for deletions and the cleanup
641 * for an ndlp on removal.
644 lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
646 struct lpfc_hba *phba = vport->phba;
647 struct lpfc_scsi_buf *psb, *next_psb;
648 unsigned long iflag = 0;
650 spin_lock_irqsave(&phba->hbalock, iflag);
651 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
652 list_for_each_entry_safe(psb, next_psb,
653 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
654 if (psb->rdata && psb->rdata->pnode
655 && psb->rdata->pnode->vport == vport)
658 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
659 spin_unlock_irqrestore(&phba->hbalock, iflag);
663 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
664 * @phba: pointer to lpfc hba data structure.
665 * @axri: pointer to the fcp xri abort wcqe structure.
667 * This routine is invoked by the worker thread to process a SLI4 fast-path
671 lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
672 struct sli4_wcqe_xri_aborted *axri)
674 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
675 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
676 struct lpfc_scsi_buf *psb, *next_psb;
677 unsigned long iflag = 0;
678 struct lpfc_iocbq *iocbq;
680 struct lpfc_nodelist *ndlp;
682 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
684 spin_lock_irqsave(&phba->hbalock, iflag);
685 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
686 list_for_each_entry_safe(psb, next_psb,
687 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
688 if (psb->cur_iocbq.sli4_xritag == xri) {
689 list_del(&psb->list);
691 psb->status = IOSTAT_SUCCESS;
693 &phba->sli4_hba.abts_scsi_buf_list_lock);
694 if (psb->rdata && psb->rdata->pnode)
695 ndlp = psb->rdata->pnode;
699 rrq_empty = list_empty(&phba->active_rrq_list);
700 spin_unlock_irqrestore(&phba->hbalock, iflag);
702 lpfc_set_rrq_active(phba, ndlp,
703 psb->cur_iocbq.sli4_lxritag, rxid, 1);
704 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
706 lpfc_release_scsi_buf_s4(phba, psb);
708 lpfc_worker_wake_up(phba);
712 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
713 for (i = 1; i <= phba->sli.last_iotag; i++) {
714 iocbq = phba->sli.iocbq_lookup[i];
716 if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
717 (iocbq->iocb_flag & LPFC_IO_LIBDFC))
719 if (iocbq->sli4_xritag != xri)
721 psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
723 spin_unlock_irqrestore(&phba->hbalock, iflag);
724 if (!list_empty(&pring->txq))
725 lpfc_worker_wake_up(phba);
729 spin_unlock_irqrestore(&phba->hbalock, iflag);
733 * lpfc_sli4_post_scsi_sgl_list - Psot blocks of scsi buffer sgls from a list
734 * @phba: pointer to lpfc hba data structure.
735 * @post_sblist: pointer to the scsi buffer list.
737 * This routine walks a list of scsi buffers that was passed in. It attempts
738 * to construct blocks of scsi buffer sgls which contains contiguous xris and
739 * uses the non-embedded SGL block post mailbox commands to post to the port.
740 * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use
741 * embedded SGL post mailbox command for posting. The @post_sblist passed in
742 * must be local list, thus no lock is needed when manipulate the list.
744 * Returns: 0 = failure, non-zero number of successfully posted buffers.
747 lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba,
748 struct list_head *post_sblist, int sb_count)
750 struct lpfc_scsi_buf *psb, *psb_next;
751 int status, sgl_size;
752 int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
753 dma_addr_t pdma_phys_bpl1;
754 int last_xritag = NO_XRI;
755 LIST_HEAD(prep_sblist);
756 LIST_HEAD(blck_sblist);
757 LIST_HEAD(scsi_sblist);
763 sgl_size = phba->cfg_sg_dma_buf_size -
764 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
766 list_for_each_entry_safe(psb, psb_next, post_sblist, list) {
767 list_del_init(&psb->list);
769 if ((last_xritag != NO_XRI) &&
770 (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) {
771 /* a hole in xri block, form a sgl posting block */
772 list_splice_init(&prep_sblist, &blck_sblist);
773 post_cnt = block_cnt - 1;
774 /* prepare list for next posting block */
775 list_add_tail(&psb->list, &prep_sblist);
778 /* prepare list for next posting block */
779 list_add_tail(&psb->list, &prep_sblist);
780 /* enough sgls for non-embed sgl mbox command */
781 if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
782 list_splice_init(&prep_sblist, &blck_sblist);
783 post_cnt = block_cnt;
788 last_xritag = psb->cur_iocbq.sli4_xritag;
790 /* end of repost sgl list condition for SCSI buffers */
791 if (num_posting == sb_count) {
793 /* last sgl posting block */
794 list_splice_init(&prep_sblist, &blck_sblist);
795 post_cnt = block_cnt;
796 } else if (block_cnt == 1) {
797 /* last single sgl with non-contiguous xri */
798 if (sgl_size > SGL_PAGE_SIZE)
799 pdma_phys_bpl1 = psb->dma_phys_bpl +
803 status = lpfc_sli4_post_sgl(phba,
806 psb->cur_iocbq.sli4_xritag);
808 /* failure, put on abort scsi list */
811 /* success, put on SCSI buffer list */
813 psb->status = IOSTAT_SUCCESS;
816 /* success, put on SCSI buffer sgl list */
817 list_add_tail(&psb->list, &scsi_sblist);
821 /* continue until a nembed page worth of sgls */
825 /* post block of SCSI buffer list sgls */
826 status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist,
829 /* don't reset xirtag due to hole in xri block */
831 last_xritag = NO_XRI;
833 /* reset SCSI buffer post count for next round of posting */
836 /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */
837 while (!list_empty(&blck_sblist)) {
838 list_remove_head(&blck_sblist, psb,
839 struct lpfc_scsi_buf, list);
841 /* failure, put on abort scsi list */
844 /* success, put on SCSI buffer list */
846 psb->status = IOSTAT_SUCCESS;
849 list_add_tail(&psb->list, &scsi_sblist);
852 /* Push SCSI buffers with sgl posted to the availble list */
853 while (!list_empty(&scsi_sblist)) {
854 list_remove_head(&scsi_sblist, psb,
855 struct lpfc_scsi_buf, list);
856 lpfc_release_scsi_buf_s4(phba, psb);
862 * lpfc_sli4_repost_scsi_sgl_list - Repsot all the allocated scsi buffer sgls
863 * @phba: pointer to lpfc hba data structure.
865 * This routine walks the list of scsi buffers that have been allocated and
866 * repost them to the port by using SGL block post. This is needed after a
867 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
868 * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
869 * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
871 * Returns: 0 = success, non-zero failure.
874 lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
876 LIST_HEAD(post_sblist);
877 int num_posted, rc = 0;
879 /* get all SCSI buffers need to repost to a local list */
880 spin_lock_irq(&phba->scsi_buf_list_get_lock);
881 spin_lock(&phba->scsi_buf_list_put_lock);
882 list_splice_init(&phba->lpfc_scsi_buf_list_get, &post_sblist);
883 list_splice(&phba->lpfc_scsi_buf_list_put, &post_sblist);
884 spin_unlock(&phba->scsi_buf_list_put_lock);
885 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
887 /* post the list of scsi buffer sgls to port if available */
888 if (!list_empty(&post_sblist)) {
889 num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist,
890 phba->sli4_hba.scsi_xri_cnt);
891 /* failed to post any scsi buffer, return error */
899 * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
900 * @vport: The virtual port for which this call being executed.
901 * @num_to_allocate: The requested number of buffers to allocate.
903 * This routine allocates scsi buffers for device with SLI-4 interface spec,
904 * the scsi buffer contains all the necessary information needed to initiate
905 * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put
906 * them on a list, it post them to the port by using SGL block post.
909 * int - number of scsi buffers that were allocated and posted.
910 * 0 = failure, less than num_to_alloc is a partial failure.
913 lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
915 struct lpfc_hba *phba = vport->phba;
916 struct lpfc_scsi_buf *psb;
917 struct sli4_sge *sgl;
919 dma_addr_t pdma_phys_fcp_cmd;
920 dma_addr_t pdma_phys_fcp_rsp;
921 dma_addr_t pdma_phys_bpl;
922 uint16_t iotag, lxri = 0;
923 int bcnt, num_posted, sgl_size;
924 LIST_HEAD(prep_sblist);
925 LIST_HEAD(post_sblist);
926 LIST_HEAD(scsi_sblist);
928 sgl_size = phba->cfg_sg_dma_buf_size -
929 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
931 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
932 "9068 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
933 num_to_alloc, phba->cfg_sg_dma_buf_size, sgl_size,
934 (int)sizeof(struct fcp_cmnd),
935 (int)sizeof(struct fcp_rsp));
937 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
938 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
942 * Get memory from the pci pool to map the virt space to
943 * pci bus space for an I/O. The DMA buffer includes space
944 * for the struct fcp_cmnd, struct fcp_rsp and the number
945 * of bde's necessary to support the sg_tablesize.
947 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
948 GFP_KERNEL, &psb->dma_handle);
953 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
956 * 4K Page alignment is CRITICAL to BlockGuard, double check
959 if (phba->cfg_enable_bg && (((unsigned long)(psb->data) &
960 (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
961 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
962 psb->data, psb->dma_handle);
968 lxri = lpfc_sli4_next_xritag(phba);
969 if (lxri == NO_XRI) {
970 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
971 psb->data, psb->dma_handle);
976 /* Allocate iotag for psb->cur_iocbq. */
977 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
979 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
980 psb->data, psb->dma_handle);
982 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
983 "3368 Failed to allocated IOTAG for"
984 " XRI:0x%x\n", lxri);
985 lpfc_sli4_free_xri(phba, lxri);
988 psb->cur_iocbq.sli4_lxritag = lxri;
989 psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
990 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
991 psb->fcp_bpl = psb->data;
992 psb->fcp_cmnd = (psb->data + sgl_size);
993 psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd +
994 sizeof(struct fcp_cmnd));
996 /* Initialize local short-hand pointers. */
997 sgl = (struct sli4_sge *)psb->fcp_bpl;
998 pdma_phys_bpl = psb->dma_handle;
999 pdma_phys_fcp_cmd = (psb->dma_handle + sgl_size);
1000 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
1003 * The first two bdes are the FCP_CMD and FCP_RSP.
1004 * The balance are sg list bdes. Initialize the
1005 * first two and leave the rest for queuecommand.
1007 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
1008 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
1009 sgl->word2 = le32_to_cpu(sgl->word2);
1010 bf_set(lpfc_sli4_sge_last, sgl, 0);
1011 sgl->word2 = cpu_to_le32(sgl->word2);
1012 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
1015 /* Setup the physical region for the FCP RSP */
1016 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
1017 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
1018 sgl->word2 = le32_to_cpu(sgl->word2);
1019 bf_set(lpfc_sli4_sge_last, sgl, 1);
1020 sgl->word2 = cpu_to_le32(sgl->word2);
1021 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
1024 * Since the IOCB for the FCP I/O is built into this
1025 * lpfc_scsi_buf, initialize it with all known data now.
1027 iocb = &psb->cur_iocbq.iocb;
1028 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
1029 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
1030 /* setting the BLP size to 2 * sizeof BDE may not be correct.
1031 * We are setting the bpl to point to out sgl. An sgl's
1032 * entries are 16 bytes, a bpl entries are 12 bytes.
1034 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
1035 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
1036 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
1037 iocb->ulpBdeCount = 1;
1039 iocb->ulpClass = CLASS3;
1040 psb->cur_iocbq.context1 = psb;
1041 psb->dma_phys_bpl = pdma_phys_bpl;
1043 /* add the scsi buffer to a post list */
1044 list_add_tail(&psb->list, &post_sblist);
1045 spin_lock_irq(&phba->scsi_buf_list_get_lock);
1046 phba->sli4_hba.scsi_xri_cnt++;
1047 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
1049 lpfc_printf_log(phba, KERN_INFO, LOG_BG,
1050 "3021 Allocate %d out of %d requested new SCSI "
1051 "buffers\n", bcnt, num_to_alloc);
1053 /* post the list of scsi buffer sgls to port if available */
1054 if (!list_empty(&post_sblist))
1055 num_posted = lpfc_sli4_post_scsi_sgl_list(phba,
1056 &post_sblist, bcnt);
1064 * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
1065 * @vport: The virtual port for which this call being executed.
1066 * @num_to_allocate: The requested number of buffers to allocate.
1068 * This routine wraps the actual SCSI buffer allocator function pointer from
1069 * the lpfc_hba struct.
1072 * int - number of scsi buffers that were allocated.
1073 * 0 = failure, less than num_to_alloc is a partial failure.
1076 lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
1078 return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc);
1082 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1083 * @phba: The HBA for which this call is being executed.
1085 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1086 * and returns to caller.
1090 * Pointer to lpfc_scsi_buf - Success
1092 static struct lpfc_scsi_buf*
1093 lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1095 struct lpfc_scsi_buf * lpfc_cmd = NULL;
1096 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
1097 unsigned long iflag = 0;
1099 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
1100 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_scsi_buf,
1103 spin_lock(&phba->scsi_buf_list_put_lock);
1104 list_splice(&phba->lpfc_scsi_buf_list_put,
1105 &phba->lpfc_scsi_buf_list_get);
1106 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
1107 list_remove_head(scsi_buf_list_get, lpfc_cmd,
1108 struct lpfc_scsi_buf, list);
1109 spin_unlock(&phba->scsi_buf_list_put_lock);
1111 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
1115 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1116 * @phba: The HBA for which this call is being executed.
1118 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1119 * and returns to caller.
1123 * Pointer to lpfc_scsi_buf - Success
1125 static struct lpfc_scsi_buf*
1126 lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1128 struct lpfc_scsi_buf *lpfc_cmd, *lpfc_cmd_next;
1129 unsigned long iflag = 0;
1132 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
1133 list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
1134 &phba->lpfc_scsi_buf_list_get, list) {
1135 if (lpfc_test_rrq_active(phba, ndlp,
1136 lpfc_cmd->cur_iocbq.sli4_lxritag))
1138 list_del(&lpfc_cmd->list);
1143 spin_lock(&phba->scsi_buf_list_put_lock);
1144 list_splice(&phba->lpfc_scsi_buf_list_put,
1145 &phba->lpfc_scsi_buf_list_get);
1146 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
1147 spin_unlock(&phba->scsi_buf_list_put_lock);
1148 list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
1149 &phba->lpfc_scsi_buf_list_get, list) {
1150 if (lpfc_test_rrq_active(
1151 phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag))
1153 list_del(&lpfc_cmd->list);
1158 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
1164 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1165 * @phba: The HBA for which this call is being executed.
1167 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1168 * and returns to caller.
1172 * Pointer to lpfc_scsi_buf - Success
1174 static struct lpfc_scsi_buf*
1175 lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1177 return phba->lpfc_get_scsi_buf(phba, ndlp);
1181 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
1182 * @phba: The Hba for which this call is being executed.
1183 * @psb: The scsi buffer which is being released.
1185 * This routine releases @psb scsi buffer by adding it to tail of @phba
1186 * lpfc_scsi_buf_list list.
1189 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1191 unsigned long iflag = 0;
1194 psb->nonsg_phys = 0;
1195 psb->prot_seg_cnt = 0;
1197 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1199 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
1200 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1201 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
1205 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
1206 * @phba: The Hba for which this call is being executed.
1207 * @psb: The scsi buffer which is being released.
1209 * This routine releases @psb scsi buffer by adding it to tail of @phba
1210 * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer
1211 * and cannot be reused for at least RA_TOV amount of time if it was
1215 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1217 unsigned long iflag = 0;
1220 psb->nonsg_phys = 0;
1221 psb->prot_seg_cnt = 0;
1223 if (psb->exch_busy) {
1224 spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
1227 list_add_tail(&psb->list,
1228 &phba->sli4_hba.lpfc_abts_scsi_buf_list);
1229 spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
1233 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
1234 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1235 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1236 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
1241 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
1242 * @phba: The Hba for which this call is being executed.
1243 * @psb: The scsi buffer which is being released.
1245 * This routine releases @psb scsi buffer by adding it to tail of @phba
1246 * lpfc_scsi_buf_list list.
1249 lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1252 phba->lpfc_release_scsi_buf(phba, psb);
1256 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
1257 * @phba: The Hba for which this call is being executed.
1258 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1260 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
1261 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
1262 * through sg elements and format the bdea. This routine also initializes all
1263 * IOCB fields which are dependent on scsi command request buffer.
1270 lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
1272 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
1273 struct scatterlist *sgel = NULL;
1274 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
1275 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
1276 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
1277 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
1278 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
1279 dma_addr_t physaddr;
1280 uint32_t num_bde = 0;
1281 int nseg, datadir = scsi_cmnd->sc_data_direction;
1284 * There are three possibilities here - use scatter-gather segment, use
1285 * the single mapping, or neither. Start the lpfc command prep by
1286 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1290 if (scsi_sg_count(scsi_cmnd)) {
1292 * The driver stores the segment count returned from pci_map_sg
1293 * because this a count of dma-mappings used to map the use_sg
1294 * pages. They are not guaranteed to be the same for those
1295 * architectures that implement an IOMMU.
1298 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
1299 scsi_sg_count(scsi_cmnd), datadir);
1300 if (unlikely(!nseg))
1303 lpfc_cmd->seg_cnt = nseg;
1304 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
1305 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1306 "9064 BLKGRD: %s: Too many sg segments from "
1307 "dma_map_sg. Config %d, seg_cnt %d\n",
1308 __func__, phba->cfg_sg_seg_cnt,
1310 lpfc_cmd->seg_cnt = 0;
1311 scsi_dma_unmap(scsi_cmnd);
1316 * The driver established a maximum scatter-gather segment count
1317 * during probe that limits the number of sg elements in any
1318 * single scsi command. Just run through the seg_cnt and format
1320 * When using SLI-3 the driver will try to fit all the BDEs into
1321 * the IOCB. If it can't then the BDEs get added to a BPL as it
1322 * does for SLI-2 mode.
1324 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
1325 physaddr = sg_dma_address(sgel);
1326 if (phba->sli_rev == 3 &&
1327 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
1328 !(iocbq->iocb_flag & DSS_SECURITY_OP) &&
1329 nseg <= LPFC_EXT_DATA_BDE_COUNT) {
1330 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1331 data_bde->tus.f.bdeSize = sg_dma_len(sgel);
1332 data_bde->addrLow = putPaddrLow(physaddr);
1333 data_bde->addrHigh = putPaddrHigh(physaddr);
1336 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1337 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1338 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1340 le32_to_cpu(putPaddrLow(physaddr));
1342 le32_to_cpu(putPaddrHigh(physaddr));
1349 * Finish initializing those IOCB fields that are dependent on the
1350 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1351 * explicitly reinitialized and for SLI-3 the extended bde count is
1352 * explicitly reinitialized since all iocb memory resources are reused.
1354 if (phba->sli_rev == 3 &&
1355 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
1356 !(iocbq->iocb_flag & DSS_SECURITY_OP)) {
1357 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
1359 * The extended IOCB format can only fit 3 BDE or a BPL.
1360 * This I/O has more than 3 BDE so the 1st data bde will
1361 * be a BPL that is filled in here.
1363 physaddr = lpfc_cmd->dma_handle;
1364 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
1365 data_bde->tus.f.bdeSize = (num_bde *
1366 sizeof(struct ulp_bde64));
1367 physaddr += (sizeof(struct fcp_cmnd) +
1368 sizeof(struct fcp_rsp) +
1369 (2 * sizeof(struct ulp_bde64)));
1370 data_bde->addrHigh = putPaddrHigh(physaddr);
1371 data_bde->addrLow = putPaddrLow(physaddr);
1372 /* ebde count includes the response bde and data bpl */
1373 iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
1375 /* ebde count includes the response bde and data bdes */
1376 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
1379 iocb_cmd->un.fcpi64.bdl.bdeSize =
1380 ((num_bde + 2) * sizeof(struct ulp_bde64));
1381 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
1383 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
1386 * Due to difference in data length between DIF/non-DIF paths,
1387 * we need to set word 4 of IOCB here
1389 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
1393 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1395 /* Return if if error injection is detected by Initiator */
1396 #define BG_ERR_INIT 0x1
1397 /* Return if if error injection is detected by Target */
1398 #define BG_ERR_TGT 0x2
1399 /* Return if if swapping CSUM<-->CRC is required for error injection */
1400 #define BG_ERR_SWAP 0x10
1401 /* Return if disabling Guard/Ref/App checking is required for error injection */
1402 #define BG_ERR_CHECK 0x20
1405 * lpfc_bg_err_inject - Determine if we should inject an error
1406 * @phba: The Hba for which this call is being executed.
1407 * @sc: The SCSI command to examine
1408 * @reftag: (out) BlockGuard reference tag for transmitted data
1409 * @apptag: (out) BlockGuard application tag for transmitted data
1410 * @new_guard (in) Value to replace CRC with if needed
1412 * Returns BG_ERR_* bit mask or 0 if request ignored
1415 lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1416 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
1418 struct scatterlist *sgpe; /* s/g prot entry */
1419 struct scatterlist *sgde; /* s/g data entry */
1420 struct lpfc_scsi_buf *lpfc_cmd = NULL;
1421 struct scsi_dif_tuple *src = NULL;
1422 struct lpfc_nodelist *ndlp;
1423 struct lpfc_rport_data *rdata;
1424 uint32_t op = scsi_get_prot_op(sc);
1431 if (op == SCSI_PROT_NORMAL)
1434 sgpe = scsi_prot_sglist(sc);
1435 sgde = scsi_sglist(sc);
1436 lba = scsi_get_lba(sc);
1438 /* First check if we need to match the LBA */
1439 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
1440 blksize = lpfc_cmd_blksize(sc);
1441 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
1443 /* Make sure we have the right LBA if one is specified */
1444 if ((phba->lpfc_injerr_lba < lba) ||
1445 (phba->lpfc_injerr_lba >= (lba + numblks)))
1448 blockoff = phba->lpfc_injerr_lba - lba;
1449 numblks = sg_dma_len(sgpe) /
1450 sizeof(struct scsi_dif_tuple);
1451 if (numblks < blockoff)
1456 /* Next check if we need to match the remote NPortID or WWPN */
1457 rdata = lpfc_rport_data_from_scsi_device(sc->device);
1458 if (rdata && rdata->pnode) {
1459 ndlp = rdata->pnode;
1461 /* Make sure we have the right NPortID if one is specified */
1462 if (phba->lpfc_injerr_nportid &&
1463 (phba->lpfc_injerr_nportid != ndlp->nlp_DID))
1467 * Make sure we have the right WWPN if one is specified.
1468 * wwn[0] should be a non-zero NAA in a good WWPN.
1470 if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
1471 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
1472 sizeof(struct lpfc_name)) != 0))
1476 /* Setup a ptr to the protection data if the SCSI host provides it */
1478 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
1480 lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble;
1483 /* Should we change the Reference Tag */
1485 if (phba->lpfc_injerr_wref_cnt) {
1487 case SCSI_PROT_WRITE_PASS:
1490 * For WRITE_PASS, force the error
1491 * to be sent on the wire. It should
1492 * be detected by the Target.
1493 * If blockoff != 0 error will be
1494 * inserted in middle of the IO.
1497 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1498 "9076 BLKGRD: Injecting reftag error: "
1499 "write lba x%lx + x%x oldrefTag x%x\n",
1500 (unsigned long)lba, blockoff,
1501 be32_to_cpu(src->ref_tag));
1504 * Save the old ref_tag so we can
1505 * restore it on completion.
1508 lpfc_cmd->prot_data_type =
1510 lpfc_cmd->prot_data_segment =
1512 lpfc_cmd->prot_data =
1515 src->ref_tag = cpu_to_be32(0xDEADBEEF);
1516 phba->lpfc_injerr_wref_cnt--;
1517 if (phba->lpfc_injerr_wref_cnt == 0) {
1518 phba->lpfc_injerr_nportid = 0;
1519 phba->lpfc_injerr_lba =
1520 LPFC_INJERR_LBA_OFF;
1521 memset(&phba->lpfc_injerr_wwpn,
1522 0, sizeof(struct lpfc_name));
1524 rc = BG_ERR_TGT | BG_ERR_CHECK;
1529 case SCSI_PROT_WRITE_INSERT:
1531 * For WRITE_INSERT, force the error
1532 * to be sent on the wire. It should be
1533 * detected by the Target.
1535 /* DEADBEEF will be the reftag on the wire */
1536 *reftag = 0xDEADBEEF;
1537 phba->lpfc_injerr_wref_cnt--;
1538 if (phba->lpfc_injerr_wref_cnt == 0) {
1539 phba->lpfc_injerr_nportid = 0;
1540 phba->lpfc_injerr_lba =
1541 LPFC_INJERR_LBA_OFF;
1542 memset(&phba->lpfc_injerr_wwpn,
1543 0, sizeof(struct lpfc_name));
1545 rc = BG_ERR_TGT | BG_ERR_CHECK;
1547 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1548 "9078 BLKGRD: Injecting reftag error: "
1549 "write lba x%lx\n", (unsigned long)lba);
1551 case SCSI_PROT_WRITE_STRIP:
1553 * For WRITE_STRIP and WRITE_PASS,
1554 * force the error on data
1555 * being copied from SLI-Host to SLI-Port.
1557 *reftag = 0xDEADBEEF;
1558 phba->lpfc_injerr_wref_cnt--;
1559 if (phba->lpfc_injerr_wref_cnt == 0) {
1560 phba->lpfc_injerr_nportid = 0;
1561 phba->lpfc_injerr_lba =
1562 LPFC_INJERR_LBA_OFF;
1563 memset(&phba->lpfc_injerr_wwpn,
1564 0, sizeof(struct lpfc_name));
1568 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1569 "9077 BLKGRD: Injecting reftag error: "
1570 "write lba x%lx\n", (unsigned long)lba);
1574 if (phba->lpfc_injerr_rref_cnt) {
1576 case SCSI_PROT_READ_INSERT:
1577 case SCSI_PROT_READ_STRIP:
1578 case SCSI_PROT_READ_PASS:
1580 * For READ_STRIP and READ_PASS, force the
1581 * error on data being read off the wire. It
1582 * should force an IO error to the driver.
1584 *reftag = 0xDEADBEEF;
1585 phba->lpfc_injerr_rref_cnt--;
1586 if (phba->lpfc_injerr_rref_cnt == 0) {
1587 phba->lpfc_injerr_nportid = 0;
1588 phba->lpfc_injerr_lba =
1589 LPFC_INJERR_LBA_OFF;
1590 memset(&phba->lpfc_injerr_wwpn,
1591 0, sizeof(struct lpfc_name));
1595 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1596 "9079 BLKGRD: Injecting reftag error: "
1597 "read lba x%lx\n", (unsigned long)lba);
1603 /* Should we change the Application Tag */
1605 if (phba->lpfc_injerr_wapp_cnt) {
1607 case SCSI_PROT_WRITE_PASS:
1610 * For WRITE_PASS, force the error
1611 * to be sent on the wire. It should
1612 * be detected by the Target.
1613 * If blockoff != 0 error will be
1614 * inserted in middle of the IO.
1617 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1618 "9080 BLKGRD: Injecting apptag error: "
1619 "write lba x%lx + x%x oldappTag x%x\n",
1620 (unsigned long)lba, blockoff,
1621 be16_to_cpu(src->app_tag));
1624 * Save the old app_tag so we can
1625 * restore it on completion.
1628 lpfc_cmd->prot_data_type =
1630 lpfc_cmd->prot_data_segment =
1632 lpfc_cmd->prot_data =
1635 src->app_tag = cpu_to_be16(0xDEAD);
1636 phba->lpfc_injerr_wapp_cnt--;
1637 if (phba->lpfc_injerr_wapp_cnt == 0) {
1638 phba->lpfc_injerr_nportid = 0;
1639 phba->lpfc_injerr_lba =
1640 LPFC_INJERR_LBA_OFF;
1641 memset(&phba->lpfc_injerr_wwpn,
1642 0, sizeof(struct lpfc_name));
1644 rc = BG_ERR_TGT | BG_ERR_CHECK;
1648 case SCSI_PROT_WRITE_INSERT:
1650 * For WRITE_INSERT, force the
1651 * error to be sent on the wire. It should be
1652 * detected by the Target.
1654 /* DEAD will be the apptag on the wire */
1656 phba->lpfc_injerr_wapp_cnt--;
1657 if (phba->lpfc_injerr_wapp_cnt == 0) {
1658 phba->lpfc_injerr_nportid = 0;
1659 phba->lpfc_injerr_lba =
1660 LPFC_INJERR_LBA_OFF;
1661 memset(&phba->lpfc_injerr_wwpn,
1662 0, sizeof(struct lpfc_name));
1664 rc = BG_ERR_TGT | BG_ERR_CHECK;
1666 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1667 "0813 BLKGRD: Injecting apptag error: "
1668 "write lba x%lx\n", (unsigned long)lba);
1670 case SCSI_PROT_WRITE_STRIP:
1672 * For WRITE_STRIP and WRITE_PASS,
1673 * force the error on data
1674 * being copied from SLI-Host to SLI-Port.
1677 phba->lpfc_injerr_wapp_cnt--;
1678 if (phba->lpfc_injerr_wapp_cnt == 0) {
1679 phba->lpfc_injerr_nportid = 0;
1680 phba->lpfc_injerr_lba =
1681 LPFC_INJERR_LBA_OFF;
1682 memset(&phba->lpfc_injerr_wwpn,
1683 0, sizeof(struct lpfc_name));
1687 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1688 "0812 BLKGRD: Injecting apptag error: "
1689 "write lba x%lx\n", (unsigned long)lba);
1693 if (phba->lpfc_injerr_rapp_cnt) {
1695 case SCSI_PROT_READ_INSERT:
1696 case SCSI_PROT_READ_STRIP:
1697 case SCSI_PROT_READ_PASS:
1699 * For READ_STRIP and READ_PASS, force the
1700 * error on data being read off the wire. It
1701 * should force an IO error to the driver.
1704 phba->lpfc_injerr_rapp_cnt--;
1705 if (phba->lpfc_injerr_rapp_cnt == 0) {
1706 phba->lpfc_injerr_nportid = 0;
1707 phba->lpfc_injerr_lba =
1708 LPFC_INJERR_LBA_OFF;
1709 memset(&phba->lpfc_injerr_wwpn,
1710 0, sizeof(struct lpfc_name));
1714 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1715 "0814 BLKGRD: Injecting apptag error: "
1716 "read lba x%lx\n", (unsigned long)lba);
1723 /* Should we change the Guard Tag */
1725 if (phba->lpfc_injerr_wgrd_cnt) {
1727 case SCSI_PROT_WRITE_PASS:
1731 case SCSI_PROT_WRITE_INSERT:
1733 * For WRITE_INSERT, force the
1734 * error to be sent on the wire. It should be
1735 * detected by the Target.
1737 phba->lpfc_injerr_wgrd_cnt--;
1738 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1739 phba->lpfc_injerr_nportid = 0;
1740 phba->lpfc_injerr_lba =
1741 LPFC_INJERR_LBA_OFF;
1742 memset(&phba->lpfc_injerr_wwpn,
1743 0, sizeof(struct lpfc_name));
1746 rc |= BG_ERR_TGT | BG_ERR_SWAP;
1747 /* Signals the caller to swap CRC->CSUM */
1749 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1750 "0817 BLKGRD: Injecting guard error: "
1751 "write lba x%lx\n", (unsigned long)lba);
1753 case SCSI_PROT_WRITE_STRIP:
1755 * For WRITE_STRIP and WRITE_PASS,
1756 * force the error on data
1757 * being copied from SLI-Host to SLI-Port.
1759 phba->lpfc_injerr_wgrd_cnt--;
1760 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1761 phba->lpfc_injerr_nportid = 0;
1762 phba->lpfc_injerr_lba =
1763 LPFC_INJERR_LBA_OFF;
1764 memset(&phba->lpfc_injerr_wwpn,
1765 0, sizeof(struct lpfc_name));
1768 rc = BG_ERR_INIT | BG_ERR_SWAP;
1769 /* Signals the caller to swap CRC->CSUM */
1771 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1772 "0816 BLKGRD: Injecting guard error: "
1773 "write lba x%lx\n", (unsigned long)lba);
1777 if (phba->lpfc_injerr_rgrd_cnt) {
1779 case SCSI_PROT_READ_INSERT:
1780 case SCSI_PROT_READ_STRIP:
1781 case SCSI_PROT_READ_PASS:
1783 * For READ_STRIP and READ_PASS, force the
1784 * error on data being read off the wire. It
1785 * should force an IO error to the driver.
1787 phba->lpfc_injerr_rgrd_cnt--;
1788 if (phba->lpfc_injerr_rgrd_cnt == 0) {
1789 phba->lpfc_injerr_nportid = 0;
1790 phba->lpfc_injerr_lba =
1791 LPFC_INJERR_LBA_OFF;
1792 memset(&phba->lpfc_injerr_wwpn,
1793 0, sizeof(struct lpfc_name));
1796 rc = BG_ERR_INIT | BG_ERR_SWAP;
1797 /* Signals the caller to swap CRC->CSUM */
1799 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1800 "0818 BLKGRD: Injecting guard error: "
1801 "read lba x%lx\n", (unsigned long)lba);
1811 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
1812 * the specified SCSI command.
1813 * @phba: The Hba for which this call is being executed.
1814 * @sc: The SCSI command to examine
1815 * @txopt: (out) BlockGuard operation for transmitted data
1816 * @rxopt: (out) BlockGuard operation for received data
1818 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1822 lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1823 uint8_t *txop, uint8_t *rxop)
1827 if (lpfc_cmd_guard_csum(sc)) {
1828 switch (scsi_get_prot_op(sc)) {
1829 case SCSI_PROT_READ_INSERT:
1830 case SCSI_PROT_WRITE_STRIP:
1831 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
1832 *txop = BG_OP_IN_CSUM_OUT_NODIF;
1835 case SCSI_PROT_READ_STRIP:
1836 case SCSI_PROT_WRITE_INSERT:
1837 *rxop = BG_OP_IN_CRC_OUT_NODIF;
1838 *txop = BG_OP_IN_NODIF_OUT_CRC;
1841 case SCSI_PROT_READ_PASS:
1842 case SCSI_PROT_WRITE_PASS:
1843 *rxop = BG_OP_IN_CRC_OUT_CSUM;
1844 *txop = BG_OP_IN_CSUM_OUT_CRC;
1847 case SCSI_PROT_NORMAL:
1849 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1850 "9063 BLKGRD: Bad op/guard:%d/IP combination\n",
1851 scsi_get_prot_op(sc));
1857 switch (scsi_get_prot_op(sc)) {
1858 case SCSI_PROT_READ_STRIP:
1859 case SCSI_PROT_WRITE_INSERT:
1860 *rxop = BG_OP_IN_CRC_OUT_NODIF;
1861 *txop = BG_OP_IN_NODIF_OUT_CRC;
1864 case SCSI_PROT_READ_PASS:
1865 case SCSI_PROT_WRITE_PASS:
1866 *rxop = BG_OP_IN_CRC_OUT_CRC;
1867 *txop = BG_OP_IN_CRC_OUT_CRC;
1870 case SCSI_PROT_READ_INSERT:
1871 case SCSI_PROT_WRITE_STRIP:
1872 *rxop = BG_OP_IN_NODIF_OUT_CRC;
1873 *txop = BG_OP_IN_CRC_OUT_NODIF;
1876 case SCSI_PROT_NORMAL:
1878 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1879 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
1880 scsi_get_prot_op(sc));
1889 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1891 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
1892 * the specified SCSI command in order to force a guard tag error.
1893 * @phba: The Hba for which this call is being executed.
1894 * @sc: The SCSI command to examine
1895 * @txopt: (out) BlockGuard operation for transmitted data
1896 * @rxopt: (out) BlockGuard operation for received data
1898 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1902 lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1903 uint8_t *txop, uint8_t *rxop)
1907 if (lpfc_cmd_guard_csum(sc)) {
1908 switch (scsi_get_prot_op(sc)) {
1909 case SCSI_PROT_READ_INSERT:
1910 case SCSI_PROT_WRITE_STRIP:
1911 *rxop = BG_OP_IN_NODIF_OUT_CRC;
1912 *txop = BG_OP_IN_CRC_OUT_NODIF;
1915 case SCSI_PROT_READ_STRIP:
1916 case SCSI_PROT_WRITE_INSERT:
1917 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
1918 *txop = BG_OP_IN_NODIF_OUT_CSUM;
1921 case SCSI_PROT_READ_PASS:
1922 case SCSI_PROT_WRITE_PASS:
1923 *rxop = BG_OP_IN_CSUM_OUT_CRC;
1924 *txop = BG_OP_IN_CRC_OUT_CSUM;
1927 case SCSI_PROT_NORMAL:
1933 switch (scsi_get_prot_op(sc)) {
1934 case SCSI_PROT_READ_STRIP:
1935 case SCSI_PROT_WRITE_INSERT:
1936 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
1937 *txop = BG_OP_IN_NODIF_OUT_CSUM;
1940 case SCSI_PROT_READ_PASS:
1941 case SCSI_PROT_WRITE_PASS:
1942 *rxop = BG_OP_IN_CSUM_OUT_CSUM;
1943 *txop = BG_OP_IN_CSUM_OUT_CSUM;
1946 case SCSI_PROT_READ_INSERT:
1947 case SCSI_PROT_WRITE_STRIP:
1948 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
1949 *txop = BG_OP_IN_CSUM_OUT_NODIF;
1952 case SCSI_PROT_NORMAL:
1963 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
1964 * @phba: The Hba for which this call is being executed.
1965 * @sc: pointer to scsi command we're working on
1966 * @bpl: pointer to buffer list for protection groups
1967 * @datacnt: number of segments of data that have been dma mapped
1969 * This function sets up BPL buffer list for protection groups of
1970 * type LPFC_PG_TYPE_NO_DIF
1972 * This is usually used when the HBA is instructed to generate
1973 * DIFs and insert them into data stream (or strip DIF from
1974 * incoming data stream)
1976 * The buffer list consists of just one protection group described
1978 * +-------------------------+
1979 * start of prot group --> | PDE_5 |
1980 * +-------------------------+
1982 * +-------------------------+
1984 * +-------------------------+
1985 * |more Data BDE's ... (opt)|
1986 * +-------------------------+
1989 * Note: Data s/g buffers have been dma mapped
1991 * Returns the number of BDEs added to the BPL.
1994 lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1995 struct ulp_bde64 *bpl, int datasegcnt)
1997 struct scatterlist *sgde = NULL; /* s/g data entry */
1998 struct lpfc_pde5 *pde5 = NULL;
1999 struct lpfc_pde6 *pde6 = NULL;
2000 dma_addr_t physaddr;
2001 int i = 0, num_bde = 0, status;
2002 int datadir = sc->sc_data_direction;
2003 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2006 uint32_t checking = 1;
2011 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2015 /* extract some info from the scsi command for pde*/
2016 blksize = lpfc_cmd_blksize(sc);
2017 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2019 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2020 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2022 if (rc & BG_ERR_SWAP)
2023 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2024 if (rc & BG_ERR_CHECK)
2029 /* setup PDE5 with what we have */
2030 pde5 = (struct lpfc_pde5 *) bpl;
2031 memset(pde5, 0, sizeof(struct lpfc_pde5));
2032 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
2034 /* Endianness conversion if necessary for PDE5 */
2035 pde5->word0 = cpu_to_le32(pde5->word0);
2036 pde5->reftag = cpu_to_le32(reftag);
2038 /* advance bpl and increment bde count */
2041 pde6 = (struct lpfc_pde6 *) bpl;
2043 /* setup PDE6 with the rest of the info */
2044 memset(pde6, 0, sizeof(struct lpfc_pde6));
2045 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2046 bf_set(pde6_optx, pde6, txop);
2047 bf_set(pde6_oprx, pde6, rxop);
2050 * We only need to check the data on READs, for WRITEs
2051 * protection data is automatically generated, not checked.
2053 if (datadir == DMA_FROM_DEVICE) {
2054 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
2055 bf_set(pde6_ce, pde6, checking);
2057 bf_set(pde6_ce, pde6, 0);
2059 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2060 bf_set(pde6_re, pde6, checking);
2062 bf_set(pde6_re, pde6, 0);
2064 bf_set(pde6_ai, pde6, 1);
2065 bf_set(pde6_ae, pde6, 0);
2066 bf_set(pde6_apptagval, pde6, 0);
2068 /* Endianness conversion if necessary for PDE6 */
2069 pde6->word0 = cpu_to_le32(pde6->word0);
2070 pde6->word1 = cpu_to_le32(pde6->word1);
2071 pde6->word2 = cpu_to_le32(pde6->word2);
2073 /* advance bpl and increment bde count */
2077 /* assumption: caller has already run dma_map_sg on command data */
2078 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2079 physaddr = sg_dma_address(sgde);
2080 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
2081 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
2082 bpl->tus.f.bdeSize = sg_dma_len(sgde);
2083 if (datadir == DMA_TO_DEVICE)
2084 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2086 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2087 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2097 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
2098 * @phba: The Hba for which this call is being executed.
2099 * @sc: pointer to scsi command we're working on
2100 * @bpl: pointer to buffer list for protection groups
2101 * @datacnt: number of segments of data that have been dma mapped
2102 * @protcnt: number of segment of protection data that have been dma mapped
2104 * This function sets up BPL buffer list for protection groups of
2105 * type LPFC_PG_TYPE_DIF
2107 * This is usually used when DIFs are in their own buffers,
2108 * separate from the data. The HBA can then by instructed
2109 * to place the DIFs in the outgoing stream. For read operations,
2110 * The HBA could extract the DIFs and place it in DIF buffers.
2112 * The buffer list for this type consists of one or more of the
2113 * protection groups described below:
2114 * +-------------------------+
2115 * start of first prot group --> | PDE_5 |
2116 * +-------------------------+
2118 * +-------------------------+
2119 * | PDE_7 (Prot BDE) |
2120 * +-------------------------+
2122 * +-------------------------+
2123 * |more Data BDE's ... (opt)|
2124 * +-------------------------+
2125 * start of new prot group --> | PDE_5 |
2126 * +-------------------------+
2128 * +-------------------------+
2130 * Note: It is assumed that both data and protection s/g buffers have been
2133 * Returns the number of BDEs added to the BPL.
2136 lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2137 struct ulp_bde64 *bpl, int datacnt, int protcnt)
2139 struct scatterlist *sgde = NULL; /* s/g data entry */
2140 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2141 struct lpfc_pde5 *pde5 = NULL;
2142 struct lpfc_pde6 *pde6 = NULL;
2143 struct lpfc_pde7 *pde7 = NULL;
2144 dma_addr_t dataphysaddr, protphysaddr;
2145 unsigned short curr_data = 0, curr_prot = 0;
2146 unsigned int split_offset;
2147 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2148 unsigned int protgrp_blks, protgrp_bytes;
2149 unsigned int remainder, subtotal;
2151 int datadir = sc->sc_data_direction;
2152 unsigned char pgdone = 0, alldone = 0;
2154 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2157 uint32_t checking = 1;
2162 sgpe = scsi_prot_sglist(sc);
2163 sgde = scsi_sglist(sc);
2165 if (!sgpe || !sgde) {
2166 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2167 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
2172 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2176 /* extract some info from the scsi command */
2177 blksize = lpfc_cmd_blksize(sc);
2178 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2180 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2181 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2183 if (rc & BG_ERR_SWAP)
2184 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2185 if (rc & BG_ERR_CHECK)
2192 /* Check to see if we ran out of space */
2193 if (num_bde >= (phba->cfg_total_seg_cnt - 2))
2196 /* setup PDE5 with what we have */
2197 pde5 = (struct lpfc_pde5 *) bpl;
2198 memset(pde5, 0, sizeof(struct lpfc_pde5));
2199 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
2201 /* Endianness conversion if necessary for PDE5 */
2202 pde5->word0 = cpu_to_le32(pde5->word0);
2203 pde5->reftag = cpu_to_le32(reftag);
2205 /* advance bpl and increment bde count */
2208 pde6 = (struct lpfc_pde6 *) bpl;
2210 /* setup PDE6 with the rest of the info */
2211 memset(pde6, 0, sizeof(struct lpfc_pde6));
2212 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2213 bf_set(pde6_optx, pde6, txop);
2214 bf_set(pde6_oprx, pde6, rxop);
2216 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
2217 bf_set(pde6_ce, pde6, checking);
2219 bf_set(pde6_ce, pde6, 0);
2221 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2222 bf_set(pde6_re, pde6, checking);
2224 bf_set(pde6_re, pde6, 0);
2226 bf_set(pde6_ai, pde6, 1);
2227 bf_set(pde6_ae, pde6, 0);
2228 bf_set(pde6_apptagval, pde6, 0);
2230 /* Endianness conversion if necessary for PDE6 */
2231 pde6->word0 = cpu_to_le32(pde6->word0);
2232 pde6->word1 = cpu_to_le32(pde6->word1);
2233 pde6->word2 = cpu_to_le32(pde6->word2);
2235 /* advance bpl and increment bde count */
2239 /* setup the first BDE that points to protection buffer */
2240 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2241 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2243 /* must be integer multiple of the DIF block length */
2244 BUG_ON(protgroup_len % 8);
2246 pde7 = (struct lpfc_pde7 *) bpl;
2247 memset(pde7, 0, sizeof(struct lpfc_pde7));
2248 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
2250 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
2251 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
2253 protgrp_blks = protgroup_len / 8;
2254 protgrp_bytes = protgrp_blks * blksize;
2256 /* check if this pde is crossing the 4K boundary; if so split */
2257 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
2258 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
2259 protgroup_offset += protgroup_remainder;
2260 protgrp_blks = protgroup_remainder / 8;
2261 protgrp_bytes = protgrp_blks * blksize;
2263 protgroup_offset = 0;
2269 /* setup BDE's for data blocks associated with DIF data */
2271 subtotal = 0; /* total bytes processed for current prot grp */
2273 /* Check to see if we ran out of space */
2274 if (num_bde >= phba->cfg_total_seg_cnt)
2278 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2279 "9065 BLKGRD:%s Invalid data segment\n",
2284 dataphysaddr = sg_dma_address(sgde) + split_offset;
2285 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
2286 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
2288 remainder = sg_dma_len(sgde) - split_offset;
2290 if ((subtotal + remainder) <= protgrp_bytes) {
2291 /* we can use this whole buffer */
2292 bpl->tus.f.bdeSize = remainder;
2295 if ((subtotal + remainder) == protgrp_bytes)
2298 /* must split this buffer with next prot grp */
2299 bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
2300 split_offset += bpl->tus.f.bdeSize;
2303 subtotal += bpl->tus.f.bdeSize;
2305 if (datadir == DMA_TO_DEVICE)
2306 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2308 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2309 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2317 /* Move to the next s/g segment if possible */
2318 sgde = sg_next(sgde);
2322 if (protgroup_offset) {
2323 /* update the reference tag */
2324 reftag += protgrp_blks;
2330 if (curr_prot == protcnt) {
2332 } else if (curr_prot < protcnt) {
2333 /* advance to next prot buffer */
2334 sgpe = sg_next(sgpe);
2337 /* update the reference tag */
2338 reftag += protgrp_blks;
2340 /* if we're here, we have a bug */
2341 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2342 "9054 BLKGRD: bug in %s\n", __func__);
2352 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
2353 * @phba: The Hba for which this call is being executed.
2354 * @sc: pointer to scsi command we're working on
2355 * @sgl: pointer to buffer list for protection groups
2356 * @datacnt: number of segments of data that have been dma mapped
2358 * This function sets up SGL buffer list for protection groups of
2359 * type LPFC_PG_TYPE_NO_DIF
2361 * This is usually used when the HBA is instructed to generate
2362 * DIFs and insert them into data stream (or strip DIF from
2363 * incoming data stream)
2365 * The buffer list consists of just one protection group described
2367 * +-------------------------+
2368 * start of prot group --> | DI_SEED |
2369 * +-------------------------+
2371 * +-------------------------+
2372 * |more Data SGE's ... (opt)|
2373 * +-------------------------+
2376 * Note: Data s/g buffers have been dma mapped
2378 * Returns the number of SGEs added to the SGL.
2381 lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2382 struct sli4_sge *sgl, int datasegcnt)
2384 struct scatterlist *sgde = NULL; /* s/g data entry */
2385 struct sli4_sge_diseed *diseed = NULL;
2386 dma_addr_t physaddr;
2387 int i = 0, num_sge = 0, status;
2391 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2394 uint32_t checking = 1;
2396 uint32_t dma_offset = 0;
2398 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2402 /* extract some info from the scsi command for pde*/
2403 blksize = lpfc_cmd_blksize(sc);
2404 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2406 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2407 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2409 if (rc & BG_ERR_SWAP)
2410 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2411 if (rc & BG_ERR_CHECK)
2416 /* setup DISEED with what we have */
2417 diseed = (struct sli4_sge_diseed *) sgl;
2418 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2419 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2421 /* Endianness conversion if necessary */
2422 diseed->ref_tag = cpu_to_le32(reftag);
2423 diseed->ref_tag_tran = diseed->ref_tag;
2426 * We only need to check the data on READs, for WRITEs
2427 * protection data is automatically generated, not checked.
2429 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2430 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
2431 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2433 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2435 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2436 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2438 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2441 /* setup DISEED with the rest of the info */
2442 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2443 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
2445 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2446 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2448 /* Endianness conversion if necessary for DISEED */
2449 diseed->word2 = cpu_to_le32(diseed->word2);
2450 diseed->word3 = cpu_to_le32(diseed->word3);
2452 /* advance bpl and increment sge count */
2456 /* assumption: caller has already run dma_map_sg on command data */
2457 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2458 physaddr = sg_dma_address(sgde);
2459 dma_len = sg_dma_len(sgde);
2460 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
2461 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
2462 if ((i + 1) == datasegcnt)
2463 bf_set(lpfc_sli4_sge_last, sgl, 1);
2465 bf_set(lpfc_sli4_sge_last, sgl, 0);
2466 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2467 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2469 sgl->sge_len = cpu_to_le32(dma_len);
2470 dma_offset += dma_len;
2481 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
2482 * @phba: The Hba for which this call is being executed.
2483 * @sc: pointer to scsi command we're working on
2484 * @sgl: pointer to buffer list for protection groups
2485 * @datacnt: number of segments of data that have been dma mapped
2486 * @protcnt: number of segment of protection data that have been dma mapped
2488 * This function sets up SGL buffer list for protection groups of
2489 * type LPFC_PG_TYPE_DIF
2491 * This is usually used when DIFs are in their own buffers,
2492 * separate from the data. The HBA can then by instructed
2493 * to place the DIFs in the outgoing stream. For read operations,
2494 * The HBA could extract the DIFs and place it in DIF buffers.
2496 * The buffer list for this type consists of one or more of the
2497 * protection groups described below:
2498 * +-------------------------+
2499 * start of first prot group --> | DISEED |
2500 * +-------------------------+
2501 * | DIF (Prot SGE) |
2502 * +-------------------------+
2504 * +-------------------------+
2505 * |more Data SGE's ... (opt)|
2506 * +-------------------------+
2507 * start of new prot group --> | DISEED |
2508 * +-------------------------+
2510 * +-------------------------+
2512 * Note: It is assumed that both data and protection s/g buffers have been
2515 * Returns the number of SGEs added to the SGL.
2518 lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2519 struct sli4_sge *sgl, int datacnt, int protcnt)
2521 struct scatterlist *sgde = NULL; /* s/g data entry */
2522 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2523 struct sli4_sge_diseed *diseed = NULL;
2524 dma_addr_t dataphysaddr, protphysaddr;
2525 unsigned short curr_data = 0, curr_prot = 0;
2526 unsigned int split_offset;
2527 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2528 unsigned int protgrp_blks, protgrp_bytes;
2529 unsigned int remainder, subtotal;
2531 unsigned char pgdone = 0, alldone = 0;
2536 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2539 uint32_t checking = 1;
2540 uint32_t dma_offset = 0;
2543 sgpe = scsi_prot_sglist(sc);
2544 sgde = scsi_sglist(sc);
2546 if (!sgpe || !sgde) {
2547 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2548 "9082 Invalid s/g entry: data=0x%p prot=0x%p\n",
2553 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2557 /* extract some info from the scsi command */
2558 blksize = lpfc_cmd_blksize(sc);
2559 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2561 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2562 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
2564 if (rc & BG_ERR_SWAP)
2565 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
2566 if (rc & BG_ERR_CHECK)
2573 /* Check to see if we ran out of space */
2574 if (num_sge >= (phba->cfg_total_seg_cnt - 2))
2577 /* setup DISEED with what we have */
2578 diseed = (struct sli4_sge_diseed *) sgl;
2579 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2580 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2582 /* Endianness conversion if necessary */
2583 diseed->ref_tag = cpu_to_le32(reftag);
2584 diseed->ref_tag_tran = diseed->ref_tag;
2586 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
2587 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2590 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2592 * When in this mode, the hardware will replace
2593 * the guard tag from the host with a
2594 * newly generated good CRC for the wire.
2595 * Switch to raw mode here to avoid this
2596 * behavior. What the host sends gets put on the wire.
2598 if (txop == BG_OP_IN_CRC_OUT_CRC) {
2599 txop = BG_OP_RAW_MODE;
2600 rxop = BG_OP_RAW_MODE;
2605 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2606 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2608 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2610 /* setup DISEED with the rest of the info */
2611 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2612 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
2614 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2615 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2617 /* Endianness conversion if necessary for DISEED */
2618 diseed->word2 = cpu_to_le32(diseed->word2);
2619 diseed->word3 = cpu_to_le32(diseed->word3);
2621 /* advance sgl and increment bde count */
2625 /* setup the first BDE that points to protection buffer */
2626 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2627 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2629 /* must be integer multiple of the DIF block length */
2630 BUG_ON(protgroup_len % 8);
2632 /* Now setup DIF SGE */
2634 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
2635 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
2636 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
2637 sgl->word2 = cpu_to_le32(sgl->word2);
2639 protgrp_blks = protgroup_len / 8;
2640 protgrp_bytes = protgrp_blks * blksize;
2642 /* check if DIF SGE is crossing the 4K boundary; if so split */
2643 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
2644 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
2645 protgroup_offset += protgroup_remainder;
2646 protgrp_blks = protgroup_remainder / 8;
2647 protgrp_bytes = protgrp_blks * blksize;
2649 protgroup_offset = 0;
2655 /* setup SGE's for data blocks associated with DIF data */
2657 subtotal = 0; /* total bytes processed for current prot grp */
2659 /* Check to see if we ran out of space */
2660 if (num_sge >= phba->cfg_total_seg_cnt)
2664 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2665 "9086 BLKGRD:%s Invalid data segment\n",
2670 dataphysaddr = sg_dma_address(sgde) + split_offset;
2672 remainder = sg_dma_len(sgde) - split_offset;
2674 if ((subtotal + remainder) <= protgrp_bytes) {
2675 /* we can use this whole buffer */
2676 dma_len = remainder;
2679 if ((subtotal + remainder) == protgrp_bytes)
2682 /* must split this buffer with next prot grp */
2683 dma_len = protgrp_bytes - subtotal;
2684 split_offset += dma_len;
2687 subtotal += dma_len;
2689 sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr));
2690 sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr));
2691 bf_set(lpfc_sli4_sge_last, sgl, 0);
2692 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2693 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2695 sgl->sge_len = cpu_to_le32(dma_len);
2696 dma_offset += dma_len;
2704 /* Move to the next s/g segment if possible */
2705 sgde = sg_next(sgde);
2708 if (protgroup_offset) {
2709 /* update the reference tag */
2710 reftag += protgrp_blks;
2716 if (curr_prot == protcnt) {
2717 bf_set(lpfc_sli4_sge_last, sgl, 1);
2719 } else if (curr_prot < protcnt) {
2720 /* advance to next prot buffer */
2721 sgpe = sg_next(sgpe);
2724 /* update the reference tag */
2725 reftag += protgrp_blks;
2727 /* if we're here, we have a bug */
2728 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2729 "9085 BLKGRD: bug in %s\n", __func__);
2740 * lpfc_prot_group_type - Get prtotection group type of SCSI command
2741 * @phba: The Hba for which this call is being executed.
2742 * @sc: pointer to scsi command we're working on
2744 * Given a SCSI command that supports DIF, determine composition of protection
2745 * groups involved in setting up buffer lists
2747 * Returns: Protection group type (with or without DIF)
2751 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
2753 int ret = LPFC_PG_TYPE_INVALID;
2754 unsigned char op = scsi_get_prot_op(sc);
2757 case SCSI_PROT_READ_STRIP:
2758 case SCSI_PROT_WRITE_INSERT:
2759 ret = LPFC_PG_TYPE_NO_DIF;
2761 case SCSI_PROT_READ_INSERT:
2762 case SCSI_PROT_WRITE_STRIP:
2763 case SCSI_PROT_READ_PASS:
2764 case SCSI_PROT_WRITE_PASS:
2765 ret = LPFC_PG_TYPE_DIF_BUF;
2769 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2770 "9021 Unsupported protection op:%d\n",
2778 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
2779 * @phba: The Hba for which this call is being executed.
2780 * @lpfc_cmd: The scsi buffer which is going to be adjusted.
2782 * Adjust the data length to account for how much data
2783 * is actually on the wire.
2785 * returns the adjusted data length
2788 lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
2789 struct lpfc_scsi_buf *lpfc_cmd)
2791 struct scsi_cmnd *sc = lpfc_cmd->pCmd;
2794 fcpdl = scsi_bufflen(sc);
2796 /* Check if there is protection data on the wire */
2797 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2798 /* Read check for protection data */
2799 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
2803 /* Write check for protection data */
2804 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
2809 * If we are in DIF Type 1 mode every data block has a 8 byte
2810 * DIF (trailer) attached to it. Must ajust FCP data length
2811 * to account for the protection data.
2813 fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
2819 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
2820 * @phba: The Hba for which this call is being executed.
2821 * @lpfc_cmd: The scsi buffer which is going to be prep'ed.
2823 * This is the protection/DIF aware version of
2824 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
2825 * two functions eventually, but for now, it's here
2828 lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
2829 struct lpfc_scsi_buf *lpfc_cmd)
2831 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
2832 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
2833 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
2834 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
2835 uint32_t num_bde = 0;
2836 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
2837 int prot_group_type = 0;
2841 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
2842 * fcp_rsp regions to the first data bde entry
2845 if (scsi_sg_count(scsi_cmnd)) {
2847 * The driver stores the segment count returned from pci_map_sg
2848 * because this a count of dma-mappings used to map the use_sg
2849 * pages. They are not guaranteed to be the same for those
2850 * architectures that implement an IOMMU.
2852 datasegcnt = dma_map_sg(&phba->pcidev->dev,
2853 scsi_sglist(scsi_cmnd),
2854 scsi_sg_count(scsi_cmnd), datadir);
2855 if (unlikely(!datasegcnt))
2858 lpfc_cmd->seg_cnt = datasegcnt;
2860 /* First check if data segment count from SCSI Layer is good */
2861 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
2864 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
2866 switch (prot_group_type) {
2867 case LPFC_PG_TYPE_NO_DIF:
2869 /* Here we need to add a PDE5 and PDE6 to the count */
2870 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt)
2873 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
2875 /* we should have 2 or more entries in buffer list */
2880 case LPFC_PG_TYPE_DIF_BUF:
2882 * This type indicates that protection buffers are
2883 * passed to the driver, so that needs to be prepared
2886 protsegcnt = dma_map_sg(&phba->pcidev->dev,
2887 scsi_prot_sglist(scsi_cmnd),
2888 scsi_prot_sg_count(scsi_cmnd), datadir);
2889 if (unlikely(!protsegcnt)) {
2890 scsi_dma_unmap(scsi_cmnd);
2894 lpfc_cmd->prot_seg_cnt = protsegcnt;
2897 * There is a minimun of 4 BPLs used for every
2898 * protection data segment.
2900 if ((lpfc_cmd->prot_seg_cnt * 4) >
2901 (phba->cfg_total_seg_cnt - 2))
2904 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
2905 datasegcnt, protsegcnt);
2906 /* we should have 3 or more entries in buffer list */
2907 if ((num_bde < 3) ||
2908 (num_bde > phba->cfg_total_seg_cnt))
2912 case LPFC_PG_TYPE_INVALID:
2914 scsi_dma_unmap(scsi_cmnd);
2915 lpfc_cmd->seg_cnt = 0;
2917 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2918 "9022 Unexpected protection group %i\n",
2925 * Finish initializing those IOCB fields that are dependent on the
2926 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
2927 * reinitialized since all iocb memory resources are used many times
2928 * for transmit, receive, and continuation bpl's.
2930 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
2931 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
2932 iocb_cmd->ulpBdeCount = 1;
2933 iocb_cmd->ulpLe = 1;
2935 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
2936 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
2939 * Due to difference in data length between DIF/non-DIF paths,
2940 * we need to set word 4 of IOCB here
2942 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
2946 if (lpfc_cmd->seg_cnt)
2947 scsi_dma_unmap(scsi_cmnd);
2948 if (lpfc_cmd->prot_seg_cnt)
2949 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
2950 scsi_prot_sg_count(scsi_cmnd),
2951 scsi_cmnd->sc_data_direction);
2953 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2954 "9023 Cannot setup S/G List for HBA"
2955 "IO segs %d/%d BPL %d SCSI %d: %d %d\n",
2956 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
2957 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
2958 prot_group_type, num_bde);
2960 lpfc_cmd->seg_cnt = 0;
2961 lpfc_cmd->prot_seg_cnt = 0;
2966 * This function calcuates the T10 DIF guard tag
2967 * on the specified data using a CRC algorithmn
2971 lpfc_bg_crc(uint8_t *data, int count)
2976 crc = crc_t10dif(data, count);
2977 x = cpu_to_be16(crc);
2982 * This function calcuates the T10 DIF guard tag
2983 * on the specified data using a CSUM algorithmn
2984 * using ip_compute_csum.
2987 lpfc_bg_csum(uint8_t *data, int count)
2991 ret = ip_compute_csum(data, count);
2996 * This function examines the protection data to try to determine
2997 * what type of T10-DIF error occurred.
3000 lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3002 struct scatterlist *sgpe; /* s/g prot entry */
3003 struct scatterlist *sgde; /* s/g data entry */
3004 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3005 struct scsi_dif_tuple *src = NULL;
3006 uint8_t *data_src = NULL;
3007 uint16_t guard_tag, guard_type;
3008 uint16_t start_app_tag, app_tag;
3009 uint32_t start_ref_tag, ref_tag;
3010 int prot, protsegcnt;
3011 int err_type, len, data_len;
3012 int chk_ref, chk_app, chk_guard;
3016 err_type = BGS_GUARD_ERR_MASK;
3020 /* First check to see if there is protection data to examine */
3021 prot = scsi_get_prot_op(cmd);
3022 if ((prot == SCSI_PROT_READ_STRIP) ||
3023 (prot == SCSI_PROT_WRITE_INSERT) ||
3024 (prot == SCSI_PROT_NORMAL))
3027 /* Currently the driver just supports ref_tag and guard_tag checking */
3032 /* Setup a ptr to the protection data provided by the SCSI host */
3033 sgpe = scsi_prot_sglist(cmd);
3034 protsegcnt = lpfc_cmd->prot_seg_cnt;
3036 if (sgpe && protsegcnt) {
3039 * We will only try to verify guard tag if the segment
3040 * data length is a multiple of the blksize.
3042 sgde = scsi_sglist(cmd);
3043 blksize = lpfc_cmd_blksize(cmd);
3044 data_src = (uint8_t *)sg_virt(sgde);
3045 data_len = sgde->length;
3046 if ((data_len & (blksize - 1)) == 0)
3048 guard_type = scsi_host_get_guard(cmd->device->host);
3050 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
3051 start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */
3052 start_app_tag = src->app_tag;
3054 while (src && protsegcnt) {
3058 * First check to see if a protection data
3061 if ((src->ref_tag == 0xffffffff) ||
3062 (src->app_tag == 0xffff)) {
3067 /* First Guard Tag checking */
3069 guard_tag = src->guard_tag;
3070 if (lpfc_cmd_guard_csum(cmd))
3071 sum = lpfc_bg_csum(data_src,
3074 sum = lpfc_bg_crc(data_src,
3076 if ((guard_tag != sum)) {
3077 err_type = BGS_GUARD_ERR_MASK;
3082 /* Reference Tag checking */
3083 ref_tag = be32_to_cpu(src->ref_tag);
3084 if (chk_ref && (ref_tag != start_ref_tag)) {
3085 err_type = BGS_REFTAG_ERR_MASK;
3090 /* App Tag checking */
3091 app_tag = src->app_tag;
3092 if (chk_app && (app_tag != start_app_tag)) {
3093 err_type = BGS_APPTAG_ERR_MASK;
3097 len -= sizeof(struct scsi_dif_tuple);
3102 data_src += blksize;
3103 data_len -= blksize;
3106 * Are we at the end of the Data segment?
3107 * The data segment is only used for Guard
3110 if (chk_guard && (data_len == 0)) {
3112 sgde = sg_next(sgde);
3116 data_src = (uint8_t *)sg_virt(sgde);
3117 data_len = sgde->length;
3118 if ((data_len & (blksize - 1)) == 0)
3123 /* Goto the next Protection data segment */
3124 sgpe = sg_next(sgpe);
3126 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
3135 if (err_type == BGS_GUARD_ERR_MASK) {
3136 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3138 cmd->result = DRIVER_SENSE << 24
3139 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3140 phba->bg_guard_err_cnt++;
3141 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3142 "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n",
3143 (unsigned long)scsi_get_lba(cmd),
3146 } else if (err_type == BGS_REFTAG_ERR_MASK) {
3147 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3149 cmd->result = DRIVER_SENSE << 24
3150 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3152 phba->bg_reftag_err_cnt++;
3153 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3154 "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n",
3155 (unsigned long)scsi_get_lba(cmd),
3156 ref_tag, start_ref_tag);
3158 } else if (err_type == BGS_APPTAG_ERR_MASK) {
3159 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3161 cmd->result = DRIVER_SENSE << 24
3162 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3164 phba->bg_apptag_err_cnt++;
3165 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3166 "9041 BLKGRD: LBA %lx app_tag error %x != %x\n",
3167 (unsigned long)scsi_get_lba(cmd),
3168 app_tag, start_app_tag);
3174 * This function checks for BlockGuard errors detected by
3175 * the HBA. In case of errors, the ASC/ASCQ fields in the
3176 * sense buffer will be set accordingly, paired with
3177 * ILLEGAL_REQUEST to signal to the kernel that the HBA
3178 * detected corruption.
3181 * 0 - No error found
3182 * 1 - BlockGuard error found
3183 * -1 - Internal error (bad profile, ...etc)
3186 lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
3187 struct lpfc_iocbq *pIocbOut)
3189 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3190 struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
3192 uint32_t bghm = bgf->bghm;
3193 uint32_t bgstat = bgf->bgstat;
3194 uint64_t failing_sector = 0;
3196 spin_lock(&_dump_buf_lock);
3197 if (!_dump_buf_done) {
3198 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
3199 " Data for %u blocks to debugfs\n",
3200 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
3201 lpfc_debug_save_data(phba, cmd);
3203 /* If we have a prot sgl, save the DIF buffer */
3204 if (lpfc_prot_group_type(phba, cmd) ==
3205 LPFC_PG_TYPE_DIF_BUF) {
3206 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
3207 "Saving DIF for %u blocks to debugfs\n",
3208 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
3209 lpfc_debug_save_dif(phba, cmd);
3214 spin_unlock(&_dump_buf_lock);
3216 if (lpfc_bgs_get_invalid_prof(bgstat)) {
3217 cmd->result = ScsiResult(DID_ERROR, 0);
3218 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3219 "9072 BLKGRD: Invalid BG Profile in cmd"
3220 " 0x%x lba 0x%llx blk cnt 0x%x "
3221 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3222 (unsigned long long)scsi_get_lba(cmd),
3223 blk_rq_sectors(cmd->request), bgstat, bghm);
3228 if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
3229 cmd->result = ScsiResult(DID_ERROR, 0);
3230 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3231 "9073 BLKGRD: Invalid BG PDIF Block in cmd"
3232 " 0x%x lba 0x%llx blk cnt 0x%x "
3233 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3234 (unsigned long long)scsi_get_lba(cmd),
3235 blk_rq_sectors(cmd->request), bgstat, bghm);
3240 if (lpfc_bgs_get_guard_err(bgstat)) {
3243 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3245 cmd->result = DRIVER_SENSE << 24
3246 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3247 phba->bg_guard_err_cnt++;
3248 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3249 "9055 BLKGRD: Guard Tag error in cmd"
3250 " 0x%x lba 0x%llx blk cnt 0x%x "
3251 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3252 (unsigned long long)scsi_get_lba(cmd),
3253 blk_rq_sectors(cmd->request), bgstat, bghm);
3256 if (lpfc_bgs_get_reftag_err(bgstat)) {
3259 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3261 cmd->result = DRIVER_SENSE << 24
3262 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3264 phba->bg_reftag_err_cnt++;
3265 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3266 "9056 BLKGRD: Ref Tag error in cmd"
3267 " 0x%x lba 0x%llx blk cnt 0x%x "
3268 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3269 (unsigned long long)scsi_get_lba(cmd),
3270 blk_rq_sectors(cmd->request), bgstat, bghm);
3273 if (lpfc_bgs_get_apptag_err(bgstat)) {
3276 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3278 cmd->result = DRIVER_SENSE << 24
3279 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3281 phba->bg_apptag_err_cnt++;
3282 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3283 "9061 BLKGRD: App Tag error in cmd"
3284 " 0x%x lba 0x%llx blk cnt 0x%x "
3285 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3286 (unsigned long long)scsi_get_lba(cmd),
3287 blk_rq_sectors(cmd->request), bgstat, bghm);
3290 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
3292 * setup sense data descriptor 0 per SPC-4 as an information
3293 * field, and put the failing LBA in it.
3294 * This code assumes there was also a guard/app/ref tag error
3297 cmd->sense_buffer[7] = 0xc; /* Additional sense length */
3298 cmd->sense_buffer[8] = 0; /* Information descriptor type */
3299 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
3300 cmd->sense_buffer[10] = 0x80; /* Validity bit */
3302 /* bghm is a "on the wire" FC frame based count */
3303 switch (scsi_get_prot_op(cmd)) {
3304 case SCSI_PROT_READ_INSERT:
3305 case SCSI_PROT_WRITE_STRIP:
3306 bghm /= cmd->device->sector_size;
3308 case SCSI_PROT_READ_STRIP:
3309 case SCSI_PROT_WRITE_INSERT:
3310 case SCSI_PROT_READ_PASS:
3311 case SCSI_PROT_WRITE_PASS:
3312 bghm /= (cmd->device->sector_size +
3313 sizeof(struct scsi_dif_tuple));
3317 failing_sector = scsi_get_lba(cmd);
3318 failing_sector += bghm;
3320 /* Descriptor Information */
3321 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
3325 /* No error was reported - problem in FW? */
3326 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3327 "9057 BLKGRD: Unknown error in cmd"
3328 " 0x%x lba 0x%llx blk cnt 0x%x "
3329 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3330 (unsigned long long)scsi_get_lba(cmd),
3331 blk_rq_sectors(cmd->request), bgstat, bghm);
3333 /* Calcuate what type of error it was */
3334 lpfc_calc_bg_err(phba, lpfc_cmd);
3341 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3342 * @phba: The Hba for which this call is being executed.
3343 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3345 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3346 * field of @lpfc_cmd for device with SLI-4 interface spec.
3353 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3355 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3356 struct scatterlist *sgel = NULL;
3357 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3358 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
3359 struct sli4_sge *first_data_sgl;
3360 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3361 dma_addr_t physaddr;
3362 uint32_t num_bde = 0;
3364 uint32_t dma_offset = 0;
3366 struct ulp_bde64 *bde;
3369 * There are three possibilities here - use scatter-gather segment, use
3370 * the single mapping, or neither. Start the lpfc command prep by
3371 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
3374 if (scsi_sg_count(scsi_cmnd)) {
3376 * The driver stores the segment count returned from pci_map_sg
3377 * because this a count of dma-mappings used to map the use_sg
3378 * pages. They are not guaranteed to be the same for those
3379 * architectures that implement an IOMMU.
3382 nseg = scsi_dma_map(scsi_cmnd);
3383 if (unlikely(!nseg))
3386 /* clear the last flag in the fcp_rsp map entry */
3387 sgl->word2 = le32_to_cpu(sgl->word2);
3388 bf_set(lpfc_sli4_sge_last, sgl, 0);
3389 sgl->word2 = cpu_to_le32(sgl->word2);
3391 first_data_sgl = sgl;
3392 lpfc_cmd->seg_cnt = nseg;
3393 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
3394 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
3395 " %s: Too many sg segments from "
3396 "dma_map_sg. Config %d, seg_cnt %d\n",
3397 __func__, phba->cfg_sg_seg_cnt,
3399 lpfc_cmd->seg_cnt = 0;
3400 scsi_dma_unmap(scsi_cmnd);
3405 * The driver established a maximum scatter-gather segment count
3406 * during probe that limits the number of sg elements in any
3407 * single scsi command. Just run through the seg_cnt and format
3409 * When using SLI-3 the driver will try to fit all the BDEs into
3410 * the IOCB. If it can't then the BDEs get added to a BPL as it
3411 * does for SLI-2 mode.
3413 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
3414 physaddr = sg_dma_address(sgel);
3415 dma_len = sg_dma_len(sgel);
3416 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
3417 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
3418 sgl->word2 = le32_to_cpu(sgl->word2);
3419 if ((num_bde + 1) == nseg)
3420 bf_set(lpfc_sli4_sge_last, sgl, 1);
3422 bf_set(lpfc_sli4_sge_last, sgl, 0);
3423 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
3424 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
3425 sgl->word2 = cpu_to_le32(sgl->word2);
3426 sgl->sge_len = cpu_to_le32(dma_len);
3427 dma_offset += dma_len;
3430 /* setup the performance hint (first data BDE) if enabled */
3431 if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) {
3432 bde = (struct ulp_bde64 *)
3433 &(iocb_cmd->unsli3.sli3Words[5]);
3434 bde->addrLow = first_data_sgl->addr_lo;
3435 bde->addrHigh = first_data_sgl->addr_hi;
3436 bde->tus.f.bdeSize =
3437 le32_to_cpu(first_data_sgl->sge_len);
3438 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3439 bde->tus.w = cpu_to_le32(bde->tus.w);
3443 /* clear the last flag in the fcp_rsp map entry */
3444 sgl->word2 = le32_to_cpu(sgl->word2);
3445 bf_set(lpfc_sli4_sge_last, sgl, 1);
3446 sgl->word2 = cpu_to_le32(sgl->word2);
3450 * Finish initializing those IOCB fields that are dependent on the
3451 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
3452 * explicitly reinitialized.
3453 * all iocb memory resources are reused.
3455 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
3458 * Due to difference in data length between DIF/non-DIF paths,
3459 * we need to set word 4 of IOCB here
3461 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
3464 * If the OAS driver feature is enabled and the lun is enabled for
3465 * OAS, set the oas iocb related flags.
3467 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
3468 scsi_cmnd->device->hostdata)->oas_enabled)
3469 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
3474 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3475 * @phba: The Hba for which this call is being executed.
3476 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3478 * This is the protection/DIF aware version of
3479 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
3480 * two functions eventually, but for now, it's here
3483 lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
3484 struct lpfc_scsi_buf *lpfc_cmd)
3486 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3487 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3488 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl);
3489 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3490 uint32_t num_sge = 0;
3491 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
3492 int prot_group_type = 0;
3496 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
3497 * fcp_rsp regions to the first data sge entry
3499 if (scsi_sg_count(scsi_cmnd)) {
3501 * The driver stores the segment count returned from pci_map_sg
3502 * because this a count of dma-mappings used to map the use_sg
3503 * pages. They are not guaranteed to be the same for those
3504 * architectures that implement an IOMMU.
3506 datasegcnt = dma_map_sg(&phba->pcidev->dev,
3507 scsi_sglist(scsi_cmnd),
3508 scsi_sg_count(scsi_cmnd), datadir);
3509 if (unlikely(!datasegcnt))
3513 /* clear the last flag in the fcp_rsp map entry */
3514 sgl->word2 = le32_to_cpu(sgl->word2);
3515 bf_set(lpfc_sli4_sge_last, sgl, 0);
3516 sgl->word2 = cpu_to_le32(sgl->word2);
3519 lpfc_cmd->seg_cnt = datasegcnt;
3521 /* First check if data segment count from SCSI Layer is good */
3522 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
3525 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
3527 switch (prot_group_type) {
3528 case LPFC_PG_TYPE_NO_DIF:
3529 /* Here we need to add a DISEED to the count */
3530 if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt)
3533 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
3536 /* we should have 2 or more entries in buffer list */
3541 case LPFC_PG_TYPE_DIF_BUF:
3543 * This type indicates that protection buffers are
3544 * passed to the driver, so that needs to be prepared
3547 protsegcnt = dma_map_sg(&phba->pcidev->dev,
3548 scsi_prot_sglist(scsi_cmnd),
3549 scsi_prot_sg_count(scsi_cmnd), datadir);
3550 if (unlikely(!protsegcnt)) {
3551 scsi_dma_unmap(scsi_cmnd);
3555 lpfc_cmd->prot_seg_cnt = protsegcnt;
3557 * There is a minimun of 3 SGEs used for every
3558 * protection data segment.
3560 if ((lpfc_cmd->prot_seg_cnt * 3) >
3561 (phba->cfg_total_seg_cnt - 2))
3564 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
3565 datasegcnt, protsegcnt);
3567 /* we should have 3 or more entries in buffer list */
3568 if ((num_sge < 3) ||
3569 (num_sge > phba->cfg_total_seg_cnt))
3573 case LPFC_PG_TYPE_INVALID:
3575 scsi_dma_unmap(scsi_cmnd);
3576 lpfc_cmd->seg_cnt = 0;
3578 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3579 "9083 Unexpected protection group %i\n",
3585 switch (scsi_get_prot_op(scsi_cmnd)) {
3586 case SCSI_PROT_WRITE_STRIP:
3587 case SCSI_PROT_READ_STRIP:
3588 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
3590 case SCSI_PROT_WRITE_INSERT:
3591 case SCSI_PROT_READ_INSERT:
3592 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
3594 case SCSI_PROT_WRITE_PASS:
3595 case SCSI_PROT_READ_PASS:
3596 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
3600 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
3601 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
3604 * Due to difference in data length between DIF/non-DIF paths,
3605 * we need to set word 4 of IOCB here
3607 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
3610 * If the OAS driver feature is enabled and the lun is enabled for
3611 * OAS, set the oas iocb related flags.
3613 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
3614 scsi_cmnd->device->hostdata)->oas_enabled)
3615 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
3619 if (lpfc_cmd->seg_cnt)
3620 scsi_dma_unmap(scsi_cmnd);
3621 if (lpfc_cmd->prot_seg_cnt)
3622 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
3623 scsi_prot_sg_count(scsi_cmnd),
3624 scsi_cmnd->sc_data_direction);
3626 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3627 "9084 Cannot setup S/G List for HBA"
3628 "IO segs %d/%d SGL %d SCSI %d: %d %d\n",
3629 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
3630 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
3631 prot_group_type, num_sge);
3633 lpfc_cmd->seg_cnt = 0;
3634 lpfc_cmd->prot_seg_cnt = 0;
3639 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3640 * @phba: The Hba for which this call is being executed.
3641 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3643 * This routine wraps the actual DMA mapping function pointer from the
3651 lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3653 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
3657 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3659 * @phba: The Hba for which this call is being executed.
3660 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3662 * This routine wraps the actual DMA mapping function pointer from the
3670 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3672 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
3676 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
3677 * @phba: Pointer to hba context object.
3678 * @vport: Pointer to vport object.
3679 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
3680 * @rsp_iocb: Pointer to response iocb object which reported error.
3682 * This function posts an event when there is a SCSI command reporting
3683 * error from the scsi device.
3686 lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
3687 struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
3688 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3689 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3690 uint32_t resp_info = fcprsp->rspStatus2;
3691 uint32_t scsi_status = fcprsp->rspStatus3;
3692 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3693 struct lpfc_fast_path_event *fast_path_evt = NULL;
3694 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
3695 unsigned long flags;
3697 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
3700 /* If there is queuefull or busy condition send a scsi event */
3701 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
3702 (cmnd->result == SAM_STAT_BUSY)) {
3703 fast_path_evt = lpfc_alloc_fast_evt(phba);
3706 fast_path_evt->un.scsi_evt.event_type =
3708 fast_path_evt->un.scsi_evt.subcategory =
3709 (cmnd->result == SAM_STAT_TASK_SET_FULL) ?
3710 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
3711 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
3712 memcpy(&fast_path_evt->un.scsi_evt.wwpn,
3713 &pnode->nlp_portname, sizeof(struct lpfc_name));
3714 memcpy(&fast_path_evt->un.scsi_evt.wwnn,
3715 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3716 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
3717 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
3718 fast_path_evt = lpfc_alloc_fast_evt(phba);
3721 fast_path_evt->un.check_cond_evt.scsi_event.event_type =
3723 fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
3724 LPFC_EVENT_CHECK_COND;
3725 fast_path_evt->un.check_cond_evt.scsi_event.lun =
3727 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
3728 &pnode->nlp_portname, sizeof(struct lpfc_name));
3729 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
3730 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3731 fast_path_evt->un.check_cond_evt.sense_key =
3732 cmnd->sense_buffer[2] & 0xf;
3733 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
3734 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
3735 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3737 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
3738 ((scsi_status == SAM_STAT_GOOD) &&
3739 !(resp_info & (RESID_UNDER | RESID_OVER))))) {
3741 * If status is good or resid does not match with fcp_param and
3742 * there is valid fcpi_parm, then there is a read_check error
3744 fast_path_evt = lpfc_alloc_fast_evt(phba);
3747 fast_path_evt->un.read_check_error.header.event_type =
3748 FC_REG_FABRIC_EVENT;
3749 fast_path_evt->un.read_check_error.header.subcategory =
3750 LPFC_EVENT_FCPRDCHKERR;
3751 memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
3752 &pnode->nlp_portname, sizeof(struct lpfc_name));
3753 memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
3754 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3755 fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
3756 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
3757 fast_path_evt->un.read_check_error.fcpiparam =
3762 fast_path_evt->vport = vport;
3763 spin_lock_irqsave(&phba->hbalock, flags);
3764 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
3765 spin_unlock_irqrestore(&phba->hbalock, flags);
3766 lpfc_worker_wake_up(phba);
3771 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
3772 * @phba: The HBA for which this call is being executed.
3773 * @psb: The scsi buffer which is going to be un-mapped.
3775 * This routine does DMA un-mapping of scatter gather list of scsi command
3776 * field of @lpfc_cmd for device with SLI-3 interface spec.
3779 lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
3782 * There are only two special cases to consider. (1) the scsi command
3783 * requested scatter-gather usage or (2) the scsi command allocated
3784 * a request buffer, but did not request use_sg. There is a third
3785 * case, but it does not require resource deallocation.
3787 if (psb->seg_cnt > 0)
3788 scsi_dma_unmap(psb->pCmd);
3789 if (psb->prot_seg_cnt > 0)
3790 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
3791 scsi_prot_sg_count(psb->pCmd),
3792 psb->pCmd->sc_data_direction);
3796 * lpfc_handler_fcp_err - FCP response handler
3797 * @vport: The virtual port for which this call is being executed.
3798 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
3799 * @rsp_iocb: The response IOCB which contains FCP error.
3801 * This routine is called to process response IOCB with status field
3802 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
3803 * based upon SCSI and FCP error.
3806 lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
3807 struct lpfc_iocbq *rsp_iocb)
3809 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3810 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
3811 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3812 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3813 uint32_t resp_info = fcprsp->rspStatus2;
3814 uint32_t scsi_status = fcprsp->rspStatus3;
3816 uint32_t host_status = DID_OK;
3817 uint32_t rsplen = 0;
3818 uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
3822 * If this is a task management command, there is no
3823 * scsi packet associated with this lpfc_cmd. The driver
3826 if (fcpcmd->fcpCntl2) {
3831 if (resp_info & RSP_LEN_VALID) {
3832 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3833 if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
3834 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3835 "2719 Invalid response length: "
3836 "tgt x%x lun x%llx cmnd x%x rsplen x%x\n",
3838 cmnd->device->lun, cmnd->cmnd[0],
3840 host_status = DID_ERROR;
3843 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
3844 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3845 "2757 Protocol failure detected during "
3846 "processing of FCP I/O op: "
3847 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n",
3849 cmnd->device->lun, cmnd->cmnd[0],
3851 host_status = DID_ERROR;
3856 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
3857 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
3858 if (snslen > SCSI_SENSE_BUFFERSIZE)
3859 snslen = SCSI_SENSE_BUFFERSIZE;
3861 if (resp_info & RSP_LEN_VALID)
3862 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3863 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
3865 lp = (uint32_t *)cmnd->sense_buffer;
3867 /* special handling for under run conditions */
3868 if (!scsi_status && (resp_info & RESID_UNDER)) {
3869 /* don't log under runs if fcp set... */
3870 if (vport->cfg_log_verbose & LOG_FCP)
3871 logit = LOG_FCP_ERROR;
3872 /* unless operator says so */
3873 if (vport->cfg_log_verbose & LOG_FCP_UNDER)
3874 logit = LOG_FCP_UNDER;
3877 lpfc_printf_vlog(vport, KERN_WARNING, logit,
3878 "9024 FCP command x%x failed: x%x SNS x%x x%x "
3879 "Data: x%x x%x x%x x%x x%x\n",
3880 cmnd->cmnd[0], scsi_status,
3881 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
3882 be32_to_cpu(fcprsp->rspResId),
3883 be32_to_cpu(fcprsp->rspSnsLen),
3884 be32_to_cpu(fcprsp->rspRspLen),
3887 scsi_set_resid(cmnd, 0);
3888 if (resp_info & RESID_UNDER) {
3889 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
3891 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
3892 "9025 FCP Read Underrun, expected %d, "
3893 "residual %d Data: x%x x%x x%x\n",
3894 be32_to_cpu(fcpcmd->fcpDl),
3895 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
3899 * If there is an under run check if under run reported by
3900 * storage array is same as the under run reported by HBA.
3901 * If this is not same, there is a dropped frame.
3903 if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3905 (scsi_get_resid(cmnd) != fcpi_parm)) {
3906 lpfc_printf_vlog(vport, KERN_WARNING,
3907 LOG_FCP | LOG_FCP_ERROR,
3908 "9026 FCP Read Check Error "
3909 "and Underrun Data: x%x x%x x%x x%x\n",
3910 be32_to_cpu(fcpcmd->fcpDl),
3911 scsi_get_resid(cmnd), fcpi_parm,
3913 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
3914 host_status = DID_ERROR;
3917 * The cmnd->underflow is the minimum number of bytes that must
3918 * be transferred for this command. Provided a sense condition
3919 * is not present, make sure the actual amount transferred is at
3920 * least the underflow value or fail.
3922 if (!(resp_info & SNS_LEN_VALID) &&
3923 (scsi_status == SAM_STAT_GOOD) &&
3924 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
3925 < cmnd->underflow)) {
3926 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
3927 "9027 FCP command x%x residual "
3928 "underrun converted to error "
3929 "Data: x%x x%x x%x\n",
3930 cmnd->cmnd[0], scsi_bufflen(cmnd),
3931 scsi_get_resid(cmnd), cmnd->underflow);
3932 host_status = DID_ERROR;
3934 } else if (resp_info & RESID_OVER) {
3935 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
3936 "9028 FCP command x%x residual overrun error. "
3937 "Data: x%x x%x\n", cmnd->cmnd[0],
3938 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
3939 host_status = DID_ERROR;
3942 * Check SLI validation that all the transfer was actually done
3943 * (fcpi_parm should be zero). Apply check only to reads.
3945 } else if (fcpi_parm && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
3946 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
3947 "9029 FCP Read Check Error Data: "
3948 "x%x x%x x%x x%x x%x\n",
3949 be32_to_cpu(fcpcmd->fcpDl),
3950 be32_to_cpu(fcprsp->rspResId),
3951 fcpi_parm, cmnd->cmnd[0], scsi_status);
3952 switch (scsi_status) {
3954 case SAM_STAT_CHECK_CONDITION:
3955 /* Fabric dropped a data frame. Fail any successful
3956 * command in which we detected dropped frames.
3957 * A status of good or some check conditions could
3958 * be considered a successful command.
3960 host_status = DID_ERROR;
3963 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
3967 cmnd->result = ScsiResult(host_status, scsi_status);
3968 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
3972 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
3973 * @phba: The Hba for which this call is being executed.
3974 * @pIocbIn: The command IOCBQ for the scsi cmnd.
3975 * @pIocbOut: The response IOCBQ for the scsi cmnd.
3977 * This routine assigns scsi command result by looking into response IOCB
3978 * status field appropriately. This routine handles QUEUE FULL condition as
3979 * well by ramping down device queue depth.
3982 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
3983 struct lpfc_iocbq *pIocbOut)
3985 struct lpfc_scsi_buf *lpfc_cmd =
3986 (struct lpfc_scsi_buf *) pIocbIn->context1;
3987 struct lpfc_vport *vport = pIocbIn->vport;
3988 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
3989 struct lpfc_nodelist *pnode = rdata->pnode;
3990 struct scsi_cmnd *cmd;
3993 unsigned long flags;
3994 struct lpfc_fast_path_event *fast_path_evt;
3995 struct Scsi_Host *shost;
3996 uint32_t queue_depth, scsi_id;
3997 uint32_t logit = LOG_FCP;
3999 /* Sanity check on return of outstanding command */
4000 if (!(lpfc_cmd->pCmd))
4002 cmd = lpfc_cmd->pCmd;
4003 shost = cmd->device->host;
4005 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
4006 lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
4007 /* pick up SLI4 exhange busy status from HBA */
4008 lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
4010 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4011 if (lpfc_cmd->prot_data_type) {
4012 struct scsi_dif_tuple *src = NULL;
4014 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
4016 * Used to restore any changes to protection
4017 * data for error injection.
4019 switch (lpfc_cmd->prot_data_type) {
4020 case LPFC_INJERR_REFTAG:
4022 lpfc_cmd->prot_data;
4024 case LPFC_INJERR_APPTAG:
4026 (uint16_t)lpfc_cmd->prot_data;
4028 case LPFC_INJERR_GUARD:
4030 (uint16_t)lpfc_cmd->prot_data;
4036 lpfc_cmd->prot_data = 0;
4037 lpfc_cmd->prot_data_type = 0;
4038 lpfc_cmd->prot_data_segment = NULL;
4041 if (pnode && NLP_CHK_NODE_ACT(pnode))
4042 atomic_dec(&pnode->cmd_pending);
4044 if (lpfc_cmd->status) {
4045 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
4046 (lpfc_cmd->result & IOERR_DRVR_MASK))
4047 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
4048 else if (lpfc_cmd->status >= IOSTAT_CNT)
4049 lpfc_cmd->status = IOSTAT_DEFAULT;
4050 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
4051 !lpfc_cmd->fcp_rsp->rspStatus3 &&
4052 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
4053 !(vport->cfg_log_verbose & LOG_FCP_UNDER))
4056 logit = LOG_FCP | LOG_FCP_UNDER;
4057 lpfc_printf_vlog(vport, KERN_WARNING, logit,
4058 "9030 FCP cmd x%x failed <%d/%lld> "
4059 "status: x%x result: x%x "
4060 "sid: x%x did: x%x oxid: x%x "
4063 cmd->device ? cmd->device->id : 0xffff,
4064 cmd->device ? cmd->device->lun : 0xffff,
4065 lpfc_cmd->status, lpfc_cmd->result,
4067 (pnode) ? pnode->nlp_DID : 0,
4068 phba->sli_rev == LPFC_SLI_REV4 ?
4069 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
4070 pIocbOut->iocb.ulpContext,
4071 lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
4073 switch (lpfc_cmd->status) {
4074 case IOSTAT_FCP_RSP_ERROR:
4075 /* Call FCP RSP handler to determine result */
4076 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
4078 case IOSTAT_NPORT_BSY:
4079 case IOSTAT_FABRIC_BSY:
4080 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0);
4081 fast_path_evt = lpfc_alloc_fast_evt(phba);
4084 fast_path_evt->un.fabric_evt.event_type =
4085 FC_REG_FABRIC_EVENT;
4086 fast_path_evt->un.fabric_evt.subcategory =
4087 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
4088 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
4089 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4090 memcpy(&fast_path_evt->un.fabric_evt.wwpn,
4091 &pnode->nlp_portname,
4092 sizeof(struct lpfc_name));
4093 memcpy(&fast_path_evt->un.fabric_evt.wwnn,
4094 &pnode->nlp_nodename,
4095 sizeof(struct lpfc_name));
4097 fast_path_evt->vport = vport;
4098 fast_path_evt->work_evt.evt =
4099 LPFC_EVT_FASTPATH_MGMT_EVT;
4100 spin_lock_irqsave(&phba->hbalock, flags);
4101 list_add_tail(&fast_path_evt->work_evt.evt_listp,
4103 spin_unlock_irqrestore(&phba->hbalock, flags);
4104 lpfc_worker_wake_up(phba);
4106 case IOSTAT_LOCAL_REJECT:
4107 case IOSTAT_REMOTE_STOP:
4108 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
4110 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
4111 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
4113 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
4114 cmd->result = ScsiResult(DID_NO_CONNECT, 0);
4117 if (lpfc_cmd->result == IOERR_INVALID_RPI ||
4118 lpfc_cmd->result == IOERR_NO_RESOURCES ||
4119 lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
4120 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
4121 cmd->result = ScsiResult(DID_REQUEUE, 0);
4124 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
4125 lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
4126 pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
4127 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
4129 * This is a response for a BG enabled
4130 * cmd. Parse BG error
4132 lpfc_parse_bg_err(phba, lpfc_cmd,
4136 lpfc_printf_vlog(vport, KERN_WARNING,
4138 "9031 non-zero BGSTAT "
4139 "on unprotected cmd\n");
4142 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
4143 && (phba->sli_rev == LPFC_SLI_REV4)
4144 && (pnode && NLP_CHK_NODE_ACT(pnode))) {
4145 /* This IO was aborted by the target, we don't
4146 * know the rxid and because we did not send the
4147 * ABTS we cannot generate and RRQ.
4149 lpfc_set_rrq_active(phba, pnode,
4150 lpfc_cmd->cur_iocbq.sli4_lxritag,
4153 /* else: fall through */
4155 cmd->result = ScsiResult(DID_ERROR, 0);
4159 if (!pnode || !NLP_CHK_NODE_ACT(pnode)
4160 || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
4161 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED,
4164 cmd->result = ScsiResult(DID_OK, 0);
4166 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
4167 uint32_t *lp = (uint32_t *)cmd->sense_buffer;
4169 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4170 "0710 Iodone <%d/%llu> cmd %p, error "
4171 "x%x SNS x%x x%x Data: x%x x%x\n",
4172 cmd->device->id, cmd->device->lun, cmd,
4173 cmd->result, *lp, *(lp + 3), cmd->retries,
4174 scsi_get_resid(cmd));
4177 lpfc_update_stats(phba, lpfc_cmd);
4178 result = cmd->result;
4179 if (vport->cfg_max_scsicmpl_time &&
4180 time_after(jiffies, lpfc_cmd->start_time +
4181 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
4182 spin_lock_irqsave(shost->host_lock, flags);
4183 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4184 if (pnode->cmd_qdepth >
4185 atomic_read(&pnode->cmd_pending) &&
4186 (atomic_read(&pnode->cmd_pending) >
4187 LPFC_MIN_TGT_QDEPTH) &&
4188 ((cmd->cmnd[0] == READ_10) ||
4189 (cmd->cmnd[0] == WRITE_10)))
4191 atomic_read(&pnode->cmd_pending);
4193 pnode->last_change_time = jiffies;
4195 spin_unlock_irqrestore(shost->host_lock, flags);
4196 } else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4197 if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) &&
4198 time_after(jiffies, pnode->last_change_time +
4199 msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
4200 spin_lock_irqsave(shost->host_lock, flags);
4201 depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT
4203 depth = depth ? depth : 1;
4204 pnode->cmd_qdepth += depth;
4205 if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth)
4206 pnode->cmd_qdepth = vport->cfg_tgt_queue_depth;
4207 pnode->last_change_time = jiffies;
4208 spin_unlock_irqrestore(shost->host_lock, flags);
4212 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
4214 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
4215 queue_depth = cmd->device->queue_depth;
4216 scsi_id = cmd->device->id;
4217 cmd->scsi_done(cmd);
4219 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4220 spin_lock_irqsave(&phba->hbalock, flags);
4221 lpfc_cmd->pCmd = NULL;
4222 spin_unlock_irqrestore(&phba->hbalock, flags);
4225 * If there is a thread waiting for command completion
4226 * wake up the thread.
4228 spin_lock_irqsave(shost->host_lock, flags);
4229 if (lpfc_cmd->waitq)
4230 wake_up(lpfc_cmd->waitq);
4231 spin_unlock_irqrestore(shost->host_lock, flags);
4232 lpfc_release_scsi_buf(phba, lpfc_cmd);
4236 spin_lock_irqsave(&phba->hbalock, flags);
4237 lpfc_cmd->pCmd = NULL;
4238 spin_unlock_irqrestore(&phba->hbalock, flags);
4241 * If there is a thread waiting for command completion
4242 * wake up the thread.
4244 spin_lock_irqsave(shost->host_lock, flags);
4245 if (lpfc_cmd->waitq)
4246 wake_up(lpfc_cmd->waitq);
4247 spin_unlock_irqrestore(shost->host_lock, flags);
4249 lpfc_release_scsi_buf(phba, lpfc_cmd);
4253 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
4254 * @data: A pointer to the immediate command data portion of the IOCB.
4255 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
4257 * The routine copies the entire FCP command from @fcp_cmnd to @data while
4258 * byte swapping the data to big endian format for transmission on the wire.
4261 lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
4264 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
4265 i += sizeof(uint32_t), j++) {
4266 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
4271 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
4272 * @vport: The virtual port for which this call is being executed.
4273 * @lpfc_cmd: The scsi command which needs to send.
4274 * @pnode: Pointer to lpfc_nodelist.
4276 * This routine initializes fcp_cmnd and iocb data structure from scsi command
4277 * to transfer for device with SLI3 interface spec.
4280 lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
4281 struct lpfc_nodelist *pnode)
4283 struct lpfc_hba *phba = vport->phba;
4284 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
4285 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
4286 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
4287 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
4288 int datadir = scsi_cmnd->sc_data_direction;
4294 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
4297 lpfc_cmd->fcp_rsp->rspSnsLen = 0;
4298 /* clear task management bits */
4299 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
4301 int_to_scsilun(lpfc_cmd->pCmd->device->lun,
4302 &lpfc_cmd->fcp_cmnd->fcp_lun);
4304 ptr = &fcp_cmnd->fcpCdb[0];
4305 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
4306 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
4307 ptr += scsi_cmnd->cmd_len;
4308 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
4311 if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
4313 case HEAD_OF_QUEUE_TAG:
4314 fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
4316 case ORDERED_QUEUE_TAG:
4317 fcp_cmnd->fcpCntl1 = ORDERED_Q;
4320 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
4324 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
4326 sli4 = (phba->sli_rev == LPFC_SLI_REV4);
4327 piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
4330 * There are three possibilities here - use scatter-gather segment, use
4331 * the single mapping, or neither. Start the lpfc command prep by
4332 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
4335 if (scsi_sg_count(scsi_cmnd)) {
4336 if (datadir == DMA_TO_DEVICE) {
4337 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
4338 iocb_cmd->ulpPU = PARM_READ_CHECK;
4339 if (vport->cfg_first_burst_size &&
4340 (pnode->nlp_flag & NLP_FIRSTBURST)) {
4341 fcpdl = scsi_bufflen(scsi_cmnd);
4342 if (fcpdl < vport->cfg_first_burst_size)
4343 piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl;
4345 piocbq->iocb.un.fcpi.fcpi_XRdy =
4346 vport->cfg_first_burst_size;
4348 fcp_cmnd->fcpCntl3 = WRITE_DATA;
4349 phba->fc4OutputRequests++;
4351 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
4352 iocb_cmd->ulpPU = PARM_READ_CHECK;
4353 fcp_cmnd->fcpCntl3 = READ_DATA;
4354 phba->fc4InputRequests++;
4357 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
4358 iocb_cmd->un.fcpi.fcpi_parm = 0;
4359 iocb_cmd->ulpPU = 0;
4360 fcp_cmnd->fcpCntl3 = 0;
4361 phba->fc4ControlRequests++;
4363 if (phba->sli_rev == 3 &&
4364 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
4365 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
4367 * Finish initializing those IOCB fields that are independent
4368 * of the scsi_cmnd request_buffer
4370 piocbq->iocb.ulpContext = pnode->nlp_rpi;
4372 piocbq->iocb.ulpContext =
4373 phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
4374 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
4375 piocbq->iocb.ulpFCP2Rcvy = 1;
4377 piocbq->iocb.ulpFCP2Rcvy = 0;
4379 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
4380 piocbq->context1 = lpfc_cmd;
4381 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4382 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
4383 piocbq->vport = vport;
4387 * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit
4388 * @vport: The virtual port for which this call is being executed.
4389 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4390 * @lun: Logical unit number.
4391 * @task_mgmt_cmd: SCSI task management command.
4393 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
4394 * for device with SLI-3 interface spec.
4401 lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
4402 struct lpfc_scsi_buf *lpfc_cmd,
4404 uint8_t task_mgmt_cmd)
4406 struct lpfc_iocbq *piocbq;
4408 struct fcp_cmnd *fcp_cmnd;
4409 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
4410 struct lpfc_nodelist *ndlp = rdata->pnode;
4412 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
4413 ndlp->nlp_state != NLP_STE_MAPPED_NODE)
4416 piocbq = &(lpfc_cmd->cur_iocbq);
4417 piocbq->vport = vport;
4419 piocb = &piocbq->iocb;
4421 fcp_cmnd = lpfc_cmd->fcp_cmnd;
4422 /* Clear out any old data in the FCP command area */
4423 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
4424 int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
4425 fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
4426 if (vport->phba->sli_rev == 3 &&
4427 !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
4428 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
4429 piocb->ulpCommand = CMD_FCP_ICMND64_CR;
4430 piocb->ulpContext = ndlp->nlp_rpi;
4431 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4433 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4435 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0;
4436 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
4438 piocb->un.fcpi.fcpi_parm = 0;
4440 /* ulpTimeout is only one byte */
4441 if (lpfc_cmd->timeout > 0xff) {
4443 * Do not timeout the command at the firmware level.
4444 * The driver will provide the timeout mechanism.
4446 piocb->ulpTimeout = 0;
4448 piocb->ulpTimeout = lpfc_cmd->timeout;
4450 if (vport->phba->sli_rev == LPFC_SLI_REV4)
4451 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
4457 * lpfc_scsi_api_table_setup - Set up scsi api function jump table
4458 * @phba: The hba struct for which this call is being executed.
4459 * @dev_grp: The HBA PCI-Device group number.
4461 * This routine sets up the SCSI interface API function jump table in @phba
4463 * Returns: 0 - success, -ENODEV - failure.
4466 lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4469 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
4470 phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
4473 case LPFC_PCI_DEV_LP:
4474 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
4475 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
4476 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
4477 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
4478 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
4480 case LPFC_PCI_DEV_OC:
4481 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
4482 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
4483 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
4484 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
4485 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
4488 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4489 "1418 Invalid HBA PCI-device group: 0x%x\n",
4494 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
4495 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4500 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
4501 * @phba: The Hba for which this call is being executed.
4502 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
4503 * @rspiocbq: Pointer to lpfc_iocbq data structure.
4505 * This routine is IOCB completion routine for device reset and target reset
4506 * routine. This routine release scsi buffer associated with lpfc_cmd.
4509 lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
4510 struct lpfc_iocbq *cmdiocbq,
4511 struct lpfc_iocbq *rspiocbq)
4513 struct lpfc_scsi_buf *lpfc_cmd =
4514 (struct lpfc_scsi_buf *) cmdiocbq->context1;
4516 lpfc_release_scsi_buf(phba, lpfc_cmd);
4521 * lpfc_info - Info entry point of scsi_host_template data structure
4522 * @host: The scsi host for which this call is being executed.
4524 * This routine provides module information about hba.
4527 * Pointer to char - Success.
4530 lpfc_info(struct Scsi_Host *host)
4532 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
4533 struct lpfc_hba *phba = vport->phba;
4534 int len, link_speed = 0;
4535 static char lpfcinfobuf[384];
4537 memset(lpfcinfobuf,0,384);
4538 if (phba && phba->pcidev){
4539 strncpy(lpfcinfobuf, phba->ModelDesc, 256);
4540 len = strlen(lpfcinfobuf);
4541 snprintf(lpfcinfobuf + len,
4543 " on PCI bus %02x device %02x irq %d",
4544 phba->pcidev->bus->number,
4545 phba->pcidev->devfn,
4547 len = strlen(lpfcinfobuf);
4548 if (phba->Port[0]) {
4549 snprintf(lpfcinfobuf + len,
4554 len = strlen(lpfcinfobuf);
4555 if (phba->sli_rev <= LPFC_SLI_REV3) {
4556 link_speed = lpfc_sli_port_speed_get(phba);
4558 if (phba->sli4_hba.link_state.logical_speed)
4560 phba->sli4_hba.link_state.logical_speed;
4562 link_speed = phba->sli4_hba.link_state.speed;
4564 if (link_speed != 0)
4565 snprintf(lpfcinfobuf + len, 384-len,
4566 " Logical Link Speed: %d Mbps", link_speed);
4572 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
4573 * @phba: The Hba for which this call is being executed.
4575 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
4576 * The default value of cfg_poll_tmo is 10 milliseconds.
4578 static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
4580 unsigned long poll_tmo_expires =
4581 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
4583 if (!list_empty(&phba->sli.ring[LPFC_FCP_RING].txcmplq))
4584 mod_timer(&phba->fcp_poll_timer,
4589 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
4590 * @phba: The Hba for which this call is being executed.
4592 * This routine starts the fcp_poll_timer of @phba.
4594 void lpfc_poll_start_timer(struct lpfc_hba * phba)
4596 lpfc_poll_rearm_timer(phba);
4600 * lpfc_poll_timeout - Restart polling timer
4601 * @ptr: Map to lpfc_hba data structure pointer.
4603 * This routine restarts fcp_poll timer, when FCP ring polling is enable
4604 * and FCP Ring interrupt is disable.
4607 void lpfc_poll_timeout(unsigned long ptr)
4609 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
4611 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4612 lpfc_sli_handle_fast_ring_event(phba,
4613 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4615 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4616 lpfc_poll_rearm_timer(phba);
4621 * lpfc_queuecommand - scsi_host_template queuecommand entry point
4622 * @cmnd: Pointer to scsi_cmnd data structure.
4623 * @done: Pointer to done routine.
4625 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
4626 * This routine prepares an IOCB from scsi command and provides to firmware.
4627 * The @done callback is invoked after driver finished processing the command.
4631 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
4634 lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
4636 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4637 struct lpfc_hba *phba = vport->phba;
4638 struct lpfc_rport_data *rdata;
4639 struct lpfc_nodelist *ndlp;
4640 struct lpfc_scsi_buf *lpfc_cmd;
4641 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
4644 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
4645 err = fc_remote_port_chkready(rport);
4648 goto out_fail_command;
4650 ndlp = rdata->pnode;
4652 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
4653 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
4655 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
4656 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
4657 " op:%02x str=%s without registering for"
4658 " BlockGuard - Rejecting command\n",
4659 cmnd->cmnd[0], scsi_get_prot_op(cmnd),
4660 dif_op_str[scsi_get_prot_op(cmnd)]);
4661 goto out_fail_command;
4665 * Catch race where our node has transitioned, but the
4666 * transport is still transitioning.
4668 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
4670 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
4673 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
4674 if (lpfc_cmd == NULL) {
4675 lpfc_rampdown_queue_depth(phba);
4677 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4678 "0707 driver's buffer pool is empty, "
4684 * Store the midlayer's command structure for the completion phase
4685 * and complete the command initialization.
4687 lpfc_cmd->pCmd = cmnd;
4688 lpfc_cmd->rdata = rdata;
4689 lpfc_cmd->timeout = 0;
4690 lpfc_cmd->start_time = jiffies;
4691 cmnd->host_scribble = (unsigned char *)lpfc_cmd;
4693 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
4694 if (vport->phba->cfg_enable_bg) {
4695 lpfc_printf_vlog(vport,
4696 KERN_INFO, LOG_SCSI_CMD,
4697 "9033 BLKGRD: rcvd %s cmd:x%x "
4698 "sector x%llx cnt %u pt %x\n",
4699 dif_op_str[scsi_get_prot_op(cmnd)],
4701 (unsigned long long)scsi_get_lba(cmnd),
4702 blk_rq_sectors(cmnd->request),
4703 (cmnd->cmnd[1]>>5));
4705 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
4707 if (vport->phba->cfg_enable_bg) {
4708 lpfc_printf_vlog(vport,
4709 KERN_INFO, LOG_SCSI_CMD,
4710 "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
4711 "x%x sector x%llx cnt %u pt %x\n",
4713 (unsigned long long)scsi_get_lba(cmnd),
4714 blk_rq_sectors(cmnd->request),
4715 (cmnd->cmnd[1]>>5));
4717 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
4721 goto out_host_busy_free_buf;
4723 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
4725 atomic_inc(&ndlp->cmd_pending);
4726 err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4727 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
4729 atomic_dec(&ndlp->cmd_pending);
4730 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4731 "3376 FCP could not issue IOCB err %x"
4732 "FCP cmd x%x <%d/%llu> "
4733 "sid: x%x did: x%x oxid: x%x "
4734 "Data: x%x x%x x%x x%x\n",
4736 cmnd->device ? cmnd->device->id : 0xffff,
4737 cmnd->device ? cmnd->device->lun : (u64) -1,
4738 vport->fc_myDID, ndlp->nlp_DID,
4739 phba->sli_rev == LPFC_SLI_REV4 ?
4740 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
4741 lpfc_cmd->cur_iocbq.iocb.ulpContext,
4742 lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
4743 lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
4745 (cmnd->request->timeout / 1000));
4748 goto out_host_busy_free_buf;
4750 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
4751 lpfc_sli_handle_fast_ring_event(phba,
4752 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4754 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4755 lpfc_poll_rearm_timer(phba);
4760 out_host_busy_free_buf:
4761 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
4762 lpfc_release_scsi_buf(phba, lpfc_cmd);
4764 return SCSI_MLQUEUE_HOST_BUSY;
4767 return SCSI_MLQUEUE_TARGET_BUSY;
4770 cmnd->scsi_done(cmnd);
4776 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
4777 * @cmnd: Pointer to scsi_cmnd data structure.
4779 * This routine aborts @cmnd pending in base driver.
4786 lpfc_abort_handler(struct scsi_cmnd *cmnd)
4788 struct Scsi_Host *shost = cmnd->device->host;
4789 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4790 struct lpfc_hba *phba = vport->phba;
4791 struct lpfc_iocbq *iocb;
4792 struct lpfc_iocbq *abtsiocb;
4793 struct lpfc_scsi_buf *lpfc_cmd;
4795 int ret = SUCCESS, status = 0;
4796 struct lpfc_sli_ring *pring_s4;
4797 int ring_number, ret_val;
4798 unsigned long flags, iflags;
4799 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
4801 status = fc_block_scsi_eh(cmnd);
4802 if (status != 0 && status != SUCCESS)
4805 spin_lock_irqsave(&phba->hbalock, flags);
4806 /* driver queued commands are in process of being flushed */
4807 if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) {
4808 spin_unlock_irqrestore(&phba->hbalock, flags);
4809 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4810 "3168 SCSI Layer abort requested I/O has been "
4811 "flushed by LLD.\n");
4815 lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
4816 if (!lpfc_cmd || !lpfc_cmd->pCmd) {
4817 spin_unlock_irqrestore(&phba->hbalock, flags);
4818 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4819 "2873 SCSI Layer I/O Abort Request IO CMPL Status "
4820 "x%x ID %d LUN %llu\n",
4821 SUCCESS, cmnd->device->id, cmnd->device->lun);
4825 iocb = &lpfc_cmd->cur_iocbq;
4826 /* the command is in process of being cancelled */
4827 if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
4828 spin_unlock_irqrestore(&phba->hbalock, flags);
4829 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4830 "3169 SCSI Layer abort requested I/O has been "
4831 "cancelled by LLD.\n");
4835 * If pCmd field of the corresponding lpfc_scsi_buf structure
4836 * points to a different SCSI command, then the driver has
4837 * already completed this command, but the midlayer did not
4838 * see the completion before the eh fired. Just return SUCCESS.
4840 if (lpfc_cmd->pCmd != cmnd) {
4841 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4842 "3170 SCSI Layer abort requested I/O has been "
4843 "completed by LLD.\n");
4847 BUG_ON(iocb->context1 != lpfc_cmd);
4849 /* abort issued in recovery is still in progress */
4850 if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) {
4851 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4852 "3389 SCSI Layer I/O Abort Request is pending\n");
4853 spin_unlock_irqrestore(&phba->hbalock, flags);
4857 abtsiocb = __lpfc_sli_get_iocbq(phba);
4858 if (abtsiocb == NULL) {
4863 /* Indicate the IO is being aborted by the driver. */
4864 iocb->iocb_flag |= LPFC_DRIVER_ABORTED;
4867 * The scsi command can not be in txq and it is in flight because the
4868 * pCmd is still pointig at the SCSI command we have to abort. There
4869 * is no need to search the txcmplq. Just send an abort to the FW.
4873 icmd = &abtsiocb->iocb;
4874 icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
4875 icmd->un.acxri.abortContextTag = cmd->ulpContext;
4876 if (phba->sli_rev == LPFC_SLI_REV4)
4877 icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
4879 icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
4882 icmd->ulpClass = cmd->ulpClass;
4884 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
4885 abtsiocb->fcp_wqidx = iocb->fcp_wqidx;
4886 abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
4887 if (iocb->iocb_flag & LPFC_IO_FOF)
4888 abtsiocb->iocb_flag |= LPFC_IO_FOF;
4890 if (lpfc_is_link_up(phba))
4891 icmd->ulpCommand = CMD_ABORT_XRI_CN;
4893 icmd->ulpCommand = CMD_CLOSE_XRI_CN;
4895 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
4896 abtsiocb->vport = vport;
4897 if (phba->sli_rev == LPFC_SLI_REV4) {
4898 ring_number = MAX_SLI3_CONFIGURED_RINGS + iocb->fcp_wqidx;
4899 pring_s4 = &phba->sli.ring[ring_number];
4900 /* Note: both hbalock and ring_lock must be set here */
4901 spin_lock_irqsave(&pring_s4->ring_lock, iflags);
4902 ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
4904 spin_unlock_irqrestore(&pring_s4->ring_lock, iflags);
4906 ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4909 /* no longer need the lock after this point */
4910 spin_unlock_irqrestore(&phba->hbalock, flags);
4913 if (ret_val == IOCB_ERROR) {
4914 lpfc_sli_release_iocbq(phba, abtsiocb);
4919 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4920 lpfc_sli_handle_fast_ring_event(phba,
4921 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4924 lpfc_cmd->waitq = &waitq;
4925 /* Wait for abort to complete */
4926 wait_event_timeout(waitq,
4927 (lpfc_cmd->pCmd != cmnd),
4928 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
4930 spin_lock_irqsave(shost->host_lock, flags);
4931 lpfc_cmd->waitq = NULL;
4932 spin_unlock_irqrestore(shost->host_lock, flags);
4934 if (lpfc_cmd->pCmd == cmnd) {
4936 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
4937 "0748 abort handler timed out waiting "
4938 "for abortng I/O (xri:x%x) to complete: "
4939 "ret %#x, ID %d, LUN %llu\n",
4940 iocb->sli4_xritag, ret,
4941 cmnd->device->id, cmnd->device->lun);
4946 spin_unlock_irqrestore(&phba->hbalock, flags);
4948 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4949 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
4950 "LUN %llu\n", ret, cmnd->device->id,
4956 lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
4958 switch (task_mgmt_cmd) {
4959 case FCP_ABORT_TASK_SET:
4960 return "ABORT_TASK_SET";
4961 case FCP_CLEAR_TASK_SET:
4962 return "FCP_CLEAR_TASK_SET";
4964 return "FCP_BUS_RESET";
4966 return "FCP_LUN_RESET";
4967 case FCP_TARGET_RESET:
4968 return "FCP_TARGET_RESET";
4970 return "FCP_CLEAR_ACA";
4971 case FCP_TERMINATE_TASK:
4972 return "FCP_TERMINATE_TASK";
4980 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed
4981 * @vport: The virtual port for which this call is being executed.
4982 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4984 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded
4991 lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd)
4993 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
4996 uint8_t rsp_info_code;
5001 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5002 "0703 fcp_rsp is missing\n");
5004 rsp_info = fcprsp->rspStatus2;
5005 rsp_len = be32_to_cpu(fcprsp->rspRspLen);
5006 rsp_info_code = fcprsp->rspInfo3;
5009 lpfc_printf_vlog(vport, KERN_INFO,
5011 "0706 fcp_rsp valid 0x%x,"
5012 " rsp len=%d code 0x%x\n",
5014 rsp_len, rsp_info_code);
5016 if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) {
5017 switch (rsp_info_code) {
5018 case RSP_NO_FAILURE:
5019 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5020 "0715 Task Mgmt No Failure\n");
5023 case RSP_TM_NOT_SUPPORTED: /* TM rejected */
5024 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5025 "0716 Task Mgmt Target "
5028 case RSP_TM_NOT_COMPLETED: /* TM failed */
5029 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5030 "0717 Task Mgmt Target "
5033 case RSP_TM_INVALID_LU: /* TM to invalid LU! */
5034 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5035 "0718 Task Mgmt to invalid "
5046 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
5047 * @vport: The virtual port for which this call is being executed.
5048 * @rdata: Pointer to remote port local data
5049 * @tgt_id: Target ID of remote device.
5050 * @lun_id: Lun number for the TMF
5051 * @task_mgmt_cmd: type of TMF to send
5053 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
5061 lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
5062 unsigned tgt_id, uint64_t lun_id,
5063 uint8_t task_mgmt_cmd)
5065 struct lpfc_hba *phba = vport->phba;
5066 struct lpfc_scsi_buf *lpfc_cmd;
5067 struct lpfc_iocbq *iocbq;
5068 struct lpfc_iocbq *iocbqrsp;
5069 struct lpfc_nodelist *pnode = rdata->pnode;
5073 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
5076 lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode);
5077 if (lpfc_cmd == NULL)
5079 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo;
5080 lpfc_cmd->rdata = rdata;
5082 status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
5085 lpfc_release_scsi_buf(phba, lpfc_cmd);
5089 iocbq = &lpfc_cmd->cur_iocbq;
5090 iocbqrsp = lpfc_sli_get_iocbq(phba);
5091 if (iocbqrsp == NULL) {
5092 lpfc_release_scsi_buf(phba, lpfc_cmd);
5095 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
5097 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5098 "0702 Issue %s to TGT %d LUN %llu "
5099 "rpi x%x nlp_flag x%x Data: x%x x%x\n",
5100 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
5101 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
5104 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
5105 iocbq, iocbqrsp, lpfc_cmd->timeout);
5106 if ((status != IOCB_SUCCESS) ||
5107 (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) {
5108 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5109 "0727 TMF %s to TGT %d LUN %llu failed (%d, %d) "
5111 lpfc_taskmgmt_name(task_mgmt_cmd),
5112 tgt_id, lun_id, iocbqrsp->iocb.ulpStatus,
5113 iocbqrsp->iocb.un.ulpWord[4],
5115 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */
5116 if (status == IOCB_SUCCESS) {
5117 if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
5118 /* Something in the FCP_RSP was invalid.
5119 * Check conditions */
5120 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd);
5123 } else if (status == IOCB_TIMEDOUT) {
5124 ret = TIMEOUT_ERROR;
5128 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
5132 lpfc_sli_release_iocbq(phba, iocbqrsp);
5134 if (ret != TIMEOUT_ERROR)
5135 lpfc_release_scsi_buf(phba, lpfc_cmd);
5141 * lpfc_chk_tgt_mapped -
5142 * @vport: The virtual port to check on
5143 * @cmnd: Pointer to scsi_cmnd data structure.
5145 * This routine delays until the scsi target (aka rport) for the
5146 * command exists (is present and logged in) or we declare it non-existent.
5153 lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
5155 struct lpfc_rport_data *rdata;
5156 struct lpfc_nodelist *pnode;
5157 unsigned long later;
5159 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5161 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5162 "0797 Tgt Map rport failure: rdata x%p\n", rdata);
5165 pnode = rdata->pnode;
5167 * If target is not in a MAPPED state, delay until
5168 * target is rediscovered or devloss timeout expires.
5170 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5171 while (time_after(later, jiffies)) {
5172 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
5174 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
5176 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
5177 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5180 pnode = rdata->pnode;
5182 if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
5183 (pnode->nlp_state != NLP_STE_MAPPED_NODE))
5189 * lpfc_reset_flush_io_context -
5190 * @vport: The virtual port (scsi_host) for the flush context
5191 * @tgt_id: If aborting by Target contect - specifies the target id
5192 * @lun_id: If aborting by Lun context - specifies the lun id
5193 * @context: specifies the context level to flush at.
5195 * After a reset condition via TMF, we need to flush orphaned i/o
5196 * contexts from the adapter. This routine aborts any contexts
5197 * outstanding, then waits for their completions. The wait is
5198 * bounded by devloss_tmo though.
5205 lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
5206 uint64_t lun_id, lpfc_ctx_cmd context)
5208 struct lpfc_hba *phba = vport->phba;
5209 unsigned long later;
5212 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
5214 lpfc_sli_abort_taskmgmt(vport,
5215 &phba->sli.ring[phba->sli.fcp_ring],
5216 tgt_id, lun_id, context);
5217 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5218 while (time_after(later, jiffies) && cnt) {
5219 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
5220 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
5223 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5224 "0724 I/O flush failure for context %s : cnt x%x\n",
5225 ((context == LPFC_CTX_LUN) ? "LUN" :
5226 ((context == LPFC_CTX_TGT) ? "TGT" :
5227 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
5235 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
5236 * @cmnd: Pointer to scsi_cmnd data structure.
5238 * This routine does a device reset by sending a LUN_RESET task management
5246 lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
5248 struct Scsi_Host *shost = cmnd->device->host;
5249 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5250 struct lpfc_rport_data *rdata;
5251 struct lpfc_nodelist *pnode;
5252 unsigned tgt_id = cmnd->device->id;
5253 uint64_t lun_id = cmnd->device->lun;
5254 struct lpfc_scsi_event_header scsi_event;
5257 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5259 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5260 "0798 Device Reset rport failure: rdata x%p\n", rdata);
5263 pnode = rdata->pnode;
5264 status = fc_block_scsi_eh(cmnd);
5265 if (status != 0 && status != SUCCESS)
5268 status = lpfc_chk_tgt_mapped(vport, cmnd);
5269 if (status == FAILED) {
5270 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5271 "0721 Device Reset rport failure: rdata x%p\n", rdata);
5275 scsi_event.event_type = FC_REG_SCSI_EVENT;
5276 scsi_event.subcategory = LPFC_EVENT_LUNRESET;
5277 scsi_event.lun = lun_id;
5278 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5279 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5281 fc_host_post_vendor_event(shost, fc_get_event_number(),
5282 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5284 status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
5287 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5288 "0713 SCSI layer issued Device Reset (%d, %llu) "
5289 "return x%x\n", tgt_id, lun_id, status);
5292 * We have to clean up i/o as : they may be orphaned by the TMF;
5293 * or if the TMF failed, they may be in an indeterminate state.
5295 * We will report success if all the i/o aborts successfully.
5297 if (status == SUCCESS)
5298 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5305 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
5306 * @cmnd: Pointer to scsi_cmnd data structure.
5308 * This routine does a target reset by sending a TARGET_RESET task management
5316 lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
5318 struct Scsi_Host *shost = cmnd->device->host;
5319 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5320 struct lpfc_rport_data *rdata;
5321 struct lpfc_nodelist *pnode;
5322 unsigned tgt_id = cmnd->device->id;
5323 uint64_t lun_id = cmnd->device->lun;
5324 struct lpfc_scsi_event_header scsi_event;
5327 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
5329 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5330 "0799 Target Reset rport failure: rdata x%p\n", rdata);
5333 pnode = rdata->pnode;
5334 status = fc_block_scsi_eh(cmnd);
5335 if (status != 0 && status != SUCCESS)
5338 status = lpfc_chk_tgt_mapped(vport, cmnd);
5339 if (status == FAILED) {
5340 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5341 "0722 Target Reset rport failure: rdata x%p\n", rdata);
5342 spin_lock_irq(shost->host_lock);
5343 pnode->nlp_flag &= ~NLP_NPR_ADISC;
5344 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
5345 spin_unlock_irq(shost->host_lock);
5346 lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5348 return FAST_IO_FAIL;
5351 scsi_event.event_type = FC_REG_SCSI_EVENT;
5352 scsi_event.subcategory = LPFC_EVENT_TGTRESET;
5354 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5355 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5357 fc_host_post_vendor_event(shost, fc_get_event_number(),
5358 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5360 status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
5363 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5364 "0723 SCSI layer issued Target Reset (%d, %llu) "
5365 "return x%x\n", tgt_id, lun_id, status);
5368 * We have to clean up i/o as : they may be orphaned by the TMF;
5369 * or if the TMF failed, they may be in an indeterminate state.
5371 * We will report success if all the i/o aborts successfully.
5373 if (status == SUCCESS)
5374 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5380 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
5381 * @cmnd: Pointer to scsi_cmnd data structure.
5383 * This routine does target reset to all targets on @cmnd->device->host.
5384 * This emulates Parallel SCSI Bus Reset Semantics.
5391 lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
5393 struct Scsi_Host *shost = cmnd->device->host;
5394 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5395 struct lpfc_nodelist *ndlp = NULL;
5396 struct lpfc_scsi_event_header scsi_event;
5398 int ret = SUCCESS, status, i;
5400 scsi_event.event_type = FC_REG_SCSI_EVENT;
5401 scsi_event.subcategory = LPFC_EVENT_BUSRESET;
5403 memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
5404 memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
5406 fc_host_post_vendor_event(shost, fc_get_event_number(),
5407 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5409 status = fc_block_scsi_eh(cmnd);
5410 if (status != 0 && status != SUCCESS)
5414 * Since the driver manages a single bus device, reset all
5415 * targets known to the driver. Should any target reset
5416 * fail, this routine returns failure to the midlayer.
5418 for (i = 0; i < LPFC_MAX_TARGET; i++) {
5419 /* Search for mapped node by target ID */
5421 spin_lock_irq(shost->host_lock);
5422 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5423 if (!NLP_CHK_NODE_ACT(ndlp))
5425 if (vport->phba->cfg_fcp2_no_tgt_reset &&
5426 (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
5428 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5429 ndlp->nlp_sid == i &&
5435 spin_unlock_irq(shost->host_lock);
5439 status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data,
5440 i, 0, FCP_TARGET_RESET);
5442 if (status != SUCCESS) {
5443 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5444 "0700 Bus Reset on target %d failed\n",
5450 * We have to clean up i/o as : they may be orphaned by the TMFs
5451 * above; or if any of the TMFs failed, they may be in an
5452 * indeterminate state.
5453 * We will report success if all the i/o aborts successfully.
5456 status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
5457 if (status != SUCCESS)
5460 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5461 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
5466 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
5467 * @cmnd: Pointer to scsi_cmnd data structure.
5469 * This routine does host reset to the adaptor port. It brings the HBA
5470 * offline, performs a board restart, and then brings the board back online.
5471 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local
5472 * reject all outstanding SCSI commands to the host and error returned
5473 * back to SCSI mid-level. As this will be SCSI mid-level's last resort
5474 * of error handling, it will only return error if resetting of the adapter
5475 * is not successful; in all other cases, will return success.
5482 lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
5484 struct Scsi_Host *shost = cmnd->device->host;
5485 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5486 struct lpfc_hba *phba = vport->phba;
5487 int rc, ret = SUCCESS;
5489 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5490 "3172 SCSI layer issued Host Reset Data:\n");
5492 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
5494 rc = lpfc_sli_brdrestart(phba);
5497 rc = lpfc_online(phba);
5500 lpfc_unblock_mgmt_io(phba);
5502 if (ret == FAILED) {
5503 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5504 "3323 Failed host reset, bring it offline\n");
5505 lpfc_sli4_offline_eratt(phba);
5511 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
5512 * @sdev: Pointer to scsi_device.
5514 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
5515 * globally available list of scsi buffers. This routine also makes sure scsi
5516 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
5517 * of scsi buffer exists for the lifetime of the driver.
5524 lpfc_slave_alloc(struct scsi_device *sdev)
5526 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5527 struct lpfc_hba *phba = vport->phba;
5528 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
5530 uint32_t num_to_alloc = 0;
5531 int num_allocated = 0;
5533 struct lpfc_device_data *device_data;
5534 unsigned long flags;
5535 struct lpfc_name target_wwpn;
5537 if (!rport || fc_remote_port_chkready(rport))
5540 if (phba->cfg_fof) {
5543 * Check to see if the device data structure for the lun
5544 * exists. If not, create one.
5547 u64_to_wwn(rport->port_name, target_wwpn.u.wwn);
5548 spin_lock_irqsave(&phba->devicelock, flags);
5549 device_data = __lpfc_get_device_data(phba,
5551 &vport->fc_portname,
5555 spin_unlock_irqrestore(&phba->devicelock, flags);
5556 device_data = lpfc_create_device_data(phba,
5557 &vport->fc_portname,
5562 spin_lock_irqsave(&phba->devicelock, flags);
5563 list_add_tail(&device_data->listentry, &phba->luns);
5565 device_data->rport_data = rport->dd_data;
5566 device_data->available = true;
5567 spin_unlock_irqrestore(&phba->devicelock, flags);
5568 sdev->hostdata = device_data;
5570 sdev->hostdata = rport->dd_data;
5572 sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
5575 * Populate the cmds_per_lun count scsi_bufs into this host's globally
5576 * available list of scsi buffers. Don't allocate more than the
5577 * HBA limit conveyed to the midlayer via the host structure. The
5578 * formula accounts for the lun_queue_depth + error handlers + 1
5579 * extra. This list of scsi bufs exists for the lifetime of the driver.
5581 total = phba->total_scsi_bufs;
5582 num_to_alloc = vport->cfg_lun_queue_depth + 2;
5584 /* If allocated buffers are enough do nothing */
5585 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
5588 /* Allow some exchanges to be available always to complete discovery */
5589 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
5590 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5591 "0704 At limitation of %d preallocated "
5592 "command buffers\n", total);
5594 /* Allow some exchanges to be available always to complete discovery */
5595 } else if (total + num_to_alloc >
5596 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
5597 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5598 "0705 Allocation request of %d "
5599 "command buffers will exceed max of %d. "
5600 "Reducing allocation request to %d.\n",
5601 num_to_alloc, phba->cfg_hba_queue_depth,
5602 (phba->cfg_hba_queue_depth - total));
5603 num_to_alloc = phba->cfg_hba_queue_depth - total;
5605 num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc);
5606 if (num_to_alloc != num_allocated) {
5607 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5608 "0708 Allocation request of %d "
5609 "command buffers did not succeed. "
5610 "Allocated %d buffers.\n",
5611 num_to_alloc, num_allocated);
5613 if (num_allocated > 0)
5614 phba->total_scsi_bufs += num_allocated;
5619 * lpfc_slave_configure - scsi_host_template slave_configure entry point
5620 * @sdev: Pointer to scsi_device.
5622 * This routine configures following items
5623 * - Tag command queuing support for @sdev if supported.
5624 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
5630 lpfc_slave_configure(struct scsi_device *sdev)
5632 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5633 struct lpfc_hba *phba = vport->phba;
5635 if (sdev->tagged_supported)
5636 scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth);
5638 scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth);
5640 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
5641 lpfc_sli_handle_fast_ring_event(phba,
5642 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
5643 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
5644 lpfc_poll_rearm_timer(phba);
5651 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
5652 * @sdev: Pointer to scsi_device.
5654 * This routine sets @sdev hostatdata filed to null.
5657 lpfc_slave_destroy(struct scsi_device *sdev)
5659 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5660 struct lpfc_hba *phba = vport->phba;
5661 unsigned long flags;
5662 struct lpfc_device_data *device_data = sdev->hostdata;
5664 atomic_dec(&phba->sdev_cnt);
5665 if ((phba->cfg_fof) && (device_data)) {
5666 spin_lock_irqsave(&phba->devicelock, flags);
5667 device_data->available = false;
5668 if (!device_data->oas_enabled)
5669 lpfc_delete_device_data(phba, device_data);
5670 spin_unlock_irqrestore(&phba->devicelock, flags);
5672 sdev->hostdata = NULL;
5677 * lpfc_create_device_data - creates and initializes device data structure for OAS
5678 * @pha: Pointer to host bus adapter structure.
5679 * @vport_wwpn: Pointer to vport's wwpn information
5680 * @target_wwpn: Pointer to target's wwpn information
5681 * @lun: Lun on target
5682 * @atomic_create: Flag to indicate if memory should be allocated using the
5683 * GFP_ATOMIC flag or not.
5685 * This routine creates a device data structure which will contain identifying
5686 * information for the device (host wwpn, target wwpn, lun), state of OAS,
5687 * whether or not the corresponding lun is available by the system,
5688 * and pointer to the rport data.
5692 * Pointer to lpfc_device_data - Success
5694 struct lpfc_device_data*
5695 lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5696 struct lpfc_name *target_wwpn, uint64_t lun,
5700 struct lpfc_device_data *lun_info;
5703 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5707 /* Attempt to create the device data to contain lun info */
5710 memory_flags = GFP_ATOMIC;
5712 memory_flags = GFP_KERNEL;
5713 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags);
5716 INIT_LIST_HEAD(&lun_info->listentry);
5717 lun_info->rport_data = NULL;
5718 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn,
5719 sizeof(struct lpfc_name));
5720 memcpy(&lun_info->device_id.target_wwpn, target_wwpn,
5721 sizeof(struct lpfc_name));
5722 lun_info->device_id.lun = lun;
5723 lun_info->oas_enabled = false;
5724 lun_info->available = false;
5729 * lpfc_delete_device_data - frees a device data structure for OAS
5730 * @pha: Pointer to host bus adapter structure.
5731 * @lun_info: Pointer to device data structure to free.
5733 * This routine frees the previously allocated device data structure passed.
5737 lpfc_delete_device_data(struct lpfc_hba *phba,
5738 struct lpfc_device_data *lun_info)
5741 if (unlikely(!phba) || !lun_info ||
5745 if (!list_empty(&lun_info->listentry))
5746 list_del(&lun_info->listentry);
5747 mempool_free(lun_info, phba->device_data_mem_pool);
5752 * __lpfc_get_device_data - returns the device data for the specified lun
5753 * @pha: Pointer to host bus adapter structure.
5754 * @list: Point to list to search.
5755 * @vport_wwpn: Pointer to vport's wwpn information
5756 * @target_wwpn: Pointer to target's wwpn information
5757 * @lun: Lun on target
5759 * This routine searches the list passed for the specified lun's device data.
5760 * This function does not hold locks, it is the responsibility of the caller
5761 * to ensure the proper lock is held before calling the function.
5765 * Pointer to lpfc_device_data - Success
5767 struct lpfc_device_data*
5768 __lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list,
5769 struct lpfc_name *vport_wwpn,
5770 struct lpfc_name *target_wwpn, uint64_t lun)
5773 struct lpfc_device_data *lun_info;
5775 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn ||
5779 /* Check to see if the lun is already enabled for OAS. */
5781 list_for_each_entry(lun_info, list, listentry) {
5782 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5783 sizeof(struct lpfc_name)) == 0) &&
5784 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5785 sizeof(struct lpfc_name)) == 0) &&
5786 (lun_info->device_id.lun == lun))
5794 * lpfc_find_next_oas_lun - searches for the next oas lun
5795 * @pha: Pointer to host bus adapter structure.
5796 * @vport_wwpn: Pointer to vport's wwpn information
5797 * @target_wwpn: Pointer to target's wwpn information
5798 * @starting_lun: Pointer to the lun to start searching for
5799 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information
5800 * @found_target_wwpn: Pointer to the found lun's target wwpn information
5801 * @found_lun: Pointer to the found lun.
5802 * @found_lun_status: Pointer to status of the found lun.
5804 * This routine searches the luns list for the specified lun
5805 * or the first lun for the vport/target. If the vport wwpn contains
5806 * a zero value then a specific vport is not specified. In this case
5807 * any vport which contains the lun will be considered a match. If the
5808 * target wwpn contains a zero value then a specific target is not specified.
5809 * In this case any target which contains the lun will be considered a
5810 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status
5811 * are returned. The function will also return the next lun if available.
5812 * If the next lun is not found, starting_lun parameter will be set to
5820 lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5821 struct lpfc_name *target_wwpn, uint64_t *starting_lun,
5822 struct lpfc_name *found_vport_wwpn,
5823 struct lpfc_name *found_target_wwpn,
5824 uint64_t *found_lun,
5825 uint32_t *found_lun_status)
5828 unsigned long flags;
5829 struct lpfc_device_data *lun_info;
5830 struct lpfc_device_id *device_id;
5834 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5835 !starting_lun || !found_vport_wwpn ||
5836 !found_target_wwpn || !found_lun || !found_lun_status ||
5837 (*starting_lun == NO_MORE_OAS_LUN) ||
5841 lun = *starting_lun;
5842 *found_lun = NO_MORE_OAS_LUN;
5843 *starting_lun = NO_MORE_OAS_LUN;
5845 /* Search for lun or the lun closet in value */
5847 spin_lock_irqsave(&phba->devicelock, flags);
5848 list_for_each_entry(lun_info, &phba->luns, listentry) {
5849 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) ||
5850 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5851 sizeof(struct lpfc_name)) == 0)) &&
5852 ((wwn_to_u64(target_wwpn->u.wwn) == 0) ||
5853 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5854 sizeof(struct lpfc_name)) == 0)) &&
5855 (lun_info->oas_enabled)) {
5856 device_id = &lun_info->device_id;
5858 ((lun == FIND_FIRST_OAS_LUN) ||
5859 (device_id->lun == lun))) {
5860 *found_lun = device_id->lun;
5861 memcpy(found_vport_wwpn,
5862 &device_id->vport_wwpn,
5863 sizeof(struct lpfc_name));
5864 memcpy(found_target_wwpn,
5865 &device_id->target_wwpn,
5866 sizeof(struct lpfc_name));
5867 if (lun_info->available)
5869 OAS_LUN_STATUS_EXISTS;
5871 *found_lun_status = 0;
5872 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)
5873 memset(vport_wwpn, 0x0,
5874 sizeof(struct lpfc_name));
5875 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)
5876 memset(target_wwpn, 0x0,
5877 sizeof(struct lpfc_name));
5880 *starting_lun = device_id->lun;
5881 memcpy(vport_wwpn, &device_id->vport_wwpn,
5882 sizeof(struct lpfc_name));
5883 memcpy(target_wwpn, &device_id->target_wwpn,
5884 sizeof(struct lpfc_name));
5889 spin_unlock_irqrestore(&phba->devicelock, flags);
5894 * lpfc_enable_oas_lun - enables a lun for OAS operations
5895 * @pha: Pointer to host bus adapter structure.
5896 * @vport_wwpn: Pointer to vport's wwpn information
5897 * @target_wwpn: Pointer to target's wwpn information
5900 * This routine enables a lun for oas operations. The routines does so by
5901 * doing the following :
5903 * 1) Checks to see if the device data for the lun has been created.
5904 * 2) If found, sets the OAS enabled flag if not set and returns.
5905 * 3) Otherwise, creates a device data structure.
5906 * 4) If successfully created, indicates the device data is for an OAS lun,
5907 * indicates the lun is not available and add to the list of luns.
5914 lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5915 struct lpfc_name *target_wwpn, uint64_t lun)
5918 struct lpfc_device_data *lun_info;
5919 unsigned long flags;
5921 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5925 spin_lock_irqsave(&phba->devicelock, flags);
5927 /* Check to see if the device data for the lun has been created */
5928 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn,
5931 if (!lun_info->oas_enabled)
5932 lun_info->oas_enabled = true;
5933 spin_unlock_irqrestore(&phba->devicelock, flags);
5937 /* Create an lun info structure and add to list of luns */
5938 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun,
5941 lun_info->oas_enabled = true;
5942 lun_info->available = false;
5943 list_add_tail(&lun_info->listentry, &phba->luns);
5944 spin_unlock_irqrestore(&phba->devicelock, flags);
5947 spin_unlock_irqrestore(&phba->devicelock, flags);
5952 * lpfc_disable_oas_lun - disables a lun for OAS operations
5953 * @pha: Pointer to host bus adapter structure.
5954 * @vport_wwpn: Pointer to vport's wwpn information
5955 * @target_wwpn: Pointer to target's wwpn information
5958 * This routine disables a lun for oas operations. The routines does so by
5959 * doing the following :
5961 * 1) Checks to see if the device data for the lun is created.
5962 * 2) If present, clears the flag indicating this lun is for OAS.
5963 * 3) If the lun is not available by the system, the device data is
5971 lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5972 struct lpfc_name *target_wwpn, uint64_t lun)
5975 struct lpfc_device_data *lun_info;
5976 unsigned long flags;
5978 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5982 spin_lock_irqsave(&phba->devicelock, flags);
5984 /* Check to see if the lun is available. */
5985 lun_info = __lpfc_get_device_data(phba,
5986 &phba->luns, vport_wwpn,
5989 lun_info->oas_enabled = false;
5990 if (!lun_info->available)
5991 lpfc_delete_device_data(phba, lun_info);
5992 spin_unlock_irqrestore(&phba->devicelock, flags);
5996 spin_unlock_irqrestore(&phba->devicelock, flags);
6000 struct scsi_host_template lpfc_template = {
6001 .module = THIS_MODULE,
6002 .name = LPFC_DRIVER_NAME,
6004 .queuecommand = lpfc_queuecommand,
6005 .eh_abort_handler = lpfc_abort_handler,
6006 .eh_device_reset_handler = lpfc_device_reset_handler,
6007 .eh_target_reset_handler = lpfc_target_reset_handler,
6008 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6009 .eh_host_reset_handler = lpfc_host_reset_handler,
6010 .slave_alloc = lpfc_slave_alloc,
6011 .slave_configure = lpfc_slave_configure,
6012 .slave_destroy = lpfc_slave_destroy,
6013 .scan_finished = lpfc_scan_finished,
6015 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6016 .cmd_per_lun = LPFC_CMD_PER_LUN,
6017 .use_clustering = ENABLE_CLUSTERING,
6018 .shost_attrs = lpfc_hba_attrs,
6019 .max_sectors = 0xFFFF,
6020 .vendor_id = LPFC_NL_VENDOR_ID,
6021 .change_queue_depth = lpfc_change_queue_depth,
6022 .change_queue_type = lpfc_change_queue_type,
6025 struct scsi_host_template lpfc_vport_template = {
6026 .module = THIS_MODULE,
6027 .name = LPFC_DRIVER_NAME,
6029 .queuecommand = lpfc_queuecommand,
6030 .eh_abort_handler = lpfc_abort_handler,
6031 .eh_device_reset_handler = lpfc_device_reset_handler,
6032 .eh_target_reset_handler = lpfc_target_reset_handler,
6033 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6034 .slave_alloc = lpfc_slave_alloc,
6035 .slave_configure = lpfc_slave_configure,
6036 .slave_destroy = lpfc_slave_destroy,
6037 .scan_finished = lpfc_scan_finished,
6039 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
6040 .cmd_per_lun = LPFC_CMD_PER_LUN,
6041 .use_clustering = ENABLE_CLUSTERING,
6042 .shost_attrs = lpfc_vport_attrs,
6043 .max_sectors = 0xFFFF,
6044 .change_queue_depth = lpfc_change_queue_depth,
6045 .change_queue_type = lpfc_change_queue_type,